21世纪中国农业水资源利用

一、中国水资源现状 (一)中国水资源供给 中国是一个水资源相对贫乏的国家。中国水资源年径流量仅为27110亿立方米,人均年径流量仅为2151立方米,比世界平均水平的1/4还要低。中国北部地区尤其缺水,人均年径流量仅为750立方米。海滦河流域水资源尤其匮乏,人均年径流量仅为355立方米,淮河、黄河流域稍高,但仍远低于国际可接受的1000立方米水紧张下限。     

Experimental dramas: Prototyping a multiuser negotiation simulation

This article describes the use, in prototype form, of a distributed system for simulating negotiation. Participants are provided with a common initial model of a situation, in this case an industrial relations dispute. They then communicate with each other via e-mail before each side commits itself to a particular choice of strategy. The system is considered both as a means of investigating conflict behavior in general (including possible use as a training device) and as a means of testing specific hypotheses about emotion and preference change.     

Development of the Voluntary Simplicity Engagement Scale: Measuring Low-Consumption Lifestyles

Journal of Consumer Policy - Those who choose to reduce their material consumption to seek satisfaction in non-material ways are said to be living a life of voluntary simplicity. This lifestyle has...     

A capital assets framework for appraising and building capacity for tourism development in aboriginal protected area gateway communities

Tourism may constitute an important livelihood option and conservation incentive for communities located near protected areas (PAs). Gateway communities can benefit significantly from the development of tourism through increased employment, financial gains, infrastructure creation, cultural revitalization, and environmental protection. Yet, tourism is not a panacea for PA communities and the development of a local tourism industry often fails to deliver significant economic, social, cultural, and environmental benefits. Clearly defined frameworks for maximizing the benefits from tourism development for PA communities are needed so that tourism can more directly support community development and conservation efforts. This paper presents a framework for appraising and building community capacity for tourism development in aboriginal protected area gateway communities. The framework was developed through the analysis of qualitative results from five different research projects around seven capital assets (i.e., natural, physical and built, financial, political and institutional, social, cultural, and human capitals). Preliminary results from application and testing of the framework are also explored. The framework presented herein has significant potential for broader application in non-aboriginal, international, and non-protected area communities.     

Filtration enlargement-based time series forecast in view of insider trading

This survey reviews filtration enlargement models in view of insider trading. Although filtration enlargement aptly models insiders' informational advantage, the theoretical results have not attracted the attention of the empiricists, owing mainly to the lack of a bridge transforming the results to testable hypotheses, and/or the absence of econometrics method linking the hypotheses and the data. This survey provides a feasible avenue to estimate insider information and to detect trading from a relatively sophisticated theoretical model, where the dynamics of publicly available data (e.g., stock price) implies insider information before the information is completely digested. We complete the survey with an empirical illustration based on simulated data.