An architecture, functions and relative technology of a service-orientated DL are discussed in this article. Years of research and development of some key techniques and related technologies of digital library have established an important technical foundation for developing a practical digital library. A dozen of digital Libraries can be summarized in three main types as the following: a DL of special collection; a service-orientated DL; a DL with commercial database. Architecture of a service-orientated DL: It is based on an electronically resources which are accessed through a unique interface. Patrons are consulted on Virtual Reference Desk if you have any questions.
Metadata structure and extended rules are two keys while designing descriptive metadata. This study focuses on these two key problems, and illustrates the metadata basic structure, the composing elements and the extended rules according to the practice metadata standards of rare books, rubbings and atlases. It will enhance interoperability among the metadata standards for different resource objects that these problems are considered in metadata designing.
Based on a brief introduction to dynamic customization of digital library services with Web service composition technologies, the paper analyzes and compares the major Web service composition tools including BPML, BPSS, WSCI, BPEL4WS.
On the base of analysing the factors of E-book and summarizing the current representative E-book metadata standards,the paper indicates the object scope of E-book description,the relationship among the objects,the principle to determine the basic object and set down a description metadata scheme of E-book.
This paper presents some investigative work about several copyright technology protection measures used in many electronic reserve systems by many academic and college libraries at home and abroad， including:overview of current status,analyse their features and function，and put out of several typical copyright technology protection measuressome suggestions on adopting copyright technology protection measures.
In working out the metadata standard for audio materials, we should define correctly the objects of description, determine their relationships, and at the same time make clear the component elements of metadata in accordance with the characteristics displayed by those objects and users’ specific needs. The entity layers described by FRBR help us select a proper level for resource description, and decide on the relevant structure of the elements in line with the resource characteristics and user needs. Besides, the 3-dimensional structure of the FRBR model inspires us with a new thought on metadata structures.
This paper discusses the application of UML to Object-Oriented requirement analysis, and points out that it is an effective method of requirement analysis to regard use case as the core of requirement organizing. According
to an instance, several key issues of building use case model have been analyzed and discussed.
XL- an XML programming language has been designed abroad for the implementation of Web Services. XL is fully compliant with W3C standards. One of the key features of XL is that it allows programmers to concentrate on the logic of their application. XL provides high level and declarative constructs for actions typically carried out in the implementation of a Web Service, the productivity of the programmers, the ability of evolution of the programs, and the chances to achieve good performance are substantially enhanced. This paper mainly introduces syntax of XL and gives an example of a Web Service written in XL.
This paper introduces short message service ,discusses the working principle and main function modules of book-return system based on SMS, and how to realize the main functions based on C# language. At last some problems in the sending book-return short message process are discussed.
This paper introduces a new type of Radio Frequency IDentification(RFID) and its application in the library.
The CrossFire Beilstein is the biggest database about organic chemistry facts in the world. The paper introduces the general situation of the database structure, retrieval measures and characters.
Information retrieval in distributed and heterogeneous databases is an urgent problem nowadays. In this paper, a standard protocol is proposed to give an efficient method to solve this problem. This protocol has two main parts. First, a standard search Webservice is given by analyzing many metadata standards and databases. By using this standard Webservice, all databases can distribute uniform search webservice. Then an effective method to select and find the search Webservice is introduced, which is an extension of UDDI.
According to the implementations of E-Resources Navigating Systems of Tsinghua University Library, this paper specifies the requirements of these kinds of Services; and provides the technical solutions of the practical systems.
Study on Internet information organization has being a research focus in the information management field. From the concept, theoretical foundation, content, method, technology, development countermeasure and trend expectation, the paper introduces the current situation on the network information organization study, and points out the deficiency.
The methods of the XML data storage based on RDBMS can be classified into two types. The first type is based on the physical structure of the XML document, the second one is based on the logical structure of the XML document which is described by DTD or Schema. The first type can also be classified into the method based on the edges and the method based on the points. The paper studies and compares the given methods through an XML sample.
In order to keep up with the development of Internet, XML database was produced. XML database is a new technology. Comparing XML database with the traditional database, XML database is suitable for accessing the semi -structured data, it can represent knowledge and migrate data, and it can also integrate the heterogeneous database system. These special advantages of XML database will have a great influence upon the management of network information recourses.
Different E-government system need specific DSS , this paper takes social security as an example, recommends the necessity of DSS in E-governments, discusses the content and goal of DSS of social security in detail. It also e
xplains the key-point of the research and provides a solution of DSS of social security at last.
According to the digitizing construction goal of our library,the article discusses contents and fruits of digitizing construction in our library.The goal is to erect the service-leading digital library.The contents include constructions of figure resource,union sear engine platform ,virtual reference platform,professional troop.The fruits include construction of network infrastructure,software system,digital resource and user service system.
This paper introducesa general Web-based vote system which uses ASP as development tool, system debugging, running environment, system functions, system design and its implementation and application example.
It gives an introduction of the China’s overall situations about the search network of ancient books bibliography, and analyses characteristics respectively and points out the deficiencies,At last, some suggestions are put forward.
The paper expounds the whole design ideas of net resources subject guide system. Most importantly, the paper mainly introduces some important technologys,skills and methods in constructing transformable net resource subject guide system.
In this paper，the anthors discuss the scientific management of open electronic retrieval area with respect to instrument management ，reader management and librarians’ quality and finally propose some improvements on them.
The paper introduces the WLAN technology and its standard, discusses the use and some other problems of the WLAN to the Academic Library.
Taking the IBM FAStT700 as an example, the paper indicates the function and the management of Storage Area Network.
The recent issues about how to implement personalized service are investigated; the concepts and representations of user interests and their transitions, and the structure of UIDB are explored; and those about how to create UIDB by user answers’ selections, update and refine UIDB by user’s feedback information are discussed in this paper.
Three-tier or multi-tier architecture of B/S is becoming general technology of the library software development, the B/S model is also introduced briefly. The paper discusses the technical charac teristics of JSP/Servlet and JavaBeans. A methad in which the three are well jointed in the serverlayer and produce the HTML document by using of JSP is offered to realize extracting datum from data base and dynamic display, and focuses on introducing the technique of dynamic Website with JSP/Servlet and JavaBeans.