计算机安全的相关技术防范路径分析

信息安全问题伴随着互联网的出现而诞生。涉及到国家的各种军事安全、政治文化等多方面。随着网络不断发展壮大而愈加突出,已成为威胁国家安全和社会快速发展的极大阻碍。引起了多国政府的极大关注。从信息安全所面临的问题及现状进行了阐述,并给出了我国信息安全防范的方法。     

从资本属性看劳资关系的平等性和公平性

中国经济转型时期资本在循环过程中的不公平、不平等问题,揭示了资本不可忽视的社会属性以及这种属性对劳资关系中平等性、公平性的影响。而"契约"作为连接资本与劳动力的重要环节,必然体现出二者之间的经济和社会关系,契约自身的不公平性和不平等性揭示出资本所蕴含的、其自身无法解决的社会与经济两方面的公平、平等和正义问题。因此,资本经济属性的实现并不会必然导致公平和平等,而无视资本的社会属性,经济越是发展,公平与平等程度越低。     

On the anticipation of IPO underpricing: Evidence from equity carve-outs

We investigate IPO market efficiency using a sample of equity carve-outs offered during the period of 1985–2005. Unlike IPOs examined in previous studies where trading during the pre-IPO book-building period does not exist and trading on the IPO date is rationed, in equity carve-outs, investors can trade in the non-rationed market for shares of the parent, which holds a significant fraction of the subsidiary. We find that the subsidiary's initial day return is significantly related to its parent's return over the book-building period, but unrelated to its parent's contemporaneous return. Neither the pre-IPO price revision of the subsidiary nor the return to the parent on the initial trading day can be predicted. While the portion of the subsidiary's initial return unpredictable from information available during the book-building period is significantly related to its parent's contemporaneous return, the predictable component of the initial return is not. We interpret these results as evidence consistent with market efficiency.     

中国科技金融效率时空分异特征及区域均衡性

科技金融是促进科技开发、成果转化和高新技术产业发展的重要引擎。结合DEA BCC模型与基尼系数分析方法，对中国内地29个省市2006-2016年的面板数据进行实证分析，探讨中国科技金融效率时间演变规律、空间差异及区域均衡性。结果表明：①总体而言，中国科技金融结合的综合效率均值、纯技术效率均值及规模效率均值分别为0.827、0.950、0.866，科技金融效率为非DEA有效，科技金融体系建设有待加强；②从时间变化趋势上看，2006-2016年，科技金融结合的综合效率、纯技术效率及规模效率均表现出不同程度的“V”型变动趋势，科技金融效率尚未形成持续稳定增长态势；③纯技术效率和规模效率对科技金融效率的影响有所不同，比较而言规模效率的影响更为显著；④从空间差异与区域均衡性上看，不同省市科技金融效率存在较大差距，中国科技金融效率基尼系数不断上升，区域差异不断扩大，各省市科技金融发展失衡程度差异显著。     

吴兆骞情系黑河考

金毓黻先生曾听东北史地学界前辈魏声和说 :“清代留意东北地理有三人 ,一为吴汉槎兆骞 ,一为胡三省传 ,一为曹彝卿廷杰 ,吴最初来 ,胡次之 ,曹居后 ,皆客居吉林甚久。”① 这三位学者 ,笔者均有专书专文论及。其中的吴兆骞 ,并无东北史地文章传世 ,但在他的诗词赋序中广为涉及。至于他亲临黑河所赋诗歌 ,至今无人探索。吴兆骞 (1 631——— 1 684)字汉槎 ,因排行第四 ,又名吴季子 ,是明末清初的著名诗人。早在上个世纪 2 0年代 ,就有我国学者任维火昆、孟森、谢国桢和日本学者高岩等人开始了对吴兆骞的研究。1 975年 ,笔者应国务院有关部委…     

新时期我国企业管理的几点思考

本文针对当代企业管理由以物的管理为主向以人的管理和文化建设为主转变的新的发展趋势 ,对人力资源管理和文化建设等与企业管理的“软件”方面有关的问题进行了讨论     

基于生态学的大学生创业环境探析

德国学者海克尔（E．H．Haeckel）于1866年提出生态学（ecology）一词，并将生态学界定为研究生物生存条件、生物及其群体与环境相互作用的过程及其规律的科学，其最基本的观点是整体论，它认为整个世界是由人、自然和社会组成的复合生态系统。当前，鼓励、支持和引导大学生创业也可以从生态学的角度加以探讨，     

任务驱动教学在《网页设计与制作》课程中的应用及影响研究

任务驱动教学是高职教育中提高学生实践能力的一种有效教学方法,本文探讨了高职教育中任务驱动教学的重要性,同时作者结合自身的教学阐述了在《网页设计与制作》课程中如何引入任务驱动教学,从而使学生达到职业岗位要求。     

Modified critical fractile approach for a class of partial postponement problems

This paper studies a single period partial postponement problem, which is motivated by an inventory planning problem encountered in Reebok NFL replica jersey supply chain. We consider a group of regular products each facing a random demand. There are two stocking options. One is to procure the regular products. The other is to stock a common component which can be customized later to any one of the regular products, after demand realization.We obtain an insightful interpretation of the optimality conditions for this class of problems, and use it to obtain rules of thumb that practitioners can incorporate into their inventory models to determine the stocking levels to minimize the supply chain cost. Instead of proposing a numerical procedure to obtain the optimal solution, we propose an adaptation of the classical critical fractile approach for this class of partial postponement problem. The closed-form formula obtained are surprisingly effective. Our numerical results suggest that this simple approach to inventory planning often comes close to the performance of the optimal solution obtained from numerical method.     

Overemployment,executive pay-for-performance sensitivity and economic consequences: Evidence from China

Using a sample of state-owned enterprises (SOEs) listed on the Shanghai and Shenzhen Stock Exchanges during the 1999–2009 period, we investigate the effects of overemployment on executives’ pay-for-performance sensitivity (PPS) and analyze how the behavior of firms with high/low PPS affects the number of surplus employees. We find the existence of a redundant workforce significantly weakens PPS and the role of accounting measures in performance assessment. In contrast to prior literature, we find that higher PPS is associated with a stronger incentive to lay off redundant employees and to limit future employee numbers. We also find that weaker government intervention strengthens managerial control over the future size of the workforce. Finally, our findings suggest that a heavier government policy burden on SOEs leads to lower tax rates and more government gains.