数字水印演化设计

数字水印算法中相关参数的选择是水印算法设计的一个关键问题。不同的参数选取，将直接影响到算法的有效性。该文给出一种采用演化计算进行水印参数有效选择的方法，实验结果表明，这种方法在提高水印健壮性的同时保证保真度。     

Probe into Key Techniques of Regional-Oriented 3D GIS On the key techniques of 3D GIS used for regional Geological Information System

Regional Geological Information System combines the multi-dimensional and dynamic spatial information into an integrated spatial information system. 3D geological modeling and its preprocessing or post-processing are the most difficult problems for constructing the system. Based on the current 3D GIS technique, some basic problems in establishing the system are discussed in this paper, including 3D spatial data model, 3D geological modeling, and visualization of 3D geological data. A kind of 3D vector data model based on boundary representation for geological object and its topology was developed in order to model and visualize complex geological structures. In addition, some key techniques are pointed out for further study.     

Predicting the Outcome of Construction Litigation Using Boosted Decision Trees

Construction litigation has become commonplace in numerous construction projects, particularly in large contracts. Miscommunication, inadequate plans and specifications, rigid contracts, changes in site conditions, nonpayment, catch up profits, limitations on manpower, tools, and equipment, improper supervision, notice requirements, constructive changes not recognized as such by owner, delays, and acceleration measures provoke claims and often result in disputes. A boosted decision tree system was used to predict the outcome of construction litigation. The study was conducted by using the same 114 Illinois court cases that were used in earlier prediction studies conducted with artificial neural networks in 1998 and case-based reasoning in 1999, augmented by an additional 18 cases that were filed in 1990–2000. All cases were extracted from the Westlaw on-line service. The best prediction result obtained with boosted decision trees was 90%. The boosted decision tree model appears to be a promising tool to help create a dispute-free construction industry.     

ISSE在信息系统中的应用

ISSE是由NSA提出的一种为信息系统提供安全服务的系统工程。该文介绍了系统工程和ISSE，并阐述了在一个信息系统的设计与实现中如何运用ISSE。     

文本知识发现:基于信息抽取的文本挖掘蝌

In the general context of Knowledge Discovery, Knowledge Discovery in Text (KDT), which uses TextMining techniques to extract and induce hidden knowledge from unstructured text data, surges in the data and naturallanguage processing research. KDT is a multi-discipline of Artificial Intelligence, Machine learning, Natural Lan-ing with a stressing on its IE (Information Extraction)-based induction and specific sublanguage fields oriented prac-tices.     

ISO 9000 versus CMM: Standardization and certification of IS development

A growing number of software developers use standards as a basis for their quality systems. Some of them go one step further and have their quality systems certified. In this paper, two well-known quality standards, ISO 9000 and the CMM, are compared. It is concluded that both standards are useful but there is a growing need for more specific standards.     

CIMS中信息建模原则及一种面向对象的建模方法和实现

该文讨论了ＣＩＭＳ中信息建摹基本原则，结合一个实例阐述了一种面向对象建模的方法，该方法可以完整描述地系统的动、静态特性，实现管理系统和工程系统的信息集成。     

一种基于本体论的照片注释技术

介绍了本体论的概念，然后以动物照片为例建立了用于照片注释的本体论，并用一种类RDF Schema格式的文件表示；最后用JAVA程序实现对照片进行注释，生成RDF格式的注释文件，便于照片信息的快速高效再利用。     

建筑施工管理中的管理信息系统研究

大型建筑项目施工管理作为一个系统工程,具有施工面宽,流动性较大,不可预见因素较多,容易受外界因素的影响等特点;尤其是类似高校新校区建设等的重点建设项目,具有规模大、影响大、涉及面广、质量标准和技术要求高、施工单位和协作配合环节多等特点。这样,业主、承包商和监理在施工阶段进行项目管理和目标控制时所需采集、处理和分析的信息量相当宏大,工程管理工作量大而复杂。因而,借助计算机进行辅助管理也越来越显得重要。作者将首先介绍管理信息系统的基本概念及其发展状况,随后着重阐述建筑施工管理系统的基本概念及各子系统之间的关系,最后提及了建筑施工管理系统设计的概念。     

关于管理信息化工作的思考

本文探讨在管理信息化工作的关键内容,分析了信息、信息工具与管理工作的关系,强调信息数据的重要性。认为信息是管理工作的主要内容,信息的载体从纸张介质向电磁介质转化,信息工具因此发生了重要变化。管理工作是对工作中产生的信息进行处理,信息量的大小决定了组织结构,信息的如何处理决定了管理的工作流程。管理信息化工作要从信息载体变化的前提出发,考虑这个转变所带来的各种困难,充分应用信息工具的各种资源。在管理信息化工作中应考虑企业的成本和效益。管理系统应从业务出发,打破部门的界限,从数据源头开始,着重考虑权限的榨制,增强灵活性和适应性。