From sending to host societies: immigration in Greece,Ireland and Spain in the 21st century

In a relatively short period of time, new immigration patterns have changed the geography of immigration of the EU15, bringing three old emigration countries, Ireland, Spain and Greece, to the forefront of the new immigration wave. This article studies the analogies and differences of the recent immigration experience of this group of countries, focusing on the demographic characteristics of the immigrants (origin, sex, gender and education), labour market insertion (wages, labour market segregation and quality of matching) and overall economic performance in terms of poverty rates.     

Supply chain integration mechanisms for alleviating supply problems in manufacturing firms

Suppliers are expected to reduce manufacturing firm supply risks by minimizing supply failures and by resolving supply problems, even those ones resulting from firm’s actions. Integration mechanisms may enhance interaction and collaboration in the firm supply chain, especially in the buyer-supplier interface, to reach these goals. Based on case studies in four North-American manufacturing companies in the electronic and aerospace industries, we analyzed the importance of integration mechanisms for manufacturing firms to address supply problems. We also explored some drivers supporting those mechanisms. Supplier commitment was found to be a key integration factor to address supply problems. This may be accomplished by trust and power mechanisms. Internal integration between purchasing and manufacturing groups also played a significant role in supplier collaboration at the problem solving process. Customer integration seemed more important to address supply problems for contract manufacturers than for Original Equipment Manufacturing (OEM) firms. Although supply problems might originate several stages upstream in the supply chain, surprisingly there was no integration beyond direct suppliers in the manufacturing firm supply chain.     

煤层气井注入/压降试井工艺方法及存在的问题

目前在确定煤层气井的渗透率及储层参数时,广泛采用注入／压降测试的方法,单项注入／压降测试是目前煤层气勘探开发中最常用、最有效的试井方法。本文全面阐述了煤层气井注入／压降试井的施工工艺、施工工艺中存在的问题。     

基于重力式仓储的轮胎自动仓储关键技术研究及布局优化——以马牌轮胎上海物流中心为例

以马牌轮胎上海物流中心为例,分析了重力式自动仓储系统的关键技术设备以及影响空间布局优化的因素,依据布局优化原理对轮胎的重力式自动仓储系统提出布局优化方案。     

浅析太阳能在建筑节能领域中的应用

本文结合目前建筑设计的节能要求,对目前太阳能在建筑节能领域中的应用及发展前景作了比较与分析,谨供大家作参考之用。     

Mixed methods studies in entrepreneurship research: Applications and contributions

Mixed methods research is becoming an increasingly popular approach in several fields. However, its application in the field of entrepreneurship has not been studied. The authors reviewed the use of mixed methods research in three entrepreneurship journals and two leading generalistic journals that publish entrepreneurship research, examining the main purposes and designs. A total of 955 articles were reviewed and 81 mixed methods studies were identified. The analysis of these articles revealed opportunities associated with the application of this approach. Mixed methods may help to improve entrepreneurship research addressing challenges emphasized in earlier studies. Suggestions on why and how to use mixed methods research are offered, and recommendations are provided to guide future mixed methods studies to advance our understanding of the entrepreneurial phenomenon.     

Labour flexibility and job market segmentation in Spain: a perspective from the labour demand side

The aim of this research is to conduct a quantitative analysis of the factors leading Spanish companies to adopt certain forms of organization that are typical of flexible businesses and high performance organizations. Despite the supposed inflexibility of the Spanish labour market, the results both point towards the high capacity of Spanish companies to select the form of work organization that best suits them and show the key role that competitive strategy plays when it comes to differentiating or segmenting types of work or workers, over and above the rigid working regulations that, purportedly, standardize labour relations in Spain.     

基于理性预期的宏观计量模型研究

理性预期在现代宏观经济学中起着重要的作用。传统的宏观计量经济模型没有考虑到理性预期的影响。因此,受到理性预期学派的批评。文章明确引入理性预期,建立了基于中国数据的月度宏观计量模型。在此基础上,文章系统分析了宏观经济中各种变量之间的关系,以及政府政策对宏观经济的影响。     

Elicitation of Expert Opinion in Benefit Transfer of Environmental Goods

Benefit transfer is a method for estimating the value of environmental goods that involves the use of past information on identical or similar goods. This paper considers the extent to which benefit transfer can be based on prior distributions elicited from expert opinion. We propose two alternative methods to elicit the parameters of a prior distribution from experts on environmental valuation. An experiment is carried out on the value of National Parks in Spain. The results from the elicited distributions are compared with the information provided by onsite samples of visitors. The results indicate that individual experts made different predictions about the potential value of the policy areas that were diverse and unable to accurately predict the value for each policy site. However, the average across the elicited distributions approaches the estimated distribution with empirical data and accurately predicts the relative values for the two policy sites considered.