基于“家电以旧换新”回收数据评估电子废物产生量估算方法

比较了基于史坦福(Stanford)模型和保有量系数法对我国电子废物产生量的预测,并与中国家电以旧换新活动试点区域的实际回收统计数据进行对比,结果显示除电视机以外,两种估计方法的预测结果都显著高于以旧换新的实际回收数据.其原因首先是产品废弃量的变化深受产品技术变化影响,平板显示技术的快速普及导致CRT电视机废弃量出现短期激增,成为“家电以旧换新”实际回收品的主体,而洗衣机、电冰箱等传统大家电的产品实际使用寿命相对较长;其次是废旧产品回收面临非正式回收部门的竞争,以旧换新以较高的政府补贴引导一定数量的废弃产品流向正规处理企业,但还有相当数量的废旧产品流入了非正式的翻新加工和二手销售渠道.特别是空调和电脑,家庭消费占总消费量的比重较小,产品废弃后的材料回收价值和翻新维修价值都较高,补贴对提升回收量的影响相对较小;最后不同区域之间,预测结果与实际回收情况对比也存在明显的差别.考虑到家电以旧挟新政策停止以后,新颁布实施的废弃电器电子产品回收处理基金的补助力度大幅下降,有资质的回收处理企业重新陷入发展困境.有必要遵循生产者责任延伸制度的原则,积极鼓励扩大生产者的参与,从产品设计和废弃产品回收的逆向物流两方面提高回收利用系统的效率.同时,合理规划再生处理设施的区位和处理规模,需要根据区域和产品特点,对现有预测方法进行优化调整.     

On a symmetrization of diffusion processes

The latter author, together with collaborators, proposed a numerical scheme to calculate the price of barrier options. The scheme is based on a symmetrization of diffusion processes. The present paper aims to give a basis to the use of the numerical scheme for Heston and SABR-type stochastic volatility models. This will be done by showing a fairly general result on the symmetrization (in multi-dimension/multi-reflections). Further applications (to time-inhomogeneous diffusions/ to time-dependent boundaries/to curved boundaries) are also discussed.     

The Cost of Carbon: Capital Market Effects of the Proposed Emission Trading Scheme (ETS)

In March 2008, the Australian Government announced its intention to introduce a national Emissions Trading Scheme (ETS), now expected to start in 2015. This impending development provides an ideal setting to investigate the impact an ETS in Australia will have on the market valuation of Australian Securities Exchange (ASX) firms. This is the first empirical study into the pricing effects of the ETS in Australia. Primarily, we hypothesize that firm value will be negatively related to a firm's carbon intensity profile. That is, there will be a greater impact on firm value for high carbon emitters in the period prior (2007) to the introduction of the ETS, whether for reasons relating to the existence of unbooked liabilities associated with future compliance and/or abatement costs, or for reasons relating to reduced future earnings. Using a sample of 58 Australian listed firms (constrained by the current availability of emissions data) which comprise larger, more profitable and less risky listed Australian firms, we first undertake an event study focusing on five distinct information events argued to impact the probability of the proposed ETS being enacted. Here, we find direct evidence that the capital market is indeed pricing the proposed ETS. Second, using a modified version of the Ohlson ( 1995 ) valuation model, we undertake a valuation analysis designed not only to complement the event study results, but more importantly to provide insights into the capital market's assessment of the magnitude of the economic impact of the proposed ETS as reflected in market capitalization. Here, our results show that the market assesses the most carbon intensive sample firms a market value decrement relative to other sample firms of between 7% and 10% of market capitalization. Further, based on the carbon emission profile of the sample firms we imply a ‘future carbon permit price’ of between AUD$17 per tonne and AUD$26 per tonne of carbon dioxide emitted. This study is more precise than industry reports, which set a carbon price of between AUD$15 to AUD$74 per tonne.     

境内人民币银行卡清算组织的反垄断法监管--基于“强制推行POS直联”案例的研究

中国银联是目前我国境内唯一的人民币银行卡清算组织,应预防和制止其滥用基础网络业务的市场支配地位排除、限制发卡和收单等竞争性业务领域的竞争。本文在论证《反垄断法》对中国银联的适用性基础上,着重分析中国银联强制推行POS直联的垄断行为本质,指出其涉嫌滥用基础网络业务的市场支配地位,实施了拒绝交易和搭配销售。制止中国银联的垄断行为,保护市场公平竞争,不仅需要理清反垄断法监管与中国人民银行监管的关系,还要剥离纵向一体化企业“银联商务”。     

桥梁深水基础施工技术研究

随着我国综合国力的不断提升,横跨长江大河的桥梁不断涌现。桥梁的深水基础施工是大跨度桥梁施工的重要组成部分。桥梁深水基础施工所处的环境比较复杂,在工程实际中一般采用围堰和钢吊箱进行施工。本文以***桥梁深水基础施工为背景,详细的阐述了双壁钢围堰法在深水基础施工中的应用,并做了简单的数值模拟,验证了双壁钢围堰法的可用性。     

装卸搬运机械设备配置优化研究

装卸搬运活动伴随着物流的始终,成为提高物流效率、降低物流成本、改善物流条件、保证物流质量最重要的物流环节之一。文中以武汉市中小物流企业为载体,对企业中的装卸作业能力进行调研,着重分析机械作业能力与现场作业量之间最佳配合状态,通过数据计算和综合费用分析,确定最佳装卸机械配套方案,用于企业配置装卸机械能力的实践。     

工程建设项目招标采购方案的制定

随着我国社会水平的提高,经济步伐的推进,我国的工程建设项目也在这个过程中得到了很大程度的发展。而在工程建设项目中,对于相关建材材料的招标采购工作也是非常重要的一个环节,对于工程项目的整体质量以及建设成本都能产生很大的影响。在本文中,将就工程建设项目招标采购方案的制定进行一定的分析与探讨。     

高校专业技术岗位分级聘用工作若干问题探析

高校专业技术岗位分级聘用工作旨在加强专业技术人员分类分层次管理,完善人才遴选、聘用、评价、激励与保障机制,对专业技术职务评审工作起着良好的承接作用。文章就专业技术岗位分级聘用工作实施以来存在的问题提出了看法,并提出了完善方案。     

基于SIMULINK的某型反坦克导弹攻顶弹道方案设计研究

在反坦克导弹的研制中,弹道方案的设计具有重要地位。本文基于SIMULINK仿真平台,在导弹外弹道运动方程的基础上,对某型反坦克导弹攻顶弹道方案进行了初步设计,提出了一种能够实现有效攻顶打击的弹道方案,并通过仿真结果分析了各运动方程中各参数变化对攻顶弹道效果的影响。     

曹妃甸工业区炼化一体化项目环境风险应急预案研究

利用风险评价分析结果,提出了曹妃甸石化行业环境风险管理及防范措施,系统地提出码头溢油、储罐区火灾爆炸以及毒物泄漏的预防措施,并提出应设置装置（码头）、曹妃甸石化炼化公司和社会三级的应急预案。万一发生事故,应能采取紧急措施进行处理,将事故对人员、财产和环境的损失降低到最小程度。