粉煤灰对氯氧镁水泥的作用和影响

通过对比试验研究了不同掺灰量对氯氧镁水泥强度、耐水性、体积稳定性的影响,得出粉煤灰最佳掺量。试验结果表明,粉煤灰是一种理想的添加剂,可使氯氧镁水泥制品的耐水性得到明显改善,提高体积稳定性而且对氯氧镁水泥制品的强度影响很小,并有利于后期强度的增长。     

如何构建和完善独立学院贫困生帮扶体系——以桂林电子科技大学信息科技学院机电工程系为例

随着我国高等教育的逐步普及,高校贫困生群体的数量已明显增长,他们的生活和学习状况已经越来越成为我们关注的问题。机电工程系作为桂林电子科技大学信息科技学院的一个大系,贫困生数目比例也较大,本文在对本系贫困生进行抽样调查的基础上,首先分析了我院形成贫困生的原因,对目前我院机电工程系贫困生现状进行了简要阐述,接着在此基础上,对我院目前贫困生帮扶制度存在的问题做了深度剖析,列举了"八大不足",最后,提出了构建完善信息科技学院机电工程系贫困帮扶体系的观点。     

基于创新诊断的企业科技创新发展对策研究

企业创新诊断是提升企业科技创新能力、加快企业转型升级的重要助力。以企业创新诊断为切入点,从技术创新、组织创新和制度创新三方面构建了企业科技创新能力指标体系,并用加权平均法和SWOT分析法对江苏省中小企业创新能力及创新发展战略进行了案例分析,提出了促进企业科技创新发展的对策建议。     

Why is Price Dispersion Higher Online than Offline? The Impact of Retailer Type and Shopping Risk on Price Dispersion

When physically similar products, of similar quality, are offered by retailers both online and offline, we often observe that the dispersion in prices of these products online is greater than the price dispersion offline. This observation runs counter to early theories that suggested price dispersion online would be smaller than that offline due to the ease of search and information availability online. This paper investigates and provides an explanation for this puzzling phenomenon by examining the impact of two important drivers of price dispersion: retailer type and consumers’ shopping risk. Retailer type refers to whether a retailer is a pure offline, pure online, or dual channel retailer. Shopping risk is defined as the product of consumers’ perceived risk of shopping and the transaction uncertainty related to shopping at different types of retailers.A game-theoretic approach is adopted to model consumers’ price search and product purchase, as well as price competition within and across retailer types in online and offline markets. Equilibrium pricing strategies are derived for different retailer types competing for different consumer segments with different levels of perceived shopping risk. The impact of retailer type and shopping risk on online versus offline price dispersion are quantified, and conditions when price dispersion is greater online than offline are identified.Results indicate that price dispersion is greater online when the number of pure online retailers is sufficiently large and is increasing in the number of pure online retailers. In addition, a reduction in online shopping risk may actually increase online price dispersion. Results further suggest that even without any online sales, dual channel retailers should maintain their online presence for the purpose of information dissemination, which justifies the importance for pure offline retailer to incorporate webrooming strategies, where consumers can search for prices online but purchase offline.     

中国-东盟进出口贸易与中国经济增长的实证分析

近几年,中国对东盟的进出口货物贸易迅速增长,中国主要向东盟出口劳动密集型产品,进口资源密集型产品,双方在技术资本密集型产品上存在产业内贸易。双方的贸易结构必然影响到双方贸易对中国经济增长的拉动。通过对中国-东盟货物贸易的出口总额、进口总额与中国经济增长之间的关系进行经验分析,得出结论,即中国对东盟的进口和出口均能促进中国经济的增长,且进口比出口更能促进中国经济增长。     

黑龙江省外贸依存度测评浅析（1990—2007）

外贸依存度是对外贸易总额与国内生产总值的比值,它不仅用来衡量一个国家或地区的经济对国际市场的依赖程度,也同时反映一个国家或地区的经济开放程度。与全国水平相比,黑龙江省外贸依存度还比较低,始终与全国保持20个百分点以上的差距。随着改革开放和招商引资的力度加大,全国外贸依存度呈现较快提高,相比之下,黑龙江增长比较缓慢。应采取加强政府间联系,进一步发展对俄贸易;调整产业结构,优化出口商品结构;拓展新市场,分散国别风险;加大经贸往来,增加经济外向度等措施,进一步促进黑龙江经济发展。     

顾客价值创新的基本途径及动态管理

顾客价值创新是近年来顾客价值研究的热点之一。从顾客价值及顾客价值创新的概念入手,分析了顾客价值创新的原理,提出了进行顾客价值创新的战略途径,并指出顾客价值创新是一个动态过程,企业需要动态管理。     

科技型小企业的成长理论综述

科技型小企业来自于小企业,又不同于一般传统的小企业.科技发展和知识创新在人类经济生活、社会进步中的作用越来越重要,技术创新对科技型小企业的推动作用也成为了国内外学术界关注的焦点,技术创新与科技型小企业发展成为重要的议题.由于信息技术的发展,科技型企业更容易地更及时地获取有关信息,企业内部的交易成本减少了,企业边际具有不断扩大的趋势.集群效应也大大增强了小企业的技术创新能力,提高了小企业的市场竞争地位.     

Positive and Negative Word of Mouth about Restaurants: Exploring the Asymmetric Impact of the Performance of Attributes

This study examines the relationship between attribute performance of a restaurant and customers' positive and negative word of mouth (WOM). We present an analysis of 168,262 customer reviews, which consist of an overall rating of a dining experience, ratings of food, physical environment and employee service, and real expenditure for a meal, totally covering 1,542 Chinese restaurants on a restaurant guide website. The results indicate that the performance of attributes has an asymmetric impact on positive and negative WOM for the restaurant industry as well as for low-end and mid-to-high-end restaurants. Our results also show that, in most cases, there is a combined effect of two attributes on both positive and negative WOM.     

The exchange rate pass-through into import prices: the case of Japanese meat imports

Japan is a traditional net importer of food products in general and meat products in particular. Japanese meat imports come from a few countries thus making Japan potentially very sensitive to the swings in one or a few bilateral exchange rates. One of the key contributions of this article is the use of commodity (meats in this case) imports weighted exchange rates in the analysis. The standard practice in previous international agricultural trade studies related to either exchange rate pass-through or pricing to market was to use the aggregate trade weighted exchange rates usually provided by the Central Bank authorities or sources. Beef and poultry import prices indicate partial exchange rate pass-through while import prices of pork indicate zero exchange rate pass-through, primarily due to gate price policy system applied to pork imports. In terms of competitiveness, these results suggest relatively more competitive markets among poultry importing firms, somewhat competitive markets among beef importing firms, while competitiveness of pork importing firms could not be assessed due to existing import policies.