CompSysTech 2007: Rousse, Bulgaria
Boris Rachev, Angel Smrikarov, Dimo Dimov (Eds.): Proceedings of the 2007 International Conference on Computer Systems and Technologies, CompSysTech 2007, Rousse, Bulgaria, June 14-15, 2007. ACM 2007 ACM International Conference Proceeding Series 285 ISBN 978-954-9641-50-9
Plenary session
Plamen Vatchkov, Roumen Trifonov: National program for accelerated development of information society in Bulgaria. 1
Vesselin Iossifov, Theodor Totev, Arndt Tochatschek: Experiences in VoIP telephone network security policy at the University of Applied Sciences (FHTW) Berlin. 3
Computer systems
Pavel Zaykov: MIMD implementation with PicoBlaze microprocessor using MPI functions. 4
Mohammad Mehdi Hassani, Reza Berangi: Improving the COWLS algorithm for hardware software co-synthesis of wireless client-server systems using preference vectors and peak power information. 5
Ivan Simeonov, Hristo Kilifarev, Rajcho Ilarionov: Algorithmic realization of system for short-term weather forecasting. 6
Galina Istatkova: MFC-program SFFViewer intended for visualization of FAX files compressed to SFF format. 7
Computer technologies

Olegas Vasilecas, Diana Bugaite: An algorithm for the automatic transformation of ontology axioms into a rule model. 9
Plamenka Borovska, Milena Lazarova: Token-based adaptive load balancing for dynamically parallel computations on multicomputer platforms. 10
Evtim Peytchev, Mohamed Khalil: Optimizing the architecture of distributed shared memory systems in real time applicatons. 11
Ivaylo Atanassov: Simulation of dynamic priority calculation for multilevel priority queue. 12
Justas Trinkunas, Olegas Vasilecas: Building ontologies from relational databases using reverse engineering methods. 13
Plamenka Borovska, Milena Lazarova: Efficiency of parallel minimax algorithm for game tree search. 14
Plamenka Borovska: Efficiency of parallel metaheuristics for solving combinatorial problems. 15
Ivaylo Atanassov: An improvement of an approach for representation of tree structures in relational tables. 16

Svetlana Vasileva, Petar Milev, Borislav Stoyanov: Some models of a distributed database management system with data replication. 19
Atanaska Bosakova-Ardenska, Simeon Petrov, Naiden Vasilev: Implementation of parallel algorithm "conveyer processing" for images processing by filter 'mean'. 20
Nikolaj Cholakov: An approach for generating product catalogues in PDF format. 21
Daniel Denev, Georgy Totkov, Rorita Doneva, Nikolay Kasakliev: Experimental software solution for e-projects and e-documents management. 22
Application aspects of computer systems and technologies
Ismail Saritas, Nazmi Etik, Novruz Allahverdi, Ibrahim Unal Sert: Fuzzy expert system design for operating room air-condition control systems. 23

Hakan Isik, Ibrahim Unal Sert, Nuri Yavru, Novruz Allahverdi: Microcontroller based hypothermia system. 26
Antanas Zilinskas, Ausra Mackute-Varoneckiene: On search for optimal control in a problem of bio technology. 27
Tzvetomir Vassilev: Simulation of a deformable human body for virtual try-on. 28
Vera Marinova-Boncheva: Applying a data mining method for intrusion detection. 29
Nikolay Kakanakov, Mitko Shopov, Grisha Spasov, Hristo Hristev: Performance evaluation of switched ethernet as communication media in controller networks. 30
Veselina G. Jecheva, Evgeniya P. Nikolova: Decoding efficiency of the MAP and the max-log MAP algorithm as a strategy in anomaly-based intrusion detection systems. 31
Kemal Tütüncü, Novruz Allahverdi: Reverse modeling of a diesel engine performance by FCM and ANFIS. 32
Lachezar Yordanov, Miroslav Mihaylov, Vladimir Vitkov: Advanced microprocessor system with serial memory for harvester testing. 33
Ivan Krivý: Modeling and simulation of local epidemics. 34
Martin Tsenov: Example of communication between distributed network systems using web services. 35
Novruz Allahverdi, Serhat Torun, Ismail Saritas: Design of a fuzzy expert system for determination of coronary heart disease risk. 36
Eugene P. Genov: Digital watermarking of bitmap images. 37
Krasimir Trichkov, Elisaveta Trichkova, Elena Ivanova: Integrated information system based on web services. 38
Borislav Stoyanov, Borislav Bedzhev, Todor Tashev, Svetlana Vasileva: Application and statistic testing of the 5-adic summation-shrinking generator. 39
Romans Lukashenko, Vita Graudina, Janis Grundspenkis: Computer-based plagiarism detection methods and tools: an overview. 40
Rodica Mihalca, Adina Uta, Anca Andronescu, Iulian Întorsureanu: Principles for the realization of a graphical user interface for a tutorial system. 42
Plamen Manoilov: BCI control protocol pseudocode. 43
Jus Kocijan, Kristjan Azman, Alexandra Grancharova: The concept for Gaussian process model based system identification toolbox. 45
Anna Rozeva: Dimensional hierarchies: implementation in data warehouse logical scheme design. 46
Plamena Andreeva, Plamen Andreev, Maya Dimitrova, Petia Radeva: A refinement model with information granulation focused on difficult to distinguish cases. 47
Todor Tashev, Borislav Bedzhev, Zhaneta Tasheva: The generalized shrinking-multiplexing generator. 48
Marina Mladenova, Boyanka Zhelyazova: Competitive analysis of software solutions for business organizations. 49
P. Antonov, V. Antonova: Development of the attack against RSA with low public exponent and related messages. 50
Maya Dimitrova, Chavdar Roumenin, Siya Lozanova, Lubomir Lahchev, David Rotger, Petia Radeva: An interface system based on multimodal principle for cardiological diagnosis assistance. 51
Plamen Manoilov: Eye-blinking artefacts analysis. 52
Stela Sotirova, Lyubomir Sotirov: Computer-mathematical modeling of one class investment processes, based on optimal singular adaptive M3A1N computer observer: part 1. 53
Stela Sotirova, Lyubomir Sotirov: Computer-mathematical modeling of one class investment processes, based on optimal singular adaptive M3A1N computer observer: part 2. 54
Todor Tashev: The period of the LFSR based generalized shrinking-multiplexing generator. 55
Antonella Reitano: Shopping robots and e-commerce. 57
Dimiter Petrov, Dimiter Tsvetkov, Lyubomir Hristov: Approximate parameter estimation for mixtures of vector autoregressive stationary time series models. 58
Svetlana Stefanova: Parking access and revenue control system. 60
Mohammad Mehdi Hassani, Reza Berangi: An analytical model for evaluating utilization of TCP Reno. 61
Dimiter Tsvetkov, Lyubomir Hristov: Parameter estimation for finite mixtures of partial credit models. 62
Svetlin Petrov: An approach for MPLS recovery. 64
Bozhan Zhechev: Null spaces and Haar transform. 65
Rossen Iliev, Emil Bournaski, Leoneed Kirilov, Ivan Terziev: Computer modeling of watershed runoff with data for the Mesta river. 66
Milovan Kovacevic, Zoran Putnik, Zoran Budimac, Mirjana Ivanovic: An example of Oracle© WfMS upgrade for the purpose of document management. 67
Diana Grigorova, Nikolay Nikolov: Knowledge representation in systems with natural language interface. 68
Georgi Krastev, Margarita Teodosieva: Software for devices based on thermochron iButton™ technology. 69
Educational aspects of computer systems and technologies
Georgi Tuparov, Juliana Peneva, Petia Asenova, Stanislav Ivanov: Upskilling to object-oriented software development with UML. 70
Evgeniya Georgieva, Tsvetozar Georgiev: Methodology for mobile devices characteristics recognition. 71
Marco Alfano, Biagio Lenzitti: Searching the internet for learning materials through didactic indicators. 72
Markus Helfert, Howard Duncan: Evaluating information systems and business informatics curriculum. 73
Anelly Kremenska: Measuring student attitudes to computer assisted language learning. 74
Eduardas Bareisa, Eimutis Karciauskas, Eugenijus Macikenas, Kestutis Motiejunas: Research and development of teaching software engineering processes. 75
Alexey Alexeev: Concept for reconstruction of MUS portal into UESIE via creation of New University hardware modular integral system. 76
Stanislav Ivanov, Juliana Peneva: Distance learning courses in computer science: initiation and design. 77

Vladimir Mateev, Svilena Todorova, Angel Smrikarov: Test system in digital logic design virtual laboratory: tasks delivery. 80
Valentina Terzieva, Katia Todorova: Using MS reporting services to promote reuse of learning objects. 81
Janusz Jablonowski: A case study in introductory programming. 82
Douglas Harms: A brief comparison of technologies available in the computer science classroom. 83
Daniela Chudá: Visualization in education of theoretical computer science. 84
Yuri Hopteriev: An exercise practicing module on web programming electronic courses. 86
Anelly Kremenska: Technology enhanced language learning: student motivation in computer assisted language learning. 87



Korneliya Yordanova: Mobile learning and integration of advanced technologies in education. 92
Korneliya Yordanova: Integration of knowledge management and e-learning: common features. 94
Biometrics

Dimo Dimov, Alexander Marinov, Nadezhda Zlateva: CBIR approach to the recognition of a sign language alphabet. 96
Nikola Pavesic, Slobodan Ribaric, Benjamin Grad: Comparison of PCA -, MDF -, and RD-LDA - based feature extraction approaches for hand-based personal recognition. 97
Ognian Boumbarov, Strahil Sokolov, Georgi Gluhchev: Combined face recognition using wavelet packets and radial basis function neural network. 98
PhD students session

Tatyana Dimitrova, Lidiya Georgieva: Fuzzy representation for classification of basic bruise colours. 101
Zekie Shevked, Ludmil Dakovski: Learning and classification with prime implicants applied to medical data diagnosis. 103
Teodor Iliev: A study of turbo codes for UMTS third generation cellular standard. 105
Yordan Kalmukov: Analysis and experimental study of an algorithm for automatic assignment of reviewers to papers. 106
Dobrinka Petrova, Stoicho Stoichev: Protein structure similarity detection using alignment of secondary structure elements and their geometric properties. 107
Vanya Topalova: Critical transfer issues in QoS-C architecture models and session-based communication. 108
Simeon Tsvetanov: Workflow execution platforms interacting with network components over SNMP. 109
Katerina Gabrovska: Software modeling of stochastic climatic processes. 111
Dragos Datcu, Léon J. M. Rothkrantz: Facial expression recognition in still pictures and videos using active appearance models: a comparison approach. 112
Gamal Said, Angel Smrikarov, Todor Delikostov, Dimitar Stanchev: Computer system for research of the fuel economy of mobile machines. 113
Gamal Said, Angel Smrikarov, Tsvetozar Georgiev, Dimitar Stanchev: Results of the computer simulation of the fuel consumption of automobiles in acceleration process. 114
Teodor Iliev: Synthesize a simple algorithm to determine the weighted distance spectrum of turbo codes. 115
Martinus de Jongh, Marek J. Druzdzel, Léon J. M. Rothkrantz: Implementing and improving a method for non-invasive elicitation of probabilities for Bayesian networks. 117
Alexander Efremov: Real-time estimation of multivariate dynamic time-varying market representation. 119
Plamen Paskalev, Anatoliy Antonov: Increasing the performance of an application for duplication detection. 120
Sarunas Packevicius, Andrej Usaniov, Eduardas Bareisa: Software testing using imprecise OCL constraints as oracles. 121
Anelia Popandreeva: Object-oriented analysis and design using UML of a test "Rotation with sample". 123



