Burn or bury? A social cost comparison of final waste disposal methods

This paper evaluates the two well-known final waste disposal methods, incineration and landfilling. In particular we compare the social cost of two best-available technologies using a point estimate based on private and environmental cost data for the Netherlands. Not only does our comparison allow for Waste-to-Energy incineration plants but for landfills as well. The data provide support for the widespread policy preference for incineration over landfilling only if the analysis is restricted to environmental costs alone and includes savings of both energy and material recovery. Gross private costs, however, are so much higher for incineration, that landfilling is the social cost minimizing option at the margin even in a densely populated country such as the Netherlands. Furthermore, we show that our result generalizes to other European countries and probably to the USA. Implications for waste policy are discussed as well. Proper treatment of and energy recovery from landfills seem to be the most important targets for waste policy. Finally, WTE plants are a very expensive way to save on climate change emissions.     

Learning in Design and Technology: The Impact of Social and Cultural Influences on Modelling

The paper introduces the highly problematic nature of modelling in design and technology education and examines the relationship between cognitive and concrete modelling. Its aim is to gain insight into what learners do, rather than what others say they ought to do in their learning activities. The variety of purposes that educators have for learners’ modelling are discussed through examining the contested curriculum justification for design and technology education itself. The paper proposes that learners’ modelling cannot be extracted from the social milieu in which they act and it provides some insights of these social influences through the analysis of two case studies. Their settings are a girls’ secondary school and a college of higher education. Each case study is presented independently but organised with a common format to consider a) the impact of assessment on learning intentions and outcomes; b) cultural influences on learning and modelling; c) social influences on learning and modelling. A discussion of the emergent themes considers implications for teachers. This revised version was published online in July 2006 with corrections to the Cover Date.     

我国投资基金业绩的持续性分析

基金业绩的持续性是指业绩优秀的基金以后一段时间继续保持优秀的业绩,而业绩差的基金继续表现出差的业绩。如果基金具有持续性,对于投资者来讲,他们可以买进前期业绩优秀的基金,而卖出前期业绩差的基金,来获取超额收益,投资者不必耗费大量的资金和时间去评价和选择基金经理。本文就基金业绩持续性的研究理论方法进行阐述,并对我国投资基金作实证分析。     

Backtesting Value-at-Risk: A Duration-Based Approach

Financial risk model evaluation or backtesting is a key partof the internal model's approach to market risk management aslaid out by the Basle Committee on Banking Supervision. However,existing backtesting methods have relatively low power in realisticsmall sample settings. Our contribution is the exploration ofnew tools for backtesting based on the duration of days betweenthe violations of the Value-at-Risk. Our Monte Carlo resultsshow that in realistic situations, the new duration-based testshave considerably better power properties than the previouslysuggested tests.     

电子商务环境下的内部控制与风险管理

会计职业人员对评估内部控制并实施风险管理的技能已熟知多年。这种经过时间检验并证明行之有效的经验和专业技能是会计职业产业独特影响的知识基础。随着电子商业的发展，尽管目前尚没有统一且标准的定义，但其发展对会计职业却提出了挑战。从某种意义上讲，企业的风险评估增加了很多新的内容，而与之相对应的内部控制也需要进行必要的调整，从而实行风险管理。本文拟就电子商务环境下的内容控制和风险 管理及其手段进行分析。     

成人教育面授教学的现状及对策

面授教学是成人教育中重要的教学环节,对成人教育质量有着举足轻重的作用。本文从面授教学质量、面授管理、教材及教学环境等几方面论述了成人教育面授教学的现状,从教师、管理、出勤、考核、资料等诸多方面,提出了加强面授教学及管理的对策。     

工程力学教学与学生能力的培养

根据工程力学课程的特点，从力学的基本概念、教学方法和教学模式上对工程力学的教学体系进行了分析，以充分调动学生的学习积极性，进一步提高学生的逻辑思维能力和综合解决问题能力，增强学生的创新意识和创新能力。     

Research on Intangible Assets Evaluation System Info for Further Development in China

Nowadays, there still exist many problems in the research of the intangible assets evaluation theory, such as the division and isolation from others, weak support for the practice, etc. This paper puts forward a new system info which is to direct the practice in the socialist market economy and network society, The new system info breaks through the traditionally practical one, which is ＂evaluation aim value standard-evaluation method-- evaluation result＂. Furthermore, this system into could support the intangible assets evaluation to practice better than before and adapt to the new demands in socialist market economy environment and network society.     

关于企业生命力评估的指标体系设计

阐述了评估企业生命力的意义，提出了评估企业生命力的原则，并设计了企业生命力评估的指标体系。