The effectiveness of information interventions to improve domestic food safety among rural consumers

Consumer education on food handling behavior is regarded as an effective method to improve domestic food safety and prevent foodborne illness, but is usually overlooked in rural areas. Using a presurvey and two rounds of postsurveys targeted at rural consumers from China included in a randomized controlled trial, this study investigated the effectiveness of two information interventions—a leaflet with tips for best practices and the leaflet plus consumer education sessions conveyed by phone—and compared them with a control group. Cloth use behavior was the target in the trial and five specific aspects were evaluated: (1) whether the cloth was made of old clothes, (2) whether the one used to clean kitchen tables was also used to wash dishes, (3) whether it was hung to dry, (4) how it was disinfected, and (5) how long the cloth was used before being discarded. Firstly, consumers' behavior was scored by summing the above-mentioned five behaviors. The results estimated using the difference-in-difference model showed that respondents in the leaflet-only group improved to a greater extent than those in the control group, but their difference in progress was not statistically significant until the second round of the postsurvey. Respondents in the leaflet-plus-phone group were quicker to adopt suggested practices and made discernible improvements compared with those in the leaflet-only group in the first round of the postsurvey, but the gap between these groups narrowed to statistically insignificant in the second round of the postsurvey. It was concluded that one consumer education session was effective and made a difference in the long term, whereas more education sessions produced normative behavior at faster rates, showing a significant improvement in the short term. Then, the study estimated the effectiveness of interventions on the five specific behaviors separately. The results were estimated using a probit difference-in-difference model and showed that the suggested behaviors with lower costs or a greater difference from past behaviors were more likely to be adopted by consumers. Consumer education facilitates proper food handling practices among rural households, which should be considered by policy makers.     

有激情的员工更能创新吗

员工创新绩效是衡量企业创新能力的重要标准。以创造力交互作用观为理论框架,从认知视角考察员工和谐型激情通过创造力自我效能感对创新绩效的作用机制及相应的情境机制。对492份问卷分析发现：和谐型激情对员工创新绩效有正向预测作用;创造力自我效能感中介了和谐型激情与创新绩效的关系;创新氛围感知既调节了和谐型激情与创造力自我效能感的关系,又调节了创造力自我效能感在和谐型激情与创新绩效之间的中介作用。研究结果揭示了员工情感与认知对提高创新绩效的重要意义。     

延迟退休年龄:研究进展与若干争议

延迟退休年龄的政策取向在学界引起了广泛争议,焦点主要集中在延迟退休年龄是否会造成"就业挤出"效应及挤出效应的大小、延迟退休年龄是否会改善养老金财务状况。梳理争议各方所得结论的逻辑起点、研究方法、理论基础乃至学科视角将为进一步的理论研究和政策制定提供共识基础和新的切入点。     

The China model view is factually false

ABSTRACT

Using a cross-regional analysis of China, this article shows that the China model view is factually false and the universal model view is factually true. It is the marketization and development of non-state sectors, rather than the strong power of government and the state sector, that have driven the Chinese economy to grow fast and to be increasingly innovative. If China wants to sustain its economic performance, it must stay on the way to continuing marketization. Otherwise, China will fall into stagnation.     

一种有限元并行共轭梯度算法在计算力学中的应用

本文以POSSION方程为研究背景,实现了有限元的并行计算.通过对定解区域进行特殊的划分,达到了不需合成结构刚度矩阵的目的,并在此基础上应用线性方程组的共轭梯度法,使计算的并行性得到了很好的拓展,实现了从网格划分、刚度矩阵的合成到方程求解的并行执行.并将该算法应用在计算力学中.程序在西北工业大学高性能计算中心的HPRX2600上进行了数值实验,结果表明,该方法具有良好的加速比.     

"清真"知识体系与生活方式——以呼和浩特市回民区通道街为例

就回族与中华民族中其他民族的密切关系而言,对回族的研究不仅对理解我国的族群关系具有重要意义,还可能洞悉我国多元一体的民族格局与建立现代民族国家的互动过程."清真"作为回族穆斯林的生活方式,不仅仅是解释我国回族族群认同的途径,还是理解多民族杂居社会文化整合的关键.通过民族志的方法考察关于"清真"的知识体系和生活方式,不但可以理解回族社区的文化特质,更重要的是能够获悉回族社区所在地方社会的社会文化互动机制,从而理解一些地区基层社会族群关系的相对性.