Nicolae Balcescu, Romania

Petru Maior University of Targu-Mures

www.upm.ro/
Nicolae Balcescu, Romania

The Petru Maior University of Târgu Mureş, Romania, is a university founded in 1960. Wikipedia.

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German-Sallo Z.,Petru Maior University of Targu-Mures
IFMBE Proceedings | Year: 2017

HRV signals can be viewed as discrete time series and treated as well through accepted mathematical procedures in order to find specific properties. These mathematical procedures can be linear or non-linear. Lately, non-linear analysis methods brought new and valuable results in HRV analysis and prediction. This paper deals with approximate entropy and sample entropy calculations in order to find unrevealed properties of these signals. The used signals are obtained from the MIT-BIH Long-term ECG database. The aim of this paper is to measure information theory based parameters as different entropies for different signals to emphasize non-linear dynamics in HRV in order to help cardiology specialists. © Springer International Publishing AG 2017.


Simon M.,Petru Maior University of Targu-Mures
Procedia Engineering | Year: 2017

This paper describes the research, design and construction of a viable experimental pneumatic driven vehicle. The main goal is to find ways to drive efficient by using alternative energy, not necessary cheaper, but more environmental friendly in increasing polluted metropolis. This is done by taking the emission source from the vehicle's tail pipe to the central electrical generating plant. Emission control measures at a central generating plant may be more effective and less costly than treating the emissions of widely dispersed vehicles. Where low emissions sources are available like: aeolian, water, solar, and nitrogen byproducts; net production of pollutants can be reduced. The background results used in this study are obtained by designing, building and testing five experimental configurations of compressed-air/gas vehicles. This study presents the latest one of these five vehicles. © 2017 The Authors.


Crainicu B.,Petru Maior University of Targu-Mures
Procedia Engineering | Year: 2017

Stream ciphers encrypt individual characters of a plaintext message one at a time, using an encryption scheme which varies with time. Stream ciphers are commonly classified as synchronous or self-synchronizing. As a general rule, a stream cipher consists of two parts: a key schedule algorithm and a keystream generator. Most research and cryptanalyses of stream ciphers are carried out separately for the two parts, but it is still important, mainly for security reasons, to consider integration aspects and implications between the key schedule algorithm and the keystream generator. Therefore, the paper proposes an unified formal model for synchronous and self-synchronizing stream cipher algorithms from which are derived formal models for both types of stream ciphers. © 2017 The Authors.


Moldovan L.,Petru Maior University of Targu-Mures
Procedia Engineering | Year: 2017

This paper presents the eQvet-us practice set composed of an implementation guide and a self diagnostic tool supporting implementation of the new eQvet-us framework that contains 61 indicators based on the 3 pillars of sustainable development: social, economic and environmental. The implementation guide is a series of 13 implementation steps organized in 5 stages, in a cycle arrangement explaining how to use the tools for the implementation of the eQvet-us framework. The self diagnostic tool is a table with questions derived from the indicators of the framework that are answered by evaluators and then evaluated on a scale with 4 levels. A quality indicator is calculated which is rated by means of the quality scale. It provides a general overview about organization's state in per cent, and further evaluation can be done on each indicator group in order to know the strengths and weaknesses of the organization and to develop an improvement plan. The employment of eQvet-us practice set in a VET organization is presented. The results can be used to develop sustainability policies and improve internal sustainability performance. © 2017 The Authors. Published by Elsevier Ltd.


Cazacu R.,Petru Maior University of Targu-Mures
Procedia Engineering | Year: 2017

Mutation is the most important Genetic Algorithms operator, allowing them to thoroughly explore the design space of an optimization problem. If designed correctly it also allows for the exploitation of promising solutions, task usually attributed to crossover. This study compares the performance of three classic mutation operators: uniform, polynomial and Gaussian. The tool used is the OOGA framework which implements an improved and unified variant of the mutation operators. GA performance is evaluated on a benchmark structural optimization problem using three criteria: accuracy, reliability and efficiency. The optimum configuration of each operator is also explored by varying mutation parameters over a range of possible values. Overall the study is aimed at the optimization practitioners, offering them the means to make informed decisions about the right mutation operator and its setting for particular problems. © 2017 The Authors.


Mocian I.,Petru Maior University of Targu-Mures
Procedia Engineering | Year: 2017

This paper aims to present a solution for the administration of a budget execution with the aid of an IT application. The application was designed to meet all the legal bases and procedures required in the management of a higher education institution budget. Thus, the budget is viewed both from the perspective of the calendar year, being broken down for each trimester, and from the perspective of expenditure types, by assigning expenses to different domains. As a result, any expenditure is preceded by the verification of the current budget status. The software is written in VBA-Excel, taking advantage of the powerful tools offered by this platform and also of the familiarity of end users to the well-known application. © 2017 Published by Elsevier Ltd.


Petrovai D.M.,Petru Maior University of Targu-Mures
Procedia Engineering | Year: 2017

The subject of general theory of convergence is to study, if possible, the behavior of a class of algorithms, particularly that the algorithms differ in most cases by details of implementation. This leads naturally to a general pattern in which algorithms or classes of algorithms are represented by multifunctions, i. e. the maps. An algorithm is defined by a map, which associates to each point xk already know a new point xk+1 = A(xk),. The asymptotic convergence describes how fast the sequence {xk } could arrive to an optimal solution if exists. © 2017 The Authors.


Simon M.,Petru Maior University of Targu-Mures
Procedia Engineering | Year: 2017

This paper describes the research, design and construction of an alternative energy driven pneumatic experimental vehicle. The main problem studied is to find a gas consumption optimization method by relating the characteristics of the gas, with the pneumatic and mechanical parts of the system. The results are used to build an actual working pneumatic, one person, vehicle that competes in European alternative energy competitions. The method and results can be used mainly in alternative energy vehicle development or even in industrial factory applications for lowering air consumption thus minimizing electrical consumption. © 2017 The Authors.


Agoston K.,Petru Maior University of Targu-Mures
Procedia Engineering | Year: 2017

This paper presents studies about the transient state of circuits and the behaviour of a transformer at on/off switching. The transient state is a short event of energy modification in a system caused by a change in state. This energy variation produces impulses which propagate through the network and influence or can even destroy other devices. Because there are a lot of devices operating in switching mode, it is important to study the transient state. To study and model the transient state differential equations are written for the circuits. This article presents the mathematical base of the transient state and the types of response to it. To create a simple model, state parameters and transfer function were used. An important circuit element is the transformer which has a nonlinear characteristic caused by the magnetic coil material. The equivalent circuit for a real transformer is presented with and without load connected to the output. The differential equations were written using the equivalent circuit. The behaviour of the transformer was studied while functioning in an open circuit. The transfer function is deduced when a load is connected to the output. The step and sin response are studied in different cases, and values of the load. © 2017 The Authors.


Grant
Agency: European Commission | Branch: FP7 | Program: MC-CIG | Phase: FP7-PEOPLE-2013-CIG | Award Amount: 100.00K | Year: 2014

Modern Networked Critical Infrastructures (NCIs), e.g. the electrical grid, rely on Information and Communication Technologies (ICT) for their operation since ICT can lead to cost reduction as well as greater efficiency, flexibility and interoperability between components. In the past NCIs were isolated environments and used proprietary hardware and protocols, limiting thus the threats that could affect them. Nowadays, with the adoption of Commercial Off-The-Shelf (COTS) ICT, NCIs are exposed to significant cyber threats that can lead to economical and human losses. To address the aforementioned issues, this project aims at elaborating novel holistic methodologies for the design of security and resilience-aware ICT infrastructures for NCIs. The project will develop state-of-the-art techniques and tools to aid engineers in designing secure and resilient industrial ICT-based installations. The novelty of the project consists in the fact that it will fuse together the cyber and physical dimensions of NCI, an important aspect that is missing from existing approaches. The project will create novel NCI network design techniques by solving multi-criteria optimization problems that take into account several aspects such as NCI design standards, e.g. NIST SP 800-82 and NERC CIP 002-009, resilient operation of physical process, but also installation-specific information, e.g. geographical aspects. The project will also provide more effective protection mechanisms, e.g. cyber-physical Intrusion Detection Systems, by combining data from cyber and physical sensors. The proposed research lies in the context of the European Programme for Critical Infrastructure Protection (EPCIP), the Critical Information Infrastructure Protection (CIIP) action plan and the Digital Agenda for Europe (DAE) by addressing key security and resilience issues of NCIs that will ultimately lead to the better protection of existing and future Critical Infrastructures.

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