JK00430型机车走行部车载检测装置在内燃机车上的运用分析

介绍了JK00430型机车走行部车载检测装置的运用,提出了该装置发生报警后的科学处理办法。     

支持向量机在地铁车站深基坑围护结构变形预测的应用

利用支持向量机理论对深基坑支护结构的变形量进行分析和预测,建立了预测支护结构最大变形量的支持向量机预测模型。预测结果表明,该预测模型有很高的预测精度,并应用于南京市某地铁站实际工程。     

基于固结度等效的软土地基沉降预测方法探讨

通过对常用软土地基沉降计算方法的分析,并基于固结度等效的原则推导出了计算地基最终沉降的计算公式,给出了某一时刻地基剩余沉降与沉降速率的关系。该法概念明确、参数确定容易,避免了传统沉降预测方法中确定参数时受人为因素影响大的缺点,该方法有一定的参考价值。     

Mixed analysis of shell and solid elements using the overlaying mesh method

 This article presents a mixed method of analyzing shell elements and solid elements using the overlaying mesh method. In the structural design of a ship's hull, the shell elements are used for the global model. However, the solid elements are necessary to analyze the stress concentration zones or the vicinity of a crack. In such cases, the models are analyzed using zooming analysis, in which the results of a global model analysis are transferred to a local model analysis by imposing boundary conditions. This method is more advantageous than zooming analysis in terms of the accuracy of the solution and the modeling flexibility. Some examples of a plate model with a cracked surface or with a projection are shown in order to demonstrate the effectiveness of the method. Received: August 6, 2002 / Accepted: November 25, 2002 Address correspondence to: S. Nakasumi (sumi@nasl.t.u-tokyo.ac.jp) Updated from the Japanese original, which won the 2002 SNAJ prize (J Soc Nav Archit Jpn 2001;189:219–224; and 190:655–662)     

Development of Green-Naghdi models with a wave-absorbing beach for nonlinear, irregular wave propagation

Two-dimensional and three-dimensional Green-Naghdi (GN) models equipped with a numerical wave-absorbing beach have been developed to simulate nonlinear, regular, and irregular wave propagation. The numerical beach is introduced near the downstream boundary to absorb outgoing waves. An appropriate amount of numerical damping and an appropriate length of numerical beach are investigated using numerical experiments. The results show that the GN models with a numerical beach work very well in simulating wave propagation in water in a small computational domain.     

APPLICATION OF HMB－45 MONOCLONAL ANTIBODY AND S100 PROTEIN IN THE IMMUNOHISTOCHEMICAL DIAGNOSIS OF MELANOMA

ＡＰＰＬＩＣＡＴＩＯＮＯＦＨＭＢ－４５ＭＯＮＯＣＬＯＮＡＬＡＮＴＩＢＯＤＹＡＮＤＳ１００ＰＲＯＴＥＩＮＩＮＴＨＥＩＭＭＵＮＯＨＩＳＴＯＣＨＥＭＩＣＡＬＤＩＡＧＮＯＳＩＳＯＦＭＥＬＡＮＯＭＡＬｉｕＤａｎｙａ（刘丹亚）；ＳｕＢａｏｓｈａｎ（苏宝山）；Ｘｕ...     

合成脂肪酸废水的厌氧处理

对合成脂肪酸废水首先采用氧化钙处理，使其浓度降低到３０００ｍｇ／Ｌ以下，再采用中温厌氧生物处理。在平均水力停留时间为５天时，废水的ＣＯＤＣｒ去除率达７９．１％，沼气产率为０．４１ＮＭ３／ｋｇＣｏＤＣｒ试验还发现，的存在失使厌氧发酵的ｐＨ值上升。     

三菱FV系列车离合器系统修复后的排气作业

在维修FV系列车过程中，离合器控制油路拆卸、修理、安装后，要对离合器系统进行注油和排气作业，即从离合器助力器排气螺栓排出空气。该车的排气作业不仅仅需要很多工时，而且严重影响修理效率。在详细分析该车型离合器系统的结构和工作原理的基础上，提出了一种高效的排气作业方法。     

Dynamic Simulation of a Smart Crank and Slider Mechanism

In this paper, a smart crank and slider mechanism is analyzed mostly from a dynamic view. By means of dynamic explicit finite element method, 3D nonlinear structure is simulated. It is proved that the mechanism can effectively accomplish smart movement prescribed. And in order to ensure reciprocal movement with higher frequency, measures should be taken to avoid over heating of parts. Compared with internal energy, kinetic energy of total rigid body is dominating, and Y direction equivalent rigid velocity is much higher than X direction velocity. Equivalent rigid velocity of all parts is consistent with respective movement condition. For both energy and velocity, slider effect is dominating. Three direction equivalent inertia force oscillates. Force amplitude in Y -direction is comparitively the greatest.     

Maritime accident investigation and temporal determinants of maritime accidents: A case study

This paper presents the results of an investigation into temporal determinants of maritime accidents based on a data-set obtained from the proceedings of formal inquiries in the former German Democratic Republic (GDR). The results show that there is no statistically significant outcome between the probability for an accident and the time of watch. Thus the results do not confirm previous studies, which reported significant time of day effects.The outcome of this study indicates that marine inquiries can provide useful data for an analysis of underlying causes of maritime accidents. It is suggested that accident inquiries should be extended into the area of watch systems employed and should record the hours of work and of rest of the officers on the watch involved in a maritime accident.