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。     

‘Refugees welcome?’ The interplay between perceived threats and general concerns on the acceptance of refugees – a factorial survey approach in Germany

The on-going migration of refugees to Europe has fuelled debates about the indigence of refugees and the perceived legitimacy of individual claims for asylum in different receptive countries. With a substantial body of research that has investigated the antecedents of attitudes towards immigrants, evidence on whether those underlying assumptions hold true for refugees as well remains scarce. The paper applies the framework of Intergroup Threat Theory to arrive at competing hypotheses with regard to the acceptance levels of refugees. We use pooled data from two probabilistic samples drawn in the German city of Dresden and apply a confounded factorial survey design to extend previous research on attitudes towards refugees. We find that natives perceive political persecution and war as justified reasons for seeking asylum in Germany, while socio-demographic characteristics of respondents and refugees are of minor importance. Foremost, the individual level of respondent’s fear of crime represents a crucial moderator of the perception of refugees as threatening.     

范德瓦尔斯方程的统计解释

本文用统计的方法导出范德瓦尔斯方程及修正值的具体表达式,并讨论修正量与状态量的关系,给出刚性球分子对气体体积、压强所造成的影响.     

Welfare Rigidity,the Composition of Public Expenditure and the Welfare Trap

Welfare expenditure is characterized by rigidity, i.e., it goes up easily but is very hard to get down. We introduced welfare rigidity into an endogenous growth model that includes government expenditure to analyze the impact of welfare rigidity and the composition of public expenditure on economic growth and family utility. Our findings show that welfare spending and economic growth have a non-monotonic relationship that is negative or inverted U-shaped depending on cross-country differences. Higher welfare rigidity reduces long-term economic growth and household utility. According to the estimated optimal size of welfare expenditure, China, as a developing country with a large population, has to do all it can to improve people’s livelihood but must at the same time weigh its limited resources so that its welfare expenditure does not fall into a “welfare trap.”     

Navigating the COVID-19 pandemic in the contingency framework: Antecedents and consequences of public’s stance toward the CDC

This study applied the contingency theory of conflict management to examine how contingency factors influence the public’s perceptual and behavioral responses to COVID-19 and stance toward the Centers for Disease Control and Prevention (CDC). In particular, we tested political ideology as an important individual characteristic variable to examine its roles in the contingency theory framework. The findings revealed that two situational variables (i.e., threat appraisal and attitudes toward CDC) positively influenced the public’s contingency accommodation stance toward the CDC. Furthermore, greater conservatism was significantly associated with lower levels of threat appraisal and more negative attitudes toward the CDC, however it did not influence the stance toward the CDC. Theoretical and practical implications of the findings and directions for future research are discussed.     

某高架桥分岔处局部应力分析

对某高架桥分岔处局部应力进行仿真分析。按照实际施工过程,考虑最不利计算荷载,根据平截面假定,分别对钢梁单独受力和钢-混凝土组合梁两种工况进行计算。结果表明分岔处整体受力良好,安全储备大。     

Successful prevention may not be enough: A case study of how managing a threat triggers a threat

This case study examines student perceptions of a university's management of an alleged threat against their campus that was posted on Facebook. The timeline of events describes how the university's threat prevention response triggered a rumor crisis due to incomplete and poorly timed official information dissemination. A convenience sample of students completed questionnaires assessing perceptions of informal and formal communication about the alleged threat, satisfaction with threat prevention, and perceptions of the emergency text message system. Satisfaction with the university's response varied by students’ feelings of information adequacy. Some students resisted registering for the emergency notification system.     

Marketing of Voluntary Organizations as Contract Providers of National and Local Government Welfare Services in the UK

Voluntary organisations have become major providers of numerous social welfare services that previously were supplied by the state. In Britain, between 35 and 40% of the average human services charity’s annual income now derives from government (predominantly local government) sources, meaning that the acquisition of fresh contracts to undertake government funded work, in conjunction with the maintenance of good relations with government funders vis-à-vis current assignments, is increasingly important for ensuring a human service charity’s financial survival. An organization that wishes to obtain new contracts and to keep government bodies satisfied with its present activities will need to market itself effectively. This empirical study examined two aspects of charity marketing relevant to this requirement: the extent to which voluntary organizations applied the principles of strategic account management (otherwise known as key account management) to their relations with government funders, and the organizational characteristics (passion and commitment, low wage costs, etc.) that they emphasized to government bodies when making bids. A number of organizational variables (e.g., mission rigidity, strategic intent, short term operational focus) were employed in regression analyses as possible determinants of: (i) the degree to which a charity used strategic account management; and (ii) the genres of the organizational characteristics that it accentuated when tendering for government funded work.

折断的需求曲线:传统与当代的理解

传统的折断的需求曲线模型 ,没有明确假设厂商之间的信息不对称 ,仅仅讨论了厂商之间的简单定价反应行为。模型在当代的一个扩展 ,明确假设了在顾客与厂商之间信息分布不对称 ,探讨了他们对于价格变动的反应不对称行为的各异性和粘性价格的成因 ,将微观模型的问题域从寡头市场扩展至垄断竞争市场。模型在当代的又一个扩展 ,揭示了具有最大化动机和理性预期的行为人之间的博弈 ,会引发微观价格粘性 ,进而集结为宏观价格水平粘性 ,使得总体市场难以出清 ,因此政府的适度调控有必要