TY - GEN A1 - Kneip, Sascha T1 - Die sozialphilosophischen Grundlagen des demokratischen Wohlfahrtsstaats N2 - At the beginning of the 21st century the welfare state is under pressure from two sides. On the one hand, there is "globalisation", on the other hand seems to be some sort of normative crisis of the welfare state’s moral foundations. The welfare state is said to curtail individual freedom and autonomy. This article rejects this assumption by exploring the philosophical and moral foundations of the welfare state, thereby demonstrating that it is essentially necessary for individual freedom and autonomy. Furthermore, it is shown that individual freedom is also the core principle of liberal democracy and that the welfare state is therefore an indispensable prerequisite for democracy itself. KW - welfare state KW - democracy Y1 - 2003 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9570 ER - TY - GEN A1 - Risse, Thomas T1 - Die neue Weltordnung : US-amerikanische Hypermacht - europäische Ohnmacht? N2 - Do the transatlantic relations have a future after the Iraq crisis and what will they look like? This question will be discussed in this and the next issue of WeltTrends. For this debate, Thomas Risse, Chair of International Relation at the Freie Universität Berlin, provides the initial input. Risse focuses on controversial issues inside of Europe, the outcome of which will be decisive for the future of the transatlantic relationship. Will the European consensus once constituted by the commitment to international law and multilateralism persist? What is the European position regarding democracy and human rights in the Middle East? Will Europe develop a strategy to cope with the new kind of threats posed by weapons of mass destruction in the hands of dictators or terrorists? Risse´s article has provoked a debate inside the German academic community, whose contributions will be published in the next issue of WeltTrends. KW - Iraq crisis KW - world order KW - transatlantic relations Y1 - 2003 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9580 ER - TY - GEN A1 - Jäger, Thomas T1 - Unipolarität und Gegenmachtbildung : Anmerkungen zur deutschen Außenpolitik N2 - This issue of WeltTrends features the debate about the future of the transatlantic relationship and world order after the Iraq war. It was started by Thomas Risse with his article in the previous edition. Thomas Risse elaborated on three main points of contention between the United States and Europe: the role of international law and multilateralism, democracy and human rights, and the strategy towards new security threats. Most of the scholars, contributing to the debate in this issue agree with Risse in that there is no alternative to the transatlantic partnership and offer possible paths towards its renewal. The debate will be continued with additional comments and a rebuttal by Thomas Risse in the next Winter issue. KW - transatlantic relationship KW - Europe KW - United States KW - international security Y1 - 2003 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9604 ER - TY - GEN A1 - Wallerstein, Immanuel T1 - Wohin steuert die Welt? : Geopolitische Brüche im 21. Jahrhundert N2 - In this article, Immanuel Wallerstein tries to anticipate the evolution of world conflicts and structures over the next decades. In his analysis, he identifies three main cleavages which structure future global conflicts: the triadic cleavage between the United States, Europe and Japan, who compete economically; the North-South cleavage between core zones and the periphery of the world economy; and, finally, the cleavage between what he calls the "Spirit of Davos" and the "Spirit of Porto Alegre" as a conflict between alternative images of the future world order. The structure and the dynamics of each cleavage are analysed and their evolution over the next decades is anticipated. KW - political economy KW - future of capitalism KW - globalization Y1 - 2003 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9612 ER - TY - GEN A1 - Koszel, Bogdan T1 - Polens Engagement in der euroatlantischen Zone nach dem Irak-Krieg N2 - In this issue, we continue and complete the debate on the future of the transatlantic relationship and of world order after the Iraq war. The debate was initiated by an article by Thomas Risse (Freie Universität Berlin) in WeltTrends 39, which has provoked a remarkable reaction within the German academic community, as documented in WeltTrends 40. This issue features additional comments and the rebuttal by Thomas Risse. Most authors believe that the transatlantic partnership is in a serious crisis, but claim that it remains without an alternative for both sides of the Atlantic. KW - US foreign policy KW - European foreign policy KW - Germany KW - Poland KW - transatlantic relations KW - Iraq war Y1 - 2003 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9625 ER - TY - GEN A1 - Risse, Thomas T1 - Die unipolare Weltordnung - Ein soziales Konstrukt : ein Kommentar zu den Kommentaren N2 - In this issue, we continue and complete the debate on the future of the transatlantic relationship and of world order after the Iraq war. The debate was initiated by an article by Thomas Risse (Freie Universität Berlin) in WeltTrends 39, which has provoked a remarkable reaction within the German academic community, as documented in WeltTrends 40. This issue features additional comments and the rebuttal by Thomas Risse. Most authors believe that the transatlantic partnership is in a serious crisis, but claim that it remains without an alternative for both sides of the Atlantic. KW - US foreign policy KW - European foreign policy KW - Germany KW - transatlantic relations KW - Iraq war Y1 - 2003 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9631 ER - TY - GEN A1 - Reich, Oliver A1 - Löhmannsröben, Hans-Gerd A1 - Schael, Frank T1 - Optical sensing with photon density waves: investigation of model media N2 - Investigations with frequency domain photon density waves allow elucidation of absorption and scattering properties of turbid media. The temporal and spatial propagation of intensity modulated light with frequencies up to more than 1 GHz can be described by the P1 approximation to the Boltzmann transport equation. In this study, we establish requirements for the appropriate choice of turbid model media and characterize mixtures of isosulfan blue as absorber and polystyrene beads as scatterer. For these model media, the independent determination of absorption and reduced scattering coefficients over large absorber and scatterer concentration ranges is demonstrated with a frequency domain photon density wave spectrometer employing intensity and phase measurements at various modulation frequencies. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 026 Y1 - 2003 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-13147 ER - TY - GEN A1 - Kaafarani, Bilal R. A1 - Wex, Brigitte A1 - Strehmel, Bernd A1 - Neckers, Douglas C. T1 - Structural concept for fluorinated Y-enynes with solvatochromic properties N2 - An approach to the development of fluorescent probes to follow polymerizations in situ using fluorinated cross-conjugated enediynes (Y-enynes) is reported. Different substitution patterns in the Y-enynes result in distinct solvatochromic behavior. β,β-Bis(phenylethynyl)pentafluorostyrene 7, which bears no donor substituents and only fluorine at the styrene moiety, shows no solvatochromism. Donor substituted β,β-bis(3,4,5-trimethoxyphenylethynyl) pentafluorostyrene 8 and β,β-bis(4-butyl-2,3,5,6-tetrafluorophenylethynyl)-3,4,5-trimethoxystyrene 9 exhibit solvatochromism upon change of solvent polarity. Y-enyne 8 showed the largest solvatochromic shift (94 nm bathochromic shift) upon changing solvent from cyclohexane to acetonitrile. A smaller solvatochromic response (44 nm bathochromic shift) was observed for 9. Lippert–Mataga treatment of 8 and 9 yields slopes of -10,800 and -6,400 cm -1, respectively. This corresponds to a change in dipole moment of 9.6 and 6.9 D, respectively. The solvatochromic behavior in 8 and 9 supports the formation of an intramolecular charge transfer (ICT) state. The low fluorescence quantum yields are caused by competitive double bond rotation. The fluorescence decay time of 9 decreases in methyltetrahydrofuran from 2.1 ns at 77 K to 0.11 ns at 200 K. Efficient single bond rotation in 9 was frozen at -50 °C in a configuration in which the trimethoxyphenyl ring is perpendicular to the fluorinated rings. 7–9 are photostable compounds. The X-ray structure of 7 shows it is not planar and that its conjugation is distorted. Y-enyne 7 stacks in the solid state showing coulombic, actetylene–arene, and fluorine–π interactions. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 027 Y1 - 2002 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-13168 ER - TY - GEN A1 - Kindelberger, Kilian A1 - Schmidt, Heiko T1 - Terror, Glaubenskrieg und Fundamentalismus Y1 - 2002 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9499 ER - TY - GEN A1 - Brabandt, Heike A1 - Locher, Birgit A1 - Prügl, Elisabeth T1 - Normen, Gender und Politikwandel : internationale Beziehungen aus der Geschlechterperspektive ; eine Einführung N2 - This introduction provides an overview of feminist approaches to International Relations. The authors compare the Anglo-American debate with the Germanspeaking discussion in order to reveal similarities and differences. They identify three particular areas of research that characterize the German-speaking feminist debate in International Relations: (1) works evolving out of peace studies; (2) research on globalization and international economic institutions; (3) studies focusing on women’s movements together with most current works centering around international norms. They argue that feminist approaches to norms constitute a particularly promising research area which provides new "tools" to account for international, regional or domestic policy-change. Gender-sensitive research on norms also allows to address ethical questions that are vital for feminist understandings of science. Moreover, this new focus on norms enables bridge-building between feminism and the mainstream. KW - gender KW - norms KW - International Relations KW - NGOs KW - feminism Y1 - 2002 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9517 ER - TY - GEN A1 - Brill, Heinz T1 - Das Zeitalter der Globalisierung Y1 - 2002 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9528 ER - TY - GEN A1 - Mols, Manfred T1 - Was sind und zu welchem Ende betreiben wir Regionalwissenschaften? : Eine politikwissenschaftliche Perspektive N2 - On the occasion of his farewell lecture, Manfred Mols looks back to his academic work of the last four decades, and discusses the essential meaning of area studies. He tries to clarify the important denotation of institutes for regional researchers. Area studies should help us to understand changing processes in international policies and they do. He underlines his critical point of view with the position and treatment of area studies among certain universities in Germany. KW - area studies KW - political science Y1 - 2002 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9539 ER - TY - GEN A1 - Schöneburg, Volkmar T1 - Der verlorene Charme des Rechtsstaates : oder: was brachten die Mauerschützenprozesse? N2 - This article is a reply to a statement by Elke Schwinger in WeltTrends 31. The author tries to strike the balance between "coming to terms with the past" and the role of criminal law in this process in Germany. The principle of prohibition of retroactive laws, fixed in the 1990 German Unification Treaty and in the Constitution, had been broken in the trials against the "Mauerschützen" (border guards) in German criminal courts since 1990. There is an artificially constructed past which does not correspond to the reality of the border regime before 1989. The author underlines that today the criminal law is misused for political aims within the German unification process. KW - Germany KW - german unification process KW - transformation of communist states Y1 - 2002 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9451 ER - TY - GEN A1 - Schwarz, Siegfried T1 - Wohin treibt die Europäische Union? Y1 - 2002 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9462 ER - TY - GEN A1 - Hoch, Martin T1 - Die Rückkehr des Mittelalters in der Sicherheitspolitik N2 - "Small wars" will play an increasing role in the conflict scenarios of the 21st century, at the expense of inter-state wars. One of the key features of future war is the difficult differentiation between civilian and military targets, between combatants and noncombatants. It is argued that the parallel (and competing) structures of both states and non-state actors using force openly and equally will be a permanent feature of international security policy in the 21st century. This development is tantamount to the dissolution of the monopoly on the legitimate use of force by the states. The state-centered system of international relations has been a distinctive hallmark of the modern period. It is bound to give way, however, to the parallel and competing structures of state actors and non-state actors which was a central attribute of the Middle Ages. Jahresabo: 40,00 € (ermäßigt: 25,00 €) KW - international relations KW - war Y1 - 2002 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9854 ER - TY - GEN A1 - Wacker, Alexander A1 - von Elert, Eric T1 - Strong influences of larval diet history on subsequent post-settlement growth in the freshwater mollusc Dreissena polymorpha N2 - Significant seasonal variation in size at settlement has been observed in newly settled larvae of Dreissena polymorpha in Lake Constance. Diet quality, which varies temporally and spatially in freshwater habitats, has been suggested as a significant factor influencing life history and development of freshwater invertebrates. Accordingly, experiments were conducted with field-collected larvae to test the hypothesis that diet quality can determine planktonic larval growth rates, size at settlement and subsequent post-metamorphic growth rates. Larvae were fed one of two diets or starved. One diet was composed of cyanobacterial cells which are deficient in polyunsaturated fatty acids (PUFAs), and the other was a mixed diet rich in PUFAs. Freshly metamorphosed animals from the starvation treatment had a carbon content per individual 70% lower than that of larvae fed the mixed diet. This apparent exhaustion of larval internal reserves resulted in a 50% reduction of the postmetamorphic growth rates. Growth was also reduced in animals previously fed the cyanobacterial diet. Hence, low food quantity or low food quality during the larval stage of D. polymorpha lead to irreversible effects for postmetamorphic animals, and is related to inferior competitive abilities. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 064 KW - Dreissena polymorpha KW - food quality KW - fatty acid KW - life history KW - metamorphosis KW - PUFA Y1 - 2002 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17627 ER - TY - GEN A1 - Schubert, Peter T1 - Der albanische Faktor nach dem Kosovo-Krieg N2 - Two years after the end of the "hot war" in Kosovo, the situation on the Balkans remains extremely tense. The West embraced the illusion to provide the Kosovo-Albanians with conditions for a substantial autonomy under the umbrella of an international protectorate. The Kosovo-Albanians considered the substantial autonomy as a milestone on their way to independence, while a new Yugoslav-Serbian administration counted on regaining sovereign rights in Kosovo. The escalation of the crisis provided a fresh impetus for new expectations regarding the national question. The claim to separate Kosovo from Yugoslavia had been strengthened. The Albanian role in this process remained ambiguous. Albania has to be considered as an actor and an object, and it perceives its national geopolitical and security interests as affected by the process in Kosovo. Tirana's political orientation is strongly moving towards the Euro-Atlantic community, yet hegemonic interests vis-à-vis Kosovo might play an important role besides Tirana's own limited political influence over the developments in Kosovo. Y1 - 2001 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9404 ER - TY - GEN A1 - Tetzlaff, Rainer T1 - Rettung für Afrika? : Deutsche Entwicklungspolitik zwischen Vision und Realität N2 - With the new government, coming to power in 1998, a new emphasis on development cooperation as part of a global strategy for structural change was launched. Since then the federal minister for development cooperation – Heidemarie Wieczorek- Zeul – presented some interesting strategic papers under the label "aid as a global policy to overcome structural blockades to social progress and development". Special emphasis was put on the Program of Action for Poverty Reduction and on the strategy paper of a new Africa policy, but neither are concrete results yet in sight nor is an answer to the burning question of what to do with half of all African countries not having a long-term perspective for development at all (the "failing states" etc.). The article shows the great discrepancy between the impressive political rhetoric and the meager budget to cope with the many challenges of the poor developing countries in Africa. The new concept of the enlarged security intends to stabilize the structural conditions for social and economic development. In order to realize this aim, the article proposes a link between public expenditures on military measures for security and such on civil measures for structural security. Finally the article asks how development cooperation can influence the political attitudes of state and society in Africa in the direction of good governance and structural reforms. Y1 - 2001 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9412 ER - TY - GEN A1 - Gysi, Gregor T1 - Die Terroranschläge und die Folgen für die internationale und die deutsche Politik N2 - The aftermath of September 11th is again subject of discussion in the forum of this Winter edition of WeltTrends. Besides scholars from Poland and Germany, wellknown politicians from all parties represented in the Bundestag deal with questions that arise from the brutal attacks of Islamic terrorism in the Western world. There is a wide consensus that conflicts in regions of crises such as the Middle East have to be solved first before peace can be established. More or less constructive suggestions were made concerning the role of Euro-Atlantic institutions. International efforts under the jurisdiction of the UN will have to be strengthened in order to install democratic structures in Afghanistan and elsewhere. Most of the opinions, ideas and impressions represented here have in common that they give an outlook of what will keep the daily political life busy for the next few years. Y1 - 2001 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9447 ER - TY - GEN A1 - Bahr, Egon T1 - Ostpolitik aus der Mitte Europas - damals und heute N2 - On the occasion of the 30th anniversary of the Warsaw treaty’s signing, Egon Bahr, the intellectual father of the German Ostpolitik, describes his courageous efforts at that time. The aim of this politics was to gain space for strengthening own peace and security in Europe. Irrefutable principles of the policy of that time were non-aggression and the recognition of the borders. Going back to these principles, Egon Bahr redefines Germany’s future foreign policy too. Jahresabo: 40,00 € (ermäßigt: 25,00 €) Y1 - 2001 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9353 ER - TY - GEN A1 - Steinbach, Udo T1 - Der islamische Fundamentalismus heute : Strategiewechsel oder kopernikanische Wende? N2 - "Copernican" is the term the author is calling the turn in present Islamism. After a mostly failed fundamentalist reaction to a high-speed westernisation, there are current debates among Islamists to find an own identity - based on Islam and connected with Western values. Aim of these efforts is to link Islam with the contemporary realities in the Arabian world. Y1 - 2001 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9365 ER - TY - GEN A1 - Höland, Armin T1 - EU-Recht auf dem Weg nach Osten : rechtssoziologische Fragen N2 - Since 1990, ten Central and Eastern European (CEE) candidate countries have become contractually linked to the EU by Europe Agreements in the context of a prudently managed political process of pre-accession preparation and accession negotiations. This article discusses the implementation of EU law in these countries, observing changing attitudes to law, legal behaviour and judicial law control. The author argues that the approximation of legislation in the CEE countries will be achieved much faster than the incorporation of these laws into social practice. Thus, a gap between the formal fulfilment of accession requirements and the application of new EC laws will emerge. The consequences for the enlarged European Community could either be a considerably delayed "pulling up" or a dangerous "pulling down" scenario. Y1 - 2001 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9377 ER - TY - GEN A1 - LeGloannec, Anne-Marie T1 - Amerika mitten ins Herz : kündigt sich das Ende des Unilateralismus und der ungezügelten Globalisierung an? N2 - The "Forum" of WeltTrends No. 32 assembles sixteen analyses of the aftermath of the September 2001 terrorist attacks on the United States, written by distinguished scholars from Germany, Britain, France, the U.S., the Czech Republic, Russia and China. The contributions deal with topics such as international and domestic security, the social and political causes of terrorism, international law, asylum policy, the classification of the attacks as crimes or acts of war, implications for international bodies such as NATO and the UN, and the effect of the attacks on the relationship between the U.S., Europe, Russia, and Asia, in particular Japan and China. The authors counsel strongly against scare mongering and short-term symbolic politics. Any attempt to deal with the complex problem of terrorism has to include long-term political and social policies aimed at the reduction of conflict and sources of political extremism in the Middle Eastern region. There is no reason for panic according to the authors but international politics after September 11th cannot go on like before. Y1 - 2001 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9399 ER - TY - GEN A1 - Crome, Erhard T1 - Die Deutschen und ihre Außenpolitik Y1 - 2001 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-9389 ER - TY - GEN A1 - Wacker, Alexander A1 - von Elert, Eric T1 - Polyunsaturated fatty acids : evidence for non-substitutable biochemical resources in Daphnia galeata N2 - The factors that determine the efficiency of energy transfer in aquatic food webs have been investigated for many decades. The plant-animal interface is the most variable and least predictable of all levels in the food web. In order to study determinants of food quality in a large lake and to test the recently proposed central importance of the long-chained eicosapentaenoic acid (EPA) at the pelagic producer-grazer interface, we tested the importance of polyunsaturated fatty acids (PUFAs) at the pelagic producerconsumer interface by correlating sestonic food parameters with somatic growth rates of a clone of Daphnia galeata. Daphnia growth rates were obtained from standardized laboratory experiments spanning one season with Daphnia feeding on natural seston from Lake Constance, a large pre-alpine lake. Somatic growth rates were fitted to sestonic parameters by using a saturation function. A moderate amount of variation was explained when the model included the elemental parameters carbon (r2 = 0.6) and nitrogen (r2 = 0.71). A tighter fit was obtained when sestonic phosphorus was incorporated (r2 = 0.86). The nonlinear regression with EPA was relatively weak (r2 = 0.77), whereas the highest degree of variance was explained by three C18-PUFAs. The best (r2 = 0.95), and only significant, correlation of Daphnia's growth was found with the C18-PUFA α-linolenic acid (α-LA; C18:3n-3). This correlation was weakest in late August when C:P values increased to 300, suggesting that mineral and PUFA-limitation of Daphnia's growth changed seasonally. Sestonic phosphorus and some PUFAs showed not only tight correlations with growth, but also with sestonic α-LA content. We computed Monte Carlo simulations to test whether the observed effects of α-LA on growth could be accounted for by EPA, phosphorus, or one of the two C18-PUFAs, stearidonic acid (C18:4n-3) and linoleic acid (C18:2n-6). With >99 % probability, the correlation of growth with α-LA could not be explained by any of these parameters. In order to test for EPA limitation of Daphnia's growth, in parallel with experiments on pure seston, growth was determined on seston supplemented with chemostat-grown, P-limited Stephanodiscus hantzschii, which is rich in EPA. Although supplementation increased the EPA content 80-800x, no significant changes in the nonlinear regression of the growth rates with α-LA were found, indicating that growth of Daphnia on pure seston was not EPA limited. This indicates that the two fatty acids, EPA and α-LA, were not mutually substitutable biochemical resources and points to different physiological functions of these two PUFAs. These results support the PUFA-limitation hypothesis for sestonic C:P < 300 but are contrary to the hypothesis of a general importance of EPA, since no evidence for EPA limitation was found. It is suggested that the resource ratios of EPA and α-LA rather than the absolute concentrations determine which of the two resources is limiting growth. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 063 KW - alga KW - consumer KW - Daphnia KW - fatty acid KW - food quality KW - grazer KW - herbivore KW - Lake Constance KW - European Alps KW - PUFA KW - seston Y1 - 2001 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17587 ER - TY - GEN A1 - Pommerin, Reiner T1 - Reif machen für die Welt! : Gedanken zur Ausbildung einer Elite für internationale Aufgaben T1 - Make them mature for the world! : some thoughts about the education of an elite for international tasks N2 - While at the time of Goethe, Turkey and other parts of the world seemed to be far away. Today’s Germany is confronted with the pressure of globalization. With regard to environmental issues or the threat of terrorism, international co-operation and combined efforts are strongly demanded. Unfortunately, the German higher education system is not prepared to face these challenges. The article calls for the education of an elite at German universities, which is fit to work in national as well in international institutions. The author presents the Master’s of International Relations coursework at the Technical University of Dresden. Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11619 ER - TY - GEN A1 - Forsberg, Randall Caroline T1 - Das Dilemma der alleinigen Supermacht : zu einigen militärpolitischen Trends in den USA T1 - Trends in U.S. military policies N2 - The end of the Cold War opened a window for a new era in world security. Instead of rising to this extraordinary occasion, the United States has adopted a regressive Great Power approach to military security. Rather than promote 'win-win' solutions for peace, security, disarmament, and democracy, it treats international security as a 'zero-sum' game. This article discusses examples in the areas of military spending, military research and development, and arms production and export. It also looks at US policy regarding the use of force, including the role of the United Nations, military intervention in other nations, military alliances, and multilateral military action. In conclusion, the article comments on whether we can expect more constructive action under a new administration and congress. Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11537 ER - TY - GEN A1 - Montag, Claus T1 - Die USA und die internationale Abwicklung der DDR im Vereinigungsprozeß T1 - The USA and the German unification process N2 - The Bush Administration supported, earlier than some West European NATO partners, the reunification of the two German states. When the crisis of the political system in East Germany escalated in 1989, the US-government tried to link the support for far-reaching democratic reforms with a rapid involvement of all NATO members in the unification strategy of the Bonn government. For the Bush administration, the most complicated task was to convince the Moscow leadership that a loss of the GDR as a strategic domain in the Central Europe, and NATO membership of a united Germany, would not undermine security interests of the Soviet Union. At the End of the East-West-Conflict, German unification was in full accordance with the global strategic interests of the United States. Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11548 ER - TY - GEN A1 - Sakson, Andrzej T1 - Die Nationalitätenpolitik der III. Republik T1 - The National Policy of the Third Republic N2 - The comprehensive transformation after the breakdown of communist rule was also reflected in a profound change in national policies. The dominating approach in the days of the old regime were grounded in the concept of a single nation state. The years since 1989 witnessed a rise of new democratic attitudes towards national and ethnic minorities. National minorities make up 3 to 4% of the population. Their total number is estimated to be approximately 1.0 to 1.3 Million people. Contemporary national policy rejects the principle of assimilation (polonization) of national and ethnic minorities while supporting their integration. Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11552 ER - TY - GEN A1 - Sattar, Abdul T1 - Pakistans Sicherheitspolitik : die Reduzierung der nuklearen Gefahr T1 - Pakistan’s security policy and the reduction of the nuclear risk N2 - The security policy of Pakistan is aimed at a reduction of nuclear threats in the South Asian region. It is only natural, that a state, whose national security is endangered by a mighty neighbor, will have to strengthen its defense capacities. Unfortunately, the effective collective measures to prevent and to remove threats to peace and international security as laid down in the Charter of the United Nations prove to be an unreliable promise. Ever since India carried out its first nuclear tests in 1974, Pakistan has been forced into a race to catch up with the capabilities if its neighbor. Nevertheless, Pakistan chose a minimalist approach and refrained from converting its nuclear capabilities into weapon systems. Pakistan is against an arms race in the South Asian region, and opposes the concept of first use of nuclear weapons. To ensure lasting peace, a common vision on disarmament is necessary. Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11585 ER - TY - GEN A1 - Mols, Manfred T1 - Die internationale Qualifikation der außenpolitischen Elite Deutschlands T1 - On the quality of Germany’s foreign policy elite N2 - Confronted with new dimensions of international problems, Germany needs a new foreign policy elite that is able to deal with the pending challenges in world politics. Therefore, the author points out, it is necessary to reorganize the German way to recruit personal for international tasks and the manner of its education at German universities. Furthermore, the German society should revise its general hostile attitude towards the elite and recognize it as an important driving force in politics. Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11607 ER - TY - GEN A1 - Leiteritz, Ralf J. T1 - Deutsche Eliten, ihre Universitätsausbildung und Global Public Policy T1 - The German elite, its formation, and Global Public Policy N2 - The author detects some of the causes for the less than satisfactory representation of the German foreign policy elite on the international level within the German university structure. The article also reflects upon the issue of the 'content' of a possible and desirable German 'Weltpolitik' which is seen in Global Public Policy - an example of which is provided and reasons given for the ability of the German elite to be proactively engaged in the promotion and management of Global Public Policy Networks. Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11592 ER - TY - GEN A1 - Croissant, Aurel A1 - Thiery, Peter T1 - Von defekten und anderen Demokratien T1 - Defective and other democracies N2 - After the democratic euphoria of the early 1990s, today the "third wave of democratization" seems to be less a triumph of political liberalism and much more a success story of a "defective" form of democracy. The authors argue that none of the strategies which can be found in contemporary democratization studies is satisfactory. They offer an alternative two-step-strategy of (1) specifying the root concept of democracy and (2) building subtypes of democracy which are based on this specified root concept. In doing so, the authors conceptualize the model of embedded democracy, from which they generate the concept of "defective democracy" and present a typology of these "defective democracies". Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11629 ER - TY - GEN A1 - Crabtree, John T1 - Autoritarismus in Peru : das Fujimori-Regime T1 - Authoritarianism in Peru : the Fujimori regime N2 - The ten-years presidency of Alberto Fujimori in Peru is a classic example of the sort of hybrid democracy that emerged in various Latin American countries in the 1990s, combining a mixture of democratic and clearly non-democratic elements. Fujimori was one of the more autocratic Latin American leaders of the 1990s, he is being the only regime formally to break with pre-existing constitutional rules. Closely tied to the military and intelligence apparatus, his government involved a concentration of political power that reduced the scope and autonomy of other branches of the state. But, unlike previous Latin American military dictatorships, Fujimori’s government enjoyed a considerable popularity, born out of disaffection for representative institutions. The article argues, however, that these characteristics of apparent strength carried within them the seeds of their own destruction. Far from establishing lasting political stability, the regime was weakly based. Within six weeks of his inauguration for a third term in July 2000, Fujimori was obliged to announce his intention to withdraw from politics. Two months later, he was ousted altogether. Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11630 ER - TY - GEN A1 - Klose, Hans-Ulrich T1 - Wo stehen wir? Was wollen wir? : Zur Debatte um deutsche Eliten und Außenpolitik T1 - Where do we stand? What do we want? : German elites and foreign policy N2 - According to the author, chairman of the Foreign Policy Committee in the German parliament (Bundestag), German foreign policy is based on a strong parliamentary consensus: continuing as a Western European country, co-operating with our partners in the European Union and the NATO, acting as a responsible member of UN and OSCE. Germany firmly stands up to these basic decisions, also today in a changed world, concentrating on reaching two major goals: building up a new security architecture for Europe as a whole and reuniting Europe by enlarging the European Union. Moderate and co-operate in style, Germany will continue to be a reliable partner, willing and ready to accept even more responsibilities in Europe and beyond Europe. Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11648 ER - TY - GEN A1 - Ludwig, Joachim A1 - Kielmann, Harald T1 - Beraten statt Verkünden : neue Wege in der gewerkschaftlichen Bildungsarbeit N2 - Es gibt aus unserer Sicht eine Reihe von Gründen, sich in der gewerkschaftlichen Bildungsarbeit von der Dominanz des Lehrplans abzuwenden und sich an Stelle dessen dem Lernenden in einer Weise zuzuwenden, die seine Deutungen, seine Handlungsmotive und seine Lerninteressen in den Vordergrund stellt. Für den Bildungspraktiker ergeben sich Gründe vor allem aus der wiederholten Erfahrung von Diskrepanzen. Erstens die Diskrepanzen, die zwischen der Definition von Lehrzielen und ihrem Erreichen in der Erwachsenenbildung bestehen. Zweitens die Diskrepanzen, die zwischen dem tatsächlich erlernten Wissen und seiner Umsetzung und Anwendung in der Praxis sich auftun. (aus dem Inhalt) T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - paper 019 Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-13875 ER - TY - GEN A1 - Sprengel, Rainer T1 - Politische Grenzen und politische Karten T1 - Political frontiers and political maps N2 - The author shows the strong relation between political developments, frontiers and their graphical representation on maps. Human rights, economic globalisation and the European integration process do change national policy and erode classical border lines. Still today, maps with lines and colours as their main graphic elements represent the world of the 19th century with separate national states in atlases, schoolbooks and electronic media. The main argument of the article insists on stressing the political character of maps and showing the contradiction between the cartographic picture of the world and the recent international transformations. The author concludes with the question of whether maps can reproduce these new developments at all. Y1 - 1999 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11435 ER - TY - GEN A1 - Hoffmann, Arthur A1 - Longhurst, Kerry T1 - German strategic culture and the changing role of the Bundeswehr N2 - The article mobilises the concept of strategic culture in order to identify the impact of history upon contemporary security policy. The article will first look at the "wholesale construction" of a strategic culture after the Second World War in West Germany before exploring its impact upon security policy since the end of the Cold War in two areas: the Bundeswehr's out-of-area role and conscription. The central argument presented here is that the strategic culture of the former Federal Republic now writ large on to the new united Germany sets the context within which security policies are designed. This strategic culture, as will be argued, acts as both a facilitating and a restraining variable on behaviour, making certain policy options possible and others impossible. Y1 - 1999 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11448 ER - TY - GEN A1 - Archer, Clive T1 - The EU, security and the Baltic region N2 - The end of the cold war division of the Baltic Sea in 1989, and the three Baltic states’ return to independence in 1991 created new opportunities for the decision-makers of the area, as well as new possibilities for fashioning security in the region. This article will examine the security debate affecting the Baltic Sea region in the post-cold war period, and in particular, the relevance of the European Union to that debate. The following section will examine various concepts of security relevant to the Baltic region; the third section looks at the EU and the Baltic area; and the last part deals with the implications that EU membership by the Baltic Sea states may have for the security of the Baltic Sea zone. Y1 - 1999 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11453 ER - TY - GEN A1 - Zaborowski, Marcin T1 - Polens Westgrenze : zwischen rationaler Politik und historischer Erinnerung T1 - Poland’s Western border : between political rationality and historical memory N2 - The border between Germany and Poland today is undisputed and definite, and thought to promote great co-operation and a culture of good-neighbourliness. Relations between the two governments are progressing nicely. But public opinion and behaviour are still lagging behind. The author describes how thought and emotions on the Polish side are still influenced by memories of the past, especially of the German occupation during the Second World War, and the slow pace of progress in overcoming that memory. He shows that the "shadows of history" have strongly influenced Polish politics in the context of German reunification. Special emphasis is given to the role of the Catholic Church in the controversial debate on the relations towards Germany in the 1950s and 1960s. Y1 - 1999 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11466 ER - TY - GEN A1 - Imhof-Rudolph, Heike T1 - Rentenversicherung in Singapur : der Central Provident Fund T1 - The retirement security system within the Singapore Central Provident Fund N2 - Considering the problems of retirement security systems leads one to look beyond the border in order to get a glimpse of the way things work in other societies. Contrary to formal public pension schemes in South American and East European industrial countries, the predominant pension system in Asia is of an informal nature, based upon the extended family structure. The rise of the city-state of Singapore has been accompanied by the development of a comprehensive social security system within the framework of the Central Provident Fund (CPF). The CPF is based on a symbiosis of Western social concepts and Eastern pragmatism. The article gives an insight into the development of this system, and the way it works underpresent political and economic conditions. Y1 - 1999 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11478 ER - TY - GEN A1 - Krüger, Joachim T1 - Rußland und China : eine strategische Partnerschaft? T1 - Russia and China : a strategic partnership? N2 - During the 1990s the relations between Russia and China developed intensivly. At the highest level, between 1992 and 1998, six summits took place. Both countries declared a "strategic cooperative partnership", designed to contribute to a "multipolar world" and a "well-balanced international political order". Both Russia and China endaveour to use their alliance to raise the importance of their respective places compared against the USA, EU and Japan. Policy changes in Russia have been especially instrumental in solving former conflicts between the two countries, and in developing a new quality to the bilateral relationship. Both countries have shown a strong interest in political and territorial integrity, both expect much from the markets, they need each other as partners in developing new weapon systems and both expect many advantages by normalising the situation along their joint borderline. Though future prospects of a Russian-Chinese partnership are reasonably foreseeable, it is clear that differences will remain. A complete balance of interests may not be seen. Y1 - 1999 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11489 ER - TY - GEN A1 - Thomi, Walter T1 - Nationalstaatliche Regulation und Dezentralisierung : Local Government Reform in Ghana T1 - National regulatory frames and decentralisation : the case of Ghana N2 - Ghana’s local government system has been subject to various reform attempts which all involved some sort of decentralisation. This article tries to link decentralisation to changing national policy frames and the various governments’ need to maintain political control. Consequently, decentralisation becomes a dependent variable of the so called bureaucratic development state. After a brief discussion of the colonial and post-colonial local government system in Ghana, emphasis is placed on the crisis of the post colonial state and the emergence of a new local government system in 1988 - which was successfully transformed into the administrative system of Ghana’s 4th republic after 1992. Local participation has been substantially improved an sustained by the introduction of the District Assemblies Common Fund in 1993 which transfers 5% of the national tax income to the districts. Y1 - 1999 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11523 ER - TY - GEN A1 - Frimmel, Fritz Hartmann A1 - Kumke, Michael Uwe T1 - Optische Parameter zur Stoffcharakterisierung vom Trinkwasser bis zum Abwasser N2 - Die Anwendung von optischen Parametern zur Stoffcharakterisierung wird diskutiert. Dabei ist der Schwerpunkt der Diskussion auf absorptions- und fluoreszenzspektroskopische Methoden gesetzt. Beide Methoden können schnell und zuverlässig – auch im on-line Betrieb – eingesetzt werden. Der Beitrag soll einen Überblick über die grundlegenden Möglichkeiten der Anwendung beider Methoden geben. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 025 KW - Absorptionsspektroskopie KW - SAK KW - Fluoreszenzspektroskopie KW - Summenparameter KW - Huminstoffe KW - polyzyklische aromatische Kohlenwasserstoffe Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-13088 ER - TY - GEN A1 - Herrmann-Pillath, Carsten A1 - Qiuxia, Zhu T1 - Stille Föderalisierung oder kalte Desintegration? : Zum institutionellen Wandel des chinesischen Steuerstaates T1 - Quiet federalization or cold disintegration : the institutional change of the Chinese fiskal system N2 - The fiscal reform of 1994 was introduced to strengthen the redistributive function of central government. In the aftermath of the reform it turned out, however, that the dominating cleavage is not necessarily the rivalry between "centre" and "regions", mainly because of the very complex relationships within the provinces. Though taxation itself is highly centralized there is a growing tendency of expensation of "extra-budget revenues". That is why the share of the central government concerning all revenues fell to 27%, falling considerably short of the purpose of the fiscal reform to increase the rate of central redistribution to 60% of the national fiscal ressources. Local communities have turned out to be rather successful in collecting non-tax revenues, concentrating on the non-state sectors of the economy. The problem is not so much the threat of fiscal decentralization but the definition of rules and procedures in the relationship between centre, provinces and local administrations. Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11426 ER - TY - GEN A1 - Lübbe, Hermann T1 - Technokratie : politische und wirtschaftliche Schicksale einer philosophischen Idee T1 - Technocracy : political and economic destinies of a philosophical idea N2 - Nowadays the term "technocracy", which means the elimination of politics by the rule of scientific reasoning, is most often used with a quite negative overtone. Technocrats are described as experts without morals, able to function in any kind of political system. Nevertheless one should remember that the technocratic idea contained from the very beginning a strong ethic element: conventional political power as an instrument of repression should be replaced by the rule of sciences as an instrument to improve human life. Although the idea of eliminating politics by "science-based" decisions of an autocratic leadership has been widely used to legitimate totalitarian rule, it is obvious, that clear technocratic reasoning and decision making do not go conform with the functioning of a totalitarian system. On the contrary, technic and technologic innovation accelerated the breakdown of totalitarianism. The complex character of modern societies calls for regulation by markets and pluralistic political systems. The evolution of our technical civilization improved the conditions for democratic selforganisation. Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11355 ER - TY - GEN A1 - Roesler, Jörg T1 - Demokratische und technokratische Wirtschaftsreformer in der DDR : die politischen Schicksale von Fritz Behrens und Wolfgang Berger T1 - Democratic and technocratic comprehension of the economic reforms in the GDR : the examples of Behrens and Berger N2 - The economic reforms in the German Democratic Republic during the 60s, known as "New Economic System" (NES) or "Economic System of Socialism" (ESS) have been characterised by historians as truly technocratic. What is often not known is the fact, that during the first debate on economic reform in Eastern Germany in 1954-1958 the idea of democratic reform was prominent thanks to the role and writing of the outstanding GAR economist Fritz Behrens, who favoured a diminished role of the state in the economy and the self-rule of the workers in the factories. Behrens and his followers were denounced by party leader Walter Ulbricht as "revisionist". Together with his economic advisor, Wolfgang Berger, originally a scholar of Behrens’, he started the NES and ESS in the 60s. Behrens remained barred from the management of the reform, in which Berger plaid a prominent role. When Behrens began again to publish his demands for a democratic reform in 1967, thus intervening in the progress of the reform, he was forced to leave his academic job into retirement. In 1971, Erich Honekker succeeded Ulbricht. The economic reform was stopped. And Berger lost his job, too. Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11369 ER - TY - GEN A1 - Pauer, Jan T1 - Moralisch-politischer Dissens in den deutsch-tschechischen Beziehungen T1 - Moral-political dissent in German-Czech relations N2 - Since 1989 the German-Czech relationship has been burdened by the problem of a just assessment of World War II and the following forced transfer of the Sudeten Germans. Why are democrats on both sides who acknowledge the same values and principles unable to reach an agreement about crucial events in the past? The political and legal differences imply a moral dissent which is not being discussed systematically. The article tries to investigate the deficits of the moral arguments on both sides. Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11371 ER - TY - GEN A1 - Mols, Manfred T1 - "In the National Interest" : Australiens Außenpolitik am Ende des 20. Jahrhunderts T1 - In the National Interest : Australia’s foreign policy at the end of the 20th century N2 - In August 1997 the Australian Government released the first White Paper ever issued on its foreign policy. As one important element, this essay tries to delineate the pro Asia-Pacific shift of Australia’s international economic and security orientations, particularly since the early 1970s - a foreign policy which could rest upon an certain bipartisan basis. The recently launched White Paper represents a new reflection upon Australia’s national interests and a soft relativisation of the strong emphasis on regional and multilateral foreign policy performances of former governments. According to a least the author’s judgement, the fundamental legacy of Australia’s international relations remain: a certain (a definite?) contradiction between the country’s predominant cultural and ethnic (!) heritage on the one hand and its geographical location on the other. Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11383 ER - TY - GEN A1 - Heuser, Robert T1 - Auf der Suche nach einem neuen Ideal : zu Theorie, Norm und Praxis des Rechtsstaats in der VR China T1 - In search of a new ideal : theory, norm and practice of the Rechtsstaat in the People’s Republic of China N2 - Besides establishing a legal system for the needs of economic construction, legal theory and legislation in China are extending their concern from an instrumental concept of law to a more value based notion, thus supplementing "rule by laws" by elements of the "Rechtsstaat" (rule of law). Whereas legal and constitutional theory take more and more bold views concerning integrating structures of checks and balances and division of powers into the legal system, urging for statutory control of the ruling party, for reforming the National People’s Congress into a responsible legislative body based on real representation of the people, providing for constitutionality of legal norms by a system of judicial review etc., legislation has started to deal with certain aspects of the Rechtsstaat in fields as administrative, criminal and criminal procedure law. In view of grave problems of implementation, this legislation may partly be regarded more to be an expression of intention to develop gradually a new ideal and a new legitimation for the political system than well established actual practice. Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11392 ER - TY - GEN A1 - Gottwald, Jörn T1 - Democratizing Hainan : das Konzept "Kleine Regierung, große Gesellschaft" T1 - Democratizing Hainan : the concept "Small government, big society" N2 - In 1988, the Government of the People’s Republic of China established the island of Hainan as a province and made it a Special Economic Zone. While the hope for a spectecular economic take off was the main driving force behind this decision, it provided China with an area where far reaching trial-and-error politics could be. Hence the new provincial government was granted the privilege of setting its own legal framework for administering the special economic policies and establishing a governmental structure guided by the principle of "Small government, big society". Although some of the efforts to reduce the administration in terms of scope and resources, to develop and strengthen non-governmental organizations and provide economic actors with a minimum of freedom and reliability proved successful, the overall results are mixed: While well-being and opportunities for self-fulfillment clearly grew, political participation is still confined to areas defined by the Communist Party. Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11407 ER - TY - GEN A1 - Trautner, Bernhard J. T1 - Hegemonialmächte im Vorderen und Mittleren Orient : die Dritte Partei in internationalen Konflikten T1 - Hegemons in the Near and Middle East : the Third Party in International Conflicts N2 - During the last five decades hegemons played an important role in de-escalating international conflicts in the subregion defined as the core of Oriens Islamicus. Statistical analysis of large datasets shows that half of all conflicts remained without any interference from the hegemonial powers at all - both on global scale and in the subregion. In all other cases however, hegemons (especially super-powers in the role of patrons) tended more often to act as (power-) mediators when their client-state was engaged in conflict with a client of the opposing superpower in Oriens Islamicus than they did on global scale. They did this in their own interest in order to avoid direct involvement, i.e. possible danger of a nuclear escalation. In contrast to conventional mediation theory they were more effective in conflict de-escalation than other mediators, especially in conflicts between Israel and its Arab neighbours. The end of bipolarity in the international system also brought this mechanism of de-escalation to an end. It leaves the hegemon(s) as a potentially powerful third party on the one hand, but on the other their inclination to become involved in regional conflict remains rather diminished as long as the basic national interests in the area are not at stake. Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-7998 ER - TY - GEN A1 - Korte, Werner T1 - Prozesse des Staatszerfalls in Liberia T1 - Processes of state collapse in Liberia N2 - Since the end of the year 1989 Liberia has been ravaged by a bloody civil war. It has almost completely destroyed the state structure of Liberian society which was manipulated by military ruler Samuel Doe and a small elite with the ends of amassing wealth and retaining power during the decade of 1980 to 1989. The state and almost all political institutions were stripped of credibility and legitimacy. During the war it was easy for the warlords of the various factions and their mostly young supporters to seize power and the remaining resources of the country. They established a radical free market system with the help of internationally operating companies and banks, protecting it by terror. Nearly two thirds of the population have left their homes and now live as refugees abroad, in the capital Monrovia or in Buchanan, where remnants of state structure and a weak civil society survive under the protection of a regional intervention army (Ecomog). By discussing different sociological explanations, the author traces the origins of the civil war and of its extreme brutality. Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11182 ER - TY - GEN A1 - Hain, Simone T1 - Der Berliner Städtebaudiskurs als symbolisches Handeln und Ausdruck hegemonialer Interessen T1 - Urban planning in Berlin as expression of hegemonial interests N2 - After overcoming the divergence from the general features of Western and international urban development caused by Germany's division, Berlin is catching up with and imitating almost all features of post-modern city formation constituted and demonstrated in the last two decades. Berlin is trying to make good its backwardness and to keep abreast of the metropolis in Europe and the world through a strategy aimed at a cultural re-evaluation of urban structure and architecture. The so-called Prussian style based on the Classicist tradition of the beginning of the 19th century is the historical and asthetic horizon. A small administrative and architectural elite pushing the redefinition of the social, political and asthetic meaning of public space ignores consciously the architectural reality in the Eastern and Western parts of the city. Crucial objectives are the cultural, political and economic recapturing of the traditional centre of Berlin profoundly marked by its socialist past and the protection of middle class interests. Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11348 ER - TY - GEN A1 - Hettlage, Robert T1 - Identitätsmanagement : soziale Konstruktionsvorgänge zwischen Rahmung und Brechung T1 - Identity management : processes of social construction between framing and breaking N2 - The self-awareness of the subject is always dependent on interaction with others. Thus, self-awareness and social awareness are two sides of the same coin. The Self is not only to be won through social ties with others, but at the same time through distance from them. So long as this does not lead to isolation, there is a possibility of working out common values and identities. The construction of common identities is a process of social definition and construction. Materials for this are space-time, social, cultural, economic, and administrative-legal attributes which are transformed into identity-building attributes. Ethnic movements are often portrayed as social dramas. The processes of institution-building and nation-building never stop. Their supporters relate identity management to the central nation-state and consensus, possible minorities count on a strategy of differentiation and conflict instead. Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11275 ER - TY - GEN A1 - Woderich, Rudolf T1 - Gelebte und inszenierte Identitäten in Ostdeutschland T1 - Lived and staged identities in East Germany N2 - Germany gained its unity, but the restoration of virtual national cohesion presents itself as a lasting problem. The rebuilding of common national identity forms one complex aspect. Particular West and East German political, social and cultural features still exist. The East Germans brought elements of a peculiar identity into the unity; as a repercussion of some setbacks in their position and of some actual inter-German distinctions, their peculiarities are not yet in retreat. They prolong their role as conventional feelings, in temporary behaviours as an answer to their actual stance, and to a certain extent also with traits staged and suggested by entrenched media interpretations about the presently hampered inter-German evolution. Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11288 ER - TY - GEN A1 - Kosman, Marceli T1 - Litauen : Legenden einer großen Vergangenheit und Realitäten der Gegenwart T1 - Lithuania : legends of a great history and realities of the present day N2 - Lithuania and Poland had cooperated for centuries and even created a political union. The pacts had been very useful for both sides and consequently, the peoples and especially the Lithuanian elite was ready to absorb parts of the Polish culture. Lithuania broke with this tradition dating back to the Middle Ages only after the first division of Poland. During 1944- 1990, the so-called "Soviet period in Lithuania", two different processes could be observed: Russification and Lithuanification. Although dependent on Moscow, the leading Lithuanian politicians never forgot Lithuanian interests and supported the national conscience. After Lithuania gained independence in 1990, a huge wave of national enthusiasm swapped over the country. In the meantime, politicians came back to reality: The independence of Lithuania seems consolidated and the old tradition to re-establish the Polish-Lithuanian cooperation seems to be on the run since Aleksander Kwasniewski had visited Lithuania in January 1996. Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11292 ER - TY - GEN A1 - Kiaupiene, Jurate T1 - Replik zu Marceli Kosmans Version der litauischen Geschichte T1 - Reply to Marceli Kosman’s version of Lithuanian history N2 - J. Kiaupiene, a severe critic of Kosman’s ideas, presents a different view on Lithuanian history. Kosman's description of Lithuania's past is neither exact nor new. Scholars in Russia, Poland and Belorussia have interpreted Lithuania's history in very different ways. The reason for this variety is the difference of national interests. Kosman's view reflects Polish messianism and cultural hybris. But even among Lithuanian scholars there are conflicting views on this nation's history and cultural identity. Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11307 ER - TY - GEN A1 - Brenner, Neil T1 - Globalisierung und Reterritorialisierung : Städte, Staaten und die Politik der räumlichen Redimensionierung im heutigen Europa T1 - Globalisation and reterritorialisation : re-scaling of cities and states in today’s Europe N2 - In the rapidly growing literature on globalization, many authors have emphasized the apparent disembedding of social relations from their local-territorial preconditions. Such arguments neglect the relatively fixed and immobile forms of territorial organization upon which the current round of globalization is premised, such as urban-regional agglomerations and territorial states. Drawing on the work of David Harvey and Henri Lefebvre, this article argues that processes of reterritorialization - the reconfiguration of forms of terrritorial organization such as cities and states - must be viewed as an intrinsic moment of the current round of globalization. Globalization is conceived here as a reterritorialization of both socio-economic and political-institutional spaces that unfolds simultaneously upon multiple, superimposed geographical scales. The ongoing restructuring of contemporary urban spaces and state institutional-territorial structures must be viewed at once as presupposition, a medium and an outcome of this highly contested dynamic of global spatial restructuring. New theories and representations of the scaling of spatial practices are needed to grasp the rapidly changing territorial organization of world capitalism in the late 20th century. Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11314 ER - TY - GEN A1 - Crome, Erhard A1 - Franzke, Jochen T1 - Die DDR und Polen : Betrachtungen über das Verhältnis der Ostdeutschen zu den Polen T1 - The GDR and the Polish : considerations about the attitude of the East Germans to the Polish N2 - The attitude of the East Germans to the Polish is burdened with the heritage of the past. After 1945 the composition of the population on both sides of the new border along the Oder and Neisse rivers changed drastically. On the eastern side the Germans were expelled and Polish people were settled. On the western side many expelled Germans found a new home. Despite the fact that the GDR signed the Oder-Neisse border treaty, the ruling communist party (SED) did not encourage contacts between the people living on both sides of Oder and Neisse in the following years. The policy of the SED towards the Polish communists during the whole period between 1946-1989 was characterised by arrogance and suspicion, at times falling back on old anti-Polish stereotypes. Especially in the 1980s, the GDR tried to prevent the influence of Solidarnosc and dissident ideas from entering the country. Despite this policy, substantial personal contacts developed, particularly in the 1970s when the border was fully opened. The authors argue that current German-Polish relations should make use of these experiences. Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11261 ER - TY - GEN A1 - Hocking, Brian T1 - Bridging boundaries: creating linkages : non-central governments and multilayered policy environments N2 - Observers of international politics have been conscious of the growing international involvement of non-central governments (NCGs), particularly in federal systems. These have been supplemented by the internationalisation of subnational actors in quasi-federal and even unitary states. One of the difficulties is that analysis has often been locked into the dominant paradigm debate in International Relations concerning who and who are not significant actors. Having briefly explored the nature of this changing environment, marked by a growing emphasis on access rather than control as a policy objective and the emergence of what is termed a 'catalytic diplomacy', the discussion focuses on the need for linkage between the levels of government in the pursuit of international as well as domestic policy goals. The nature of linkage mechanisms are discussed. Y1 - 1996 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11126 ER - TY - GEN A1 - Hummel, Hartwig A1 - Wehrhöfer, Birgit T1 - Geopolitische Identitäten : Kritik der Ethnisierung einer sich regionalisierenden Welt als paradigmatische Erweiterung der Friedensforschung T1 - Geopolitical identities : broadening the peace research paradigm by criticizing the ethnic regionalization of the world N2 - The post cold war world order is popularly discussed in terms of what Samuel Huntington has called the "clash of civilizations". The authors hold that Huntington is just a prominent example of the trend which constructs geopolitical identities based on ethnic definitions of world regions, where ethnicitiy is understood to be a primordial, transhistorical and static understanding of cultural identities. In their paper, they extensively deconstruct this concept of ethnicity, drawing parallels with the history of nationalism and nation-building, and analyze its functions for legitimizing projects of building exclusive economic blocs in Europe, America and Pacific Asia. At present, ethnic concepts of world regions are competing with liberal, non-ethnic identities of the three world regions. Finally, the dangerous potentials of ethnic regionalization are discussed. From a peace research perspective, support for a common global identity of "mankind" is strongly advocated. Y1 - 1996 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11137 ER - TY - GEN A1 - Ferguson, Yale H. T1 - Rückwärtsgeschaut auf die gegenwärtige Politik : wider die fatalen Augenkrankheiten alter und neuer Realisten T1 - Looking backwards at contemporary polities N2 - The fatal "eye disease" that afflicts Realists and Neorealists, and even infects some self-styled Institutionalists and Constructivists, has several causes. In his polemical essay, the author defines these as historicism, the legalistic bias, the underestimation of non-state actors and the overestimation of the state as such. Discussing the linkage between loyality, ethnicy, and politics, he strongly argues for recognition of the fact that the world is groping for new political arrangements for which we simply do not have the appropriate ideas or words to describe. In the future, the range of political identities and loyalities in the global culture of "fragmegration" will extend beyond traditional multiculturalism. Y1 - 1996 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11148 ER - TY - GEN A1 - Wolff-Powęska, Anna T1 - Deutsche, Russen und Polen : Paradigmen der gegenseitigen Wahrnehmung T1 - Germans, Polish people and Russians : the paradigms of the mutual perceptions N2 - The transition and transformation within the three countries dealt with are still in process. In her essay, the author analyses whether there is a need for Poland to re-define its relationship to Germany and Russia, whilst searching for a new identity and a new place within Europe. She argues that there is a set of historical and geopolitical reasons for doing so. But whilst the Polish aim is to normalise its relationship to its neighbours, the perception of Russians and Germans in Poland is rather different. On the one hand, in the Polish people opinion, Germany is the main promoter of their European institutional integration wishes. On the other, relatively aggressive attitude towards Russia can also be identified. The essay is a strong plea for mutual responsibility and co-operation in favour of peace and security in Europe. Additionally Russia is to be regarded as part of European history, and should thus be involved in the European political process. Y1 - 1996 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11158 ER - TY - GEN A1 - Tomala, Mieczysław T1 - "Erzählen Sie keinen Unsinn, Genosse Ulbricht!" : Die VR Polen und die DDR in den 60er Jahren ; offizielle Harmonie und internes Mißtrauen T1 - "Don’t say such foolish things, Comrade Ulbricht! : The PR Poland and the GDR in the 1960s ; public harmony and internal distrust N2 - Gomułka’s harsh criticism of the Stalinist past and the introduction of liberal elements into the public life of Poland was not welcomed by the East German leadership. Ulbricht demanded full support for the sovereignty of the GDR and tried to prevent any independent Polish moves to come to terms with the Federal Republic. The Polish leadership strived towards a closer economic integration with the GDR and Czechoslovakia to foster industrial development in Poland and to bind the East German state more closely into the "socialist camp". These ideas were flatly rejected by the GDR. The level of economic interdependence between the two German states and the advantages of the GDR resulting from the "intra-German" status of trade and transfer of technologies provoked Gomułka’s distrust. Relations worsened even more when, towards the end of his time in power, Ulbricht moved towards a rapprochement with the FRG and showed some readiness to question the Görlitz treaty on the German-Polish border line. Y1 - 1996 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11164 ER - TY - GEN A1 - Hassner, Pierre T1 - Bürger und Barbar : über die Dialektik von Gewalt und Krieg in Philosophie und Geschichte T1 - The bourgeois and the barbarian : on the dialectics of violence and war in philosophy and history N2 - Are we witnessing a decline of war, the spread of violence or both? The growing number of wars and genocids conveys the impression of uncontrolled violence. Is there any possibility to overcome belligerent conflicts between states? Do imply social, technological, cultural or even anthropological changes moments which could shift the ground of state’s rivalry towards non-belligerent relationships? Peace trough interdependence and democracy seems possible. The priorities of modern states cannot be thought on the basis of attributes like sovereignty and territoriality. The peaceful 'bourgeois islands' not only bring about prosperity but increasing social exclusion as well. New phenomenon of ethnicism and religiosity often originate from, around and in their midst. Threats arising from terrorism and racial or religious riots are the consequences. There are two options, the author considers as possible: an "embourgeoisement" of the "barbarians" or a "barbarisation of the bourgeois". Or is there a new political form emerging? Y1 - 1996 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11114 ER - TY - GEN A1 - Howald, Markus A1 - Elsenbeer, Helmut A1 - Laczko, Endre A1 - Schlunegger, Urs Peter T1 - Capillary electrophoresis as a fast and universal tool in soil analysis N2 - Fast analysis of different species of molecules in soils is investigated by capillary electrophoresis (CE). Several CE techniques for the analysis of inorganic ions and carbohydrates have been tested. With regard to the intents of pedologists and the usually large number of soil analyses a bundle of CE systems is proposed, capable of effecting time-saving soil analyses. Adapted electrolyte systems recently published and new separation systems are described. Examples of the application of these methods to two different soil samples are presented. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 070 KW - capillary electrophoresis KW - soil analysis KW - UV-detection KW - inorganic ions KW - monosaccharides Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16913 ER - TY - GEN A1 - Elsenbeer, Helmut A1 - Lack, Andreas A1 - Cassel, Keith T1 - Chemical fingerprints of hydrological compartments and flow paths at La Cuenca, western Amazonia N2 - A forested first-order catchment in western Amazonia was monitored for 2 years to determine the chemical fingerprints of precipitation, throughfall, overland flow, pipe flow, soil water, groundwater, and streamflow. We used five tracers (hydrogen, calcium, magnesium, potassium, and silica) to distinguish “fast” flow paths mainly influenced by the biological subsystem from “slow” flow paths in the geochemical subsystem. The former comprise throughfall, overland flow, and pipe flow and are characterized by a high potassium/silica ratio; the latter are represented by soil water and groundwater, which have a low potassium/silica ratio. Soil water and groundwater differ with respect to calcium and magnesium. The groundwater-controlled streamflow chemistry is strongly modified by contributions from fast flow paths during precipitation events. The high potassium/silica ratio of these flow paths suggests that the storm flow response at La Cuenca is dominated by event water. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 047 KW - Chemistry of fresh water KW - Runoff and streamflow KW - Weathering Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16937 ER - TY - GEN A1 - Elsenbeer, Helmut A1 - Lorieri, Daniel A1 - Bonell, Mike T1 - Mixing model approaches to estimate storm flow sources in an overland flow-dominated tropical rain forest catchment N2 - Previous hydrometric studies demonstrated the prevalence of overland flow as a hydrological pathway in the tropical rain forest catchment of South Creek, northeast Queensland. The purpose of this study was to consider this information in a mixing analysis with the aim of identifying sources of, and of estimating their contribution to, storm flow during two events in February 1993. K and acid-neutralizing capacity (ANC) were used as tracers because they provided the best separation of the potential sources, saturation overland flow, soil water from depths of 0.3, 0.6, and 1.2 m, and hillslope groundwater in a two-dimensional mixing plot. It was necessary to distinguish between saturation overland flow, generated at the soil surface and following unchanneled pathways, and overland flow in incised pathways. This latter type of overland flow was a mixture of saturation overland flow (event water) with high concentrations of K and a low ANC, soil water (preevent water) with low concentrations of K and a low ANC, and groundwater (preevent water) with low concentrations of K and a high ANC. The same sources explained the streamwater chemistry during the two events with strongly differing rainfall and antecedent moisture conditions. The contribution of saturation overland flow dominated the storm flow during the first, high-intensity, 178-mm event, while the contribution of soil water reached 50% during peak flow of the second, low-intensity, 44-mm event 5 days later. This latter result is remarkably similar to soil water contributions to storm flow in mountainous forested catchments of the southeastern United States. In terms of event and preevent water the storm flow hydrograph of the high-intensity event is dominated by event water and that of the low-intensity event by preevent water. This study highlights the problems of applying mixing analyses to overland flow-dominated catchments and soil environments with a poorly developed vertical chemical zonation and emphasizes the need for independent hydrometric information for a complete characterization of watershed hydrology and chemistry. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 048 KW - SOILWATER END-MEMBERS KW - HYDROGRAPH SEPARATION KW - STREAMWATER CHEMISTRY KW - ACIDIFICATION KW - MIXTURE KW - TRACERS KW - EVENTS Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16948 ER - TY - GEN A1 - Winkler, Rainer T1 - Deutschlands geopolitische Lage im sich wandelnden Europa T1 - Germany´s geopolitical situation in a changing Europe N2 - Based on the discussion on Germany´s new 'central location', the author tries to sketch Germany´s geopolitical position in view of the constellation of powers in Europe from a national point of view. This favourable position offers a great chance for the country to play an active role in Europe’s integration. However, German historical heritage as well as the delicate relationship of Germany´s political elite to the use of power are reasons for the country´s hesitation to fulfill her neighbours’ and her allies’ expectations. Anyhow, Summaries 192 rooted in the West-European and transatlantic integration is Germany the natural dooropener for its Eastern, South-Eastern and Baltic neighbours to become 'members of the club'. ) Jahresabo: 40,00 € (ermäßigt: 25,00 €) Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11067 ER - TY - GEN A1 - Gipouloux, Francois T1 - Die neue Rolle der Städte in den chinesischen Küstenzonen : internationale Interaktion und Spezialisierung T1 - The new role of coastal cities in China : international interaction and specialization N2 - The Chinese coastal cities play an increasing economic role in the Yellow Sea region. The inclusion of these cities into the intra Asian economic cooperation is accomplished not only in the conventional sphere of trade but also by a growing involvement in telecommunication networks, technological exchange and the circulation of human resources. That is why these cities emerge as autonomous actors in the East Asian integration process. In this context national states face deep structural change, especially in the field of sovereignty and territory. Concerning the internal situation of China, this change could also cause a turn over of the relationship between the central government and the regions. Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11087 ER - TY - GEN A1 - Carty, Anthony T1 - Der gescheiterte Staat, Gewalt und die Chancen des Völkerrechts T1 - The concept of state, violence and international law N2 - The article argues that the concept of statehood is not functioning any longer. It exists a crisis for the international legal order which is represented by the failure of state to maintain order within its borders. The problem of violence in international relations are connected to the implosion of a considerable number of the state entities in the contemporary international society. The federalist institutional approach in international law and international theory could not contribute in an appropriate way to the solution of the "problem of violence", because it supposes a willingness on the part of states to do so. Only the concept of "national interest", in a sociological sense, connected to the development of a discource of solidarity and mutual responsibility between the "West" and the "rest of the world" offers the possibility to create a common consciousness which could make it easier to overcome the contemporary crises for the international legal order. Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11092 ER - TY - GEN A1 - Gerhardt, Volker T1 - Eine kritische Theorie der Politik : über Kants Entwurf Zum ewigen Frieden T1 - A critical theory on politics : reflections about Kant's "Perpetual Peace" N2 - The failure of politics is closely connected with deeply rooted misconceptions about the term politics. The author argues that a re-reading of Immanuel Kant's work "The Perpetual Peace" written 200 years ago offers a challenging possibility for a new conceptualization of politics, morality and peace. Morality is seen by Kant as an essential dimension of politics and the implementation and acknowledgement of laws by moral demands is defined as a precondition for a community of free citizens. In its public discourse politics does require law and morality. Deriving future rights from existing laws is one of the most favored argumentation used by politicians in the public. If the needs of law and justice are interpretated by politicians in their own interest, i.e. above all guarantees for the realization of political selfdetermination, then a real chance will exist for improving peace in the future. Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11107 ER - TY - GEN A1 - Wallraf, Wolfram T1 - Does Theory Matter? : Zur Leistungsfähigkeit integrationstheoretischer Ansätze bei der Untersuchung asiatisch-pazifischer Realität T1 - Does theory matter? : re-examining the potential of integration theory in the case of Asia-Pacific development N2 - There is sufficient evidence of integration processes in the Asia-Pacific rim. But these processes differ profoundly from the European case. On the other hand integration theory up to the present day has been based mainly on the European evidence. Does this mean, that conventional integration theory is irrelevant in the case of the Asia-Pacific development? This contributuion tries to re-examine the theoretical capacity of various approaches (institionalism, functionalism, regionalism, flying geese pattern, regime-theory) when applied to the realities of transnational interaction and international organization in the Asia-Pacific rim. Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11073 ER - TY - GEN A1 - Ascher, Uri M. A1 - Chin, Hongsheng A1 - Reich, Sebastian T1 - Stabilization of DAEs and invariant manifolds N2 - Many methods have been proposed for the stabilization of higher index differential-algebraic equations (DAEs). Such methods often involve constraint differentiation and problem stabilization, thus obtaining a stabilized index reduction. A popular method is Baumgarte stabilization, but the choice of parameters to make it robust is unclear in practice. Here we explain why the Baumgarte method may run into trouble. We then show how to improve it. We further develop a unifying theory for stabilization methods which includes many of the various techniques proposed in the literature. Our approach is to (i) consider stabilization of ODEs with invariants, (ii) discretize the stabilizing term in a simple way, generally different from the ODE discretization, and (iii) use orthogonal projections whenever possible. The best methods thus obtained are related to methods of coordinate projection. We discuss them and make concrete algorithmic suggestions. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 030 Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-15625 ER - TY - GEN A1 - Leimkuhler, Benedict A1 - Reich, Sebastian T1 - Symplectic integration of constrained Hamiltonian systems N2 - A Hamiltonian system in potential form (formula in the original abstract) subject to smooth constraints on q can be viewed as a Hamiltonian system on a manifold, but numerical computations must be performed in Rn. In this paper methods which reduce "Hamiltonian differential algebraic equations" to ODEs in Euclidean space are examined. The authors study the construction of canonical parameterizations or local charts as well as methods based on the construction of ODE systems in the space in which the constraint manifold is embedded which preserve the constraint manifold as an invariant manifold. In each case, a Hamiltonian system of ordinary differential equations is produced. The stability of the constraint invariants and the behavior of the original Hamiltonian along solutions are investigated both numerically and analytically. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 032 KW - differential-algebraic equations KW - constrained Hamiltonian systems KW - canonical discretization schemes KW - symplectic methods Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-15653 ER - TY - GEN A1 - Ascher, Uri M. A1 - Chin, Hongsheng A1 - Petzold, Linda R. A1 - Reich, Sebastian T1 - Stabilization of constrained mechanical systems with DAEs and invariant manifolds N2 - Many methods have been proposed for the simulation of constrained mechanical systems. The most obvious of these have mild instabilities and drift problems. Consequently, stabilization techniques have been proposed A popular stabilization method is Baumgarte's technique, but the choice of parameters to make it robust has been unclear in practice. Some of the simulation methods that have been proposed and used in computations are reviewed here, from a stability point of view. This involves concepts of differential-algebraic equation (DAE) and ordinary differential equation (ODE) invariants. An explanation of the difficulties that may be encountered using Baumgarte's method is given, and a discussion of why a further quest for better parameter values for this method will always remain frustrating is presented. It is then shown how Baumgarte's method can be improved. An efficient stabilization technique is proposed, which may employ explicit ODE solvers in case of nonstiff or highly oscillatory problems and which relates to coordinate projection methods. Examples of a two-link planar robotic arm and a squeezing mechanism illustrate the effectiveness of this new stabilization method. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 033 Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-15698 ER - TY - GEN A1 - Schrader, Lutz T1 - Deutschland und die europäische Sicherheitsagenda Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-28999 ER - TY - GEN A1 - Tomassini, Luciano T1 - Eine postmoderne Sicht der internationalen Beziehungen N2 - The dramatic changes in international relations characterized by the terms "Complex Interdependence" and "Segmentary Globalization" call for new explanation. The author considers the post-modern approaches, a critical analysis of which he presents, to be one possibility to do that. In studies of international policy, these post-modern influences are gaining ground in disputes with realistic and neo-realistic approaches, and they can also clearly be felt in Latin America. Tomassini, based on the historic experiences of Latin America, forcefully calls for an active and constructive incorporation of the region into international developments. For that, Latin-American societies have to establish modern, and open political as well as economic systems which are able to meet those challenges. Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-10985 ER - TY - GEN A1 - Krüger, Joachim T1 - Zu Gast in Peking : die DDR und die VR China in den 80er Jahren T1 - Visiting Peking : the relationship between the GDR and the People's Republic of China in the 1980s N2 - Taking the visit of Erich Honecker to China as an example, the author analyses the bilateral GDR-Chinese relations in the 1980s. Based on extensive original research, the objectives as well as disappointed hopes are presented. The author reveals that not Honecker played the "Chinese Card", but he himself became part of Chinese politics. At the same time, the contradictory reaction to that visit in Moscow are documented when, with the election of Gorbachev, first signs of a change in Soviet policy toward China were indicated. Jahresabo: 40,00 € (ermäßigt: 25,00 €) Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-10999 ER - TY - GEN A1 - Elsenhans, Hartmut T1 - Staat - Wirtschaft - Macht und die Zukunft des internationalen Systems T1 - State, economy, power and the future of the international system N2 - Underlying the importance of revenue the author discusses the future of the international order from the perspective of political economy. The international system will not be a capitalist one. Political conflicts will not be removed by nonviolent market regulations. Weakness of labour force and a dominant role of revenue will further more result in political interventions by nation states. The struggle for revenue to maintain comparative advantages in high-tech-development strengthens state intervention in order to protect domestic market. The failure of the "development state" in the third world and the rising of fundamentalistic tendencies supported by a market-oriented middle class will increase conflicts in those regions. Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11019 ER - TY - GEN A1 - Derichs, Claudia T1 - Japans Neue Linke : die selbsternannte Avantgarde T1 - Japan’s New Left N2 - Although without providing a systematical comparison, it has become clear that the sects or party-factions of Japan’s New Left movement are by no means merely copies of their counterparts in the West. On the other hand their conduct may not be judged as to be a unique Japanese phenomenon. What they embody is, on the whole, a complex symbiosis of universal and particularly Japanese features, which can be observed in the fields of social behavior, organizational structure, and group dynamics. The particularity of the New Left factions is mostly revealed through the higher intensity of specific features rather than through pecularities found only in Japan. Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11029 ER - TY - GEN A1 - Jacobsen, Hans-Adolf T1 - Geopolitik im Denken und Handeln Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11035 ER - TY - GEN A1 - Klingebiel, Stephan T1 - Flucht und Vertreibung in Entwicklungsländern T1 - Flight and Expulsion in Less Developed Countries N2 - Flight and expulsion are and will remain important international problems. The existence of refugees is a result of unsolved domestic tasks. Thus, effective solutions require comprehensive and long-term strategies. So far the efforts to reduce the causes of escape have not been sufficient. In the current refugee crises millions of people can survive only with the help of an efficient international system (for example the UNHCR) that guarantees humanitarian aid and protection. However, this system has turned out to be inadequate although the potential of preventive action is sufficient to reach a major progress in diminishing the refugee problem. Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11048 ER - TY - GEN A1 - Crome, Erhard T1 - Woher und wohin? : Zur Analyse der osteuropäischen Transition T1 - What about the past? What about the future? : towards an analysis of East-European transition N2 - There has never been a theory of transition from really existing Socialism to a democratic and market-oriented system. Different theoretical approaches are taken into consideration by the author. Experiences of other transitional processes are practicable on Eastern Europe in a limited way. The missing of socio-structural differentiation, the socio-cultural consequences of the really existing Socialism and the international conditions did not promote the transition. It seems that the transition in Eastern Europe is obviously not a change from one political system to another one, but for the time being an open process. Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11007 ER - TY - GEN A1 - Watanabe, Yuji A1 - Püschel, Gerhard Paul A1 - Gardemann, Andreas A1 - Jungermann, Kurt T1 - Presinusoidal and proximal intrasinusoidal confluence of hepatic artery and portal vein in rat liver : functional evidence by orthograde and retrograde bivascular perfusion N2 - The site of confluence of the artery and the portal vein in the liver still appears to be controversial. Anatomical studies suggested a presinusoidal or an intrasinusoidal confluence in the first, second or even final third of the sinusoids. The objective of this investigation was to study the problem with functional biochemical techniques. Rat livers were perfused through the hepatic artery and simultaneously either in the orthograde direction from the portal vein to the hepatic vein or in the retrograde direction from the hepatic vein to the portal vein. Arterial how was linearly dependent on arterial pressure between 70 cm H2O and 120 cm H2O at a constant portal or hepatovenous pressure of 18 cm H2O. An arterial pressure of 100 cm H2O was required for the maintenance of a homogeneous orthograde perfusion of the whole parenchyma and of a physiologic ratio of arterial to portal how of about 1:3. Glucagon was infused either through the artery or the portal vein and hepatic vein, respectively, to a submaximally effective ''calculated'' sinusoidal concentration after mixing of 0.1 nmol/L. During orthograde perfusions, arterial and portal glucagon caused the same increases in glucose output. Yet during retrograde perfusions, hepatovenous glucagon elicited metabolic alterations equal to those in orthograde perfusions, whereas arterial glucagon effected changes strongly reduced to between 10% and 50%. Arterially infused trypan blue was distributed homogeneously in the parenchyma during orthograde perfusions, whereas it reached clearly smaller areas of parenchyma during retrograde perfusions. Finally, arterially applied acridine orange was taken up by all periportal hepatocytes in the proximal half of the acinus during orthograde perfusions but only by a much smaller portion of periportal cells in the proximal third of the acinus during retrograde perfusions. These findings suggest that in rat liver, the hepatic artery and the portal vein mix before and within the first third of the sinusoids, rather than in the middle or even last third. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 067 KW - Hepatic artery KW - Portal vein KW - Confluence KW - Rat KW - Animal KW - Experimental study KW - Anatomy KW - Biochemical analysis KW - Technique KW - Perfusion KW - Exploration Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16702 ER - TY - GEN A1 - Elsenbeer, Helmut A1 - West, Adam A1 - Bonell, Mike T1 - Hydrologic pathways and stormflow hydrochemistry at South Creek, northeast Queensland N2 - Earlier investigations at South Creek in northeastern Queensland established the importance of overland flow as a hydrologic pathway in this tropical rainforest environment. Since this pathway is ‘fast’, transmitting presumably ‘new’ water, its importance should be reflected in the stormflow chemistry of South Creek: the greater the volumentric contribution to the stormflow hydrograph, the more similarity between the chemical composition of streamwater and of overland flow is to be expected. Water samples were taken during two storm events in an ephemeral gully (gully A), an intermittent gully (gully B) and at the South Creek catchment outlet; additional spot checks were made in several poorly defined rills. The chemical composition of ‘old’ water was determined from 45 baseflow samples collected throughout February. The two events differed considerably in their magnitudes, intensities and antecedent moisture conditions. In both events, the stormflow chemistry in South Creek was characterized by a sharp decrease in Ca, Mg, Na, Si, Cl, EC, ANC, alkalinity and total inorganic carbon. pH remained nearly constant with discharge, whereas K increased sharply, as did sulfate in an ill-defined manner. In event 1, this South Creek stormflow pattern was closely matched by the pattern in gully A, implying a dominant contribution of ‘new’ water. This match was confirmed by the spot samples from rills. Gully B behaved like South Creek itself, but with a dampened ‘new’ water signal, indicating less overland flow generation in its subcatchment. In event 2, which occurred five days later, the initial ‘new’ water signal in gully A was rapidly overwhelmed by a different signal which is attributed to rapid drainage from a perched water table. This study shows that stormflow in this rainforest catchment consists predominantly of ‘new’ water which reaches the stream channel via ‘fast’ pathways. Where the ephemeral gullies delivering overland flow are incised deeply enough to intersect a perched water table, a delayed, ‘old’ water-like signal may be transmitted. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 046 Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16904 ER - TY - GEN A1 - Püschel, Gerhard Paul A1 - Hespeling, Ursula A1 - Oppermann, Martin A1 - Dieter, Peter T1 - Increase in prostanoid formation in rat liver macrophages (Kupffer cells) by human anaphylatoxin C3a N2 - Human anaphylatoxin C3a increases glycogenolysis in perfused rat liver. This action is inhibited by prostanoid synthesis inhibitors and prostanoid antagonists. Because prostanoids but not anaphylatoxin C3a can increase glycogenolysis in hepatocytes, it has been proposed that prostanoid formation in nonparenchymal cells represents an important step in the C3a-dependent increase in hepatic glycogenolysis. This study shows that (a) human anaphylatoxin C3a (0.1 to 10 mug/ml) dose-dependently increased prostaglandin D2, thromboxane B, and prostaglandin F2alpha formation in rat liver macrophages (Kupffer cells); (b) the C3a-mediated increase in prostanoid formation was maximal after 2 min and showed tachyphylaxis; and (c) the C3a-elicited prostanoid formation could be inhibited specifically by preincubation of C3a with carboxypeptidase B to remove the essential C-terminal arginine or by preincubation of C3a with Fab fragments of a neutralizing monoclonal antibody. These data support the hypothesis that the C3a-dependent activation of hepatic glycogenolysis is mediated by way of a C3a-induced prostanoid production in Kupffer cells. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 037 KW - lactate output KW - glucose KW - complement KW - flow KW - prostaglandin-f2-alpha Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16716 ER - TY - GEN A1 - Elsenbeer, Helmut A1 - Cassel, Keith A1 - Tinner, W. T1 - A daily rainfall erosivity model for Western Amazonia N2 - Rainfall erosivities as defined by the R factor from the universal soil loss equation were determined for all events during a two-year period at the station La Cuenca in western Amazonia. Three methods based on a power relationship between rainfall amount and erosivity were then applied to estimate event and daily rainfall erosivities from the respective rainfall amounts. A test of the resulting regression equations against an independent data set proved all three methods equally adequate in predicting rainfall erosivity from daily rainfall amount. We recommend the Richardson model for testing in the Amazon Basin, and its use with the coefficient from La Cuenca in western Amazonia. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 050 KW - MESOSCALE CONVECTIVE COMPLEXES KW - KINETIC-ENERGY KW - UNITED-STATES KW - EROSION Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16962 ER - TY - GEN A1 - Elsenbeer, Helmut A1 - Cassel, Keith A1 - Castro, Jorge T1 - Spatial analysis of soil hydraulic conductivity in a tropical rain forest catchment N2 - The topography of first-order catchments in a region of western Amazonia was found to exhibit distinctive, recurrent features: a steep, straight lower side slope, a flat or nearly flat terrace at an intermediate elevation between valley floor and interfluve, and an upper side slope connecting interfluve and intermediate terrace. A detailed survey of soil-saturated hydraulic conductivity (K sat)-depth relationships, involving 740 undisturbed soil cores, was conducted in a 0.75-ha first-order catchment. The sampling approach was stratified with respect to the above slope units. Exploratory data analysis suggested fourth-root transformation of batches from the 0–0.1 m depth interval, log transformation of batches from the subsequent 0.1 m depth increments, and the use of robust estimators of location and scale. The K sat of the steep lower side slope decreased from 46 to 0.1 mm/h over the overall sampling depth of 0.4 m. The corresponding decrease was from 46 to 0.1 mm/h on the intermediate terrace, from 335 to 0.01 mm/h on the upper side slope, and from 550 to 0.015 mm/h on the interfluve. A depthwise comparison of these slope units led to the formulation of several hypotheses concerning the link between K sat and topography. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 051 Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16979 ER - TY - GEN A1 - Peter, Martin G. A1 - Andersen, Svend Olav A1 - Hartmann, Rudolf A1 - Miessner, Merle A1 - Roepstorff, Peter T1 - Catecholamine-protein conjugates : isolation of 4-phenylphenoxazin-2-ones from oxidative coupling of N-acetyldopamine with alipathic amino acids N2 - 4-Phenylphenoxazinones were isolated after biomimetic oxidation, using diphenoloxidases of insect cuticle, mushroom tyrosinase, or after autoxidation of N-acetyldopamine (Image ) in the presence of β-alanine, β-alanine methyl ester or N-acetyl-L-lysine. They are formed presumably by addition of 2-aminoalkyl-5-alkylphenols to the o-quinone of biphenyltetrol which, in turn, arises from oxidative coupling of. The structures of present the first examples for the assembly of reasonably stable intermediates in the rather complex process of chemical modifications of aliphatic amino acid residues by o-quinones. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 062 Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17571 ER - TY - GEN A1 - Peter, Martin G. A1 - Boldt, Peter C. A1 - Niederstein, Yvonne A1 - Peter-Katalinić, Jasna T1 - Synthesen von Galactose-Cluster-haltigen Steroid-Derivaten N2 - The synthesis of galactose clusters that are linked to a steroid moiety by a peptide-like spacer unit is described. The galactose cluster is obtained by Koenigs-Knorr glycosylation of TRIS-Gly-Fmoc (2b) under Helferich conditions. Peptide and ester bonds are formed after activation of carboxylic acids as diphenylthiophene dioxide (TDO) esters. 6a is synthesized in a convergent way by coupling of (Ac4Gal)3-TRIS-Gly (3e) with cholesteryl TDO succinate (5b). Coupling of (Ac4Gal)3-TRIS-Gly hydrogen succinate (3f) with Gly-O-Chol (5d) by means of EEDQ yields 6d. Reaction of (Ac4Gal)3-TRIS-Gly-SUCC-O-TDO (3g) with 25-hydroxycholesterol leads in a linear sequence to the oxysterol derivative 6f. Selective cleavage of the acetyl groups from galactose units yields the known compound 6b and the new derivatives 6e and 6g. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 042 KW - Glycoconjugates KW - Galactosides KW - Steroid esters KW - Amphiphiles KW - Glycopeptides Y1 - 1990 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16783 ER - TY - GEN A1 - Püschel, Gerhard Paul A1 - Oppermann, Martin A1 - Muschol, Waldemar A1 - Götze, Otto A1 - Jungermann, Kurt T1 - Increase of glucose and lactate output and decrease of flow by human anaphylatoxin C3a but not C5a in perfused rat liver N2 - The complement fragments C3a and C5a were purified from zymosan-activated human serum by column chromatographic procedures after the bulk of the proteins had been removed by acidic polyethylene glycol precipitation. In the isolated in situ perfused rat liver C3a increased glucose and lactate output and reduced flow. Its effects were enhanced in the presence of the carboxypeptidase inhibitor DL-mercaptomethyl-3-guanidinoethylthio-propanoic acid (MERGETPA) and abolished by preincubation of the anaphylatoxin with carboxypeptidase B or with Fab fragments of an anti-C3a monoclonal antibody. The C3a effects were partially inhibited by the thromboxane antagonist BM13505. C5a had no effect. It is concluded that locally but not systemically produced C3a may play an important role in the regulation of local metabolism and hemodynamics during inflammatory processes in the liver. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 039 KW - Hepatic glucose balance KW - Hepatic lactate balance KW - Hepatic hemodynamics KW - Complement system KW - Anaphylatoxin Y1 - 1989 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16733 ER - TY - GEN A1 - Laschewsky, André A1 - Ringsdorf, H. T1 - Polymerization of amphiphilic dienes in Langmuir-Blodgett multilayers N2 - Amphiphilic derivatives of octadiene and docosadiene were investigated in monolayers and Langmuir-Blodgett multilayers, with respect to their self-organization and their polymerization behavior. All amphiphiles investigated form monolayers. However, only acid and alcohol derivatives were able to build up multilayers. Those multilayers are rapidly photopolymerized in the layers via a two-step process: Irradiation with long-wavelength UV light yields soluble polymers, whereas additional irradiation with sfiort-wavelength UV light produces insoluble and presumably cross-linked polymers. The reaction meclianism is discussed according to the polymer characterization by UV spectroscopy, small-angle X-ray scattering, NMR spectroscopy, and gel permeation chromatography. All multilayers undergo structural changes during the polymerization; substantial changes result in defects in the polymerized layers as observed by scanning electron microscopy. In contrast to the acids and alcohols, the deposition of monolayers of the aldehyde derivatives did not yield well-ordered multilayers, but rather amorphous films. In this different film structure, the photopolymerization process differs from the one observed in multilayers. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 058 Y1 - 1988 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17176 ER - TY - GEN A1 - Püschel, Gerhard Paul A1 - Nath, Annegret A1 - Jungermann, Kurt T1 - Increase of urate formation by stimulation of sympathetic hepatic nerves, circulating noradrenaline and glucagon inthe perfused rat liver N2 - In the isolated rat liver perfused in situ stimulation of the nerve bundles around the portal vein and the hepatic artery caused an increase of urate formation that was inhibited by the α1-blocker prazosine and the xanthine oxidase inhibitor allopurinol. Moreover, nerve stimulation increased glucose and lactate output and decreased perfusion flow. Infusion of noradrenaline had similar effects. Compared to nerve stimulation infusion of glucagon led to a less pronounced increase of urate formation and a twice as large increase in glucose output but a decrease in lactate release without affecting the flow rate. Insulin had no effect on any of the parameters studied. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 038 KW - Urate KW - Allantoin KW - Hepatic nerve KW - Catecholamine KW - Glucagon Y1 - 1987 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16728 ER - TY - GEN A1 - Werner, John S. A1 - Donnelly, Seaneen K. A1 - Kliegl, Reinhold T1 - Aging and human macular pigment density : appended with translations from the work of Max Schultze and Ewald Hering N2 - The optical density of human macular pigment was measured for 50 observers ranging in age from 10 to 90 years. The psychophysical method required adjusting the radiance of a 1°, monochromatic light (400–550 nm) to minimize flicker (15 Hz) when presented in counterphase with a 460 nm standard. This test stimulus was presented superimposed on a broad-band, short-wave background. Macular pigment density was determined by comparing sensitivity under these conditions for the fovea, where macular pigment is maximal, and 5° temporally. This difference spectrum, measured for 12 observers, matched Wyszecki and Stiles's standard density spectrum for macular pigment. To study variation in macular pigment density for a larger group of observers, measurements were made at only selected spectral points (460, 500 and 550 nm). The mean optical density at 460 nm for the complete sample of 50 subjects was 0.39. Substantial individual differences in density were found (ca. 0.10–0.80), but this variation was not systematically related to age. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - paper 037 KW - Macular pigment KW - Color vision Aging Y1 - 1987 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16836 ER - TY - GEN A1 - Koch, Horst A1 - Laschewsky, André A1 - Ringsdorf, Helmut A1 - Teng, Kang T1 - Photodimerization and photopolymerization of amphiphilic cinnamic acid derivatives in oriented monolayers, vesicles and solution N2 - Cinnamic acid moieties were incorporated into amphiphilic compounds containing one and two alkyl chains. These lipid-like compounds with photoreactive units undergo self-organization to form monolayers at the gas-water interface and bilayer structures (vesicles) in aqueous solutions. The photoreaction of the cinnamic acid moiety induced by 254 nm UV light was investigated in the crystalline state, in monolayers, in vesicles and in solution in organic solvents. The single-chain amphiphiles undergo dimerization to yield photoproducts with twice the molecular weight of the corresponding monomers in organized systems. The photoreaction of amphiphiles containing two cinnamic acid groups occurs via two mechanisms: The intramolecular dimerization produces bicycles, with retention of the molecular weight of the corresponding monomer. The intermolecular reaction leads to oligomeric and polymeric photoproducts. In contrast to the single-chain amphiphiles, photodimerization processes of lipoids containing two cinnamic acid moieties also occur in solution in organic solvents. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 078 Y1 - 1986 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17111 ER - TY - GEN A1 - Albrecht, O. A1 - Cumming, W. A1 - Kreuder, W. A1 - Laschewsky, André A1 - Ringsdorf, Helmut T1 - Monolayers of rod-shaped and disc-shaped liquid crystalline compounds at the air-water interface N2 - Calamitic (rod-shaped) and discotic (disc-shaped) thermotropic liquid crystalline (LC) compounds were spread at the air-water interface, and their ability to form monolayers was studied. The calamitic LCs investigated were found to form monolayers which behave analogously to conventional amphiphiles such as fatty acids. The spreading of the discotic LCs produced monolayers as well, but with a behaviour different from classical amphiphiles. The areas occupied per molecule are too small to allow the contact of all hydrophilic groups with the water surface and the packing of all hydrophobic chains. Various molecular arrangements of the discotics at the water surface to fit the spreading data are discussed. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 079 KW - Monolayers KW - liquid crystals KW - discotics Y1 - 1986 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17124 ER - TY - GEN A1 - Olson, Richard K. A1 - Davidson, Brian J. A1 - Kliegl, Reinhold A1 - Davies, Susan E. T1 - Development of phonetic memory in disabled and normal readers N2 - The development of phonetic codes in memory of 141 pairs of normal and disabled readers from 7.8 to 16.8 years of age was tested with a task adapted from L. S. Mark, D. Shankweiler, I. Y. Liberman, and C. A. Fowler (Memory & Cognition, 1977, 5, 623–629) that measured false-positive errors in recognition memory for foil words which rhymed with words in the memory list versus foil words that did not rhyme. Our younger subjects replicated Mark et al., showing a larger difference between rhyming and nonrhyming false-positive errors for the normal readers. The older disabled readers' phonetic effect was comparable to that of the younger normal readers, suggesting a developmental lag in their use of phonetic coding in memory. Surprisingly, the normal readers' phonetic effect declined with age in the recognition task, but they maintained a significant advantage across age in the auditory WISC-R digit span recall test, and a test of phonological nonword decoding. The normals' decline with age in rhyming confusion may be due to an increase in the precision of their phonetic codes. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - paper 039 Y1 - 1984 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16888 ER - TY - GEN A1 - Werner, John S. A1 - Cicerone, Carola M. A1 - Kliegl, Reinhold A1 - DellaRosa, Denise T1 - Spectral efficiency of blackness induction N2 - The spectral efficiency of blackness induction was measured in three normal trichromatic observers and in one deuteranomalous observer. The psychophysical task was to adjust the radiance of a monochromatic 60–120′ annulus until a 45′ central broadband field just turned black and its contour became indiscriminable from a dark surrounding gap that separated it from the annulus. The reciprocal of the radiance required to induce blackness with annulus wavelengths between 420 and 680 nm was used to define a spectral-efficiency function for the blackness component of the achromatic process. For each observer, the shape of this blackness-sensitivity function agreed with the spectral-efficiency function based on heterochromatic flicker photometry when measured with the same 60–120′ annulus. Both of these functions matched the Commission Internationale de l'Eclairage Vλ function except at short wavelengths. Ancillary measurements showed that the latter difference in sensitivity can be ascribed to nonuniformities of preretinal absorption, since the annular field excluded the central 60′ of the fovea. Thus our evidence indicates that, at least to a good first approximation, induced blackness is inversely related to the spectral-luminosity function. These findings are consistent with a model that separates the achromatic and the chromatic pathways. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - paper 040 Y1 - 1984 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16897 ER -