The II InternationalConference

on Microelectronics andComputer Science

October 30-31, 1997

Volume I

Proceedings: Miaoelecfronics and Semicondudor DevicesComputer Science

DrgenlZedby: Technical University of Moldova:Faculty of Computers, Informatics andMicroelectronics;Faculty of Radioelectronics

blCO-D/lBrationwith: Institute of Applied Physics of theAcademy of Sciences of Moldova,SPIE National Committee of Moldova

Tehnica Publishing HouseTechnical University of Moldova

Organizing Committee:

Radaufan S. - Chairman, MoldovaSontea v., Cornea 1. - Co-chairmen, Moldova

Andronatii N., MoldovaBe$liu v., MoldovaBrehov 0., RussiaCasasent D., U.S.A.Casian A., MoldovaCasian 1., MoldovaCuliuc L., MoldovaCupcea N., RomaniaDashevsky z., IsraelDimitrache S., MoldovaDragulenescu M., RomaniaGhifu D., MoldovaGiscii v., Moldova

Sponsors

Companies:"AFN" SR.L."Accent Electronics" SA"Norma "S.R.L."CIBER", "T/SH" S.R.L.MOLDTELECOM

Gremalschi A., MoldovaMateescu A., RomaniaMcEwan., U.K.Milvidskii M., RussiaPerju v., MoldovaPopescu A., MoldovaRacry L., FranceRidley B., U.K.Rusanovschi v., MoldovaSecrieru N., MoldovaSi#anu T., MoldovaSirbu N., MoldovaTiginyanu 1., Moldova

"Systemcomputer""Polyteh" S.R.L, "MCS" S.A."TOR" S.R.L."Polaris Satelite Servicii" S.R.L."PRAG-3" S.R.L."Radiotel - MIR" S.R.L.

© Tehnica Publishing House

ISBN 9975-910-25-4

CONFERENCE PROGRAM

Microelectronics and semiconductors devices

Properties and Characteristics of Novel Laser Diodes Based onAsymmetric Quantum-Well Heterostructures 1Afonenko A.A, Kononenko V.K., Manak 1.S, Nalivko S. VStepanov Institute of Physics, National Academy of Sciences of BelarusThe MOS-Si and CMOS Transistors Parameters Optimisation WithIon Implantation and Photon Annealing 3Shishiyanu S.,Shontea V.P., Pokaznoi 1.., Railean S., Shishiyanu T.S.,Safianuk M., Lupan O.Technical University of MoldovaCharacteristics of InAsP!lnGaAsP Edge Emitting Laser DiodesObtained by Localised Fnsion on GaAs Substrates 8Syrbu A.V', Iakovlev V.p',Fernandez J.', Behrend J.', Sagalowicz L.',Carlin J.F.', Berseth C.A.', Rudra A.' , Kapon E.'1- Technical University of Moldova2- Institute de micro- et optoelectronique, SwitzerlandRaman Characterization of Materials for Optoelectronics 12Burlakov 1.1., Ursaki V.V., TiginyanuI.M., Radautsan S.l.Institute of Applied Physics, Academy of Sciencies of MoldovaPhotodiode-Quadrant with Integrated Central Detector 16Dorogan V., Molodean I., Vicru T., Coseac V.Technical University of MoldovaBIT's Analog Behavioural Electrothermal SPICE Modelling 20Maxim Gh., Maxim A.Technical University "Gh. Asachi" Iasi, RomaniaFactors Determinning the Quality and Reliability of InP - InG.AsPEpit.xialStructu res 25Dorogan V., Samusi 1., Rusanovschi M" Burbulea N" View T., Coseac V.Technical University of MoldovaThe Influence of Pressure and Molar Concentration Upon theBertinit Solubilization u 29Grozesctl I.l,Muscutariu 1. 1

, Irimia D. l, Zamfir A? Udrescu V. \

Pricopi N.\J- National Jnstitute of Condensed M.tter Research,Timisoara2- Western University of TimisoaraThe Study of optical Behaviour of Metallophtalocy.nineThin Layers 33Popescu S, SzabadaLZ, Spilca. PElectrochemical and Condensed Matter Research-DevelopmentNational Institute, TimisoraExperimental Technique for MOS Transistors Radiation

269

Response Analysis in Subthreshold and Above Threshold Region 37Zebrev G.I. I , Belyakov y.y.'1- Research Institute of Scientific Instrtll11ems, Moscow2- Moscow Engineering Physics InstituteHydrogen-Electrou Model orIutcrface Trap Formation in the MOSStructures after Irradiation 41Sogoyan A.Y., Cherepko S.Y., Pershenkov Y.S.Moscow Engineering Physics InstituteThe Surface State Role in the HTSC-Semiconductor Contacts forDiode Detectors 47Kerner Ia. I.Institute of Applied Physics of Moldavian Academy of SciencesSolubilizing Agent's Role in the Proces~ of Obl~liuillg Bcrlinit at HighPressures and Temperatures 50LGrozescu l

, I..Muscutariu I, D.lrimia I, NJ.li:-ica I, D.Tomuta2

I-National Institute Of Condensed Matter ReseaJch, Timisoara2- National Institute of Development and I{esear"h for Materials Physics, BucurestiSimulation and Investigation Of Low Dose Rate Effects in BipolarDevices 54Avram LA, RllSSU TTechnical University of MoldovaThe P ..ediction of the Structnres Respollse for Space Environments 58Maslov Y.B. I

, Abramov y.y. l, Emeli,mov y.y.'.

Rllsanovschi V.1.3, Avram. A.I3, Russli T.~

]-Moscow Engineering Physics Institlllc,2-Rescarch Institute of Scienti fie Instrumo::nts, Russia3- Technical University of MoldovaSolid State Gas Sensors Contemporar)' Reseat cb and Reconstructionof Intergraill Barriers in the Gas Sensitive Films 61Ivashchenko A.I., Kerner la.I.Institute of Applied Physics ofMoldavian Academy of SciencesThe Barrier Thermo-Electromotive Force of l\letall-ScmiconductorContact 65I.Balmus I, Z.M. Dashcvski',M.Miglei'1- Technical University of Moldova2- Technical University, lsraelCarriers Mobility in Semiconductor Quantum Wi..es 67Scherter H'., Scherrer S. \ Casian A.', Sur 1', Sandu A.'I-Ecole des Mines, France2-Technical University of MoldovaSpace Extended Interface Electron States in S~miconductor

Su per·lattices ~ 70V.G.KantserInternational Laboratory of Superconductivity anJ Solid State Electronics of

270

Academy of Sciences of MoldovaSchrodinger's Equation - Information and Energy (stationary case) 80Borsevici V.lntemational lnformatician AcademyEffect of Pressure 00 the Electronic Thermal Conductivity inQuasi+One+OJ mensionaI Crystals 83Casian A'., Dusciac V'I-Technical University of Moldova2-State University of MoldovaMirrorless Optical Bistability in a Thin Semiconductor Film UuderT\vo-Pulse Excitation , 87Khadzhi P.I., Gaivan S.L.Institute of Applied Physics, Academy of Sciences of MoldovaZinc Phosphide Switchable Devices 89Morozova V., Syrbu N.Technical University of MoldovaInfluence of Sn02 Thin Film's Par-dmetrs on Their Gas SensitiveCharacteristies 91Dmitriev S., Korotchenkov G., Brynzari V.Technical Uni\ersity of MoldovaPercolation Tunneling Mechanism in ZnSe Based Schottky Diodesand MIS Structures 95Bruk L.. Korotkov V., Ketrush P., Simashkevich A., Neagu A.State University of MoldovaLow Dose Rate Effect Simulation Tecbnique for MOS and BipolarDevices on a Single Chip , 98Pershenkov V.S.' ,Chcrcpko S.V.• IMaslov V.B I

• Abramov V.V. I,Emelianov V.V.', Rusanovschi V.I.'l-Moscow Engineering Physics Institute, Russia2-Research Institutc of Scienti fie Instruments, Russia3- Technical University of MoldovaThe Photoelectric Analog ofCardiogramc 101Annencea N.Technical University of MoldovaHigh Efficiency Methodology for Quality Control inMicroelectronics 102Shestakova T.Technical University of Moldova"onlinearity of Critical Magnetic Fields of SupraconductingMultilayers 104V.Zdravkov, a.Moldovan, A.SidorenkoInstitute of Applied Physics Moldavian Academy of ScienceThe Study of Polar Dielectrics' Behaviour in Radiofreqency Field 108LGrozescu', A.Zamfir', V.Udrescu', .Pricopi 1

3.71

I- National Institute of Condensed Matter Research,Timisoara2· Western University of TimisoaraGrowth and X-ray Analysis of CnCr,Se,.,Br, Componnds 112M.Turcu, A.MunteanuNational Institute of Condensed Matter Research,TimisoaraColour Cathodoluminescence and Photoluminescence ofOptoelcctron icMatcrials 116Nazarov M.V. 1

, Nazarova T.A?, Bruk L.1.2, Korotkov V.A. 2,Simashkevich A.V?,

Sobolevskaya R.L.2, Sushkevich K.'

I-Tcchnical University of Moldova2-Stale University of MoldovaPseudo Jahn-Teller Vibronic Model for the Trigonal d' Center.Modeling of Luminescence Characteristics of Cdlu2S4:Cr 120Ostrovsk)' S.M.', Palii A.V.', Popov S.M.'I-Institute of Applied Physics, Academy of Scienccs of Moldova2- Institute of Chemistry, Academy of Sciences of MoldovaCharacterization of InGaAs/lnGaAsP/lnGaP Laser Diode FacetStatus by Photocurrent Spectroscopy 124lakovlev V.P., Catughin O.V., Suruceanu G.I., Caliman A.N., Vieru S.F.,Nantoi V.V.,Septichin v.N.Technical University of MoldovaUV Radiation Sensors On GaAs- AIGaAs Heterostructurcs 128Dorogan V., Molodean I., Vieru T, Coseac V.Technical University of Moldova

Computer Science

Architecture Selection for a Multilayer Feedforward Network 131Albu Felix, Matcescu Adelaida, Dumitriu Neculai"POUTEHNICA" University of BucharestSome Aspects Regarding the Distributed System with MultipleFunctions 134" Graur Adrian, Gaitan Vasile"Stefan eel Mare" University of SuceavaAlternative to Uigh Resolution Television and Digital Television 138Antonov Alexander A.Academician ofUAOI, UkraineSinteza sistcmelor discrete parametric invarianfe 140Besliu Victor, Ursu AnatolUniversitatea Tehnica a Moldovei

KOPRAS forWindows 142Balabanov AnatoJij, Balabanov V.A.,eng. Laba M.A.Technical University of MoldovaAutomatizarca procedurii de proicctare eu ajutorul matrieelorlogiee programa bile 145

272

Gisca VasileUniversitatea Tehnica a MoldoveiSoftware pentru depanarea microprogramelor l47Glsca Vasile

Universitatea Tehnica a MoJdoveiSistem distribuit de dirijare a proccsclortehnologice 149Ababei Victor, Negura Valentin, Sudacevschi VioricaUniversitatea Tehnica a MoldoveiParallcl Computations in Control ofTcchnological Processes 153Negura Valentin, Ababei Victor, Sudacevschi Viorica

Technical University of MoldovaNumcrical Mcthods of the Third Order Convergence 156Moraru VasileTechnical University of MoldovaApplication of Databasis to the Solution of Unstructured DataProblems 159Careca LiviuTechnical University of MoldovaParalelismul taskurilor in regim dataflow 161Moram Victor, Zaporojan SergiuUniversitatea Telmica a MoldoveiVeriflcarea functiouala in timp real a protocoalelor 164Gutuleac Emilian, Pogutschi RaisaTechnical Universi ofMoldova,

erformant Multifunction 1/0 Board for the illM PC AT 167Micea Mihai, Guzun lurie, Guzun Viace:ss.':la~v~ ---------.,/

"Politehnica" niversi ofTil11i~oara r

New spects of Estimatiou of Observability and Testability ofDigital Structures with Fcedback 172Cojocaru [onTehnical University of MoldovaThe new approach of probabilistic estimation of controllability ofdigital structures with triggers , t76Cojocaru IonTehnical University ofMoldovaIssues in Building Hard Real-Time S"stems 180Holotescu Carmen and Sora loana

"Politehnica" University ofTimi~oara

Event-Driven Simulators - A Linear Circuit MacromodellingTechoique 186Popescu Gabriel Stefan and Maxim Gheorghe

Technical University "Gh, Asachi" lasiA Numerical Method for Boolean Function Synthesis withMultiplexers Based FPGA's 190

273

Posa ConstantinTechnical University oflasi."Some New Matlab Functions for tbe Design of Fuzzy Systems 196Prostean Oetavian, Dranga Octavian, Filip loan, Curiae Daniel"Politehnica" University ofTimi~oara

Formal Verification of Real-Time Systems usingTemporal Model-Cbecking 199Sora loana and Holotescu CannenIIPolitelmica" University ofTjmi~oara

Tree Structures witb M Brancbes per Level 203Tarniceriu Daniela, Munteanu ValeriuTechnical University IIGh. Asachi lt IasiLogical Processor for Intellectual Systems 206Pechersky Yu1,Zakrevskij A.'I-Institute of Mathematics of the AS of Moldova,2-lnstitute of Engineering Cybernetics of the AS of Belarus,Collaboration in tbe Classroom and Over tbe INTERNET 208Anischievici MTechnical University of MoldovaAn Algoritbm for Training Neural Networks 212Curiac Daniel-loan, Filip loan, Prostean Octavian, Dranga Octavian"Politehnica lt University ofTimi§oaraA Neural Network Hardware Implementation 21SCimpu Virgil FlorinIlPolitechnica" University ofTimi~oara, Romania.Asupra implementarii unor module de segmentarepentru limba rOtuana 227Bcjan ViorelUniversitatea Tehnica din Chi~inau

Asupra implementarii unui simulator de circuite digitale 231Bejan ViorelUniversitatea Tehnidi din Chi~inau

Creation of the Informatiou System - Stringent Need forthe Fulfillment of tbe Managerial Objectives 236

Gheorghita MariaTechnical University of MoldovaCase Based Reasoning System to Handle witb CaseStudies on Documentary Credits 239Ghincul Gh., Sarbu V.Institute of Mathematics of the AS of MoldovaThe Project of Electronic Value Realization in Moldova 243Anestiady V., Abashkin G., Coroban Z., Oleinik W., Pogiba VDesign for Testability: A New Approach for PartialParallel Scan........................•........................................................246

274

Imbrea Damian, Cojan NeculaiTechnical University "Gh. AsachiError Masking Minimisation In Parity-Cbeck Compression 249Jmbrea Damian, Cojan NecnlaiTechnical University "Gh. Asachi"Numerical Finite Element Analyses and Dynamicsof Mecbanism witb Flexible Link 253Knlev MTechnical University of MoldovaEnglisb Buisiness Letter Sentence and itsMacbine Translation 256Cijacovschi V., Popescu AnalolTechnical University of MoldovaModelul relational de dale: beneficii ~i probleme 259COlelea V.Academia de ~liin\e Economice, R.MoldovaRetele informatice in R.MoJdo\'a 264Bolun IonAcademia de Sliin\e Economice, R.Moldova

275