Download or read book Contribution a la caracterisation des circuits de conversion analogique numerique conception et realisation d un systeme d evaluation dynamique de ces dispositifs written by Sylvie Renaud and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contribution la caract risation des circuits de conversion analogique num rique written by Sylvie Renaud and published by . This book was released on 1990 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES DISPOSITIFS DE CONVERSION DE DONNEES QUI ASSOCIENT, SUR LA MEME PUCE, CIRCUITS NUMERIQUE ET ANALOGIQUE, DOIVENT ETRE CARACTERISES PAR DES METHODES SPECIFIQUES TENANT COMPTE DE CETTE DUALITE. LE TRAVAIL PRESENTE ETUDIE SUR CES DISPOSITIFS LES METHODES DE CARACTERISATION DYNAMIQUES CORRESPONDANT A UN FONCTIONNEMENT PROCHE D'UNE UTILISATION REELLE: METHODE STATISTIQUE PAR HISTOGRAMME, METHODE SPECTRALE PAR FFT, METHODE TEMPORELLE PAR "FIT". CHACUNE DES ANALYSES POSSIBLES EST ETUDIEE SUR LE PLAN THEORIQUE, LES PARAMETRES QU'ELLES PERMETTENT DE MESURER SONT DEDUITS, ET LEURS PERFORMANCES SONT COMPAREES. UN SYSTEME DE CARACTERISATION A ETE REALISE, ET EST DECRIT: IL EST CONSTITUE D'UN ENSEMBLE INFORMATIQUE PILOTANT UN APPAREILLAGE ELECTRONIQUE RELIE AU COMPOSANT. SON ORIGINALITE RESIDE DANS LA CARTE D'ACQUISITION IMPLANTEE DANS L'ORDINATEUR ET DANS LE LOGICIEL RASSEMBLANT LES ALGORITHMES DE CARACTERISATION ET OPTIMISE POUR PROCURER UNE VITESSE DE TRAITEMENT ET UNE CONVIVIALITE MAXIMALES. DES EXEMPLES DE TESTS DE CONVERTISSEURS ANALOGIQUE-NUMERIQUE SONT PRESENTES ET ETUDIES, TANT AU NIVEAU DE LA METHODOLOGIE DU TEST QUE DES PERFORMANCES DU COMPOSANT ANALYSE
Download or read book Contribution la caract risation de convertisseurs analogique num rique vid o et la conception de circuits de traitement d images written by Laurent Dulau and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse s'intéresse à la caractérisation des convertisseurs analogique-numérique et à la conception de circuits de traitement d'images. Elle s'inscrit dans le cadre du codage de source, domaine d'activité en forte expansion dans le monde des télécommunications. Elle présente à la fois de nouveaux algorithmes pour la mesure du gain et de la phase différentiels sur les convertisseurs analogique-numérique vidéo et traite notamment de l'implantation matérielle par la synthèse VHDL de la Transformée en Cosinus Discret (DCT) que l'on trouve dans les compressions d'images fixes ou animées. La synthèse de circuits pour le multimédia nécessite des environnements de tests non standards qui nous ont conduit à la réalisation de cartes électroniques comme la carte d'acquisition PCI et celle de filtrage d'images.
Download or read book M thodologie de caract risation des circuits de conversion de donn es written by Mohammed Benkais and published by . This book was released on 1993 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: APRES UNE DESCRIPTION DES PRINCIPES MIS EN UVRE DANS LES CONVERTISSEURS ANALOGIQUE-NUMERIQUE ET DES ERREURS RENCONTREES, LA METHODE DE CARACTERISATION DYNAMIQUE PAR ANALYSE SPECTRALE ET CELLE PAR HISTOGRAMME SONT CONSIDEREES EN INSISTANT SUR LES PROBLEMES RENCONTRES LORS DU TEST DES COMPOSANTS A FACTEUR DE MERITE ELEVE. DES SOLUTIONS SONT PROPOSEES ET EN PARTICULIER CELLES CONSISTANT, EN ANALYSE SPECTRALE, A L'UTILISATION D'UN SIGNAL DUAL-TONE ET EN ANALYSE STATISTIQUE, AU TEST EN MODE HISTOGRAMME SATURE. UNE CARACTERISATION DU CAN PAR ANALYSE SPECTRALE EST ALORS POSSIBLE MEME EN PRESENCE D'IMPERFECTIONS DE LA PART DES SIGNAUX DE TEST. LES METHODOLOGIES PROPOSEES SONT INTRODUITES DANS UN SYSTEME DE MESURES ORIGINAL ET DES RESULTATS DE CARACTERISATION SUR DES COMPOSANTS DU COMMERCE PERMETTENT DE VALIDER LES TRAVAUX THEORIQUES.
Download or read book Methodologie de caracterisation des circuits de conversion de donnees application aux convertisseurs analogique numerique a facteur de merite eleve mise en written by Mohammed Benkais and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Systems as Contributors to the NATO Defence Mission written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Mission Systems Panel. Symposium and published by . This book was released on 1997 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultra Wide Band Antennas written by Xavier Begaud and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra Wide Band Technology (UWB) has reached a level of maturity that allows us to offer wireless links with either high or low data rates. These wireless links are frequently associated with a location capability for which ultimate accuracy varies with the inverse of the frequency bandwidth. Using time or frequency domain waveforms, they are currently the subject of international standards facilitating their commercial implementation. Drawing up a complete state of the art, Ultra Wide Band Antennas is aimed at students, engineers and researchers and presents a summary of internationally recognized studies.
Download or read book MIMO written by Alain Sibille and published by Academic Press. This book was released on 2010-12-03 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword from Arogyaswami Paulraj, Professor (Emeritus), Stanford University (USA) The first book to show how MIMO principles can be implemented in today’s mobile broadband networks and components Explains and solves some of the practical difficulties that arise in designing and implementing MIMO systems Both theory and implementation sections are written in the context of the most recent standards: IEEE 802.11n (WiFi); IEEE 802.16 (WIMAX); 4G networks (3GPP/3GPP2, LTE)
Download or read book Monitoring soils in the environment with remote sensing and gis written by Richard Escadafal and published by IRD Orstom. This book was released on 1996 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: ISSS congress remote sensing
Download or read book Laboratory Evaluation of Hand operated Water Pumps for Use in Developing Countries written by Consumers' Association. Testing and Research Laboratory and published by . This book was released on 1982 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guidelines for Conducting and Calibrating Road Roughness Measurements written by Michael W. Sayers and published by . This book was released on 1986 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Road roughness is gaining increasing importance as an indicator of road condition, both in terms of pavement performance, and as a major determinant of road user costs. This paper defines roughness measurement systems hierachically into four groups, ranging from profilometric methods (2 groups), through response type road roughness measuring systems (RTRRMS's), and, subjective evaluation. The International Roughness Index (IRI) is defined, and the programs for it's calculation are provided. The IRI is based on simulation of the roughness response of a car travelling at 80 km/h. The report explains how all roughness measurements can be related to this scale, also when travelling at lower speeds than 80 km/h. The IRI emerges as a scale that can be used both for calibration and for comparative purposes.
Download or read book Pervasive Mobile and Ambient Wireless Communications written by Roberto Verdone and published by Springer Science & Business Media. This book was released on 2012-01-02 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reporting the findings of COST 2100, a major European intergovernmental project, this volume offers system designers a good source of guidelines based on channel characterization and measurement-based modeling, as well as worthwhile ideas for future research.
Download or read book Guide to Nuclear Power Cost Evaluation Equipment costs written by Kaiser Engineers and published by . This book was released on 1962 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Audio Effectiveness in Aviation written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerospace Medical Panel. Symposium and published by . This book was released on 1997 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sheep and Goats in Developing Countries written by Winrock International Livestock Research and Training Center and published by . This book was released on 1983 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this study are to assess the role of small ruminants (sheep and goats) in the food production systems of developing countries, examine their advantages and disadvantages, analyze the constraints limiting their further contribution to the welfare of small farm/low income rural producers, prescribe measures for overcoming these constraints, and make recommendations related to potential donor involvement in support of the development of sheep and goat production. Small ruminants are viewed as an integral, but not dominant component of complex agricultural systems. Particular emphasis is placed on sheep and goats in mixed herds grazing dry rangelands and in small mixed farm systems in medium to high rainfall areas. An analysis of major constraints -- ecological, biological, policy, and socio-economic -- leads to recommendations on the need for a balanced production system approach for research, training and development programs, and for a combination of support activities such as herd health programs, and formulation of favorable credit, marketing and pricing policies for small ruminants and their products.
Download or read book The African Trypanosomiases written by C. W. Lee and published by World Bank Publications. This book was released on 1983 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tsetse-transmitted trypanosomiases are diseases of man and his domestic livestock that have contributed to the prevalence of poverty, malnutrition, and disease in much of tropical Africa. Although the human disease has caused considerable suffering and death, it is the disease of domestic livestock which has, in economic terms, had the most profound effects as a major factor restricting rural African development, particularly by limiting food supply and land use. After a general discussion of the disease and its effects, this report describes the problems and techniques of controlling tsetse-transmitted trypanosomiases in the context of rural development in Africa. It also attempts to show that techniques to achieve an effective degree of trypanosomaiasis control, at least in some ecological conditions, already exist and that there is now an urgent need to put them into practice in conjunction with practical land use programmes.
Download or read book Cambridge Handbook of Engineering Education Research written by Aditya Johri and published by Cambridge University Press. This book was released on 2014-02-10 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cambridge Handbook of Engineering Education Research is the critical reference source for the growing field of engineering education research, featuring the work of world luminaries writing to define and inform this emerging field. The Handbook draws extensively on contemporary research in the learning sciences, examining how technology affects learners and learning environments, and the role of social context in learning. Since a landmark issue of the Journal of Engineering Education (2005), in which senior scholars argued for a stronger theoretical and empirically driven agenda, engineering education has quickly emerged as a research-driven field increasing in both theoretical and empirical work drawing on many social science disciplines, disciplinary engineering knowledge, and computing. The Handbook is based on the research agenda from a series of interdisciplinary colloquia funded by the US National Science Foundation and published in the Journal of Engineering Education in October 2006.
