Refine
Year of publication
Document Type
- Postprint (3296) (remove)
Language
- English (2347)
- German (927)
- Multiple languages (11)
- French (9)
- Portuguese (1)
- Slovak (1)
Keywords
- Germany (62)
- Deutschland (45)
- Außenpolitik (35)
- European Union (35)
- USA (34)
- Europäische Union (31)
- Europe (25)
- climate change (23)
- model (22)
- diffusion (21)
Institute
- Mathematisch-Naturwissenschaftliche Fakultät (481)
- WeltTrends e.V. Potsdam (322)
- Institut für Biochemie und Biologie (287)
- Institut für Chemie (236)
- Humanwissenschaftliche Fakultät (223)
- Extern (205)
- Department Psychologie (194)
- Strukturbereich Kognitionswissenschaften (163)
- Institut für Geowissenschaften (139)
- Institut für Physik und Astronomie (137)
- Department Erziehungswissenschaft (136)
- Institut für Ernährungswissenschaft (106)
- Wirtschaftswissenschaften (103)
- Department Sport- und Gesundheitswissenschaften (85)
- Institut für Umweltwissenschaften und Geographie (68)
- Institut für Germanistik (65)
- Department Linguistik (51)
- Department für Inklusionspädagogik (48)
- Wirtschafts- und Sozialwissenschaftliche Fakultät (46)
- Institut für Religionswissenschaft (41)
- Institut für Mathematik (32)
- Philosophische Fakultät (31)
- Sozialwissenschaften (29)
- Fachgruppe Betriebswirtschaftslehre (28)
- Institut für Anglistik und Amerikanistik (26)
- Strukturbereich Bildungswissenschaften (26)
- Hasso-Plattner-Institut für Digital Engineering GmbH (22)
- Fakultät für Gesundheitswissenschaften (15)
- Historisches Institut (15)
- Institut für Philosophie (12)
- Institut für Informatik und Computational Science (10)
- Universitätsbibliothek (10)
- Institut für Romanistik (8)
- Zentrum für Lehrerbildung und Bildungsforschung (ZeLB) (8)
- Fachgruppe Politik- & Verwaltungswissenschaft (7)
- Klassische Philologie (5)
- Institut für Künste und Medien (4)
- Potsdam Research Institute for Multilingualism (PRIM) (4)
- Bürgerliches Recht (3)
- Fachgruppe Soziologie (3)
- Fachgruppe Volkswirtschaftslehre (3)
- Hochschulambulanz (3)
- Institut für Slavistik (3)
- MenschenRechtsZentrum (3)
- Öffentliches Recht (3)
- Akademie für Psychotherapie und Interventionsforschung GmbH (2)
- Department Grundschulpädagogik (2)
- Department Musik und Kunst (2)
- Gleichstellungsbeauftragte (2)
- Hasso-Plattner-Institut für Digital Engineering gGmbH (2)
- Institut für Jüdische Studien und Religionswissenschaft (2)
- Kanonistisches Institut e.V. (2)
- Kommunalwissenschaftliches Institut (2)
- Digital Engineering Fakultät (1)
- Institut für Jüdische Theologie (1)
- Institut für Lebensgestaltung-Ethik-Religionskunde (1)
- Interdisziplinäres Zentrum für Dynamik komplexer Systeme (1)
- Juristische Fakultät (1)
- Language Acquisition (1)
- Multilingualism (1)
- Patholinguistics/Neurocognition of Language (1)
- Theodor-Fontane-Archiv (1)
- Zentrum für Sprachen und Schlüsselkompetenzen (Zessko) (1)
Das Drama des 17. Jahrhunderts steht nicht in einem ästhetischen, sondern als Argument in einem sozialen, politischen oder, in der Sprache der Zeit, moralphilosophischen Kontext. Ein erster Teil des Aufsatzes zeigt, dass die Poetik in der aristotelischen Schulphilosophie als Teil der Logik, das heißt der Argumentationstheorie im weitesten Sinne galt, und die Dichtung selbst somit als Anwendung einer argumentativen Form. Ein zweiter Teil zeigt an drei Beispielen, dass diese logische, argumentationstheoretische Auffassung des Dramas auch den Poetiken der Zeit zugrunde liegt. Ein dritter Teil führt an einigen Dramen (u.a. Gryphius’ „Catharina von Georgien“, Masens „Androphilus“ und Birkens „Silvia“) kurz vor, in welcher Form sie als Argument zu verstehen sind. Der vierte Teil zeigt, dass die Auffassung des Dramas als Argument ihren sozialhistorischen Kontext im Schultheater hat. Ein letzter Teil widmet sich der Frage, was nach Überzeugung der Frühen Neuzeit die Eigentümlichkeit des Dramas ausmacht, wenn es sich als Argument nicht von anderen Argumentationsformen unterscheidet.
Der Beitrag zeigt in einem ersten Schritt, dass die "Absurda comica" ein theologisches Gleichnis darstellt, in dem der König die Rolle Gottes, Pickelhäring die Rolle des Teufels und die Handwerker die Rolle des Menschen übernehmen. Schlüssel für dieses Gleichnis ist Lk 9.60 und Mt 8.22, wo Christus von seinen Jüngern fordert, "die Toten ihre Toten begraben zu lassen", d.h. sich vom Reich der Welt abzuwenden. Auf die "Absurda comica" übertragen, besagt dies, dass die Handwerker die Rollenhaftigkeit und die Narrheit ihrer Existenz erkennen müssen, wenn sie vor Gott gerechtfertigt werden wollen. In einem zweiten Schritt wird gezeigt, dass die "Absurda comica" als ein solches Gleichnis in der Tradition der Fastnachtspiele steht, deren Funktion eben dieser Aufweis der menschlichen Narrheit war. Das protestantische Schuldrama trat dabei bewusst in die Tradition dieser Fastnachtspiele, wie sich gerade an der "Absurda comica" zeigen lässt. In einem dritten Schritt wird diese These in einem Vergleich mit Jacob Masens "Rusticus imperans" und Christian Weises "Tobias und die Schwalbe" bestätigt.
Der Beitrag rekonstruiert erstens den humanistischen Begriff der Dichtung bei Melanchthon. Dichtung erscheint hier als Medium zur Vermittlung insbesondere moralpädagogischer Inhalte, das sich vor allem durch seine Versform von anderen sprachlichen Vermittlungsformen unterscheidet. Dieser Dichtungsbegriff wird zweitens mit dem neuplatonischen Begriff der Dichtung als Ergebnis einer göttlichen Inspiration (Enthusiasmus) konfrontiert, wie ihn Marsilio Ficino entwickelt hat. In Deutschland haben insbesondere Konrad Celtis und seine Schüler diesen Dichtungsbegriff vertreten, besonders prominent etwas Matthäus Lupinus Calidomius und Jacob Locher. In einem dritten Schritt zeigt der Beitrag, dass dieser Dichtungsbegriff aus theologischen Gründen im Protestantismus nicht mehr zu vertreten war: das reformatorische Postulat des sola scriptura verbot jede Berufung auf eine göttliche Inspiration außerhalb der Bibel.
Gegen die gängige Vorstellung von der ‚kreativen Phantasie‘ als dem schöpferischen Vermögen des Dichters argumentiert der Aufsatz, dass erst mit der Frühromantik die Phantasie zum kreativen Vermögen erklärt wird, davor jedoch die Vernunft als kreatives Vermögen galt. In der Fakultätenpsychologie des Mittelalters und der Frühen Neuzeit wurde die imaginatio als ein rein passives Vorstellungsvermögen der Vernunft nicht entgegengestellt, sondern ihr übergeordnet, indem sich die Vernunft der Phantasie als bildgebendem Verfahren bediente. Während das Ergebnis der Phantasie seit der Frühromantik als ästhetisches ‚Werk‘ im emphatischen Sinne gilt, war das Ergebnis der dichtenden Vernunft ein Argument im logischen Sinne, das Prozess der inventio gefunden worden war. Erst Anfang des 18. Jahrhunderts entwickelt sich dann der Begriff der ‚kreativen Phantasie‘ aus dem rhetorischen Konzept der Anschaulichkeit (evidentia).
Der Aufsatz zeigt, dass es sich bei der averroischen Bearbeitung der aristotelischen ‚Poetik‘ um eine in sich konsistente Theorie der Dichtung handelt, die allerdings mit der aristotelischen Konzeption der Dichtung nur wenig zu tun hat. Ausgehend von der Übersetzung von ‚Tragödie‘ und ‚Komödie‘ mit ‚Lob‘ und ‚Tadel‘ entwickelt Averroes einen Begriff von Dichtung als moralphilosophisches Argument zum Lob der Tugend und zum Tadel des Lasters. Im Mittelpunkt steht die Interpretation des aristotelischen Begriffs der mimesis als similitudo, das heißt als Gleichnis. Als gleichnishaftes Argument ist Dichtung nur graduell von anderen argumentativen Formen wie der demonstrativen Logik und der Rhetorik unterschieden.
imaginatio oder inventio
(2005)
Der Aufsatz analysiert die Begriffe der imaginatio und inventio und deren Verhältnis zueinander in den Poetiken von George Puttenham („Arte of English Poesie“, 1589), Philip Sidney („Defense of Poetry“, 1595) und William Temple („Analysis tractationis de poesi“, um 1595). Anders als zu erwarten wird in allen drei Fällen das dichterische Vermögen nicht im Sinne eines modernen Begriffs von kreativer Phantasie gedeutet. Weil der Begriff der imaginatio eine gefährliche Nähe zu den Wahnvorstellungen eines Verrückten impliziert, es Puttenham und Sidney aber vor allem um eine soziale Aufwertung der Dichtung als einer höfisch angemessenen Tätigkeit geht, wird der Begriff der imaginatio nur in einem sehr eingeschränkten Sinne verwendet. Das impliziert auch eine Ablehnung des Begriffs eines Enthusiasmus oder furor poeticus, also einer göttlichen Inspiration des Dichters, wie er insbesondere mit dem Neuplatonismus Ficinos assoziiert wurde.
Die „Poetica“ Tommaso Campanellas ist Ausdruck einer starken Rationalisierung und didaktischer Instrumentalisierung der Dichtung. Diese Rationalisierung kann als Reaktion auf die Inspirationstheorien von Marsilio Ficino und Pietro Pomponazzi erklärt werden, die beide (mit je ganz unterschiedlichen Begründungen) den poetischen Enthusiasmus neben die Offenbarungen des Propheten gestellt und damit den ausschließlichen Offenbarungsanspruch der Prophetie herausgefordert hatten.
Der Aufsatz umreißt die Wirkung von Averroes’ Bearbeitung der aristotelischen ‚Poetik‘ als argumentativer Disziplin. Beginnend mit Al-Farabi und Al-Gazali im zehnten Jahrhundert wird die ‚Poetik‘ den logischen Disziplinen des ‚Organon‘ zugerechnet. Während die Theorie eines ‚poetischen Syllogismus‘ nicht rezipiert worden ist, wurde der argumentative Status der Dichtung vom zwölften Jahrhundert an auch im lateinischen Westen bekannt. Mit unterschiedlichen Begründungen übernahmen Dominicus Gundissalinus, Vincenz von Beauvais, Albertus Magnus, Roger Bacon und Thomas von Aquin die Klassifizierung der Poetik als argumentative Disziplin. Am Ende des Aufsatzes steht ein Ausblick auf Coluccio Salutatis ‚De laboribus Herculis‘ und die humanistische Rezeption dieser Tradition.
Die These des Aufsatzes lautet, dass es sich bei Sebastian Brants „Narrenschiff“ um einen Text handelt, der entsprechend der Prinzipien verstanden werden kann, die Rudolf Agricola für das Sammeln von Argumenten formuliert hat. Das Gründungsdokument dieser humanistischen Methode, die unter dem Begriff der „loci communes“ Geschichte gemacht hat, ist ein Brief Agricolas aus dem Jahr 1484. Ein erster Teil des Aufsatzes stellt Agricolas Argumentationstheorie dar, ein zweiter Teil zeigt, dass Brants „Narrenschiff“ als Ergebnis dieser Argumentationstheorie verstanden werden kann.
'Gelegenheitsdichtung'
(2010)
This review analyzes the potential role and long-term effects of field perennial polycultures (mixtures) in agricultural systems, with the aim of reducing the trade-offs between provisioning and regulating ecosystem services. First, crop rotations are identified as a suitable tool for the assessment of the long-term effects of perennial polycultures on ecosystem services, which are not visible at the single-crop level. Second, the ability of perennial polycultures to support ecosystem services when used in crop rotations is quantified through eight agricultural ecosystem services. Legume-grass mixtures and wildflower mixtures are used as examples of perennial polycultures, and compared with silage maize as a typical crop for biomass production. Perennial polycultures enhance soil fertility, soil protection, climate regulation, pollination, pest and weed control, and landscape aesthetics compared with maize. They also score lower for biomass production compared with maize, which confirms the trade-off between provisioning and regulating ecosystem services. However, the additional positive factors provided by perennial polycultures, such as reduced costs for mineral fertilizer, pesticides, and soil tillage, and a significant preceding crop effect that increases the yields of subsequent crops, should be taken into account. However, a full assessment of agricultural ecosystem services requires a more holistic analysis that is beyond the capabilities of current frameworks.
Quantifying uncertainty, variability and likelihood for ordinary differential equation models
(2010)
Background
In many applications, ordinary differential equation (ODE) models are subject to uncertainty or variability in initial conditions and parameters. Both, uncertainty and variability can be quantified in terms of a probability density function on the state and parameter space.
Results
The partial differential equation that describes the evolution of this probability density function has a form that is particularly amenable to application of the well-known method of characteristics. The value of the density at some point in time is directly accessible by the solution of the original ODE extended by a single extra dimension (for the value of the density). This leads to simple methods for studying uncertainty, variability and likelihood, with significant advantages over more traditional Monte Carlo and related approaches especially when studying regions with low probability.
Conclusions
While such approaches based on the method of characteristics are common practice in other disciplines, their advantages for the study of biological systems have so far remained unrecognized. Several examples illustrate performance and accuracy of the approach and its limitations.
Vor achtzig Jahren
(2020)
Die Locarno-Verträge haben in der völkerrechtlichen Literatur der 1920er und 1930er Jahre viel Aufmerksamkeit erfahren. Auch die zeitgenössische Publizistik beschäftigte sich ausführlich mit diesem Thema, wobei das Verhältnis von Verständigung mit den Nachbarn und Revision der Grenzregelungen im Mittelpunkt der Debatte stand.
Später gehörte Locarno zur Geschichte der Zwischenkriegszeit und wurde im Rahmen der Völkerbundsgeschichte, der Völkerrechts- und Diplomatiegeschichte und der Geschichte der Weimarer Republik behandelt. Für die politikwissenschaftliche Literatur spielte Locarno fast ausschließlich auf dem Gebiet der Sicherheits- und Abrüstungspolitik eine Rolle; eine (system)theoretische Erörterung steht bislang aus.
In diesem Beitrag sollen nach einem kurzen Überblick über das Vertragswerk zunächst die geschichtliche Ausgangslage knapp umrissen und Vorgeschichte und Ergebnis der Konferenz von Locarno skizziert werden. Anschließend werden Inhalte und Lösungsansätze des Vertragswerkes beleuchtet, bevor zum Schluß eine kurze Einordnung in das System des Völkerbundes erfolgt.
Heute wird selbstverständlich von einer aktiven Zivilgesellschaft als relevanter Akteurin des politischen Prozesses ausgegangen. Dies gilt für den innerstaatlichen Rahmen ebenso wie für die völkerrechtliche Ebene. Das Engagement zivilgesellschaftlicher Akteure im verfassungsrechtlich eingehegten Rahmen des politischen Prozesses ist mit Fragen verbunden, denen sich dieser Aufsatz nähern wird. Zunächst wird der Begriff der Zivilgesellschaft hergeleitet (I) und danach wird auf die Funktionen der Öffentlichkeit in einem rechtsstaatlich verfaßten republikanischen Gemeinwesen eingegangen (II), bevor zum Schluß aktuelle Themen, die sich in den letzten Jahren entwickelt haben, vorgestellt und als erste Forschungsfragen formuliert werden (III).
Extreme habitats often harbor specific communities that differ substantially from non-extreme habitats. In many cases, these communities are characterized by archaea, bacteria and protists, whereas the number of species of metazoa and higher plants is relatively low. In extremely acidic habitats, mostly prokaryotes and protists thrive, and only very few metazoa thrive, for example, rotifers. Since many studies have investigated the physiology and ecology of individual species, there is still a gap in research on direct, trophic interactions among extremophiles. To fill this gap, we experimentally studied the trophic interactions between a predatory protist (Actinophrys sol, Heliozoa) and its prey, the rotifers Elosa woralli and Cephalodella sp., the ciliate Urosomoida sp. and the mixotrophic protist Chlamydomonas acidophila (a green phytoflagellate, Chlorophyta). We found substantial predation pressure on all animal prey. High densities of Chlamydomonas acidophila reduced the predation impact on the rotifers by interfering with the feeding behaviour of A. sol. These trophic relations represent a natural case of intraguild predation, with Chlamydomonas acidophila being the common prey and the rotifers/ciliate and A. sol being the intraguild prey and predator, respectively. We further studied this intraguild predation along a resource gradient using Cephalodella sp. as the intraguild prey. The interactions among the three species led to an increase in relative rotifer abundance with increasing resource (Chlamydomonas) densities. By applying a series of laboratory experiments, we revealed the complexity of trophic interactions within a natural extremophilic community.
Trait-based approaches to investigate (short- and long-term) phytoplankton dynamics and community assembly have become increasingly popular in freshwater and marine science. Although the nature of the pelagic habitat and the main phytoplankton taxa and ecology are relatively similar in both marine and freshwater systems, the lines of research have evolved, at least in part, separately. We compare and contrast the approaches adopted in marine and freshwater ecosystems with respect to phytoplankton functional traits. We note differences in study goals relating to functional trait use that assess community assembly and those that relate to ecosystem processes and biogeochemical cycling that affect the type of characteristics assigned as traits to phytoplankton taxa. Specific phytoplankton traits relevant for ecological function are examined in relation to
herbivory, amplitude of environmental change and spatial and temporal scales of study. Major differences are identified, including the shorter time scale for regular environmental change in freshwater ecosystems compared to that in the open oceans as well as the
type of sampling done by researchers based on site-accessibility. Overall, we encourage researchers to better motivate why they apply trait-based analyses to their studies and to make use of process-driven approaches, which are more common in marine studies. We further propose fully comparative trait studies conducted along the habitat gradient spanning freshwater to brackish to marine systems, or along geographic gradients. Such studies will benefit from the combined strength of both fields.
Wandel durch Annäherung : weil unsere Zukunft in Europa liegt, bleibt Deutschland eine zivile Macht
(2004)
All you can feed
(2020)
The laboratory mouse is the most common used mammalian research model in biomedical research. Usually these animals are maintained in germ-free, gnotobiotic, or specific-pathogen-free facilities. In these facilities, skilled staff takes care of the animals and scientists usually don’t pay much attention about the formulation and quality of diets the animals receive during normal breeding and keeping. However, mice have specific nutritional requirements that must be met to guarantee their potential to grow, reproduce and to respond to pathogens or diverse environmental stress situations evoked by handling and experimental interventions. Nowadays, mouse diets for research purposes are commercially manufactured in an industrial process, in which the safety of food products is addressed through the analysis and control of all biological and chemical materials used for the different diet formulations. Similar to human food, mouse diets must be prepared under good sanitary conditions and truthfully labeled to provide information of all ingredients. This is mandatory to guarantee reproducibility of animal studies. In this review, we summarize some information on mice research diets and general aspects of mouse nutrition including nutrient requirements of mice, leading manufacturers of diets, origin of nutrient compounds, and processing of feedstuffs for mice including dietary coloring, autoclaving and irradiation. Furthermore, we provide some critical views on the potential pitfalls that might result from faulty comparisons of grain-based diets with purified diets in the research data production resulting from confounding nutritional factors.
Resilience trinity
(2020)
Ensuring ecosystem resilience is an intuitive approach to safeguard the functioning of ecosystems and hence the future provisioning of ecosystem services (ES). However, resilience is a multi-faceted concept that is difficult to operationalize. Focusing on resilience mechanisms, such as diversity, network architectures or adaptive capacity, has recently been suggested as means to operationalize resilience. Still, the focus on mechanisms is not specific enough. We suggest a conceptual framework, resilience trinity, to facilitate management based on resilience mechanisms in three distinctive decision contexts and time-horizons: 1) reactive, when there is an imminent threat to ES resilience and a high pressure to act, 2) adjustive, when the threat is known in general but there is still time to adapt management and 3) provident, when time horizons are very long and the nature of the threats is uncertain, leading to a low willingness to act. Resilience has different interpretations and implications at these different time horizons, which also prevail in different disciplines. Social ecology, ecology and engineering are often implicitly focussing on provident, adjustive or reactive resilience, respectively, but these different notions of resilience and their corresponding social, ecological and economic tradeoffs need to be reconciled. Otherwise, we keep risking unintended consequences of reactive actions, or shying away from provident action because of uncertainties that cannot be reduced. The suggested trinity of time horizons and their decision contexts could help ensuring that longer-term management actions are not missed while urgent threats to ES are given priority.
Die Konsequenzen des Grollens in der arabischen Welt seit Anfang 2011 werden sich möglicherweise als weniger hilfreich für die Lösung des Nahostkonflikts erweisen als erhofft. Zumindest auf kurze Sicht hat sich die Nachbarschaft Israels in einen noch unberechenbareren und instabileren Ort verwandelt. Israel würde die Entstehung guten und repräsentativen Regierens in der arabischen Welt willkommen heißen. Doch sind die weiteren Entwicklungen in der Region kaum abzuschätzen.
The way in which predominantly Muslim states deal with modernity is strongly influenced by the characteristics of Islamic Law. The Sharia reflects in the most obvious way the lack of separation between secular and religious issues inherent in Islamic doctrine. The article analyses the evolution of law in the Muslim world and illustrates its continuous oscillation between the obligation to stick to the God-given rules and the need to adapt to changes of living conditions.
Die EU ist überdehnt. Drei verschiedene, koexistierende Europavisionen erklären den derzeitigen Strategiemangel: Das pragmatische Europa ist nicht transparent, das grenzenlose Europa fördert Ängste unkontrollierbarer Veränderungen, und das Identitäs- Europa befindet sich in einer Sinnkrise. Antwort bieten mehrere Strategien: Ein Transfer einzelner Elemente der europäischen Verfassung in einen Europavertrag; Orientierung an einem differenzierten Europa und Bildung von Koalitionen, um Europa zu führen.
Schwarz-Rot vertritt wie keine andere deutsche Regierung vor ihr selbstbewusst deutsche und europäische Interessen, ohne dieses Selbstbewusstsein bemüht zur Schau zu stellen. Deutschland hat in den vergangenen Jahren ganz selbstverständlich die Rolle des Antreibers europäischer Politik für sich reklamiert. Jedoch erwiesen sich Merkel und Steinmeier dabei mehr als realistische Pragmatiker denn als Visionäre.
Afghanistan und die Region
(2014)
Der Afghanistankonflikt hat seit 2001 deutliche Auswirkungen auf das regionale Umfeld – in Pakistan, Kaschmir, Xinjiang und den zentralasiatischen Republiken. Dies wird sich nach dem Abzug der ISAF-Truppen noch verstärken. Dabei geht es sowohl um die grenzüberschreitenden Folgen der beiden Militärinterventionen als auch um die Wirkungen der innerafghanischen Konflikte auf die gesamte Region. Diese Problematik besitzt ein erhebliches Konfliktpotenzial, das größere Aufmerksamkeit verdient.
The advantages of remote sensing using Unmanned Aerial Vehicles (UAVs) are a high spatial resolution of images, temporal flexibility and narrow-band spectral data from different wavelengths domains. This enables the detection of spatio-temporal dynamics of environmental variables, like plant-related carbon dynamics in agricultural landscapes. In this paper, we quantify spatial patterns of fresh phytomass and related carbon (C) export using imagery captured by a 12-band multispectral camera mounted on the fixed wing UAV Carolo P360. The study was performed in 2014 at the experimental area CarboZALF-D in NE Germany. From radiometrically corrected and calibrated images of lucerne (Medicago sativa), the performance of four commonly used vegetation indices (VIs) was tested using band combinations of six near-infrared bands. The highest correlation between ground-based measurements of fresh phytomass of lucerne and VIs was obtained for the Enhanced Vegetation Index (EVI) using near-infrared band b(899). The resulting map was transformed into dry phytomass and finally upscaled to total C export by harvest. The observed spatial variability at field- and plot-scale could be attributed to small-scale soil heterogeneity in part.
rezensierte Werke: Bachmann, Cordula: Kleidung und Geschlecht : Ethnographische Erkundungen einer Alltagspraxis / Cordula Bachmann. - Bielefeld : transcript Verlag, 2008. - 154 S. ISBN 978-3-89942-920-6 Pape, Cora von: Kunstkleider : die Präsenz des Körpers in textilen Kunst-Objekten des 20. Jahrhunderts / Cora von Pape. - Bielefeld : transcript Verlag, 2008. - 225 S. ISBN 978-3-89942-825-4 Zwei neue Studien widmen sich dem Verhältnis von Kleidung und Geschlecht beziehungsweise Kleidung und Körper. Wie Frauen und Männer in ihrer alltäglichen Praxis des ‚Sich-Kleidens‘ mit den modischen Erscheinungsbildern von Männlichkeit oder Weiblichkeit umgehen, untersucht die Kulturwissenschaftlerin Cordula Bachmann. Sie wertet aktuelle Interviews zum Kleidungsverhalten von Frauen und Männern aus und rückt dabei die Perspektive der Handelnden, die das alltägliche ‚Sich-Kleiden‘ als eine primäre soziale Anforderung zu lösen haben, ins Zentrum des Interesses. Den aufsehenerregenden künstlerischen Umgang mit Kleidung in Form von textilen Kunstobjekten, die sich mit dem menschlichen Körper befassen und der Art und Weise, wie er mittels Kleidung und Textilien repräsentiert oder transformiert wird, untersucht die Kunsthistorikerin Cora von Pape. Das alltägliche weibliche Chaos des Sich-Ankleidens angesichts der täglichen Herausforderung, sich bei der Entscheidung für oder gegen ein Kleid, sich auch für oder gegen eine Frauenrolle entscheiden zu müssen, das in den von Bachmann ausgewerteten Interviews thematisiert wird, scheint auch in den Performances oder textilen Kunstobjekten vieler von Cordula von Pape vorgestellten Künstlerinnen der 2. Hälfte des 20. Jahrhunderts auf, allerdings künstlerisch-experimentell bearbeitet in eindrucksvollen (Selbst-)Inszenierungen, die der gewaltigen Symbolik des Sich-Ankleidens, der Kleider als Körperhüllen oder Reliquien, die an die Stelle des verschwundenen Körpers treten, auf den Grund gehen.
The organisation of legislative chambers and the consequences of parliamentary procedures have been among the most prominent research questions in legislative studies. Even though democratic elections not only lead to the formation of a government but also result in an opposition, the literature has mostly neglected oppositions and their role in legislative chambers. This paper proposes to fill this gap by looking at the legislative organisation from the perspective of opposition players. The paper focuses on the potential influence of opposition players in the policy-making process and presents data on more than 50 legislative chambers. The paper shows considerable variance of the formal power granted to opposition players. Furthermore, the degree of institutionalisation of opposition rights is connected to electoral systems and not necessarily correlated with other institutional characteristics such as regime type or the size of legislative chambers.
Symptoms of anxiety and depression in young athletes using the Hospital Anxiety and Depression Scale
(2018)
Elite young athletes have to cope with multiple psychological demands such as training volume, mental and physical fatigue, spatial separation of family and friends or time management problems may lead to reduced mental and physical recovery. While normative data regarding symptoms of anxiety and depression for the general population is available (Hinz and Brahler, 2011), hardly any information exists for adolescents in general and young athletes in particular. Therefore, the aim of this study was to assess overall symptoms of anxiety and depression in young athletes as well as possible sex differences. The survey was carried out within the scope of the study "Resistance Training in Young Athletes" (KINGS-Study). Between August 2015 and September 2016, 326 young athletes aged (mean +/- SD) 14.3 +/- 1.6 years completed the Hospital Anxiety and Depression Scale (HAD Scale). Regarding the analysis of age on the anxiety and depression subscales, age groups were classified as follows: late childhood (12-14 years) and late adolescence (15-18 years). The participating young athletes were recruited from Olympic weight lifting, handball, judo, track and field athletics, boxing, soccer, gymnastics, ice speed skating, volleyball, and rowing. Anxiety and depression scores were (mean +/- SD) 4.3 +/- 3.0 and 2.8 +/- 2.9, respectively. In the subscale anxiety, 22 cases (6.7%) showed subclinical scores and 11 cases (3.4%) showed clinical relevant score values. When analyzing the depression subscale, 31 cases (9.5%) showed subclinical score values and 12 cases (3.7%) showed clinically important values. No significant differences were found between male and female athletes (p >= 0.05). No statistically significant differences in the HADS scores were found between male athletes of late childhood and late adolescents (p >= 0.05). To the best of our knowledge, this is the first report describing questionnaire based indicators of symptoms of anxiety and depression in young athletes. Our data implies the need for sports medical as well as sports psychiatric support for young athletes. In addition, our results demonstrated that the chronological classification concerning age did not influence HAD Scale outcomes. Future research should focus on sports medical and sports psychiatric interventional approaches with the goal to prevent anxiety and depression as well as teaching coping strategies to young athletes.
The development of new and better optimization and approximation methods for Job Shop Scheduling Problems (JSP) uses simulations to compare their performance. The test data required for this has an uncertain influence on the simulation results, because the feasable search space can be changed drastically by small variations of the initial problem model. Methods could benefit from this to varying degrees. This speaks in favor of defining standardized and reusable test data for JSP problem classes, which in turn requires a systematic describability of the test data in order to be able to compile problem adequate data sets. This article looks at the test data used for comparing methods by literature review. It also shows how and why the differences in test data have to be taken into account. From this, corresponding challenges are derived which the management of test data must face in the context of JSP research.
Keywords
Regular consumption of fruits and vegetables, which is related to high plasma levels of lipid-soluble micro-nutrients such as carotenoids and tocopherols, is linked to lower incidences of various age-related diseases. Differences in lipid-soluble micronutrient blood concentrations seem to be associated with age. Our retrospective analysis included men and women aged 22-37 and 60-85 years from the Berlin Aging Study II. Participants with simultaneously available plasma samples and dietary data were included (n = 1973). Differences between young and old groups were found for plasma lycopene, alpha-carotene, alpha-tocopherol, beta-cryptoxanthin (only in women), and gamma-tocopherol (only in men). beta-Carotene, retinol and lutein/zeaxanthin did not differ between young and old participants regardless of the sex. We found significant associations for lycopene, alpha-carotene (both inverse), alpha-tocopherol, gamma-tocopherol, and beta-carotene (all positive) with age. Adjusting for BMI, smoking status, season, cholesterol and dietary intake confirmed these associations, except for beta-carotene. These micronutrients are important antioxidants and associated with lower incidence of age-related diseases, therefore it is important to understand the underlying mechanisms in order to implement dietary strategies for the prevention of age-related diseases. To explain the lower lycopene and alpha-carotene concentration in older subjects, bioavailability studies in older participants are necessary.
In nature as well as in the context of infection and medical applications, bacteria often have to move in highly complex environments such as soil or tissues. Previous studies have shown that bacteria strongly interact with their surroundings and are often guided by confinements. Here, we investigate theoretically how the dispersal of swimming bacteria can be augmented by microfluidic environments and validate our theoretical predictions experimentally. We consider a system of bacteria performing the prototypical run-and-tumble motion inside a labyrinth with square lattice geometry. Narrow channels between the square obstacles limit the possibility of bacteria to reorient during tumbling events to an area where channels cross. Thus, by varying the geometry of the lattice it might be possible to control the dispersal of cells. We present a theoretical model quantifying diffusive spreading of a run-and-tumble random walker in a square lattice. Numerical simulations validate our theoretical predictions for the dependence of the diffusion coefficient on the lattice geometry. We show that bacteria moving in square labyrinths exhibit enhanced dispersal as compared to unconfined cells. Importantly, confinement significantly extends the duration of the phase with strongly non-Gaussian diffusion, when the geometry of channels is imprinted in the density profiles of spreading cells. Finally, in good agreement with our theoretical findings, we observe the predicted behaviors in experiments with E. coli bacteria swimming in a square lattice labyrinth created in amicrofluidic device. Altogether, our comprehensive understanding of bacterial dispersal in a simple two-dimensional labyrinth makes the first step toward the analysis of more complex geometries relevant for real world applications.
Early acquisition of a second language influences the development of language abilities and cognitive functions. In the present study, we used functional Magnetic Resonance Imaging (fMRI) to investigate the impact of early bilingualism on the organization of the cortical language network during sentence production. Two groups of adult multilinguals, proficient in three languages, were tested on a narrative task; early multilinguals acquired the second language before the age of three years, late multilinguals after the age of nine. All participants learned a third language after nine years of age. Comparison of the two groups revealed substantial differences in language-related brain activity for early as well as late acquired languages. Most importantly, early multilinguals preferentially activated a fronto-striatal network in the left hemisphere, whereas the left posterior superior temporal gyrus (pSTG) was activated to a lesser degree than in late multilinguals. The same brain regions were highlighted in previous studies when a non-target language had to be controlled. Hence the engagement of language control in adult early multilinguals appears to be influenced by the specific learning and acquisition conditions during early childhood. Remarkably, our results reveal that the functional control of early and subsequently later acquired languages is similarly affected, suggesting that language experience has a pervasive influence into adulthood. As such, our findings extend the current understanding of control functions in multilinguals.
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.
Research on weight-loss interventions in emerging adulthood is warranted. Therefore, a cognitive-behavioral group treatment (CBT), including development-specific topics for adolescents and young adults with obesity (YOUTH), was developed. In a controlled study, we compared the efficacy of this age-specific CBT group intervention to an age-unspecific CBT group delivered across ages in an inpatient setting. The primary outcome was body mass index standard deviation score (BMI-SDS) over the course of one year; secondary outcomes were health-related and disease-specific quality of life (QoL). 266 participants aged 16 to 21 years (65% females) were randomized. Intention-to-treat (ITT) and per-protocol analyses (PPA) were performed. For both group interventions, we observed significant and clinically relevant improvements in BMI-SDS and QoL over the course of time with small to large effect sizes. Contrary to our hypothesis, the age-specific intervention was not superior to the age-unspecific CBT-approach.
Background
Eating in absence of hunger is quite common and often associated with an increased energy intake co-existent with a poorer food choice. Intuitive eating (IE), i.e., eating in accordance with internal hunger and satiety cues, may protect from overeating. IE, however, requires accurate perception and processing of one’s own bodily signals, also referred to as interoceptive sensitivity. Training interoceptive sensitivity might therefore be an effective method to promote IE and prevent overeating. As most studies on eating behavior are conducted in younger adults and close social relationships influence health-related behavior, this study focuses on middle-aged and older couples.
Methods
The present pilot randomized intervention study aims at investigating the feasibility and effectiveness of a 21-day mindfulness-based training program designed to increase interoceptive sensitivity. A total of N = 60 couples participating in the NutriAct Family Study, aged 50–80 years, will be recruited. This randomized-controlled intervention study comprises three measurement points (pre-intervention, post-intervention, 4-week follow-up) and a 21-day training that consists of daily mindfulness-based guided audio exercises (e.g., body scan). A three-arm intervention study design is applied to compare two intervention groups (training together as a couple vs. training alone) with a control group (no training). Each measurement point includes the assessment of self-reported and objective indicators of interoceptive sensitivity (primary outcome), self-reported indicators of intuitive and maladaptive eating (secondary outcomes), and additional variables. A training evaluation applying focus group discussions will be conducted to assess participants’ overall acceptance of the training and its feasibility.
Discussion
By investigating the feasibility and effectiveness of a mindfulness-based training program to increase interoceptive sensitivity, the present study will contribute to a deeper understanding of how to promote healthy eating in older age.
Background
Relatively little is known about protective factors and the emergence and maintenance of positive outcomes in the field of adolescents with chronic conditions. Therefore, the primary aim of the study is to acquire a deeper understanding of the dynamic process of resilience factors, coping strategies and psychosocial adjustment of adolescents living with chronic conditions.
Methods/design
We plan to consecutively recruit N = 450 adolescents (12–21 years) from three German patient registries for chronic conditions (type 1 diabetes, cystic fibrosis, or juvenile idiopathic arthritis). Based on screening for anxiety and depression, adolescents are assigned to two parallel groups – “inconspicuous” (PHQ-9 and GAD-7 < 7) vs. “conspicuous” (PHQ-9 or GAD-7 ≥ 7) – participating in a prospective online survey at baseline and 12-month follow-up. At two time points (T1, T2), we assess (1) intra- and interpersonal resiliency factors, (2) coping strategies, and (3) health-related quality of life, well-being, satisfaction with life, anxiety and depression. Using a cross-lagged panel design, we will examine the bidirectional longitudinal relations between resiliency factors and coping strategies, psychological adaptation, and psychosocial adjustment. To monitor Covid-19 pandemic effects, participants are also invited to take part in an intermediate online survey.
Discussion
The study will provide a deeper understanding of adaptive, potentially modifiable processes and will therefore help to develop novel, tailored interventions supporting a positive adaptation in youths with a chronic condition. These strategies should not only support those at risk but also promote the maintenance of a successful adaptation.
Trial registration
German Clinical Trials Register (DRKS), no. DRKS00025125. Registered on May 17, 2021.
Loss to follow-up in a randomized controlled trial study for pediatric weight management (EPOC)
(2016)
Background
Attrition is a serious problem in intervention studies. The current study analyzed the attrition rate during follow-up in a randomized controlled pediatric weight management program (EPOC study) within a tertiary care setting.
Methods
Five hundred twenty-three parents and their 7–13-year-old children with obesity participated in the randomized controlled intervention trial. Follow-up data were assessed 6 and 12 months after the end of treatment. Attrition was defined as providing no objective weight data. Demographic and psychological baseline characteristics were used to predict attrition at 6- and 12-month follow-up using multivariate logistic regression analyses.
Results
Objective weight data were available for 49.6 (67.0) % of the children 6 (12) months after the end of treatment. Completers and non-completers at the 6- and 12-month follow-up differed in the amount of weight loss during their inpatient stay, their initial BMI-SDS, educational level of the parents, and child’s quality of life and well-being. Additionally, completers supported their child more than non-completers, and at the 12-month follow-up, families with a more structured eating environment were less likely to drop out. On a multivariate level, only educational background and structure of the eating environment remained significant.
Conclusions
The minor differences between the completers and the non-completers suggest that our retention strategies were successful. Further research should focus on prevention of attrition in families with a lower educational background.
Background: There is an increasing awareness of the impact of parental risk perception on the weight course of the child and the parent's readiness to engage in preventive efforts, but only less is known about factors related to the parental perception of the right time for the implementation of preventive activities. The aim of this study was to examine parental perceptions of the appropriate time to engage in child weight management strategies, and the factors associated with different weight points at which mothers recognize the need for preventive actions.
Methods: 352 mothers with children aged 2-10 years took part in the study. We assessed mothers' perceptions of the actual and preferred weight status of their child, their ability to identify overweight and knowledge of its associated health risks, as well as perceptions of the right time for action to prevent overweight in their child. A regression analysis was conducted to examine whether demographic and weight related factors as well as the maternal general risk perception were associated with recognizing the need to implement prevention strategies.
Results: Although most of the parents considered a BMI in the 75th to 90th percentile a valid reason to engage in the prevention of overweight, 19% of the mothers were not willing to engage in prevention until their child reached the 97th percentile. Whereas the child's sex and the identification of an elevated BMI were significant predictors for parents' recognition of the 75th percentile as right point to engage in prevention efforts, an inability to recognize physical health risks associated with overweight silhouettes emerged as a significant factor predicting which parents would delay prevention efforts until a child's BMI reached the 97th percentile.
Conclusion: Parental misperceptions of overweight and associated health risks constitute unfavorable conditions for preventive actions. Feedback on the health risks associated with overweight could help increase maternal readiness for change.
Background
Body image distortion is highly prevalent among overweight individuals. Whilst there is evidence that body-dissatisfied women and those suffering from disordered eating show a negative attentional bias towards their own unattractive body parts and others’ attractive body parts, little is known about visual attention patterns in the area of obesity and with respect to males. Since eating disorders and obesity share common features in terms of distorted body image and body dissatisfaction, the aim of this study was to examine whether overweight men and women show a similar attentional bias.
Methods/Design
We analyzed eye movements in 30 overweight individuals (18 females) and 28 normalweight individuals (16 females) with respect to the participants’ own pictures as well as gender-
and BMI-matched control pictures (front and back view). Additionally, we assessed body image and disordered eating using validated questionnaires.
Discussion
The overweight sample rated their own body as less attractive and showed a more disturbed body image. Contrary to our assumptions, they focused significantly longer on attractive
compared to unattractive regions of both their own and the control body. For one’s own body, this was more pronounced for women. A higher weight status and more frequent body checking predicted attentional bias towards attractive body parts. We found that overweight adults exhibit an unexpected and stable pattern of selective attention, with a distinctive focus on their own attractive body regions despite higher levels of body dissatisfaction. This positive attentional bias may either be an indicator of a more pronounced pattern of attentional avoidance or a self-enhancing strategy. Further research is warranted to clarify these results.
Background: Functional abdominal pain (FAP) is not only a highly prevalent disease but also poses a considerable burden on children and their families. Untreated, FAP is highly persistent until adulthood, also leading to an increased risk of psychiatric disorders. Intervention studies underscore the efficacy of cognitive behavioral treatment approaches but are limited in terms of sample size, long-term follow-up data, controls and inclusion of psychosocial outcome data.
Methods/Design: In a multicenter randomized controlled trial, 112 children aged 7 to 12 years who fulfill the Rome III criteria for FAP will be allocated to an established cognitive behavioral training program for children with FAP (n = 56) or to an active control group (focusing on age-appropriate information delivery; n = 56). Randomization occurs centrally, blockwise and is stratified by center. This study is performed in five pediatric gastroenterology outpatient departments. Observer-blind assessments of outcome variables take place four times: pre-, post-, 3- and 12-months post-treatment. Primary outcome is the course of pain intensity and frequency. Secondary endpoints are health-related quality of life, pain-related coping and cognitions, as well as selfefficacy.
Discussion: This confirmatory randomized controlled clinical trial evaluates the efficacy of a cognitive behavioral intervention for children with FAP. By applying an active control group, time and attention processes can be controlled, and long-term follow-up data over the course of one year can be explored.
Background: Obesity is not only a highly prevalent disease but also poses a considerable burden on children and their families. Evidence is increasing that a lack of self-regulation skills may play a role in the etiology and maintenance of obesity. Our goal with this currently ongoing trial is to examine whether training that focuses on the enhancement of self-regulation skills may increase the sustainability of a complex lifestyle intervention.
Methods/Design: In a multicenter, prospective, parallel group, randomized controlled superiority trial, 226 obese children and adolescents aged 8 to 16 years will be allocated either to a newly developed computer-training program to improve their self-regulation abilities or to a placebo control group. Randomization occurs centrally and blockwise at a 1:1 allocation ratio for each center. This study is performed in pediatric inpatient rehabilitation facilities specialized in the treatment of obesity. Observer-blind assessments of outcome variables take place at four times: at the beginning of the rehabilitation (pre), at the end of the training in the rehabilitation (post), and 6 and 12 months post-rehabilitation intervention. The primary outcome is the course of BMI-SDS over 1 year after the end of the inpatient rehabilitation. Secondary endpoints are the self-regulation skills. In addition, health-related quality of life, and snack intake will be analyzed.
Discussion: The computer-based training programs might be a feasible and attractive tool to increase the sustainability of the weight loss reached during inpatient rehabilitation.
The article presents first results of a pilot study on the syntactic changes in Polish as a language contact in Germany. On the base of the experimental data tests the study examines the syntactic changes in Polish of two diaspora-generations: the so called forgetters and the incomplete learners. The article focuses on the questions: how the situation of languages in contact influences the syntactic changes in the heritage language (Polish) and which status have those syntactic transferences. Other linguistic and sociolinguistic factors, capable to cause the language change in the situation of language contact, are also discussed in the article.
Mitochondria are critical for hypothalamic function and regulators of metabolism. Hypothalamic mitochondrial dysfunction with decreased mitochondrial chaperone expression is present in type 2 diabetes (T2D). Recently, we demonstrated that a dysregulated mitochondrial stress response (MSR) with reduced chaperone expression in the hypothalamus is an early event in obesity development due to insufficient insulin signaling. Although insulin activates this response and improves metabolism, the metabolic impact of one of its members, the mitochondrial chaperone heat shock protein 10 (Hsp10), is unknown. Thus, we hypothesized that a reduction of Hsp10 in hypothalamic neurons will impair mitochondrial function and impact brain insulin action. Therefore, we investigated the role of chaperone Hsp10 by introducing a lentiviral-mediated Hsp10 knockdown (KD) in the hypothalamic cell line CLU-183 and in the arcuate nucleus (ARC) of C57BL/6N male mice. We analyzed mitochondrial function and insulin signaling utilizing qPCR, Western blot, XF96 Analyzer, immunohistochemistry, and microscopy techniques. We show that Hsp10 expression is reduced in T2D mice brains and regulated by leptin in vitro. Hsp10 KD in hypothalamic cells induced mitochondrial dysfunction with altered fatty acid metabolism and increased mitochondria-specific oxidative stress resulting in neuronal insulin resistance. Consequently, the reduction of Hsp10 in the ARC of C57BL/6N mice caused hypothalamic insulin resistance with acute liver insulin resistance.
Content: Synopsis The Attitudes toward Rape Victims Scale: Psychometric Data from 14 Countries Scale Construction and Validation - Study One: Preliminary Analyses - Study Two: Test-Retest Reliability - Study Three: Construct Validity Cross-cultural Extensions - United States - United Kingdom - Germany - New Zealand - Canada - West Indies - Israel - Turkey - India - Hong Kong - Malaysia - Zimbabwe - Mexico - Metric Equivalence Discussion
A method for the fabrication of well-defined metallic nanostructures is presented here in a simple and straightforward fashion. As an alternative to lithographic techniques, this routine employs microcontact printing utilizing wrinkled stamps, which are prepared from polydimethylsiloxane (PDMS), and includes the formation of hydrophobic stripe patterns on a substrate via the transfer of oligomeric PDMS. Subsequent backfilling of the interspaces between these stripes with a hydroxyl-functional poly(2-vinyl pyridine) then provides the basic pattern for the deposition of citrate-stabilized gold nanoparticles promoted by electrostatic interaction. The resulting metallic nanostripes can be further customized by peeling off particles in a second microcontact printing step, which employs poly(ethylene imine) surface-decorated wrinkled stamps, to form nanolattices. Due to the independent adjustability of the period dimensions of the wrinkled stamps and stamp orientation with respect to the substrate, particle arrays on the (sub)micro-scale with various kinds of geometries are accessible in a straightforward fashion. This work provides an alternative, cost-effective, and scalable surface-patterning technique to fabricate nanolattice structures applicable to multiple types of functional nanoparticles. Being a top-down method, this process could be readily implemented into, e.g., the fabrication of optical and sensing devices on a large scale.
Molecular paleoclimate reconstructions over the last 9 ka from a peat sequence in South China
(2016)
To achieve a better understanding of Holocene climate change in the monsoon regions of China, we investigated the molecular distributions and carbon and hydrogen isotope compositions delta C-13 and delta D values) of long-chain n-alkanes in a peat core from the Shiwangutian SWGT) peatland, south China over the last 9 ka. By comparisons with other climate records, we found that the delta C-13 values of the long-chain n-alkanes can be a proxy for humidity, while the dD values of the long-chain n-alkanes primarily recorded the moisture source dD signal during 9-1.8 ka BP and responded to the dry climate during 1.8-0.3 ka BP. Together with the average chain length ACL) and the carbon preference index CPI) data, the climate evolution over last 9 ka in the SWGT peatland can be divided into three stages. During the first stage 9-5 ka BP), the delta C-13 values were depleted and CPI and Paq values were low, while ACL values were high. They reveal a period of warm and wet climate, which is regarded as the Holocene optimum. The second stage 5-1.8 ka BP) witnessed a shift to relatively cool and dry climate, as indicated by the more positive delta C-13 values and lower ACL values. During the third stage 1.8-0.3 ka BP), the delta C-13, delta D, CPI and Paq values showed marked increase and ACL values varied greatly, implying an abrupt change to cold and dry conditions. This climate pattern corresponds to the broad decline in Asian monsoon intensity through the latter part of the Holocene. Our results do not support a later Holocene optimum in south China as suggested by previous studies.
The passive and active motion of micron-sized tracer particles in crowded liquids and inside living biological cells is ubiquitously characterised by 'viscoelastic' anomalous diffusion, in which the increments of the motion feature long-ranged negative and positive correlations. While viscoelastic anomalous diffusion is typically modelled by a Gaussian process with correlated increments, so-called fractional Gaussian noise, an increasing number of systems are reported, in which viscoelastic anomalous diffusion is paired with non-Gaussian displacement distributions. Following recent advances in Brownian yet non-Gaussian diffusion we here introduce and discuss several possible versions of random-diffusivity models with long-ranged correlations. While all these models show a crossover from non-Gaussian to Gaussian distributions beyond some correlation time, their mean squared displacements exhibit strikingly different behaviours: depending on the model crossovers from anomalous to normal diffusion are observed, as well as a priori unexpected dependencies of the effective diffusion coefficient on the correlation exponent. Our observations of the non-universality of random-diffusivity viscoelastic anomalous diffusion are important for the analysis of experiments and a better understanding of the physical origins of 'viscoelastic yet non-Gaussian' diffusion.
How do different reset protocols affect ergodicity of a diffusion process in single-particle-tracking experiments? We here address the problem of resetting of an arbitrary stochastic anomalous-diffusion process (ADP) from the general mathematical points of view and assess ergodicity of such reset ADPs for an arbitrary resetting protocol. The process of stochastic resetting describes the events of the instantaneous restart of a particle’s motion via randomly distributed returns to a preset initial position (or a set of those). The waiting times of such resetting events obey the Poissonian, Gamma, or more generic distributions with specified conditions regarding the existence of moments. Within these general approaches, we derive general analytical results and support them by computer simulations for the behavior of the reset mean-squared displacement (MSD), the new reset increment-MSD (iMSD), and the mean reset time-averaged MSD (TAMSD). For parental nonreset ADPs with the MSD(t)∝ tμ we find a generic behavior and a switch of the short-time growth of the reset iMSD and mean reset TAMSDs from ∝ _μ for subdiffusive to ∝ _1 for superdiffusive reset ADPs. The critical condition for a reset ADP that recovers its ergodicity is found to be more general than that for the nonequilibrium stationary state, where obviously the iMSD and the mean TAMSD are equal. The consideration of the new statistical quantifier, the iMSD—as compared to the standard MSD—restores the ergodicity of an arbitrary reset ADP in all situations when the μth moment of the waiting-time distribution of resetting events is finite. Potential applications of these new resetting results are, inter alia, in the area of biophysical and soft-matter systems.
Inorganic perovskites with cesium (Cs+) as the cation have great potential as photovoltaic materials if their phase purity and stability can be addressed. Herein, a series of inorganic perovskites is studied, and it is found that the power conversion efficiency of solar cells with compositions CsPbI1.8Br1.2, CsPbI2.0Br1.0, and CsPbI2.2Br0.8 exhibits a high dependence on the initial annealing step that is found to significantly affect the crystallization and texture behavior of the final perovskite film. At its optimized annealing temperature, CsPbI1.8Br1.2 exhibits a pure orthorhombic phase and only one crystal orientation of the (110) plane. Consequently, this allows for the best efficiency of up to 14.6% and the longest operational lifetime, T-S80, of approximate to 300 h, averaged of over six solar cells, during the maximum power point tracking measurement under continuous light illumination and nitrogen atmosphere. This work provides essential progress on the enhancement of photovoltaic performance and stability of CsPbI3 - xBrx perovskite solar cells.
Stress drop is a key factor in earthquake mechanics and engineering seismology. However, stress drop calculations based on fault slip can be significantly biased, particularly due to subjectively determined smoothing conditions in the traditional least-square slip inversion. In this study, we introduce a mechanically constrained Bayesian approach to simultaneously invert for fault slip and stress drop based on geodetic measurements. A Gaussian distribution for stress drop is implemented in the inversion as a prior. We have done several synthetic tests to evaluate the stability and reliability of the inversion approach, considering different fault discretization, fault geometries, utilized datasets, and variability of the slip direction, respectively. We finally apply the approach to the 2010 M8.8 Maule earthquake and invert for the coseismic slip and stress drop simultaneously. Two fault geometries from the literature are tested. Our results indicate that the derived slip models based on both fault geometries are similar, showing major slip north of the hypocenter and relatively weak slip in the south, as indicated in the slip models of other studies. The derived mean stress drop is 5-6 MPa, which is close to the stress drop of similar to 7 MPa that was independently determined according to force balance in this region Luttrell et al. (J Geophys Res, 2011). These findings indicate that stress drop values can be consistently extracted from geodetic data.
Background/Aims: Angiogenesis plays a key role during embryonic development. The vascular endothelin (ET) system is involved in the regulation of angiogenesis. Lipopolysaccharides (LPS) could induce angiogenesis. The effects of ET blockers on baseline and LPS-stimulated angiogenesis during embryonic development remain unknown so far. Methods: The blood vessel density (BVD) of chorioallantoic membranes (CAMs), which were treated with saline (control), LPS, and/or BQ123 and the ETB blocker BQ788, were quantified and analyzed using an IPP 6.0 image analysis program. Moreover, the expressions of ET-1, ET-2, ET3, ET receptor A (ETRA), ET receptor B (ETRB) and VEGFR2 mRNA during embryogenesis were analyzed by semi-quantitative RT-PCR. Results: All components of the ET system are detectable during chicken embryogenesis. LPS increased angiogenesis substantially. This process was completely blocked by the treatment of a combination of the ETA receptor blockers-BQ123 and the ETB receptor blocker BQ788. This effect was accompanied by a decrease in ETRA, ETRB, and VEGFR2 gene expression. However, the baseline angiogenesis was not affected by combined ETA/ETB receptor blockade. Conclusion: During chicken embryogenesis, the LPS-stimulated angiogenesis, but not baseline angiogenesis, is sensitive to combined ETA/ETB receptor blockade. (C) 2018 The Author(s) Published by S. Karger AG, Basel
High-latitude treeless ecosystems represent spatially highly heterogeneous landscapes with small net carbon fluxes and a short growing season. Reliable observations and process understanding are critical for projections of the carbon balance of the climate-sensitive tundra. Space-borne remote sensing is the only tool to obtain spatially continuous and temporally resolved information on vegetation greenness and activity in remote circumpolar areas. However, confounding effects from persistent clouds, low sun elevation angles, numerous lakes, widespread surface inundation, and the sparseness of the vegetation render it highly challenging. Here, we conduct an extensive analysis of the timing of peak vegetation productivity as shown by satellite observations of complementary indicators of plant greenness and photosynthesis. We choose to focus on productivity during the peak of the growing season, as it importantly affects the total annual carbon uptake. The suite of indicators are as follows: (1) MODIS-based vegetation indices (VIs) as proxies for the fraction of incident photosynthetically active radiation (PAR) that is absorbed (fPAR), (2) VIs combined with estimates of PAR as a proxy of the total absorbed radiation (APAR), (3) sun-induced chlorophyll fluorescence (SIF) serving as a proxy for photosynthesis, (4) vegetation optical depth (VOD), indicative of total water content and (5) empirically upscaled modelled gross primary productivity (GPP). Averaged over the pan-Arctic we find a clear order of the annual peak as APAR ≦ GPP<SIF<VIs/VOD. SIF as an indicator of photosynthesis is maximised around the time of highest annual temperatures. The modelled GPP peaks at a similar time to APAR. The time lag of the annual peak between APAR and instantaneous SIF fluxes indicates that the SIF data do contain information on light-use efficiency of tundra vegetation, but further detailed studies are necessary to verify this. Delayed peak greenness compared to peak photosynthesis is consistently found across years and land-cover classes. A particularly late peak of the normalised difference vegetation index (NDVI) in regions with very small seasonality in greenness and a high amount of lakes probably originates from artefacts. Given the very short growing season in circumpolar areas, the average time difference in maximum annual photosynthetic activity and greenness or growth of 3 to 25 days (depending on the data sets chosen) is important and needs to be considered when using satellite observations as drivers in vegetation models.
The authors analyze the reasons for the establishment of a regulatory regime for international financial markets in accordance with the ideas of liberal internationalism. They argue that the system of international markets is affected by polymorphy, indicating the existence of different forms of regulation. Five factors produce this polymorphy: the non-existence of a homogenous object of steering, the dynamic nature of these objects, the fact that the purpose of governance is not clearly defined, the dominance of governance by the USA and Great Britain, and governance as a result of a multi-level game with various coalitions.
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.
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.
This essay sets out to theorize the “new” Arctic Ocean as a pivot from
which our standard map of the world is currently being
reconceptualized. Drawing on theories from the fields of Atlantic
and Pacific studies, I argue that the changing Arctic, characterized
by melting ice and increased accessibility, must be understood
both as a space of transit that connects Atlantic and Pacific worlds
in unprecedented ways, and as an oceanic world and contact
zone in its own right. I examine both functions of the Arctic via a
reading of the dispute over the Northwest Passage (which
emphasizes the Arctic as a space of transit) and the contemporary
assessment of new models of sovereignty in the Arctic region
(which concentrates on the circumpolar Arctic as an oceanic
world). However, both of these debates frequently exclude
indigenous positions on the Arctic. By reading Canadian Inuit
theories on the Arctic alongside the more prominent debates, I
argue for a decolonizing reading of the Arctic inspired by Inuit
articulations of the “Inuit Sea.” In such a reading, Inuit conceptions
provide crucial interventions into theorizing the Arctic. They also,
in turn, contribute to discussions on indigeneity, sovereignty, and
archipelagic theory in Atlantic and Pacific studies.
In a recent paper, the Lefschetz number for endomorphisms (modulo trace class operators) of sequences of trace class curvature was introduced. We show that this is a well defined, canonical extension of the classical Lefschetz number and establish the homotopy invariance of this number. Moreover, we apply the results to show that the Lefschetz fixed point formula holds for geometric quasiendomorphisms of elliptic quasicomplexes.
In Meinungsumfragen äußern zwei Drittel der Polen ihre Angst vor einem Beitritt ihres Landes zur Eurozone. Die damit verbundenen Befürchtungen sind vielfältig und durch die europäische Wirtschaftskrise noch verstärkt worden. Allerdings hat sich Polen im EU-Beitrittsvertrag zur Mitgliedschaft in der Eurozone verpflichtet, sobald die entsprechenden Voraussetzungen vorliegen.
A thermodynamic study of the adsorption of Human Serum Albumin (HSA) onto spherical polyelectrolyte brushes (SPBs) by isothermal titration calorimetry (ITC) is presented. The SPBs are composed of a solid polystyrene core bearing long chains of poly(acrylic acid). ITC measurements done at different temperatures and ionic strengths lead to a full set of thermodynamicbinding constants together with the enthalpies and entropies of binding. The adsorption of HSA onto SPBs is described with a two-step model. The free energy of binding Delta Gb depends only weakly on temperature because of a marked compensation of enthalpy by entropy. Studies of the adsorbed HSA by Fourier transform infrared spectroscopy (FT-IR) demonstrate no significant disturbance in the secondary structure of the protein. The quantitative analysis demonstrates that counterion release is the major driving force for adsorption in a process where proteins become multivalent counterions of the polyelectrolyte chains upon adsorption. A comparison with the analysis of other sets of data related to the binding of HSA to polyelectrolytes demonstrates that the cancellation of enthalpy and entropy is a general phenomenon that always accompanies the binding of proteins to polyelectrolytes dominated by counterion release.
Background
Foot orthoses are usually assumed to be effective by optimizing mechanically dynamic rearfoot configuration. However, the effect from a foot orthosis on kinematics that has been demonstrated scientifically has only been marginal. The aim of this study was to examine the effect of different heights in medial arch-supported foot orthoses on rear foot motion during gait.
Methods
Nineteen asymptomatic runners (36±11years, 180±5cm, 79±10kg; 41±22km/week) participated in the study. Trials were recorded at 3.1 mph (5 km/h) on a treadmill. Athletes walked barefoot and with 4 different not customized medial arch-supported foot orthoses of various arch heights (N:0 mm, M:30 mm, H:35 mm, E:40mm). Six infrared cameras and the `Oxford Foot Model´ were used to capture motion. The average stride in each condition was calculated from 50 gait cycles per condition. Eversion excursion and internal tibia rotation were analyzed. Descriptive statistics included calculating the mean ± SD and 95% CIs. Group differences by condition were analyzed by one factor (foot orthoses) repeated measures ANOVA (α = 0.05).
Results
Eversion excursion revealed the lowest values for N and highest for H (B:4.6°±2.2°; 95% CI [3.1;6.2]/N:4.0°±1.7°; [2.9;5.2]/M:5.2°±2.6°; [3.6;6.8]/H:6.2°±3.3°; [4.0;8.5]/E:5.1°±3.5°; [2.8;7.5]) (p>0.05). Range of internal tibia rotation was lowest with orthosis H and highest with E (B:13.3°±3.2°; 95% CI [11.0;15.6]/N:14.5°±7.2°; [9.2;19.6]/M:13.8°±5.0°; [10.8;16.8]/H:12.3°±4.3°; [9.0;15.6]/E:14.9°±5.0°; [11.5;18.3]) (p>0.05). Differences between conditions were small and the intrasubject variation high.
Conclusion
Our results indicate that different arch support heights have no systematic effect on eversion excursion or the range of internal tibia rotation and therefore might not exert a crucial influence on rear foot alignment during gait.
Tolerierter Schmuggel
(2010)
Grenzen sind soziale Tatsachen, die sich räumlich manifestieren – etwa wenn Schmuggler und Grenzschützer an Grenzübergängen aufeinandertreffen und in ritualisierter Form Bedingungen und Möglichkeiten des Grenzübertritts aushandeln. Das Grenzgeschehen wird in diesem Beitrag in soziologisch-ethnologischer Perspektive am Beispiel des Kaliningrader Grenzgebiets betrachtet.
Restoration of semi-natural grassland communities
involves a combination of (1) sward disturbance to
create a temporal window for establishment, and (2)
target species introduction, the latter usually by seed
sowing. With great regularity, particular species
establish only poorly. More reliable establishment
could improve outcome of restoration projects and
increase cost-effectiveness. We investigated the
abiotic germination niche of ten poorly establishing
calcareous grassland species by simultaneously
exploring the effects of moisture and light availability
and temperature fluctuation on percentage germina-
tion and speed of germination. We also investigated
the effects of three different pre-treatments used to
enhance seed germination – cold-stratification, osmo-
tic priming and priming in combination with gibberellic
acid (GA 3 ) – and how these affected abiotic
germination niches. Species varied markedly in width
of abiotic germination niche, ranging from Carex flacca
with very strict abiotic requirements, to several species
reliably germinating across the whole range of abiotic
conditions. Our results suggest pronounced differ-
ences between species in gap requirements for
establishment. Germination was improved in most
species by at least one pre-treatment. Evidence for
positive effects of adding GA 3 to seed priming
solutions was limited. In several species, pre-treated
seeds germinated under a wider range of abiotic
conditions than untreated seeds. Improved knowledge
of species-specific germination niches and the effects
of seed pre-treatments may help to improve species
establishment by sowing, and to identify species for
which sowing at a later stage of restoration or
introduction as small plants may represent a more
viable strategy.
Im vorliegenden Beitrag werden ausgewählte Ergebnisse einer repräsentativen Untersuchung zur Position und Funktion des Arbeitsdirektors gemäß Mitbestimmungsgesetz von 1976 vorgestellt. Rund zehn Prozent aller Gesellschaften im Geltungsbereich des MitbestG 1976 sind öffentliche Unternehmungen — vorwiegend kommunale Verkehrsund Versorgungsunternehmen. Sie unterscheiden sich in vielerlei Hinsicht von privaten Firmen — nicht zuletzt auch in der Frage von Stellenwert und Ausgestaltung des Personalressorts in der Unternehmensleitung. Die Ausgestaltung der Personalfunktion in öffentlichen Unternehmen wird im folgenden mit dem Status des Personalressorts in der Privatwirtschaft verglichen.
Inhalt I. Das Mitbestimmungsgesetz von 1976 II . Der Aufsichtsrat als Aktionsfeld der Arbeitnehmer-Arbeitgeber-Beziehungen 1. Die Kompetenzstruktur des Aufsichtsrates nach dem MitbestG von 1976 2. Zur Bedeutung von Aufsichtsratsausschüssen im Kompetenzgefüge des Aufsichtsrates III. Die Akteure im Bereich der Unternehmungsverfassung 1. Arbeitnehmervertreter im Aufsichtsrat 2. Anteilseignervertreter im Aufsichtsrat 3. Personenbezogene Aspekte der Pattauflösung im Aufsichtsrat: Das Zweitstimmrechtund seine Bedeutung für die Arbeitsbeziehungen auf Unternehmensebene 4. Die Rolle der Vorstandsmitglieder im Aufsichtsrat
Management-Bildung
(1993)
Inhalt: 1. Management und Bildung: eine problematische Beziehung? 2. Institutionale Aspekte der Management-Bildung 3. Funktionale Aspekte der Management-Bildung 4. Ansatzpunkte zur Management-Bildung 4.1 Visionen der (strategischen) Untemehmensfiihrung 4.2 Symbolische Führung und Untemehmenskultur 4.3 Interkulturelles Management 4.4 Ökologie und Management 4.5 Der gesellschaftlich verantwortliche Manager 5. Management-Bildung und die "lernende Organisation" 6. Zusammenfassung
Vergütung mit Zukunft
(2005)
Im derzeit angespannten gesamtwirtschaftlichen Umfeld haben Unternehmen wenig Spielräume, über eine absolute Erhöhung der Vergütung Mitarbeiter zu werben, zu binden und zu motivieren. Gerade deshalb erhält die flexible und individuelle Gestaltung des Vergütungssystems für Fach- und Führungskräfte eine herausgehobene Bedeutung.
In diesem Beitrag werden einige motivationstheoretische Grundlagen erörtert, die bei der Entgeltfindling beachtet werden müssen. Dazu werden zuerst Aspekte der individuellen Attraktivität von Entgeltanreizen betrachtet. Anschließend wird die Frage beantwortet, unter welchen Bedingungen die Vergabe von attraktiven Leistungen auch zu einer höheren Arbeitsmotivation und damit zu einem besseren Leistungsverhalten der Mitarbeiter führt. Eine Übersicht über den Erklärungswert unterschiedlicher Motivationstheorien rundet die Darstellung ab.
Dieses Buch gibt einen Überblick über die Funktion der Sozialleistungen im betrieblichen Vergütungssystem. Es verdeutlicht, was bei der Vergabe der einzelnen Leistungsarten zu berücksichtigen ist, zeigt deren Vor- und Nachteile für Arbeitgeber und Arbeitnehmer auf und gibt Hinweise auf kostengünstige Zusatzleistungen, die im Vergleich zu teureren Lösungen höhere Wertschätzung genießen. Zahlreiche Beispiele aus der betrieblichen Praxis bieten dem Leser die Möglichkeit, Bewährtes in eigene Konzepte einzufügen sowie innovative Maßnahmen zu ergreifen, die ihm einen Wettbewerbsvorsprung auf dem Arbeitsmarkt für Fach- und Führungskräfte verleihen. „Sozialleistungsmanagement" wendet sich an Unternehmer, Personalleiter, Führungskräfte auf allen Ebenen sowie Personal- und Unternehmensberater, aber auch an Personal-und Betriebsräte, die im Hinblickauf das Machbare und auf neuere Entwicklungen bei Sozialleistungen auf dem laufenden bleiben wollen.
Aus traditioneller, aufbauorganisatorischer Sicht gilt die Arbeitszeit als eine Randbedingung bei der Aufgabengestaltung. Sofern persönliche Arbeitszeit und Betriebszeit jedoch nicht notwendigerweise übereinstimmen müssen und auch eine zunehmende Entkopplung von Mensch-Mensch- und Mensch-Maschine- Systemen denkbar ist, desto eher ist auch die Arbeitszeit selbst in organisatorische Überlegungen mit einzubeziehen. Dabei kommt den Möglichkeiten flexibler Arbeitszeitgestaltung zunehmende Bedeutung zu, unabhängig davon, ob sie in kollektive oder in individuelle Arbeitszeitregelungen Eingang finden. Insgesamt wird die Zeit-Organisation zu einem Feld organisatorischer Gestaltung mit Konsequenzen auch für die Führung, die durchaus erheblich sein können. Im folgenden Beitrag beschreibt der Autor die Arbeitszeit als Objekt organisatorischer Gestaltung. Im Mittelpunkt der Ausführungen stehen Formen der flexiblen Arbeitszeit und ihre organisatorischen Konsequenzen sowie Auswirkungen auf die Führung. Abschließend werden organisatorische Aspekte bei der Einführung flexibler Arbeitszeiten erörtert und die Frage diskutiert, wer für die Organisation der Arbeitszeit zuständig ist.
Inhalt: 1. Prinzipien der Personalpolitik 1.1 Führung und Zusammenarbeit 1.2 Weiterbildung und Information 1.3 Leistung und Gleichbehandlung 2. Grundzüge der Personalarbeit 2.1 Personalverwaltung 2.2 Personalbetreuung 2.3 Abstimmung in Personalfragen 2.31 Rechtliche Aspekte 2.32 Systematik auch in Einzelfällen 3. Personalfunktion im Unternehmen 3.1 Entwicklungsphasen 3.2 Systematisierungsmuster 3.3 Institutionale Aspekte 3.31 Gesellschafts- und mitbestimmungsrechtliche Voraussetzungen 3.32 Das Personalressort und seine Aufgabenbereiche 3.4 Aktuelle Entwicklungsperspektiven 3.41 Koordinationsmechanismen im Wandel 3.42 Personalstrategien 3.43 Differenzierung und Integration 3.44 Flexibilisierung und Generalisierung 3.5 Die Beiträge dieses Bandes 3.51 Rahmenbedingungen 3.52 Personen- und arbeitsplatzbezogene Leistungen 3.53 Funktionsbereiche 3.54 Entwicklungstendenzen
Mitarbeiterbeurteilung
(1992)
Inhalt: 1. Personalpolitische Ausgangslage 1.1 Mitarbeiterbeurteilung als Element der Personalführung 1.2 Personalbeurteilung und Managementdiagnostik 1.3 Verbreitung und Anwendung von Beurteilungssysteme 2. Beurteilungssysteme 2.1 Systemarten 2.2 Beurteilungsanlaß und Geltungsbereich 2.3 Beurteilungskriterien 2.4 Beurteilungsstufen 2.5 Beurteilungsergebnis und Förderungsteil 2.6 Tendenzen der Systementwicklung 3. Beurteilungstechnik und Beurteilungshilfen 3.1 Beobachten 3.2 Beschreiben 3.3 Bewerten 3.4 Besprechen 3.5 Beurteilungsfehler 4. Einführung eines Beurteilungssystems 4.1 Initiierung 4.2 Planung und Entwicklung 4.3 Informationsphase 4.4 Erprobung 4.5 Endgültige Einführung 4.6 Auswertung und Betreuung 5. Beurteilungstraining 6. Zusammenfassung
Personalabbau
(1992)
Inhalt: 1. Anlässe und Ursachen des Personalabbaus 2. Formen des Personalabbaus 3. Phasen des Personalabbaus 4. Ursachen und Folgen von Personalfreisetzungen 5. Planung des Personalabbaus 6. Behandlung von Freisetzungen 7. Sozialpläne und Beschäftigungspläne 8. Sozialplan und interner Arbeitsmarkt 9. Beschäftigungsplan und interner Arbeitsmarkt 10. Zusammenfassung
Die entgeltbezogene Flexibilisierung und Individualisierung der Vertragsgestaltung ßr Führungskräfte stellt ein wichtiges Problemfeld des europäischen Personalmanagements dar. Ähnliche Herausforderungen gelten generell auch für das internationale Personalmanagement schlechthin. Allerdings stellen sich im Hinblick auf die sich herausbildende Europäische Wirtschafts-, Währungs- und Sozialunion ungleich stärkere Harmonisierungserfordernisse. Grundsätzlich liegen in den einzelnen Ländern höchst unterschiedliche Arbeitskosten vor. Auch die Produktivitätsunterschiede sind enorm. Darüber hinaus sind alle wesentlichen sozial-rechtlichen Rahmenbedingungen höchst verschieden geregelt. Es verwundert daher nicht, daß die rechtlichen Grundlagen für den Einsatz von Führungskräften im Ausland ebenfalls recht vielfältig sind. Dabei fragt es sich, ob anstelle einer Harmonisierung um jeden Preis nicht eine Angleichung auf einem "mittleren" Niveau und darüber hinaus eine hinreichende Flexibilisierung der Vergütung von Führungskräften erfolgen sollte. In diesem Zusammehang werden einige typische Praxisbeispiele vorgestellt und problematisiert.
Inhalt: 1. Begriffsbildung und Problemstellung 2. "Kultur" der Arbeitgeber-Arbeitnehmer-Beziehungen 3. Arbeitgeber-Arbeitnehmer-Beziehungen und ihre betriebs-pädagogische Bedeutung 4. Interaktionsmuster zwischen Betriebsrat und Unternehmungsleitung 4.1 Typologie des Betriebsrats 4.2 Typologie der Beziehungen zwischen Unternehmensleitung und Betriebsrat (1) Gegenmachsmuster (2) Subordinationsmuster (erzwungener Kompromiß) (3) Partnerschaftsmuster (4) Harmoniemuster (5) Zusammenfassung 5. Änderung von Interaktionsmustern im Zeitablauf 6. Betriebspädagogische und personalwirtschaftliche Konsequenzen
Ein wichtiges Indiz für den Stellenwert des betrieblichen Personalwesens ist u.a. die Art und Weise, in der die Personalfunktion in der Unternehmensleitung vertreten ist. Es ist sicherlich nicht selbstverständlich, daß alle Vorstandsmitglieder das Personalmanagement als einen wichtigen Strategiefaktor ansehen und im Sinne moderner Human Resource Management-Konzeptionen ihren Beitrag zu dieser Top-Management-Aufgabe leisten. Andererseits gibt es gesetzliche Erfordernisse, welche die Existenz der Personalfunktion in der Unternehmensleitung jedenfalls formal vorsehen. So ist gemäß Mißbestimmungsgesetz 1976 ein Mitglied der Unternehmungsleitung als Arbeitsdirektor und mit Zuständigkeit für den Kernbereich der Personalund Sozialwesens zu bestellen. Im folgenden sollen einige Ergebnisse aus einer repräsentativen Untersuchung über Arbeitsdirektoren gemäß MitbestG von 1976 vorgestellt werden, wobei sowohl auf personelle und positioneile als auch auf personalpolitische Aspekte sowie auf Fragen der Betriebs- und Unternehmungsverfassung (Industrial Relations) Bezug genommen wird.
Arbeitszeit und Wertewandel
(1993)
Inhalt: 1. Arbeitszeit und Wertwandel als personal- und tarifpolitische Kategorien 1.1. Dauer und Lage der Arbeitszeit als Reflex von Wertvorstellungen 1.2. Wertewandel als Ergebnis der Veränderung der Arbeitszeit 1.3. Personal- und tarifpolitische Konsequenzen 2. Zur Diskussion des Wertewandels in der Arbeitswelt 2.1. Ansichten über den Verlauf des Wertewandels 2.2. Ansichten über die Ursachen des Wertewandels 2.3. Ansichten über die Auswirkungen des Wertewandels 3. Wertvorstellungen der Arbeitnehmer zur Arbeitszeitgestaltung 3.1. Wünsche zur Arbeitszeitverkürzung 3.2. Wünsche zur Umgestaltung der Arbeitszeit 4. Personal- und tarifpolitische Gestaltungsfelder 4.1. Arbeitszeit und Wertewandel aus der Sicht der Tarifpartner 4.2. Arbeitszeit und Wertewandel aus betrieblicher Sicht 4.3. Arbeitszeit und Wertewandel als individuelles Problem
Der vorliegende Beitrag faßt die wichtigsten Ergebnisse einer Untersuchung zur organisatorischen Eingliederung des Personalressorts in die Unternehmensstruktur zusammen: Nur in einem Drittel der betroffenen Unternehmen wurde erst durch das MitbestG von 1976 ein Personalressort initiiert. In den übrigen Unternehmen war ein Personalressort bereits vor 1976 i m Vorstand etabliert. Dabei liegt der Anteil der Arbeitsdirektoren, die eine ausschließliche Zuständigkeit für das Personalressort haben, bei knapp 30%. Über 70% vertreten in der Geschäftsleitung mindestens ein weiteres Ressort. Auch der Kompetenzbereich der Arbeitsdirektoren im Hinblick auf personalpolitische Aufgaben ist nicht einheitlich. So sind in 100% der befragten Unternehmen die Arbeitsdirektoren für Fragen der Betriebsverfassung zuständig Lediglich 82,5% übertragen ihnen dagegen die Zuständigkeit für Leitende Angestellte. Auch hinsichtlich der Organisation des Personalwesens gibt es erhebliche Unterschiede zwischen den Unternehmen, abhängig von Unternehmensgröße, Branche, Produktionsprogramm und historischen Entwicklungen.
Dieter Wagner untersucht die Art und Weise, in der die Personalfunktion in der Unternehmensleitung vertreten ist. Diskutiert werden sowohl die Dezentralisation der Personalarbeit als non plus ultra des modernen Personalmanagements als auch die Bedeutung des strategischen Personalmanagements. Auf der Grundlage umfangreicher Untersuchungen über Arbeitsdirektoren bzw. Personalvorstände in mitbestimmten Unternehmungen werden die wichtigsten Handlungsgrundlagen und die Zusammenarbeit der Beteiligten an der Betriebs- und Unternehmensverfassung kritisch dargestellt. Darüber hinaus entwickelt der Autor konzeptionelle Perspektiven eines Human Resources Management durch die Unternehmensführung. Dieter Wagner spricht nicht nur personalpolitische Empfehlungen aus, sondern knüpft zugleich die Verbindung zu aktuellen Entwicklungstendenzen einer dezentralen Personalorganisation und zum internationalen Personalmanagement. „Personalfunktion in der Unternehmensleitung" richtet sich an Studenten und Wissenschaftler der Betriebswirtschaftslehre, insbesondere mit den Schwerpunkten Personalwesen, Organisation und Unternehmensführung. Für Führungskräfte aller Branchen und besonders für Personalvorstände und Personalleiter ist dieses Buch ein wertvolles Nachschlagewerk.
Konflikt : in Organisationen
(1982)
Konflikt-Management
(1976)