不同类型农户土壤保护认知及行为决策研究——以江汉平原368户农户调查为例

利用江汉平原农户调查数据,运用二元选择模型分析不同类型农户土壤保护认知与行为决策。结果表明:不同类型农户的土壤保护认知水平存在差异,且农户的土壤保护认知与其行为决策之间的差距较为明显;户主教育程度、农户土壤保护认知与耕地块数是影响所有类型农户土壤保护行为决策的显著因素;是否租入土地与接受农业技术培训对纯农户土壤保护行为有显著影响;人均耕地面积对I兼农户有显著影响;户主是否兼业与家庭非农就业比例对II兼农户有显著影响;户主年龄对III兼农户有显著影响。由此提出建议:提高各类农户土壤保护认知,缩小农户行为决策与认知差距的关键在于加强土壤保护知识与技术的宣传,培养农户土壤保护意识与技能,并通过土地整理等措施为农户采取土壤保护行为提供便利条件,在保障各方收入来源的基础上,引导土地从III兼农户向专业经营户流转。     

母系家园(英文)

这是一个28户人家的小村庄,坐落在川滇两省交界处崇山峻岭中,至今尚没有道路能够通达。它是当年茶马古道的必经之路,小村子也因此得名——里加咀(摩梭语译音),摩梭语的意思是"中间休息的地方",或"灵魂聚集的地方"。这个鲜为人知的小村庄,堪称早期母系氏族的缩影。     

再谈并列双音词的字序

本文在声调决定并列式双音词字序的前提下 ,对声调所无法解释的 135个并列式双音词进行详细的量化分析 ,根据每个词产生时代的语音特点 ,探求字序排列的原因 ,得出并列式双音词的字序受元音舌位高低和谐规律制约的结论 ,进而解释了声调规律所无法解释的一些问题     

Climate change and non-migration — exploring the role of place relations in rural and coastal Bangladesh

Population and Environment - Of growing research and policy interest are the experiences of people living under conditions of climate change–induced environmental stress, which either are...     

Mapping of noise impact provoked by the execution of foundation piles at high rise building sites

The objective of this work is to map, in a limited area inside and outside of the worksite, the environmental impact generated by sound pollution coming from the driving of foundation piles for high rise buildings, as well as to observe and check if the noise levels produced by the emitting source are tolerable in the urban environment. The methodology of the work includes a survey of technical references about the subject; measurement of noises surrounding the worksite during the foundation phase for four distinct buildings, with different types of piles: prefabricated piles, continuous helical displacement piles , traditional compaction piles and Terra Probe compaction piles. A grid of points was built due to the time of driving and after that the measurements of environmental noises were performed emitted by the execution of each type of pile using a sound level meter. The interpretation of the measurements and their impacts on the neighborhood of the building were performed using the computational tool Suffer for creating noise level contours. The X and Y axes of the grid represent the distances in meters of the area studied and the Z axis represents the noise measured in dB. The contours developed represent the mapping of the noise at the worksites and their surroundings. The mapping of the urban impact of noise, the measurement of its dimensions, and the examination of its propagation around the building are important subsides to adequate individual and collective protection procedures. Seventy one points were measured at four building sites with different types of piles, and the results showed that at only three points was the noise within the limits of the Municipal Law of Recife of 70 dB, which proves the relevance of the research. Finally, the comparative analysis between the four types of piles shows that the continuous helical displacement pile emits the lowest noise level among the four pile types studied.     

时间与空间：科学民族志的叙述学分析

从叙述时间的四个关键概念一停顿、频率、时序、共时性，叙述空间的三个层次——自然空间、社会文化空间和文本空间入手，探讨中国科学民族志叙述时空的特点，以发现其异于西方民族志和后现代实验民族志的独特价值。     

基于低碳旅游理念的创意农庄项目开发初探

低碳旅游是一种降低"碳"的旅游,也就是在旅游活动中,旅游者尽量降低二氧化碳排放量。休闲农庄资源规划与开发应以生态优先,可持续发展为第一指导原则。在具体的项目开发建设中要注重妥善解决开发所带来的环境破坏和污染,采取必要的生态措施和技术改善林网、水系、田园的农业生态环境,培育绿色产业,繁荣传统文化,构成绿色产业体系。把"绿色生态文明""可持续发展"融入各项目区的规划建设之中,高度重视资源保护和文化传承,充分发挥农业、农村、农民的生态和文化优势,吸引游客观光休闲和精心体验,避免盲目开发、无序开发和破坏性开发,走资源节约型,环境友好型的可持续发展道路。     

从元明清时期彝族法律纠纷解决机制的变迁看国家与其互动关系

元明清时期中央王朝的正式的法律纠纷解决机制、彝族地区固有正式法律纠纷解决机制的变迁,是一个不对称的互动过程。在中央王朝对彝族地区基层社会的统治不断深入的同时,彝族地区基层社会特殊的纠纷解决机制也增加了中央统治者对彝族地区的治理经验,丰富了中华法系,特别是中国少数民族法律的内容。     

Risk evaluation and exposure control of mineral dust containing free crystalline silica: a study case at a quarry in the Recife Metropolitan Area

During the production of aggregates at quarry sites, elevated quantities of micro-particulate mineral dust are produced in all stages of the process. This dust contains appreciable amounts of free crystalline silica in a variety of forms which, if maintained suspended in the air in the work environment, expose the workers to the risk of developing occupational silicosis, which causes reduced ability to work and potential shortening of lifespan. This study was conducted to qualitatively and quantitatively evaluate workers' exposure to mineral dust containing free crystalline silica at a midsized quarry in the Recife metropolitan area, in the State of Pernambuco. It involved evaluation of the industrial process, collection and analysis of representative dust samples, and interviews with the management team of the company with the intent to assess the compliance of the company with Regulatory Standard (NR) 22--Occupational safety and health in mining. In order to assist the company in managing risks related to dust exposure, three protocols were developed, implemented and made available, the first based on NR 22, from which the company was also given an economic safety indicator, the second based on the recommendations and requirements of Fundacentro to implement a Respiratory Protection Program and, finally, an assessment protocol with respect to the guidelines of the International Labor Organization to implement a health and safety management system. This study also showed the inadequacy of the formula for calculating tolerance limits in Brazilian legislation when compared with the more strict internationally accepted control parameters. From the laboratory results, unhealthy conditions at the quarry site were confirmed and technical and administrative measures were suggested to reduce and control dust exposure at acceptable levels, such as the implementation of an occupational health and safety management system, integrated with other management systems. From these assessments it is hoped that the proposals can assist the company in developing mechanisms for management and control of dust exposure risks that may improve environmental quality and the well-being of workers.