Tivoli推出新版Tivoli IT Director

８月１０日,Ｔｉｖｏｌｉ系统公司发布了ＴｉｖｏｌｉＩＴＤｉｒｅｃｔｏｒ２．１版,该软件是为拥有１５００名以上员工的企业集中管理其ＩＴ环境而设计的,它提供了对扩展平台和行业标准的支持,并改进了其性能。ＴｉｖｏｌｉＩＴＤｉｒｅｃｔｏｒ２．１可以支持ＷｉｎｄｏｗｓＮＴ平台、ＡＳ／４００以及ＮｏｖｅｌｌＮｅｔｗａｒｅ５．０,从而使用户能够在自己的ＩＴ环境中管理更多的平台。另一方面,最新的ＴｉｖｏｌｉＩＴＤｉｒｅｃｔｏｒ还可以支持公用信息模型（ＣＩＭ）和桌式管理界面（ＤＭ）标准。这种支持使ＩＴ管理者能够通…     

解压高手Xtractor Plus

该软件支持的文件压缩格式相当多，包括了ＺＩＰ、ＡＣＥ、ＡＲＪ以及ＲＡＲ这四种最常见的文件压缩格式。Ｘｔｒａｃｔｏｒ Ｐｌｕｓ全面支持拖放操作，当你启动 Ｘｔｒａｃｔｏｒ　Ｐｌｕｓ之后，如果有需要解压缩的文件，你可以直接将它拖曳到 Ｘｔｒａｃｔｏｒ　 Ｐｌｕｓ中，这样ＸｔｒａｃｔｏｒＰｌｕｓ就可以自动为你做好文件解压缩的工作了。如果你需要一次解开多个压缩文件，那Ｘｔｒａｃｔｏｒ Ｐｌｕｓ绝对是这方面的高手它允许你一次将数个压缩文件同时解压缩到同一个目录中，非常方便。另外，为了便于用户查找、浏览压缩包内…     

经验点滴

如何在ＡＵＴＨＥＲＷＡＲＥ环境下放大ＡＶＩ 格式文件图象徐济仁 陈家松 （合肥电子工程学院通信与通抗原理教研室 ２３００３７） Ａｕｔｈｅｒｗａｒｅ支持的数字电影格式主要有： Ｄｉｒｅｃｔｏｒ文件 （ ＤＩＲ,ＤＸＲ）、 ＷＩＮＤＯＷＳ视频标准格式文件（ ＡＶＩ）     

主板:SY-7ISA+——性能优秀的815E主板

梅捷ＳＹ－７ＩＳＡ＋主板性能优秀，采用独特的Ｖｏｉｃｅ Ｄｏｃｔｏｒ语音报错技术。     

Analogy和Motorola共同生产虚拟样机

Ａｎａｌｏｇｙ和Ｍｏｔｏｒｏｌａ共同生产虚拟样机Ａｎａｌｏｇｙ（Ｂｅａｖｃｒｔｏｎ．ＯＲ）和Ｍｏｔｏｒｏｌａ的ＳｅｍｌｃｏｎｄｕｃｔｏｒＰｒｏｄｕｃｔｓＳｅｃｔｏｒ（Ｐｈｏｅｎｉｘ．ＡＺ）已达成一项技术协议，共同开发各种虚拟样机．这些虚拟样机用于代替...     

电子设计厂商网址

ＤＳＰ软件开发环境ｅＸＰｒｅｓｓ ＤＳＰ ＴＩ公司同址： ｗｗｗ·ｔｉｃｏｍ 线性电路设计编译工具 Ｈｅｗｌｅｔｔ－Ｐａｃｋａｒｄ公司网址· ｗｗｗ．ｈｐ．ｃｏｍ／ｇｏ／ｈｐｅｅｓｏｆ 芯片综合及布局布线工具 Ｃａｄｅｎｃｅ Ｄｅｓｉｇｎ Ｓｙｓｔｅｍｓ 公司网址· ｗｗｗ．ｃａｄｅｎｃｅ．ｃｏｍ 优化处理器子系统的ＥＤＡ工具 Ｐｈｉｌｉｐｓ Ｓｅｍｉｃｏｎｄｕｃｔｏｒｓ，网址· ｗｗｗ．ｓｅｍｉｃｏｎｄｕｃｔｏｒｓｐｈｉｌｉＰｓ·ｃｏｍ ＶＤＳＭ设计中能确保定时收敛的寄生析取工具 Ａｖａｎｔ！公司网址：ｗｗｗ．…     

宽带电阻百分比智能测量仪

宽带电阻百分比智能测量仪ＡＷｉｄｅ－ｂａｎｄａｎｄＩｎｔｅｌｉｇｅｎｔＩｎｓｔｒｕｍｅｎｔｆｏｒＭｅａｓｕｒｉｎｇＲｅｓｉｓｔｏｒＶａｌｕｅａｎｄＰｅｒｃｅｎｔ┐ａｇｅＴｏｌｅｒａｎｃｅ●蒋敦斌李文英ＪｉａｎｇＤｕｎｂｉｎＬｉＷｅｎｙｉｎ１前言电阻专...     

声卡名词解释——Aureal 3D

简称Ａ３Ｄ,是由大名鼎鼎的 Ａｕｒｅａｌ Ｓｅｍｉｃｏｎｄｕｃｔｏｒ公司开发的新型３Ｄ音效定位技术,使用这一技术的应用程序（通常是游戏）可以根据用户的选择而决定音效的变化,而且可以只用一对普通的音箱或耳机来实现,产生围绕听者的３Ｄ精确定位音效。 Ａｕｒｅａｌ推出的最新一代 ３Ｄ定位音效标准Ａ３Ｄ２．０,还支持对音效４８ＫＨｚ频谱的３Ｄ处理,另外一项关键的进步是采用了实时声学反射、回音和阻塞渲染技术在内的声波追踪（Ｗａｖｅｔｒａｃｉｎｇ）技术。声学环境的几何描述和墙面的材质特性都可在新的Ａ３Ｄ２．０的…     

多媒体开发软件及其使用要点

探究了Ｍａｃｒｏｍｅｄｉａ公司的三大多媒体开发软件Ｔｏｏｌｂｏｏｋ、Ｄｉｒｅｃｔｏｒ、Ａｕｔｈｏｒｗａｅ,提出开发不同的多媒体应用软件对多媒体开发工具的取舍。简介了几个流行的图象和动画处理软件,并就一个多媒体开发项目指出开发过程中使用Ａｕｔｈｏｒｗａｒｅ的要点。     

CPU术语

ＣＭＯＳ：Ｃｏｍｐｌｅｍｅｎｔａｒｙ　Ｍｅｔａｌ　Ｏｘｉｄｅ　Ｓｅｍｉｃｏｎｄｕｃｔｏｒ,互补金属氧化物半导体。ＣＩＳＣ：Ｃｏｍｐｌｅｘ　Ｉｎｓｔｒｕｃｔｉｏｎ　Ｓｅｔ　Ｃｏｍｐｕｔｉｎｇ　,复杂指令集计算机。ＣＰＧＡ：Ｃｅｒａｍｉｃ　Ｐｉｎ　Ｇｒｉｄ　Ａｒｒａｙ,陶瓷针型栅格阵列。ＣＰＵ：Ｃｅｎｔｅｒ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ,中央处理器。ＦＰＵ：Ｆｌｏａｔ　Ｐｏｉｎｔ　Ｕｎｉｔ,浮点运算单元。ＨＬ－ＰＢＧＡ：表面黏著,高而热、轻薄型塑胶球状矩阵封装。ＩＡ：Ｉｎｔｅｌ　Ａｒｃｈｉｔｅｃｔ…     

Object-oriented design and programming in medical decision support.

The concept of object-oriented design and programming has recently received a great deal of attention from the software engineering community. This paper highlights the realisable benefits of using the object-oriented approach in the design and development of clinical decision support systems. These systems seek to build a computational model of some problem domain and therefore tend to be exploratory in nature. Conventional procedural design techniques do not support either the process of model building or rapid prototyping. The central concepts of the object-oriented paradigm are introduced, namely encapsulation, inheritance and polymorphism, and their use illustrated in a case study, taken from the domain of breast histopathology. In particular, the dual roles of inheritance in object-oriented programming are examined, i.e., inheritance as a conceptual modelling tool and inheritance as a code reuse mechanism. It is argued that the use of the former is not entirely intuitive and may be difficult to incorporate into the design process. However, inheritance as a means of optimising code reuse offers substantial technical benefits.     

支持角色双向继承的约束RBAC模型

针对经典RBAC(Role Based Access Control)模型在复杂应用系统中操作繁琐以及难以映射组织结构等不足之处,提出了一种支持角色双向继承的约束RBAC模型BI-RBAC。该模型对经典的RBAC模型进行扩展,增加虚拟角色及其层次结构以支持角色的双向继承,并定义资源操作的概念。给出模型的形式化定义的同时,设计了访问控制算法。模型在自主开发的大型平台软件钱塘中间件平台软件中得到了应用,可较好地支撑恒生证券交易系统等大型软件系统。     

基于双层类结构的继承异常处理方法

继承异常是并发面向对象语言中的一个很重要而且也是处理起来很困难的问题,它会使同步代码难以重用.为解决此问题,文章提出了一种新的双层类结构模型的方法,来解决继承异常问题,它可对同步代码的复用提供全方位的支持.     

用继承扩展XML-RL

XML正在成为Internet上数据描述和交换的标准，用一些重要的面向对象的特征扩展基于高级数据模型上的以规则为基础的XML查询语言XML-RL．首先用元素层次，多重继承和多态扩展了XML-RL数据模型．然后扩展XML-RL以支持多态元素，多态引用，独占元素和独占引用．     

Index organizations for object-oriented database systems

We present an indexing technique providing support for queries involving complex, nested objects and inheritance hierarchies. This technique is compared with two techniques obtained from more traditional organizations. The three techniques are evaluated using an analytical cost model. The discussion is cast in the framework of object-oriented databases. However, results are applicable to data management systems characterized by features such as complex objects and inheritance hierarchies     

Ada-I:支持保护对象继承的Ada95扩充语言

面向对象并发程序设计语言能够帮助程序员利用面向对象技术编写并发程序,从而获得面向对象技术给软件开发带来的种种好处.然而,由于继承异常现象的存在,影响了并发程序设计语言引入继承特性.Ada95语言是支持并发程序设计的面向对象语言之一,但并不支持保护对象的继承.Ada-I语言在Ada95语言的基础上进行扩充,从而支持保护对象的继承,并且避免了继承异常现象的出现.     

Machining activity extraction and energy attributes inheritance method to support intelligent energy estimation of machining process

An energy-efficient intelligent manufacturing system could significantly save energy compared to traditional intelligent manufacturing systems that do not consider energy issues. Intelligent energy estimation of machining processes is the foundation of the energy-efficient intelligent manufacturing system. This paper proposes a method for machining activity extraction and energy attributes inheritance to support the intelligent energy estimation of machining processes. Fifteen machining activities and their energy attributes are defined according to their operating and energy consumption characteristics. Activities and energy attributes are extracted mainly from NC program supplemented with blank dimensional information. An effective extraction method of activities and energy attributes is the basis for the intelligent energy calculating of machining process. Based on an investigation on the extraction procedure of activities and energy attributes, energy attributes inheritance method is further discussed. Four types of energy attribute inheritance rules are summarized according to the different inheritance characteristics. Based on these four types of inheritance rules, the energy attributes can be transmitted from activity to Therblig as effective inputs of Therblig-based energy model of machining processes. The proposed methodology is finally demonstrated through two machining cases.     

面向复用的测试设计模型的研究与实现

本文讨论了测试复用的模型和方法．在对测试设计中的可复用资产及其可复用性进行了深入分析之后，提出了一种面向复用的软件测试设计模型ROTDM．该模型定义了测试的概念模型。抽象并提取了不同颗粒度的可复用测试资产，支持引用、组装和继承等测试复用方法．在此基础上，论文讨论了基于该模型的测试设计脚本以及基于XML的数据交换，并介绍了模型实现工具的设计与实现，最后给出了测试设计复用的实验结果．     

Multi-level assembly model for top-down design of mechanical products

To enable next generation CAD tools to effectively support top-down design of products, a top-down assembly design process is refined from the traditional product design process to better exhibit the recursive-execution and structure-evolvement characteristics of product design. Based on the top-down assembly design process, a multi-level assembly model is put forward to capture the abstract information, skeleton information and detailed information involved. The multi-level assembly model is a meta-level implementation and is easy to be extended. Moreover, the inheritance mechanisms are explored to ensure the feasibility of information transferring and conversion between different design phases in the top-down assembly design process. A top-down assembly design sample is analyzed at length to show the application effects of the multi-level assembly model and the relevant inheritance mechanisms. In addition, a practical topic about the model adaptation of existing CAD systems is also discussed for a broader application of the top-down assembly design. Finally, the conclusion of the work and the future directions for further exploration are given.