@phdthesis{Abbas2011,
  author    = {Abbas, Raya},
  title     = {Die Verm{\"o}gensbeziehungen der Ehegatten und nichtehelichen Lebenspartner im serbischen Recht},
  series = {Studien zum ausl{\"a}ndischen und internationalen Privatrecht},
  volume    = {260},
  journal   = {Studien zum ausl{\"a}ndischen und internationalen Privatrecht},
  publisher = {Mohr Siebeck},
  address   = {T{\"u}bingen},
  isbn      = {978-3-16-150847-9},
  issn      = {0720-1141},
  pages     = {297 S.},
  year      = {2011},
  language  = {de}
}
@phdthesis{AbdAllahSalem2018,
  author    = {Abd Allah Salem, Mohamed},
  title     = {Comparative and systemic metabolomic analysis of the model plant Arabidopsis thaliana after perturbing the essential Target of Rapamycin (TOR) pathway},
  school      = {Universit{\"a}t Potsdam},
  pages     = {113},
  year      = {2018},
  language  = {en}
}
@phdthesis{AbdelHaliem2003,
  author    = {Abdel-Haliem, Mahmoud E. F.},
  title     = {Molecular-physiological analysis of two novel isoforms of phosphoinositide kinases from Arabidopisis thaliana (L.) Heynh.},
  pages     = {122 S.},
  year      = {2003},
  language  = {en}
}
@phdthesis{AbdelHamid1998,
  author    = {Abdel-Hamid, Hamed Ahmed},
  title     = {Stellar populations, dust and gas in NGC 3077},
  publisher = {Wiss. Verl. Berlin},
  address   = {Berlin},
  isbn      = {3-932089-08-1},
  pages     = {117 S.},
  year      = {1998},
  language  = {en}
}
@phdthesis{Abdelfadil2013,
  author    = {Abdelfadil, Khaled Mohamed},
  title     = {Geochemistry of Variscan lamprophyre magmatism in the Saxo-Thuringian Zone},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-68854},
  school      = {Universit{\"a}t Potsdam},
  year      = {2013},
  abstract  = {Lamprophyres are mantle-derived magmatic rocks, commonly occurring as dikes. They are readily identified from their field setting, petrography, chemical and mineralogical composition. These rocks not only provide important information on melting processes in the mantle, but also on geodynamic processes modifying the mantle. There are numerous occurrences of lamprophyres in the Saxo-Thuringian Zone of Variscan Central Europe, which are useful to track the variable effects of the Variscan orogeny on local mantle evolution. This work presents and evaluates the mineralogical, geochemical, and Sr-Nd-Pb isotopic data of late-Variscan calc-alkaline lamprophyres, post-Variscan ultramafic lamprophyres, of alkaline basalt from Lusatia, and, for comparison, of pre-Variscan gabbros. In addition, lithium isotopic signatures combined with Sr-Nd-Pb isotopic data of late-Variscan calc-alkaline lamprophyres from three different Variscan Domains (i.e., Erzgebirge, Lusatia, and Sudetes) are used to assess compositional changes of the mantle during Variscan orogeny.},
  language  = {de}
}
@phdthesis{AbdelwahabHusseinAbdelwahabElsayed2019,
  author    = {Abdelwahab Hussein Abdelwahab Elsayed, Ahmed},
  title     = {Probabilistic, deep, and metric learning for biometric identification from eye movements},
  doi       = {10.25932/publishup-46798},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-467980},
  school      = {Universit{\"a}t Potsdam},
  pages     = {vi, 65},
  year      = {2019},
  abstract  = {A central insight from psychological studies on human eye movements is that eye movement patterns are highly individually characteristic. They can, therefore, be used as a biometric feature, that is, subjects can be identified based on their eye movements. This thesis introduces new machine learning methods to identify subjects based on their eye movements while viewing arbitrary content. The thesis focuses on probabilistic modeling of the problem, which has yielded the best results in the most recent literature. The thesis studies the problem in three phases by proposing a purely probabilistic, probabilistic deep learning, and probabilistic deep metric learning approach. In the first phase, the thesis studies models that rely on psychological concepts about eye movements. Recent literature illustrates that individual-specific distributions of gaze patterns can be used to accurately identify individuals. In these studies, models were based on a simple parametric family of distributions. Such simple parametric models can be robustly estimated from sparse data, but have limited flexibility to capture the differences between individuals. Therefore, this thesis proposes a semiparametric model of gaze patterns that is flexible yet robust for individual identification. These patterns can be understood as domain knowledge derived from psychological literature. Fixations and saccades are examples of simple gaze patterns. The proposed semiparametric densities are drawn under a Gaussian process prior centered at a simple parametric distribution. Thus, the model will stay close to the parametric class of densities if little data is available, but it can also deviate from this class if enough data is available, increasing the flexibility of the model. The proposed method is evaluated on a large-scale dataset, showing significant improvements over the state-of-the-art. Later, the thesis replaces the model based on gaze patterns derived from psychological concepts with a deep neural network that can learn more informative and complex patterns from raw eye movement data. As previous work has shown that the distribution of these patterns across a sequence is informative, a novel statistical aggregation layer called the quantile layer is introduced. It explicitly fits the distribution of deep patterns learned directly from the raw eye movement data. The proposed deep learning approach is end-to-end learnable, such that the deep model learns to extract informative, short local patterns while the quantile layer learns to approximate the distributions of these patterns. Quantile layers are a generic approach that can converge to standard pooling layers or have a more detailed description of the features being pooled, depending on the problem. The proposed model is evaluated in a large-scale study using the eye movements of subjects viewing arbitrary visual input. The model improves upon the standard pooling layers and other statistical aggregation layers proposed in the literature. It also improves upon the state-of-the-art eye movement biometrics by a wide margin. Finally, for the model to identify any subject — not just the set of subjects it is trained on — a metric learning approach is developed. Metric learning learns a distance function over instances. The metric learning model maps the instances into a metric space, where sequences of the same individual are close, and sequences of different individuals are further apart. This thesis introduces a deep metric learning approach with distributional embeddings. The approach represents sequences as a set of continuous distributions in a metric space; to achieve this, a new loss function based on Wasserstein distances is introduced. The proposed method is evaluated on multiple domains besides eye movement biometrics. This approach outperforms the state of the art in deep metric learning in several domains while also outperforming the state of the art in eye movement biometrics.},
  language  = {en}
}
@phdthesis{Abed2010,
  author    = {Abed, Jamil},
  title     = {An iterative approach to operators on manifolds with singularities},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-44757},
  school      = {Universit{\"a}t Potsdam},
  year      = {2010},
  abstract  = {We establish elements of a new approach to ellipticity and parametrices within operator algebras on manifolds with higher singularities, only based on some general axiomatic requirements on parameter-dependent operators in suitable scales of spaes. The idea is to model an iterative process with new generations of parameter-dependent operator theories, together with new scales of spaces that satisfy analogous requirements as the original ones, now on a corresponding higher level. The "full" calculus involves two separate theories, one near the tip of the corner and another one at the conical exit to infinity. However, concerning the conical exit to infinity, we establish here a new concrete calculus of edge-degenerate operators which can be iterated to higher singularities.},
  language  = {en}
}
@phdthesis{Abedjan2014,
  author    = {Abedjan, Ziawasch},
  title     = {Improving RDF data with data mining},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-71334},
  school      = {Universit{\"a}t Potsdam},
  year      = {2014},
  abstract  = {Linked Open Data (LOD) comprises very many and often large public data sets and knowledge bases. Those datasets are mostly presented in the RDF triple structure of subject, predicate, and object, where each triple represents a statement or fact. Unfortunately, the heterogeneity of available open data requires significant integration steps before it can be used in applications. Meta information, such as ontological definitions and exact range definitions of predicates, are desirable and ideally provided by an ontology. However in the context of LOD, ontologies are often incomplete or simply not available. Thus, it is useful to automatically generate meta information, such as ontological dependencies, range definitions, and topical classifications. Association rule mining, which was originally applied for sales analysis on transactional databases, is a promising and novel technique to explore such data. We designed an adaptation of this technique for min-ing Rdf data and introduce the concept of "mining configurations", which allows us to mine RDF data sets in various ways. Different configurations enable us to identify schema and value dependencies that in combination result in interesting use cases. To this end, we present rule-based approaches for auto-completion, data enrichment, ontology improvement, and query relaxation. Auto-completion remedies the problem of inconsistent ontology usage, providing an editing user with a sorted list of commonly used predicates. A combination of different configurations step extends this approach to create completely new facts for a knowledge base. We present two approaches for fact generation, a user-based approach where a user selects the entity to be amended with new facts and a data-driven approach where an algorithm discovers entities that have to be amended with missing facts. As knowledge bases constantly grow and evolve, another approach to improve the usage of RDF data is to improve existing ontologies. Here, we present an association rule based approach to reconcile ontology and data. Interlacing different mining configurations, we infer an algorithm to discover synonymously used predicates. Those predicates can be used to expand query results and to support users during query formulation. We provide a wide range of experiments on real world datasets for each use case. The experiments and evaluations show the added value of association rule mining for the integration and usability of RDF data and confirm the appropriateness of our mining configuration methodology.},
  language  = {en}
}
@phdthesis{Abegg1998,
  author    = {Abegg, Christoph},
  title     = {Parameterisierung atmosph{\"a}rischer Grenzschichtprozesse in einem regionalen Klimamodell der Arktis},
  address   = {Potsdam},
  pages     = {116 S.},
  year      = {1998},
  language  = {de}
}
@phdthesis{Abel2015,
  author    = {Abel, Johanna},
  title     = {Transatlantisches K{\"o}rperDenken},
  series = {Potsdamer inter- und transaktuelle Texte (POINTE)},
  journal   = {Potsdamer inter- und transaktuelle Texte (POINTE)},
  number    = {12},
  publisher = {Frey},
  address   = {Berlin},
  isbn      = {978-3-938944-89-9},
  pages     = {334},
  year      = {2015},
  language  = {de}
}
@phdthesis{Abel2005,
  author    = {Abel, Markus},
  title     = {Turbulent flows : transport, analysis and modeling},
  address   = {Potsdam},
  pages     = {Getr. Z{\"a}hlung},
  year      = {2005},
  language  = {en}
}
@phdthesis{Abel1998,
  author    = {Abel, Markus},
  title     = {Localization in driven nonlinear lattices},
  address   = {Potsdam},
  pages     = {100 S. : graph. Darst.},
  year      = {1998},
  language  = {en}
}
@phdthesis{Abon2015,
  author    = {Abon, Catherine Cristobal},
  title     = {Radar-based rainfall retrieval for flood forecasting in a meso-scale catchment},
  school      = {Universit{\"a}t Potsdam},
  pages     = {93 S.},
  year      = {2015},
  language  = {en}
}
@phdthesis{Abouelmaati2017,
  author    = {Abouelmaati, Sherif Abdelfattah Abdelaziz},
  title     = {Intellektuellen-Rolle in G{\"u}nter Grass Werken},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-396736},
  school      = {Universit{\"a}t Potsdam},
  pages     = {244},
  year      = {2017},
  abstract  = {Die vorliegende Arbeit tr{\"a}gt den Titel: Intellektuellen-Rolle in G{\"u}nter Grass Werken : „Die Plebejer proben den Aufstand"(1966), „{\"O}rtlich bet{\"a}ubt"(1969), „Aus dem Tagebuch einer Schnecke"(1972), und „Ein weites Feld"(1995). Das erste Kapitel befasst sich insgesamt mit drei Haupttiteln II. Der Intellektuelle II.1 Das allgemeine Umfeld In diesem Teil der Dissertation sollen Aussagen getroffen werden, die auf folgende und weitere Fragen eine Antwort geben: Was ist ein Intellektueller? Wie kam der Begriff zustande? Gibt es Unterschiede zwischen den Intellektuellen und wie werden sie eingeteilt? II.2 Das deutsche Umfeld Die Behandlung des Nazisystems und dessen historische Hintergr{\"u}nde vermittelt bedeutsame Lehren. Aber wozu braucht man diese Lehren? Gibt es Spuren von Nationalsozialismus heutzutage? Wo waren die Intellektuellen bei der Bildung des Nationalsozialismus? Ist der Nationalsozialismus erst mit Hitler aufgetaucht? Wenn zuvor, in welcher Phase hat er sich im Bewusstsein der Deutschen verankert? Ob theoretische bzw. geistige Tendenzen dazu beigetragen haben? II.3 Das Bild von Grass als Intellektueller II.3.1 Positionierung Eine Hauptthese f{\"u}r Grass intellektuelle Positionierung wird durch die Verbindung zwischen Grass' Grundkonzeption der gesellschaftspolitischen Intellektualit{\"a}t und der Gruppe 47 ermittelt. Dann bezweckt die Behandlung von Grass Bild nach Erscheinen seines autobiographischen Werks: „Beim H{\"a}uten der Zwiebel" (2006), dass seine Intellektualit{\"a}t nicht nur aus dem positiven, sondern auch aus dem negativen Profil beleuchtet wird. Aus der Darstellung zahlreicher Ansichten von G{\"u}nter Grass werden f{\"u}nf thematische Kernpunkte als Konzepte behandelt. Unter jedem Konzept sollen spezifische Vorschl{\"a}ge zur gesellschaftlichen Positionierung aufgezeigt werden. II.3.2 Grass' politische Merkmale Es handelt sich hier um die intellektuellen Charaktereigenschaften. Dadurch kommen manche Fragen zu Wort: Hat G{\"u}nter Grass gesellschaftliche Aktivit{\"a}ten? Hat er die Voraussetzungen daf{\"u}r? Wie ist der Umfang seiner Aktivit{\"a}ten? Hat die Gruppe 47 Einfluss auf Grass intellektuelle Merkmale? Steht bei Grass eine Methode der gesellschaftspolitischen Arbeit zur Verf{\"u}gung? Dann wird die politische Sprache von G{\"u}nter Grass und ihre Wirkung auf den Rezipienten untersucht. Danach wird nach Grass' Auffassung von der Revision gefragt und ob sie mit seiner Auffassung der Aufkl{\"a}rung zusammenpasst. Darauf wird die Funktion der Revision in seinem literarischen Werk und in seiner gesellschaftspolitischen Aktivit{\"a}t gezeigt. Abschließend werden die Argumente seiner Intellektualit{\"a}t untersucht: Wie hat Grass' gesellschaftspolitische Aktivit{\"a}t den konkreten politischen Rahmen ber{\"u}cksichtigt? Um diese Frage zu beantworten, muss der Zusammenhang zwischen Politik und Moral verdeutlicht werden. III. Historischer Kontext und Inhalt der Werke Unter diesem Titel wird erstens der historische Zusammenhang der untersuchten Werke skizziert. Dann werden meistens durch Argumente aus jedem Werk selbst nicht nur der Kern des Werkes und sein Handlungsverlauf, sondern auch die daf{\"u}r angewandte Methode dargestellt. IV. Bezug der untersuchten Werke zu konkreten gesellschaftspolitischen Fragen IV.1 Interaktionswege des Intellektuellen mit der Gesellschaft, vor allem beim Wandel gesellschaftspolitischer Prozesse Zentralkonzepte des ersten Werkes sind: Vermittlung, Engagement, Solidarit{\"a}t und die Aktualit{\"a}t als Maßstab. Diese werden durch zwei Konzepte des zweiten Werkes: Appell an Generationen beim Wechsel und Zusammenhaltsprinzip an Revision gebunden, sowie durch die Behandlung vom Prozess der Meinungsbildung im vierten Werk ausgearbeitet. IV.2 Thematische Aspekte zur Vermeidung eines Naziregimes Aus den thematischen Perspektiven der drei letzten Werke geht eine bunte Sammlung intellektueller Konzepte aus, die zur Bek{\"a}mpfung von Nazivorspr{\"u}nge verwendet werden k{\"o}nnen. V. P{\"a}dagogische Strategien der untersuchten Werke Die p{\"a}dagogischen Aspekte der untersuchten Werke sollen intellektuelle Werte vermitteln, die einen bedeutenden Beitrag zur L{\"o}sung gesellschaftspolitischer Probleme und Konflikte leisten. VI. Entwicklung der literarischen und gesellschaftspolitischen Vision Hier wird die Entwicklungslinie der gesellschaftspolitischen Vision in den untersuchten Werken verfolgt. VII. Zur Rezeption der vier Werke Durch die Auseinandersetzung mit der negativen Kritik wird angestrebt, ihre Subjektivit{\"a}t darzulegen, damit der gesellschaftspolitische Wert der vier Werke enth{\"u}llt wird.},
  language  = {de}
}
@phdthesis{Abouserie2018,
  author    = {Abouserie, Ahed},
  title     = {Ionic liquid precursors for multicomponent inorganic nanomaterials},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-418950},
  school      = {Universit{\"a}t Potsdam},
  pages     = {xx, 193},
  year      = {2018},
  abstract  = {Health effects, attributed to the environmental pollution resulted from using solvents such as benzene, are relatively unexplored among petroleum workers, personal use, and laboratory researchers. Solvents can cause various health problems, such as neurotoxicity, immunotoxicity, and carcinogenicity. As such it can be absorbed via epidermal or respiratory into the human body resulting in interacting with molecules that are responsible for biochemical and physiological processes of the brain. Owing to the ever-growing demand for finding a solution, an Ionic liquid can use as an alternative solvent. Ionic liquids are salts in a liquid state at low temperature (below 100 C), or even at room temperature. Ionic liquids impart a unique architectural platform, which has been interesting because of their unusual properties that can be tuned by simple ways such as mixing two ionic liquids. Ionic liquids not only used as reaction solvents but they became a key developing for novel applications based on their thermal stability, electric conductivity with very low vapor pressure in contrast to the conventional solvents. In this study, ionic liquids were used as a solvent and reactant at the same time for the novel nanomaterials synthesis for different applications including solar cells, gas sensors, and water splitting. The field of ionic liquids continues to grow, and become one of the most important branches of science. It appears to be at a point where research and industry can work together in a new way of thinking for green chemistry and sustainable production.},
  language  = {en}
}
@phdthesis{Abromeit2021,
  author    = {Abromeit, Wolfgang},
  title     = {Vertragsgestaltung bei komplexen Vertr{\"a}gen des Staates mit Privaten},
  series = {Schriften zum {\"o}ffentlichen Recht},
  journal   = {Schriften zum {\"o}ffentlichen Recht},
  number    = {1444},
  publisher = {Duncker \& Humblot},
  address   = {Berlin},
  isbn      = {978-3-428-15802-7},
  issn      = {0582-0200},
  pages     = {307},
  year      = {2021},
  abstract  = {Vertragsgestaltung ist ein praktisch sehr relevantes Thema, das wegen der Justizorientierung in der Wissenschaft noch weitgehend stiefm{\"u}tterlich behandelt wird. In dieser Untersuchung wird, zumindest f{\"u}r die besonders delikate Konstellation bei komplexen Kooperationen des Staats mit Privaten ({\"O}PP/PPP), Abhilfe geschaffen. Dabei gr{\"u}ndet die Analyse auf einer fundierten Typisierung und Charakterisierung der Probleme solcher Projekte. Den theoretischen Rahmen liefert eine effizienzorientierte Studie institutionen{\"o}konomischer Ans{\"a}tze, namentlich der Transaktionskostentheorie und der Prinzipal-Agenten-Theorie, r{\"u}ckversichert {\"u}ber die praxisorientierten Grundregeln der vertraglichen Risikoverteilung. So gelingt es praktische Formulierungsvorschl{\"a}ge f{\"u}r Standardprobleme der Vertragsgestaltung, wie Leistungsbestimmungen, Anpassungsmechanismen, Konfliktbeilegungsregeln, Informationsmechanismen und K{\"u}ndigungsregeln zu finden. Diese werden auch aus den Erfolgsbedingungen erl{\"a}utert.},
  language  = {de}
}
@phdthesis{AbuJarour2011,
  author    = {AbuJarour, Mohammed},
  title     = {Enriched service descriptions: sources, approaches and usages},
  address   = {Potsdam},
  pages     = {140 S.},
  year      = {2011},
  language  = {en}
}
@phdthesis{AbuJarour2021,
  author    = {AbuJarour, Safa'a},
  title     = {Digital inclusion},
  doi       = {10.25932/publishup-51053},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-510535},
  school      = {Universit{\"a}t Potsdam},
  pages     = {217},
  year      = {2021},
  abstract  = {In this thesis, we tackle two social disruptions: recent refugee waves in Germany and the COVID-19 pandemic. We focus on the use of information and communication technology (ICT) as a key means of alleviating these disruptions and promoting social inclusion. As social disruptions typically lead to frustration and fragmentation, it is essential to ensure the social inclusion of individuals and societies during such times. In the context of the social inclusion of refugees, we focus on the Syrian refugees who arrived in Germany as of 2015, as they form a large and coherent refugee community. In particular, we address the role of ICTs in refugees' social inclusion and investigate how different ICTs (especially smartphones and social networks) can foster refugees' integration and social inclusion. In the context of the COVID-19 pandemic, we focus on the widespread unconventional working model of work from home (WFH). Our research here centers on the main constructs of WFH and the key differences in WFH experiences based on personal characteristics such as gender and parental status. We reveal novel insights through four well-established research methods: literature review, mixed methods, qualitative method, and quantitative method. The results of our research have been published in the form of eight articles in major information systems venues and journals. Key results from the refugee research stream include the following: Smartphones represent a central component of refugee ICT use; refugees view ICT as a source of information and power; the social connectedness of refugees is strongly correlated with their Internet use; refugees are not relying solely on traditional methods to learn the German language or pursue further education; the ability to use smartphones anytime and anywhere gives refugees an empowering feeling of global connectedness; and ICTs empower refugees on three levels (community participation, sense of control, and self-efficacy). Key insights from the COVID-19 WFH stream include: Gender and the presence of children under the age of 18 affect workers' control over their time, technology usefulness, and WFH conflicts, while not affecting their WFH attitudes; and both personal and technology-related factors affect an individual's attitude toward WFH and their productivity. Further insights are being gathered at the time of submitting this thesis. This thesis contributes to the discussion within the information systems community regarding how to use different ICT solutions to promote the social inclusion of refugees in their new communities and foster an inclusive society. It also adds to the growing body of research on COVID-19, in particular on the sudden workplace transformation to WFH. The insights gathered in this thesis reveal theoretical implications and future opportunities for research in the field of information systems, practical implications for relevant stakeholders, and social implications related to the refugee crisis and the COVID-19 pandemic that must be addressed.},
  language  = {en}
}
@phdthesis{Acena2009,
  author    = {Acena, Andr{\´e}s E.},
  title     = {Convergent null data expansions at space-like infinity of stationary vacum solutions},
  address   = {Potsdam},
  pages     = {69 Bl. : graph. Darst.},
  year      = {2009},
  language  = {en}
}
@phdthesis{Achsani2004,
  author    = {Achsani, Noer Azam},
  title     = {Einfluss der indonesischen Wirtschaftsentwicklung und internationaler Faktoren auf die Jakartaer B{\"o}rse : statistische Analyse und {\"o}konometrische Modellierung},
  publisher = {Logos Verl.},
  address   = {Berlin},
  isbn      = {3-8325-0775-2},
  pages     = {xv, 164 S. : graph. Darst.},
  year      = {2004},
  language  = {de}
}