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Benta D.,Center for Science and Technology Bucharest | Benta D.,Agora University of Oradea | Rusu L.,Babes - Bolyai University | Manolescu M.-J.,Agora University of Oradea
International Journal of Computers, Communications and Control | Year: 2017

This paper presents a Workflow Management System (WfMS) for procurement process automation in road pavement maintenance and management. It fits information infrastructure for monitoring and maintenance of pavements and roads. Through the two roles of administrator and major users (builder and subcontractors), the solution models the entire process. This way, risks of exceeding allocated budget, time consuming tasks, overcoming deadline, and time consuming quality control, as main issues in risk management, are reduced and controlled. © 2006-2017 by CCC.

Negulescu A.E.,Polytechnic University of Bucharest | Negulescu S.C.,Lucian Blaga University | Dzitac I.,Aurel Vlaicu University | Dzitac I.,Agora University of Oradea
International Journal of Computers, Communications and Control | Year: 2017

In order to balance the preference of the artificial entities towards exploration or exploitation (in their transition rule), a novel technique is proposed for replacing the random function used by the classical Ant Colony Optimization (ACO) algorithms for solving the Traveling Salesman Problem (TSP). The proposed Beta Distribution function (B), or random. betavariate(a, b) has the proven capability (depicted through test-runs) of influencing the algorithm's solution quality and convergence speed. Consequently, this paper will introduce in the related work section the classical ACO algorithm, with a focus on the transition rule used for choosing the next node in the problem's associated graph, followed by the related work on this topic, and it will continue with the introduction of the B function which will be presented both from a theoretical and practical perspective in relation with the scope: balancing between exploration and exploitation in order to improve the performance of the ACO algorithm for the TSP. The paper concludes that the B-EAS has the ability to find better solution than EAS for a set of benchmarks from the TSPLib library. © 2006-2017 by CCC.

Brasoveanu A.,Lucian Blaga University | Manolescu A.,Agora University of Oradea | Spinu M.N.,Aurel Vlaicu University
International Journal of Computers, Communications and Control | Year: 2010

Watching the evolution of the Semantic Web (SW) from its in-ception to these days we can easily observe that the main task the developers face while building it is to encode the human knowledge into ontologies and the human reasoning into dedicated reasoning engines. Now, the SW needs to have efficient mechanisms to access information by both humans and arti-ficial agents. The most important tools in this context are ontologies. The last years have been dedicated to solving the infrastructure problems related to ontologies: ontology management, ontology matching, ontology adoption, but as time goes by and these problems are better understood the research interests in this area will surely shift towards the way in which agents will use them to communicate between them and with humans. Despite the fact that interface agents could be bilingual, it would be more efficient, safe and swift that they should use the same language to communicate with humans and with their peers. Since anthropocentric systems entail nowadays multimodal interfaces, it seems suitable to build multimodal ontologies. Generic ontologies are needed when dealing with uncertainty. Multimodal ontologies should be designed taking into account our way of thinking (mind maps, visual thinking, feedback, logic, emotions, etc.) and also the processes in which they would be involved (multimodal fusion and integration, error reduction, natural language processing, multimodal fission, etc.). By doing this it would be easier for us (and also fun) to use ontologies, but in the same time the communication with agents (and also agent to agent talk) would be enhanced. This is just one of our conclusions related to why building generic multimodal ontologies is very important for future semantic web applications. © 2006-2010 by CCC Publications.

Nagy M.,Aurel Vlaicu University | Burca V.,Science Leoni Wiring Systems SRL Arad | Butaci C.,Agora University of Oradea | Bologa G.,Agora University of Oradea
International Journal of Computers, Communications and Control | Year: 2013

Simulation is one of the main instruments within the financial techniques of modeling decisions in condition of risk. The paper compares a couple of simulation methods for Sales and their impact on the need of short term financing. For simulating the need of working capital, the original software implementation is based on the data analysis and statistical facilities of a common spreadsheet program. The case study aims at proving the utility of the software for furnishing results with three of the main known simulation methods and helping the decisional process. © 2006-2013 by CCC Publications.

Dzitac I.,Aurel Vlaicu University | Dzitac I.,Agora University of Oradea
International Journal of Computers, Communications and Control | Year: 2015

Membrane Computing is a branch of Computer Science initiated by Gheorghe Păun in 1998, in a technical report of Turku Centre for Computer Science published as a journal paper ("Computing with Membranes" in Journal of Computer and System Sciences) in 2000. Membrane systems, as Gheorghe Păun called the models he has introduced, are known nowadays as "P Systems" (with the letter P coming from the initial of the name of this research area "father"). This note is an overview of the impact in ISI WoS of Gheorghe Păun's works, focused on Membrane Computing and P Systems field, on the occasion of his 65th birthday anniversary. © 2006-2015 by CCC Publications.

Bucerzan D.,Aurel Vlaicu University | Ratiu C.,Vasile Goldis Western University of Arad | Manolescu M.-J.,Agora University of Oradea
International Journal of Computers, Communications and Control | Year: 2013

With the development of mobile devices the security issue migrates from the PC platform to this new technology. Securing confidential information on the mobile platforms has been, is and will be a topical issue for the specialists. In this paper we propose a new solution in order to provide security of digital data that is transferred through today's available platforms for communication. We developed SmartSteg application that works on Android platform and it is able to hide and fast encrypt files using digital images of MB dimension as cover. LSB steganography is combined with a random function and symmetric key cryptography to transfer digital information, in a secure manner between smartphones that run under Android. © 2006-2013 by CCC Publications.

Dzitac I.,Aurel Vlaicu University | Dzitac I.,Agora University of Oradea
International Journal of Computers, Communications and Control | Year: 2015

The aim of this survey article, dedicated to the 50th anniversary of Zadeh's pioneering paper "Fuzzy Sets" (1965), is to offer a unitary view to some important spaces in fuzzy mathematics: fuzzy real line, fuzzy topological spaces, fuzzy metric spaces, fuzzy topological vector spaces, fuzzy normed linear spaces. We believe that this paper will be a support for future research in this field. © 2006-2015 by CCC Publications.

Benta D.,Agora University of Oradea | Bologa G.,Agora University of Oradea | Dzitac I.,Agora University of Oradea | Dzitac I.,Aurel Vlaicu University
Procedia Computer Science | Year: 2014

This paper describes our experience in using e-learning platforms to support face to face instruction in academic field. We used Moodle as interactive e-learning tool to motivate students and involve them in resolving single and collaborative homework tasks. However, while many universities in the world use e-learning platforms, in our case this was for the first time used and it was a great teaching/learning experience. This paper aims to be easy to read and understand by proving the importance of using e-learning platforms in higher education. © 2014 Published by Elsevier B.V.

Felea I.,University of Oradea | Dzitac S.,University of Oradea | Vesselenyi T.,University of Oradea | Dzitac I.,Aurel Vlaicu University | Dzitac I.,Agora University of Oradea
International Journal of Information Technology and Decision Making | Year: 2014

A current modeling framework for disturbance in manufacturing systems (MS) is given by concepts like discrete-event systems, stochastic fluid models and infinitesimal disturbance analysis. The goal of modeling is to achieve control and structural and functional optimization of MS. Objective functions of these optimization models are focused on quantities which reflect the level of reliability, the level of manufactured products, the quality of products or the impact on the environment of MS with disturbances. These models do not allow a dynamic evaluation of consequences of the disturbances which appears in the operation of MS machines and also do not allow an evaluation of the evolution in time of disturbance consequence indicators. Disturbances in technological lines of MS represent local bottlenecks of production with severe economic consequences in what regards production time losses. Good estimation of disturbances dynamics can be very helpful to both technological line designers, who can optimize their projects and production managers who can minimize their losses. Our model allows a dynamic evaluation of consequences of some disturbance of machine operation in MS, using indicators based on time, energy and costs. A MATLAB software package was developed for tests. © 2014 World Scientific Publishing Company.

NAdAban S.,Aurel Vlaicu University | Dzitac S.,University of Oradea | Dzitac S.,Agora University of Oradea
2016 6th International Conference on Computers Communications and Control, ICCCC 2016 | Year: 2016

In the last years, several papers in literature have treated the multi-criteria decision making (MCDM) problems in neutrosophic environment. This approach had a starting point the fact that in many real life problems, decision makers have indeterminate, inconsistent or incomplete information about the alternatives with respect to criteria. A brief survey on the applications of neutrosophic sets in MCDM problems is proposed in this paper, hoping that, in this way, we will stimulate further studies and approaches. © 2016 IEEE.

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