浅析电子商务中的信息安全风险评估

本文结合电子商务自身特点,从对信息资产风险对象的确定、风险评估方法选择、评估的具体指标评价和结果的分析后,确定信息资产的风险控制策略。同时从投入与收益的比较选择中,简单分析控制措施选择与成本预算方面的关系。     

Bias Correction in the Dynamic Panel Data Model with a Nonscalar Disturbance Covariance Matrix

Approximation formulae are developed for the bias of ordinary and generalized Least Squares Dummy Variable (LSDV) estimators in dynamic panel data models. Results from Kiviet [Kiviet, J. F. (1995), on bias, inconsistency, and efficiency of various estimators in dynamic panel data models, J. Econometrics68:53-78; Kiviet, J. F. (1999), Expectations of expansions for estimators in a dynamic panel data model: some results for weakly exogenous regressors, In: Hsiao, C., Lahiri, K., Lee, L-F., Pesaran, M. H., eds., Analysis of Panels and Limited Dependent Variables, Cambridge: Cambridge University Press, pp. 199-225] are extended to higher-order dynamic panel data models with general covariance structure. The focus is on estimation of both short- and long-run coefficients. The results show that proper modelling of the disturbance covariance structure is indispensable. The bias approximations are used to construct bias corrected estimators which are then applied to quarterly data from 14 European Union countries. Money demand functions for M1, M2 and M3 are estimated for the EU area as a whole for the period 1991: I-1995: IV. Significant spillovers between countries are found reflecting the dependence of domestic money demand on foreign developments. The empirical results show that in general plausible long-run effects are obtained by the bias corrected estimators. Moreover, finite sample bias, although of moderate magnitude, is present underlining the importance of more refined estimation techniques. Also the efficiency gains by exploiting the heteroscedasticity and cross-correlation patterns between countries are sometimes considerable.     

"中国第一届电子商务实验室建设与推广研讨会"综述

电子商务正在极大地改变着全球商务活动的结构,如何培养高质量的电子商务人才成为我们面临的新的严峻的挑战。提高电子商务教学质量,必须加强电子商务实验室的建设。这种建设包括硬件建设、软件建设和教材建设。会议提出了电子商务实验室建设模式,并对电子商务教材提出了建设性的建议。     

论洗钱罪的防治

洗钱罪是众多经济犯罪和有组织犯罪的派生物,具有对社会的危害性、过程的复杂性、方法手段的专业性、范围的国际性等特点。反洗钱是十分复杂的法治问题,涉及一个国家的社会、政治、经济等方面的内容。要加大反洗钱力度,就必须在防治上狠下功夫,从思想、立法、执法、金融防范、国际合作等领域采取措施,要标本兼治,才能构筑符合我国情况的反洗钱体系。     

欧元国际地位发展探析

欧元自1999年正式启动以来,在国际市场中的使用稳步成长,在第三国的使用日益广泛,已成为有信誉、稳定的第二大国际货币。但欧元国际地位的发展在各市场部分中具有一定的不平衡,地域性显著,尚不具备全球性。欧元国际地位的这种发展状态是历史性和变革性因素以及欧元主要使用者共同作用的结果,在诸多有利因素的支持下,欧元作为第二国际货币的地位在未来将得到进一步加强。     

电子商务模式决策的支持模型设计

借助潜在需求这一概念提出决策分析框架,帮助决策者在决策制定的最初分析阶段排除那些与本企业环境和供应链条件不相容的电子商务模式;旨在为电子商务从业者和研究人员提供一个实施电子商务模式决策分析时的支持模型.     

γ辐照Al~(3+):α-石英晶体的光吸收谱及其GOW心的色心电子能态

本文用水热法生长了Al~(3+):α-SiO_2石英晶体,测量了γ射线辐照赋色的晶体的吸收光谱。主要的可见吸收带位于2、61ev,2.07ev和2.30ev处。其中2、6ev和2、07ev吸收带是GOW心(即〔Al_(e+)〕°心)产生的色心吸收带。本文理论上计算了GOW心的电子能态。对应该心两个吸收带的理论值分别位于2、72ev和1.94ev与实验结果相符。     

电子信息专业词典的研究与应用

介绍了一种电子信息专业词典。该词典在0FFICE的ACCESS软件平台上设计开发,成为一种专业术语的数据库系统。该系统具有编辑和查询两大功能,录入了上万条电子信息专业词汇。利用系统的编辑功能,还可以对词汇动态更新,弥补了一般专业词典更新缓慢的缺陷。词典结合教学内容对词条的专业解释,使词典成为某种意义上的电子专业百科书,有助于拓展学生的专业知识和教学工作。     

Consumer trust in B2C e-Commerce and the importance of social presence: experiments in e-Products and e-Services

Reducing social uncertainty—understanding, predicting, and controlling the behavior of other people—is a central motivating force of human behavior. When rules and customs are not sufficient, people rely on trust and familiarity as primary mechanisms to reduce social uncertainty. The relative paucity of regulations and customs on the Internet makes consumer familiarity and trust especially important in the case of e-Commerce. Yet the lack of an interpersonal exchange and the one-time nature of the typical business transaction on the Internet make this kind of consumer trust unique, because trust relates to other people and is nourished through interactions with them.This study validates a four-dimensional scale of trust in the context of e-Products and revalidates it in the context of e-Services. The study then shows the influence of social presence on these dimensions of this trust, especially benevolence, and its ultimate contribution to online purchase intentions.