高速公路运输选择与需求预测的效用理论模型

为了把握高速公路的运输需求,引入效用理论对高速公路的运输需求预测进行了探索。在阐述效用理论的基础上,通过分析运输次数、发生时间等效用影响因素,引入速度、时间等路线服务水平和社会经济属性向量作为模型参数,构建了高速公路运输服务需求函数,进而建立高速公路运输需求预测模型。研究表明:通过改进效用函数,引入新的效用参数,能客观地描述高速公路运输选择行为,为高速公路运输需求预测提供借鉴。     

深圳市后海填海区排洪系统探讨

通过对深圳市后海填海区现状排洪系统不利影响的分析,提出新排洪系统的建立及方案,并对现状(规划)当中的内涝、溢流及人工河提出适当的解决办法。     

股票期权对经理人激励效应及其问题研究

本结合企业外部经济环境变化，探讨股票期权对经理人的激励效应及其问题。论首先从股票期权是对经理人的一种长期激励报酬角度，分析了股票期权对经理人的激励效应；然后，深入分析了股票期权对经理人激励中存在的几个主要问题；最后，针对这些问题，论联系我国实际，研究并提出了问题解决的思路。     

Assessment of investment decision in the dry bulk shipping market based on real options thinking and the shipping cycle perspective

As the dry bulk shipping market seems to have been stuck in a trough period for a long time, investors need to pay more attention to their investment strategies to survive during this period. This study aimed to find a suitable model to assess dry bulk ship investment decisions in the tough and peak periods based on real options theories. Two options, involving an abandonment option and a deferrable option, were used to define investors’ responses to the uncertainty in investment processes such as stopping or selling vessels. The option valuation was solved by using a binomial valuation model, due to data limitations. In accordance with shipping cycle theories, different volatility parameters for the tough and peak periods were calculated using a generalized autoregressive conditional heteroskedasticity (GARCH) model. The application of the real options model to a case study involving secondhand ship trading indicated its viability. According to the results of the case study, the new model has advantages over the traditional net present value (NPV) method in uncertain investment environments. Thus, the results demonstrate that the real options model is a more suitable method for use in the current dry bulk shipping market.     

尼日利亚Bullnose 码头改造项目投标方案优化

依据原有方案和实际情况,通过合理优化增强投标竞争力,是中国工程企业参与国际招标项目时需要面对的一个难题。本文从平面布置、工艺配套和水工结构3个方面,对Bullnose码头改造方案优化进行介绍,分析投标方案优化工作要点,为工程技术人员提供参考。