普通SBR生物脱氮工艺的效果分析

通过对生产性普通SBR生化反应器的运行数据,结合有关废水处理原理,从有机负荷、混合液悬浮固体(MLSS)、DO的角度进行系统的分析与研究,考察其生物脱氮最佳工艺运行条件。     

基于大规模定制的供应链设计

分析了大规模定制面临的挑战和供应链发展带来的机遇，根据供应链的不同功能，结合大规模定制的特点，提出“运用三维并行工程”设计不同的供应链及其供应商与战略伙伴，以实现大规模定制的低成本和快速反应。     

三维软件在园林效果图制作中的应用

笔者根据自己多年的制作园林效果图的经验,从整体分析、建模、材质和贴图、布光到渲染输出、后期处理,详细论述了应用三维软件制作园林效果图的技巧和注意事项,值得从业人员借鉴应用。     

中国外贸进出口对税收的影响：理论与实证

对外贸易对中国的税收有怎样的影响?回答这一问题，对制定贸易政策有重要的现实意义。本文对1-2-3模型进行修正，将总产出区分为4种具有不同税收特征的产品，构建相应的税收模型，从理论上分析了对外贸易对税收有正面的影响。实际测算显示，一般贸易出口每增加1元人民币，会相应带动当年税收增加0．4～0．5元人民币。通过对季度数据的Granger因果检验和向量误差修正模型分析，本文发现出口增加对税收有持续的正面影响。     

我国移动商务现状与发展趋势

本文介绍了我国移动商务的发展,从最初的短信、移动支付、电子邮件与手机搜索引擎到现在的3G,阐述了信息化为3G发展提供了基础,为商务活动频繁提供了需求,移动运营商提供了努力使3G移动业务走向普及;最后分析了3G移动商务的设备制造、制式标准和业务发展方向的发展趋势。     

如何提高高职课堂教学效果--以“三维动画制作”课程为例

本文以“三维动画制作”课程为例,主要从课程内容设计、教学方法设计、教学理念转化、课堂互动等方面,探讨了高职院校教师如何提高课堂教学效果,以期为高职教学方法创新提供有益的借鉴。     

倾斜摄影测量中影响模型精度的因素分析

目前,倾斜摄影测量作为一种新技术,经过不断的探索、应用和发展,已开始在测绘行业中大显身手,并取得了不小的成绩。通过三维模型进行的矢量数据采集,其矢量精度完全依赖于三维模型精度。论文以实践经验为基础,定性地分析了在航空摄影、像控测量、模型生产三阶段中,影响模型精度的因素,希望对三维模型的生产起到一定的指导作用。     

Venture Capital and Other Private Equity: a Survey

We review the theory and evidence on venture capital (VC) and other private equity: why professional private equity exists, what private equity managers do with their portfolio companies, what returns they earn, who earns more and why, what determines the design of contracts signed between (i) private equity managers and their portfolio companies and (ii) private equity managers and their investors (limited partners), and how/whether these contractual designs affect outcomes. Findings highlight the importance of private ownership, and information asymmetry and illiquidity associated with it, as a key explanatory factor of what makes private equity different from other asset classes.     

It Takes Two: The Incidence and Effectiveness of Co‐CEOs

This study examines the phenomenon of co‐CEOs within publicly traded firms. Although shared executive leadership is not widespread, it occurs within some very prominent firms. We find that co‐CEOs generally complement each other in terms of educational background or executive responsibilities. Our results show that firms most likely to appoint co‐CEOs have lower leverage, a more limited firm focus, less independent board structure, fewer advising directors, lower institutional ownership, and greater levels of merger activity. The governance structure of co‐CEO firms suggests that co‐CEOships can serve as an alternative governance mechanism, with co‐CEO mutual monitoring substituting for board or external monitoring and co‐CEO complementary skills substituting for board advising. An event study indicates that the market reacts positively to appointments of co‐CEOs while a propensity score analysis shows that the presence of co‐CEOs increases firm valuation.