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| Registros recuperados: 58 | |
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| Winters, Paul C.; de Janvry, Alain; Sadoulet, Elisabeth. |
| A household's decision to send migrants is based on information the household has on the expected returns and the costs of migration. Information on migration flows from both family migrant networks and community migrant networks. Direct assistance - in the form of money, housing, transportation, and food - is often provided to migrants by these networks, thus reducing the costs of migration. Using data from a national survey of rural Mexican households, we show the importance of networks in both the decision to migrate and the level of migration. We find that community and family networks are substitutes in the production of information and assistance suggesting that, once migration is well established in a community, family networks become less... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Migration; Networks; Mexico; Consumer/Household Economics; Labor and Human Capital. |
| Ano: 1999 |
URL: http://purl.umn.edu/12907 |
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| Clark, Richard A.. |
| The theory and practice of sustainable improvement and innovation partnerships and networks design and management can be enhanced in agricultural industries. The BPP project can contribute to enhanced real-world practices, and the research and development of better mechanisms, for the design and management of innovation partnerships and networks. The Partnership and Network Strategy is designed to accelerate the rate, scale and impact of valuable improvements and innovations in the beef industry by involving key players in the industry and ensuring support for all partners. |
| Tipo: Article |
Palavras-chave: Partnerships; Networks; Clusters; Networking; Support; Dissemination; Diffusion; Farm Management. |
| Ano: 2008 |
URL: http://purl.umn.edu/122183 |
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| Boncinelli, Leonardo; Pin, Paolo. |
| The best shot game applied to networks is a discrete model of many processes of contribution to local public goods. It has generally a wide multiplicity of equilibria that we refine through stochastic stability. In this paper we show that, depending on how we define perturbations, i.e. the possible mistakes that agents can make, we can obtain very different sets of stochastically stable equilibria. In particular and non-trivially, if we assume that the only possible source of error is that of an agent contributing that stops doing so, then the only stochastically stable equilibria are those in which the maximal number of players contributes. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Networks; Best Shot Game; Stochastic Stability; Environmental Economics and Policy; C72; C73; D85; H41. |
| Ano: 2010 |
URL: http://purl.umn.edu/96840 |
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| Dall'Asta, Luca; Pin, Paolo; Ramezanpour, Abolfazl. |
| We consider any network environment in which the “best shot game” is played. This is the case where the possible actions are only two for every node (0 and 1), and the best response for a node is 1 if and only if all her neighbors play 0. A natural application of the model is one in which the action 1 is the purchase of a good, which is locally a public good, in the sense that it will be available also to neighbors. This game will typically exhibit a great multiplicity of equilibria. Imagine a social planner whose scope is to find an optimal equilibrium, i.e. one in which the number of nodes playing 1 is minimal. To find such an equilibrium is a very hard task for any non-trivial network architecture. We propose an implementable mechanism that, in the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Networks; Best Shot Game; Simulated Annealing; Institutional and Behavioral Economics; C61; C63; D85; H41. |
| Ano: 2009 |
URL: http://purl.umn.edu/50684 |
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| Hogeland, Julie A.. |
| The evolution of the federated relationship between local and regional cooperatives is examined from the perspective of local cooperatives’ need for commodity-based farm supplies and regional cooperatives’ identity as food companies. Because locals want many competing bids for the supplies they purchase, they resist a strong and close affiliation with regional cooperatives, which then find themselves with excess capacity. Regionals have responded by instituting tighter bonds with selected local cooperatives operating as "internal supply networks," in exchange for certain benefits. This adaptation reduces the impact of divergent goals among regionals and locals within the federated system. |
| Tipo: Report |
Palavras-chave: Cooperatives; Federation; Networks; Competition; Regionalization.; Agribusiness. |
| Ano: 2002 |
URL: http://purl.umn.edu/44645 |
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| Giglio, Ernesto Michelangelo; Rimoli, Celso Augusto; Silva, Ralph dos Santos. |
| This paper discusses the conditions of birth and growth of business networks in the veterinary drugs sector based on Brazilian examples examined by the authors. The beginnings of business networks are approached from two paradigms, one advocating the idea that the birth and growth of networks depend on some variables’ historical processes which define social networks, such as trust, cooperation and commitment, and another postulating that these attributes are not necessary for the formation of networks, it being sufficient to have only consistent economic expectations and a proper agreement. The aim of this paper was to assess which of the two network paradigms (the social paradigm and the business paradigm) best explains the birth of two networks in the... |
| Tipo: Journal Article |
Palavras-chave: Networks; Social relationships; Agroindustry; Agribusiness; Agricultural Finance. |
| Ano: 2008 |
URL: http://purl.umn.edu/60716 |
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| Dercon, Stefan; Hoddinott, John; Krishnan, Pramila; Woldehanna, Tassew. |
| Collective action can help individuals, groups, and communities achieve common goals, thus contributing to poverty reduction. Drawing on longitudinal household and qualitative community data, the authors examine the impact of shocks on household living standards, study the correlates of participation in groups and formal and informal networks, and discuss the relationship of networks with access to other forms of capital. In this context, they assess how one form of collective action, iddir, or burial societies, help households attenuate the impact of illness. They find that iddir effectively deal with problems of asymmetric information by restricting membership geographically, imposing a membership fee, and conducting checks on how the funds were spent.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Collective action; Burial societies; Shocks; Vulnerability; Poverty; Networks; Ethiopia; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/44356 |
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| van der Kroon, Sandra M.A.; Zaalmink, Wim; Geerling-Eiff, F.A.; de Grip, K.; Hubeek, Francisca B.; Leeuwis, C.; Wielinga, H.E.; van Wijk-Jansen, Elvi E.C.. |
| Since the privatization of the agricultural extension service in the Netherlands and the need for a more market oriented approach, the agricultural innovation system "REE" (from Research through Extension and Education to farmers), no longer seems to provide a suitable response to the complex social changes faced by the agricultural sector. The research programme "Networks in Livestock Farming" can be seen as an experiment aimed at giving a new shape to the interaction between practice, research and policy and thus increasing the self-solving ability of farmers and encouraging innovation in livestock farming in the Netherlands. In 2004, 50 networks of livestock farmers were facilitated by 35 project directors from Wageningen University and Research Center... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Networks; Knowledge generation; Sustainable innovations; Facilitation; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2005 |
URL: http://purl.umn.edu/24248 |
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| Oliveira, Renato Ferreira de; Araujo, Uajara Pessoa; Santos, Antonio Carlos dos. |
| Fair trade is a commercial practice that aims to help small farmers in underdeveloped countries through mechanisms that can modify the supply chain. This paper, through exploratory, quantitative and transversal research, tries to investigate this structuring effect of fair trade on the productive nodule of the chain, examining the cohesion caused by this intervention on a small Cooperative of Coffee Family Farmers (organic and conventional SAT-no agro toxic substances used in production) in Poço Fundo in the state of Minas Gerais. The social network and supply chain perspectives, suported by Granovetter’s embeddeness theory, were used to analyze the information surveyed. Although a high degree of cohesion was observed, there were also some hints of... |
| Tipo: Journal Article |
Palavras-chave: Fair Trade; Organic coffee; Supply chain; Networks; Agribusiness; Agricultural Finance. |
| Ano: 2008 |
URL: http://purl.umn.edu/60705 |
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| Sarmento,Raissa; Alves-Costa,Cecília P.; Ayub,Adriana; Mello,Marco A.R.. |
| Community-level network studies suggest that seed dispersal networks may share some universal properties with other complex systems. However, most of the datasets used so far in those studies have been strongly biased towards temperate birds, including not only dispersers, but also seed predators. Recent evidence from multi-taxon networks suggests that seed dispersal networks are not all alike and may be more complex than previously thought. Here, we used network theory to evaluate seed dispersal in a strongly impacted Atlantic Forest fragment in northeastern Brazil, where bats and birds are the only extant dispersers. We hypothesized that the seed dispersal network should be more modular then nested, and that the dispersers should segregate their services... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diet overlap; Frugivory; Modularity; Nestedness; Networks. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000300006 |
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| Registros recuperados: 58 | |
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