Assessing Engineering Resilience for Systems with Multiple Performance Measures

Recently, efforts to model and assess a system's resilience to disruptions due to environmental and adversarial threats have increased substantially. Researchers have investigated resilience in many disciplines, including sociology, psychology, computer networks, and engineering systems, to name a few. When assessing engineering system resilience, the resilience assessment typically considers a single performance measure, a disruption, a loss of performance, the time required to recover, or a combination of these elements. We define and use a resilient engineered system definition that separates system resilience into platform and mission resilience. Most complex systems have multiple performance measures; this research proposes using multiple objective decision analysis to assess system resilience for systems with multiple performance measures using two distinct methods. The first method quantifies platform resilience and includes resilience and other “ilities” directly in the value hierarchy, while the second method quantifies mission resilience and uses the “ilities” in the calculation of the expected mission performance for every performance measure in the value hierarchy. We illustrate the mission resilience method using a transportation systems‐of‐systems network with varying levels of resilience due to the level of connectivity and autonomy of the vehicles and platform resilience by using a notional military example. Our analysis found that it is necessary to quantify performance in context with specific mission(s) and scenario(s) under specific threat(s) and then use modeling and simulation to help determine the resilience of a system for a given set of conditions. The example demonstrates how incorporating system mission resilience can improve performance for some performance measures while negatively affecting others.     

"非个性化":复杂的悖论--艾略特诗学理论探源

艾略特"非个性化"理论是一个复杂的悖论是对浪漫主义的反拨,更是诗人寻找"客观对应物"而"间接地表现他的个性"的经验之谈.艾略特追求和提倡的是把染有个性的想像转变成无个性的艺术真实."非个性化"悖论蕴涵了个性与非个性即特殊与普遍、复杂与纯一的辩证关系.     

论计划生育“三结合”模式的科学性

计划生育“三结合”由吉林省率先提出近十年,并已被国家充分肯定。十年来的实践已证实了计划生育“三结合”的正确与可行,尚缺少理论上的深入研究,经在国家计生委立项的“计划生育三结合之路研究”的软课题中找到了计划生育三结合提出的理论依据,进一步论证了计划生育三结合的科学性。     

A General Model of Some Inverse Combinatorial Optimization Problems and Its Solution Method Under l ∞ Norm

This paper proposes an optimization model and shows that most inverse combinatorial optimization problems so far discussed can be fit into this model as special cases. We propose a Newton-type algorithm for this model under l norm. This algorithm can solve the model in strongly polynomial time if the subproblem involved is solvable in strongly polynomial time for any fixed value of the parameter appearing in the subproblem, and it is shown that most particular inverse optimization problems encountered are this kind. Therefore, through this paper we show that a large group of inverse optimization problems can be handled in a uniform way and solved in strongly polynomial time.     

大学英语分层教学探索

学生入校时的英语水平参差不齐使高专大学英语教学改革势在必行。根据现代教育理论、高专教育英语课程教学基本要求和大学英语分层教学的客观必要性 ,我校从 2 0 0 0年开始在非英语专业学生中实施了两年多的分层教学。实践证明我们的改革是成功的 ,我们的分层教学取得了预期的效果     

创建语篇分析语用模式的必要性及其哲学基础

文章探讨了语篇分析和语用学这两个语言学分相学科的关系,说明两者结合的可能性。创建语篇分析语用模式,不仅有利于语篇分析体系的完善,而且有助于语用学学科的成熟发展。文章从语篇的交际活动性质、认知活动性质以及语篇活动性质出发,阐述了创建语篇分析语用模式的哲学基础。     

论生产关系、经济结构、经济基础的区别

;文章分析了"生产关系"、"经济结构"、"经济基础"这三个概念的区别,揭示了现有经济基础理论中包含着逻辑矛盾.在这个基础上,下了一个新的经济基础的定义一定社会的经济基础是与该社会占统治地位的生产关系具有非对抗性矛盾的各种生产关系的总和(或系统).     

新时期思想政治教育的目标模式

党的思想政治教育的根本目的是为无产阶级解放事业服务 ,它在不同时期表现为不同的培养目标 ,而对培养目标的规定又展开为具体的目标模式。在革命战争年代 ,思想政治教育的目标是培养革命者 ,其具体模式以毛泽东为陕北公学的题词为代表 ;建国后 ,思想政治教育的目标是培养无产阶级革命事业的接班人和社会主义事业建设者 ,其具体模式以毛泽东关于“两有”的表述为代表 ;在新时期 ,思想政治教育的目标是培养社会主义事业建设者和接班人 ,目标模式是邓小平提出的“四有”新人。这一目标模式的成熟形态具有全面性、重点性、层次性和总体性特点。江泽民在新形势下丰富发展了这一目标模式     

高校"推优"工作的基础、点与面、制度

优秀团支部建设是高校推荐优秀团员青年入党工作的基础,党团校、社团载体是此项工作全面铺开的主阵地及其外围延伸,党内生活、任务担子与相关团、学活动则发挥锻炼重点对象实践素质的作用,双向责任,"一对一"联系人、定期考察鉴定,党团衔接则是保证"推优"过程规范化的好制度.     

试论艾略特《荒原》中的“非个人化”理论

文章结合艾略特的＂非个人化＂理论对其诗作《荒原》进行解读,通过对这首诗的分析来阐释该理论的内涵,＂非个人化＂理论在此诗中得到了成功的运用,其中关于该理论的重要表达手法也贯穿其中。