新型冷轧(拔)无缝钢管高分子润滑工艺研究

提出了冷轧(拔)无缝钢管高分子润滑工艺。研究了该工艺的PL膜各种特性。介绍了工业实验情况。实验证明,高分子润滑工艺完全满足冷轧(拔)钢管工艺要求,并具有操作简便、环境污染小等优点,完全可以代替传统的磷化-皂化润滑工艺。     

基于关键字的单协议分类

网络协议是网络通信中一系列标准的集合,未知协议的识别和分析对网络监管、保障网络安全具有重大意义。协议识别技术多种多样,但大都不适用于二进制的协议识别。在此针对现有的协议识别技术的局限性,提出了一种在双方单协议通信环境下的多种类型二进制数据帧的协议识别方法。该方法首先利用n-gram技术对数据帧进行分割,然后利用无监督的特征选择算法提取特征串集合,从而利用聚类算法实现协议消息的识别。最后在ICMP上对该方法进行评估,消息识别的准确率和召回率均可达到90%以上。     

On a novel press system with six links for precision deep drawing

The objective of this paper is to propose a novel press system with six links for precision deep drawing, and verify its feasibility. First, the system is presented and its advantages are discussed. Then, the kinematic analysis of the system is obtained by examining the geometry of the design. Moreover, kinematic dimensions of the variable coupling are found by using optimization method. Furthermore, the proposed approach is illustrated by a design example, its solid model for the proposed design is established, and then kinematic simulation is performed by ADAMS software. Finally, a prototype and an experimental setup are established, and the experiment is conducted. The results show that the proposed new mechanism is feasible and of reasonable accuracy. In addition, it has the advantages of easy manufacture, lower cost, higher precision, and easy adjustability.     

Hypermedia Support for Software Development: A Retrospective Assessment

Hypermedia technologies have been available for about a decade. Beginning with Douglas Engelbart, researchers have become interested in applying hypermedia concepts and technologies to software development. This paper assesses this symbiosis between hypermedia and software development as described by research contributions; by our count, more than one hundred articles. To date, no collection of, or guide to, this literature has been published. A number of significant contributions are classified, described, and appraised — providing a guide into what has been a rich but perhaps under-reported research area. Hypermedia has made significant contributions to software development in three primary areas: coping with massive amounts of information associated with software development projects; establishing and maintaining linkages between various types of software engineering documents; and enabling development engineers to record, document, and preserve knowledge about development thoughts, processes and rationale. These contributions may help direct the focus of future research towards building on, combining and assessing the resulting contributions. A research agenda is proposed along these lines.     

DrawBot: a bio-inspired robotic portraitist

Abstract

We are developing the control architecture of a portraitist artificial agent called DrawBot that reproduces the visuomotor behaviour of a human carrying out a realistic portrait. The visuomotor strategy adopted by DrawBot is based on computational models of eye movements in human beings,and one xperimental findings on eye-hand coordination in expert draughtsmen. In this paper we present a behavioural model of the visuomotor coordination adopted by a draughtsman, designed in terms of visual routines.Eventually we outline the implementation of the basic routines.     

餐厅网络运营服务系统

本文介绍了××餐饮管理服务有限公司酒店对网络运营管理服务信息系统的开发过程,包括软件工程的需求分析、系统功能结构设计、数据库设计以及调试在内的所有开发过程。本文中所论述的网络运营管理服务信息系统是一个将业务处理从纯人工操作转换成人工与计算机共同处理的一个实例,并对转换过程进行了详细策划,可作为同类计算机网络运营管理服务信息系统的应用参考。     

《软件工程》实验课程改革与实践

《软件工程》课程涵盖了软件开发的全过程,为将计算机专业的学生培养成高层次的IT人才,提供了理论依据和借鉴,实验课在《软件工程》课程体系中所占的位置尤为重要。通过分析《软件工程》实验课程的重要作用,详细阐述实验课程设计的方法和实施过程,说明《软件工程》实验改革具有重大意义。     

高职Photoshop平面设计课程的实践性

探索职业教育教学方式改革,深入校企合作,真正做到“产学研”与“工学交替”相结合的方式,改变目前职业教育面临的不足,强调Photoshop平面设计课程实践性,大力提升学生的实战能力,满足企业对人才的需求。     

《飞行工程力学》多媒体教学与实践

<飞行工程力学>课程要在突出专业特色方面有所突破和创新,教学内容要与部队、航理、装备密切结合.为此,在教学中利用课件将隐蔽、复杂的航空飞机结构材料转变成为直观、生动、形象的音、视频多媒体材料.