WorldCat Identities

Parent, D. P.

Overview
Works: 25 works in 70 publications in 2 languages and 1,014 library holdings
Genres: Conference papers and proceedings 
Roles: Author, 956, Thesis advisor
Classifications: QA241, 512.7
Publication Timeline
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Most widely held works by D. P Parent
Exercises in number theory by D. P Parent( Book )

29 editions published between 1978 and 1999 in English and French and held by 688 WorldCat member libraries worldwide

After an eclipse of some 50 years, Number Theory, that is to say the study of the properties of the integers, has regained in France a vitality worthy of its distinguished past. More 'and more researchers have been attracted by problems which, though it is possible to express in simple statements, whose solutions require all their ingenuity and talent. In so doing, their work enriches the whole of mathematics with new and fertile methods. To be in a position to tackle these problems, it is neces sary to be familiar with many specific aspects of number theory. These are very different from those encountered in analysis or geometry. The necessary know-how can only be acquired by study ing and solving numerous problems. Now it is very easy to form ulate problems whose solutions, while sometimes obvious, more often go beyond current methods. Moreover, there is no doubt that, even more than in other disciplines, in mathematics one must have exercises available whose solutions are accessible. This is the objective realised by this work. It is the collab orative work of several successful young number theorists. They have drawn these exercises from their own work, from the work of their associated research groups as well as from published work
Structure theory of set addition by Jean-Marc Deshouillers( Book )

1 edition published in 1999 in English and held by 114 WorldCat member libraries worldwide

Mathématiques & informatique : quatorze problèmes corrigés pour l'enseignement supérieur by François Morain( Book )

4 editions published in 1995 in French and held by 50 WorldCat member libraries worldwide

Récréations arithmétiques by E Fourrey( Book )

5 editions published between 1994 and 2001 in French and held by 47 WorldCat member libraries worldwide

Colloque de théorie analytique des nombres "Jean Coquet" : proceedings journées SMF-CNRS, CIRM : Marseille, Septembre 1985 by Marseille> Colloque de Théorie Analytique des Nombres Jean Coquet. <1985( Book )

3 editions published in 1988 in French and held by 16 WorldCat member libraries worldwide

Ordre maximal d'un élément du groupe des permutations et highly composite numbers by D. P Parent( Book )

5 editions published between 1968 and 1969 in French and held by 14 WorldCat member libraries worldwide

Courbes elliptiques et tests de primalité by François Morain( Book )

1 edition published in 1990 in French and held by 4 WorldCat member libraries worldwide

NOUS DECRIVONS DANS CETTE THESE L'APPLICATION DE LA THEORIE DES COURBES ELLIPTIQUES DEFINIES SUR LES CORPS FINIS A LA CONSTRUCTION D'ALGORITHMES EFFICACES DE PRIMALITE EXACTE. NOUS FAISONS LE LIEN ENTRE LE PROBLEME DE LA REPRESENTATION DES NOMBRES PREMIERS PAR DES FORMES QUADRATIQUES BINAIRES ET LA THEORIE DU CORPS DE CLASSE. A CE PROPOS, NOUS DONNONS UN ALGORITHME RAPIDE DE CONSTRUCTION DU CORPS DE CLASSE D'UN CORPS QUADRATIQUE IMAGINAIRE A L'AIDE DES FONCTIONS DE WEBER. NOUS EN DEDUISONS LE CALCUL DES INVARIANTS DES COURBES ELLIPTIQUES A MULTIPLICATION COMPLEXE DANS UN CORPS FINI EN RESOLVANT PAR RADICAUX L'EQUATION DE DEFINITION DU CORPS DE CLASSE, DANS LE CORPS DES COMPLEXES D'ABORD, MODULO UN NOMBRE PREMIER ENSUITE. NOUS MONTRONS COMMENT GENERALISER LES ALGORITHMES DE PREUVE DE PRIMALITE LES PLUS CLASSIQUES (RECIPROQUES DU THEOREME DE FERMAT) EN UTILISANT LES COURBES ELLIPTIQUES. A L'ENCONTRE DE SON CONCURRENT LE PLUS SERIEUX (SOMMES DE JACOBI), L'ALGORITHME QUI EN RESULTE PRODUIT UN CERTIFICAT DE PRIMALITE. D'UN POINT DE VUE PRATIQUE, NOUS DETAILLONS TOUTES LES PHASES DE L'IMPLANTATION DE L'ALGORITHME, D'ABORD SUR UNE STATION DE TRAVAIL, PUIS SUR PLUSIEURS STATIONS D'UNE MANIERE DISTRIBUEE. A CHAQUE ETAPE, NOUS PRESENTONS LES MEILLEURS ALGORITHMES CONNUS POUR RESOUDRE CHAQUE PROBLEME PARTICULIER (CALCULS SUR LES COURBES ELLIPTIQUES, RECHERCHE DE RACINES DE POLYNOMES MODULO UN NOMBRE PREMIER, ...). NOUS DECRIVONS EGALEMENT L'UTILISATION D'UN MULTIPLICATEUR HARDWARE POUR LE CALCUL DU PRODUIT DE GRANDS ENTIERS, QUI PERMET D'ACCELERER CONSIDERABLEMENT LES CALCULS. ENFIN, NOUS UTILISONS LE PROGRAMME POUR LA RECHERCHE DE NOMBRES PREMIERS DE CENT CHIFFRES (UTILES EN CRYPTOGRAPHIE) ET POUR LA CERTIFICATION DE NOMBRES DE TROIS CENTS A TROIS MILLE CHIFFRES
Neural computation and self-organizing maps : an introduction by Helge Ritter( Book )

2 editions published in 1992 in English and held by 3 WorldCat member libraries worldwide

Quelques propriétés des séries formelles en variables non commutatives by D. P Parent( Book )

1 edition published in 1979 in French and held by 2 WorldCat member libraries worldwide

Rappels sur les séries rationnelles a plusieurs variables non commutatives. Propriétés algébriques des algèbres larges. Propriétés analytiques des séries rationnelles. Quotient de Hadamard de séries rationnelles a plusieurs variables on commutatives. Séries rationnelles Hadamard-inversibles
Diffusional effects in magnetic resonance imaging and microscopy by D. P Parent( )

2 editions published in 1994 in English and held by 2 WorldCat member libraries worldwide

Improvements in the information content of nuclear magnetic resonance (NMR) images have recently been sought through the development of new contrast mechanisms for magnetic resonance imaging (MRI) and NMR microscopy. This thesis addresses the role of molecular diffusion in NMR and develops new methods to obtain image contrast and to infer diffusional action. NMR microscopy of liquid samples provides a means of imaging the spatial distribution of the magnetization arising from nuclei in the liquid, at a resolution of several microns. Usually, the effect of molecular diffusion in NMR microscopy is to degrade resolution and sensitivity due to destructive interference of signals from the moving spins. In this thesis it is demonstrated, both theoretically and experimentally, that diffusional barriers, such as exist in biological tissues, can be made to appear extraordinarily bright in NMR micrographs. These effects are described by the line shape function of the magnetization signal, and by numerical evaluation of the diffusive phase dispersion of the signal. This "edge enhancement" provides a means of visualizing structures as thin and permeable as cell membranes which would otherwise be invisible in NMR microscopy. In the realm of clinical MRI, a description of nuclear spin relaxation mediated by MRI contrast agents and transport processes in compartmentalized systems is given. The relaxation-enhancing action of contrast agents can be most generally explained by exchange and diffusional dephasing, and simple analytic expressions are derived for typical situations. More complex solutions are obtained by efficient numerical methods, including the so-called generalized moment expansion. For appropriate models, it is demonstrated that while the extended influence of contrast agents through diffusion of water can contribute to blurring, such a loss of contrast may be avoided if the multiexponential character of the signal decay is exploited
The Lower Paleolithic of Iran probing new finds from Mar Gwergalan Cave (Holeyland, central Zagros) by D Davoudi( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

CCEMD: Center for Computational Engineering Molecular Dynamics. Theory and user's guide, Version 2.2( Book )

1 edition published in 1995 in English and held by 1 WorldCat member library worldwide

Liposomes in diagnostic imaging : forum( Book )

1 edition published in 1994 in English and held by 1 WorldCat member library worldwide

Extension of classical sequences to negative integers by Benali Benzaghou( )

1 edition published in 2006 in English and held by 1 WorldCat member library worldwide

Études combinatoires des nombres de Jacobi-Stirling et d'Entringer by Yoann Gelineau( )

1 edition published in 2010 in French and held by 1 WorldCat member library worldwide

Cette thèse se divise en 2 grandes parties indépendantes ; la première traitant des nombres de Jacobi-Stirling, la seconde abordant les nombres d'Entringer. La première partie introduit les nombres de Jacobi-Stirling de seconde et de première espèce comme coefficients algébriques dans des relations polynomiales. Nous donnons des interprétations combinatoires de ces nombres, en termes de partitions d'ensembles et de quasi-permutations pour les nombres de seconde espèce, et en termes de permutations pour les nombres de première espèce. Nous étudions également les fonctions génératrices diagonales de ces familles de nombres, ainsi qu'une de leur généralisation sur le modèle des r-nombres de Stirling. La seconde partie introduit les nombres d'Entringer à l'aide de leur interprétation en termes de permutations alternantes. Nous étudions les différentes formules de récurrence vérifiées par ces nombres et généralisons ces résultats à l'aide d'un q-analogue utilisant la statistique d'inversion. Nous verrons également que ces résultats peuvent être étendus à des permutations de forme donnée quelconque. Enfin, nous définissons la notion de famille d'Entringer, et établissons des bijections entre certaines de ces familles. En particulier, nous établissons une bijection reliant les permutations alternantes de premier terme fixé, aux arbres binaires croissants dont l'extrémité du chemin minimal est fixée
Novel Yersinia Pestis Toxin that Resembles Bacillus Anthracis Edema Factor : Study of Activity and Structural Modeling( )

1 edition published in 2003 in English and held by 0 WorldCat member libraries worldwide

The goal of this project was to begin both experimental and computational studies of the novel plague toxin to establish its biological properties and create its 3D-model. The project was divided into two parts. (1) Experimental--This part was devoted to determine distribution of the genes encoding novel plague toxin among different isolates of Y.pestis. If the EF-like activity is important for Y.pestis pathogenicity, it is anticipated that all highly virulent strains will contain the toxin genes. Also, they proposed to initiate research to investigate the functionality of the novel Y.pestis toxin that they hypothesize is likely to significantly contribute to the virulence of this dangerous microbe. this research design consisted of amplification, cloning and expression in E.coli the toxin genes followed by affinity purification of the recombinant protein that can be further used for testing of enzymatic activity. (2) Computational--The structural modeling of the putative EF of Y.pestis was based on multiple sequence alignments, secondary structure predictions, and comparison with 3D models of the EF of B. anthracis. The x-ray structure of the last has been recently published [Nature. 2002. 415(Jan):396-402]. The final model was selected after detailed analysis to determine if the structure is consistent with the biological function
FY05 LDRD Final Report, A Revolution in Biological Imaging( )

1 edition published in 2006 in English and held by 0 WorldCat member libraries worldwide

X-ray free-electron lasers (XFELs) are currently under development and will provide a peak brightness more than 10 orders of magnitude higher than modern synchrotrons. The goal of this project was to perform the fundamental research to evaluate the possibility of harnessing these unique x-ray sources to image single biological particles and molecules at atomic resolution. Using a combination of computational modeling and experimental verification where possible, they showed that it should indeed be possible to record coherent scattering patterns from single molecules with pulses that are shorter than the timescales for the degradation of the structure due to the interaction with those pulses. They used these models to determine the effectiveness of strategies to allow imaging using longer XFEL pulses and to design validation experiments to be carried out at interim ultrafast sources. They also developed and demonstrated methods to recover three-dimensional (3D) images from coherent diffraction patterns, similar to those expected from XFELs. The images of micron-sized test objects are the highest-resolution 3D images of any noncrystalline material ever formed with x-rays. The project resulted in 14 publications in peer-reviewed journals and four records of invention
FY05 LDRD Fianl Report Investigation of AAA+ protein machines that participate in DNA replication, recombination, and in response to DNA damage LDRD Project Tracking Code 04-LW-049( )

1 edition published in 2006 in English and held by 0 WorldCat member libraries worldwide

The AAA+ proteins are remarkable macromolecules that are able to self-assemble into nanoscale machines. These protein machines play critical roles in many cellular processes, including the processes that manage a cell's genetic material, but the mechanism at the molecular level has remained elusive. We applied computational molecular modeling, combined with advanced sequence analysis and available biochemical and genetic data, to structurally characterize eukaryotic AAA+ proteins and the protein machines they form. With these models we have examined intermolecular interactions in three-dimensions (3D), including both interactions between the components of the AAA+ complexes and the interactions of these protein machines with their partners. These computational studies have provided new insights into the molecular structure and the mechanism of action for AAA+ protein machines, thereby facilitating a deeper understanding of processes involved in DNA metabolism
Mutations that Cause Human Disease a Computational/Experimental Approach( )

1 edition published in 2006 in English and held by 0 WorldCat member libraries worldwide

International genome sequencing projects have produced billions of nucleotides (letters) of DNA sequence data, including the complete genome sequences of 74 organisms. These genome sequences have created many new scientific opportunities, including the ability to identify sequence variations among individuals within a species. These genetic differences, which are known as single nucleotide polymorphisms (SNPs), are particularly important in understanding the genetic basis for disease susceptibility. Since the report of the complete human genome sequence, over two million human SNPs have been identified, including a large-scale comparison of an entire chromosome from twenty individuals. Of the protein coding SNPs (cSNPs), approximately half leads to a single amino acid change in the encoded protein (non-synonymous coding SNPs). Most of these changes are functionally silent, while the remainder negatively impact the protein and sometimes cause human disease. To date, over 550 SNPs have been found to cause single locus (monogenic) diseases and many others have been associated with polygenic diseases. SNPs have been linked to specific human diseases, including late-onset Parkinson disease, autism, rheumatoid arthritis and cancer. The ability to predict accurately the effects of these SNPs on protein function would represent a major advance toward understanding these diseases. To date several attempts have been made toward predicting the effects of such mutations. The most successful of these is a computational approach called ''Sorting Intolerant From Tolerant'' (SIFT). This method uses sequence conservation among many similar proteins to predict which residues in a protein are functionally important. However, this method suffers from several limitations. First, a query sequence must have a sufficient number of relatives to infer sequence conservation. Second, this method does not make use of or provide any information on protein structure, which can be used to understand how an amino acid change affects the protein. The experimental methods that provide the most detailed structural information on proteins are X-ray crystallography and NMR spectroscopy. However, these methods are labor intensive and currently cannot be carried out on a genomic scale. Nonetheless, Structural Genomics projects are being pursued by more than a dozen groups and consortia worldwide and as a result the number of experimentally determined structures is rising exponentially. Based on the expectation that protein structures will continue to be determined at an ever-increasing rate, reliable structure prediction schemes will become increasingly valuable, leading to information on protein function and disease for many different proteins. Given known genetic variability and experimentally determined protein structures, can we accurately predict the effects of single amino acid substitutions? An objective assessment of this question would involve comparing predicted and experimentally determined structures, which thus far has not been rigorously performed. The completed research leveraged existing expertise at LLNL in computational and structural biology, as well as significant computing resources, to address this question
 
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Audience level: 0.66 (from 0.60 for Exercises ... to 1.00 for The Lower ...)

Exercises in number theory
Alternative Names

controlled identityBertrandias, Françoise

controlled identityChristol, Gilles

controlled identityDelange, Hubert

controlled identityDeshouillers, Jean-Marc

controlled identityRauzy, Gérard

controlled identityWaldschmidt, Michel, 1946-

Barsky, D.

Barsky, Daniel

Daniel Barsky Frans wiskundige

Daniel Barsky französischer Mathematiker

Daniel Barsky French mathematician

Decomps, Annette

Gerardin, Khyra

Lagrange, Jean

Nicolas, Jean-Louis

Parent, D. P. (Pseud. col·lectiu)

Pathiaux, Martine

Languages
French (33)

English (31)

Covers
Neural computation and self-organizing maps : an introduction