CONFIGURING BOTH BACKBONE AND LOGICAL NETWORKS OF A RECONFIGURABLE NETWORK WITH LINK FAILURES ALLOWED

This paper considers a problem of configuring both backbone and logical networks in a reconfigurable circuit-switched network where links are subject to failures. The objective is to design feasible backbone and logical networks at least cost where the cost includes backbone link capacity expansion cost, lost-call traffic penalty, and hop cost (nodal processing cost). The problem is formulated as a zero-one non-linear mixed integer programming problem, for which a solution procedure is developed by use of a Lagrangean relaxation technique and heuristic methods exploited for improving the lower and upper bounds of any intermediate solution. The solution procedure is tested for its effectiveness with various numerical examples.     

组态软件直接地址变量重叠检查的设计与实现

工业组态软件(DCS、PLC)中涉及到大量的直接地址变量应用,这些变量是由用户定义到指定的地址,正是这种灵活的定义变量方式可能导致多个变量在内存中共用一块内存。以上现象有的属于用户需要操作内存的值而定义到指定的内存,有的情况是用户无意中定义的。通过研究分析这些直接地址变量在内存中分配的特点,探寻一种算法结构,在允许的时间和空间上查找到重叠的变量并通知用户。     

An interactive genetic algorithm with the interval arithmetic based on hesitation and its application to achieve customer collaborative product configuration design

Complex product configuration design requires rapid and accurate response to customers’ demand. The participation of customers in product design will be a very effective solution to achieve this. The traditional interactive genetic algorithm (IGA) can solve the above problem to some extent by a computer-aided user interface. However, it is difficult to adopt an accurate number to express an individual's fitness because the customers’ cognition of evolutionary population is uncertain, and to solve the users’ fatigue problem in IGA. Thus, an interactive genetic algorithm with interval individual fitness based on hesitancy (IGA-HIIF) is proposed in this paper. In IGA-HIIF, the interval number derived from users’ evaluation time is adopted to express an individual's fitness, and the evolutionary individuals are compared according to the interval probability dominant strategy proposed in this paper. Then, the genetic operations are applied to generate offspring population and the evolutionary process doesn’t stop until it meets the termination conditions of the evolution or user manually terminates the evolution process. The IGA-HIIF is applied into the design system of the car console configuration, and compared to the other two kinds of IGA. The extensive experiment results are provided to demonstrate that our proposed algorithm is correct and efficient.     

窄间隙埋弧焊成套设备配置方案研究

对窄间隙埋弧焊成套设备的组成及工作原理进行分析、论证,确定最佳配置方案,在保证设备使用性能前提下,降低企业成本。     

基于PLC的自动化立体仓库实验系统的研制

自动化立体仓库是一种典型的机电一体化设备,对于机电一体化专业学生理解和掌握机电一体化系统设计及维护有着极大的帮助.介绍了基于PLC的自动化立体仓库实验系统的研制,该系统由机械本体、电气系统、PLC控制系统以及组态监控系统构成.装置研发成功后,已经在课程教学、实训以及毕业设计等环节得到了应用,取得了预期的效果.     

解读“高分子构型”概念的内涵

通过对＂原子构型＂和＂分子构型＂分开进行定义,揭示出＂构型＂是一个用来描述＂分子中的那些原子与各自的取代基之间不可变空间关系总和＂的抽象概念,并不实指一个分子的特定的空间结构形式。在此基础上给出了＂高分子构型＂的定义,并以聚丙烯（PP）分子为例介绍了研究高分子构型异构的方法,对高分子构型的纸上表示法进行了详细说明。     

平缝机的组态设计方法研究

为了提高平缝机产品的设计效率和质量,提出了一种组态式产品设计方法,并给出了基于组态技术的产品开发流程,分析了组件化设计的方法.在应用层次分析法和模糊综合评判算法的基础上,对组件的确定过程进行了详细阐述,并通过生成性规则和修改性规则两种准则来完成组件的设计.最后,应用该组态设计方法对平缝机进行产品设计开发,验证了该方法的...     

民间美术造型在地域性商业宣传中的符号构置探析

以民间美术造型在地域商业宣传中的符号构置为主要探讨对象,通过对其价值释义、符号践行以及表述价值的动态转化分析,结合辽宁地域入选国家非物质文化遗产名录的"医巫闾山"满族剪纸为实例解读,阐述这种有意味符号构置形态所呈现出的地域性人文风貌,提出了地域性民间美术造型研究的意义和审美向度,以及这种良性基因潜移在地域性广告创意构思过程中的合理性。     

汽车板连续退火机组工艺布置与设备配置探讨

介绍了带钢连续退火机组的发展概况和普冷汽车板连退机组的特点,并在此基础上探讨了汽车板连续退火机组的工艺布置和设备配置,确保在实际生产中机组生产出优良的并满足下游工序要求的产品。     

高炉用耐火材料的发展概况

介绍了国内外高炉大型化的建设状况,分析了影响高炉寿命的关键部位及对耐材的要求和合理配置,重点介绍了高炉用耐火材料的研究发展状况和取得的成就。