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101.
Bob Baulch 《发展研究杂志》2013,49(4):512-534
This article considers the statistical performance of four commonly used econometric tests for market integration: the Law of One Price, the Ravallion Model, cointegration and Granger causality. A spatial price equilibrium (SPE) model, that is subject to both production shocks and general price inflation, and mimics many of the key characteristics of integrated food markets, is constructed. The model is used to generate food price time series of lengths that are typical of the short sample sizes available in most developing countries, for both instantaneously integrated and independent markets. A series of Monte Carlo experiments on these artificial food price time series are performed, which show that all four of the conventional tests for market integration are statistically flawed. 相似文献
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How online insourcing might improve EU policy development—the view from inside the European Commission 下载免费PDF全文
Perhaps policy‐makers are not the most progressive of actors when it comes to incorporating online technologies in their everyday workflow, but they are certainly not dismissive of the Internet and its potential for policy‐making (e.g. European Commission, 2011 , 2012 ). Could online insourcing, for example, be a way to improve the quality of new legislation? This article presents the current view from the European Commission (‘EC’). We have found that many of its Directorates‐General (‘DG’) are actively investigating into the possibilities of insourcing more and better policy contributors at the pre‐legislative stage, by means of online technology. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
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The value of simulations in the classroom is well established, and there are numerous publications that feature specific role-play exercises that can readily be introduced into the classroom. Frequently, however, instructors would like to design their own simulations to fit their specific learning objectives for a class, but don’t know where to start. This article lays out a series of structural and design questions for instructors to consider in order to craft their own simulations. We recognize that there is no singularly “best” way to design simulations, so this article focuses on the key components of simulations and explores different possibilities for each of these components depending on the desired goals of the instructor. We begin with the basics of class size, topic selection, learning objectives, length, and timing. Next, we discuss the design parameters—including the nature of student interaction, desired output, background information, role-specific instructions, and a timeline for the phases of the simulation. We move on to considerations about the actual running of the simulation, and wrap up with reflections on debriefing, grading, and assessment. By stepping through the design questions that are summarized in the Appendix, any instructor, experienced or new to role-playing, can develop a custom simulation to help meet the learning objectives for their courses. 相似文献
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In 2006, the United Nations High Commissioner for Refugees reportedthat an average of 211 million people each year were directlyaffected by the accumulated impact of natural disasters.1 Thisis approximately five times the number of people thought tohave been affected by conflict over the past decade.2 It iscommonly expected that, as a result of climate change, populationgrowth and inappropriate urbanisation, the incidence, severityand impact of natural disasters will continue to rise. And yetwhile the obligations of states in situations of armed conflicthave been extensively debated, the applicability of human rightslaw in the aftermath of natural disaster has not been so widelyexamined by regional or international human rights bodies. Thispaper considers the obligations of governments in the aftermathof natural disasters, with a particular focus on the right tohousing. The applicability of human rights law (and specificallyeconomic, social and cultural rights) in the aftermath of naturaldisaster is considered in a general sense, followed by a discussionof the content of the right to housing, and the obligationsof governments to respect, protect and fulfil this right inthe course of responding to disaster. The question of whetherstates have an obligation to provide restitution, compensationor other form of reparation to those who have lost homes, landand property by reason of natural disaster is also discussed.The paper draws on examples from the Indian Ocean tsunami (2004),the Pakistan earthquake (2005) and the South Asian floods (2007),and identifies specific elements of government obligations thatare of particular importance in ensuring the right to adequatehousing in the aftermath of natural disaster. 相似文献
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