Suchergebnisse

Media reports of environmental science often give equal weight to opposing viewpoints, which can make the science seem more controversial than it actually is. The current study extended the research in this area by examining whether discrediting one expert viewpoint would minimize false perceptions of controversy. Participants ( N = 247) read articles about environmental risks containing one viewpoint, two balanced viewpoints, or two viewpoints with one discredited. Results showed that a discredited opposing viewpoint often influenced risk and uncertainty perceptions in similar ways to a balanced opposing viewpoint, implying that this tactic may not necessarily minimize false perceptions of controversy.

The assessment of mixture effects of estrogenic agents is regarded as an issue of high priority by many governmental agencies and expert decision-making bodies all over the world. However, the few mixture studies published so far have suffered from conceptual and experimental problems and are considered to be inconclusive. Here, we report the results of assessments of two-, three- and four-component mixtures of o,p'-DDT, genistein, 4-nonylphenol, and 4-n-octylphenol, all compounds with well-documented estrogenic activity. Extensive concentration-response analyses with the single agents were carried out using a recombinant yeast screen (yeast estrogen screen, YES). Based on the activity of the single agents in the YES assay we calculated predictions of entire concentration-response curves for mixtures of our chosen test agents assuming additive combination effects. For this purpose we employed the models of concentration addition and independent action, both well-established models for the calculation of mixture effects. Experimental concentration-response analyses revealed good agreement between predicted and observed mixture effects in all cases. Our results show that the combined effect of o,p'-DDT, genistein, 4-nonylphenol, and 4-n-octylphenol in the YES assay does not deviate from expected additivity. We consider both reference models as useful tools for the assessment of combination effects of multiple mixtures of xenoestrogens.

Intro -- Vorbemerkungen -- Inhalt -- Tabellen, Übersichten und Karten -- Tabellen -- Übersichten -- Karten -- I. Die Gemeinschaftsaufgabe als Instrument der Regionalpolitik -- 1. Konzeption und Instrumentarium der regionalen Wirtschaftsförderung in der Bundesrepublik Deutschland -- 2. Regionalpolitik im Spannungsverhältnis von Ausgleichs- und Wachstumsziel -- 3. Zur bisherigen Kritik an der Gemeinschaftsaufgabe -- II. Erfolgsbedingungen wachstums- und ausgleichsorientierter Strategien -- 1. Bedingungen für eine gesamtwirtschaftlich optimale Wachstumsstrategie -- 2. Bedingungen für eine sinnvolle Ausgleichsstrategie -- III. Analyse veränderter Rahmenbedingungen (A): Gesamtwirtschaftliche Aktivitätstrends mit räumlichen Aspekten unter politischen Statusquo-Bedingungen -- 1. Bevölkerungsentwicklung -- 2. Nachfrage nach Arbeitsplätzen -- 3. Gesamtwirtschaftliche Entwicklungstendenzen -- 4. Wandlungen der Wirtschaftsstruktur -- 5. Energieverfügbarkeit und -preise -- 6. Verkehrsinfrastruktur -- 7. Neue Kommunikationstechnologien -- 8. Sonstige Infrastruktur -- 9. Entwicklungstendenzen der Flächennutzung -- 10. Entwicklungstendenzen des Produktionsfaktors Umwelt -- IV. Analyse veränderter Rahmenbedingungen (B): Zum Einfluß raumbezogener Politikbereiche -- 1. Sektorale Strukturpolitik -- 2. Forschungs- und Entwicklungspolitik -- 3. Umwelt- und Naturschutzpolitik -- 4. Raumordnung und Landesplanung -- 5. Finanzausgleich -- V. Zur Flexibilität der Gemeinschaftsaufgabe -- 1. Entwicklungen auf der Ebene der Rahmenplanung -- 2. Entwicklungen bei der Durchführung der GRW auf Länderebene -- 3. Grundzüge heutiger Politikverflechtung in der GRW -- VI. Schlußfolgerungen und Überlegungen für die künftige Konzeption der Gemeinschaftsaufgabe -- 1. Zur Frage der Zielrangfolge: Ausgleichs- und/oder Wachstumsstrategie?.

10p MS Word Doc file ; International audience ; In this overview article we describe the manifold achievements and challenges of Intergeo, a project co-funded within the eContentplus programme of the European Union.

5 pages http://www.ictmt9.org/ ; International audience ; We describe the key achievements of Intergeo, a project co-funded within the eContentplus programme of the European Union, and their impact on teacher education, based on the technical and educational concepts of the Intergeo Platform.

5 pages http://www.ictmt9.org/ ; International audience ; We describe the key achievements of Intergeo, a project co-funded within the eContentplus programme of the European Union, and their impact on teacher education, based on the technical and educational concepts of the Intergeo Platform.

10p MS Word Doc file ; International audience ; In this overview article we describe the manifold achievements and challenges of Intergeo, a project co-funded within the eContentplus programme of the European Union.

5 pages http://www.ictmt9.org/ ; International audience ; We describe the key achievements of Intergeo, a project co-funded within the eContentplus programme of the European Union, and their impact on teacher education, based on the technical and educational concepts of the Intergeo Platform.

10p MS Word Doc file ; International audience ; In this overview article we describe the manifold achievements and challenges of Intergeo, a project co-funded within the eContentplus programme of the European Union.

5 pages http://www.ictmt9.org/ ; International audience ; We describe the key achievements of Intergeo, a project co-funded within the eContentplus programme of the European Union, and their impact on teacher education, based on the technical and educational concepts of the Intergeo Platform.