非公有制企业参与国土绿化在应对气候变化中的作用——基于辽宁、广东、四川三省的调研

在对辽宁、广东和四川三省非公有制林业企业案例调研的基础上,介绍了当前我国非公有制经济参与国土绿化建设的现状,分析了目前存在国家对非公有制经济政策扶持力度小、非公有制企业融资贷款难、生态补偿标准偏低利益缺乏保障等问题,提出积极推进非公有制企业参与国土绿化,在应对气候变化中发挥重要作用的政策建议。     

和田河流域土地资源可持续利用研究

和田河流域是干旱区沙漠中一条具有生态意义的河流,在短短半个世纪的时间里,生态环境发生了巨大的变化.由于气候状况和人类对和田河流域的开发程度加重,已引起上游山地冰川退缩、天然植被退化;中游绿洲耕地扩张迅速,土壤盐渍化,河渠人工渠化,水库增加显著;下游荒漠植被退化,水资源严重不足,土地沙化等生态环境问题,流域生态环境趋于脆...     

中德两国木质家具出口贸易的比较研究——基于1997--2009年数据的实证分析

通过1997--2009年的贸易数据对中德两国的木质家具出口贸易进行了比较研究。利用CMS模型测算了拉动两国木质家具出口增长的原因,进而通过显性比较优势指数和贸易结合度指数的测算,实证分析了中德两国各自具有比较优势的产品类型以及双边木质家具贸易的结合程度。结果发现,竞争力效应和一般增长效应分别是拉动中国和德国木质家具出口增长的主要因素,两国分别在不同种类的产品上具有比较优势且两国问的木质家具贸易结合程度不高,具有巨大的合作发展潜力。     

Stochastic efficiency analysis with risk aversion bounds: a correction

A recent paper by Hardaker et al. (The Australian Journal of Agricultural and Resource Economics, 48, 2004a, 253) and book by Hardaker et al. (Coping with Risk in Agriculture, 2004b) describe a procedure for determining an efficient set from among a set of random alternatives. This procedure, called stochastic efficiency with respect to a function (SERF), is claimed to make the same assumption concerning the risk aversion measures as does stochastic dominance with respect to a function (SDRF). This is claim is incorrect. SERF imposes an additional requirement on the risk aversion measures of the decision makers. Both procedures assume a lower and an upper bound on risk aversion, but SERF also assumes that all risk aversion measures are of the same functional form as these lower and upper bound functions. This additional strong requirement on risk preferences implies that the efficient set identified under SERF is usually smaller than that identified using SDRF.     

Agricultural holdings with undefined boundaries,communal systems and counter‐hegemonies: The persistence of the peasantry in Argentina

The presence of agricultural holdings with undefined boundaries (AHUBs) and their heterogeneous geographical distribution questions the supposed hegemony of agribusiness in Argentina. Given the lack of defined boundaries, these holdings generate a communal culture among dwellers, which is reflected in both the strategies of the use of commons and the initiatives for the defence of land in the conflicts between peasants and entrepreneurs. This article describes two counter‐enclosure experiences that were generated and have developed on the bedrock of AHUBs and a communal matrix. Those defence strategies are employed by families that possess the land but have not title to it, being a defence tactic against attempts of eviction. AHUB not only is a new census category that allows us to enhance our knowledge of the rural world but also proposes modes of production that differ from those of the capitalist model, showing possible counter‐hegemonic development alternatives that arise from the practices used in these holdings.     

习近平新时代中国特色社会主义思想的话语特质

习近平新时代中国特色社会主义思想作为当代主流意识形态,其话语特质对人民的美好生活具有深远的影响和强大的感染力,通过分析习近平新时代中国特色社会主义思想的话语特点,领略习近平新时代中国特色社会主义思想的语言魅力,有利于加深对马克思主义中国化最新理论成果的认知和理解。     

可持续生计视角下易地搬迁精准扶贫效果评价

易地搬迁是我国实施精准扶贫政策的重要手段之一。以湖北省十堰市龙韵村115户搬迁农户为研究对象,对其搬迁前后的生计资本、生计策略以及生计结果分别进行对比,分析政策实施对搬迁农户生计的改善情况,并通过移民农户对扶贫搬迁政策的满意度评价扶贫效果。结果表明:(1)易地扶贫搬迁促进了移民生计资本的增加,改变了农户生计策略,优化了贫困户整体生计结果,精准扶贫效果显著;(2)农户对易地搬迁扶贫政策效果的整体满意度较高,均值为3.71,提升了贫困户的获得感及幸福感;(3)易地搬迁可持续减贫仍存在一定的制约因素,需要防范返贫风险。     

An analytical model proposal to design urban open spaces in balance with climate: A case study of Gaziantep

A significant decline has been experienced in the quality of life of people living in cities due to the deterioration of the ecological balance, decrease in biodiversity, together with air, noise and water pollution occurring as a result of population growth and urbanization. All of these factors have triggered global warming, which is one of the biggest problems in recent years. For this reason, the climate has become one of the most important factors in urban design works. The purpose of the present study is to determine the microclimatic contribution of urban open spaces to the city in the context of climate-balanced physical planning criteria, and to propose an analytical model, which may constitute a basis for planning and design works. Firstly, the climatic requirements of the city of Gaziantep were examined by creating bioclimatic comfort maps. In the following stage, monthly wind roses were created by determining the dominant wind directions for the summer and winter seasons. Optimum location and directions that were balanced with climate were determined and slope and aspect maps of the area, land use types and area selection criteria were also created. In light of these data, ecological compatibility and feasibility maps were prepared. In the feasibility map, the temperature and humidity maps were created with ENVI-met, which is a climatic simulation software, for the most extreme days in an area where there were residential areas and educational institutions, multi-storey residential areas, working areas, social and open green areas, and afforestation areas. The results that were obtained with the simulations were subjected to Regression Analysis to determine the relationship among the climate parameters and the design criteria. As a result, the increase in the quantity of urban green spaces and equality on the spatial distribution of these areas will improve bioclimatic comfort (the warmest hour of the hottest period regression analysis’ result is β= -0.384). It has been determined that planning high-density plantation in green spaces and selecting dense and broad-leaved plants will provide a cooling effect (on average 2−3 °C less). Furthermore, adding more green spaces in cities will increase the thermal comfort within city blocks, especially where high-rise buildings are common. It is confirmed that high-rise buildings cause thermal stress (the warmest hour of the hottest period regression analysis’ result is β = 0.472). Hardscapes have a negative effect on the temperature (the warmest hour of the hottest period regression analysis’ result is β = 0.425). In addition to these data, it was found that the mean radiant temperature values, instead of temperature values, would yield more accurate results in microclimate analyses and interpretations.     

基于粗糙集的团购网站销售额影响因素分析

运用粗糙集算法,对所搜集的不确定甚至不完整的有关团购网站的信息进行推理,结论是：相对平均原价和团购种类,团购活动期数、购买人次、平均折扣率和热门城市数量对团购网站销售额的影响更重要;团购活动期数和购买人次越多,销售额越高;但平均折扣率和热门城市数量的多少对团购网站销售额的影响不大。可见,相对于价格,诚信在团购网站发展中起到更重要的决定作用;团购网站应通过团购导航网吸引更多的顾客,并实施差异化发展策略,进而以优质服务提高顾客的忠诚度。     

钢板筒仓风道筛板选型和安装工艺改进

为解决钢板筒仓风道筛板在使用过程中易造成风道内粉尘大量积聚、通风困难以及结构变形、维修困难且由此引起的一系列安全问题,本文通过改造筛板安装工艺、选用新型筛板,有效降低了风道内粉尘数量,增强了整体结构,维修更换效率更加高效,保障了仓内人员和设备安全.