Vulnerability,values and heterogeneity: one step further to understand risk perception and behaviour

The aim is to investigate differences in risk perception and behaviour among different population groups selected by gender, age, country of birth, disability and sexual orientation in the light of general values and vulnerability. The analyses use data from two Swedish national surveys from 2005 to 2008. People with foreign background perceive controlled and dread risks as a greater threat than do native-born people, but there is no difference in behaviour when general values and vulnerability have been controlled for. Compared to women, men rate known and dread risks as lower, but controlled risks as higher. Further, men’s behaviour is more risk-oriented and less risk-reducing, and homosexuals and bisexuals are more likely than heterosexuals to report risk behaviour. Compared to previous studies of the so-called White Male Effect carried out in the USA, gender does not play a similar role in Sweden. On the contrary, it seems as if gender is of less importance and that the strength of the association varies depending on type of risk or risk behaviour.     

Choosing project risk management techniques. A theoretical framework

The pressure for increasing quality while reducing time and costs places particular emphasis on managing risk in projects. To this end, several models and techniques have been developed in literature and applied in practice, so that there is a strong need for clarifying when and how each of them should be used. At the same time, knowledge about risk management is becoming a matter of paramount importance to effectively deal with the complexity of projects. However, communication and knowledge creation are not easy tasks, especially when dealing with uncertainty, because decision-making is often fragmented and a comprehensive perspective on the goals, opportunities and threats of a project is missing. With the purpose of providing guidelines for the selection of risk techniques taking into account the most relevant aspects characterising the managerial and operational scenario of a project, a theoretical framework to classify these techniques is proposed. Based on a literature review of the criteria to categorise risk techniques, three dimensions are defined: the phase of the risk management process, the phase of the project life cycle and the corporate maturity towards risk. The taxonomy is then applied to a wide selection of risk techniques according to their documented applications. This work helps to integrate the risk management and the knowledge management processes. Future research efforts will be directed towards refining the framework and testing it in multiple industries.     

Real Estate Prices During the Roaring Twenties and the Great Depression

Using new data on market‐based transactions we construct real estate price indexes for Manhattan between 1920 and 1939. During the 1920s prices reached their highest level in the third quarter of 1929 before falling by 67% at the end of 1932 and hovering around that value for most of the Great Depression. The value of high‐end properties strongly co‐moved with the stock market between 1929 and 1932. A typical property bought in 1920 would have retained only 56% of its initial value in nominal terms two decades later. An investment in the stock market index (including dividends) would have outperformed an investment in a typical property (including net rental income) by a factor of 5.2 over our time period.     

土地利用效率的空间格局与溢出效应

采用全局空间自相关模型、Getis-Ord Gi*模型对中国31个省域的建设用地利用效率、农用地利用效率、土地利用综合效率进行分析。结果显示,三者均呈现空间集聚特征,建设用地热点区域面积小于农用地热点区域,建设用地热点区域与冷点区域面积仅占全部研究区面积的1/4,研究区半数省域属于土地利用效率无显著差异型。     

Internationalization and industrial districts: evidence from the Italian automotive supply chain

In this paper we focus on the determinants of internationalization and, in particular, on the specific role played by the agglomeration of small and medium sized enterprises (SMEs) through their proximity to a large firm. We study the characteristics of the internationalization process in a representative sample of 786 firms in the Italian automotive supply chain. After building an Internationalization Strategy Index (ISI), we perform a multinomial logit econometric analysis. The main findings of the empirical analysis are: (a) Italian automotive supplier firms mainly go in the foreign markets through export, i.e. the simplest internationalization mode; (b) as predicted in the literature, individual firm characteristics play a significant role in the probability of internationalization; (c) firms located in the province of Turin, where the dominant car assembler (Fiat) in Italy has its headquarters, or more generally, in large automotive industry districts, enjoy a clear localization advantage; (d) interestingly, we also find that internationalization is negatively correlated with the share of Fiat in suppliers’ sales, and that suppliers located in a district and less dependent on Fiat are also those adopting the most advanced internationalization strategies.     

服装实体店与网店的比较探讨

服装营销目前主要有服装实体店和网店两种营销模式,服装网店是顺应网络时代的发展要求而发展起来的,是服装市场营销的必然选择。本文就传统的服装实体店与新生的网店两种营销模式在地理位置的选择、资金成本的投入、消费者购买服装时的感官体验、客源量的比较、购物所需时间及交通条件、购物的安全和可靠性以及销售时情感与传统文化等方面的优劣进行了深入的比较探讨。     

国外企业参与高职教育的途径及趋势探析——以英国、德国、美国为例

工学结合是高职人才培养模式改革的切入点。当今英国、德国和美国企业通过参与高职招生、专业建设、教学过程、学业考核、师资建设等,推进高职教育工学结合的改革发展。企业参与高职教育呈现的趋势有:信息化,终身化,注重技能素质培养,加大合作性等。     

基于稀疏系数位置和归一化残差的压缩感知信号检测

信号检测是压缩感知理论研究的重要内容。针对当前压缩感知信号检测算法没有充分利用稀疏系数幅值和位置信息的不足,提出了一种新的检测算法。该算法首先引入归一化残差变量,有效克服了稀疏系数幅值波动大的缺点;然后,利用不同测量矩阵确定的稀疏系数位置信息,基于正交匹配追踪（OMP）算法实现目标信号检测。实验结果表明,算法的检测性能随着信噪比的提高而增强,且与压缩比负相关,运算复杂度较正交匹配追踪算法和仅利用稀疏系数位置信息的算法相当但检测性能分别提高了4 dB和1 dB.     

湖北省战略性新兴产业自主创新能力评价研究

提高湖北省战略性新兴产业自主创新能力,加快培育和发展战略性新兴产业成为带动湖北经济增长的新引擎。依据湖北省经济普查数据,创新性地构建了自主创新能力指标体系,将其分为4个子能力模块,运用因子分析方法建立了评价模型,对湖北省战略性新兴产业的自主创新能力进行了评价。根据评价结果,结合湖北的资源优势条件,从提高科技成果转化能力,加强产学研合作,留住本省人才、提高科研素质,培育龙头企业、提高市场盈利能力4个方面,提出了提升自主创新能力的对策建议。