浅谈 GB 2828 的正确应用要素

主要阐明应用国家标准ＧＢ２８２８在保证验后被接收批具有期望的质量上的实用价值,指出正确应用ＧＢ２８２８的几个重要因素及与ＧＢ６３７８组合应用的好处。     

经济欠发达地区民间借贷问题研究——基于桂林的样本数据

随着社会主义市场经济的发展,民间借贷现象逐渐被重视,而经济欠发达地区的民间借贷行为由于其鲜明的特点和运行机理尤其引人关注。本文以桂林辖区民间借贷为样本,在分析民间借贷现状、特征的基础上,试图探讨经济欠发达地区民间借贷的经济政策效应及监测体系,以达到为货币政策制定和执行提供参考的目的。     

Supplier traits for better customer firm innovation performance

Previous research on embedded ties with suppliers in an innovation context has ignored the need for customer firms to assess and select suppliers on the basis of market orientation strategies and relationship marketing attributes. To address this void, this study investigates the effects of suppliers' downstream customer orientation and supplier-customer homophily (i.e., similarity of the supplier and the customer) on the customers' innovation performance. Data pertaining to new product development projects with contributions from supplier firms was collected on both sides of the supplier-customer dyad. The analysis shows that downstream customer orientation and supplier-customer homophily have a significant impact on the customer firms' new product efficiency (i.e., project cost and project speed) and new product effectiveness (i.e., innovativeness), which in turn positively influence new product performance in terms of profitability, market share, and growth.     

中国国内地方保护问题的调查与分析

本文通过对地方保护主义调查问卷的分析 ,回答了当前国内地方保护的状况、政府致力于减弱地方保护的政策和努力是否有效、现阶段地方保护的方法和手段所呈现的特征以及今后政策的着力点等问题。同时 ,在重点行业管理、劳动力流动、司法公正、财税制度等方面提出了削减地区间贸易和要素流动壁垒、抑制地方保护行为的政策建议。     

食品抽样的注意事项

食品抽样是食品安全抽样检验的首要关键,本文从食品抽样的四个环节上,依据《食品安全抽样检验管理办法》,分析食品抽样过程中应注意事项,旨在提高食品安全抽样检验的质量。     

新型固相萃取材料在样品前处理技术中的应用研究进展

固相萃取是近年来发展比较迅速的样品前处理技术,固相萃取材料的选择是影响固相萃取效率的主要因素之一。本研究对近年来新型的固相萃取材料及其在样品前处理技术中的应用进行综述,并对其未来发展的方向进行了展望。     

Measuring a boom and bust: The Sydney housing market 2001–2006

The Sydney housing market peaked in 2003. The period 2001–2006 is, therefore, of particular interest since it captures a boom and bust in the housing market. We compute hedonic, repeat-sales and median price indexes for five regions in Sydney over this period. While the three approaches are in broad agreement regarding the timing of the turning point in the housing market, some important differences also emerge. In particular, we find evidence of sample selection bias in our hedonic and repeat-sales data sets (with the former focusing more on better quality dwellings and the latter more on lower quality dwellings). These sample selection biases could in turn cause bias (in opposite directions) in our hedonic and repeat-sales indexes. Median indexes may likewise be biased as a result of an apparent decline in the average quality of dwellings sold in the latter part of the sample. We also find evidence of convergence in prices across regions during the boom and divergence in the subsequent bust.     

The challenge of program evaluation: When increasing program participation decreases the relative well-being of participants

Two goals of food assistance programs are to improve well-being and to increase participation among those in need. Progress in meeting the first goal can be measured by the difference in well-being between participants and eligible non-participants. This gap in well-being though can be affected by progress made toward the second goal of increasing participation rates. In particular, if those with the lowest levels of well-being disproportionately enter the program, the gap can increase. To examine whether this tension between goals exists empirically, we consider the case of the Food Stamp Program and its effect on food insecurity in the United States, using data from the Survey of Income and Program Participation (SIPP). In particular, we use variation in State policies (the change in administrative error rates and the combined value of Temporary Assistance for Needy Families (TANF) and food stamp benefits) to analyze whether increasing participation rates leads to increases in the difference in food insecurity rates. Controlling for other factors, we find evidence of the tension between these two program goals insofar as States with policies which encourage participation have higher differences in the food insecurity rates of participants and non-participants.     

Structural measurement errors in nonseparable models

This paper considers measurement error from a new perspective. In surveys, response errors are often caused by the fact that respondents recall past events and quantities imperfectly. We explore the consequences of limited recall for the identification of marginal effects. Our identification approach is entirely nonparametric, using Matzkin-type nonseparable models that nest a large class of potential structural models. We show that measurement error due to limited recall will generally exhibit nonstandard behavior, in particular be nonclassical and differential, even for left-hand side variables in linear models. We establish that information reduction by individuals is the critical issue for the severity of recall measurement error. In order to detect information reduction, we propose a nonparametric test statistic. Finally, we propose bounds to address identification problems resulting from recall errors. We illustrate our theoretical findings using real-world data on food consumption.     

贴近市场办学,提高就业质量——广西高职高专毕业生就业情况分析

对广西63家用人单位进行高职高专毕业生就业情况跟踪调查的结果表明:用人单位在对高职高专毕业生的职场表现给予肯定的同时,也指出高职高专毕业生存在的种种不足。在对调查资料进行分析的基础上,文章针对高职高专毕业生就业状况反映出来的问题提出改进意见,其目的是提高高职高专毕业生的就业质量。