驱动与阻碍:网络位置影响知识转移的系统动力学研究

基于网络位置的“双刃剑”特性，从驱动机制和阻碍机制着手构建网络位置影响知识转移的系统动力学模型，并进行仿真和灵敏度分析。结果显示：知识转移受到网络位置驱动与阻碍的双重影响;当企业占据较高的网络中心度与较少的网络结构洞时，协同效应最显著，知识转移量最大。该研究揭示了网络位置对知识转移的影响机制，也可为企业选择合适的网络占位提供借鉴与依据。     

The interdependence of global oil price,China's stock price and economic policy uncertainty

This investigation examines the interaction among global oil price (OP), China's stock price (SP) and China's economic policy uncertainty (EPU) during the period of 2005:01 and 2017:12. A rolling window Toda‐Yamamoto causality method shows a complex time‐varying relationship. Bilateral causalities between these variables mostly accompany by sharp fluctuations in global or China's economy. Taking into account the inherent consistency of this time‐varying relation, the causal steps approach shows EPU follows a partial but time‐varying mediator process during crisis periods, which suggests EPU is one of mediator variables in this transmission mechanism. The mediator role of EPU in the transmission mechanism of OP and SP has not been paid enough attention before. Our findings provide a new direction for investors from the perspective of policy changes to deal with risks caused by OP and SP fluctuations especially when the financial market experiencing huge fluctuations.     

Asymptotic ruin probabilities for a discrete-time risk model with dependent insurance and financial risks

This contribution focuses on a discrete-time risk model in which both insurance risk and financial risk are taken into account and they are equipped with a wide type of dependence structure. We derive precise asymptotic formulas for the ruin probabilities when the insurance risk has a dominatedly varying tail. In the special case of regular variation, the corresponding formula is proved to be uniform for the time horizon.     

教育类课程设置及其教学管理存在的问题与对策

针对当前教育类课程开设存在的课程设置不合理、教学重视程度不够、教学管理亟须加强等问题,提出了加强教师教育培养模式改革、重视教师专业化发展、对教育类课程设置与实践进行创新的对策,进而就其教学管理提出了建设性的意见。     

整体浮运转体法架设钢桁梁施工技术

本文简要介绍整体浮运转体法架设钢桁梁的施工技术及施工过程控制。     

关于建立西安科技银行的调研报告

科学技术作为第一生产力,是当代经济发展的决定因素.西安科技资源丰富,拥有众多的科研院所与大专院校,科技人才集聚,科教综合实力居全国前列.2009年6月国务院发布实施的<关中-天水经济区发展规划>中提出,要统筹各类科技资源、把西安建成国家级统筹科技资源改革示范基地,这既为西安科技产业的发展提供了难得机遇,也带来了严峻挑战.如何突破现有务件的制约,构建多元化的融资渠道,解决科技企业尤其是中小型科技企业的融资困境是亟待解决的突出问题.其中,通过设立专门为科技企业服务的科技银行,以企业融资需求为中心,提供股权与债权相结合的多种融资服务不失为一种现实选择.     

畅销书籍装帧中的版式设计探折

畅销书籍装帧中的版式设计，是作者与读者之间的最直观接触。版式设计要求书籍风格和书籍内容相吻合、呼应，才能更好地体现出这本书的内容与价值。在版式设计中把自己的想法和情感表达在设计当中。从而将书籍的内容与设计的情感融合在一起，增加文化内涵。     

西方现代绘画语言的自觉性探析

在西方现代绘画诸流派纷繁多变的艺术实践中,绘画作品被艺术家从立体及透视表象的纠缠中分割出来。现代艺术家们不再是去描绘一个已被理解的世界,而是寻求自己的绘画语言去从事世界的理解。现代绘画语言作为纯粹的艺术手段发展到对自身的觉察和审视,绘画语言的自觉是西方现代绘画诸流派发展的共同特征,同时也是后现代主义时期新绘画得以绝境逢生和发展的动力源泉。     

关于教育行政低效问题的探析

教育行政效率反映了教育工作的基本状况。文章通过对当前我国教育行政低效原因及现象的分析,指出了提高教育行政效率的基本对策。     

How does economic policy uncertainty drive gold–stock correlations? Evidence from the UK

In this article, we investigate the effects of economic policy uncertainty (EPU) on correlations between the UK stock market and gold market. We find that less certain economic policies result in lower correlations, while more certain economic policies result in higher correlations. The correlations are symmetric and show no structural breaks caused by the recent financial crisis. The recent financial crisis has not changed EPU effects on the correlations. The effects of one positive one-standard-deviation shock of the logarithmic change rate of the EPU on the correlations last approximately 19 months.