3,163 research outputs found
The role of government in agricultural innovation: Lessons from Bolivia
"Many governments in developing countries attempt to foster agricultural development and innovation by setting up funding facilities, extension programs, and research centers and by subsidizing private-sector and farm activities through fiscal measures. However, when trying to manage complex innovation processes involving many and different actors, governments sometimes find it difficult to design effective interventions and therefore end up supporting and managing only the public research and extension organizations that directly depend upon them. With the aid of various donors, Bolivia introduced a scheme in 2001—the Bolivian Agricultural Technology System (SIBTA)—by which government support to agricultural research and extension was partly delegated to regional semiautonomous foundations. This brief presents the results of a study on the role of the Bolivian government in guiding and managing SIBTA. The study found that despite a number of weaknesses related to the design of the system and the government's limited commitment, the regional foundations have been able to effectively identify the demands of small farmers, set priorities, and provide transparency and accountability with regard to funding and decisionmaking. It suggests that instead of micromanaging such foundations, the government should focus on the big picture and conduct policy analysis and strategic planning to identify opportunities for agricultural innovation and set up incentive mechanisms and information networks that support the many actors involved in innovation processes." from textAgricultural innovations, Private sector, Technological innovations, Agricultural research, Agricultural development, stakeholders, Farmers, Producer organizations, Extension,
Who has influence in multistakeholder governance systems?
As multistakeholder governance has emerged as an important feature in development, new governance structures that foster the participation of multiple stakeholders from the public sector, civil society, and the private sector have emerged in various fields, ranging from the management of natural resources to the provision of public services. To make such governance structures work, it is essential to understand how different stakeholders influence decisionmaking and what determines their influence. This paper uses Net-Map, an innovative participatory method, to analyze how networking influences decisionmaking in multistakeholder governance structures, using the case of the governance board of the White Volta River Basin in northern Ghana as an example. The method visualizes both the relations between all stakeholders in watershed management as perceived by the 17 members on the board and their influence on development outcomes. The study suggests that significant effects of social networking are at play beyond the formal lines of command and funding as stakeholders in watershed management make decisions. Stakeholders are more influential if they participate more prominently in information exchange and provide more advice to others. This counterbalances the overrepresentation of government actors on the board. Meanwhile some government organizations have a low level of influence, even though they are central in giving funding and command. These findings may be interesting for program leaders and policymakers in watershed management: when designing governance structures they need to take into account the importance of social networking to attain main objectives of watershed development; it is important to provide space that allows the exchange of information and advice among stakeholders. Meanwhile, policymakers and program leaders as well must consider overrepresentation of social network champions in multistakeholder governance structures and the limited capacity of government bodies in social networking. The paper serves to introduce not only the specific findings concerning this case study but also the participatory research method (Net-Map) that was used.decisionmaking, multistakeholder governance, Natural resource management, Social networks,
Innovation Trajectories in Honduras’ Coffee Value Chain. Public and Private Influence on the Use of New Knowledge and Technology among Coffee Growers
In this paper, results from a study on the use of improved coffee production technology schemes among smallholder coffee producers in three prominent coffee producing regions in Honduras are presented. The impact of various schemes (trajectories) in which different agents influence the producers’ decision to use new technologies was analyzed. In particular, there are differences in the influence of a) private coffee buying organizations and b) government and public development agencies on the innovation behavior of coffee growers. Drawing from network data that depict the internal and outbound connectedness of producers in three village communities in main coffee producing zones in Honduras, tools of social network analysis were applied to find out how interactions with certain agents, separately and cumulatively, has influenced their use of improved methods in coffee production and marketing. The results suggest that there are significant differences in the way that various providers of knowledge and technology, especially private buyers and development agencies, influence the farmers’ behavior towards innovation. The influence of buyers, according to the data, is focused on certification and quality aspects, whereas development agents focus on improved agronomic practices. Farmers who communicate with the extension branch of input providers tend to be more innovative. These results suggest that development programs should take more seriously into account the role of private actors in innovation among agricultural producers and, hence, design development programs in such a way to allow for collaboration with these agents.coffee production, innovation, upgrading, social networks, Honduras, Agribusiness, Agricultural and Food Policy, Food Consumption/Nutrition/Food Safety, Food Security and Poverty, Production Economics, Research Methods/ Statistical Methods, Risk and Uncertainty,
How change agents and social capital influence the adoption of innovations among small farmers: Evidence from social networks in rural Bolivia
"This paper presents results from a study that identified patterns of social interaction among small farmers in three agricultural subsectors in Bolivia—fish culture, peanut production, and quinoa production—and analyzed how social interaction influences farmers' behavior toward the adoption of pro-poor innovations. Twelve microregions were identified, four in each subsector, setting the terrain for an analysis of parts of social networks that deal with the diffusion of specific sets of innovations. Three hundred sixty farmers involved in theses networks as well as 60 change agents and other actors promoting directly or indirectly the diffusion of innovations were interviewed about the interactions they maintain with other agents in the network and the sociodemographic characteristics that influence their adoption behavior. The information derived from this data collection was used to test a wide range of hypotheses on the impact that the embeddedness of farmers in social networks has on the intensity with which they adopt innovations. Evidence provided by the study suggests that persuasion, social influence, and competition are significant influences in the decisions of farmers in poor rural regions in Bolivia to adopt innovations. The results of this study are meant to attract the attention of policymakers and practitioners who are interested in the design and implementation of projects and programs fostering agricultural innovation and who may want to take into account the effects of social interaction and social capital. Meanwhile, scholars of the diffusion of innovations may find evidence to further embrace the complexity and interdependence of social interactions in their models and approaches." from Author's AbstractSocial networks, Agricultural innovation, Change agent, Social capital,
A Navier-Stokes Solution of Hull-Ring Wing-Thruster Interaction
Navier-Stokes simulations of high Reynolds number flow around an axisymmetric body supported in a water tunnel were made. The numerical method is based on a finite-differencing high resolution second-order accurate implicit upwind scheme. Four different configurations were investigated, these are: (1) barebody; (2) body with an operating propeller; (3) body with a ring wing; and (4) body with a ring wing and an operating propeller. Pressure and velocity components near the stern region were obtained computationally and are shown to compare favorably with the experimental data. The method correctly predicts the existence and extent of stern flow separation for the barebody and the absence of flow separation for the three other configurations with ring wing and/or propeller
Agricultural innovation in Latin America: understanding the private sector's role
"For many years, governments and donors have promoted the generation of knowledge and technological innovations that improve farming and plant genetic resources in developing countries. Because of the “public good” nature of agricultural research for developing countries, it was assumed that the private sector would not invest sufficiently in producing knowledge and technologies that contribute to rural development and poverty alleviation there. So public agencies and aid organizations have initiated and subsidized agricultural research and innovation to supplement the knowledge and technology produced by private entities. Yet many of these publicly generated improvements have not been useful to farmers, processors, and agribusiness and hence have not been adopted on a wide scale. Others have not been transferred to those who would have contentedly absorbed them. At the same time, the production and marketing technologies for the fastest-growing products, such as fresh fruits and vegetables, have been introduced mostly by the private sector. In this context, it is crucial to revisit the role the private sector can play in generating knowledge and technology for agricultural development. What functions do farm input providers, farmers, processors, traders, and exporters have in agricultural innovation processes, and how can they become more directly involved in the financing, generation, diffusion, and adoption of new knowledge and technologies?" from TextAgricultural innovations Latin America, Private sector, Technological innovations, Poverty alleviation, Agricultural research, Rural development projects, Public investments, Agricultural development, stakeholders,
Building public–private partnerships for agricultural innovation in Latin America: Lessons from capacity strengthening
"The International Service for National Agricultural Research�on its own from 2002 until 2003, and as a division of the International Food Policy Research Institute thereafter has studied 124 public–private partnerships in agriculture in nine Latin American countries through its initiative on public–private partnerships for Agro-Industrial Research in Latin America...This paper examines...seven cases of public–private partnership building in which private- sector companies, producer associations, and research organizations engage in collaboration for the purpose of developing innovations in agricultural production and value chains. The paper considers different points of entry to partnership building, emulating best practices. The paper describes (a) how common interests among multiple stakeholders have been identified; (b) how partners have been motivated to participate in partnerships; (c) how the roles of different brokers within or outside the partnerships have fostered partnership development; and (d) how the contributions of partners have been negotiated to ensure that partnership arrangements are in alignment with the interests of the partners, their capacities, and the prevailing technological and market opportunities. The paper targets policymakers and administrators in agricultural development, and collaborators in research and innovation projects who are interested in issues of how best to build partnerships among public and private agents." from Authors' AbstractPublic-private partnerships, Agricultural innovations, Capacity strengthening, Agricultural research,
Carotenoid triplet state formation in Rhodobacter sphaeroides R-26 reaction centers exchanged with modified bacteriochlorophyll pigments and reconstituted with spheroidene
Triplet state electron paramagnetic resonance (EPR) experiments have been carried out at X-band on Rb. sphaeroides R-26 reaction centers that have been reconstituted with the carotenoid, spheroidene, and exchanged with 132-OH-Zn-bacteriochlorophyll a and [3-vinyl]-132-OH-bacteriochlorophyll a at the monomeric, lsquoaccessoryrsquo bacteriochlorophyll sites BA,B or with pheophytin a at the bacteriopheophytin sites HA,B. The primary donor and carotenoid triplet state EPR signals in the temperature range 95–150 K are compared and contrasted with those from native Rb. sphaeroides wild type and Rb. sphaeroides R-26 reaction centers reconstituted with spheroidene. The temperature dependencies of the EPR signals are strikingly different for the various samples. The data prove that triplet energy transfer from the primary donor to the carotenoid is mediated by the monomeric, BChlB molecule. Furthermore, the data show that triplet energy transfer from the primary donor to the carotenoid is an activated process, the efficiency of which correlates with the estimated triplet state energies of the modified pigments
Viscous vortex flows
Several computational studies are currently being pursued that focus on various aspects of representing the entire lifetime of the viscous trailing vortex wakes generated by an aircraft. The formulation and subsequent near-wing development of the leading-edge vortices formed by a delta wing are being calculated at modest Reynolds numbers using a three-dimensional, time-dependent Navier-Stokes code. Another computational code was developed to focus on the roll-up, trajectory, and mutual interaction of trailing vortices further downstream from the wing using a two-dimensional, time-dependent, Navier-Stokes algorithm. To investigate the effect of a cross-wind ground shear flow on the drift and decay of the far-field trailing vortices, a code was developed that employs Euler equations along with matched asymptotic solutions for the decaying vortex filaments. And finally, to simulate the conditions far down stream after the onset of the Crow instability in the vortex wake, a full three-dimensional, time-dependent Navier-Stokes code was developed to study the behavior of interacting vortex rings
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