论网络媒体核心竞争力的培育

网络媒体要在激烈的媒体竞争中求的发展,离不开竞争力的培育,而核心竞争力的培育是网络媒体能否在这崭新的信息时代发挥其应有作用的关键。本文正是结合当代网络媒体业的实践,阐述了网络媒体核心竞争能力的内涵、特征及其构成要素,并探讨了网络媒体在现有资源和能力中培育核心竞争力的具体方法。     

Unemployment dynamics in an OLG economy with public pensions

Pension benefits in old age establish a disincentive to save in youth, thereby yielding lower levels of capital stock and the wage rate. As a result, the trade union has an incentive to change the composition of its two targets: employment and the wage rate. This paper develops a model that includes employment effects of public pensions via capital accumulation and union wage setting. Within this framework, we consider how contribution rates to the pension system influence the level and time path of the unemployment rate. It is demonstrated that (1) a higher contribution rate results in a lower unemployment rate, and (2) the economy with a high (low) contribution rate experiences monotone convergence towards (oscillatory convergence towards or a period-2 cycle around) the steady state. The author would like to thank an anonymous referee, Kazutoshi Miyazawa, and seminar participants at Osaka University for their useful comments and suggestions, and Masako Ikefuji and Hiroaki Yamagami for their research assistance. Financial support from the Japan Society for the Promotion of Science (JSPS) through a Grant-in-Aid for Young Scientists (B) (No.17730131), the Asahi Glass Foundation, the Japan Economic Research Foundation and the 21st Century COE Program (Osaka University) is gratefully acknowledged. All remaining errors are mine.     

Environmental tax policy in a model of growth cycles

Summary. The purpose of this paper is to consider environmental taxation which would control emissions of firms in a model of growth cycles. In the model presented below, the economy may experience two phases of growth and environmental quality: “the no-innovation growth regime” and “the innovation-led growth regime”. Aggregate capital and environmental quality remain constant in the no-innovation growth regime, while they perpetually increase in the innovation-led growth regime. The paper shows that the tax plays a key role in determining whether the economy stably converges to one of the two regimes or fluctuates permanently between them. It also shows that there is a critical level of the tax and that the economy obtains higher growth rates of capital and environmental quality by raising (or reducing) the tax if the initial tax is below (or above) the critical level. Received: April 2, 2001; revised version: March 21, 2002 RID="*" ID="*" This research reported here was conducted within the research project “Project on Intergenerational Equity” at Institute of Economic Research, Hitotsubashi University. I am deeply grateful to an anonymous referee for his or her insightful comments, which greatly improved the paper. I also thank Hiroshi Honda, Yasuo Maeda, Yuji Nakayama, and participants in workshops at Hitotsubashi University, Kyoto University, Nagoya University, Osaka University, University of Tsukuba, Yokohama National University, and University of Tokyo for their valuable comments and suggestions. Any remaining errors are mine.     

Stone–Geary preferences in overlapping generations economies under pure exchange: A note

We incorporate Stone–Geary preferences into an overlapping generations economy under pure exchange, and explore stability, indeterminacy, and cycles with positive levels of saving and nonnegative public debt. A stable nontrivial steady state exists for parameter values, for which there does not exist equilibrium in the model with purely logarithmic utility function. We also show the possibility of a period-doubling bifurcation (a two-cycle).     

曝气生物滤池及其填料作用机理

介绍了曝气生物滤池及其填料的应用情况和研究进展,对曝气生物滤池反应动力学以及其填料作用机理等方面的研究进展进行了研究,概述了影响曝气生物滤池运行的主要因素,同时提出了今后曝气生物滤池的发展方向。     

持续发展中代际财富转移简单模型

代际均衡发展是持续发展论的主要内容之一，其中代际财富转移和贴现率应用是其核心内容。本文探讨了一个代际财富转移的简单模型，并采用人们熟悉的柯布──道格拉斯函数形式表达。模型的敏感因素为利息率、工资和自然资源价格，并且是由代际间的跨代收入分配决定的。贴现率等于同期利息率，其水平是变动的。     

多媒体高职英语教学的几点思考

多媒体技术辅助于高职英语教学有很多优越性，但在应用过程中存在教师对多媒体教学理解不深入、教学软件不足等问题。要使多媒体高职英语课堂教学达到最优化，必须提高教师对多媒体英语教学的科学认识，加强现代教育技术学习，提高制作教学课件的能力，加强传统教学与多媒体教学的整合。     

Utilizing Printed Media to Understand Desired Leadership Attributes in the People's Republic of China

Using news media as a reliable source, we content analyzed stories on business leaders in two major official Chinese newspapers in three different time periods over the past 20 years. Results show that the reform has brought an increase in stories of business leaders, and in coverage of the desirable leadership attributes relating to Confucian virtues, communist ideologies, and modern management philophies. The results suggest that, by publicizing and adorning specific leaders in both government and business sectors in the official media, the government reinforces the traditional values that are consistent with communist ideologies, and at the same time, it also introduces Western management values to suit the current needs of the society. The results of our study echo the findings of empirical studies on Chinese values that used data collected using other methods. We therefore encourage future research to use the printed media as a potentially valuable source of data for tracking changes in social phenomena in a society over time.     

政府职能转型与媒介效应述评——以电子政务为例

在由计划经济向市场经济转型过程中,我国政府职能正加速向“服务型”政府转变。适应媒介融合发展的趋势,电子政务在各级政府部门方兴未艾。媒介产业日益融合的今天,电子政务立足于互联网平台,涵盖了微信、微博、各类手机APP等多种媒体形式。完善的电子政务服务有利于提升公众对政府的信任和公共服务的满意度。当前电子政务媒介效应经验评价方法主要有层次分析法（AHP）、结构方程法（SEM）、因子分析和DEA方法,但这些方法在指标体系选择和测评方法的适应性方面还存在不足,努力构建普遍适应的、数据可获取性强的电子政务媒介评价方法体系是今后该领域研究的方向。     

Social media affordances: Enabling customer engagement

Despite the acknowledged importance of social media for customer engagement, our understanding of this phenomenon is limited and new theories can help shed further light on the unique features of social media in the tourism context. Our work contributes to the literature by adopting an affordance perspective that leads us to identify three distinctive social media affordances for customer engagement in tourism: persistent engagement, customized engagement, and triggered engagement. Our work also extends prior research on customer engagement by examining the process of recognition (proprioception, exteroception and coperception) through which organizations engage customers in social media.