计算机辅助过程运行CAPO—从两次国际会议看CAPO技术的发展

ＣＡＰＯ是８０年代兴起的计算机应用技术，本文根据１９８７年及１９９３年两次ＦＯＣＡＰＯ国际会议的内容，对这一技术从以下几个方面评述当前的进展情况：ＣＡＰＯ兴起的背景及基本概念；ＣＡＰＯ中的几项基本技术进展，计算机集成制造系统ＣＩＰＳ与ＣＡＰＯ。     

CORBA技术的新发展

为了保持生命力,ＣＯＲＢＡ技术正在继续不断地发展,本文首先介绍ＣＯＲＢＡ的发展历程,在此基础上探讨了ＣＯＲＢＡ３．０的三个主要组成部分;ＣＯＲＢＡ服务,通过值传递对象和ＣＯＲＢＡ构件。随后简述了ＣＯＲＢＡ３．０的另外几个规范：嵌埋式ＣＯＲＢＡ,实时ＣＯＲＢＡ,Ｊａｖａ／ＩＤＬ映射,防火墙和ＤＣＥ／ＣＯＲＢＡ之间的协同工作。     

在VC5程序中应用CORBA对象实现分布式计算

针对ＶＣ５不支持ＣＯＲＢＡ标准分布式程序开发问题。本文巫理论上详细研究了ＣＯＲＢＡ标准体系结构与Ｄｅｌｐｈｉ实现的ＣＯＲＢＡ客户、服务器对象访问机理。从应用上具体指明了如何在Ｄｅｌｐｈｉ环境下创建ＣＯＲＢＡ客户、服务器对象与ＡｃｔｉｖｅＸ组件的编程步骤。最后举例说明在ＶＣ５中,如何开发基于ＣＯＲＢＡ标准分布式应用程序。     

ORACLE关系数据库编程界面PRO＊C的应用

ＯＲＡＣＬＥ关系数据库编程界面ＰＲＯ＊Ｃ的应用北京工业大学高勇秀，徐京晶ＯＲＡＣＬＥ关系数据库被广泛应用于信息管理系统．ＰＲＯ＊Ｃ是ＯＲＡＣＬＥＲＤＢＭＳ提供的应用软件开发工具之一，利用ＰＲＯ＊Ｃ可以实现在Ｃ语言程序中操纵和管理ＯＲＡＣＬＥ数据库。Ｏ...     

CORBA与OLE／COM的应用集成研究

文章以ＣＯＲＢＡ和ＯＬＥ／ＣＯＭ两大构件对象技术为技术背景,讨论了在分布式应用下,基于ＣＯＲＢＡ标准的分布式平台如何集成ＣＯＭ构件,使基于ＣＯＲＢＡ平台的应用能够重用已有的Ｗｉｎｄｏｗｓ家族中的众多构件;同时针对开发ＣＯＲＢＡ应用的瓶颈提出了利用ＯＬＥ Ａｕｔｏｍａｔｉｏｎ技术开发ＣＯＲＢＡ客户应用的方案。     

CASE STUDY OF CAD/CAPP INTEGRATION FOR ROTATIONAL PARTS

ＣＡＳＥＳＴＵＤＹＯＦＣＡＤＩＣＡＰＰＩＮＴＥＧＲＡＴＩＯＮＦＯＲＲＯＴＡＴＩＯＮＡＬＰＡＲＴＳＷｕＨｏｎｇｍｉｎｇ；ＷａｎｇＹａｐｉｎｇ；ＴａｎｇＲｏｎｇｘｉＣＡＳＥＳＴＵＤＹＯＦＣＡＤＩＣＡＰＰＩＮＴＥＧＲＡＴＩＯＮＦＯＲＲＯＴＡＴＩＯＮＡＬＰＡ...     

CMOS RAM结构分析应用

目前的ＰＣ机都采用了ＣＭＯＳ芯片进行系统配置信息保存,ＣＭＯＳ的头６４个字节ＲＡＭ中保存了这些信息,对ＣＭＯＳＲＡＭ存取访问是通过０７０Ｈ和０７１Ｈ这两个端口进行的:读时把欲读出的ＲＡＭ单元地址送到０７０Ｈ端口,然后从０７１Ｈ端口读出该地址内容;写时把欲写入的ＲＡＭ单元地址送到０７０Ｈ端口,然后把欲写入的ＲＡＭ单数据送到０７１Ｈ端口,将ＣＭＯＳＲＡＭ的信息读出后经分析可知ＣＭＯＳＲＡＭ信息存放结构如下表１所示。了解了ＣＭＯＳＲＡＭ的结构及读写方法后,可解决许多问题其中有:①在病毒或人为破坏了ＣＭＯＳＲＡ…     

DCOMS／ActieX和CORBA的比较

本文从企业计算的角度出发,从集成性,可用性和扩展性三个方面较为畜 比较了ＤＣＯＭ／ＡｃｔｉｖｅＸ和ＣＯＲＢＡ这两种当今最主要的分布式组件模型。     

A CONFIGURATION SYSTEM FOR FASTENER DESIGN（AN APPROACH TOWARDS COMPUTER AIDED CONCEPTUAL DESIGN）

ＡＣＯＮＦＩＧＵＲＡＴＩＯＮＳＹＳＴＥＭＦＯＲＦＡＳＴＥＮＥＲＤＥＳＩＧＮ（ＡＮＡＰＰＲＯＡＣＨＴＯＷＡＲＤＳＣＯＭＰＵＴＥＲＡＩＤＥＤＣＯＮＣＥＰＴＵＡＬＤＥＳＩＧＮ）ＧｕａｎｇＺｈｏｎｇ；ＭｉｋｅＤｏｏｎｅｒＡＣＯＮＦＩＧＵＲＡＴＩＯＮＳＹＳＴＥ...     

ICARCV＇96 FOURTH INTERNATIONAL CONFERENCE ON CONTROL，AUTOMATION，ROBOTICS AND VISION

ＩＣＡＲＣＶ＇９６ＦＯＵＲＴＨＩＮＴＥＲＮＡＴＩＯＮＡＬＣＯＮＦＥＲＥＮＣＥＯＮＣＯＮＴＲＯＬ，ＡＵＴＯＭＡＴＩＯＮ，ＲＯＢＯＴＩＣＳＡＮＤＶＩＳＩＯＮ￥／／３－６Ｄｅｃｅｍｂｅｒ１９９６ＷｅｓｔｉｎＳｔａｍｆｏｒｄ，Ｓｉｎｇａｐｏｒｅ，ＣＡＬＬＦＯ...     

FaBiO and CiTO: Ontologies for describing bibliographic resources and citations

Semantic publishing is the use of Web and Semantic Web technologies to enhance the meaning of a published journal article, to facilitate its automated discovery, to enable its linking to semantically related articles, to provide access to data within the article in actionable form, and to facilitate integration of data between articles. Recently, semantic publishing has opened the possibility of a major step forward in the digital publishing world. For this to succeed, new semantic models and visualization tools are required to fully meet the specific needs of authors and publishers. In this article, we introduce the principles and architectures of two new ontologies central to the task of semantic publishing: FaBiO, the FRBR-aligned Bibliographic Ontology, an ontology for recording and publishing bibliographic records of scholarly endeavours on the Semantic Web, and CiTO, the Citation Typing Ontology, an ontology for the characterization of bibliographic citations both factually and rhetorically. We present those two models step by step, in order to emphasise their features and to stress their advantages relative to other pre-existing information models. Finally, we review the uptake of FaBiO and CiTO within the academic and publishing communities.     

FaBiO and CiTO: Ontologies for describing bibliographic resources and citations

Semantic publishing is the use of Web and Semantic Web technologies to enhance the meaning of a published journal article, to facilitate its automated discovery, to enable its linking to semantically related articles, to provide access to data within the article in actionable form, and to facilitate integration of data between articles. Recently, semantic publishing has opened the possibility of a major step forward in the digital publishing world. For this to succeed, new semantic models and visualization tools are required to fully meet the specific needs of authors and publishers. In this article, we introduce the principles and architectures of two new ontologies central to the task of semantic publishing: FaBiO, the FRBR-aligned Bibliographic Ontology, an ontology for recording and publishing bibliographic records of scholarly endeavours on the Semantic Web, and CiTO, the Citation Typing Ontology, an ontology for the characterization of bibliographic citations both factually and rhetorically. We present those two models step by step, in order to emphasise their features and to stress their advantages relative to other pre-existing information models. Finally, we review the uptake of FaBiO and CiTO within the academic and publishing communities.     

遗传规划算法在化合物设计、筛选研究中的应用

采用计算机科学中新兴的遗传规划算法思想，结合化学物质的本质特点，运用进化操作来实现化合物的合成设计和筛选。文中针对算法运用讨论了函数集、终止集问题，通过计算元素组成的字符串的化合价的结果来确定适应度函数，既符合化学学科的本质规律，又满足了算法的要求。通过复制、交换和突变操作，经过多代次的进化终止，取得了满意的结果。文章还针对其实用性，从化学本质出发，提出了建议和研究方向。可以说本文是遗传规划在化学化合物合成筛选中运用的成功探索，同时也为进一步研究打下了坚实的基础。     

A self-adaptation scheme for workflow management in multi-agent systems

Business processes, operational environment, variability of resources and user needs may change from time to time. An effective workflow management software system must be able to accommodate these changes. The ability to dynamically adapt to changes is a key success factor for workflow management systems. Holonic multi-agent systems (HMS) provide a flexible and reconfigurable architecture to accommodate changes based on dynamic organization and collaboration of autonomous agents. Although HMS provides a potential architecture to accommodate changes, the dynamic organization formed in HMS poses a challenge in the development of a new software development methodology to dynamically compose the services and adapt to changes as needed. This motivates us to study and propose a methodology to design self-adaptive software systems based on the HMS architecture. In this paper, we formulate a workflow adaptation problem (WAP) and propose an interaction mechanism based on contract net protocol (CNP) to find a solution to WAP to compose the services based on HMS. The interaction mechanism relies on a service publication and discovery scheme to find a set of task agents and a set of actor agents to compose the required services in HMS. We propose a viable self-adaptation scheme to reconfigure the agents and the composed services based on cooperation of agents in HMS to accommodate the changes in workflow and capabilities of actors. We propose architecture for our design methodology and present an application scenario to illustrate our idea.     

Trailer truck trajectory optimization: the transportation of components for the Airbus A380

European aircraft manufacturer, Airbus, has started a program to develop the largest aircraft ever built, the Airbus A380, which would be able to carry between 550 to 800 passengers on two decks. The six components of the airplane are to be produced in different European cities. They need to be transported from these cities to Toulouse, France, for assembly, and several means of transportation have been investigated. The sizes of the freights, the length of the itinerary, and the narrowness of the critical passages constitute a challenge that classical transportation techniques in the domain of oversized convoys cannot easily overcome. Therefore, Airbus and the French national agency in charge of road management launched a research and development project divided into two parts. The objective of the first part is to adapt functions first to develop for mobile robots to the complex kinematics of trailer-truck systems and integrating these functions into a software platform. The second part of the project aims to define and develop a computer-aided driving system on board the vehicles in order to help the drivers carry out their task. This paper provides a brief overview of the state of the art in trajectory planning for mobile robots and vehicles, and discusses the development of original solutions to address both the kinematic complexity of one of the vehicles and the need to optimize the distance to obstacles.     

低碳经济时代的建筑之道

低碳建筑是营造可持续发展未来的关键。本文通过对低碳建筑的全面分析以及对全球知名的设计实例的分析,探讨适应低碳经济时代的建筑发展的方向、目标,指出低碳建设和设计要走向集约型、走向自然、走向效率设计、走向适应性设计、走向循环设计、走向智能化设的发展途径,以及低碳建筑未来的发展方向。     

排序学习研究进展与展望

排序学习利用机器学习技术去训练排序模型以解决排序问题,是信息检索与机器学习交叉领域的一个新兴研究热点.越来越多的排序学习方法已经应用于实际系统中,如搜索引擎和推荐系统等.本文概括了排序学习的研究进展,并进行展望.首先,阐述了排序学习问题.然后,对排序学习方法进行了分类,并重点分析了依据训练排序模型时所采用的不同机器学习技术的排序学习方法类别.本文还介绍了一些代表性的标准排序学习数据集,对排序学习方法在若干领域的成功应用进行了总结,并归纳了一些排序学习方法软件包.最后,对排序学习的未来发展趋势和挑战进行了展望和探讨.     

Design of an optimized procedure to predict opposite performances in porthole die extrusion

The main objective of advanced manufacturing control techniques is to provide efficient and accurate tools in order to control the set-up of machines and manufacturing systems. Recent developments and implementations of expert systems and neural networks support this aim. This research explores the combined use of neural networks and Taguchi’s method to enhance the performance of porthole die extrusion process; the energy saving and the quality of the welding line are two conflicting objectives of the process taken into account. The complexity of the analysis, due to the number of the involved variables, does not allow the representation of the specified outputs by means of a simple analytical approach. The implementation of a more accurate and sophisticated tool, such as the neural network, results more efficient and easier to be integrated into a simple “ready to use” procedure for predicting the investigated outputs. The main limit to wider implementation of neural networks is the huge computation resources (times and capacities) required to build the data set; a finite element approach was adopted to overcome the time and money wasting typical of experimental investigations. Satisfactory results in terms of prediction capability of the highlighted outputs were found. Finally, a simple and integrated interface was designed to make easier the application of the proposed procedure and to allow the generalization to other manufacturing processes.     

集群负载均衡--CSM的实现

对于现在的互联网络通信状况,负载均衡显示其越来越多的重要性,通常实现负载均衡是使用软件并结合相应的算法,该文所描述的是利用Cisco公司的CSM模块来实现安全可靠的负载均衡,CSM模块将客户机的请求分发到不同的虚拟服务器,配合Cisco MSFC模块并合理地进行DNS的配置,实现网络服务的负载均衡。简要介绍了CSM模块的工作原理,如何配置DNS,如何设置虚拟主服务器,以及如何对系统CSM模块进行设置做了描述。     

个性化的动态网站建设研究与设计

本次设计主要设计了一个校园网站,本文首先介绍了建立本网站的意义。接着简要阐述了Intemet的相关知识及设计一个网站的步骤。然后具体阐述了本网站的整体规划与设计情况,并对制作网页所用到的相关软件的特点与应用作了概括说明,其中主要包括用FrontPage制作页面,用Access制作后台数据库,用asp实现互动功能,用Photoshop6．0加工处理图像等,并讲述了它们的使用要点及其方法。