农户行为层面生态环境问题研究进展与述评

采用文献回顾法和归纳法,从研究内容、研究视角、研究区域、研究方法和手段、数据获取等方面对农户层面生态环境问题的相关研究进行梳理与分析,最后总结了现有研究存在的问题,并探讨了未来农户层面生态环境问题研究发展的方向。主要结论如下:(1)研究内容涉及农户行为引起的农业环境问题类型、农户行为的生态环境效应、农户环境保护行为与生态建设行为、农业环境保护政策创新等方面;(2)研究视角主要包括以农业生产行为决策者农户为中心内生视角和以农户需求与以农户行为为出发点的外部视角,研究区域主要集中在经济发达地区;(3)在研究方法方面,早期主要是采用一般描述、定性分析和"事前"估计法,近年来"事后"计量模型的研究逐步增多,趋于多样化和综合性;(4)数据获取主要是农户问卷调查和参与式农村评估方法;(5)今后研究应加强农户行为对环境影响的定量评价与跟踪研究、农户环境保护响应决策机制、基于农户行为的环境政策设计等方面的研究,在数据获取方面,应将地理空间信息与问卷调查、社会经济状况结合起来,并进行农户行为与生态环境变化的长期跟踪。     

Relationships among healthy lifestyle beliefs and body mass index in urban China

Consumption is a major driving force in China's economy. The consumer society is particularly emerging in the more urbanized and affluent regions in China. Given the rise of consumerism on the one hand, and the rise of overweight and obesity on the other, this study explored whether the proliferating consumer culture is a threat to the traditional health culture in China. The lifestyle‐oriented approach used in this study does not confirm a straightforward relationship between an upward trend in Chinese with (economic) assets to join the consumer society and a downward trend in health interest among urban Chinese. The result that the rise of the consumer society is not directly accompanied by a devaluation of health issues does not imply that lifestyle research is of no use. On the contrary, this paper successfully identified four dimensions of health‐related lifestyle for urban China, namely Food‐health Belief, Perceived Knowledge, Health Careless and Group Conformity. This result is informative with respect to the complexity of sociocultural factors influencing the increasing prevalence of overweight and obesity.     

株洲商业地产发展浅析

商业地产涉及到集中商业、专业市场、街区商业、社区商业四种类型。株洲作为典型的三线城市。四种商业类型发展大相径庭。纵观株洲的商业地产开发。部分企业在没有了解商业地产的特性和株洲城市属性的情况下就盲目开发。最终面临经营惨淡的局面。株洲市在今后发展商业地产过程中。应加强对“集中商业”后期统一运营管理;在“专业市场”方面必须开拓市场。做大交易额;在“街区商业”方面要引导商家,形成主题;在“社区商业”方面,要合理规划,控制布局。     

河北省利用外资的成效和对策

河北省利用外资已走过了 2 0年的历程。 2 0年来 ,外资在河北的经济建设中发挥了重要作用 ,收到了突出的成效。但由于河北软、硬环境的限制 ,河北利用外资的水平还不高 ,不能满足河北经济发展的需要 ,应采取有效的对策 ,更好地利用外资。     

ANTI-POVERTY EFFECTIVENESS OF THE MINIMUM LIVING STANDARD ASSISTANCE POLICY IN URBAN CHINA

Since its inception 15 years ago, the Minimum Living Standard Assistance (MLSA) has served as a last resort for China's urban poor. Using national household survey data, this study provides updated evidence on the participation rate, receipt amount, and anti-poverty effectiveness of MLSA. Families eligible for MLSA make up 2.3 percent of the urban population, but only about half of them are actual beneficiaries. City MLSA generosity and household entitled benefit amount both positively correlate with participation rate and household receipt amount. MLSA lowers the poverty rate somewhat, but substantially reduces the poverty gap and severity for its eligible participants. Nevertheless, the poverty reduction role of MLSA is restricted by its partial coverage and delivery. Consequentially, poverty remains a serious problem for MLSA's target population. The anti-poverty effectiveness of MLSA can be strengthened by full coverage and delivery of benefits and by paying special attention to disadvantaged subgroups.     

统计推断中的Fuzzy信息

本文以一个正态总体均值的假设检验为例,说明统计推断中一般存在有 Fuzzy 信息,并揭示了 Fuzzy 信息的作用。首次指出了对统计推断结果进行Fuzzy 信息分析的必要性。     

优化出口贸易结构 建设沿海经济强省

河北省拥有487公里的海岸线，秦皇岛港、唐山港和黄骅港三大港口分布在渤海湾，具有一定的沿海区位优势。但是，由于长期以来缺乏沿海开放意识，河北省实际上已经错过了以“三来一补”为主要形式的初级出口导向型发展阶段。在中央提出要创新引进外资方式、进一步优化出口贸易结构的方针下，河北省必须站在更高的起点上，     

一种数字丝悬式垂直磁力仪传感器的研制

本文根据我国现有的机械式丝悬垂直磁力仪的结构，提出了将其政装为数字化丝悬式垂直磁力仪的差动式电容传感器的设计方案。样机测试表明，其测量精度可与ＭＰ—４型质子磁力仪相媲美．具有结构简单，易掌握操作，成本低等优点．