A geography of ecotourism in Cambodia: regions,patterns, and potentials

Tourism visits to Cambodia have expanded rapidly, with over 5 million visitors arriving in the country by 2016. Angkor Wat remains the primary tourist attraction, but increasing numbers of tourists also visit ecotourism destinations. This study draws on Weaver’s [(2002). Asian ecotourism: Patterns and themes. Tourism Geographies, 4(2), 153–172] spatial and structural analysis of ecotourism in Asia as an organizing framework to develop a geography of ecotourism in Cambodia. In a comprehensive review of academic publications, reports, online ecotourism clearinghouses, and project websites, 30 Cambodian ecotourism sites were identified based on 5 ecotourism criteria. A content analysis of ecotourism project websites was then conducted to group together ecotourism sites with common characteristics in particular geographic regions. Each site was plotted on a Google Terrain map, and local and regional terrain, land cover, transport, and other physical features were analyzed, supplemented by detailed geographical data from Google Panorama, Earth, and Satellite map functions. Three relatively distinct ecotourism regions were identified: the (a) mangrove and rainforest region, (b) highland trekking region, and (c) wetlands and waterways region. For each region, tourism gateways and ecotourism development challenges and potentials are elaborated. The paper concludes with a discussion of study findings and their implications for ecotourism development in Cambodia.     

制动器拉杆断裂的原因及对策措施

通过对门机起升制动器拉杆断裂现象的分析，提出解决方法、对起升制动器拉杆进行改造，消除门机由于拉杆断裂引起的故障，减少了停工损失。     

MEASUREMENT,EVOLUTION, DETERMINANTS,AND CONSEQUENCES OF STATE CAPACITY: A REVIEW OF RECENT RESEARCH

There is increasing realization that state capacity is a fundamental ingredient for effective governance, and is a crucial element of long‐run economic development. This paper offers an overview of the strengths and limitations in current empirical research on the measurement of state capacity. The paper also surveys the fast emerging literature on the determinants and effects of state capacity. We argue that existing measures on governance quality used in cross‐national research can be usefully exploited to capture different aspects of state capacity, and show that post the end of the Cold War, developing economies have experienced improvements in legal, administrative and bureaucratic capacity, but the gap with advanced economies is still wide. Future research should address the short temporal coverage of available measures of state capacity, as well as providing a systematic quantitative assessment of the determinants of capacity and of its effects on development outcomes, such as health and education, which have not received sufficient scrutiny.     

Modeling Jumps and Volatility of the Indian Stock Market Using High-Frequency Data

Recent advancements in technology have led to wide availability of high-frequency financial data. The aim of this paper is to study the behavior of the Indian stock market. In particular, we analyze the returns at 5 min interval from NSE using the index NIFTY and the stocks State Bank of India and Infosys. A non-parametric approach is taken to detect jumps in the return process. The analysis shows that index jumps relate very closely with the general market news and announcements while individual stock jumps are associated with company specific news. We find that volatility of the market is best captured by asymmetric power ARCH models.

     

我国风力发电的环境价值分析

风能是一种可再生能源,在当前能源短缺的时代扮演了重要角色。考虑量化风力发电的环境价值,提出风电环境价值的构成,并选取相关指标,运用环境经济学相关理论对风电的环境价值进行评估。风力发电环境价值的测算是相对于常规煤电的。为了量化风力发电在减少环境污染方面的作用,先对火电厂主要污染物的排放量进行计算,然后制定各主要污染物的环境价值标准,最后以500MW火电厂为参照,计算我国风力发电的环境价值,其结果为0．1491元／（kW·h）,而我国天然气发电的环境价值仅为0．0896元／（kW·h）,相比之下,我国风力发电的环境效益相当显著。     

液压CAT系统测试误差分析

本文对液压CAT技术的发展现状和趋势进行了探讨,并对液压元件CAT系统误差来源进行了分析,介绍一些液压CAT系统误差处理办法。     

运输包装尺寸标准化研究

通过对运输包装尺寸标准化以及国内外运输包装尺寸系列状况的论述,阐明了运输包装尺寸标准化的重要意义,重点分析了运输包装尺寸系列制定的方法和流程。为运输包装标准化尺寸的制定提供了理论依据。最后提出了基于运输包装尺寸系列的运输包装标准化尺寸取用模型,为运输包装尺寸标准化提供方法依据,促进物流运输行业的规模化、标准化进程。     

关于财政职能理论的反思

中国财政职能理论经历了作用观、功能观和职责观等三个发展阶段。这既与财政职能范畴的特殊性有关,也与财政所处宏观环境及职能实现方式有直接联系。研究财政职能问题应注意职责和功能两个层次,通过纵向分析把握财政的功能,通过横向分析把握财政的职责,使抽象的功能体现为具体的职责,实现职责和功能的统一。西方财政职能理论和中国传统财政职能理论各有得失。一般意义上的财政职能体现为满足社会公共需要,在市场经济条件下则体现为矫正市场失灵。