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21.
Research on the neurobiology and pharmacotherapy of attention-deficit/hyperactivity disorder (ADHD) has grown exponentially since 1980. A reasonable question is whether this research has improved our understanding and treatment of ADHD. This article describes relevant developments that took place roughly between 1900 and 1970. During this time, the efficacy of stimulant therapy for the disorder was established and the symptoms of ADHD were linked to many possible nervous system disorders including in the brain-stem, reticular formation, diencephalon, basal ganglia, frontal lobes, and cortex. In 1970, the catecholamine hypothesis of ADHD was proposed. It is concluded that early theories about the neurobiologic basis of ADHD anticipated core ideas of modern theory.  相似文献   
22.
Trace element compositions of 25 shards of Chinese Late Ming export blue-and-white porcelain from Zhangzhou and Jingdezhen kilns are analysed by Inductively Coupled Plasma Mass Spectrometry. Principle components analysis and REE distribution curves are used to establish method for provenance unknown Chinese export blue-and-white porcelain which may have originated from Zhangzhou or Jingdezhen kilns. By matching the REE distribution curves of Zhangzhou kiln samples and parent rocks of the possible clay sources used to make Zhangzhou blue-and-white, and comparing it with previous results of geological, geochemical and archaeological researches, the clay used for producing Zhangzhou export blue-and-white has been identified as having been collected from the weathered shells of a nearby potassium feldspar miarolitic granite outcrop.  相似文献   
23.
Abstract

This study presents the methodology and results of a core-periphery GIS model of the historical growth and spread of Islam in China based on a dataset of 1,774 mosques. These sites were organized into data subsets according to their founding dates during five major dynastic periods in Chinese history: Tang/Song, Yuan, Ming, Qing, and Republican. Core areas were identified and mapped based on where mosques clustered during each period. North China was the paramount core region in all periods. Not until the late Qing and Republican periods did the Northwest and Yunnan compare with North China, while coastal China never developed into a core area.  相似文献   
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25.
This study examines the linkages which connect Communism, heritage and tourism with reference to selected East Asian states which are governed by Communist regimes or have recent experience of Communist rule. Aspects of the heritage of Communism are seen to be of interest to tourists, but related visitor attractions also have a wider social and political significance and illustrate how tourism can be employed as a hegemonic tool and propaganda vehicle. Heritage, including that of Communism itself, thus serves as economic, social and political capital within a Communist context where the defining characteristics of government give rise to a distinctive relationship between political systems, heritage and tourism.  相似文献   
26.
The paper is concerned with the ways in which ethnic culture is presented and experienced by tourists with particular reference to two villages in China inhabited by members of the Miao minority group and popular with visitors. The study is based on qualitative and quantitative data derived from primary and secondary sources and findings reveal contrasts and similarities within and between destination residents and visitors regarding attitudes to tourism and its cultural impacts, especially in terms of authenticity. While the cases display unique features, their analysis affords more general insights into the characteristics of this particular form of heritage tourism and its consequences.  相似文献   
27.
Issues of heritage administration in the city state of Singapore are examined in the paper with specific reference to decisions about the designation of national monuments and conservation areas. The analysis reveals growing official interest in built heritage conservation for a combination of economic, socio‐cultural and political motives. However, commitment is constrained by the importance attached to economic development objectives and there is an emphasis on maximising the commercial potential of old buildings through adaptive reuse. Questions are also raised about the meanings of national identity and nationhood and the challenges of selecting and preserving structures which embody these concepts in relatively young and rapidly modernising countries.  相似文献   
28.
Singapore's multiculturalism is an important theme in the country's destination marketing and the paper explores the manner in which ethnicity is depicted in promotional material and the forces shaping the decision-making process. The nature of Peranakan culture, a unique synthesis of Chinese and Malay influences, is the subject of particular discussion and its actual and potential role as a tourism resource is analysed. State authorities are seen to exercise considerable power, making use of tourism images to reinforce political ideologies through the communication of messages about preferred versions of identities. However, tourism representations also convey something of the complex realities of identity in Singapore and perhaps can assist in increasing awareness of, and protecting, the cultural heritage of more marginalised groups. Insights are thus offered into the relationship between tourism and ethnic heritage in plural societies and its management.  相似文献   
29.
Geography and development   总被引:13,自引:0,他引:13  
Economic development and underdevelopment is one aspect of theuneven spatial distribution of economic activity. This paperreviews existing literature on geography and development, andargues that rigorous theoretical and empirical analysis is neededto increase understanding of the role of geography in developmentand to better design development policy. The analytical issuesare: why does economic activity cluster in centers of activity?How do new centers develop? And what are the consequences ofremoteness from existing centers? Empirical evidence comes bothfrom the international context and from studies of internaleconomic geography and urbanization.  相似文献   
30.
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