新会计准则对现有企业会计核算的影响

财政部于2006年2月发布通知,宣布从2007年1月1日起开始执行新的企业会计准则。对于现有企业的核算体系,新会计准则主要有三方面的变化,对企业的资产减值、可操纵的利润空间、债务重组方法方面产生影响,本文对此进行了深入的研究。     

Delay Restoration of Single-Track Railway Rescheduling

On the basis of analysis of the principle of delay restoration in a disturbed schedule, a heuristic algorithm for rescheduling trains is developed by restoring the total delay of the disturbed schedule. A discrete event topologic model is derived from the original undisturbed train diagram and a back propagation analysis method is used to label the maximum buffer time of each point in the model. In order to analyze the principle of delay restoration, the concept of critical delay is developed from the labeled maximum buffer time. The critical delay is the critical point of successful delay restoration. All the disturbed trains are classified into the strong-delayed trains and the weak-delayed trains by the criterion of the critical delay. Only the latter, in which actual delay is less than its critical delay, can be adjusted to a normal running state during time horizon considered. The heuristic algorithm is used to restore all the disturbed trains according to their critical details. The cores of the algorithm are the iterative repair technique and two repair methods for the two kinds of trains. The algorithm searches iteratively the space of possible conflicts caused by disturbed trains using an earfiest-delay-first heuristics and always attempts to repair the earliest constraint violation. The algorithm adjusts the weak-delayed trains directly back to the normal running state using the buffer time of the original train diagram. For the strong-delayed trains,the algorithm uses an utility function with some weighted attributes to determine the dynamic priority of the trains, and resolves the conflict according to the calculated dynamic priority. In the end, the experimental results show that the algorithm produces ＂good enough＂ schedules effectively and efficiently in disturbed situations.     

城市轨道交通线网方案的综合评价

根据城市轨道交通线网规划方案综合评价的特点，建立了综合评价指标体系，并结合以往的实践经验，介绍了FHW综合评价方法以此领域应用的优点及评价过程。     

一见钟情“307”

我头一次买车，目标方向明确。有一天心仪的车“撞”进了我的眼睛，就是它了！[编者按]     

列车优化操纵速度模式曲线生成的智能计算研究

讨论了在起伏坡道线路上运行的列车节能操纵的优化计算问题，给出了一种局部优化与全局优化相配合的计算结构，用以生成列车优化操纵的速度模式曲线。以仿真计算获得局部优化规律，用神经网络实现局部优化规律的数据组织，应用遗传算法进行全局优化计算，获得了令人满意的结果。     

应用自动变速器时应考虑的几个问题

使用自动变速器进行整车设计时，应考虑车速里程表的国家强制检测要求，以及如何通过线路设计来保证自动变速器的可靠工作。     

现代物流协调电子商务发展的研究策略

电子商务在推动企业物流运营模式变革的同时,也在深刻地影响现代物流企业的发展,电子商务未来的发展也与物流管理模式密切相关。本文针对目前制约电子商务发展的物流方面的问题,提出了一些发展现代物流的措施。     

果胶超滤纯化过程传质模型和动力学分析

研究了果胶提取液超滤膜分离处理过程传质特征,建立了渗透通量、膜面浓度与压差的传质模型,并对膜阻力和浓差极化阻力进行了定量描述;同时对超滤过程的动力学进行了分析.