电机零部件压铸成型质量控制方法研究

针对电机零部件压铸成形质量不高的问题,在分析主要成形缺陷来源的基础上,讨论了包括结合有限元数值模拟与现代优化理论进行的成形工艺参数优化,针对特定产品改进模具结构,提高铸件成形质量;并且,提出了应使用三维参数化设计,避免了重复的劳动,提高了生产效率。     

辊涂机控制系统在镀锌线的应用及改进

介绍马钢热镀锌机组辊涂机控制系统,并针对生产过程中出现的种种故障提出处理措施。     

Ergonomics Improvement in Order Selection in a Refrigerated Environment

The purpose was to conduct an ergonomics improvement in the order selection process in a refrigerated dairy factory. The workers' task was to pick dairy products to fulfill orders. Plant walkthroughs, unstructured interviews, and direct observation methods were used to study the existing process and problems. Ergonomics intervention was made by introducing a wireless handheld scanning system. A field experiment was carried out to compare the conventional paper pick list with the new system. Results indicated that workers faced difficulty in the paper pick list system, that is, to grasp a clipboard, turn pages, and place marks while wearing thick gloves. The new system eliminated this problem, and because of its ergonomics visual and audio feedback properties and more efficient process, it increased productivity (by 8.4%) and workers' satisfaction, simplified tasks, improved work quality, and reduced delay in invoicing. Replicating the intervention, other process‐based manufacturing companies may reap similar benefits. © 2012 Wiley Periodicals, Inc.     

来自北京之花——北京牡丹电子集团公司彩电质量工作总结

介绍了牡丹集团开发大屏幕彩电的技术改造、产品更新、质量管理与控制以及售后服务的情况。     

Introduction to the special section on cognitive training in later adulthood.

This article introduces the special section on cognitive training in later adulthood. The section focuses on the topics of cognitive training studies, training improvements, and cognitive research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

影响CLINSULF硫回收装置正常运行的因素

介绍了淮化新系统CLINSULF硫回收装置，对影响装置正常运行的因素进行了分析，并针对这些影响因素实施一些改进措施。     

An approach for an efficient execution of SPMD applications on Multi-core environments

Executing traditional Message Passing Interface (MPI) applications on multi-core cluster balancing speed and computational efficiency is a difficult task that parallel programmers have to deal with. For this reason, communications on multi-core clusters ought to be handled carefully in order to improve performance metrics such as efficiency, speedup, execution time and scalability. In this paper we focus our attention on SPMD (Single Program Multiple Data) applications with high communication volume and synchronicity and also following characteristics such as: static, local and regular. This work proposes a method for SPMD applications, which is focused on managing the communication heterogeneity (different cache level, RAM memory, network, etc.) on homogeneous multi-core computing platform in order to improve the application efficiency. In this sense, the main objective of this work is to find analytically the ideal number of cores necessary that allows us to obtain the maximum speedup, while the computational efficiency is maintained over a defined threshold (strong scalability). This method also allows us to determine how the problem size must be increased in order to maintain an execution time constant while the number of cores are expanded (weak scalability) considering the tradeoff between speed and efficiency. This methodology has been tested with different benchmarks and applications and we achieved an average improvement around 30.35% of efficiency in applications tested using different problems sizes and multi-core clusters. In addition, results show that maximum speedup with a defined efficiency is located close to the values calculated with our analytical model with an error rate lower than 5% for the applications tested.     

多级离心式打水泵密封保护环改造

介绍了合成氨生产中多级离心式打水泵密封保护环的改造。     

Understanding and confronting cultural complexities characterizing water,sanitation and hygiene in Sub-Saharan Africa

This article uses theoretical discourses on risk to engage in a review of cultural and religious concepts that challenge the achievement of universal access to water, sanitation and hygiene (WASH) in Sub-Saharan Africa. In the review, complex WASH behaviours evolve in relation to dominant situated experiences, often nested in cultural and religious beliefs and values, which tend to complicate risks and limit the attainment of universal WASH coverage in the subregion. The article argues that framing problems purely with respect to socio-economic limitations fails to account for the contextual triggers of WASH behaviours, making intervention programmes less likely to succeed.     

AP1000核电站核仪表系统信号侧设计改进

AP1000堆型作为典型的第三代核电站,在堆外核测系统的信号侧设计上相比国内典型二代堆M310堆型的设计做了较大改进.本文将针对AP1000核电站核仪表系统（NIS）从探测器到前置放大器之间的部分,分为源量程、中间量程和功率量程具体介绍相对于M310堆型在探测器本体、信号放大器等方面所做的改进,以及这些改进对探测器灵敏度及信号强度的增强原理及效果,并提出对这些改进在机组安装、调试、运行和大修期间对维修策略造成的影响和应对对策.