Abstract: The aim of this paper is to investigate database access, realized in two ways.’ direct by OLEDB, and indirect via web service. The research is included analysis and development of differ- ent database access into web application. Database schemE3 fS ITIOdeIed and normdlfzed for the purpose of research. Necessary objects are discussed and sample is created using graphical visu- alization of the results. This paper provided an attempt to develop strategies for database access from web application. Key words: database, OLEDB, web service.
Abstract:The article presents an examination of test quality. This tast is for students’ knowledgeassessment and was carried out in two universities. The methods for estimation of the testreliability are briefly overviewed. By well grounded selection of the most appropriate method, thetest reliability is estimated. The discrimination index of each test item is calculated and analysed.Keywords:assessment, tests, discrimination index, reliability
“What do you get when you mix automata theory, mathematical logic
and database theory in a big bowl and stir it vigorously?
The answer is a foundation of XML.”
University of Edinburgh, Scotland
Abstract: This paper presents an approach to provide an access to the relational database’s components by means of metalanguage XML. For this purpose are suggested several of XML-constructions — elements and attribute structures for database presentation (tables, record, fields with different types of data, keys and others). The problems about the distinctions between relational database’s structure and semi-structured data (ssd) are discussed. An example schema of WEB-based system, in which the implementation of XML-standard leads to better balance in mutual connections between distant servers, operating systems and applications, is shown. This allows the choice of the most suitable software technologies for the different servers. In the presented experimental example is shown XML-model of SQL-query (wrapping model). Here is depicted the whole route from sending of query to receiving of appropriate results in browser and this process is traced in details. The article submits some basic examples showing the main features and advantages of this mechanism and its usage in practice. Key words: Extensible Markup Language (XML), Extensible Style Sheets Language for Transformations (XSLT), Simple API XML (SAX), Wireless Markup Language (WML), Syntax Analyzer (Parser), Uniform Resource Identifier (URI), ›ve//-formed X/\fL, DTD (Document Type Definition), W3C ( World Wide Web Consortium), URL (Uniform Resource Locator).
Abstract:Web usage mining has recent years played a major role in monitoring and analyzinguser behavior in web environment. This specialized field in data mining has helped a lot in givingvaluable insights in sense of fitting user information needs and helping in gradual improvement of aweb site. Adaptive web based systems, tend to adapt their content, based on user access andnavigation patterns. In order to perform the former, a thorough analysis of web server logs needs tobe performed. XML as a technology designed specifically to share data in web environments, canoffer great deal of flexibility in analyzing the web server logs for performing session reconstruction.In this paper, a suitability of XML and XSLT transformations has been tested and proven to bepromising for performing (XML-based) session reconstruction on large amount of web server logdata.“ A time-based heuristic model has been adopted to mapping user request activities into XMLsessions. Further, a so-called Session Identification using XML (SIOUX) algorithm is presentedfollowed by the description of the XSLT request aggregation strategy used. Finally, a case study ofa web site usage and the experimental results collected illustrate the suitability of our approach.Here, a substantial amount of web server logs has been collected and first cleaned fromunnecessary data, to then be submitted to our SIOIJX algorithm and the XSLT-based requestaggregation engine which maps each request to a unique session and hence reconstructs thesessions.
Keywords: Session Reconstruction, Adaptive Web Based Systems, XML, XSLT-Transformations
Abstract: Facial expressions (facial motions) were used to predict the original face image (OI) byusing two different search algoritms.” Full search and three step search. Motion vectors were de-termined between the face image, OI, and its moved version, (MI), at a point in time. By using these vectors a face image was reconstructed (RI). RI and OI were compared and it was seen thatthe full search algorithm has given a better similarity between OI and RI with respect to three stepsearch algorithm.
Keywords: Mofion vector, facial motion, block matching, full search, three step search.
Abstract:” Parallel algorithmic model for astronomical objects recognition is suggested in the paper.The analyses are aimed to find all astronomical objects in an image, to make photometric meas-urements and to build a catalog of the objects’ features that will be used in further astrometricand/or photometric analyses. The suggested parallel computational model is based on data de-composition and uses a combination of parallel algorithmic paradigms “master-slave” and SPMD.The experimental results on a cluster of symmetric multiprocessors and the communication profilesshow that the suggested parallel model scales well in respect to both the workload and the clustersize.
Abstract:” The first 3D computer animation model of the human face was created by Parke in 1972.Subsequent facial models and techniques for control facial animation have been developed overthe years. This paper is aimed at making a survey of methods and techniques for facial modelingand facial animation. This observation is based on analysis of major characteristics of the humanfaces as an object of modelling and animation. Special part of this material is oriented to methodsfor facial description together with methods for human head 3D modeling. The observation ofmethods for 3D photorealistic human head animation process control is included as well.
Key words:facial animation, facial model, character animation.
Abstract:” This paper presents a short analysis of the basic methods for knowledge representationin the systems with artificial intelligence. The pros and cons of every method have been reviewed.Reasoning capabilities of the methods are discussed, too. Based on the analysis made in the pa-per, a frame knowledge representation for the application has been chosen. The application itself isan analyzer of natural language sentences. An example illustrates the capabilities of the createdanalyzer, which is both problem- and language- independent.
Key words: knowledge representation, reasoning, first order predicate logic, frames, description logics
Abstract:In this paper we have suggested models of parallel computations for the knapsack opti-mization problem. The first model is based on simulated annealing metaheuristics and supportsparallel independent moves. The second suggested model implies distributed evolutionary compu-tations of structured populations with elite chromosome migration. Both models are verified on thebasis of flat MPI-based parallel program implementations on computer cluster. Parallelism profiling,scalability evaluation and analysis have been made scaling the problem size and the size of theparallel hardware. The quality of solution evaluation has been performed on the basis of 30 runs ofthe flat parallel program.
Abstract:The article examines the creation of appropriate models for design of surfaces thatcontains specific features. Real objects that have to be modeled in the 3D graphics systemspossess those features. This research is orientated to the graphics systems, requiring NURBSmodeling and enforcing the development of the new models of surfaces. Five of the nine surfacesthat are presented by one general equation and possess specific optical features are examined inthis report. On the base of the new models presented here plugins for one 3D graphics systemwere developed.