旅游目的地供应链概念模型的构建

供应链的概念最初是为了解决企业内部各职能部门之间流通不畅、存货和能力配置不合理的问题而提出的,其后扩大到企业之间形成一个整体的功能网链结构模式。旅游供应链概念最早始于对分销渠道的分析,虽然随着旅游供应链实践发展的深入和理论探讨的增多,学者们从不同角度对其展开了深入研究,但目前在旅游供应链概念理解上尚未达成共识。本文从旅游目的地角度出发,结合对旅游供应链概念的分析和认识,提出了本文的旅游目的地供应链概念,并在对旅游目的地供应链构成主体进行分析的基础上。提出了旅游目的地供应链概念模型,以期对旅游目的地供应链建设有所帮助。     

中国旅游业地域不平衡分析

由于多种因素:中国自然地理条件、社会历史文化、经济状况等的区域差异,使我国旅游业表现出地域差异。因此本文根据三大地区的划分,着重比较了各地区的供给与需求的差异,并分析了其差异性的根源。在旅游供给的地域不平衡部分,对旅游供给的四个部分:旅游资源及其开发阶段与趋势、旅游设施、旅游服务、旅游基础设施进行分析。在需求的地域不平衡部分,对国内旅游、海外旅游、出境旅游逐个进行了分析。最后提出了我国区域旅游业发展的策略。     

基于人牙结石的淀粉粒证据探讨裴李岗遗址先民植物性食物来源

人牙结石淀粉粒分析是开展古代居民食物来源研究的有效途径之一。用此方法对河南新郑裴李岗遗址仅存的两具裴李岗文化人骨牙齿上的结石开展了淀粉粒分析,成功提取出38颗淀粉粒,其中可鉴定种属的淀粉粒主要来自于栎属、豆科和块茎类等非农作物,少量有可能来自于粟黍类作物。虽然分析样品较少,提取出的淀粉粒数量不多,但这一结果或许表明采集植物有可能构成了裴李岗遗址居民植物性食物的主体。结合贾湖、莪沟、石固和寨根等裴李岗文化遗址的植物考古学研究,裴李岗文化居民的食物结构具有广谱性特征。本研究为全面认识中原地区裴李岗文化居民食物构成和聚落生业经济,深入探讨中原地区早期农业形成过程等提供了新思路和新证据。     

Going Against the Grain: Why Do Canada and the United States Market Wheat So Differently?

At the turn of the twentieth century, private grain exchanges settled the daily prices for North American wheat. By the end of the Second World War, the Canadian and US governments had intervened significantly in these markets. The Canadian government required farmers in its western provinces to deliver their product to the Canadian Wheat Board (CWB), a single-selling-desk agency that, by then, had supplanted private wheat marketing in western Canada. Meanwhile, the United States government subsidized farm incomes with domestic-use taxes and import tariffs, but otherwise preserved private wheat marketing. In this article, I demonstrate that these disparate agricultural policies were broadly defined by immutable economic realities imposed on each country by global wheat-trade patterns and triggered by unprecedentedly severe agricultural crises. That is, amidst the precipitous fall in wheat prices in the early 1930s, each government crafted farm-support policies that reflected its domestic-consumption share of wheat production and the importance of wheat to its overall economy.     

Agricultural Development and Household Incomes in Central Asia: A Survey of Tajikistan, 2003-2008

Two noted specialists on the agricultural economies of the former Soviet Union examine the effects of land reform on agricultural production and the income of rural house-holds in Tajikistan. The authors utilize official government statistics to discern trends of agricultural output at the national level, and the results of three extensive surveys conducted in 2007-2008 (N > 2,000) and one in 2003 (N = 4,000 respondents) by international organizations (United Nations Food and Agriculture Organization, Asian Development Bank, the U.S. Agency for International Development, World Bank) to identify household-level changes. They also review the legislative framework for agrarian reform in the country; examine national-level trends in farm structure and organization, livestock production, farm productivity, and cropping patterns; and analyze shifts in size of land holdings and rural family incomes at the household level. Journal of Economic Literature, Classification Numbers: D130, O130, P320, Q150. 11 figures, 10 tables, 42 references.     

Food Security and Russia's 2010 Drought

An American specialist on Russia's agricultural sector examines the progression and impact of that country's 2010 drought (the worst in a half-century), leading to a grain harvest one-third smaller than originally forecast. A particular focus is on the country's grain reserves and the government's response to drought in such areas as grain export policy and maintaining the size of the domestic livestock herd, responses which the author argues are conditioned by the drive for food security, a concept that has dominated the political discourse in tandem with resurgent economic nationalism during the post-Soviet period.     

Manufacturing mainframes: component fabrication and component procurement at IBM and Sperry Univac, 1960–1975

In the golden age of mainframes (1960–1975) one of the foremost issues facing mainframe computer firms was manufacturing – despite this fact, system design has received nearly all the attention of scholars to date. The greatest manufacturing concern of these mainframe producers was component technology: the selection and provision of memory, especially main memory. As this period progressed, semiconductor memory was coming to dominance. Increasingly, firms' performance in the expanding market for mainframes pivoted on their memory component decisions. International Business Machines (IBM) had become the dominant mainframe producer, and its particular response to the semiconductor memory challenge has taken the role as the default or natural position. A comparison of IBM's experience with that of their fiercest mainframe rival during this period, Sperry Univac, highlights the centrality of memory components to the overall mainframe business as well as the highly contingent and path‐dependent nature of the particular semiconductor policies and practices adopted by firms.     

从考古发现看先秦时期城市的给水与排水

先秦时期城市的给水主要来源有两个,一是凿井取水,二是穿渠引水。井水水质纯净,渠水水量较大。城市的排水主要依靠管道将城中的雨水和生活废水排往城外的护城河中。     

上海青龙镇遗址出土瓷器和砖瓦样品热释光特性研究

利用热释光测定年代技术对青龙镇出土样品的烧造年代进行检测分析,以求帮助了解不同历史时期青龙镇瓷器贸易的发展状况。为此,本工作以青龙镇遗址出土瓷器中的67件瓷片及4件砖瓦样品为研究对象,用热释光前剂量饱和指数法测定瓷片样品古剂量;用热释光高温细颗粒技术测定砖瓦样品古剂量;用厚源α粒子计数法和X射线荧光光谱技术测量样品年剂量。瓷片样品热释光年代结果从唐代至南宋不等,砖瓦样品年代结果为北宋时期烧造,与文献记载中隆平寺塔的始建时间相符。     

Problematising the Historic Environment Record: Comments on Persistent Issues in England and Sweden

ABSTRACT

As a mainstay of local and national cultural heritage management, historic environment records play an effective role in the dissemination of data, particularly in the modern development control process. However, despite their functionality and sustained professional use, these inventories are not unproblematic, particularly in regards to informal usage. Based on the author’s professional experience this article will discuss some of the issues which convolute the delivery of historic environment data. These issues can be grouped thematically beneath the banners of fragmentation, interoperability, and accessibility. Underpinning these three topics is the relationship between historic environment records as institutions and digitality as both a cognitive process and a distribution mechanism. From a critical perspective, the extent to which these issues reoccur and inhibit the flow of data will be highlighted by examining the historic environment practice in England and Sweden in the hope that these insights can inform the contemporary approach.