Web services are widely used in banking, finance, insurance, tourism, e-business sectors and so on. Web services have emerged only recently, so the issues are typical for new technologies: ideas had arisen on technological level, and methods for modeling and development are coming only later. Existing development processes and notations such as Object-Oriented Analysis and Design (OOAD), Enterprise Architecture (EA) frameworks, and Business Process Modeling (BPM) provide us with capabilities to identify and describe appropriate architectural abstractions, but it’s not enough for realization of Service Oriented Architecture (SOA). In this work the methodology is proposed for design of stand-alone services and combining them into larger system. Proposed methodology joins main principles of Object-Oriented Analysis and Design, Enterprise Architecture frameworks, and Business Process Modeling. This methodology allows to describe service-oriented models using UML diagrams and to combine them with each other. Stages of designing stand-alone services are: business modeling, requirements analysis, identification of interfaces, analysis of interface interaction, specification of components, service model (WSDL diagram) design. Designing services systems consists of following steps: use case modeling, services identification, choreography modeling, business modeling and composite service modeling. The examples of proposed methodology for designing stand-alone services and combining... [to full text]

Monitoring is an important activity in daily local area network maintance routine. To be able to run the network efficiently and without incidents that run into problems, networks must be monitored. This way it is possible to detect and remove serious problems at early stages. Various techniques are employed, including monitoring and checking users actions, data traffic, active running processes, open ports and system log analysis. This thesis describes a method for engineering and implementing local area networks software and using it for field data analysis. In the process of writing this thesis such sample of software was created and aimed at the processes and event logs of Kaunas University of Technology Software Engineering Department. In the conclusion methods and ways that will help solve current problems were suggested. Most alarming thing to notice was constant port scans and illegal attempts to log into the system without permission.

Disertacijoje nagrinėjama interneto tinklo infrastruktūros patikimumo problematika, analizei naudojant tinklo topologijos tyrimus, grafų teorijos taikymą ir tinklo modeliavimą. Tyrimų objektas, interneto tinklo infrastruktūra, kurios pagrindą sudaro autonominės sistemos ir tarptinklinių sujungimų linijos. Nuo stabilios interneto tinklo veiklos priklauso informacijos pasiekiamumas, elektroninė komercija, nutolusių objektų valdymas ir t. t. Pagrindinis disertacijos tikslas – sukurti metodikas ir algoritmus, skirtus interneto tinklo infrastruktūros analizei bei veiklos patikimumo kontrolei. Tyrimų taikymo sritis – interneto tinklo veiklos tęstinumo priežiūra ir reguliavimas. Darbe sprendžiami šie pagrindiniai uždaviniai: interneto tinklo topologijos analizės modelio ir priemonių sudarymas; interneto junglumo tyrimas siekiant identifikuoti kritinius elementus, kurių pažeidimai susiję su tinklo funkcionalumo praradimu; kritinių interneto tinklo elementų stebėsenos modelio sudarymas; eksperimentiniai kibernetinių atakų simuliacijos bandymai; bei interneto tinklo infrastruktūros patikimo stiprinimo parinkimas. Disertaciją sudaro įvadas, 5 skyriai, rezultatų apibendrinimas, naudotos literatūros ir autoriaus publikacijų disertacijos tema sąrašai bei priedai. / The dissertation investigates the issues of dependability of the Internet network infrastructure that were studied by using the network topology analysis, graph theory and network modelling. The object of the study is the Internet network infrastructure, based on autonomous systems and interconnecting lines. Stable functioning of the Internet network determines the availability of information, electronic commerce, control of remote objects, etc. The main objective is to develop the methodologies and algorithms for analysing the Internet network infrastructure and controlling the reliability of functioning. The scope of application of the study is the supervision and regulation of continuity of the Internet. The following main tasks are solved: development of the topological scheme of the Internet network, selection of models and tools for analysis; the Internet network connectivity analysis for the purpose of identification of the critical network elements, whose violations would result in loss of connectivity of the network; as well as development of the model for monitoring of the critical elements of the Internet network and cyber-attacks simulation experiments. The scientific work consists of the general characteristic of the dissertation, 5 chapters, conclusions, list of literature, list of publications and annexes.

The dissertation investigates the issues of dependability of the Internet network infrastructure that were studied by using the network topology analysis, graph theory and network modelling. The object of the study is the Internet network infrastructure, based on autonomous systems and interconnecting lines. Stable functioning of the Internet network determines the availability of information, electronic commerce, control of remote objects, etc. The main objective is to develop the methodologies and algorithms for analysing the Internet network infrastructure and controlling the reliability of functioning. The scope of application of the study is the supervision and regulation of continuity of the Internet. The following main tasks are solved: development of the topological scheme of the Internet network, selection of models and tools for analysis; the Internet network connectivity analysis for the purpose of identification of the critical network elements, whose violations would result in loss of connectivity of the network; as well as development of the model for monitoring of the critical elements of the Internet network and cyber-attacks simulation experiments. The scientific work consists of the general characteristic of the dissertation, 5 chapters, conclusions, list of literature, list of publications and annexes. / Disertacijoje nagrinėjama interneto tinklo infrastruktūros patikimumo problematika, analizei naudojant tinklo topologijos tyrimus, grafų teorijos taikymą ir tinklo modeliavimą. Tyrimų objektas, interneto tinklo infrastruktūra, kurios pagrindą sudaro autonominės sistemos ir tarptinklinių sujungimų linijos. Nuo stabilios interneto tinklo veiklos priklauso informacijos pasiekiamumas, elektroninė komercija, nutolusių objektų valdymas ir t. t. Pagrindinis disertacijos tikslas – sukurti metodikas ir algoritmus, skirtus interneto tinklo infrastruktūros analizei bei veiklos patikimumo kontrolei. Tyrimų taikymo sritis – interneto tinklo veiklos tęstinumo priežiūra ir reguliavimas. Darbe sprendžiami šie pagrindiniai uždaviniai: interneto tinklo topologijos analizės modelio ir priemonių sudarymas; interneto junglumo tyrimas siekiant identifikuoti kritinius elementus, kurių pažeidimai susiję su tinklo funkcionalumo praradimu; kritinių interneto tinklo elementų stebėsenos modelio sudarymas; eksperimentiniai kibernetinių atakų simuliacijos bandymai; bei interneto tinklo infrastruktūros patikimo stiprinimo parinkimas. Disertaciją sudaro įvadas, 5 skyriai, rezultatų apibendrinimas, naudotos literatūros ir autoriaus publikacijų disertacijos tema sąrašai bei priedai.

Be tradicinių kartografinio vaizdavimo metodų sukurtų euklidinės geometrijos pagrindu yra kartografinių modelių, kurių sudarymo principas – ne euklidinė metrika. Tokie modeliai yra kartoidai, minčių žemėlapiai, kartografinės anamorfozės. Kartografinės anamorfozės – tai išvestiniai tradicinių žemėlapių grafinis vaizdas, kuriame reiškinio kartografinio vaizdo deformacija priklauso nuo nagrinėjamo reiškinio reikšmių, pamatinio žemėlapio bei pasirinkto algoritmo tipo. Anamorfozės būna dviejų būdų: reguliaraus ir laisvo tinklo. Šio baigiamojo magistro darbo tiklas susipažinti su kartografinių anamorfozių sudarymo teorinėmis nuostatomis ir remiantis jomis sudaryti nereguliaraus tinklo Lietuvos gyventojų tarptautinės emigracijos kartografinę anamorfozę. Kartografinės anamorfozės labiausiai tinka socialiniams-ekonominiams reiškiniams vaizduoti, nes anamorfozės, kartografinės raiškos požiūriu geriau perteikia statistinę informaciją, ir pagerina komunikacinę kokybę. Kartografinių anamorfozių didžiausias trūkumas – paprastų algoritmų joms sudaryti trukūmas. Tačiau nepaisant to, šis kartografinio vaizdavimo metodas yra vienas iš perspektyvių kartografijos plėtros sryčių, todėl labai svarbu, kad Lietuvoje būtų pradėtas tirti šis kartografinio vaizdavimo būdas. / Besides the traditional methods of the cartographical representation, created by the laws of Euclidean geometry, there are images, which have in their basis principles of non-Euclidean metric: cartoids, "mental" maps and cartographical anamorphosises. Cartographical anamorphoses - the graphic representations, derivatives of traditional maps, which scale is transformed, depending on the value of the characteristic of the phenomena on an initial map also on algorithm. Anamorphosise can be classified into: regular and irregular grid. The purpose of this master degree work is to get more information about creation of cartographical anamorphosises and going by that to make irregular grid anamorphosis of international emigration in Lithuania. Cartographical anamorphosises are the best to use for socio-economical analysis, because it show better statistic information and it have better quality of communication. The biggest disadvantage of cartographical anamorphoses is the defect of simple algorithms to create them. In spite of that, this cartographical method of visualization is one of most promising field of cartography that is why is very important to start analyses this cartographical method of visualization in Lithuania.

There are more and more incompatible systems with the growing number of services provided by computers. The user has to chose between expensive huge systems, offered by large companies like Microsoft or Oracle and losing competition. While these huge systems have a lot of possibilities, small and middle sized companies can only use a small portion of options offered there. With the increasing pressure from competitors, this forces users to choose other technologies like Web Services, in order to survive rivalry. WSDL (Web Services Description Language) was invented to describe Web Services in the most simple way there is. Web Service is a collection of protocols and standards used for exchanging data between applications or systems. Software applications written in various programming languages and running on various platforms can use web services to exchange data over computer networks like the Internet in a manner similar to inter-process communication on a single computer. In this work the methods are suggested for creation of stand-alone E-Commerce Hub and combining other systems into it. By the help of Web Services, users of Internet Stores, and other systems based on product and service data, are able to share their information with others through the E-Commerce Hub. It is easily automated and requires no maintenance.

This master`s research analyses reorganisation programme of the school system in Mažeikiai district. It reveals the essence and the expression of the reorganisation of the school system. It theoretically focuses on the situation of the education reform in Lithuania and involves a review on the reorganization of the foreign school system. Also, there are identified the determinants of the reorganization of the school system in Mažeikiai district and in the country. The main method of this research has been an oral interrogation as well as a qualitative interview. Obviously, the Protocol (the questionnaire of the qualitative interview) has been prepared for the research. Seventeen experts of education from Mažeikiai district has taken part in the interrogation. The content method of analysis has been applied for processing the research data as well as for the analysing data there was applied the logical – inductive method. Thus, the results of the interrogation permitted to define the weaknesses and strengths of the reorganisation programme of the school system in Mažeikiai district. In addition, the hypothetical premises (which were raised in the beginning of the research) confirmed only partly because the reorganization programme of the school system in Mažeikiai district is appraised quite propitious. Though, it has a lot of imperfections. The opinion of the education experts confirms the second hypothetical premise that there is a shortage of modern... [to full text]

Research on the certification of the distribution net equipment. Electricity engineer‘s Master‘s project/ scientific mentor E. V. Nevardauskas; Technology faculty of Šiauliai university, Electricity engineering department. .- Šiauliai, 2006. – 75p. The theme of Master Project of Electrical enginner is actual, because there are no acredited electrical equipment test laboratories in Lithuania. Range of tests performed at electricity distribution equipment factory was examined in the project, with emphasis on specification of tests. The work also contains review of prices for the type tests as given by indipendent laboratories. Examination of requirements for accreditation of testing laboratories and calculation of economical profitability if such laboratory were founded in Lithuania are provided as well. After execution of deeper analisis it was determined, that investment in foundation of a laboratory would pay off, if laboratory served, not only needs of ELGA UAB, but also that of wider range of clients, including those from abroad.

“International Technology Roadmap for Semiconductors” (ITRS) teigia, kad baigiantis dešimtmečiui bus pagamintas 50 – 100 nm lustas susidedantis iš maždaug 4 bilijonų tranzistorių operuojančių 10Ghz. Taigi tokių parametrų sistemas pagaminti yra nelengva, tranzistorių skaičiaus didėjimas taip pat didina lusto dydį, lusto sud��tingumą bei sunkina lusto integruojamumą. Be to vienlustės sistemos naudoja bendras magistrales bendrauti su kitais lustiniais resursais. Šios magistralės yra nedalomos, todėl ateityje toks komunikavimo metodas taps vis didesne problema gaminant lustus susidedančius iš bilijonų tranzistorių. Šiems tikslams spręsti ir buvo pasiūlyta vienlusčių tinklo paradigma. Vienlusčių tinklų paradigma siūlo galimus komunikavimo infrastruktūrų sprendimus, susiduriant su vis sudėtingesnėmis sistemomis, bei padeda trumpinanti lusto pagaminimo laiko periodą. Šiame darbe naudojama atkartojimo technologijos, kuriant bendrini komponentą vienlusčių tinklams. Metaspecifikacija, sukurta naudojant preprocesorinį atkartojimo metodą. / According to the International Technology Roadmap for Semiconductors (ITRS), before the end of this decade we will be entering the era of a billion transistors on a single chip. It is being stated that soon we will have a chip of 50- 100 nm comprising around 4 billion transistors operating at a frequency of 10 Ghz. However, it has been observed that as the system grows, so does the complexity of integrating various components on a chip. The major threat toward the achievement of a billion transistor chip is poor scalability of current interconnect structure of today’s SoC. In order to cope with growing interconnect infrastructure, the “Network on chip (NoC)” concept was introduced. NoCs present a possible communication infrastructure solution to deal with increased design complexity and shrinking time-to-market. It is clear that NoCs can potentially become the preferred interconnection approach for SoCs being developed in a near future. This paper discusses the impact of the reuse of NoC components methods, for parameterize and test these systems. There is preprocessing type reusing being used, to create a router metaspecification of router for the 2d torus interconnect network.

Šiame darbe tiriama bendrojo lavinimo mokyklų tinklo pertvarkos problemų struktūra, analizuojamos problemų priežastys, galimi sprendimo būdai. Darbo tikslas - atskleisti Vilniaus miesto savivaldybės bendrojo lavinimo mokyklų pertvarkos problemas, jų skirstymą ir pertvarką įgyvendinti trukdančius veiksnius. Darbą sudaro įvadas, teorinė ir empirinė dalys, pateikiamos išvados ir rekomendacijos bei literatūros sąrašas ir priedai. Pirmame teorinio darbo skyriuje apžvelgiama bendrojo lavinimo mokyklų reformos eiga, Lietuvai atgavus nepriklausomybę. Aptariami reformos politiniai, socialiniai, ekonominiai motyvai. Išskirti reformos etapai, pateikiami šiems etapams būdingi bruožai. Antrame teorinio darbo skyriuje nagrinėjami Lietuvos bendrojo lavinimo mokyklų tinklo pertvarkos trukdžiai bei problemos, įvardintos mokslininkų, švietimo specialistų, nepriklausomų tyrėjų. Taip pat pabrėžiama įvairių švietimo bendruomenių įtaka reformai, bendrais bruožais pateikiamas bendrojo lavinimo mokyklų bendruomenių (tėvų, mokinių, mokytojų, švietimo specialistų ir kt.) atstovų reformos vertinimas. Analizuojama Vilniaus miesto bendrojo lavinimo mokyklų tinklo pertvarkos kilmė bei eiga. Trečiame skyriuje analizuojami gauto kiekybinio ir kokybinio tyrimų rezultatai. Tyrimų duomenys nagrinėjami Vilniaus miesto bendrojo lavinimo mokyklų tinklo pertvarkos kontekste. Skyriuje pateikiama problemų struktūra pagal problemų socialinę, ekonominę ir politinę sritis ir pagal problemos aktualumą konkrečiam... [toliau žr. visą tekstą] / The structure problems of structural problems of reorganization of general education schools in Vilnius city are researched, the possible reasons and ways of solution are presented in the work. The aim is to open and divide the problems of schools’ network reorganization and the factors interfering its implementation. The work is divided into introduction, theoretical and empirical units, conclusions and recommendations. The development of educational reform after regaining the independence, its stages and political, social and economical grounds are presented and thoroughly described in the first unit. The run and impediments of general education reform in Lithuania analyzed by scientists, educators, and independent authors presented in the second unit as well as influence of educational communities and the reform evaluation made by their representatives. In the third unit the results of quantitative and qualitative research in the context of reorganization of school network described. The author successfully presents the structural analyses of social, economical and political fields taking into account the importance of the problem for each member of the community. Qualitative research lays in the background of analyses, linking with reasons and possible ways of making decisions. Some mostly important problems of reorganization of schools network in Vilnius and other cities as well as recommendations for decision makers, educators, representatives of schools administration... [to full text]