Parametric Devices and Masers: An Annotated Bibliography

This bibliography is restricted to books and periodical articles published prior to October, 1959. No attempt has been made to include the voluminous material to be found in technical reports, patents or similar sources.     

Annotated Bibliography of Local Communication System Interconnection

An annotated bibliography of interconnection of local communication systems is presented. The interconnection of local area networks and interconnection by means of metropolitan area networks are emphasized.     

An Annotated Bibliography of Microwave Circulators and Isolators: 1968-1975

A bibliography of microwave circulators and isolators from 1968 to 1975 is presented. Some observations on selected topics are made.     

Mathematical Models for Communication: An Introduction

In the situation where man is deprived of all possibility of intellectualization, that is, of interpreting geometrically a given process, either he will seek to create, despite everything, through suitable interpretations, an intuitive justification of the process, or he will sink into resigned incomprehension which habit will change to indifference…. The dilemma posed all scientific explanation is this: magic or geometry? (Thom, 1975, p. 5)     

参数可调的战斗机空战效能评估系统研究

针对战斗机新的技术和战术特点,建立了完备的战斗机空战效能评估指标体系。突出了战斗机的高机动性、强态势感知能力及优良的电子战能力,并给出了运用解析法计算各指标的公式。在分析战斗机空战效能评估方法的基础上,提出了一种基于S型曲线的参数可调的战斗机空战效能评估模型。将S型曲线中的一个参数作为可调参数,大大增强了评估模型的灵活性。利用该模型对F-16C使用数据链前后及3种机型的空战效能进行仿真评估,详细说明了可调参数的选取方法及该模型的应用。仿真结果表明,该模型灵活、有效,在评估过程简单可行的前提下增强了评估结果的可信度。     

一种改进的弹道导弹预警系统作战效能评估方法

分析了弹道导弹预警系统作战效能的评估现状,构建了作战效能评估指标体系,运用层次分析法(AHP)对二级权重系数进行了分析,运用模糊综合评估法建立了弹道导弹预警系统作战效能模型,对其进行了作战效能评估。指标体系科学合理,解决了评估过程中权重系数确立模式单一的问题。     

多形态卷积并行神经网络建立效能评估指标体系

针对复杂装备建立效能评估指标体系的难题,引入了一维卷积神经网络模型,构建了多形态卷积核并行处理框架;从多个观测角度自适应学习装备原始运行数据,再对数据蕴含的特征加以整合,进而建立新的效能评估指标体系,避免了主观因素和计算难度的束缚,为研究效能评估智能化方法奠定了基础.     

一种基于多维云模型的武器系统效能评估方法

随着云模型的发展,已经提出了基于多维云模型的武器系统效能评估方法.而所提出的评估方法中,对云模型3个参数的确定方法尚不够成熟,为了更加明确地确定云模型的参数、充分利用已知信息,采用了逆向云发生器算法,获得云模型参数,对原有方法进行了补充和完善.通过实例验证,证明了可行性,为多维云模型在效能评估中的应用提供了参考,并为今后的发展方向进行了简要总结.     

电子对抗系统效能分析

电子对抗系统效能分析是确定电子对抗系统可靠性指标和分析电子对抗系统作战能力的重要手段,文章建立了电子对抗系统效能分析数学模型,提出了进行装备效能分析的一般方法。     

The Dependency Model: A Tool for Calculating System Effectiveness

The Dependency Model (DM) is a mathematically unsophisticated but useful and practical tool for measuring the effectiveness (reliability, availability, maintainability, efficiency, etc.) of a complex system. Contrary to classical models, the DM does not require arbitrarily chosen statistical distributions or expensive simulations for its application. The large computer storage and running time requirements, the need for an accurate random number generator, and the inherent stochastic inaccuracy associated with such Monte Carlo techniques are thereby avoided. However, the DM does require the user to assign relative weights to the elements of the system, and to measure the performance of the lowest level elements considered. Common models such as GEM, TIGER, and REX assume a series-parallel structure. Although this might be sensible when applied to the lowest replaceable units (LRUs) in a hardware structure, it is unreasonable to apply it to components further up in the hierarchy, or to software. Thus, redundancy is not clearly defined for software. If there is an error in the code, placing identical programs in parallel does not eliminate that error. The series-parallel logic structure allows only for each component to be up or down, with no gradation. In contrast, the DM measures the degree of failure of a component or system, in addition to the probability and method of failure that can be determined from classical models. The elementary structure and flexibility of the DM yield additional benefits.     

活动轮廓模型综述

基于活动轮廓模型的目标分割、物体跟踪方法是近十几年来图像和视频领域研究的热点,它可以将待处理问题的先验知识与各种图像处理算法有效地融合在一起,比以往的计算机视觉理论有更强的实用性.本文结合图像分割方法从指导思想和所用的数学方法两方面对活动轮廓模型特别是几何活动轮廓模型中基于水平集方法的C-V方法做了一定综述.     

电子战系统作战效能的评估

电子战系统作战效能评估是电子战领域的一项重要课题.从电子战系统作战效能概念入手,介绍了层次分析法、模糊评判法和灰色系统理论方法3种效能评估的方法,分析了各自优缺点.熟练掌握这些评估方法,可以为电子战系统的研制、鉴定和使用提供可靠准确的数据.     

提高质量管理体系运行的有效性

增强质量管理体系运行的有效性,是提高企业整体绩效、进一步提升核心竞争力的重要途经之一.通过对产品实现过程中的一些过程的作用和控制进行分析,对质量管理体系运行的现状和问题进行分析,进而对如何进一步提高质量管理体系运行有效性提出了一些意见和想法.     

基于RMS的机群系统任务效能仿真

可靠性、维修性和保障性（RMS）是影响机群系统任务效能的重要因素,机群系统效能的解析计算模型无法体现具体的任务剖面以及备件保障延误等因素的影响,Simlox仿真方法可以针对机群系统在特定保障条件下的任务系统效能进行仿真分析。针对执行连续任务的机群系统任务效能进行了仿真分析,得出RMS参数对任务系统效能的影响。     

Cost Effectiveness, System Effectiveness, Integrated Logistics Support, and Maintainability

The cost effectiveness concept covers the measure of a system in terms of total dollar value. Cost effectiveness encompasses the elements of system effectiveness (a quantitative measure of a system's technical ability) as well as cost. One of the elements of system effectiveness is maintainability. Maintainability is an effective mechanism for the accomplishment of planned maintenance during the early design and development phases of a system. Planned maintenance is an element of integrated logistics support. The intent of this paper is to outline the basic elements associated with cost effectiveness, system effectiveness, and integrated logistics support, to outline the interrelationships of these concepts, and to cover the discipline of maintainability as an element of each concept.     

Progressive Cut: An Image Cutout Algorithm that Models User Intentions

In this article, we presented a progressive-cut algorithm for background and foreground segmentation. We first analyzed the user intention behind the additional user-specified stroke, and then incorporated the user intention into the graph-cut framework: we derived an eroded graph to prevent overshrinkage, and added a user attention term to the energy function to compress overexpansion in low-interest areas. Experiments showed that the new algorithm outperforms existing graph-cut methods in both accuracy and speed, and it effectively removes the fluctuation effect, making results more controllable with fewer strokes.     

基于C/S模式和B/S模式结合的ZZGL系统开发方案

在企业管理信息系统开发中，单一的Client／Server(C／S)两层模式和Browser／Server(B／S)三层模式已经不能满足信息需求的快速发展，本文通过比较管理信息系统开发模式C／S和B／S模式的优缺点，提出以C／S和B／S模式相结合的系统开发思想，并作为实际开发的“武汉重型铸饭厂管理信息系统”(ZZGL系统)的设计实现方案。     

From WebEx to NavEx: Interactive Access to Annotated Program Examples

This paper reviews our work on providing students interactive access to annotated program examples. We review our experience with WebEx, the system that allows students to explore examples line by line. After that we present NavEx, an adaptive environment for accessing interactive programming examples. NavEx enhances WebEx with a specific kind of adaptive navigation support known as adaptive annotation. The classroom study of NavEx discovered that adaptive navigation support can visibly increase student motivation to work with nonmandatory educational content. NavEx boosted the overall amount of work done and the average length of a session. In addition, various features of NavEx were highly regarded by the students.     

A Classification System for Reliability Models

There has been little attempt to introduce a general classification system for reliability models analogous to those in other areas of applied probability, notably queueing systems. Thus there has been an unavoidable confusion in the literature and considerable unnecessary duplication of investigative effort. This paper argues the case for a classification system analogous to that in use for queues; identifies necessary features of such a system; and proposes a partial classification system. To be successful such a system must not only be a relatively convenient summary of diverse models, but must have the general support of the reliability community.