memory
SERIA C
Inginerie Electrică și Informatică
Excelență în Cercetare
Din 1929
Arhiva Online
Ani
Piecewise linear approximation of logarithmic image processing models for dynamic range enhancement
person
Corneliu Florea, Constantin Vertan
It has been proven that Logarithmic Image Processing (LIP) models provide\r\na suitable framework for visualizing and enhancing digital images acquired by\r\nvarious sources. The underlying initial reason for derivation of such models has\r\nbeen the necessity to deal with multiplicative...
A method for real-time emulation of genetic algorithm-optimized controllers
person
Nicolae Necula
This paper describes a Genetic Programming (GP)-based approach for the\r\nreverse engineering of Genetic Algorithm (GA)-optimized controllers, allowing the\r\ndesigner to emulate and implement in real-time the behavior of such controllers.\r\nThe method is illustrated by the experimental results...
WiMAX 802.16 network – secure communications
person
Cãtãlin-Teodor Dogaru, Teodor Petrescu
“Worldwide Interoperability for Microwave Access” (WiMAX) represents\r\none of the most important technologies of the moment when we are talking about\r\nproviding Broadband Internet using wireless connections. As a wireless protocol,\r\nWiMAX has an additional set of security...
Microcontroller-based electronic module for controlling mechatronic systems
person
Andrei Drumea, Paul Svasta
The paper presents design and implementation of a single chip electronic\r\nmodule for industrial control based on 16 bit RISC microcontroller with large\r\nresources of memory and peripherals. The module was tested and special software\r\nwas developed for a mechatronic application - an electro...
Lossless compression tool for limited number of colors
person
Radu Rãdescu
The objective of the ICompress tool is to study the compression behavior in\r\nreal situations with large data sequences for images with limited number of colors.\r\nBecause the existing standards do not offer enough flexibility, and the\r\nimplementation of some compression and decompression...
Simulation of Fresnel lenses and binary phase gratings with beam propagation method
person
Mihai Kusko, Dana Cristea, Paul ªchiopu
In this paper are presented the simulation results obtained with BPM Beam\r\nPropagation Method regarding two types of diffractive optical elements: Fresnel\r\nlenses and binary phase gratings. A comparison has been done between theoretical\r\nresults and the results obtained by simulation in...
Impact of using upper layers security techniques in Ad Hoc wireless networks
person
Jalal Frihat, Florica Moldoveanu, Alin Moldoveanu
Ad hoc networks are a new wireless networking technology. They have\r\ntremendous usage in commercial applications. One main challenge in design of ad\r\nhoc networks is their vulnerability to various security attacks.\r\nIn this paper, we analyze the threats on ad hoc network faces and the...
On-line analytical mining for advanced business intelligence solution
person
Marius Guran, Aref Mehanna, Bilal Hussein
Data mining (DM) deals with the proactive process of searching and\r\ndiscovering the patterns in the data and present it in a more predictable and\r\nuseful format. It discovers the hidden knowledge within the information which is\r\nnot possible with traditional relational or on-line...
Feedback control systems synthesis by using the root locus
person
Florin Stratulat
Feedback control systems designing has the objective of fulfilling a series of\r\nperformance indexes of the dynamic and stationary regime: percent overshoot,\r\nsettling-time, steady-state error. In this article is presented a feedback control\r\nsystems designing procedure on the basis of the...
The control “by mathematical model” of a heat exchanger used for cooling the cracked gas in an ethylene technological unit
person
Marian Romeo Catana
The approach of the problems regarding the research, design and control in\r\nthe chemical technologies field with the help of the electronic calculation technique\r\nhas become for several years a characteristic feature of the work methodologies,\r\nand its efficiency is nowadays...
The architecture of an expert measurement system for the dynamic modeling of the stock market
person
Dan Niþescu
In the research activity framework “Expert Measurement System for the\r\nDynamic Modeling of the Stock Market” I have been seeking the understanding and\r\nformalization of the stock market transactions [6] and to realize a Dynamic Model\r\nwhich implements that understanding. The...
Human common wart removal: a FEM model for cryosurgery procedure
person
Sebastian Faur, Alexandru Morega
Common wart is a type of infection caused by a virus from the human\r\npapilloma virus (HPV) family. These benign tumors can be removed by medical\r\nprocedures like classic surgery methods, electrical cauterization, cryosurgery, and\r\nlaser surgery. This paper presents a model and numerical...
Analytical computation method for electrodynamic forces acting over electrical transformer windings
person
Ioan-Dragoº Deaconu, Aurel-Ionuþ Chirilã, Constantin Ghiþã, Valentin Nãvrãpescu, Gianfranco Chicco
Different methods are used at present to compute the short-circuit\r\nelectrodynamic forces exerted over the windings of three-phase electrical\r\ntransformers. Methods giving quite accurate results (e.g., the finite element method)\r\nrequire significant computing resources and computation...
Experimental investigation on mass loss, ignition time and flame behaviour of biomass in HTAC furnaces
person
Ramona Dinu, Adrian Badea, Tiberiu Apostol, Cosmin Mãrculescu, Eduard Minciuc, Radu Kuncser
This paper outlines some of the key issues currently being debated regarding\r\nthe combustion of biomass material (wood pellets) within the high temperature air\r\ncombustion technologies (HTAC). An experimental study was performed in order to\r\nevaluate the combustion behavior when some...
Mechanical wear of automotive connectors during vibration tests
person
Rochdi El Abdi, Noureddine Benjemaa
Impact fretting of connectors was studied in the literature, but none of these\r\nstudies is completely satisfactory for finding the relation between the electrical\r\ncontact and wear rate.\r\nThe main objective of this work is to find and establish a correlation between\r\nwear, electrical...
Applying Petri net formalism in modeling of monthly test of valve from ecc system of CANDU 600 nuclear power plant
person
Marilena-Luminiþa Bedreagã, Basarab Guzun
For human reliability analysis, as part of probabilistic safety analysis, the\r\ninternational regulatory commission has developed the specific guides and\r\nprocedures to perform such assessment [1-2-3]. The paper presents the modality to\r\nperform human reliability quantification using Petri...