从以专家为主导到以农民为主导的实地研究

参与式理念已经成功地应用于许多农业发展项目,在农业研究项目中我们尝试应用以农民为主导的实地研究方法。在外来者的参与下,由农民讨论和制定研究计划,由农民实施和管理研究项目。实践证明,以农民为主导的实地研究,完全符合当地的自然和社会条件,产生了良好的社会经济效益。     

从森林环境经济核算看林业对国民经济的贡献——《联合国粮农组织林业环境与经济核算指南》案例研究

以吉林省吉林市丰满区和蛟河市为案例,运用联合国粮农组织《林业环境与经济核算指南》,对林地和林木资产实物量与价值量、林产品及森林环境服务价值流量核算;估算森林为国民经济其他部门及区域提供的产品和服务价值;通过120户农户家庭抽样调查估算森林为农户家庭带来的产品价值和收入。核算结果较为客观、准确地反映了林业对国民经济和社会发展的贡献,可为制定有利于林业可持续经营的政策提供参考。     

我国油茶产业发展现状及对策——湖南、浙江调研报告

介绍了湘、浙两省油茶产业发展的曲折道路,总结了近年来在发展油茶产业所取得成效和经验。主要包括加强领导,科学规划,政策扶持,优良品种推广,规模集约化经营等。目前,两省油茶林面积为131.8万hm2,单位面积产油量在70～80kg/hm2,年总产油约11万t。在分析了目前所存在的问题和今后发展潜力的基础上,提出改革对策与建议。     

我国林业生物质能源发展相关政策概述

介绍了我国林业生物质能源发展的背景、现状和相关的政策,以及林业生物质能源相关的法律、能源林建设规划、相关的产业规划和财税扶持政策。提出今后我国林业生物质能源发展相关建议。     

微波带状线低通滤波器的设计制作与性能改善

讨论了带状线低通滤波器因实际制作的导带宽度发生变化引起滤波器性能下降时,如何改善滤波器性能的方法。我们采用惠普公司ＥＥＳＯＦ软件,对滤波器的结构和电气参数和分别作了灵敏度分析,以此为改善滤波器性能的依据。经实验对比,改进后的滤波器性能有了明显改善,且性能稳定。     

Adoption of farm‐based irrigation water‐saving techniques in the Guanzhong Plain,China

This article analyses adoption of farm‐based irrigation water saving techniques, based on a cross‐sectional data set of 357 farmers in the Guanzhong Plain, China. Approximately 83% of the farmers use at least one farm‐based water‐saving technique. However, the traditional, inefficient techniques border and furrow irrigation are still prevalent whereas the use of advanced, more efficient techniques is still rather rare. We develop and estimate an adoption model consisting of two stages: awareness of water scarcity and intensity of adoption. We find that awareness of water scarcity and financial status enhance adoption of more advanced techniques whereas access to better community‐based irrigation infrastructure discourages it. We furthermore find both community‐based irrigation infrastructure and farm‐based irrigation water‐saving techniques have mitigating effects on production risk. From the results it follows that adoption can be stimulated via financial support and via extension aimed at enhancing awareness of water scarcity.     

The impacts of governance and institutions on inbound tourism demand: evidence from a dynamic panel data study

This study explores the impact of governance and institutions on inbound tourism demand in Malaysia using a dynamic panel data approach for 45 tourism source countries over the period 2005–2015. The results show that institutions play a very important role in explaining the behaviour of inbound tourism demand. To obtain a better picture, we investigate the response of international tourists to disaggregated institutional quality. We find that international tourists are more concerned about political stability, governmental effectiveness, regulations, laws, and corruption than voice and accountability. Therefore, policymakers should focus on ways to improve institutional quality to significantly increase international tourist arrivals.     

Job stress and well-being of female employees in hospitality: The role of regulatory leisure coping styles

The job stress and coping behavior of female employees has become a key issue in the hospitality industry. This study investigates the moderating role of regulatory leisure coping styles on the effect of job stress on female employees’ well-being. Specifically, this study extends Patry et al.’s (2007) findings to further confirm the direct and moderating role of regulatory leisure coping styles in the relationship between job stress and well-being. Data were collected from the female employees of 22 tourist hotels in Taiwan. The results showed that the Planned-Breather Leisure Coping Style (PBLCS) was positively and significantly associated with well-being, whereas the Avoidant Leisure Coping Style (ALCS) had a negative and significant effect on it. In addition, the results also revealed that the PBLCS plays a buffering role, but that the ALCS plays an amplifying role. Based on these findings, the implications and research suggestions are then discussed.     

絮凝沉淀去除马铃薯淀粉加工废水中蛋白的试验研究

采用絮凝沉淀法去除马铃薯淀粉废水中的蛋白质。经过方案比选．最终选择聚丙烯酰胺作为絮凝剂,结果表明：在聚丙烯酰胺投加量为70mg／L,pH值为5,温度为20℃,反应时间40min的最佳工艺条件下。采用聚丙烯酰胺絮凝沉淀法对马铃薯淀粉加工废水中的COD、蛋白质、BOD、SS都有一定的去除效果。COD的去除率保持在30％～40％,蛋白质的去除率保持在45％～55％,BOD的去除率保持在10％-15％．SS的去除率保持在50％-60％,大大减轻了后续处理构筑物的负担。     

港口集装箱运输与腹地经济发展

港口集装箱运输与腹地经济发展是一种互动关系.港口集装箱运输的发展主要取决于腹地内集装箱的生成量和运输条件、运输费用等方面.同时,集装箱运输对腹地经济的发展也正在发挥着越来越重要的作用.本文主要选择上海、天津、广州、青岛、大连、宁波、深圳等亿吨港口为研究对象,从集装箱吞吐量、港口吞吐量以及腹地经济发展的角度,分析港口集装箱运输与腹地经济的互动及其变化趋势、现存问题,并提出互动发展的对策.