DSpace Collection: Volume 2 Number 1
http://hdl.handle.net/10525/18
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How to Use a Desktop Version of a DBMS for Client-Server Applications
http://hdl.handle.net/10525/257
Title: How to Use a Desktop Version of a DBMS for Client-Server Applications<br/><br/>Authors: Vasilev, Julian<br/><br/>Abstract: DBMS (Data base management systems) still have a very high price for small and middle enterprises in Bulgaria. Desktop versions are free but they cannot function in multi-user environment. We will try to make an application server which will make a Desktop version of a DBMS open to many users. Thus, this approach will be appropriate for client-server applications. The author of the article gives a concise observation of the problem and a possible way of solution.Data Independence in the Multi-dimensional Numbered Information Spaces
http://hdl.handle.net/10525/266
Title: Data Independence in the Multi-dimensional Numbered Information Spaces<br/><br/>Authors: Markov, Krassimir<br/><br/>Abstract: The concept of data independence designates the techniques that allow data to be changed without affecting the applications that process it. The different structures of the information bases require corresponded tools for supporting data independence. A kind of information bases (the Multi-dimensional Numbered Information Spaces) are pointed in the paper. The data independence in such information bases is discussed.Information Supply of Geo-information Systems for the Forecasting Problem of the Avalanche Danger
http://hdl.handle.net/10525/260
Title: Information Supply of Geo-information Systems for the Forecasting Problem of the Avalanche Danger<br/><br/>Authors: Kuzemin, Alexander; Dyachenko, Olesya; Fastova, Darya<br/><br/>Abstract: This article is dedicated to the vital problem of the creation of GIS-systems for the monitoring, prognostication and control of technogenic natural catastrophes. The decrease of risks, the protection of economic objects, averting the human victims, caused by the dynamism of avalanche centers, depends on the effectiveness of the prognostication procedures of avalanche danger used. In the article the structure of a prognostication subsystem information input is developed and the technology for the complex forecast of avalanche-prone situations is proposed.Distributed Visualization Systems in Remote Sensing Data Processing Grid
http://hdl.handle.net/10525/264
Title: Distributed Visualization Systems in Remote Sensing Data Processing Grid<br/><br/>Authors: Shelestov, Andrii; Kravchenko, Oleksiy; Ilin, Mykola<br/><br/>Abstract: Implementation of GEOSS/GMES initiative requires creation and integration of service providers, most of which provide geospatial data output from Grid system to interactive user. In this paper approaches of DOS-centers (service providers) integration used in Ukrainian segment of GEOSS/GMES will be considered and template solutions for geospatial data visualization subsystems will be suggested. Developed patterns are implemented in DOS center of Space Research Institute of National Academy of Science of Ukraine and National Space Agency of Ukraine (NASU-NSAU).Grid Infrastructure for Satellite Data Processing in Ukraine
http://hdl.handle.net/10525/259
Title: Grid Infrastructure for Satellite Data Processing in Ukraine<br/><br/>Authors: Kussul, Nataliia; Shelestov, Andrii; Korbakov, Mykhailo; Kravchenko, Oleksii; Skakun, Serhiy; Ilin, Mykola; Rudakova, Alina; Pasechnik, Volodymyr<br/><br/>Abstract: In this paper conceptual foundations for the development of Grid systems that aimed for satellite data processing are discussed. The state of the art of development of such Grid systems is analyzed, and a model of Grid system for satellite data processing is proposed. An experience obtained within the development of the Grid system for satellite data processing in the Space Research Institute of NASU-NSAU is discussed.Researching Framework for Simulating/Implementating P Systems
http://hdl.handle.net/10525/255
Title: Researching Framework for Simulating/Implementating P Systems<br/><br/>Authors: Gomez, Sandra; Fernandez, Luis; Garcia, Ivan; Arroyo, Fernando<br/><br/>Abstract: Researching simulation/implementation of membranes systems is very recent. Present literature gathers new publications frequently about software/hardware, data structures and algorithms for implementing P system evolution. In this context, this work presents a framework which goal is to make tasks of researchers of this field easier. Hence, it establishes the set of cooperating classes that form a reusable and flexible design for the customizable evaluation with new data structures and algorithms. Moreover, it includes customizable services for correcting, monitoring and logging the evolution and edition, recovering, automatic generating, persistence and visualizing P systems.Delimited Massively Parallel Algorithm Based on Rules Elimination for Application of Active Rules in Transition P Systems
http://hdl.handle.net/10525/268
Title: Delimited Massively Parallel Algorithm Based on Rules Elimination for Application of Active Rules in Transition P Systems<br/><br/>Authors: Javier Gil, Francisco; Fernández, Luis; Arroyo, Fernando; Tejedor, Jorge<br/><br/>Abstract: In the field of Transition P systems implementation, it has been determined that it is very important to determine in advance how long takes evolution rules application in membranes. Moreover, to have time estimations of rules application in membranes makes possible to take important decisions related to hardware / software architectures design. The work presented here introduces an algorithm for applying active evolution rules in Transition P systems, which is based on active rules elimination. The algorithm complies the requisites of being nondeterministic, massively parallel, and what is more important, it is time delimited because it is only dependant on the number of membrane evolution rules.Static Analysis of Usefulness States in Transition P Systems
http://hdl.handle.net/10525/262
Title: Static Analysis of Usefulness States in Transition P Systems<br/><br/>Authors: Alberto Frutos, Juan; Fernandez, Luis; Arroyo, Fernando; Bravo, Gines<br/><br/>Abstract: Transition P Systems are a parallel and distributed computational model based on the notion of the cellular membrane structure. Each membrane determines a region that encloses a multiset of objects and evolution rules. Transition P Systems evolve through transitions between two consecutive configurations that are determined by the membrane structure and multisets present inside membranes. Moreover, transitions between two consecutive configurations are provided by an exhaustive non-deterministic and parallel application of evolution rules. But, to establish the rules to be applied, it is required the previous calculation of useful, applicable and active rules. Hence, computation of useful evolution rules is critical for the whole evolution process efficiency, because it is performed in parallel inside each membrane in every evolution step. This work defines usefulness states through an exhaustive analysis of the P system for every membrane and for every possible configuration of the membrane structure during the computation. Moreover, this analysis can be done in a static way; therefore membranes only have to check their usefulness states to obtain their set of useful rules during execution.A Hierarchical Architecture with Parallel Comunication for Implementing P Systems
http://hdl.handle.net/10525/269
Title: A Hierarchical Architecture with Parallel Comunication for Implementing P Systems<br/><br/>Authors: Bravo, Ginés; Fernández, Luis; Arroyo, Fernando; Frutos, Juan<br/><br/>Abstract: Membrane systems are computational equivalent to Turing machines. However, its distributed and massively parallel nature obtain polynomial solutions opposite to traditional non-polynomial ones. Nowadays, developed investigation for implementing membrane systems has not yet reached the massively parallel character of this computational model. Better published approaches have achieved a distributed architecture denominated “partially parallel evolution with partially parallel communication” where several membranes are allocated at each processor, proxys are used to communicate with membranes allocated at different processors and a policy of access control to the communications is mandatory. With these approaches, it is obtained processors parallelism in the application of evolution rules and in the internal communication among membranes allocated inside each processor. Even though, external communications share a common communication line, needed for the communication among membranes arranged in different processors, are sequential. In this work, we present a new hierarchical architecture that reaches external communication parallelism among processors and substantially increases parallelization in the application of evolution rules and internal communications. Consequently, necessary time for each evolution step is reduced. With all of that, this new distributed hierarchical architecture is near to the massively parallel character required by the model.A Circuit Implementing Massive Parallelism in Transition P Systems
http://hdl.handle.net/10525/267
Title: A Circuit Implementing Massive Parallelism in Transition P Systems<br/><br/>Authors: Alonso, Santiago; Fernández, Luis; Arroyo, Fernando; Gil, Javier<br/><br/>Abstract: ransition P-systems are based on biological membranes and try to emulate cell behavior and its evolution due to the presence of chemical elements. These systems perform computation through transition between two consecutive configurations, which consist in a m-tuple of multisets present at any moment in the existing m regions of the system. Transition between two configurations is performed by using evolution rules also present in each region. Among main Transition P-systems characteristics are massive parallelism and non determinism. This work is part of a very large project and tries to determine the design of a hardware circuit that can improve remarkably the process involved in the evolution of a membrane. Process in biological cells has two different levels of parallelism: the first one, obviously, is the evolution of each cell inside the whole set, and the second one is the application of the rules inside one membrane. This paper presents an evolution of the work done previously and includes an improvement that uses massive parallelism to do transition between two states. To achieve this, the initial set of rules is transformed into a new set that consists in all their possible combinations, and each of them is treated like a new rule (participant antecedents are added to generate a new multiset), converting an unique rule application in a way of parallelism in the means that several rules are applied at the same time. In this paper, we present a circuit that is able to process this kind of rules and to decode the result, taking advantage of all the potential that hardware has to implement P Systems versus previously proposed sequential solutions.The Experience of Development and Application Perspectives of Learning Integrated Expert Systems in the Educational Process
http://hdl.handle.net/10525/258
Title: The Experience of Development and Application Perspectives of Learning Integrated Expert Systems in the Educational Process<br/><br/>Authors: Rybina, Galina; Rybin, Victor<br/><br/>Abstract: The main principles and experience of development of learning integrated expert systems based on the third generation instrumental complex AT-TECHNOLOGY are considered.Interval Prediction Based on Experts’ Statements
http://hdl.handle.net/10525/256
Title: Interval Prediction Based on Experts’ Statements<br/><br/>Authors: Lbov, Gennadiy; Gerasimov, Maxim<br/><br/>Abstract: In the work [1] we proposed an approach of forming a consensus of experts’ statements in pattern recognition. In this paper, we present a method of aggregating sets of individual statements into a collective one for the case of forecasting of quantitative variable.An Effective Method for Constructing Data Structures Solving an Array Maintenance Problem
http://hdl.handle.net/10525/271
Title: An Effective Method for Constructing Data Structures Solving an Array Maintenance Problem<br/><br/>Authors: Toni, Adriana; Herranz, Angel; Castellanos, Juan<br/><br/>Abstract: In this paper a constructive method of data structures solving an array maintenance problem is offered. These data structures are defined in terms of a family of digraphs which have previously been defined, representing solutions for this problem. We present as well a prototype of the method in Haskell.Knowledge-Based Approach to Document Analysis
http://hdl.handle.net/10525/265
Title: Knowledge-Based Approach to Document Analysis<br/><br/>Authors: Sidorova, Elena; Zagorulko, Yury; Kononenko, Irina<br/><br/>Abstract: The paper presents an approach to extraction of facts from texts of documents. This approach is based on using knowledge about the subject domain, specialized dictionary and the schemes of facts that describe fact structures taking into consideration both semantic and syntactic compatibility of elements of facts. Actually extracted facts combine into one structure the dictionary lexical objects found in the text and match them against concepts of subject domain ontology.Management of Information on Program Flow Analysis
http://hdl.handle.net/10525/261
Title: Management of Information on Program Flow Analysis<br/><br/>Authors: Knyazeva, Margarita; Volkov, Dmitry<br/><br/>Abstract: The article proposes the model of management of information about program flow analysis for conducting computer experiments with program transformations. It considers the architecture and context of the flow analysis subsystem within the framework of Specialized Knowledge Bank on Program Transformations and describes the language for presenting flow analysis methods in the knowledge bank.Hardware-based and Software-based Security in Digital Rights Management Solutions
http://hdl.handle.net/10525/270
Title: Hardware-based and Software-based Security in Digital Rights Management Solutions<br/><br/>Authors: Nickolova, Maria; Nickolov, Eugene<br/><br/>Abstract: The main requirements to DRM platforms implementing effective user experience and strong security measures to prevent unauthorized use of content are discussed. Comparison of hardware-based and software-based platforms is made showing the general inherent advantages of hardware DRM solutions. Analysis and evaluation of the main flaws of hardware platforms are conducted, pointing out the possibilities to overcome them. The overview of the existing concepts for practical realization of hardware DRM protection reveals their advantages and disadvantages and the increasing demand for creation of multi-core architecture, which could assure an effective DRM protection without decreasing the user’s freedom and importing risks for end system security.