利益相关者共同治理与企业所有权边界研究

利益相关者共同治理模式认为 ,企业所有权由股东及其它众多的利益相关者共同分享 ,但如何界定企业所有权边界是利益相关者共同治理模式面临的一个现实问题。本文从企业所有权安排的理论入手 ,阐述利益相关者共同治理模式下企业所有权的分配原则 ,是以股东为主导的所有权分配模式 。

一种支持属性重用的DCP-ABE方案研究

属性基加密(ABE)机制以属性为公钥,将密文和用户私钥与属性关联,能够灵活地表示访问控制策略,从而极大地降低数据共享细粒度访问控制带来的网络带宽和发送节点的处理开销。作为单授权机构ABE机制的推广,多授权机构ABE机制减轻了单一机构的工作负担,降低了风险,同时也更容易满足分布式系统的需求。文章针对目前多授权机构ABE方案中属性不能重用的问题,提出一个分权密文策略属性基加密(DCP-ABE)方案。该方案引入授权机构全局标识符,在加密阶段通过将属性(该属性满足密文的访问结构)相关的密文构件与该属性所属的授权机构的全局标识符进行绑定,使得不同授权机构所管理的属性能够重复使用,扩展了方案的实用性。此外,该方案中任何授权机构都可以动态加入或者离开该加密系统,不再需要中央授权机构对授权机构进行管理。

Peak-to-average power ratio reduction using selective mapping with unequal power distribution

A new approach for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems was proposed.This approach is based on assigning powers to the different subcarriers of OFDM using an unequal power distribution strategy.In addition,a reduced complexity selective mapping (RC-SLM) scheme was proposed.The proposed scheme is based on partitioning the frequency domain symbol sequence into several sub-blocks,and then each sub-block is multiplied by different phase sequences whose length is shorter than that used in the conventional SLM scheme.Then,a kind of low complexity conversions is used to replace the IFFT blocks.The performance of the proposed RC-SLM scheme along with the new approach was studied with computer simulation.The obtained results show that the proposed RC-SLM scheme is able to achieve the lowest computational complexity when compared with other low complexity schemes proposed in the literature while at the same time improves the PAPR reduction performance by about 0.3 dB.

The research on China equity fund about the ability of asset allocation

The ability of fund asset allocation is an important factor of influence the fund performance. Choose stock funds, starting from the stock fund investment strategy, different investment strategies have their respective asset allocation. For fund asset allocation ability, this paper chose different performance indicators, through the method of comparison between group and group, listed stock funds of our country classification in K - W single factor ANOVA. At the same time, according to the result of test, analyze the causes affect the ability of the fund asset allocation, and gives the corresponding investment advice.

The Problematic Build-pollution and Its Architectural Impact beyond the Architectural Uprising in Jordan （Case Study： Housing ＆ Commercial Buildings of Amman City）

By the adoption of architecture as a means for communication and discourse between the architect and the recipient, yet current arguments took the conscious of local architect away from the uniqueness and the concerns of the society, as well. It also dominated its creative and educational capabilities through making him distracted in formal non-rational overestimated compositions without dealing with the concerns and needs of the society and sympathize with its affection that led to the appearance of an intellectual crisis resulted from the loss of design strategy in the current trends among some Jordanian architects. As such, not only substantial amount of the leading architectural intellect had deteriorated to formal practices but also it took another approach, becoming incomplete intellectual isolation practicing an overestimated architecture that satisfies free markets requirements which appeared along with the globalization economy. This study attempts to comparatively investigate the variation in some architectural practices as a methodology based on design readings of the previous issues which were characterized of architectural uniqueness and current issues that lack of the existing intellectual references.

需求结构失衡的财政因素:一个分析框架

实现需求结构再平衡,推动经济均衡稳定增长,是自20世纪90年代中后期以来中国政府宏观调控一直着力追求的目标,但10多年过去了,政策效果并不明显,需求结构失衡依然在不断加剧。本文试图从财政角度对其中原因进行探析,通过对中国财政分权策略、财政制度安排以及财政政策失衡的深入分析,文章认为,分权策略扭曲了政府财政支出意愿,造成非经济型公共品供给不足,以流转税为主的财政收入制度则强化了政府执政偏向,造成财政资源分配偏重于税收贡献大的企业,从而使财政支出公共性进一步丧失,由于受工具性和居民消费倾向的双重约束,中国财政政策不得不更多依赖投资支出,从而出现财政政策失衡与需求结构失衡的循环累积。三者叠加效应就是居民消费能力被挤压,居民支出预期被恶化。