汽车行业中塑料材料在汽车内外饰中的运用

目前,汽车工艺制造和生产中,塑料材料得到了普遍应用,塑料既能够引用在日常生活物件,又能够应用在汽车内外饰种。优质的塑料材料的作用是十分重要的。本篇文章,作者主要通过分析塑料的应用现状,研究塑料材料用于汽车内外饰的相关情况,讨论新型材料的研发,为汽车内外饰应用塑料材料提供理论依据。     

军用外设机箱复合材料

军用外设小型化技术之一是机箱材料塑料化。本文对金属机箱、塑料机箱作了分析比较，提出复合材料作为机箱材料的可能性，并对机箱复合材料作了探讨。     

基于ClearQuest的软件变更管理系统的设计与实现

军用软件的研制过程中,软件变更管理控制是提高产品质量的重要手段,也是提高军用产品竞争力的重要方法,但实现软件产品的质量管理控制却非易事。基于ClearQuest系统,按照相关军标要求设计软件变更管理系统,能更好的实现软件研制过程的技术状态控制。基于此,介绍了建立ClearQuest系统的要点和重要功能,并对实际项目的应用结果进行分析。结果表明,应用该系统对提高军用软件技术状态控制的能力至关重要,可进一步提高军用软件的质量。     

军用软件检验方法研究

计算机技术在军用信息化的发展与应用,使武器装备系统中软件成分的比例越来越高、规模越来越大,极大地提高了武器装备的许多原有性能,发挥了最大潜能,获得了崭新的能力。军用软件的质量已经成为检验军工产品的重要指标。长期以来,在使用和实践中暴露出的软件与软件有关的问题逐渐增多,直接影响了整个武器系统的质量,为避免和消除错误,就要加强军用软件检验方法研究,来不断提高武器装备软件的质量与可靠性。     

华塑HsCAE3D技术在塑料注射成形领域中的研发与应用

塑料注射成形在塑料加工行业中占有非常重要的地位.传统的塑料注射成形开发方法主要是尝试法,依据设计者有限的经验和比较简单的计算公式进行产品与模具设计,及其工艺开发.但是在生产实际中,注射成形塑料熔体的流动性能千差万别,制品和模具的结构千变万化,生产环境和工艺条件也各不相同,因此在开发过程中要进行反复试模与修模,并一再调整工艺参数,甚至必须从新设计方案开始,才能正式投产.     

塑料半圆外壳的模具设计和数控加工

本文以一款塑料半圆外壳塑料模分模设计和数控加工为例,较为详尽地讲述了运用CAD/CAM软件进行塑料产品模具分模设计和数控加工的工艺和步骤。一、产品分析图1所示为一半圆塑料外壳的3D图。材料为ABS,收缩率为5‰。塑件的表面质量要求较高,曲面过渡圆滑。塑件是中空的,侧部大孔上设计有一矩形缺口。为保证产品中间的半     

浅谈对火控系统软件的监控与验收

随着武器现代化进程，计算机软件在大型复杂武器系统中的 应用越来越广泛，软件的质量直接影响到系统的作战效能。目前军用软件产品还不能象军用 硬件产品那样形成完整的质量监控和验收体系。针对这一现状提出了对火控软件在设计阶段 、编程阶段和产品阶段质量监控与验收的见解，供有关人员参考。     

虚拟制造技术在吸尘器制造中的应用

该文简要介绍了面向机械设计制造过程的虚拟制造技术的特点和应用方法，分析了应用中的主要技术环节和技术方法，并阐述了如何应用虚拟制造技术提高生产企、世的经济效益。如何在虚拟原型产品的设计中，应用三维设计造型工具进行产品的外形和结构的布局设计。应用ADAMS系统的动力学仿真结果对产品结构进行了改进设计，解决了尾杆滚轮的运动不平衡问题。应用HSCAE Smart5．O系统对塑料外壳进行了注塑成形过程模拟分析，优化了注射成形工艺，避免了成形缺陷，提高了产品的性能，缩短了设计制造周期。     

基于PDM平台的CAPP系统应用

一、产品和工艺特点 中国电子科技集团公司第十四研究所(以下简称十四所)是一家集科研、生产于一体的大型研究所,成立于1949年10月.十四所以生产军用雷达为主,产品结构和功能复杂,零部件数量众多,生产周期较长,而且主要是以单件小批量为主.因此,工艺工作在生产中占有举足轻重的地位.     

军用电池试验数据在信息化条件下的管理与应用

军用电池试验能够检验出军用电池在电池材料、制造工艺、组装技术、电池结构等方面的问题,可使军用电池朝着更安全、更高效、更长寿命的方向发展。本文着重阐述如何利用计算机管理军用电池试验数据,并给出了相关的系统设计图表等内容。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。