并发程序切片方法综述

随着实际应用对并发软件需求的不断增加,并发程序的应用越来越广,程序切片的研究不再仅仅局限于顺序程序,并发程序切片的研究也越来越多。但是由于并发程序执行的不确定性,并发程序切片的研究还有许多问题有待解决。文中介绍了当前主要的几种并发程序切片方法及其主要特性,并对这些切片方法进行了比较分析,结果表明并发程序切片的效率和精度都达到理想的目标是不可能的,只能是在两者之间的均衡,最后简要介绍了并发程序切片的应用。     

网络服务器技术研究与实现

应用服务器响应速度直接影响着计算机网络系统的性能。分析网络服务器工作模式,探讨网络服务器的实现技术,并比较了这些技术优缺点和适用范围,给出具体的网络服务器的实现技术和部分代码。     

基于UML的企业竞争情报系统设计

针对竞争情报系统的复杂性,采用统一建模语言(UML)对其综合集成研讨厅进行建模.其模型包括基于UML的需求分析、竞争情报综合集成研讨厅的类研究以及竞争情报综合集成研讨厅的流程分析.即将面向对象的分析和设计映射为面向对象的代码部件,利用UML的CASE工具完成模型自动生成部分源程序代码.并把该代码与组件形式封装,供系统开发使用.     

浅析220 kV线路跳闸故障及应对措施

随着经济的发展,城市配电网络以及山区高压电缆架设工程进展迅速。但是由于部分地区的自然灾害、人为事故频繁等原因,电力线路经常出现故障。比如雷电活动导致的跳闸现象。对此,本文作者通过对220kV某线雷击跳闸故障进行实例分析,寻找跳闸事故的原因。并结合多年工作经验对事故之后的改进措施提出了自己的看法。     

基于并行粒子群优化的三维点云配准算法

针对基于群智能优化的点云配准算法计算时间长的问题,提出一种基于CUDA的并行粒子群配准算法.以点对点距离最短为适应度函数,利用粒子群算法各粒子天然的并行性,将运算过程分配到GPU的各个线程中计算变换参数.由于GPU多个线程运算同时执行互不干扰,极大地提高了粒子群的运算速度,从而可以实现点云的快速、精确配准.实验结果表明,该算法既克服了ICP算法对点云初始位置要求高的缺点,又有效解决了基于群智能优化的点云配准算法计算时间长的问题.     

The objectives,architectures and effects of distance learning laboratories for industrial engineering education

The concept of laboratories for distance (e-learning) with remotely controlled laboratory set-ups or virtual laboratories with different simulations have an important role in industrial engineering education and training. Although the concept is not new, there are a number of open issues that should be solved. This paper will present the fundamental objectives of learning through distance learning laboratories as well as the special issues connected with these labs, including their effectiveness. Other important questions will be addressed such as pre requests for remote controlled/virtual labs according to different stakeholders, different architectures will be compared and, finally, evaluations and students' feedback will be presented.     

“自动控制系统工程设计”课程思政教学实践

学习不仅仅是自然科学知识的学习，更是社会科学、民族文化、正确人生观和价值观的形成过程，“课程思政”无疑正是实现该目标的捷径，它是当前高等院校思想政治教育的新模式。如何提升学生解决“复杂工程问题”的能力成为高校开展工程教育和“新工科”的难点和重点，而课程思政正是培养学生解决“复杂工程问题”中所需要的非技术因素的重要途径。“自动控制系统工程设计”是自动化专业高年级学生的一门专业课，当前关于“课程思政”的论述是指导思想居多、实施经验以及案例设计较少，针对该问题以“自动控制系统工程设计”为例，详细给出了“课程思政”教学案例的具体实施过程，对同类课程提供参考。     

From engineering diagrams to engineering models: Visual recognition and applications

We present a computational recognition approach to convert network-like, image-based engineering diagrams into engineering models with which computations of interests, such as CAD modeling, simulation, information retrieval and semantic-aware editing, are enabled. The proposed approach is designed to work on diagrams produced using computer-aided drawing tools or hand sketches, and does not rely on temporal information for recognition. Our approach leverages a Convolutional Neural Network (CNN) as a trainable engineering symbol recognizer. The CNN is capable of learning the visual features of the defined symbol categories from a few user-supplied prototypical diagrams and a set of synthetically generated training samples. When deployed, the trained CNN is applied either to the entire input diagram using a multi-scale sliding window or, where applicable, to each isolated pixel cluster obtained through Connected Component Analysis (CCA). Then the connectivity between the detected symbols are analyzed to obtain an attributed graph representing the engineering model conveyed by the diagram. We evaluate the performance of the approach with benchmark datasets and demonstrate its utility in different application scenarios, including the construction and simulation of control system or mechanical vibratory system models from hand-sketched or camera-captured images, content-based image retrieval for resonant circuits and sematic-aware image editing for floor plans.     

SiP协调设计和PI解析(6)

概述了SiP(系统封装)协调设计和PI解析:(1)协调工程(下);(2)电源供给电路;(3)SSD噪声;(4)旁路电容。     

Improving engineering design- contributions of cognitive ergonomics

Engineering design is analysed in terms of design problem-solving. Engineering designers of differing productivity hardly differ in mental abilities, especially their tested intelligence. However, they differ in their strategies concerning the analysis of requirements and of the problem, in their search for general principles solving the relevant problem, and in the procedures used for developing specific solutions. Experimental and interview results stress that the interrelationship of thinking and sketching, as well as other kinds of an early low-cost prototyping are of crucial importance for the efficiency of the problem-solving procedure and the result. Possibilities for assisting design problem-solving and to improve the training of designers are discussed.