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The essence of 3D object packing problem is to load a set of distinct boxes with given dimensions in containers to maximize volume utilization. The goal of this research is to support with algorithmic techniques the design of package layouts that meet the functional relationships between the parts and match market needs including cost, safety, comfort, as well as economic and environmental aspects. An analysis of 3D object packing algorithms, created by foreign authors, and commercial three-dimensional pallet packing software packages was performed in this work; also methods’ advantages and disadvantages were pointed out. A model of three-dimensional rectangular object packing into containers of the same shape was formed, and the software solving 3D object packing problems was created according to this model. The tests proved that the suggested method is effective and beneficial.

Currently there are many software systems for creating data bases widely used in the world. There were made an analysis of existing software and customer needs in this work. There were made an analysis of Object-oriented programming, CASE – computer aided system engineering, Component modeling, MS Access. To understand business environment I created Business Interaction Model, Workflow models, Use Case Model. For this purpose I used ProVision Workbench package. I created data base project. I used MS Access XP and Visual Basic, because of its stability, multipurpose, potential, good working with Windows 9*, Windows 2000, Windows XP operational systems. There were made a User Interface, including forms, reports, and queries.

Appropriate information in time has developed to a main business resource and requires the same professional management as conventional means of production. However, the huge supplies as well as the customary decentralized storage are aggravating the effective handling of information. Content management approaches to unify the administration of relevant information. There are developing a vast number of software products which aim to apply this concept. However, a clear definition of content management does not exist and thus, the market offers a variety of solutions. This master thesis analyzes content management systems which represent different aspects of content management, such as Web content management, collaboration in Intranets or management of multimedia. As a basis, general comparison criterions are developed, which orientate to the content life cycle. Examples of application areas for each system conclude the comparison.

The purpose of this project was to create the information system, using component model. Making new information systems, often the same models are building. Realizing system with component model in creating new system it‘s possible to use the old components. To describe advantages of component model information system was created for company “Vilseda”. If the created components used in future, they have been projected according to theirs types(grafical user interface, data and function requests). In analysis and synthesis information method explored UAB “Vilseda” activity, analyse outside and inside flows, according to them created data flow diagram . In project part represented inserted and derivebled information specifications. Created system DFD, and ER diagram. Information system realized in MS Access enviroment. Formed software and hardware projects. In the project prepared and presented programme‘s user‘s and programmer‘s instructions.

Analysis of already created portals, which appeal to national research and development works presentation, are made. Lacks and advantages of existing portals are overlooked and considered for prototype development. National research and development portal functions are described and solution is presented. Product was built as a specific content management system (CMS). The range of CMS products offers more than 10 different functions, but not all of them are necessity. The most useful functions are chosen and produced for this product. The need of architecture sketch occurs, when creating CMS or running a CMS-like website. Separation from structure, contents and representation issue is described and solutions are provided.

The domain of this research are CASE tools, designated for requirements engineering, which are able to generate computerized information system prototypes. The main goal of this project is to design software, which would enable to generate an IS prototype from requirements specification, created re specification method, suggested by the Information Systems department. The software is a part of a CASE tool, designed by the IS department. The CASE tool is designated for creating requirements specification and the software will provide additional functionality to it. The opportunities of computerized IS prototyping using Oracle Designer, Visual FoxPro and MS Access were analyzed. In case of Oracle Designer, in order to create a computerized IS prototype we have to go through the whole design stage. In case of DBMS Visual FoxPro and MS Access we must have a database designed. And the software for generating computerized IS prototype enables you to generate a system prototype at an early design stage and without having the system project.

Most of an e-commercial systems pay the biggest attention to the acceptance of an orders and maintenance of users ,but the process of performance of the orders ,which are done in the organization, are leaved to the employees. The target of this work was to investigate the system of control of the orders ,which would enable users of internet to make the orders and for the employees of the organization to rule those orders with the help of computer tools. It is possible to work with the investigated system in the firm where it will be implemented and it will be possible to send by internet the program for cost calculation and composition of orders. In the nearest future it would be good to expand the system,upgrade it and to create the web page of the firm.By improving the system some patterns should be included such as the map of the system,the news,perfect the leader and etc.

The aim of this work is to create an alternative IS school model and to apply it at schools. The created IS programme would allow the perfection of educational process to apply up-to-date information technologies, to accumulate the teaching and cognitive material of different subjects, to effect the management of educational institute, to execute the accounting of schoolchildren attendance and learning (in case of the created data base of school attendants), to assure the link of home-school. “Open Source” technologic – programmable means were selected for projecting and creating of the IS school: · Content Management System – CMS, which allows to administrate websites effectively, was used for creating the website and analysis. · PHP programming technologies were chosen for programming and Java Script for increasing of interactivity. · Relational DBVS MySOL was used for accounting, analysis, reports. · In order the system would function in the net the Apache WEB server is being used. · ProVision Workbench is used for the analysis of the IS data base. · Flash technologies were also used for increasing of interactivity. The IS school can be accommodated in distant server or school server giving the outer connection, or school intranet without outer connection. The connection can be established with a help of the internet browser. Possible users are an administrator, school leaders, teachers, tutors, schoolchildren and their parents. The school administration can get the very... [to full text]

Software research for learning systems with generating tasks was formulated in this document. The analogous systems were analyzed and possible solutions reviewed. By this assay, were designed tasks with generating propositions, which will resolve the problem of creating difficult tasks and improve the skills of checking. The software differences were analyzed in the plenty learning systems. The merits and demerits were determined. The best technologies for this project realization were choused. The created software system was tested and the quality analysis was made. Finally, the experimental research was transacted. Research results showed that selected methods were suited way to resolve the raised problem.

Currently there are many programs which draw drawings, but they do not count the measurements of the detales. CAD – Computer Aided Development systems widely used in the world. Three dimensional modeling systems, like AutoCAD, 3DS Max and similar are well known. Unfortunately these systems are quite complicated and expensive. It takes a lot of time and money to train company workers to use these systems. Small companies are not capable to do it. So naturally there comes demand on more simple and cheaper systems. The main objective of this project is to create low complicated small-medium size count the measurements of the detales systems, more concrete – the informational system to count differential operations punch presses, which include GOST standart presses, punches and swages. There were made an analysis of existing punch presses planning software and customer needs in this work. In these days computer graphics usage is growing extremely fast, so naturally it increases needs to use such data into databases, transferring, standardization and so on.

The main project goal is to develop the DXF reading, editing and writing software. Research goal is usage of DXF reading end editing systems, DXF structure and reading method. Existing systems are reviewed, analyzed solution of problem. The object oriented design was used to develop system. Developed DXF reading, editing and writing software is flexible for adding new graphical components, functional requirements, maintenance is simple. All of these are achieved using object oriented design system.

During the past decade the environment of learning has been changing notably due to the expansion of information and communication technologies. New forms of working appear and the improvement methods of education and skills change. Teaching with modern technologies has become an obligatory aspect of remit. Consequently, the lecturers seek for new methods of education to meet the increasing demand of students and improve the quality of education. Regarding the demand for education shift on the basis of working market, the goal of the paper is to analyze and ground the e-laboratory application for “Information processing systems” module in the laboratories. The paper analyses an idea in essence, which is crucial and modern in Lithuania as well as abroad – a new environment purposing the formation of environment in the e-laboratory. On the basis of the latter module of e-tools and e-learning systems of teaching experience in digital signal teaching course, the recommendations for its formation methodology to reach the comprehensive e-laboratory has been proposed. Hopefully, the application of e-laboratories will enable to decline the licensed software in future, meet the increasing demand of the students, grant the quality of education and organize the module for distance learning.

This work is about creation of system which allows for cable TV to manage and monitor their internet subscribers and equipment (modems, servers, routers) over database. Created system allows add remove and manage subscribers over internet browser interface. Operator can monitor each subscribers downloaded and uploaded data amount. This system automatically updates routers and servers configurations as subscriber is being added removed or edited. This system also monitors servers and routers state: traffic, packets transmitted, CPU use, system load, RAM use and disk use. Main router periodically updates database with information about each subscribers downloaded and uploaded data amount, and if subscriber has reached its data limit database server responds to this information by sending new configuration to main router for this subscriber. This system allowed company install cheaper services with restricted data amounts for subscribers and subscribers number increased about twice over a year.

Now in most CASE tools the information collected during the stage of IS cycle analysis is not used to generate the models of the designing stage. Improving CASE systems it is offered to enlarge them with an activity knowledge basis, what becomes an additional source of information to generate project model. Activity knowledge model created in the department of data systems has been specified and activity setting system has been designed and realized during the work. System design has been conducted using programming appliances: Rational Rose Enterprise Edition 2002, Microsoft Visio Professional 2002. Use Case model generating algorithms has been created on the grounds of the activity basis. UCM models storage and software needed for its functioning have been worked out. CASE activity knowledge basis ordering system has been created on the grounds of the activity meta-model worked out in the department of data systems. Realized activity knowledge ordering system is used to extend traditional CASE systems functional possibilities. Realized CASE activity knowledge basis ordering system (Visual FoxPro 7.0) lets:  To input and adjust activity knowledge – activity elements described on the grounds of work model sequences activity procedures, activity functions, information flow, material flow and users;  To relate activity processes, activity functions, simulate their hierarchy structure;  To make accounts about the content of knowledge basis;  To generate users case... [to full text]

One of IS engineering problems – are analyses and simulation, in order to define users informative needs. Activity knowledge accumulation method and part of the system has been realized grounded on workflow models. System prototype has been created to extend CASE environment activity knowledge basis. The part of the system will be directly used by analysts, who will simulate the activity of computerized organization, trying to collect and analyze users information requirements. This work is a part of the scientific research “IS engineering method grounded on knowledge” carried out in the department of IS. Information systems engineering is started by the analyses of activity area – workflow model sequences of analyzed processes are made. Workflow model sequences transforming method has been created, that checks completeness and sequence of the data collected. Such checked by created methods and located in CASE system knowledge basis activity model will be called activity knowledge structure. In the storage of CASE system professional knowledge in accumulated and collected using modified work sequence models. The completeness of the information collected is checked using professional knowledge and completeness checking algorithms – information shift, data separation elimination of the breakpoints, function structure setting and import. The activity knowledge accumulation has been programmed. Information data accumulation and completeness checking algorithms are realized... [to full text]

That is not the secret that most of health insuranse institutions are still using hand-documentation methods for information helding, processing and transmission. The research shows that about 70% of international medical transactions are accompished with the help of the telephony, fax or paper. For example, only in Lithuania this percent is the whole 100. Only in very special cases medical information exchange invokes current technical solutions. KMU centre of heart disease can be said is the beginner of the idea…The project started had to be extended to invoke all the medical Lithuanian institutions. With the help of KTU faculty of informatics the prototype for medical documents interchange was created. Having the solution of medical documentation interchange, I defined the problem area as medical information security problems. The data security problem is not the new one in the world of computer science. But this problem is very important and the new one in the world of medicine. The only one medical information fault in medicine can reason the human’s tragedy. The first my step is to define medical information security strategy. This will be accomplished by the analyzing main information security services. Having the defined strategy I will choose security technologies and will design the medical documentation security implementation. This work can be find in the analytical part of the current document. Design part of the document will show the solution of medical... [to full text]

These Master thesis are about energy objects that monitored through the distance.

Medical data exchange between medicine institutions is very important subject. In Lithuania at this time hasn’t installed united medical system which allows doctors to check patient’s case-history from all hospitals. For example abroad, in Canada for example has united medical system in all country hospitals. Canada hospitals has a lot of different medical data store systems installed, and to exchange data between them, they need to accept one united standard, which allows to get and perceive accepted data in all the country. They accepted to use HL7 standard for medical data exchange. I will try to research, can we use Canada practice in Lithuania, some data and other’s research. Our object to create HL7 system which will send HL7 message answers to HL7 message queries. All queries and answers must follow the requirements of HL7 standard. We will use KMU Heart center database which is in operation for data capture. The fact that database is in operation, adds additional data analysing. Analyzing involves how data met, the HL7 requirements and there they must be put in HL7 message. The data coding in HL7 message is defined in HL7 standard, so this part is clear. But the data exchange and events processing part lets user to take his own decisions. In the analytical part of our work we will try to touch questions about data capture from database and coding it to HL7 message. Also we will touch questions about data exchange methods, what tools or solutions must be used to... [to full text]

This work analyses Business Rule methodology and its benefits against traditional software development concepts. Business Rule methodology is observed, several methods of Business Rule classification are presented: Ross, MDC, GUIDE. The work assesses strengths and weaknesses of each model. GUIDE model is chosen for further development of Business Rules methodology. Suggested improvements of this model are presented. This work proposes improvements of GUIDE model, which includes Business Rule templates and repository schema. The benefits of using templates are analyzed and templates for structural and action assertion Business Rules are presented. The repository schema for structural and action assertion rules, which are specified using templates, is provided. The project of system, which uses Business Rule concepts and its suggested improvements, is provided. This system records and stores Business Rules in Business Rules repository. The system experiment, where proposed improvements are tested, is presented.

The past three decades has witnessed substantial progress towards the application of low-rate speech coders to civilian and military communications as well as computer-related voice applications. Central to this progress has been the development of new speech coders capable of producing high-quality speech at low data rates. Most of these coders incorporate mechanisms to: represent the spectral properties of speech, provide for speech waveform matching, and "optimize" the coder's performance for the human ear. A number of these coders have already been adopted in national and international cellular telephony standards. The objective of this paper is to provide a tutorial overview of speech coding methodologies with emphasis on those algorithms that are part of the recent low-rate standards for voice applications. Although the emphasis is on the new low-rate coders, we attempt to provide a comprehensive survey by covering some of the traditional methodologies as well. The paper starts with a historical perspective and continues with a brief discussion on the speech properties and performance measures. Then I proceed with descriptions of waveform coders, linear predictive vocoders, and analysis-by-synthesis linear predictive coders. At the end the system for computer-based stenographing is presented. Quality research and ways how to improve this system will be provided.

It is very important to reduce products and facilities costs for companies. The actual washing costs minimization problem is analysed in this work. The main aim of this work – to analyse the washing costs minimization problem and develop the application for minimal washing costs finding. Mathematical model of washing costs was created (for this is statistics experiment planning theory used). This model and results of multiregressional analysis were compared.

The workspace design is usually treated as a part of the user interface design without paying a lot of attention to a workspace design. Such approach works rather well when small IS, which consists of tens of functions and only few actors, is being designed. However, in such case finding optimal and fast solutions can become problematic when IS workspace is being designed for large scale IS. The purpose of this work is to present a model of computerised workspace functionality specification, using information flows specification. The creation of workspace structure is based on function hierarchy model. After making analysis of computerized workspace design and functions modeling, the function hierarchy modeling technique and process of building computerized workspace should be presented, implemented and verified. Also the CASE tool for function modeling and structure of workspace design is described.

LieMSIS PDB is the system designed for gathering of scientific publications data and for statistical analysis of such data. The system allows not only analysis of scientific publications bibliographical information (sort of publication, year of publishing, etc.) but it also allows to account administrative data of the authors (position in the institution, degree and etc.). This document contains overview of LieMSIS PDB development process, LieMSIS PDB evolution from the first version to the current version and statistical data of LieMSIS PDB usage.

The essence of this work is employment of IT and mathematical methods in development of remote applications with dynamically changing media. Analysis and practical use of methods are based on instances of internet games. The main groups and peculiarities of rapidly growing entertainment form – internet games – and programming technologies and languages used in development of such games are presented. Multiplayer multisession internet games with persistent world are analyzed. The main purpose of work is to highlight such games' dynamic aspects and implementing solutions. Differences and similarities of dynamics in real time games and turn-based games are highlighted with aim to integrate strength of both groups. Goals of work are analysis of methods and implementation of factors which influence game dynamics: user activity synchronization, persistent and changing game environment, data streaming. Implementation solutions are submitted in form of multiplayer real time internet game "Žvejyba".

This article examines the Internet software design technology using Lotus Notes. Current method is based on architecture decomposition in to separate program logics, data, user interface and graphics layers. The practical value of these methods is revealed – increased performance and product support simplicity.

Tabu search based algorithms are among the widely used heuristic algorithms for combinatorial optimization problems. In this project, we propose an improved enhanced tabu search algorithm for the well-known combinatorial optimization problem, the quadratic assignment problem (QAP). The new algorithm was tested on a number of instances from the library of the QAP instances  QAPLIB. The results obtained from the experiments show that the proposed algorithm appears to be superior to the earlier "pure" tabu search algorithms on many instances of the QAP.

This master thesis covers re-engineering methods of legacy systems. Legacy system is an old system, which is hardly compliant with modern technologies and used only because it has become an integral part of organization business process support during the long period of its maintenance. These systems are large, monolithic and difficult to modify, and cost and risk of their replacement are difficult to predict. The science of software engineering offers an incremental modernization of information systems applying the re-engineering of legacy software. The main goal of software re-engineering is to transform the software in the way, it would become easier to understand, maintain and re-use, at the same time preserving its useful, time trusted functions. The main re-engineering methods are source code translation, reverse engineering and data re-engineering. This thesis covers the analysis of these methods, which was made during the re-engineering of wood production and sales accounting system. The adoption and realization time rate of every method was examined. The influence of the applied re-engineering methods to the system reliability, efficiency, usability and other quality metrics is given.

The created learning program is given for students to develop their general practical skills for the use of graphical system AutoCAD 2002. The learning program is given for leraning and teaching using computer. The man van use it anywhere, where is the possibility to work with computer and learn the learning program. There are practical exercises for drawing graphical primitives; hatch and dimension commands; tools for editing graphical objestc it the AutoCAD 2002 learning system. The learning system is divided into different parts by AutoCAD 2002 themes. The requirements: personal computer, Windows 95/98/Me/NT/2000/XP operating system and AutoCAD 2002. The learning system is created using VisualLISP progamming language.

There are many benefits to upgrading your data access layer to ADO.NET, most of which involve using the intrinsic DataSet object. The DataSet object is basically a disconnected, in-memory replica of a database. DataSets provide many benefits, but also present a few challenges. Specifically, you can run into problems related to data concurrency exceptions. I've created a simple Windows® Forms customer service application that illustrates the potential pitfalls of this particular problem. I'll walk you through my research and show you ways to overcome the data concurrency issues that arose. DataSets provide a number of benefits. For example, you gain the ability to enforce rules of integrity in memory rather than at the database level. The most important benefit of using DataSets, however, is improved performance. Since the DataSet is disconnected from the underlying database, your code will make fewer calls to the database, significantly boosting performance. As with most performance optimizations, this one comes with a price. Since the DataSet object is disconnected from the underlying database, there is always a chance that the data is out of date. Since a DataSet doesn't hold live data, but rather a snapshot of live data at the time the DataSet was filled, problems related to data concurrency can occur.

Software engineering is defined as the application of the systemic, disciplined, quantifiable approach to the development, operation, and maintenance of software. It is the application of engineering to software. The classic life-cycle paradigm for software engineering includes: system engineering, analysis, design, code, testing, and maintenance. Maintenance is needed to ensure that the system continues to satisfy user requirements. The system changes due to corrective and non-corrective maintenance. According to Martin and McClure, maintenance must be performed in order to: • Correct errors; • Correct design flaws; • Interface with other systems; • Make enhancements; • Make necessary changes to the system; • Make changes in files or databases; • Improve the design; • Convert programs so that different hardware, software, system features, and telecommunications facilities can be used. Accordingly, software must evolve and be maintained. This paper addresses the maintenance portion of PAT life-cycle. There are several improved architecture models presented witch make maintenance and evolution of PAT easier. Among the presented architecture models there is one model (with five layers) witch was adapted to the system. The new system’s efficiency was compared with the old one’s. This paper also contains a new architecture model witch could be adapted to the new systems. The main purpose of this architecture is to separate graphical user interface from system’s business logics... [to full text]

Nowadays there are lots of information systems for management of production such as CIM (Computer-integrated manufacturing systems), MRP (Material requirements planning systems), MRP II (Manufacturing resource planning systems), ERP (Enterprise Resource Planning systems). All these systems have huge possibilities. However the licence prices are enormous, the software requires big computer capacities. So they are more usable for organizations with big annual turnover. Small companies need programs which allow to collect data, store it, systematize, quickly get required information. Study object. Information system for management of clothes production orders. Study goal. To create information system for management of clothes production orders using up-to-date computer technologies. It was made analysis of organization (producing clothes) computerizing field, described functional and non-functional requirements for IS. Also made comparative analysis of information systems for management of production, project of information system for management of clothes production orders which architecture is client – server. Prepared documentation for users. Made testing and quality control. In future the functionality of the information system for management of clothes production orders can be expanded including calculations of material and production cost.

In this work was created algorithm of SA – Simulated Annealing method and GMJ – Global Minimizer for Java. GMJ it’s solution of so called frames of optimised tasks. The method of SA is a technique that has attracted significant attention as suitable for optimization problems of large scale. For practical purposes, simulated annealing has effectively “solved” the famous travelling salesman. At the heart of the method of simulated annealing is an analogy with thermodynamics, specifically with the way that liquids freeze and crystallize, or metals cool and anneal. So the essence of the process is slow cooling, allowing ample time for redistribution of the atoms as they lose mobility. This is the technical definition of annealing, and it is essential for ensuring that a low energy state will be achieved. GMJ – it’s a software solution of so called frames of global optimisation tasks. This method realizes: · algorithms of global optimisation (methods), · functions, that’s can be optimised (tasks), · objects, that’s can be showed on display (analysis). After the program was created, exhaustive inquiry of in this work realized methods was done: analysed influence of teachers, students and others different restrains multipliers to school scheduler making. The research was done using the data of college of Marijampolė. There was accomplished theoretical and experimental comparison of SA and the school schedule programs of others firms.

The identification of personality adequacy includes complete research of a person. There are various psycho diagnostic testing methods for such researches. The most testing methods are being created abroad, therefore it takes a lot of time to evaluate the results and to adapt them to the Lithuanians situation. This means that the psychologist have to make a lot of tests of different patient’s groups as well. At the moment, there is no program in Lithuania, which would be helpful by creating computerized version of tests and able to collect all data related to the patient and to the process of theinvestigation. Such program would be able to computerize confidential methods as well. All data related to the patient and the method of research, has to be protected. The information system of personality adequacy identification gives a possibility for the psychologists to register the investigative persons and the process of this investigation. It also helps to create textual and visual tests, to test the investigative persons, to accumulate the diagnosis and the experience of the applied methodic. The created system of programs helps the psychologists to work more efficiently and to generalize the date of Lithuanian’s patients groups as well. This program is going to ensure the required grade of confidentially and security of tests data.