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91.
《The Professional geographer》2013,65(3):296-297
Edward Jarvis in 1850 first demonstrated that admission rates to mental hospitals decrease with increasing residential distance, a relationship known today as “Jarvis's Law.” His original data are presented, mapped, and examined by regression analysis to better understand spatial and temporal patterns of mid-19th century mental hospital utilization. Distance substantially affected admission rates to a radius of about 60 miles from the institution in Massachusetts; and there was strong distance decay in the other states examined. For all twelve states, there was a positive association between age of the hospitals and admission rates, which also decreased with increasing residential distance. 相似文献
92.
湿地执法管理是湿地保护的重要手段,探讨了九段沙湿地执法管理的3种模式:单一执法、联合执法、综合执法。根据九段沙湿地现状,认为综合执法是九段沙湿地保护和管理的最佳模式,它将为上海市的国际化生态城市的建设和经济的可持续发展起到积极作用。 相似文献
93.
推进测绘地理信息依法行政对于促进地理信息产业健康发展具有保驾护航的重要作用.本文概述了我国测绘地理信息市场的发展形势,分析了制约地理信息产业健康发展所面临的主要问题和挑战,提出了规范市场秩序、优化发展环境的重点任务和促进地理信息产业做大做强的保障服务措施. 相似文献
94.
Dong-Oh Cho 《Marine Policy》2012,36(2):321-326
Illegal bottom trawl fishing using nets with a small mesh size has been one of the most difficult problems to address in fisheries management in Korea. This practice has occurred for the last century, since the Japanese colonial period. The elimination of illegal bottom trawl fishing, regulated in the Fisheries Law (Law No. 10292), was extremely difficult because the number of vessel owners increased to greater than 3000, creating a strong oppositional lobby. Therefore, the Korean government carried out an ‘incentive program’ to buy-back vessels, which has been very effective in eliminating illegal bottom trawl fishing in the coastal waters of Korea. 相似文献
95.
随着经济的快速发展和城市化进程的日趋加快,金乡县用地需求不断加大,供需矛盾越来越尖锐。为保护耕地资源,保障经济发展,金乡县国土资源局以科学的发展观为指导,明确工作目标,更新执法理念,创新执法机制,强化执法手段,提高了国土资源执法监察水平,取得明显成效。 相似文献
96.
Variable and conflicting shear stress estimates inside a boundary layer with sediment transport 下载免费PDF全文
This paper presents a comparison between two methods for estimating shear stress in an atmospheric internal boundary layer over a beach surface under optimum conditions, using wind velocities measured synchronously at 13 heights over a 1.7 m vertical array using ultrasonic anemometry. The Reynolds decomposition technique determines at‐a‐point shear stresses at each measurement height, while the Law‐of‐the‐Wall yields a single boundary layer estimate based on fitting a logarithmic velocity profile through the array data. Analysis reveals significant inconsistencies between estimates derived from the two methods, on both a whole‐event basis and as time‐series. Despite a near‐perfect fit of the Law‐of‐the‐Wall, the point estimates of Reynolds shear stress vary greatly between heights, calling into question the assumed presence of a constant stress layer. A comparison with simultaneously measured sediment transport finds no relationship between transport activity and the discrepancies in shear stress estimates. Results do show, however, that Reynolds shear stress measured nearer the bed exhibits slightly better correlation with sand transport rate. The findings serve as a major cautionary message to the interpretation and application of single‐height measurements of Reynolds shear stress and their equivalence to Law‐of‐the‐Wall derived estimates, and these concerns apply widely to boundary layer flows in general. © 2015 The Authors. Earth Surface Processes and Landforms published by John Wiley & Sons Ltd. 相似文献
97.
98.
《Marine Policy》2017
The goal of this article is to present Brazil's interests and concerns in the South Atlantic, through the analysis of the ongoing governmental plans to its adjacent sea, and the security and defense issues in the ocean region. First, it will introduce four important programs, namely the Proarquipelago, Protrindade, Leplac, and Proarea, launched by the country after the entry into force of the United Nations Convention on the Law of the Sea. Then, it will discuss some of the domestic and international initiatives taken by Brazil to build a stable political and economic environment in the South Atlantic. Despite the peaceful purposes of the Brazilian agenda and policy to the sea, there are underlying reasons, such as keeping secure its oil and gas fields and consolidating its role as a major player in the ocean region, that must be considered as well. However, changes in the domestic scenario may provoke unprecedented modifications in this agenda. 相似文献
99.
《Marine Policy》2017
While the coastal State has ‘sovereign rights’ with respect to the exploration, exploitation, conservation and management of the living resources of the exclusive economic zone, including the right to take the necessary enforcement measures, these rights are not as all-encompassing as they first appear. In practice, the geographic and substantive limitations on the coastal State's jurisdiction in the exclusive economic zone provide significant challenges to effective fisheries governance and enforcement. This paper considers the approaches that have been adopted – or could be adopted – by coastal States seeking to improve the reach and effectiveness of their jurisdiction over the living resources of the exclusive economic zone, by reference to the current state of jurisprudence from international courts and tribunals. 相似文献
100.
《The Professional geographer》1987,39(1):94-129
Book Reviewed in this article: The Rice Economy of Asia . Randolph Barker and Robert W. Herdt with Beth Rose. Using Microcomputers: A Guidebook for Writers, Teachers, and Researchers in the Social Sciences . Blaine A. Erie—the Lake that Survived . Noel M. Burns. Geology and Society . Donald R. Coates. Caves and Karst of Kentucky . Percy H. Dougherty, ed. Altered Harvest: Agriculture, Genetics, and the Fate of the World's Food Supply . Jack Doyle. The Middle East and North Africa, A Political Geography . Alasdair Drysdale and Gerald H. Blake. Clamor at the Gates. The New American Immigration . Nathan Glazer, ed. Development and the Landowner: An analysis of the British experience . Robin Goodchild and Richard Munton. Discovering Landscape in England and Wales . Andrew Goudie and Rita Gardner. The Modern Plantation in the Third World . Edgar Graham and Ingrid Floering. Social Relations and Spatial Structures . Derek Gregory and John Urry, eds. The World Food Problem 1950–1980 . David Grigg. Costa Rica: A Geographical Interpretation in Historical Perspective . Carolyn Hall. The Urbanization of Capital: Studies in the History and Theory of Capitalist Urbanization . David Harvey Consciousness and the Urban Experience: Studies in the History and Theory of Capitalist Urbanization . David Harvey. Reviving Main Street . Deryck Holdsworth, ed. Rural Roads and Poverty Alleviation . John Howe and Peter Richards, eds. Uneven Development in Southern Europe: Studies of Accumulation, Class, Migration and the State . Ray Hudson and Jim Lewis, eds. Karst Geomorphology . J. N. Jennings. The Geomorphology of North-west England . R. H. Johnson, ed. Climate Impact Assessment: Studies of the Interaction of Climate and Society . Robert Kates, Jesse Ausubel, Mimi Berberian, eds. Public Service Provision and Urban Development . Andrew Kirby, Paul Knox, and Steven Pinch, ed. State and Market: The Politics of the Public and the Private . Jan-Erik Lane, ed. Living Cities . Twentieth Century Fund Task Force on Urban Preservation Policies. World Climatic Systems . John G. Lockwood. Urban Ethnicity in the United States. New Immigrants and Old Minorities . Lionel Maldonaldo and Joan Moore, eds. Culture and Conservation: The Human Dimension in Environmental Planning . Jeffrey A. McNeely and David Pitt, eds. The Andean Past. Land, Societies, and Conflicts . Magnus Mörner. Gaia: An Atlas of Planet Management . Norman Myers, ed. Progress in Industrial Geography . Michael Pacione, ed. Progress in Political Geography . Michael Pacione, ed. Rivers and Landscape . Geoff Petts and Ian Foster. Urbanization and Planning in the 3rd World: Spatial Perceptions and Public Participation . Robert B. Potter. One Island, Two Nations? A Political Geographical Analysis of the National Conflict in Ireland . D. G. Pringle. Circulation in Third World Countries . R. Mansell Prothero and Murray Chapman. The Ozarks Outdoors: A Guide for Fishermen, Hunters, and Tourists . Milton D. Rafferty. Suburban Burglary: A Time and a Place for Everything . George Rengert and John Wasilchick. Geomorphology and Soils . K.S. Richards, R.R. Arnett, and S. Ellis, eds. The Homes and Homeless of Post-War Britain . Frederick Shaw. Indochinese Refugees in America . Paul J. Strand and Woodrow Jones, Jr. Wild Horses and Sacred Cows . Richard Symanski. Forever Wild: Environmental Aesthetics and the Adirondack Forest Preserve . Philip G. Terrie. The Regional Economic Impact of Technological Change . A.T. Thwaites and R.P. Oakey, eds. The Good Life . Yi-Fu Tuan. 相似文献