@phdthesis{Grochowska2011, author = {Grochowska, Marta}, title = {{\"O}konomische, soziale und r{\"a}umliche Folgen der saisonalen Arbeitsmigration im Herkunftsgebiet : am Beispiel der Region Konin (Polen)}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-137-0}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-49649}, school = {Universit{\"a}t Potsdam}, pages = {390}, year = {2011}, abstract = {Die vorliegende Arbeit basiert auf Forschungen in den Jahren 2007-2009. Sie betrachtet die saisonale Arbeitsmigration aus der polnischen Region Konin, wo die Arbeitsmigration aus {\"o}konomischen Gr{\"u}nden, wie auch in {\"a}hnlich strukturierten Gebieten Polens, eine lange Tradition hat, die bis ins 19. Jahrhundert zur{\"u}ckgeht. Sie wird die saisonale Migration ins Ausland mit den {\"o}konomischen, sozialen und r{\"a}umlichen Auswirkungen aus der Perspektive des Einzelnen und seiner unmittelbaren Umgebung, aber auch der Gesellschaft und Herkunftsgebiet der Migranten betrachtet.}, language = {de} } @phdthesis{Voelker2011, author = {V{\"o}lker, Jan}, title = {{\"A}sthetik der Lebendigkeit : Kants dritte Kritik}, publisher = {Fink}, address = {Paderborn}, isbn = {978-3-7705-5161-3}, pages = {274 S.}, year = {2011}, language = {de} } @phdthesis{Hoernke2011, author = {H{\"o}rnke, Maria}, title = {ß-Sheet formation of amyloidogenic model peptides at hydrophobic-hydrophilic interfaces}, address = {Potsdam}, pages = {107, XXI S.}, year = {2011}, language = {en} } @phdthesis{Ehlers2011, author = {Ehlers, Nils}, title = {Zwischen sch{\"o}n und erhaben : Friedrich Schiller als Denker des Politischen ; im Spiegel seiner theoretischen Schriften}, publisher = {Cuvillier}, address = {G{\"o}ttingen}, isbn = {978-3-86955-714-4}, pages = {316 S.}, year = {2011}, language = {de} } @phdthesis{Ehrke2011, author = {Ehrke, J{\"u}rgen}, title = {Zur Stabilisierung fragmentierter Staaten}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-155-4}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-53975}, school = {Universit{\"a}t Potsdam}, pages = {366}, year = {2011}, abstract = {Die internationale Staatengemeinschaft steht Sezessionsbestrebungen zur Aufspaltung bestehender Staaten gew{\"o}hnlich ablehnend gegen{\"u}ber. Gleichzeitig wendet sie in vielen L{\"a}ndern Instrumente der Entwicklungspolitik an und greift so auch in den dortigen politischen Prozess ein. Untersucht wird, inwiefern Entwicklungspolitik so gestaltet werden kann, dass sie nicht, quasi als Nebenwirkung, einer Sezessionsbewegung zum Durchbruch verhilft. Betrachtet wird dabei neben der gezielten F{\"o}rderung wirtschaftlichen Wachstums auch das Instrument der Dezentralisierung, das oft als Mittel zur „Beruhigung" separatistischer Bestrebungen vorgeschlagen wird. Zuvor jedoch wird aufgewiesen, dass eine Politik, die Sezessionen verhindern will, zumindest in vielen F{\"a}llen auch moralphilosophisch schl{\"u}ssig begr{\"u}ndet werden kann. Den Abschluss der Arbeit bilden drei Fallstudien zu Sezessionen auf dem Gebiet der ehemaligen Sowjetunion.}, language = {de} } @phdthesis{Krey2011, author = {Krey, Olaf}, title = {Zur Rolle der Mathematik in der Physik : Wissenschaftstheoretische Aspekte und Vorstellungen Physiklernender}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-59412}, school = {Universit{\"a}t Potsdam}, year = {2011}, abstract = {Mathematik spielt im Physikunterricht eine nicht unerhebliche Rolle - wenn auch eine zwiesp{\"a}ltige. Oft wird sie sogar zum Hindernis beim Lernen von Physik und kann ihr emanzipatorisches Potenzial nicht entfalten. Die vorliegende Arbeit stellt zwei Bausteine f{\"u}r eine begr{\"u}ndete Konzeption zum Umgang mit Mathematik beim Lernen von Physik zur Verf{\"u}gung. Im Theorieteil der Arbeit werden zum Einen wissenschaftstheoretische Aspekte der Rolle der Mathematik in der Physik aufgearbeitet und der physikdidaktischen Forschungsgemeinschaft im Zusammenhang zug{\"a}nglich gemacht. Zum anderen werden Forschungsergebnisse zu Vorstellungen Lernender {\"u}ber Physik und Mathematik sowie im Bereich der Epistemologie zusammengestellt. Im empirischen Teil der Arbeit werden Vorstellungen zur Rolle der Mathematik in der Physik von Sch{\"u}lerinnen und Sch{\"u}lern der Klassenstufen 10 und 12 sowie Physik-Lehramtstudierenden im Grundstudium mit Hilfe eines Fragebogens erhoben und unter Verwendung inhaltsanalytischer bzw. statistischer Methoden ausgewertet. Die Ergebnisse zeigen unter Anderem, dass Mathematik im Physikunterricht entgegen g{\"a}ngiger Meinungen bei den Lernenden nicht negativ, aber zumindest bei j{\"u}ngeren Lernenden formal und algorithmisch konnotiert ist.}, language = {de} } @phdthesis{Wang2011, author = {Wang, Long}, title = {X-tracking the usage interest on web sites}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-51077}, school = {Universit{\"a}t Potsdam}, year = {2011}, abstract = {The exponential expanding of the numbers of web sites and Internet users makes WWW the most important global information resource. From information publishing and electronic commerce to entertainment and social networking, the Web allows an inexpensive and efficient access to the services provided by individuals and institutions. The basic units for distributing these services are the web sites scattered throughout the world. However, the extreme fragility of web services and content, the high competence between similar services supplied by different sites, and the wide geographic distributions of the web users drive the urgent requirement from the web managers to track and understand the usage interest of their web customers. This thesis, "X-tracking the Usage Interest on Web Sites", aims to fulfill this requirement. "X" stands two meanings: one is that the usage interest differs from various web sites, and the other is that usage interest is depicted from multi aspects: internal and external, structural and conceptual, objective and subjective. "Tracking" shows that our concentration is on locating and measuring the differences and changes among usage patterns. This thesis presents the methodologies on discovering usage interest on three kinds of web sites: the public information portal site, e-learning site that provides kinds of streaming lectures and social site that supplies the public discussions on IT issues. On different sites, we concentrate on different issues related with mining usage interest. The educational information portal sites were the first implementation scenarios on discovering usage patterns and optimizing the organization of web services. In such cases, the usage patterns are modeled as frequent page sets, navigation paths, navigation structures or graphs. However, a necessary requirement is to rebuild the individual behaviors from usage history. We give a systematic study on how to rebuild individual behaviors. Besides, this thesis shows a new strategy on building content clusters based on pair browsing retrieved from usage logs. The difference between such clusters and the original web structure displays the distance between the destinations from usage side and the expectations from design side. Moreover, we study the problem on tracking the changes of usage patterns in their life cycles. The changes are described from internal side integrating conceptual and structure features, and from external side for the physical features; and described from local side measuring the difference between two time spans, and global side showing the change tendency along the life cycle. A platform, Web-Cares, is developed to discover the usage interest, to measure the difference between usage interest and site expectation and to track the changes of usage patterns. E-learning site provides the teaching materials such as slides, recorded lecture videos and exercise sheets. We focus on discovering the learning interest on streaming lectures, such as real medias, mp4 and flash clips. Compared to the information portal site, the usage on streaming lectures encapsulates the variables such as viewing time and actions during learning processes. The learning interest is discovered in the form of answering 6 questions, which covers finding the relations between pieces of lectures and the preference among different forms of lectures. We prefer on detecting the changes of learning interest on the same course from different semesters. The differences on the content and structure between two courses leverage the changes on the learning interest. We give an algorithm on measuring the difference on learning interest integrated with similarity comparison between courses. A search engine, TASK-Moniminer, is created to help the teacher query the learning interest on their streaming lectures on tele-TASK site. Social site acts as an online community attracting web users to discuss the common topics and share their interesting information. Compared to the public information portal site and e-learning web site, the rich interactions among users and web content bring the wider range of content quality, on the other hand, provide more possibilities to express and model usage interest. We propose a framework on finding and recommending high reputation articles in a social site. We observed that the reputation is classified into global and local categories; the quality of the articles having high reputation is related with the content features. Based on these observations, our framework is implemented firstly by finding the articles having global or local reputation, and secondly clustering articles based on their content relations, and then the articles are selected and recommended from each cluster based on their reputation ranks.}, language = {en} } @phdthesis{Nada2011, author = {Nada, Wael Mohamed Abdel-Rahman}, title = {Wood compost process engineering, properties and its impact on extreme soil characteristics}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-51046}, school = {Universit{\"a}t Potsdam}, year = {2011}, abstract = {The landfilling of biodegradable waste is proven to contribute to environmental degradation. Much wood and lumber is discharged as waste from the cleared fields. These woody wastes are subsequently disposed of by burning. However, it would be preferable to dispose of them without combustion to avoid the release of carbon dioxide, one of the critical greenhouse gases. Instead of burning these woody wastes, we should recycle them as future resources. One solution to this problem is to make compost from the waste. Compost use in agriculture is increasing as both an alternative to landfilling for the management of biodegradable waste, as well as means of increasing or preserving soil organic matter. This research aimed to contribute to the identification of a system for managing the production and utilization of wood waste (Quercus rubra and Pinus sylvestris) compost for sustainable agriculture, with particular regards to carbon dioxide produced from both compost and combustion of wood. Compost of wood was implemented in two consecutive trials. The first was carried out in greenhouse experiment in 4 liter pot of Quercus rubra and Pinus sylvestris (QR and PS) moisted by compost and tap water and infected by tiger worm (Eisenia fetida, EF) and European night crawlers (Dendrobaena veneta, DV) at different mixed ratios with lake mud (LM). The second was conducted in greenhouse experiment in 40 liter pot of the successful wood and worm from the first compost trial (QR and EF respectively). The tested wood (QR) was mixed separately by lake mud and horse manure and irrigated by compost and tap water. The final product, successful wood compost (QR) produced from the first trial (4 liter pot) was utilized in different mixed ratios with coal mine tailings (tertiary sand) in greenhouse pot trial to study his effects on improving soil physical and chemical properties and some plant growth parameters of RSM 7.2.1 grass. The wood compost produced from the second compost experiment (40 liter pot) and other artificial component named Arkadolith® were used as soil amelioration in field experiments of different selected sites with extremely unsuitable characteristics (tertiary and quaternary sand in Lusatia lignite region, Germany). The soil in each site was sowed by RSM 7.2.1 and autochthonous grasses. Also, some vermicompost samples were selected to study its thermal stability which compared with a soil sample (Niedermoorgleys) by using thermogravimetric analysis technique. Further investigation was achieved to evaluate the effect of charcoal as a source of carbon on vermicompost stability. Moreover some selected vermicompost samples were used to examine its microstructure under scanning electron microscope which compared also with the same soil used in thermal analysis. The obtained results under all studied experiments can be arranged as follow: First compost trial, Cumulative amount of carbon dioxide produced during composting period was lower than that evolved by combustion of wood. The results showed composting of wood can reduce the emitted CO2 up to 50 \% when compared with the amount of CO2 produced from combustion of wood. The effect of different studied factors on different studied parameters show that, QR wood compost have more responsive to decomposition processes and humification rate in comparison with PS wood compost. Under different infection worms, Eisenia fetida (EF) was better than Dendrobaena veneta (DV) in biodegradation rate. Compost water has had a better impact of tap water in all studied decomposition parameters. For example, The compost content of OM and total OC was decreased with the increase of the decomposition period in the treatments of compost water and EF worm, where this decrease was higher at mixed ratio of 1:3 (wood: mud, w/w). The total content of N in the final products takes reversible trend regarding to OM and C content. The high content of N was found in QR wood compost moisted by compost water and infected by EF worm. The content of both macro-and micro-nutrients was clearly positive affected by the studied factors. The content of these nutrients in QR wood compost was higher than that found in the compost of PS wood. Second compost trial, The observed data show that, the amount of CO2 produced by composting was lower than that evolved by combustion of wood. Composting of wood reduced CO2 emission up to 40 \% of the combustion wood CO2. Cumulative amount of CO2 produced from wood compost treated by horse manure was higher than that fount in the other treated by LM. The compost of wood treated by horse manure has had a high decomposition rate in comparison with that treated by lake mud. The treatments left without worms during all composting period and moisted by compost water have a responsive effects but it was lower than that infected by worms. Total and available contents of N, P, K, Mg, Zn, and Cu in the compost treated by HM were higher than that found in compost treated by LM. The other nutrients (Ca, Fe, Cu, and Mn) take reversible trend, which it was higher in LM than HM treatments. Thermal and microstructure analysis, The selected vermicompost samples from both first and second compost experiments showed, up to 200° C temperature the mass loss was due to free water and bound water (It was in vermicompost samples higher than soil sample). Mass loss from 200 to 550° C is due to easily oxidizable organic forms and it was higher in vermicompost than soil. In this stage the soil OM seems to be more stable than vermicompost which can be explained by a more intensive bond between the organic and inorganic components. At higher temperatures (T> 550° C) no significant detectable was appeared of soil organic matter. In contrast, the vermicompost treatments showed a high proportion of stable groups, especially aromatic compounds. These statements seem to be importance particularly for the practical application of the wood compost in terms of their long-term effect in the soil. The application of charcoal, showed no additional stabilizing effect of vermicompost. Also, the data show that, vermicompost structure characterized with high homogeneity and ratio of surface area to volume compared to those in soil structure. First plant trials (greenhouse), Different compost mixed ratios had positive impact on different extreme soil physiochemical properties. At the end of experiment (42 days) compost increased soil water holding capacity, decreased soil bulk and particle density and increased total porosity. The used wood compost modified soil buffering capacity and soil acidity. The availability of soil macro and micro nutrients were increased after adding wood compost. The wood compost had a positive effect in some growth parameters like fresh and dry matter yield of the selected grass. High dry matter yield and nutrients uptake was achieved with higher rates of compost application (25.0\% > 12.5\% > 3.0\% > 0.0 \%, w/w). Second plant trials (field experiment), Regarding to the effect of wood compost (QR) and Arkadolith® component on tertiary and quaternary sand, at the end of grown season (6 month) most soil and plant characteristics of tertiary sand were improved and it was better than that in quaternary sand. This trend reveals to, physical and chemical properties of tertiary sand was better than that in quaternary sand, like organic matter content, CEC, WHC, TOC, available nutrients. In the both sites, the effects of different type of soil conditioners arranged as follow: the treatments treated with wood compost is the better followed by the other treated with both wood compost and Arkadolith. Wood compost increased soil pH, CEC, soil buffering capacity, OM content, and soil WHC in comparison with Arkadolith which make a small improvement of these properties in both sites. Finally, Different growth parameters (height, covering, fresh and dry matter yield) of the used grasses were clearly positive affected by wood compost, with the highest production inherent to the treatments treated by the high amount of wood compost.}, language = {de} } @phdthesis{CamaraMattosMartins2011, author = {Camara Mattos Martins, Marina}, title = {What are the downstream targets of trehalose-6-phosphate signalling in plants?}, address = {Potsdam}, pages = {164 S.}, year = {2011}, language = {en} } @phdthesis{Brunner2011, author = {Brunner, Beatrice}, title = {Wettbewerb im Stromnetz : der Netzanschlussanspruch nach \S 17 EnWG}, series = {Schriftenreihe Institut f{\"u}r Energie- und Wettbewerbsrecht in der Kommunalen Wirtschaft e.V. an de}, volume = {42}, journal = {Schriftenreihe Institut f{\"u}r Energie- und Wettbewerbsrecht in der Kommunalen Wirtschaft e.V. an de}, publisher = {Nomos}, address = {Baden-Baden}, isbn = {978-3-8329-6027-8}, pages = {612 S.}, year = {2011}, language = {de} } @phdthesis{Engemaier2011, author = {Engemaier, Rita}, title = {Webbasierte kartografische Visualisierung : theoretisch-methodische Grundlegung und Ableitung eines Konzeptes zur Erzeugung von Qualit{\"a}tskarten auf Basis von Webservices}, address = {Potsdam}, pages = {111 S.}, year = {2011}, language = {de} } @phdthesis{He2011, author = {He, Ling}, title = {Wanderarbeiter in Peking : Soziale, {\"o}konomische und r{\"a}umliche Aspekte eines aktuellen Migrationsproblems in China}, address = {Potsdam}, pages = {220 S.}, year = {2011}, language = {de} } @phdthesis{Edel2011, author = {Edel, Friederike}, title = {Wandel und Ver{\"a}nderungsresistenz von Verwaltungskulturen}, series = {Forum Finanzwissenschaft und Public Managment}, volume = {10}, journal = {Forum Finanzwissenschaft und Public Managment}, publisher = {Eul}, address = {Lohmar}, isbn = {978-3-8441-0048-8}, pages = {261 S.}, year = {2011}, language = {de} } @phdthesis{Puellmann2011, author = {P{\"u}llmann, Dennis}, title = {Von Brecht zu Braun : Versuch {\"u}ber die Schwierigkeiten poetischer Sch{\"u}lerschaft}, volume = {4}, publisher = {Thiele}, address = {Mainz am Rhein}, isbn = {978-3-940884-42-8}, pages = {507 S.}, year = {2011}, language = {de} } @phdthesis{Mittag2011, author = {Mittag, Sonnhild}, title = {Vom Rosetta-Stone-Protein NitFhit zur Tumorsuppressorwirkung der humanen Nitrilase1}, address = {Potsdam}, pages = {113 S.}, year = {2011}, language = {de} } @phdthesis{Mikolayczyk2011, author = {Mikolayczyk, Rolf-Peter}, title = {Ver{\"a}nderungen des US-Bankensystems als Wurzel der Bankenkrise von 2008}, series = {Schriftenreihe Finanzierung und Banken}, volume = {16}, journal = {Schriftenreihe Finanzierung und Banken}, publisher = {Verl. Wiss. \& Praxis}, address = {Sternenfels}, isbn = {978-3-89673-598-0}, pages = {202 S.}, year = {2011}, language = {de} } @phdthesis{Maennle2011, author = {M{\"a}nnle, Philipp}, title = {Verwaltung (in) der Gesellschaft}, series = {Soziologische Schriften}, volume = {82}, journal = {Soziologische Schriften}, publisher = {Duncker \& Humblot}, address = {Berlin}, isbn = {978-3-428-13527-1}, pages = {526 S.}, year = {2011}, language = {de} } @phdthesis{Yustus2011, author = {Yustus, Ekaterina}, title = {Verfassungsgerichtsbarkeit in Russland und Deutschland}, series = {Europ{\"a}ische Hochschulschriften : Reihe 2, Rechtswissenschaften}, volume = {5205}, journal = {Europ{\"a}ische Hochschulschriften : Reihe 2, Rechtswissenschaften}, publisher = {Lang}, address = {Frankfurt am Main}, isbn = {978-3-631-60741-1}, issn = {0531-7312}, pages = {244 S.}, year = {2011}, language = {de} } @phdthesis{Hanisch2011, author = {Hanisch, Florian}, title = {Variational problems on supermanifolds}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-59757}, school = {Universit{\"a}t Potsdam}, year = {2011}, abstract = {In this thesis, we discuss the formulation of variational problems on supermanifolds. Supermanifolds incorporate bosonic as well as fermionic degrees of freedom. Fermionic fields take values in the odd part of an appropriate Grassmann algebra and are thus showing an anticommutative behaviour. However, a systematic treatment of these Grassmann parameters requires a description of spaces as functors, e.g. from the category of Grassmann algberas into the category of sets (or topological spaces, manifolds). After an introduction to the general ideas of this approach, we use it to give a description of the resulting supermanifolds of fields/maps. We show that each map is uniquely characterized by a family of differential operators of appropriate order. Moreover, we demonstrate that each of this maps is uniquely characterized by its component fields, i.e. by the coefficients in a Taylor expansion w.r.t. the odd coordinates. In general, the component fields are only locally defined. We present a way how to circumvent this limitation. In fact, by enlarging the supermanifold in question, we show that it is possible to work with globally defined components. We eventually use this formalism to study variational problems. More precisely, we study a super version of the geodesic and a generalization of harmonic maps to supermanifolds. Equations of motion are derived from an energy functional and we show how to decompose them into components. Finally, in special cases, we can prove the existence of critical points by reducing the problem to equations from ordinary geometric analysis. After solving these component equations, it is possible to show that their solutions give rise to critical points in the functor spaces of fields.}, language = {en} } @phdthesis{Neuhaeuser2011, author = {Neuh{\"a}user, Christian}, title = {Unternehmen als moralische Akteure}, series = {Suhrkamp Taschenbuch Wissenschaft}, volume = {1999}, journal = {Suhrkamp Taschenbuch Wissenschaft}, publisher = {Suhrkamp}, address = {Berlin}, isbn = {978-3-518-29599-1}, pages = {352 S.}, year = {2011}, language = {de} }