Facility location and scale decision problem with customer preference

This paper addresses the facility location problem that aims to optimize the location and scale of a new facility in consideration of customer restrictions, including customer preference and the minimum number of customers required to open the facility. In a classic covering problem, the customer is assumed to be covered if he/she is located within the critical distance zone around the facility and is otherwise not covered. This problem is caused by customer facility selection, which differs from the classic covering problem in which services are determined only by proximity. This paper proposes a mixed integer programming formulation based on customer restrictions and also develops a heuristic solution procedure using Lagrangian relaxation. The suggested solution procedure is shown to yield acceptable results in a reasonable computation time.     

法律法规对钢铁产品中有毒有害物质的限制和钢厂应对策略

介绍了国内外法律法规对钢铁产品中有毒有害物质的限制规定，宝钢在针对这些法律法规的规定进行识别的同时，还研究了用户采购技术规范中的相应规定，确定合适的检化验方法，以验证宝铜的铜铁产品是否符合相关法律法规的规定。根据宝钢的经验，确保钢铁产品符合相关法律法规规定的关键，是对钢铁产品制造过程所使用的原材料进行限制和控制。     

桥梁墩柱钢套箍的质量控制分析

以顺义区机场东路南环立交新建工程主线桥南环立交桥为例，简述了多面体的钢套箍在特殊使用条件下，在加工生产、运输安装等环节的质量控制，通过整个过程的严格执行，取得了较好的效果。     

The relative effects of deprivation of the latent and manifest benefits of employment on the well-being of unemployed people.

This study investigated the relative contributions of the individual latent and manifest benefits of employment to well-being in a sample of 248 unemployed people. Participants completed measures of well-being and the latent (time structure, activity, status, collective purpose, and social contact) and manifest (financial strain) benefits of employment. Significant associations were found between the latent benefits and well-being and between the manifest benefits and well-being. Both latent and manifest benefits contributed significantly to the prediction of well-being, with the manifest benefit accounting for the largest proportion. Although all latent benefits contributed significantly, status emerged as the most important contributor, followed by time structure and collective purpose. Results are discussed in the context of M. Jahoda's (1982) latent deprivation model and D. Fryer's (1986) agency restriction model. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A practical, evidence-based approach for means-restriction counseling with suicidal patients.

Assessing a patient's access to potentially lethal means for suicide and taking steps to restrict access to means are common expectations for reasonable outpatient management of suicidal patients. Although scientific evidence supports means restriction as a suicide prevention strategy, means restriction continues to be infrequently utilized by clinicians, in large part because of the general lack of available training and guidance. The present article reviews the conceptual basis and empirical evidence for means restriction, discusses common barriers to means-restriction counseling, and provides practical procedures and tools (e.g., the means receipt, the crisis support plan) for accomplishing means-restriction counseling in routine clinical practice. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

约束走时层析成像

地震层析成像技术是反演地下速度结构的一种重要方法。与医学ＣＴ不同，一般地震波射线对目的区覆盖不均匀，所获得的数据不充分。在这种情况下，若初始猜测不准，常规的成像方法，如阻尼最小二乘法，ＡＲＴ法等难以获得理想效果。     

爆力运矿采矿法的改进与完善

爆力运矿采矿法能较好地解决倾斜中厚矿体采场内矿石运搬和作业安全问题，具有采切比小、矿石损失贫化低、经济效益好等优点。但是由于各种原因一直未能推广应用。本文针对制约爆力运矿采矿法发展的各种因素，提出了改进的措施和方法，并提出了今后的发展方向和设想。     

交通离散网络设计与土地使用问题的组合模型及求解算法

本文将交通离散网络设计问题和土地使用问题结合起来,以土地使用问题和交通离散网络设计问题之间的相互作用、相互影响关系为基础,对它们进行综合优化设计,寻找基于交通网络和土地使用的综合优化方案,希望能达到在一定的投资约束和土地使用约束条件下使整个网络中的系统总阻抗与居住数量的增加之差最小的目的。文章采用双层规划模型描述土地使用和城市交通离散网络设计之间的相互作用,并设计了基于分枝定界方法的启发式求解算法。最后,通过一个简单的算例,说明该算法是可行且有效的。     

从陶瓷仕女图纹看古代女性文化

仕女艺术源远流长。纵观陶瓷仕女图纹，一幅幅优美的画面，一个个靓丽的仕女背后，实则浸染了几千年封建伦理道德意识对女性的观赏和消费价值的倾向，隐含着男权社会对女性的身体乃至精神的种种禁锢和束缚。这些凄美的仕女图纹深深折射出古代女子的无尽帐惘和万般沉抑之情。