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Newly available geographical information from the Panel Study of Income Dynamics (PSID) is used to estimate a variety of relationships involving high-poverty metropolitan census tracts. The longitudinal data from the PSID show a great deal of geographical mobility even for persistently poor adults, with as many as one fourth of certain groups of these entering and leaving poor urban census tracts in a year. At the same time, solution of the transition matrices for various groups—whites and blacks of various income classes, in families with and without children, living in different types of census tracts—in the early 1980s shows the gradual emptying out of poor urban tracts, particularly of whites and blacks in families without children. As a consequence, despite the great degree of geographical “churning,” poor urban areas gradually become poorer, blacker, and the home of a larger share of black families with children. Some of these aggregate trends had been noticed by researchers comparing these areas in the 1970 and 1980 censuses; our more up-to-date results demonstrate the relationships between the micro and macro data.  相似文献   
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This paper reflects on the use of a participatory learning and action (PLA) framework in a strategic planning process (SPP) at a primary school in rural Kenya. Successes and challenges are discussed, focusing on the barriers to fully implementing the PLA framework. Additionally, lessons learnt and ways forward for participatory SPPs are outlined. The PLA framework allowed the project stakeholders to engage in a planning process that gave participants a voice in the process. Although PLA methodology faces shortcomings, the application of this model is a step towards making community development more sustainable.  相似文献   
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As parties bargain over the terms of an agreement, they are concurrently negotiating their relationship. In this parallel negotiation, parties seek to position themselves to advantage by using a variety of strategic moves. In so doing the other party can be put into a defensive position making it difficult to advocate effectively. Turns, such as interrupting, correcting, questioning, naming, and diverting, challenge these moves. Turns can be used restoratively to move out of a defensive position or participatively, to engage the other in collaboration. Anticipating strategic moves and having turns in mind is part of preparing to negotiate.  相似文献   
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Even though the conviction that Russia was evolving in a more moderate direction was an important underlying assumption of German policy in the months leading up to the Treaty of Rapallo, it has been essentially ignored in the scholarship on Rapallo. Equally ignored is the central role played by Carl Graap in promoting this assumption in Berlin. This article aims toward filling this gap and toward improving our understanding of the relationship between Germany and Russia in the twentieth century in general and in the period from 1919 to 1922 in particular.  相似文献   
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