When hubs forget,lie, and play favorites: Interpersonal network structure,information distortion,and organizational learning

The interpersonal network structure of an organization directly influences the diffusion and recombination of ideas and can thus facilitate or impede organizational learning. Most interpersonal networks have ‘hubs’—individuals who have significantly more connections than does the average member. This raises important questions about how hubs influence organizational learning outcomes. Does the presence of hubs improve or impair performance? What happens if hubs forget or misrepresent information that is transmitted through the network? Using simulation models, we find that moderately hubby networks outperform both very hubby and democratic networks. We also find that moderate amounts of information omission or misrepresentation can be surprisingly beneficial to performance, though the patterns of their effects are strikingly different. Copyright © 2013 John Wiley & Sons, Ltd.     

Socially optimal replacement of conventional with electric vehicles for the US household fleet

In this study, a framework is proposed for minimizing the societal cost of replacing gas-powered household passenger cars with battery electric ones (BEVs). The societal cost consists of operational costs of heterogeneous driving patterns' cars, government investments for charging deployment, and monetized environmental externalities. The optimization framework determines the timeframe needed for conventional vehicles to be replaced with BEVs. It also determines the BEVs driving range during the planning timeframe, as well as the density of public chargers deployed on a linear transportation network over time. We leverage data sets that represent US household driving patterns, as well as the automobile and the energy markets, to apply the model. Results indicate that it takes 8 years for 80% of our conventional vehicle sample to be replaced with electric vehicles, under the base case scenario. The socially optimal all-electric driving range is 204 miles, with chargers placed every 172 miles on a linear corridor. All public chargers should be deployed at the beginning of the planning horizon to achieve greater savings over the years. Sensitivity analysis reveals that the timeframe for the socially optimal conversion of 80% of the sample varies from 6 to 12 years. The optimal decision variables are sensitive to battery pack and vehicle body cost, gasoline cost, the discount rate, and conventional vehicles' fuel economy. Faster conventional vehicle replacement is achieved when the gasoline cost increases, electricity cost decreases, and battery packs become cheaper over the years.     

方向限制的信息搜索引擎在智能交通系统中的应用研究

基于位置的信息服务(LBS)要求在任何时间,任何地点,向有需要的人群提供正确的位置信息,因而在智能交通系统(ITS)中有着广泛的应用.传统的信息搜索方式是先对海量数据进行关键字检索,再对兴趣点进行逐个排除并得到最终结果,这种方式运算量大,检索结果复杂.方向限制的信息搜索通过对兴趣点建立新型索引,利用快速有效的剪枝技术结合关键字索引方法预先剪除大量不符合方向要求的数据,显著提升了搜索效率,为用户的出行提供更加便利的体验效果.     

博客营销在企业网络营销中的作用管窥

互联网的迅猛发展给博客(BLOG)提供了一个迅速成长的成熟环境。而企业在网络营销业务中的博客营销则是一种基于包括思想、体验等表现形式的个人知识资源及它的网络信息传递形式。这种网络营销工具已在企业网络营销业务中起到越来越大的作用。     

浅析电厂锅炉主要辅机保护条件的优化相关问题

目前采用大容量、高参数机组,并实现机组的优化运行成为解决电力工业发展中重要技术。文章在概述大型锅炉运行的安全性相关问题基础上,对锅炉电动给水泵、汽东给水泵、引风机、送风机、一次风机、给煤机的保护条件进行了完善和优化。     

Query Titles in Travel Forums: Nature and Impacts on Responses

Despite travel forums being an influential source of electronic word of mouth in the tourism context, the nature of interaction between information inquirers and contributors is yet to be appraised. This study attempts to fill the knowledge gap by exploring the inquiry titles in a travel forum in terms of its nature and influence on viewers’ responses. For empirical examination, thread titles for queries on South Korea and Japan that were posted in the Lonely Planet Thorn tree forum between March 2009 and February 2010 were collected (n?=?220) and analyzed. The results reveal that search by location is prevalent when potential tourists post a query in a travel forum. Search by interest is more likely at the city or regional level, while search by general (SBG) topic is prevalent in national-level search. The nature of inquiry title also reflects the intended length of stay at a destination. SBG in title significantly outweighs other categories in terms of the number of views and replies. Implication of findings and directions for future study are discussed.     

Internet Job Search and Labor Market Outcome

This study examines the effect of the use of internet job search (IJS) on individual wages. The data utilized in the study are obtained from the Internet and Computer Use Dictionary in the Current Population Survey of September 2001 and October 2003. An Oaxaca Decomposition is used to examine the extent to which wage differences are influenced by IJS. The results show that accessibility to the internet is a crucial factor in the decision of an individual to utilize the internet for job search activities. However, no clear evidence exists that IJS increases individual wages. Additionally, the study also demonstrates that IJS is subject to self-selection bias. Thus, failure to control for self-selection bias results in a very serious bias in estimation.     

Consumers' Online Information Search for a New Restaurant for Dining-Out

ABSTRACT

By Nelson (1970)'s categorization, purchasing a service such as dining-out at a new restaurant is ‘experience-oriented’ in its nature, and its quality cannot be easily searched before the actual consumption. However, it has been suggested that the interactive nature of the Internet will improve market efficiency by creating a new channel of communication that allows the provision of information about experience attributes in a readily available format (e.g., other consumers' rating online). The paper empirically investigates this notion by exploring consumers' online information search behavior for a new restaurant for fine dining. The extent of usage of various online information sources and the perceived importance of each source are investigated in the United States and in Taiwan. Results show that information from other consumers is considered more important than information from sellers, but that US consumers favor non-Internet sources of information while Taiwanese consumers favor online sources.     

利用PLC仿真软件组织PLC课程实践环节的教学

高职院校的机床电气控制与PLC课程设计,需要大量的实验设备。由于经费紧张,大多数高职院校的实验设备很难满足需要。因此,采用PLC仿真软件与计算机相结合的方法,解决课程设计中程序调试的难题,能收到较好的效果。