Dissertation
Filtern
Erscheinungsjahr
Dokumenttyp
- Dissertation (249) (entfernen)
Sprache
- Englisch (249) (entfernen)
Schlagworte
- Pestizid (6)
- Pflanzenschutzmittel (5)
- Landwirtschaft (4)
- Software Engineering (4)
- ecotoxicology (4)
- Biodiversität (3)
- Bodenchemie (3)
- Insektizid (3)
- Nanopartikel (3)
- Pesticides (3)
- Risikoanalyse (3)
- Systematik (3)
- Umweltpsychologie (3)
- model-based (3)
- risk assessment (3)
- soil organic matter (3)
- Abduktion <Logik> (2)
- Abwasserreinigung (2)
- Agriculture (2)
- Anpassung (2)
- Araneae (2)
- Bestäubung (2)
- Biodiversity (2)
- Diffusion (2)
- Ecotoxicology (2)
- Emissionen (2)
- Feldsaum (2)
- GIS (2)
- Genetische Variabilität (2)
- Habitat Fragmentation (2)
- Hydrodynamik (2)
- Kakamega Forest (2)
- Klimawandel (2)
- Kognitive Linguistik (2)
- Maschinelles Lernen (2)
- Modellgetriebene Entwicklung (2)
- Nanoparticles (2)
- Risikobewertung (2)
- Risikomanagement (2)
- Sediment (2)
- Semantic Web (2)
- Sozialpsychologie (2)
- Taxonomie (2)
- Umweltwissenschaften (2)
- Wastewater treatment plants (2)
- agriculture (2)
- aquatic ecotoxicology (2)
- aquatic macrophytes (2)
- decomposition (2)
- diffusion (2)
- eye tracking (2)
- freshwater organisms (2)
- micropollutants (2)
- modelling (2)
- monitoring (2)
- mosquito control (2)
- optimal control (2)
- pesticide (2)
- pesticides (2)
- sorption (2)
- streams (2)
- traits (2)
- wastewater treatment (2)
- Ökosystemdienstleistung (2)
- Ökotoxikologie (2)
- 1H-NMR Relaxometry (1)
- AUTOSAR (1)
- Abbildung <Mathematik> (1)
- Abdrift <Pflanzenbau> (1)
- Absolutismus (1)
- Abwasser (1)
- Abwasserbehandlung (1)
- Acceleration Structures (1)
- Action Recognition (1)
- Action Segmentation (1)
- Ad-hoc-Netz (1)
- Adaptation (1)
- Africa (1)
- Afrika (1)
- Agrochemikalien (1)
- Aktionsart (1)
- Aktiver Wortschatz (1)
- Akzeptanz (1)
- Algorithmische Geometrie (1)
- Amazonia (1)
- Amazonien (1)
- Amphibia (1)
- Anforderung (1)
- Annotation (1)
- Aphid predator (1)
- Aquatic Ecotoxicology (1)
- Aquatic Guidance Document (1)
- Aquatic ecology (1)
- Aquatische Makrophyten (1)
- Aquatisches Ökosystem (1)
- Architektur <Informatik> (1)
- Artificial Neural Networks (1)
- Arzneimittel (1)
- Arzneistoffe (1)
- Aspekt <Linguistik> (1)
- Auchenorrhyncha (1)
- Auditing (1)
- Augenbewegung (1)
- Ausbreitung (1)
- Auslese (1)
- Auswahl (1)
- Automotive Systems (1)
- Autoritarismus (1)
- BPMN (1)
- Basic psychological needs (1)
- Bayes-Netz (1)
- Bayesian Networks (1)
- Beaconless (1)
- Bedrohte Tiere (1)
- Bees (1)
- Befahrbarkeit (1)
- Belebtschlamm (1)
- Benetzung (1)
- Benutzerverhalten (1)
- Beruflicher Kontakt (1)
- Beschichtung (1)
- Bestäuber (1)
- Beta-Blocker (1)
- Beta-Diversität (1)
- Bewertungskriterien (1)
- Bienen <Familie> (1)
- Bildsegmentierung (1)
- Bildverarbeitung (1)
- Bilingualer Unterricht (1)
- Binnengewässer (1)
- Bioassay (1)
- Biohydrogel (1)
- Biopolymere (1)
- Biotransformation (1)
- Biozide (1)
- Bipartiter Graph (1)
- Blickbewegung (1)
- Boden (1)
- Bodenphysik (1)
- Bodenwasser (1)
- Bodenökologie (1)
- Bombina variegata (1)
- Budongo Forest (1)
- Business English (1)
- Business Rule Bases, Inconsistency Measurement (1)
- Butterflies (1)
- Bärlappe (1)
- CLIL (1)
- CSCW (1)
- Calcium (1)
- Carry-over effects (1)
- Cashew-Sektor (1)
- Cations (1)
- Cheilolejeunea ; continental tropical Africa ; rainforest (1)
- Chemische Abwasserreinigung (1)
- Chironomus riparius (1)
- Chromatographie (1)
- Climate (1)
- Climate anxiety (1)
- Climate change (1)
- Climate denial (1)
- Cloud Point Extraction (1)
- Clustering coefficient (1)
- Cognitive functions (1)
- Coleoptera (1)
- Collaboration (1)
- Communication Networks (1)
- Computational Toxicology (1)
- Computer Graphics (1)
- Computer Security (1)
- Computer Vision (1)
- Computer assisted communication (1)
- Computersicherheit (1)
- Conceptual Metaphor Theory (1)
- Connected Vehicles (1)
- Conservation (1)
- Consumer behaviour (1)
- Consumption renunciation (1)
- Content and Language Integrated Learning (1)
- Content and Language Integrated Learning (CLIL) (1)
- Crayfish (1)
- Crayfish plague (1)
- Curriculum (1)
- DRIFTS (1)
- Daphnia (1)
- Daphnia longispina (1)
- Daphnia longispina complex (1)
- Daphnia longispina-Komplex (1)
- Data Mining (1)
- Data compression (1)
- Data protection (1)
- Datenkompression (1)
- Datenschutz (1)
- Decision-support (1)
- Decodierung (1)
- Deduktion (1)
- Deep Metric Learning (1)
- Demographie (1)
- Demography (1)
- Densimetric Measurement (1)
- Depth Profile (1)
- Design Science Research (1)
- Destiny (1)
- Diagnose (1)
- Diagnosekriterien (1)
- Diagnoseunterstützung (1)
- Diagnosis (1)
- Diagnosis assistance (1)
- Dichtemessung (1)
- Differentia Scanning Calorimetry (1)
- Differential scanning calorimetry (1)
- Diffuse Quellen (1)
- Digitalisation (1)
- Digitalisierung (1)
- Dimension 3 (1)
- Distributed Algorithm (1)
- Distributed Environments (1)
- Documents (1)
- Dracaena (1)
- Drahtloses Sensorsystem (1)
- Drahtloses vermachtes Netz (1)
- Drainagegräben (1)
- Dredging (1)
- Driver Assistance Systems (1)
- Düngemittel (1)
- E-Participation (1)
- East Africa (1)
- Ebener Graph (1)
- Ebullition (1)
- Economic potential (1)
- Ecosystem service (1)
- Ecotoxicity (1)
- Eddy-covariance (1)
- Edelkrebs (1)
- Einstellung (1)
- Einstellungen gegenüber bestimmten Filmeigenschaften (1)
- Ekel (1)
- Elastic net (1)
- Elektronenmikroskopie (1)
- Elevation gradient (1)
- Emission (1)
- Empirical Research (1)
- Empirical Studies (1)
- Employee Behavior (1)
- Endangerment (1)
- Endokrine Regulation (1)
- Energiefluss (1)
- Energy fluxes (1)
- Englisch (1)
- Enhanced Representation (1)
- Enterprise Architecture Framework (1)
- Entrepreneurship Education (1)
- Entrepreneurship Experience and Extra-curricular Activity (1)
- Entscheidungsunterstützung (1)
- Environmental Risk Assessment (1)
- Environmental factors (1)
- Environmental organic chemistry (1)
- Environmental psychology (1)
- Environmental samples (1)
- Epiphyten (1)
- Erzieher (1)
- Erzieherin (1)
- Evacuation modeling (1)
- Evidence-based Psychotherapy (1)
- Eye Tracking (1)
- Eyetracking (1)
- FTIR (1)
- Fahrzeug (1)
- Farnpflanzen (1)
- Fast-slow continuum (1)
- Fault Trees (1)
- Fehlerbaum (1)
- Felis catus (1)
- Felis silvestris domestica (1)
- Ferns (1)
- Feuchtgebiet (1)
- Filmbewertung (1)
- Fischgewebe (1)
- Fledermäuse (1)
- Flesch-Reading-Ease Index (1)
- Fließgewässer (1)
- Flow decomposition (1)
- Foliicolous lichens (1)
- Food (1)
- Formal Methods (1)
- Formale Methoden (1)
- Formale Ontologie (1)
- Fotoauswahl (1)
- Fractionation (1)
- Fragebeantwortung (1)
- Freeze Coring (1)
- Fremdsprachendidaktik (1)
- Fremdsprachenunterricht (1)
- Fungicides (1)
- Fungizid (1)
- Fuzzy-Logik (1)
- Fächerkanon (1)
- GDPR (1)
- GRAF1 (1)
- Galerucinae (1)
- Gamification (1)
- Gammarus fossarum (1)
- Gangart (1)
- Ganzzahlige Optimierung (1)
- Gas storage capacity (1)
- Gasblasen (1)
- GazeTheWeb (1)
- Gefrierkernverfahren (1)
- Gefrierpunktserniedrigung (1)
- Gefährdung (1)
- Gefäßanalyse (1)
- Gel effect (1)
- Gelbbauchunke (1)
- Gelände (1)
- Gemischt-ganzzahlige Optimierung (1)
- Genetic diversity (1)
- Genetics (1)
- Genetik (1)
- Genetischer Fingerabdruck (1)
- Geographic routing (1)
- Geoinformationssystem (1)
- Geometric spanner (1)
- Geowissenschaften (1)
- Gerichteter Graph (1)
- Geschlecht (1)
- Gewässerqualität (1)
- Gewässerökologie (1)
- Glasumwandlung (1)
- Glasübergang (1)
- Globale Wertschöpfungsketten (1)
- Graph (1)
- Graph theory (1)
- Graphentheorie (1)
- Graphik-Hardware (1)
- Graphische Benutzeroberfläche (1)
- Grounded Theory (1)
- Grundbedürfnis (1)
- Gruppenarbeit (1)
- Größenfraktionierung (1)
- Grünlandbewirtschaftung (1)
- Gut content analysis (1)
- Habitat loss (1)
- Habitat networks (1)
- Habitatfragmentierung (1)
- Habitatsverlust (1)
- Hard and Soft News (1)
- Hauskatze (1)
- Hedonic (1)
- Hedonisch (1)
- Herbizid (1)
- Herzrate (1)
- Hindernis (1)
- Human Disturbance (1)
- Human-Computer Interaction (1)
- Humus (1)
- Hyaluronan (1)
- Hyaluronsäure (1)
- Hydratation (1)
- Hydration (1)
- Hydrodynamics (1)
- Hydrogel (1)
- Hydrophobie (1)
- IAT (1)
- ICM (1)
- ICP-MS (1)
- IPT (1)
- IT-Security (1)
- Imitation Learning (1)
- Implicit Association Test (1)
- Industriepolitik (1)
- Information Centric Networking (1)
- Information Retrieval (1)
- Innerbetriebliche Kooperation (1)
- Insecticide (1)
- Instructed Second Language Acquisition (1)
- Integrated Model (1)
- Interaktion (1)
- Interaktionseffekt (1)
- Intergruppenprozesse (1)
- Internationale Organisationen (1)
- Interparticulate hydrogel swelling (1)
- Java (1)
- Journalismusforschung (1)
- Justification (1)
- Kalkmagerrasen (1)
- Kanalcodierung (1)
- Kantenbewerteter Graph (1)
- Kation-Brücken (1)
- Kationen (1)
- Katze (1)
- Kenya (1)
- Klassifikation (1)
- Klima (1)
- Knowledge (1)
- Knowledge Graphs (1)
- Kognitive Entwicklung (1)
- Kohlenstoffkreislauf (1)
- Kohlenstoffschichten (1)
- Kollaboration (1)
- Kollektivismus (1)
- Kolloid (1)
- Kolloide (1)
- Kolloids (1)
- Komplexität / Algorithmus (1)
- Konjugation (1)
- Konkurrenz (1)
- Konsistenz. Psychologie (1)
- Konsumentenverhalten (1)
- Konsumverzicht (1)
- Kontaktwinkel (1)
- Krebspest (1)
- Kriterium (1)
- Kryo (1)
- Körperliche Aktivität (1)
- Künstliche Intelligenz (1)
- Künstliche Neuronale Netze (1)
- L2 writers (1)
- Lake Kinneret (1)
- Lake Naivasha (1)
- Lake Wamala (1)
- Lakes (1)
- Landscape ecology (1)
- Landschaftskartierung (1)
- Landschaftsökologie (1)
- Langlebigkeit (1)
- Laser (1)
- Lasso (1)
- Last-year students (1)
- Latent Negative (1)
- Laufen (1)
- Lebenslanges Lernen (1)
- Lebensmittel (1)
- Lebensstandard (1)
- Lehrerbildung (1)
- Lehrerkompetenzen (1)
- Leichte Sprache (1)
- Leugnung (1)
- Life history (1)
- Limnologie (1)
- Limnology (1)
- Limology (1)
- Line Space (1)
- Linguistic Requirements (1)
- Link Prediction (1)
- Loans (1)
- Local algorithm (1)
- Logischer Schluss (1)
- Longevity (1)
- Lurche (1)
- Lycophytes (1)
- Magnetis (1)
- Maifisch (1)
- Makrophyten (1)
- Mapping <Mathematics> (1)
- Mass-Spektrometrie (1)
- Mathematical optimisation (1)
- Mathematik (1)
- Maßtheorie (1)
- Measure-theory (1)
- Meiofauna (1)
- Mensch-Maschine-Interaktion (1)
- Mesofauna (1)
- Metalle/Matalloide (1)
- Metalloids (1)
- Metals (1)
- Metals/metalloids (1)
- Metamodel (1)
- Metapher (1)
- Metapopulation dynamics (1)
- Metapopulationsdynamiken (1)
- Methan (1)
- Methane emissions (1)
- Methode (1)
- Microfinance (1)
- Microfinance institutions (1)
- Microplastics (1)
- Micropollutants (1)
- Mikrofinanzierung (1)
- Mikroplastik (1)
- Mikrosatelliten-DNA (1)
- Mikroverunreinigung (1)
- Minderung (1)
- Minimalschnitt (1)
- Mining (1)
- Mixed integer programming (1)
- Mixed methods (1)
- Mixture Toxicity (1)
- Monitoring (1)
- Monolepta (1)
- Mosambik (1)
- Movie evaluation criteria (1)
- Mucilage (1)
- Multiagentensysteme (1)
- Multimodal Action Recognition (1)
- Multimodal Medical Image Analysis Cochlea Spine Non-rigid Registration Segmentation ITK VTK 3D Slicer CT MRI CBCT (1)
- Multiple Object Tracking (1)
- Multivariable Statistik (1)
- NMR relaxometry (1)
- NMR-Spektroskopie (1)
- Nachbarschaftsgraph (1)
- Nachtfalter (1)
- Nachtschmetterlinge (1)
- Named Function Networking (1)
- Nanoröhren (1)
- Nassbaggerung (1)
- Nationalismus (1)
- Naturschutzgenetik (1)
- Naturschutzmanagement (1)
- Natürliche Schädlingskontrolle (1)
- Natürliches organisches Material (1)
- Near-surface turbulence (1)
- Network robustness (1)
- Networks (1)
- Netzwerk (1)
- Netzwerkrobustheit (1)
- Netzwerktopologie (1)
- Neuroactive chemicals (1)
- Nicht-Ziel-Pflanzen (1)
- Non-freezing water (1)
- Nuclear Magnetic R (1)
- Nutzererleben (1)
- Nyungwe National Park (1)
- Nährstoffverfügbarkeit (1)
- Nützlinge (1)
- OCB (1)
- OWL <Informatik> (1)
- Oberflächen-Runoff (1)
- Oberflächeneigenschaft (1)
- Oberflächenveredelung (1)
- Oligomer (1)
- One-Shot Action Recognition (1)
- Online grocery shopping (1)
- Online-Lebensmittelhandel (1)
- Ontologie <Wissensverarbeitung> (1)
- Ontology (1)
- Open Content (1)
- Open Source (1)
- Optimierung (1)
- Optimization (1)
- Organische Bodensubstanz (1)
- Oriental region (1)
- Ostafrika (1)
- Osteocephalus (1)
- Ozon (1)
- Ozonisierung (1)
- Parteienkommunikation (1)
- Passiver Wortschatz (1)
- Perfect (1)
- Perfekt (1)
- Personality (1)
- Persönlichkeit (1)
- Pestizide (1)
- Petri Nets (1)
- Petri-Netz (1)
- Pflanzen (1)
- Pharmaceuticals (1)
- Pharmakokinetik (1)
- Phosphorsäureester (1)
- Photographie (1)
- Phylogeographie (1)
- Physik (1)
- Placement Strategies (1)
- Planar graphs (1)
- Plant Communities (1)
- Plant protection products (1)
- Plastic mulching (1)
- Plasticization; Glass transition (1)
- Plastifizieren (1)
- Plastifizierung (1)
- Policy Language (1)
- Politische Ökonomie (1)
- Pollinators (1)
- Pollution (1)
- Polysaccharide (1)
- Polysaccharides (1)
- Populationsgenetik (1)
- Pore Water (1)
- Pragmatic (1)
- Pragmatisch (1)
- Predictive Model (1)
- Present Perfect (1)
- Pro-environmental behaviour change (1)
- Proactive Caching (1)
- Einbringen (1)
- Process Quality (1)
- Product choice (1)
- Produktbewertung (1)
- Produktentscheidung (1)
- Produktwahl (1)
- Propagation (1)
- Prosoziales Verhalten (1)
- Proteinstrukturanalyse (1)
- Provenance (1)
- Prozessqualität (1)
- Prädikatenlogik (1)
- Präposition (1)
- Präsentisches Perfekt (1)
- Pteris (1)
- Py-GC/MS (1)
- Pyrethroide (1)
- Pädagogik (1)
- Quasi unit disk graph (1)
- Random Finite Sets (1)
- Random Forest (1)
- Raupe (1)
- Raytracing (1)
- Reactive algorithm (1)
- Rechtfertigung (1)
- Rechtfertigung <Philosophie> (1)
- Recovery (1)
- Reference Model (1)
- Referenzrahmen (1)
- Regenwald (1)
- Regenwald ; Afrika ; Cheilolejeunea (1)
- Regionenlabeling (1)
- Rehabilitation (1)
- Religiosität (1)
- Renewable energy (1)
- Reproduktion (1)
- Reservoir Sedimentation (1)
- Reservoirs (1)
- Resource Governance (1)
- Revision (1)
- Rezeptionsforschung (1)
- Rhein (1)
- Rheinland-Pfalz (1)
- Rheometry (1)
- Rhineland-Palatinate (1)
- Rhizosphere (1)
- Right-wing ideology (1)
- Risikoabschätzung (1)
- Risikominimierung (1)
- Risk assessment (1)
- Roboter (1)
- Routing (1)
- Ruscaceae (1)
- Russia (1)
- Räuber (1)
- Rückverfolgbarkeit (1)
- SOA (1)
- SPEAR (1)
- Salinisation (1)
- Satelliten-DNS (1)
- Saving (1)
- Saving and credit cooperatives (SACCOs) (1)
- Schadstoffbelastung (1)
- Schadstoffkonzentration (1)
- Schizophrenie (1)
- Schlussfolgern (1)
- Schreiben (1)
- Schreibtechnik (1)
- Schulden (1)
- Schwebstoffe (1)
- Schwermetalle (1)
- Schädlingskontrolle (1)
- Security Requirements (1)
- Sediment Water Interface (1)
- Sediment-Water-Interfaces (1)
- See (1)
- Selbstbeobachtung (1)
- Selbstbeschädigung (1)
- Selbsteinschaetzung (1)
- Selbstregulation (1)
- Self-determination theory (1)
- Semantic Data (1)
- Semantic Web Data (1)
- Serviceorientierte Architektur (1)
- Sexuelle Orientierung (1)
- Size-fractionation (1)
- Skalenkonstruktion (1)
- Skalenvalidierung (1)
- Skalierungsmodelle (1)
- Social Cognitive Career Theory (1)
- Social Entrepreneurship in Vietnam (1)
- Social identity theory (1)
- Socio-ecological transformation (1)
- Socio-economic development (1)
- Software Language (1)
- Software Technology (1)
- Softwarearchitektur (1)
- Soil physics (1)
- Soil structural stability (1)
- Sorption (1)
- Southern Amazonia (1)
- Sozial-ökologische Transformation (1)
- Soziale Identität (1)
- Soziale Wahrnehmung (1)
- Soziales Netzwerk (1)
- Sparen (1)
- Spear (1)
- Speciation (1)
- Species turnover (1)
- Spiralcurriculum (1)
- Sprechweise (1)
- Standard of living (1)
- Staubewässerung (1)
- Staugeregelte Flüsse (1)
- Stausee (1)
- Stauseeverlandung (1)
- Stechmücke (1)
- Stechmücken-Kontrolle (1)
- Stereotyp (1)
- Stereotype Content Model (1)
- Stimme (1)
- Stimmungsveränderung (1)
- Straßenzustand (1)
- Structural Equation Modeling (1)
- Structural Validity (1)
- Strukturelle Validität (1)
- Sufficiency (1)
- Sufficiency orientation (1)
- Suffizienz (1)
- Suffizienzorientierung (1)
- Surface Science (1)
- Sustainability (1)
- Systematics (1)
- Säugetiere (1)
- Südafrika (1)
- Süßwasserhaushalt (1)
- Taxonomy (1)
- Technical potential (1)
- Technologischer Raum (1)
- Tempus (1)
- Tense (1)
- Theorembeweiser (1)
- Time (1)
- Titandioxid-Nanopartikeln (1)
- Torf (1)
- Toxicological characterization (1)
- Toxicology (1)
- Toxikologische Bewertung (1)
- Toxizität (1)
- Transfer coefficients (1)
- Transformation products (1)
- Transformationsprodukte (1)
- Tropfenform (1)
- Tropical rainforest (1)
- Tropischer Regenwald (1)
- Turbulence (1)
- Turbulenz (1)
- Type System (1)
- Type system (1)
- UML (1)
- Umkehrosmose (1)
- Umwelt (1)
- Umweltchemikalie (1)
- Umweltproben (1)
- Umwelttoxikologie (1)
- Umweltverhaltensänderung (1)
- Umweltverschmutzung (1)
- Unit disk graph (1)
- Unlink Prediction (1)
- Unsicheres Schließen (1)
- Unterrichtsforschung (1)
- Unterrichtsqualität (1)
- Untersuchung (1)
- Unterwasserwelt (1)
- User experience (1)
- VIACOBI (1)
- Variabilität (1)
- Vascular analysis (1)
- Vegetation (1)
- Verb (1)
- Verbal Aspect (1)
- Verbraucherverhalten (1)
- Vergangenheitstempus (1)
- Verhandlung (1)
- Verifikation (1)
- Vermeidung (1)
- Versalzung (1)
- Verteilter Algorithmus (1)
- Verteilung (1)
- Visual Stimuli Discovery (1)
- Visualisierung von Verbformen (1)
- Vocabulary (1)
- Vokabellernen (1)
- Volumen-Rendering (1)
- Vorschulkind (1)
- Vulnerability (1)
- WCET (1)
- Wachstumsregler (1)
- Wahlen zum europäischen Parlament (EU-Wahlen) (1)
- Wahrscheinlichkeit (1)
- Wahrscheinlichkeitsrechnung (1)
- Wanderfische (1)
- Wasser-Sediment-Grenzschichten (1)
- Wasserverschmutzung (1)
- Wastewater (1)
- Water Management (1)
- Water quality (1)
- Wavelet (1)
- Web (1)
- Web Science (1)
- Weinbau (1)
- Weltkultur (1)
- Wiederbesiedlung (1)
- Wild pollinator (1)
- Wildbienen (1)
- Wildtiere (1)
- Wirbellose (1)
- Wireless sensor network (1)
- Wirtschaft (1)
- Wirtschaftsenglisch (1)
- Wissensmanagement (1)
- World Wide Web 2.0 (1)
- Wortschatz (1)
- Yellow-bellied toad (1)
- Zeit (1)
- Zikaden (1)
- Zoologie (1)
- Zoology (1)
- Zooplankton (1)
- Zuckmücken (1)
- Zusammenhängender Graph (1)
- absolutism (1)
- acceptance (1)
- activated sludge (1)
- adaptive GUI Design (1)
- adjoint functions (1)
- advanced wastewater treatment (1)
- agricultural intensification (1)
- agroecosystems (1)
- amorphous hydrogenated carbon layer (1)
- amphibians (1)
- analytics (1)
- anthropogenic disturbance (1)
- aquatic environment (1)
- aquatic invertebrates (1)
- attitudes towards specific movie features (1)
- authoritarianism (1)
- automated theorem prover (1)
- automatic behavioral cues (1)
- bats (1)
- behavior change (1)
- behavioural ecology (1)
- belief in just world (1)
- beneficial insects (1)
- benthic oxygen fluxes (1)
- biocide (1)
- biocides (1)
- biodiversity conservation (1)
- biofiltration (1)
- bioindicator (1)
- biological degradation (1)
- biologischer Abbau (1)
- biotransformation (1)
- bioturbation (1)
- bribery (1)
- business intelligence (1)
- carbon hybridisation (1)
- cation bridges (1)
- cation-bridges (CaB) (1)
- chalk grassland (1)
- change (1)
- chemical force microscopy (1)
- chemical risk assessment (1)
- chironomids (1)
- classification (1)
- clonal diversity (1)
- cognitive development (1)
- cognitive linguistic approach (1)
- collaboration (1)
- collectivism (1)
- colloid (1)
- competition (1)
- concurrency (1)
- conflict detection (1)
- conservation genetics (1)
- construction materials (1)
- contact angle (1)
- contemporary detective fiction (1)
- cooperation (1)
- corrosion protection (1)
- corrosion resistance (1)
- covid-19 (1)
- criminal victimization (1)
- critical section (1)
- crop pollination (1)
- cross-linking (1)
- cryo-electron microscopy (1)
- cultural landscape (1)
- data mining (1)
- data protection (1)
- decision support tool (1)
- deductive (1)
- dengue (1)
- description logic (1)
- digital transformation (1)
- disabled detective (1)
- disabled masculinity (1)
- disgust sensitivity (1)
- distribution (1)
- disturbance (1)
- dry inland waters (1)
- ebullition (1)
- ecological risk management (1)
- ecology (1)
- ecosystem functioning (1)
- ecosystem services (1)
- ecotoxicity (1)
- eddy correlation (1)
- educational alliance (1)
- effect assessment (1)
- effect-directed analysis (1)
- emerging micropollutants (1)
- empirische Untersuchung (1)
- endocrine disrupting chemicals (1)
- endokrine Regulation (1)
- energetics (1)
- english prepositions (1)
- enterprise collaboration platforms (1)
- enterprise collaboration systems (1)
- environmental compatibility (1)
- environmental psychology (1)
- environmental risk assessment (1)
- environmental surfaces (1)
- epidemiology (1)
- epoxide (1)
- erweiterte Abwasserbehandlung (1)
- evolution (1)
- expansion (1)
- fairness (1)
- feedback (1)
- field experiment (1)
- field margin (1)
- fish tissues (1)
- floral resources (1)
- flows over time (1)
- fluid disturbances (1)
- focused feedback (1)
- folksonomies (1)
- framework (1)
- freshwater ecosystem (1)
- fungicide (1)
- fungus resistant grapevine (1)
- futex (1)
- gait (1)
- galvanic anodes (1)
- gender (1)
- genotyping error (1)
- giftedness (1)
- glass transition (1)
- global carbon cycle (1)
- grade (1)
- grassland irrigation (1)
- greenhouse gases (1)
- groundwater remediation (1)
- groupwork (1)
- hazard prediction (1)
- heart rate (1)
- high power impulse magnetron sputtering (1)
- humic acid (1)
- hybrid automata (1)
- hybride Automaten (1)
- hydrodynamic chromatography (1)
- hydrodynamische Chromatographie (1)
- hydrophobicity (1)
- immediate priority ceiling protocol (1)
- implicit-explicit consistency (1)
- impounded rivers (1)
- in situ (1)
- information infrastructure (1)
- information retrieval (1)
- insecticide (1)
- interaction (1)
- intergroup contact (1)
- invasive Arten (1)
- invasive species (1)
- invertebrates (1)
- kinematics (1)
- klonale Diversität (1)
- land use (1)
- land use change (1)
- landmarks (1)
- landscape (1)
- landscape complexity (1)
- landscape mapping (1)
- laser induced fluorescence (1)
- leaching (1)
- lead desorption (1)
- leaf beetles (1)
- leafhoppers (1)
- lexical sophistication (1)
- life cycle test (1)
- lifelong learning (1)
- long-living systems (1)
- longitudinal (1)
- macroinvertebrates (1)
- mammals (1)
- masculine disability (1)
- masculine identity (1)
- mathematical Modelling (1)
- mathematische Modellbildung (1)
- measure (1)
- metal-film phase plate (1)
- methane (1)
- microsatellite DNA (1)
- microsatellite analysis (1)
- minimal pruning (1)
- mitigation (1)
- mitigation measures (1)
- mixtures (1)
- modeling (1)
- monitor (1)
- mood change (1)
- multiagent systems (1)
- mutual exclusion (1)
- nanoparticle (1)
- nationalism (1)
- natural language generation (1)
- natural organic matter (1)
- nature conservation (1)
- negotiation (1)
- neuartige Spurenstoffe (1)
- nicht gefrierbares Wasser (1)
- nichtlinearer Zusammenhang (1)
- nichtsuizidale Selbstverletzung (1)
- non-consumptive effects (1)
- non-crop habitats (1)
- non-point source (1)
- non-target effects (1)
- non-target plants (1)
- nternational organizations (1)
- numerical simulation (1)
- off-field habitats (1)
- olive mill wastewater (1)
- optimization (1)
- organic coatings (1)
- organic pollution (1)
- organizational behavior (1)
- organophosphate (1)
- ozonation (1)
- ozonation of beta blockers (1)
- ozone (1)
- ozone reactivity (1)
- pH-Wert (1)
- parameter estimation (1)
- peat (1)
- pelzresistente Rebsorten (1)
- periphyton (1)
- pest control (1)
- pesticide risk assessment (1)
- pharmaceuticals (1)
- photo selection (1)
- physical activity (1)
- plain language (1)
- plant protection products (1)
- planthoppers (1)
- plants (1)
- plastic consumption (1)
- playful learning (1)
- point source (1)
- pollen diet (1)
- pollinator development (1)
- pollinator fitness (1)
- pollution (1)
- polyurethane (1)
- population genetics (1)
- predation (1)
- predictability (1)
- preschool children (1)
- priority effects (1)
- priority-Effekte (1)
- privacy by design (1)
- privacy impact assessment (1)
- probabilistic (1)
- prosocial behavior (1)
- prosoziale Gruppennorm (1)
- punishment goals (1)
- pyrethroids (1)
- question answering (1)
- rainforest (1)
- reasoning (1)
- recolonisation (1)
- region labeling (1)
- relative Prototypikalität (1)
- religiousness (1)
- repellency (1)
- reproduction (1)
- reverse osmosis (1)
- revision (1)
- rocking-phase plate (1)
- running (1)
- runoff (1)
- scaffolded writing (1)
- scale construction (1)
- scale validation (1)
- school attack (1)
- school tier (1)
- science learning (1)
- security (1)
- self-concept (1)
- semantics (1)
- sexual orientation (1)
- silver nanoparticles (1)
- single-particle analysis (1)
- social perception (1)
- software engineering (1)
- soil (1)
- soil aquifer treatment (1)
- soil pH (1)
- soil solution (1)
- soil water repellency (1)
- soils (1)
- sparsity (1)
- spatial Fuzzy Logic (1)
- spatial and temporal varibility (1)
- speech (1)
- spray-drift (1)
- stereotypes (1)
- stream (1)
- stream mesocosm (1)
- student misbehavior (1)
- student writing (1)
- surface characteristics (1)
- suspended particle matter (1)
- swarming (1)
- swimming behaviour (1)
- systematics (1)
- tag recommendation (1)
- task orientation (1)
- teacher beliefs (1)
- teacher education (1)
- teacher motivation (1)
- teacher training (1)
- teaching (1)
- text-picture integration (1)
- thermal analysis (1)
- titanium nitride (1)
- toxicokinetics (1)
- trace organic chemicals (1)
- traceability (1)
- trait-mediated effects (1)
- transformation (1)
- transformation products (1)
- trophic cascades (1)
- uptake (1)
- variational discretization (1)
- vascular plants (1)
- vaskuläre Planzen (1)
- vegetated treatment systems (1)
- verification (1)
- viticulture (1)
- voice (1)
- wastewater treatment plant (1)
- water pollution (1)
- water reuse (1)
- water scarcity (1)
- water treatment (1)
- water-molecule-bridges (WaMB) (1)
- wear resistance (1)
- web 2.0 (1)
- wettability (1)
- wild bees (1)
- wildlife management (1)
- window of opportunity (1)
- world polity (1)
- writing (1)
- zooplankton (1)
- Ästuar (1)
- Ökologie (1)
- Ökosystem (1)
- Ökotoxologie (1)
- Überarbeitung (1)
- Überwachung (1)
Institut
- Fachbereich 7 (73)
- Institut für Informatik (29)
- Institut für Integrierte Naturwissenschaften, Abt. Biologie (23)
- Fachbereich 8 (20)
- Institut für Umweltwissenschaften (19)
- Institute for Web Science and Technologies (11)
- Institut für Computervisualistik (9)
- Institut für Integrierte Naturwissenschaften, Abt. Chemie (9)
- Mathematisches Institut (8)
- Institut für Anglistik und Amerikanistik (7)
- Institut für Integrierte Naturwissenschaften, Abt. Physik (7)
- Institut für Wirtschafts- und Verwaltungsinformatik (6)
- Institut für Integrierte Naturwissenschaften (5)
- Institut für Softwaretechnik (5)
- Fachbereich 6 (4)
- Institut für Management (3)
- Fachbereich 4 (2)
- Arbeitsbereich Allgemeine und Pädagogische Psychologie (1)
- Arbeitsbereich Biopsychologie, Klinische Psychologie und Psychotherapie (1)
- Arbeitsbereich Diagnostik, Differentielle und Persönlichkeitspsychologie, Methodik und Evaluation (1)
- Arbeitsbereich Entwicklungspsychologie und Pädagogische Psychologie (1)
- Arbeitsbereich Sozial- und Wirtschaftspsychologie (1)
- Fachbereich 5 (1)
- Institut für Bildung im Kindes- und Jugendalter (1)
- Institut für Erziehungswissenschaft (1)
- Institut für Integrierte Naturwissenschaften, Abt. Geographie (1)
- Institut für Kommunikationspsychologie und Medienpädagogik (1)
- Institut für Mathematik (1)
- Institut für Musikwissenschaft und Musikpädagogik (1)
- Institut für Sozialwissenschaften (1)
- Institut für fremdsprachliche Philologien (1)
Previous research revealed that teachers hold beliefs about gifted students combining high intellectual ability with deficits in non-cognitive domains, outlined in the so-called disharmony hypothesis. Since teachers’ beliefs about giftedness can influence which students they identify as gifted, the empirical investigation of beliefs is of great practical relevance. This dissertation comprises three research articles that investigated teacher beliefs about gifted students’ characteristics in samples of pre-service teachers using an experimental vignette approach. Chapter I starts with a general introduction into beliefs, and presents the research aims of the present dissertation. The first article (Chapter II) focused on the interaction of beliefs about giftedness and gender in a sample of Australian pre-service teachers and tested if social desirability occurred when using the vignette design. Beside evidence for beliefs in line with the disharmony hypothesis, results revealed typical gender stereotypes. However, beliefs about giftedness appeared not to be gender specific and thus, to be similar for gifted girls and boys. The vignette approach was found to be an adequate design for assessing teacher beliefs. The second article (Chapter III) investigated teacher beliefs and their relationship to motivational orientations for teaching gifted students in a cross-country sample of German and Australian pre-service teachers. Motivational orientations comprise cognitive components (self-efficacy) and affective components (enthusiasm). Findings revealed beliefs in the sense of the disharmony hypothesis for pre-service teachers from both countries. Giftedness when paired with beliefs about high maladjustment was found to be negatively related to teachers’ self-efficacy for teaching gifted students. The third article (Chapter IV) examined the role of teachers’ belief in a just world for the formation of beliefs using a sample of Belgian pre-service teachers. It was found that the stronger pre-service teachers’ belief in a just world was, the more they perceived gifted students’ high intellectual ability as unfair and thus, neutralized that injustice by de-evaluating students’ non-cognitive abilities. In a general discussion (Chapter V), findings of the three articles are combined and reflected. Taken together, the present dissertation showed that teacher beliefs about gifted students’ characteristics are not gender specific, generalizable over countries, negatively related to teacher motivation and can be driven by fairness beliefs.
Invasive species often have a significant impact on the biodiversity of ecosystems and the species native to it. One of the worst invaders worldwide is Aphanomyces astaci, the causative agent of the crayfish plague, an often fatal disease to crayfish species not native to North America. Aphanomyces astaci originates from North America and was introduced to Europe in the midst of the 19th century. Since then, it spread throughout Europe diminishing the European crayfish populations. The overall aim of this thesis was to evaluate the threat that A. astaci still poses to European crayfish species more than 150 years after its introduction to Europe. In the first part of the thesis, crayfish specimens, which are available in the German pet trade, were tested for infections with A. astaci. Around 13% of the tested crayfish were clearly infected with A. astaci. The study demonstrated the potential danger the pet trade poses for biodiversity through the import of alien species and their potential pathogens, in general. In the second part of the thesis, the A. astaci infection prevalence of crayfish species in wild populations in Europe was tested. While the stone crayfish, Austropotamobius torrentium, showed high susceptibility to different haplogroups of A. astaci, the narrow-clawed crayfish, Astacus leptodactylus, was able to survive infections, even by haplogroup B, which is considered to be highly virulent. In the last part of the thesis, A. astaci was traced back to its original distribution area of North America. While the crayfish plague never had such a devastating effect on crayfish in North America as it had in Europe, the reasons for the success of invasive crayfish within North America are not yet fully understood. It is possible that A. astaci increases the invasion success of some crayfish species. Several populations of the rusty crayfish, Orconectes rusticus, in the Midwest of North America were confirmed to be infected with A. astaci and a new genotype was identified, possibly indicating that each crayfish host is vector of a unique A. astaci genotype, even in North America. Overall, the present thesis provides evidence that A. astaci is still a major threat to the crayfish species indigenous to Europe. Crayfish mass mortalities still occur in susceptible crayfish species like A. torrentium even 150 years after the first introduction of A. astaci. While there are some indications for increased resistances through processes of co-evolution, the continuous introduction of crayfish species to Europe threatens to cause new outbreaks of the crayfish plague through the parallel introduction of new, highly virulent A. astaci strains.
Dracaena L. (Ruscaceae) is a predominantly African genus with a smaller centre of diversity in South-East Asia. The taxonomy of the 29 species occurring in Central, East and Southern Africa was revised through phenetic and phylogenetic analyses of the morphology as well as through herbarium, literature and field studies. An infrageneric classification is proposed, in which four sub-genera are recognised for the first time. A taxonomic account for the study area incorporating an identification key, distribution maps and an IUCN Red List assessment is presented. Analysis of Dracaena phytogeography reveals that the Guineo-Congolian centre of endemism is the richest with 21 species while the Maputaland-Pondoland regional mosaic and the Guinea-Congolia/Sudania regional transition zone are the poorest, having only one species each. Investigation of the ecology of Dracaena in the Kakamega Forest, Kenya, shows that it plays an important role in the forest ecology and is an indicator of forest quality.
In the present study the flora and vegetation of Kakamega Forest, an East African rainforest in Western Kenya, was investigated. Kakamega Forest is highly degraded and fragmented and is an ideal model to study the anthropogenic influence on the forest inventory. The main focus was to analyse the influence of human impact on the vascular plant species composition. During five field phases in the years 2001 to 2004 a total of 19 study sites scattered over the whole forest including all fragments were investigated regarding forest structure, species composition and plant communities. The different forest sites were analysed by three different methods, phytosociological relevés, line-transect and with the variable-area transect method. The forest survey revealed about 400 taxa of vascular plant species, among them 112 trees, 62 shrubs, 58 climbers and 114 herbs. Several species are restricted to this forest in Kenya, but only one endemic species, the herb Commelina albiflora, could be discovered. About 15 species were recorded as new for Kenya and probably at least one species is new to science. Kakamega Forest is a unique mixture of Guineo-Congolian and Afromontane floral elements. About one half of the vascular plant species has its origin in the lowland forests of the Congo basin and one third originates from Afromontane habitats. The present study represents the first description of plant communities of Kakamega Forest. An analysis of different forest sites and plantations resulted in 17 different vegetation units. For the mature forest sites eleven plant communities were described. The young succession stage consists of two plant communities. Since the disturbance history and the age of the different plant communities could be estimated, their chronology was also described. An exception are the study sites within the plantations and afforested sites. The four defined vegetation units were not described as plant communities, because they are highly affected by man and do not belong to the natural succession of Kakamega Forest. Nevertheless, the regeneration potential of such forests was investigated. Due to the different succession stages the changing species composition along a disturbance gradient could be analysed. Most of Kakamega Forest consists of middle-aged secondary forest often surrounded by very young secondary forest. A true primary rainforest could not be found due the massive influence by over-exploitation. In all parts of the forest the anthropogenic influence could be observed. The forest develops towards a climax stage, but a 2 Abstract comparison with former surveys shows that the regeneration is much slower than expected. Human impact has to be avoided to allow the forest to develop into a primary-like rainforest. But several climax tree species might be missing anyway, because after the broad logging activities in the past there are not enough seed trees remaining. Species richness was highest in disturbed forest sites. A mixture of pioneer, climax and bushland species could be recorded there. Therefore, a high species richness is not a suitable indicator for forest quality. The proportion of climax species typical for Kakamega Forest would be a better measure. Compared to the main forest block the forest fragments do not lack in diversity as expected due to fragmentation processes. Instead, the only near primary forest could be recorded in Kisere, a northern fragment. The high amount of climax species and the more or less undisturbed forest structure is a result of the strict protection by the Kenya Wildlife Service and due to low logging activities. Differences in species composition between the studied forest sites are either a result of the different logging history or management regime rather than due to different edaphic or climatic conditions.
Due to their confinement to specific host plants or restricted habitat types, Auchenorrhyncha are suitable biological indicators to measure the quality of chalk grassland under different management practices for nature conservation. They can especially be used as a tool to assess the success of restoring chalk grassland on ex-arable land. One objective of this study was to identify the factors which most effectively conserve and enhance biological diversity of existing chalk grasslands or allow the creation of new areas of such species-rich grassland on ex-arable land. A second objective was to link Auchenorrhyncha communities to the different grassland communities occurring on chalk according to the NVC (National Vegetation Classification). Altogether 100 chalk grassland and arable reversion sites were sampled between 1998 and 2002. Some of the arable reversion sites had been under certain grazing or mowing regimes for up to ten years by 2002. Vegetation structure and composition were recorded, and Auchenorrhyncha were sampled three times during the summer of each year using a "vortis" suction sampler. Altogether 110 leafhopper species were recorded during the study. Two of the species, Kelisia occirrega and Psammotettix helvolus, although widespread within the area studied, had not previously been recognized as part of the British fauna. By displaying insect frequency and dominance as it is commonly done for vegetation communities, it was possible to classify preferential and differential species of distinct Auchenorrhyncha communities. The linking of the entomological data with vegetation communities defined by the NVC showed that different vegetation communities were reflected by distinct Auchenorrhyncha communities. Significant differences were observed down to the level of sub-communities. The data revealed a strong positive relationship between the diversity of leafhoppers species and the vegetation height. There was also a positive correlation between the species richness of Auchenorrhyncha and the diversity of plant species. In that context it is remarkable that there was no correlation between vegetation height and botanical diversity. There is a substantial decrease in Auchenorrhyncha species richness from unimproved grassland to improved grassland and arable reversion. The decline of typical chalk grassland and general dry grassland species is especially notable. Consequently, the number of stenotopic Auchenorrhyncha species which are confined to only a few habitat types, are drastically reduced with the improvement of chalk grassland. Improved grassland and arable reversion fields are almost exclusively inhabited by common habitat generalists. The decrease in typical chalk grassland plants due to improvement is mirrored in the decline of Auchenorrhyncha species, which rely monophagously or oligophagously on specific host plants. But even where suitable host plants re-colonize arable reversion sites quickly, there is a considerable delay before leafhoppers follow. That becomes especially obvious with polyphagous leafhoppers like Turrutus socialis or Mocydia crocea, which occur on improved grassland or arable reversion sites only in low frequency and abundance, despite wide appearance or even increased dominance of their host plants. These species can be considered as the most suitable indicators to measure success or failure of long term grassland restoration. A time period of ten years is not sufficient to restore species-rich invertebrate communities on grassland, even if the flora indicates an early success.
Studies have shown that runoff and spray-drift are important sources of nonpoint-source pesticide pollution of surface waters. Owing to this, public concern over the presence of pesticides in surface and ground water has resulted in intensive scientific efforts to find economical, yet environmentally sound solutions to the problem. The primary objective of this research was to assess the effectiveness of vegetated aquatic systems in providing buffering between natural aquatic ecosystems and agricultural landscape following insecticide associated runoff and spray-drift events. The first set of studies were implemented using vegetated agricultural ditches, one in Mississippi, USA, using pyrethroids (bifenthrin, lambda-cyhalothrin) under simulated runoff conditions and the other in the Western Cape, South Africa using the organophosphate insecticide, azinphos-methyl (AZP), under natural runoff and spray-drift conditions. The second set of studies were implemented using constructed wetlands, one in the Western Cape using AZP under natural spray-drift conditions and the other in Mississippi, USA using the organophosphate MeP under simulated runoff conditions. Results from the Mississippi-ditch study indicated that ditch lengths of less than 300 m would be sufficient to mitigate bifenthrin and lambda-cyhalothrin. In addition, data from mass balance calculations determined that the ditch plants were the major sink (generally > 90%) and/or sorption site for the rapid dissipation of the above pyrethroids from the water column. Similarly, results from the ditch study in South Africa showed that a 180 m vegetated system was effective in mitigating AZP after natural spray drift and low flow runoff events. Analytical results from the first wetland study show that the vegetated wetland was more effective than the non-vegetated wetland in reducing loadings of MeP. Mass balance calculations indicated approximately 90% of MeP mass was associated with the plant compartment. Ninety-six hours after the contamination, a significant negative acute effect of contamination on abundances was found in 8 out of the 15 macroinvertebrate species in both wetland systems. Even with these toxic effects, the overall reaction of macroinvertebrates clearly demonstrated that the impact of MeP in the vegetated wetland was considerably lower than in the non-vegetated wetland. Results from the constructed wetland study in South Africa revealed that concentrations of AZP at the inlet of the 134 m wetland system were reduced by 90% at the outlet. Overall, results from all of the studies in this thesis indicate that the presence of the plant compartment was essential for the effective mitigation of insecticide contamination introduced after both simulated and natural runoff or spray-drift events. Finally, both the vegetated agricultural drainage ditch and vegetated constructed wetland systems studied would be effective in mitigating pesticide loadings introduced from either runoff or spray-drift, in turn lowering or eliminating potential pesticide associated toxic effects in receiving aquatic ecosystems. Data produced in this research provide important information to reduce insecticide risk in exposure assessment scenarios. It should be noted that incorporating these types of best management practices (BMPs) will decrease the risk of acute toxicity, but chronic exposure may still be an apparent overall risk.
Probability propagation nets
(2008)
In der vorliegenden Arbeit wird eine Petri-Netz-Repräsentation für die Propagation von Wahrscheinlichkeiten und Evidenzen (Likelihoods) vorgestellt und auf probabilistische Horn-Abduktion sowie Fehlerbäume und Bayes-Netze angewendet. Diese sogenannten Wahrscheinlichkeits-Propagations-Netze (probability propagation nets) machen Propagations-Prozesse transparent, indem sie strukturelle und dynamische Aspekte in einer homogenen Darstellung vereinen. Anhand populärer Beispiele wird verdeutlicht, dass Wahrscheinlichkeits-Propagations-Netze die Propagations-Prozesse - besonders im Hinblick auf die Bayes-Netz-Algorithmik - anschaulich darstellen und gut nachvollziehbar machen, so dass sie sich für die Analyse und Diagnose probabilistischer Modelle eignen. Durch die Repräsentation von Fehlerbäumen mit Wahrscheinlichkeits-Propagations-Netzen können diese Vorzüge auf die Modellierung technischer Systeme übertragen werden.
This thesis is concerned with an issue of considerable importance to the development of revision skills: the role of teacher feedback. Prompted by the concern to develop a model of instruction which will help students write to the best of their capacities, the present study forms a proposal: an interactive model of revision. The study researches whether the kind of feedback proposed in this model is indeed a helpful tool for revision and whether the kind of negotiated revision that occurs is a vehicle for learning. The first section of the thesis reviews different areas of literature which are relevant to the study. More specifically, Chapter 2 presents the historical and theoretical foundations of different writing instructional practices and sheds light on issues concerning the use of the process approach. It also reviews research based on sociocognitive theoretical perspectives in an attempt to delineate the impact of interpersonal or social activity on individual performance and progress. Chapter 3 examines issues associated with the process approach in particular and illustrates how theory and method come together in a process writing classroom. Chapter 4 presents the differences in revising behaviours between experienced and inexperienced writers in both L1 and L2 contexts and the various ways these differences have been justified. It also highlights a number of issues which have been identified as contributing to effective revision. Particular attention is paid to the role that teacher feedback has to play as a means of promoting substantive student revision with an instructional emphasis on fluency, organisation and language. Chapter 5 presents an interactive model of revision, which envisions a communicative exchange between two partners, the student-writer and the teacher-reader, collaborating in order to develop awareness of revision strategies and establish criteria for effective writing. Chapter 6 investigates the epistemological basis of the research and presents a set of research questions and hypotheses, which guided the investigation. Chapter 7 frames the context of the research and details the methods used to collect the data from the study. The study involved 100 Year 7 students in two gymnasia in Koblenz, Germany. During the time of the investigation, the students wrote and revised five tasks. Three of these tasks were revised after receiving teacher feedback, which focused on aspects such as appropriacy and sufficiency of information, organization, coherence and grammatical accuracy. The study investigates the effects of this kind of focused feedback on the students" revisions and explores the relationship between revision and text improvement. Large quantitative and qualitative data sets were generated during the research. The quantitative data was based on the student documents (1000 original and revised drafts) whereas the qualitative data emerged from student questionnaires and seven case studies. Chapter 8 presents descriptions of the data analyses. More specifically, it describes the initial and final coding of the revisions traced in the student documents. Then it focuses on the type of qualitative analysis employed in the case studies in order to investigate the relationship between revision and text improvement. The final section of the chapter describes the questionnaire analysis, which was carried out to investigate attitudes, benefits and constraints from the implementation of the model. Chapter 9 examines the statistical results from the analysis of the students" revisions. More specifically, it explores the revisions made by the students across tasks and the relationships between the features of the teacher feedback and these revisions. The analysis highlights patterns in the development of revision skills and positive correlations of student revisions with features of the teacher feedback. Chapter 10 looks at the descriptive data from the case studies of seven individual student writers. The analysis of this data illustrates how the specific students negotiated the revisions and sheds more light on the relationship between feedback, revision and text improvement. Chapter 11 contains the analysis of the students" answers to the questionnaire, which provide illuminative information about the feedback-related attitudes. In Chapter 12, the thesis reaches its final destination. The journey over the paths of literature exploration, data gathering and data analysis ends with reflections on the messages that emerge from the data analysis. The conclusion reached is that young students can learn how to revise their writing and focused feedback is a viable pedagogic option for teaching revision. In addition to discussing the findings, this final section considers the pedagogical implications for the teaching of writing and suggests possible avenues for further work.
Ziel der vorliegenden Arbeit ist die Erforschung von Einstellungen und prosozialem Verhalten zwischen Arbeitsgruppen aus Sicht der Theorie der sozialen Identität und der Kontakthypothese. Dem Rekategorisierungsmodell von Gaertner und Dovidio (2000) folgend wird angenommen, dass "optimale" Kontaktbedingungen (Allport, 1954) eine gemeinsame organisationale Identität anregen. Diese gemeinsame Identität sollte verschiedene Arbeitsgruppen dazu motivieren, zusammenzuarbeiten und freiwilliges Arbeitsverhalten zu zeigen anstelle von Voreingenommenheiten. Vorhersagen des Rekategorisierungsmodells werden zusätzlich durch Annahmen aus dem Eigengruppen-Projektionsmodell (Mummendey & Wenzel, 1999) und dem Selbstkategorisierungsmodell der Gruppennormen (Terry & Hogg, 1996) ergänzt. Die abgeleiteten Hypothesen werden an einer Stichprobe von N1 = 281 MitarbeiterInnen aus N2 = 49 Abteilungen und den entsprechenden AbteilungsleiterInnen eines deutschen Versandhandelsunternehmens überprüft (Studie 1). Die Ergebnisse zeigen, dass Kontaktbedingungen auf Gruppen- und Personenebene weniger Voreingenommenheit zwischen Arbeitsgruppen, sowie mehr prosoziales Verhalten (d. h. Kooperation und Hilfeverhalten) vorhersagen. Die Repräsentation als gemeinsame Gruppe vermittelt diesen Zusammenhang für die Variablen Bewertung der Fremdgruppe und Kooperation. Dagegen wird der Zusammenhang zwischen gemeinsamer organisationaler Identität und Voreingenommenheit durch die relative Prototypikalität der Abteilung moderiert, wie es das Eigengruppen-Projektionsmodell vorhersagt. Der Effekt einer prosozialen Gruppennorm auf Hilfeverhalten wird durch die Identifikation mit der Arbeitsgruppe moderiert. In einer Längsschnittstudie mit insgesamt N = 57 Mitgliedern studentischer Projektgruppen wird der Befund repliziert, dass Kontakt unter "optimalen" Bedingungen zu mehr prosozialem Verhalten und weniger Voreingenommenheit zwischen organisationalen Gruppen führt. Der Mediationseffekt durch eine gemeinsame Gruppenidentität zeigt sich jedoch in Studie 2 nicht. Die Ergebnisse der ersten Studie lassen vermuten, dass interpersonales Hilfeverhalten besser durch Prädiktoren auf der gleichen Kategorisierungsebene (d. h. Personenebene) vorhergesagt werden kann (vgl. Haslam, 2004). Daher wird die zusätzliche Annahme getroffen, dass Kontakt in einem Kontext, welcher persönliche Identitäten salient macht (d. h. zu Dekategorisierung führt), interpersonales Verhalten besser vorhersagen kann. Dagegen sollte Kontakt in einem Kontext, welcher Gruppenidentitäten salient macht (d. h. zu Kategorisierung führt), intergruppales Verhalten besser vorhersagen können (vgl. Tajfel, 1978). Zusätzliche Daten aus Studie 1 belegen diesen kontextspezifischen Effekt von Kontakt auf interpersonales bzw. intergruppales prosoziales Verhalten. Im letzten Schritt wird das längsschnittliche Kontaktmodell von Pettigrew (1998) untersucht, welches Kontakt in Kontexten, die zu Dekategorisierung, Kategorisierung bzw. Rekategorisierung führen, in einer zeitlichen Abfolge miteinander verbindet. Erste Befunde aus Studie 2 zeigen, dass eine Abfolge der Kategorisierungsprozesse beginnend bei Dekategorisierung über Kategorisierung hin zu Rekategorisierung eine besonders effektive Möglichkeit zur Verbesserung der Kooperation zwischen Gruppen bieten könnte. Zum Abschluss wird ein Kontextspezifisches Kontaktmodell vorgeschlagen, das Befunde aus den beiden vorgestellten Studien integriert und zu weiterer Forschung an prosozialem Verhalten zwischen Arbeitsgruppen anregen soll. Mögliche Mediatoren und Moderatoren werden neben einer Reihe von Implikationen für die Forschung und Praxis diskutiert.
In dieser Dissertation wird eine Verfahrensweise für die formale Spezifikation und Verifikation von Benutzerschnittstellen unter Sicherheitsaspekten vorgestellt. Mit dieser Verfahrensweise können beweisbar sichere Benutzerschnittstellen realisiert werden. Die Arbeit besteht aus drei Teilen. Im ersten Teil wird eine Methodologie für die formale Beschreibung von Mensch-Maschine-Interaktion entwickelt. Im zweiten Teil werden gängige Computersicherheitskonzepte für die Mensch-Maschine-Interaktion angepasst und mit den im ersten Teil entwickelten Methoden formalisiert. Dabei wird ein generisches formales Modell von Mensch-Maschine-Interaktion erstellt. Im dritten Teil wird die Methodologie, die in den ersten beiden Teilen entwickelt wurde, an einem sicheren Email-Client als exemplarischen Anwendungsprogramm demonstriert.