A Statistical Analysis Between Consumer Behavior and a Social Network Service: A Case Study of Used-Car Demand Following the Great East Japan Earthquake and Tsunami of 2011

When a large-scale disaster hits a community, especially a water-related disaster, there is a scarcity of automobiles and a sudden increase in the demand for used cars in the damaged areas. This paper conducts a case study of a recent massive natural disaster, the Great East Japan Earthquake and Tsunami of 2011 to understand those car scarcities and demand in the aftermath of the catastrophe. We analyze the reasons for the increase in demand for used cars and how social media can predict people’s demand for used automobiles. In other words, this paper explores whether social media data can be used as a sensor of socio-economic recovery status in damaged areas during large-scale water-related disaster-recovery phases. For this purpose, we use social media communication as a proxy for estimating indicators of people’s activities in the real world. This study conducts both qualitative analysis and quantitative analysis. For the qualitative research, we carry out semi-structured interviews with used-car dealers in the tsunami-stricken area and unveil why people in the area demanded used cars. For the quantitative analysis, we collected Facebook page communication data and used-car market data before and after the Great East Japan Earthquake and Tsunami of 2011. By combining and analyzing these two types of data, we find that social media communication correlates with people’s activities in the real world. Furthermore, this study suggests that different types of communication on social media have different types of correlations with people’s activities. More precisely, we find that social media communication related to people’s activities for rebuilding and for emotional support is positively correlated with the demand for used cars after the Great East Japan Earthquake and Tsunami. On the other hand, communication about anxiety and information seeking correlates negatively with the demand for used cars.     

马云：“狂人”的精神危机

马云最近的日子可不轻松。支付宝＂牌照＂事件爆发以来,他被指责为＂违背了支撑市场经济的契约原则＂,具有＂负示范作用＂。更有企业人士指出,马云对于＂协议控制＂采取的举措,开了一个坏头,易造成海外资本对中国互联网创业者的不信任感,对产业发展形成不良影响。     

A Conjoint Analysis of a Next Generation Network (NGN) in Japan

A conjoint analysis on a Web survey in 2010 with 160 participants and 8 questions shows that a Marginal Willingness To Pay (MWTP) on a Next Generation Network (NGN) of Flet’s Hikari Next is lower than its actual price as provided by NTT East. Conjoint analysis is one application of conditional logit. MWTP is WTP when one unit of property is increased, and MWTP is used to verify how much each person evaluates each property. Higher transmission speed, digital TV availability, and higher Internet security affect the MWTP positively, and the amount of the monthly payment of NGN affects the MWTP negatively. Therefore, it is assumed that the NGN of Flet’s Hikari Next by NTT East will be accepted by potential customers and diffused as a major communications service of NTT East and NTT West. NGN providers may be able to maximize their benefits by adjusting the NGN of Flet’s Hikari Next property to meet customer demands, especially in digital TV availability, higher transmission speed, and communications security.     

社会双重性结构使企业家难适应

现在的中国民营企业家,面临的是整个国家的发展、社会的发展在各个系统之间不同步,而造成的紧张和摩擦,这种紧张和摩擦在企业家身上是表现得特别突出。     

Research Note: A Cooperative Discussion Support System through Visualization of Participants' Contributions to a Discussion

This paper proposes a new discussion support system. The proposed system supports participants in cooperative discussions, evaluates the contributions of participants to a discussion, and visualizes the contribution points in a ranking list. We have developed the proposed system and evaluated it in an evaluation experiment. Experimental results show that the proposed system supports cooperative discussions.     

3W咖啡馆：这里是互联网人的社交圈子

3W咖啡馆位于中关村西区。咖啡馆成立那天,2011年8月6日,也是互联网诞生20周年。虽然只有小小的门面,但每到下午,咖啡馆里就熙熙攘攘,顾客多是来找投资资金的创业者和寻找“猎物”的投资人。     

安泰科技：新征程 再出发

安泰科技致力于成为世界知名的先进金属材料供应商,在非晶、纳米晶等众多先进能源材料领域为客户提供材料解决方案。在非晶态材料领域,安泰科技已成为全球第二大制造商。     

智能能源网：大幕将启

近来,有关“智能电网”、“阶梯化电价”等话题引起人们热议,其蕴含的巨大商机也是令人期待的。然而,规划中的智能电网只是未来智能能源网的一部分。与智能电网不同,中国正在筹备建设的智能能源网,是将现有的电力、水务、热力、燃气等单向运转而且浪费巨大的能源网络改造为高效互动的创新网络。     

BLOCKS: Efficient and Stable Online Visualization of Dynamic Network Evolution

It is computationally and cognitively expensive to observe the evolution of community structure on dynamic networks in real-time, not only because the data sets tend to be complex, but also because the visual interfaces are often complicated. We introduce BLOCKS, a simple but efficient framework to abstract and visualize the evolution of community structure on dynamic networks. Instead of indicating detailed changes of nodes and links temporally, BLOCKS regards communities as visual entities and focuses on representing their behaviors and relation changes on a time series. Experiments detected a stable performance of BLOCKS compared with previous methods while detecting the community structure of networks. We also present a case study that shows an effective learning process of network evolution with BLOCKS.     

以微软华人协会转型看微软笑傲云端

微软华人协会近期的诸多表现刷新了人们对微软以往的感受。微软不再只是一支善于在既有市场上与明确对手肉搏的铁骑雄兵,而是有可能成为一个善于预见未来巨大需求,直奔应属之地,在云计算与新一代网络方面继续引领世界IT产业发展的龙头企业。     

中关村东升科技园：乡镇企业突围的样本

东升乡农民是拿着土地,带着资产,主动把自己融入了中关村。中关村东升科技园.北领地是中关村国家自主创新示范区的＂红色心脏＂。它遵循历久弥新、人文精神的欧洲高等学府Academy风格建筑,以赭红色的环保陶土砖立面打造的低密度花园式独栋建筑,让人不禁想到与之同名的以自然景观和文化特色著称的澳大利亚中北部——北领地。     

The Role of Cross-Border Networks of Skilled Labor in Offshore Outsourcing: Empirical Evidence Based on the Network Theory

This study investigates the determinant role of the cross-border movement of skilled labor in the expansion of service trade between the US, and both developed and developing countries. For this purpose, we employ the key concepts of network theory as an analytical framework and conduct panel data analysis and graphical modeling analysis for 31 countries from 1999 to 2008. In this decade, offshore outsourcing in the service trade took off worldwide. We use data for each country’s service exports to the US, number of H-1B visas issued, GNI per-capita, network readiness index, and an English dummy for the official language. We illustrate the trajectory and interactions between these factors. These analyses yield three observations. First, service trade with the US is more intensive among higher income countries. Second, the number of H-1B visas issued has a positive effect on service exports to the US. Third, individuals in lower income countries tend to desire H-1B visas and create intensive skilled labor networks with the US, the path through which developing countries such as India expanded their service exports to the US.     

北京农业生态谷：大国企开创新农业模式

或许,在将来,这个生态卫星城,能解决的不仅仅是食品安全的问题,还可能会激起都市人的返璞归真、回归田园的一种向往。     

如何创建高水平民办大学

我国民办高等教育事业的创始是在1905年,建国后被取消,改革开放以后恢复发展,并取得显著成绩。     

高能时代：地球环境卫士

生态环境修复和五大环境屏障系统是高能时代手中无坚不摧的利刃,以此为基础,高能时代在各领域都做了全新的突破和变革,取得了众多令人瞩目的成绩。     

A New Type of Computer Premium and Its Correlation to Individual Wages

This paper examines statistical correlations between workers?? income levels or wages, and Information and Communication Technology (ICT). The analyzed data set is micro data collected through the Web in 2008 and 2010 by the Research Institute for Socionetwork Strategies. This micro data estimates the rank correlation of income classes with respect to three types of ICT labor service. Next, multiple linear regression functions are estimated for the wage levels with respect to age, sex, years of continuous employment, and three types of ICT labor service over all industries and in the manufacturing industry or service industry. Finally, a multiple regression analysis is conducted for individual utility levels with respect to income, leisure, and three types of ICT labor service. The results show that, first, the coefficients of rank correlation for all pooled data are positive and statistically significant. Second, individual ICT labor services have positive effects on workers?? wage levels, and the partial regression coefficients are statistically significant. Third, the partial regression coefficient of personal computer operation time decreased but the partial regression coefficient of mobile computer operation time related to work increased drastically from 2008 to 2010. Fourth, the use of the personal and mobile computer shifts the utility function upward with respect to income and leisure.     

张鹏:中国产业园区需要转型到总部经济时代

我觉得中国99%的产业园区是不及格的,虽然现在看来是盈利的,但命运是很短暂的。这就是造成我们产业空心化、经济发展模式转型过程中的障碍。