Life cycle assessment in the food supply chain: a case study

This research aims at assessing the environmental impact of the poultry supply chain from cradle to grave using case study research and also life cycle assessment (LCA). While a limited number of generic poultry production LCA studies have been published, fewer yet assess the whole process of a specific organisation, none comparing the increased impact of further processing. Our results show that irrespectively of the impact assessment method utilised, the process of producing portions is considerably higher in total environmental impact due to the extra raw material required to produce the same mass into retail. Our research contributes to the growing number of LCA studies and could be used by practitioners for comparison against national and international averages. From a theoretical point of view, this research provides new insights into the relationship between vertically integrated supply chains and environmental performance which has not been examined in the past.     

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。     

我国建筑节能对策研究

随着人民生活水平的逐渐提高,对小区建筑保温要求越来越高,但我国单位建筑面积耗能量比气候条件相近的发达国家要多2倍左右。本文从我国目前民用建筑所面临高耗能的严峻形式出发,阐述建筑节能的必要性。并针对我国建筑发展情况提出切实可行的技术方法,以及针对实施过程中出现的问题提出合理的对策。     

我国选煤业的节能降耗减排

主要阐述了选煤产业"节能减排"的作用,提出了选煤厂选择合理的选煤工艺、节电降耗、节水降耗、降低介耗等节能降耗的途径。     

实施标准战略加快我国海洋能的开发利用

能源安全和温室气体减排是全球经济发展面临的重要问题,世界各国都在规划新的能源替代战略。海洋能作为一种有利于环保清洁的可再生能源,它的开发利用越来越受到我国政府的重视,由政府直接推动、各方积极参与的开发利用行动正逐步展开。海洋可再生能源开发利用标准体系的建立无疑对我国海洋能开发利用具有重要的现实意义。     

Housing, taxation and retirement provision

This paper considers the tax treatment of housing and the issue of savings for retirement in the context of a simplified model that still allows key aspects of the household context to be realistically represented. A model is developed in which both housing and financial assets can be used as vehicles for household saving. Individuals face perfect capital markets and choose between owner-occupied and rented accommodations. For the model developed, it is shown that the tax advantage of owner-occupied housing is not fully removed even if imputed rents are subject to income taxation. However, deferred income taxation for both housing and savings in the form of financial assets would result in an equal treatment of tenants and owner-occupiers.     

交通基础设施、空间溢出与经济增长:来自中国的实证研究

This paper develops an empirical model to test the spatial spillover effects of transport infrastructure on economic growth. It uses spatial econometric techniques and provincial panel data of China from 1993 to 2004 to analyze the contribution of transport infrastructure to the economic growth of local province and its spatial spillover effects on the economic growth of other provinces. The main findings include: (1) Transport infrastructure and economic growth of China show an evident pattern of spatial clustering. They largely congregate in developed eastern coastal regions, forming a gradient gradually diminishing from east to west. (2) Output elasticity of local transport infrastructure is 0.106, between the values calculated by early researchers with time series data and panel data. (3) Spatial output spillovers from transport infrastructure are largely positive, but evidences of negative spatial spillovers are also found with population density spatial weights matrix model.      

南非突发电力短缺危机及其应对措施

2008年1月中下旬,南非突然爆发电力短缺危机,各界为之震动.本文简要介绍了此次危机的情况,解析了危机发生的原因,阐述了南非政府为应对此次突发电力短缺危机所采取的各项措施,并提出了相关建议.     

传统运输企业向现代物流企业转变的分析与对策

分析物流的特点及其在国民经济及企业发展中的地位，分析传统运输企业向现代物流企业转化的客观市场条件，结合我国物流发展现状，讨论我国传统运输企业向现代物流企业转变的必要性与可行性，进而分析我国发展物流业存在的问题和机遇，并提出传统运输企业向现代物流企业发展的对策和建议。     

Cultural legitimacy and framing struggles in innovation journeys: A cultural-performative perspective and a case study of Dutch nuclear energy (1945-1986)

This article contributes to the field of innovation studies by addressing the role of cultural legitimacy in technical innovation journeys. The article develops a new perspective that connects insights from discourse theory, interpretive approaches to culture, cultural sociology and social movement theory. In contrast to functionalist and structuralist approaches (which tend to conceptualize culture in a top-down deterministic manner), our cultural-performative perspective emphasizes agency, collective sensemaking and framing struggles. Cultural change is a contested process, in which various groups perform on public stages to influence the attitudes and opinions of relevant audiences who provide financial resources, protection or support relevant for innovation journeys. We demonstrate the usefulness of this perspective with a longitudinal case study of nuclear energy in the Netherlands (1945-1986), which encompasses both the creation of legitimacy in the 1950s and 1960s, and its contestation by an anti-nuclear movement in the 1970s, which halted the innovation journey.