SVIBOR - Papers - project code: 2-06-221

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Published papers on project 2-06-221


Quoted papers: 2
Other papers: 59
Total: 61


  1. Type of paper: Paper in book

    Title: Process instrumentation system model for fault detection and analysis

    Authors:
    Bogunović, Nikola (4276)
    Editors
    Bogunović, Nikola (4276)
    Jović, Franjo
    Publisher: Hrvatsko društvo za sustave
    ISBN: 920731032
    Year: 1992
    Pages: from 31 to 36
    Number of references: 6
    Language: hrvatski
    Summary: The paper addresses methods of knowledge acquisition andreasoning in an intelligent instrumentation systems for faultdetection and analysis, dedicated to industrial process controlenvironments. The instrumentation systems is based on knowledge of industrial process structure and functions, and onheuristics of diagnosis through multilevel causal models. An interaction of structural and functional model (passivecomponent) with reasoning process (active component) is shown.Particular attention is paid to programming paradigm whichenables natural hierarchical decomposition of complex multilevelindustrial systems.
    Keywords: fault detection, instrumentation, process instrumentation

  2. Type of paper: Paper in book

    Title: Autocalibration of Measurement System by means of the Primary References

    Authors:
    Marić, Ivan (82830)
    Editors
    Božičević, Juraj
    Publisher: Hrvatsko društvo za sustave
    ISBN: 920731032
    Year: 1992
    Pages: from 37 to 42
    Number of references: 7
    Language: hrvatski
    Summary: Autocalibration of the measurement systems by means of the primary references is described as well as the correspondingprocedures for the derivation of the correction functions. Polynomial and piecewise-linear approximations of the correction functions are derived, based upon the autocalibration of the measurement system characteristic by Nreference values. Advantages and disadvantages of thisprocedure, compared to the autocalibration by means ofsecondary references are pointed out. A model of an adaptivemeasurement system comprising autocalibration is described.
    Keywords: autocalibration, primary references, secondary references, polynomial approximation, correction functions

  3. Type of paper: Paper in journal

    Title: On the functionality and structure of the intelligent instrumentation systems

    Authors:
    Bogunović, Nikola (4276)
    Journal: INFORMATICA
    Number: 1
    ISSN: 0350-5596
    Volume: 16
    Year: 1992
    Pages: from 42 to 48
    Number of references: 10
    Language: engleski
    Summary: A rational approach to the functionality and structure of theintelligent instrumentation systems, dedicated to industrialprocess monitoring and control, and fault diagnosis applications,is presented. The functional model is distinguished from thestructural model. Functions are represented by interrelatedmodules that support multiple levels of abstractions. Structuralmodel is described through hierarchy of layered components.Particular attention is paid to process model building procedures, and to knowledge representation and reasoning techniques. While model building has settled around techniques that employ object-oriented and windowing methodology, knowledgerepresentation procedures follow very diverse approaches.
    Keywords: artificial intelligence, instrumentation, knowledge-based systems, modelling

  4. Type of paper: Paper in journal

    Title: Inversion of integer matrices in residue number systems

    Authors:
    Gamberger, Dragan (13026)
    Journal: IEE Proceedings-E
    Number: 5
    ISSN: 0143-7062
    Volume: 139
    Year: 1992
    Pages: from 465 to 468
    Number of references: 7
    Language: engleski
    Summary: The presented algorithm makes use of the recently introduced incompletely specified residue number system. This system enables the operations necessary in the inversion process to be donefast, completely in parallel for different moduli, even ifdivisors and some system moduli are not relatively prime. Thealgorithm guarantees the result correctness and the onlycondition for its applicability is that the determinant of the starting matrix is not a multiple of the product of allsystem moduli.
    Keywords: matrix algebra, general integer computations, incompletely specified residue number system

  5. Type of paper: Paper in journal

    Title: Modelling biodegradation by an example-based learning system

    Authors:
    Gamberger, Dragan (13026)
    Sekušak, Sanja
    Sabljić, Aleksandar
    Journal: INFORMATICA
    Number: 2
    ISSN: 0350-5596
    Volume: 17
    Year: 1993
    Pages: from 157 to 166
    Number of references: 14
    Language: engleski
    Summary: In the paper a novel rule generation system for learning from examples and its application for modelling biodegradation of chemicals are presented. Two rules for biodegradationprediction are generated: the first one for all binarydescriptors and the learning set of 48 examples and the secondone with some descriptors extended to integer values and thelearning set of 161 examples. The prediction results of testexamples by the generated rules are compared with the measuredvalues and the results of two known prediction models.
    Keywords: inductive learning, biodegradation

  6. Type of paper: Paper in journal

    Title: Object oriented approach to design of interactive intelligent instrumentation user interface

    Authors:
    Bogunović, Nikola (4276)
    Tulač, Sanjin
    Journal: AUTOMATIKA
    Number: 34
    ISSN: 0005-1144
    Volume: 34
    Year: 1993
    Pages: from 143 to 146
    Number of references: 5
    Language: engleski
    Summary: The guidelines for interactive user interface design, in anintelligent instrumentation system, are based on directmanipulation of graphic objects. Standard structured graphicspackages, which are currently extensively used in the design ofuser interfaces, are often large and monolithic, with many, but difficult to extend, built-in functions. Editing and manipulatingthe display list is hard, particularly when its elements arerepresented procedurally. An object oriented approach, through programming languages which support encapsulation and inheritance, and runtime binding of operations to objects, offersolutions to the problems of standard structured graphicspackages. The paper describes mechanisms for implementing twodimensional graphic objects, which are intrinsic to aninteractive user interface. Objects can be defined staticallyby subclassing, or dynamically by creating instances of existingclasses.
    Keywords: graphic user interface, intelligent instrumentation, object oriented systems

  7. Type of paper: Paper in journal

    Title: Autocalibration Procedures in Computer Controlled Measurements

    Authors:
    Marić, Ivan (82830)
    Journal: Microcomputer Applications
    Number: 3
    ISSN: 0820-0750
    Volume: 11
    Year: 1992
    Pages: from 102 to 107
    Number of references: 9
    Language: engleski
    Summary: Autocalibration of a computer-controlled measurement system, based on N reference points, is described. Several measurement system models and measurement procedures suitable formeasurements of slow varying analog quantities, are developed, and the corresponding approximation of thecorrection functions are derived. A discrete optimizationalgorithm is developed, yielding the optimum total number and the distribution of reference values for the given measurement system calibration characteristic in tabular form. Themeasurement system periodically performs automatic calibrationof the measurement system characteristic by measuring certainreference values. The simulation of measurement procedures on adigital computer shows a significant reduction of measurementerror when using autocalibration by N reference points instead of2-point autocalibration, which is equivalent to the well-knownzero and gain correction procedures. N-point autocalibrationenables achievement of a high measurement accuracy by usinglower-performance analog circuits. The only requirement is tohave highly stable reference values.
    Keywords: autocalibration, measurement system, reference values

  8. Type of paper: Paper in journal

    Title: Physical limitations of the period (frequency) for repetitive automatic digital correction of measurement data at specified accuracy

    Authors:
    Mutabžija, Ranko (32891)
    Journal: Measurement, IMEKO Journal
    Number: 2
    ISSN: 0263-2241
    Volume: 9
    Year: 1991
    Pages: from 56 to 60
    Number of references: 12
    Language: engleski
    Summary: Analytical and numerical analysis is presented for the automaticrepetitive digital correction of the measurement data at thespecified accuracy. The fundamental requirement for correction isanalytically derived. Thermal and secular effects on the gainchange during the correction period are determined in generalterms. The maximal permissible correction period and the minimalcorrection frequency are derived for the assumed correctionsystem model. Operating the measurement system within this periodensures that the correction of the measurement data for themeasurement system total gain thermal and temporal drifts isexecuted before the measurement error becomes greater than theprescribed accuracy. The quantitative analysis of the maximalperiod and the minimal frequency of the correction based onnumerical experimental data is done for wide range of theoperating conditions and presented in tabular form.
    Keywords: measurement, data, digital correction, repetitive, period, frequency

  9. Type of paper: Paper in journal

    Title: Object programming in C++

    Authors:
    Tulač, Sanjin
    Journal: BUG
    Number: 25
    ISSN: 1330-0318
    Volume: 1
    Year: 1994
    Pages: from 91 to 93
    Language: hrvatski
    Summary: In this professional paper an object oriented programming paradigm is described. Formal theoretical base is illustrated with examples written in C++.
    Keywords: programming, object oriented programming, C++

  10. Type of paper: Paper in journal

    Title: Features of the Cylindrical Electrodes Burning Through by the Destructive HF Induction Heating

    Authors:
    Mutabžija, Ranko (32891)
    Journal: Elektrotehnika
    Number: 1-2
    ISSN: 0013-5844
    Volume: 37
    Year: 1994
    Pages: from 3 to 6
    Number of references: 6
    Language: hrvatski
    Summary: It is ascertained that the phenomenon of the cylindrical electrodes burn through reduces to cumulative melting along the generation of the cylinder. Derived independence of the heating power pro electrode volume unit upon the burn through depth is sufficient condition for melting process persistence. The burn through course depends on the applied HF heating power, sort of the metal used for electrode creation and the disposition of the weak sections along the hollow cylinder circumference.
    Keywords: induction heating, destructive heating, burning through, cylindrical electrodes, process persistence

  11. Type of paper: Paper in proceedings

    Title: Knowledge Representation in a Database Environment for Intelligent Instrumentation Application

    Authors:
    Bogunović, Nikola (4276)
    Editors
    Hamza, M. H.
    Proceedings title: Artificial Intelligence Applications and Neural Networks
    Language: engleski
    Place: Zurich, Switzerland
    Year: 1991
    ISBN/ISSN: 0-88986-153-6
    Pages: from 141 to 144
    Meeting: IASTED Internatioanl Conference on Artificial Intelligence Applications and Neural Networks
    Held: from 07/01/91 to 06/03/91
    Summary: Based on the proposed intelligent instrumentation system model,the paper evaluates two embedded knowledge representationformalisms appropriate for complex measurement and control applications. A traditional method, which adds a detached and distinctive knowledge base in a logic program form to an existingdatabase of an instrumentation system, is compared to a knowledge representation form embodied in the database itself. Itis shown that, under the closed world assumption, knowledge embodied in the database is not incomplete, and inferenceprocess is reduced to parsing, calculation, and querying, whichare all intrinsic database management operations. The mainadvantage of such an approach lies in common and familiar userinterface, much faster and thus less expensive system design,but the semantic interpretation of a database records, and itsknowledge expressiveness, is bounded.
    Keywords: data base, intelligent instrumentation, knowledge base, knowledge representation

  12. Type of paper: Paper in proceedings

    Title: Intrisically safe systems with embedded microcomputers

    Authors:
    Gamberger, Dragan (13026)
    Marić, Ivan (82830)
    Matasović, Miroslav
    Proceedings title: MIPRO, Savjetovanje o mikroračunalima u sistemima procesnog upravljanja
    Language: hrvatski
    Place: Rijeka
    Year: 1991
    ISBN/ISSN: 86-81607-07-3
    Pages: from 233 to 238
    Held: from 05/20/91 to 05/24/91
    Summary: Some problems of microcomputer organization, componentsselection, and power supply design for intrinsically safe systemswith embedded computers are presented. The methods of powerrequirements reduction and data retention in the power downperiod are analyzed. A microcomputer organization applicable insmall embedded computer systems, including an accumulator and abattery backed-up nonvolatile RAM, is suggested.
    Keywords: microcomputers, intrinsically safe systems

  13. Type of paper: Paper in proceedings

    Title: New aproach to integer division in residue number system

    Authors:
    Gamberger, Dragan (13026)
    Editors
    Kornerup, Peter
    Matula, David
    Proceedings title: 10th IEEE Symposium on Computer Arithmetic
    Language: engleski
    Place: Grenoble, Francuska
    Year: 1991
    ISBN/ISSN: 0-8186-9151-4
    Pages: from 84 to 91
    Meeting: 10th IEEE Symposium on Computer Arithmetic
    Held: from 06/26/91 to 06/28/91
    Summary: A new division algorithm substantially different from the knownones, and especially appropriate for the Residue Number Systems(RNS), is presented. t makes use of the fact that multiplicativeinverse element of a divisor, that is relatively prime to systemmoduli, can be easily determined in the RNS. The number of itsiterations depends only on the magnitude of the divisor and themoduli of the system. The problems in the algorithm realizationare analyzed in detail and a complete solution using the incompletely specified RNS is described.
    Keywords: residue number system, division algorithms

  14. Type of paper: Paper in proceedings

    Title: Learning from examples based on logical minimization

    Authors:
    Gamberger, Dragan (13026)
    Editors
    Bogunović, Nikola (4276)
    Jović, Franjo
    Proceedings title: Umjetna inteligencija pri mjerenju i vođenju
    Language: hrvatski
    Place: Zagreb
    Year: 1992
    ISBN/ISSN: 920731032
    Pages: from 119 to 124
    Meeting: Umjetna inteligencija pri mjerenju i vođenju
    Summary: In the paper the problem of learning in systems with discrete inputs and outputs based on restricted number of examples is discussed. The aim of the learning is to find rules that will enable decision making also for the input combinations that are not included in the initial set of examples. In the paper it is supposed that among a great number of possible rules, correct is the one with the smallest number of logical conditions and then an algorithm for the generation of such rule and some obtained results are presented.
    Keywords: example based learning, logic minimization, rule generation

  15. Type of paper: Paper in proceedings

    Title: Object oriented programming library of network functions in a distributed instrumentation system

    Authors:
    Tulač, Sanjin
    Bogunović, Nikola (4276)
    Editors
    Ribarić, Slobodan
    Proceedings title: Zbornik radova KoREMA 38(1993), 1. svezak
    Language: engleski
    Place: Zagreb
    Year: 1993
    ISBN/ISSN: 953-6037-00-9
    Pages: from 212 to 215
    Meeting: 38. Međunarodni godišnji skup KoREMA
    Held: from 04/26/93 to 04/28/93
    Summary: The paper describes a new, object oriented library of networkfunctions, with the same hierarchical class structure forimplementation of the "server" and the "client" part. Theapplicatbility of these new functions has been shown through theimplementation of "xtalk" program, i.e. the standard "talk"program based on X Window System platform. The OSF/Motif basiclibrary of functions has been used for the user interfaceimplementation.
    Keywords: object-oriented, C++, computer networks, TCP/IP, Berkeley sockets, talk

  16. Type of paper: Paper in proceedings

    Title: WorkMates: TCP/IP based distributed application manager

    Authors:
    Ilakovac, Tin
    Tulač, Sanjin
    Editors
    Čerić, Vlatko
    Hljuz Dobrić, Vesna
    Proceedings title: Proc. of the 15th International Conference on INFORMATION TECHNOLOGY INTERFACES
    Language: engleski
    Place: Zagreb
    Year: 1993
    ISBN/ISSN: 1330-1012
    Pages: from 263 to 268
    Meeting: 15th International Conference on INFORMATION TECHNOLOGY INTERFACES
    Held: from 06/15/93 to 06/18/93
    Summary: Berkeley sockets can be the solution to the problem of developingdistributed applications written in different languages andrunning on different host machines under various operatingsystems. The presented work uses TCP/IP to create a network ofnodes for a distributed application. The process is automatedthrough the use of a specific protocol.
    Keywords: distributed computing, computer networks, TCP/IP

  17. Type of paper: Paper in proceedings

    Title: Knowledge representation in an intelligent instrumentation diagnostic system

    Authors:
    Bogunović, Nikola (4276)
    Editors
    Ribarić, Slobodan
    Proceedings title: MIPRO 92, Zbornik radova: Mikroračunala u inteligentnim informacijskim sustavima
    Language: hrvatski
    Place: Rijeka
    Year: 1992
    ISBN/ISSN: 86-385-0115-3
    Pages: from 335 to 340
    Meeting: MIPRO 92, Mikroračunala u inteligentnim informacijskim sustavima
    Held: from 05/18/92 to 05/21/91
    Summary: The paper presents knowledge representation and reasoning schemesin an intelligent instrumentation system, dedicated for faultdetection and diagnosis in a complex industrial process controlenvironment. The analysis is based on the functional andstructural model of the instrumentation system, where hierarchically layered components, integrated in the commonframework, support various levels of abstractions. Knowledge representation techniques are considered in the context ofcompromising the expressiveness and speed of computation.
    Keywords: diagnostics, intelligent instrumentation, knowledge representation, process instrumentation

  18. Type of paper: Paper in proceedings

    Title: Object oriented approach to design of interactive intelligent instrumentation user interface

    Authors:
    Bogunović, Nikola (4276)
    Tulač, Sanjin
    Editors
    Ribarić, Slobodan
    Proceedings title: Proceedings of 38th International Annual Conference KoREMA
    Language: engleski
    Place: Zagreb
    Year: 1993
    ISBN/ISSN: 953-6037-00-9
    Pages: from 208 to 211
    Meeting: 38. Međunarodni godišnji skup KoREMA
    Held: from 04/26/93 to 04/28/93
    Summary: The guidelines for interactive user interface design, in anintelligent instrumentation system, are based on directmanipulation of graphic objects. Standard structured graphics packages, which are currently extensively used in the design ofuser interfaces, are often large and monolithic, with many, but difficult to extend, built-in functions. Editing and manipulating the display list is hard, particularly when itselements are represented procedurally. An object orientedapproach, through programming languages which supportencapsulation and inheritance, and runtime binding of operationsto objects, offer solutions to the problems of standardstructured graphics packages. The paper describes mechanismsfor implementing two-dimensional graphic objects, which areintrinsic to an interactive user interface. Objects can bedefined statically by subclassing, or dynamically by creatinginstances of existing classes.
    Keywords: graphic user interface, intelligent instrumentation, object oriented systems

  19. Type of paper: Paper in proceedings

    Title: Distance criterion of voice signal scrambling in a distributed computerised systems

    Authors:
    Valožić, Predrag (187840)
    Proceedings title: Zbornik radova 38. međunarodnog godišnjeg skupa KoREMA
    Language: hrvatski
    Place: Zagreb
    Year: 1993
    ISBN/ISSN: 953-6037-00-9
    Pages: from 523 to 535
    Meeting: 38. Međunarodni godišnji skup KoREMA
    Held: from 04/26/93 to 04/28/93
    Summary: Distributed measurement and control systems often demandprotected voice information transmission. Time segmentspermutation is a standard technique for scrambilng the voicesignal. Legability of scrambled voice signal, as a subjectivecategory measure, is not the same for all possible permutationsof the finite signal time segments. The paper formulates distancecriterion, as an indicator of dissimilarity between a permutatedsegments signal, and the original signal (with basic or zeropermutation). Distribution of permutations, relative to thedefined distance criterion, is analyzed and experimentallyverified on an implemented computerised real-time signalscrambler simulator.
    Keywords: instrumentation, signal processing, signal scrambling

  20. Type of paper: Paper in proceedings

    Title: Hierarchically compounded objects of virtual instrumentation

    Authors:
    Bogunović, Nikola (4276)
    Editors
    Ribarić, Slobodan
    Proceedings title: MIPRO 93, Zbornik radova: Mikroračunala u inteligentnim informacijskim sustavima
    Language: hrvatski
    Place: Rijeka
    Year: 1993
    ISBN/ISSN: 953-6042-00-2
    Pages: from 130 to 135
    Meeting: MIPRO 93, Mikroračunala u inteligentnim informacijskim sustavima
    Held: from 05/24/93 to 05/27/93
    Summary: Open, modular, distributed instrumentation systems incorporatemultiple sets of real and virtual building blocks, which synergistically enable unrestrained composition of measurement functions in the system. The set of virtual elements is composedof graphical objects, which provide for intelligent, dynamic, online decomposition and reconfiguration of visualisation of the measurement process. The paper compares graphical objects from Widget and InterViews sets, and specifies their hierarchical structure. Using the object oriented paradigm, thepaper formulates mappings of set elements to encapsulated datatypes, which provide the possibility of multiple instantiationand behavioural sharing through various inheritance mechanisms.
    Keywords: graphical user interface, intelligent instrumentation, object oriented systems, virtual instrumentation

  21. Type of paper: Paper in proceedings

    Title: Steam Flow Computation Algorithm Using Measuring Orifices

    Authors:
    Marić, Ivan (82830)
    Žutić, Ivan
    Editors
    Matijević, Vladimir
    Proceedings title: Savjetovanje o mikroračunalima u sistemima procesnog upravljanja
    Language: hrvatski
    Place: Rijeka
    Year: 1991
    ISBN/ISSN: 86-81607-07-3
    Pages: from 2154 to 2159
    Meeting: MIPRO'91, Savjetovanje o mikroračunalima u sistemima procesnog upravljanja
    Held: from 05/20/94 to 05/24/94
    Summary: The paper describes the algorithm for steam flow computationusing orifice as a primary metering device. Based on the instantaneous values of difference pressure, static pressure and temperature, the thermodynamic values of steam, such as density, viscosity, entalphy, and isentropic exponent, are calculated, and the range of steam is examined. The flow of steam is calculated in accordance with ISO 5167 Standard , for all types of measuring orifices. This algorithm is implemented in the steam flow computer that has been developed in Ruđer Bošković Institute. The flow computer achieves a high measurement accuracy by performing N-point self-calibration of the analog subsystem periodically.
    Keywords: flow algorithm, viscosity, enthalpy, isentropic exponent, self-calibration

  22. Type of paper: Paper in proceedings

    Title: Two level laser system's resonant signal detection dynamics adjustment for optimal S/N ratio by time averaging method

    Authors:
    Mutabžija, Ranko (32891)
    Editors
    Kegong, Zhao
    Xiaoren, Yang
    Proceedings title: Digest of the 12th Triennal World Congress of the IMEKO
    Language: engleski
    Place: Peking, NR Kina
    Year: 1991
    Pages: from 105 to 106
    Meeting: 12th Triennal World Congress of the IMEKO
    Held: from 09/05/91 to 09/10/91
    Summary: Optimal signal to noise ratio is determined starting from therelative spectral distributions. The spectrum of the signal isadjusted by changing the dynamics of the particular measurementprocess. For two level laser transitions the dynamics of theemission (or absorption) is in semiclassical representationdescribed by the analogue to the Bloch's equations for dielectricmedia. The solution of this system of differential equations forthe appropriate irradiation spectrum sweep supplies Lorentzianresonant line. For passages through the resonant line by fastirradiation sweeps the natural Lorentzian response is deformed.The determination of the optimally deformed resonant line peakand its full width, for interesting range of normalizedirradiation frequency sweeps and normalized saturations, requiresextensive numerical solution of the differential equationspecifying system dynamics.
    Keywords: signal, noise, ratio, determination, mesurement, process, dynamics, optimization

  23. Type of paper: Paper in proceedings

    Title: Spiritual regenaration of the Croatian science and the illustrious character of system science

    Authors:
    Mutabžija, Ranko (32891)
    Editors
    Božičević, Juraj
    Proceedings title: Sustavsko mišljenje
    Language: hrvatski
    Place: Zagreb
    Year: 1992
    Pages: from 31 to 41
    Meeting: Sustavsko mišljenje
    Held: from 03/15/92 to 03/15/92
    Summary: The spiritual regeneration of the Croatian science is based onclassical spiritual values, representing the offspring of theChristian, especially Catholic tradition. The scriptures arepresented, directly connected with the spiritual renewal in thescientific creation domain, taken directly from the Holy Bible.After general consideration, the scientific creation problem isformulated as concieved by the most prominent scientists. It isasserted, that the system approach greatly enreaches, widens andelevates the level of any particular scientific problemconsideration. Using formal conclusion making by computers, todaysome try to reduce thinking to artificial logic conclusion makingwithin fixed conception system. As an example of extremelysofisticated and abstract system-approach, modern cosmologicaltheories are presented, describing the development of the Cosmosas a whole.
    Keywords: spiritual, regeneration, Croatian, science, systems, approach, scientific, creation

  24. Type of paper: Paper in proceedings

    Title: Basic limitations of the informatic systems architecture

    Authors:
    Mutabžija, Ranko (32891)
    Editors
    Bogunović, Nikola (4276)
    Jović, Franjo
    Proceedings title: Umjetna inteligencija pri mjerenju i vođenju
    Language: hrvatski
    Place: Zagreb
    Year: 1992
    ISBN/ISSN: 920731032
    Pages: from 1 to 5
    Meeting: Umjetna inteligencija pri mjerenju i vođenju
    Summary: The limitations of the informatic systems architecture, which areabsolute by its nature are presented. These depend uponfundamental physical laws and therefore on the fundamentalphysical constants, too. The limitations by thermal noise ininformatic systems set up by classical thermodynamics reduce thesmallest observable amount of negentropy to the order ofBoltzman's constant. The spontaneous fluctuations of theconjugate variables in nonrelativistic quantum theory and atabsolute temperature zero, according to the Heisenberg'suncertainty relations, are of the Planck's constant order. Bymeans of the Grand Unification Theory, the ultimate limits of thebasic physical units, known as Planck's units are derived. Theultimate limitations of the informatic systems digital capacityis set up by the total quantity of the matter at disposal, andsupposes use of its quantum and relativistic properties in theBremermann's sense.
    Keywords: informatic, limitations, thermic, quantum, relativistic, Bremermanns

  25. Type of paper: Paper in proceedings

    Title: Basic physical limitations of the general systems informatic architecture

    Authors:
    Mutabžija, Ranko (32891)
    Editors
    Ghosal, A.
    Proceedings title: Digest of the 9th WOSC Congress
    Language: engleski
    Place: New Delhi, Indija
    Year: 1993
    Pages: from 78 to 78
    Meeting: 9th World Organization of Systems and Cybernetics Congress
    Held: from 01/18/93 to 01/23/93
    Summary: The limitations of the general systems, which are absolute by itsnature, are discussed. They depend upon fundamental physical lawsand therefore on the fundamental physical constants, too. Thelimitations by thermal noise in general systems set up byclassical thermodynamics reduce to the smallest observable amountof the negentropy which is of the order of Boltzman's constant.The spontaneous fluctuations of the conjugate variables innonrelativistic quantum theory occurring and at absolutetemperature zero, according to the Heisenberg's uncertaintyrelations are of the Planck's constant order. For extreme cosmicconditions, by means of GUT, the ultimate limits in thequantization of the basic physical units are derived. Theultimate limitations of the informatic capacity of generalsystems is set up by the quantity of the applied matter andsupposes use of its quantum and relativistic properties in theBremermann's sense.
    Keywords: limitations, general, systems, absolute, thermic, quantum, relativistic, Bremermanns

  26. Type of paper: Paper in proceedings

    Title: Symmetry in Deductive and Inductive Inferencing

    Authors:
    Bogunović, Nikola (4276)
    Editors
    Ribarić, Slobodan
    Proceedings title: Mikroračunala u inteligentnim informacijskim sustavima MIPRO ž94
    Language: hrvatski
    Place: Rijeka
    Year: 1994
    ISBN/ISSN: 953-6042-01-0
    Pages: from 3.18 to 3.23
    Meeting: MIPRO ž94, Mikroračunala u inteligentnim informacijskim sustavima
    Held: from 05/23/94 to 05/26/94
    Summary: One of the fundamental problems in expert systems development, which are founded on deductive inferencing within the set of logical clauses, are knowledge acquisition and its representation by rules. Clauses, having the structure of rules, can be generated by induction from the set of characteristic examples which describe the investigated concept. The paper compares the deductive inferencing, as a specialisation process of general logic clauses, with inductive production of rules, as a generalisation of individual examples which describe one or more concepts. It is shown that the techniques are symetrical with respect to variable bindings and unification of atomic formulas. While the deductive inferencing is based on well known and proven resolution theorem, its inversion in inductive inferencing is not yet standardised. The paper gives some guidelines towards the uniform treatment of deductive and inductive inferencing.
    Keywords: automated inferencing, expert systems, logic, theorem provers

  27. Type of paper: Paper in proceedings

    Title: Avoiding infinite loops in rule-based systems with backward chaining

    Authors:
    Bogunović, Nikola (4276)
    Editors
    Ribarić, Slobodan
    Proceedings title: Microcomputers in intelligent information systems MIPRO ž95
    Language: engleski
    Place: Rijeka
    Year: 1995
    ISBN/ISSN: 953-6042-17-7
    Pages: from 3.36 to 3.42
    Meeting: MIPRO 95, Microcomputers in intelligent information systems
    Held: from 05/22/95 to 05/26/95
    Summary: A subset of rule-based expert systems may be viewed as a logic program, consisting of a finite set of normalised logic clauses. Query evaluation, or backward chaining strategy of such programs, is a procedure that searches for a path from a given node to some arbitrary node in the corresponding graph. Hence, there may be some paths that are infinite in length. The paper compares two methods that avoid infinite loops in logic programs. Based on the notion of tabling in deterministic languages, the paper examines a similar method in a non-deterministic computational environment of logic programming. The tabling algorithm is then compared to the Magic transformation method, based on source program transformation. Two methods are analysed with respect to time and space complexity.
    Keywords: logic programming, PROLOG, recursions

  28. Type of paper: Paper in proceedings

    Title: A Minimization Approach to Propositional Inductive Learning

    Authors:
    Gamberger, Dragan (13026)
    Editors
    Lavrac, Nada
    Wrobel, Stefan
    Proceedings title: Proceedings of 8th Conference on Machine Learning
    Language: engleski
    Place: Heraklion, Grcka
    Year: 1995
    ISBN/ISSN: 3-540-59286-5
    Pages: from 151 to 160
    Meeting: 8th Conference on Machine Learning
    Held: from 04/25/95 to 04/27/95
    Summary: An approach to the problem of propositional inductive learning of if-then-else rules, different from the commonly used ones, is presented in the paper. Main differences are: literal selection process that searches for the smallest set of literals so that the completely correct rule for all learning examples can be constructed and the nonnormal form of the generated rules built by the search for necessary and sufficient conditions of example classes. It is also presented how iterative application of the literal selection process can solve the problem of learning from noisy domains by appropriate exclusion of some learning examples. The results of application of the system that includes described algorithms on a few publicly available domains are discussed.
    Keywords: machine learning, induction, rule, literal

  29. Type of paper: Paper in proceedings

    Title: An Approach to Dimensionality Reduction in Learning from Deductive Databases

    Authors:
    Lavrac, Nada
    Gamberger, Dragan (13026)
    Dzeroski, Saso
    Editors
    Luc, de Raedt
    Proceedings title: Proceedings of the 5th International Workshop on Inductive Logic Programming
    Language: engleski
    Place: Leuven, Belgija
    Year: 1995
    Pages: from 337 to 354
    Meeting: 5th International Workshop on Inductive Logic Programming
    Held: from 09/04/95 to 09/06/95
    Summary: The paper discusses a possibility of using an algorithm for reducing the number of literals/features to be considered in learning. The selected approach is used within the inductive logic programming learning setting, using the LINUS/DINUS transformation approach that enables learning in deductive databases. The paper elaborates a model-based view on the transformed learning setting and reports on first encouraging results in dimensionality reduction, illustrated on a simple ILP problem.
    Keywords: inductive logic programming, deductive databases, inductive learning, literal, example

  30. Type of paper: Paper in proceedings

    Title: Insufficiency of first order logic as a database query language

    Authors:
    Bogunović, Nikola (4276)
    Proceedings title: 5th SONT - 5th International Symposium on New Technologies
    Language: engleski
    Place: Zagreb
    Year: 1995
    ISBN/ISSN: 953-6228-00-9
    Pages: from 219 to 222
    Meeting: 5th SONT - 5th International Symposium on New Technologies
    Held: from 09/25/95 to 09/27/95
    Summary: The paper explores "logic+control" programming paradigm, applied to a relational domain. Even though it looks natural to utilize first order logic as a database query language, the paper reveals some shortcomings of such an approach. Particular attention is paid to: a) the semantics of negation and other non-monotonic reasoning notions, b) infinite or time consuming recursions, c) embedded PROLOG data structures and control mechanisms. The dual interpretation of logic programs (procedural and declarative) provides a ground to study formalisms for non-monotonic reasoning. It is shown that the formal meaning of negation, which grew out of an attempt to capture commonsense reasoning, is not complete and renders some PROLOG control mechanisms unsound. Moreover, attempts to better understand negation led to mechanisms that often do not terminate due to infinite positive or negative loops.
    Keywords: database systems, deductive systems, logic programming, PROLOG

  31. Type of paper: Summary in proceedings

    Title: Modelling biodegradation by computer based logical minimization

    Authors:
    Gamberger, Dragan (13026)
    Sekušak, Sanja
    Sabljić, Aleksandar
    Proceedings title: Second symposium ecologically rational development of chemical technologies
    Language: engleski
    Place: Zagreb
    Year: 1993
    Pages: from 75 to 75
    Meeting: Second symposium ecologically rational development of chemical technologies
    Held: from 02/08/93 to 02/10/93
    Summary: The aim of the study is to create an efficient biodegradation estimation system, based on existing experts knowledge on biodegradation processes coupled to the artificial intelligence methodology. The biodegradation estimates for 50 highly diverse chemical structures is used as a learning set in our modelling procedure. By applying the learning system, based on a modified multivalued logic minimization algorithm, existing biodegradation expert knowledge is transformed from examples to a function.
    Keywords: biodegradation, logical minimization, example based learning,

  32. Type of paper: Summary in proceedings

    Title: Selected applications of knowledge engineering in data processing and evaluation

    Authors:
    Bogunović, Nikola (4276)
    Editors
    Božičević, Juraj
    Proceedings title: Od uzorka do podatka i informacije, Zbornik sažetaka radova
    Language: hrvatski
    Place: Zagreb
    Year: 1993
    Pages: from 2 to 3
    Meeting: Od uzorka do podatka i informacije
    Held: from 10/20/93 to 10/23/93
    Summary: The paper demonstrates that semantic interpretation of adatabase, constructed of sampled measurement values, can be regarded as a simple and partial knowledge base, which, whenextended by first order logic relations, may form a completeand consistent system viable for automatic deduction. Some control strategies for deductive inferencing in such datadriven knowledge based systems are presented. However,knowledge acquisition from an expert, and representing thisknowledge by rules, remains a major difficulty in developing deductive systems. If the database embody characteristicexamples of the measurement concepts, there could be apossibility of automatic reduction of data to rules,formulating the domain. The paper presents learning procedureswhich, by induction from sample data sets, generate classification decision trees, rules, and clauses.
    Keywords: artificial intelligence, data base, deduction, induction, knowledge base

  33. Type of paper: Summary in proceedings

    Title: Fluid Flow Measurement System

    Authors:
    Marić, Ivan (82830)
    Editors
    Božičević, Juraj
    Proceedings title: CROSS, Od uzorka do podataka i informacije
    Language: hrvatski
    Year: 1993
    Pages: from 56 to 57
    Meeting: Od uzorka do podatka i informacije
    Held: from 10/20/93 to 10/23/93
    Summary: In this paper we have described a general system for fluid flowmeasurement. We have supposed circular cross-section conduitsrunning full. The measurement system enables selection of theprimary element, definitions of the static parameters at the measurement point, performs periodic sampling and the fluidcontents analysis, measurement of the dynamic parameters thatare influencing flow directly, periodic self-certification andcalibration of analog to digital conversions. In addition itperforms computationally intensive flow calculation algorithms, calculation of the characteristic parameters of complex fluids, communications between digital processor and master computer, andgraphical interpretation of the measurement data and thecalculation results. In the presented measurement system we haveimplemented different types of primary elements like orifice plates, nozzles, venturi tubes, and turbines. Also, we have builtin the complex numerical flow algorithms for different gases, gasmixtures, water and steam. By means of analog and digital inputand output signals, and the communication subsystem, digitalcomputer can also perform complex process controlling functions.The measurement system achieves high precision analog to digitalinput conversions by periodic autocalibration, even inunfriendly environments.
    Keywords: measurement system, primary element, self-certification, flow algorithms

  34. Type of paper: M.A.

    Title: Object oriented visual development of distributed instrumentation systems
    Faculty: Elektrotehnike i računarstva Zagreb
    Language: hrvatski
    Number of pages: 132
    Summary: The thesis gives an overview of theoretical and technological basis for the development of distributed virtual instruments by means of visual programming. It also represents a detailed description of a prototypical inplementation based on TCP/IP and X11 technologies. Distributed virtual instrumentation are modern instrumentation systems that merge distributed computing and graphical user interfaces, thus the thesis includes the overviews of current research trends in both of these areas. The integration of those two concepts in the prototype systems has been based on object-oriented programming, so the thesis includes an introduction to this subject, too. In the prototype called Vixed, distributed virtual instruments are developed by graphical interconnection of various predefined software modules in the form of data flow diagrams. The front pannel is also designed by direct manipulation of graphical objects. The implementation of the Vixed prototype has been based on Berkeley sockets, InterViews v3.1, TinIV v0.83 and OSF/Motif v1.1 programming libraries as well as C++ and C programming languages. The prototype has demonstrated that this way of visual development of complex instrumentation systems can make the process simple enough to be exercised by the experts in the domain of application, instead of computer science.
    Keywords: data-flow diagram, distributed computing, graphical user interfaces, object oriented programming, TCP/IP, virtual instruments, visual programming


  35. Type of paper: Mentorship

    Title: Object oriented visual development of distributed instrumentation systems

    Authors:
    Tulač, Sanjin
    Faculty: Elektrotehnike i računarstva Zagreb
    Mentor: BOGUNOVIĆ NIKOLA
    Number of pages: 132
    Author: Tulač dipl.inž. Sanjin
    Degree level: M.A.
    Summary: The thesis gives an overview of theoretical and technological basis for the development of distributed virtual instruments by means of visual programming. It also represents a detailed description of a prototypical inplementation based on TCP/IP and X11 technologies. Distributed virtual instrumentation are modern instrumentation systems that merge distributed computing and graphical user interfaces, thus the thesis includes the overviews of current research trends in both of these areas. The integration of those two concepts in the prototype systems has been based on object-oriented programming, so the thesis includes an introduction to this subject, too. In the prototype called Vixed, distributed virtual instruments are developed by graphical interconnection of various predefined software modules in the form of data flow diagrams. The front pannel is also designed by direct manipulation of graphical objects. The implementation of the Vixed prototype has been based on Berkeley sockets, InterViews v3.1, TinIV v0.83 and OSF/Motif v1.1 programming libraries as well as C++ and C programming languages. The prototype has demonstrated that this way of visual development of complex instrumentation systems can make the process simple enough to be exercised by the experts in the domain of application, instead of computer science.
    Keywords: data-flow diagram, distributed computing, graphical user interfaces, object oriented programming, TCP/IP, virtual instruments, visual programming

  36. Type of paper: Mentorship

    Title: Uncertainty representation in a diagnostic expert system
    Faculty: Elektrotehnike i računarstva Zagreb
    Mentor: BOGUNOVIĆ NIKOLA
    Date of defense: 07/04/94
    Number of pages: 62
    Author: Mesić dipl.inž. Tomislav
    Degree level: D.A.


  37. Type of paper: Mentorship

    Title: The mapping of first order predicate logic expressions into normalised clauses
    Faculty: Elektrotehnike i računarstva Zagreb
    Mentor: BOGUNOVIĆ NIKOLA
    Date of defense: 07/04/94
    Number of pages: 68
    Author: Tomac dipl. inž. Robert
    Degree level: D.A.


  38. Type of paper: Mentorship

    Title: Mapping of natural language expressions into logical clauses
    Faculty: Elektrotehnike i računarstva Zagreb
    Mentor: BOGUNOVIĆ NIKOLA
    Date of defense: 02/06/95
    Number of pages: 81
    Author: Đuroković dipl.inž. Sanja
    Degree level: D.A.


  39. Type of paper: Mentorship

    Title: The design of expert system shell based on logical meta-interpreter
    Faculty: Elektrotehnike i računarstva Zagreb
    Mentor: BOGUNOVIĆ NIKOLA
    Date of defense: 07/03/95
    Number of pages: 88
    Author: Jaganjac dipl.inž. Indir
    Degree level: D.A.


  40. Type of paper: Computer program

    Title: Software package for verification of digital filter design

    Authors:
    Bogunović, Nikola (4276)
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: IBM PC/XT/286/386/486
    Operating system: MS-DOS
    Programming language: Microsoft C, V 5.1
    Year: 1991
    Summary: Traditional approach to filter design and verification is basedon mathematical and graphical methods, and on construction andexperimentation with workable prototype. This programming packageintroduces efficient development tool, which enables an easyverification of a considered digital filter before itsrealisation. Input data to the program are analytical descriptionof the digital filter, and description of the complex inputsignal and its sampling frequency. Upon the completion of computing, the program produces graphically: input signal inthe time domain, output signal in the time domain, inputsignal in the frequency domain, and output signal in thefrequency domain. All input and output data can be saved on ahard disk or diskette.
    Keywords: computer aided design, digital filters, fast Fourier transform, programming

  41. Type of paper: Computer program

    Title: Program package for inductive learning

    Authors:
    Gamberger, Dragan (13026)
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: HP-9000/425
    Operating system: Unix
    Programming language: C
    Year: 1993
    Summary: This program package consists of three programs with aime togenerate rules, test the rules on example sets and locatepotentially incorrect examples. Input data can be variables ofquality and variables of quantity. The program package allowsexistance of only one output variable with two states. By itsiterative usage more complex problems can be solved as well. Thepackage is built in order to evaluate novel example basedlearning methods and to serve as an auxiliary system for analysisof scientific experimental data.
    Keywords: induktive learning, logical minimization, rule generation

  42. Type of paper: Computer program

    Title: XTALK: a program for interactive communication using TCP/IP computer network in a OSF/MOTIF Windows environment

    Authors:
    Tulač, Sanjin
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: HP 9000/425
    Operating system: HP-UX v7.05
    Programming language: C++
    Year: 1992
    Summary: XTALK is a program for interactive communication among users of aTCP/IP computer network using X window system. XTALK iscompatible with the standard TALK program, which uses a characterterminal, but brings two major enhancements: adjustablereceiving/sending window size ratio and the possibility to scrollback and forth to see the text which has flowed out of thewindow. The user interface has been implemented according to theOSF/Motif style guidlines.
    Keywords: talk, TCP/IP, OSF/Motif, X windows, user interfaces

  43. Type of paper: Computer program

    Title: WorkMates: a program for support in design and maintenance of distributed applications

    Authors:
    Tulač, Sanjin
    Ilakovac, Tin
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: HP 9000/425
    Operating system: HP-UX v9.00
    Programming language: C
    Summary: WorkMates system is an original solution developed at the RudjerBoskovic Institute in Zagreb with the intent to simplify thedesign and maintenance of distributed applications as much aspossible, having available computer resources in mind. This meansthat WorkMates system enables the user to create a group ofprograms which will run in parallel at several UNIX systemsconnected with the TCP/IP local (LAN) or wide-area (WAN) computernetwork.
    Keywords: distributed computing, distributed applications, TCP/IP

  44. Type of paper: Computer program

    Title: The Software Package for the Gas Flow Computation

    Authors:
    Marić, Ivan (82830)
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: PC XT/AT/386/486
    Operating system: DOS
    Programming language: Microsoft C
    Year: 1991
    Summary: The Software Package for the Gas Flow Computation is intended for te off-line calculation of the natural gas flow by using orificeas the primary metering device. Flow algorithm is in accordancewith International Standard ISO 5167. The gas density iscalculated by following the AGA-8 Recommendations. The actualflow is dependent on the flowing pressure, flowing temperature,gas mixture composition, type of orifice, and the differentialpressure on the orifice. The program includes 750 lines of sourcecode written in C-language, and is compiled by Microsoft (R) COptimizing Compiler Version 5.10 for MS-DOS, and can be linkedwith other programs by Microsoft (R) Overlay Linker Version 3.65.
    Keywords: gas flow, primary metering device, gas mixture

  45. Type of paper: Computer program

    Title: MPF - Software Package for the Computation of Fluid Flow Parameters by Means of Orifices, Nozzles, and Venturi Tubes

    Authors:
    Marić, Ivan (82830)
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: PC XT/AT/386/486
    Operating system: DOS
    Programming language: Microsoft C
    Year: 1992
    Summary: MPF Software Package is intended for the fluid flow measurementengineering based on orifice plates, nozzles, and venturi tubesthat are inserted in circular cross-section conduits runningfull. It assumes single-phased fluids, and the differentialpressures ensuring subsonic, and slow varying flow. Flowalgorithms are in accordance with following standards andrecomandations: ISO 5167, ISO 6976, AGA-8, and 1967 IFCFormulation. Fluids covered by this package are natural gas,water, and steam. Depending upon the selected item thecomputation of flow, differential pressure, or orifice innerdiameter can be done. The results of the particular calculationcan be saved into file, read from file, and printed. MPF sourcecode is written in C-language and is compiled by the Microsoft(R) C Optimizing Compiler Version 5.10 for MS-DOS, and can be linked with other programs by Microsoft (R) Overlay LinkerVersion 3.65.
    Keywords: flow calculation, metering orifice, single-phased fluids

  46. Type of paper: Computer program

    Title: RPC - Software Package for the Calculation of the RP-85B24 Flow Computer Constant

    Authors:
    Marić, Ivan (82830)
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: PC XT/AT/386/486
    Operating system: DOS
    Programming language: Microsoft C
    Year: 1993
    Summary: RPC Software Package is intended for the calculation of theactual flow of the natural gas through the orifices, nozzles, andventuri tubes, under the specified flowing conditions. Upon thecomputation of the actual flow the constant K, necessary toimprove the accuracy of the internally calculated flow by thecomputer RP-85B24, is determined. Flow calculations are performedin accordance with following references: ISO 5167 Standard, AGA-8Recomandations, and R. W. Miller "Flow Measurement EngineeringHandbook". The selection and/or modification of the parameters isaccomplished via the keyboard. The results of the particularcalculation can be saved into file, read from file, and printed.RPC source code is written in C-language, compiled by Microsoft(R) C Optimizing Compiler Version 5.10 for MS-DOS, can be linkedwith other programs by Microsoft (R) Overlay Linker Version3.65., and is adapted to IBM compatible personal computers.
    Keywords: gas flow, orifices, flow parameters, flowing conditions

  47. Type of paper: Computer program

    Title: Programming package for the generation and verification of the voice signal permutations

    Authors:
    Valožić, Predrag (187840)
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: IBM PC/XT/AT/386/486 + VGA
    Operating system: MSDOS
    Programming language: Borland Turbo Pascal V 6.0
    Year: 1992
    Summary: The programming package represents an integration of variousoriginal subprograms, employed in the development of time basedvoice signal scrambler. The scrambler is an example of thecombined analog and digital electronic device where itsfunctionality, defined by the degree of illegibility of thescrambled voice signal and the quality of descrambled sound,depends on the subjective evaluation of the processed signal.
    Keywords: digital signal processing, scrambling, signal protection

  48. Type of paper: Computer program

    Title: Programming package for the analysis and graphical display of the voice signal

    Authors:
    Valožić, Predrag (187840)
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: IBM PC/XT/AT/386/486 + VGA
    Operating system: MSDOS
    Programming language: Borland Turbo Pascal V 6.0
    Year: 1992
    Summary: Programming package for the analysis and graphical display ofvoice signal is originally developed as a part of a digital voicescrembler system. The analysis and graphical display subprogramsare embodied in the separate programming package because theseprocedures can also be used in other application of digitalsignal processing.
    Keywords: digital signal processing, graphical signal display, visualisation

  49. Type of paper: Computer program

    Title: VIXED: Software for distributed virtual instruments development

    Authors:
    Tulač, Sanjin
    Bogunović, Nikola (4276)
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: HP 9000/400 radna stanica
    Operating system: Unix
    Programming language: C, C++
    Year: 1994
    Summary: Software system Vixed enables easy development and implementation of distributed virtual instruments. The procedure boils down to drawing a data flow diagram and graphical manipulation of preddefined blocks, and designing a front instrument control pannel by direct manipulation of visual graphical objects. The complexity of data flow diagrams are overcome by structuring mechanisms, where subdiagrams are building blocks of the diagrams of the higher hierarchical level.
    Keywords: distributed computer systems, virtual instruments, visual programming

  50. Type of paper: Computer program

    Title: Diagnostic Expert System for Injection Moulding Process

    Authors:
    Bogunović, Nikola (4276)
    Mesić, Tomislav
    Odering party: Institut Ruđer Bošković
    HW platform: IBM PC
    Operating system: MS DOS
    Programming language: C
    Year: 1994
    Summary: Based on the injection mouldings technology knowledge base, a diagnostic expert system for such a process is designed. Knowledge is represented with production rules augmented with certainty factors. The expert system exhibits learning capability by dynamically changing certainty factors.
    Keywords: certainty factors, expert systems, fault analysis, learning

  51. Type of paper: Computer program

    Title: A Software System for Normalised Logic Clauses Generation

    Authors:
    Bogunović, Nikola (4276)
    Tomac, Robert
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: IBM PC
    Operating system: MS DOS
    Programming language: PROLOG
    Year: 1994
    Summary: The software package accomplishes the mapping from a set of first order logic sentences to a set of normalised clauses. The program includes shifting of negations, exchanging of implications and equivalences with conjunctions and disjunctions, skolemisation and decomposition of conjunctions.
    Keywords: automated deduction, logic, logic programming, PROLOG, theorem proving

  52. Type of paper: Computer program

    Title: Software Package for Transforming Natural Language Expressions into Logic Clauses

    Authors:
    Bogunović, Nikola (4276)
    Đuroković, Sanja
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: IBM PC
    Operating system: MS DOS
    Programming language: PROLOG
    Year: 1994
    Summary: The software package defines the constrained grammar of natural language, and parses sentences given in that language. The program analyses each sentence phrase and builds the corresponding logic clauses.
    Keywords: logic, natural language understanding, parsing of sentences

  53. Type of paper: Computer program

    Title: Expert System Shell Implemented with Logic Meta-Interpreter

    Authors:
    Bogunović, Nikola (4276)
    Jaganjac, Indir
    Odering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    HW platform: IBM PC
    Operating system: MS DOS
    Programming language: PROLOG
    Year: 1995
    Summary: The software package modifies the standard semantics of PROLOG language in a way that is more approprate for the design of a diagnostic expert system application. The program defines all predicates needed in the expert system shell with backward chaining control structure. The shell is verified on an automotive diagnostic knowledge base.
    Keywords: expert systems, meta interpreters, PROLOG, system diagnostics

  54. Type of paper: Survey/Study

    Title: The analysis of the informatic content of the analoguous solution of the 3rd order differential equation with periodic coefficients

    Authors:
    Mutabžija, Ranko (32891)
    Institution depot: Institut Ruđer Bošković
    Year: 1993
    Number of pages: 12
    Language: engleski
    Summary: The informatic content is determined for the sinusoidallyperturbed triple CR feedback oscillator. Pertaining third orderlinear differential equation with periodic coefficients isanalyzed on the basis of the analogous solutions, which aresimilar to the solutions of the Mathieu's second orderdifferential equation, but are more complicated. The principalfeature of the analogous solutions is the intermitent appearanceof the quasi sinusoidal behaviour and the relaxation character ofthe oscillation. All that means that the investigated type of theperturbed oscillator unites the properties of the Van der Pohl'sfor two substantially different sets of parameters. As timevariable component acts the perturbation. The quasiharmonic partsof the analogous solution have small informatic value. On thecontrary, the relaxational parts have great number of harmoniccomponents, and are of great informatic value.
    Keywords: informatic, content, perturbed, ocsillator, quasy-sinusiodal, relaxational, solutions, analogous

  55. Type of paper: Survey/Study

    Title: Burning-through characteristics of the incandescent cylindrical electrodes by HF induction heating

    Authors:
    Mutabžija, Ranko (32891)
    Institution depot: Institut Ruđer Bošković
    Year: 1993
    Number of pages: 12
    Language: hrvatski
    Summary: Described and determined are some features of the burning throughthe cylindric metal electrodes by the destructive use of highfrequency induction heating, otherwise used for degassationpurposes. Several characteristic cases, with some common basicproperties, are shown on four photographs. The process of burningthrough is asserted to be based on cumulative melting process ofthe cylinder parallel to the axis. The character of the burningthrough process depends on the applied heating power, the sort ofthe metal used, and the distribution of the weak sections alongthe circumference of the particular cylinder. Performed powerconsumption analysis shows in first approximation that the energyused per unit of the area of the cylindric specimen remainsconstant independent of the degree of the burning through. Thiscondition is sufficient to sustain the melting process afterinition till the destruction of the inductive coupling.
    Keywords: burning-through, cylindric, electrodes, HF, heating, characteristics, melting

  56. Type of paper: Survey/Study

    Title: Object Oriented Program Libraries for Graphical User Interfaces Design

    Authors:
    Tulač, Sanjin
    Ordering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    Year: 1994
    Number of pages: 42
    Language: hrvatski
    Summary: The paper gives basic concepts of object oriented programming libraries, intended for graphical useržs interface (GUI) design. All significant characteristics are compared, together with methodes of their usage. Particular attention is paid to advantages and drawbacks of each, in the view of direct manipulation of graphical objects.
    Keywords: graphical useržs interface, object programming, visual programming

  57. Type of paper: Survey/Study

    Title: One Method for the Resolution and Accuracy Measurement of the Magnetic Induction Measurement by the NMR Signal Application

    Authors:
    Mutabžija, Ranko (32891)
    Ordering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    Year: 1994
    Number of pages: 9
    Language: hrvatski
    Summary: NMR signal application for magnetic inductance measurements reduces magnetic measurements to the resonant frequency measurements for same definite substance used as probe. In this way, the measurements are transferred in the domain of the most precise measurements at all. By choosing properly the passage speed through specific resonant line, the resonant signal is sharpened, corresponding frequency band broadened and the accuracy of the magnetic induction measurement increases. Resolution of the magnetic resonance measurements is increased by the increase of the resonant signal sweep along the oscilloscope screen between the reference points.
    Keywords: measurement, magnetic induction, accuracy, resolution, NMR application

  58. Type of paper: Survey/Study

    Title: Estimation of the Oscillation Character and Informatic Content for Sinusoidally Perturbated Phase Shift Oscillator

    Authors:
    Mutabžija, Ranko (32891)
    Ordering party: Institut Ruđer Bošković
    Institution depot: Institut Ruđer Bošković
    Year: 1995
    Number of pages: 16
    Language: engleski
    Summary: The differential equation of the sinusoidally perturbed quasi linear RC phase shift oscillator is formulated for the general case of the active element transconductance variation. The character of the analogous solutions of the derived third order differential equation with sinusoidally perturbed coefficients is analyzed. The informatic content of the qualitatively different parts of the experimentally obtained analogous solutions is discussed. It is estimated that the oscillators with periodically time varying components exhibit alternatively quasi harmonic and relaxational properties, with corresponding low and high informatic content.
    Keywords: alternating oscillation character, perturbed oscillator, differential equation, analogous solutions, quasi harmonic, relaxational, informatic content

  59. Type of paper: Invited lecture

    Title: Scientific Fundamentals of the Long Term Metrology Development
    Institution: Državni zavod za normizaciju i mjeriteljstvo
    Year: 1994


  60. Type of paper: Other

    Title: Object oriented visual development of distributed instrumentation systems

    Authors:
    Tulač, Sanjin
    Type of work: magistarski rad - autor je bio znanstveni novak na projektu
    Language: hrvatski
    Summary: The thesis gives an overview of theoretical and technological basis for the development of distributed virtual instruments by means of visual programming. It also represents a detailed description of a prototypical inplementation based on TCP/IP and X11 technologies. Distributed virtual instrumentation are modern instrumentation systems that merge distributed computing and graphical user interfaces, thus the thesis includes the overviews of current research trends in both of these areas. The integration of those two concepts in the prototype systems has been based on object-oriented programming, so the thesis includes an introduction to this subject, too. In the prototype called Vixed, distributed virtual instruments are developed by graphical interconnection of various predefined software modules in the form of data flow diagrams. The front pannel is also designed by direct manipulation of graphical objects. The implementation of the Vixed prototype has been based on Berkeley sockets, InterViews v3.1, TinIV v0.83 and OSF/Motif v1.1 programming libraries as well as C++ and C programming languages. The prototype has demonstrated that this way of visual development of complex instrumentation systems can make the process simple enough to be exercised by the experts in the domain of application, instead of computer science.
    Keywords: data-flow diagram, distributed computing, graphical user interfaces, object oriented programming, TCP/IP, virtual instruments, visual programming

  61. Type of paper: Other

    Title: G.Booch: Object-oriented analysis and design with applications

    Authors:
    Bogunović, Nikola (4276)
    Type of work: book review, Jour. of Comput. and Inf. Technology, vol 1, 1993, 4, 304-307.
    Keywords: object-oriented programming, programming


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