新老内河通航标准学习体会

通过对新老内河通航标准的学习,分析新标准在老标准的基础上增加和调整的内容,并提出几点建议。     

浅谈沥青混合料配合比设计四个阶段

介绍了沥青混凝土配合比设计的四个阶段及各阶段的主要技术要点,供同行参考。     

期股与实股对经理人动态激励问题的探讨

期股计划对经理人进行长期激励是国外企业的一种普遍做法。为了更好地防止经理人追求短期利益 ,本文介绍了一种新方法 ,期股与实股对经理人的动态激励。     

运用法律保护房产所有权者的合法权益

通过对某高校房地产权属纠纷案例的剖析，阐述了如何正确运用法律，保护所有权的合法权益的重要性与必要性。该案件错综复杂，涉及行政复议、行政诉讼和民事诉讼等多种法律形式，着重强调了诉讼证据和诉讼时效在案件审理中所起的决定性作用，两既相互独立，又互为作用。     

沿河公路路基防护型式及工程应用

总结目前工程中常采用的各种防护工程型式 ,提出了山区不同类型河段 ,采用各种防护工程配合的推荐型式 ,为工程设计人员提供参考依据 .     

Tangential force variation due to the bogie direction reversal procedure

A range of tangential forces is generated within the contact patch when a wheelset moves on the rail. These forces are intensified when incorporating curved tracks and motored axle rail vehicles [Arrus, P., de Pater, A.D. and Meyers, P., 2002, The stationary motion of a one-axle vehicle along a circular curve with real rail and wheel profiles. Vehicle System Dynamics, 37(1), 29–58]. The wheelset is subject to flange contact if an unbalanced force remains in a curve towards the high rail gauge face. The resultant force in the transverse direction includes the lateral force, the radial force, and the creep forces in addition to the effect of the frequent wheelset displacement due to the kinematic oscillation [Iwnicki, S., 2003, Simulation of wheel–rail contact forces. Fatigue Fracture Engineering Material Structure, 26, 887–900]. This article has focused on a potential variation in some of the forces cited when the wheelset is subject to backward and forward movements. A severe wear rate observed within the wheel flange region in Iranian Railways was investigated by operating a test bogie on a curvaceous track. An obvious improvement in the wear rate and wear pattern of the wheels was attained when the second test bogie encountered a bogie direction reversal procedure. This enhancement is considered in this article from the force analysis standpoint.     

新型环保船舶涂料技术

文章介绍水性船舶涂料的研制背景，指出传统油漆对修造船行业及社会整体发展的不利影响，提出新型水性船舶涂料环保节能、安全健康，施工便利等优点，以及纳米技术的应用，开创了船舶涂装技术的新纪元。     

Alcohol and traffic accidents in Japan

Alcohol induces many traffic accidents. Recently, the number of incidences of driving under the influence of alcohol (DUIA) has decreased in Japan; however, the number of drink-driving situations remains constant. Toughening the penalty has not been a particularly effective method for reducing the number of DUIAs. To reduce accidents resulting from DUIA, an approach other than sanctions may be necessary. Alcohol impairs attentional control for simple tasks and increases the propensity for risk-taking behavior; these are the major perils of DUIA. There are many risk factors for DUIA, including area, time, personal traits, the use of other substances, and alcohol use disorder. Each individual has a different risk factor for drink-driving, so it is important to provide more education for individuals and interventions for alcohol usage according to each risk factor.     

桥梁上部结构防船撞研究

船舶撞击桥梁上部结构是船撞桥事故模式之一,其撞击特性与撞击桥墩特性相比有所不同。现着重研究了船舶撞击桥梁上部结构的风险分析、撞击力、防撞保护等技术问题,并提出设置警示设施、AIS系统建设、拦截、红外线监测、警戒等防护措施,供通航安全部门参考。     

温度对旋转钻进破岩功耗的影响研究

岩石在常温、常压下的变形破坏理论已非常成熟，但随着钻探深度不断的增加，岩石将要面临高地温、高围压的环境，这些因素将直接影响钻进过程。通过研究旋转钻进过程中能量的传递转移，建立岩石破碎的简化模型，利用单位体积破岩能耗来探究温度对钻进过程的影响。研究结果表明:随着钻进深度的增加，在一定的围压作用下，温度升高而岩石的弹性模量却逐渐减小，压入深度随温度升高呈抛物线形上升，破岩功耗随温度呈曲线上升，并在经过阀值温度400℃后趋于平缓。