防恶意干扰的VANET双群联合定位算法

传统的无线定位方法直接应用于车辆自组织网络(VANET)时，会被窃听方利用定位信息，从而导致严重的安全隐患。为此，提出基于Bancroft方法的双群组合定位算法,用于保障车辆自组织网络中车辆定位的安全性和准确性。算法利用两个群组的智能车辆节点分别进行定位，利用两组解分别反求伪距值，如果所获得的伪距值与经过节点钟差修正后的原始伪距值基本一致，则认为这一组解为最终的定位结果，从而保证了定位的正确性。同时，双群定位的信息分散性保证了系统整体的安全性。理论分析及算法仿真表明,双群联合定位算法可使窃听方的误码率稳定在较高水平。     

Friend or Foe? The effects of contingent employees on standard employees' work attitudes

Using data from a large-scale national survey of employers and employees in Britain, we examine the impact of the presence of contingent employees on work attitudes of standard (full-time, indefinite-term) employees. Drawing on differing explanations for the increased use of contingent employment arrangements, we derive competing hypotheses about how this use affects standard employees' work perceptions and attitudes, and explore the impact of a number of potentially intervening factors. We find that contingent employees have little effect on standard employees' perceptions of work overload, but strongly reduce perceived job security, which in turn, mediates the negative effects of contingent employees on job satisfaction and organizational loyalty.     

Revisiting the labor supply effect of social security earnings test: New evidence from its elimination and reinstatement in Japan

We explore the labor supply effect of the social security earnings test in Japan on those aged 65–69 years through a combined examination of the elimination of the earnings test in 1985 and its reinstatement in 2002. We present evidence showing that the effects of changes in the earnings tests on the labor supply of the elderly are not symmetric, controlling for changes in the attributes of workers and firms. The repeal of the earnings test in 1985 did affect the earnings distribution of the elderly (especially for male), while its reinstatement in 2002 did not alter the earnings distribution.     

低碳城镇化对就业的促进作用及保障体系构建

增强人的生存和发展能力,促进人的全面发展是以人为核心的中国新型城镇化建设的终极目标,实现这个目标的前提就是要保障和实现充分就业。低碳城镇化是新型城镇化的重要内容和必由之路,低碳城镇化对就业的保障应该更具公平性并且按照就近原则来推进。文章认为,在低碳城镇化建设过程中,要促进就业增长和提升就业质量,必须优化产业布局、产业结构与发展模式,扩大就业空间;建立健全劳动力教育培训制度,培养适应低碳产业发展需求的劳动者,提高劳动者就业竞争力;推进城乡劳动力市场一体化建设,提高人力资源利用效率,增强社会就业公平性。     

我国城市居民最低生活保障制度发展与完善研究——以长沙市为例

我国城市居民最低生活保障制度是我国实施比较成功的一项社会救助制度。目前，长沙的低保制度在制度设计和运行方面仍存在消极的救助取向、平均式的救助标准、配套政策的负激励效应以及管理监督体系不健全等一些问题。为此，有必要对其进行探索改革，通过采取积极的福利政策、制定科学的保障标准，推行分类施助和差异救助、建立健全低保制度的管理监督体系等积极措施解决其存在的问题，更好地发挥最低生活保障制度的有效功能。     

Risk Perception and Buying Behavior: An Examination of Some Relationships in the Context of Cruise Tourism in Jamaica

Cruise tourism continues to grow substantially, even as many other forms of travel stagnate. In this era of increasing worldwide violence against tourists, safety, security, and risk abatement are becoming principal components in travelers' decision-making processes. This work examines the issue of perceived risk and safety and what impact these perceptions have on shopping behavior. The research takes place in Jamaica, a country with a reputation for aggressive vendors. Findings indicate that those visitors who traveled with others spent more time shopping and purchased more. Additionally, it was found that first time visitors express higher levels of discomfort with their surroundings than did repeat visitors, thus inhibiting purchase behavior. Finally, it was found that levels of perceived risk and security did have an impact on a traveler's intention to return to Jamaica.     

网络安全综合评价方法的应用研究

文章分析了计算机网络运行存在的风险;并从分段技术、加密技术、防火墙技术和抗病毒技术方面探讨了如何防范安全风险。     

数字化宿舍网络的研究和设计

随着IT技术的发展,数字化宿舍区的建设和发展逐步走进大学生的学习和生活。在数字化宿舍区建设中,开放的分布式控制网络系统与Internet的相互结合是控制网络系统发展的趋势。控制网络与信息网络的互连使网络结构更复杂、规模更庞大,对网络的安全性和可靠性提出了更高的要求。     

浅析部队网络安全保密价值

随着网络技术的普及发展和广泛应用,互联网已经成为大众生活离不开的工具,经济、文化、军事和社会活动都强烈地依赖于网络。网络安全和保密工作已成为事关国家安全、经济发展、社会稳定和军事斗争成败的重大战略性课题。     

浅析中非BIT全面保护和安全条款之适用

目前,有关非洲国家因战乱和暴力活动造成中国投资者人身和资产损害的情况不时发生。对此,因在实证研究的基础上,充分发挥中非BIT全面保护和安全条款在保护投资者免受人身损害,以及保护投资者法律权益两方面的积极作用。