Arhivă — Seria C

1

PRACTICAL RANGE AGGREGATION, SELECTION AND SET MAINTENANCE TECHNIQUES

Mugurel Ionuþ ANDREICA, Nicolae ÞÃPUª

In this paper we present several new and very practical methods and techniques for range aggregation and selection problems in multidimensional data structures and other types of sets of values. We also present some new extensions and applications for some fundamental set maintenance problems.

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2

PROCESS SIMULATOR USING PLC TECHNOLOGY

Ioana FÃGÃRêAN, Sergiu St. ILIESCU, Iulia DUMITRU

The implementation and the achievement of a Process Simulator can replace a vast number of expensive system or function models. The simulation and automation of physical processes reduce the costs and the amount of time needed for deployment. The designed system can be used to simulate, project and train the programmin…

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3

ACQUISITION, PROCESSING, AND COMMUNICATION MODULE OF A WSN-BASED SYSTEM FOR ENVIRONMENT MONITORING

Dan POPESCU, Radu DOBRESCU, Constantin VASILESCU, Maximilian NICOLAE

The paper presents the architecture of a wireless sensor network (WSN) and the hardware/software structure, which was developed by authors, for the intelligent mobile sensor node, the central element of this network. The structure of intelligent mobile sensor node ensures image and data acquisition, processing, communi…

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4

SOLUTIONS BASED ON GIS TECHNOLOGY IN COMPONENTS OF URBAN MANAGEMENT APPLICATIONS

Liliana DOBRICÃ, Traian IONESCU, Leonard DOBRICÃ, Sofia Elena COLESCA

This article describes components of urban management applications integrating GIS-based technology. The main contribution is the synthesis of functionality of several GIS –based components identified in existent implemented solutions. Solutions of various problems are required by the needs of integrated information sy…

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5

A MEANS OF ENHANCING STORAGE RELIABILITY FOR PEER-TO-PEER NETWORKS

Voichiþa IANCU

Peer-to-peer networks are ideal for storing replicated data, in order to be able to rapidly and transparently retrieve it, wherever we are. A main issue concerning these distributed systems is to replicate critical pieces of data in a persistent manner. It is the issue we are addressing in this paper, by proposing a su…

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6

INTEGRATING 3D QUALITY CONTROL FUNCTION INTO AN AUTOMATED VISUAL INSPECTION SYSTEM FOR MANUFACTURING INDUSTRY

Anamaria DOGAR

This paper presents an integrated quality control system for manufacturing industry. The proposed system combines several components in order to provide an efficient solution for complex realtime measurements tasks: image processing system which can be adapted to specific requirements, monochrome video cameras and a la…

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7

THE DRIFT/DIFFUSION RATIO OF THE MOS TRANSISTOR DRAIN CURRENT

Sabin EFTIMIE, Adrian RUSU, Adrian - Mihai IONESCU

The paper presents a new method to evaluate the ratio between the two components of drain current in MOS transistors: drift and diffusion. By setting certain limits for this ratio, the moderate inversion region can be delimited in transfer electrical characteristics. The limits of the moderate inversion give the possib…

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8

IN – TECH – TRANSFER BASED NETWORK. CASE STUDY

Ioan Dan FILIPOIU, Paul SVASTA, Nicoleta CÃRUÞAªU, Dragoº Daniel Ion GUÞÃ, Irina GEANTÃ, Cristian Gabriel ALIONTE

The information network developed through the IN-TECH-TRANSFER project is aimed to support the best exploitation of existing market opportunities, as far as innovation and technological transfer are concerned. For a successful technological transfer, the final goal should be market supply of products, technologies and …

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9

FAST CONSTANT FRACTION DIFFERENTIAL DISCRIMINATOR FOR POSITRON LIFE-TIME SPECTROSCOPY

Paul ªCHIOPU, Dorin DUDU, S. NITIªOR

In this paper aspects related to design and realization of a practical solution for providing timing information from analogue signals with different amplitudes as used in life time spectroscopy of positrons in solids, are discussed. The operating principle is presented together with its practical implementation as wel…

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10

POWER AMPLIFIER MODELING FOR MODERN COMMUNICATION SYSTEMS

Ovidiu LEULESCU, Adrian TOADER, Teodor PETRESCU

The paper introduces a new method to model power amplifier used for communication systems. The algorithm implements a time domain analysis and comparing with existing methods is based on using an OFDM signal as excitation. The method advantages are represented by the ability to model a quasi-memoryless nonlinear behavi…

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11

MEASURING THE USER-PERCEIVED QUALITY FOR VoIP APPLICATIONS IN ENCRYPTED WIRELESS NETWORKS

Mihai IVANOVICI, ªtefan SAVU

The user-perceived quality was measured for a VoIP application, in the case of an encrypted wireless network and the maximum number of parallel VoIP calls that can be initiated, while the quality of the speech signal is at least acceptable, was experimentally determined. The PESQ score proposed by ITU was used to objec…

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12

DESIGN AND SIMULATION OF ELECTROOSMOTIC DRIVEN FLOW IN CROSS CHANNELS

Oana Tatiana NEDELCU, Raluca MULLER, Hans G. KERKHOFF, Robert W. BARBER

A micro-electronic fluidic (MEF) system was designed and simulated. The system consists in cross-channels where the fluid flow is controlled by electroosmotic effect. Electroosmotic simulations were performed to characterize the fluidic Field Effect Transistor (FlowFET) device under fault-free conditions. The FlowFET …

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13

INVESTIGATING THE CHANGE OF THE HIERARCHICAL PATTERN OF GENE EXPRESSION IN THE NORMAL AND PARKINSON\\\\\\\'S BRAIN USING A COMBINATORIAL OPTIMIZATION BASE

Mou\\\\\\\'ath HOURANI, Pritha MAHATA, Ibrahiem M. M. El EMARY

Previous works on Parkinson\\\\\\\'s disease (PD) mainly focused on genes differentially expressed between the anterior and the posterior sections of the brains of a normal mouse and the one with PD. However, no work has been done in finding a hierarchical pattern of gene expression between the different regions of a b…

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14

INFLUENCE OF THE SURFACE DEFECTS ON THE ABSORPTION/RESORPTION CURRENTS IN POLYETHYLENE INSULATIONS

Cristina STANCU, Petru V. NOTINGHER

The defects on the surfaces or inside of medium and high voltage cables’ insulations determine a local increase of the electric field in their vicinities. This leads to the reduction of the partial discharges and electrical and water trees inception voltages, respectively to the intensification of the degradation proce…

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15

INTRATUMORAL TEMPERATURE MONITORING

Marius D. NEAGU, Alexandru M. MOREGA, Laura MOGOª

Temperature screening in tumor tissues is an invasive procedure requiring contact with the tumor zone of patient, while it offers a useful approach to the diagnosis and treatment (as therapeutic aids) of many type of cancer. Temperature screening has the ability to detect the chemical and blood vessel changes in pre-ca…

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16

CONTRIBUTIONS TO THE MONITORING’S OPTIMIZATION OF THE INSTALLATION FOR TRITIUM SEPARATION FROM TRITIATED HEAVY WATER

Carmen Maria MORARU, Gabriel IONESCU

Paper aim is to set up contributions to the development and improvement of information system for control, supervising and ensuring safety in operation to an experimental pilot installation for the separation of tritium from tritiated heavy water, resulting in nuclear reactors used for electrical energy. The pilot plan…

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17

MODELING THE SOFT MAGNETIC MATERIALS WITH HIGH PERMEABILITY IN A LARGE RANGE OF FREQUENCIES

Lucian PETRESCU, Horia GAVRILÃ

Soft magnetic materials with high magnetic permeability are common used in electromagnetic devices working in a large range of frequencies. Therefore, it is important to know the behavior of these materials from DC to MHz frequencies. The aim of this paper is to model the behavior of the soft magnetic materials in high…

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18

METHODS OF CALIBRATION AND CHARACTERIZATION OF TEMPERATURE CONTROLLED ENVIRONMENTS

Mihail Leonard DONA

One of the important problems of today’s temperature-controlled environments users is to establish with accuracy the metrological characteristics of those temperature-controlled environments. Many industries requires this capability, so it is necessary to develop methods for calibration and metrological characterizatio…

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19

HEAT TRANSFER BY THE SIDE WALL OF AN ALUMINUM ELECTROLYSIS CELL

Marin V. PETRE, Alexandru M. MOREGA

This paper presents the heat transfer by the side-wall of an electrolysis cell in ALRO Slatina plant. Because internal heat generation increases with the electrical power density, adequate ways and means of dissipating the heat in excess must be considered. One of the solutions consists in redesigning the current cell …

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20

COMPARATIVE ANALYSIS OF COAL, NATURAL GAS AND NUCLEAR FUEL LIFE CYCLES BY CHAINS OF ELECTRICAL ENERGY PRODUCTION

Adrian Alexandru BADEA, Irina VODÃ, Cristian Florian DINCÃ

The main objective of the paper consists in comparing the chains of electrical energy production from coal, natural gases and uranium from the point of view of their environmental impact. \r\nFor a complete study of the three chains, inventory, impact, and sensitivity analyses have been used. Thus, the main pollutants …

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21

VOID REACTIVITY EVALUATION USING HAFNIUM ABSORBER IN ADVANCED CANDU FUEL CELLS

Iosif PRODEA, Andrei RIZOIU, Ilie PRISECARU, Daniel DUPLEAC

This paper analyzes the Hafnium based burnable absorber influence on Void Reactivity (VR) for a proposed ACR-1000 cell design. The calculations were performed using an updated version of the WIMS code and also the newly ENDF/B-VII based WIMS library. The VR decreases with respect to void fractions but also increases as…

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22

ENVIRONMENTAL IMPACT QUANTIFICATION OF THE COGENERATION SYSTEMS – CASE ANALYSIS

Roxana PÃTRAªCU, Cora GHEORGHE

To assess the environmental impact of the energy production for an already existent source, we have applied a case study to determine the effects scores of the environmental impact of one CHP.

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23

THEORETICAL AND EXPERIMENTAL ASSESSMENT OF STATIONARY AND DYNAMIC RUNNING OF ONE FLAT PLATE SOLAR COLLECTOR

Horia-Ionuþ PETCU, Adrian BADEA

This paper aims to evaluate the performance of a solar flat plate collector in real outdoor conditions. For this purpose, it has been built a pilot installation that allows the construction of solar panels characteristics. Unlike the models in the current standards, the mathematical model presented in this paper go bey…

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24

A SHORT NOTE ON THE OPPORTUNITY OF USING THE ADABOOST ALGORITHM IN ELECTRICAL POWER SYSTEMS

Ioana PISICÃ, Petru POSTOLACHE

Boosting proved its capabilities in enhancing machine learning routines and have been successfully applied in several real-life applications. However, only two applications in power systems studies have been reported so far. This short note paper shows the possibility of using Boosting on larger scale in power systems …

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