基于状态的维修在导弹保障中的有效性分析

导弹维修保障系统是一个复杂的非线性系统,采用系统动力学仿真的方法能够清晰地表达出系统要素之间的相互关系,可以有效地对此类复杂维修保障系统的保障行为特征进行（动态的）仿真。论文通过分析导弹维修保障系统各要素之间的相互关系,建立了其保障行为特征的动力学模型,并通过实例验证了基于状态的维修在提高导弹维修保障的有效性方面具有明显的优势。     

钢筋混凝土桥梁柱直接基于位移的抗震设计方法研究

该文简要回顾了基于性能,位移抗震设计理论的引入和发展现状,分析了各种抗震设计方法的优缺点,之后系统概括出直接基于位移抗震设计的理论框架;比较分析了两种基于位移的设计方法：割线剐度法和非线性位移谱法。在此基于非线性位移反应谱法的基础上,提出了一种无需迭代直接基于位移的设计方法,并给出具体的设计步骤,并以实例验证了方法的可行性。     

Surrogate‐based optimization of cordon toll levels in congested traffic networks

The benefit, in terms of social surplus, from introducing congestion charging schemes in urban networks is depending on the design of the charging scheme. The literature on optimal design of congestion pricing schemes is to a large extent based on static traffic assignment, which is known for its deficiency in correctly predict travel times in networks with severe congestion. Dynamic traffic assignment can better predict travel times in a road network, but are more computational expensive. Thus, previously developed methods for the static case cannot be applied straightforward. Surrogate‐based optimization is commonly used for optimization problems with expensive‐to‐evaluate objective functions. In this paper, we evaluate the performance of a surrogate‐based optimization method, when the number of pricing schemes, which we can afford to evaluate (because of the computational time), are limited to between 20 and 40. A static traffic assignment model of Stockholm is used for evaluating a large number of different configurations of the surrogate‐based optimization method. Final evaluation is performed with the dynamic traffic assignment tool VisumDUE, coupled with the demand model Regent, for a Stockholm network including 1240 demand zones and 17 000 links. Our results show that the surrogate‐based optimization method can indeed be used for designing a congestion charging scheme, which return a high social surplus. Copyright © 2016 John Wiley & Sons, Ltd.     

关于岸边集装箱起重机节能降耗的探讨

对岸桥吊运集装箱时用电情况进行了分析,从5个方面提出了节能降耗的措施。即:最大限度利用反馈电,使用新技术,消除高次波,精确计算容量和精确控制辅助用电,可以作为借鉴。     

高职示范校建设中公共基础课的教学改革与实践——以计算机基础课为例

结合高职示范校建设,总结了计算机基础教学改革的经验,提出了今后发展的方向。     

A Stable Switch Method Based on Fusion in Uncalibrated Visual Servoing

Stable switch control between multiple cameras for uncalibrated visual servoing was studied. Switch images based on fusion were presented to get the continuous dynamic image Jacobian matrix among robots and distributed visual sensors. The designed fusion algorithm is suitable to have dynamically adjustable fusion weights, and the fusion structure was analyzed. Simulations and experiments without any knowledge of mobile robots and uncalibrated visual sensors show that the method has higher adaptability than the traditional instant switch control method. The method can enhance the system stability at the switching process.     

基于知识工程的船舶救生系统布置设计

目前舾装设计知识缺乏整理和归纳,这些设计知识及相关专家经验的重复利用和共享性较差,影响设计效率.针对这些问题,基于知识工程理论和计算机编程技术,以船舶救生系统的布置设计为例,分析舾装设计知识所适用的表示方法和推理框架,介绍具体的知识表示、知识分析和知识推理的方法,完成船舶舾装布置设计顾问程序编制,对船舶舾装其他系统设计...     

基于海事案例推理的决策支持系统的设计和实现

文章提出将基于案例推理的方法应用到海事案例决策支持系统中。首先介绍案例推理的方法,介绍海事案例决策系统中的组织结构、案例表示、海事案例库的检索等,阐述海事案例决策支持系统的设计和实现。     

基于边界分析的重载轮胎滚动过程接地角和印记非对称性分析与验证

基于解析弹性基础的柔性胎体模型,并考虑胎体圆环的径向变形与切向变形之间的耦合关系,为重载大扁平比轮胎建立了柔性环二维轮胎低频动力学模型。采用接地边界求解方法探究了轮胎的接地滚动过程中的接地角和接地印记的非对称特性,并进行了轮胎接地刚度和接地印记非线性实验验证。结果表明:采用接地边界求解可准确计算接地角和接地印记;基于胎内应变传感器的接地印记估计方法可间接测量轮胎滚动过程中的接地印记。