共查询到20条相似文献,搜索用时 15 毫秒
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Qualitative Research Methods for Community Development,by Robert Mark Silverman and Kelly L. Patterson. 2015. New York: Routledge. 126 + xii. ISBN 978‐0‐415‐74035‐7, $190 (cloth); ISBN 978‐0‐415‐74036‐4, $49.95 (paper); ISBN 978‐1‐315‐79776‐2 (ebook). 下载免费PDF全文
Roger Bolton 《Journal of regional science》2015,55(4):682-684
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The p‐regions problem involves the aggregation or clustering of n small areas into p spatially contiguous regions while optimizing some criteria. The main objective of this article is to explore possible avenues for formulating this problem as a mixed integer‐programming (MIP) problem. The critical issue in formulating this problem is to ensure that each region is a spatially contiguous cluster of small areas. We introduce three MIP models for solving the p regions problem. Each model minimizes the sum of dissimilarities between all pairs of areas within each region while guaranteeing contiguity. Three strategies designed to ensure contiguity are presented: (1) an adaptation of the Miller, Tucker, and Zemlin tour‐breaking constraints developed for the traveling salesman problem; (2) the use of ordered‐area assignment variables based upon an extension of an approach by Cova and Church for the geographical site design problem; and (3) the use of flow constraints based upon an extension of work by Shirabe. We test the efficacy of each formulation as well as specify a strategy to reduce overall problem size. 相似文献
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Evelyn Blumenberg 《Journal of regional science》2014,54(3):535-536
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Steven Deller 《Journal of regional science》2014,54(3):539-541
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Jon R. Miller 《Journal of regional science》2014,54(3):543-544
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Global Handbook of Quality of Life: Exploration of Well‐Being of Nations and Continents,edited by Wolfgang Glatzer,Laura Camfield,Valerie Møller,and Mariano Rojas. New York: Springer. 894 + xii. ISBN‐978‐94‐017‐9177‐9; ISBN 978‐94‐017‐9178‐6 (eBook). Cloth, $559.00. 下载免费PDF全文
Gordon Mulligan 《Journal of regional science》2015,55(4):673-675
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Andy Krause 《Journal of regional science》2013,53(3):547-548
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Peter Dilg 《Berichte zur Wissenschaftsgeschichte》2000,23(4):432-432
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