沈阳经济区带动辽宁区域发展的建议

结合沈阳经济区的发展特点和优势,分析利弊,提出了充分利用沈阳经济区振兴东北老工业基地的扩散效应,促进沈阳经济区经济发展的建议,以期带动辽宁区域经济的发展。     

编辑活动的文化增殖意义

编辑活动是编辑主体的文化实践,是文化传播的重要途径。编辑活动的文化选择、传承、延伸和普遍传播生成了文化增殖。良性的文化增殖是人类社会文化形成、演进的形态之一。自觉的文化的超越性和编辑主体的文化理想构成编辑活动中文化增殖生成的内在机理。编辑活动的文化增殖意义,体现了文化运行的本质和规律。     

Bending but Not Breaking?: Foreign Investor Pressure and Dividend Payouts by Japanese Firms

This article examines the global diffusion of shareholder‐oriented governance practices, using the case of dividend payouts by Japanese firms. While Japanese firms previously retained profits for rainy days or new ventures, their dividend payouts began to increase in the 1990s, rapidly catching up with the levels prevailing in the United States. Following prior research, we focus on the role of foreign investors in this process but provide a more nuanced account of their influence, using panel data on 2,036 publicly traded Japanese firms from 1990 to 2005. First, we show that pressure from foreign investors increased dividends by Japanese firms not only directly but also indirectly, by extending the cognitive boundaries of organizational fields of Japanese firms beyond their local peers and toward their global competitors. Second, we show that although Japanese firms that remained deeply embedded in the traditional, stakeholder‐oriented governance system resisted shareholder‐oriented governance practices, even such firms yielded under pressure from both foreign and domestic investors. We conclude with theoretical implications of our findings for the literature on the global diffusion of shareholder value and its broader political and social consequences.     

汉语的国际地位与国际传播

汉语的国际地位正在提升,一个重要标志就是世界上越来越多的人开始或正在把汉语作为第二语言来学习。汉语在未来可能成为仅次于英语的强势语言,我们必须全面认识汉语在国际传播中的优势和不利因素。采取有利措施,积极推动汉语的国际传播。     

Asymptotic properties of MLE for partially observed fractional diffusion system with dependent noises

The paper studies long time asymptotic properties of the maximum likelihood estimator (MLE) for the signal drift parameter in a partially observed fractional diffusion system with dependent noise. Using the method of weak convergence of likelihoods due to Ibragimov and Khasminskii [1981. Statistics of Random Processes. Springer, New-York], consistency, asymptotic normality and convergence of the moments are established for MLE. The proof is based on Laplace transform computations which was introduced in Brouste and Kleptsyna [2008. Asymptotic properties of MLE for partially observed fractional diffusion system, preprint].     

Shoot growth dynamics and size-dependent shoot fate of a clonal plant,Festuca rubra, in a mountain grassland

The relation of the within-season and between-season patterns of shoot growth were compared in a clonal grass with long-lived shoots,Festuca rubra, in a mown mountain grassland. The growth rate of shoot length from spring to summer in a year was almost constant for each shoot irrespective of spring shoot length each year. The annual shoot growth rate from spring to spring was negatively correlated with the shoot length in the first spring. Shoots of different length and age therefore tended to converge over time to a population of identical shoot size, suggesting an equalizing effect of growth pattern on size structure. Shoot size (shoot length and number of leaves) influenced the fates of shoots. Larger shoots showed an increased incidence of both flowering and formation of intravaginal daughter shoots and a decreased incidence of death in the subsequent time period. The fates of shoots were independent of their age. Although the negatively size-dependent springto-spring annual shoot growth rate acted to decrease shoot size variation, the remaining variation within the shoot population was still sufficient to generate different fates of shoots. These fates were not related to the previous life history of individual shoots. There was a significantly positive effect of the shoot size at initiation on its life expectancy. This was mainly attributable to the positively size-dependent survival rate of shoots in the early stage (<1 year old) of shoot life history. Later on (> 1 year old), shoot size had little effect on the survival rate of shoots. Once small young shoots have survived this early stage (< 1 year old) in life history, they can grow vigorously, little affected by competition regardless of shoot size, and converge to a stable size structure of shoots of similar size. Only shoot size in the early stage ( < 1 year old) of life history is important for the persistence of a shoot population.     

我国企业技术创新扩散机制研究

技术创新扩散是指技术创新通过一定的渠道在潜在使用者之阃传播、采用的过程。主要介绍了企业技术创新扩散的涵义、企业技术创新扩散的机制、企业技术创新扩散发生的条件，最后指出，在一种有效的技术创新扩散途径中，中介机构处于关键地位。     

服务的空间扩散: 基于上海迪士尼的实证

体验经济是当代企业服务营销的重要组成,由于服务体验的扩散具有明显的空间效应,本研究通过建立服务扩散的空间溢出模型,在其中定义区域间的相对影响力和易感性,从而准确分离了本地区服务体验扩散和其他地区溢出扩散这两种空间影响效果.研究基于上海迪士尼乐园游客的移动数据,实证测量了迪士尼服务群体的空间扩散效应、省份和区域层次服务扩散的影响力、易感性与溢出效应.结果发现,迪士尼乐园服务群体的扩散效果主要受到本地游客的直接影响(占比38.6%)和来自其他地区游客的溢出影响(占比52.4%),受到的时间效应和媒体效应为8.7%和0.3%.此外,该模型还给出了各省游客对迪士尼服务效果传播的不同影响力,以及各省游客对该服务传播的易感性.本研究证实了服务扩散过程中地区空间影响的不对称性,开发的定量模型也为服务业营销人员进行以空间地理为导向的干预措施提供了精准参考.     

全球金融危机下的股票市场波动跳跃研究——基于高频数据的中美比较分析

本文以雷曼破产日至2009年1月底这段时期内上证综指、恒生指数以及S&P500指数的日内高频数据作为研究对象,采用跳跃显著性检验方法和扩展HAR模型,对波动跳跃特征进行了实证研究.结果表明:雷曼危机导致股市波动的显著提高,但中国内地股市受到的影响最小;中国香港股市成为波动跳跃发生频率最高、跳跃幅度最大的市场,且波动跳跃主要发生在夜间休市时间内;雷曼危机使得波动率模型的预测精度大大降低,股市风险变得更加难以预测,对于新兴市场来说这一现象更加明显.     

基于SIR模型的微博信息扩散规律仿真分析

微博作为一个爆炸式传播信息的社会化媒体受到了越来越多人的关注,掌握微博信息的扩散规律可以对不良信息传播进行有效监管。本文采用易感者、传染者及免疫者(SIR)模型将微博用户分成未转发用户、已转发用户和已淹没用户三类,成功模拟了微博用户的转发行为。通过Matlab仿真得到微博信息扩散过程的曲线,发现了微博中信息扩散的主要规律。基于仿真结果的分析,对微博管理提出了政策建议。