Using integrated quality function deployment and theory of innovation problem solving approach for ergonomic product design

A multidisciplinary approach integrating method of identification of customer satisfaction needs (CSNs), the House of Quality (HoQ) chart of quality function deployment (QFD), theory of innovation problem solving (TRIZ) and fuzzy group decision-making theory for ergonomic product innovative design and evaluation in the early design stages was proposed. An integrated model and the approach procedures consists of four steps. In step 1, identification of CSNs is based on a data source triangulation approach, questionnaire survey, 5-point liner numeric rating scale, factor analysis, and Cronbach’s coefficient alpha statistic are utilized to guarantee that the CSNs are complete and reliable. In step 2, a correlation matrix is built to identify the critical ergonomic design areas and the key problems are established by analysis of the negative relationships obtained from interrelationship half-matrix at the roof of the HoQ. In step 3, to solve the problems, TRIZ main tools and contradiction analysis are utilized. Several innovative alternatives are generated by combining appropriate Inventive Principles of TRIZ, the critical ergonomic design areas and the ergonomic design principles. In step 4, a general and easy fuzzy group decision-making method for evaluating of the best design alternatives is presented. A case study of the integrated kitchen stove innovative design and evaluation is conducted to demonstrate the applicability of the proposed approach.     

BBU基带池集中设置的探讨和建议

针对底层网络的特点，分析BBU＋RRU站点集中化建设的优缺点，给出了集中化建设“分片、选点、保障”的新思路，并总结了BBU集中化建设的工程经验，提出了建设建议。     

Deployment strategy for static chargers in WRSN

The traditional deployment strategy of static chargers in wireless rechargeable sensor networks (WRSN) covers all the area.The basic idea is to cover all the positions of nodes.A mathematical model of distance between a charger and the farthest node was established,the relationship between the number of nodes and the mathematical expectation of minimum radius of charging was analyzed,and deployment strategy for static chargers was proposed.The method based on the locations of all nodes that need to be charged in the area,used the smallest enclosing circle (SEC) algorithm and finds the optimal location of the charger through Euclidean delivery boy algorithm.It will decrease charging radius,reduce the minimum required transmitted power,thereby saving the average charging energy consumption.The experimental results demonstrated that the less the number locations that the nodes existed,the more energy will be saved.     

Storage yard management based on flexible yard template in container terminal

With the bottleneck of port operation moving from the quay side to the yard area, storage yard management is becoming increasingly important in the container terminal. This paper studies on storage yard management in container terminal, a flexible yard template strategy is proposed instead of the fixed yard template strategy. Based on the strategy, an integrated optimization model simultaneously considering space allocation and yard crane deployment for the tactical storage yard management is formulated. Besides, Numerical experiments are conduced to verify the effectiveness of the proposed strategy and mathematical model.     

EPC分组核心网引入组网分析

简要阐述了EPC分组核心网的引入需求,比较了EPC与2G/3G分组核心网的差异,重点对EPC分组核心网的各种组网方案、EPC核心网元的设置和建设方式等关键问题进行了详细分析并给出了相应的结论,最后给出了EPC分组核心网的演进建议.     

剪刀式桥梁展桥机构铰点位置多目标优化设计

阐述一种新型剪刀式桥梁展桥机构的工作原理。针对方案样机在架设初始状态时展桥机构驱动油缸小腔受力过大、引起间断液压油溢流问题,利用Denavit-Hatenberg齐次变换矩阵建立展桥机构的运动学和静力学模型。根据展桥机构驱动油缸闭锁力与驱动力不同的特点,提出确定剪刀式桥梁展桥机构关键铰点位置的多目标优化计算方法。对剪刀式桥梁方案样机展桥机构的关键铰点位置进行优化设计,利用机械系统动力学分析ADAMS软件进一步验证了优化计算模型。研究结果表明：优化后展桥油缸的最大拉力降幅达59.5%,展桥油缸的受力分布趋于合理;所提出的展桥机构计算模型正确;优化方法具有收敛速度快、稳定性好等特点;展桥机构优化计算结果为方案样机改进提供了依据。     

模糊QFD模型在制冷压缩机设计中的应用研究

文章以制冷压缩机为研究对象,采用模糊评价方法对顾客信息和产品技术特性数据进行处理,在质量机能展开(QFD)模型的质量屋中确定指标权重及其相互关系,建立了模糊QFD的模型,并举例说明了该模型的应用.目前阶段得出的结果表明模糊QFD模型在制冷压缩机设计过程中为确定顾客需求和技术特性之间的关系起到了一定的辅助和参考作用,并为企业在进行其它类似设计中提供一定的方法.     

海上编队雷达网空间优化部署方法

在分析海上编队雷达网作战效能的基础上,建立了海上编队雷达网空间优化部署模型.海上编队雷达网在有/无威胁条件下,经过空间优化部署模型的解算,编队成员机动到较优阵位,使编队雷达网实现无缝连接且无盲区,从而获得较好的作战效能.文中在该条件下进行了仿真,并对仿真结果进行分析对比,验证了所建立模型的可行性和正确性.该模型对于未来海战场复杂电磁环境下对更好地发挥编队雷达网探测和预警能力具有重要意义.     

通信网资源管理系统集中化建设可行性研究

从技术实现、业务实现、项目实施、建设投资等多个方面分析了通信网资源管理系统集中化建设的可行性,并给出了一种可供参考的集中部署方案。     

一个基于Web的产品定制与仿真系统研究

Web技术的飞速发展使得基于Web的产品定制成为现实,结合了Web技术、产品定制和仿真技术的基于Web的产品定制与仿真系统,在为Web客户提供产品定制的同时可以进行定制产品的性能仿真,及时为客户提供产品性能信息,缩短了产品定制周期,提高了产品定制的效率和客户满意度。通过分析基于Web的产品定制与仿真系统的技术背景与现实需求,提出基于Web的定制系统的功能结构,探讨客户驱动的模块化产品配置技术,并研究基于Web的Matlab与Adams协同仿真实现技术,最终结合振动压路机产品的定制与仿真进行了初步的原型实现。