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Showing 1 to 7 of 7 (0.374 seconds)Spelling suggestions: "subject:"übernahme"" "subject:"übernahme""
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Effective even when neglected: Farmer groups and the diffusion of agroforestry innovations in rural communities of Eastern Africa / Bäuerliche Gruppen und die Ausbreitung agroforstlicher Innovationen in ländlichen Gemeinden OstafrikasDarr, Dietrich 21 November 2008 (has links) (PDF)
The purpose of the current dissertation is to explore the contribution of development-oriented farmer groups to the diffusion of innovations in rural communities of Kenya and Ethiopia, to identify the key factors that determine the effectiveness of diffusion, and to derive recommendations that aim at better utilizing the potential of groups for rural extension work. A profound review of four theoretical frameworks served to derive a multiple-pathway model of innovation diffusion that amalgamates major concepts of the social network and functional group theory. By accommodating multiplex social relationships and by facilitating analyses at multiple levels the model alleviates major conceptual shortcomings of previous research. The research employs a multiple case study design. Four peasant communities have been investigated that are largely comparable in respect with bio-physical conditions. The case studies aim to cover the maximum diversity with regard to the role of farmer groups in the prevailing extension approach, as well as the mode of group organization. Data collection tools comprise reconnaissance surveys, standardized household interviews (N=841), qualitative key informant and in-depth interviews, participant observation, and the review of secondary sources. Group and non-group social networks constitute the units of analysis. Inferential statistical analyses mainly used multivariate linear regression techniques. The findings illustrate that farmers, through their group and non-group networks and under group-oriented and individual extension alike, exchange information, knowledge, social pressures and other forms of influence that shape their individual adoption decisions. Yet, innovations tend to disseminate more effectively in farmer groups vis-à-vis non-group networks, and the groups tend to be more effective when addressed by extension agents. Lack of access to extension services represents a crucial limitation to innovation adoption in the study villages. Yet, increased extension intensity has proved to foster innovation diffusion only in situations of group extension, whereas intensified individual extension services do not considerably increase horizontal farmer-to-farmer knowledge exchange. The research reveals that the advantage of farmer groups can be attributed to their dimorphic character combining the bridging and bonding effects of ‘weak’ and ‘strong’ ties. By facilitating the emergence of cohesive relationships among the group members and by simultaneously enhancing the members’ exposure to external information sources group-oriented extension work considerably contributes to foster the diffusion of innovations among farmers. Intermediate absolute levels of group homogeneity best facilitate the diffusion of innovations among the group members. The findings suggest that increased group activity can overcome diffusion barriers that arise from too heterogeneous or too homogeneous configurations alike. Member commitment is the group climate dimension most consistently related to diffusion effectiveness in farmer groups. The results suggest that group-oriented extension services can alleviate obstructions of the diffusion process that result from less favorable group climate. Thus, this research work proposes that the effectiveness of innovation diffusion among farmers is under the managerial control of the extension agencies in group-oriented extension approaches through at least one of the following mechanisms: (a) promoting the emergence of cohesive member relationships, which in turn foster effective innovation spread; (b) stimulating the activity of farmer groups, which in turn compensates for less effective diffusion under unfavorable group composition; and (c) compensating for diffusion barriers that result from a less favorable group climate. Recommendations refer to the improvement of extension practice and directions for future research.
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Effective even when neglected: Farmer groups and the diffusion of agroforestry innovations in rural communities of Eastern AfricaDarr, Dietrich 20 October 2008 (has links)
The purpose of the current dissertation is to explore the contribution of development-oriented farmer groups to the diffusion of innovations in rural communities of Kenya and Ethiopia, to identify the key factors that determine the effectiveness of diffusion, and to derive recommendations that aim at better utilizing the potential of groups for rural extension work. A profound review of four theoretical frameworks served to derive a multiple-pathway model of innovation diffusion that amalgamates major concepts of the social network and functional group theory. By accommodating multiplex social relationships and by facilitating analyses at multiple levels the model alleviates major conceptual shortcomings of previous research. The research employs a multiple case study design. Four peasant communities have been investigated that are largely comparable in respect with bio-physical conditions. The case studies aim to cover the maximum diversity with regard to the role of farmer groups in the prevailing extension approach, as well as the mode of group organization. Data collection tools comprise reconnaissance surveys, standardized household interviews (N=841), qualitative key informant and in-depth interviews, participant observation, and the review of secondary sources. Group and non-group social networks constitute the units of analysis. Inferential statistical analyses mainly used multivariate linear regression techniques. The findings illustrate that farmers, through their group and non-group networks and under group-oriented and individual extension alike, exchange information, knowledge, social pressures and other forms of influence that shape their individual adoption decisions. Yet, innovations tend to disseminate more effectively in farmer groups vis-à-vis non-group networks, and the groups tend to be more effective when addressed by extension agents. Lack of access to extension services represents a crucial limitation to innovation adoption in the study villages. Yet, increased extension intensity has proved to foster innovation diffusion only in situations of group extension, whereas intensified individual extension services do not considerably increase horizontal farmer-to-farmer knowledge exchange. The research reveals that the advantage of farmer groups can be attributed to their dimorphic character combining the bridging and bonding effects of ‘weak’ and ‘strong’ ties. By facilitating the emergence of cohesive relationships among the group members and by simultaneously enhancing the members’ exposure to external information sources group-oriented extension work considerably contributes to foster the diffusion of innovations among farmers. Intermediate absolute levels of group homogeneity best facilitate the diffusion of innovations among the group members. The findings suggest that increased group activity can overcome diffusion barriers that arise from too heterogeneous or too homogeneous configurations alike. Member commitment is the group climate dimension most consistently related to diffusion effectiveness in farmer groups. The results suggest that group-oriented extension services can alleviate obstructions of the diffusion process that result from less favorable group climate. Thus, this research work proposes that the effectiveness of innovation diffusion among farmers is under the managerial control of the extension agencies in group-oriented extension approaches through at least one of the following mechanisms: (a) promoting the emergence of cohesive member relationships, which in turn foster effective innovation spread; (b) stimulating the activity of farmer groups, which in turn compensates for less effective diffusion under unfavorable group composition; and (c) compensating for diffusion barriers that result from a less favorable group climate. Recommendations refer to the improvement of extension practice and directions for future research.
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Essays in MicroeconomicsRakic, Ruzica 31 July 2017 (has links)
Diese Dissertation besteht aus drei unabhängigen Kapiteln über mikroökonomische Themen. Die ersten beiden Kapitel befassen sich mit Themen der Industriökonomie und Wettbewerbstheorie, wohingegen das dritte Kapitel Fragestellungen von Cheap Talk Spielen untersucht. Kapitel 1 untersucht die Folgen, die sich aus einer partiellen Akquisition zwischen Wettbewerbern ergeben. Kapitel 2 analysiert die Auswirkungen einer Forschungs-und Entwicklungs (FuE)- Kooperation auf die Investitionsanreize in einem Markt, in dem eine Mehrproduktunternehmer mit einem Einzelproduktuntfirma konkurriert. Kapitel 3 untersucht die Funktion der Mediation zur Erleichterung der Kommunikation mit privaten Informationen. / This dissertation consists of three independent chapters in the field of microeconomics. The first two chapters are concerned with topics of industrial organization and competition policy, whereas the third chapter addresses some problems in cheap talk games. Chapter 1 studies anti-competitive issues that arise from partial acquisition between competitors. Chapter 2 analyzes the effects of cooperation on R&D investment incentives in a market where a multi-product firm competes with a single-product firm. The third chapter examines the role of mediation in facilitating communication with private information.
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Adoption and adaptation of innovationsNdah, Hycenth Tim 01 September 2014 (has links)
Die Studie mit Fokus auf die Übernahme von Fischproduktion und konservierender Bodenbearbeitung (KB) in Sub-Sahara Afrika (SSA) verdeutlicht 1) die Komplexität von Übernahme- und Diffusionsprozessen landwirtschaftlicher Innovationen in SSA, vertieft 2) den Wissensstand zur Diffusion dieser zwei Innovationen und, leistet 3) einen Beitrag zur Entwicklung eines neuen methodischen Ansatzes für den Forschungsgegenstand. Neben der Darstellung der wesentlichen Konzepte und Literatur basieren die empirischen Daten auf semi-strukturierten Interviews, Fokusgruppendiskussionen, Teilnehmerbeobachtung und QAToCA, einem in der Studie entwickelten, partizipativen und expertenbasierten Bewertungsansatz. Die Ergebnisse zeigen, dass Fischzucht – speziell im Fall von Kamerun – eine attraktive Beschäftigung für mittelständische Landwirte ist. Zur weiteren Verbreitung dieser Innovation besteht jedoch Bedarf für 1) zielgerichtete Förderung mittelständischer Landwirte, 2) Verbesserung der Organisationsstruktur der Landwirte, 3) Stärkung des Beratungssystems, und 4) Verbesserung der Forschung für Jungfischaufzucht. Mit Anwendung von QAToCA für die Übernahme von KB zeigen die Ergebnisse i) hohes Übernahmepotential in Malawi, Sambia, Tansania, Kenia – aufgrund positiver institutioneller Faktoren, ii) geringes Übernahmepotential für Simbabwe – bezüglich der instabilen Marktlage, iii) geringes Übernahmepotential in Süd-Burkina Faso – aufgrund der Konkurrenz um Ernterückstände zwischen KB und Tierproduktion, und iv) hohes Übernahmepotential für Nord-Burkina Faso – was sich darauf zurückführen lässt, dass Alternativen zu KB nicht bestehen. Für eine anhaltende Übernahme landwirtschaftlicher Innovationen in SSA zeigt die Arbeit Handlungsbedarf auf für 1) Berücksichtigung des Bedarfs für neue Absatzmärkte, 2) Anpassung von Innovationen an bestehende Managementstrukturen von Betrieben und, 3) Entwicklung von fördernden politischen und institutionellen Rahmenbedingungen auf Dorf- und Regionalebene. / Focusing on adoption of Fish farming and Conservation Agriculture (CA) in sub-Saharan Africa (SSA), this study: 1) partly demonstrate that, the reality of adoption and diffusion of agricultural innovations in SSA is a more complex issue, 2) improve on the knowledge and understanding of diffusion for these two innovations in SSA and, 3) develop and contribute to a new methodological approach in this field of study. Apart from reviewing concepts and relevant literature, empirical data for this work was obtained by using semi structured interviews, focus group discussions and participant observation alongside a participatory expert-based assessment approach (QAToCA) - developed within this work. Results revealed that, Fish Farming especially for the case of Cameroon remains an attractive activity for medium-scale farmers. However for a sustained adoption of this innovation, there is need for 1) targeted support to medium-scale farmers, 2) improving organisational structures of farmers, 3) strengthening the fragile extension system, and, 4) improving research on fingerlings production. Following application of QAToCA in assessing CA adoption, results reveal i) high adoption potential for Malawi, Zambia, Tanzania, Kenya - explained by presence of positive institutional factors, ii) low adoption potential for Zimbabwe - attributed to unstable and less secured market conditions, iii) low adoption potential for Southern Burkina Faso - explained by strong competition of CA with livestock over residue, and iv) high adoption potential for northern Burkina Faso - explained by the fact that farmers have no alternative than to adopt CA. For long lasting adoption of agricultural innovations in SSA, this work calls for 1) addressing emerging needs for new input and output market outlets, 2) adapting innovations to existing management structures of adopting farms and, 3) developing a supportive political and institutional frame condition at village and regional levels.
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Jahresbericht 2002 / Universitätsbibliothek ChemnitzThümer, Ingrid 13 July 2007 (has links) (PDF)
Jahresbericht der Universitätsbibliothek Chemnitz - Berichtsjahr 2002 / Annual report of the University Library of Chemnitz in 2002
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Jahresbericht 2002 / Universitätsbibliothek ChemnitzThümer, Ingrid 13 July 2007 (has links)
Jahresbericht der Universitätsbibliothek Chemnitz - Berichtsjahr 2002 / Annual report of the University Library of Chemnitz in 2002
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Le gouvernement d’entreprise en droit européen et brésilien comparéLaranjeira, Rodrigo de Almeida 08 September 2016 (has links)
Corporate Governance hat einen radikalen Wandel in Europa seit den 1990er Jahren durchgemacht. Der Wandel ist konsolidiert und ist nun Teil des Rechts der modernen Aktiengesellschaften. Brasilianisches Recht wird immer durch die europäische Gesetzgebung inspiriert. Unsere Studie fragt, aus einer vergleichenden Sicht, ob sich das brasilianische Unternehmensrecht auf die europäische Corporate Governance bezieht. Wir konzentrieren uns in Europa auf das deutsche Recht, das englische Recht, das französische Recht und das europäische Recht. Unsere Analyse geht über die Herzen der Unternehmensführung und umfasst Teile, die dem Kapitalmarkt- und dem Umweltrecht angehören, da sie selbstverständlich auch eine Verbindung mit der Corporate Governance und dem Aktienrecht haben. Das Verständnis des Kerns der Unternehmensführung, welcher die Organisation der Verwaltungsorgane der börsennotierten Aktiengesellschaft ist, hängt von der Analyse der rechtlichen Behandlung von Neben-Themen, die aber verwandt sind, ab, wie die Regeln über die Haftung. / Corporate governance has undergone a radical change in Europe since the 1990s. Change has now consolidated and is part of the company law. Brazilian law has always been inspired by European legislation. Our study asks, from a comparative perspective, if the Brazilian corporate law relates to the European corporate governance. In Europe, we focus on German law, English law, French law and Community law. Our analysis goes beyond the heart of corporate governance and includes parts of capital markets law and environmental law, because they obviously also have a connection with corporate governance and company law. The understanding of the core of corporate governance, which is the organization of administrative bodies of the listed company on a regulated market, depends on the analysis of the legal treatment of incidental subjects, but related, as the regime of liability.
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