欧洲能源交易所介绍

欧洲能源交易所（EEX）是全球仅次于欧洲气候交易所（ECX）的碳交易平台,其在电力市场、天然气市场和碳排放权交易市场均享有较高声誉。本文介绍了欧洲能源交易所在欧盟碳市场中的作用、交易产品、市场监察、结算服务等,以为我国碳交易所和碳市场的发展提供经验支持和智力支撑。     

运筹学CAI系统的开发研究

本文主要研究“运筹学计算机辅助教学系统”,这一系统将对传统教学方法和教学手段进行改革, 实现交互式教学, 大大提高教学质量和教学效果     

Regulation of relationships between heterogeneous farmers and an aquifer accounting for lag effects

Many environmental problems are due to damage caused by pollutants that accumulate with a time lag following their emission. In this study, we focus on nitrates used in agriculture, which can pollute groundwater many years after their initial application. A dynamic optimal control problem with heterogeneous farmers is proposed. The usual structural parameters such as the discount rate, the natural clearing rate and the lagged time interval between the occurrence of soil‐level pollution and the impact on groundwater are taken into account. We also examine pollution as caused by a continuous set of farms characterised by their individual performance index and by their individual marginal contribution to the pollution. The issue is further investigated by taking account of change in the information context, successively related to perfect information and to asymmetric information. As a result, when the delay between the spreading of N‐fertilizer and the impact on the aquifer increases, that is, the longer the lag, the steady‐state pollution stock and the steady‐state shadow price of the stock both increase. Moreover, we show that the optimal regulation may require a decreasing amount of fertilizer over time, even in the case of initial underpollution.     

正交多载波调制(OFDM)技术及其应用

本文首先介绍了正交多载波调制（OFDM）技术适用于高速数据传输的原理,着重讨论了OFDM基于FFT算法在基带实现多载波调制的原理和OFDM中的同步问题,最后对OFDM在宽带无线数据传输中的应用作了初步展望。     

贫困、经济增长与脱贫时间:基于中国城镇居民调查数据的分析

贫困指数是衡量社会总体贫困程度的指标,在众多的贫困指数中.本文选择具有良好性能的瓦特指数和由此派生出来的脱贫时间指数,分析了我国城镇上个世纪90年代以来的贫困变化趋势.研究发现,城镇贫困在1997年达到高峰,然后逐渐缓和;贫困人口的收入增长在初期能使脱贫时间迅速下降,但边际效果是递减的;贫困人口之间的收入分配不平等延长了脱贫时间:如果贫困人口的初始收入增加,会明显降低脱贫时间.     

信息技术服务及其标准化的实践与探索

文章介绍了上海宝信软件股份有限公司（以下简称宝信软件）在信息技术服务及标准化的过程中所开展的工作,以及在应用软件（解决方案）、运维业务、服务外包等方面的一些探索,期待通过实践走出一条提升IT服务质量的新路。     

成功运作电视选秀类节目的功能悖论分析——以"05超级女声"为例

结合超级女声成功运作的案例,深入分析功能悖论的三个关键要素,揭示成功运作电视选秀类节目的内在原因,探索一条社会效益和经济效益和谐双赢之路,以适应不断变化的受众需求和社会评价,以期再次提高电视选秀类节目的美誉度。     

Riding the Ever-Rolling Stream: Time and the Ontology of Violent Conflict

In this paper, we examine the ways in which the passage of time is dealt with in econometric studies of violent conflict and civil war with empirical attention to the dynamics of ethnic conflict. We argue that the mainstream approach to econometric studies of civil war is based on a time-invariant ontology and that this is not an appropriate or adequate way of capturing the causal patterns of violent conflict. Based analysis of replication datasets using structural break analysis and rolling windows, we show how careful attention to the passage of time reveals important macro-historical changes in the coefficients on ethnic diversity in explaining conflict incidence. We conclude that econometric studies of civil war need to pay more careful attention to the limitations on the generalizations that they draw through attention to the passage of time and better iteration with qualitative and historical studies.     

Spiritual Functions of Leisure and Spiritual Well-Being: Coping with Time Pressure

The purpose of this study was to develop a model of leisure style and spiritual well-being relationships, and the processes (spiritual functions of leisure) by which leisure can influence spiritual well-being. Also, the role of leisure in ameliorating the effects of time pressure on spiritual well-being was examined. Structural equation modeling using AMOS was employed to test direct and indirect effects models of the relationships among components of leisure style (leisure activity participation, leisure motivation, and leisure time), spiritual functions of leisure (sacrilization, repression avoidance, sense of place) and spiritual well-being (both behavioral and subjective). The model developed suggests that some components of people's leisure styles lead to certain behaviors and experiences (spiritual functions of leisure) that maintain or enhance spiritual well-being. These spiritual functions of leisure may also serve as coping strategies to ameliorate the negative influence of time pressure on spiritual well-being.     

U.S. Virgin Islands National Park:

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