数字化校园网中安全策略的分析与应用

为保障校园网络安全,保护核心资源,建立完善安全的校园网络,从网络安全策略的角度对校园网络管理中的安全问题进行了层次划分,建立分层安全方案：外部网络传输控制层;内外网间访问控制层;园区网内部访问控制层;操作系统及应用软件层;数据存储层。并对各分层安全方案进行阐述。     

多元资本网络:理论框架的构建

企业价值创造来源于财务资本与非财务因素的耦合,而该耦合机理的研究,则演变为对于多元化的资本网络的框架研究,因此多元资本网络的形成机理、演化规律和治理机制构成了本论文的研究主题。本研究认为资本网络是结构性地嵌入在企业网络和企业价值网络中,其演化是通过多元资本结构和资本转换来实现的,多元资本结构影响企业价值创造,资本转换实现企业价值创造。多元资本网络的治理则是传统科层治理和网络治理的有效融合,本论文还提出了多元资本网络治理中控制权相机配置的理论框架。     

Liquidity, analysts, and institutional ownership

In this paper, we investigate the empirical relationship between institutional ownership, number of analysts following and stock market liquidity. We find that firms with larger number of financial analysts following have wider spreads, lower market quality index, and larger price impact of trades. However, we find that firms with higher institutional ownership have narrower spreads, higher market quality index, and smaller price impact of trades. In addition, we show that changes in our liquidity measures are significantly related to changes in institutional ownership over time. These results suggest that firms may alleviate information asymmetry and improve stock market liquidity by increasing institutional ownership. Our results are remarkably robust to different measures of liquidity and measures of information asymmetry.     

要素禀赋、政策支持与金融资源配置:产业转移的承接模式研究

本文以商务部认定的湖南、江西省四个加工贸易梯度转移重点承接地为样本,对比分析要素禀赋、政策支持和金融资源配置的异同及其影响,在总结归纳各自承接模式的特点的基础上,提出了"精品园区+核心企业+直接融资+金融助推"的较优模式,认为政策支持是影响承接产业转移的直接因素;要素禀赋的影响力有弱化趋势;金融资源配置是影响承接力和产业结构优化升级的重要因素;对待处于不同生命周期的产业转移企业,承接的工作重点应各有侧重.因此,承接产业转移要与"转方式、调结构"的战略方向一致.注重与本地的产业互补相结合,并需要金融部门的主动参与和服务创新.     

法律完备度与证券市场内幕交易监管有效性分析

本文从执法者的行动策略和内幕交易监管制度这两个方面,分析了我国内幕交易法律的完备度,并寻找我国内幕交易监管有效性相对较弱的原因。通过与发达国家证券市场执法策略和制度安排的比较,发现内幕交易法律的不完备性将直接影响到内幕交易监管的有效性。一个国家的内幕交易法律越完备,其内幕交易监管的有效性也就越强。     

人口年龄结构与住宅价格调控

在人12老龄化背景下．当人12总量和年龄结构发生质的变化时,将对住宅价格产生深远影响。本文在人口学研究基础上。有效结合住宅销售价格指数．通过逐步回归的方法获得购房适龄人口数量与住宅价格的关系模型,同时创新性地纳入莱宾斯坦人口发展五阶段理论,通过Logarithmic曲线模型进行量化分析。结论显示,在假定条件下．随着未来适龄购房人口的减少,国内住房价格将在2018年出现拐点并逐步回落,并在2030年前后降至2000年水平（剔除通胀因素）,之后将处于长期低迷状态。因此当前在遏制住房价格过快上涨的同时,应从更长远的视角构建调控思路。     

Evidence of Avoiding Working Capital Deficits in Australia

This study examines the incidence of managerial interventions in Australian firms to avoid reporting working capital deficits. We document a significant discontinuity in the distribution of current ratios at 1.0. We also find that the propensity of Australian firms to avoid working capital deficits is largely determined by the costs and benefits of management interventions. Firms with short‐term or long‐term debt are less likely to engage in accounts manipulation, while firms paying dividends are more likely to do so. Further examination of the components of current assets and current liabilities reveals that, to avoid working capital deficits, Australian firms tend to undertake actions to overstate accounts receivable rather than overstate inventory or understate current liabilities. The results provide practical guidance and implications for shareholders, auditors and regulators in identifying accounting irregularities.     

Cultural New Year Holidays and Stock Returns around the World

Using data from 11 major international markets that celebrate six cultural New Year holidays that do not occur on January 1, we find that stock markets tend to outperform in days surrounding a cultural New Year. After controlling for firm characteristics, an average stock earns 2.5% higher abnormal returns across all markets in the month of a cultural New Year relative to other months of the year. Further evidence suggests that positive holiday moods, in conjunction with cash infusions prior to a cultural New Year, produce elevated stock prices, particularly among those stocks most preferred and traded by individual investors.     

Bank Competition and Leverage Adjustments

We test whether bank competition affects firms’ leverage adjustment speeds. Using Chinese data where bank concentration varies across both years and provinces, we find that underlevered firms move to their target leverage faster when bank competition is high. Tests surrounding an exogenous shock to bank competition lead to the same conclusion. We also find that small firms and nonstate‐owned firms exhibit faster leverage adjustments when bank competition is high, which is consistent with the conjecture that bank risk taking increases with competition.