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Die Europäische Verfassung
(2007)
Inhalt: - Wiederbelebung des Europäischen Verfassungsprojektes – Essentiale der deutschen Ratspräsidentschaft - Die europäische Integration – vom Erfolg zur Stagnation - Der Sinn des Verfassungsprojektes – Bürgernähe und Handlungsfähigkeit der Union - Der Inhalt des Verfassungsvertrages – besser als sein Ruf - Bessere Ersatzlösungen? - Die Büchse der Pandora wieder öffnen? - Die wirkliche Wahl: Erhalt der engen Staatenunion oder ein lockeres Wirtschaftsgebilde?
Inhalt: - Das Europäische Parlament in der Systementwicklung der EU - Die parlamentarische Beteiligung auf Regierungskonferenzen – Von Nizza nach Rom - Das Europäische Parlament im Konvent - Die Bilanz: Das Parlament zwischen Konvent und Regierungskonferenz - Potenziale: Neue Legislativverantwortung - Der Verfassungsvertrag im EP: Die Bewältigung der Krise oder ein neuer Anfang? - Systembildende Funktionen unterhalb der Schwelle der Vertragsänderung - Reformen aufgrund des Selbstorganisationsrechts der Organe - Reformen durch Interinstitutionelle Abkommen - Reformen durch organrechtliche Beschlüsse - Die Grenzen der informellen Inkraftsetzung
Inhalt: - Gescheiterte Referenden, gescheiterte Ratifikation? - Referenden im Prozess der europäischen Integration - Präzedenzfälle Dänemark und Irland - Institutionen - Involvierte Länder - Ratifikationsprozess - Neustart der Ratifikation - Referenden zum EU Verfassungsvertrag: Wieso Misserfolg? - Schlussfolgerung
Das Ende der Ratlosigkeit
(2007)
Inhalt: - Fünf Ausgangsfaktoren 1. Der ursprüngliche Verfassungsvertrag ist gescheitert 2. Die Beibehaltung von Nizza ist keine Option 3. Zentrale Neuerungen des Verfassungsvertrags sollten gesichert werden 4. Inakzeptable Kompromisse gefährden Ratifizierung 5. Überwindung der Verfassungskrise erfordert komplexe Lösungsstrategie - Fünf Rettungsmodelle zur Zukunft des Verfassungsvertrags 1. Nizza Plus– Ausschöpfen des geltenden Primärrechts 2. Verfassung Minus und Verfassung Minus-Minus 3. Avantgarde- oder Kerneuropa-Modell 4. Verfassung Plus und Verfassung Plus-Plus 5. Änderung des geltenden Nizza-Vertrags – Mini-Vertrag, Core Treaty oder Vertrag zur Reform des Vertrags von Nizza - Die Wiederbelebung der EU – von der Notwendigkeit eines neuen Großprojekts - Fahrplan zum weiteren Vorgehen
The study of biological interaction networks is a central theme in systems biology. Here, we investigate common as well as differentiating principles of molecular interaction networks associated with different levels of molecular organization. They include metabolic pathway maps, protein-protein interaction networks as well as kinase interaction networks. First, we present an integrated analysis of metabolic pathway maps and protein-protein interaction networks (PIN). It has long been established that successive enzymatic steps are often catalyzed by physically interacting proteins forming permanent or transient multi-enzyme complexes. Inspecting high-throughput PIN data, it has been shown recently that, indeed, enzymes involved in successive reactions are generally more likely to interact than other protein pairs. In this study, we expanded this line of research to include comparisons of the respective underlying network topologies as well as to investigate whether the spatial organization of enzyme interactions correlates with metabolic efficiency. Analyzing yeast data, we detected long-range correlations between shortest paths between proteins in both network types suggesting a mutual correspondence of both network architectures. We discovered that the organizing principles of physical interactions between metabolic enzymes differ from the general PIN of all proteins. While physical interactions between proteins are generally dissortative, enzyme interactions were observed to be assortative. Thus, enzymes frequently interact with other enzymes of similar rather than different degree. Enzymes carrying high flux loads are more likely to physically interact than enzymes with lower metabolic throughput. In particular, enzymes associated with catabolic pathways as well as enzymes involved in the biosynthesis of complex molecules were found to exhibit high degrees of physical clustering. Single proteins were identified that connect major components of the cellular metabolism and hence might be essential for the structural integrity of several biosynthetic systems. Besides metabolic aspects of PINs, we investigated the characteristic topological properties of protein interactions involved in signaling and regulatory functions mediated by kinase interactions. Characteristic topological differences between PINs associated with metabolism, and those describing phosphorylation networks were revealed and shown to reflect the different modes of biological operation of both network types. The construction of phosphorylation networks is based on the identification of specific kinase-target relations including the determination of the actual phosphorylation sites (P-sites). The computational prediction of P-sites as well as the identification of involved kinases still suffers from insufficient accuracies and specificities of the underlying prediction algorithms, and the experimental identification in a genome-scale manner is not (yet) doable. Computational prediction methods have focused primarily on extracting predictive features from the local, one-dimensional sequence information surrounding P-sites. However the recognition of such motifs by the respective kinases is a spatial event. Therefore, we characterized the spatial distributions of amino acid residue types around P-sites and extracted signature 3D-profiles. We then tested the added value of spatial information on the prediction performance. When compared to sequence-only based predictors, a consistent performance gain was obtained. The availability of reliable training data of experimentally determined P-sites is critical for the development of computational prediction methods. As part of this thesis, we provide an assessment of false-positive rates of phosphoproteomic data.
Water shortage is a serious threat for many societies worldwide. In drylands, water management measures like the construction of reservoirs are affected by eroded sediments transported in the rivers. Thus, the capability of assessing water and sediment fluxes at the river basin scale is of vital importance to support management decisions and policy making. This subject was addressed by the DFG-funded SESAM-project (Sediment Export from large Semi-Arid catchments: Measurements and Modelling). As a part of this project, this thesis focuses on (1) the development and implementation of an erosion module for a meso-scale catchment model, (2) the development of upscaling and generalization methods for the parameterization of such model, (3) the execution of measurements to obtain data required for the modelling and (4) the application of the model to different study areas and its evaluation. The research was carried out in two meso-scale dryland catchments in NE-Spain: Ribera Salada (200 km²) and Isábena (450 km²). Adressing objective 1, WASA-SED, a spatially semi-distributed model for water and sediment transport at the meso-scale was developed. The model simulates runoff and erosion processes at the hillslope scale, transport processes of suspended and bedload fluxes in the river reaches, and retention and remobilisation processes of sediments in reservoirs. This thesis introduces the model concept, presents current model applications and discusses its capabilities and limitations. Modelling at larger scales faces the dilemma of describing relevant processes while maintaining a manageable demand for input data and computation time. WASA-SED addresses this challenge by employing an innovative catena-based upscaling approach: the landscape is represented by characteristic toposequences. For deriving these toposequences with regard to multiple attributes (eg. topography, soils, vegetation) the LUMP-algorithm (Landscape Unit Mapping Program) was developed and related to objective 2. It incorporates an algorithm to retrieve representative catenas and their attributes, based on a Digital Elevation Model and supplemental spatial data. These catenas are classified to provide the discretization for the WASA-SED model. For objective 3, water and sediment fluxes were monitored at the catchment outlet of the Isábena and some of its sub-catchments. For sediment yield estimation, the intermittent measurements of suspended sediment concentration (SSC) had to be interpolated. This thesis presents a comparison of traditional sediment rating curves (SRCs), generalized linear models (GLMs) and non-parametric regression using Random Forests (RF) and Quantile Regression Forests (QRF). The observed SSCs are highly variable and range over six orders of magnitude. For these data, traditional SRCs performed poorly, as did GLMs, despite including other relevant process variables (e.g. rainfall intensities, discharge characteristics). RF and QRF proved to be very robust and performed favourably for reproducing sediment dynamics. QRF additionally excels in providing estimates on the accuracy of the predictions. Subsequent analysis showed that most of the sediment was exported during intense storms of late summer. Later floods yielded successively less sediment. Comparing sediment generation to yield at the outlet suggested considerable storage effects within the river channel. Addressing objective 4, the WASA-SED model was parameterized for the two study areas in NE Spain and applied with different foci. For Ribera Salada, the uncalibrated model yielded reasonable results for runoff and sediment. It provided quantitative measures of the change in runoff and sediment yield for different land-uses. Additional land management scenarios were presented and compared to impacts caused by climate change projections. In contrast, the application for the Isábena focussed on exploring the full potential of the model's predictive capabilities. The calibrated model achieved an acceptable performance for the validation period in terms of water and sediment fluxes. The inadequate representation of the lower sub-catchments inflicted considerable reductions on model performance, while results for the headwater catchments showed good agreement despite stark contrasts in sediment yield. In summary, the application of WASA-SED to three catchments proved the model framework to be a practicable multi-scale approach. It successfully links the hillslope to the catchment scale and integrates the three components hillslope, river and reservoir in one model. Thus, it provides a feasible approach for tackling issues of water and sediment yield at the meso-scale. The crucial role of processes like transmission losses and sediment storage in the river has been identified. Further advances can be expected when the representation of connectivity of water and sediment fluxes (intra-hillslope, hillslope-river, intra-river) is refined and input data improves.
Die vorliegende Studie geht der Frage nach, wie im Reichsstift Quedlinburg während der wettinischen Schutzherrschaft (1477/79–1698) die Herrschaft zwischen den fürstlichen Äbtissinnen, dem Stiftskapitel und den Schutzherren bzw. Erbvögten verteilt und organisiert war. Sie fragt danach, wie das Stift verfaßt war. Es wurde versucht, soweit es möglich ist, das Reichsstift Quedlinburg innerhalb eines Zeitraumes von gut 200 Jahren als politisches System zu analysieren. Um diese Frage beantworten zu können, werden in der Hauptsache zwei symbolische Handlungen untersucht: Introduktion und Huldigung. Im ersten Hauptteil werden die Herrschaftsrechte und -grundlagen aufgezeigt, um dann im folgenden Hauptteil Herrschaftsanspruch und -wirklichkeit dieser drei Herrschaftsträger anhand des Zeremonielles zu überprüfen. Zudem interessieren die Fragen, ob es im Untersuchungszeitraum zu Veränderungen der Stiftsverfassung kam, wenn ja, worin diese bestanden, von wem sie ausgegangen und wer davon wie betroffen war. Von Interesse ist ebenso der Zugriff der untersuchten Akteure auf die Stiftsuntertanen, deren Wahrnehmung von Herrschaft und wie sich diese ihnen präsentierte.
Inhalt: - (Nicht-)Belastung deutsch-polnischer Beziehungen - Die Schröder-Erklärung - ...und ihre unterschiedlichen Interpretationen - Eine Frage der Konventionen? - Eine Frage der Gerechtigkeit! - Keine endgültige Antwort - Der polnische Reparationsverzicht von 1953 - Eine rechtsungültige Willenserklärung - ... und ihr protokollarischer Beweis - Ein Posener Vorschlag