Explore the vast range of titles available.

现阶段,中国动物园正在高速发展,管理理念也在随之改变,但是同国外先进管理模式和经营模式相比仍较落后,许多问题仍需要改善。英国动物园主要侧重于动物园种群的遗传育种,福利管理,保护教育等,而中国动物园则侧重于对某一物种的研究,国内对于英国动物园经营策略的研究很少。本文通过对英国动物园年度报告及网站数据实例分析得出:英国动物园收入来源多种多样,动物园品牌特色鲜明,会员制度收益高,笼舍及展区丰容水平高,保护教育课程发达,体验活动丰富,展区牌示科普及警示效果显著,员工比例协调等特点。从中吸取经验为中国动物园的发展提出建设性建议。

增硕立项是每个普通高等院校发展历程的必经之路,也是高等院校图书馆发展中的头等大事,其中充足的专业学科资源是增硕立项的必备条件之一,。笔者以增硕立项为切入点,从纸质资源、电子资源、信息服务、学科服务、信息素养教育等不同维度,全景扫描图书馆65年建设大数据,提出图书馆唯有在增硕之前做好充分资源保障体系的准备工作,增硕中对增硕立项提供学科资源的支撑分析数据报表,增硕立项后根据增硕结果的经验教训,重新优化学科资源配置或重新制定学科资源的发展规划方案,切实为院校的跨越式发展,如＂更名大学＂,＂水平评估＂、＂创建综合性大学＂的目标任务而奋斗。

通过对湖南地区200户农民用户进行了双季稻管理知识需求的调查分析,发现当前政府、高校及科研院所提供的知识服务渠道不能满足金融危机背景下返乡农民用户重新从事农业生产对农业知识的日益广泛和多样化的需要。针对知识服务组织机构建设滞后这一情况,提出了解决知识需求供给的策略——构建基于双季稻管理知识服务平台。

以东北农业大学图书馆馆藏电子资源为例，通过对近几年图书馆的经费投入总量和数据库投入的资金量与全国平均水平进行对比，并以CNKI数据资源总库为例，通过各类资源的下载总量以及农业类资源的下栽量等，具体统计数据进行分析，研究探讨文献的利用率和读者的需求等相关内容，为图书馆的资源采购和资源结构合理配置，提供科学的依据。

A bug tracking system provides a collaborative platform for the developer crowd. After a bug report is submitted, developers can make comments to supplement the details of the bug report. Due to the large number of developers and bug reports, it is hard to determine which developer（also called commenter） is able to comment on a particular bug report. We refer to the problem of recommending developers for commenting on bug reports as commenter recommendation. In this paper, we perform an empirical analysis on commenter recommendation based on five-year bug reports of four open source projects. First, we preliminarily analyze bug comments and commenters in three categories, the relationship between commenters and fixers, the data scale of comments, and the collaboration on bug commenting. Second, we design a recommendation approach via ranking developers in the crowd to reduce the manual effort of identifying commenters. In this approach,we formulize the commenter recommendation problem as a multi-label recommendation task and leverage both developer collaboration and bug content to find out appropriate commenters. Experimental results show that our approach can effectively recommend commenters; 41% to 75% of the recall value is achieved for top-10 recommendation. Our empirical analysis on bug commenting can help developers understand and improve the process of fixing bugs.

As the largest contributor to water impairment, agriculture-related pollution has attracted the attention of scientists as well as policy makers, and quantitative information is being sought to focus and advance the policy debate. This study applies the panel unit root, heterogeneous panel cointegration, and panel-based dynamic ordinary least squares to investigate the Environmental Kuznets Curve on environmental issues resulting from use of agricultural synthetic fertilizer, pesticide, and film for 31 provincial economies in mainland China from 1989 to 2009. The empirical results indicate a positive long-run co-integrated relationship between the environmental index and real GDP per capita. This relationship takes on the inverted U-shaped Environmental Kuznets Curve, and the value of the turning point is approximately 10,000–13,000, 85,000–89,000 and over 160,000 CNY, for synthetic fertilizer nitrogen indicator, fertilizer phosphorus indicator and pesticide indicator, respectively. At present, China is subject to tremendous environmental pressure and should assign more importance to special agriculture-related environmental issues.

Theoretic and practical significance has been highlighted in the research of the roles and functions of destinations, as destinations are restricted by the spatial structure based on tourist flow network from the perspective of relationship. This article conducted an empirical analysis for Tourism Region of South Anhui (TRSA) and revealed the necessity and feasibility of studying the roles and functions of destinations from tourist flow network’s perspective. The automorphic equivalence analysis and centrality analysis were used to classify 16 destinations in TRSA into six role types: tourist flow distribution center, hub of tourist flows, passageway destination, common touring destination, attached touring destination, and nearly isolated destination. Some suggestions were given on suitable infrastructure construction and destinations service designs according to their functions in network. This destination role positioning was based on tourist flow network structure in integral and macroscopic way. It provided an important reference for the balanced and harmonious development of all the destinations of TRSA. In addition, this article verified the applicability of social network analysis on tourist flow research in local scale, and expanded this method to destination role and function positioning.

This paper uses an extensive network approach to “East Turkistan” activities by building both the one-mode and the bipartite networks for these activities. In the one-mode network, centrality analysis and spectrum analysis are used to describe the importance of each vertex. On this basis, two types of core vertices — The center of communities and the intermediary vertices among communities — are distinguished. The weighted extreme optimization (WEO) algorithm is also applied to detect communities in the one-mode network. In the “terrorist-terrorist organization” bipartite network, the authors adopt centrality analysis as well as clustering analysis based on the original bipartite network in order to calculate the importance of each vertex, and apply the edge clustering coefficient algorithm to detect the communities. The comparative and empirical analysis indicates that this research has been proved to be an effective way to identify the core members, key organizations, and communities in the network of “East Turkistan” terrorist activity. The results can provide a scientific basis for the analysis of “East Turkistan” terrorist activity, and thus provide decision support for the real work of “anti-terrorism”.

This paper, concerning uneven development in China, empirically analyzes the core-periphery gradient of manufacturing industries across provinces （autonomous regions, municipalities）, and assesses the extent to which these provinces have changed in recent years. Since China＇s reform and opening-up, the spatial structure of the economy has pre- sented a significant core-periphery pattern, the core evidently skewing towards east-coastal areas. With the deepening of market reforms and expansion of globalization, industrial loca- tion is gradually in line with the development advantages of provinces. The core provinces specialize in those industries characterized by strong forward and backward linkages, as well as a high consumption ratio, a high degree of increasing returns to scale, and labor or hu- man-capital intensity. However, it is the opposite with regard to peripheral provinces, in addi- tion, energy intensive industries are gradually concentrating in these areas. To a certain de- gree, the comparative advantage theory and new economic geography identify the underlying forces that determine the spatial distribution of manufacturing industries in China. This paper indicates that the industrialization of regions along different gradients becomes unsynchro- nized will be a long-term trend. Within a certain period, regions are bound to develop indus- trial sectors in line with their respective characteristics and development stage. A core-periphery pattern of industries also indicates that industrial development differentials across regions arise because of not only the uneven distribution of industries but also the inconsistent evolving trends of industrial structure for each province.

This paper aims to examine the specific ways in which China＇s exports of manufactured goods to the United States boost the U.S. job market. Using the OECD STAN Bilateral Trade Database by Industry and End-use Category to calculate the share of U.S. intermediate products used in the manufactured goods China exports to the U.S., this paper finds that the ＂U.S. content＂ in China＇s exports of manufactured goods to the U.S. increases with the technology content of the goods and shows a decreasing trend over time. From 2006 to 2010, the average ＂US. content＂ in China＇s exports of manufactured goods to the U.S. was 1%, and such content in China＇s exports of high-end manufactured goods was 1.6%. On this basis and using the employment-output ratio in the U.S. Employment Demand Matrix, this paper concludes that as many as 1.71 million jobs have been created by the U.S. intermediate products used in China＇s exports of manufactured goods to the U.S. during the same period. Thus, the development of Sino-U.S. trade has a positive impact on the job market in the U.S.. By contrast, instead of improving the employment situation in the U.S., the RMB appreciation proposed by the U.S. might even have a negative effect.