@misc{Zimmering2008, author = {Zimmering, Raina}, title = {Revolution in der Demokratie? : Neue soziale Bewegungen in Lateinamerika}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-23339}, year = {2008}, abstract = {Seit den 1980er Jahren nehmen die neuen sozialen Bewegungen in Lateinamerika an Bedeutung rapide zu. Nachhaltige Transformationsprozesse auszul{\"o}sen steht dabei seit den 1990er Jahren - in Zeiten neoliberaler Globalisierung und steigender Armut - im Zentrum gesellschaftlichen Handelns. Doch, angesichts der bestehenden globalen Strukturen, wie groß ist das Potenzial der neuen Welle sozialer Kr{\"a}fte wirklich?}, language = {de} } @misc{ZeheBloeschl2004, author = {Zehe, Erwin and Bl{\"o}schl, G{\"u}nter}, title = {Predictability of hydrologic response at the plot and catchment scales: Role of initial conditions}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-60119}, year = {2004}, abstract = {This paper examines the effect of uncertain initial soil moisture on hydrologic response at the plot scale (1 m2) and the catchment scale (3.6 km2) in the presence of threshold transitions between matrix and preferential flow. We adopt the concepts of microstates and macrostates from statistical mechanics. The microstates are the detailed patterns of initial soil moisture that are inherently unknown, while the macrostates are specified by the statistical distributions of initial soil moisture that can be derived from the measurements typically available in field experiments. We use a physically based model and ensure that it closely represents the processes in the Weiherbach catchment, Germany. We then use the model to generate hydrologic response to hypothetical irrigation events and rainfall events for multiple realizations of initial soil moisture microstates that are all consistent with the same macrostate. As the measures of uncertainty at the plot scale we use the coefficient of variation and the scaled range of simulated vertical bromide transport distances between realizations. At the catchment scale we use similar statistics derived from simulated flood peak discharges. The simulations indicate that at both scales the predictability depends on the average initial soil moisture state and is at a minimum around the soil moisture value where the transition from matrix to macropore flow occurs. The predictability increases with rainfall intensity. The predictability increases with scale with maximum absolute errors of 90 and 32\% at the plot scale and the catchment scale, respectively. It is argued that even if we assume perfect knowledge on the processes, the level of detail with which one can measure the initial conditions along with the nonlinearity of the system will set limits to the repeatability of experiments and limits to the predictability of models at the plot and catchment scales.}, language = {de} } @misc{Zaborowski1999, author = {Zaborowski, Marcin}, title = {Polens Westgrenze : zwischen rationaler Politik und historischer Erinnerung}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-11466}, year = {1999}, abstract = {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.}, language = {de} } @misc{YeZhangWarbyetal.2022, author = {Ye, Fangyuan and Zhang, Shuo and Warby, Jonathan and Wu, Jiawei and Gutierrez-Partida, Emilio and Lang, Felix and Shah, Sahil and Saglamkaya, Elifnaz and Sun, Bowen and Zu, Fengshuo and Shoaee, Safa and Wang, Haifeng and Stiller, Burkhard and Neher, Dieter and Zhu, Wei-Hong and Stolterfoht, Martin and Wu, Yongzhen}, title = {Overcoming C₆₀-induced interfacial recombination in inverted perovskite solar cells by electron-transporting carborane}, series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1317}, issn = {1866-8372}, doi = {10.25932/publishup-58770}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-587705}, pages = {12}, year = {2022}, abstract = {Inverted perovskite solar cells still suffer from significant non-radiative recombination losses at the perovskite surface and across the perovskite/C₆₀ interface, limiting the future development of perovskite-based single- and multi-junction photovoltaics. Therefore, more effective inter- or transport layers are urgently required. To tackle these recombination losses, we introduce ortho-carborane as an interlayer material that has a spherical molecular structure and a three-dimensional aromaticity. Based on a variety of experimental techniques, we show that ortho-carborane decorated with phenylamino groups effectively passivates the perovskite surface and essentially eliminates the non-radiative recombination loss across the perovskite/C₆₀ interface with high thermal stability. We further demonstrate the potential of carborane as an electron transport material, facilitating electron extraction while blocking holes from the interface. The resulting inverted perovskite solar cells deliver a power conversion efficiency of over 23\% with a low non-radiative voltage loss of 110 mV, and retain >97\% of the initial efficiency after 400 h of maximum power point tracking. Overall, the designed carborane based interlayer simultaneously enables passivation, electron-transport and hole-blocking and paves the way toward more efficient and stable perovskite solar cells.}, language = {en} } @misc{WolffPowęska1996, author = {Wolff-Powęska, Anna}, title = {Deutsche, Russen und Polen : Paradigmen der gegenseitigen Wahrnehmung}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-11158}, year = {1996}, abstract = {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.}, language = {de} } @misc{Woderich1997, author = {Woderich, Rudolf}, title = {Gelebte und inszenierte Identit{\"a}ten in Ostdeutschland}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-11288}, year = {1997}, abstract = {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.}, language = {de} } @misc{Winkler1995, author = {Winkler, Rainer}, title = {Deutschlands geopolitische Lage im sich wandelnden Europa}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-11067}, year = {1995}, abstract = {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 € (erm{\"a}ßigt: 25,00 €)}, language = {de} } @misc{WillemynsVanheckeVandenbussche2005, author = {Willemyns, Roland and Vanhecke, Eline and Vandenbussche, Wim}, title = {Politische Loyalit{\"a}t und Sprachwahl : eine Fallstudie aus dem Flandern des fr{\"u}hen 19. Jahrhunderts}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-10014}, year = {2005}, language = {de} } @misc{Wilga2006, author = {Wilga, Beata}, title = {Aus Warschauer Perspektive}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-23125}, year = {2006}, abstract = {Inhalt: Reparationen versus Entsch{\"a}digungen Die Leistungen der rot-gr{\"u}nen Koalition Ein neues Kapitel?}, language = {de} } @misc{WernerDonnellyKliegl1987, author = {Werner, John S. and Donnelly, Seaneen K. and Kliegl, Reinhold}, title = {Aging and human macular pigment density : appended with translations from the work of Max Schultze and Ewald Hering}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-16836}, year = {1987}, abstract = {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.}, language = {en} } @misc{WernerCiceroneKliegletal.1984, author = {Werner, John S. and Cicerone, Carola M. and Kliegl, Reinhold and DellaRosa, Denise}, title = {Spectral efficiency of blackness induction}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-16897}, year = {1984}, abstract = {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.}, language = {en} } @misc{Weissberg2005, author = {Weissberg, Liliane}, title = {Die Unschuld des Namens und die ungeheure Unordnung der Welt}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-10008}, year = {2005}, language = {de} } @misc{WatanabePueschelGardemannetal.1994, author = {Watanabe, Yuji and P{\"u}schel, Gerhard Paul and Gardemann, Andreas and Jungermann, Kurt}, title = {Presinusoidal and proximal intrasinusoidal confluence of hepatic artery and portal vein in rat liver : functional evidence by orthograde and retrograde bivascular perfusion}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-16702}, year = {1994}, abstract = {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.}, language = {en} } @misc{Wallraf1995, author = {Wallraf, Wolfram}, title = {Does Theory Matter? : Zur Leistungsf{\"a}higkeit integrationstheoretischer Ans{\"a}tze bei der Untersuchung asiatisch-pazifischer Realit{\"a}t}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-11073}, year = {1995}, abstract = {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.}, language = {de} } @misc{Wallerstein2003, author = {Wallerstein, Immanuel}, title = {Wohin steuert die Welt? : Geopolitische Br{\"u}che im 21. Jahrhundert}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-9612}, year = {2003}, abstract = {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.}, language = {de} } @misc{WackervonElert2001, author = {Wacker, Alexander and von Elert, Eric}, title = {Polyunsaturated fatty acids : evidence for non-substitutable biochemical resources in Daphnia galeata}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17587}, year = {2001}, abstract = {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.}, language = {en} } @misc{WackervonElert2002, author = {Wacker, Alexander and von Elert, Eric}, title = {Strong influences of larval diet history on subsequent post-settlement growth in the freshwater mollusc Dreissena polymorpha}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17627}, year = {2002}, abstract = {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.}, language = {en} } @misc{vonBraunmuehl2007, author = {von Braunm{\"u}hl, Claudia}, title = {Partizipation in der Wasserversorgung}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-23247}, year = {2007}, abstract = {Einerseits f{\"u}hrt in Entwicklungsl{\"a}ndern die Privatisierung von Wasserbetrieben zu Kostensenkungen. Andererseits ver{\"a}ndert sie bisherige M{\"o}glichkeiten der Teilnahme. Diese wiederspruchsvollen Entwicklungen diskutiert die Autorin an Beispielen aus S{\"u}damerika und S{\"u}dafrika. K{\"u}nftige Privatisierungen im Bereich Wasser sollten dauerhafte Formen der Mitwirkung erm{\"o}glichen.}, language = {de} } @misc{Vasilache2006, author = {Vasilache, Andreas}, title = {Hobbes, der Terrorismus und die Angst in der Weltpolitik}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-9828}, year = {2006}, abstract = {In den theoretischen Grundlagen moderner Verfassungsstaaten wird Angst als zentrale politische Gr{\"o}ße ausgewiesen. In der Hobbesschen Ursprungsmythologie moderner Staatlichkeit spielt sie eine entscheidende Rolle f{\"u}r die Staatskonstituierung. Aufgrund ihrer Staatszentriertheit bietet die Vertragstheorie allerdings kein hinreichendes Erkl{\"a}rungspotential f{\"u}r die transnationale terroristische Strategie der Angst. Der Angstpolitik des Terrorismus steht aber auch eine Nutzbarmachung der Angst durch Regierungen bedrohter Staaten gegen{\"u}ber.}, language = {de} } @misc{VandenBergheMaddens2003, author = {Vanden Berghe, Kristine and Maddens, Bart}, title = {Mexiko: (De-)Konstruktion von Nation und Ethnie im Diskurs der Guerilla}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-8016}, year = {2003}, abstract = {This article investigates the fictional narratives written by „Sub-commandante Marcos" of the Zapatista movement EZLN. It is shown that Marcos uses three distinct frames of reference in his fictional account of the Zapatista guerrilla: an ethnic, a national and a post-national one. Contrary to other studies that emphasize the harmony between the three levels, it can be argued that there exists a fundamental tension between them. There is a tension between the ethnic discourse and the Mexican nationalist discourse which envisions a nation rather than a nation dominated by a single ethno-cultural group. Finally, it can be deduced from these tensions that the EZLN guerrilla is subject to divergent pressures.}, language = {de} }