Resource smoothing: A cost minimization approach

From the available literature, there seems to be no defined approach to resource smoothing exercise except those attempted by Weist (1967, Management Science, 13, B359-B377) and Burgess and Killebrew (1962, Journal of Industrial Engineering, 13, 76-83). The aim of the smoothing exercise is to achieve optimal resource usage by avoiding high peaks and deep valleys in the project resource profile. The general approach has always been to move some activities with floats in the high peak regions to be started at a later date, and as this is done, the valleys will be filled to smooth the resource profile subject of course to time constraint. If this approach is followed as it is, it would be difficult to determine optimality especially when many resources are involved. A cost minimization approach is envisaged in the present study with no limitation on the number of resource inputs. In a situation where the resources are assumed to have the same value, the cost assigned to each of them should be similar. The method follows the general concept but with a difference; cost of the activity in question is considered. The exercise is continued until all the floats are exhausted. The optimum result would then be the one with the minimum cost profile. From examples used for the evaluation, the results obtained are comparable to those of the above two researchers, and some with better results in the majority of cases.     

浅谈战国时秦国的后勤经济战略

秦国能统一中国,除了政治、军事方面的原因,还有一个被史学界忽略的因素：建立了完整的经济战略体系。这套体系包括后勤基地建设、经济改革以及交通路网络。这套体系为秦统一战争提供了巨大的后勤保障。     

基于顾客的品牌权益测评:品牌联想结构分析法

品牌建设的核心是创建品牌权益.通过分析顾客的品牌联想结构,有助于考察品牌建设的效果,揭示品牌对顾客的影响.本文分析了基于顾客的品牌权益概念的科学内涵,详细阐述了品牌联想的构造,并对若干中外品牌的品牌联想结构进行了实证分析.     

信息网络技术对大学生认知方式的影响与“两课”教学教育手段创新

信息网络的普及和迅猛发展对大学生认知方式产生着潜移默化的影响,从哲学和认知心理学的角度探讨信息网络技术对大学生认知方式的影响,适应数字化、网络化技术革命的要求,革新高校马克思主义政治理论课和思想品德课(以下简称"两课")教育教学的手段,对于提高"两课"的时效性和教育教学效果,引导他们自觉地构建科学的认知方式,消除互联网络对大学生认知的负面作用,具有重要的理论的和应用的价值.     

CALIS对高校图书馆文献信息资源建设的作用

CALIS是中国高等教育文献保障体系,对高校图书馆的现代化建设起着至关重要的作用。本文从CALIS系统的服务功能及其对高校图书馆文献资源建设的意义入手,对高校图书馆如何利用CALIS搞好文献信息资源建设,实现文献信息资源共建与共享进行了探讨。     

论网络对当前高校思想政治教育的影响

随着信息的全球化和直通化 ,网络日益显露出它快捷、灵通和多功能的优越性 ,并且其发展变化异常迅猛。不容置疑 ,网络确实扩大了人们的视野使整个世界成为了一个小小的地球村 ,但它对我们产生的影响也应引起我们的重视 ,尤其重视它对当前高校思想政治教育工作的影响     

The wireless network jamming problem

In adversarial environments, disabling the communication capabilities of the enemy is a high priority. We introduce the problem of determining the optimal number and locations for a set of jamming devices in order to neutralize a wireless communication network. This problem is known as the wireless network jamming problem. We develop several mathematical programming formulations based on covering the communication nodes and limiting the connectivity index of the nodes. Two case studies are presented comparing the formulations with the addition of various percentile constraints. Finally, directions of further research are addressed.     

Intelligent scheduling model and algorithm for manufacturing

This paper puts forward an intelligent scheduling model based on Hopfield neural network and a unified algorithm for manufacturing. The energy computation function and its dynamic state equation are derived and discussed in detail about their coefficients (parameters) and steps (Delta t) in iteration towards convergence. The unified model is focused on the structure of the above function and equation, in which the goal and penalty items must be involved and meet different schedule models. The applications to different schedule mode including jobshop static scheduling, scheduling with due-date constraint or priority constraint, dynamic scheduling, and JIT (just in time) scheduling are discussed, and a series of examples with Gantt charts are illustrated.     

布什政府中东国际广播效能评析

为了缓解“9·11”事件后中东强烈的反关甚至仇美情绪，布什政府决定加大对中东的广播宣传。布什政府认为，从整体上讲，中东的媒体环境对美国是“不友好的”，甚至是“充满敌意的”；中东民众所接触到的有关美国的信息是“不真实的”，甚至是“被歪曲的”。这些“不真实”、“不可靠”的信息误导了中东民众，使他们对美国产生了“误解”和“仇恨”。正是基于这种逻辑，布什政府在“9·11”事件后不久很快建立起包括萨瓦电台、自由电视台、自由阿富汗电台等在内的中东广播网络，目的是宣传美国的外交政策，传播美国的价值观，舒缓中东民众对美国的敌意，增进中东民众对美国的好感。但是从2002年初至今的情况来看，布什政府对中东的广播宣传并没有达到预期的效果，其核心原因在于中东民众对美国中东政策的不满。     

局域网技术在计算机硬件实验室建设中的应用

本文介绍了把NOVELL网络应用于微机原理与接口技术等硬件实验中的方法与优势 ,以求能充分利用现有资源 ,改进计算机硬件实验教学的手段 ,提高硬件实验的教学效果 .