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排序方式: 共有811条查询结果,搜索用时 15 毫秒
21.
90年代以来,我国缩微旅游景点出现巨大的投资热潮,随之而来的是巨大的浪费。作者通过对缩微旅游资源的特征与功能、市场容量及其在旅游资源中的地位分析,认为目前中国缩微旅游资源开发区域可分为3个等级,不同等级的区域所采取的缩微旅游资源开发措施及应开发的主题和规模也应有所不同。 相似文献
22.
Ricardo J. Elia 《Natural Resources Research》1997,6(2):85-98
Archaeological sites, the material remnants of our human past, are finite and nonrenewable cultural resources that are under
constant threat from environmental forces, development activities, warfare, vandalism, and looting. Site looting is the destructive
removal of archaeological objects to supply the art market. Looting is part of an economic system, the antiquities market,
that works to supply the demand of collectors for archaeological objects. The destruction of archaeological resources by looters
is an international crisis and threatens to obliterate the world’s cultural heritage and our ability to understand past cultures.
The scale and intensity of the looting problem can be estimated by studying the extent of site destruction in countries of
origin and by investigating the sources of antiquities held by collectors. Finding a solution to the problem of looting will
require a focus on the demand side of the market (i.e., collectors) instead of the traditional focus on the supply side (looters,
dealers) 相似文献
23.
Elvin K. Wyly 《The Professional geographer》1996,48(4):431-444
This study analyzes commuting trends in a relatively vibrant setting during the 1980s to determine (a) how labor market segmentation correlates with differences in the spatial dimensions of local labor markets, and (b) whether this link represents a direct spatial effect, independent of earnings, travel mode, and part-time work. I use 1980 and 1990 PUMS data to analyze changes in racial and gender divisions in the workforce, and I develop an estimate of work trip distance to adjust for different travel modes. For all groups except white men, employment in a job “typical” of one's gender and racial group is associated with more localized commutes, but this effect is strongly mediated by variations in earnings and part-time work. Using a covariance structure model to control for these effects, I find no independent link between segmentation and longer commutes among African Americans. Earnings and commute distances remained unchanged over the decade for African Americans, providing no evidence of a purely spatial mismatch manifest in lengthening work trips without corresponding wage gains. The spatial dimensions of an employment mismatch for inner-city minorities are concealed through the replacement of production jobs by poorly paid service work in the expanding downtown economy of a vibrant regional center. 相似文献
24.
Metropolitan growth and labor markets in Mexico 总被引:1,自引:0,他引:1
Adrian Guillermo Aguilar 《GeoJournal》1997,43(4):371-383
The objective of this paper is to examine the main changes in the metropolitan labor markets associated with economic restructuring in Mexico during the late 1980s and beginning of the 1990s. The analysis refers particularly to the four largest metropoles of the country, Mexico City, Guadalajara, Monterrey and Puebla, looking for common characteristics in their emergent employment structures now strongly differentiated in terms of rewards, stability in employment relations and conditions of access to jobs. The analysis reveals that largest metropolitan areas have been the most profoundly affected by the economic restructuring resulting from globalization, through a rapid de-industrialization and the expansion of the tertiary sector. Metropolitan labor markets in Mexico, at the time that show signs of social polarization in the formal sector, put in evidence a general process of precarization – less labor stability, replacement of permanent by part-time jobs, and increasing subcontracting –, segmentation of the labor force, and an increasing informal conditions of economic activities with small businesses and unskilled, temporarly and poorly paid jobs. The labor force segmentation and its more precarious and casual conditions are mostly explained by the impact of recent neoliberal policies, and recurrent economic crisis during the 1980s and 1990s which highly contributes to social inequality. 相似文献
25.
铜经济地质的进展述评 总被引:1,自引:1,他引:1
介绍了成矿理论研究的一些新进展和有助于找矿的一些新成果,如奥林匹克坝型铜矿的成因模式、高温、高硅流纹岩及流纹岩石英斑晶氧同位素组成对评价VHMS型铜矿的意义等。理论研究与适当的勘探方法相结合以及锲而不舍的努力是铜矿床尤其是大型、特大型铜矿发现的基本途径。 相似文献
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攀西地区具有发展各类果树得天独厚的自然资源优势。根据攀西特色水果的特点和产业发展的条件,在大区域背景下,分析了攀西地区特色水果在国内市场的竞争优势,明确了攀西地区特色水果的市场定位:大力发展早熟枇杷、石榴和晚熟芒果及深加工,以品质的优良、上市时间的优势占领高端市场,把资源优势转化为产品优势和经济优势。在此基础上,提出了攀西地区特色水果发展中需要重视的问题。 相似文献
29.
Transfer of Taiwanese ideas and technology to The Gambia, West Africa: a viable approach to rural development? 总被引:1,自引:0,他引:1
The development of Taiwan's agricultural sector contributed significantly to the country's transformation from virtual poverty after World War II to a modern industrial nation. Success resulted from the use of appropriate technologies, developed through an exceptionally close working relationship between government, research and development institutions, extension services and farmers in Taiwan. As part of their overseas development aid programme, the Republic of China on Taiwan has established Technical Missions in those developing countries where it receives political recognition. Among these is The Gambia, West Africa, where one focus of Taiwan's current Technical Mission is the development of women's market gardens. Although the gardens have proved successful, there is doubt as to whether their achievements will be sustained once Taiwan's Technical Mission in The Gambia has ended. Field research in Taiwan and in The Gambia, based largely on participatory techniques, has revealed that the low-tech methods introduced from Taiwan are appropriate for the Gambian environment. However, much depends on whether women participating in the schemes can commit sufficient time and energy to the gardens, as at present this is a limiting factor. The potential of the gardens may also be constrained by a lack of appropriate institutional infrastructure, particularly the scope for profitable disposal of garden produce. A major conclusion of the article is that successful transfer of appropriate technology to The Gambia is likely to be impeded by poorly developed coordination between groups that proved to be key 'players' in the development of agriculture in Taiwan: government, research and development institutions, extension services and producers. 相似文献
30.
PAUL J. KALDJIAN 《Geographical review》2004,94(3):284-304
ABSTRACT. For centuries, a network of market gardens throughout Istanbul provisioned the city with fresh vegetables. These bostans and their gardeners held a respected place in Istanbul life, contributing to the city's food and employment needs. Today, only fragments remain. Massive urban development, intense competition for metropolitan space, modernization, changing institutions and laws, and the global industrialization of food have threatened this tradition with extinction. But in spite of the overwhelming forces behind their demise, some of Istanbul's bostans persist. Efforts to support and promote the gardens, and to draw from the expertise and experience of their gardeners, are emerging. From a historical perspective, this article examines Istanbul's bostans to understand their meaning and contribution to the city's people and landscape. 相似文献