计量检定规程《环形线圈车辆检测器》的编制研究

环形线圈车辆检测器的计数精度和测速精度关系到交通流量统计结果的准确性,是计量检定的关键项目.所以编制环形线圈车辆检测器的计量检定规程,规范计量检定的内容和方法,按照规程对其进行计量检定是十分必要的.     

长江下游东流水道近期航道演变及维护对策

东流水道为长江下游典型的多分汊顺直河段,汊道交替、变化复杂,时有碍航情况发生,是长江下游重点碍航水道,也是长江“黄金航道”尺度提升的瓶颈河段。尤其近些年,在经历了西港淤堵、航道调整以及二期整治工程实施后,东流水道演变出现了新变化与新趋势。结合东流水道最新实测资料,分析其演变特点及碍航特性,揭示汊道变化的影响因素,并建立二维水沙数学模型,预测未来东流水道的演变趋势。在此基础上,提出主要维护对策及措施,为同类水道的航道维护与整治提供参考。     

漳州南太武海滩泥化综合整治

南太武海滩前部水域浪小流弱,九龙江和近岸陆域排洪排污对海滩直接影响较大,造成严重的沙滩泥化和环境问题。面对复杂的外部边界条件,综合海岸动力学、生态学、环境学等多学科的方法,统筹城市排洪排污需求和景观生态需要,分析沙滩泥化的现状和机理,从技术、经济和生态方面论证了治理方案的可行性,并创新性探索减淤屏在整治海滩泥化工程设计中的应用。     

水平排水技术在长江中下游航道整治中的应用

在分析水平排水管对岸坡稳定作用的基础上,提出一种新的水平排水管结构。通过在斗湖堤水道江陵高滩守护工程中开展的复杂地质条件下水平排水管的试验,说明水平排水管可消除岸坡中地下水以及渗流现象的存在,从而减弱岸坡中地下水对岸坡的稳定危害。深层排水技术水平排水管首次在长江航道整治工程中运用,并取得了较好的工程效果,可为其它类似工程提供借鉴。     

A G/G(n)/C/C state‐dependent simulation model for metro station corridor width design

Metro station corridor and passengers are described as a G/G(n)/C/C state‐dependent queuing system with a general random arrival interval G and a general random and state‐dependent service time G(n) to offset the shortcomings in existing design methods. The corresponding G/G(n)/C/C state‐dependent discrete event simulation model is developed, and its high‐fidelity is tested. Then the optimization algorithm based on the simulation model is designed to determine corridor width. The proposed simulation optimization method and the existing analytical optimization methods, based on M/G(n)/C/C and D/D/1/C queuing models, are applied to design corridor width in a numerical example of 48 combinations of passenger flow rates and level of service (LOS). The designed corridor widths are tested in a micro‐simulation model, and the performance measure is compared. The result shows that the corridor widths obtained by the new method are 0.357 m (7.4%) larger than that of the other two methods on average; the area per passenger of the new method increases 10.53% and 11.63%, respectively, compared with that of the other two methods; the widths designed by the new method satisfy the requirement of LOS under various passenger flows, whereas 93% of the corridor widths obtained by the other two methods fail to meet the requirement of LOS, and the corridor widths designed by the new method have high elasticity coefficients of LOS‐width. Copyright © 2015 John Wiley & Sons, Ltd.     

基于TDM的出租车供需调控方案研究

交通需求管理（TDM）是能从根本上解决城市交通问题的策略,具有现实的意义。针对成都市出租车供需现状,运用系统的思想对各供需调控方案进行评价比选,分析交通需求管理的必要性并提出针对出租车的交通需求管理的具体措施,可为解决出租车的供需矛盾提供参考。     

变高度箱梁桥剪力滞效应的三结合分析法

应用初等梁弯曲理论公式与平面杆系有限元法以及有限条法程序相结合的方法,建立了分析变高度箱梁桥剪力滞效应的计算模型。从两个算例(连续梁桥和悬臂梁桥)的计算结果发现,应用本文模型算得的箱梁翼缘正应力沿横桥向的分布,与应用空间有限元法和有限条法算得的分布,吻合甚好。因此,本文方法具有实用价值,可供设计者选用。     

金沙江溪洛渡水利枢纽河段通航条件研究

通过对溪洛渡水库回水变动区河段和溪洛渡坝址至下游水富河段河道现状调查,在收集、分析现有资料的基础上,介绍河道滩险现状,并按规划的Ⅲ级航道标准,对该河段航道治理与资金投入情况进行了初步研究,为溪洛渡枢纽上下游通航问题的决策提供了有益的参考资料．     

天津港南疆港区围海方案研究

南疆港区陆域不足 ,已严重制约港口建设及功能开发。结合海河口整治及相关分析 ,提出南疆港区总体造陆规模及分期实施方案 ,并论证了泥土来源情况。     

EFFECT OF METHIONINE ENKEPHALIN ON MIGRATION OF MACROPHAGES FROM MICE WITH IMPAIRED LIVER

The increased plasma methionine enkephalin(M- Enk) concentration in patients with liver dis-eases indicates an alteration of the immune func-tion in these patients[1] .Since the effects of opioidpeptide on modulation of immune system in humanbeing and animals under normal condition havebeen revealed,more interest has recently been fo-cused on conditions in stress as liver impairment[2 ] .An attractive trend has emerged in the pastdecadethat in stress some neuropeptides may be secretedand relea…