厢式车多点连接结构的应力数值模拟分析

根据由经典层合板理论推出的夹芯复合板弯扭刚度公式和薄板理论中普通薄板的弯扭刚度公式，将夹芯复合板等效成一等厚度单层板，然后运用有限元分析方法，在动载条件下对车厢与底盘连接形式进行了结构应力数值模拟分析，提出了改进方案，并指出了设计中应注意的问题。     

Transformer Fault Analysis Based on Bayesian Networks and Importance Measures

Complex environment stresses bring many uncertainties to transformer fault. The Bayesian network(BN) can represent prior knowledge in the form of probability which makes it an effective tool to deal with the uncertain problems. This paper established a BN model for the transformer fault diagnosis with practical operation dataset and expert knowledge. Then importance measures are introduced to indentify the key attributes which affect the results of transformer diagnosis most. Moreover, a strategy was proposed to reduce the number of attribute in transformer fault detection and the resource cost was saved. At last, a diagnosis case of practical transformer was implemented to verify the effectiveness of this method.     

驾车春游应注意些啥

随着“五一“长假的到来,在阳光明媚的春天驾车旅游已成都市时尚.在尽情体味旅游乐趣的同时,笔者认为应注意以下事项:……     

松花江水系污染与防治

主要阐述了水污染的问题以及针对已经出现的谁污染采取的一些列的治理措施。并主要针对松花江水污染的情况以及松花江在我省内的特点,分析主要污染物的来源以采取相应的方案进行处理解决。这对保护松花江有这至关重要的意义。     

军用厢式车夹层结构设计研究

介绍了大板式结构厢式车辆的夹层结构，提出了车厢夹层结构的设计原则，并运用四边简支的矩形夹层平板模型推导出车厢夹层板应力计算公式，为优化夹层结构设计提供了理论依据。     

Maintenance decision making model with multiple attribute optimization

An effective maintenance schedule can largely improve productivity and reduce maintenance costs for enterprises. Many factors, such as resource, production, cost and crew, should be considered when we make maintenance plans. However, it is difficult to meet all requests of the production targets in practical engineering.The multiple attribute decision making for equipment maintenance is proposed in this paper, and the multiple objectives decision making method is utilized to solve the problem in the maintenance process. In the particular environment and resources, a case is studied to illustrate the model and methods. The model gives the optimal maintenance plan with the analytic hierarchy process method in accordance with the particular criteria. It has been proved that this model and decision methods are scientific and operable.     

TP53、P16及K-ras在胆囊高级别上皮内瘤变及早期癌中的表达及随机森林预测模型的建立

目的 探讨TP53、P16及K-ras在胆囊高级别上皮内瘤变及早期癌中的表达差异及建立基因突变随机森林预测模型.方法 回顾性分析2013年1月至2018年12月西安交通大学第一附属医院71例行胆囊切除术患者的临床病理资料,其中慢性胆囊炎20例、胆囊高级别上皮内瘤变28例、胆囊早期癌23例.采用免疫组化SP法对患者胆囊病...