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Browsing Articole științifice/Scientific articles by Issue Date

Browsing Articole științifice/Scientific articles by Issue Date

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  • Über die Regulierung der Kaplan Turbinen 
    Bărglăzan, Aurel (Timişoara : Tipografia Românească, 1932)
  • Quotient et reste de la division de deux polynomes 
    Alaci, Valeriu (Timişoara : Tipografia Românească, 1933)
  • On the performances of symbol ranking text compression method [articol] 
    Rădescu, Radu; Popa, Răzvan-Marius (Timişoara : Editura Politehnica, 2004)
    This paper presents an implementation of a method for text compression, first described by Shannon in 1951 and later, in 1997, by Fenwick. Unlike other compressors, which exploit symbol frequencies in order to assign shorter ...
  • Analysis of biomolecular sequences through spectral based methods [articol] 
    Mereuţă, Şerban (Timişoara : Editura Politehnica, 2004)
    In this paper we apply a few computational and visual tools, specific to digital signal processing, to the analysis of biomolecular sequences. In particular, we prove that color spectrograms can help in visually identifying ...
  • Portable PCM analyzer [articol] 
    Popa, Gheorghe Daniel; Oteșteanu, Marius-Emil (Timişoara : Editura Politehnica, 2004)
    The purpose of this paper is to find a solution to implement a portable PCM analyzer composed of two blocks: a small PCM interface module and a usual PC, which runs a graphical user interface software. The PCM interface ...
  • Excitation modeling in CELP speech coders [articol] 
    Balint, Cornel (Timişoara : Editura Politehnica, 2004)
    The introduction of CELP (Codebook Excited Linear Prediction) speech coding provided an efficient way to compress speech data to 4.8 kbps with high quality, but with the disadvantage of great computational complexity ...
  • Controller design for single phase APF circuits [articol] 
    Negoiţescu, Dan (Timişoara : Editura Politehnica, 2004)
    In the present paper is developed a small signal averaged model for a single phase APF circuit. The model can be applied to both unipolar and bipolar topologies. Based on the APF model, a controller design strategy is ...
  • Invisible watermarking for copyright protection [articol] 
    Matin, M. A. (Timişoara : Editura Politehnica, 2004)
    Due to the rapid expansion of the Internet and the overall development of digital technologies, millions of users, who are scattered all over the world, are able to use a vast number of multimedia products. Every participant ...
  • The development of a new system to measure Camber and Toe using stereo cameras [articol] 
    Toma, Liviu,; Shu, Fangwu; Ignea, Alimpie,; Neddermeyer, Werner; Schnell, Michael (Toma, Liviu, Jr.. The development of a new system to measure Camber and Toe using stereo cameras. Timişoara: Editura Politehnica, 2004, 2004)
    This paper presents a new measurement system used in car industry. The goal is to adjust the position of the front wheels of a car with respect to the axle where the wheels are mounted. For that, it is required to measure ...
  • The switching characteristics of the MOSFET driver used in the PWM control of a DC motor - a small handbook for engineers [articol] 
    Tofilescu, Pompilian; Grama, Gheorghe (Timişoara : Editura Politehnica, 2004)
    The present paper presents few issues regarding the PWM (pulse width modulation) control of a DC motor using a power MOSFET driver. There are shown the algorithms and the calculations used to determine the switching times ...
  • Designing algorithm for a new pattern descriptors set [articol] 
    Vizitiu, Constantin Iulian; Stoica, Adrian; Anton, Lucian; Iosif, Florin D. (Timişoara : Editura Politehnica, 2004)
    The choice of an appropriate pattern description method is essential for the success of the following recognition or classification process. This paper shortly presents the designing methodology proposed by the authors for ...
  • Performance evaluation of routing protocols in ad-hoc wireless networks [articol] 
    Pușchiță, Emanuel; Palade, Tudor; Şelaru, Călin (Timişoara : Editura Politehnica, 2004)
    This paper presents the efficiency of different routing protocol in few wireless ad-hoc network scenarious. The key motivation behind the analysis of routing protocols is the reduction of the routing load. High routing ...
  • Performance evaluation of single-carrier broadband transmission with Frequency Domain Equalization [articol] 
    Oltean, Marius; Vesa, Andy Răzvan; Mârza, Eugen (Timişoara : Editura Politehnica, 2004)
    One of the most challenging problems in high-rate data transmissions is to combat the inter-symbol interference introduced by the multipath propagation. Since adaptive equalization in time domain proved oftentimes to be a ...
  • New interleaver design algorithms with enhanced B.E.R. performances [articol] 
    Halunga-Fratu, Simona; Fratu, Octavian (Timişoara: Editura Politehnica, 2004)
    This paper investigates some aspects of turbo encoder and decoder parameters design effects on the overall system performances. A new interleaver structure is presented, which, combining the block and hibrid strategies, ...
  • A management service for student examination results with nomadic access [articol] 
    Cremene, Marcel; Benţa, Iulian; Chira, Ligia; Loghin, Călin (Timişoara : Editura Politehnica, 2004)
    The paper subject is related to the fields of e-learning and distance learning. We are proposing an electronic classbook with nomadic access and SMS notification. The idea is to integrate a result management system with a ...
  • State-space control structures for buck converters with/without input filter [articol] 
    Keller, Günter; Lascu, Dan Florentin (Timişoara : Editura Politehnica, 2004)
    Power supplies normally provide a constant output voltage. In most of the applications a DC/DC-converter is controlled by a voltage mode or a current mode controller. Often these controller types are combined with feed ...
  • Currents and voltages measurements using aquisition board DAQ 6024 E [articol] 
    Moraru, Simona; Faur, Daniela; Pantelimon, Brânduşa; Voina, Cătălin; Cosac, Andreea (Timişoara : Editura Politehnica, 2004)
    The program who is the subject of this paper develops many possibilities in order to facilitate reading and analysing electrical quantities (voltage, current) for analogy and digital signals. Using acquisition boards for ...
  • Shape representation and retrieval using centroid radii and turning angle [articol] 
    Mocanu, Irina Georgiana (Timişoara : Editura Politehnica, 2004)
    Among all issues related to Content Based Image Retrieval systems, retrieving images based on shapes is an important one. In the paper a contour-based approach to shape representation and similarity measure is presented. ...
  • A low dynamics fast transversal filter adaptive algorithm [articol] 
    Paleologu, Constantin; Ciochină, Silviu; Enescu, Andrei Alexandru (Timişoara : Editura Politehnica, 2004)
    This paper propose a low dynamics version of FTF adaptive algorithm using a modified form of the cost function, based on an asymptotically unbiased estimator of the mean square error. The reduced dynamics of the modified ...
  • High voltage power supply for photocopier applications [articol] 
    Petreuș, Dorin; Fărcaş, Cristian; Creţ, Călin; Hurgoi, Florin (Timişoara : Editura Politehnica, 2004)
    This paper presents a high voltage power supply, which can be used in a large variety of applications like photocopier, air cleaners, laser printers etc. Some considerations of voltage multipliers, and design equations are ...

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