Improvements in technology have increased the amount of human interactive systems that support visual and audial operations. Besides many others, especially the recent entertainment industry has been built on the digital world and processing large collections of multimedia materials. Having huge amount multimedia data revealed the need for efficient and effective ways of modeling, storing, addressing, and retrieving such huge data, mostly, the semantic contents in it. Although there are some database management systems that support multimedia objects by some add-ons or extensions, they are far away from satisfying user requests, which are usually based on similarity and semantic contents. In this study, the requirements of multimedia databases are analyzed. To satisfy such requirements, a database architecture which is specialized for multimedia objects is constructed and a conceptual data model, handling semantic multimedia contents is implemented. In the architecture, a semantic information extractor, a high-dimensional index structure and an intelligent fuzzy object-oriented database component are integrated through a coordinator structure. The proposed architecture is realized and a prototype system is implemented by tightly coupling several multimedia modules.

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A symbolic image database system is a system in which a large amount of image data and their related information are represented by both symbolic images and physical images. How to perceive spatial relationships among the components in a symbolic image is an important criterion to find a match between the symbolic image of the scene object and the one being store as a modal in the symbolic image database. Spatial reasoning techniques have been applied to pictorial database, in particular those using 2D strings as an index representation have been successful. In this thesis, we extend the existing three levels of type-i similarity to more levels to aid similarity retrieval more precisely. There are 13 spatial operators which were introduced by Lee and Hsu to completely represent spatial relationships in 1D space. But, they just combined the 13 spatial relationships on x- and y-axis to represent the spatial relationships in 2D space by 13 times 13 = 169 spatial relationships. However, the 169 spatial relationships are still not sufficient to show all kinds of spatial relationships between any two objects in 2D space. For example, the directional relationships, like North or South West, exist in 2D space and is difficult to be deducted from those 13 spatial operators. Thus, we add the nine directional relationships to the 169 spatial relationships in 2D space. In this way, we can distinguish up to 289 spatial relationships in 2D space. Moreover, in our proposed strategy, we also take care of the problem caused by the MBRs. In most of the previous approaches for iconic indexing, for simplifying the concerns, they apply the MBRs of two objects to define the spatial relationship between them. The topological relationships, however, between objects can be quite different from the spatial relationship of their respective $MBR$s. Therefore, sometimes, it is hard to correctly describe the spatial relationship of the objects in terms of the relationships between their corresponding MBRs. To improve this drawback resulted from MBRs, we adopting the concept of topological relationships in our proposed strategy. Good access methods for large image databases are important for efficient retrieval. The signature files can be viewed as a preselection searching filter to prune off the unsatisfied images. In order to solve the ambiguity of the MBRs and to present the spatial relationships in two dimensional space completely, we propose a hybrid approach-based signature extraction method for similarity retrieval. From our simulation study, we show that our approach can provide a higher rate of a correct match and requires a smaller storage cost than Lee et al.'s 2D B-based signature approach. In some case, the correct match rate based on our proposed strategy can be up to 42.18%, while it is just 16.66% in Lee et al.'s strategy. Moreover, the worst case of the storage cost required in our proposed strategy is 1686 bits. But, it always needs 2015 bits in Lee et al.'s strategy.

The liberalization, internationalization, securitization and computerization of the financial market in Taiwan is forcing the banking industry to face rapid changes. Furthermore, only the banks which make use of the information technology more efficiently will get the competitive edge and improve her performance through offering a diversity of products and services. The banking industry has used the financial information technology to replace the banking operation procedures conducted conventionally by human. The most important for the banks is how can they supply financial information and offer solutions to meet each client's requirements individually. This can be achieved by enhancing the quality of services by means of call center, electronic, home banking, ATM, etc. This study intends to examine consumer behaviour by using multi-variable statistical analysis with costomer segmentation. Moreover, this study will suggest that the banking industry performance can be improved by changing the bank's operation systems and changing the competitive strategy to focus on individual customer needs. Established over 26 years, United World Chinese Commercial Bank (UWCCB) has a distinguished record of achievement. As at the end of the year of 2000, the bank has more than 70 branches, and the paid-in capital and net worth amounted to NTD 34.10 billion (USD 1.0 billion) and NTD 63.20 billion (USD 2.0 billion) respectively, while its total assets have up to NTD 661.20 billion (USD 20.0 billion), and the number of accountholders has reached 4.20 million which make UWCCB able to become a global bank with sound foundations. Based on these valuable data sources, this study intends to analyse the related contribution by taking into consideration of customer characteristics and individual requirements, then to broaden the operating scale and increase the profit. Furthermore, this study also intends to make some suggestions for the bank able to excerpt more revenues from some groups of clienteles. The appliance of financial information technology has brought more opportunities for the banking industry, not only for the maximum benefit of customers, it also help the banks to perform the function of ¡§money-flow¡¨ in the economy. Keywords¡GBanking Performance, Multivariate Statistical Analysis, Database Marketing, Internet Banking, Information Technology

This research is aimed to build a social network system for college teachers by retrieving different data sources available on the Internet, the characteristics of the constructed social network are represented in graphic and numeric modes. By applying relationships maintained in the social network, we can find the shortest path between any two researchers or the ego-center social network of any individual teacher according to the input parameters given by a query user.. That is to say we have realized the knowledge map concept for college teachers. In this research, we focus on searching the advisory relationships between advisors and students. . Because after a Ph.D. student graduated, he/she could be an advisor guiding other students, by applying recursion of advisory relationships ¡A we can construct a multi-level hierarchy of family-tree for a given advisor and the family-tree can be viewed as a whole family-tree and just those non-leaf nodes. We also analyzed some interesting characteristics of the created family-tree¡A compared with the human relationships in our real society to evaluate and explain some phenomena happened in our academic society. Furthermore, we combine two information of social network and knowledge map for developing the ANIWEB system, providing web-based query functions for users to search teachers¡¦ social network. Two types of query can be applied, one is searching for teacher¡¦s personal information, such as biography, educational background, specialty and NSC projects; the other is searching for social network information about an interested teacher, such as multi-level advisory relationship, co-advisory relationship, ego-center social network and the shortest path between any two teachers. Users can apply different search patterns for their different needs. For example, a user can first search for those teachers with an expertise of a given research topics, then search for the shortest path from the social network to find out the expert he/she could get in touch.

In den sächsischen Hochschulbibliotheken existiert eine große Anzahl an wissenschaftlichen Datenbanken (Referenzwerke, Fakten- und Volltextsammlungen), die den Benutzern zur Verfügung gestellt werden. Neben den zunehmend wichtiger werdenden Internetangeboten gibt es nach wie vor auch sehr viele Datenbanken auf CD-ROM oder DVD. Der Zugriff auf diese Werke soll künftig sachsenweit einheitlich über das Internet erfolgen....

<p>Today more and more Information systems exist and they contain more and more information. Many information systems contain information about people that is secret or sensitive. Such information should not be allowed to leak from a database. This problem grows more and more as databases are made available via the Internet.</p><p>There have been a number of publicised occasions where hackers have passed security barriers and got information that is not intended to be publicly available. There have also been cases where the administrators of systems have made mistakes, so that classified information was published on the Internet.</p><p>The FiLDB architecture uses existing technology together with new components to provide an environment in which databases can be connected to the Internet without losing security. Two databases, with physical separation between them, are used as a security measure. Secret information is stored only in an internal database, which is separated from the Internet. An external database contains information which is to be used from the Internet, and hence sensitive information is not stored in this database.</p>

<p>Open source software is becoming increasingly popular and many organizations are using them, such as apache (used by over 50% of the world’s web servers) and Linux (a popular operating system). There exist mixed opinions about the quality of this type of software.</p><p>The purpose of this study is to evaluate quality of open source CASE-tools and compare it with quality of proprietary CASE-tools. The evaluation concerns tools used for database modeling, where the DDL-generation capabilities of these tools are studied. The study is performed as a case study where one open source (two, after experiencing some difficulties with the first tool) and one proprietary tool are studied.</p><p>The results of this study indicate that open source database modeling CASE-tools are not ready to challenge proprietary tools. However software developed as open source usually evolve rapidly (compared to proprietary software) and a more mature open source tool could emerge in the near future.</p>

RES³T - the Rossendorf Expert System for Surface and Sorption Thermodynamics - is a digitized thermodynamic sorption database, implemented as a relational database. It is mineral-specific and can therefore also be used for additive models of more complex solid phases such as rocks or soils. An integrated user interface helps users to access selected mineral and sorption data, to extract internally consistent data sets for sorption modeling, and to export them into formats suitable for other modeling software. Data records comprise of mineral properties, specific surface area values, characteristics of surface binding sites and their protolysis, sorption ligand information, and surface complexation reactions. An extensive bibliography is also included, providing links not only to the above listed data items, but also to background information concerning surface complexation model theories, surface species evidence, and sorption experiment techniques. The RES³T database is intended for an international use. This requires high standards in availability, consistency and actuality. Therefore the authors of the database decided to couple the database onto an authorization tool.