Filtern
Erscheinungsjahr
Dokumenttyp
- Dissertation (257)
- Research Paper (35)
- Bericht (15)
- Bachelorarbeit (14)
- Masterarbeit (14)
- Teil eines Buches (Kapitel) (10)
- Habilitation (7)
- Buch (Monographie) (6)
- Beitrag in Konferenzband (6)
- Diplomarbeit (5)
Sprache
- Englisch (377) (entfernen)
Schlagworte
- Nachhaltigkeit (27)
- Biodiversität (12)
- Export (10)
- Produktivität (10)
- Entrepreneurship (9)
- Sustainability (9)
- Deutschland (8)
- Exports (8)
- productivity (8)
- Germany (7)
- Landwirtschaft (6)
- sustainability (6)
- Ökosystem (6)
- Management (5)
- Versicherung (5)
- biodiversity (5)
- micro data (5)
- Governance (4)
- Personenbezogene Daten (4)
- Tourismus (4)
- Transformation (4)
- Unternehmensgründung (4)
- insurance (4)
- wages (4)
- Ökologie (4)
- Agriculture (3)
- Arzneimittel (3)
- Discrimination (3)
- Diskriminierung (3)
- Energiewende (3)
- Entwicklungsländer (3)
- Forschung und Entwicklung (3)
- Kulturlandschaft (3)
- Negotiation (3)
- Persönlichkeit (3)
- Steuerungsprozesse (3)
- Wirtschaftspsychologie (3)
- ecosystem services (3)
- entrepreneurship (3)
- social-ecological systems (3)
- Ökonomie <Begriff> (3)
- Abwasseranalyse (2)
- Arbeitsmotivation (2)
- Arbeitsproduktivität (2)
- Arbeitspsychologie (2)
- Auslandsaufenthalt (2)
- Auslandsinvestition (2)
- Autonomes Fahren (2)
- Betriebsrat (2)
- Biodegradability (2)
- Biodegradation (2)
- Biodiversity (2)
- Biologische Abbaubarkeit (2)
- Circular Economy (2)
- Depression (2)
- Einkommensverteilung (2)
- Eisenbahn (2)
- Elfter September (2)
- Emission (2)
- Energiepolitik (2)
- Energy Policy (2)
- Ethiopia (2)
- Europäische Union (2)
- Finanzierung (2)
- Geographie (2)
- Gerechtigkeit (2)
- Gesundheitswesen (2)
- Gewerkschaft (2)
- Globalisierung (2)
- Haftpflichtrisiko (2)
- Healthcare (2)
- Humanvermögen (2)
- Interessenverband (2)
- Internationaler Vergleich (2)
- Israel (2)
- Lohn (2)
- Nachhaltige Entwicklung (2)
- New Economic Geography (2)
- New Economy (2)
- Nutzerverhalten (2)
- Personalpolitik (2)
- Peru (2)
- Pestizid (2)
- Pharmaceuticals (2)
- Photolysis (2)
- R&D (2)
- Sediment (2)
- Selbständigkeit (2)
- September 11th (2)
- Städtebau (2)
- Training (2)
- Umweltbezogenes Management (2)
- Umweltpolitik (2)
- Umweltökonomie (2)
- Unternehmen (2)
- Unternehmer (2)
- Verantwortung (2)
- Verhandlung (2)
- Verhandlungsführung (2)
- Vertical Linkages (2)
- Verwaltung (2)
- Vorstand (2)
- Wald (2)
- adjustment costs (2)
- agri-environmental policy (2)
- agro-biodiversity (2)
- congested public inputs (2)
- cultural landscape (2)
- deregulation (2)
- developing countries (2)
- ecosystem management (2)
- exporter wage premium (2)
- foreign direct investment (2)
- heterogeneous firms (2)
- landscape ecology (2)
- natural monopoly (2)
- risk-aversion (2)
- union membership (2)
- Äthiopien (2)
- Öffentliches Gut (2)
- Abbau (1)
- Abwassermarkierungsstoffe (1)
- Abwasserreinigung (1)
- Activated Sludge (1)
- Afghanistan (1)
- African Union (1)
- Agency-Theorie (1)
- Agrarplanung (1)
- Agrarsystem (1)
- Agrarwirtschaft (1)
- Agrarökosystem (1)
- Algenkultur (1)
- Algorithmus (1)
- Altlastsanierung (1)
- Anden (1)
- Anfang (1)
- Anpassungskosten (1)
- Antibiotikum (1)
- Anticancer Drug (1)
- Antriebstechnik (1)
- Aquatic environment (1)
- Arbeitgeber (1)
- Arbeitnehmer (1)
- Arbeitsbedingungen (1)
- Arbeitslosigkeit (1)
- Arbeitsmarkt (1)
- Arbeitsökonomie (1)
- Arctic Atmosphere (1)
- Arktis (1)
- Armut (1)
- Art (1)
- Artenreichtum (1)
- Atmosphäre (1)
- Auditing (1)
- Aufsichtsrat (1)
- Auktion (1)
- Ausfuhrüberschuss (1)
- Auslandsmitarbeiter (1)
- Auslandstätigkeit (1)
- Automobilindustrie (1)
- Bakterien (1)
- Ballungsraum (1)
- Bank (1)
- Bank Bailout (1)
- Bankenkrise (1)
- Bankenrettung (1)
- Banking Crisis (1)
- Baum (1)
- Bee (1)
- Bees (1)
- Benzopyrane (1)
- Berufslaufbahn (1)
- Berufsvorbereitung (1)
- Berufswahl (1)
- Beschäftigung (1)
- Beschäftigungspflicht (1)
- Bestäuber (1)
- Betrieb / Umwelt (1)
- Bevölkerungswachstum (1)
- Bevölkerungsökonomie (1)
- Biene (1)
- Bienen (1)
- Big Data (1)
- Biochar (1)
- Biofilm (1)
- Biologische Abwasserreinigung (1)
- Biologische Landwirtschaft (1)
- Biologischer Landbau (1)
- Biomass burning (1)
- Biotechnologie (1)
- Bondholder Relations (1)
- Brasilien (1)
- Cargo Bike (1)
- China (1)
- Citizen Science (1)
- Civic Engagement (1)
- Climate Simulation (1)
- Coastel environment (1)
- Cognition (1)
- Collaborative Initiative (1)
- Compensation (1)
- Computergestütze Psychotherapie (1)
- Computerspiel (1)
- Congestion (1)
- Consumer Behaviour (1)
- Consumer Protection (1)
- Controlling (1)
- Corporate Bond (1)
- Corporate Disclosure (1)
- Corporate Entrepreneurship (1)
- DSGE model (1)
- Damascus (1)
- Damaskus (1)
- Data Mining (1)
- Datenanalyse (1)
- Decision-Making (1)
- Degradation (1)
- Dekomposition der Ungleichheit (1)
- Deregulierung (1)
- Derivate (1)
- Derivatives (1)
- Deutsche <Bundesrepublik> (1)
- Developing countries (1)
- Developing politics (1)
- Digital Learning (1)
- Digitales Lernen (1)
- Digitalisierung (1)
- Discourse Studies (1)
- Disease Resistance (1)
- Diversität (1)
- Dorf (1)
- Driving Behaviour (1)
- E-Learning (1)
- EU Water Framework Directive (1)
- East Germany (1)
- Eco-effective Products (1)
- Economic behavior (1)
- Economic growth (1)
- Ecosystem services (1)
- Ecuador (1)
- Eductive Stability (1)
- Efficiency (1)
- Effizienz (1)
- Effizienzanalyse (1)
- Egypt (1)
- Eigeninitiative (1)
- Einkommensunterschied (1)
- Einwanderung (1)
- Elektrifizierung (1)
- Elektromobilität (1)
- Emission model (1)
- Emissionsmodell (1)
- Employee Health (1)
- Employee Management (1)
- Ende (1)
- Energie (1)
- Energieeffizienz (1)
- Energiepreis (1)
- Energieweltwirtschaft (1)
- Energy Prices (1)
- Energy Transition (1)
- Entrepeneurship (1)
- Entry (1)
- Entscheidungsprozess (1)
- Entwicklung (1)
- Environmental Communication (1)
- Environmental Monitoring (1)
- Environmental governance (1)
- Erneuerbare Energien (1)
- Ernährungslage (1)
- Error Management (1)
- Erwartung (1)
- Europa (1)
- European Union (1)
- Excludable and Non-excludable Public Goods (1)
- Exit from unemployment (1)
- Export entry (1)
- Export-sales ratio (1)
- Exportverhalten (1)
- Fahrerverhalten (1)
- Familienbetrieb (1)
- Familienunternehmen (1)
- Family Firm (1)
- Fatty Acids (1)
- Fehleranalyse (1)
- Fehlerbehandlung (1)
- Fehlermanagement (1)
- Fehlerverhütung (1)
- Ferntourismus (1)
- Fernunterricht (1)
- Feuchtgebiet (1)
- Financial Reporting (1)
- Financial Stability (1)
- Finanzstabilität (1)
- Fiscal and institutional policy (1)
- Fischerei (1)
- Fiskalpolitik (1)
- Flammschutzmittel (1)
- Flood (1)
- Flow-Shop-Problem (1)
- Flow-Shop-Scheduling (1)
- Fonds (1)
- Food Security (1)
- Forest (1)
- Forschungsevaluation (1)
- Franchising (1)
- Freier Beruf (1)
- Fremdkapital (1)
- Fremdsprachenlernen (1)
- Führung (1)
- Führungskräfte (1)
- Führungspsychologie (1)
- GIS (1)
- Gamification (1)
- Gamifizierung (1)
- Gemeinwohl (1)
- Gender Roles (1)
- Generationengerechtigkeit (1)
- Geoinformationssystem (1)
- German Socio-Economic Panel (1)
- German Time Use Surveys (1)
- German unions (1)
- Geschlechterrollen (1)
- Geschäftsführung (1)
- Gesetzgebung (1)
- Gesundheitspolitik (1)
- Gewerkschaftsmitglied (1)
- Gewässer (1)
- Gewässerbelastung (1)
- Governmental activity (1)
- Graslandschaft (1)
- Growth (1)
- Großbritannien (1)
- Grundschüler (1)
- Harz (1)
- Heide (1)
- Heterogenität (1)
- Hochschulwahl (1)
- Hohe Einkommen (1)
- Holocene (1)
- Human Resource Management (1)
- Human Rights (1)
- Human resource management (1)
- Hydrological tracers (1)
- Ili Delta (1)
- Immunity (1)
- Indien (1)
- Indigenous peoples (1)
- Informatics (1)
- Informatik (1)
- Informationsmanagement (1)
- Insekten (1)
- Institutional Change (1)
- Institutional change (1)
- Institutioneller Wandel (1)
- Insurance (1)
- Integration (1)
- Interdisziplinarität (1)
- Intergenerational justice (1)
- Internationale Organisation (1)
- Internationaler Wettbewerb (1)
- Internationalität (1)
- Internet (1)
- Investition (1)
- Islam (1)
- Islamistic terror (1)
- Java (1)
- Jordan (1)
- Kasachstan (1)
- Kind (1)
- Kleinbauer (1)
- Kleinkredit (1)
- Kleinunternehmen (1)
- Klimamodell (1)
- Klimasimulation (1)
- Klimaänderung (1)
- Kläranlage (1)
- Klärschlamm (1)
- Kognition (1)
- Kollaborative Initiative (1)
- Kommerzialisierung (1)
- Kommunikationstraining (1)
- Konsum (1)
- Konsumentenverhalten (1)
- Konvergenz (1)
- Kostenverteilung (1)
- Kraftfahrtversicherung (1)
- Kraftfahrzeugindustrie (1)
- Krankheitsresistenz (1)
- Kreditkontrolle (1)
- Kreislaufwirtschaft (1)
- Kulturelle Anpassung (1)
- Kulturelle Entwicklung (1)
- Kulturerbe (1)
- Kulturpolitik (1)
- Kulturraum (1)
- Kulturwirtschaft (1)
- Käfer (1)
- Künstliche Intelligenz (1)
- Küstengebiet (1)
- Labor Economics (1)
- Labor market (1)
- Labor productivity (1)
- Landnutzung (1)
- Landschaftsschutz (1)
- Landschaftsökologie (1)
- Lastenfahrrad (1)
- Laufkäfer (1)
- Learning (1)
- Learning Process (1)
- Leasing (1)
- Lebensmittelproduktion (1)
- Lebensraum (1)
- Lebensunterhalt (1)
- Legislation (1)
- Leistungsbewertung (1)
- Lernen (1)
- Lernprozess (1)
- Lernsoftware (1)
- Leverage-Effekt (1)
- Liberal professions (Freie Berufe) (1)
- Lieferketten (1)
- Lineares Regressionsmodell (1)
- Lipids (1)
- Liquiditätsrisiko (1)
- Lobbyismus (1)
- Lohndifferenzierung (1)
- Lohnniveau (1)
- Lokales Suchverfahren (1)
- Luftaustausch (1)
- Luftverschmutzung (1)
- Ländlicher Raum (1)
- Löhne (1)
- Machado/Mata decomposition (1)
- Machine Learning (1)
- Marketing (1)
- Marketing-Mix (1)
- Maschinenbelegungsplanung (1)
- Mediennutzung (1)
- Meereis (1)
- Meerwasser (1)
- Menschenhandel (1)
- Mental Disorder (1)
- Mental Health (1)
- Mercury (1)
- Migrant rights (1)
- Mill, John Stuart (1)
- Mindset (1)
- Mitarbeiterführung (1)
- Mitarbeitergesundheit (1)
- Mittelstand (1)
- Monitoring (1)
- Monopol (1)
- Monopolistic Competition (1)
- Monopolistische Konkurrenz (1)
- Motivation (1)
- Motivationspsychologie (1)
- Nachfolge (1)
- Nachhaltiges Design (1)
- Namibia (1)
- Nanotechnologie (1)
- Nascent entrepreneurs (1)
- Natural Language Processing (1)
- Naturschutz (1)
- Natürliche Ressourcen (1)
- Natürliches Monopol (1)
- Neoinstitutionalismus (1)
- Network Analysis (1)
- Network Data (1)
- Netzwerk (1)
- Netzwerkanalyse (1)
- Netzwerkdaten (1)
- Neue Medien (1)
- Nichtstaatliche Organisation (1)
- Niederschlag (1)
- Non-Governmental Organisation (1)
- Nordatlantik (1)
- Nordseeküste (1)
- Nährstoffmangel (1)
- Older Workers (1)
- Online Behaviour (1)
- Online-Marketing (1)
- Online-Spiel (1)
- Onlineverhalten (1)
- Open Innovation (1)
- Optionsschein (1)
- Organisationswandel (1)
- Ostdeutschland (1)
- Ostsee (1)
- Ozonisierung (1)
- Ozonungsprodukte (1)
- PFCs (1)
- Palaeoclimate (1)
- Paläoklima (1)
- Participation (1)
- Partizipation (1)
- Personalauswahl (1)
- Personalbeurteilung (1)
- Personalentwicklung (1)
- Personalführung (1)
- Personalwesen (1)
- Persönlichkeitsentwicklung (1)
- Pesticide formulation (1)
- Pflanzen (1)
- Pflege (1)
- Philippinen (1)
- Philippines (1)
- Philosophie (1)
- Photodegradation (1)
- Pleistozän (1)
- Polarraum (1)
- Politik (1)
- Politische Verfolgung (1)
- Politisches Handeln (1)
- Population Economics (1)
- Post (1)
- Postal sector (1)
- Postmoderne (1)
- Poverty (1)
- Precipitation (1)
- Preisrisiko (1)
- Prestige (1)
- Product Differentiation (1)
- Product Marketing (1)
- Produktdifferenzierung (1)
- Produktionsplanung (1)
- Produktmarketing (1)
- Prognose (1)
- Prüfungsqualität (1)
- Psychische Gesundheit (1)
- Psychische Störung (1)
- Pupils (1)
- Quartär (1)
- Quaternary (1)
- Quecksilber (1)
- Railway Industry (1)
- Rational Expectations (1)
- Reality (1)
- Recht (1)
- Rechtsvergleich (1)
- Recruting (1)
- Regionalentwicklung (1)
- Regionalism (1)
- Regulierung (1)
- Reihenfolgeplanung (1)
- Reisen (1)
- Reiseveranstalter (1)
- Reiseverhalten (1)
- Religion (1)
- Renaturierung <Ökologie> (1)
- Renewable Energies (1)
- Repräsentation <Politik> (1)
- Research Evaluation (1)
- Research and Development (1)
- Resin (1)
- Restoration <Ecology> (1)
- Retirement (1)
- Risiko (1)
- Risikoanalyse (1)
- Risikoausschluss (1)
- Risikobewertung (1)
- Risikokapital (1)
- Ruhestand (1)
- Rundfunk (1)
- Räumliche Verteilung (1)
- Samen (1)
- Satellit (1)
- Saving (1)
- Schadstoff (1)
- Schlüsselkompetenz (1)
- Schwerbehinderter (1)
- Schädlingsbekämpfung (1)
- Schüler (1)
- Sea Ice (1)
- Selbstdarstellung (1)
- Selbsteinschätzung (1)
- Selbstregulation (1)
- Selbstschutz (1)
- Selbstständiger (1)
- Selbständige (1)
- Simulated Annealing (1)
- Smartphone (1)
- Social entrepreneurship (1)
- Social standards (1)
- Software (1)
- Softwareentwicklung (1)
- Soil quality (1)
- Soziale Integration (1)
- Soziale Medien (1)
- Soziales Engagement (1)
- Soziales System (1)
- Sozioökonomisches Panel (1)
- Space Policy (1)
- Sparen (1)
- Spiel (1)
- Staatstätigkeit (1)
- Stabilität (1)
- Stadtverkehr (1)
- Stickstoffbelastung (1)
- Stochastik (1)
- Stochastische Dominanz (1)
- Strukturfonds (1)
- Städtische Bauplanung (1)
- Sub-Saharan Africa (1)
- Subsaharisches Afrika (1)
- Sustainability Research (1)
- Sustainable Design (1)
- Sustainable Development Goals (1)
- Sustainable Product-Service (1)
- Sustainable development (1)
- Syrien (1)
- São Paulo (1)
- Süßstoff (1)
- Teamführung (1)
- Terrorismus (1)
- Textile Leasing (1)
- Textilien (1)
- Textilindustrie (1)
- Theater (1)
- Thermal energy storage (1)
- Totholz (1)
- Tourism (1)
- Toxicity (1)
- Transaction Cost Theory (1)
- Transaktionskosten (1)
- Transdisciplinarity (1)
- Transdisziplinarität (1)
- Transition Management (1)
- Transitionsmanagement (1)
- Transnational civil society (1)
- Trinkwasser (1)
- Täuschung (1)
- UV photolysis (1)
- Uganda (1)
- Umwelt (1)
- Umweltbelastung (1)
- Umweltbildung (1)
- Umweltgefährdung (1)
- Umweltkommunikation (1)
- Umweltplanung (1)
- Umweltschutz (1)
- Umweltverträglichkeit (1)
- Umweltüberwachung (1)
- University Choice (1)
- Unsicherheit (1)
- Unternehmensbezogene Dienstleistung (1)
- Unternehmenserfolg (1)
- Unternehmensethik (1)
- Unternehmenskultur (1)
- Unternehmensperformance (1)
- Unternehmensplanung (1)
- Unternehmer Einkommensteuerstatistik (1)
- Unternehmertum (1)
- Unternehmerverhalten (1)
- Urban Mobility (1)
- Urban Planning (1)
- User Behaviour (1)
- Vagheit (1)
- Verband der Netzbetreiber (1)
- Verbraucherschutz (1)
- Verbundwirtschaft (1)
- Vereinigte Staaten (1)
- Vereinte Nationen (1)
- Vergütung (1)
- Verhalten (1)
- Verhaltenstherapie (1)
- Verhandlungsergebnis (1)
- Versicherungswert (1)
- Verteilungsgerechtigkeit (1)
- Vertical Differentiation (1)
- Vertical Integration (1)
- Vertikale Bindung (1)
- Vertikale Produktdifferenzierung (1)
- Vertikale Verknüpfungen (1)
- Verwaltungsinformatik (1)
- Verwaltungsreform (1)
- Virtuality (1)
- Vögel (1)
- Wage dispersion (1)
- Waldökosystem (1)
- Warrants (1)
- Waschmittel (1)
- Wasserbehandlung (1)
- Wassermangel (1)
- Wasserqualität (1)
- Wasserverschmutzung (1)
- Wasserwirtschaft (1)
- Wasserzyklus (1)
- Wastewater treatment plant (1)
- Water Pollution (1)
- Water Quality (1)
- Water Recycling (1)
- Water Resources Management (1)
- Water treatment (1)
- Weather Parameter (1)
- Weide (1)
- Weltraum (1)
- Weltraummüll (1)
- Weltraumpolitik (1)
- Werbewirkung (1)
- Werbung (1)
- Wertpapieremission (1)
- West Germany (1)
- Westdeutschland (1)
- Wetter (1)
- Widerstandsfähigkeit (1)
- Windenergie (1)
- Wirtschaftliches Wachstum (1)
- Wirtschaftsbericht (1)
- Wirtschaftskreislauf (1)
- Wirtschaftsprüfung (1)
- Wirtschaftsrecht (1)
- Wirtschaftswachstum (1)
- Wissenschaftsphilosophie (1)
- Wissensmanagement (1)
- Wissensproduktion (1)
- Work Motivation (1)
- Works councils (1)
- World Wide Web 2.0 (1)
- Wärmespeicher (1)
- XML-Standard (1)
- Zahnschmelz (1)
- Zeitbudgetforschung (1)
- Zerfall (1)
- Zugeständnis (1)
- Zuwanderungsrecht (1)
- agglomeration (1)
- agriculture (1)
- agro-ecosystem management (1)
- algal-bacterial culture (1)
- atmosphere (1)
- bacterial composition (1)
- biotechnology (1)
- brownfield redevelopment (1)
- business creation (1)
- business ethics (1)
- business services (1)
- calluna vulgaris (1)
- capital requirements (1)
- career (1)
- career preparation (1)
- challenge (1)
- chance equality (1)
- climate change (1)
- conceptual vagueness (1)
- continuous treatment (1)
- converging institutions (1)
- converging technologies (1)
- credit constraints (1)
- cultural landscapes (1)
- deception (1)
- decline in German unionism (1)
- decomposition (1)
- democratic theory (1)
- disability (1)
- discriminatory-price auction (1)
- dose-response function (1)
- dstributive justice (1)
- dynamic economy-environment interaction (1)
- earnings differential (1)
- ecological economics (1)
- ecological services (1)
- ecological-economic systems (1)
- ecosystem functioning (1)
- ecosystem quality (1)
- emerging pollutants (1)
- employment (1)
- employment quota (1)
- endogenous environmental risk (1)
- energy efficiency (1)
- energy transition (1)
- entrepreneurs (1)
- environmental management (1)
- environmental manager (1)
- environmental risk (1)
- environmental strategy (1)
- exit (1)
- export exit (1)
- exports (1)
- family Law (1)
- farmland birds (1)
- fishery (1)
- forest ecology (1)
- free-riding (1)
- gender studies (1)
- genotoxicity (1)
- global tourism (1)
- globalization (1)
- governance (1)
- health care market (1)
- heathland ecosystems (1)
- human resoure management (1)
- impression management (1)
- infant entrepreneurs (1)
- information management (1)
- insurance value (1)
- integration (1)
- interdisciplinarity (1)
- interest groups (1)
- international comparison (1)
- justice (1)
- knowledge management (1)
- knowledge production function (1)
- labor productivity (1)
- labour productivity (1)
- land-use change (1)
- leadership (1)
- linked employer-employee data (1)
- literature survey (1)
- lobbyism (1)
- management (1)
- management control (1)
- multi-pollutant emissions (1)
- multi-unit auction (1)
- nanotechnologies (1)
- nitrogen deposition (1)
- non-monotonic control (1)
- nutrient limitation (1)
- nutrient removal (1)
- occupational choice (1)
- optimal scale (1)
- ozonation products (1)
- parasitoids (1)
- personality measures (1)
- personnel management (1)
- personnel selection (1)
- pesticides (1)
- philosophy of science (1)
- plant biodiversity (1)
- poverty (1)
- power industry (1)
- psychological aspects (1)
- public good (1)
- public inputs (1)
- quantile regression decomposition (1)
- quantile regressions (1)
- rangelands (1)
- regional growth (1)
- resilience (1)
- response distortion (1)
- responsibility (1)
- seawater (1)
- seed predation (1)
- self-employment (1)
- self-protection (1)
- self-regulation (1)
- social desirability scales (1)
- social sustainability (1)
- spatial distribution (1)
- species diversity (1)
- startup (1)
- stochastic (1)
- stochastic dominance (1)
- stock pollution (1)
- sustainability accounting (1)
- sustainibility (1)
- systemic risks (1)
- temporal trends (1)
- terrorism (1)
- textile supply chain (1)
- tourism future (1)
- training (1)
- transdisciplinarity (1)
- transformation (1)
- transformation products (1)
- travel behavior (1)
- uncertainty (1)
- union density (1)
- venture capital (1)
- viability (1)
- virtual (1)
- wastewater tracers (1)
- wastewater treatment (1)
- water resources management (1)
- wealth distribution (1)
- wetlands (1)
- whole mixture toxicity (1)
- wind energy (1)
- work engagement (1)
- works councils (1)
- Ägypten (1)
- Älterer Arbeitnehmer (1)
- Ökosystemmanagement (1)
- Überschwemmung (1)
- Übervölkerung (1)
- Überzeugung (1)
Institut
- Fakultät Nachhaltigkeit (106)
- Fakultät Wirtschaftswissenschaften (66)
- Frühere Fachbereiche (50)
- Institut für Ökologie (IE) (28)
- Nachhaltigkeitsmgmt./-ökologie (19)
- VWL (15)
- Fakultät Kulturwissenschaften (14)
- Institut für Nachhaltigkeitssteuerung (INSUGO) (14)
- BWL (12)
- Institut für Nachhaltige Chemie und Umweltchemie (INUC) (12)
Maximizing the value from data has become a key challenge for companies as it helps improve operations and decision making, enhances products and services, and, ultimately, leads to new business models. While enterprise architecture (EA) management and modeling have proven their value for IT-related projects, the support of enterprise architecture for data-driven business models (DDBMs) is a rather new and unexplored field. The research group argues that the current understanding of the intersection of data-driven business model innovation and enterprise architecture is incomplete because of five challenges that have not been addressed in existing research: (1) lack of knowledge of how companies design and realize data-driven business models from a process perspective, (2) lack of knowledge on the implementation phase of data-driven business models, (3) lack of knowledge on the potential support enterprise architecture modeling and management can provide to data-driven business model endeavors, (4) lack of knowledge on how enterprise architecture modeling and management support data-driven business model design and realization in practice, (5) lack of knowledge on how to deploy data-driven business models. The researchers address these challenges by examining how enterprise architecture modeling and management can benefit data-driven business model innovation. The mixed-method approach of this thesis draws on a systematic literature review, qualitative empirical research as well as the design science research paradigm. The investigators conducted a systematic literature search on data-driven business models and enterprise architecture. Considering the novelty of data-driven business models for academia and practice, they conducted explorative qualitative research to explain "why" and "how" companies embark on realizing data-driven business models. Throughout these studies, the primary data source was semi-structured interviews. In order to provide an artifact for DDBM innovation, the researchers developed a theory for design and action. The data-driven business model innovation artifact was inductively developed in two design iterations based on the design science paradigm and the design science research framework.
This doctoral thesis contributes to the vibrant discourse on boundary-crossing collaboration in the German teacher education system. It offers theoretical advancements, programmatic guidelines, and empirical findings which advocate for a transdisciplinary perspective. In order to do so, the framing paper critically links persistent challenges and current reform processes in the teacher education system with theoretical foundations and conceptual positions of transdisciplinarity. Against this backdrop, four articles provide further insights on: a) how to expand the prevalent systematic of innovation and transfer approaches (top-down, bottom-up, cooperative) by a transdisciplinary perspective, b) outlining guiding principles for the realization of transdisciplinary collaboration in the context of a boundary-crossing research and development project, c) providing empirical findings on effect relationships between transdisciplinary dimensions of integration characteristics, and d) identifying empirical types of actors based on specific assessment patterns towards these characteristics.
Exploring artful possibilities: a transdisciplinary research on culture, arts and sustainability
(2021)
The texts gathered in this manuscript offer a largely congruent set of insights on the cultural dimension of sustainability and on the important functions of the arts in relation to the cultural dimension of sustainability, not only in society – more particularly in cities – but also more self- reflexively in transdisciplinary sustainability research itself. The introduction paper (original text for the Cumulative Habilitation) presents all the published texts included in the cumulative habilitation manuscript, and discusses the challenges of transdisciplinary research, differentiating two schools of transdisciplinarity (the so-called the ‘ETH’ and ‘CIRET’ approaches) to which the author’s postdoctoral research relates. The four texts in the first part (PART 1 - Culture(s) and Aesthetics of sustainability)articulate the relations between culture and sustainability. They focus on a theoretical dimension of the author’s postdoctoral research that further developed an understanding of “cultures of sustainability” and of “aesthetics of complexity” that was initiated in the author’s PhD, bringing them in a dialogue with other ongoing and emerging discourses about “cultural sustainability” and “queer ecologies”. The four texts in the second part (PART 2 - The Arts in Relation to Culture(s) and Aesthetics of Sustainability) represent the part of the author’s research that constituted a closer examination of specific artistic practices: ecological art, musical practices, and contemporary interdisciplinary arts in urban arts organizations.
The ten texts in the third part (PART 3 - Creative Sustainable Cities) share the insights gained in the parts of the author’s research work that focused on urban cultural and arts-related phenomena in their relationships to urban sustainability. Several of the texts lay out a critique of the “Creative City” and demonstrate an effort to develop an alternative understanding of the Creative City that would deserve to be also named a “Sustainable City”. Later texts share the insights from the author’s co-leading of the “Stadt als Möglichkeitsraum” (“City as Space of Possibilities”) research project (2015-2018).
The nine texts collected in the fourth part (PART 4 - Towards Artful Sustainability Research)reflect how the author’s ongoing research work included a transdisciplinary reflection and development in terms of epistemology and methodology, incorporating increasingly more elements of arts-based research and of phenomenology and integrating them with systems thinking and qualitative social-scientific research. This development brought the author to reflect further upon the imaginaries and research practices of sustainability researchers, and to advocate for an “artistic turn” in sustainability research (including the more specific field of sustainability science).
The conclusion paper (original text for the Cumulative Habilitation) summarizes the insights from all the published texts included in the cumulative habilitation manuscript, and suggests ways to address the transdisciplinary challenges presented in the introduction paper, suggesting ways to articulate the ‘ETH’ and ‘CIRET’ approaches to transdisciplinarity.
This thesis analyses how European merger control law is applied to the energy sector and to which extent its application may facilitate the liberalisation of the electricity, natural gas and petroleum industries so that only these concentrations will be cleared that honour the principles of the liberalisation directives. After having discussed the complex micro- and macro-economic considerations which accompany any concentration of business activities, this thesis discusses the merger control regime of the European Community (EC) so as to establish whether the merger control under either Art. 66 Treaty Establishing the European Coal and Steal Community (ECSCT), the case law under Art. 101 and 102 Treaty on the functioning of the European Union (TFEU) and (Art. 81 and Art. 82 Treaty Establishing the European Economic Community (ECT), as it was introduced by the Commission and reviewed by the CJEU, the original Merger Regulation (MR1989) or the amended Merger Regulation of 1997 (MR1997) or the amended Merger Regulation of 2004 (MR2004) facilitate the liberalisation of European electricity and gas markets. Said liberalisation was introduced by the Internal Electricity Market Directive (IEMD), the Hydrocarbons Licensing Directive and the Internal Gas Market Directive (IGMD). The paper focuses on the contestable idea that regulatory amendments - especially the introduction of third party access by means of the directives - only form a first necessary condition for attaining economic alterations whereas pro-active conduct of the marketers is the second and decisive one in order to increase the competitive performance of the European energy supply industries. The analysis is supported by a second argument which relates closely to the ambivalent nature of concentrations: A concentration may be used to increase the process of market opening and the expansion into new markets by pooling of scarce resources. It may also be used as a retro -active means so as to create national champions, increase barriers to market entry of new competitors, enable cross-subsidisation so as to expand dominant positions on heretofore competitive up- and downstream markets.
Since the early 2000s, ecosystem services strongly gained significance as a research topic. However, the temporal dimension of ecosystem services has not been taken into consideration, although this should be the basis for a sustainable long-term management of ecosystems and their services. Therefore, the author presents three articles in this thesis that deal with temporal aspects of ecosystem services. In two of them she also present a proposal for a framework for the classification of ecosystem services based on their temporal dynamics. In this dissertation she differentiates between two types of temporal aspects, both of which have in common that change takes place over a certain period of time. The concepts of transformation, transition and regime shift are used to describe changes in social or ecological systems as a whole, for example the transformation towards a more sustainable society. The temporal dynamics, on the other hand, relate to the temporal changes in ecosystem services themselves. The first article focuses on how the literature on ecosystem services incorporates social and ecological change. The second and third articles deal with the temporal dynamics of ecosystem services. While the second article presents a preliminary framework for categorizing the temporal dynamics of ecosystem services, the third article uses this framework to test how the temporal dynamics of ecosystem services are represented in the literature. Based on the insights from the three articles, the author concludes that most of the studies on ecosystem services only focus on one point in time. One reason for this is that most studies are conducted over a maximum of a four-year time span which does not allow to monitor dynamics over longer time spans.
Misophonia in the workplace
(2021)
This paper uses the UN’s Sustainable Development Goals’ inclusion of human well-being and disability rights as a base to examine the work experiences of individuals with the syndrome misophonia who have been employed in white-collar office jobs in the Global North, and how these experiences fit into the current discourse on making offices more inclusive and sustainable. It reports on common workplace triggers, coping mechanisms, and the condition’s perceived effects on misophonics, as well as the perceived barriers and carriers to making workplaces more accommodating to those with the condition. A mixed-methods approach was used to address these points. First, a survey was distributed virtually and 203 responses from misophonics who work(ed) in white-collar office jobs in the study region were collected. Next, ten of these survey takers participated in semi-structured, one-on-one interviews, which were then analyzed using qualitative text analysis. The results showed that many misophonics frequently encounter intense triggers (such as mouth sounds) at the office and that self-perceived levels of productivity, well-being, and workplace sociability can be adversely affected. Though opinions on bans of certain behaviors and items and on certain terminology were diverse, there was consensus on desiring more flexible policies, understanding from others, and quiet or private working spaces, including working from home. Lack of misophonia awareness within the general populace, human resources (HR), upper management, and to some degree, the medical community was identified as a persistent barrier to misophonic employees disclosing or asking for reasonable accommodations even when they felt their misophonia was severe, negatively affected them, and there were provisions that could support them. These experiences were similar to those of other invisible conditions and pointed to the need for workplaces striving to be more sustainable and inclusive to adapt their policies and office design decisions.
The worldwide decline of plant and insect species during the last decades has far-reaching consequences for the functionality of ecosystems and their inherent processes. Pollination as one of them is an indispensable ecosystem service for human wellbeing. However, an increasing number of pollinator and plant species are threatened by multiple, interacting, and sometimes synergistic causes that are becoming a growing threat to ecosystem functioning. Given the loss of plant species diversity, it is increasingly difficult for pollinators to find food throughout the year. Therefore, this study analyses the influence of plant diversity on pollinators. The study was conducted in the course of the Jena Experiment, which is a long-term biodiversity experiment (since 2002) with 60 plant species, common to Central European Arrhenatherum grasslands. With a plant diversity gradient of 1, 2, 4, 8, 16, and 60 plant species per plot, time-series data resulted from a wide range of ecosystem processes, ranging from productivity, decomposition, C-storage, and N-storage to herbivory, and pollination. These were studied to investigate the mechanisms underlying the relationships between biodiversity and ecosystem processes. Chapter 2 studies the spatio-temporal distribution of pollinators on flowers along an experimental plant diversity gradient. In particular, the spatial pollinator behaviour was examined. Chapters 3 and 4 continues on the chemical composition of flower nectar (nectar) of various plant species. The chemical composition of the nectar was analysed for the two most important macronutrients, carbohydrates (C) and amino acids (AA), using high performance liquid chromatography (HPLC). Subsequently, their contents were analysed in terms of concentration, proportional content and the ratio of carbohydrates to amino acids (C:AA). In Chapter 3, the nectar of 34 plant species from the grasslands of the Jena Experiment was compared. In Chapter 4, nectar was investigated in the context of diversity effects on the example of the plant species Field Scabious, Knautia arvensis. It was analysed to what extent the nectar quality (nutrient content) differs between plant individuals of one species. Overall, these studies indicate how fragile plant-pollinator interactions are but also how important plant species-rich grasslands are to support plant-pollinator interactions. Increased plant species diversity is essential to ensure the availability of flowering resources throughout the year. Pollinators, such as honeybees, bumblebees, solitary bees, and hoverflies can use the niches in time and in vertical space complementarily. However, in plant species-poor grasslands there may be more niche overlaps, which is probably due to a reduced availability of resources. This points to the need to include different plant species belonging to different plant families, whose nectar may have evolved in response to morphological flower traits and metabolic pathways. Therefore plant species diversity can supply pollinators with nectar differing in carbohydrate and amino acid content and thus differing in quality. Also C-AA ratios have proven to be a useful measurement to reveal differences between plant species. In addition, C:AA ratios were not differing in nectar of K. arvensis individuals growing in different plant species richness levels, although their nectar seemed to be more attractive in mixtures with 16 plant species, likely due to higher content of essential and phagostimulatory amino acids than in plant species-poor mixtures.
Crowdfunding is considered a promising instrument for transforming existing socio-technical regimes by financing radical innovations of such entrepreneurs. However, this potential has not yet been fully explored. Therefore, this dissertation addresses the overarching research question of how sustainable entrepreneurs can exploit the full potential of investment-based crowdfunding to develop from niche operators to actors in the socio-technical regime. Five journal articles and one book chapter are included in this PhD project, which use a wide range of quantitative methodologies. In the framework paper, the findings are conceptually evaluated on a meta-level by applying the multi-level perspective. The key insights can be assigned to four categories, including the financing and marketing function, the target group, and the project presentation. The analysis shows that investment-based crowdfunding is suitable to equally fund and market the business ideas of environmental entrepreneurs, since the quest for entering the mass market is highest for such ventures. In contrast, purely social entrepreneurs tend to conduct crowdfunding projects on a smaller scale and probably aim to stay in the niche. Nevertheless, profit-oriented social entrepreneurs are still encouraged to use investment-based crowdfunding for funding and marketing purposes. The prominent display of environmental effects (e.g. the amount of compensated greenhouse gases) and financial incentives (e.g. high interest rates) has a high impact on the investment decision of individuals on investment-based crowdfunding platforms. The case of fairafric is used as a best practice example to demonstrate how crowdfunding can be a stepping stone for sustainability-oriented niche actors to enter the mass market. The fair-trade and organic chocolate manufacturer has undergone six crowdfunding campaigns which enabled it to grow and build a strong community of supporters. The outcomes of this dissertation clarify how sustainable entrepreneurs can unleash the potential of investment-based crowdfunding for financing and marketing purposes.
Collaborative governance is a promising approach to address the difficult challenges of sustainability through global public and private partnerships between diverse actors of state, market and civil society. The textile and clothing industry is an excellent example where a variety of such initiatives have evolved to address the wicked sustainability challenges. However, the question arises whether collaborative governance actually leads to transformation. In this dissertation, the author therefore questions whether and how collaborative governance in the textile sector provides space for, or pathways to, sustainability transformation. In three scientific articles and this framework paper, the author uses a mixed-methods research approach and follows scholars of sustainability science towards transformation research. First, he conducts a systematic literature review on inter-organizational and governance partnerships before diving into a critical case study on an interactive collaborative governance initiative, the German Partnership for Sustainable Textiles (Textiles Partnership). The multi-stakeholder initiative (MSIs) was initiated by the German government in 2015 and brings together more than 130 organizations and companies from seven stakeholder groups. It aims at improving working conditions and reducing environmental impacts in global textile and clothing supply chains. In two empirical articles, the author then explores learning spaces in the partnership and the ways in which governance actors navigate the complex governance landscape. For the former, he uses a quantitative and qualitative social network analysis based on annual reports and qualitative interviews with diverse actors from the partnership. Then, he uses qualitative content analysis of the interviews, policy documents and conducts a focus group discussion to validate assumptions about the broader empirical governance landscape and the social interactions within. Finally, in this framework paper, he uses theories of transformation to distinguish forms of change and personal, political and practical spheres of transformation, and reflects on the findings of the three articles in this cumulative dissertation.
The question whether representation of travel experience actually leads to personal prestige enhancement has been widely neglected so far. The study of prestige benefits of travel is a necessary endeavour to develop suitable methodological approaches toward the concept, in order to close critical knowledge gaps and enhance scientific understanding. The present thesis lays out the rationale and results of three research projects which shed light onto the relationship between touristic self-presentation and its effects on personal prestige evaluations of the social environment. The empirical studies conclude in the following main findings: (1) Leisure travel is a useful means for people to self-express in a positive way, and material representations of travel are frequently displayed to others. Tourists make use of travel experience to self-present in a positive way by uploading photos on social media, collecting and displaying souvenirs, wearing jewellery and clothing from their last trip, or talking about their trips to others. They express positive self-messages about personal character traits, affiliation to social in-groups and proof of having travelled somewhere. The findings ascertain the utility of travel representations for positive self-expression, showing that travel experience is an effective vehicle for conspicuous consumption and self-expression as an antecedent for personal prestige enhancement. (2) Personal prestige is an element of social relations, and holds capacity to affect perceptions of social inclusion and social distinction, so it has to be conceptualised as a multidimensional construct. In a tourism context, personal prestige is reliably measurable along the four dimensions of hedonism, social inclusion, social distinction and prosperity. The herein developed Personal Prestige Inventory (PPI) is a valid, reliable and parsimonious measurement tool which substantially enhances methodological approaches toward empirical research into personal prestige. (3) The way in which people represent travel experience to others measurably affects how their personal prestige is evaluated by social others. Empirical evidence of a series of experimental studies provides support for the assumption that representation of travel experience has an effect on the social evaluation of tourists' personal prestige. Experimental variance suggests small to moderate effects on personal prestige depending on the amount of leisure information given about a person, participation in tourism, and the destination and type of travel represented. This evidence is reasonable basis to conclude that whether and how people travel, and whether and how they share travel experience with others, does measurably affect social other's evaluation of their personal prestige.
Many dynamics are reshaping the global macroeconomics and finance. This cumulative dissertation empirically examines the impacts of two major global dynamics, the disaster risks and the China's rise, on the global economy. Chapter 1 introduces the motivation and summarizes the dissertation. Chapter 2 investigates how geopolitical risks affect financial stress in the whole financial system and its sub-sectors (banking, stock, foreign exchange, bond) of major emerging economies. Chapter 3 shows how different disaster risks (financial, geopolitical, natural-technological) can explain the returns and risk premiums of stock and housing in advanced economies between 1870 and 2015. Chapter 4 examines how the rise of China is contributing to higher economic growth in emerging economies, especially after the Global financial crisis of 2007-2008. Chapter 5 illustrates how a close trade and investment relation with China has helped African countries to reduce poverty and to improve their income distribution.
Increasing objections have been formulated towards broadening the security category. Securitisation is used to bring attention to urgent and existential threats that cannot be resolved through ordinary political decisions. During the time of the state of emergency between 2015 and 2017, France strengthened its security forces and introduced generalised surveillance measures to curb the terrorist threat. The purpose of this Bachelor thesis is to problematise the securitisation of terrorism in the French case. To do so, the Just Securitisation Theory by Rita Floyd is used to examine the following research question: Was it just to securitise terrorism in France between 2015 and 2017? Through critical discourse analysis of 54 presidential speech acts and secondary text analysis, this study aims to scrutinise securitising moves and security practices of the French government. The presented results indicate that the justness of securitisation is highly questionable. The analysis shows that the governments set excessive goals of eliminating terrorism and that security measures were misappropriated to fight organised crime instead of terrorism.
This research report presents a transdisciplinary student research project on the development of climate resilience of communities on the Caribbean Island Dominica.
The research was conducted through a partnership between the Leuphana University Lüneburg and the Sustainable Marine Financing Programme (SMF) of the GIZ.
For the GIZ, the research project aimed at improving the understanding of the socio-ecological resilience framework for tackling problems of Marine Managed Areas and Marine Protected Areas. Also, it enabled new thoughts on how the GIZ and other development agencies can more effectively assists island states to better cope with the challenges of climate change.
The role of the students from the “Global Environmental and Sustainability Sciences” programme of Leuphana University included the design of four transdisciplinary research projects to research aspects of resilience of Caribbean communities.
The developing island states in the Caribbean are extremely vulnerable to more frequent and intense natural hazards while relying on the ecosystem services that are also at risk from extreme weather events, in particular Hurricanes. Low economic stability leads to a dependency of the states on international assistance. To decrease the vulnerability to shocks, counteracting measures that encourage learning and adaptation can increase the resilience against extreme weather events and their consequences.
Concepts that were considered during the design of the transdisciplinary research projects were the adaptation of systems, diversity and stakeholder participation and resilience-focused management systems. Also, the students critically assessed the concept of foreign aid and how it can be successful, mitigating the risk of introducing neo-colonial structures. Flood Management, Biodiversity, Small-Scale Agriculture and Foreign Aid on Dominica were the topics of the transdisciplinary projects. The research methods of a literature review, stakeholder mapping, interviews, scenario development and visioning were used in the projects.
In four scenarios developed in the ‘Flood Management’ project, it became evident that a broad as well as coordinated stakeholder engagement and a variety of measures are required for community resilience. A key finding of the ‘Biodiversity’ project was the identity dimension of community resilience, underlining the importance of the relationship between individuals and nature. The interlinkage of social identity processes and a resilient disaster response was also stressed by the project ‘Foreign Aid’, which highlighted that financial support is similarly important to inclusivity and reflexivity in the process of resource distribution. To recover from extreme weather events, the social memory also plays an important role. The project on ‘Small-scale Agriculture’ concluded, that the memory-making of local communities is as vital to community resilience as formal plans and trainings.
The research project was based on the research approach of transdisciplinarity because of its solution-orientation. It links different academic disciplines and concepts, and non-scientific stakeholders are included to find solutions for societal and related scientific problems. In the four projects, principles of transdisciplinary research were party applied, but some challenges arose due to the geographical distance, time constraints and a strong focus on the scientific part in some phases. Nonetheless, the findings of the projects provide valuable learning lessons to be applied in practice and that can prove useful for future research.
This thesis aims to develop a FE-based model of a dieless wire drawing process for wires made from magnesium alloys. To this end a general material model of pure magnesium and a model of the dieless wire drawing process are developed. Based on the general pure magnesium model an alloy specific model for AZ31 wire is developed. The performance of both models is assessed using experimental data generated on a dieless wire drawing prototype.
The process model is conceptionally split into the thermal and mechanical response of the wire. The thermal model is validated by axial temperature profiles and the mechanical model is vali-dated by CSA-reduction and wire force. Both behaviours are validated separately before combin-ing the thus created models into a thermomechanical model of the dieless wire drawing process. The thermal material model is developed for pure magnesium. An initial assumption of limited correlation between content of alloying elements and thermal behaviour, was disproven. As a results in addition to alloy-specific mechanical data, thermo-electric data is recorded to achieve thermal validity of the model. This is done by identifying the experimental maximum temperature of the drawn wire for a given heating power and calculating the necessary input power of the in-duction heating device to achieve this temperature in simulation. The mechanic material model is based on experimental stress-strain curves recorded for each investigated wire materials in addi-tion to pure magnesium data, based on literature.
Results show the thermomechanical magnesium models to be mostly valid, provided process parameters stay within the range of available data on the mechanic material performance. Where the model is forced to extrapolate material behaviour, simulation quality drops. This ap-plies for wire temperature and CSA-reduction. Estimations of wire force are shown to be invalid. For AZ31 wire the thermal model generated valid temperature profiles of the wire. The thermo-mechanical model for AZ31 is shown invalid as both CSA-reduction and wire force deviate from experimental results.
Who is taken into consideration when we talk about the citizens, about the people or the activists? Often it is a rather unquestioned privileged positionality, which is taken to be the standard that most of the time it is actually not. In this quote, the activist Madjiguène Cissé, from the transnational Sans-Papiers movement, raises that just because someone or something is not visible—to the broader public or a particular public—it does not mean that they have not been there for a long time. Migrant rights activism is not a new phenomenon but has intensified and become more networked and visible over the past years (Eggert & Giugni, 2015). This study explores group contexts of activism by, with and for refugees and migrants in Hamburg, the claims, interactions, challenges and processes that activists experience, discuss and deal with. I have approached activists experiencing political organizing in this context from a constructivist grounded theory perspective. This allowed me to develop conceptual perspectives grounded in activist groups’ realities and was advanced through existing literature on this social movement but also theories from other research fields. Solidarities emerged throughout the research process as a more concrete focus. This research sets out to answer the questions: What does solidarity mean in social movements, and how do migrant rights activist practices result in negotiating, enacting and challenging it?
This publication is a revised version of my dissertation thesis.
Algorithmic distribution has fundamentally altered the news industry and has led to conflicts over regulatory issues. Focusing on the introduction of European ancillary copyright, this chapter addresses an earlier international reform around algorithmic news distribution. Based on an in-depth thematic analysis of key documents from the policy formulation phase, the chapter maps the arguments for and against the ancillary copyright reform put forward by Google and news publishers in Germany. While we provide a detailed analysis of the underlying rationales of two key actors primarily affected by the regulation, we also place ancillary copyright in the context of competing private property and public policy visions, which allows for a better understanding of how and why different actors take particular positions on copyright reform and algorithmic regulation.
In contrast to the U.S., little research on the impact of structural racism in education in Germany has been conducted so far. Also, the Critical Race Theory (CRT) has little to no relevance in education. As school significantly influences the further life of children and young people, equal opportunities must be ensured to prevent the reinforcement of the social division in Germany. Therefore, this work will examine whether findings from studies in the U.S. can be transferred to the German educational system since both countries struggle with a substantial rise in racism, racially motivated violence, and hate.Hence this work aims to answer the following research question: How does the CRT influence the U.S. educational system and to what extent can these findings be transferred to the German context? First, key terms and the Critical Race Theory will be defined, which are at the core of education reforms and controversies in the US. Then, the history of the U.S. will be examined to contextualise the status quo of the educational system in the U.S. With this background knowledge and drawing from the theoretical framework of CRT, recent educational reforms and their impact will be analysed. Lastly, based on these findings, possible implications for Germany will be formulated.
Considering the recent success of right-wing populist candidates and parties in the United States and across Europe, there has for some years now been talk among scholars (and the wider public) about a worldwide democratic recession. The younger generations appear to be especially unsupportive of democracy’s liberal principles and more willing to express support for authoritarian alternatives. What these authors overlook, however, is that the publics of advanced industrial societies have experienced an intergenerational value shift. In fact, populations in industrial democracies have become more liberal overall, but not everyone’s mindset is changing at the same speed. It is mainly – but not exclusively – the members of the lower classes that do not keep up. While societies have generally become more liberal, there is increasing alienation between the social classes over these liberal values. Drawing on a more recent trend in social class research with a social cognitive approach, this dissertation contributes to the study of growing anti-democratic tendencies around the world by analyzing the interplay between inequality dynamics and value orientations. The focus lies on investigating the effect socio-cultural polarization (i.e., ideological polarization between social classes) has on civic culture in the mature democracies of the West. The findings suggest that it is not ideological polarization between the social classes that has the greatest negative effect on civic culture, or general civic attitudes and behavior, for that matter. It is the increasing dissent in society about whether the country’s elites are still to be trusted with making the right decisions to increase the average citizen’s quality of life. This difference in opinion manifests itself in a decline in some civic attitudes.
Urban areas are prone to climate change impacts. Simultaneously the world's population increasingly resides in cities. In this light, there is a growing need to equip urban decision makers with evidence-based climate information tailored to their specific context to adequately adapt to and prepare for future climate change. To construct climate information high-resolution regional climate models and their projections are pivotal. There is a need to move beyond commonly investigated variables, such as temperature and precipitation, to cover a wider breath of possible climate impacts. In this light, the research presented in this thesis is centered around enhancing the understanding about regional-to-local climate change in Berlin and its surroundings, with a focus on humidity. More specifically, following a regional climate modelling and data analysis approach, this research aims to understand the potential of regional climate models, and the possible added value of convection-permitting simulations, to support the development of high-quality climate information for urban regions, to support knowledge-based decision-making. The first part of the thesis investigates what can already be understood with available regional climate model simulations about future climate change in Berlin and its surroundings, particularly with respect to humidity and related variables. Ten EURO-CORDEX model combinations are analyzed, for the RCP8.5 emission scenario during the time period 1970-2100, for the Berlin region. The results are the first to show an urban-rural humidity contrast under a changing climate, simulated by the EURO-CORDEX ensemble, of around 6% relative humidity, and a robust enlarging urban drying effect, of approximately 2-4% relative humidity, in Berlin compared to its surroundings throughout the 21st century. The second part explores how crossing spatial scales from 12.5km to 3km model grid size affects unprecedented humidity extremes and related variables under future climate conditions for Berlin and its surroundings. Based on the unique HAPPI regional climate model dataset, two unprecedented humidity extremes are identified happening under 1.5°C and 2°C global mean warming, respectively SH>0.02 kg/kg and RH<30%. Employing a double-nesting approach, specifically designed for this study, the two humidity extremes are downscaled to the 12.5km grid resolution with the regional climate model REMO, and thereafter to the 3km with the convection-permitting model version of REMO (REMO NH). The findings indicate that the convection-permitting scale mitigates the SH>0.02kg/kg moist extreme and intensifies the RH<30% dry extreme. The multi-variate process analysis shows that the more profound urban drying effect on the convection-permitting resolution is mainly due to better resolving the physical processes related to the land surface scheme and land-atmosphere interactions on the 3km compared to the 12.5km grid resolution. The results demonstrate the added value of the convection-permitting resolution to simulate future humidity extremes in the urban-rural context. The third part of the research investigates the added value of convection-permitting models to simulate humidity related meteorological conditions driving specific climate change impacts, for the Berlin region. Three novel humidity related impact cases are defined for this research: influenza spread and survival; ragweed pollen dispersion; and in-door mold growth. Simulations by the regional climate model REMO are analyzed for the near future (2041-2050) under emission scenario RCP8.5, on the 12.5km and 3km grid resolution. The findings show that the change signal reverses on the convection-permitting resolution for the impact cases pollen, and mold (positive and negative). For influenza, the convection-permitting resolution intensifies the decrease of influenza days under climate change. Longer periods of consecutive influenza and mold days are projected under near-term climate change. The results show the potential of convection-permitting simulations to generate improved information about climate change impacts in urban regions to support decision makers. Generally, all results show an urban drying effect in Berlin compared to its surroundings for relative and specific humidity under climate change, respectively for the urban-rural contrast throughout the 21st century, for the downscaled future extreme conditions, and for the three humidity related impact cases. Added value for the convection-permitting resolution is found to simulate humidity extremes and the meteorological conditions driving the three impacts cases.
The transition of our energy system towards a generation by renewables, and the corresponding developments of wind power technology enlarge the requirements that must be met by a wind turbine control scheme. Within this thesis, the role of modern, model-based control approaches in providing an answer to present and future challenges faced by wind energy conversion systems is discussed. While many different control loops shape the power system in general, and the energy conversion process from the wind to the electrical grid specifically, this work addresses the problem of power output regulation of an individual turbine. To this end, the considered control task focuses on the operation of the turbine on the nonlinear power conversion curve, which is dictated by the aerodynamic interaction of the wind turbine structure and the current inflow. To enable a power tracking functionality, and thereby account for requirements of the electrical grid instead of operating the turbine at maximum efficiency constantly, an extended operational range is explicitly considered in the implemented control scheme. This allows for an adjustment of the produced power depending on the current state of the electrical grid and is one component in constructing a reliable and stable power system based on renewable generation. To account for the nonlinear dynamics involved, a linear matrix inequalities approach to control based on Takagi-Sugeno modeling is investigated. This structure is capable of integrating several degrees of freedom into an automated control design, where, additionally to stability, performance constraints are integrated into the design to account for the sensitive dynamical behavior of turbines in operation and the loading experienced by the turbine components. For this purpose, a disturbance observer is designed that provides an estimate of the current effective wind speed from the evolution of the measurements. This information is used to adjust the control scheme to the varying operating points and dynamics. Using this controller, a detailed simulation study is performed that illustrates the experienced loading of the turbine structure due to a dynamic variation of the power output. It is found that a dedicated controller allows wind turbines to provide such functionality. Additionally to the conducted simulations, the control scheme is validated experimentally. For this purpose, a fully controllable wind turbine is operated in a wind tunnel setup that is capable of generating reproducible wind conditions, including turbulence, in a wide operational range. This allows for an assessment of the power tracking performance enforced by the controller and analysis of the wind speed estimation error with the uncertainties present in the physical application. The controller showed to operate the turbine smoothly in all considered operating scenarios, while the implementation in the real-time environment revealed no limitations in the application of the approach within the experiments. Hence, the high flexibility in adjusting the turbine operating trajectories and structural design characteristics within the model-based design allows for efficient controller synthesis for wind turbines with increasing functionality and complexity.