Abstract Subject analysis is one of the most important activities carried out by information scientists, librarians, cataloguers and indexers. Determining the intellectual content of a document, and then assigning proper subject headings or descriptors to it, is crucial for the organization of information and knowledge. Libraries and information centers may hire a large number of cataloguers and indexers to perform these activities, increasing the costs of information processing and organization. For these reasons, and in order to lower the time and costs involved in these tasks, there have been many attempts for performing them without human intervention; that is, with the aid of a computer. The objective of this paper is, then, to present a methodology for the automated assignment of descriptors to documents, more specifically, to journal articles which contain an abstract and have been select for inclusion in a commercial database

Abstract For most watermark applications, it is often desired to retrieve the embedded information without access to the host data, which is a so-called blind watermarking technique. Most of the available blind watermarking schemes either suffer significantly from host data interference or require expense of storage. Therefore, a simple and effective blind watermarking scheme is expected. In this paper, we present a kind of blind watermarking technique, which is based on relative modulation of the pixel value/DCT coefficient value by referring to its estimated one. This technique entirely eliminates the effect of host data interference, thus having considerable advantage over previous counterpart watermarking schemes. In addition, our DCT AC-estimation-based technique reveals extraordinary robustness against numerical attacks, such as noise addition, filtering and JPEG compression.

Abstract In this article we report on the effort of the university library of the Vienna University of Economics and Business Administration to integrate a digital library component for research documents authored at the university into the existing library infrastructure. Setting up a digital library has become a relatively easy task using the current data base technology and the components and tools freely available. However, to integrate such a digital library into existing library systems and to adapt existing document acquisition work-flows in the organization are non-trivial tasks. We use a research frame work to identify the key players in this change process and to analyze their incentive structures. Then we describe the light-weight integration approach employed by our university and show how it provides incentives to the key players and at the same time requires only minimal adaptation of the organization in terms of changing existing work-flows. Our experience suggests that this light-weight integration offers a cost efficient and low risk intermediate step towards switching to exclusive digital document acquisition

Abstract It is very important for online game providers to develop games, which will sustain high loyalty of their customers. To our knowledge, there have been little studies on what they have to take into account in order to develop such games, especially RPGs (Role Playing Games). Therefore, we attempted to build a model that can be used to predict whether a new online RPG will make players loyal to it or not. First, we used Delphi Technique to find variables that have an effect on the customer loyalty. Then, we conducted a survey asking RPG gamers to evaluate most popular 15 RPGs in terms of those variables. Using the survey data, we did factor analysis to identify factors among those variables and multiple regression analysis to compute the level of each factor’s influence to customer loyalty. Lastly, we used the same data to generate a decision tree, a prediction model that can be used to predict the success of a new RPG. The result of this research is expected to give useful implications to both RPG developers and RPG evaluators

Abstract This paper is a technical report about the LAURIN Interface Suite. It covers architecture and platforms as well as the most important tools of the software package