Efficient Refuge policies for Bt cotton in India

This study examined the efficient refuge policies for Bt cotton for three cotton growing regions in India. This was accomplished by developing a single-pest, dual-toxin biological model simulating bollworm resistance to the Bt toxin and synthetic pyrethroids, followed by formulating profit functions for Bt and non-Bt cotton for a representative producer in each region. Profits received in subsequent periods were considered in the regulatory model in order to choose a refuge constraint (static problem) or a sequence of refuge policies (dynamic problem) for each region that maximize discounted profits received over 15 years, subject to various economic and biological constraints. Dynamic solutions for the regulatory problem were derived for each region using the Bellman equation. Results suggested that South Indian farmers do not need to grow a refuge, but farmers in the North and Central regions do. Results also suggested that planting sprayed refugia might be more profitable than planting unsprayed refugia. Sensitivity analysis revealed that the refuge requirements were sensitive to the initial Bt resistance level, relative proportion of CBWs in natural refuges, and proportions of heterozygous and homozygous fitnesses in all of the three regions. Moreover, static refugia were found more profitable as compared to dynamic refugia in the North and Central regions.Food Security and Poverty,

The Puzzle of Heterogeneity in Support for Free Trade

Over time and across countries, researchers have noted frequent and mostly unexplained gender differences in the levels of support for policies of free or freer trade: according to aggregate results from many surveys, women tend to be less favorable toward policies of liberalizing trade than men. Positing an economic security explanation based largely on a mobile factors approach, we ask if it is women generally who are more negative toward trade or rather women who are more economically vulnerable – i.e., women from the scarce labor factor. We utilize data from two recent surveys on individuals’ attitudes toward different facets of trade and its effects to examine this hypothesis empirically. Rejecting a monolithic definition of “women,” we find that disaggregating by education level illuminates to some extent what underlying characteristics might be helping to drive some of these findings. Lower-skilled women in the US are much less likely to support free trade compared to higher-skilled women and this may largely explain previous negative findings. The low versus high-skill dynamic is, however, much less clear in the findings using survey data from a small sample of developing countries

Food security - challenge of future generations

Food security is part of the security of each country in the world and this in turn in global security. Ensuring food security for the population of a state is primarily the obligation. An state must manage its resources efficiently and rationally otherwise jeopardize the very existence of the state and the people concerned. Each country's food security can be ensured primarily from internal resources through the policies applied by each country. Food security is a very dynamic concept that has evolved over time. Thus food security in developing countries has been achieved by creating a sustainable agricultural system by engaging in lengthy and costly policies to support agriculture. Today in these countries the concept has acquired other meanings. Because in these countries managed to provide food in plentiful amounts, place in the forefront of quality, food safety and social protection, so they are concerned about consumer health protection. Hunger is a major problem of food security and overall security in the contemporary era as it involves more or less all countries and affects broad areas of social and economic life. Solving this global problem could be achieved only through international cooperation, to which all countries should participate in both poor and rich. The problem of food security must also analyzed according to national conditions of each country. Thus each state has made the social policy, demographic, complex

Can agricultural protectionist policies help achieve food security in Nigeria?

This study mapped the dynamic interaction of narratives regarding Nigeria's pursuit of rice self-sufficiency and related trade policies since the 1970s to explore whether agricultural protectionist policies can help achieve food security in Nigeria. Developing agricultural trade policies that simultaneously secure imported food supplies and protect domestic agricultural development is a challenging task. Nigeria's protectionist policies have a controversial agenda. Few studies have investigated the dynamic process of rice production and trade policy from a historical viewpoint; our study fills this gap. Through mapping Nigeria's pursuit of rice self-sufficiency over the past 50 years, we found that seesawed trade policy parallels complex rice development, leaving imported rice dependence unchanged. Regardless of when policies switch to trade protection or liberalization, the procedure does not directly lead to increased rice production. Since much exploration is needed regarding how to achieve food security in Nigeria, we also identify three new dimensions for future food security research based on our findings' optimal recommendations

Advanced security infrastructures for grid education

This paper describes the research conducted into advanced authorization infrastructures at the National e-Science Centre (NeSC) at the University of Glasgow and their application to support a teaching environment as part of the Dynamic Virtual Organisations in e-Science Education (DyVOSE) project. We outline the lessons learnt in teaching Grid computing and rolling out the associated security authorisation infrastructures, and describe our plans for a future, extended security infrastructure for dynamic establishment of inter-institutional virtual organisations (VO) in the education domain

Advanced security infrastructures for grid education

This paper describes the research conducted into advanced authorization infrastructures at the National e-Science Centre (NeSC) at the University of Glasgow and their application to support a teaching environment as part of the Dynamic Virtual Organisations in e-Science Education (DyVOSE) project. We outline the lessons learnt in teaching Grid computing and rolling out the associated security authorisation infrastructures, and describe our plans for a future, extended security infrastructure for dynamic establishment of inter-institutional virtual organisations (VO) in the education domain

Advanced Security Infrastructures for Grid Education

This paper describes the research conducted into advanced authorization infrastructures at the National e-Science Centre (NeSC) at the University of Glasgow and their application to support a teaching environment as part of the Dynamic Virtual Organisations in e-Science Education (DyVOSE) project. We outline the lessons learnt in teaching Grid computing and rolling out the associated security authorisation infrastructures, and describe our plans for a future, extended security infrastructure for dynamic establishment of inter-institutional virtual organisations (VO) in the education domain

Experiences in teaching grid computing to advanced level students

The development of teaching materials for future software engineers is critical to the long term success of the grid. At present however there is considerable turmoil in the grid community both within the standards and the technology base underpinning these standards. In this context, it is especially challenging to develop teaching materials that have some sort of lifetime beyond the next wave of grid middleware and standards. In addition, the current way in which grid security is supported and delivered has two key problems. Firstly in the case of the UK e-Science community, scalability issues arise from a central certificate authority. Secondly, the current security mechanisms used by the grid community are not line grained enough. In this paper we outline how these issues are being addressed through the development of a grid computing module supported by an advanced authorisation infrastructure at the University of Glasgow

The integrated maritime policy of the European Union in the context of the new oceanic paradigm

The lntegrated Maritime Policy (IMP) of the EU is included within the new maritime policy initiatives arisen in the last years both in developed and developing countries. This article claims that these initiatives are the response to the new challenges in the oceanic domain. The lMP is the European answer to the new oceanic order. In the global context, the lMP competes with other emerging countries with dynamic economies, whose competitiveness rests on not so rigorous social and environmental standards. On the other hand, this article underlines the importance of maritime policies for security, as they contribute to a better governance of the oceanic domain which, to a great extent, Jalls outside the jurisdiction of the States