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101.
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This article examines contemporary Japanese overseas tourism from a supplier‐side perspective using the concept of production systems. We first outline characteristics of the evolving structure of Japanese overseas tourism, with an emphasis on the global spread of Japanese travel companies. This provides a frame for presenting an empirical account of the transactional relationships in the Japanese package tour production system in Whistler, British Columbia, where Japanese tour operators play a pivotal role. We conclude that the recent expansion of Japanese travel companies is fostering the functional integration of the global tourism production system and exhibits increasing reflexivity. 相似文献
103.
Gina Porter Frances Harris† Fergus Lyon‡ Jasper Dung§ A A Adepetu§ 《The Geographical journal》2003,169(4):370-381
This paper explores changing socio-environmental interactions in the vegetable producing areas of the Jos Plateau over the decade 1991–2001. It considers the pressures of market forces and ethnic competition and the tensions which arise as interactions between the two are played out in a fragile physical, social and institutional environment. The region has seen a remarkable expansion in irrigated vegetable production, as dry season surveys in 1991 and 2001 attest. Local farmers appear extremely positive in their perceptions of change, pointing not only to expanded production, but also to other improvements, like growing percentages of children in school and improved transport. But behind this rosy view of change there are tensions and a series of unresolved questions which may soon have to be addressed. We examine the changing nature of socio-environmental interactions over the decade and ask whether and how current levels of production can be sustained in the context of a currently largely unregulated production system and growing competition for land. Given the important role of the Plateau as a source of temperate fruit and vegetables in West Africa, these questions have significance far beyond the Plateau region itself. 相似文献
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国外漂白粘土和澄清粘土的产销现状综述 总被引:1,自引:0,他引:1
漂白粘土和澄清粘土应具有较大的表面积、较高的吸附性能及褪色能力,多由膨润土经活化(酸化)处理后制成。当前,德国、美国在世界漂白土生产中占据重要地位。漂白粘土和澄清粘土世界市场销量约86万t/a,其中70%~80%用于食用油和油脂工业。漂白粘土的发展受食用油工业发展的影响最大,亚洲还有较大的发展空间。澄清粘土多用作葡萄酒、果汁等的澄清剂,也有一定的发展前景。漂白土再利用的途径,仍在探索中。 相似文献
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吕孟旭 《测绘与空间地理信息》2003,26(1):33-35
介绍使用计算机制作专题地图的工艺流程,及计算机制图在印刷前的生产制作的工作步骤和方法,指出了在制作中需要注意的事项,对出版高质量的地图在各环节如何加以控制提出了建议。 相似文献
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Steven B. Brooks Timothy L. Crawford Walter C. Oechel 《Journal of Atmospheric Chemistry》1997,27(2):197-207
Large carbon dioxide plumes with concentrations up to 45 ppm aboveambient levels were measured about 15 km downwind of the Prudhoe Bay, Alaskamajor oil production facilities, located at 70° N Lat. above the ArcticCircle. The measured emissions were 1.3 × 103 metrictons (C) hour-1 (11.4× 106 metric tons(C) year-1), six times greater than the combustion emissionsassumed by Jaffe and coworkers in J. Atmos. Chem. 20 (1995), 213–227,based on 1989 reported Prudhoe Bay oil facility fuel consumption data, andfour times greater than the total C emissions reported by the oil facilitiesfor the same months as the measurement time periods. Variations in theemissions were estimated by extrapolating the observed emissions at a singlealtitude for all tundra research transect flights conducted downwind of theoil fields. These 30 flights yielded an average emission rate of1.02 × 103 metric tons (C) hour-1 with astandard deviation of 0.33 × 103. These quantity ofemissions are roughly equivalent to the carbon dioxide emissions of7–10 million hectares of arctic tussock tundra (Oechel and Vourlitis,Trends in Ecol. Evolution 9 (1994), 324–329). 相似文献