现代农村物流金融产品的经济学分析与科学选择

现代农村物流金融产品是以一种标准化的程序或服务的形式存在。成本收益分析是利用成本与收益之间的相互约束关系,直接评价现代物流金融衍生产品及其经济效益的一种方法。经济学分析表明:我国东部发达地区宜选用高级别的现代农村物流金融产品,中部与东北老工业区宜选用较高级别的现代农村物流金融产品,西部欠发达地区宜选择低级别的现代农村物流金融产品;随着现代农村物流业的发展及其规模的扩大,相应地调整和创新现代农村物流金融产品,以满足不断发展的现代农村物流业需要。同时,现代农村物流金融产品的经济学分析,无疑为科学地选择现代农村物流金融产品提供重要的决策参考。     

国有产权转让中的机制设计--基于企业职工的合约选择

在国有产权转让过程中,关键是要克服国有产权本身所具有的不利于进行市场交易的特性,使其交易更符合市场原则。市场本身就是由一个个的合约所构成,是否选择签约及合约的方式是由每个参与者自己作出的。因此,国有产权转让的机制设计就是要尽量使相关的利益主体有权作出对自己有利的合约选择,并对自己的行为负责。     

Consumers’ valuation for food traceability in China: Does trust matter?

Food safety is a very important topic in China. We investigate Chinese consumers’ preferences and willingness to pay (WTP) for food traceability using a choice experiment. Given that consumers’ trust in the food system may affect their preferences and WTP, we also assess the interaction between consumers’ trust in government’s supervision of food safety and food labels and consumers’ preferences for traceable food products. Using data collected from a choice experiment on Fuji apples in a face-to-face survey in six Chinese cities, the results show that (i) consumers are willing to pay for traceable food but their valuations can differ upon the degree of their trust in government’s supervision of food safety and food labels; (ii) consumers are willing to pay for traceability with strong evidence of preference heterogeneity; (iii) government is not the most trusted safety inspection and certificate authority as found in prior studies using animal food products in China.     

连锁品牌空间定位模型及经济分析

本文通过建立引入连锁品牌空间定位系数、价格、选择成本的需求函数,并以此模型解释了连锁品牌空间定位的决策是通过空间定位系数和品牌信用度共同作用而实现的。同时对连锁品牌空间定位问题分为同一连锁品牌不同商圈、同一连锁品牌同一商圈、不同连锁品牌同一商圈这三种情况进行了解释分析,并对一些现实进行了论证。在理论分析的基础上,本文提出了连锁品牌空间定位的空间定位系数—品牌信用度二维模型,并分别从选择高空间定位系数商圈和提高品牌信用度建设方面为现实中的连锁品牌提供了相应的策略。     

大规格角钢靴板节点特征分析与减孔数计算方法

采用单肢布置2排以上高强螺栓的L320、L360高强角钢是特高压工程的发展趋势。现行计算方法没有明确其破裂面的形式,由于螺栓准线数多,计算时需对每个螺栓节点计算多次,不便于工程应用。通过多排孔板件试验、大角钢有限元计算建立训练集,构造随机森林回归模型对大角钢构件减孔数进行特征分析,结果表明,当单肢螺栓准线数增加后现行计算方法中相邻准距的权重过高、壁厚的偏低,在模型几何尺寸变化时计算结果容易产生较大波动;通过调参后的随机森林模型、特征选择后简化了螺栓减孔数计算方法,其计算结果稳定,与有限元模型更相符,泛化能力较好,也可用于两排螺栓减孔数计算。     

Effects of individual resources and team-member exchange on service quality

While workplace resources are generally viewed as positively affecting performance, some studies indicate that not all resources increase performance. This study addresses the controversial disparate effects of workplace resources on performance by exploring functionally classified workplace resources in self-managing service teams and their relative impacts on team service quality. Considering membership dynamics and consequences between members, a field experiment was conducted in a cafeteria, with data collected through a working diary for workplace resources and a customer survey to evaluate service quality. Results suggest that efficacy-resources in self-managing teams should be controlled with caution as they may adversely affect team service quality. Supporting the person–situation interactionism perspective, workplace resources interact dynamically with individual employees and with situations. Esteem-resources were found to increase team service quality, while team-member exchange not only improved team service quality but also moderated the impact of esteem-resources on team service quality.     

会计专业实践实训教学中的问题及对策

会计实践实训教学是会计教学的重要组成部分。但目前所采用的仍主要是分课程实验、综合模拟实验和专业实习模式。但现代企业对会计人员提出了更高的要求,要求学生不仅能胜任一般的工作岗位,而且要具有思考能力、创新能力,能分析和利用已生成的会计信息积极参与企业的管理活动。实践实训教学应与专业理论教学相结合,改变单一的教学方式,强化案例教学,并积极推广多媒体教学。     

The demand for organic foods in the South of Italy: A discrete choice model

This paper analyses organic food consumer’s demand that can help advising on implementing organic food policies at European level or, for a particular European country. In particular, it investigates the main factors explaining organic food demand in the South of Italy. Following the Lancaster consumer’s demand theory we assume that consumer’s utility depends on product characteristics instead of the product itself. Thus, consumers will choose the product (organic versus conventional) that possesses the combination of attributes that maximises its utility. Consumer’s choice for organic foods is analysed within the random utility discrete choice model and a bivariate probit model has been specified. The data were collected through a questionnaire conducted in the Italian region of Campania (Naples) in 2003. Findings indicate that economic factors are still factors limiting the growth of organic demand in Europe. Moreover, the consumers’ perceived benefits of organic food (environmental and health) are factors promoting organic food demand. In addition, greater information on organic food products is crucial to expand its demand in the South of Italy because this information will increase the consumer’s organic knowledge. Then, higher organic knowledge will increase the probability to buy organic foods and, to a larger extent, the level of consumption among existing consumers.     

密封胶在拉索索端结构中的应用研究

索端结构是拉索的防护薄弱环节,在索端结构中增加密封胶措施是索端密封的一次探索。选取了几种不同的密封胶分别与拉索聚乙烯护套进行粘结,对提高斜拉索的耐久性和安全性有一定的意义。