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  1. L'information améliore les conditions de vie dans les Philippines ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Grâce à des données exactes et à jour sur leurs conditions de vie, les Philippins jouissent désormais de nombreux avantages : programmes de formation professionnelle à l'intention des jeunes de Pasay City, dans le grand Manille; nouvelles installations sanitaires et d'adduction d'eau potable à Margosatubig, dans la ...

  2. La Vie de Marillac : un essai hagiographique ? Analyse comparée des sources utilisées par Nicolas Lefèvre de Lezeau dans la Vie de Marillac et la Vie de Morvillier

    Directory of Open Access Journals (Sweden)

    Dora De Lima

    2012-01-01

    Full Text Available Considérer Nicolas Lefèvre de Lezeau comme le biographe de son grand oncle ou comme l’hagiographe de son ami Michel de Marillac revient à glorifier la mémoire des trois héros au détriment du projet d’écriture de l’auteur. La Vie de Jean de Morvillier et la Vie de Michel de Marillac sont vivement marquées par l’omniprésence de leur auteur, quand bien même l’illusion de la richesse documentaire sur les trois héros voudrait l’estomper. Parce qu’ils convoquent une documentation riche et de nombreuses références littéraires, les trois récits de vie retrouvés témoignent d’une quête d’authenticité par leur auteur. En ce sens, la Vie de Marillac se dégage des deux autres récits de vie écrits par Lezeau. Le conseiller d’état n’y cherche effectivement pas seulement à raviver la mémoire de la Ligue dans le milieu dévot, ni même à construire une filiation entre ces deux partis. L’originalité de la Vie de Marillac tient de l’abondance des références spirituelles et de l’autorité que les mystiques incarnent pour sa validation. Pour les mystiques, la vie chargée d’un officier d’état demeure incompatible avec le mode de vie humble et contemplatif d’un « petit ». Du côté des politiques, la « cabale des dévots » représente une menace croissante pour l’autorité du roi. Dès lors, la Vie de Marillac de Lezeau nous invite à réfléchir sur les caractéristiques de rejet d’un modèle de sainteté (E. Suire. La postérité retient Marillac pour sa témérité et sa faillite face à la raison d’état de Richelieu, comme l’attestent le peu de biographies des xixe-xxe siècles de ce garde des sceaux. Parallèlement, si Marillac est décrit comme un laïc ayant fait preuve d’une grande dévotion dans les Histoires de l’ordre des Carmélites déchaussées parues aux xixe et xxe siècles, sa part active à la fondation de l’ordre en France ne suffit pas à faire de lui un saint

  3. Protection de la vie privée dans l'univers numérique des pays en ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    L'augmentation fulgurante du nombre d'internautes et l'amélioration de la capacité informatique permettent aux gouvernements et au secteur privé de recueillir et de partager des renseignements sur toutes les facettes de la vie des particuliers. Dans les pays en développement, où habitent la majeure partie des utilisateurs ...

  4. Un regard oblique : « L’œil du sorcier » dans Une vie de boy de Ferdinand Oyono

    Directory of Open Access Journals (Sweden)

    Pierre Vaucher

    2014-04-01

    Full Text Available Ce texte remet en question la lecture réaliste qui a généralement été faite d’Une vie de boy (1957, premier roman de la trilogie de Ferdinand Oyono. Partant d’une étude du regard, il vise à montrer que celui-ci détermine autant un contenu qu’il met l’accent sur une forme, une esthétique littéraire. En effet, dans le récit, si le regard renvoie à un instrument de pouvoir (celui qui oppose les colons et les colonisés et constitue un enjeu de subversion, il se traduit aussi par une écriture allusive, alliant la distance, l’ironie et l’insolite. Par son caractère indiciel, voire figural, cette « écriture du regard » dont témoigne le journal intime de Toundi en fait une sorte de « récit-forme », où l’espace du texte et le hors-texte (le social se convoquent mutuellement.

  5. Miser, dépenser ou gaspiller ? Étude sur la relation entre l’argent, le jeu et l’addiction dans la vie moderne

    Directory of Open Access Journals (Sweden)

    Johanna Järvinen-Tassopoulos

    2016-04-01

    Full Text Available Le but de cette étude est de comprendre la relation complexe qui peut se nouer entre l’argent, le jeu et l’addiction dans la vie moderne. La conception de l’argent varie selon les significations données, les époques et les lieux. L’argent altère l’essence du jeu en y faisant entrer le défi du risque. Le fait de gagner de l’argent en jouant a souvent partagé les opinions : la séparation du jeu et du travail se base sur des croyances chrétiennes, mais aussi sur l’ambivalence dont le jeu a été doté dans la Modernité. La dépendance à l’habitude de jouer transforme l’usage et la valeur de l’argent chez les joueurs pathologiques. La dépense devient un jeu de gaspillage et la dépendance un outrage à la raison des joueurs. L’addiction est un mot-clé qui représenterait un dérangement dans la vie moderne : de nos jours, la dépendance est devenu un problème multiforme, car son développement n’est plus tributaire de l’usage des substances, mais souvent latent dans les habitudes quotidiennes (cf. les jeux, l’Internet, les achats.

  6. Haute prévalence du Burnout dans les unités Tunisiennes prenant en charge des patients en fin de vie

    Science.gov (United States)

    Amamou, Badii; Bannour, Ahmed Souhaiel; Ben Hadj Yahia, Meriem; Ben Nasr, Selma; Ben Hadj Ali, Bechir

    2014-01-01

    Introduction Chez le personnel soignant, le burnout touche un infirmier sur trois. Ce taux est plus élevé dans les unités prenant en charge des patients en fin de vie. L'objectif de notre travail était d'évaluer la fréquence du burnout chez les infirmiers qui travaillent en soins de fin de vie. Méthodes Il s'agit d'une étude descriptive transversale réalisée entre le 1er Avril et le 31 Mai 2010. 60 infirmiers de six services de Sousse et de Monastir (Tunisie) ont été recrutés. L'évaluation du burnout a été réalisée par deux échelles: MBI (Maslach Burnout Inventory) et BMS (Burnout Measure Short version). Résultats La prévalence du burnout était de 70%; il était élevé chez 81.7%. 80% avaient un niveau élevé d'épuisement émotionnel, 70% avaient un niveau élevé de dépersonnalisation et 17% avaient un niveau bas de sentiment d'accomplissement personnel. Le burnout était plus élevé chez les hommes (70,8% vs 69,4%; p=0,013); ceux qui voulaient améliorer les conditions du travail (70.2% vs. 66.7%; p= 0.017); du salaire (70.2% vs. 66.7%; p= 0.017) et chez les infirmiers suivi en psychiatrie (71.4% vs. 69.8%; p= 0.008). Conclusion Dans notre étude le niveau de burnout était élevé chez les infirmiers prenant en charge des patients en fin de vie. Il était associé au sexe masculin et à l'insatisfaction des conditions de travail et du salaire. D'autres études longitudinales sont nécessaires pour suivre l'évolution de ce syndrome et mettre des stratégies de prévention adéquates. PMID:25584122

  7. La vie rurale en pays kpélé dans le Togo méridional : une ...

    African Journals Online (AJOL)

    Il apparaît au regard de nos travaux que le pays kpélé présente des traits identiques au reste des régions de la grande aire culturelle Adja-Tado, mais dispose aussi, de traits originaux dictés par le cadre de vie et la dynamique sociale interne née depuis les périodes d'occupation du milieu. Enfin, l'étude démontre que ...

  8. Lifetime measurement in Proserpine by reactivity modulation (1960); Mesure du temps de vie dans proserpine par modulation de la reactivite (1960)

    Energy Technology Data Exchange (ETDEWEB)

    Clouet d' Orval, C; Tachon, J; Bertrand, J; Lecoustey, P [Commissariat a l' Energie Atomique, Saclay (France).Centre d' Etudes Nucleaires

    1960-07-01

    The measurement method consists in varying the neutron flux periodically by means of an oscillator with cadmium sectors. From the signal received on a detector the lifetime {tau} can be determined; for various velocities {omega}, we have: (n/{delta}n){sup 2} = ({beta}{sub eff}/{delta}k){sup 2} + ({tau}/{delta}k){sup 2}{omega}{sup 2}. Various corrections are involved, in particular the calculation of the rates of different harmonics in the oscillator signal. (author) [French] La methode de mesure consiste a faire varier periodiquement le flux de neutrons au moyen d'un oscillateur a secteurs de cadmium. Le signal recu sur un detecteur permet la determination du temps de vie {tau}; pour differentes vitesses {omega}, on a: (n/{delta}n){sup 2} = ({beta}{sub eff}/{delta}k){sup 2} + ({tau}/{delta}k){sup 2}{omega}{sup 2}. Differentes corrections interviennent, en particulier, le calcul du taux des differents harmoniques dans le signal de l'oscillateur. (auteur)

  9. Réhabilitation psychosociale et schizophrénie : transfert des apprentissages cognitifs dans la vie quotidienne

    OpenAIRE

    Pivot, Lucile

    2016-01-01

    La schizophrénie est une pathologie psychiatrique chronique d’apparition précoce (entre 15 et 25 ans) et relativement fréquente. Elle se caractérise par un ensemble de symptômes très hétérogènes, qui varient au cours de la maladie et dont le retrait social et les difficultés cognitives sont les plus invalidants (Krebs, 2014).Au cours des dernières décennies, la compréhension de la schizophrénie a beaucoup évolué grâce à l’avancée de connaissances dans le domaine des sciences humaines et biomé...

  10. Radon and its short-lived daughter products in the lower atmosphere; Le radon et ses derives a vie courte dans la basse atmosphere

    Energy Technology Data Exchange (ETDEWEB)

    Servant, J [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1964-07-01

    cm{sup -2}s{sup -1} and the radioactivity of the air can attain 1.5,10{sup -8} Ci m{sup -3} that is five times the permissible dose for populations. (author) [French] Une etude des variations de la radioactivite naturelle de l'air dans la basse atmosphere en fonction des parametres meteorologiques et du relief est presentee. Les radionuclides doses sont le radon et son depot a vie courte. La concentration en radon est dosee de facon continue a l'aide d'un nouvel appareil dont la sensibilite atteint 0,2.10{sup -11} Ci m{sup -3} soit le cinquantieme de la teneur moyenne de l'air au voisinage du sol, cet appareil permet de montrer que l'equilibre radioactif entre le radon et ses descendants a vie courte est realise pendant les periodes ou l'atmosphere est stable. Les observations dans l'air entre 0 et 100 metres au-dessus du sol indiquent que le radon et son depot actif sont de precieux traceurs marquant la stabilite de l'atmosphere. En periode d'inversion de temperature, la nuit en general, le radon s'accumule dans les 30 premiers metres de la couche d'air, puis est chasse avec te lever du soleil et passe au niveau de 100 metres a 9 heures du matin. Le taux de renouvellement de l'air de la basse atmosphere est calcule d'apres le mouvement de cette masse de radon, il est de 90 pour cent un jour d'ete. On montre que ce radon provient du sol ou il diffuse par mouvement brownien variant avec la teneur en eau du sol, en juin 1958, il est de 6.10{sup -17} Ci m{sup -2} s{sup -1} et en janvier 1959 de 0,2.10{sup -17} Ci cm{sup -2} s{sup -1}. Pour l'annee 1958-1959, la moyenne generale du degagement de ce terrain sedimentaire est de 3,8 {+-} l,3.10{sup -17} Ci cm{sup -3} s{sup -1}, elle est identique a la moyenne mondiale calculee par H. Israel. Dans un site vallonne du Morvan, les mouvements de l'air sont bien marques par cette radioactivite; on a observe d'une part des brises ascendantes et descendantes ayant des vitesses d'environ 0,2 et 0,7 m s{sup -1} respectivement et d

  11. Le rôle du récit de vie dans le discours politique de Lula The role of Lula’s Life Story in his Political Speeches

    Directory of Open Access Journals (Sweden)

    Ida Lucia Machado

    2011-10-01

    Full Text Available Cet article propose une réflexion sur le rôle du récit de vie dans les discours politiques, et plus précisément dans les discours d’investiture à la présidence du Brésil de Luis Ignacio Lula da Silva. Il analyse quelques fragments qui mêlent expressément des souvenirs de sa vie passée aux discours politiques d’actualité, mais aussi qui font allusion à sa vie de façon indirecte. Dans le premier discours, Lula se présente comme un personnage de l’histoire, un « il » qui veut travailler pour la collectivité ; néanmoins, les allusions à sa trajectoire de vie le légitiment comme celui qui peut promouvoir le changement requis par le peuple. Dans le second discours, Lula utilise depuis le début un « je » ancré dans sa propre histoire : sa « petite » histoire personnelle semble ainsi s’incorporer à la « grande » histoire d’une nation. En ce sens, le récit de vie comprend une dimension argumentative qui permet de construire un ethos présidentiel par le jeu qu’il instaure entre l’individuel et le collectif, créant ainsi un effet de pathos qui appelle à l’identification. On s’interroge dans ce cadre sur la question du populisme dans son rapport aux stratégies de captation propres au discours politique.This paper analyzes fragments of President Luiz Inácio Lula da Silva’s inaugural speeches. Lula da Silva served as the President of Brazil for two consecutive terms in office. In his first inaugural speech, Lula da Silva refers to himself as a historical character, and uses the pronoun “he” (or “not-I”, a “he” at the service of the community. However, his path in life, mentioned in a single paragraph, legitimizes him as someone who is able to bring forward the changes demanded by the people. From the beginning of his second inaugural speech, Lula da Silva uses the pronoun “I”, which points to his own story: therefore, his “small, personal story” seems to be embedded into the

  12. Acumulação primitiva:  um processo atuante na sociedade contemporânea Accumulation Primitive: un processus actif dans la societé contemporaine Primitive accumulation: a process active in contemporary society

    Directory of Open Access Journals (Sweden)

    Sandra Lencioni

    2012-03-01

    acumulação primitiva e reprodução do capital na sociedade contemporânea.Dans le contexte d'hégémonie de la reproduction sociale capitaliste, l'accumulation primitive est interprétée soit comme un processus du passé, soit comme un processus qui se fait présent jusqu’aujourd’hui. Notre point de vue est que l'accumulacion primitive historique n'a pas disparu. Au contraire, elle est encore une importante composante de la société contemporaine. En ce cas, les deux processus capitalistes, d'accumulation primitive et de reproduction du capital, coexistent et s’accomplissent de façon contradictoire et dialectique. Le premier processus est attaché à la spoliation et à la production d'un capital nouveau, alors que le second est attaché à l'exploration d’un capital déjà constitué qui, en même temps, fait partie de celui là. La différence entre les deux termes, spoliation et exploration, est examinée dans la première partie du texte, et en considérant la position de Harvey à propos de cette controverse. Dans la deuxième partie on discute l'accumulation primitive qui se manifeste aujourd’hui, comme la fraude, le vol et la violence, tels qu’ils se présentaient lors de la genèse du capitalisme. Bien que le monde ait changé, à cause du progrès technique, et malgré l’existence de lois de protection des droits de l'homme, il y a encore des actions semblables à celles de cette époque là. Ces actions se manifestent vraiment comme expédientes de la production du capital à la façon primitive, à savoir: le vol de terres; la rapine des ressources naturelles y inclus la biopiraterie; l'esclavage pour dette, une forme violente de spoliation où le travailleur libre, par les mécanismes de domination auxquels il est soumis, perd sa liberté. Par conséquent, on propose la thèse suivante : toutes les formes de spoliation sont productrices d'argent et de capital en potentiel et le capital financier, à son tour,  construit particuli

  13. Identifier et s’identifier dans les milieux lettrés bagdadiens(ve-vie/xie xiie siècles)

    OpenAIRE

    Vanessa Van Renterghem

    2013-01-01

    À partir de l’exemple de Bagdad aux ve-vie/xie-xiie siècles, l’article s’intéresse à des situations informelles d’identification : la rencontre entre inconnus, engendrant la nécessité d’une identification sociale ayant pour but de mesurer l’opportunité d’entrer ou non en interaction avec la personne rencontrée. L’étude considère tout d’abord ces situations, les acteurs mis en présence et les enjeux sociaux du travail alors entrepris : processus réciproque, distinct par ses formes et ses objec...

  14. La vie privée en droit camerounais

    OpenAIRE

    Kameni, Guy Marcel

    2013-01-01

    La vie privée, notion sibylline et contingente, n’a pas de définition légale en droit Camerounais comme dans d’autres législations occidentales à l’exemple de la France. Cette légèreté du législateur pose de sérieux problèmes qui font de la vie privée, un objet juridique indéterminé justifiant la nécessité de la détermination de sa valeur juridique. La vie privée est un objet juridique indéterminé dans la mesure où tout effort de définition est délicat et plusieurs notions semblent y faire pa...

  15. Identifier et s’identifier dans les milieux lettrés bagdadiens(ve-vie/xie xiie siècles

    Directory of Open Access Journals (Sweden)

    Vanessa Van Renterghem

    2013-06-01

    Full Text Available À partir de l’exemple de Bagdad aux ve-vie/xie-xiie siècles, l’article s’intéresse à des situations informelles d’identification : la rencontre entre inconnus, engendrant la nécessité d’une identification sociale ayant pour but de mesurer l’opportunité d’entrer ou non en interaction avec la personne rencontrée. L’étude considère tout d’abord ces situations, les acteurs mis en présence et les enjeux sociaux du travail alors entrepris : processus réciproque, distinct par ses formes et ses objectifs de l’identification d’individus par des institutions. Puis sont analysés les outils utilisés pour effectuer le travail d’identification, à partir d’indices relevant de la présentation de soi et perçus par les contemporains comme renseignant de façon immédiate sur l’identité sociale de leurs interlocuteurs : le nom, au rôle ambigu car susceptible de manipulations, le niveau de langue, et surtout l’apparence extérieure (vêtement et coiffure.

  16. Regards critiques des jeunes Marocains sur leur place dans la vie politique nationale et les mobilités vers l’Europe

    Directory of Open Access Journals (Sweden)

    Zoubir Chattou

    2015-06-01

    Full Text Available L’objet de cet article est d’expliciter les aspirations politiques des jeunes au Maroc et leurs perceptions des mobilités transnationales. Rappelons que la thématique de la jeunesse a suscité un intérêt particulier ces dernières années au sein de ce Maroc en mouvement. En effet, le Pays connaît des changements profonds au niveau politique, économique, démographique et socioculturel qui ont incontestablement affecté les perceptions des jeunes selon la diversité de leurs profils. Ces changements touchent également les structures de pouvoir, les organisations de la société civile, les droits humains et l’évolution des rapports Nord/Sud. Il s’agit donc dans ce travail de saisir le regard critique des jeunes interviewés de l’ordre national et de ses articulations avec le niveau mondial. Ceci rend plus visible leur revendication d’une citoyenneté effective à la fois à l’échelle nationale et mondiale. Plusieurs focus groupes de jeunes (65 jeunes lycéens et du supérieur d’origines rurale et citadine ont été organisés dans le cadre de cette étude.

  17. Sociabilité, solidarité : culture, identité et vie urbaine dans les quartiers noirs du cap (Afrique du Sud

    Directory of Open Access Journals (Sweden)

    Myriam Houssay-Holzschuch

    1999-05-01

    Full Text Available La présence des Noirs dans les villes sud-africaines a longtemps été sévèrement limitée et contrôlée par les régimes de ségrégation et d´apartheid. Les espaces qui leur étaient assignés avaient été conçus dans ce but. Pourtant, ils abritent aujourd´hui des formes sociales nouvelles comme une culture urbaine originale et dynamique. Cet article montre comment les structures familiales, l´agencement intérieur des habitations ou le réseau associatif ont transformé ces espaces. Enfin, l´analyse de cartes mentales dessinées par les résidents confirme que l´espace des quartiers noirs existe avant tout comme projection des relations et des réseaux sociaux.

  18. La vie dans l'Univers

    CERN Multimedia

    CERN Press Office. Geneva

    2001-01-01

    The Universe is indescribably huge. Can it be possible that humanity is the only form of intelligent life that exists in all this immensity? Are we really alone ? Throughout history there have been reported sightings of creatures from elsewhere. Science fiction novels and films with flying saucers and bizarre looking aliens are part of our general culture. Perhaps the Earth is really only an experiment designed by mice and soon we will all be destroyed to make way for a new interstellar highway!

  19. La tradition cosmique extraits du livre de la vie de Kelaouchi

    CERN Document Server

    Théon, Max; Ligaran

    2015-01-01

    Extrait : ""Dans une vision de la nuit, une voix me parla, disant : ""La matière n'est-elle pas suprême ?"" Ne sachant d'où venait cette vois, je ne répondis point. Comme je gardais le silence, une voix dit : La vie n'est-elle point suprême ?"" Une troisième voix, que je connaissais, dit alors : ""La matière et la vie sont inséparables dans tout le Cosmos de l'être, puisque tout ce qui est vit.""

  20. On Synchronization Primitive Systems.

    Science.gov (United States)

    The report studies the question: what synchronization primitive should be used to handle inter-process communication. A formal model is presented...between these synchronization primitives. Although only four synchronization primitives are compared, the general methods can be used to compare other... synchronization primitives. Moreover, in the definitions of these synchronization primitives, conditional branches are explicitly allowed. In addition

  1. Abelian primitive words

    OpenAIRE

    Domaratzki, Michael; Rampersad, Narad

    2011-01-01

    We investigate Abelian primitive words, which are words that are not Abelian powers. We show that unlike classical primitive words, the set of Abelian primitive words is not context-free. We can determine whether a word is Abelian primitive in linear time. Also different from classical primitive words, we find that a word may have more than one Abelian root. We also consider enumeration problems and the relation to the theory of codes. Peer reviewed

  2. De la vie pelagique temporaire a la vie pelagique permanente

    NARCIS (Netherlands)

    Face, Louis

    1949-01-01

    Depuis longtemps certain aspect larvaire de nombreuses formes pélagiques faisant partie du plancton permanent a retenu l’attention des naturalistes et a conduit quelques-uns d’entre eux à considérer cette faune comme primitive. Si cette conclusion s’est par la suite avérée inexacte et si l’origine

  3. From First Life to Second Life: Evaluating task-based language learning in a new environment / De la vie réelle à la vie virtuelle: évaluation de l'apprentissage des langues basé sur les tâches dans un nouvel environnement

    Directory of Open Access Journals (Sweden)

    Min Jung Jee

    2014-05-01

    Full Text Available Second Life is an avatar-based 3D virtual world that has recently received attention from educators and researchers in various fields to explore its pedagogical benefits. Considering the increasing implementation of technologies broadly in much instruction, this study investigated how different task types affect ESL students’ use of Second Life environment, and factors that determine success or failure of a task completion. Enrolled in a university ESL program, 34 high- and low-intermediate students participated, and they were asked to use the voice-chat function and communication features of avatars as they participated in three task types: Jigsaw, Decision-making, and Discussion tasks, representing the continuum of communicative tasks by Pica, Kanagy, and Falodun (1993. Emerging phenomena from the data described how the different levels’ of ESL students used Second Life environment in different task types, focusing on avatar use, telepresence, and affordances, and critical factors that led success or failure of task completion. « Second Life » est un univers virtuel en 3D basé sur des avatars qui a récemment retenu l'attention des éducateurs et des chercheurs de divers domaines, désireux d’explorer les avantages pédagogiques de ce jeu. Étant donné l’application croissante des technologies en éducation, cette étude a examiné la manière dont différents types de tâches affectent l’utilisation de l’environnement « Second Life » chez les étudiants d’anglais langue seconde (ALS, et les facteurs déterminant le succès ou l'échec dans l’exécution d’une tâche. 34 étudiants universitaires inscrits dans des programmes intermédiaires d’ALS de niveaux différents ont été invités à utiliser les fonctions de conversation orale (chat vocal et de communication des avatars alors qu’ils participaient à trois types de tâches: casse-tête, prise de décision, et tâches de discussion, correspondant à l

  4. Participation des jeunes femmes à la vie politique au Malawi | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Conscients de la corrélation entre la pauvreté, la vulnérabilité sociale et les inégalités entre les sexes, les chercheurs se demanderont dans quelle mesure la situation sociale, économique, culturelle et politique des femmes qui vivent en milieu rural au Malawi influe sur la participation, à la vie politique locale, des jeunes ...

  5. Mesurer le droit de participer à la vie culturelle: le développement des indicateurs

    NARCIS (Netherlands)

    Donders, Y.; Bouchard, J.; Gandolfi, S.; Meyer-Bisch, P.

    2013-01-01

    Dans les domaines des droits de l'homme, de la culture et du développement, des cadres et mécanismes sont développés afin de mesurer et de qualifier les relations entre ces domaines et leur impact sur la vie des individus en des communautés. Les indicateurs constituent un élément important de ces

  6. Accéder à la maison individuelle en zone périurbaine : passé résidentiel, position dans le cycle de vie et sphères d’identification

    Directory of Open Access Journals (Sweden)

    Josette Debroux

    2012-05-01

    Full Text Available Les zones périurbaines sont un lieu d’installation privilégié des « jeunes ménages avec enfants » en provenance des pôles urbains qui, tout en continuant de travailler en ville, souhaitent accéder à la propriété d’une maison individuelle. En tenant compte de la socialisation résidentielle, structurée par des normes, des représentations qui dessinent le champ des possibles en matière résidentielle dans un contexte socio-historique donné, des positions occupées dans les trajectoires conjugale, familiale et professionnelle au moment de l’installation, l’objectif de cet article est de montrer l’enjeu, en termes d’identité sociale espérée, du choix résidentiel périurbain qui intervient dans des configurations familiales variées où les conjoints sont investis de manière différenciée dans les différentes sphères d’activités. Les attentes en termes d’identité résidentielle qui dépendent des identités attendues et reçues dans les autres sphères varient selon la position sociale, selon la pente de la trajectoire professionnelle, selon le genre. Quand les identités professionnelles ne coïncident pas avec les identités espérées, que les chances de parvenir à un ajustement sont faibles, l’investissement dans la sphère résidentielle est important.Suburban areas are privileged by the "young couples with children" from the urban poles which, while continuing to work in town, wish to be first-time buyer of a detached house. By taking into account of the residential socialization, structured by norms, representations which show the field of the possibilities in residential sphere in a given socio-historic context, positions had in the conjugal, family and professional trajectories when they arrive, the aim of this paper is to show the stake, in terms of expected social identity, the suburban residential choice which come up in varied family configurations where the husband and wife invest

  7. Sécurité et protection de la vie privée dans les systèmes RFID, appliquées aux réseaux EPCglobal

    OpenAIRE

    Tounsi , Wiem

    2014-01-01

    La technologie Radio Frequency IDentification (RFID) est un moyen d'automatiser l'identification et le stockage des informations dans des étiquettes RFID. Ces étiquettes peuvent être fixées ou intégrées à un objet à identifier et sont lues par un lecteur RFID. Electronic Product Code (EPC) Classe 1 Génération 2 (appelé Gen2) est un exemple typique des étiquettes RFID passives. Il représente l'élément clé d'une architecture RFID, nommée EPCglobal network. Ces étiquettes peuvent contenir plus d...

  8. Les demandes d'enfermement dans la généralité de Rouen au xviiie siècle : le récit de vie comme objet d'Histoire

    Directory of Open Access Journals (Sweden)

    Élise Chopin-Tufel

    2009-10-01

    Full Text Available Á travers quelques exemples normands de la seconde moitié du xviiie siècle, cet article analyse la construction des dossiers de demandes d’enfermement et les raisons qui poussent les familles à demander des ordres du roi pour enfermer l’un des leurs. Ces documents présentent des particularités (manque de spontanéité, fragmentation des récits narratifs qui doivent être prises en compte dans leur étude. Ils sont cependant d’une grande richesse pour aborder les réseaux sociaux, les normes et transgressions dans la société normande prérévolutionnaire. Le concept d’identité narrative développé par Paul Ricœur enrichit l’étude de ces sources. Á travers la narration, les justiciables normands mobilisent en effet différentes identités qui renseignent sur les rapports qu’ils entretiennent avec le politique.Through Norman examples from the second half of the 18th century, this article analyses the structure of confinement requests cases and the reasons why families used lettres de cachet to lock up one of their folks. Those documents show particularities (a lack of spontaneity, a fragmentation in the narrative that must be considered when studying them. However they are very useful to study social networks as well as the standards and contraventions of this prerevolutionary Norman society. This concept of a 'narrative identity' as developped by Paul Ricœur enriches the study of these sources. Through narration, Normans who are to be tried use different identities, which give information about their relations with politics.

  9. The Flemish Primitives

    NARCIS (Netherlands)

    Vos, De Dirk

    2003-01-01

    Intensely realistic, piercingly beautiful, the art of the Flemish Primitives inspires powerful emotional responses. Painted during the fifteenth century in the southern Netherlands, these influential and enduring works helped establish the foundations of modern European painting.Sumptuously

  10. Experimental Assessment of Battery Cycle Life Within the SIMSTOCK Research Program Évaluation expérimentale de la durée de vie de la batterie dans le programme de recherche SIMSTOCK

    Directory of Open Access Journals (Sweden)

    Gyan P.

    2013-05-01

    Full Text Available The steadiness over time, of on-board Energy Storage Systems (ESS performances is a major issue fora successful and massive diffusion of electrified, hybrid and electric vehicles. Capacity fade and internal resistance increase due to ageing will directly affect vehicle range and performances. Therefore, ESS ageing forecasting remains an important area of investigations. Reaching this goal involves fundamental research on materials, experimentation, simulation and design by the end users. This paper describes the main results of a 3.5-year, 4.2 M€ collaborative research program on battery ageing, SIMSTOCK, which was finished in fall 2011. This program has involved 15 partners among which, research labs, ESS manufacturers, automotive components suppliers and vehicle manufacturers, with the support of the French agency ADEME. This paper will then focus mainly on modeling and simulation of a lithium-ion high power cell tested within the program. First, it describes the development of a numerical equivalent electrical circuit model of battery, associated with a calibration tool and its experimental validation. Secondly, it describes the construction of a Design of Experiments (DOE, its use and validation, for defining mathematical expressions, representing the battery model parameters evolutions, as a function of battery ageing. Thirdly, the paper details a mathematical method created with the aim to take into account the cycling and the calendar effects on battery characteristics during the experiment on tests benches. Finally, the battery model is integrated in a full hybrid vehicle model, on Imagine Lab AMESim simulation platform, to determine, with realistic driving conditions, the impact of battery ageing on the vehicle performance and fuel consumption. La stabilité dans le temps des performances des systèmes embarqués de stockage d’énergie (Energy Storage Systems, ESS est un enjeu majeur pour une diffusion massive et le succès des v

  11. Le désert des héros : récits de vies solitaires dans les séries américaines de fiction

    Directory of Open Access Journals (Sweden)

    Joseph Belletante

    2010-04-01

    Full Text Available Les séries télévisées américaines ont placé ces dernières années l’aventure (au sens d’évasion entre parenthèses pour  produire à grande échelle une nouvelle catégorie de héros, des personnages qui pensent et agissent en doubles de l’individu moderne, dans un « temps présent », sans fin, empoisonnés par un « mal » qui les empêche de se projeter en avant. Nous nous proposons de dresser ici, dans une perspective post-critique, rendant aux spectateurs une autonomie symbolique véritable, un portrait des « états d’âme » humains, des solitudes singulières ou de groupe mis en scène par quatre séries terminées sur le plan de la production afin d’en posséder une lecture globale (Friends, The Sopranos, The West Wing et Ally McBeal, et répondant aux principaux genres de fiction diffusés par les chaînes américaines (comédie, drame et dramédie.For the last twenty years, American television series have left aside the topic of adventure in the sense of evasion in order to produce a new kind of hero. The modern day hero is the mirror image of the modern individual who acts and thinks in an endless present tense, poisoned by an “evil” that keeps him from moving forward. In a post-critic perspective, this article offers a portrait of human “states of mind” that will restitute the spectator his symbolic autonomy, through singular solitudes or the loneliness of a group as is shown by four television series that are no longer in production (Friends, The Sopranos, The West Wing and Ally McBeal in order to allow a global interpretation and that correspond to the main genres of fiction broadcasted by the American network (comedy, drama, and dramedy.

  12. La médecine prédictive en oncologie, une discipline en construction : quels changements dans les questions éthiques, quel regard sur la vie des individus concernés

    Directory of Open Access Journals (Sweden)

    de Montgolfier Sandrine

    2015-01-01

    Full Text Available La médecine prédictive a pour but d’identifier des êtres humains à risque de développer une maladie liée à une anomalie génétique mais également de connaître les risques chez de futurs parents de transmission d’un caractère à leur descendance. Dans le contexte de la cancérologie, nous nous intéresserons particulièrement à la question de la validité clinique de ces données, de l’interface entre clinique et recherche que les nouvelles technologies de séquençage amènent. Nous développerons les questionnements éthiques posés par ces nouvelles technologies et leurs changements au cours du temps. Chaque résultat de tests mobilise chez les personnes à risque une réflexion profonde sur son statut, sa liberté de savoir ou de ne pas savoir, sur la tension qu’elle développe entre conscience, liberté et destin. Se pose également la question de la responsabilité vis-à-vis des membres de la famille et également sur les conséquences d’un éventuel nouvel eugénisme libéral qui se développe au côté du développement de la génétique ? Ces nouvelles pratiques s’accompagnent d’une injonction à l’autonomie et un appel au choix des personnes tout en créant une forme de contrainte sur la personne et sa famille individuelle dans une société où la bonne santé est mise en exergue comme valeur primordiale. Nous pourrons ainsi amener un début de réflexion sur la manière de former les populations à la question du risque génétique de l’école à l’âge adulte.

  13. « Vie » et « vivant » : perspectives épistémologiques

    Directory of Open Access Journals (Sweden)

    dell’Angelo-Sauvage Michèle

    2015-01-01

    Full Text Available Des idées des philosophes de la Grèce ancienne, à celles que suggèrent les avancées contemporaines de la biologie, différentes conceptions de la vie et du vivant sont proposées sans qu’un consensus ne soit obtenu. Différents auteurs ont présenté la vie comme l’affaire des philosophes, sous ses aspects politiques et sociaux, tandis que le vivant était l’affaire des biologistes préoccupés du fonctionnement des organismes (Canguilhem, 1990; Fassin, 2000; Jacob, 1970; Pichot, 2011. Mais cette distinction est actuellement rediscutée (Cherlonneix, 2013; Morange, 2013. D’autres auteurs mettent en contraste les approches réductionnistes et holistes et présentent les conséquences de ces points de vue. Dès 2006, Guespin-Michel et Stewart envisageaient un changement de paradigme inévitable face aux modifications de méthodes dans différents groupes de recherche. Nous proposons de porter un regard croisé sur les concepts de vie et de vivant dans le but d’éclaircir les fondements épistémologiques sous-jacents à un enseignement relatif au vivant : observe-t-on une influence réciproque des conceptions de « vie » et de « vivant » dans les différents courants de pensée ? Les changements épistémologiques liés aux observations faites à différentes échelles biologiques modifient-ils les réflexions philosophiques, scientifiques et sociétales ? Qu’en est-il actuellement de la distinction vie/vivant ?

  14. Évaluation de l'efficacité des interventions organisationnelles mises en oeuvre dans le cadre de la norme "Entreprises en santé" : Impacts sur la conciliation travail-vie personnelle et l'état de santé globale des travailleurs du Québec

    OpenAIRE

    Lambert-Slythe, Anne-Frédérique

    2017-01-01

    La conciliation travail-vie personnelle (CTVP) réfère à un effort d’harmonisation entre les exigences du milieu professionnel et celles issues des rôles familiaux et personnels. Au Québec, de 40 à 47% des travailleurs déclarent vivre un conflit travail-vie personnelle. De plus en plus d’entreprises implantent des mesures favorisant la CTVP, mais leurs effets sur la santé des travailleurs sont peu connus. La norme Entreprise en Santé (NEES) a été implantée en 2008. Les interventions prévues pa...

  15. Les estimations du capital humain au Canada : approche fondee sur le revenu de la vie entiere

    OpenAIRE

    Gu, Wulong; Wong, Ambrose

    2010-01-01

    Dans le present document, nous produisons une estimation de l'investissement en capital humain fonde sur le marche et du stock de ce capital au Canada au cours de la periode s'etendant de 1970 a 2007 selon l'approche fondee sur le revenu de la vie entiere. Nous comparons cette estimation a celle de l'investissement en capital physique et naturel et du stock de ce capital. En suivant la methode elaboree par Jorgenson et Fraumeni, nous estimons le stock de capital humain sous forme du revenu de...

  16. Ins-Robust Primitive Words

    OpenAIRE

    Srivastava, Amit Kumar; Kapoor, Kalpesh

    2017-01-01

    Let Q be the set of primitive words over a finite alphabet with at least two symbols. We characterize a class of primitive words, Q_I, referred to as ins-robust primitive words, which remain primitive on insertion of any letter from the alphabet and present some properties that characterizes words in the set Q_I. It is shown that the language Q_I is dense. We prove that the language of primitive words that are not ins-robust is not context-free. We also present a linear time algorithm to reco...

  17. L'Avenir de la Vie sur la Terre

    CERN Document Server

    CERN. Geneva

    2007-01-01

    Notre planète va mal : réchauffement climatique, épuisement des ressources naturelles, pollutions des sols et de l'eau provoquées par les industries civiles et guerrières, disparité des richesses, malnutrition des hommes, taux d'extinction effarant des espèces vivantes, etc. La situation est-elle vraiment dramatique ? Que penser des thèses qui contestent ce pessimisme ? À partir des données scientifiques les plus crédibles - et de leurs incertitudes -, Hubert Reeves dresse un bilan précis des menaces qui pèsent sur la planète. Son diagnostic est alarmant : si la vie sur Terre est robuste, c'est l'avenir de l'espèce humaine qui est en cause. Le sort de l'aventure humaine, entamée il y a des millions d'années, va-t-il se jouer en l'espace de quelques décennies ? Notre avenir est entre nos mains. Il faut réagir, et vite, avant qu'il ne soit trop tard. Auteur de nombreux ouvrages sur l'odyssée cosmique tel Patience dans l'azur ou Poussières d'étoiles, Hubert Reeves est astrophysicien et dire...

  18. Stahl et les âges de la vie

    Directory of Open Access Journals (Sweden)

    Sarah Carvallo

    2011-07-01

    Full Text Available La vieillesse constitue une pierre de touche pour toute théorie médicale : elle oblige à rendre raison de la temporalité à l’œuvre dans la vie. Aux yeux de Stahl, les iatromécaniciens méconnaissent la dimension temporelle de l’organisme ; en particulier, ils en ignorent la périodicité. Comprendre la vieillesse suppose donc la critique de la représentation linéaire du temps organique, que développe la mécanique et qui réduit le vivant au seul composé physique et chimique. Il reste alors à trouver la cause de la périodicité organique : sur ce point, Georg Ernst Stahl critique Thomas Sydenham, qui reconnaît certes la périodicité du vivant mais nie la possibilité d’une médecine étiologique. Pour sa part, le médecin de Halle cherche à rendre compte du vieillissement en lien avec les actions organiques fondamentales : le tonus, la circulation, l’excrétion, la sécrétion.

  19. Une vie traversée : Unica Zürn

    Directory of Open Access Journals (Sweden)

    Jeannine Paque

    2017-11-01

    Full Text Available Born in 1916 in Berlin, Unica Zürn committed suicide in Paris in 1970. During the last twenty years of her life, this artist, painter, and sentimental companion of Hans Bellmer, fought against schizophrenia. She spent many periods in psychiatric hospitals and has described her mental illness, her remissions from this illness and the psychiatric universe in El Hombre-Jazmín. This is an unusual autobiography, narrated in third person and in the present historic, and represents a direct and perturbed testimony of a lucid nature about her experiences. The book includes anagrams that sh developed over a long period of time. Née en 1916 à Berlin, Unica Zürn se suicide à Paris en 1970. Durant les quelque vingt dernières années de sa vie, cette artiste, peintre et écrivain, compagne de Hans Bellmer, luttera contre la schizophrénie. Elle fera de nombreux séjours en hôpital psychiatrique et décrira tant sa maladie mentale et ses rémissions que l’univers psychiatrique dans un texte majeur, L’Homme-Jasmin. Une étrange autobiographie à la troisième personne et au présent, troublant témoignage direct et lucide sur un vécu perturbé, qui inclut les textes anagrammatiques auxquels elle s’est longuement adonnée.

  20. Technologies agricoles modernes et changements dans la vie socio ...

    African Journals Online (AJOL)

    Ainsi les anciennes habitudes en matière d'organisation économique, sociale et culturelle sont-elles loin d'avoir été préservées. La présente étude vise à analyser l'ensemble des changements induits par les nouvelles technologies agricoles sur les structures économique, culturelle, politique, religieuse et sociale de ladite ...

  1. The effective lifetime and temperature coefficient in a coupled fast-thermal reactor; Temps de vie effectif et coefficient de temperature dans un reacteur a couplage neutrons rapides-neutrons thermiques; Ehffektivnyj srok zhizni i temperaturnyj koehffitsient nejtronov v dvoyakom reaktore na bystrykh i teplovykh nejtronakh; Vida efectiva y coeficiente de temperatura en un reactor con acoplamiento rapido-termico

    Energy Technology Data Exchange (ETDEWEB)

    Haefele, W. [Kernforschungszentrum, Karlsruhe (Germany)

    1962-03-15

    The theory of coupled systems was extensively developed by Avery and co-workers at the Argonne National Laboratory. One of the main points of interest in a coupled system is the larger effective lifetime of neutrons. The effect of the thermal component acts as a sort of neutron-delayer. As in the theory of delayed neutrons the delaying effect disappears if the reactivity worth is high enough to make the fast component critical by itself. In the study a coupled reactor is considered where the fast component suffers a sudden reactivity step {alpha}{sub 0}. Because of the increasing power-level the temperature rises and two temperature coefficients start to work: the temperature coefficient of the fast component and the temperature coefficient of the thermal component. The problem is considered with one group of delayed neutrons (in the ordinary meaning). A formalism is given to express the effective lifetime and temperature coefficient during the different stages of the excursion. Excursions for different {alpha}{sub 0} are given so that the limit of fast-reactor kinetics is reached. (author) [French] La theorie des systemes a couplage a ete mise au point par Avery et ses collaborateurs au Laboratoire national d'Argonne. L'une des caracteristique les plus interessantes d'un systeme a couplage est que le temps de vie effectif des neutrons est plus long. L'effet de la partie thermique contribue en quelque sorte a retarder les neutrons. Comme dans la theorie des neutrons retardes, l'effet de retardement disparait lorsque la reactivite a une valeur suffisamment elevee pour rendre la partie rapide critique par elle-meme. L'auteur du memoire considere un reacteur a couplage dont la partie rapide subit un saut instantane de reactivite, {alpha}{sub 0}. La temperature s'eleve a cause de l'augmentation de puissance et deux coefficients de temperature commencent a s'appliquer: le coefficient de temperature de la partie rapide et le coefficient de temperature de la partie

  2. Optimal primitive reference frames

    International Nuclear Information System (INIS)

    Jennings, David

    2011-01-01

    We consider the smallest possible directional reference frames allowed and determine the best one can ever do in preserving quantum information in various scenarios. We find that for the preservation of a single spin state, two orthogonal spins are optimal primitive reference frames; and in a product state, they do approximately 22% as well as an infinite-sized classical frame. By adding a small amount of entanglement to the reference frame, this can be raised to 2(2/3) 5 =26%. Under the different criterion of entanglement preservation, a very similar optimal reference frame is found; however, this time it is for spins aligned at an optimal angle of 87 deg. In this case 24% of the negativity is preserved. The classical limit is considered numerically, and indicates under the criterion of entanglement preservation, that 90 deg. is selected out nonmonotonically, with a peak optimal angle of 96.5 deg. for L=3 spins.

  3. Kohvik-restoran C'est La Vie = Cafe-restaurant C'est La Vie

    Index Scriptorium Estoniae

    2008-01-01

    Kohvik-restorani C'est La Vie (Suur-Karja 5, Tallinn) sisekujundusest. Sisearhitekt: Maile Grünberg, kes kavandas ka valdavalt mööbli. Laevalgusti disainis Tõnis Vellama. Skulptuuride (koopiad) autor on keraamik Ülle Rajasalu. Maile Grünbergist, tema viimased tööd. Keldrikorruse ja I korruse plaan, 8 värv. vaadet, foto M. Grünbergist

  4. Unsupervised Learning of Action Primitives

    DEFF Research Database (Denmark)

    Baby, Sanmohan; Krüger, Volker; Kragic, Danica

    2010-01-01

    and scale, the use of the object can provide a strong invariant for the detection of motion primitives. In this paper we propose an unsupervised learning approach for action primitives that makes use of the human movements as well as the object state changes. We group actions according to the changes......Action representation is a key issue in imitation learning for humanoids. With the recent finding of mirror neurons there has been a growing interest in expressing actions as a combination meaningful subparts called primitives. Primitives could be thought of as an alphabet for the human actions....... In this paper we observe that human actions and objects can be seen as being intertwined: we can interpret actions from the way the body parts are moving, but as well from how their effect on the involved object. While human movements can look vastly different even under minor changes in location, orientation...

  5. Motion Primitives for Action Recognition

    DEFF Research Database (Denmark)

    Fihl, Preben; Holte, Michael Boelstoft; Moeslund, Thomas B.

    2007-01-01

    the actions as a sequence of temporal isolated instances, denoted primitives. These primitives are each defined by four features extracted from motion images. The primitives are recognized in each frame based on a trained classifier resulting in a sequence of primitives. From this sequence we recognize......The number of potential applications has made automatic recognition of human actions a very active research area. Different approaches have been followed based on trajectories through some state space. In this paper we also model an action as a trajectory through a state space, but we represent...... different temporal actions using a probabilistic Edit Distance method. The method is tested on different actions with and without noise and the results show recognition rates of 88.7% and 85.5%, respectively....

  6. Action Recognition using Motion Primitives

    DEFF Research Database (Denmark)

    Moeslund, Thomas B.; Fihl, Preben; Holte, Michael Boelstoft

    the actions as a sequence of temporal isolated instances, denoted primitives. These primitives are each defined by four features extracted from motion images. The primitives are recognized in each frame based on a trained classifier resulting in a sequence of primitives. From this sequence we recognize......The number of potential applications has made automatic recognition of human actions a very active research area. Different approaches have been followed based on trajectories through some state space. In this paper we also model an action as a trajectory through a state space, but we represent...... different temporal actions using a probabilistic Edit Distance method. The method is tested on different actions with and without noise and the results show recognizing rates of 88.7% and 85.5%, respectively....

  7. La mort d’un couple : prière(s) et vie publiques

    OpenAIRE

    Touzeil-Divina, Mathieu

    2009-01-01

    Si, avant la Loi du 5 décembre 1905, les Eglises et l’Etat concrétisaient matériellement leurs liens étroits par des rites officiels nommés prières publiques, ceux-ci sont censés avoir été supprimés depuis. C’est l’histoire de cette suppression (après en avoir retenu une définition) qui est ici envisagée à travers trois secteurs cardinaux de l’action administrative : la vie universitaire, parlementaire et judiciaire. Dans ces trois hypothèses les prières publiques ont été supprimées de façon ...

  8. Récits de vie d’adolescents. Humeur dépressive et figures parentales

    Directory of Open Access Journals (Sweden)

    Poudat Céline

    2014-07-01

    Full Text Available La présente étude se propose d’explorer d’explorer les liens entre l’humeur dépressive et le langage sur la base d’un corpus de récits de vie oraux spontanés produits par 206 adolescents âgés de 12 à 18 ans. On se concentrera plus spécifiquement sur les représentations des figures d’attachement parentales dans les discours, premiers paramètres à jouer un rôle déterminant pour spécifier les différences d’humeur de l’adolescent, en mobilisant des méthodes issues de l’analyse de données textuelles et de la linguistique de corpus.

  9. AGUA TIBIA PRIMITIVE AREA, CALIFORNIA.

    Science.gov (United States)

    Irwin, William P.; Thurber, Horace K.

    1984-01-01

    The Agua Tibia Primitive Area in southwestern California is underlain by igneous and metamorphic rocks that are siilar to those widely exposed throughout much of the Peninsular Ranges. To detect the presence of any concealed mineral deposits, samples of stream sediments were collected along the various creeks that head in the mountain. As an additional aid in evaluating the mineral potential, an aeromagnetic survey was made and interpreted. A search for records of past or existing mining claims within the primitive area was made but none was found. Evidence of deposits of metallic or nonmetallic minerals was not seen during the study.

  10. Chemistry of primitive solar material

    International Nuclear Information System (INIS)

    Barshay, S.S.; Lewis, J.S.

    1976-01-01

    The chemical processes that occurred in the cooler, outer regions of the primitive solar nebula at the time of intimate chemical contact between preplanetary condensate and nebular gas constitute the subject matter of this review. Condensation models are described and tested against the observed properties of the planets, their satellites, and the asteroids. 6 figs., 2 tables, 48 refs

  11. Cryptographic Primitives with Quasigroup Transformations

    OpenAIRE

    Mileva, Aleksandra

    2010-01-01

    Cryptology is the science of secret communication, which consists of two complementary disciplines: cryptography and cryptanalysis. Cryptography is dealing with design and development of new primitives, algorithms and schemas for data enciphering and deciphering. For many centuries cryptographic technics have been applied in protection of secrecy and authentication in diplomatic, political and military correspondences and communications. Cryptanalysis is dealing with different attacks on c...

  12. Physique du deuil. Note sur la dernière vie de Roland Barthes

    Directory of Open Access Journals (Sweden)

    Maïté Snauwaert

    2013-03-01

    Full Text Available Les remarques sur la tenue de la maison et du corps dans le quotidien domestique, conçue comme une éthique de la fidélité à la mère récemment disparue, apparaissent dans l’écrit privé du Journal de deuil de Roland Barthes comme un écho des observations faites dans le cours sur La préparation du roman. Participant d’une physique du vivre et de l’habiter qui met l’accent sur l’entretien quotidien du lieu, le silence et la difficulté de tout voyage, les « notations » du journal rendent compte de la condensation dans le corps de l’épreuve du deuil, et de la prise de conscience d’un dernier âge de la vie.In the personal writings of Journal de deuil, Roland Barthes’ remarks regarding the maintenance of the home and body are conceived of as an ethic of faithfulness to his recently deceased mother. They are considered in this article as an echo to the observations he makes during his lectures in the course La préparation du roman. Both emphasize the physicality of everyday life and the role played by one’s relationship to the home. By stressing the necessity of silence and the difficulties of leaving “the apartment”, the brief “notations” in the diary translate the physical concentration of the mourning experience, as well as the emergent understanding of a final stage of life.

  13. From Realistic to Primitive Models: A Primitive Model of Methanol

    Czech Academy of Sciences Publication Activity Database

    Vlček, Lukáš; Nezbeda, Ivo

    2003-01-01

    Roč. 101, č. 19 (2003), s. 2987-2996 ISSN 0026-8976 R&D Projects: GA AV ČR IAA4072303; GA AV ČR IAA4072309 Grant - others:NATO(XX) PST.CLG 978178/6343 Institutional research plan: CEZ:AV0Z4072921 Keywords : primitive model * methanol Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 1.591, year: 2003

  14. Labourer: Globalement plus néfaste sur la vie du sol que les pesticides

    DEFF Research Database (Denmark)

    Hupin, Frédérique; Petersen, Søren O.; Krogh, Paul Henning

    2017-01-01

    Danemark ont étudié ces interactions pendant deux ans. Le rapport vient d’être publié au Danemark. Les résultats confirment que les effets des pesticides sur la vie du sol sont assez fortement influen-cés par le type de travail du sol et le type de fertilisation. Dans quelle mesure, dans quel sens, quels......Quels sont les impacts de l’application de produits phytosanitaires sur les populations de vers de terre et des autres organismes du sol ? Ces impacts sont-ils simples et directs ? Ou sont-ils influencés par le travail du sol et la fertilisation ? Des recherches menées à l’université d’Aarhus au...... sont les organismes affectés ? TCS a contacté pour vous les deux principaux protagonistes de l’étude : les chercheurs Danois Søren Petersen et Paul Henning Krogh. What are the impacts of the application of plant protection products on earthworms and other soil organisms? Are these impacts simple...

  15. A Proof-Theoretic Account of Primitive Recursion and Primitive Iteration

    DEFF Research Database (Denmark)

    Cherabini, Luca; Danvy, Olivier

    2011-01-01

    We revisit both the usual ``going-up'' induction principle and Manna and Waldinger's ``going-down'' induction principle for primitive recursion,`a la Goedel, and primitive iteration, `a la Church. We use 'Kleene's trick' to show that primitive recursion and primitive iiteration are as expressive...

  16. SPANISH PEAKS PRIMITIVE AREA, MONTANA.

    Science.gov (United States)

    Calkins, James A.; Pattee, Eldon C.

    1984-01-01

    A mineral survey of the Spanish Peaks Primitive Area, Montana, disclosed a small low-grade deposit of demonstrated chromite and asbestos resources. The chances for discovery of additional chrome resources are uncertain and the area has little promise for the occurrence of other mineral or energy resources. A reevaluation, sampling at depth, and testing for possible extensions of the Table Mountain asbestos and chromium deposit should be undertaken in the light of recent interpretations regarding its geologic setting.

  17. Contribution des causes de décès aux gains en espérance de vie à 65 ans au Canada et l’influence de leur profil par âge, 1979-2007

    DEFF Research Database (Denmark)

    Bergeron Boucher, Marie-Pier

    variation par âge des causes de décès influencent les tendances des taux de mortalité par cause. Les résultats montrent que les progrès de l’espérance de vie à 65 ans sont encore majoritairement dus à la diminution de la mortalité liée aux maladies cardiovasculaires. Toutefois, ces dernières causes de décès...... dans l’évolution de l’espérance de vie proviennent de modifications dans les tendances de certaines causes de décès et de leurs interactions. Cette étude analyse la contribution respective de certaines causes de décès aux changements observés de l’espérance de vie, mais aussi comment les profils de...... ne sont pas les seules à contribuer aux progrès en espérance de vie, puisque les taux de mortalité des dix principales causes de décès au Canada ont connu une diminution depuis 1979, malgré des profils de variation par âge différents....

  18. Le débat sur l’euthanasie et les pratiques en fin de vie en France et en Allemagne. Une étude comparative

    Directory of Open Access Journals (Sweden)

    Ruth Horn

    2009-12-01

    Full Text Available Ce travail a pour objectif de comprendre comment la question morale du droit de déterminer le moment de sa mort émerge dans une société et comment elle est abordée, notamment dans deux pays, la France et l’Allemagne, qui interdisent l’euthanasie. En effet, bien que dans les pays occidentaux, les médecins et les patients rencontrent des problèmes semblables face à une situation de maladie grave ou de fin de vie, chaque société a son histoire propre avec des spécificités en matière de normes pr...

  19. Cycle de vie et événements-ruptures d’un réseau de franchise : conséquences sur la relation franchiseur-franchisés

    OpenAIRE

    Chanut , Odile

    2008-01-01

    International audience; Cycle de vie et événements-ruptures d'un réseau de franchise : conséquences sur la relation franchiseur-franchisés. Résumé : Cette recherche de nature exploratoire a pour objectif d'étudier l'influence des évolutions stratégiques des réseaux de franchise sur la relation franchiseur-franchisés. La première partie expose le cadre d'analyse retenu. Le temps est appréhendé dans son aspect continu à travers le concept de cycle de vie et dans son aspect discontinu à travers ...

  20. Efficient Synchronization Primitives for GPUs

    OpenAIRE

    Stuart, Jeff A.; Owens, John D.

    2011-01-01

    In this paper, we revisit the design of synchronization primitives---specifically barriers, mutexes, and semaphores---and how they apply to the GPU. Previous implementations are insufficient due to the discrepancies in hardware and programming model of the GPU and CPU. We create new implementations in CUDA and analyze the performance of spinning on the GPU, as well as a method of sleeping on the GPU, by running a set of memory-system benchmarks on two of the most common GPUs in use, the Tesla...

  1. La prolongation de la vie humaine selon Francis Bacon. Ou : quel Tithon voulons-nous être ?

    Directory of Open Access Journals (Sweden)

    Dominique Weber

    2011-07-01

    Full Text Available Afin de comprendre avec exactitude la manière dont Francis Bacon envisage la question de la prolongation de la vie humaine, il faut impérativement examiner l’assise théologique de la réflexion du philosophe à ce sujet. Il convient aussi de restituer l’intégration de cette réflexion dans les objectifs plus amples de la philosophie naturelle nouvelle. Enfin, il est nécessaire de comprendre les dimensions proprement morales de la question. Car la prolongation de la vie humaine n’est pas seulement, au sein de la philosophie naturelle nouvelle, un cas parmi d’autres des recherches qu’il faut désormais effectuer : en réalité, c’est elle qui lui donne et qui lui fixe son sens ; avec elle se joue l’effectivité de l’identité espérée entre science et puissance. Mais il faut encore préciser qu’il ne s’agit aucunement pour l’homme de vieillir pour vieillir : il s’agit pour lui de pouvoir vieillir bien. Les leçons que Bacon tire de la fable de Tithon sont ici véritablement décisives.

  2. Compositional studies of primitive asteroids

    International Nuclear Information System (INIS)

    Vilas, F.

    1988-01-01

    The composition of primitive asteroids and their relationship to satellites in the solar system will be studied by analyzing existing narrowband charge coupled device (CCD) reflectance spectra, acquiring additional spectra of asteroids and small satellites in the 0.5 to 1.0 micrometer spectral range, and exploring possibilities for obtaining compositional information in the blue-UV spectral region. Comparison with laboratory spectra of terrestrial chlorites and serpentines (phyllosilicates) and the clay minerals found in carbonaceous chondrite meteorites will continue. During 1987, narrowband CCD reflectance spectra of 17 additional asteroids were acquired. These spectra and spectra of 34 other asteroids have been used primarily for two studies: weak absorption features similar to those due to Fe2(+) and Fe2(+) - Fe3(+) transitions in iron oxides f ound in terrestrial chlorites and serpentines and carbonaceous chondrites have been identified in some primitive asteroid spectra. There is a first indication that asteroids grouped by heliocentric distance show similar weak absorption features. Nonparametric statistics are being applied to test the hypothesis of discrete remnants of a gradation in composition of outer-belt asteroids

  3. [Cranial trepanation in primitive cultures].

    Science.gov (United States)

    González-Darder, José Manuel

    A review is presented on cranial trepanations performed by primitive cultures. The scientific interest in this topic began after the discovery in 1965 by Ephraim G. Squier of a pre-Columbian trepanated skull, and studied by Paul Broca in Paris. Pseudotrepanation and other types of cranial manipulation are reviewed. The techniques, technology, and instruments for every type of trepanation are well known. There are a surprisingly high percentage of cases showing signs of post-trepanation survival. Indications for trepanation are speculative, perhaps magic. Although trepanation in primitive cultures is widespread around the world, and throughout time, the main fields of interest are the Neolithic Period in Europe, the pre-Columbian Period in Andean South America, and some contemporaneous Pacific and African tribes. This particular trepanation procedure has no relationship with modern Neurosurgery, or with trepanations with therapeutic purposes performed since the Greco-Roman period in Europe, and afterwards around the world. Copyright © 2016 Sociedad Española de Neurocirugía. Publicado por Elsevier España, S.L.U. All rights reserved.

  4. Breast metastases primitive extra mammary

    International Nuclear Information System (INIS)

    Terzieff, V.; Vázquez, A.; Alonso, I.; Sabini, G.

    2004-01-01

    Less than 3% of all breast cancers originate from a primitive extra mammary. In 40% of cases it is the first manifestation of the primitive properly studied but 80% are associated with widely disseminated disease. It typically presents as a nodule on external quadrant s painful in half the cases. The majority (60%) of metastases derived from breast contralateral breast tumors are believed to via the lymphatic system. of the ; extra mammary the most common tumors are melanoma; hematologic and neuroendocrine. Although some imaging characteristics can guide diagnosis is histological. Cytology has good performance in experienced hands; but up to 25% of cases there may be difficulty in establishing diagnosis. Treatment depends on the type of tumor. Mastectomy should not be practiced or axillary clearance routine as is generally the context of disease disseminated. Radiation therapy may be useful for local control. It has been proposed laser ablation but no experience with it. The overall prognosis is bad. For a man of 45 with a breast metastasis occurs only a clear cell carcinoma of the kidney

  5. EVOLUTION DU CONCEPT DE LA QUALITE DE VIE AU MAROC : CAS DE LA POLYARTHRITE RHUMATOÏDE ET DE LA SPONDYLOARTHRITE ANKYLOSANTE

    Directory of Open Access Journals (Sweden)

    Hanan RKAIN

    2017-05-01

    Full Text Available La polyarthrite rhumatoïde et la spondylarthrite ankylosante sont à la tête des rhumatismes inflammatoires chroniques (RIC. La souffrance engendrée par la douleur chronique rhumatismale, le retentissement sur le vécu journalier des patients et leur entourage, altèrent incontestablement la qualité de vie des patients. Ce travail reprend de manière succincte les études ayant abordé cet aspect chez les patients marocains souffrant de PR et de SPA. Ces travaux font l’unanimité sur la perturbation de la qualité de vie des patients marocains souffrant de ces RIC en affectant considérablement les domaines physique, psychique et social. Les études longitudinales, réalisées en particulier dans la PR, attestent de l’intérêt de la prise en charge adéquate de ces RIC pour améliorer la qualité de vie du patient marocain.

  6. William Grossin, J’ai connu le Moyen-Âge. Récit de vie : enfance

    Directory of Open Access Journals (Sweden)

    Charles Gadea

    2009-06-01

    Full Text Available À côté de son œuvre scientifique, William Grossin a publié une série de livres relevant de divers genres : plusieurs romans, des poèmes satiriques et un récit de vie évoquant son enfance. Avec un peu d’attention, on pourra reconnaître dans chacun d’eux la « touche » d’un auteur tardif mais productif. Il y a d’abord  son style : travaillé, nerveux, vivant, sobre et même un peu austère mais sans excès, comme certains Vouvray secs. Les mots sont choisis avec soin, à tel point que les phrases com...

  7. Les pousse-pousse dans le transport des marchandises dans la ...

    African Journals Online (AJOL)

    En se servant d'une démarche méthodologique basée sur la recherche documentaire, l'observation et les enquêtes, le présent article montre les facteurs favorables au développement de cette activité et son importance dans la vie des pousseurs. Une technique d'échantillonnage raisonné a permis d'enquêter 50 ...

  8. Les activités sportives « hybrides » comme réponse à l’accélération des rythmes de vie

    OpenAIRE

    Quidu, Matthieu

    2017-01-01

    Dans le monde contemporain, la majorité des acteurs sociaux fait quotidiennement l’expérience d’une accélération effrénée des rythmes de vie. Cette course contre la montre, qui tend à devenir chronique, semble affecter non seulement la sphère des obligations professionnelles et familiales mais aussi le champ des pratiques de loisirs. Dans un contexte de pénurie temporelle, où le temps est devenu une denrée aussi rare que précieuse, consentir d’y consacrer une partie à des activités non produc...

  9. Calculation of the life-time of thermal neutrons in a heterogeneous moderator: graphite-cadmium. Experimental verification using the pulsed neutrons method; Calcul du temps de vie des neutrons thermiques dans un moderateur heterogene: graphite-cadmium. Verification experimentale par la methode des neutrons pulses

    Energy Technology Data Exchange (ETDEWEB)

    Jean, Lalande [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1964-07-01

    The heterogeneous medium is made up of an oblong assembly consisting 23 cm cells containing a cadmium bar having a diameter of 3.31 cm. The experimental value found for the lattice absorption v{sigma}a = 941 sec{sup -1} is in agreement with the value calculated from a one-group theory for one cell taking d = 2.55 {+-} 0.12 cm for the extrapolation distance in the cadmium rod. (author) [French] Le milieu heterogene est constitue par un assemblage parallelepipedique de cellules carrees de pas 23 cm contenant une barre de cadmium de diametre 3,31 cm. La valeur experimentale trouvee pour l'absorption du reseau v{sigma}a = 941 s{sup -1} concorde avec la valeur calculee par une theorie a un groupe sur une cellule en prenant comme distance d'extrapolation dans la barre de cadmium d = 2,55 {+-} 0,12 cm. (auteur)

  10. Qualité de vie et consommation soutenable : une perspective pratique

    Directory of Open Access Journals (Sweden)

    Patrick Mardellat

    2010-06-01

    Full Text Available Ce texte tente de parvenir à une meilleure compréhension du rôle de la consommation relativement à l’objectif de soutenabilité de nos modes de vie. À cette fin, on croise deux thématiques : consommation et bonheur, consommation et soutenabilité. Les paradigmes standard et institutionnalistes de la consommation soutenable sont questionnés du point de vue de la tradition pratique – aristotélicienne – qui en montre les limites et les insuffisances. L’approche quantitative de la limitation de la consommation caractéristique de ces deux approches conduit à une impasse. La réception de cette notion de consommation soutenable dans la tradition pratique est ensuite esquissée, faisant apparaître l’existence d’une vertu propre à l’économie, d’un lieu et d’une institution de la consommation accueillis dans une constellation de régimes politiques possibles.This text aims to reach a better understanding of the role of consumption with regard to the objective of sustainability of our lifestyles. We cross two themes: consumption and happiness, consumption and sustainability. The standard and institutionalist paradigms of sustainable consumption are questioned parts from the viewpoint of the Aristotelian tradition which shows their limits and failures. The quantitative approach of the limitation of consumption specific of these two approaches leads to a dead end. Then the reception of this notion of sustainable consumption in the practical tradition is sketched. The existence of an appropriate virtue for the economy, a place and an institution of the consumption welcomed in a constellation of possible political regimes clearly appear as the keystones of the practical conception of sustainable consumption.  

  11. Primitive recursive realizability and basic propositional logic

    NARCIS (Netherlands)

    Plisko, Valery

    2007-01-01

    Two notions of primitive recursive realizability for arithmetic sentences are considered. The first one is strictly primitive recursive realizability introduced by Z. Damnjanovic in 1994. We prove that intuitionistic predicate logic is not sound with this kind of realizability. Namely there

  12. Primitive Based Action Representation and Recognition

    DEFF Research Database (Denmark)

    Baby, Sanmohan; Krüger, Volker

    2009-01-01

    a sequential and statistical     learning algorithm for   automatic detection of the action primitives and the action grammar   based on these primitives.  We model a set of actions using a   single HMM whose structure is learned incrementally as we observe   new types.   Actions are modeled with sufficient...

  13. Dynamic Primitives in the Control of Locomotion

    Directory of Open Access Journals (Sweden)

    Neville eHogan

    2013-06-01

    Full Text Available Humans achieve locomotor dexterity that far exceeds the capability of modern robots, yet this is achieved despite slower actuators, imprecise sensors and vastly slower communication. We propose that this spectacular performance arises from encoding motor commands in terms of dynamic primitives. We propose three primitives as a foundation for a comprehensive theoretical framework that can embrace a wide range of upper- and lower-limb behaviors. Building on previous work that suggested discrete and rhythmic movements as elementary dynamic behaviors, we define submovements and oscillations: As discrete movements cannot be combined with sufficient flexibility, we argue that suitably-defined submovements are primitives. As the term rhythmic may be ambiguous, we define oscillations as the corresponding class of primitives. We further propose mechanical impedances as a third class of dynamic primitives, necessary for interaction with the physical environment. Combination of these three classes of primitive requires care. One approach is through a generalized equivalent network: a virtual trajectory composed of simultaneous and/or sequential submovements and/or oscillations that interacts with mechanical impedances to produce observable forces and motions. Reliable experimental identification of these dynamic primitives presents challenges: Identification of mechanical impedances is exquisitely sensitive to assumptions about their dynamic structure; identification of submovements and oscillations is sensitive to their assumed form and to details of the algorithm used to extract them. Some methods to address these challenges are presented. Some implications of this theoretical framework for locomotor rehabilitation are considered.

  14. Dynamic primitives in the control of locomotion.

    Science.gov (United States)

    Hogan, Neville; Sternad, Dagmar

    2013-01-01

    Humans achieve locomotor dexterity that far exceeds the capability of modern robots, yet this is achieved despite slower actuators, imprecise sensors, and vastly slower communication. We propose that this spectacular performance arises from encoding motor commands in terms of dynamic primitives. We propose three primitives as a foundation for a comprehensive theoretical framework that can embrace a wide range of upper- and lower-limb behaviors. Building on previous work that suggested discrete and rhythmic movements as elementary dynamic behaviors, we define submovements and oscillations: as discrete movements cannot be combined with sufficient flexibility, we argue that suitably-defined submovements are primitives. As the term "rhythmic" may be ambiguous, we define oscillations as the corresponding class of primitives. We further propose mechanical impedances as a third class of dynamic primitives, necessary for interaction with the physical environment. Combination of these three classes of primitive requires care. One approach is through a generalized equivalent network: a virtual trajectory composed of simultaneous and/or sequential submovements and/or oscillations that interacts with mechanical impedances to produce observable forces and motions. Reliable experimental identification of these dynamic primitives presents challenges: identification of mechanical impedances is exquisitely sensitive to assumptions about their dynamic structure; identification of submovements and oscillations is sensitive to their assumed form and to details of the algorithm used to extract them. Some methods to address these challenges are presented. Some implications of this theoretical framework for locomotor rehabilitation are considered.

  15. Discovery of Intrinsic Primitives on Triangle Meshes

    KAUST Repository

    Solomon, Justin; Ben-Chen, Mirela; Butscher, Adrian; Guibas, Leonidas

    2011-01-01

    The discovery of meaningful parts of a shape is required for many geometry processing applications, such as parameterization, shape correspondence, and animation. It is natural to consider primitives such as spheres, cylinders and cones

  16. Discovery of Intrinsic Primitives on Triangle Meshes

    KAUST Repository

    Solomon, Justin

    2011-04-01

    The discovery of meaningful parts of a shape is required for many geometry processing applications, such as parameterization, shape correspondence, and animation. It is natural to consider primitives such as spheres, cylinders and cones as the building blocks of shapes, and thus to discover parts by fitting such primitives to a given surface. This approach, however, will break down if primitive parts have undergone almost-isometric deformations, as is the case, for example, for articulated human models. We suggest that parts can be discovered instead by finding intrinsic primitives, which we define as parts that posses an approximate intrinsic symmetry. We employ the recently-developed method of computing discrete approximate Killing vector fields (AKVFs) to discover intrinsic primitives by investigating the relationship between the AKVFs of a composite object and the AKVFs of its parts. We show how to leverage this relationship with a standard clustering method to extract k intrinsic primitives and remaining asymmetric parts of a shape for a given k. We demonstrate the value of this approach for identifying the prominent symmetry generators of the parts of a given shape. Additionally, we show how our method can be modified slightly to segment an entire surface without marking asymmetric connecting regions and compare this approach to state-of-the-art methods using the Princeton Segmentation Benchmark. © 2011 The Author(s).

  17. Primitive and definitive erythropoiesis in mammals

    Directory of Open Access Journals (Sweden)

    James ePalis

    2014-01-01

    Full Text Available Red blood cells (RBCs, which constitute the most abundant cell type in the body, come in two distinct flavors- primitive and definitive. Definitive RBCs in mammals circulate as smaller, anucleate cells during fetal and postnatal life, while primitive RBCs circulate transiently in the early embryo as large, nucleated cells before ultimately enucleating. Both cell types are formed from lineage-committed progenitors that generate a series of morphologically identifiable precursors that enucleate to form mature RBCs. While definitive erythroid precursors mature extravascularly in the fetal liver and postnatal marrow in association with macrophage cells, primitive erythroid precursors mature as a semi-synchronous cohort in the embryonic bloodstream. While the cytoskeletal network is critical for the maintenance of cell shape and the deformability of definitive RBCs, little is known about the components and function of the cytoskeleton in primitive erythroblasts. Erythropoietin (EPO is a critical regulator of late-stage definitive, but not primitive, erythroid progenitor survival. However, recent studies indicate that EPO regulates multiple aspects of terminal maturation of primitive murine and human erythroid precursors, including cell survival, proliferation, and the rate of terminal maturation. Primitive and definitive erythropoiesis share central transcriptional regulators, including Gata1 and Klf1, but are also characterized by the differential expression and function of other regulators, including myb, Sox6, and Bcl11A. Flow cytometry-based methodologies, developed to purify murine and human stage-specific erythroid precursors, have enabled comparative global gene expression studies and are providing new insights into the biology of erythroid maturation.

  18. DES EFFETS DURABLES DES VIES TRANSFORMÉES

    International Development Research Centre (IDRC) Digital Library (Canada)

    Son but est simple : veiller à ce que les personnes les plus vulnérables dans le monde, en particulier ... Simple et pourtant très efficace, le filtre biosable fournit de l'eau potable dans plus de 300 000 foyers de par le ... de rétablir la fertilité des sols dégradés par l'extraction de l'argile nécessaire à la fabrication de briques, ...

  19. Primitive Based Action Representation and recognition

    DEFF Research Database (Denmark)

    Baby, Sanmohan

    The presented work is aimed at designing a system that will model and recognize actions and its interaction with objects. Such a system is aimed at facilitating robot task learning. Activity modeling and recognition is very important for its potential applications in surveillance, human-machine i......The presented work is aimed at designing a system that will model and recognize actions and its interaction with objects. Such a system is aimed at facilitating robot task learning. Activity modeling and recognition is very important for its potential applications in surveillance, human......-machine interface, entertainment, biomechanics etc. Recent developments in neuroscience suggest that all actions are a compositions of smaller units called primitives. Current works based on primitives for action recognition uses a supervised framework for specifying the primitives. We propose a method to extract...... primitives automatically. These primitives are to be used to generate actions based on certain rules for combining. These rules are expressed as a stochastic context free grammar. A model merging approach is adopted to learn a Hidden Markov Model to t the observed data sequences. The states of the HMM...

  20. Fait saillant : Du savoir à l'action : Améliorer la vie des femmes ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Fait saillant : Du savoir à l'action : Améliorer la vie des femmes. 18 avril 2016. Image. Débat dexperts pour améliorer la vie des femmes. TECKLES PHOTOGRAPHY. Les services de garde d'enfants pourraient-ils être le chaînon manquant à l'autonomisation des femmes en Inde, au Kenya et au Canada? Comment la ...

  1. L'astronomie dans le monde

    OpenAIRE

    Manfroid, Jean

    2004-01-01

    Cassini; Distance des Pléiades; Gaz très chaud au centre de notre Galaxie; FUSE; Peser une étoile froide; Masse d'une étoile; Naines brunes; Sursaut gamma dans la Galaxie; Trou noir record; Masse des neutrinos; Un satellite de notre Galaxie; Une jumelle de notre Galaxie; Vie sur Mars?; Rencontre intergalactique; Hawking change d'avis; Pollution lumineuse; Sursauts gamma; Le système solaire, une exception?; Babar et l'antimatière; Spicules; Tau Ceti; Anneau de poussières; Naissance d'une étoil...

  2. MR imaging of persistent primitive trigeminal artery

    International Nuclear Information System (INIS)

    Ashikaga, Ryuichiro; Araki, Yutaka; Ono, Yukihiko; Ishida, Osamu; Mabuchi, Nobuhisa.

    1997-01-01

    The persistent trigeminal artery is the most common anomaly of the primitive carotid-vertebrobasilar anastomoses. We reviewed MR images and MR angiographies of 11 patients with primitive trigeminal artery. In 8 of the 11 cases, PTA were identified with conventional long TR spin-echo images. In 8 of 11 cases, a hypoplastic basilar trunk associated with PTA was seen on both MR images and MR angiographies. In 7 of 11 cases, a hypoplasia or agenesis of the ipsilateral posterior communicating artery was seen on MR angiographies. (author)

  3. Stratégie de survie et culture de jeunes dans les marchés urbains ...

    African Journals Online (AJOL)

    Cet article porte sur la vie quotidienne des adolescentes travailleuses dans les marchés urbains et péri-urbains de Dakar, capitale du Sénégal. Elle vise à approfondir la compréhension et la connaissance sur les stratégies de survie et la socialisation des jeunes dans les rues des villes sénégalaises et sur les logiques de ...

  4. Evolution of Computational Toxicology-from Primitive ...

    Science.gov (United States)

    Presentation at the Health Canada seminar in Ottawa, ON, Canada on Nov. 15. 2016 Presentation at the Health Canada seminar in Ottawa, ON, Canada on Nov. 15. 2016 on the Evolution of Computational Toxicology-from Primitive Beginnings to Sophisticated Application

  5. Melville and the Tradition of Primitive Utopia.

    Science.gov (United States)

    Beauchamp, Gorman

    1981-01-01

    Discusses the relationships among the myth of the Golden Age, the concept of the Noble Savage, and the dream of Utopia. Uses Lewis Mumford's division of utopias into two basic types, i.e., reconstruction and escape utopias, to examine Herman Melville's "Typee" as an example of the primitive escapist utopia. (Editor/DMM)

  6. Particules de vie conversation avec François Englert

    CERN Document Server

    Baré, François

    2014-01-01

    Ce fut l'événement de l'année 2013 : François Englert obtenait le prix Nobel de physique pour la découverte du boson. Le premier Belge à être honoré par ce prix depuis Ilya Prigogine en 1977. Françoise Baré, journaliste à la RTBF, et Guy Duplat, ingénieur civil physicien, ex-rédacteur en chef du Soir, auteur de Une vague belge (Racine) et journaliste à La Libre Belgique, ont rencontré plusieurs fois, longuement, François Englert, avant son prix et après celui-ci. Ils étaient là lors de l'annonce de la découverte du boson de BEH, lors de l'annonce du prix Nobel et, à Stockholm, lors de la remise du prix par le roi de Suède. À eux, François Englert a accepté de raconter sa chasse au boson, sa vie, ses idées. Au fil de la conversation se dessine alors le portrait attachant d'un homme brillant et libre, habité par un rêve, celui de comprendre, de décortiquer ce monde et de chercher la beauté de ses lois. Avec, en annexe, les grands points scientifiques qui éclairent le travail de F...

  7. L'analyse de cycles de vie (ACV des systèmes d’assainissement : un outil complémentaire d’aide à la décision

    Directory of Open Access Journals (Sweden)

    RISCH, Eva

    2012-12-01

    Full Text Available Dans le domaine de l’assainissement, l’analyse de cycle de vie (ACV se positionne de plus en plus comme un outil décisionnel du choix des filières de traitement et de leur gestion technique. Cet article nous présente ici les résultats d’ACV obtenus en petites et moyennes collectivités pour des stations d’épuration à boues activées en très faible charge et des filtres plantés de roseaux.

  8. Improved Techniques for Low-Flux Measurement of Prompt Neutron Lifetime, Conversion Ratio and Fast Spectra; Methodes Perfectionnees de Mesure de la Duree de Vie des Neutrons Instantanes, du Rapport de Conversion et des Spectres de Neutrons Rapides, dans un Reacteur a Bas Flux; Usovershenstvovannye metody izmereniya vremeni zhizni mgnovennykh nejtronov, koehffitsienta konversii i spektra bystrykh nejtronov pri slabykh potokakh nejtronov; Tecnicas Perfeccionadas para la Determinacion del Periodo de los Neutrones Inmediatos, la Razon de Conversion y los Espectros de Neutrones Rapidos, con Flujos Reducidos

    Energy Technology Data Exchange (ETDEWEB)

    Armani, R. J.; Bennett, E. F.; Brenner, M. W.; Bretscher, M. M.; Cohn, C. E.; Huber, R. J.; Kaufmann, S. G.; Redman, W. C. [Argonne National Laboratory, Argonne, IL (United States)

    1964-02-15

    been concentrated on the use of pulse shape analysis to reject gamma-ray initiated events in hydrogen recoil proportional counters and the introduction of collimation in Li{sup 6}F solid-state detector ''sandwiches'' to improve the resolution obtained. A number of such instruments have been built and their response to mono-kinetic and reactor neutrons has been investigated. Use of the gamma-ray rejection technique was equivalent to a several hundred-fold effective reduction in gamma-ray sensitivity of the recoil counter and extends the usable range down to at least 30 keV. For the Li{sup 6} solid-state devices, resolutions as low as 70 keV full-width at half maximum (1.5%) have been observed for the sum pulse in thermal neutron irradiation. (author) [French] Dans le programme des reacteurs de puissance zero, on a utilise diverses methodes statistiques pour mesurer le rapport duree de vie des neutrons instantanes/duree de vie des neutrons differes. Les auteurs ont mis au point une methode nouvelle, qui consiste a analyser le bruit du reacteur a l'aide d'un filtre passe-bande, et ont perfectionne d'autres methodes telles que la mesure, a l'aide d'un compteur a impulsions, de la frequence des coincidences retardees en fonction du temps de retard et celle de la variance relative des flux de neutrons integres en fonction du temps d'integration. Ils ont etudie les domaines dans lesquels les differentes methodes peuvent etre utilisees avec le plus d'interet. II se sont aussi preoccupes de l'interpretation des resultats de ces mesures, et montrent que l'interpretation fondee sur un modele cinetique simple peut s'appliquer dans la pratique a une grande diversite de cas. Les auteurs decrivent plusieurs perfectionnements de leur methode d'activation pour la determination du rapport de conversion: application de techniques chimiques tres sensibles pour confirmer les resultats obtenus; correction pour les coups parasites en utilisant, dans la determination de la capture, des

  9. Vie dans l'Univers: l'histoire d'une longue quete

    Science.gov (United States)

    Briot, Danielle

    2017-07-01

    The search for life in the Universe is a very old quest of humanity. This search initiated the science nammed astrobiology, or bioastronomy, or exobiology. We give some elements for the history of this science, since the Greek antiquity up to now, in the occidental civilisation. After reminding the main steps of this history during Antiquity, the Middle Ages and the Renaissance, we point out some little known or unknown studies published during the Modern and Contemporary epochs. We specially develop the studies of two pioneers during the twentieth century: Ary Sternfeld, a Polish scientist who was also a pioneer of astronautics, and Gavril Tikhov, a Russian astronomer who created the astrobotany.

  10. Rôle des femmes dans la vie politique, la contestation politique et la ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    L'initiative Gouvernance démocratique, droits des femmes et égalité entre les .... un accord de coopération scientifique et technologique en appui aux projets de ... de l'Institut d'étude du développement international de l'Université McGill.

  11. Protection des vies humaines et des moyens de subsistance dans la ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    6 juin 2014 ... ... mais l'on craint que ces phénomènes deviennent de plus en plus destructeurs au fur et à ... tirent leur subsistance de la lagune, de ses environs et de son delta. ... Chilika: An Integrated Management Planning Framework for ...

  12. Initiative Villes ciblées - amélioration du milieu de vie dans les ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Impacts of the tsunami on poverty in Sri Lanka. 129294.pdf. Documents. Urban Poverty and Environment Programme : Colombo; monitoring and evaluation component; monitoring findings as of December 2008 - April 2009; outcome mapping no. 2. 129292.pdf. Documents. Statistical handbook on baseline survey : part 1; ...

  13. Initiative Villes ciblées - amélioration du milieu de vie dans les ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    ... monitoring and evaluation component; monitoring findings as of December 2008 - April 2009; outcome mapping no. 2. 129292.pdf. Papers. Statistical handbook on baseline survey : part 1; data tables; (Focus City Programme : Community based Assessment and Improvement of Living Environment in USSs and Environs; ...

  14. Fonction et signe de l'arbre dans l'espace urbain de Lomé

    OpenAIRE

    Tchamie, T.T.K.; Badameli, M.K.

    1998-01-01

    Le monde végétal est inscrit naturellement dans la conscience des population africaines. Il n'est donc pas étonnant que l'arbre soit omniprésent dans les champs et les agglomérations. Cette présence de l'arbre s'explique par son importance dans la vie des hommes : rôle alimentaire aussi bien pour les hommes que pour les animaux, rôle réligieux, rôle écologique, rôle énergétique...

  15. La mort d’un couple : prière(s) et vie publiques Death of a couple: prayer(s) and public life

    OpenAIRE

    Mathieu Touzeil-Divina

    2009-01-01

    Si, avant la Loi du 5 décembre 1905, les Eglises et l’Etat concrétisaient matériellement leurs liens étroits par des rites officiels nommés prières publiques, ceux-ci sont censés avoir été supprimés depuis. C’est l’histoire de cette suppression (après en avoir retenu une définition) qui est ici envisagée à travers trois secteurs cardinaux de l’action administrative : la vie universitaire, parlementaire et judiciaire. Dans ces trois hypothèses les prières publiques ont été supprimées de façon ...

  16. Entrer dans les squats ouverts

    OpenAIRE

    2015-01-01

    Au cœur des métropoles françaises émergent ici et là des squats, lieux d’habitation et de création affranchis, tournés vers la ville et ses habitants. Vivre en squat constitue un mode de vie, un choix subversif, une forme de résistance au système, autant qu’un recours face aux difficultés sociales. Ce livre nous plonge dans les squats « ouverts » et saisit, par la sociologie, le quotidien de ces populations mouvantes et fortement hétérogènes. Il répond à des questions simples. Qui sont ces sq...

  17. Agir dans l'espace

    OpenAIRE

    Albert, Frédéric; Allain, Sonia; Amalberti, René; Anderson, David I.; Aurnague, Michel; Baccino, Thierry; Baratgin, Jean; Barbu-Roth, Marianne; Beaudouin-Lafon, Michel; Beauvillain, Cécile; Berthoz, Alain; Beugnon, Guy; Bui, Marc; Bullier, Jean; Bullot, Nicolas J.

    2017-01-01

    Le traitement cognitif de l'espace par un être vivant se décompose en différentes phases : il perçoit l'espace – ce qui implique certains mécanismes de catégorisation et d'abstraction –, se le représente, conserve en mémoire cette représentation qu'il peut rappeler et utiliser pour conduire des actions adaptées et interagir de façon optimale avec l'environnement. Ce traitement ainsi défini a déjà fait l'objet d'un grand nombre de travaux dans le domaine des sciences de la vie et de la psychol...

  18. Semantic Primitives of Time and Space in Hong Kong Cantonese.

    Science.gov (United States)

    Tong, Malindy; And Others

    1997-01-01

    Semantic primitives for time and space, as proposed in Natural Semantic Metalanguage theory, are examined for lexical equivalents in Hong Kong Cantonese. Temporal primitives are all found to have clear Cantonese exponents that can be combined as predicted with other metalanguage elements, with two exceptions. Spatial primitives all appear to have…

  19. Eau, terre et vie : Communication participative pour le ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Dans domaine de la recherche sur la gestion des ressources naturelles, les meilleurs modèles sont ceux qui, lors de la prise de décision et de l'identification du projet de recherche et des paramètres de développement, intègrent la participation des membres de la collectivité, des équipes de recherche ou de ...

  20. Survival of the primitive mantle reservoir?

    Science.gov (United States)

    Huang, S.; Jacobsen, S. B.; Mukhopadhyay, S.

    2010-12-01

    The high-3He lavas are thought to originate from a deep primitive mantle source that has not been much modified since the formation of Earth’s core. Comparison of 4He/3He in MORBs and plume lavas indicate that the plume sources must be a lower mantle feature, in agreement with most geophysical inferences. However, the lithophile element isotope systems of plume lavas are not primitive. The idea that the high-3He source is significantly less processed and more primitive than MORB source is clearly supported by mixing trends in plots of 4He/3He versus Sr, Nd and Pb isotope ratios, which have been extrapolated to an inferred 4He/3He of ~17,000 (~43x the atmospheric ratio), a mantle reservoir named PHEM (Primitive HElium Mantle). Slightly lower 4He/3He, ~15,000, were reported for Baffin Island picrites. Recently, Jackson et al. (2010) claimed that some Baffin Island and Greenland picrites with single-stage Pb model ages of ~4.5 Ga have low 4He/3He, and argued that “their source is the most ancient accessible reservoir in the Earth’s mantle, and it may be parental to all mantle reservoirs”. However, the available data are insufficient to make such a claim, and we suggest an alternative interpretation. Specially: 1. Four out of ten Baffin Island and Greenland picrites used by Jackson et al. (2010) have 4He/3He higher than average MORB value and all are far removed from the lowest measured value of 15,000. 2. Five Greenland picrites which cluster around the 4.50 Gyr geochron (Jackson et al., 2010) form a curved 207Pb*/206Pb*-4He/3He trend. This trend is best explained as a mixing line, implying that the single-stage Pb ages of these lavas are meaningless. 3. In a 207Pb*/206Pb*-4He/3He plot, Koolau lavas from Hawaii overlap with Baffin Island and Greenland picrites. If Baffin Island and Greenland picrites represent melts from the primitive mantle based on their Pb and He isotopes (Jackson et al., 2010), a similar argument can be applied to Koolau lavas. However, it

  1. Hard Spheres on the Primitive Surface

    Science.gov (United States)

    Dotera, Tomonari; Takahashi, Yusuke

    2015-03-01

    Recently hierarchical structures associated with the gyroid in several soft-matter systems have been reported. One of fundamental questions is regular arrangement or tiling on minimal surfaces. We have found certain numbers of hard spheres per unit cell on the gyroid surface are entropically self-organized. Here, new results for the primitive surface are presented. 56/64/72 per unit cell on the primitive minimal surface are entropically self-organized. Numerical evidences for the fluid-solid transition as a function of hard sphere radius are obtained in terms of the acceptance ratio of Monte Carlo moves and order parameters. These arrangements, which are the extensions of the hexagonal arrangement on a flat surface, can be viewed as hyperbolic tiling on the Poincaré disk with a negative Gaussian curvature.

  2. Vienna VLBI and Satellite Software (VieVS) for Geodesy and Astrometry

    Science.gov (United States)

    Böhm, Johannes; Böhm, Sigrid; Boisits, Janina; Girdiuk, Anastasiia; Gruber, Jakob; Hellerschmied, Andreas; Krásná, Hana; Landskron, Daniel; Madzak, Matthias; Mayer, David; McCallum, Jamie; McCallum, Lucia; Schartner, Matthias; Teke, Kamil

    2018-04-01

    The Vienna VLBI and Satellite Software (VieVS) is state-of-the-art Very Long Baseline Interferometry (VLBI) analysis software for geodesy and astrometry. VieVS has been developed at Technische Universität Wien (TU Wien) since 2008, where it is used for research purposes and for teaching space geodetic techniques. In the past decade, it has been successfully applied on Very Long Baseline Interferometry (VLBI) observations for the determination of celestial and terrestrial reference frames as well as for the estimation of celestial pole offsets, universal Time (UT1-UTC), and polar motion based on least-squares adjustment. Furthermore, VieVS is equipped with tools for scheduling and simulating VLBI observations to extragalactic radio sources as well as to satellites and spacecraft, features which proved to be very useful for a variety of applications. VieVS is now available as version 3.0 and we do provide the software to all interested persons and institutions. A wiki with more information about VieVS is available at http://vievswiki.geo.tuwien.ac.at/.

  3. Primary primitive neuroectodermal tumor of the orbit

    Directory of Open Access Journals (Sweden)

    Das Dipankar

    2009-01-01

    Full Text Available Primitive neuroectodermal tumor (PNET is a small round cell malignant tumor of neuroectodermal origin. Most of the PNETs occur in the central nervous system (CNS. PNETs recognized outside of CNS are diagnosed as peripheral PNET (pPNET. This tumor which expresses MIC-2 gene (CD99 seems to be least aggressive after complete tumor resection. We describe a rare case of PNET in a young girl.

  4. Accounting for primitive terms in mathematics

    Directory of Open Access Journals (Sweden)

    D.F.M. Strauss

    2005-07-01

    Full Text Available The philosophical problem of unity and diversity entails a challenge to the rationalist aim to define everything. Definitions of this kind surface in various academic disciplines in formulations like uniqueness, irreducibility, and what has acquired the designation “primitive terms”. Not even the most “exact” disciplines, such as mathematics, can avoid the implications entailed in giving an account of such primitive terms. A mere look at the historical development of mathematics highlights the fact that alternative perspectives prevailed – from the arithmeticism of Pythagoreanism, the eventual geometrisation of mathematics after the discovery of incommensurability up to the revival of arithmeticism in the mathematics of Cauchy, Weierstrass, Dedekind and Cantor (with the later orientation of Frege, who completed the circle by returning to the view that mathematics essentially is geometry. An assessment of logicism and axiomatic formalism is followed by looking at the primitive meaning of wholeness (and the whole-parts relation. With reference to the views of Hilbert, Weyl and Bernays the article concludes by suggesting that in opposition to arithmeticism and geometricism an alternative option ought to be pursued – one in which both the uniqueness and mutual coherence between the aspects of number and space are acknowledged.

  5. La vie privée à l’ère du numérique

    OpenAIRE

    Liscouët, Maurice

    2015-01-01

    L’ouvrage commence par une analyse historique de l’émergence des sphères privées et publiques et de la notion de vie privée. Le point de départ pourrait bien être l’apparition en Angleterre du concept d’habeas corpus. Bénédicte Rey retient le terme anglais de privacy pour désigner tout à la fois les notions de vie privée, de données personnelles et de « question du privé ». Elle souligne que la notion de vie privée est une nouvelle valeur humaine fondamentale bien qu’elle ne soit toujours pas...

  6. Microfluidic assay of the deformability of primitive erythroblasts.

    Science.gov (United States)

    Zhou, Sitong; Huang, Yu-Shan; Kingsley, Paul D; Cyr, Kathryn H; Palis, James; Wan, Jiandi

    2017-09-01

    Primitive erythroblasts (precursors of red blood cells) enter vascular circulation during the embryonic period and mature while circulating. As a result, primitive erythroblasts constantly experience significant hemodynamic shear stress. Shear-induced deformation of primitive erythroblasts however, is poorly studied. In this work, we examined the deformability of primitive erythroblasts at physiologically relevant flow conditions in microfluidic channels and identified the regulatory roles of the maturation stage of primitive erythroblasts and cytoskeletal protein 4.1 R in shear-induced cell deformation. The results showed that the maturation stage affected the deformability of primitive erythroblasts significantly and that primitive erythroblasts at later maturational stages exhibited a better deformability due to a matured cytoskeletal structure in the cell membrane.

  7. Resenha de: La vie de la forêt française au XIVè siècle

    Directory of Open Access Journals (Sweden)

    Eurípedes Simões de Paula

    1963-03-01

    Full Text Available DEVÈZE (M.. La vie de Ia forêt française au XIVe siècle. Paris. S. E. V. P. E. N. École Pratique des Hautes Études. Centre de Recharches historiques. VIe section. Coleção "Les hom-mes et la terre". Tomos I e II.

  8. Evaluation de la qualité de vie des personnes vivant avec le VIH à ...

    African Journals Online (AJOL)

    Contexte: Lorsqu'en 2000 le Cameroun fait le choix du traitement par antirétroviraux pour les PVVIH, la qualité de vie (QdV) n'est pas un enjeu de la prise en charge. La chronicisation du sida place aujourd'hui l'évaluation de qualité de vie des PVVIH au sein des défis de santé publique. L'objectif de cette étude était ...

  9. In search of Godard’s ‘Sauve la vie (qui peut’

    Directory of Open Access Journals (Sweden)

    Michael Witt

    2015-04-01

    Full Text Available This article examines a little-known compilation film titled Sauve la vie (qui peut that Jean-Luc Godard created in 1981 within the framework of a series of lectures on cinema history that he delivered in Rotterdam in 1980-1981. To make this compilation film he combined sections from his Sauve qui peut (la vie with extracts from four other films. Based on archival research, the article considers the context for the screening, the film’s structure, Godard’s wider engagement with the filmmakers whose work he incorporated, the prints he used, my attempts to reconstruct the film, and its reception in 1981 and today.

  10. Primitive Endoderm Differentiation: From Specification to Epithelialization.

    Science.gov (United States)

    Bassalert, Cécilia; Valverde-Estrella, Lorena; Chazaud, Claire

    2018-01-01

    At the time of implantation, the mouse blastocyst has developed three cell lineages: the epiblast (Epi), the primitive endoderm (PrE), and the trophectoderm (TE). The PrE and TE are extraembryonic tissues but their interactions with the Epi are critical to sustain embryonic growth, as well as to pattern the embryo. We review here the cellular and molecular events that lead to the production of PrE and Epi lineages and discuss the different hypotheses that are proposed for the induction of these cell types. In the second part, we report the current knowledge about the epithelialization of the PrE. © 2018 Elsevier Inc. All rights reserved.

  11. Primary primitive neuroectodermal tumor of the cervix

    Science.gov (United States)

    Li, Bo; Ouyang, Ling; Han, Xue; Zhou, Yang; Tong, Xin; Zhang, Shulang; Zhang, Qingfu

    2013-01-01

    Primary primitive neuroectodermal tumors (PNETs) are rare and high-grade malignant tumors that mostly occur in children and young adults. The most common sites are the trunk, limbs, and retroperitoneum. Herein, we present a case of a PNET involving the cervix uteri in a 27-year-old woman. The lesion showed characteristic histologic features of a PNET and was positive for the immunohistochemical markers cluster of differentiation (CD) 99, vimentin, neuron-specific enolase, neural cell adhesion molecule 1 (CD56), and CD117 (c-kit), further defining the tumor while helping to confirm PNET. The clinical Stage IIIB tumor was treated with chemotherapy and radiotherapy. PMID:23836982

  12. An Overview of DRAM-Based Security Primitives

    Directory of Open Access Journals (Sweden)

    Nikolaos Athanasios Anagnostopoulos

    2018-03-01

    Full Text Available Recent developments have increased the demand for adequate security solutions, based on primitives that cannot be easily manipulated or altered, such as hardware-based primitives. Security primitives based on Dynamic Random Access Memory (DRAM can provide cost-efficient and practical security solutions, especially for resource-constrained devices, such as hardware used in the Internet of Things (IoT, as DRAMs are an intrinsic part of most contemporary computer systems. In this work, we present a comprehensive overview of the literature regarding DRAM-based security primitives and an extended classification of it, based on a number of different criteria. In particular, first, we demonstrate the way in which DRAMs work and present the characteristics being exploited for the implementation of security primitives. Then, we introduce the primitives that can be implemented using DRAM, namely Physical Unclonable Functions (PUFs and True Random Number Generators (TRNGs, and present the applications of each of the two types of DRAM-based security primitives. We additionally proceed to assess the security such primitives can provide, by discussing potential attacks and defences, as well as the proposed security metrics. Subsequently, we also compare these primitives to other hardware-based security primitives, noting their advantages and shortcomings, and proceed to demonstrate their potential for commercial adoption. Finally, we analyse our classification methodology, by reviewing the criteria employed in our classification and examining their significance.

  13. Réduire la pollution dans les bidonvilles de Jakarta: Haryanti ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    10 déc. 2010 ... Collectivités et administrations locales se concertent pour résoudre les problèmes Chaque année, des dizaines de milliers de migrants, provenant surtout des zones rurales, affluent vers Jakarta en quête de travail et d'une vie meilleure. La plupart se retrouvent dans des bidonvilles tels que Penjaringan, ...

  14. Primitive Accumulation and Temporalities of Capitalism

    Directory of Open Access Journals (Sweden)

    Joanna Bednarek

    2015-04-01

    Full Text Available The main thesis of the article is the statement that capitalism is composed of many different, incoherent temporalities, as well as that apprehension of capitalism from the angle of primitive accumulation enables the more accurate grasp of the modes of its functioning, including the complexity created by the interactions of the temporalities mentionned. The problem of primitive accumulation is, as Sandro Mezzadra proves, a good starting point for analysing this issue. It allows us to pose two questions: first, the question of the relation between the historical dimension and the structural logic of capitalism; second, the question of hierarchical relation between the center and the periphery of the capitalist system.Dipesh Chakrabarty’s project of ‘provincializing Europe’ proves helpful here, as it’s goal is deconstruction of the categories of progress, modernization and the capital with its abstract structure. The aim is not to negate the fact that capitalist abstraction is a real force, but to show that this force develops by means of constant assimiliation of the other – redefined as ‘backward’ or archaic. The linear scheme is in force, because it is the main mechanism of imposing the power of capital; as such, it is not politically neutral.

  15. Les accidents de la vie courante chez l'enfant à Dakar: à propos de ...

    African Journals Online (AJOL)

    Les accidents de la vie courante chez l'enfant à Dakar: à propos de 201 cas. Azhar Salim Mohamed, Aloïse Sagna, Mbaye Fall, Ndeye Aby Ndoye, Papa Alassane Mbaye, Aimé Lakh Fall, Alou Diaby, Oumar Ndour, Gabriel Ngom ...

  16. The Vie Cave Geomorphological Site in Southern Tuscany (Italy: Problems of Decay and Conservation

    Directory of Open Access Journals (Sweden)

    Elena Pecchioni

    2015-06-01

    Full Text Available The Vie Cave are a suggestive network of roads deeply entrenched in the rock, dating back to the Etruscan civilization; these ancient roads connect various settlements and necropolises existing mainly in the area of Sovana, Sorano and Pitigliano towns (Southern Tuscany, Italy. The Vie Cave are located in a peculiar geomorphological site, characterized by the presence of extensive pyroclastic deposits, which have been incised by a parallel network of deep gorges. In this paper, the geomorphological, geological and lithological setting of the Vie Cave area, where several Etruscan archaeological sites are found, are described. The precarious stability of the Vie Cave walls and the several archaeological structures carved into them, the high grade of decay shown by the constituent materials, together with the dense vegetation that has developed over the rocky scarps, are taken into account with the aim to provide a complete assessment of the conditions in which the site lies. Finally, we propose some targeted actions related to the preservation of this territory, showing so distinctive morphology, in order to protect the area from further decay to which it would be subjected if it remained abandoned.

  17. La vie de Jésus-Christ, du Docteur Strauss

    Directory of Open Access Journals (Sweden)

    Edgar Quinet

    2010-12-01

    Full Text Available Edgar Quinet est un de ces fils de la Révolution qui ont peur du vide.Lui qui sera dans le regret que la Révolution française n’ait pas su produire une religion nouvelle, découvre, effaré, les ruines de l’ancienne. Ce n’est pas qu’il crût, mais enfin, comme à ce vicaire savoyard dont il se méfiait, l’Évangile parlait à son cœur de fils de mère calviniste. Il y tenait comme à sa conscience morale. Et voici qu’un répétiteur de philosophie au séminaire protestant de Tübingen (Tubingue, ainsi qu’...

  18. Le télétravail à domicile : Meilleure conciliation emploi-famille ou source d’envahissement de la vie privée ?

    Directory of Open Access Journals (Sweden)

    Catherine Chevrier

    2006-07-01

    Full Text Available Le travail à domicile s’est développé de manière assez importante au cours des dernières années. Certains le présentent comme une manière de mieux concilier les responsabilités parentales et professionnelles, alors que d’autres y voient une source d’empiètements sur la vie personnelle et familiale. Si un certain nombre d’études s’intéressent aux avantages et inconvénients du télétravail ou du travail à domicile de manière générale, peu se sont penchées sur la dimension temporelle et les perceptions des télétravailleurs à cet égard. Pour notre part, nous avons voulu approfondir cette question. Après avoir constaté que le télétravail à domicile progressait de manière importante dans la population canadienne, nous mettons en évidence un paradoxe, à savoir que si le télétravail peut favoriser la conciliation emploi-famille, il est aussi source d’empiètements dans la vie privée et de brouillage des frontières entre vie privée et vie professionnelle.Telework or home work has developed in an important way over the recent decades. Some consider it as a way to better balance professional and personal or family responsibilities, while others see in it a source of disruption in personal and family life. While some research has looked at advantages and disadvantages of telework from a general point of view, few have analysed in detail the temporal dimension, and the perception of teleworkers concerning these potential temporal conflicts. We wanted to look into this issue on the basis of a few detailed case studies, after having observed that Canadian workers are doing a non negligible number of hours of work at home, and highlight the paradox that while telework has often been put forward for work-life or work-family reasons, it may also invade the private sphere and lead to less clearly defined limits between private and professional life.

  19. La mort d’un couple : prière(s et vie publiques Death of a couple: prayer(s and public life

    Directory of Open Access Journals (Sweden)

    Mathieu Touzeil-Divina

    2009-04-01

    Full Text Available Si, avant la Loi du 5 décembre 1905, les Eglises et l’Etat concrétisaient matériellement leurs liens étroits par des rites officiels nommés prières publiques, ceux-ci sont censés avoir été supprimés depuis. C’est l’histoire de cette suppression (après en avoir retenu une définition qui est ici envisagée à travers trois secteurs cardinaux de l’action administrative : la vie universitaire, parlementaire et judiciaire. Dans ces trois hypothèses les prières publiques ont été supprimées de façon différente (respectivement : par désuétude, par une Loi constitutionnelle et par circulaire. On constatera, enfin, l’actualité (troublante de certains de ces rites non exclus totalement de notre vie publique … laïque.If, before the law from December 5, 1905 law, Churches and the State would concretely manifest their close links through official rites called public prayers, these rites are supposed to have since been abolished. This article deals with the history of this abolition – which it first defines – through the study of the three central sectors of the public sector’s activity: university, parliament and judiciary life. In these three hypotheses, prayers have been abolished in various ways (respectively: by obsolescence, by constitutional statute-law and by decree. It will eventually focus on the (disquieting actuality of some of these rites not entirely excluded from our « secular » public life.

  20. Primitive chain network simulations of probe rheology.

    Science.gov (United States)

    Masubuchi, Yuichi; Amamoto, Yoshifumi; Pandey, Ankita; Liu, Cheng-Yang

    2017-09-27

    Probe rheology experiments, in which the dynamics of a small amount of probe chains dissolved in immobile matrix chains is discussed, have been performed for the development of molecular theories for entangled polymer dynamics. Although probe chain dynamics in probe rheology is considered hypothetically as single chain dynamics in fixed tube-shaped confinement, it has not been fully elucidated. For instance, the end-to-end relaxation of probe chains is slower than that for monodisperse melts, unlike the conventional molecular theories. In this study, the viscoelastic and dielectric relaxations of probe chains were calculated by primitive chain network simulations. The simulations semi-quantitatively reproduced the dielectric relaxation, which reflects the effect of constraint release on the end-to-end relaxation. Fair agreement was also obtained for the viscoelastic relaxation time. However, the viscoelastic relaxation intensity was underestimated, possibly due to some flaws in the model for the inter-chain cross-correlations between probe and matrix chains.

  1. Design and Analysis of Symmetric Primitives

    DEFF Research Database (Denmark)

    Lauridsen, Martin Mehl

    . In the second part, we delve into the matter of the various aspects of designing a symmetric cryptographic primitive. We start by considering generalizations of the widely acclaimed Advanced Encryption Standard (AES) block cipher. In particular, our focus is on a component operation in the cipher which permutes...... analyze and implement modes recommended by the National Institute of Standards and Technology (NIST), as well as authenticated encryption modes from the CAESAR competition, when instantiated with the AES. The data processed in our benchmarking has sizes representative to that of typical Internet traffic...... linear cryptanalysis. We apply this model to the standardized block cipher PRESENT. Finally, we present very generic attacks on two authenticated encryption schemes, AVALANCHE and RBS, by pointing out severe design flaws that can be leveraged to fully recover the secret key with very low complexity...

  2. L'astronomie dans le monde - 09/2004

    OpenAIRE

    Manfroid, Jean

    2004-01-01

    Cassini; Distance des Pléiades; Gaz très chaud au centre de notre Galaxie; FUSE; Peser une étoile froide; Masse d'une étoile; Naines brunes; Sursaut gamma dans la Galaxie; Trou noir record; Masse des neutrinos; Un satellite de notre Galaxie; Une jumelle de notre Galaxie; Vie sur Mars?; Rencontre intergalactique; Hawking change d'avis; Pollution lumineuse; Sursauts gamma; Le système solaire, une exception?; Babar et l'antimatière; Spicules; Tau Ceti; Anneau de poussières; Naissance d'une étoil...

  3. Les accidents de la vie courante chez l’enfant à Dakar: à propos de 201 cas

    Science.gov (United States)

    Mohamed, Azhar Salim; Sagna, Aloïse; Fall, Mbaye; Ndoye, Ndeye Aby; Mbaye, Papa Alassane; Fall, Aimé Lakh; Diaby, Alou; Ndour, Oumar; Ngom, Gabriel

    2017-01-01

    Les accidents de la vie courante (AcVC) sont fréquents chez l’enfant et peuvent être à l’origine de lésions handicapantes et de décès. L’objectif de notre travail était d’étudier les aspects épidémiologiques et lésionnels des AcVC à Dakar. C’est une étude transversale descriptive menée du 1er Janvier 2013 au 30 juin 2013. Les enfants victimes d’accidents domestiques, d’accidents de sport et de loisirs ou d’accidents scolaires ont été inclus. Nous avons étudié des paramètres généraux et des paramètres ayant trait à chaque type d’AcVC. Deux cent et un enfants ont été inclus, ce qui représentait 27% des consultations aux urgences. Il y avait 148 garçons et 53 filles. Les enfants de moins de 5 ans étaient les plus touchés (37,8%). Le football et le jeu de lutte étaient les grands pourvoyeurs d’AcVC. Les AcVC survenaient principalement à domicile (58,2%) et dans les aires de sport et de loisirs (31,8%). Les fractures prédominaient dans les différents types d’AcVC: 54,9% des accidents domestiques, 68,8% des accidents de sport et de loisirs et 40% des accidents scolaires. Au plan épidémiologique, nos résultats sont superposables à la littérature. Les fractures prédominent à l’opposé de la littérature où les contusions sont prépondérantes. Le jeu de lutte est le plus grand pourvoyeur de ces fractures après le football. La connaissance des aspects épidémiologiques et lésionnels permet de mener des campagnes de prévention des AcVC à Dakar. PMID:29187941

  4. Action Recognition in Semi-synthetic Images using Motion Primitives

    DEFF Research Database (Denmark)

    Fihl, Preben; Holte, Michael Boelstoft; Moeslund, Thomas B.

    This technical report describes an action recognition approach based on motion primitives. A few characteristic time instances are found in a sequence containing an action and the action is classified from these instances. The characteristic instances are defined solely on the human motion, hence...... motion primitives. The motion primitives are extracted by double difference images and represented by four features. In each frame the primitive, if any, that best explains the observed data is identified. This leads to a discrete recognition problem since a video sequence will be converted into a string...... containing a sequence of symbols, each representing a primitive. After pruning the string a probabilistic Edit Distance classifier is applied to identify which action best describes the pruned string. The method is evaluated on five one-arm gestures. A test is performed with semi-synthetic input data...

  5. Functional Analysis in Public Sector Funkcinė analizė viešajame sektoriuje

    Directory of Open Access Journals (Sweden)

    Živilė Tunčikienė

    2011-02-01

    Full Text Available

    The main aim of the paper is to explore the theoretical aspects of functional analysis on purpose to identify the essence of functional analysis in public sector. This objective was chosen in reference to relevant problem of modern-day, i.e. inefficiency and ineffectiveness of public sector activities. The article contains functional analysis goals, tasks formed by different sources of literature; also, interpretations of the process of functional analysis are introduced. The conclusions were made that the main goal of functional analysis is to suggest an optimal set of functions that have to be performed in order to assure high quality of public services and minimal possible costs throughout all the hierarchical levels of government.

    Keywords: public sector, public administration reform, public institutions, functional analysis, effectiveness.

    Visuomenei itin aktuali per didelių viešojo sektoriaus išlaidų bei nepakankamai kokybiškų viešųjų paslaugų problema. Siekiant mažinti viešojo sektoriaus išlaidas ir kartu gerinti viešųjų paslaugų kokybę, būtina grįsti institucijų veiklos būtinumą ir kartu adekvatumą besikeičiantiems aplinkos reikalavimams. Siekiant išspręsti tokio pobūdžio uždavinius, viešajame sektoriuje vis tvirčiau įsigali tendencija taikyti verslo praktikoje patikrintas ir teigiamai pasitvirtinusias valdymo priemones. Viena svarbiausių i

  6. Un brevet pour la vie : La propriété intellectuelle et ses effets sur le ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Un brevet pour la vie : La propriété intellectuelle et ses effets sur le commerce, la biodiversité et le monde rural. Couverture du livre Un brevet pour la vie : La propriété intellectuelle et ses effets sur. Auteur(s):. The Crucible Group. Maison(s) d'édition: CRDI. 1 janvier 1994. ISBN : Épuisé. 120 pages. e-ISBN : 1552503917.

  7. Life Cycle Assessment Applied to Naphtha Catalytic Reforming Analyse de cycle de vie appliquée au reformage catalytique du naphta

    Directory of Open Access Journals (Sweden)

    Portha J.-F.

    2010-10-01

    Full Text Available Facing the increase of environmental concerns in the oil and gas industry, engineers and scientists need information to assess sustainability of chemical processes. Among the different methods available, Life Cycle Assessment (LCA is widely used. In this study, LCA is applied to a catalytic reforming process using the Eco- Indicator 99 as life cycle impact assessment method. The main identified environmental impacts are fossil fuels consumption, climate change and respiratory effects due to inorganics compounds. The influence of different process parameters (feed composition, reaction temperature is determined with respect to environmental impacts. Two allocation methods are analysed (mass and exergetic allocation and two different process versions are compared in order to determine the effect of some improvements on environmental impact. Les considérations liées à l’environnement doivent de plus en plus être prises en compte par les ingénieurs et les scientifiques afin de juger de la durabilité des procédés chimiques dans l’industrie pétrolière et gazière. Parmi les différentes méthodes d’analyse environnementale, l’Analyse de Cycle de Vie (ACV est très utilisée. Dans cette étude, l’ACV est appliquée au procédé de reformage catalytique du naphta en utilisant la méthode Eco-Indicateur 99 comme méthode d’analyse des impacts du cycle de vie. Les principaux impacts environnementaux du procédé sont la consommation de combustibles fossiles, le changement climatique et les effets sur la respiration liés aux composés organiques. L’influence de différents paramètres (composition de l’alimentation, température de réaction sur les impacts environnementaux est testée. Deux méthodes d’allocation sont analysées (allocation massique et énergétique et deux versions du procédé de reformage catalytique sont comparées afin de déterminer les améliorations possibles permettant de minimiser les impacts.

  8. Le Cosmos d'Alexandre von Humboldt et La Tentation de saint Antoine de Gustave Flaubert : deux œuvres de toute une vie

    Directory of Open Access Journals (Sweden)

    Mary Orr

    2010-12-01

    Full Text Available Dans le septième et dernier tableau de La Tentation de saint Antoine de 1874, la fin célèbre est mise en contexte par une description longue et détaillée qui n’a jamais attiré l’attention critique qu’elle mérite. Cet article analyse l’importance de ce panorama du monde naturel sous la forme d’une exploration intertextuelle des passages du Cosmos d’Alexandre de Humboldt. Que Flaubert signale ses lectures de l’œuvre de Humboldt dans sa Correspondance de 1860 suggère des liens très riches entre Le Cosmos – que Humboldt désigne comme « l’œuvre de ma vie » – et la Tentation de saint Antoine définitive que Flaubert retravaillait au même moment. Cette relecture de La Tentation à travers la perspective de Humboldt souligne la place importante du Cosmos parmi les découvertes et les textes scientifiques contemporains de Flaubert, et la manière dont ceux-ci informent la vision de la vie scientifique et religieuse de son protagoniste, Antoine.In the seventh and final tableau of the Tentation de Saint Antoine of 1874, the famous finale is set in the context of a long, detailed description which has not attracted the critical attention it deserves. This article focuses on the importance of this panorama of the natural world as an intertextual exploration of passages from Kosmos by Alexander von Humboldt. The fact that Flaubert’s Correspondance of 1860 mentions his reading of Humboldt’s works suggests rich lines of investigation between Kosmos – which Humboldt calls the « work of all of life » and the final Tentation de Saint Antoine,which Flaubert was reworking at the same moment. This re-reading of the Tentation through the optic of Humboldt underscores the pivotal position of Kosmos amid the scientific discoveries and texts contemporary to Flaubert, and how these inform the vision of life of his protagonist, Antoine, as scientific and religious.

  9. Cour du prince et vie religieuse à la fin du Moyen Âge

    Directory of Open Access Journals (Sweden)

    Vincent Tabbagh

    2004-12-01

    Full Text Available Il y a quelque paradoxe à vouloir unir ce que tout paraît opposer : la cour n’est-elle pas le lieu même d’une mondanité dont tout le cheminement de la vie religieuse consiste à s’éloigner ? Au XIIe siècle, Jean de Salisbury assimilait celle d’Henri II Plantagenêt à l’Enfer. Comment ce qui est d’abord une manifestation de la puissance seigneuriale et le foyer d’une culture courtoise pourrait-il porter une vie spirituelle spécifique et approfondie ? Cette interrogation animait la demie journée ...

  10. La participation des femmes à la vie politique se traduit par des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    La participation des femmes à la vie politique se traduit par des économies locales plus vigoureuses. 08 juin 2016. Image. Des femmes assistent à une réunion d'un groupe d'entraide près d'. Edgard Rodriguez - IDRC. Des femmes assistent à une réunion d'un groupe d'entraide près d'Hyderabad, en Inde. Keenara ...

  11. Améliorer les conditions de vie des jeunes et des femmes en ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Améliorer les conditions de vie des jeunes et des femmes en développant la petite entreprise : mesure de l'impact. Durant les années 2000, la croissance économique et l'augmentation des investissements sociaux ont réduit la pauvreté et offert aux populations de l'Amérique latine de multiples débouchés sur le marché du ...

  12. spib is required for primitive myeloid development in Xenopus.

    Science.gov (United States)

    Costa, Ricardo M B; Soto, Ximena; Chen, Yaoyao; Zorn, Aaron M; Amaya, Enrique

    2008-09-15

    Vertebrate blood formation occurs in 2 spatially and temporally distinct waves, so-called primitive and definitive hematopoiesis. Although definitive hematopoiesis has been extensively studied, the development of primitive myeloid blood has received far less attention. In Xenopus, primitive myeloid cells originate in the anterior ventral blood islands, the equivalent of the mammalian yolk sac, and migrate out to colonize the embryo. Using fluorescence time-lapse video microscopy, we recorded the migratory behavior of primitive myeloid cells from their birth. We show that these cells are the first blood cells to differentiate in the embryo and that they are efficiently recruited to embryonic wounds, well before the establishment of a functional vasculature. Furthermore, we isolated spib, an ETS transcription factor, specifically expressed in primitive myeloid precursors. Using spib antisense morpholino knockdown experiments, we show that spib is required for myeloid specification, and, in its absence, primitive myeloid cells retain hemangioblast-like characteristics and fail to migrate. Thus, we conclude that spib sits at the top of the known genetic hierarchy that leads to the specification of primitive myeloid cells in amphibians.

  13. Portrait de la compression et de l'expansion de la morbidité au Canada : évolution de l'espérance de vie et de l'espérance de vie ajustée en fonction de la santé, 1994-2010

    Directory of Open Access Journals (Sweden)

    Colin Steensma

    2017-01-01

    Full Text Available Introduction : Notre étude visait à examiner s'il y a eu une expansion ou une compression de la morbidité au Canada, à l'échelle tant nationale que provinciale, en suivant l'évolution de l'espérance de vie (EV et de l'espérance de vie ajustée en fonction de la santé (EVAS entre 1994 et 2010. Une « compression », qui correspond à une diminution de la proportion de la vie marquée par des problèmes de santé, survient lorsque l'EVAS augmente plus rapidement que l'EV. Inversement, une « expansion », qui désigne une augmentation de la proportion de la vie marquée par des problèmes de santé, survient lorsque l'EVAS est stable ou augmente plus lentement que l'EV. Méthodologie : Nous avons estimé l'EV à l'aide des données de Statistique Canada sur la mortalité et sur la population. Nous avons utilisé les données sur la qualité de vie liée à la santé (c.-à-d. morbidité de l'Enquête nationale sur la santé de la population (1994-1999 et de l'Enquête sur la santé dans les collectivités canadiennes (2000-2010 pour calculer l'EVAS. Nous avons établi des tables de mortalité abrégées pour sept intervalles de temps correspondant aux cycles d'enquête disponibles durant la période de 1994 à 2010, ainsi que pour les deux sexes et les dix provinces canadiennes. Les tendances nationales et provinciales ont été examinées à la naissance, à 20 ans et à 65 ans. Résultats : Dans l'ensemble, nous avons constaté une hausse annuelle moyenne statistiquement significative de l'EVAS chez les deux sexes aux trois âges évalués, sauf chez les nouveau-nés de sexe féminin. L'EVAS à la naissance a augmenté en moyenne par année, entre 1994 et 2010, de 0,2 % (p = 0,08 chez les sujets de sexe féminin et de 0,3% (p < 0,001 chez ceux de sexe masculin. À l'échelle nationale, les trois groupes d'âge ont présenté une augmentation annuelle moyenne non statistiquement significative de la proportion de la vie marquée par des

  14. Action Recognition Using Motion Primitives and Probabilistic Edit Distance

    DEFF Research Database (Denmark)

    Fihl, Preben; Holte, Michael Boelstoft; Moeslund, Thomas B.

    2006-01-01

    In this paper we describe a recognition approach based on the notion of primitives. As opposed to recognizing actions based on temporal trajectories or temporal volumes, primitive-based recognition is based on representing a temporal sequence containing an action by only a few characteristic time...... into a string containing a sequence of symbols, each representing a primitives. After pruning the string a probabilistic Edit Distance classifier is applied to identify which action best describes the pruned string. The approach is evaluated on five one-arm gestures and the recognition rate is 91...

  15. Vie et mort des cités du Jawf

    Directory of Open Access Journals (Sweden)

    Jérémie Schiettecatte

    2006-02-01

    Full Text Available Cette communication est une approche archéogéographique des dynamiques de peuplement d’une large vallée du Yémen, le wâdî al‑Jawf. Par l’étude des sources épigraphiques et des données archéologiques, plusieurs sites archéologiques ont été renseignés au sein d’une base de données ; leur poids hiérarchique a été déterminé sur la base de considérations fonctionnelles et ils ont été analysés par le biais d’un système d’information géographique. Cartographier ces sites par période nous permet de mettre en évidence les dynamiques qui affectent le réseau urbain de cette région, prenant en considération le poids hiérarchique de chaque site, leur évolution au sein de l’armature urbaine et leur évolution à long terme.Au regard de ces cartes, d’anciennes considérations sur les causes du déclin de ces villes doivent être relativisées. Jusqu’à présent, des facteurs socio‑historiques étaient utilisés pour expliquer le déclin de ces villes sudarabiques. Mais si ces facteurs doivent être pris en considération, ce n’est que comme la cause directe ayant précipité ce déclin. La cause profonde semble liée à un recul du front de crue qui permettait la mise en culture des périmètres irrigués. En effet, la cartographie nous permet de montrer, dans une perspective dynamique, le déclin et la disparition des villes de l’aval vers l’amont. Ce retrait progressif se justifie d’une part par l’engorgement des systèmes hydrauliques de la vallée, mais également et surtout par le développement des systèmes de retenue d’eau et des terrasses agricoles sur les Hautes‑Terres, bassin versant de la vallée.This paper deals with an archaeological and geographical approach of the settlement process in a large valley of Yemen, the wâdî al‑Jawf. By studying epigraphic sources and archaeological data, several sites were informed within a database; their hierarchical status has been

  16. Live imaging of primitive endoderm precursors in the mouse blastocyst.

    Science.gov (United States)

    Grabarek, Joanna B; Plusa, Berenika

    2012-01-01

    The separation of two populations of cells-primitive endoderm and epiblast-within the inner cell mass (ICM) of the mammalian blastocyst is a crucial event during preimplantation development. However, many aspects of this process are still not very well understood. Recently, the identification of platelet derived growth factor receptor alpha (Pdgfrα) as an early-expressed protein that is also a marker of the later primitive endoderm lineage, together with the availability of the Pdgfra(H2B-GFP) mouse strain (Hamilton et al. Mol Cell Biol 23:4013-4025, 2003), has made in vivo imaging of primitive endoderm formation possible. In this chapter we present two different approaches that can be used to follow the behavior of primitive endoderm cells within the mouse blastocyst in real time.

  17. Primitive polynomials selection method for pseudo-random number generator

    Science.gov (United States)

    Anikin, I. V.; Alnajjar, Kh

    2018-01-01

    In this paper we suggested the method for primitive polynomials selection of special type. This kind of polynomials can be efficiently used as a characteristic polynomials for linear feedback shift registers in pseudo-random number generators. The proposed method consists of two basic steps: finding minimum-cost irreducible polynomials of the desired degree and applying primitivity tests to get the primitive ones. Finally two primitive polynomials, which was found by the proposed method, used in pseudorandom number generator based on fuzzy logic (FRNG) which had been suggested before by the authors. The sequences generated by new version of FRNG have low correlation magnitude, high linear complexity, less power consumption, is more balanced and have better statistical properties.

  18. Motion Primitives and Probabilistic Edit Distance for Action Recognition

    DEFF Research Database (Denmark)

    Fihl, Preben; Holte, Michael Boelstoft; Moeslund, Thomas B.

    2009-01-01

    the actions as a sequence of temporal isolated instances, denoted primitives. These primitives are each defined by four features extracted from motion images. The primitives are recognized in each frame based on a trained classifier resulting in a sequence of primitives. From this sequence we recognize......The number of potential applications has made automatic recognition of human actions a very active research area. Different approaches have been followed based on trajectories through some state space. In this paper we also model an action as a trajectory through a state space, but we represent...... different temporal actions using a probabilistic Edit Distance method. The method is tested on different actions with and without noise and the results show recognition rates of 88.7% and 85.5%, respectively....

  19. Strateginis paslaugų kokybės viešajame sektoriuje valdymas: Klaipėdos regiono aprūpinimo elektros energija atvejis

    OpenAIRE

    Tamošiūnas, Teodoras; Pečiulytė, Sandra

    2010-01-01

    Tyrimo aktualumas ir problematika. Europos šalyse pastebimas viešojo sektoriaus modernizavimas, pritaikant naujausius, pažangiausius vadybos modelius, tarp jų – ir naujosios viešosios vadybos (Židonis, Rudnickas, 2005). Žvelgiant sistemiškai į šiuo metu keičiamus Lietuvos teisės aktus, matyti, kad viešajame sektoriuje rengiama norminė bazė, kuri gali būti tinkamas teisinis pagrindas įgyvendinant naujus viešojo administravimo principus (Vanagas, 2006). Teorinius strateginio kokybės valdymo asp...

  20. Primitive myxoid mesenchymal tumor of infancy in a preterm infant.

    Science.gov (United States)

    Lam, Joseph; Lara-Corrales, Irene; Cammisuli, Salvatore; Somers, Gino R; Pope, Elena

    2010-01-01

    Primitive myxoid mesenchymal tumor of infancy is a recently recognized entity that has been added to the differential diagnosis of myxoid tumors of the soft tissue. Few cases have been reported of this entity in the literature, but none presenting in a preterm infant. We present the case and clinical course of a preterm boy with a primitive myxoid mesenchymal tumor of infancy that occurred following excision of a congenital juvenile xanthogranuloma. © 2010 Wiley Periodicals, Inc.

  1. Peripheral Primitive Neuroectodermal Tumor of the Stomach: A Case Report

    International Nuclear Information System (INIS)

    Park, Woon Ju; Cho, June Sik; Shin, Kyung Sook; Jeong, Hyung Yong; Noh; Seung Moo; Song, Kyu Sang

    2010-01-01

    Peripheral primitive neuroectodermal tumors (peripheral PNETs) are very rare and highly aggressive soft tissue malignancies originating from the neural crest. To the best of our knowledge, only a few cases of peripheral PNETs of the stomach have been reported in the literature. We report a case of large peripheral primitive neuroectodermal tumor of the stomach with MDCT findings in a 22-year-old man presenting epigastric pain and vomiting

  2. La participation sociale des personnes en situation de pauvreté dans un organisme communautaire en milieu urbain

    OpenAIRE

    Desmarquis, Myriam

    2009-01-01

    La recherche porte sur la participation sociale des personnes en situation de pauvreté dans les organismes communautaires. Les constats émanent d'une étude de cas réalisée dans un organisme communautaire qui lutte contre la pauvreté en offrant des services et des activités visant l'amélioration des conditions de vie des participants et des participantes. D'abord, la problématique est abordée sous l'angle des enjeux de la participation sociale liés au contexte de pauvreté. En effet, la pauvret...

  3. Cometary dust: the diversity of primitive refractory grains.

    Science.gov (United States)

    Wooden, D H; Ishii, H A; Zolensky, M E

    2017-07-13

    Comet dust is primitive and shows significant diversity. Our knowledge of the properties of primitive cometary particles has expanded significantly through microscale investigations of cosmic dust samples (anhydrous interplanetary dust particles (IDPs), chondritic porous (CP) IDPs and UltraCarbonaceous Antarctic micrometeorites, Stardust and Rosetta ), as well as through remote sensing ( Spitzer IR spectroscopy). Comet dust are aggregate particles of materials unequilibrated at submicrometre scales. We discuss the properties and processes experienced by primitive matter in comets. Primitive particles exhibit a diverse range of: structure and typology; distribution of constituents; concentration and form of carbonaceous and refractory organic matter; Mg- and Fe-contents of the silicate minerals; sulfides; existence/abundance of type II chondrule fragments; high-temperature calcium-aluminium inclusions and ameboid-olivine aggregates; and rarely occurring Mg-carbonates and magnetite, whose explanation requires aqueous alteration on parent bodies. The properties of refractory materials imply there were disc processes that resulted in different comets having particular selections of primitive materials. The diversity of primitive particles has implications for the diversity of materials in the protoplanetary disc present at the time and in the region where the comets formed.This article is part of the themed issue 'Cometary science after Rosetta'. © 2017 The Authors.

  4. O papel educativo da fotografia de vida selvagem Le rôle educatif de la photographie de la vie sauvage The educacional purpose of wildlife photography

    Directory of Open Access Journals (Sweden)

    Cristina Bruzzo

    2013-03-01

    Full Text Available Este texto examina duas reportagens dos fotógrafos James Balog e Michael Nichols, da revista National Geographic, sobre animais selvagens em zoológicos para questionar o que nos ensinam as denominadas fotografias de animais a respeito do lugar reservado à vida selvagem na cultura contemporânea. Partindo das considerações do filósofo francês Didi-Huberman e de estudos sobre a domesticação, busca-se fornecer subsídios para compreender o propósito educativo da fotografia de animais.Ce texte examine deux reportages des photographes James Balog et Michael Nichols, de la revue National Geographic, sur les animaux sauvages dans des parcs zoologiques pour questionner ce que nous enseigne les dites photographies d′animaux à propos de la place réservée à la vie sauvage dans la culture contemporaine. Partant des considérations du philosophe français Didi-Huberman et d′études sur la domestication, on cherche à apporter des éléments pour comprendre l′objectif éducatif de la photographie d′animaux.The intention of this paper is to examining two articles of National Geographic photographers James Balog and Michael Nichols on wild animals kept in zoos in order to questioning what the so called photographs of wild animals can teach us on wildlife proper space in contemporary culture. Considering French philosopher′s Didi-Huberman assumptions as well as studies on domestication this paper tries to provide information in order to understand the educational purpose of animal photography.

  5. Comet Dust: The Diversity of Primitive Particles and Implications

    Science.gov (United States)

    John Bradley; Zolensky, Michael E.

    2016-01-01

    Comet dust is primitive and shows significant diversity. Our knowledge of the properties of primitive particles has expanded significantly through microscale investigations of cosmic dust samples (IDPs and AMMs) and of comet dust samples (Stardust and Rosetta's COSIMA), as well as through remote sensing (spectroscopy and imaging) via Spitzer and via spacecraft encounters with 103P/Hartley 2 and 67P/Churyumov-Gerasimenko. Microscale investigations show that comet dust and cosmic dust are particles of unequilibrated materials, including aggregates of materials unequilibrated at submicron scales. We call unequilibrated materials "primitive" and we deduce they were incorporated into ice-­-rich (H2O-, CO2-, and CO-ice) parent bodies that remained cold, i.e., into comets, because of the lack of aqueous or thermal alteration since particle aggregation; yet some Stardust olivines suggest mild thermal metamorphism. Primitive particles exhibit a diverse range of: structure and typology; size and size distribution of constituents; concentration and form of carbonaceous and organic matter; D-, N-, and O- isotopic enhancements over solar; Mg-, Fe-contentsof thesilicate minerals; the compositions and concentrations of sulfides, and of less abundant mineral species such as chondrules, CAIs and carbonates. The unifomity within a group of samples points to: aerodynamic sorting of particles and/or particle constituents; the inclusion of a limited range of oxygen fugacities; the inclusion or exclusion of chondrules; a selection of organics. The properites of primitive particles imply there were disk processes that resulted in different comets having particular selections of primitive materials. The diversity of primitive particles has implications for the diversity of materials in the protoplanetary disk present at the time and in the region where the comets formed.

  6. Comet Dust: The Diversity of "Primitive" Particles and Implications

    Science.gov (United States)

    Wooden, Diane H.; Ishii, Hope A.; Bradley, John P.; Zolensky, Michael E.

    2016-01-01

    Comet dust is primitive and shows significant diversity. Our knowledge of the properties of primitive particles has expanded significantly through microscale investigations of cosmic dust samples ( IDP's(Interplanetary Dust Particles) and AMM's (Antarctic Micrometeorites)) and of comet dust samples (Stardust and Rosetta's COSIMA), as well as through remote sensing (spectroscopy and imaging) via Spitzer and via spacecraft encounters with 103P/Hartley 2 and 67P/Churyumov-Gerasimenko. Microscale investigations show that comet dust and cosmic dust are particles of unequilibrated materials, including aggregates of materials unequilibrated at submicron scales. We call unequilibrated materials "primitive" and we deduce they were incorporated into ice-rich (H2O-, CO2-, and CO-ice) parent bodies that remained cold, i.e., into comets, because of the lack of aqueous or thermal alteration since particle aggregation; yet some Stardust olivines suggest mild thermal metamorphism. Primitive particles exhibit a diverse range of: structure and typology; size and size distribution of constituents; concentration and form of carbonaceous and organic matter; D-, N-, and O- isotopic enhancements over solar; Mg-, Fe-contents of the silicate minerals; the compositions and concentrations of sulfides, and of less abundant mineral species such as chondrules, CAIs and carbonates. The uniformity within a group of samples points to: aerodynamic sorting of particles and/or particle constituents; the inclusion of a limited range of oxygen fugacities; the inclusion or exclusion of chondrules; a selection of organics. The properties of primitive particles imply there were disk processes that resulted in different comets having particular selections of primitive materials. The diversity of primitive particles has implications for the diversity of materials in the protoplanetary disk present at the time and in the region where the comets formed.

  7. Le mythe du microcèbe primitif The myth of the primitive mouse lemur

    Directory of Open Access Journals (Sweden)

    Fabien Génin

    2011-10-01

    Full Text Available Les microcèbes (genre Microcebus, famille Cheirogaleidés sont de très petits lémuriens nocturnes endémiques de Madagascar, souvent vus comme les plus archaïques de tous les primates. Dans cette contribution, nous critiquons cette vue, véritable mythe des origines, qui n’est supportée ni par le registre fossile ni par les phylogénies les plus récentes. Nous proposons l’alternative d’une réduction de taille corporelle ou nanisme, un phénomène particulièrement fréquent sur les îles et dans les régions géographiquement isolées et soumises à des sécheresses imprévisibles provoquées par le phénomène El Niño. Nous confirmons le modèle de progénèse de Gould, qui explique le nanisme par des conditions hypervariables entrainant une accélération de l’histoire de vie. Les Cheirogaleidés apparaissent comme des nains paedomorphes comparés à leur groupe frère les Lépilémuridés (Lepilemur. Ils ont probablement subi au moins 3 évènements indépendants de nanisme, qui ont conduit à des changements parallèles des proportions de la tête et des membres (allométrie. Le premier (nanisme a conduit à une diminution de la taille du corps et des membres, sans changement significatif de la forme du crâne (à l’exception des dents chez les plus grandes formes de Cheirogaleidés (Phaner, Mirza, et les grandes formes du genre Cheirogaleus. Le second (hyper-nanisme a conduit à des changements parallèles de la forme du crâne chez les plus petites formes (Allocebus, Microcebus et les petites formes du genre Cheirogaleus, associés à des traits paedomorphiques typiques (grands yeux et petit museau pointu. Cette nouvelle hypothèse explique de nombreuses caractéristiques uniques de ce groupe de lémuriens, en particulier leurs histoires de vie rapides.Mouse lemurs (genus Microcebus, family Cheirogaleidae are small, nocturnal lemurs endemic to Madagascar, often viewed as the most archaic primates. In this contribution, we

  8. Eutectic propeties of primitive Earth's magma ocean

    Science.gov (United States)

    Lo Nigro, G.; Andrault, D.; Bolfan-Casanova, N.; Perillat, J.-P.

    2009-04-01

    It is widely accepted that the early Earth was partially molten (if not completely) due to the high energy dissipated by terrestrial accretion [1]. After core formation, subsequent cooling of the magma ocean has led to fractional crystallization of the primitive mantle. The residual liquid corresponds to what is now called the fertile mantle or pyrolite. Melting relations of silicates have been extensively investigated using the multi-anvil press, for pressures between 3 and 25 GPa [2,3]. Using the quench technique, it has been shown that the pressure affects significantly the solidus and liquidus curves, and most probably the composition of the eutectic liquid. At higher pressures, up to 65 GPa, melting studies were performed on pyrolite starting material using the laser-heated diamond anvil cell (LH-DAC) technique [4]. However, the quench technique is not ideal to define melting criteria, and furthermore these studies were limited in pressure range of investigation. Finally, the use of pyrolite may not be relevant to study the melting eutectic temperature. At the core-mantle boundary conditions, melting temperature is documented by a single data point on (Mg,Fe)2SiO4 olivine, provided by shock wave experiments at around 130-140 GPa [5]. These previous results present large uncertainties of ~1000 K. The aim of this study is to determine the eutectic melting temperature in the chemically simplified system composed of the two major lower mantle phases, the MgSiO3 perovskite and MgO periclase. We investigated melting in-situ using the laser-heated diamond anvil cell coupled with angle dispersive X-ray diffraction at the ID27 beamline of the ESRF [6]. Melting relations were investigated in an extended P-T range comparable to those found in the Earth's lower mantle, i.e. from 25 to 120 GPa and up to more than 5000 K. Melting was evidenced from (a) disappearance of one of the two phases in the diffraction pattern, (b) drastic changes of the diffraction image itself, and

  9. The first trimester human placenta is a site for terminal maturation of primitive erythroid cells

    OpenAIRE

    Van Handel, Ben; Prashad, Sacha L.; Hassanzadeh-Kiabi, Nargess; Huang, Andy; Magnusson, Mattias; Atanassova, Boriana; Chen, Angela; Hamalainen, Eija I.; Mikkola, Hanna K. A.

    2010-01-01

    Embryonic hematopoiesis starts via the generation of primitive red blood cells (RBCs) that satisfy the embryo's immediate oxygen needs. Although primitive RBCs were thought to retain their nuclei, recent studies have shown that primitive RBCs in mice enucleate in the fetal liver. It has been unknown whether human primitive RBCs enucleate, and what hematopoietic site might support this process. Our data indicate that the terminal maturation and enucleation of human primitive RBCs occurs in fir...

  10. Globfit: Consistently fitting primitives by discovering global relations

    KAUST Repository

    Li, Yangyan; Wu, Xiaokun; Chrysathou, Yiorgos; Sharf, Andrei Sharf; Cohen-Or, Daniel; Mitra, Niloy J.

    2011-01-01

    Given a noisy and incomplete point set, we introduce a method that simultaneously recovers a set of locally fitted primitives along with their global mutual relations. We operate under the assumption that the data corresponds to a man-made engineering object consisting of basic primitives, possibly repeated and globally aligned under common relations. We introduce an algorithm to directly couple the local and global aspects of the problem. The local fit of the model is determined by how well the inferred model agrees to the observed data, while the global relations are iteratively learned and enforced through a constrained optimization. Starting with a set of initial RANSAC based locally fitted primitives, relations across the primitives such as orientation, placement, and equality are progressively learned and conformed to. In each stage, a set of feasible relations are extracted among the candidate relations, and then aligned to, while best fitting to the input data. The global coupling corrects the primitives obtained in the local RANSAC stage, and brings them to precise global alignment. We test the robustness of our algorithm on a range of synthesized and scanned data, with varying amounts of noise, outliers, and non-uniform sampling, and validate the results against ground truth, where available. © 2011 ACM.

  11. Globfit: Consistently fitting primitives by discovering global relations

    KAUST Repository

    Li, Yangyan

    2011-07-01

    Given a noisy and incomplete point set, we introduce a method that simultaneously recovers a set of locally fitted primitives along with their global mutual relations. We operate under the assumption that the data corresponds to a man-made engineering object consisting of basic primitives, possibly repeated and globally aligned under common relations. We introduce an algorithm to directly couple the local and global aspects of the problem. The local fit of the model is determined by how well the inferred model agrees to the observed data, while the global relations are iteratively learned and enforced through a constrained optimization. Starting with a set of initial RANSAC based locally fitted primitives, relations across the primitives such as orientation, placement, and equality are progressively learned and conformed to. In each stage, a set of feasible relations are extracted among the candidate relations, and then aligned to, while best fitting to the input data. The global coupling corrects the primitives obtained in the local RANSAC stage, and brings them to precise global alignment. We test the robustness of our algorithm on a range of synthesized and scanned data, with varying amounts of noise, outliers, and non-uniform sampling, and validate the results against ground truth, where available. © 2011 ACM.

  12. C'est La Vie! The Game of Social Life: Using an Intersectionality Approach to Teach About Privilege and Structural Inequality

    Science.gov (United States)

    Bramesfeld, Kosha D.; Good, Arla

    2016-01-01

    In this article, we present the results of two studies that evaluated an experiential intersectionality awareness activity, "C'est La Vie: The Game of Social Life." For Study 1 (N = 55), we content analyzed students' short answer responses about inequality written before and after playing "C'est La Vie." Study 2 compared a…

  13. Naratīvie elementi kiberpanka literatūrā

    OpenAIRE

    Beņko, Oļegs

    2011-01-01

    Darba tēma ir „Naratīvie elementi kiberpanka literatūrā”. Naratīvie elementi veido stāstu. Dažādiem žanriem ir raksturīgi atšķirīgi elementi. Līdz ar to, saskaroties ar noteiktu naratīvo elementu – darbības vidi, tēlu vai sižetu, kas attīstās ap kādu tēmu, – varam identificēt arī žanru. Darba mērķis ir noskaidrot kopējos kiberpanka literatūrai raksturīgos naratīvos elementus. Lai īstenotu šo mērķi, tiek analizēti un salīdzināti divi kibepanka žanrā tapuši darbi – Viljama Gibsona „Neirom...

  14. VieSLAF Framework: Enabling Adaptive and Versatile SLA-Management

    Science.gov (United States)

    Brandic, Ivona; Music, Dejan; Leitner, Philipp; Dustdar, Schahram

    Novel computing paradigms like Grid and Cloud computing demand guarantees on non-functional requirements such as application execution time or price. Such requirements are usually negotiated following a specific Quality of Service (QoS) model and are expressed using Service Level Agreements (SLAs). Currently available QoS models assume either that service provider and consumer have matching SLA templates and common understanding of the negotiated terms or provide public templates, which can be downloaded and utilized by the end users. On the one hand, matching SLA templates represent an unrealistic assumption in systems where service consumer and provider meet dynamically and on demand. On the other hand, handling of public templates seems to be a rather challenging issue, especially if the templates do not reflect users’ needs. In this paper we present VieSLAF, a novel framework for the specification and management of SLA mappings. Using VieSLAF users may specify, manage, and apply SLA mapping bridging the gap between non-matching SLA templates. Moreover, based on the predefined learning functions and considering accumulated SLA mappings, domain specific public SLA templates can be derived reflecting users’ needs.

  15. Nucleation and condensation in the primitive solar nebula

    International Nuclear Information System (INIS)

    Cameron, A.G.W.; Fegley, M.B.

    1982-01-01

    It is pointed out that the primitive solar nebula may be modeled using the frictionally induced transport theory of Lynden-Bell and Pringle (1974) if the principal frictional mechanism within the nebula is turbulent viscosity. The present investigation is concerned with the construction of a model of a section of the primitive solar nebula as a basis for the study of nucleation and condensation processes within this section. The construction involves a relatively simple application of the Lynden-Bell and Pringle theory subject to steady mass flow conditions. The calculations which are conducted in connection with the investigation indicate that by the time the gas in the primitive solar nebula has become sufficiently supercooled to nucleate condensation centers, several different compounds, including the magnesium silicates forsterite and enstatite (MgSiO 3 ), will probably be able to condense on the growing condensation center

  16. Primitive neuroectodermal tumor of the cervix: a case report

    Directory of Open Access Journals (Sweden)

    Boroujeni Parisa

    2011-09-01

    Full Text Available Abstract Introduction Peripheral primitive neuroectodermal tumor of the cervix uteri is extremely rare. Between 1987 and 2010, there were only nine cases reported in the English literature, with considerably different management policies. Case presentation A 45-year-old Iranian woman presented to our facility with a primitive neuroectodermal tumor of the cervix uteri. Her clinical stage IB2 tumor was treated successfully with chemotherapy. Our patient underwent radical hysterectomy. There was no trace of the tumor after four years of follow-up. Conclusions According to current knowledge, primitive neuroectodermal tumors belong to the Ewing's sarcoma family, and the improvement of treatment outcome in our patient was due to dose-intensive neoadjuvant chemotherapy, surgery and consolidation chemotherapy in accordance with the protocol for bony Ewing's sarcoma.

  17. Panorama des pensions 2011 les systèmes de retraites dans les pays de l'OCDE et du G20

    CERN Document Server

    Organisation for Economic Cooperation and Development. Paris

    2011-01-01

    Cette quatrième édition des Pensions dans les pays de l’OCDE est consacrée aux pensions, aux départs en retraite et à l’espérance de vie. De nombreux pays ont relevé l’âge de la retraite pour répondre au vieillissement de la population et à l’allongement de la vie. Certains ont introduit un mécanisme d’indexation automatique des pensions sur l’espérance de vie. De plus, l’amélioration des dispositifs incitant les actifs à rester en activité au lieu de faire valoir leurs droits à retraite est commune à bien des programmes de réforme récemment mis en place dans ce domaine. Néanmoins, s’assurer que les emplois disponibles pour les plus âgés sont en nombre suffisant tient encore de la gageure. Les grandes problématiques des politiques conduites de nos jours en matière de retraite sont analysées de près dans cinq chapitres thématiques portant sur les aspects suivants : âge de la retraite, comportement vis-à-vis de la retraite, incitations au départ induites par le syst...

  18. POÉSIE ET RELIGION, LEURS RAPPORTS ET LEURS PARTICULARITÉS DANS LA VIE DE L’HOMME

    Directory of Open Access Journals (Sweden)

    Fabiola KADI

    2014-05-01

    Full Text Available This paper aims to study the permanent connection that exists between literature and especially poetry, and the sacred. It is a delicate issue which deserves to be treated anyway, due to this stable coexistence even though has been objected over the centuries. We think that this relationship should not be left in limbo, because poets of all times have been inspired by the sacred as any other topic. It is time to leave behind the prejudices that characterize our modern era in terms of poetry with religious themes, and to highlight its incontestable aesthetic values.

  19. Protection de la vie privée dans l'univers numérique des pays en ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Visionnement du film Little Gandhi —The Lost Truth of the Syrian Uprising à New York. La mission du Canada auprès des Nations Unies projettera des extraits du film Little Gandhi, un documentaire sur la Syrie subventionné par le CDRI. Voir davantageVisionnement du film Little Gandhi —The Lost Truth of the Syrian ...

  20. Protection de la vie privée dans un monde numérique en Asie ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    utilisateurs d'Internet et des technologies mobiles. ... The exponential growth of data storage capability coupled with the rise of social media and Internet business applications means that companies and governments now have the ability to ...

  1. Protection de la vie privée dans un monde numérique en Asie ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    9 juin 2016 ... Solar dryers are improving livelihoods in Bhutan. Des séchoirs à fruits et à légumes fonctionnant à l'énergie solaire aident les résidents de villages reculés du sud‑est du Bhoutan à accroître leur. Voir davantageSolar dryers are improving livelihoods in Bhutan · Ce que nous faisons · Financement ...

  2. Context of culture: Critique of the primitive mind

    Directory of Open Access Journals (Sweden)

    Božilović Nikola

    2010-01-01

    Full Text Available The author of this paper has the intention to reach the new meaning and sense of the primitive mentality by analyzing it in early social communities. He also wants to point out the possible reflections of the spirit and consciousness of our ancestors on us, here and now. The first part of the paper is dedicated to a critical deliberation on anthropological conflicts which have arisen concerning the reasoning power of the so-called primitives. The crucial question lies in the following: Is the difference between the “primitive” and the “civilized” mentality fundamental or is it possible only to a certain degree. The author takes the notion of primitive mentality through time and points to the medieval understandings, which are occupied by teratological themes, then to the renaissance comprehension, which relies on the first experiential observations, and, finally, to the enlightenment ideas of exotic peoples out of which the myth of “the good savage” is born. The nineteenth and twentieth centuries introduce the notions of “people’s character” and “national spirit”. The opinions are polarized, on the one hand of ethnocentrism, carried by the prejudice of people and ethnic groups and, on the other hand, of cultural relativism, based on the understanding and appreciation of cultural differences. In the end, the author also recognizes the modern primitive man, one who is not ready to deal with the challenges of his age. The modern primitive recalls the spirits of the past, the surviving and anachronic models of behavior, unaware of the fact that these are the same models that he has ascribed to “savages”. However, while such thinking and acting was justified by the cultural level at which our ancestors had lived, the mental frame of the contemporary primitives is significantly in contrast with the high level of civilization development.

  3. The Syntax of Time and Space Primitives in French.

    Science.gov (United States)

    Peeters, Bert

    1997-01-01

    Explores the combinatorial possibilities of semantic primitives of time and space in French, as defined in the theory of Natural Semantic Metalanguage. Highlights the need for new ways to express the allolexical relationship in some combinations, particularly those expressing "when/time." (Author/MSE)

  4. Primitive neuroectodermal tumour of the kidney: radiologic-pathological correlations.

    Science.gov (United States)

    Chea, Y W; Agrawal, Rashi; Poh, Angeline C C

    2008-06-01

    A primitive neuroectodermal tumour of the kidney is a rare malignancy. We report the computed tomographic features and the histopathological correlation of such a tumour occurring in a middle-aged man. Although the radiological appearance has significant overlap with other renal tumours, this tumour should be included in the differential diagnosis of a large renal mass in younger patients.

  5. Letters of Gold: Enabling Primitive Accumulation through Neoliberal Conservation

    NARCIS (Netherlands)

    B.E. Büscher (Bram)

    2009-01-01

    textabstractAbstract: In Capital I, Marx wrote that the history of the separation of the producers from the means of production “is written in the annals of mankind in letters of blood and fire” (Marx, 1976: 875). This ‘so-called primitive accumulation’, or ‘accumulation by dispossession’ in David

  6. Addressing Nature Deficit Disorder through Primitive Camping Experiences

    Science.gov (United States)

    Allen, Kevin; Varner, Keegan; Sallee, Jeff

    2011-01-01

    Today's youth suffer from Nature Deficit Disorder, a condition that has been connected to ADHD, shortage of creativity, and general lack of knowledge about the outdoors. A team of educators and specialists are addressing this issue with primitive camping. County educators were trained using experiential learning and train-the-trainer techniques.…

  7. Understanding and determining the variability of the primitive stress environment.

    CSIR Research Space (South Africa)

    Sellers, EJ

    2002-10-01

    Full Text Available The primitive stress state is an important input into the design of underground excavations. However, it is well known that the stress state varies considerably from place to place. The aim of this project was to determine the main causes...

  8. COMPARATIVE STUDY OF RTOS AND PRIMITIVE INTERRUPT IN EMBEDDED SYSTEM

    Directory of Open Access Journals (Sweden)

    Dwi Purnomo

    2015-03-01

    Full Text Available Multitasking is one of the most challenging issues in the automation industry which is highly depended on the embedded system. There are two methods to perform multitasking in embedded system: RTOS and primitive interrupt. The main purpose of this research is to compare the performance of R¬TOS with primitive method while concurrently undertaking multiple tasks. The system, which is able to perform various tasks, has been built to evaluate the performance of both methods. There are four tasks introduced in the system: servo task, sensor task, LED task, and LCD task. The performance of each method is indicated by the success rate of the sensor task detection. Sensor task detection will be compared with the true value which is calculated and measured manually during observation time. Observation time was varied after several iterations and the data of the iteration are recorded for both RTOS and primitive interrupt methods. The results of the conducted experiments have shown that, RTOS is more accurate than interrupt method. However, the data variance of the primitive interrupt method is narrower than RTOS. Therefore, to choose a better method, an optimization is needed to be done and each product has its own standard.

  9. A Test of Durkheim's Theory of Suicide in Primitive Societies.

    Science.gov (United States)

    Lester, David

    1992-01-01

    Classified primitive societies as high, moderate, or low on independent measures of social integration and social regulation to test Durkheim's theory of suicide. Estimated frequency of suicide did not differ between those societies predicted to have high, moderate, and low suicide rates. Durkheim's theory was not confirmed. (Author/NB)

  10. Primary extraskeletal Ewing's sarcoma/primitive neuroectodermal tumor of breast

    Directory of Open Access Journals (Sweden)

    Smita Srivastava

    2016-01-01

    Full Text Available Extraskeletal Ewing's sarcoma (EES is a rare soft tissue tumor that is morphologically indistinguishable from skeletal ES. We report a case of a 25-year-old female with recurrent EES/primitive neuroectodermal tumor of right breast with imaging findings on mammogram, ultrasound, magnetic resonance imaging breast, and positron emission tomography–computed tomography.

  11. Cancer of unknown primitive metastatic. About two clinical cases

    International Nuclear Information System (INIS)

    Cawen, L; Cordoba, A.

    2010-01-01

    This work is about the two clinical cases about the unknown primitive metastatic cancer. The main techniques used for the diagnosis, treatment and monitoring of different s carcinomas are: Electronic microscope, molecular biology and genetics, especially histopathological study, topographic survey, ultrasound, radiography, chemotherapy, radiotherapy

  12. VIE-FG-FFT for Analyzing EM Scattering from Inhomogeneous Nonmagnetic Dielectric Objects

    Directory of Open Access Journals (Sweden)

    Shu-Wen Chen

    2014-01-01

    Full Text Available A new realization of the volume integral equation (VIE in combination with the fast Fourier transform (FFT is established by fitting Green’s function (FG onto the nodes of a uniform Cartesian grid for analyzing EM scattering from inhomogeneous nonmagnetic dielectric objects. The accuracy of the proposed method is the same as that of the P-FFT and higher than that of the AIM and the IE-FFT especially when increasing the grid spacing size. Besides, the preprocessing time of the proposed method is obviously less than that of the P-FFT for inhomogeneous nonmagnetic dielectric objects. Numerical examples are provided to demonstrate the accuracy and efficiency of the proposed method.

  13. Viedās tehnoloģijas ikdienas dzīvē

    OpenAIRE

    Sakss, Imants

    2010-01-01

    Autors darbā dod ieskatu viedo tehnoloģiju izmantošanu ēku un māju automatizācijas sistēmās, to protokolus un kontroles principus. Plašais apskats ļauj izprast galvenajās vadlīnijās par automatizācijas sistēmu pielietošanu aktīvas komercdarbības procesos. Lietojot vizuālo materiālu un pārskatu ir vieglāk izvēlēties atbilstošos protokolus, lai izveidotu automatizācijas kontroles sistēmu. Darbs ļauj izprast, ko nozīme viedās tehnoloģijas ikdienas dzīvē. Tiek apskatītas automatizācijas sistēmas ...

  14. Freedom in the time of oppression in L. Gutauskas’ novels “Letters from Viešvilė” and “The Feathers”

    OpenAIRE

    Bernotienė, Gintarė

    2011-01-01

    In the novels "Laiškai iš Viešvilės" ("Letters from Viešvilė") and "Plunksnos" ("The feathers") Leonardas Gutauskas considers themes of freedom and artistic creation, which in certain political situation are closely related to the problem of individual freedom and restriction of liberty in the annexed country as well. According to the metaphor of the novel "Laiškai iš Viešvilės", in the time of oppression characters live their lives as bounded by wire mesh, and despite of that freedom in this...

  15. Primitive neuroectodermal tumor of the orbit in a 5-year-old girl with microphthalmia

    DEFF Research Database (Denmark)

    Alyahya, Ghassan Ayish Jabur; Heegaard, Steffen; Fledelius, Hans C.

    2000-01-01

    ophthalmology, primitive neuroectodermal tumor (PNET), Ewing's sarcoma, small round-cell tumors, retinoblastoma, medulloepithelioma, microphthalmia, orbitotomy......ophthalmology, primitive neuroectodermal tumor (PNET), Ewing's sarcoma, small round-cell tumors, retinoblastoma, medulloepithelioma, microphthalmia, orbitotomy...

  16. A requirement for FGF signalling in the formation of primitive streak-like intermediates from primitive ectoderm in culture.

    Directory of Open Access Journals (Sweden)

    Zhiqiang Zheng

    Full Text Available BACKGROUND: Embryonic stem (ES cells hold considerable promise as a source of cells with therapeutic potential, including cells that can be used for drug screening and in cell replacement therapies. Differentiation of ES cells into the somatic lineages is a regulated process; before the promise of these cells can be realised robust and rational methods for directing differentiation into normal, functional and safe cells need to be developed. Previous in vivo studies have implicated fibroblast growth factor (FGF signalling in lineage specification from pluripotent cells. Although FGF signalling has been suggested as essential for specification of mesoderm and endoderm in vivo and in culture, the exact role of this pathway remains unclear. METHODOLOGY/PRINCIPAL FINDINGS: Using a culture model based on early primitive ectoderm-like (EPL cells we have investigated the role of FGF signalling in the specification of mesoderm. We were unable to demonstrate any mesoderm inductive capability associated with FGF1, 4 or 8 signalling, even when the factors were present at high concentrations, nor any enhancement in mesoderm formation induced by exogenous BMP4. Furthermore, there was no evidence of alteration of mesoderm sub-type formed with addition of FGF1, 4 or 8. Inhibition of endogenous FGF signalling, however, prevented mesoderm and favoured neural differentiation, suggesting FGF signalling was required but not sufficient for the differentiation of primitive ectoderm into primitive streak-like intermediates. The maintenance of ES cell/early epiblast pluripotent marker expression was also observed in cultures when FGF signalling was inhibited. CONCLUSIONS/SIGNIFICANCE: FGF signalling has been shown to be required for the differentiation of primitive ectoderm to neurectoderm. This, coupled with our observations, suggest FGF signalling is required for differentiation of the primitive ectoderm into the germ lineages at gastrulation.

  17. Indoor objects and outdoor urban scenes recognition by 3D visual primitives

    DEFF Research Database (Denmark)

    Fu, Junsheng; Kämäräinen, Joni-Kristian; Buch, Anders Glent

    2014-01-01

    , we propose an alternative appearance-driven approach which rst extracts 2D primitives justi ed by Marr's primal sketch, which are \\accumulated" over multiple views and the most stable ones are \\promoted" to 3D visual primitives. The 3D promoted primitives represent both structure and appearance...

  18. High water content in primitive continental flood basalts.

    Science.gov (United States)

    Xia, Qun-Ke; Bi, Yao; Li, Pei; Tian, Wei; Wei, Xun; Chen, Han-Lin

    2016-05-04

    As the main constituent of large igneous provinces, the generation of continental flood basalts (CFB) that are characterized by huge eruption volume (>10(5) km(3)) within short time span (primitive CFB in the early Permian Tarim large igneous province (NW China), using the H2O content of ten early-formed clinopyroxene (cpx) crystals that recorded the composition of the primitive Tarim basaltic melts and the partition coefficient of H2O between cpx and basaltic melt. The arc-like H2O content (4.82 ± 1.00 wt.%) provides the first clear evidence that H2O plays an important role in the generation of CFB.

  19. Primitive Path Analysis and Stress Distribution in Highly Strained Macromolecules.

    Science.gov (United States)

    Hsu, Hsiao-Ping; Kremer, Kurt

    2018-01-16

    Polymer material properties are strongly affected by entanglement effects. For long polymer chains and composite materials, they are expected to be at the origin of many technically important phenomena, such as shear thinning or the Mullins effect, which microscopically can be related to topological constraints between chains. Starting from fully equilibrated highly entangled polymer melts, we investigate the effect of isochoric elongation on the entanglement structure and force distribution of such systems. Theoretically, the related viscoelastic response usually is discussed in terms of the tube model. We relate stress relaxation in the linear and nonlinear viscoelastic regimes to a primitive path analysis (PPA) and show that tension forces both along the original paths and along primitive paths, that is, the backbone of the tube, in the stretching direction correspond to each other. Unlike homogeneous relaxation along the chain contour, the PPA reveals a so far not observed long-lived clustering of topological constraints along the chains in the deformed state.

  20. Formalizing the Relationship Between Commitment and Basic Cryptographic Primitives

    Directory of Open Access Journals (Sweden)

    S. Sree Vivek

    2016-11-01

    Full Text Available Signcryption is a cryptographic primitive which offers the functionality of both digital signature and encryption with lower combined computational cost. On the other hand, commitment scheme allows an entity to commit to a value, where the entity reveals the committed value later during a decommit phase. In this paper, we explore the connection between commitment schemes, public key encryption, digital signatures and signcryption. We establish formal relationship between commitment and the other primitives. Our main result is that we show signcryption can be used as a commitment scheme with appropriate security notions. We show that if the underlying signcryption scheme is IND-CCA2 secure, then the hiding property of the commitment scheme is satisfied. Similarly, we show that if the underlying signcryption scheme is unforgeable, then the relaxed biding property of the commitment scheme is satisfied. Moreover, we prove that if the underlying signcryption scheme is NM-CCA2, then the commitment scheme is non-malleable.

  1. Search for Primitive Matter in the Solar System

    Science.gov (United States)

    Libourel, G.; Michel, P.; Delbo, M.; Ganino, C.; Recio-Blanco, A.; de Laverny, P.; Zolensky, M. E.; Krot, A. N.

    2017-01-01

    Recent astronomical observations and theoretical modeling led to a consensus regarding the global scenario of the formation of young stellar objects (YSO) from a cold molecular cloud of interstellar dust (organics and minerals) and gas that, in some cases, leads to the formation of a planetary system. In the case of our Solar System, which has already evolved for approximately 4567 Ma, the quest is to access, through the investigation of planets, moons, cometary and asteroidal bodies, meteorites, micrometeorites, and interplanetary dust particles, the primitive material that contains the key information about the early Solar System processes and its evolution. However, laboratory analyses of extraterrestrial samples, astronomical observations and dynamical models of the Solar System evolution have not brought yet any conclusive evidence on the nature and location of primitive matter in the Solar System, preventing a clear understanding of its early stages.

  2. Morphological Study of Insoluble Organic Matter Residues from Primitive

    Science.gov (United States)

    Changela, H. G.; Stroud, R. M.; Peeters, Z.; Nittler, L. R.; Alexander, C. M. O'D.; DeGregorio, B. T.; Cody, G. D.

    2012-01-01

    Insoluble organic matter (IOM) constitutes a major proportion, 70-99%, of the total organic carbon found in primitive chondrites [1, 2]. One characteristic morphological component of IOM is nanoglobules [3, 4]. Some nanoglobules exhibit large N-15 and D enrichments relative to solar values, indicating that they likely originated in the ISM or the outskirts of the protoplanetary disk [3]. A recent study of samples from the Tagish Lake meteorite with varying levels of hydrothermal alteration suggest that nanoglobule abundance decreases with increasing hydrothermal alteration [5]. The aim of this study is to further document the morphologies of IOM from a range of primitive chondrites in order to determine any correlation of morphology with petrographic grade and chondrite class that could constrain the formation and/or alteration mechanisms.

  3. Primary intraspinal extradural primitive neuroectodermal tumor: A rare case.

    Science.gov (United States)

    Rege, Shrikant V; Tadghare, Jitendra; Patil, Harshad; Narayan, Sharadendu

    2016-01-01

    Primitive neuroectodermal tumors (PNETs) are aggressive childhood malignancies and are difficult to treat. Primary intraspinal PNETs are rare. These patients have poor prognosis with short survival time even after surgery and chemoradiation. As there are no standard guidelines exist for the management of these tumors, a multidisciplinary approach has been employed with varying success. According to the review of literature, only few cases of primary intraspinal extradural PNETs have been reported. Herein, author has described a case of intraspinal, extradural PNET.

  4. Transitions between discrete and rhythmic primitives in a unimanual task

    Science.gov (United States)

    Sternad, Dagmar; Marino, Hamal; Charles, Steven K.; Duarte, Marcos; Dipietro, Laura; Hogan, Neville

    2013-01-01

    Given the vast complexity of human actions and interactions with objects, we proposed that control of sensorimotor behavior may utilize dynamic primitives. However, greater computational simplicity may come at the cost of reduced versatility. Evidence for primitives may be garnered by revealing such limitations. This study tested subjects performing a sequence of progressively faster discrete movements in order to “stress” the system. We hypothesized that the increasing pace would elicit a transition to rhythmic movements, assumed to be computationally and neurally more efficient. Abrupt transitions between the two types of movements would support the hypothesis that rhythmic and discrete movements are distinct primitives. Ten subjects performed planar point-to-point arm movements paced by a metronome: starting at 2 s, the metronome intervals decreased by 36 ms per cycle to 200 ms, stayed at 200 ms for several cycles, then increased by similar increments. Instructions emphasized to insert explicit stops between each movement with a duration that equaled the movement time. The experiment was performed with eyes open and closed, and with short and long metronome sounds, the latter explicitly specifying the dwell duration. Results showed that subjects matched instructed movement times but did not preserve the dwell times. Rather, they progressively reduced dwell time to zero, transitioning to continuous rhythmic movements before movement times reached their minimum. The acceleration profiles showed an abrupt change between discrete and rhythmic profiles. The loss of dwell time occurred earlier with long auditory specification, when subjects also showed evidence of predictive control. While evidence for hysteresis was weak, taken together, the results clearly indicated a transition between discrete and rhythmic movements, supporting the proposal that representation is based on primitives rather than on veridical internal models. PMID:23888139

  5. Transitions between Discrete and Rhythmic Primitives in a Unimanual Task

    Directory of Open Access Journals (Sweden)

    Dagmar eSternad

    2013-07-01

    Full Text Available Given the vast complexity of human actions and interactions with objects, we proposed that control of sensorimotor behavior may utilize dynamic primitives. However, greater computational simplicity may come at the cost of reduced versatility. Evidence for primitives may be garnered by revealing such limitations. This study tested subjects performing a sequence of progressively faster discrete movements, in order to stress the system. We hypothesized that the increasing pace would elicit a transition to rhythmic movements, assumed to be computationally and neurally more efficient. Abrupt transitions between the two types of movements would support the hypothesis that rhythmic and discrete movements are distinct primitives. Ten subjects performed planar point-to-point arm movements paced by a metronome: Starting at 2s the metronome intervals decreased by 36ms per cycle to 200ms, stayed at 200ms for several cycles, then increased by similar increments. Instructions emphasized to insert explicit stops between each movement with a duration that equaled the movement time. The experiment was performed with eyes open and closed, and with short and long metronome sounds, the latter explicitly specifying the dwell duration. Results showed that subjects matched instructed movement times but did not preserve the dwell times. Rather, they progressively reduced dwell time to zero, transitioning to continuous rhythmic movements before movement times reached their minimum. The acceleration profiles showed an abrupt change between discrete and rhythmic profiles. The loss of dwell time occurred earlier with long auditory specification, when subjects also showed evidence of predictive control. While evidence for hysteresis was weak, taken together, the results clearly indicated a transition between discrete and rhythmic movements, supporting the proposal that representation is based on primitives rather than on veridical internal models.

  6. Post-Quantum Cryptography: Riemann Primitives and Chrysalis

    OpenAIRE

    Malloy, Ian; Hollenbeck, Dennis

    2018-01-01

    The Chrysalis project is a proposed method for post-quantum cryptography using the Riemann sphere. To this end, Riemann primitives are introduced in addition to a novel implementation of this new method. Chrysalis itself is the first cryptographic scheme to rely on Holomorphic Learning with Errors, which is a complex form of Learning with Errors relying on the Gauss Circle Problem within the Riemann sphere. The principle security reduction proposed by this novel cryptographic scheme applies c...

  7. Polycomb enables primitive endoderm lineage priming in embryonic stem cells

    DEFF Research Database (Denmark)

    Illingworth, Robert S; Hölzenspies, Jurriaan J; Roske, Fabian V

    2016-01-01

    Mouse embryonic stem cells (ESCs), like the blastocyst from which they are derived, contain precursors of the epiblast (Epi) and primitive endoderm (PrEn) lineages. While transient in vivo, these precursor populations readily interconvert in vitro. We show that altered transcription is the driver...... polycomb with dynamic changes in transcription and stalled lineage commitment, allowing cells to explore alternative choices prior to a definitive decision....

  8. Primary extraskeletal Ewing's sarcoma/primitive neuroectodermal tumour of breast

    OpenAIRE

    Ikhwan, S M; Kenneth, V K T; Seoparjoo, A; Zin, A A M

    2013-01-01

    Primary primitive neuroectodermal tumour (PNET) and extraskeletal Ewing's sarcoma belongs to the Ewing's family of tumours. Primary tumours arising from breast are very rare. There are only a few case reports published on primary extraskeletal Ewing's sarcoma and PNET arising from breast. We present an extremely rare case of an inoperable primary Ewing's sarcoma arising from left breast with contralateral breast, lymphatic and lung metastasis.

  9. Primary extraskeletal Ewing's sarcoma/primitive neuroectodermal tumour of breast.

    Science.gov (United States)

    Ikhwan, S M; Kenneth, V K T; Seoparjoo, A; Zin, A A M

    2013-06-21

    Primary primitive neuroectodermal tumour (PNET) and extraskeletal Ewing's sarcoma belongs to the Ewing's family of tumours. Primary tumours arising from breast are very rare. There are only a few case reports published on primary extraskeletal Ewing's sarcoma and PNET arising from breast. We present an extremely rare case of an inoperable primary Ewing's sarcoma arising from left breast with contralateral breast, lymphatic and lung metastasis.

  10. PRIMITIVE MATRICES AND GENERATORS OF PSEUDO RANDOM SEQUENCES OF GALOIS

    Directory of Open Access Journals (Sweden)

    A. Beletsky

    2014-04-01

    Full Text Available In theory and practice of information cryptographic protection one of the key problems is the forming a binary pseudo-random sequences (PRS with a maximum length with acceptable statistical characteristics. PRS generators are usually implemented by linear shift register (LSR of maximum period with linear feedback [1]. In this paper we extend the concept of LSR, assuming that each of its rank (memory cell can be in one of the following condition. Let’s call such registers “generalized linear shift register.” The research goal is to develop algorithms for constructing Galois and Fibonacci generalized matrix of n-order over the field , which uniquely determined both the structure of corresponding generalized of n-order LSR maximal period, and formed on their basis Galois PRS generators of maximum length. Thus the article presents the questions of formation the primitive generalized Fibonacci and Galois arbitrary order matrix over the prime field . The synthesis of matrices is based on the use of irreducible polynomials of degree and primitive elements of the extended field generated by polynomial. The constructing methods of Galois and Fibonacci conjugated primitive matrices are suggested. The using possibilities of such matrices in solving the problem of constructing generalized generators of Galois pseudo-random sequences are discussed.

  11. On the Reduced Testing of a Primitive Element in ${\\\\mathbb Z}_n^\\\\times$

    OpenAIRE

    Suzuki, Hideo; スズキ, ヒデオ; Hideo, Suzuki

    2015-01-01

    The primitive roots in ${\\mathbb Z}_n^\\times$ are defined and exist iff $n = 2, 4, p^{\\alpha}, 2p^{\\alpha}$. Knuth gave the definition of the primitive roots in ${\\mathbb Z}_{p^\\alpha}^\\times$, and showed the necessary and sufficient condition for testing a primitive root in ${\\mathbb Z}_{p^\\alpha}^\\times$. In this paper we define the primitive elements in ${\\mathbb Z}_n^\\times$, which is a generalization of primitive roots, as elements that take the maximum multiplicative order.And we give t...

  12. Une autre ville pour une autre vie. Henri Lefebvre et les situationnistes

    Directory of Open Access Journals (Sweden)

    Philippe Simay

    2008-12-01

    Full Text Available L’un des traits distinctifs du mouvement situationniste est de s’être constamment préoccupé de la question urbaine. Conçue comme l’espace de production de la société du spectacle mais aussi comme un terrain de lutte et d’expérimentation, la ville a représenté pour ce mouvement estudiantin, proche d’Henri Lefebvre, le lieu d’une réinvention radicale de la vie quotidienne. Cet article revient sur la critique situationniste de l’urbanisme de l’après-guerre ainsi que sur les pratiques auxquelles elle a donné lieu (détournement, dérive, cartes psychogéographiques, construction de situations éphémères. Celles-ci peuvent être regardées comme la première expression d’un « droit à la ville », tel que l’entendait Lefebvre. Reste à savoir si le groupe de Guy Debord souhaitait véritablement « changer la ville pour changer la vie » ou si la ville n’était que le théâtre d’une révolution à venir.One of the distinctive traits of the situationist movement is its constant preoccupation with the urban issue. For this student movement close to Henri Lefebvre, the city has been thought of as a choice generic location for the production of the Society of the Spectacle, but also as a test ground for struggle and experimentation – the place where a radical reinvention of daily life can occur. This paper goes back to the situationist critique of post-war urbanism, as well as the behaviors and practices it has given birth to (misappropriation, drifts in meaning, psychogeographic maps, the construct of short-lived situations. These can be seen as the first expression of a « right to the city », in the sense Lefebvre originally meant it have. However, it is still unknown whether Guy Debord's group really wished to « change city-life to change life itself », or if to them the city was merely a theater for the enactment of a revolution to come.

  13. Effects of VIE tagging and partial tissue sampling on the immune response of three-spined stickleback Gasterosteus aculeatus.

    Science.gov (United States)

    Henrich, T; Hafer, N; Mobley, K B

    2014-09-01

    A 14 day experiment on effects of visible implant elastomer (VIE) tagging and spine-clipping of three-spined stickleback Gasterosteus aculeatus showed significant increases in immune response, particularly in the granulocyte:lymphocyte ratio, in both treatments and the sham control. A minimum two-week recovery after handling, anaesthesia, tagging and spine-clipping is recommended to minimize effect of manipulation on the immune system. © 2014 The Fisheries Society of the British Isles.

  14. Niveaux d'analyse et cartographie thématique: groupes ethniques et conditions de vie en Bolivie

    Directory of Open Access Journals (Sweden)

    Jean-Claude ROUX

    1995-03-01

    Full Text Available Les cartes des conditions de vie en Bolivie montrent des formes d’organisation spatiale récurrentes coïncidant étroitement avec celle des langues quechua et aymara. Mais les conclusions sont tout autres lorsque change le niveau d’analyse notamment en raison des différienciations sociales qui apparaissent à l’échelle locale.

  15. Abraham dans l'iconographie des trois religions monothéistes

    OpenAIRE

    Fellous, Sonia

    2013-01-01

    Cet article a été publié en 2004. Depuis, de nouvelles recherches dans ce domaine m'ont conduite à en corriger certains éléments.; Abraham ou Abram est le premier patriarche du peuple d'Israël et nul autre que lui ne portera ce nom dans le récit biblique. Sa vie ne constitue pas un récit narratif continu mais une série d'épisodes souvent dramatiques qui inspirèrent largement l'iconographie biblique antique et médiévale. C'est le sacrifice d'Abraham, expression suprême de son amour pour Dieu q...

  16. Vers une tarification plate dans le Rhône. Enjeux, limites et perspectives de la restructuration tarifaire sur les lignes régulières départementales

    OpenAIRE

    Peggy Durand

    2007-01-01

    Les questions de mobilité au sein des grands bassins de vie et entre les aires urbaines occupent aujourd'hui une place majeure dans les réflexions politiques, notamment à l'échelle départementale. La loi d'Orientation sur les Transports Intérieurs (LOTI) de 1982 a confirmé la compétence des Départements dans la planification et l'organisation des transports collectifs non-urbains de personnes (Art 29). Autorités organisatrices, ils ont aujourd'hui la charge de définir l'offre et les dispositi...

  17. L’éducation à la gestion des risques naturels dans le manuel de géographie de la 1ère année secondaire en Tunisie : analyse didactique et propositions

    OpenAIRE

    Harzalli, Fadhel

    2016-01-01

    L’introduction de l’éducation à la gestion des risques naturels dans les programmes et les manuels est récente dans l’enseignement de la géographie en Tunisie. En effet, l’éducation à la gestion des risques peut être considérée comme un champ éducatif émergeant et un ensemble d’interventions qui vise à informer, motiver et aider les apprenants à adopter volontairement des comportements favorables à la vie, et à se construire une opinion raisonnée sur des questions vives où l’intime et le soci...

  18. Renforcer la résilience dans les collectivités touchées par le tsunami ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Lors du tsunami qui a frappé l'Asie du Sud en décembre 2004, des études ont indiqué qu'une épaisse végétation côtière, telles les mangroves, avait permis de sauver des vies et de réduire les pertes matérielles en servant de barrières naturelles. Par ailleurs, des villageois, comme ceux de Nallavadu dans le territoire de ...

  19. Inondations dans l'Aude: risques et cadre réglementaire de la prévention

    Directory of Open Access Journals (Sweden)

    Cécile Chombard-Gaudin

    2000-03-01

    Full Text Available Les inondations qui ont particulièrement ravagé le département de l'Aude en novembre 1999 ne sont pas exceptionnelles. Face à de tels risques bien connus, seule une politique volontariste de mise en œuvre des outils réglementaires de prévention et la prise en compte des risques dans la gestion de l'espace peut minorer les conséquences sur les vies et les biens.

  20. Profil épidémiologique des tumeurs malignes primitives des glandes salivaires : à propos de 154 cas

    Science.gov (United States)

    Setti, Khadija; Mouanis, Mohamed; Moumni, Abdelmounim; Maher, Mostafa; Harmouch, Amal

    2014-01-01

    Introduction Les tumeurs des glandes salivaires sont des tumeurs rares représentant 3à 5% des tumeurs de la tête et du cou. La classification de l'OMS 2005 distingue les tumeurs épithéliales, les tumeurs mésenchymateuses, les tumeurs hématologiques et les tumeurs secondaires. Méthodes Notre travail consiste en une étude rétrospective réalisée sur une période de 10 ans allant de janvier 2002 à janvier 2012. Les critères d'inclusion étaient: l'âge, le sexe, le siège de la tumeur et le type histologique. Résultats L'incidence annuelle des tumeurs malignes primitives des glandes salivaires dans notre série était de 15 cas par an. Cent cinquante quatre cas de tumeurs malignes primitives des glandes salivaires ont été colligés sans prédominance de sexe (78 femmes (50,6%) et 76 hommes (49,4%)). La moyenne d'âge était de 60 ans avec des extrêmes de 4 et 83 ans et un pic de fréquence entre 51et 70 ans. Deux tiers des cas (65%) avaient une localisation au niveau des glandes principales avec 66 cas au niveau de la parotide (43%) et 34 cas au niveau de la glande sous maxillaire (22%). Cinquante quatre patients avaient une tumeur maligne des glandes salivaires accessoires (35%) dont 61% au niveau du palais. Aucun cas de tumeur maligne de la glande sublinguale n'a été recensé dans notre étude. Le type histologique prédominant dans notre série était le carcinome adénoïde kystique et retrouvé chez 43 patients (27,9%), suivi de l'adénocarcinome sans autre indication chez 37 patients (24%) puis du carcinome mucoépidermoïde chez 16 patients (10,4%) et de l'adénocarcinome polymorphe de bas grade également chez 16 patients (10. 4%). Conclusion Les tumeurs malignes des glandes salivaires représentent un ensemble hétérogène de maladies de caractérisation complexe et de fréquence variable. PMID:25120861

  1. Le Cercle de vie : l'agriculture biologique au Mexique | IDRC ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    13 juil. 2011 ... On n'y trouve plus le calcium provenant du calcaire utilisé dans l'ancien mode de transformation du maïs en tortillas, ce que déplorent clients et producteurs. Sensibiliser le grand public. Il faudra du temps pour sensibiliser les Mexicains aux avantages de la consommation et de la production responsables.

  2. Le début d'une nouvelle vie pour de vieux ordinateurs | IDRC ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    25 janv. 2011 ... Un projet financé par le CRDI qui fournit des ordinateurs aux écoles tout en créant des emplois permet de s'attaquer au problème environnemental causé par les déchets électroniques en Amérique latine et dans les Caraïbes.

  3. Deducing trapdoor primitives in public key encryption schemes

    Science.gov (United States)

    Pandey, Chandra

    2005-03-01

    Semantic security of public key encryption schemes is often interchangeable with the art of building trapdoors. In the frame of reference of Random Oracle methodology, the "Key Privacy" and "Anonymity" has often been discussed. However to a certain degree the security of most public key encryption schemes is required to be analyzed with formal proofs using one-way functions. This paper evaluates the design of El Gamal and RSA based schemes and attempts to parallelize the trapdoor primitives used in the computation of the cipher text, thereby magnifying the decryption error δp in the above schemes.

  4. Thoracoabdominal peripheral primitive neuroectodermal tumors in childhood: radiological features

    International Nuclear Information System (INIS)

    Schulman, H.; Laufer, L.; Newman-Heinman, N.; Kurtzbart, E.; Maor, E.; Zirkin, H.

    2000-01-01

    Peripheral primitive neuroectodermal tumors (PNET) are extremely uncommon, malignant neoplasms affecting mostly children and young adults. We retrospectively reviewed the clinical data and radiological studies of four such cases. All cases were pathologically proven. Plain films, US, and CT scans were used. The youngest child had a huge pelvic tumor and two adolescents each had a chest wall (Askin) tumor. The fourth patient had a most unusual location of the PNET in the anterior mediastinum. The CT findings are emphasized. We emphasize that the markedly abnormal CT findings are not specific for PNET. (orig.)

  5. Characterizing Digital Light Processing (DLP) 3D Printed Primitives

    DEFF Research Database (Denmark)

    Tyge, Emil; Pallisgaard, Jens J.; Lillethorup, Morten

    2015-01-01

    The resolution and repeatability of 3D printing processes depends on a number of factors including the software, hardware, and material used. When printing parts with features that are near or below the nominal printing resolution, it is important to understand how the printer works. For example......, what is the smallest unit shape that can be produced? And what is the reproducibility of that process? This paper presents a method for automatically detecting and characterizing the height, width, and length of micro scale geometric primitives produced via a digital light processing (DLP) 3D printing...

  6. Dust formation in a galaxy with primitive abundances.

    Science.gov (United States)

    Sloan, G C; Matsuura, M; Zijlstra, A A; Lagadec, E; Groenewegen, M A T; Wood, P R; Szyszka, C; Bernard-Salas, J; van Loon, J Th

    2009-01-16

    Interstellar dust plays a crucial role in the evolution of galaxies. It governs the chemistry and physics of the interstellar medium. In the local universe, dust forms primarily in the ejecta from stars, but its composition and origin in galaxies at very early times remain controversial. We report observational evidence of dust forming around a carbon star in a nearby galaxy with a low abundance of heavy elements, 25 times lower than the solar abundance. The production of dust by a carbon star in a galaxy with such primitive abundances raises the possibility that carbon stars contributed carbonaceous dust in the early universe.

  7. CAD-based Monte Carlo automatic modeling method based on primitive solid

    International Nuclear Information System (INIS)

    Wang, Dong; Song, Jing; Yu, Shengpeng; Long, Pengcheng; Wang, Yongliang

    2016-01-01

    Highlights: • We develop a method which bi-convert between CAD model and primitive solid. • This method was improved from convert method between CAD model and half space. • This method was test by ITER model and validated the correctness and efficiency. • This method was integrated in SuperMC which could model for SuperMC and Geant4. - Abstract: Monte Carlo method has been widely used in nuclear design and analysis, where geometries are described with primitive solids. However, it is time consuming and error prone to describe a primitive solid geometry, especially for a complicated model. To reuse the abundant existed CAD models and conveniently model with CAD modeling tools, an automatic modeling method for accurate prompt modeling between CAD model and primitive solid is needed. An automatic modeling method for Monte Carlo geometry described by primitive solid was developed which could bi-convert between CAD model and Monte Carlo geometry represented by primitive solids. While converting from CAD model to primitive solid model, the CAD model was decomposed into several convex solid sets, and then corresponding primitive solids were generated and exported. While converting from primitive solid model to the CAD model, the basic primitive solids were created and related operation was done. This method was integrated in the SuperMC and was benchmarked with ITER benchmark model. The correctness and efficiency of this method were demonstrated.

  8. Meet EPA's Dan Nelson

    Science.gov (United States)

    EPA’s Dan Nelson is the Director of the Human Research Protocol Office at the National Health and Environmental Effect Research Laboratory, Dan works to protect the rights and welfare of EPA’s research participants.

  9. Bahasa, Simbol, dan Religi

    OpenAIRE

    Supriyadi, Supriyadi

    1999-01-01

    Manusia sering disebut sebagai makhluk sosial, makhluk berakal, makhluk berseni, dan sebagainya. Tulisan ini secara tidak langsung membicarakan manusia sebagai makhluk berbahasa, bersimbol, dan bereligi . Meskipun demikian, titik tolaknya bukan pada manusia itu sendiri, tetapi pada bahasa, simbol, dan religinya, terutama pada hubungan di antara ketiganya . Hubungan antara bahasa dan simbol tidak diragukan lagi karena bahasa merupakan jenis simbol . Demikian juga hubungan antara simbol dengan ...

  10. Stochastic Ocean Predictions with Dynamically-Orthogonal Primitive Equations

    Science.gov (United States)

    Subramani, D. N.; Haley, P., Jr.; Lermusiaux, P. F. J.

    2017-12-01

    The coastal ocean is a prime example of multiscale nonlinear fluid dynamics. Ocean fields in such regions are complex and intermittent with unstationary heterogeneous statistics. Due to the limited measurements, there are multiple sources of uncertainties, including the initial conditions, boundary conditions, forcing, parameters, and even the model parameterizations and equations themselves. For efficient and rigorous quantification and prediction of these uncertainities, the stochastic Dynamically Orthogonal (DO) PDEs for a primitive equation ocean modeling system with a nonlinear free-surface are derived and numerical schemes for their space-time integration are obtained. Detailed numerical studies with idealized-to-realistic regional ocean dynamics are completed. These include consistency checks for the numerical schemes and comparisons with ensemble realizations. As an illustrative example, we simulate the 4-d multiscale uncertainty in the Middle Atlantic/New York Bight region during the months of Jan to Mar 2017. To provide intitial conditions for the uncertainty subspace, uncertainties in the region were objectively analyzed using historical data. The DO primitive equations were subsequently integrated in space and time. The probability distribution function (pdf) of the ocean fields is compared to in-situ, remote sensing, and opportunity data collected during the coincident POSYDON experiment. Results show that our probabilistic predictions had skill and are 3- to 4- orders of magnitude faster than classic ensemble schemes.

  11. CT and MR findings of primitive neuroectodermal tumor

    International Nuclear Information System (INIS)

    Kook, Shin Ho; Kim, In One; Chang, Kee Hyun; Han, Moon Hee; Cho, Byung Kyu

    1991-01-01

    Cerebral primitive neuroectodermal tumor (PNET), consisting of undifferentiated primitive cells, is a neoplasm of children and young adults that occurs predominantly in the supratentorial compartment. In this report, we retrospectively reviewed and analyzed 18 CT and 6 MR findings in 18 patients with pathologically-proven PNET to discover the characteristic findings, if may. The most characteristic feature of the PNETs was a well-defined multilobular oval or round large mass with components of peripheral cystic change or calcification in the cerebral hemisphere, especially in the parietal lobe. Usually there was only minimal surrounding edema. The CT density of the tumor was iso - or slightly high density with homogeneous contrast enhancement in the solid portion and low density in the cystic area. MR findings demonstrated iso - signal intensity on both T1 - weighted (T1WI) and T2-weighted (T2WI) images and dense enhancement in the solid element. The cystic portion revealed low intensity on T1WI and high intensity on T2WI

  12. Effects of primitive photosynthesis on Earth's early climate system

    Science.gov (United States)

    Ozaki, Kazumi; Tajika, Eiichi; Hong, Peng K.; Nakagawa, Yusuke; Reinhard, Christopher T.

    2018-01-01

    The evolution of different forms of photosynthetic life has profoundly altered the activity level of the biosphere, radically reshaping the composition of Earth's oceans and atmosphere over time. However, the mechanistic impacts of a primitive photosynthetic biosphere on Earth's early atmospheric chemistry and climate are poorly understood. Here, we use a global redox balance model to explore the biogeochemical and climatological effects of different forms of primitive photosynthesis. We find that a hybrid ecosystem of H2-based and Fe2+-based anoxygenic photoautotrophs—organisms that perform photosynthesis without producing oxygen—gives rise to a strong nonlinear amplification of Earth's methane (CH4) cycle, and would thus have represented a critical component of Earth's early climate system before the advent of oxygenic photosynthesis. Using a Monte Carlo approach, we find that a hybrid photosynthetic biosphere widens the range of geochemical conditions that allow for warm climate states well beyond either of these metabolic processes acting in isolation. Our results imply that the Earth's early climate was governed by a novel and poorly explored set of regulatory feedbacks linking the anoxic biosphere and the coupled H, C and Fe cycles. We suggest that similar processes should be considered when assessing the potential for sustained habitability on Earth-like planets with reducing atmospheres.

  13. Medulloblastomas - primitive neuroectodermal tumours in the adult population

    International Nuclear Information System (INIS)

    Smee, R.I.; Williams, J.R.

    2008-01-01

    Medulloblastomas - primitive neuroectodermal tumours are rare in adults. This review will evaluate a single centre's experience with this malignancy. The medulloblastoma - primitive neuroectodermal tumour database was evaluated for all patients aged more than 18 years who were referred for management. Relevant information from the database was abstracted to provide a descriptive record of this malignancy. Between 1977-2004 there were 11 patients referred, 1 with persistent disease and 10 were eligible, presenting with initial diagnosis. There was increased intracranial pressure in 50% of patients. Most patients had symptoms >3 months, with three having symptoms 1-3 months before diagnosis and one patient having thoracic dural metastases at presentation. Complete resection was recorded in four patients and six had 50-90% resection. All patients completed craniospinal radiotherapy (35-36 Gy at 1.8-2.0 Gy fractions) barring one patient, who died of surgical complications during his radiotherapy. Chemotherapy was given in five of the nine patients postradiotherapy. There were two posterior fossa recurrences, with associated supratentorial and extra central nervous system disease. Of the 10 primary patients 7 are alive with no evidence of diease, 2 died because of disease, with 1 intercurrent death. One patient developed a second malignancy. The outcome for adults matches that of the more common paediatric patients. Radiotherapy could control local disease even where complete resection was not achieved.

  14. Identifying the primitive path mesh in entangled polymer liquids

    International Nuclear Information System (INIS)

    Sukumaran, Sathish K.; Kremer, Kurt; Grest, Gary Stephen; Everaers, Ralf

    2004-01-01

    Similar to entangled ropes, polymer chains cannot slide through each other. These topological constraints, the so-called entanglements, dominate the viscoelastic behavior of high-molecular-weight polymeric liquids. Tube models of polymer dynamics and rheology are based on the idea that entanglements confine a chain to small fluctuations around a primitive path which follows the coarse-grained chain contour. To establish the microscopic foundation for these highly successful phenomenological models, we have recently introduced a method for identifying the primitive path mesh that characterizes the microscopic topological state of computer-generated conformations of long-chain polymer melts and solutions. Here we give a more detailed account of the algorithm and discuss several key aspects of the analysis that are pertinent for its successful use in analyzing the topology of the polymer configurations. We also present a slight modification of the algorithm that preserves the previously neglected self-entanglements and allows us to distinguish between local self-knots and entanglements between distant sections of the same chain. Our results indicate that the latter make a negligible contribution to the tube and that the contour length between local self-knots, N 1k is significantly larger than the entanglement length N e

  15. An online gait generator for quadruped walking using motor primitives

    Directory of Open Access Journals (Sweden)

    Chunlin Zhou

    2016-11-01

    Full Text Available This article presents implementation of an online gait generator on a quadruped robot. Firstly, the design of a quadruped robot is presented. The robot contains four leg modules each of which is constructed by a 2 degrees of freedom (2-DOF five-bar parallel linkage mechanism. Together with other two rotational DOF, the leg module is able to perform 4-DOF movement. The parallel mechanism of the robot allows all the servos attached on the body frame, so that the leg mass is decreased and motor load can be balanced. Secondly, an online gait generator based on dynamic movement primitives for the walking control is presented. Dynamic movement primitives provide an approach to generate periodic trajectories and they can be modulated in real time, which makes the online adjustment of walking gaits possible. This gait controller is tested by the quadruped robot in regulating walking speed, switching between forward\\backward movements and steering. The controller is easy to apply, expand and is quite effective on phase coordination and online trajectory modulation. Results of simulated experiments are presented.

  16. La pisciculture familiale améliore la qualité de vie en Amazonie ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Pays enclavé de l'Amérique du Sud, la Bolivie affiche le plus bas taux de consommation de poisson par habitant dans le monde, et ce malgré une grande diversité de poissons d'eau douce. Le gouvernement a reconnu récemment la contribution potentielle du poisson pour assurer la sécurité alimentaire et a mis sur pied ...

  17. Le Cercle de vie : l'agriculture biologique au Mexique | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    13 juil. 2011 ... Le marché, Le Círculo de producción y consumo responsable [le Cercle ... En 2001, le Centre de recherches pour le développement international (CRDI) a financé ... provenant du calcaire utilisé dans l'ancien mode de transformation du ... Droits d'auteur · Éthique de la recherche · Politique de libre accès ...

  18. , TOUCHE PAS À MA TERRE, I ! ' C'EST MA VIE !

    International Development Research Centre (IDRC) Digital Library (Canada)

    nouvelles lois afin d'assurer un plus grand contrôle sur leurs terres arables. C'est ... phénomène, du respect des réglementations locales de gestion foncière. ...... imposé dans la mesure où, l'Etat ayant octroyé les différents permis à. Newcrest ...

  19. Une Nouvelle Forme d’Autobiographie dans Les Années d’Annie Ernaux: Autobiographie Impersonnelle

    Directory of Open Access Journals (Sweden)

    Seçil Yücedağ

    2017-12-01

    Full Text Available Annie Ernaux, considérée comme l’une des femmes écrivaines les plus célèbres du XXIe siècle, a exprimé l’angoisse commune de son âge et de son passé en rédigeant Les Années. Elle n’avait pas non seulement le but de décrire sa vie, mais aussi d’esquisser l’histoire de la société française à laquelle elle appartient. Lorsqu’elle est venue au monde en 1940, le monde était au seuil de la Seconde Guerre mondiale. Etant élevée dans cette atmosphère chaotique, elle a appris beaucoup de choses de sa société, de sa famille et de son environnement. Annie Ernaux a découvert le monde comme une jeune fille, une mère, une épouse et une grand-mère. Ses expériences sociales et familiales l’ont beaucoup mûrie et elle a commencé à rédiger ses pensées. Ses souvenirs ont fait partie de ses écritures autobiographiques. Dans Les Années, Annie Ernaux a profité de toutes ses expériences personnelles et sociales avec de différents moyens. Elle a essayé d’établir des liens entre l’histoire de sa vie et celle de la société. Elle a accordé une importance à la vie sociale plutôt que sa propre vie dans Les Années. Elle y a développé des propres techniques d’écriture en se servant des photos familiales et personnelles, d’un film, d’une vidéo, des marques de publicité, des chansons, d’un tableau, des notes de journal ainsi que des événements sociologiques et historiques. Elle a ainsi créé une nouvelle forme d’autobiographie : autobiographie impersonnelle.

  20. Evidence for extreme Ti-50 enrichments in primitive meteorites

    International Nuclear Information System (INIS)

    Fahey, A.; Mckeegan, K.D.; Zinner, E.; Goswami, J.N.; Physical Research Lab., Ahmedabad, India)

    1985-01-01

    The results of the first high mass resolution ion microprobe study of Ti isotopic compositions in individual refractory grains from primitive carbonaceous meteorites are reported. One hibonite from the Murray carbonaceous chondrite has a 10 percent excess of Ti-50, 25 times higher than the maximum value previously reported for bulk samples of refractory inclusions from carbonaceous chondrites. The variation of the Ti compositions between different hibonite grains, and among pyroxenes from a single Allende refractory inclusion, indicates isotopic inhomogeneities over small scale lengths in the solar nebula and emphasizes the importance of the analysis of small individual phases. This heterogeneity makes it unlikely that the isotopic anomalies were carried into the solar system in the gas phase. 20 references

  1. The CHY representation of tree-level primitive QCD amplitudes

    International Nuclear Information System (INIS)

    Cruz, Leonardo de la; Kniss, Alexander; Weinzierl, Stefan

    2015-01-01

    In this paper we construct a CHY representation for all tree-level primitive QCD amplitudes. The quarks may be massless or massive. We define a generalised cyclic factor Ĉ(w,z) and a generalised permutation invariant function Ê(z,p,ε). The amplitude is then given as a contour integral encircling the solutions of the scattering equations with the product ĈÊ as integrand. Equivalently, it is given as a sum over the inequivalent solutions of the scattering equations, where the summand consists of a Jacobian times the product ĈÊ. This representation separates information: The generalised cyclic factor does not depend on the helicities of the external particles, the generalised permutation invariant function does not depend on the ordering of the external particles.

  2. Evolution of lung breathing from a lungless primitive vertebrate.

    Science.gov (United States)

    Hoffman, M; Taylor, B E; Harris, M B

    2016-04-01

    Air breathing was critical to the terrestrial radiation and evolution of tetrapods and arose in fish. The vertebrate lung originated from a progenitor structure present in primitive boney fish. The origin of the neural substrates, which are sensitive to metabolically produced CO2 and which rhythmically activate respiratory muscles to match lung ventilation to metabolic demand, is enigmatic. We have found that a distinct periodic centrally generated rhythm, described as "cough" and occurring in lamprey in vivo and in vitro, is modulated by central sensitivity to CO2. This suggests that elements critical for the evolution of breathing in tetrapods, were present in the most basal vertebrate ancestors prior to the evolution of the lung. We propose that the evolution of breathing in all vertebrates occurred through exaptations derived from these critical basal elements. Copyright © 2015 Elsevier B.V. All rights reserved.

  3. Amylose primitive médiastinale d'aspect pseudotumoral

    Science.gov (United States)

    Mahfoudhi, Madiha; Mamlouk, Habiba; Turki, Sami; Kheder, Adel

    2015-01-01

    L'amylose primitive médiastinale isolée est rare et de diagnostic difficile. Nous rapportons l'observation d'un patient âgé de 41 ans ayant présenté une dyspnée et des crachats hémoptoïques. A l'examen physique il n'avait pas d'hypotension orthostatique. Les aires ganglionnaires périphériques étaient libres. La tomodensitométrie thoracique a objectivé un magma d'adénopathies médiastinales réalisant une masse de 45 mm x 60 mm. L'examen anatomopathologique d'une biopsie ganglionnaire guidée par médiastinoscopie a conclut a une amylose médiastinale de type AL. Il n'avait pas d'autres localisations amyloïdes. Un myélome multiple a été éliminé. Le diagnostic d'amylose primitive médiastinale de type AL a été retenu. Le traitement s'est basé sur des cures de Melphalan-prednisone. La chirurgie était évitée vu le risque hémorragique élevé. L’évolution était marquée par l'amélioration de la dyspnée, la disparition de l'hémoptysie et la diminution de la taille de la masse ganglionnaire devenant 25 mm x 20 mm. PMID:26308913

  4. Le concept de la religiosité dans l’œuvre d’Aharon Appelfeld à travers le personnage féminin On the Question of Religiosity in Appelfeld’s Narration לשאלת הרלגיוזיות ביצירתו של אהרן אפלפלד

    Directory of Open Access Journals (Sweden)

    Masha Itzhaki

    2011-10-01

    Full Text Available L'objet de cet article est le concept de religiosité dans la narration d’Appelfeld et ses relations avec le hassidisme.Cette question est examinée principalement sur la base de trois de ses romans: Katerina, La chambre de Mariana et Toute une vie, en portant une attention particulière aux protagonistes féminins, juifs aussi bien que catholiques. Selon l'article, Appelfeld a créé un nouveau type de judaïsme, primitif, qui est totalement déconnecté de toute institution sociale ou religieuse. Cette « nouvelle » religion dont la nature est quelque peu mystique, est essentiellement basée sur l'idée de panthéisme, d'une part et à la contemplation de l'autre et à partir de ces points de vue, il est assez lié aux principales caractéristiques du hassidisme, même si les non-juifs pourraient également prendre part à cette expérience très spéciale.The subject matter of the article is the concept of religiosity as figures in Appelfeld’s narration and it’s relationships with Hassidism. This question is examined mostly on the basis of three of his novels: Katerina, Flowers of Darkness and A Perfect Life, with extensions to few more, on paying a special attention to feminine protagonists, Jewish as well as Catholics. According to the article, Appelfeld has created a new type of Judaism, a primitive one, which is totally disconnected of any social or religious institution. This “new” religion whose nature is somewhat mystical, is mainly based on the idea of pantheism on one hand and contemplation on the other and from these points of view, it is quite related to the main characteristics of the Hassidism even if non-Jewish might also take part in it’s very special experience.נושא המאמר הוא מושג הרלגיוזיות ביצירתו של אפלפלד וקשריו עם החסידות. שאלה זו נבדקת

  5. Plasticité du droit constitutionnel et dynamique de l’autoritarisme dans la Tunisie de Ben Ali

    Directory of Open Access Journals (Sweden)

    Éric Gobe

    2012-02-01

    Full Text Available Le droit des institutions politiques dans la Tunisie de Ben Ali apparaît particulièrement plastique et instable car ce sont les échéances politiques liées à la pérennisation du régime autoritaire qui dictent le rythme et la nature des changements institutionnels. Ce droit est conçu de façon à rendre impensable l’éventualité d’une alternance au sommet de l’État tout en permettant aux pouvoirs publics tunisiens de tenir un discours sur la résolution de la Tunisie à approfondir son engagement démocratique. Les récents textes constitutionnels et législatifs organisant la vie politique concourent, dans le même temps à limiter formellement les pratiques autoritaires tout en les autorisant si nécessaire.

  6. Positron annihilation in solids: positronium diffusion; Annihilation du positon dans les solides diffusion du positonium

    Energy Technology Data Exchange (ETDEWEB)

    Paulin, R [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1969-04-01

    The existence of two slow components in life-time spectrum of positron annihilation in silicium, aluminium and alkaline-earth oxides powders is established. These two long mean-lives {approx_equal} 10{sup -9} s and {approx_equal} 10{sup -7} s result from annihilation, inside and outside the grains respectively, of ortho-positronium formed in defects present in ionic crystals investigated. Dynamic behaviour of Ps, so revealed, is analyzed in terms of diffusion in excellent agreement with experiment. Diffusion constants of the order of 10{sup -4} cm{sup 2} sec{sup -1} and mean path before annihilation from 50 to 300 Angstrom are measured. From 100 to 500 K the temperature influence upon diffusion process is effective only in SiO{sub 2} where activation energy is found about 10{sup -2} eV. The p-Ps zero point energy evaluated by angular correlation gives the order of magnitude for defects dimensions and diffusion mean-time. Finally, o-Ps behaviour in space between grains, where its interaction with atmospheric gases can be only detected, is analysed. (author) [French] Nous mettons en evidence l'existence de deux composantes lentes dans le spectre de temps de vie du positon avant annihilation dans des poudres d'oxydes alcalinoterreux d'alumine et de silice. Ces deux longues vies moyennes {approx_equal} 10{sup -9} s et {approx_equal} 10{sup -7} s resultent respectivement de l'annihilation a l'interieur et a l'exterieur des grains de l'ortho-positonium forme dans certains defauts presents dans les cristaux ioniques etudies. L'analyse des proprietes dynamiques du Ps ainsi revelees, est effectuee en termes de diffusion en excellent accord avec l'experience. Des constantes de diffusion de l'ordre de 10{sup -4} cm{sup 2} sec{sup -1} et des parcours moyens avant annihilation variant de 50 a 300 Angstrom sont ainsi mesures. Entre 100 et 500 K l'influence de la temperature sur le processus de diffusion n'est sensible que dans SiO{sub 2} ou l'energie d'activation est trouvee

  7. The first trimester human placenta is a site for terminal maturation of primitive erythroid cells.

    Science.gov (United States)

    Van Handel, Ben; Prashad, Sacha L; Hassanzadeh-Kiabi, Nargess; Huang, Andy; Magnusson, Mattias; Atanassova, Boriana; Chen, Angela; Hamalainen, Eija I; Mikkola, Hanna K A

    2010-10-28

    Embryonic hematopoiesis starts via the generation of primitive red blood cells (RBCs) that satisfy the embryo's immediate oxygen needs. Although primitive RBCs were thought to retain their nuclei, recent studies have shown that primitive RBCs in mice enucleate in the fetal liver. It has been unknown whether human primitive RBCs enucleate, and what hematopoietic site might support this process. Our data indicate that the terminal maturation and enucleation of human primitive RBCs occurs in first trimester placental villi. Extravascular ζ-globin(+) primitive erythroid cells were found in placental villi between 5-7 weeks of development, at which time the frequency of enucleated RBCs was higher in the villous stroma than in circulation. RBC enucleation was further evidenced by the presence of primitive reticulocytes and pyrenocytes (ejected RBC nuclei) in the placenta. Extravascular RBCs were found to associate with placental macrophages, which contained ingested nuclei. Clonogenic macrophage progenitors of fetal origin were present in the chorionic plate of the placenta before the onset of fetoplacental circulation, after which macrophages had migrated to the villi. These findings indicate that placental macrophages may assist the enucleation process of primitive RBCs in placental villi, implying an unexpectedly broad role for the placenta in embryonic hematopoiesis.

  8. Visible implant elastomer (VIE) tagging and simulated predation risk elicit similar physiological stress responses in three-spined stickleback Gasterosteus aculeatus.

    Science.gov (United States)

    Fürtbauer, I; King, A J; Heistermann, M

    2015-05-01

    The effect of visible implant elastomer (VIE) tagging on the immediate physiological stress response was tested in female three-spined stickleback Gasterosteus aculeatus, using non-invasive waterborne cortisol analysis. Post-tagging cortisol levels were significantly higher compared with pretreatment baseline concentrations; however, when comparing post-tagging cortisol levels with cortisol levels after exposure to a simulated aerial predator, no significant differences were found. This study indicates that VIE tagging elicits a physiological stress response similar to those occurring in the everyday lives of this important biological model organism. © 2015 The Fisheries Society of the British Isles.

  9. Analisis Kebijakan dan Efektivitas Organisasi

    Directory of Open Access Journals (Sweden)

    Amir Syarifudin Kiwang

    2015-05-01

    Full Text Available Penerapan Peraturan Gubernur Nusa Tenggara Timur Nomor 8 Tahun 2011 tentang Organisasi dan Tata Kerja Unit Pelaksana Teknis Pendidikan dan Pelatihan Koperasi dan Usaha Mikro Kecil dan Menengah pada Dinas Koperasi dan Usaha Mikro Kecil dan Menengah Provinsi Nusa Tenggara Timur adalah dalam rangka untuk meningkatkan efektivitas kerja organisasi pada UPT Diklat Koperasi dan UMKM. Penelitian ini berusaha untuk melihat dampak kebijakan organisasi terhadap efektivitas organisasi dengan menggunakan enam elemen variabel dari kebijakan dan praktik manajemen. Keenam elemen tersebut adalah penetapan tujuan strategis, pencarian dan pemanfaatan sumber daya, lingkungan prestasi, proses komunikasi, kepemimpinan dan pengambilan keputusan, serta adaptasi dan inovasi organisasi. Penelitian kualitatif ini menggunakan pendekatan studi kasus. Teknik analisis data yang digunakan adalah analisis data model Miles dan Huberman, yang terdiri atas reduksi data, display/penyajian data, dan kesimpulan/verifikasi. Hasil penelitian menunjukkan bahwa efektivitas organisasi pada UPT Diklat koperasi dan UMKM belum berjalan secara baik, hal ini dapat dilihat dari beberapa hal antara lain, belum adanya tenaga spesialisasi pengelola diklat dan tenaga khusus (sarjana di bidang perkoperasian dan kondisi lingkungan kerja (lingkungan prestasi pada UPT Diklat koperasi dan UMKM yang belum efektif. Penempatan pegawai juga belum tepat, mutasi ke UPT Diklat Koperasi dan UMKM tidak memperhatikan latar belakang pendidikan dan spesialisasi/keahlian pegawai sehingga membutuhkan waktu dalam proses penyesuaian serta menurunkan jumlah pelaksanaan diklat dikarenakan keterbatasan alokasi dana.

  10. TANGKI SEPTIK DAN MASALAHNYA

    Directory of Open Access Journals (Sweden)

    Sri Soewasti Soesanto

    2012-10-01

    Full Text Available Manusia yang sehat tiap hari membuang tinja yang harus ditampung dan/atau diolah secara saniter. Meskipun Indonesia telah 55 tahun merdeka dan telah memiliki banyak ahli sanitasi/teknik penyehatan baik lulusan dalam maupun luar negeri, namun cara pengelolaan tinja yang ada kebanyakan masih belum memenuhi syarat kesehatan. Tangki septik dianggap sebagai cara penampungan tinja yang terbaik, padahal sebenarnya masih terjadi pencemaran tanah dan air melalui saluran perembesan.Tangki septik (septic tank merupakan salah satu macam sarana pengolahan tinja manusia yang pada garis besarnya terdiri dari sebuah tangki pembusukan lumpur (sludge digester dan saluran perembesan efluen. Tangki pembusukan harus memenuhi syarat mengenai perbandingan panjang dan lebar serta syarat kedalaman maksimum dan minimum, agar pembusukan lumpur dari tinja manusia dapat berjalan sempurna malahan tidak berbau busuk lagi.

  11. Evaluation by electronic paramagnetic resonance of the number of free radicals produced in irradiated rat bone; Evaluation par resonance paramagnetique electronique du nombre de radicaux libres produits dans l'os de rat irradie

    Energy Technology Data Exchange (ETDEWEB)

    Marble, G; Valderas, R [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1966-07-01

    The number of long half-life free radicals created by gamma irradiation in the bones of the rat has been determined from the electrons paramagnetic resonance spectrum. This number decreases slowly with time (calculated half life: 24 days). It is proportional to the dose of gamma radiation given to the rat. The method could find interesting applications in the field of biological dosimetry. (authors) [French] Le nombre de radicaux libres a vie longue crees par irradiation gamma dans l'os de rat a ete determine a partir du spectre de resonance paramagnetique electronique. Ce nombre decroit lentement avec le temps (demi-vie calculee {approx_equal} 24 jours). IL est proportionnel a la dose de rayonnement gamma delivree au rat. La methode pourra trouver en dosimetrie biologique des applications interessantes. (auteurs)

  12. Evaluation by electronic paramagnetic resonance of the number of free radicals produced in irradiated rat bone; Evaluation par resonance paramagnetique electronique du nombre de radicaux libres produits dans l'os de rat irradie

    Energy Technology Data Exchange (ETDEWEB)

    Marble, G.; Valderas, R. [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1966-07-01

    The number of long half-life free radicals created by gamma irradiation in the bones of the rat has been determined from the electrons paramagnetic resonance spectrum. This number decreases slowly with time (calculated half life: 24 days). It is proportional to the dose of gamma radiation given to the rat. The method could find interesting applications in the field of biological dosimetry. (authors) [French] Le nombre de radicaux libres a vie longue crees par irradiation gamma dans l'os de rat a ete determine a partir du spectre de resonance paramagnetique electronique. Ce nombre decroit lentement avec le temps (demi-vie calculee {approx_equal} 24 jours). IL est proportionnel a la dose de rayonnement gamma delivree au rat. La methode pourra trouver en dosimetrie biologique des applications interessantes. (auteurs)

  13. DEPRESI DAN GANGGUAN TIDUR

    Directory of Open Access Journals (Sweden)

    Wayan Eko Radityo

    2012-12-01

    Full Text Available Depresi merupakan gangguan mood berupa kesedihan yang intens, berlangsung dalamwaktu lama, dan mengganggu kehidupan normal yang insidennya semakin meningkatseiring dengan meningkatnya tekanan hidup. Tahun 2020, depresi diperkirakanmenempati urutan kedua penyakit di dunia. Gejala-gejala depresi terdiri dari gangguanemosi, gangguan kognitif, keluhan somatik, gangguan psikomotor, dan gangguanvegetatif. Salah satu gejala depresi yang muncul adalah gangguan tidur yang bisaberupa insomnia, bangun secara tiba-tiba, dan hipersomnia. Hal ini disebabkan olehgangguan neurotransmiter dan regulasi hormon. Selain sebagai gejala depresi, gangguantidur juga bisa merupakan penyebab depresi. Beberapa penelitian memberikanhubungan gangguan tidur dapat meningkatkan risiko depresi di kemudian hari.

  14. Functional limitations and overweight among migrants in the Histoire de Vie study (Insee, 2003).

    Science.gov (United States)

    Lert, F; Melchior, M; Ville, I

    2007-12-01

    In France, epidemiological data on immigrant population are limited since characterization of immigrants is viewed as a sensitive issue. The Histoire de Vie survey has enabled the description of the association of immigration characteristics and two health indicators. Health-related functional limitations and overweight status (BMI> or =25 kg/m(2)) were studied among 18 to 64 years old using indirect age standardization. Immigration status was characterized in four different ways: via the migratory pathways of interviewees and their parents (French born to two French-born parents, second-generation, immigrated at the age of 15 or younger, immigrated at the age of 16 or older), citizenship (French by birth, French by naturalisation, non French), geographical origin (France, Europe, outside Europe) and language(s) spoken at home (French mother tongue, French for persons who do not have French as mother tongue, French and another language, another language). The analyses were conducted separately in men and in women and stratified by occupational status (upper and lower). For functional limitations, the analysis was repeated excluding participants whose limitations occurred before the age of 19, which was the average age of immigration, to assess a possible healthy migrant effect. Compared to French men born to two French parents, an increased rate of functional limitations was observed among men born in Europe and/or who had at least one parent born in Europe (SMR: 1.4; 95% CI: 1.06-1.81) and a reduced rate among participants born outside Europe or who had at least one parent born outside Europe (SMR: 0.63; 95% CI: 0.46-0.86); these differences remained when social status was taken into account. Among women, a tendency towards a lower rate of functional limitations was found in lower social status groups among those who immigrated as adults, among non French citizens and among non Europeans. Restricting the analysis to individuals free of limitations at the age of 19

  15. The Central Nervous in system Rhabdoid tumor primitive

    International Nuclear Information System (INIS)

    Manana, G.; Bernachin, J.; Waskoff, S.; Panuncio, A.

    2004-01-01

    Primitive Rhabdoid tumors of the Central Nervous system are entities of very low frequency and since 1942 is the first event observed in a total of 16,000 cases studied in the Laboratory of Neuropathology, Clinical Hospital. Until 2003 were described 118 case in the literature. The case is about the 3 years old child with no previous medical history consulted for 3 months with headaches, repeated vomiting, irritability and non specific abnormal gait. On examination is found a physical waking depression and great hydrocephalus in V I bilateral pair so is submitted to a emergency surgery. RMI CT and MRI performed reveals large frontal tumor that reaches the oval center with cystic and calcifications areas. Three days after is operates for the intraventricular tumor without post operative complications. Receive chemotherapy and the patient died 2 years later. The neuro pathological and ultrastructural study reveals a Rhabdoid malignancy brain tumor of grade IV as well as were analyzed histopathological and ultrastructural aspects of this entity

  16. Modeling discrete and rhythmic movements through motor primitives: a review.

    Science.gov (United States)

    Degallier, Sarah; Ijspeert, Auke

    2010-10-01

    Rhythmic and discrete movements are frequently considered separately in motor control, probably because different techniques are commonly used to study and model them. Yet the increasing interest in finding a comprehensive model for movement generation requires bridging the different perspectives arising from the study of those two types of movements. In this article, we consider discrete and rhythmic movements within the framework of motor primitives, i.e., of modular generation of movements. In this way we hope to gain an insight into the functional relationships between discrete and rhythmic movements and thus into a suitable representation for both of them. Within this framework we can define four possible categories of modeling for discrete and rhythmic movements depending on the required command signals and on the spinal processes involved in the generation of the movements. These categories are first discussed in terms of biological concepts such as force fields and central pattern generators and then illustrated by several mathematical models based on dynamical system theory. A discussion on the plausibility of theses models concludes the work.

  17. Primitive neuroectodermal tumor of adrenal: Clinical presentation and outcomes

    Directory of Open Access Journals (Sweden)

    Deep Dutta

    2013-01-01

    Full Text Available Primitive neuroectodermal tumor (PNET of adrenal is an extremely rare tumor of neural crest origin. A nonfunctional left adrenal mass (14.6 × 10.5 × 10.0 cm on computed tomography (CT was detected in a 40-year-old lady with abdominal pain, swelling, and left pleural effusion. She underwent left adrenalectomy and left nephrectomy with retroperitoneal resection. Histopathology revealed sheets and nest of oval tumor cells with hyperchromatic nuclei, prominent nucleoli, scanty cytoplasm, brisk mitotic activity, necrosis, lymphovascular invasion, capsular invasion, and extension to the surrounding muscles; staining positive for Mic-2 (CD-99 antigen, vimentin, synaptophysin, and Melan-A. Thoracocentesis, pleural fluid study, and pleural biopsy did not show metastasis. She responded well to vincristine, adriamycin, and cyclophosphamide followed by ifosfamide and etoposide (IE. This is the first report of adrenal peripheral PNET (pPNET from India. This report intends to highlight that pPNET should be suspected in a patient presenting with huge nonfunctional adrenal mass which may be confused with adrenocortical carcinoma.

  18. Multiple Ewing Sarcoma/Primitive Neuroectodermal Tumors in the Mediastinum

    Science.gov (United States)

    Bae, Sung Hwan; Hwang, Jung Hwa; Da Nam, Bo; Kim, Hyun Jo; Kim, Ki-Up; Kim, Dong Won; Choi, In Ho

    2016-01-01

    Abstract Ewing sarcoma/primitive neuroectodermal tumors (ES/PNET) are high-grade malignant neoplasms. These malignancies present very rare tumors of thoracopulmonary area and even rarer in the mediastinum. In our knowledge, ES/PNET presented with multiple mediastinal masses has not been reported previously. We experienced a case of a 42-year-old man presented with gradual onset of left-side pleuritic chest pain. A contrast-enhanced chest computed tomography (CT) scan showed separate 2 large heterogeneously enhancing masses in each anterior and middle mediastinum of the left hemithorax. Positron emission tomography-computed tomography (PET-CT) scan revealed high fluorodeoxyglucose (FDG) uptake in the mediastinal masses. After surgical excision for the mediastinal masses, both of the masses were diagnosed as the ES/PNET group of tumors on the histopathologic examination. The patient refused postoperative adjuvant chemotherapy and came back with local tumor recurrence and distant metastasis on 4-month follow-up after surgical resection. We report this uncommon form of ES/PNET. We are to raise awareness that this rare malignancy should be considered as a differential diagnosis of the malignant mediastinal tumors and which can be manifested as multiple masses in a patient. Understanding this rare entity of extra-skeletal ES/PNET and characteristic imaging findings can help radiologists and clinicians to approach proper diagnosis and better management for this highly malignant tumor. PMID:26886614

  19. Rapid world modeling: Fitting range data to geometric primitives

    International Nuclear Information System (INIS)

    Feddema, J.; Little, C.

    1996-01-01

    For the past seven years, Sandia National Laboratories has been active in the development of robotic systems to help remediate DOE's waste sites and decommissioned facilities. Some of these facilities have high levels of radioactivity which prevent manual clean-up. Tele-operated and autonomous robotic systems have been envisioned as the only suitable means of removing the radioactive elements. World modeling is defined as the process of creating a numerical geometric model of a real world environment or workspace. This model is often used in robotics to plan robot motions which perform a task while avoiding obstacles. In many applications where the world model does not exist ahead of time, structured lighting, laser range finders, and even acoustical sensors have been used to create three dimensional maps of the environment. These maps consist of thousands of range points which are difficult to handle and interpret. This paper presents a least squares technique for fitting range data to planar and quadric surfaces, including cylinders and ellipsoids. Once fit to these primitive surfaces, the amount of data associated with a surface is greatly reduced up to three orders of magnitude, thus allowing for more rapid handling and analysis of world data

  20. Primary Ewing Sarcoma/Primitive Neuroectodermal Tumor of the Stomach

    Directory of Open Access Journals (Sweden)

    Safi Khuri

    2016-11-01

    Full Text Available Ewing sarcoma/primitive neuroectodermal tumor (ES/PNET is a tumor of small round cells arising in skeletal tissues. These tumors rarely arise in the stomach. We present a 31-year-old healthy female patient who was admitted to our surgical ward due to upper gastrointestinal hemorrhage. Upper endoscopy revealed a large ulcerated bleeding mass originating from the lesser curvature. Biopsy revealed tumor cell immunoreactivity positive for CD99, vimentin, and Ki67 (an index of proliferation. These findings were compatible with gastric ES/PNET. The fluorescence in situ hybridization analysis result for the EWSR1 gene rearrangement (11: 22 translocation was positive. The patient refused neoadjuvant treatment and thus underwent an operation during which a mass at the lesser curvature of the stomach was found. The mass was adhering to the pancreatic tail and to the mesentery of the transverse and descending colon. Total gastrectomy, distal pancreatectomy, splenectomy, and left adrenalectomy were done. The patient refused adjuvant treatment. She is free of disease 3 years after surgery.

  1. Primitive Neuroectodermal Tumor (PNET) of the kidney: a case report

    International Nuclear Information System (INIS)

    Pomara, Giorgio; Cappello, Francesco; Cuttano, Maria G; Rappa, Francesca; Morelli, Girolamo; Mancini, Pierantonio; Selli, Cesare

    2004-01-01

    A case of Primitive Neuroectodermal Tumor (PNET) of the kidney in a 27-year-old woman is presented. Few cases are reported in the literature with a variable, nonspecific presentation and an aggressive behaviour. In our case, a radical nephrectomy with lymphadenectomy was performed and there was no residual or recurrent tumour at 24-month follow-up. The surgical specimens were formalin-fixed and paraffin embedded. The sections were stained with routinary H&E. Immunohistochemistry was performed. The immunohistochemical evaluation revealed a diffuse CD99 positivity in the cytoplasm of the neoplastic cells. Pankeratin, cytokeratin AE1/AE3, vimentin, desmin, S100, cromogranin were negative. The clinical presentation and the macroscopic aspect, together with the histological pattern, the cytological characteristic and the cellular immunophenotype addressed the diagnosis towards primary PNET of kidney. Since sometimes it is difficult to discriminate between PNET and Ewing's tumour, we reviewed the difficulties in differential diagnosis. These tumors have a common precursor but the stage of differentiation in which it is blocked is probably different. This could also explain their different biological behaviour and prognosis

  2. Primitive object love in Melanie Klein's thinking; early theoretical influences.

    Science.gov (United States)

    Likierman, M

    1993-04-01

    Melanie Klein's thinking on early object love is pivotal to her vision of development. Yet within her texts it is often enmeshed in complex formulations that obscure its full significance. A greater clarity in viewing Klein's concept of early object love is achieved through tracing some of its historical origins. The author notes that it was inspired by aspects of Ferenczi's theory, hence its similarities with the concept of 'primary love' formulated by another of Ferenczi's analysands, Michael Balint. Ferenczi's thinking on the subject formed part of a broader network of theoretical developments in the history of psychoanalytic ideas. These are shown to have origins in Freud's fluctuations between a 'passive' and a 'genital' characterisation of infantile sexuality. A dialectical tension between these two possibilities, as maintained in the Freudian texts, was partly embodied in the differing outlooks of Klein's two psychoanalysts, Abraham and Ferenczi. The author suggests that it is a mixture of their approaches that partly shaped Klein's thinking on the earliest experiences of love. After outlining these developments the author analyses the nature of early object love as it emerges from Klein's powerful, if intermittent descriptions in the texts. The analysis also tackles a textual ambiguity in Klein's formulations, showing that she explored two kinds of primitive ideal experience without explicitly differentiating them. Such differentiation is important inasmuch as it highlights negative and positive aspects of Kleinian theory at root.

  3. Gallé, une vie au tournant du siècle.

    Directory of Open Access Journals (Sweden)

    Isabelle Debilly

    2004-05-01

    Full Text Available La collection Découvertes de Gallimard propose un nouveau volume dédié à Émile Gallé, le magicien du verre . Il s’agit là déjà, du 446 e numéro de cette collection destinée à l’origine aux adolescents. Ce principe a été en grande partie abandonné, même si l’on trouve encore les volumes de cette collection dans les rayons « jeunesse » de certaines librairies. Le grand public a depuis longtemps plébiscité ces ouvrages qui présentent une riche iconographie, ...

  4. Les manuscrits arabes du Yémen (VIe-IXe/XIIe-XVe siècles

    Directory of Open Access Journals (Sweden)

    Arianna d’Ottone

    2003-09-01

    Full Text Available Les études jusqu’ici consacrées aux manuscrits, et aux manuscrits arabes en particulier, ont tantôt privilégié l’aspect philologique, littéraire ou documentaire des textes, tantôt leur aspect artistique et leur appareil décoratif. Bref, le contenu des manuscrits a accaparé l’attention des chercheurs qui, engagés dans l’étude des textes ou celle de l’ornementation, ont presque complètement négligé la matérialité du livre.Mais chaque manuscrit a, pour ainsi dire, une âme double, étant à la fois...

  5. La métaphore, une question de vie ou de mort ?

    OpenAIRE

    Landheer, Ronald

    2007-01-01

    1. Introduction : métaphore et ambiguïtéEst-ce qu’il y a une relation essentielle entre la métaphore et l’ambiguïté ? Voilà la principale question à laquelle nous tâcherons de donner une réponse dans ce travail. Et du même coup nous nous proposons de re­mettre en cause a) la définition à notre sens un peu trop restrictive de l’ambiguïté donnée par Catherine Fuchs (1996) et b) la pertinence de la distinction traditionnelle entre métaphore vive et métaphore morte. 1.1. L’ambiguïtéEssayons d’abo...

  6. Keragaman dan Peran Biologi Arthrophoda pada Sawah Irigasi dan Tegalan

    OpenAIRE

    Suwarno, Suwarno

    2016-01-01

    Penelitian ini bertujuan untuk mengetahui keragaman arthropoda dan peran biologinya pada tanah sawah irigasi dan tegalan. Penelitian ini dilaksanakan di daerah persawahan di daerah Sragen pada bulan Maret – Mei 2016. Metode Penelitian dengan menggunakan pitfall trap atau perangkap jebakan yang diletakkan area persawahan dan tegalan. Teknik pengumpulan data dengan menggunakan purposive sampling. Sampel arthropoda yang diperoleh diidentifikasi dan dianalisis di Laboratorium pendidikan Biologi. ...

  7. Fahrstuhlfahrten und Einstiegsschwierigkeiten. Erschließungstechniken in Georges Perecs »La Vie mode d’emploi«

    Directory of Open Access Journals (Sweden)

    Johanne Mohs

    2014-05-01

    Full Text Available Der Artikel ist eine produktionsästhetische Untersuchung zu Einstiegsschwierigkeiten in literarische Schreibprozesse und ihre Auflösung mithilfe räumlicher und sprachspielerischer Erschließungstechniken. Als Beispiel dient mir die Poetik des OuLiPo (»Ouvroir de littérature potentielle« und hier insbesondere (die Genese von Georges Perecs Roman »La vie mode d’emploi«. Genauer wird daran gezeigt, wie Perec eine blockierte Fahrstuhlfahrt als metaphorische Referenz auf seine anfängliche Schreibhemmung in den Roman einfügt und wie diese Referenz als Kommentar zur Erzählbarkeit komplexer Raum-Zeit-Gefüge im Gesellschaftsroman des 20. Jahrhunderts, insbesondere zu Marcel Prousts »Recherche«, verstanden werden kann.

  8. Pirminio akcijų viešojo siūlymo sandorių efektyvumo analizė

    OpenAIRE

    Cibulskienė, Diana; Grigaliūnienė, Žana; Petrauskienė, Daiva

    2009-01-01

    Nuo XX a. 9-ojo dešimtmečio vis labiau populiarėjančiu kapitalo pritraukimo būdu tampa įmonių išėjimas į atvirą vertybinių popierių rinką. Sėkmingai įvykdytas pirminis akcijų viešas siūlymas (angl. IPO – Initial Public Offering) (toliau – IPO) vertybinių popierių biržose garantuoja emitentams dideles papildomo nuosavo kapitalo įplaukas, taip pat suteikia ir kai kuriuos kitus privalumus: įmonės gali tikėtis stabilaus jų akcijų kainų kilimo, geresnių kreditavimo sąlygų, strateginių sutarčių pas...

  9. Evaluasi Sifat Morpologi dan Teknologi Pengolahan pada Gabah dan Beras

    OpenAIRE

    Santosa, Susilo

    2017-01-01

    Penelitian evaluasi dan beras terhadap mutu dan jumlah hasil ditekankan pada lr36 , lr38 dan Cisadane. Penelitian dilakukan di laboratorium Balai Penelitian Tanaman Pangan Karawang. Hasil studi menunjukkan diantara ketiga varitas, Cisadane mempunyai ukuran dimensi butiran yang lebih besar daripada Ir36 dan Ir38. Di antara ketiga varitas, persen kulit sekam yang tertinggi didapat 23,57 % pada lr38 diikuti 22,32% pada Ir36 dan 19,5% pada Cisadane. Persen beras pecah kulit tertinggi diperoleh pa...

  10. Evaluasi Sifat Morpologi Dan Teknologi Pengolahan Pada Gabah Dan Beras

    OpenAIRE

    Santosa, Susilo

    1982-01-01

    Penelitian evaluasi dan beras terhadap mutu dan jumlah hasil ditekankan pada lr36 , lr38 dan Cisadane. Penelitian dilakukan di laboratorium Balai Penelitian Tanaman Pangan Karawang. Hasil studi menunjukkan diantara ketiga varitas, Cisadane mempunyai ukuran dimensi butiran yang lebih besar daripada Ir36 dan Ir38. Di antara ketiga varitas, persen kulit sekam yang tertinggi didapat 23,57 % pada lr38 diikuti 22,32% pada Ir36 dan 19,5% pada Cisadane. Persen beras pecah kulit tertinggi diperoleh pa...

  11. Safety evaluation of an acai-fortified fruit and berry functional juice beverage (MonaVie Active®)

    International Nuclear Information System (INIS)

    Schauss, Alexander G.; Clewell, Amy; Balogh, Lajos; Szakonyi, Ilona Pasics; Financsek, Istvan; Horvath, Janos; Thuroczy, Julianna; Beres, Erzsebet; Vertesi, Adel; Hirka, Gabor

    2010-01-01

    The safety of an acai (Euterpe oleracea Mart.) pulp enriched fruit and berry juice, MonaVie Active ® , fortified with the functional ingredient, glucosamine, was studied. The beverage was found not to be mutagenic, clastogenic, cytotoxic, or genotoxic, as determined by the bacterial reverse mutation assay, chromosomal aberration assay, mouse micronucleus assay, and mammalian cell gene mutation (L5178Y) assay. The single dose LD50 based on a 14-day acute oral toxicity study is greater than 20,000 mg/kg bw, the highest dose tested. In a repeat dose 90-day oral subchronic toxicity study by gavage, 220 animals were randomly assigned to a control group, an untreated group, or one of three experimental groups (10, 20 and 40 g/kg bw). No treatment-related significant changes in body weight, food and water consumption, ophthalmology, organ weights, urinanalysis, hematological and clinical chemistry, or gross pathology, were observed in surviving animals compared to the control groups. Three animals died midway through the observation period (male, 20 g/kg bw/day; male 40 g/kg bw/day; and, female, 10 g/kg bw/day). These animals died without preceding clinical symptoms, histopathological lesions, or evidence of injury to tissue or organs except for signs of suffocation/aspiration congestion, which was concluded to be due to problems with the gavage administration of the fluid test article, and not due to the test article itself. The NOEAL was determined to be 40 g/kg bw/day for male and female rats, which was the highest dose tested. Phylloquinone (vitamin K1) content averaged 21.7 μg/100 g, comparable to amounts found in iceberg lettuce. In conclusion, the results provide additional experimental evidence that MonaVie Active ® juice is non-toxic.

  12. Enhanced Matrix Power Function for Cryptographic Primitive Construction

    Directory of Open Access Journals (Sweden)

    Eligijus Sakalauskas

    2018-02-01

    Full Text Available A new enhanced matrix power function (MPF is presented for the construction of cryptographic primitives. According to the definition in previously published papers, an MPF is an action of two matrices powering some base matrix on the left and right. The MPF inversion equations, corresponding to the MPF problem, are derived and have some structural similarity with classical multivariate quadratic (MQ problem equations. Unlike the MQ problem, the MPF problem seems to be more complicated, since its equations are not defined over the field, but are represented as left–right action of two matrices defined over the infinite near-semiring on the matrix defined over the certain infinite, additive, noncommuting semigroup. The main results are the following: (1 the proposition of infinite, nonsymmetric, and noncommuting algebraic structures for the construction of the enhanced MPF, satisfying associativity conditions, which are necessary for cryptographic applications; (2 the proof that MPF inversion is polynomially equivalent to the solution of a certain kind of generalized multivariate quadratic (MQ problem which can be reckoned as hard; (3 the estimation of the effectiveness of direct MPF value computation; and (4 the presentation of preliminary security analysis, the determination of the security parameter, and specification of its secure value. These results allow us to make a conjecture that enhanced MPF can be a candidate one-way function (OWF, since the effective (polynomial-time inversion algorithm for it is not yet known. An example of the application of the proposed MPF for the Key Agreement Protocol (KAP is presented. Since the direct MPF value is computed effectively, the proposed MPF is suitable for the realization of cryptographic protocols in devices with restricted computation resources.

  13. Isotopic and chemical variation of organic nanoglobules in primitive meteorites

    Science.gov (United States)

    de Gregorio, Bradley T.; Stroud, Rhonda M.; Nittler, Larry R.; Alexander, Conel M. O'd.; Bassim, Nabil D.; Cody, George D.; Kilcoyne, A. L. David; Sandford, Scott A.; Milam, Stefanie N.; Nuevo, Michel; Zega, Thomas J.

    2013-05-01

    Organic nanoglobules are microscopic spherical carbon-rich objects present in chondritic meteorites and other astromaterials. We performed a survey of the morphology, organic functional chemistry, and isotopic composition of 184 nanoglobules in insoluble organic matter (IOM) residues from seven primitive carbonaceous chondrites. Hollow and solid nanoglobules occur in each IOM residue, as well as globules with unusual shapes and structures. Most nanoglobules have an organic functional chemistry similar to, but slightly more carboxyl-rich than, the surrounding IOM, while a subset of nanoglobules have a distinct, highly aromatic functionality. The range of nanoglobule N isotopic compositions was similar to that of nonglobular 15N-rich hotspots in each IOM residue, but nanoglobules account for only about one third of the total 15N-rich hotspots in each sample. Furthermore, many nanoglobules in each residue contained no 15N enrichment above that of bulk IOM. No morphological indicators were found to robustly distinguish the highly aromatic nanoglobules from those that have a more IOM-like functional chemistry, or to distinguish 15N-rich nanoglobules from those that are isotopically normal. The relative abundance of aromatic nanoglobules was lower, and nanoglobule diameters were greater, in more altered meteorites, suggesting the creation/modification of IOM-like nanoglobules during parent-body processing. However, 15N-rich nanoglobules, including many with highly aromatic functional chemistry, likely reflect preaccretionary isotopic fractionation in cold molecular cloud or protostellar environments. These data indicate that no single formation mechanism can explain all of the observed characteristics of nanoglobules, and their properties are likely a result of multiple processes occurring in a variety of environments.

  14. Deep Interior: Probing the Structure of Primitive Bodies

    Science.gov (United States)

    Asphaug, Erik; Scheeres, Daniel; Safaeinili, Ali

    Deep Interior is a mature Discovery-class mission concept focused on probing the geophysical behavior of primitive bodies, from the mechanics of their exterior materials to the structures of their interiors. Its theme is to discover how small bodies work - to learn the natural origin and evolution of asteroids, comets and other primitive bodies through radar reflection tomography and through detailed observations of the local and global effects of cratering. Learning the structure and mechanical response of asteroids and comets is also a precursor to resource utilization and hazardous asteroid mitigation. Overall the mission is aligned with NASA strategic sub-goal 3C, to advance scientific knowledge of the origin and history of the solar system ... and the hazards and resources present as humans explore space. Deep Interior deploys no complex landers or sub-spacecraft; the scientific instruments are a radar and a camera. A blast cratering experiments triggered by grenades leads to a low cost seismological investigation which complements the radar investigation. A desired addition is an imaging spectrometer. The science instruments are high heritage, as are the navigation techniques for orbiting and station-keeping. The mission conducts the following investigations at one or more asteroids: Radar Reflection Tomography (RRT). The first science phase is to operate a penetrating radar during each several-month rendezvous, deployed in reflection mode in the manner of ongoing radar investigations underway by Mars Express, Mars Reconnaissance Orbiter, and Kaguya. The RRT technique (Safaeinili et al., MAPS 2002) is analogous to performing a "CAT scan" from orbit: closely sampled radar echoes are processed to yield volumetric maps of mechanical and compositional boundaries, and to measure interior dielectric properties. Deep Interior utilizes a polar orbit (or station keeping) while the asteroid spins underneath; the result is to "peel the apple" with thousands of unique

  15. MRI diagnosis of supratentorial and intraspinal primitive neuroectodermal tumors

    International Nuclear Information System (INIS)

    Liu Meili; Cui Shimin; Han Tong; Li Tao; Liu Li; Lei Jing; Qing Jingxi; Yan Xiaoling; Kong Fanming

    2004-01-01

    Objective: To analyze the MRI features of supratentorial and intraspinal primitive neuroectodermal tumors (PNET) and improve the diagnostic accuracy. Methods: MRI manifestations of 9 PNET diagnosed via operation and pathological examination were analyzed. There were 6 men and 3 women, and the mean age was 32.6 years. In all 9 cases, conventional plain MR scans were performed, including spin echo (SE), fast spin echo (FSE), and fluid attenuated inversion recovery (FLAIR) sequences. Diffusion weighted images (DWIs) and postcontrast MR images were obtained in 2 and 4 cases, respectively. Results: The 8 cases with supratentorial lesions included fronto-temporal lesion in 2 cases, occipital lesion in 2 cases, fronto-parietal lobe, parietal lobe, frontal lobe lesion in each 1 case, and posterior part of third ventricle in 1 case, and the lesion located in the thoracic spinal canal in 1 case. All the lesions were quite large in volume, and the largest one was 6.0 cm x 6.9 cm x 4.9 cm. Except for the round-like lesion in the posterior part of third ventricle, the other 7 supratentorial lesions were irregular in shape, well demarked, and often with solid consistency and slight peritumoral edema. The lesions demonstrated long T 1 and long or slightly long T 2 signal intensity in 4 cases, mixed signal intensity on T 1 WI, T 2 WI, and FLAIR images in 4 cases. Small cystic degeneration could be seen in 2 cases, hemorrhage in 4 cases, and flow void vessels in 3 cases. 3 cases demonstrated irregular ring-like enhancement and ependymal dissemination. The lesion in the thoracic canal demonstrated as a slightly enhanced soft tissue mass with adjacent bony destruction and muscle infiltration. Conclusion: MR findings of PNET are rather characteristic, but the final diagnosis relies on pathology

  16. Exploring Hardware-Based Primitives to Enhance Parallel Security Monitoring in a Novel Computing Architecture

    National Research Council Canada - National Science Library

    Mott, Stephen

    2007-01-01

    This research explores how hardware-based primitives can be implemented to perform security-related monitoring in real-time, offer better security, and increase performance compared to software-based approaches...

  17. The genomes of two key bumblebee species with primitive eusocial organization

    DEFF Research Database (Denmark)

    Sadd, Ben M.; Barribeau, Seth M.; Bloch, Guy

    2015-01-01

    BACKGROUND: The shift from solitary to social behavior is one of the major evolutionary transitions. Primitively eusocial bumblebees are uniquely placed to illuminate the evolution of highly eusocial insect societies. Bumblebees are also invaluable natural and agricultural pollinators, and there ...

  18. From primitive identity to the non-individuality of quantum objects

    Science.gov (United States)

    Arenhart, Jonas Becker; Krause, Décio

    2014-05-01

    We consider the claim by Dorato and Morganti (Grades of individuality. A pluralistic view of identity in quantum mechanics and in the sciences. Philosophical Studies, 163 (2013) 591-610) that primitive individuality should be attributed to the entities dealt with by non-relativistic quantum mechanics. There are two central ingredients in the proposal: (i) in the case of non-relativistic quantum mechanics, individuality should be taken as a primitive notion and (ii) primitive individuality is naturalistically acceptable. We argue that, strictly understood, naturalism faces difficulties in helping to provide a theory with a unique principle of individuation. We also hold that even when taken in a loose sense, naturalism does not provide any sense in which one could hold that quantum mechanics endorses primitive individuality over non-individuality. Rather, we argue that non-individuality should be preferred based on the grounds that such a view fits better the claims of the theory.

  19. Le vaudeville des chants patriotiques dans La fille soldat de Desfontaines

    Directory of Open Access Journals (Sweden)

    Tomoko Nakayama

    2017-12-01

    Full Text Available Dans la première moitié du dix-huitième siècle, les vaudevilles servaient surtout à un effet comique. Mais l’époque révolutionnaire donne un nouvel essor aux spectacles à vaudevilles. On peut s’interroger dès lors sur les raisons de cette affinité entre le contexte révolutionnaire et les vaudevilles qui revient au goût du jour. Nous allons, pour ce faire, tenter d’analyser les effets produits par des vaudevilles tirés de La fille soldat (1794 de Desfontaines (1733-1825. La particularité des vaudevilles de cette pièce réside dans l’emploi des chants révolutionnaires. La musique et les paroles de ces chants font directement écho à la guerre appartenant à la réalité des spectateurs ou bien, à la scène détachée du contexte de l’air original et employés de manière autonome. Les vaudevilles tirés des chants révolutionnaires attestent de la pénétration des musiques patriotiques dans tous les secteurs de la vie culturelle, même sur les tréteaux dévolus au pur divertissement.

  20. Nomadisme et exil dans l’œuvre d’Abdourahman A. Waberi

    Directory of Open Access Journals (Sweden)

    Alice Botelho Peixoto

    2017-10-01

    Full Text Available Ce travail d’analyse littéraire prétend, à travers les thèmes du nomadisme et de l’exil, percer un chemin d’interprétation dans l’œuvre de l’écrivain contemporain Abdourahman A. Waberi. La première partie tente de comprendre la représentation qui est faite du nomadisme comme un mode de vie traditionnel de la Corne de l’Afrique, dont Djibouti est une métonymie. Ensuite, il s’agit de comprendre l’exil comme un phénomène qui consiste dans l’abandon de la terre natale vers l’ailleurs. Finalement, l’auteur met en scène un genre de migrant cosmopolite. En outre, certaines questions de style ou de forme sont également abordées dans ce travail, comme la prose poétique ou l’expression d’une voix narrative unique qui relie les œuvres étudiées.

  1. Retinoic acid signaling plays a restrictive role in zebrafish primitive myelopoiesis.

    Directory of Open Access Journals (Sweden)

    Dong Liang

    Full Text Available Retinoic acid (RA is known to regulate definitive myelopoiesis but its role in vertebrate primitive myelopoiesis remains unclear. Here we report that zebrafish primitive myelopoiesis is restricted by RA in a dose dependent manner mainly before 11 hpf (hours post fertilization when anterior hemangioblasts are initiated to form. RA treatment significantly reduces expressions of anterior hemangioblast markers scl, lmo2, gata2 and etsrp in the rostral end of ALPM (anterior lateral plate mesoderm of the embryos. The result indicates that RA restricts primitive myelopoiesis by suppressing formation of anterior hemangioblasts. Analyses of ALPM formation suggest that the defective primitive myelopoiesis resulting from RA treatment before late gastrulation may be secondary to global loss of cells for ALPM fate whereas the developmental defect resulting from RA treatment during 10-11 hpf should be due to ALPM patterning shift. Overexpressions of scl and lmo2 partially rescue the block of primitive myelopoiesis in the embryos treated with 250 nM RA during 10-11 hpf, suggesting RA acts upstream of scl to control primitive myelopoiesis. However, the RA treatment blocks the increased primitive myelopoiesis caused by overexpressing gata4/6 whereas the abolished primitive myelopoiesis in gata4/5/6 depleted embryos is well rescued by 4-diethylamino-benzaldehyde, a retinal dehydrogenase inhibitor, or partially rescued by knocking down aldh1a2, the major retinal dehydrogenase gene that is responsible for RA synthesis during early development. Consistently, overexpressing gata4/6 inhibits aldh1a2 expression whereas depleting gata4/5/6 increases aldh1a2 expression. The results reveal that RA signaling acts downstream of gata4/5/6 to control primitive myelopoiesis. But, 4-diethylamino-benzaldehyde fails to rescue the defective primitive myelopoiesis in either cloche embryos or lycat morphants. Taken together, our results demonstrate that RA signaling restricts

  2. Une tumeur neuroectodermique primitive périphérique à localisation ...

    African Journals Online (AJOL)

    Les tumeurs neuro-ectodermiques primitives ou sarcome d'Ewing sont classiquement des néoplasmes se développant aux dépends des tissus mous et des os. Les tumeurs neuro-ectodermiques primitives gastriques (pPNETs) sont extrêmement rares. Nous nous proposons, à travers le cas d'un patient, opéré pour une ...

  3. Driving Style Analysis Using Primitive Driving Patterns With Bayesian Nonparametric Approaches

    OpenAIRE

    Wang, Wenshuo; Xi, Junqiang; Zhao, Ding

    2017-01-01

    Analysis and recognition of driving styles are profoundly important to intelligent transportation and vehicle calibration. This paper presents a novel driving style analysis framework using the primitive driving patterns learned from naturalistic driving data. In order to achieve this, first, a Bayesian nonparametric learning method based on a hidden semi-Markov model (HSMM) is introduced to extract primitive driving patterns from time series driving data without prior knowledge of the number...

  4. A mutli-technique search for the most primitive CO chondrites

    Science.gov (United States)

    Alexander, C. M. O'D.; Greenwood, R. C.; Bowden, R.; Gibson, J. M.; Howard, K. T.; Franchi, I. A.

    2018-01-01

    As part of a study to identify the most primitive COs and to look for weakly altered CMs amongst the COs, we have conducted a multi-technique study of 16 Antarctic meteorites that had been classified as primitive COs. For this study, we have determined: (1) the bulk H, C and N abundances and isotopes, (2) bulk O isotopic compositions, (3) bulk modal mineralogies, and (4) for some selected samples the abundances and compositions of their insoluble organic matter (IOM). Two of the 16 meteorites do appear to be CMs - BUC 10943 seems to be a fairly typical CM, while MIL 090073 has probably been heated. Of the COs, DOM 08006 appears to be the most primitive CO identified to date and is quite distinct from the other members of its pairing group. The other COs fall into two groups that are less primitive than DOM 08006 and ALH 77307, the previously most primitive CO. The first group is composed of members of the DOM 08004 pairing group, except DOM 08006. The second group is composed of meteorites belonging to the MIL 03377 and MIL 07099 pairing groups. These two pairing groups should probably be combined. There is a dichotomy in the bulk O isotopes between the primitive (all Antarctic finds) and the more metamorphosed COs (mostly falls). This dichotomy can only partly be explained by the terrestrial weathering experienced by the primitive Antarctic samples. It seems that the more equilibrated samples interacted to a greater extent with 16O-poor material, probably water, than the more primitive meteorites.

  5. Léon Bardalès: Sa vie et son œuvre

    Directory of Open Access Journals (Sweden)

    Ilias Taxidis

    2011-07-01

    Full Text Available Cette étude comprend la présentation et l’édition critique de deux lettres et six poèmes de Léon Bardalès qui fut l’un des dignitaires impériaux byzantins de la fin du XIIIe et du début du XIVe siècle. Pour l’occasion, toutes les données concernant l’auteur et son activité politique et littéraire sont réévaluées conformément aux informations fournies par les lettres que Bardalès a reçues d’épistoliers connus de son époque, comme Maxime Planude, Nicéphore Choumnos et Nicéphore Grégoras. Dans l’édition, les erreurs et fautes d’inattention des éditeurs précédents sont corrigées, et un apparat des sources est ajouté.

  6. Spatiotemporal mechanical variation reveals critical role for rho kinase during primitive streak morphogenesis.

    Science.gov (United States)

    Henkels, Julia; Oh, Jaeho; Xu, Wenwei; Owen, Drew; Sulchek, Todd; Zamir, Evan

    2013-02-01

    Large-scale morphogenetic movements during early embryo development are driven by complex changes in biochemical and biophysical factors. Current models for amniote primitive streak morphogenesis and gastrulation take into account numerous genetic pathways but largely ignore the role of mechanical forces. Here, we used atomic force microscopy (AFM) to obtain for the first time precise biomechanical properties of the early avian embryo. Our data reveal that the primitive streak is significantly stiffer than neighboring regions of the epiblast, and that it is stiffer than the pre-primitive streak epiblast. To test our hypothesis that these changes in mechanical properties are due to a localized increase of actomyosin contractility, we inhibited actomyosin contractility via the Rho kinase (ROCK) pathway using the small-molecule inhibitor Y-27632. Our results using several different assays show the following: (1) primitive streak formation was blocked; (2) the time-dependent increase in primitive streak stiffness was abolished; and (3) convergence of epiblast cells to the midline was inhibited. Taken together, our data suggest that actomyosin contractility is necessary for primitive streak morphogenesis, and specifically, ROCK plays a critical role. To better understand the underlying mechanisms of this fundamental process, future models should account for the findings presented in this study.

  7. Evaluating structural pattern recognition for handwritten math via primitive label graphs

    Science.gov (United States)

    Zanibbi, Richard; Mouchère, Harold; Viard-Gaudin, Christian

    2013-01-01

    Currently, structural pattern recognizer evaluations compare graphs of detected structure to target structures (i.e. ground truth) using recognition rates, recall and precision for object segmentation, classification and relationships. In document recognition, these target objects (e.g. symbols) are frequently comprised of multiple primitives (e.g. connected components, or strokes for online handwritten data), but current metrics do not characterize errors at the primitive level, from which object-level structure is obtained. Primitive label graphs are directed graphs defined over primitives and primitive pairs. We define new metrics obtained by Hamming distances over label graphs, which allow classification, segmentation and parsing errors to be characterized separately, or using a single measure. Recall and precision for detected objects may also be computed directly from label graphs. We illustrate the new metrics by comparing a new primitive-level evaluation to the symbol-level evaluation performed for the CROHME 2012 handwritten math recognition competition. A Python-based set of utilities for evaluating, visualizing and translating label graphs is publicly available.

  8. In search of a primitive ontology for relativistic quantum field theory

    Energy Technology Data Exchange (ETDEWEB)

    Lam, Vincent [University of Lausanne, CH-1015 Lausanne (Switzerland)

    2014-07-01

    There is a recently much discussed approach to the ontology of quantum mechanics according to which the theory is ultimately about entities in 3-dimensional space and their temporal evolution. Such an ontology postulating from the start matter localized in usual physical space or spacetime, by contrast to an abstract high-dimensional space such as the configuration space of wave function realism, is called primitive ontology in the recent literature on the topic and finds its roots in Bell's notion of local beables. The main motivation for a primitive ontology lies in its explanatory power: the primitive ontology allows for a direct account of the behaviour and properties of familiar macroscopic objects. In this context, it is natural to look for a primitive ontology for relativistic quantum field theory (RQFT). The aim of this talk is to critically discuss this interpretative move within RQFT, in particular with respect to the foundational issue of the existence of unitarily inequivalent representations. Indeed the proposed primitive ontologies for RQFT rely either on a Fock space representation or a wave functional representation, which are strictly speaking only unambiguously available for free systems in flat spacetime. As a consequence, it is argued that these primitive ontologies constitute only effective ontologies and are hardly satisfying as a fundamental ontology for RQFT.

  9. Modification de la surface du cuivre par implantation ionique par source plasma (IISP): applications à l’érosion cathodique dans les systèmes à arcs

    OpenAIRE

    Roy, F

    2006-01-01

    L’érosion cathodique est un phénomène bien connu qui limite la durée de vie de l’électrode négative dans les systèmes à arcs. Dans le présent mémoire, nous avons tenté de voir si la formation de précipités nanométriques d’oxyde de cuivre pouvait réduire l’érosion cathodique nécessaire au maintien de l’arc en mode thermo-champ (T-F). Les dits précipités ont été produits par implantation ionique par source plasma (IISP). Avec l’aide de techniques de caractérisation telle que la microscopie à fo...

  10. Monde « réel » et monde imaginaire. Le rôle de la bande son dans Eraserhead, de David Lynch

    OpenAIRE

    Bobée, Emmanuelle

    2012-01-01

    Par définition, un film de fiction dépeint un monde imaginaire dans lequel évoluent – le plus souvent – des personnages, que le spectateur feint de considérer comme des êtres de chair et de sang, en vertu de ce que l’on nomme le « pacte de fiction ». Au sein de ce monde imaginaire ou monde diégétique, comment le spectateur peut-il faire la distinction entre ce qui est « réel », du point de vue des personnages, et ce qui ne l’est pas ? En effet, contrairement à ce qui se produit dans la vie ré...

  11. Les yeux de la nation. Photographie amateur et société dans l’Allemagne de Guillaume II

    Directory of Open Access Journals (Sweden)

    Christian Joschke

    2009-12-01

    Full Text Available 1880-1910 : trois décennies au cours desquelles les images, et singulièrement les images photographiques, prirent une importance capitale dans la vie publique et qui virent naître dans la bourgeoisie libérale allemande un projet ambitieux : elle a en effet investi la société civile de la fonction de construire une culture visuelle éclairée sur les fondements d’une structure associative, de ses pratiques délibératives et de son idéal éducatif. Cette bourgeoisie encadra l’essor de la photograph...

  12. The Character as Text in Philip Massinger’s A New Way to Pay Old Debts Le Personnage comme texte dans A New Way to Pay Old Debts de Philip Massinger

    Directory of Open Access Journals (Sweden)

    Wendy Ribeyrol

    2009-06-01

    Full Text Available Dans A New Way to Pay Old Debts de Philip Massinger la réputation est perçue comme une feuille blanche sur laquelle le personnage doit écrire le récit de sa vie. L’idée de la vie d’un homme comme livre ou comme feuille de papier est fort ancienne, elle figure aussi bien dans la Bible que dans les livres d’emblèmes des XVIe et XVIIe siècles. Au moment de la mort, l’homme laisse ainsi à la postérité un texte édifiant dont il aura été l’auteur (auctor. Cet article démontre  qu’il faut néanmoins faire une distinction entre l’homme, qui prend plume et rédige son propre texte, et la femme qui doit attendre passivement qu’un autre compose le sien.

  13. Des livres dans la tête : la bibliothèque imaginaire chez Bradbury, Canetti et Joyce

    Directory of Open Access Journals (Sweden)

    Tatjana Barazon

    2008-10-01

    Full Text Available Le livre est un symbole de la liberté créatrice de l’homme et de sa faculté d’exprimer ses émotions. Quand le livre est interdit et même brûlé, cette liberté est mise en danger. L’homme se perd dans le bonheur facile, et finit par s’anéantir. Le livre est considéré comme le plus grand obstacle au bonheur dans une société qui recherche l’absence de douleur. Ray Bradbury évoque une évolution effrayante dans Fahrenheit 451, il dépeint la destruction des livres par le feu. L’homme doit détruire cette société pour retrouver son côté sombre et le droit au livre. Mais ce n’est pas seulement la perte de la liberté créatrice que l’homme cherche à reconquérir, c’est le devoir de mémoire dans les livres. L’isolement que constitue le livre et le rapport à lui reste cependant un danger quand la lecture devient enfermement. Dans Auto-da-fé d’Elias Canetti, c’est un savant qui cherche à remplacer la vie par les livres. Il finit aussi par se détruire parce qu’il ne cherche plus le contact de l’autre. Enfin, c’est Ulysse de James Joyce qui constitue une véritable bibliothèque imaginaire par l’existence d’un seul livre dans la tête du lecteur. Si un seul livre peut concentrer en lui toute lecture possible, le lecteur est enfin libéré de l’immobilité forcée de la lecture et peut aller à la rencontre de l’autre et de la vie, enfin libéré de cette activité qui l’enferme pour la transformer en flux de la conscience, il devient créateur du déploiement d’une véritable activité vitale et libératrice.

  14. Improved method for lifetime measurements; Methode perfectionnee de mesure de la duree de vie; Usovershenstvovannyj metod izmereniya vremeni zhizni; Metodo perfeccionado para medir la vida media de los estados de excitacion

    Energy Technology Data Exchange (ETDEWEB)

    Weinzierl, P; Bartl, W [Oesterreichische Studiengesellschaft fuer Atomenergie, Seibersdorf (Austria)

    1962-04-15

    The measurement of the lifetime of excited states of nuclei is mostly based on the measurement of the delay of a {gamma}-ray (II) in respect to another {gamma}-ray (I) or a {beta}-particle. Organic scintillators allow the best time resolution for the measurement of this decay time, but for complicated decay schemes the identification of {gamma}-energy is important and best achieved by NaI(Tl) scintillators. To combine the merits of both detectors the {gamma}-ray (II) is at first scattered in an organic crystal (stilbene) and the scattered quantum is detected in a Nal(Tl) crystal. In order to allow large acceptance angles between the two scintillators, the measurement of the {gamma}-energy is achieved after adding the pulse heights of both scintillation pulses. To allow a reliable function of the adding unit the pulses from the organic crystal pass first through a gate circuit which is triggered by coincidence between the two scintillators. The pulse spectrum from the adding unit is fed to a single-channel analyser for energy selection. {gamma}-ray (I) is detected in another organic crystal. Fast pulses from both organic scintillators go to a time-to-pulse-height converter and multichannel analyser. This analyser is gated by a slow coincidence between the pulse-height discriminators. (author) [French] La mesure de la duree de vie des etats excites des noyaux repose essentiellement sur celle du retard d'un rayon gamma (II) par rapport a un autre rayon gamma (I) ou a une particule beta. Les scintillateurs organiques permettent de mesurer cette duree de vie avec la meilleure resolution en temps; toutefois, pour les processus des excitations complexes, il est important de determiner l'energie gamma; les scintillateurs a NaI(Tl) sont les plus indiques a cette fin. Pour combiner les avantages de ces deux types de detecteurs, les rayons gamma (II) sont d'abord diffuses dans un cristal organique (stilbene); le quantum emergeant est ensuite detecte dans un cristal de Nal

  15. Liever kraanwater dan bronwater

    NARCIS (Netherlands)

    Kole, A.P.W.

    2011-01-01

    Een test in het Restaurant van de Toekomst van de invloed van CO2-labels op het aankoopgedrag van consumenten, heeft nog geen duidelijk beeld opgeleverd. Wel pakten mensen vaker kraanwater dan bronwater.

  16. Dan Performer Mei Lanfang

    DEFF Research Database (Denmark)

    Risum, Janne

    2010-01-01

    The convention of performing female characters (dan characters) in Beijing opera, as practised by its most prominent male performer of female characters Mei Lanfang, and its and his cultural context and aesthetic aim...

  17. le biofilmen industrielaitière:caractérisation facteur de dévellopement et élimination cas du biofilm de bacillus,cereus dans quelques laiteries de la région de Tlemcen

    OpenAIRE

    Malek, fadila

    2013-01-01

    En industrie agroalimentaire, le développement des biofilms sur les surfaces en contact avec les aliments peut-être à l’origine de la contamination des produits transformés. Ce qui conduit à la réduction de leur durée de vie et à des risques potentiels pour la santé du consommateur. La qualité précaire du lait pasteurisé produit à l’échelle nationale illustre bien cette situation. L’évaluation de la microflore du biofilm formé à la surface des équipements laitiers dans quelques laiteries d...

  18. Influence des melanges complexes organiques sur le sort des dioxines et furanes: Implications dans le developpement de facteurs de caracterisation en analyse du cycle de vie

    Science.gov (United States)

    Taing, Eric

    The environmental fate of dioxins and furans, or polychlorodibenzo-p-dioxins and -furans (PCDD/Fs), leaching from wood poles treated with pentachlorophenol (PCP) oil is modified by the presence of oil. Interactions between co-contaminants, which also exist for other pollutants within the mixtures, were shown in the specific context of risk analysis, but have never been taken into account for the generic context of life cycle assessment (LCA). This decision-making tool relies on characterization factors (CF) to estimate the potential impacts of an emitted amount of a pollutant in different impact categories such as aquatic ecotoxicity and human toxicity. For these two impact categories, CFs are calculated from a cause-effect chain that models the environmental fate, exposure and effects of the pollutant (represented by a matrix of fate FF, exposure XF and effect EF, respectively), meaning that a modification of PCDD/Fs fate induces a change in PCDD/Fs CFs. The research question is therefore as follows: In life cycle impact assessment (LCIA), to what extent would the potential impacts of PCDD/Fs on aquatic ecotoxicity and human toxicity change when taking into account the influence of a complex organic mixture on PCDD/Fs fate?. Thus, the main objective is to develop CFs of PCDD/Fs when their fate is influenced by PCP oil and compare them with the CFs of PCDD/Fs without oil for the aquatic ecotoxicity and human toxicity impact categories. A mathematic approach is established to determine the new environmental distribution of PCDD/Fs in the presence of oil and a new FF' matrix is calculated from this new distribution to obtain new CFs' integrating oil influence. FF' and CF' are then compared to FF and CF of PCDD/Fs without the oil. Finally, potential (eco)toxic impacts of the PCDD/F Canadian emissions are calculated with the new CFs' of PCDD/Fs in presence of oil. By only focusing on the results for an emission into air, freshwater and natural soil on a continental scale, the overall elimination fractions of 2,3,7,8-TCDD changed significantly. For the three emissions, organic fractions increased the overall elimination fraction of 2,3,7,8-TCDD into the continental air compartment, induced by a higher volatility of organic fractions than 2,3,7,8-TCDD: for an emission into continental air, organic fractions increased the overall elimination fraction of 2,3,7,8-TCDD in the continental air from 29% to 49% at most. For an emission into continental freshwater, 2,3,7,8-TCDD fate was mainly influenced by two groups of organic fractions: the lightest ones that volatilize into continental air (overall elimination fraction of 2,3,7,8-TCDD increasing from 2% to 35%) and the heaviest ones that are removed by sedimentation (DTCDD,fwC,fwC from 87% up to 96%). Therefore, an approach has been proposed to represent the carrier behaviour of the oil for PCDD/Fs. PCDD/F potential impacts in aquatic ecotoxicity and human toxicity change in a range up to two orders of magnitude depending on the emitting compartment (except for the seawater and ocean compartments). As 2,3,7,8-TCDD is one of the most toxic pollutant, this changing is significant in LCA. To assess the validity of the model's result, it is recommended to carry out laboratory experiments on the PCDD/F volatilization with oil. In addition, it could be interesting to integrate the influence of PCP on PCDD/Fs fate and, more broadly, the influence of all cocontaminants on PCDD/Fs exposure and effects. Moreover having a unique CFeco and CF tox via a weighting of the 17 CF'eco and the 17 CF' tox, respectively, is necessary for a use in LCA. Unfortunately the variability of the composition makes the weighting difficult, so it is suggested to calculate the mean CF'eco and CF'tox. Finally this research could be carried out on other pollutants whose fate is known to be modified by a complex organic mixture in an effort to ensure that impact characterization better reflects reality. (Abstract shortened by UMI.).

  19. Bilan et apports de différentes Analyses Sociales du Cycle de Vie menées dans le secteur des agro-industries

    Directory of Open Access Journals (Sweden)

    Delcour, A.

    2015-01-01

    Full Text Available Assessment and contributions of different Social Life Cycle Assessments performed in the agribusiness sector. Introduction. Consumers are attaching increasing importance to the sustainability of the products they purchase. The agribusiness sector is well aware of this trend and is making efforts to guarantee product sustainability. Literature. Social Life Cycle Assessment (S-LCA is a widely used methodology (like others in this field, such as ISO 26000 and SA 8000 for evaluating the social impact of the activities involved in the life cycle of a product. The S-LCA guidelines were published in 2009 and therefore the framework for this methodology is not yet well established. Nevertheless, some S-LCA studies have been completed and have contributed to the development of the methodology. The objective of this paper is to give feedback to the agribusiness sector and researchers regarding prospects for future use of Social Life Cycle Assessment in the agribusiness sector. Papers selected for this literature review have been chosen on the basis of Scopus's query from 2000 to the present day. Scopus's query contains analyses of major international conferences. The case studies in the agribusiness sector that are reviewed in this paper highlight the usefulness of a social hotspots database, the need for stakeholder involvement in S-LCA implementation, the link between S-LCA and its regional context, and the benefits of developing causal links between indicators and impact categories, such as working conditions and governance. Conclusions. Further methodological investigation needs to be conducted in order to standardize this new methodology. Its ability to provide an overview of assessment of socioeconomic impacts makes it a good choice for evaluating the aspect of social impact as part of sustainability studies.

  20. Sécurité et protection de la vie privée dans les systèmes embarqués automobiles

    OpenAIRE

    Schweppe , Hendrik

    2012-01-01

    Electronic equipment has become an integral part of a vehicle's network architecture, which consists of multiple buses and microcontrollers called Electronic Control Units (ECUs). These ECUs recently also connect to the outside world. Navigation and entertainment system, consumer devices, and Car2X functions are examples for this. Recent security analyses have shown severe vulnerabilities of exposed ECUs and protocols, which may make it possible for attackers to gain control over a vehicle. G...

  1. „Mais Paris demeure un phare...“ Influences de la France dans la vie d’Edvard et Hana Beneš avant 1919

    Czech Academy of Sciences Publication Activity Database

    Hájková, Dagmara; Hajdinová, Eva

    2015-01-01

    Roč. 86, č. 4 (2015), s. 449-472 ISSN 0080-2557 R&D Projects: GA ČR GAP410/10/1273 Institutional support: RVO:67985921 Keywords : Beneš, Edvard * Benešová, Hana * First World War Subject RIV: AB - History

  2. Chaos, entropy, and life-time in classical and quantum systems; Chaos, entropie et duree de vie dans les systemes classiques et quantiques

    Energy Technology Data Exchange (ETDEWEB)

    Seyed Majid Saberi Fathi

    2007-07-15

    In this thesis, we first study Lorentz gas as a billiard ball with elastic collision with the obstacles and a system of hard spheres in 2-dimensions. We study a numerical simulation of the dynamical system and we investigate the entropy increasing in non-equilibrium with time under the effect of collisions and its relation to positive Lyapunov exponents. Then, we study a decay model in a quantum system called Friedrichs model. We consider coupling of the kaons and environment with continuous energies. Then, we show that this model is well adapted to describe oscillation, regeneration, decay and CP violation of a kaonic system. In addition, we apply in the Friedrichs model, the time super-operator formalism that predicts the resonance, i.e. the survival probability of the instable states. (author)

  3. Eco-efficience et analyse des couts du cycle de vie: Developpement d'un outil d'aide a la conception dans l'industrie aeronautique

    Science.gov (United States)

    Mami, Fares

    The aeronautical sector, responsible for about 3 % of the world emissions of greenhouse gases, predict a 70 % growth in 2025 and 300 % to 500 % in 2050 of its emissions compared to the level of 2005. The decision-makers must thus be supported in their choice of conception to integrate the environmental aspect into the decision-making. Our industrial partner in the aeronautical sector developed an expertise in Life Cycle Assessment (LCA) and seeks to integrate the costs and the environmental impacts in a systematic way into the ecodesign of products. Based on the literature review and the objectives of this research we propose a model of eco-efficiency, which integrates LCA with Life Cycle Costing (LCC). This model is consistent with defined cost cutting and environmental impacts reduction targets and allows a simple interpretation of the results while minimizing the efforts during data collection. The model is applied for 3D printing as an alternative production process in the manufacturing of an aircraft blocker door. 3D printing is a new technology of production working by addition of material and present interesting opportunities of cost cutting and environmental impacts, particularly in the aeronautical domain. The results showed that 3D printing, when associated with improvement in the topology of the part, allows an improvement both on costs and environmental impacts of the part life cycle. Nevertheless, the results are sensitive to the productivity of the 3D printing machine, in particular with costs when the productivity of the 3D printing is reduced. This eco-efficiency model presents several opportunities of improvement. A more elaborate definition of the objectives in reduction of environmental impacts would allow to direct the choices in design to considerations of eco-efficiency at a macro level. Moreover, the integration of the social dimension in the model constitutes an important stage to operationalize the stakes of environmental and social responsibility of the company.

  4. Mission locale, vision globale : utopie et vie sociale dans les missions jésuites en Amazonie au XVIIe siècle

    OpenAIRE

    Guzmán, Décio de Alencar

    2015-01-01

    Penser les missions jésuites au XVIIe siècle, c’est penser le monde des prophéties du « Cinquième Empire » d’Antônio Vieira. Cela signifie aussi penser l’expérience missionnaire vécue par cet « homme-monde ». En tant que tel, Vieira projeta vers l’avenir des réalités politiques entièrement neuves imaginées par lui et qui n’avaient jamais existé avant. En arrivant au Maragnon, en 1653, Antônio Vieira, supérieur de la Mission des pères de la Compagnie de Jésus, commença son expérience avec l’es...

  5. Radiation protection and environment day the low doses in everyday life; Radioprotection et environnement les faibles doses dans la vie quotidienne

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    The consequences of low doses exposures are difficult to explore and the studies give often place to controversies. According to the are, differences exist in the methodological approaches. It results from it a confusion on the acceptable levels of exposure, even on the definition of low dose. This day organised by the sections 'non ionizing and research and health of the French society of radiation protection (S.F.R.P.), will be a meeting between professionals of different disciplines, to compare the approaches used for the ionizing and non ionizing radiations as well as the chemical and microbiological agents. It will allow to share the knowledge and the abilities and to progress on methodologies adapted to the evaluation and the management of risks in relation with low doses. (N.C.)

  6. Precise measurement of tau lifetime in ALEPH experiment at the LEP; Mesure precise de la duree de vie du tau dans l`experience ALEPH au LEP

    Energy Technology Data Exchange (ETDEWEB)

    Park, I

    1995-02-01

    A new method is presented for the measurement of the tau lifetime using tau decays to hadrons. Precise measurements ({sigma} {approx} 20{mu}m) of impact parameters (d{sub o} and z{sub o}) of charged tracks using full vertex detector informations allow the reconstruction of the 3-dimensional point of minimum approach of the track to the beam axis. On the other hand, it is shown that an axis perpendicular to the tau axis can be precisely determined ({sigma} {approx} 10 mrad) in the hadronic-hadronic {tau}{sup +}{tau}{sup -} decay events using kinematics and the back-to-back nature of tau pairs in e{sup +}e{sup -} colliders. Combination of both quantities yields a generalized IPS relation in 3D space which is not affected by the beam size nor by the tau direction uncertainty. The experimental resolution can be fitted together with lifetime due to the small smearing. The method allows, therefore, a self-consistent and self-calibrating analysis of tau lifetime. The method has good stability against systematical uncertainties like tracking resolution, non-gaussian tails, etc...The method has been applied to the data collected by the ALEPH detector at LEP in 1992. From 2840 {tau}{sup +} + {sup {tau}-} {yields} hadron + hadron (1-1) decay events and 794 hadron + 3 hadrons (1-3) decay events, the tau lifetimes of 292.9 {+-} 5.9 {+-} 2.7fs and 284.6 {+-} 11.9 {+-} 5.1fs are obtained respectively. The combined {tau} lifetimes is 290.8 {+-} 5.3 {+-} 2.7fs. Statistical uncertainty corresponds to 1.1/{radical}N{sub {tau}}{tau}. This result has low statistical correlation with other precision methods. (author). 70 refs., 80 figs., 21 tabs., 7 ann.

  7. Présence nécessaire de l’art dans L’écriture ou la vie de Jorge Semprun

    Directory of Open Access Journals (Sweden)

    Marina Pedrol-Aguilà

    2016-04-01

    Full Text Available In this autobiographical novel about his internment in Buchenwald, Semprun often alludes to Art. Firstly, former prisoners use the works by artists unconnected with the concentration camp as a reference when trying to portray their inconceivable experi-ence. In this way, Art constitutes a nexus with Freedom, which allows them to en-dure their internment. Secondly, Art is also a doorway to Memory. Thirdly, we must mention the particular relation between totalitarianism and Art. Finally, we will see that, whether it be Art for Art’s sake, or in a more utilitarian way, life and artistic crea-tion unite against death and dehumaniza-tion.

  8. Aspects et mesure de la qualité de vie : évolution et renouvellement des tableaux de bord métropolitains

    Directory of Open Access Journals (Sweden)

    Pierre J. Hamel

    2008-02-01

    Full Text Available La mesure de la qualité de vie à l’intérieur des espaces urbains préoccupe les administrations publiques depuis nombre d’années. Cet article passe en revue les modèles de mesure de la qualité de vie développés par les métropoles canadiennes. Il s’interroge sur l’évolution de ces modèles de mesure et sur leur capacité à rendre compte des différentes problématiques désormais associées à la notion de qualité de vie comme le développement social, l’environnement, la société du risque, les ambiances urbaines ou la compétitivité urbaine.For a number of years now, government bodies at all levels have been concerned with measuring quality of life within urban areas. This paper reviews the models used by Canada’s metropolises to measure quality of life. It examines how the models have evolved and their capacity to consider various issues which have become associated with the notion of quality of life, such as social development, environment, risk society, urban surroundings, or urban competitiveness.

  9. A case of the persistence of the primitive hypoglossal artery with an enlarged hypoglossal canal

    International Nuclear Information System (INIS)

    Tomura, Noriaki; Inugami, Atsushi; Uemura, Kazuo; Asakura, Ken

    1987-01-01

    A case of the persistence of the primitive hypoglossal artery is reported, with a roentgenographic demonstration of the enlarged hypoglossal canal. A 63-year-old man was admitted to this hospital as a result of a malfunction of the ventriculo-peritoneal shunt. At the age of 51, the patient had been operated on in this hospital for an aneurysm of the right middle cerebral artery; at that time, the right primitive hypoglossal artery was observed on right carotid angiograms. On the day following admission, bilateral retrograde vertebral angiography was performed and the right persistent primitive hypoglossal artery was recognized again. Stenvers views of the skull demonstrated an enlargement of the hypoglossal canal, with a smooth sclerotic rim. High-resolution computed tomography with a contrast infusion delineated the right primitive hypoglossal artery through the enlarged hypoglossal canal. The diameter of the enlarged right hypoglossal canal and that of the left one were found to be 8 mm and 4 mm respectively on the CT. When an enlargement of the hypoglossal canal with a sclerotic rim is observed, the persistence of the primitive hypoglossal artery should be considered in the differential diagnosis. (author)

  10. Physically Unclonable Cryptographic Primitives by Chemical Vapor Deposition of Layered MoS2.

    Science.gov (United States)

    Alharbi, Abdullah; Armstrong, Darren; Alharbi, Somayah; Shahrjerdi, Davood

    2017-12-26

    Physically unclonable cryptographic primitives are promising for securing the rapidly growing number of electronic devices. Here, we introduce physically unclonable primitives from layered molybdenum disulfide (MoS 2 ) by leveraging the natural randomness of their island growth during chemical vapor deposition (CVD). We synthesize a MoS 2 monolayer film covered with speckles of multilayer islands, where the growth process is engineered for an optimal speckle density. Using the Clark-Evans test, we confirm that the distribution of islands on the film exhibits complete spatial randomness, hence indicating the growth of multilayer speckles is a spatial Poisson process. Such a property is highly desirable for constructing unpredictable cryptographic primitives. The security primitive is an array of 2048 pixels fabricated from this film. The complex structure of the pixels makes the physical duplication of the array impossible (i.e., physically unclonable). A unique optical response is generated by applying an optical stimulus to the structure. The basis for this unique response is the dependence of the photoemission on the number of MoS 2 layers, which by design is random throughout the film. Using a threshold value for the photoemission, we convert the optical response into binary cryptographic keys. We show that the proper selection of this threshold is crucial for maximizing combination randomness and that the optimal value of the threshold is linked directly to the growth process. This study reveals an opportunity for generating robust and versatile security primitives from layered transition metal dichalcogenides.

  11. Intrapartum synthetic oxytocin reduce the expression of primitive reflexes associated with breastfeeding.

    Science.gov (United States)

    Marín Gabriel, Miguel A; Olza Fernández, Ibone; Malalana Martínez, Ana M; González Armengod, Carmen; Costarelli, Valeria; Millán Santos, Isabel; Fernández-Cañadas Morillo, Aurora; Pérez Riveiro, Pilar; López Sánchez, Francisco; García Murillo, Lourdes

    2015-05-01

    Several synthetic peptide manipulations during the time surrounding birth can alter the specific neurohormonal status in the newborn brain. This study is aimed at assessing whether intrapartum oxytocin administration has any effect on primitive neonatal reflexes and determining whether such an effect is dose-dependent. A cohort prospective study was conducted at a tertiary hospital. Mother-infant dyads who received intrapartum oxytocin (n=53) were compared with mother-infant dyads who did not receive intrapartum oxytocin (n=45). Primitive neonatal reflexes (endogenous, antigravity, motor, and rhythmic reflexes) were quantified by analyzing videotaped breastfeeding sessions in a biological nurturing position. Two observers blind to the group assignment and the oxytocin dose analyzed the videotapes and assesed the newborn's state of consciousness according to the Brazelton scale. The release of all rhythmic reflexes (p=0.01), the antigravity reflex (p=0.04), and total primitive neonatal reflexes (p=0.02) in the group exposed to oxytocin was lower than in the group not exposed to oxytocin. No correlations were observed between the dose of oxytocin administered and the percentage of primitive neonatal reflexes released (r=0.03; p=0.82). Intrapartum oxytocin administration might inhibit the expression of several primitive neonatal reflexes associated with breastfeeding. This correlation does not seem to be dose-dependent.

  12. PREFERENSI PEMBIAYAAN USAHA MIKRO DAN KECIL : PERSPEKTIF GENDER DAN ENTREPRENEURABILITY

    Directory of Open Access Journals (Sweden)

    Khaira Amalia Fachrudin

    2013-06-01

    Full Text Available Preferensi pembiayaan dalam perusahaan besar lebih didasarkan pada karakteristik perusahaan tersebut.  Namun dalam usaha mikro dan kecil hal ini mungkin berbeda dan bergantung pada karakteristik pemiliknya seperti gender dan entrepreneurability.   Perbedaan gender mungkin juga membedakan entrepreneurability dan dukungan yang diterima.  Penelitian ini akan menguji apakah terdapat perbedaan preferensi pembiayaan berdasarkan gender, entrepreneurability berdasarkan gender dan berdasarkan preferensi pembiayaan, serta perbedaan dukungan berdasarkan gender.  Sampel dari usaha mikro dan kecil yang bergerak dalam bidang kuliner  diuji dengan uji beda Independent Sample t Test dan kemudian dengan Crosstabulation untuk lebih memperinci hasilnya.  Hasil uji menunjukkan bahwa tidak terdapat perbedaan yang signifikan preferensi pembiayaan berdasarkan gender dan berdasarkan  entrepreneurability, namun entrepreneurability berbeda signifikan berdasarkan gender dan juga ditemukan bahwa dukungan moral, tenaga, dan modal yang diterima pemilik usaha pria dan wanita tidak berbeda signifikan (p value lebih kecil dari 0.05.   Hasil ini menunjukkan bahwa terdapat kesetaraan gender dalam pembiayaan usaha dan entrepreneurability lebih tinggi pada pria.  Pria pemilik usaha juga mendapatkan dukungan tenaga kerja yang lebih banyak daripada wanita.  Dukungan tenaga ini adalah salah satu bentuk  financial bootstrapping karena dapat mengurangi pembiayaan usaha

  13. Global and exponential attractors of the three dimensional viscous primitive equations of large-scale moist atmosphere

    OpenAIRE

    You, Bo; Li, Fang

    2016-01-01

    This paper is concerned with the long-time behavior of solutions for the three dimensional viscous primitive equations of large-scale moist atmosphere. We prove the existence of a global attractor for the three dimensional viscous primitive equations of large-scale moist atmosphere by asymptotic a priori estimate and construct an exponential attractor by using the smoothing property of the semigroup generated by the three dimensional viscous primitive equations of large-scale moist atmosphere...

  14. Interaction à deux joueurs en informatique quantique : primitives cryptographiques et complexité en requêtes

    OpenAIRE

    Magnin , Loïck

    2011-01-01

    This dissertation studies two different aspects of two-player interaction in the model of quantum communication and quantum computation.First, we study two cryptographic primitives, that are used as basic blocks to construct sophisticated cryptographic protocols between two players, e.g. identification protocols.The first primitive is ``quantum bit commitment''. This primitive cannot be done in an unconditionally secure way. However, security can be obtained by restraining the power of the tw...

  15. DETEKSI DAN MANAJEMEN REFEEDING SYNDROME

    OpenAIRE

    Darmadi Darmadi; Riska Habriel Ruslie

    2012-01-01

    AbstrakRefeeding syndrome (RFS) dideskripsikan sebagai perubahan biokimiawi, manifestasi klinis dan komplikasi sebagai konsekuensi pemberian nutrisi pada pasien kurang gizi. Refeeding syndrome ini menyebabkan dampak buruk dan kematian. Sindroma ini lebih sering terjadi pada kelompok risiko. Refeeding syndrome merupakan suatu sindroma yang sering tak terdiagnosis oleh karena itu perlu peningkatan pengetahuan dan kesadaran dari tenaga medis untuk mengurangi morbiditas dan mortalitas dari RFS. K...

  16. Cave men: stone tools, Victorian science, and the 'primitive mind' of deep time.

    Science.gov (United States)

    Pettitt, Paul B; White, Mark J

    2011-03-20

    Palaeoanthropology, the study of the evolution of humanity, arose in the nineteenth century. Excavations in Europe uncovered a series of archaeological sediments which provided proof that the antiquity of human life on Earth was far longer than the biblical six thousand years, and by the 1880s authors had constructed a basic paradigm of what 'primitive' human life was like. Here we examine the development of Victorian palaeoanthropology for what it reveals of the development of notions of cognitive evolution. It seems that Victorian specialists rarely addressed cognitive evolution explicitly, although several assumptions were generally made that arose from preconceptions derived from contemporary 'primitive' peoples. We identify three main phases of development of notions of the primitive mind in the period.

  17. Caspase-9 has a nonapoptotic function in Xenopus embryonic primitive blood formation.

    Science.gov (United States)

    Tran, Hong Thi; Fransen, Mathias; Dimitrakopoulou, Dionysia; Van Imschoot, Griet; Willemarck, Nicolas; Vleminckx, Kris

    2017-07-15

    Caspases constitute a family of cysteine proteases centrally involved in programmed cell death, which is an integral part of normal embryonic and fetal development. However, it has become clear that specific caspases also have functions independent of cell death. In order to identify novel apoptotic and nonapoptotic developmental caspase functions, we designed and transgenically integrated novel fluorescent caspase reporter constructs in developing Xenopus embryos and tadpoles. This model organism has an external development, allowing direct and continuous monitoring. These studies uncovered a nonapoptotic role for the initiator caspase-9 in primitive blood formation. Functional experiments further corroborated that caspase-9, but possibly not the executioners caspase-3 and caspase-7, are required for primitive erythropoiesis in the early embryo. These data reveal a novel nonapoptotic function for the initiator caspase-9 and, for the first time, implicate nonapoptotic caspase activity in primitive blood formation. © 2017. Published by The Company of Biologists Ltd.

  18. A close look at the mammalian blastocyst: epiblast and primitive endoderm formation.

    Science.gov (United States)

    Artus, Jérôme; Chazaud, Claire

    2014-09-01

    During early development, the mammalian embryo undergoes a series of profound changes that lead to the formation of two extraembryonic tissues--the trophectoderm and the primitive endoderm. These tissues encapsulate the pluripotent epiblast at the time of implantation. The current model proposes that the formation of these lineages results from two consecutive binary cell fate decisions. The first controls the formation of the trophectoderm and the inner cell mass, and the second controls the formation of the primitive endoderm and the epiblast within the inner cell mass. While early mammalian embryos develop with extensive plasticity, the embryonic pattern prior to implantation is remarkably reproducible. Here, we review the molecular mechanisms driving the cell fate decision between primitive endoderm and epiblast in the mouse embryo and integrate data from recent studies into the current model of the molecular network regulating the segregation between these lineages and their subsequent differentiation.

  19. INOVASI DAN STRATEGI PENCAPAIANNYA

    Directory of Open Access Journals (Sweden)

    Liem Ferryanto

    2009-01-01

    Full Text Available Innovation is the way of life of any institution to profitably sustain its life. It starts with empathy, the ability to reach outside of ourselves and walk in someone else’s shoes, and optimal implementation of the newly advanced technology. Innovation shows its results through continuously hard working efforts known as "10 Thousand Hours Rule". As world uncertainty creates complexity we, instead of predicting, should therefore anticipate the future by creating and managing real options on contingent projects or elements of alternative optimal strategies. This should reflect into our portfolio strategy. Abstract in Bahasa Indonesia: Inovasi merupakan darah bagi suatu institusi untuk bisa hidup berkelanjutan serta menguntungkan. Inovasi berupa penemuan baru secara sistematis yang berawal dari empati, kemampuan untuk melihat dunia melalui mata orang lain, dan pemanfaatan secara optimal kemajuan teknologi yang ada. Inovasi baru menghasilkan buahnya melalui kerja keras, yaitu dengan mengikuti “Aturan 10 Ribu Jam” secara berkesinambungan. Ketidakpastian, interaksi, keterbatasan dan degradasi menciptakan kompleksitas tentang kebutuhan dan solusi di masa depan. Oleh sebab itu daripada meramalkan risiko yang bakal terjadi, kita sebaiknya memasang strategi berupa skenario untuk mereduksi akibat dari risiko masa depan yang tidak kita mengerti. Skenario ini dapat diperoleh lewat penciptaan dan penanganan beberapa pilihan nyata atas semua proyek antisipatif yang ada. Kata kunci: Inovasi, ketidakpastian dan kompleksitas, aturan 10 ribu jam, paradoks strategi, peta jalan, empati, kerja berkesinambungan.

  20. Échos de Sappho et éléments nuptiaux dans les Odes d’Horace

    Directory of Open Access Journals (Sweden)

    Olivier Thévenaz

    2010-11-01

    Full Text Available Partant du constat que la réception de Sappho oppose les volets erotique et nuptial de sa poésie, cet article aborde le cas particulier de la lyrique d'Horace, qui ne semble pas faire de place à la Sappho nuptiale. Le thème du mariage y apparaît néanmoins de diverses manières. Il constitue d'abord un idéal moral, et ce surtout dans des odes politiques soutenant les réformes entreprises par Auguste et culminant dans les lois de 18—17 av. J.-C. sur les mariages et les adultères. Par contraste, les odes érotiques concernent des relations essentiellement non-matrimoniales, conformément à la tradition lyrique dominante. Néanmoins, un certain nombre de formules et d'images y introduisent des connotations nuptiales, qui prennent dans ce contexte des valeurs métaphoriques. Le mariage peut ainsi représenter la saison de la vie propice à l'amour ; moment unique dans une vie amoureuse et récurrent comme circonstance lyrique rituelle, il confronte alors le temps linéaire de l'amour à celui, cyclique, de la poésie lyrique. Mais le mariage fonctionne aussi comme métaphore de l'éternité non pas érotique, mais poétique promise par la lyrique, qui permet à Horace d'opposer sa poésie d'amour à celle de Catulle et des élégiaques. Ainsi, bien que la Sappho nuptiale ne soit pas directement évoquée par Horace — sans doute parce que Catulle l'avait fait avant lui —, le thème du mariage n'en occupe pas moins une place importante, entre autres dans la définition de sa lyrique par rapport à la tradition et aux poètes contemporains.

  1. PENGELOLAAN PENELITIAN DAN PENGEMBANGAN KESEHATAN DI THAILAND, MYANMAR, DAN INDIA

    Directory of Open Access Journals (Sweden)

    Anorital, SKM Anorital, SKM

    2012-09-01

    Full Text Available Dalam bulan Januari 1991 yang lalu, Sdr. Anorital, SKM (Ka. Subbag. Pengumpulan dan PengolahanData Badan Litbangkes dan H. Syafwani Mirin, SKM (Ka. Bag. Keuangan Badan Litbangkes memperoleh fellowship dari WHO untuk melakukan studi perbandingan ke institusi-institusi penelitian kesehatan di Thailand,Myanmar, dan India.Berikut di bawah ini tulisan bersangkutan yang menggambarkan secara garis besar pengelolaan penelitian dan pengembangan kesehatan pada masing-masing negara obyek studi. Semoga informasi yang terkandung pada tulisan ini dapat bermanfaat bagi pengembangan Badan Penelitian dan Pengembangan Kesehatan.

  2. Rapprocher les gens et les idées afin d'améliorer les conditions de vie

    International Development Research Centre (IDRC) Digital Library (Canada)

    14 déc. 2010 ... à l'opportunité et à la qualité exceptionnelle des recherches qu'il finance: ... accès aux services communaux comme l'eau, l'électricité, le téléphone ? ... Dans la Corne de l'Afrique, des chercheurs élaborent des indices sur ...

  3. Missing relationship of moyamoya and persistent primitive artery in Europeans. Another distinctive feature or artifact?

    Science.gov (United States)

    Wenz, Holger; Wenz, Ralf; Förster, Alex; Fontana, Johann; Kerl, Hans Ulrich; Groden, Christoph; Scharf, Johann

    2015-11-01

    Previous studies found higher incidence of persistent primitive arteries in Asian moyamoya (MM) patients than in the general population, which was thought to be a characteristic trait of the MM entity in general. We analyzed incidence of persistent primitive arteries and demographics of patients with European MM treated in one single center. First, we compared our large dataset to existing literature and second, we raised the question whether European MM demonstrates similar high prevalence of persistent primitive arteries as it was previously presented within Asian MM. All European MM on whom revascularization surgery was performed from 1999 to 2013 were included. Demographics and associated diseases were obtained by retrospective chart review. Two independent readers evaluated 122 MM angiograms to determine the occurrence of persistent primitive arteries as well as the Suzuki score. We identified 112 cases with MM disease, 10 with MM syndrome. Mean age at time of diagnosis was 38.2 (range 6-64 years); a peak incidence in early childhood was not observed. Ninety (73.8%) were women, associated systemic diseases were found in four patients. Seven cases (5.7%) presented with unilaterally affected vessels. The majority of patients (71; 58.2%) were graded Suzuki Score 3. One 14-year-old boy with moyamoya presented with a primitive trigeminal artery (0.89%). We did not find a bimodal age distribution, but only a second peak during adulthood. Unlike previous studies on Asian moyamoya patients, our collective does not exhibit a higher prevalence of persistent primitive arteries than the normal population.

  4. A mutli-technique search for the most primitive CO chondrites

    OpenAIRE

    Alexander, C.M.O'D.; Greenwood, R.C.; Bowden, R.; Gibson, J.M.; Howard, K.T.; Franchi, I.A.

    2018-01-01

    As part of a study to identify the most primitive COs and to look for weakly altered CMs amongst the COs, we have conducted a multi-technique study of 16 Antarctic meteorites that had been classified as primitive COs. For this study, we have determined: (1) the bulk H, C and N abundances and isotopes, (2) bulk O isotopic compositions, (3) bulk modal mineralogies, and (4) for some selected samples the abundances and compositions of their insoluble organic matter (IOM). Two of the 16 meteorites...

  5. Primary dorsal spine primitive neuroectodermal tumor in an adult patient: Case report and literature review

    Directory of Open Access Journals (Sweden)

    Satyashiva Munjal

    2017-01-01

    Full Text Available Primary spinal primitive neuroectodermal tumor (psPNET is a rare entity with few cases reported in literature. We report a case of a 50-year-old female who presented to us with paraplegia and was diagnosed with extradural dorsal spine psPNET. The diagnosis was not suspected at presentation or on radiology but was established on histopathological examination. It is important to distinguish it from central nervous system primitive neuroectodermal tumors and from other spinal tumors since it follows a different clinical course and therapeutic outcome.

  6. A Synoptic of Software Implementation for Shift Registers Based on 16th Degree Primitive Polynomials

    Directory of Open Access Journals (Sweden)

    Mirella Amelia Mioc

    2016-08-01

    Full Text Available Almost all of the major applications in the specific Fields of Communication used a well-known device called Linear Feedback Shift Register. Usually LFSR functions in a Galois Field GF(2n, meaning that all the operations are done with arithmetic modulo n degree Irreducible  and especially  Primitive Polynomials. Storing data in Galois Fields allows effective and manageable manipulation, mainly in computer cryptographic applications. The analysis of functioning for Primitive Polynomials of 16th degree shows that almost all the obtained results are in the same time distribution.

  7. Efficient conservative ADER schemes based on WENO reconstruction and space-time predictor in primitive variables

    Science.gov (United States)

    Zanotti, Olindo; Dumbser, Michael

    2016-01-01

    We present a new version of conservative ADER-WENO finite volume schemes, in which both the high order spatial reconstruction as well as the time evolution of the reconstruction polynomials in the local space-time predictor stage are performed in primitive variables, rather than in conserved ones. To obtain a conservative method, the underlying finite volume scheme is still written in terms of the cell averages of the conserved quantities. Therefore, our new approach performs the spatial WENO reconstruction twice: the first WENO reconstruction is carried out on the known cell averages of the conservative variables. The WENO polynomials are then used at the cell centers to compute point values of the conserved variables, which are subsequently converted into point values of the primitive variables. This is the only place where the conversion from conservative to primitive variables is needed in the new scheme. Then, a second WENO reconstruction is performed on the point values of the primitive variables to obtain piecewise high order reconstruction polynomials of the primitive variables. The reconstruction polynomials are subsequently evolved in time with a novel space-time finite element predictor that is directly applied to the governing PDE written in primitive form. The resulting space-time polynomials of the primitive variables can then be directly used as input for the numerical fluxes at the cell boundaries in the underlying conservative finite volume scheme. Hence, the number of necessary conversions from the conserved to the primitive variables is reduced to just one single conversion at each cell center. We have verified the validity of the new approach over a wide range of hyperbolic systems, including the classical Euler equations of gas dynamics, the special relativistic hydrodynamics (RHD) and ideal magnetohydrodynamics (RMHD) equations, as well as the Baer-Nunziato model for compressible two-phase flows. In all cases we have noticed that the new ADER

  8. A PICKED SAMPLE TO THE FOOTPRINT OF PRIMITIVE INDIVIDUALISM OF RECENT DATE ART: BASQUIAT

    Directory of Open Access Journals (Sweden)

    Ozgur TOSUN

    2015-09-01

    Full Text Available Through the culturel history, meaning of art and art object have been queried and these researchs have emerged thesis and antithesis. Fundamentaly, this article aim to comparison interaction and/or conflict with mathematical rationalist art and primitive/heuristical/romantic art. In this context, effects of primitive and experssive art to the nowadays’ art perception are examined to envolve out of Basquiat and neo expressionism. Entailment of expressive art in contemporary art is researched for answers for questions in terms of cultural and genetic heritage of art and instinctive origins of making art object.

  9. Élites intellectuelles françaises, élites intellectuelles grecques et la « question de la langue » en Grèce dans les années 1920 et 1930 : le cas de Louis Roussel

    OpenAIRE

    Calvié, Julien

    2016-01-01

    Louis Roussel a tenu dans l’histoire du néo-hellénisme en France un rôle de pionnier. Son journal, Libre, qui parut régulièrement de décembre 1922 à juillet 1936, nous fournit une vision très riche et très vivante de la vie intellectuelle athénienne dans les années 1920 et 1930.Nous étudierons successivement la représentation des partisans de la langue savante et la représentation des démoticistes dans Libre. Nous conclurons en constatant que Louis Roussel a, sur « la question de la langue » ...

  10. Atomes une exploration visuelle de tous les éléments connus dans l'univers

    CERN Document Server

    Gray, Theodore

    2013-01-01

    Quelle est leur température critique ? Qu'est-ce que la masse atomique, la densité d'un matériau, l'ordre de remplissage des électrons ? Cet ouvrage invite avec pédagogie et humour à un passionnant voyage au pays des éléments, à partir de leur tableau périodique universel. Soutenue par une exploration visuelle qui montre l'élément à l'état pur mais aussi ses composés et ses applications les plus caractéristiques dans la vie quotidienne, cette approche pratique offre une combinaison parfaite de science chimique et de photographies, qui séduira les lecteurs les plus avertis comme tous les autres habitants sensibles de l'univers.

  11. Queneau, Perec, Duras : Trois manières de boire dans le roman français

    Directory of Open Access Journals (Sweden)

    Véronique Montémont

    2009-09-01

    Full Text Available L’alcool et les alcools sont des thèmes étroitement associés au monde littéraire : si l’on en doutait, une recherche dans la base Frantext, qui comporte près de 3952 textes français et francophones, suffirait à nous en convaincre : une requête sur le lemme alcool ne ramène pas moins de 3338 occurrences. Si l’on élargit l’isotopie considérée, on trouve 23 372 occurrences de vin, 2953 mentions de bière, 1436 d’eau-de-vie, 834 de Champagne, 122 de cognac… ainsi que quelques dizaines de cuites, r...

  12. Kinerja Dan Efisiensi Bank Pemerintah (Bumn) Dan Busn Yang Go Publik Di Indonesia

    OpenAIRE

    Haryanto, Sugeng

    2012-01-01

    Penelitian ini menganalisis kinerja dan tingkat efisiensi bank-bank BUMN dan BUSN yang go Publik di Bursa Efek Indonesia. Sample penelitian ini mengambil tiga bank BUMN Bank BNI 46, Bank Mandiri dan Bank BRI) dan tiga bank BUSN (Bank BCA, Bank Niaga dan Bank Panin) dengan periode analisis tahun 2005-2011. Varibael yang digunakan meliputi ROA, ROE, LAR. LDR, NPL dan BOPO. Tujuan dari penelitian ini adalah melihat dan menganalisis perbedaan kinerja antara Bank BUMN dan BUSN yang go public di...

  13. Kondisi oral higiene dan karies gigi pada vegetarian dan non vegetarian di Maha Vihara Maitreya Medan

    OpenAIRE

    Prawira, Albert

    2011-01-01

    Perbedaan pola makan antara vegetarian dan non vegetarian dapat mempengaruhi kesehatan gigi dan mulut. Tujuan penelitian adalah untuk mengetahui kondisi oral higiene dan karies gigi pada umat vegetarian dan non vegetarian di Maha Vihara Maitreya Medan. Jenis penelitian adalah survei deskriptif. Sampel terdiri atas 74 vegetarian dan 65 non vegetarian. Pemeriksaan oral higiene dan karies gigi masing-masing menggunakan indeks OHIS Greene dan Vermillion dan indeks DMFT Klein, se...

  14. A new and primitive retrobursal planarian from Australian fresh waters (Platyhelminthes, Turbellaria, Tricladida)

    NARCIS (Netherlands)

    Ball, Ian R.

    1977-01-01

    A primitive freshwater planarian, Eviella hynesae gen. et sp. nov. is described from Australia. It is characterized by its lack of eyes and pigment, possession of caudally branched oviducts, and fully fused testes. Although a primary bursa is absent, its function being taken over by the modified

  15. Growth and sedimentation of dust grains in the primitive solar nebular

    International Nuclear Information System (INIS)

    Battaglia, A.

    1987-01-01

    Formation of the planets in the solar system is envisioned to occur via a gravitational instability in a thin layer of dust located at the midplane of the primitive solar nebula. The break-up of the dust layer gives rise to seed plants (planetesimals) that, through successive collisions, eventually form the present-day planets. This thesis addresses the problem of the formation of the dust layer, beginning with a configuration in which the dust particles are uniformly mixed with the nebula's turbulent gas. To describe the properties of turbulence in the primitive solar nebula, models by Canuto et al. (1987) and by Cabot et al. (1987) are used. The available results concerning calculation of the velocity of particles embedded in a turbulent fluid were found to be unsatisfactory; therefore, a new formalism was developed to express the latter quantity in terms of the properties of the turbulence in the fluid. Following the space-time evolution of the grains, formalism was developed that simulates the simultaneous processes of collisions and sedimentation of the dust grains in the primitive solar nebula. It is concluded that, for the model of the primitive solar nebula considered, the formation of a dust layer at midplane is very unlikely

  16. A direct Primitive Variable Recovery Scheme for hyperbolic conservative equations: The case of relativistic hydrodynamics.

    Science.gov (United States)

    Aguayo-Ortiz, A; Mendoza, S; Olvera, D

    2018-01-01

    In this article we develop a Primitive Variable Recovery Scheme (PVRS) to solve any system of coupled differential conservative equations. This method obtains directly the primitive variables applying the chain rule to the time term of the conservative equations. With this, a traditional finite volume method for the flux is applied in order avoid violation of both, the entropy and "Rankine-Hugoniot" jump conditions. The time evolution is then computed using a forward finite difference scheme. This numerical technique evades the recovery of the primitive vector by solving an algebraic system of equations as it is often used and so, it generalises standard techniques to solve these kind of coupled systems. The article is presented bearing in mind special relativistic hydrodynamic numerical schemes with an added pedagogical view in the appendix section in order to easily comprehend the PVRS. We present the convergence of the method for standard shock-tube problems of special relativistic hydrodynamics and a graphical visualisation of the errors using the fluctuations of the numerical values with respect to exact analytic solutions. The PVRS circumvents the sometimes arduous computation that arises from standard numerical methods techniques, which obtain the desired primitive vector solution through an algebraic polynomial of the charges.

  17. Farey Statistics in Time n^{2/3} and Counting Primitive Lattice Points in Polygons

    OpenAIRE

    Patrascu, Mihai

    2007-01-01

    We present algorithms for computing ranks and order statistics in the Farey sequence, taking time O (n^{2/3}). This improves on the recent algorithms of Pawlewicz [European Symp. Alg. 2007], running in time O (n^{3/4}). We also initiate the study of a more general algorithmic problem: counting primitive lattice points in planar shapes.

  18. Pediatric Primitive Neuroectodermal Tumors of the Central Nervous System Differentially Express Granzyme Inhibitors

    NARCIS (Netherlands)

    Vermeulen, Jeroen F; van Hecke, Wim; Spliet, Wim G M; Villacorta Hidalgo, José; Fisch, Paul; Broekhuizen, Roel; Bovenschen, Niels

    2016-01-01

    BACKGROUND: Central nervous system (CNS) primitive neuroectodermal tumors (PNETs) are malignant primary brain tumors that occur in young infants. Using current standard therapy, up to 80% of the children still dies from recurrent disease. Cellular immunotherapy might be key to improve overall

  19. On the small time asymptotics of 3D stochastic primitive equations

    OpenAIRE

    Dong, Zhao; Zhang, Rangrang

    2017-01-01

    In this paper, we establish a small time large deviation principle for the strong solution of 3D stochastic primitive equations driven by multiplicative noise. Both the small noise and the small, but highly nonlinear, unbounded nonlinear terms should be taken into consideration.

  20. Capture, learning, and classification of upper extremity movement primitives in healthy controls and stroke patients.

    Science.gov (United States)

    Guerra, Jorge; Uddin, Jasim; Nilsen, Dawn; Mclnerney, James; Fadoo, Ammarah; Omofuma, Isirame B; Hughes, Shatif; Agrawal, Sunil; Allen, Peter; Schambra, Heidi M

    2017-07-01

    There currently exist no practical tools to identify functional movements in the upper extremities (UEs). This absence has limited the precise therapeutic dosing of patients recovering from stroke. In this proof-of-principle study, we aimed to develop an accurate approach for classifying UE functional movement primitives, which comprise functional movements. Data were generated from inertial measurement units (IMUs) placed on upper body segments of older healthy individuals and chronic stroke patients. Subjects performed activities commonly trained during rehabilitation after stroke. Data processing involved the use of a sliding window to obtain statistical descriptors, and resulting features were processed by a Hidden Markov Model (HMM). The likelihoods of the states, resulting from the HMM, were segmented by a second sliding window and their averages were calculated. The final predictions were mapped to human functional movement primitives using a Logistic Regression algorithm. Algorithm performance was assessed with a leave-one-out analysis, which determined its sensitivity, specificity, and positive and negative predictive values for all classified primitives. In healthy control and stroke participants, our approach identified functional movement primitives embedded in training activities with, on average, 80% precision. This approach may support functional movement dosing in stroke rehabilitation.

  1. Identification of novel biomarkers in pediatric primitive neuroectodermal tumors and ependymomas by proteome-wide analysis

    NARCIS (Netherlands)

    de Bont, Judith M.; den Boer, Monique L.; Kros, Johan M.; Passier, Monique M. C. J.; Reddinglus, Roel E.; Smitt, Peter A. E. Sillevis; Luider, Theo M.; Pieters, Rob

    The aim of this study was to identify aberrantly expressed proteins in pediatric primitive neuroectodermal tumors (PNETs) and ependymornas. Tumor tissue of 29 PNET and 12 ependymoma patients was subjected to 2-dimensional difference gel electrophoresis. Gel analysis resulted in 79 protein spots

  2. the reception of the deuteronomic social law in the primitive church

    African Journals Online (AJOL)

    of the Primitive Church's social and ecclesiological (self-)understanding, this study highlights ... have been written by Moses as well, the Book of Deuteronomy presents itself overall as a .... to reform society reached their limits when they became economically, socially and ..... sins of adultery and prostitution. In light of these ...

  3. Primitive Liquid Water of the Solar System in an Aqueous Altered Carbonaceous Chondrite

    Science.gov (United States)

    Tsuchiyama, A.; Miyake, A.; Kitayama, A.; Matsuno, J.; Takeuchi, A.; Uesugi, K.; Suzuki, Y.; Nakano, T.; Zolensky, M. E.

    2016-01-01

    Non-destructive 3D observations of the aqueous altered CM chondrite Sutter's Mill using scanning imaging x-ray microscopy (SIXM) showed that some of calcite and enstatite grains contain two-phase inclusion, which is most probably composed of liquid water and bubbles. This water should be primitive water responsible for aqueous alteration in an asteroid in the early solar system.

  4. Primitivity and weak distributivity in near rings and matrix near rings

    International Nuclear Information System (INIS)

    Abbasi, S.J.

    1993-08-01

    This paper shows the structure of matrix near ring constructed over a weakly distributive and primative near ring. It is proved that a weakly distributive primitive near ring is a ring and the matrix near rings constructed over it is also a bag. (author). 14 refs

  5. Fermat’s ‘primitive solutions’ and some arithmetic of elliptic curves

    NARCIS (Netherlands)

    Top, Jaap

    1993-01-01

    In his work on Diophantine equations of the form y2=ax4+bx3+cx2+dx+e, Fermat introduced the notion of primitive solutions. In this expository note we intend to interpret this notion more geometrically, and explain what it means in terms of the arithmetic of elliptic curves. The specific equation

  6. Cohesion between two clay lamellae: From Primitive Model to Full Molecular Simulation

    International Nuclear Information System (INIS)

    Carrier, Benoit; Vandamme, Matthieu; Pellenq, Roland; Van Damme, Henri

    2012-01-01

    Document available in extended abstract form only. The objective of this work is to investigate the range of validity of various models to describe accurately the cohesion between two charged clay lamellae. These models, in order of increasing complexity, are the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory, the primitive model, the explicit solvent primitive model and the full molecular model. We aim at providing a clear picture of which physical mechanisms play a significant role for various interlayer spacings, surface charges and cationic charges. The up-scaling of the mechanical properties starting from the lamellar microstructure of a smectite is usually performed within the framework of the DLVO theory. In this case, the interaction between two charged lamellae with cations between them is the sum of the repulsive double layer electrostatic interaction and of the attractive Van der Waals interaction. However, the Primitive Model shows that concentration fluctuations of counter-ions can generate a strongly attractive ionic correlation force. The Primitive Model is a Monte-Carlo simulation of hydrated counter-ions between two infinite charges surfaces and the water is implicitly modeled by scaling all electrostatic interactions by the dielectric permittivity of bulk water. Nevertheless, for very small inter-layer spacings (1 nm), molecular simulations and experiments show that water is organized in a layered structure and does not behave like bulk water. Therefore, we investigate the role of the solvent in the cohesion of clay lamellae. For this purpose, we use a modified version of the original Primitive Model in which the solvent is modeled by point-dipoles: This model is called the Explicit Solvent Primitive Model. We consider four different systems: A Na + -montmorillonite, a Ca 2+ -montmorillonite, a Na + -vermiculite, a Ca 2+ -vermiculite. The vermiculite layers are twice as charged as the montmorillonite layers. We use a full molecular model as a

  7. IDE DAN DESAIN

    Directory of Open Access Journals (Sweden)

    Priscilia Yunita Wijaya

    1999-01-01

    Full Text Available We have seen many desain all around our everyday living. Design exist in the form of brochures%2C posters%2C banners%2C signages%2C book covers%2C and etcetera. Some are nice and easy to understand%2C some are ok%2C and some look like they are not fully develop and thought. A word that run across our mind whrn we enjoying a design is idea . A good design almost always associated with a good idea%2C is it tru? This paper is going to discuss about desain and its relationship to idea. Abstract in Bahasa Indonesia : Banyak desain yang diamati dalam kehidupan kita sehari-hari. Desain hadir dalam bentuk brosur%2C poster%2C spanduk%2C tanda-tanda%2C sampul buku%2C dan lain sebagainya. Ada beberapa yang bagus dan mudah untuk dimengerti%2C beberapa yang biasa%2C dan beberapa yang tampak asal dibuat. Sebuah kata yang terlintas dalam pemikiran kita dalam menikmati sebuah desain adalah ide . Sebuah desain yang baik selalu di identikan dengan ide yang baik%2C benarkah hal ini? Apakah desain dan apa hubungannya dengan ide akan dibahas pada tulisan ini.

  8. L’interface Habitat / Habitant : quand le lieu de vie est porteur de maladie - Le cas du radon en PACA

    Directory of Open Access Journals (Sweden)

    Cissé E.

    2012-10-01

    Full Text Available Les préoccupations sont croissantes pour étudier les liens entre des conditions environnementales spécifiques et la fréquence de certaines pathologies. Nous proposons d’analyser ici le lien présupposé entre une exposition au radon et le cancer du poumon. Le radon, est un gaz radioactif d’origine naturelle (issu de la désintégration naturelle de l’uranium présent dans la croûte terrestre et plus particulièrement dans certaines formations géologiques. A partir du sol et de l’eau, le radon se diffuse dans l’air (exhalation et se trouve, par effet de confinement, à des concentrations plus élevées à l’intérieur des bâtiments qu’à l’extérieur. Les descendants solides du radon sont alors inhalés avec l’air respiré et se déposent dans le poumon. Il est établi par diverses études scientifiques que le radon a un impact non négligeable sur certains cancers, notamment du poumon (augmentation de 16 % du risque de cancer du poumon par tranche de 100 Bq/m3, et des cancers digestifs via la consommation d’eau qui s’est chargée en radon au contact du socle. Le nombre annuel de décès par cancer du poumon attribuable à l’exposition domestique au radon en France métropolitaine varie entre 1 200 à 3 575 en fonction des relations exposition-réponse utilisées. Plusieurs régions en France se caractérisent par une problématique radon reconnue et étudiée depuis longtemps (Bretagne, Massif central, Corse. Or, si le radon ne recouvre pas l’ensemble de la région PACA, certaines zones géographiques sont particulièrement concernées et méritent d’être étudiées : le Massif des Maures dans le Var, du Mercantour dans les Alpes-Maritimes et du Briançonnais dans les Hautes-Alpes. La région PACA est une des régions de France et d’Europe les plus touchées par la pollution atmosphérique principalement due à l’augmentation du trafic routier et des contributions de régions industrialisées telles que

  9. L'impact de la relation soignant-soigné dans la prise en soin de la douleur aigüe en post-opératoire chez l'adulte: travail de Bachelor

    OpenAIRE

    Ferrero, Mathilde; Gaspar, Catherine; Pacini, Wendy

    2017-01-01

    Contexte : L’incidence de la douleur post-opératoire (DPO) n’a cessé d’augmenter ces dernières années. Elle constitue une préoccupation majeure au vu de ses effets délétères sur la qualité de vie et sur le système de santé. Les infirmiers-ères occupent une place centrale dans la gestion de l’antalgie. Objectif : L’objectif de cette revue de littérature est d'identifier l’impact de l’interaction soignant-soigné dans la prise en soin de la douleur post-opératoire. La revue de la littérature est...

  10. L’expérience de Lavoisier : évolution depuis deux siècles de sa présentation et de sa fonction dans quelques manuels d’enseignement

    OpenAIRE

    Fournier, Josette

    2018-01-01

    En chauffant du mercure (seul métal à l’état liquide à température ordinaire, et à relativement faible température d’ébullition à 350 °C), Lavoisier voit apparaître des flocules rouges d’oxyde de mercure. L’oxygène de l’air de la cornue a réagi avec le mercure pour former l’oxyde : il ne reste plus dans l’air de la cornue que l’azote. Lavoisier remarque que cette substance n’est pas respirable : un animal ne peut y vivre (azote = a- zoos-, privatif de vie). Dans un second temps, Lavoisier fai...

  11. Les mesures de santé et sécurité au travail auprès des travailleurs étrangers temporaires dans les entreprises saisonnières

    OpenAIRE

    Gravel, Sylvie; Villanueva, Francisco; Bernstein, Stéphanie; Hanley, Jill; Crespo, Daniel; Ostiguy, Emmanuelle

    2014-01-01

    Une analyse des pratiques préventives en santé et sécurité au travail (SST) a été faite dans le cadre d’une étude portant sur les enjeux de gestion ainsi que les conditions de travail et de vie des travailleurs étrangers temporaires (TÉT) employés dans les secteurs de l’horticulture, de la transformation alimentaire et autres secteurs non agricoles. Cette analyse qualitative s’est basée sur deux sources de données. Des entrevues individuelles ont été menées auprès d’employeurs (n = 17), de re...

  12. New hybrid voxelized/analytical primitive in Monte Carlo simulations for medical applications

    International Nuclear Information System (INIS)

    Bert, Julien; Lemaréchal, Yannick; Visvikis, Dimitris

    2016-01-01

    Monte Carlo simulations (MCS) applied in particle physics play a key role in medical imaging and particle therapy. In such simulations, particles are transported through voxelized phantoms derived from predominantly patient CT images. However, such voxelized object representation limits the incorporation of fine elements, such as artificial implants from CAD modeling or anatomical and functional details extracted from other imaging modalities. In this work we propose a new hYbrid Voxelized/ANalytical primitive (YVAN) that combines both voxelized and analytical object descriptions within the same MCS, without the need to simultaneously run two parallel simulations, which is the current gold standard methodology. Given that YVAN is simply a new primitive object, it does not require any modifications on the underlying MC navigation code. The new proposed primitive was assessed through a first simple MCS. Results from the YVAN primitive were compared against an MCS using a pure analytical geometry and the layer mass geometry concept. A perfect agreement was found between these simulations, leading to the conclusion that the new hybrid primitive is able to accurately and efficiently handle phantoms defined by a mixture of voxelized and analytical objects. In addition, two application-based evaluation studies in coronary angiography and intra-operative radiotherapy showed that the use of YVAN was 6.5% and 12.2% faster than the layered mass geometry method, respectively, without any associated loss of accuracy. However, the simplification advantages and differences in computational time improvements obtained with YVAN depend on the relative proportion of the analytical and voxelized structures used in the simulation as well as the size and number of triangles used in the description of the analytical object meshes. (paper)

  13. New hybrid voxelized/analytical primitive in Monte Carlo simulations for medical applications.

    Science.gov (United States)

    Bert, Julien; Lemaréchal, Yannick; Visvikis, Dimitris

    2016-05-07

    Monte Carlo simulations (MCS) applied in particle physics play a key role in medical imaging and particle therapy. In such simulations, particles are transported through voxelized phantoms derived from predominantly patient CT images. However, such voxelized object representation limits the incorporation of fine elements, such as artificial implants from CAD modeling or anatomical and functional details extracted from other imaging modalities. In this work we propose a new hYbrid Voxelized/ANalytical primitive (YVAN) that combines both voxelized and analytical object descriptions within the same MCS, without the need to simultaneously run two parallel simulations, which is the current gold standard methodology. Given that YVAN is simply a new primitive object, it does not require any modifications on the underlying MC navigation code. The new proposed primitive was assessed through a first simple MCS. Results from the YVAN primitive were compared against an MCS using a pure analytical geometry and the layer mass geometry concept. A perfect agreement was found between these simulations, leading to the conclusion that the new hybrid primitive is able to accurately and efficiently handle phantoms defined by a mixture of voxelized and analytical objects. In addition, two application-based evaluation studies in coronary angiography and intra-operative radiotherapy showed that the use of YVAN was 6.5% and 12.2% faster than the layered mass geometry method, respectively, without any associated loss of accuracy. However, the simplification advantages and differences in computational time improvements obtained with YVAN depend on the relative proportion of the analytical and voxelized structures used in the simulation as well as the size and number of triangles used in the description of the analytical object meshes.

  14. Cell adhesive affinity does not dictate primitive endoderm segregation and positioning during murine embryoid body formation.

    Science.gov (United States)

    Moore, Robert; Cai, Kathy Q; Escudero, Diogo O; Xu, Xiang-Xi

    2009-09-01

    The classical cell sorting experiments undertaken by Townes and Holtfreter described the intrinsic propensity of dissociated embryonic cells to self-organize and reconcile into their original embryonic germ layers with characteristic histotypic positioning. Steinberg presented the differential adhesion hypothesis to explain these patterning phenomena. Here, we have reappraised these issues by implementing embryoid bodies to model the patterning of epiblast and primitive endoderm layers. We have used combinations of embryonic stem (ES) cells and their derivatives differentiated by retinoic acid treatment to model epiblast and endoderm cells, and wild-type or E-cadherin null cells to represent strongly or weakly adherent cells, respectively. One cell type was fluorescently labeled and reconstituted with another heterotypically to generate chimeric embryoid bodies, and cell sorting was tracked by time-lapse video microscopy and confirmed by immunostaining. When undifferentiated wild-type and E-cadherin null ES cells were mixed, the resulting cell aggregates consisted of a core of wild-type cells surrounded by loosely associated E-cadherin null cells, consistent with the differential adhesion hypothesis. However, when mixed with undifferentiated ES cells, the differentiated primitive endoderm-like cells sorted to the surface to form a primitive endoderm layer irrespective of cell-adhesive strength, contradicting the differential adhesion hypothesis. We propose that the primitive endoderm cells reach the surface by random movement, and subsequently the cells generate an apical/basal polarity that prevents reentry. Thus, the ability to generate epithelial polarity, rather than adhesive affinity, determines the surface positioning of the primitive endoderm cells. (c) 2009 Wiley-Liss, Inc.

  15. Modelling 3D spatial objects in a geo-DBMS using a 3D primitive

    Science.gov (United States)

    Arens, Călin; Stoter, Jantien; van Oosterom, Peter

    2005-03-01

    There is a growing interest in modelling the world in three dimensions, both in applications and in science. At the same time, geographical information systems are changing into integrated architecture in which administrative and spatial data are maintained in one environment. It is for this reason that mainstream Data Base Management Systems (DBMSs) have implemented spatial data types according to the 'Simple Feature Specifications for SQL', described by the OpenGeospatial Consortium. However, these specifications are 2D, as indeed are the implementations in DBMSs. At the Section GIS Technology of TU Delft, research has been carried out in which a 3D primitive was implemented in a DBMS (Oracle Spatial). To explore the possibilities and complications, a fairly simple 3D primitive was chosen to start with: a polyhedron. In the future the study will be extended with more complex primitives, the ultimate aim being to build 3D models with features closer to the real world. Besides the data structure, a validation function was developed to check the geometric accuracy of the data. Rules for validation were established and translated into prototype implementations with the aid of literature. In order to manipulate the data, a list of useful 3D functions was specified. Most of these were translated into algorithms, which were implemented in the DBMS. The algorithms for these functions were obtained from the relevant literature. The research also comprised a comparative performance test on spatial indexing in 2D and 3D, using an R-tree. Finally, existing software was used to visualize 3D objects structured with the implemented 3D primitive. This research is a first attempt to implement a true 3D primitive in a DBMS. Future research will focus on extending and improving the implementations and on optimizing maintenance and query of 3D objects in DBMSs.

  16. Learned parametrized dynamic movement primitives with shared synergies for controlling robotic and musculoskeletal systems

    Directory of Open Access Journals (Sweden)

    Elmar eRückert

    2013-10-01

    Full Text Available A salient feature of human motor skill learning is the ability to exploitsimilarities across related tasks.In biological motor control, it has been hypothesized that muscle synergies,coherent activations of groups of muscles, allow for exploiting shared knowledge.Recent studies have shown that a rich set of complex motor skills can be generated bya combination of a small number of muscle synergies.In robotics, dynamic movement primitives are commonlyused for motor skill learning. This machine learning approach implements a stable attractor systemthat facilitates learning and it can be used in high-dimensional continuous spaces. However, it does not allow for reusing shared knowledge, i.e. for each task an individual set of parameters has to be learned.We propose a novel movement primitive representationthat employs parametrized basis functions, which combines the benefits of muscle synergiesand dynamic movement primitives. For each task asuperposition of synergies modulates a stable attractor system.This approach leads to a compact representation of multiple motor skills andat the same time enables efficient learning in high-dimensional continuous systems.The movement representation supports discrete and rhythmic movements andin particular includes the dynamic movement primitive approach as a special case.We demonstrate the feasibility of the movement representation in three multi-task learning simulated scenarios.First, the characteristics of the proposed representation are illustrated in a point-mass task.Second, in complex humanoid walking experiments,multiple walking patterns with different step heights are learned robustly and efficiently.Finally, in a multi-directional reaching task simulated with a musculoskeletal modelof the human arm, we show how the proposed movement primitives can be used tolearn appropriate muscle excitation patterns and to generalize effectively to new reaching skills.

  17. La représentation de la sexualité dans la littérature féminine du nouveau millénaire : le cas de Catherine Millet

    Directory of Open Access Journals (Sweden)

    Nathalie Dumas

    2010-05-01

    Full Text Available Frédéric Beigbeder, dans son dernier roman intitulé Windows on the World, en vient à la conclusion que, de nos jours, le Play-boy international n’est en fait plus qu’un célibataire en quête de jouissance, ne chassant que la femme superficielle ou la prostituée. Selon l’auteur, aujourd’hui le Play-boy international est une femme. Une Bridget Jones ou une Carrie Bradschaw de Sex and the City (Beigbeder, 178 et 231. Le type de femme qui fait peur, qui assume et expose sa féminité et son indépendance ainsi que sa sexualité. Catherine Millet, rédactrice en chef du magazine Art Press, est l’une d’elles. Dans La vie sexuelle de Catherine M., publié en avril 2001, elle expose au grand public, d’une manière peu conventionnelle, les détails de sa vie sexuelle allant souvent au-delà de l’écriture dite féminine.

  18. URGENSI DAN PROSPEK PENGATURAN (IUS CONSTITUENDUM UU TENTANG CONTEMPT OF COURT UNTUK MENEGAKKAN MARTABAT DAN WIBAWA PERADILAN

    Directory of Open Access Journals (Sweden)

    Lilik Mulyadi

    2015-07-01

    Full Text Available UU Contempt of Court merupakan kebutuhan yang bersifat urgent, segera dan mendesak, sehingga perlu dilakukan kajian dan penelitian secara kritis, akademis dan bersifat komprehensif untuk menjaga keluhuran dan menegakkan martabat dan wibawa peradilan.

  19. Tragédie et comédie : deux représentations de la pauvreté et de la marginalité dans le théâtre acadien contemporain

    Directory of Open Access Journals (Sweden)

    Denis Bourque

    2012-05-01

    Full Text Available Le théâtre acadien contemporain est né de façon fulgurante avec une mise en scène à la fois tragique et comique de la pauvreté et de la marginalité sociale. Pour la première fois en Acadie, Antonine Maillet, dans Les Crasseux et La Sagouine : Pièce pour une femme seule, donnait, dans leur langage propre, la parole aux miséreux, aux exclus, aux parias de la société. Cette représentation de la pauvreté et de la marginalité comme étant à la fois tragique et comique s’est poursuivie dans le théâtre acadien. On la retrouve dans la pièce Le Djibou de Laval Goupil, par exemple, créée en 1975 et réécrite pour une nouvelle représentation en 1997 sous le titre de Le Djibou ou l’Ange déserteur. Dans les années 2000, Herménégilde Chiasson et Marcel-Romain Thériault reprendront ce thème de la pauvreté et de la marginalité en Acadie, Chiasson le fait de façon directe et comique dans Laurie ou la vie de galerie (2002, puis de façon tragique dans Le Christ est apparu au Gun Club (2005 ; Thériault, pour sa part, n’accorde la parole à ceux-ci que de façon indirecte et tragique dans Le filet : Une tragédie maritime (2009.

  20. Epistemologi dan Keterbatasan Teori Gravitasi

    Directory of Open Access Journals (Sweden)

    Erwin Erwin

    2017-08-01

    Full Text Available Peristiwa tentang kecenderungan jatuhnya benda-benda menuju pusat bumi dan keteraturan peredaran planet dan benda-benda langit lainnya dalam tata surya dahulu dianggap dua fenomena yang berbeda. Mekanika benda langit dan mekanika bumi yang sebelumnya merupakan dua pengetahuan yang terpisah, dianggap satu kesatuan oleh Sir Isaac Newton. Newton mengemukakan hukum gravitasi umum yaitu gaya tarik menarik antara dua benda besarnya sebanding dengan massa masing-masing benda dan berbanding terbalik dengan kuadrat jarak antara kedua benda. Hukum gravitasi ini sukses menjalaskan bagaimana benda cendrung jatuh menuju pusat bumi dan peredaran planet dan benda-benda langit lain mengelilingi matahari dalam sistem tata surya. Namun hukum gravitasi Newton ternyata tidak sepenuhnya tepat, beberapa hal dapat dijelaskan dengan hukum relativitas Einstein, namun demikian hukum relativitas Einstein juga dicurigai masih perlu diamandemen agar dapat menjelaskan fenomena alam dengan tepat.

  1. EPISTEMOLOGI DAN KETERBATASAN TEORI GRAVITASI

    Directory of Open Access Journals (Sweden)

    Erwin Erwin

    2017-08-01

    Full Text Available Peristiwa tentang kecenderungan jatuhnya benda-benda menuju pusat bumi dan keteraturan peredaran planet dan benda-benda langit lainnya dalam tata surya dahulu dianggap dua fenomena yang berbeda. Mekanika benda langit dan mekanika bumi yang sebelumnya merupakan dua pengetahuan yang terpisah, dianggap satu kesatuan oleh Sir Isaac Newton. Newton mengemukakan hukum gravitasi umum yaitu gaya tarik menarik antara dua benda besarnya sebanding dengan massa masing-masing benda dan berbanding terbalik dengan kuadrat jarak antara kedua benda. Hukum gravitasi ini sukses menjalaskan bagaimana benda cendrung jatuh menuju pusat bumi dan peredaran planet dan benda-benda langit lain mengelilingi matahari dalam sistem tata surya. Namun hukum gravitasi Newton ternyata tidak sepenuhnya tepat, beberapa hal dapat dijelaskan dengan hukum relativitas Einstein, namun demikian hukum relativitas Einstein juga dicurigai masih perlu diamandemen agar dapat menjelaskan fenomena alam dengan tepat.

  2. ISLAM DAN RADIKALISME: Upaya Antisipasi dan Penanggulangannya

    Directory of Open Access Journals (Sweden)

    Idrus Ruslan

    2017-02-01

    Full Text Available Sejak tragedi pemboman WTC tanggal 11 September 2001 yang disusul dengan rangkaian peledakan bom di sejumlah negara, banyak orang non Muslim yang berasumsi bahwa ajaran Islam identik dengan radikalisme. Walaupun assumsi yang berkembang itu dapat dimaklumi, namun keyakinan tersebut tentu saja tidak sepenuhnya benar. Karena meskipun terdapat sekelompok orang Islam yang berbuat radikal, akan tetapi mayoritas Muslim justru bertentangan dengan mereka. Lagi pula, jika dicermati secara mendalam, sesungguhnya Islam sama sekali tidak mentolerir tindakan radikal. Ia adalah agama kasih sayang yang sangat mendodrong penganutnya untuk berbuat baik terhadap orang lain, termasuk kepada orang-orang non-Muslim. Artikel ini menawarkan beberapa upaya strategis dalam mengantisipasi dan menanggulangi bahaya radikalisme-terorisme.

  3. Positron annihilation in solids: positronium diffusion; Annihilation du positon dans les solides diffusion du positonium

    Energy Technology Data Exchange (ETDEWEB)

    Paulin, R. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1969-04-01

    The existence of two slow components in life-time spectrum of positron annihilation in silicium, aluminium and alkaline-earth oxides powders is established. These two long mean-lives {approx_equal} 10{sup -9} s and {approx_equal} 10{sup -7} s result from annihilation, inside and outside the grains respectively, of ortho-positronium formed in defects present in ionic crystals investigated. Dynamic behaviour of Ps, so revealed, is analyzed in terms of diffusion in excellent agreement with experiment. Diffusion constants of the order of 10{sup -4} cm{sup 2} sec{sup -1} and mean path before annihilation from 50 to 300 Angstrom are measured. From 100 to 500 K the temperature influence upon diffusion process is effective only in SiO{sub 2} where activation energy is found about 10{sup -2} eV. The p-Ps zero point energy evaluated by angular correlation gives the order of magnitude for defects dimensions and diffusion mean-time. Finally, o-Ps behaviour in space between grains, where its interaction with atmospheric gases can be only detected, is analysed. (author) [French] Nous mettons en evidence l'existence de deux composantes lentes dans le spectre de temps de vie du positon avant annihilation dans des poudres d'oxydes alcalinoterreux d'alumine et de silice. Ces deux longues vies moyennes {approx_equal} 10{sup -9} s et {approx_equal} 10{sup -7} s resultent respectivement de l'annihilation a l'interieur et a l'exterieur des grains de l'ortho-positonium forme dans certains defauts presents dans les cristaux ioniques etudies. L'analyse des proprietes dynamiques du Ps ainsi revelees, est effectuee en termes de diffusion en excellent accord avec l'experience. Des constantes de diffusion de l'ordre de 10{sup -4} cm{sup 2} sec{sup -1} et des parcours moyens avant annihilation variant de 50 a 300 Angstrom sont ainsi mesures. Entre 100 et 500 K l'influence de la temperature sur le processus de diffusion n'est sensible

  4. DIVERSITAS DAN KERAPATAN MANGROVE, GASTROPODA DAN BIVALVIA DI ESTUARI PERANCAK, BALI

    OpenAIRE

    Susiana; Ali, Syamsu Alam; Rukminasari, Nita

    2011-01-01

    Penelitian ini bertujuan membandingkan diversitas dan kerapatan mangrove dengan kepadatan gastropoda dan bivalvia di mangrove alami dan rehabilitasi. Pengukuran ekosistem mangrove menggunakan transek kuadrat 10 m x 10 m. Kelimpahan dan kepadatan gastropoda dan bialvia menggunakan transek kuadrat berukuran 1 m x 1 m. Analisis nMDS, cluster untuk melihat hubungan karekteristik mangrove alami dan rehabilitasi dianalisis secara deskriptif dan analisis regresi untuk mendetermi...

  5. DAKWAH DAN PEMBERDAYAAN PEREMPUAN

    Directory of Open Access Journals (Sweden)

    Siti Nurmahyati

    2017-02-01

    Full Text Available Da’wah is an attempt to persuade and influence others in realizing the teachings of Islam, to achieve worldly prosperity and welfare of the hereafter. The success was fueled by propaganda aspects are interrelated, anatara preachers, propaganda material, propaganda strategy, mad’u (target da’wah. The number of women in this country nearly half of people (49.36. therefore, it is important to empower women in da’wah to build their own people in consciousness and religious activities that provide the basics of life prosperous world and hereafter.   Dakwah merupakan suatu upaya untuk mengajak dan mempengaruhi orang lain dalam merealisasikan ajaran Islam, untuk mencapai tujuan kesejahteraan duniawi maupun kesejahteraan ukhrawi. Keberhasilan tersebut pun dipicu oleh berbagai aspek dakwah yang saling terkait, antara juru dakwah, materi dakwah, strategi dakwah, mad’u (sasaran dakwah. Jumlah kaum perempuan di negara ini hampir mencapai separuh dari jumlah masyarakatnya (49,36. Oleh karena itu, sangat penting sekali pemberdayaan perempuan dalam dakwah untuk membangun kaumnya sendiri dalam kesadaran dan aktivitas-aktivitas keagamaan yang memberikan dasar kehidupan sejahtera duniawi dan ukhrawi.

  6. ASIMETRI INFORMASI DAN UNDERPRICING

    Directory of Open Access Journals (Sweden)

    Tety Anggita Safitri

    2013-03-01

    Full Text Available Tujuan penelitian ini adalah untuk menguji pengaruh asimetri informasi terhadap underpricing. Penelitian ini menggunakan sampel 63 perusahaan yang melakukan penawaran umum perdana di Bursa Efek Indonesia dalam kurun waktu 2005-2010. Analisis data menggunakan regresi linier berganda, yaitu menguji proksi asimetri informasi yang terdiri atas ukuran perusahaan, umur perusahaan, proporsi saham yang ditawarkan kepada masyarakat, reputasi underwriter dan reputasi auditor terhadap underpricing. Hasil penelitian ini mengindikasikan bahwa reputasi underwriter dan reputasi auditor berpengaruh terhadap underpricing. Ukuran perusahaan, umur perusahaan dan proporsi saham yang ditawarkan tidak berpengaruh terhadap underpricing.The aim of this research is to examine the effect of assymetric information on underpricing. This research used a sample of 63 companies that make initial public offering on the Indonesia Stock Exchange in the period of 2005-2010. The data analysis is using multiple linear regression, which is testing the proxy of asymmetric information which consists of the firm size, the firm age, the proportion of shares offered to the public, underwriter reputation and auditor reputation on underpricing. This research indicates that underwriter reputation and auditor reputation have a significant effect on underpricing. The firm size, the firm age and the proportion of shares offered to the public have no significant effect on underpricing.

  7. Les règles de Heredia : une nouvelle voie pour protéger la vie ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    1 févr. 2011 ... Prenons par exemple un employé qui, dans le passé, a traîné son patron devant la justice. ... Tandis que la Cour suprême du Pérou attend une loi sur la ... les noms des employés mêlés à des conflits du travail ne doivent pas se ... qui permettent d'identifier des mineurs ou des personnes handicapées ou ...

  8. [The cultural history of palliative care in primitive societies: an integrative review].

    Science.gov (United States)

    Siles González, José; Solano Ruiz, Maria Del Carmen

    2012-08-01

    The objective of this study is to describe the evolution of palliative care in order to reflect on the possibility of its origin in primitive cultures and their relationship with the beginnings of the cult of the dead. It describes the change in the symbolic structures and social interactions involved in palliative care during prehistory: functional unit, functional framework and functional element. The theoretical framework is based on cultural history, the dialectical structural model and symbolic interactionism. Categorization techniques, cultural history and dialectic structuralism analyses were performed. Palliative care existed in primitive societies, mostly associated with the rites of passage with a high symbolic content. The social structures - functional unit, functional framework and functional element - are the pillars that supported palliative care in prehistory societies.

  9. New software library of geometrical primitives for modelling of solids used in Monte Carlo detector simulations

    CERN Multimedia

    CERN. Geneva

    2012-01-01

    We present our effort for the creation of a new software library of geometrical primitives, which are used for solid modelling in Monte Carlo detector simulations. We plan to replace and unify current geometrical primitive classes in the CERN software projects Geant4 and ROOT with this library. Each solid is represented by a C++ class with methods suited for measuring distances of particles from the surface of a solid and for determination as to whether the particles are located inside, outside or on the surface of the solid. We use numerical tolerance for determining whether the particles are located on the surface. The class methods also contain basic support for visualization. We use dedicated test suites for validation of the shape codes. These include also special performance and numerical value comparison tests for help with analysis of possible candidates of class methods as well as to verify that our new implementation proposals were designed and implemented properly. Currently, bridge classes are u...

  10. Listening to Quackery: Reading John Wesley's Primitive Physic in an Age of Health Care Reform.

    Science.gov (United States)

    Skinner, Daniel; Schneider, Adam

    2016-11-25

    This article uses a reading of John Wesley's Primitive Physic, or An Easy and Natural Method of Curing Most Diseases (1747) to resist the common rejection-often as "quackery"-of Wesley's treatments for common maladies. We engage Wesley not because he was right but because his approach offers useful moments of pause in light of contemporary medical epistemology. Wesley's recommendations were primarily oriented towards the categories of personal responsibility and capability, but he also sought to empower individuals-especially the poor-with the knowledge to safely and affordably treat maladies of their own. We leverage Primitive Physic to rethink contemporary medical knowledge production, especially as sanctioned by randomized clinical trials and legitimate views of experience and contemporary institutions such as the AMA. Ultimately, we suggest that the medical humanities has a key role to play in mining the discarded and dismissed for what they can tell scholars about medical knowledge.

  11. Western Imperialism Against Primitive Communism. A New Reading of Rosa Luxemburg’s Economic Writings

    Directory of Open Access Journals (Sweden)

    Michael Löwy

    2012-01-01

    Full Text Available The discussion on Rosa Luxemburg’s theories of imperialism hasmainly focused on the economic argument - the schemes of reproduction, theprocess of circulation, the need for “external” markets, etc. There is howeveranother dimension, at least as important : the struggle of imperialism againstpre-capitalist economies, the ruthless destruction of “natural” and peasant economies,many of them being forms of primitive communism. Luxemburg’sinterest for primitive communist societies is documented by her Introductionto Political Economy and the imperialist war against them is discussed both inthis work and in the last chapters of The Accumulation of Capital. A whollyoriginal approach to the evolution of social formations, running counter tolinear “progressive” views of bourgeois ideology, is outlined in these reflections. Present indigenous struggles e.g. in Latin America, against multinational oil or mining companies, illustrate the topicality of Rosa Luxemburg’s argument in the 21th century.

  12. Clinical and pathological characteristics of primitive neuroectodermal tumor of the cerebral

    International Nuclear Information System (INIS)

    Fu Jun; Zhou Youxin; Xu Feng; Ye Ming; Zhou Dai; Bao Yaodong; Kang Suya

    2004-01-01

    Objective: To study the features of the cerebral primitive neuroectodermal tumor (PNET) in the clinical manifestation and in the histogenesis, morphology. Methods: Seven cases of cerebral PNET was analyzed with their clinical manifestations, histologic and immunohistochemical results. Results: Five patients of this group were children or young adults. Seven tumors were composed of primitive cells with focal evidence of glial or neuronal differentiation. Five out seven expressed NSE, one out seven expressed Syn, two out seven expressed CD99 and only one case expressed Vimentin, None expressed GFAP and S-100. CT findings were a homogeneous high density or heterogeneous mass. MR findings were high signal intensity both on T1 and T2 images. Conclusion: To diagnose the cerebral PNET depends on pathology and cerebral PNET have poor prognosis

  13. Organic cofactors participated more frequently than transition metals in redox reactions of primitive proteins.

    Science.gov (United States)

    Ji, Hong-Fang; Chen, Lei; Zhang, Hong-Yu

    2008-08-01

    Protein redox reactions are one of the most basic and important biochemical actions. As amino acids are weak redox mediators, most protein redox functions are undertaken by protein cofactors, which include organic ligands and transition metal ions. Since both kinds of redox cofactors were available in the pre-protein RNA world, it is challenging to explore which one was more involved in redox processes of primitive proteins? In this paper, using an examination of the redox cofactor usage of putative ancient proteins, we infer that organic ligands participated more frequently than transition metals in redox reactions of primitive proteins, at least as protein cofactors. This is further supported by the relative abundance of amino acids in the primordial world. Supplementary material for this article can be found on the BioEssays website. (c) 2008 Wiley Periodicals, Inc.

  14. John Wesley’s medical guide Primitive Physick from 1747: science, charlatanism or social medicine?

    Directory of Open Access Journals (Sweden)

    Helmut Renders

    2011-05-01

    Full Text Available In 1747, John Wesley, spiritus rector of the Methodist movement, published the first edition of his medical guide Primitive Physic[k]. What was its purpose in a world where the Royal Academy, herbalists, healers / as, exorcists and quacks competed for the attention of the population? What is its legacy and limitation, considering the different interests of contemporary religious movements in Brazil? The article introduces the different groups who promoted or pretended to promote health in 18th century England and compares the contents of the guide Primitive Physic [k] with their proposals and therapeutic strategies. The conclusion is that a significant portion of the guide consists of guidelines of the Royal Academy of Medicine, but that it always favors homemade remedies with ingredients available to humbler classes. In relation to the socalled Spiritual Physick, prayer is mentioned as a complementary measure, but the practice of exorcism is totally ignored.

  15. Dispossessing Urbanization: Urban Marxism in the Face of the Problem of Primitive Accumulation

    OpenAIRE

    Piotr Juskowiak

    2015-01-01

    The article is a complex attempt to present the achievements of the broadly understood urban Marxism in the field of reinterpretation of the classic concept from the cards of Capital – “primitive accumulation”. Drawing on theories of such scholars as David Harvey (“accumulation by dispossession”) or Saskia Sassen (“expulsions”), the author points to the possible ways to operationalize the concept of “dispossessing urbanization”. Inspired by the theorizations of autonomist Marxists (Antonio Ne...

  16. Abundances of presolar silicon carbide grains in primitive meteorites determined by NanoSIMS

    Science.gov (United States)

    Davidson, Jemma; Busemann, Henner; Nittler, Larry R.; Alexander, Conel M. O.'D.; Orthous-Daunay, François-Régis; Franchi, Ian A.; Hoppe, Peter

    2014-08-01

    It has been suggested that the matrices of all chondrites are dominated by a common material with Ivuna-like (CI) abundances of volatiles, presolar grains and insoluble organic matter (IOM) (e.g., Alexander, 2005). However, matrix-normalized abundances of presolar silicon carbide (SiC) grains estimated from their noble gas components show significant variations in even the most primitive chondrites (Huss and Lewis, 1995; Huss et al., 2003), in contradiction to there being a common chondrite matrix material. Here we report presolar SiC abundances determined by NanoSIMS raster ion imaging of IOM extracted from primitive members of different meteorite groups. We show that presolar SiC abundance determinations are comparable between NanoSIMS instruments located at three different institutes, between residues prepared by different demineralization techniques, and between microtomed and non-microtomed samples. Our derived SiC abundances in CR chondrites are comparable to those found in the CI chondrites (∼30 ppm) and are much higher than previously determined by noble gas analyses. The revised higher CR SiC abundances are consistent with the CRs being amongst the most primitive chondrites in terms of the isotopic compositions and disordered nature of their organic matter. Similar abundances between CR1, CR2, and CR3 chondrites indicate aqueous alteration on the CR chondrite parent body has not progressively destroyed SiC grains in them. A low SiC abundance for the reduced CV3 RBT 04133 can be explained by parent body thermal metamorphism at an estimated temperature of ∼440 °C. Minor differences between primitive members of other meteorite classes, which did not experience such high temperatures, may be explained by prolonged oxidation at lower temperatures under which SiC grains formed outer layers of SiO2 that were not thermodynamically stable, leading to progressive degassing/destruction of SiC.

  17. Lower Virial Coefficients of Primitive Models of Polar and Associating Fluids.

    Czech Academy of Sciences Publication Activity Database

    Rouha, M.; Nezbeda, Ivo

    2007-01-01

    Roč. 134, 1-3 (2007) , s. 107-110 Sp. Iss. SI ISSN 0167-7322 R&D Projects: GA AV ČR(CZ) IAA4072303; GA AV ČR(CZ) 1ET400720409 Institutional research plan: CEZ:AV0Z40720504 Keywords : primitive models * virial coefficients * metropolis like monte-carlo integration Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 0.982, year: 2007

  18. Enslaved African Labour in the Americas: from primitive accumulation to manufacture with racial violence

    OpenAIRE

    Higginbottom, Andy

    2018-01-01

    This paper reconceptualises Marx’s value theory in an analysis of the enslavement of African Americans as a part of the capitalist mode of production with its own special characteristics. Synthesising from the literature, I argue that sugar plantation slavery from the sixteenth into the nineteenth century had a duel relation concerning the debate over primitive accumulation vs. capitalism from the start. The plantation did represent an early form of specifically capitalist production, in that...

  19. Primitive myxoid mesenchymal tumor of infancy: a report of a further case with locally aggressive behavior.

    LENUS (Irish Health Repository)

    Mulligan, Linda

    2011-01-01

    We report a case of an 8-month-old child with a primitive myxoid mesenchymal tumor of infancy arising in the thenar eminence. The lesion recurred after conservative excision and was ultimately nonresponsive to chemotherapy, necessitating partial amputation. The patient remains free of disease 5 years after this radical surgery. This is the 1st report of such a tumor since it was initially described by Alaggio and colleagues in 2006. The pathologic differential diagnosis is discussed.

  20. Node Primitives: an open end-user programming platform for social robots

    OpenAIRE

    Coronado, Enrique; Mastrogiovanni, Fulvio; Venture, Gentiane

    2017-01-01

    With the expected adoption of robots able to seamlessly and intuitively interact with people in real-world scenarios, the need arises to provide non-technically-skilled users with easy-to-understand paradigms for customising robot behaviors. In this paper, we present an interaction design robot programming platform for enabling multidisciplinary social robot research and applications. This platform is referred to Node Primitives (NEP) and consists of two main parts. On the one hand, a ZeroMQ ...

  1. Primitive myxoid mesenchymal tumor of infancy: a report of a further case with locally aggressive behavior.

    LENUS (Irish Health Repository)

    Mulligan, Linda

    2012-02-01

    We report a case of an 8-month-old child with a primitive myxoid mesenchymal tumor of infancy arising in the thenar eminence. The lesion recurred after conservative excision and was ultimately nonresponsive to chemotherapy, necessitating partial amputation. The patient remains free of disease 5 years after this radical surgery. This is the 1st report of such a tumor since it was initially described by Alaggio and colleagues in 2006. The pathologic differential diagnosis is discussed.

  2. Canonical Wnt signaling induces a primitive endoderm metastable state in mouse embryonic stem cells.

    Science.gov (United States)

    Price, Feodor D; Yin, Hang; Jones, Andrew; van Ijcken, Wilfred; Grosveld, Frank; Rudnicki, Michael A

    2013-04-01

    Activation of the canonical Wnt signaling pathway synergizes with leukemia inhibitory factor (LIF) to maintain pluripotency of mouse embryonic stem cells (mESCs). However, in the absence of LIF, Wnt signaling is unable to maintain ESCs in the undifferentiated state. To investigate the role of canonical Wnt signaling in pluripotency and lineage specification, we expressed Wnt3a in mESCs and characterized them in growth and differentiation. We found that activated canonical Wnt signaling induced the formation of a reversible metastable primitive endoderm state in mESC. Upon subsequent differentiation, Wnt3a-stimulated mESCs gave rise to large quantities of visceral endoderm. Furthermore, we determined that the ability of canonical Wnt signaling to induce a metastable primitive endoderm state was mediated by Tbx3. Our data demonstrates a specific role for canonical Wnt signaling in promoting pluripotency while at the same time priming cells for subsequent differentiation into the primitive endoderm lineage. Copyright © 2013 AlphaMed Press.

  3. Rho kinase activity controls directional cell movements during primitive streak formation in the rabbit embryo.

    Science.gov (United States)

    Stankova, Viktoria; Tsikolia, Nikoloz; Viebahn, Christoph

    2015-01-01

    During animal gastrulation, the specification of the embryonic axes is accompanied by epithelio-mesenchymal transition (EMT), the first major change in cell shape after fertilization. EMT takes place in disparate topographical arrangements, such as the circular blastopore of amphibians, the straight primitive streak of birds and mammals or in intermediate gastrulation forms of other amniotes such as reptiles. Planar cell movements are prime candidates to arrange specific modes of gastrulation but there is no consensus view on their role in different vertebrate classes. Here, we test the impact of interfering with Rho kinase-mediated cell movements on gastrulation topography in blastocysts of the rabbit, which has a flat embryonic disc typical for most mammals. Time-lapse video microscopy, electron microscopy, gene expression and morphometric analyses of the effect of inhibiting ROCK activity showed - besides normal specification of the organizer region - a dose-dependent disruption of primitive streak formation; this disruption resulted in circular, arc-shaped or intermediate forms, reminiscent of those found in amphibians, fishes and reptiles. Our results reveal a crucial role of ROCK-controlled directional cell movements during rabbit primitive streak formation and highlight the possibility that temporal and spatial modulation of cell movements were instrumental for the evolution of gastrulation forms. © 2015. Published by The Company of Biologists Ltd.

  4. Wnt signaling controls the specification of definitive and primitive hematopoiesis from human pluripotent stem cells.

    Science.gov (United States)

    Sturgeon, Christopher M; Ditadi, Andrea; Awong, Geneve; Kennedy, Marion; Keller, Gordon

    2014-06-01

    Efforts to derive hematopoietic stem cells (HSCs) from human pluripotent stem cells (hPSCs) are complicated by the fact that embryonic hematopoiesis consists of two programs, primitive and definitive, that differ in developmental potential. As only definitive hematopoiesis generates HSCs, understanding how this program develops is essential for being able to produce this cell population in vitro. Here we show that both hematopoietic programs transition through hemogenic endothelial intermediates and develop from KDR(+)CD34(-)CD144(-) progenitors that are distinguished by CD235a expression. Generation of primitive progenitors (KDR(+)CD235a(+)) depends on stage-specific activin-nodal signaling and inhibition of the Wnt-β-catenin pathway, whereas specification of definitive progenitors (KDR(+)CD235a(-)) requires Wnt-β-catenin signaling during this same time frame. Together, these findings establish simple selective differentiation strategies for the generation of primitive or definitive hematopoietic progenitors by Wnt-β-catenin manipulation, and in doing so provide access to enriched populations for future studies on hPSC-derived hematopoietic development.

  5. Development of membrane mechanical function during terminal stages of primitive erythropoiesis in mice.

    Science.gov (United States)

    Waugh, Richard E; Huang, Yu-Shan; Arif, Binish J; Bauserman, Richard; Palis, James

    2013-04-01

    During murine embryogenesis, primitive erythroblasts enter the circulation as immature nucleated cells and progressively mature as a semisynchronous cohort, enucleating between E12.5 and E16.5. In this report, we examine the mechanical properties of these cells to determine how their mechanical development differs from that of definitive erythroid cells, which mature extravascularly in protected marrow microenvironments. Primitive erythroid cells acquire normal membrane deformability by E12.5 (i.e., as late stage erythroblasts) and maintain the same level of surface stiffness through E17.5. During this same period, the strength of association between the membrane bilayer and the underlying skeleton increases, as indicated by an approximate doubling of the energy required to separate bilayer from skeleton. At the same time, these cells undergo dramatic changes in surface area and volume, losing 35% of their surface area and 50% of their volume from E14.5 to E17.5. Interestingly, membrane remodeling proceeded regardless of whether the cells completed enucleation. These data suggest that in primitive erythroid cells, unlike their definitive counterparts, the critical maturational processes of membrane remodeling and enucleation are uncoupled. Copyright © 2013 ISEH - Society for Hematology and Stem Cells. Published by Elsevier Inc. All rights reserved.

  6. The logical primitives of thought: Empirical foundations for compositional cognitive models.

    Science.gov (United States)

    Piantadosi, Steven T; Tenenbaum, Joshua B; Goodman, Noah D

    2016-07-01

    The notion of a compositional language of thought (LOT) has been central in computational accounts of cognition from earliest attempts (Boole, 1854; Fodor, 1975) to the present day (Feldman, 2000; Penn, Holyoak, & Povinelli, 2008; Fodor, 2008; Kemp, 2012; Goodman, Tenenbaum, & Gerstenberg, 2015). Recent modeling work shows how statistical inferences over compositionally structured hypothesis spaces might explain learning and development across a variety of domains. However, the primitive components of such representations are typically assumed a priori by modelers and theoreticians rather than determined empirically. We show how different sets of LOT primitives, embedded in a psychologically realistic approximate Bayesian inference framework, systematically predict distinct learning curves in rule-based concept learning experiments. We use this feature of LOT models to design a set of large-scale concept learning experiments that can determine the most likely primitives for psychological concepts involving Boolean connectives and quantification. Subjects' inferences are most consistent with a rich (nonminimal) set of Boolean operations, including first-order, but not second-order, quantification. Our results more generally show how specific LOT theories can be distinguished empirically. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

  7. Application of a primitive variable Newton's method for the calculation of an axisymmetric laminar diffusion flame

    International Nuclear Information System (INIS)

    Xu, Yuenong; Smooke, M.D.

    1993-01-01

    In this paper we present a primitive variable Newton-based solution method with a block-line linear equation solver for the calculation of reacting flows. The present approach is compared with the stream function-vorticity Newton's method and the SIMPLER algorithm on the calculation of a system of fully elliptic equations governing an axisymmetric methane-air laminar diffusion flame. The chemical reaction is modeled by the flame sheet approximation. The numerical solution agrees well with experimental data in the major chemical species. The comparison of three sets of numerical results indicates that the stream function-vorticity solution using the approximate boundary conditions reported in the previous calculations predicts a longer flame length and a broader flame shape. With a new set of modified vorticity boundary conditions, we obtain agreement between the primitive variable and stream function-vorticity solutions. The primitive variable Newton's method converges much faster than the other two methods. Because of much less computer memory required for the block-line tridiagonal solver compared to a direct solver, the present approach makes it possible to calculate multidimensional flames with detailed reaction mechanisms. The SIMPLER algorithm shows a slow convergence rate compared to the other two methods in the present calculation

  8. A primitive Late Pliocene cheetah, and evolution of the cheetah lineage

    Science.gov (United States)

    Christiansen, Per; Mazák, Ji H.

    2009-01-01

    The cheetah lineage is a group of large, slender, and long-limbed cats with a distinctive skull and dental morphology, of which only the extant cheetah (Acinonyx jubatus) is present today. The lineage is characterized by having abbreviated, tall, and domed crania, and a trenchant dentition with a much reduced, posteriorly placed protocone on the upper carnassial. In this article, we report on a new discovery of a Late Pliocene specimen from China with an estimated age of ≈2.2–2.5 million years, making it one of the oldest specimens known to date. A cladistic analysis confirmed that it is the most primitive cheetah known, and it shares a number of unambiguous derived cranial traits with the Acinonyx lineage, but has more primitive dentition than previously known cheetahs, demonstrating that the many unusual skull and dental characters hitherto considered characteristic of cheetahs evolved in a gradual fashion. Isolated teeth of primitive cheetahs may not be recognizable as such, but can be confused with, for instance, those of leopards or other similar-sized pantherine cats or pumas. The age and morphology of the new specimen supports an Old World origin of the cheetah lineage, not a New World one, as has been suggested. We name the new species Acinonyx kurteni in honor of the late Björn Kurtén. PMID:19114651

  9. Looking for the most ``primitive'' organism(s) on Earth today: the state of the art

    Science.gov (United States)

    Forterre, Patrick

    1995-02-01

    Molecular phylogenetic studies have revealed a tripartite division of the living world into two procaryotic groups, Bacteria and Archaea, and one eucaryotic group, Eucarya. Which group is the most "primitive"? Which groups are sister? The answer to these questions would help to delineate the characters of the last common ancestor to all living beings, as a first step to reconstruct the earliest periods of biological evolution on Earth. The current "Procaryotic dogma" claims that procaryotes are primitive. Since the ancestor of Archaea was most probably a hyperthermophile, and since bacteria too might have originated from hyperthermophiles, the procaryotic dogma has been recently connected to the hot origin of life hypothesis. However, the notion that present-day hyperthermophiles are primitive has been challenged by recent findings, in these unique microorganisms, of very elaborate adaptative devices for life at high temperature. Accordingly, I discuss here alternative hypotheses that challenge the procaryotic dogma, such as the idea of a universal ancestor with molecular features in between those of eucaryotes and procaryotes, or the origin of procaryotes via thermophilic adaptation. Clearly, major evolutionary questions about early cellular evolution on Earth remain to be settled before we can speculate with confidence about which kinds of life might have appeared on other planets.

  10. Primitive neuroectodermal tumour of the kidney with vena caval and atrial tumour thrombus: a case report

    Directory of Open Access Journals (Sweden)

    Ong Poh

    2008-08-01

    Full Text Available Abstract Introduction Renal primitive neuroectodermal tumour is an extremely rare malignancy. Case presentation A 21-year-old woman presented with microscopic haematuria, a palpable right loin mass, dyspnoea, dizziness and fatigue. Initial ultrasound scan of the kidneys revealed an 11 cm right renal mass with venous extension into the inferior vena cava. Computed tomography of the thorax and abdomen revealed an extension of the large renal mass into the right renal vein, inferior vena cava and up to the right atrium. A small paracaval lymph node was noted and three small metastatic nodules were identified within the lung parenchyma. The patient underwent a radical nephrectomy and inferior vena caval tumour (level IV thrombectomy with cardiopulmonary bypass and deep hypothermic circulatory arrest. Immunohistochemical staining of the specimen showed a highly specific cluster of differentiation (CD 99, thus confirming the diagnosis of a primitive neuroectodermal tumour. Conclusion It is important that a renal primitive neuroectodermal tumour be considered, particularly in young patients with a renal mass and extensive thrombus.

  11. A primitive Late Pliocene cheetah, and evolution of the cheetah lineage.

    Science.gov (United States)

    Christiansen, Per; Mazák, Ji H

    2009-01-13

    The cheetah lineage is a group of large, slender, and long-limbed cats with a distinctive skull and dental morphology, of which only the extant cheetah (Acinonyx jubatus) is present today. The lineage is characterized by having abbreviated, tall, and domed crania, and a trenchant dentition with a much reduced, posteriorly placed protocone on the upper carnassial. In this article, we report on a new discovery of a Late Pliocene specimen from China with an estimated age of approximately 2.2-2.5 million years, making it one of the oldest specimens known to date. A cladistic analysis confirmed that it is the most primitive cheetah known, and it shares a number of unambiguous derived cranial traits with the Acinonyx lineage, but has more primitive dentition than previously known cheetahs, demonstrating that the many unusual skull and dental characters hitherto considered characteristic of cheetahs evolved in a gradual fashion. Isolated teeth of primitive cheetahs may not be recognizable as such, but can be confused with, for instance, those of leopards or other similar-sized pantherine cats or pumas. The age and morphology of the new specimen supports an Old World origin of the cheetah lineage, not a New World one, as has been suggested. We name the new species Acinonyx kurteni in honor of the late Björn Kurtén.

  12. Lipofectamine and related cationic lipids strongly improve adenoviral infection efficiency of primitive human hematopoietic cells.

    Science.gov (United States)

    Byk, T; Haddada, H; Vainchenker, W; Louache, F

    1998-11-20

    Adenoviral vectors have the potential to infect a large number of cell types including quiescent cells. Their use in hematopoietic cells is limited by the episomal form of their DNA, leading to transgene loss in the progeny cells. However, the use of this vector may be interesting for short-term in vitro modifications of primitive human hematopoietic cells. Therefore, we have investigated the ability of adenovirus to transduce cord blood CD34+ cells. Several promoters were tested using the lacZ reporter gene. The PGK and CMV promoters induced transgene expression in 18-25% of the cells, whereas the HTLV-I and especially the RSV promoter were almost inactive. To improve infection efficiency, adenovirus was complexed with cationic lipids. Lipofectamine, Cellfectin, and RPR120535b, but not Lipofectin, Lipofectace, or DOTAP, markedly improved transgene expression in CD34+ cells (from 19 to 35%). Lipofectamine strongly enhanced infection efficiency of the poorly infectable primitive CD34+CD38low cells (from 11 to 28%) whereas the more mature CD34+CD38+ cells were only slightly affected (from 24 to 31%). Lipofectamine tripled the infection of CFU-GMs and LTC-ICs derived from the CD34+CD38low cell fraction (from 4 to 12% and from 5 to 16%, respectively) and doubled that of BFU-Es (from 13 to 26%). We conclude that cationic lipids can markedly increase the efficiency of adenovirus-mediated gene transfer into primitive hematopoietic cells.

  13. The language of geometry: Fast comprehension of geometrical primitives and rules in human adults and preschoolers

    Science.gov (United States)

    Amalric, Marie; Wang, Liping; Figueira, Santiago; Sigman, Mariano; Dehaene, Stanislas

    2017-01-01

    During language processing, humans form complex embedded representations from sequential inputs. Here, we ask whether a “geometrical language” with recursive embedding also underlies the human ability to encode sequences of spatial locations. We introduce a novel paradigm in which subjects are exposed to a sequence of spatial locations on an octagon, and are asked to predict future locations. The sequences vary in complexity according to a well-defined language comprising elementary primitives and recursive rules. A detailed analysis of error patterns indicates that primitives of symmetry and rotation are spontaneously detected and used by adults, preschoolers, and adult members of an indigene group in the Amazon, the Munduruku, who have a restricted numerical and geometrical lexicon and limited access to schooling. Furthermore, subjects readily combine these geometrical primitives into hierarchically organized expressions. By evaluating a large set of such combinations, we obtained a first view of the language needed to account for the representation of visuospatial sequences in humans, and conclude that they encode visuospatial sequences by minimizing the complexity of the structured expressions that capture them. PMID:28125595

  14. Vie-Nouvelle

    African Journals Online (AJOL)

    Chrystelle ATINKPAHOUN

    influent of wastewater treatment plant, greywater, etc. (Kafi et al. ... pollutant loadings related to suspended solids, bound metal ... treatment system for the domestic wastewater. (greywater and ...... thesis, Polytechnic Institute of Lorraine,. Nancy ...

  15. Eau, terre et vie

    International Development Research Centre (IDRC) Digital Library (Canada)

    La même chose s'est produite pour les photographies. ...... cents millions de rupiahs provenant des fonds du réseau de sécurité sociale de la Banque mondiale. ...... De plus, pendant la guerre, la forêt naturelle de la région a été sérieusement ...... les agriculteurs ont tendance à ignorer les nouvelles pratiques de gestion des ...

  16. DAMPAK NEGATIF PERKEMBANGAN TEKNOLOGI INFORMATIKA DAN KOMUNIKASI DAN CARA ANTISIFASINYA

    Directory of Open Access Journals (Sweden)

    I Gede Ratnaya

    2011-03-01

    Full Text Available Sampai saat ini perkembangan ilmu pengetahuan telah menghantarkan masyarakat menuju babak baru yaitu babak yang memanfaatkan peralatan-peralatan yang merupakan hasil dari teknologi. Penggunaan tenaga manusia yang semakin hari semakin kecil volumenya sering kali menyebabkan orang kehilangan pekerjaannya karena tugasnya telah tergantikan oleh peralatan atau mesin. Sebagai sarana penyampaian informasi dan komunikasi, komputer bisa dipakai sebagai sarana berinternetan. Lewat internet orang bisa mencari bermacam-macam informasi dan berkomunikasi. Peran yang dapat diberikan oleh aplikasi teknologi informasi ini adalah mendapatkan informasi untuk kehidupan pribadi seperti informasi tentang kesehatan, hobi, rekreasi, dan rohani. Selain memberikan keuntungan, ternyata peralatan teknologi informasi dan komunikasi juga memberikan dampak negatif bagi penggunanya. Dampak negatif tersebut muncul sebagai akibat dari penggunaan yang salah atau tidak bertanggung jawab dari yang menggunakan. Beberapa dampak negatif tersebut adalah 1. Anak lebih banyak menghabiskan waktu menonton TV ketimbang melakukan hal lainnya (seperti belajar dan olah raga, 2. Anak kehilangan kemampuan berbaur dengan masyarakat dan cenderung nyaman dengan kehidupan online, 3 Adanya pelanggaran hak cipta, 4.  Kejahatan di internet, 5. Penyebaran virus komputer, dan 6. Pornografi, perjudian, penipuan, tayangan kekerasan. Adapun cara mengatasi dampak-dampak negatif tersebut adalah : 1. Gunakan teknologi untuk menjalin hubungan dengan orang yang sudah dikenal, 2. Cari komunitas positif  yang sering melakukan pertemuan didunia nyata, 3. Perlunya penegakkan hukum yang berlaku dengan dibentuknya polisi internet, 4. Menghindari pemakaian telepon seluler yang berfitur canggih oleh anak-anak dibawah umur dan lebih mengawasi penggunaan telepon seluler, 5. Perbanyak membaca buku-buku yang bersifat edukatif dan bersifat keimanan serta aplikasi komputer yang bersifat mendidik, dan 6. Perlunya pengaturan

  17. KETERGANTUNGAN ONLINE GAME DAN PENANGANANNYA

    Directory of Open Access Journals (Sweden)

    Ridwan Syahran

    2015-06-01

    Full Text Available Penelitian ini dimaksudkan untuk mengetahui perilaku yang ditimbulkan dari kecanduan bermaian online game pada siswa SMP Negeri 1 Palu yang meliputi faktor-faktor penyebab kecanduan, keadaan psikologis yang ditimbulkan dari kecanduan bermain online game dan dampak-dampak yang ditimbulkan dari kecanduan bermain online game.Pendekatan penelitian ini adalah penelitian kualitatif dengan jenis penelitian studi kasus dengan berdasarkan responden dan informan sebagai bahan sumber data. Dalam proses pengumpulan data digunakan teknik observasi dan wawancara, dimana setelah data diperoleh selanjutnya dianalisis dengan menggunakan analisis deskriptif kualitatif.Berdasarkan hasil penelitian ini, bahwa subyek (RZ dan (MT, kedua subyek penelitian menjadi ketergantungan atau kecanduan untuk bermain online game yang dikarenakan tersedianya beberapa fasilitas pendukung untuk bermain game di rumah, adanya faktor sosial dari pertemanan dengan teman bermain dan keingintahuan yang sangat besar terhadap suatu jenis game. Penanganan ketergantungan game online dengan bantuan dari berbagai pihak terutama pihak sekolah memberikan kepercayaan kepada konselor sekolah atau guru BK untuk mengadakan seminar kepada orang tua siswa tentang game online dan masalah yang akan ditimbulkan, mengatur waktu belajar dan bermain anak, memasukkan materi tentang game online dan dampaknya kepada siswa serta memberikan penyaluran yang baik dalam memilih game yang edukatif serta Menjalin komunikasi interpersonal agar anak dapat terbuka dengan orang tua.

  18. Influence of sediment recycling on the trace element composition of primitive arc lavas

    Science.gov (United States)

    Collinet, M.; Jagoutz, O. E.

    2017-12-01

    Primitive calc-alkaline lavas from continental arcs are, on average, enriched in incompatible elements compared to those from intra-oceanic arcs. This relative enrichment is observed in different groups of trace elements: LILE (e.g. K, Rb), LREE to MREE (La-Dy) and HFSE (e.g.Zr, Nb) and is thought to result from (1) a transfer of material from the subducting slab to the mantle wedge at higher temperature than in intra-oceanic margins and/or (2) lower average degrees of melting in the mantle wedge, as a consequence of thicker overlying crusts and higher average pressures of melting. In addition to thicker overlying crusts and generally higher slab temperatures, continental margins are characterized by larger volumes of rock exposed above sea level and enhanced erosion rates compared to intra-oceanic arcs. As several geochemical signatures of arc lavas attest to the importance of sediment recycling in subduction zones, we explore the possibility that the high concentrations of incompatible elements in primitive lavas from continental arcs directly reflect a larger input of sediment to the subduction system. Previous efforts to quantify the sediment flux to oceanic trenches focused on the thickness of pelagic and hemipelagic sediments on top of the plate entering the subduction zone (Plank and Langmuir, 1993, Nature). These estimates primarily relied on the sediment layer drilled outboard from the subduction system and likely underestimate the volume of sediment derived from the arc itself. Accordingly, we find that such estimates of sediment flux do not correlate with the concentration of incompatible elements in primitive arc lavas. To account for regional contributions of coarser detrital sediments, usually delivered to oceanic trenches by turbidity currents, we apply to arc segments a model that quantifies the sediment load of rivers based on the average relief, area, temperature and runoff of their respective drainage areas (Syvitski et al., 2003, Sediment. Geol

  19. Noble Gases in Insoluble Organic Matter in the Very Primitive Meteorites Bells, EET 92042 and GRO 95577

    Science.gov (United States)

    Busemann, H.; Alexander, C. M. O'd.; Nittler, L. R.; Wieler, R.

    2008-03-01

    Noble gas carrier phase Q in several primitive meteorites is not attacked by Pyridine, in contrast to Orgueil, as reported previously. IOM in CR chondrites does not indicate high-temperature alteration in the nebula.

  20. De novo appearance of primitive neuroectodermal tumor in a patient with systemic lupus erythematosus and moyamoya disease.

    Science.gov (United States)

    Park, D J; Kim, T J; Lee, H J; Lee, K E; Lee, S J; Seo, S R; Yoon, W; Moon, K S; Lee, K W; Lee, S S; Park, Y W

    2010-07-01

    Primitive neuroectodermal tumor is a rare brain tumor composed of undifferentiated or poorly differentiated neuroepithelial cells with a high malignant potential that usually occurs in children, and which is only occasionally encountered in adults. A 19-year-old female with systemic lupus erythematosus presented with right hemiparesis and a headache of 10 days duration. Brain magnetic resonance imaging showed a large solid mass with necrotic portions in the left frontoparietal lobe. Primitive neuroectodermal tumor was confirmed by a neuronavigator-guided brain biopsy. This is the first case report of primitive neuroectodermal tumor associated with systemic lupus erythematosus and moyamoya disease. This case demonstrates that brain tumors, such as primitive neuroectodermal tumor, should be included in the differential diagnosis of neurological manifestations in children and adolescent patients with systemic lupus erythematosus.

  1. Dosage of fission products in irradiated fuel treatment effluents (radio-chemical method); Dosage des produits de fission dans les effluents du traitement des combustibles irradies (methode radiochimique)

    Energy Technology Data Exchange (ETDEWEB)

    Auchapt, J [Commissariat a l' Energie Atomique, Marcoule (France). Centre d' Etudes Nucleaires

    1966-07-01

    The dosage methods presented here are applicable to relatively long-lived fission products present in the effluents resulting from irradiated fuel treatment processes (Sr - Cs - Ce - Zr - Nb - Ru - I). The methods are based on the same principle: - addition of a carrying-over agent - chemical separation over several purification stages, - determination of the chemical yield by calorimetry - counting of an aliquot liquid portion. (author) [French] Les methodes de dosage presentees concernent les produits de fission a vie relativement longue presents dans les effluents de traitement des combustibles irradies (Sr - Cs - Ce - Zr - Nb - Ru - I). Elles sont toutes basees sur le meme principe: - addition d'entraineur, - separation chimique en plusieurs stades de purification, - determination du rendement chimique par calorimetrie, - comptage d'une aliquote liquide. (auteur)

  2. Efficient and Rapid Derivation of Primitive Neural Stem Cells and Generation of Brain Subtype Neurons From Human Pluripotent Stem Cells

    OpenAIRE

    Yan, Yiping; Shin, Soojung; Jha, Balendu Shekhar; Liu, Qiuyue; Sheng, Jianting; Li, Fuhai; Zhan, Ming; Davis, Janine; Bharti, Kapil; Zeng, Xianmin; Rao, Mahendra; Malik, Nasir; Vemuri, Mohan C.

    2013-01-01

    This study developed a highly efficient serum-free pluripotent stem cell (PSC) neural induction medium that can induce human PSCs into primitive neural stem cells (NSCs) in 7 days, obviating the need for time-consuming, laborious embryoid body generation or rosette picking. This method of primitive NSC derivation sets the stage for the scalable production of clinically relevant neural cells for cell therapy applications in good manufacturing practice conditions.

  3. Mitas kaip kultūrų interpretacijų sankirta Cliffordo Geertzo antropologijoje | Le mythe comme un ensemble des interprétations des cultures dans l‘antropologie de Clifford Geertz

    Directory of Open Access Journals (Sweden)

    Neringa Mikalauskienė

    2007-01-01

    Full Text Available La méthode que Clifford Geertz appelle, lui-même, «une description dense» [thick description] peut être nommée une interprétation inductive parce qu’ici on passe de différentes formes de la culture aux conclusions générales: on commence par une analyse minutieuse («microscopique» des moindres phénomènes et on finit par des interprétations et des définitions plus globales. Le mythe se trouve introduit dans «les moindres phénomènes» et, en même temps, il apparaît comme agissant dans les différentes sphères de la vie. Le mythe «s’eparpille» tant dans le langage quotidien, tant dans les normes réglant la vie sociale que dans la religion.Pour Geertz le mythe est un système de symboles qui forme des motivations constantes de la conduite humaine. Ce système révèle une conception d’être qui se manifeste dans le quotidien de la sorte que les motivations de la conduite se montrent réellement. L’analyse du mythe, d’après Geertz, est inséparable du celle du rite qui fait, à son tour, partie du drame rituel où la distance entre le spectateur et l’acteur est abolie. La nature humaine, entraînée dans la magie du théâtre rituel, se voit transformée, et les êtres humains sont ainsi inscrits dans la société.Le mythe est un fait culturel concret et il peut surgir dans de différents domaines de la vie. Il est possible donc de le traiter comme un moyen d’approche de toute la culture parce que celle-ci n’est qu’une totalité des systèmes convergents de significations: de la religion, de l’art, de l’idéologie, du droit ect.Le mythe est lu, tout d’abord, comme un texte spécifique utile à l’analyse de la culture parce qu’il est un dépôt de symboles constants. Et la culture, d’après Geertz, effectue un contrôle symbolique de la conduite.L’analyse du mythe est une fiction an premier sens du mot fictio: «modelé», «fait». Cette analyse n’est rien d’autre qu’une prévision des

  4. Entre infini et extravagance : le romantisme français dans l’épistolaire de Juan María Gutiérrez

    Directory of Open Access Journals (Sweden)

    Ana Eugenia Vázquez

    2016-12-01

    Full Text Available Cet article a pour but d’analyser les figures de lecteurs construites par Florencio Varela et Mariquita Sánchez de Thompson dans les lettres qu’ils écrivent à Juan María Gutiérrez vers le début de l’année 1840. Les expériences de lecture représentées renvoient toujours aux auteurs romantiques français comme Victor Hugo ou George Sand. Or la réception du romantisme se conçoit différemment dans chaque cas : Mariquita se montre comme une lectrice romantique, sensible et enthousiaste, lisant pour s’identifier avec la vie et le destin tragique de ses auteurs préférés. Florencio Varela réprouve en revanche l’excès passionnel des pièces d’Hugo. Cette opposition reflète les dissidences que le romantisme européen, plus radical dans ses propositions esthétiques et politiques que le romantisme local, a posé pour une génération qui commençait à projeter la création d’une littérature national.

  5. «Que la vie du monde est infinie»: Montaigne y la tesis de la eternidad del mundo

    OpenAIRE

    Bayod, Jordi

    2011-01-01

    Montaigne insère en De la liberté de conscience un commentaire sur la destruction de la culture classique par les chrétiens qui ne peut que nous faire penser au  chapitre II, 5 des Discorsi de Machiavel. Or, le problème de fond examiné par le florentin dans ce chapitre, la brièveté de la mémoire humaine comme objection à la thèse de l’éternité du monde, semble avoir intéressé aussi l’auteur des Essais. C’est ce que suggèrent certaines pages de Des coches qui mettent expressément en question l...

  6. La mise en spectacle de la mort dans deux pièces du théâtre espagnol du Siècle d’Or

    Directory of Open Access Journals (Sweden)

    Odile Lasserre Dempure

    2012-08-01

    Full Text Available Dans Fuente Ovejuna (1613 de Lope de Vega et La serrana de la Vera (1613 de Luis Vélez de Guevara, la mort est spectacle. Cette mise en spectacle de la mort, qui doit être replacée dans le contexte d’une esthétique macabre caractéristique de la période baroque, s’articule sur de multiples réseaux de sens dont nous tentons de dégager quelques lignes directrices. Une lecture attentive de la façon dont la mort et le cadavre sont mis en scène permet de comprendre que pour l’imaginaire de l’époque, cette mise en spectacle de la mort est surtout mise en spectacle de la vie. La mort, effroyable mais bienfaisante, est une mort génératrice de vie.En Fuente Ovejuna (1613, de Lope de Vega, y en La Serrana de la Vera (1613, de Luis Vélez de Guevara, la muerte es un espectáculo. Esta representación de la muerte, que debe ser situada en el contexto de una estética macabra propia al barroco, adquiere múltiples significados que trataremos de determinar y poner en relieve. Una lectura atenta de la manera cómo la muerte y el cadáver son expuestos, nos permite deducir que para el imaginario de la época esta representación de la muerte es más que nada una representación de la vida. La muerte, espantosa pero benéfica, es una muerte generadora de vida.

  7. The epidemiology of mild cognitive impairment (MCI and Alzheimer’s disease (AD in community-living seniors: protocol of the MemoVie cohort study, Luxembourg

    Directory of Open Access Journals (Sweden)

    Perquin Magali

    2012-07-01

    Full Text Available Abstract Background Cognitive impairment and Alzheimer’s disease (AD are increasingly considered a major public health problem. The MemoVie cohort study aims to investigate the living conditions or risk factors under which the normal cognitive capacities of the senior population in Luxembourg (≥ 65 year-old evolve (1 to mild cognitive impairment (MCI – transitory non-clinical stage – and (2 to AD. Identifying MCI and AD predictors undeniably constitutes a challenge in public health in that it would allow interventions which could protect or delay the occurrence of cognitive disorders in elderly people. In addition, the MemoVie study sets out to generate hitherto unavailable data, and a comprehensive view of the elderly population in the country. Methods/design The study has been designed with a view to highlighting the prevalence in Luxembourg of MCI and AD in the first step of the survey, conducted among participants selected from a random sample of the general population. A prospective cohort is consequently set up in the second step, and appropriate follow-up of the non-demented participants allows improving the knowledge of the preclinical stage of MCI. Case-control designs are used for cross-sectional or retrospective comparisons between outcomes and biological or clinical factors. To ensure maximal reliability of the information collected, we decided to opt for structured face to face interviews. Besides health status, medical and family history, demographic and socio-cultural information are explored, as well as education, habitat network, social behavior, leisure and physical activities. As multilingualism is expected to challenge the cognitive alterations associated with pathological ageing, it is additionally investigated. Data relative to motor function, including balance, walk, limits of stability, history of falls and accidents are further detailed. Finally, biological examinations, including ApoE genetic polymorphism are

  8. Mixité sociale : les handicapés dans la société britannique 

    Directory of Open Access Journals (Sweden)

    Marie-Hélène Adveille

    2007-11-01

    Full Text Available Depuis la seconde moitié du XXe siècle le regard porté sur la place des handicapés dans la société, a changé de manière significative. Les personnes en situation de handicap qui n’étaient souvent vues auparavant que comme les bénéficiaires d’une aide charitable, ont acquis, grâce à l’action de nombreuses organisations, le droit d’être reconnues comme des individus devant jouir des mêmes droits que les personnes ordinaires. Cependant, bien que des changements aient été opérés dans la perception que les valides ont des handicapés, il n’en demeure pas moins que les personnes en situation de handicap sont toujours confrontées à de nombreux problèmes dans leur vie de tous les jours. La société a fait des progrès pour ce qui est des aides qu’elle apporte aux handicapés moteurs, en instituant par exemple qu’ils puissent avoir accès aux bâtiments publics ainsi qu’aux moyens de transport urbain, ferroviaire, aérien. Les difficultés des handicapés sensoriels (vue, ouie sont prises en compte, avec la mise en place, par exemple, des signaux sonores dans la cité, en favorisant la présence de chiens d’aveugle. Cependant l’accès aux droits fondamentaux de ceux qui présentent des handicaps mentaux (intellectuels et/ou psychiques est encore peu développé. C’est donc sur la politique d’intégration et d’inclusion dans la vie ordinaire des personnes présentant des handicaps intellectuels que portera principalement cette étude. Nous aborderons en premier lieu la législation mise en œuvre pour favoriser leur insertion dans la société britannique, puis nous étudierons la façon dont les enfants sont intégrés dans le système scolaire. Enfin, les arguments qui soulignent l’intérêt que peut revêtir une intégration réussie pour l’adulte et pour la société seront examinés.The way in which the disabled were viewed underwent significant changes in the second half of the 20th century

  9. GAMBARAN JENIS DAN JUMLAH KONSUMSI FAST FOOD DAN SOFT DRINK PADA MAHASISWA OBESITAS DI UNIVERSITAS HASANUDDIN

    OpenAIRE

    Suryanti, Rut; Jafar, Nurhaedar; Syam, Aminuddin

    2013-01-01

    Konsumsi fast food dan soft drink dapat menyebabkan kelebihan berat badan dan obesitas.Penelitian ini bertujuan untuk mengetahui gambaran jenis dan jumlah zat gizi makro dari konsumsi fast food dan soft drink pada mahasiswa yang obesitas.Jenis penelitian adalah deskriptif, dilaksanakan pada bulan Mei-Juni 2013 di Universitas Hasanuddin dengan jumlah responden 60 orang. Instrument penelitian adalah kuesioner identitas diri dan food frekuensiSemiQuantitatif fast food dan soft drink, food pictur...

  10. PERSEPSI DAN TRANSFORMASI VISI DAN MISI PADA CIVITAS AKADEMIKA STAIN PEKALONGAN

    Directory of Open Access Journals (Sweden)

    Imam Khanafi

    2013-05-01

    Full Text Available Penelitian ini mengukur tingkat persepsi visi dan misi civitas akademika STAIN Pekalongan, dan mengukur juga tingkat implementasi sebagai transformasi visi misi tersebut serta menemukan hubungan antara persepsi dengan implementasinya. Kajian ini memiliki signifikan yang strategis dalam konteks manajemen dan pengembangan Pendidikan di STAIN Pekalongan dan lembaga pendidikan lainnya. Hal ini karena posisi visi dan misi sebagai kerangka acuan (frame of reference yang mengarahkan dan menjelaskan kepada keseluruh unsur civitas akademika dalam setiap program kerjanya.

  11. Primitive magmas at five Cascade volcanic fields: Melts from hot, heterogeneous sub-arc mantle

    Science.gov (United States)

    Bacon, C.R.; Bruggman, P.E.; Christiansen, R.L.; Clynne, M.A.; Donnelly-Nolan, J. M.; Hildreth, W.

    1997-01-01

    Major and trace element concentrations, including REE by isotope dilution, and Sr, Nd, Pb, and O isotope ratios have been determined for 38 mafic lavas from the Mount Adams, Crater Lake, Mount Shasta, Medicine Lake, and Lassen volcanic fields, in the Cascade arc, northwestern part of the United States. Many of the samples have a high Mg# [100Mg/(Mg + FeT) > 60] and Ni content (>140 ppm) such that we consider them to be primitive. We recognize three end-member primitive magma groups in the Cascades, characterized mainly by their trace-element and alkali-metal abundances: (1) High-alumina olivine tholeiite (HAOT) has trace element abundances similar to N-MORB, except for slightly elevated LILE, and has Eu/Eu* > 1. (2) Arc basalt and basaltic andesite have notably higher LILE contents, generally have higher SiO2 contents, are more oxidized, and have higher Cr for a given Ni abundance than HAOT. These lavas show relative depletion in HFSE, have lower HREE and higher LREE than HAOT, and have smaller Eu/Eu* (0.94-1.06). (3) Alkali basalt from the Simcoe volcanic field east of Mount Adams represents the third end-member, which contributes an intraplate geochemical signature to magma compositions. Notable geochemical features among the volcanic fields are: (1) Mount Adams rocks are richest in Fe and most incompatible elements including HFSE; (2) the most incompatible-element depleted lavas occur at Medicine Lake; (3) all centers have relatively primitive lavas with high LILE/HFSE ratios but only the Mount Adams, Lassen, and Medicine Lake volcanic fields also have relatively primitive rocks with an intraplate geochemical signature; (4) there is a tendency for increasing 87Sr/86Sr, 207Pb/204Pb, and ??18O and decreasing 206Pb/204Pb and 143Nd/144Nd from north to south. The three end-member Cascade magma types reflect contributions from three mantle components: depleted sub-arc mantle modestly enriched in LILE during ancient subduction; a modern, hydrous subduction component

  12. A compact representation of drawing movements with sequences of parabolic primitives.

    Directory of Open Access Journals (Sweden)

    Felix Polyakov

    2009-07-01

    Full Text Available Some studies suggest that complex arm movements in humans and monkeys may optimize several objective functions, while others claim that arm movements satisfy geometric constraints and are composed of elementary components. However, the ability to unify different constraints has remained an open question. The criterion for a maximally smooth (minimizing jerk motion is satisfied for parabolic trajectories having constant equi-affine speed, which thus comply with the geometric constraint known as the two-thirds power law. Here we empirically test the hypothesis that parabolic segments provide a compact representation of spontaneous drawing movements. Monkey scribblings performed during a period of practice were recorded. Practiced hand paths could be approximated well by relatively long parabolic segments. Following practice, the orientations and spatial locations of the fitted parabolic segments could be drawn from only 2-4 clusters, and there was less discrepancy between the fitted parabolic segments and the executed paths. This enabled us to show that well-practiced spontaneous scribbling movements can be represented as sequences ("words" of a small number of elementary parabolic primitives ("letters". A movement primitive can be defined as a movement entity that cannot be intentionally stopped before its completion. We found that in a well-trained monkey a movement was usually decelerated after receiving a reward, but it stopped only after the completion of a sequence composed of several parabolic segments. Piece-wise parabolic segments can be generated by applying affine geometric transformations to a single parabolic template. Thus, complex movements might be constructed by applying sequences of suitable geometric transformations to a few templates. Our findings therefore suggest that the motor system aims at achieving more parsimonious internal representations through practice, that parabolas serve as geometric primitives and that non

  13. Versatility of `hemorheologic fitness' according to exercise intensity: emphasis on the "healthy primitive lifestyle"

    Science.gov (United States)

    Brun, Jean-Frédéric; Varlet-Marie, Emmanuelle; Chevance, Guillaume; Pollatz, Marion; Fedou, Christine; de Mauverger, Eric Raynaud

    2014-05-01

    We recently proposed a unifying hypothesis to reconcile unexpected findings in exercise hemorheology and the classical concepts of "hemorheologic fitness" and the "triphasic effects of exercise", based on the "healthy primitive lifestyle" paradigm. This paradigm assumes that evolution has selected genetic polymorphisms leading to insulin resistance as an adaptative strategy to cope with continuous low intensity physical activity and a special alimentation moderately high in protein, rich in low glycemic index carbohydrates, and poor in saturated fat. According to this protocol the true physiological picture would be that of an individual whose exercise and nutritional habits are close from this lifestyle, both sedentary subjects and trained athletes representing situations on the edge of this model. Unfortunately samples of people truly adhering to this ancestral lifestyle are hard to obtain. In order to address this picture we tried to compare databases obtained with our preceding published studies. As a model of the "healthy primitive lifestyle" we selected patients trained at low intensity (LI) and given an advice of protein intake around 1.2 g/kg/day. Results show a continuum for plasma viscosity which seems to be lower in athletes than LI-trained and even more sedentaries. When sedentary subjects become obese the most obvious characteristic is an increase in red blood cell (RBC) aggregation correlated to the size of fat stores. It is clear that 3 months of LI are not a perfect model of "healthy primitive lifestyle", but these data suggest that the most important effect of LI regular exercise is to decrease plasma viscosity and that sedentarity increases RBC aggregation mostly when it results in increased fat storage.

  14. A musculoskeletal model of human locomotion driven by a low dimensional set of impulsive excitation primitives.

    Science.gov (United States)

    Sartori, Massimo; Gizzi, Leonardo; Lloyd, David G; Farina, Dario

    2013-01-01

    Human locomotion has been described as being generated by an impulsive (burst-like) excitation of groups of musculotendon units, with timing dependent on the biomechanical goal of the task. Despite this view being supported by many experimental observations on specific locomotion tasks, it is still unknown if the same impulsive controller (i.e., a low-dimensional set of time-delayed excitastion primitives) can be used as input drive for large musculoskeletal models across different human locomotion tasks. For this purpose, we extracted, with non-negative matrix factorization, five non-negative factors from a large sample of muscle electromyograms in two healthy subjects during four motor tasks. These included walking, running, sidestepping, and crossover cutting maneuvers. The extracted non-negative factors were then averaged and parameterized to obtain task-generic Gaussian-shaped impulsive excitation curves or primitives. These were used to drive a subject-specific musculoskeletal model of the human lower extremity. Results showed that the same set of five impulsive excitation primitives could be used to predict the dynamics of 34 musculotendon units and the resulting hip, knee and ankle joint moments (i.e., NRMSE = 0.18 ± 0.08, and R (2) = 0.73 ± 0.22 across all tasks and subjects) without substantial loss of accuracy with respect to using experimental electromyograms (i.e., NRMSE = 0.16 ± 0.07, and R (2) = 0.78 ± 0.18 across all tasks and subjects). Results support the hypothesis that biomechanically different motor tasks might share similar neuromuscular control strategies. This might have implications in neurorehabilitation technologies such as human-machine interfaces for the torque-driven, proportional control of powered prostheses and orthoses. In this, device control commands (i.e., predicted joint torque) could be derived without direct experimental data but relying on simple parameterized Gaussian-shaped curves, thus decreasing the input drive

  15. Regeneració i homeòstasi a les planàries: gens i vies de senyalització implicats en l'organogènesi

    OpenAIRE

    González Sastre, Alejandro

    2017-01-01

    [cat] En aquesta tesi, titulada “Regeneració i homeòstasi a les planàries: gens i vies de senyalització implicats en l'organogènesi”, s’aprofundeix en l’estudi dels processos responsables de l’organogènesi a la planària d’aigua dolça Schmidtea mediterranea, tant durant la regeneració com durant l’homeòstasi. La planària d’aigua dolça Schmidtea mediterranea presenta una extraordinària capacitat de regeneració, gràcies a la presència d’una elevada quantitat de cèl·lules mare, els neoblasts, qu...

  16. Réponse à Mme DESAFY-GRIGNARD au sujet de son ouvrage Arthur Miller : une vie à l’œuvre

    Directory of Open Access Journals (Sweden)

    Trudy Bolter

    2006-11-01

    Full Text Available RÉPONSE à Mme DESAFY-GRIGNARD 
au sujet de son ouvrage Arthur Miller : une vie à l’oeuvre


 Un compte rendu n’est pas forcément un résumé neutre : rien ne m’oblige à répéter en l’étoffant la quatrième page de couverture de l'ouvrage. « Lu par ... » dit bien qu'il s'agit d'une vision personnelle. J’avoue que j’ai lu ce livre avec surprise, une émotion très vive, pas toujours très positive. Je conteste certaines approches, qui m’apparaissent approximatives, pas assez complètes , quelques tourn...

  17. Perancangan dan Analisis Redistribution Routing Protocol OSPF dan EIGRP

    Directory of Open Access Journals (Sweden)

    DWI ARYANTA

    2016-02-01

    Full Text Available Abstrak OSPF (Open Shortest Path First dan EIGRP (Enhanced Interior Gateway Routing Protocol adalah dua routing protokol yang banyak digunakan dalam jaringan komputer. Perbedaan karakteristik antar routing protokol menimbulkan masalah dalam pengiriman paket data. Teknik redistribution adalah solusi untuk melakukan komunikasi antar routing protokol. Dengan menggunakan software Cisco Packet Tracer 5.3 pada penelitian ini dibuat simulasi OSPF dan EIGRP yang dihubungkan oleh teknik redistribution, kemudian dibandingkan kualitasnya dengan single routing protokol EIGRP dan OSPF. Parameter pengujian dalam penelitian ini adalah nilai time delay dan trace route. Nilai trace route berdasarkan perhitungan langsung cost dan metric dibandingkan dengan hasil simulasi. Hasilnya dapat dilakukan proses redistribution OSPF dan EIGRP. Nilai delay redistribution lebih baik 1% dibanding OSPF dan 2-3% di bawah EIGRP tergantung kepadatan traffic. Dalam perhitungan trace route redistribution dilakukan 2 perhitungan, yaitu cost untuk area OSPF dan metric pada area EIGRP. Pengambilan jalur utama dan alternatif pengiriman paket berdasarkan nilai cost dan metric yang terkecil, hal ini terbukti berdasarkan perhitungan dan simulasi. Kata kunci: OSPF, EIGRP, Redistribution, Delay, Cost, Metric. Abstract OSPF (Open Shortest Path First and EIGRP (Enhanced Interior Gateway Routing Protocol are two routing protocols are widely used in computer networks. Differences between the characteristics of routing protocols pose a problem in the delivery of data packets. Redistribution technique is the solution for communication between routing protocols. By using the software Cisco Packet Tracer 5.3 in this study were made simulating OSPF and EIGRP redistribution linked by technique, then compared its quality with a single EIGRP and OSPF routing protocols. Testing parameters in this study is the value of the time delay and trace route. Value trace route based on direct calculation of cost

  18. Primitive neuroectodermal tumor presenting as a presacral mass: A rare case report with review of literature

    Directory of Open Access Journals (Sweden)

    Pradnya S Bhadarge

    2017-01-01

    Full Text Available Primitive neuroectodermal tumors (PNETs are a group of highly malignant small round cell tumor (SRCT of neuroectodermal origin. They exhibit a great diversity in their clinical manifestations and pathologic similarities with other SRCTs. PNET commonly occurs in the central nervous system, head and neck region, paravertebral region, pelvis, and lower extremities. PNET presenting as a presacral mass is very rare. We present a case of 65-year-old female patient presented with a mass in the abdomen. Exploratory laparotomy with excision of mass was carried out. Histopathology revealed the diagnosis of PNET. The rarity of PNET at presacral region prompted the description of this case.

  19. Heavy Metal Bioaccumulation in an Atypical Primitive Neuroectodermal Tumor of the Abdominal Wall.

    Science.gov (United States)

    Roncati, Luca; Gatti, Antonietta Morena; Capitani, Federico; Barbolini, Giuseppe; Maiorana, Antonio; Palmieri, Beniamino

    2015-01-01

    Heavy metals are able to interfere with the function of vital cellular components. Besides in trace heavy metals, which are essential at low concentration for humans, there are heavy metals with a well-known toxic and oncogenic potential. In this study, for the first time in literature, we report the unique adulthood case of an atypical primitive neuroectodermal tumor of the abdominal wall, diagnosed by histology and immunohistochemistry, with the molecular hybridization support. The neoplasia occurred in a patient chronically exposed to a transdermal delivery of heavy metal salts (aluminum and bismuth), whose intracellular bioaccumulation has been revealed by elemental microanalysis.

  20. An Efficient Primitive-Based Method to Recognize Online Sketched Symbols with Autocompletion

    Directory of Open Access Journals (Sweden)

    Wei Deng

    2015-01-01

    Full Text Available We present a new structural method of sketched symbol recognition, which aims to recognize a hand-drawn symbol before it is fully completed. It is invariant to scale, stroke number, and order. We also present two novel descriptors to represent the spatial distribution between two primitives. One is invariant to rotation and the other is not. Then a symbol is represented as a set of descriptors. The distance between the input symbol and the template one is calculated based on the assignment problem. Moreover, a fast nearest neighbor (NN search algorithm is proposed for recognition. The method achieves a satisfactory recognition rate in real time.

  1. Primitive neuroectodermal tumor or small cell carcinoma of the kidney, arare neoplasm: Case Report

    International Nuclear Information System (INIS)

    Radhi, A.; Ratnakar, K.S.; Al-Durazi, M.; Khalifa, F.

    2002-01-01

    Small cell carcinoma is a malignancy primarily recognized in thebronchopulmonary region. Extrapulmonary locations are extremely uncommon. Wereport here a case of renal tumor encountered in a 34-year-old female, withextensive metastases in liver, lung and bone. Histological examination wasmost compatible with primitive neuroectodermal tumor (PNET) small cellcarcinoma. There were negative immunohistochemical markers for cytokeratin,any hormonal peptides and epithelial membrane antigens, which is consistentwith the designation of neoplasm as PNET. Previously reported cases have allbeen in the elderly and, to the best of our knowledge, this is the first caseof proven PNET of the kidney described in a young female. (author)

  2. Molecular analysis of childhood primitive neuroectodermal tumors defines markers associated with poor outcome

    DEFF Research Database (Denmark)

    Scheurlen, W G; Schwabe, G C; Joos, S

    1998-01-01

    PURPOSE: The diagnostic and prognostic significance of well-defined molecular markers was investigated in childhood primitive neuroectodermal tumors (PNET). MATERIALS AND METHODS: Using microsatellite analysis, Southern blot analysis, and fluorescence in situ hybridization (FISH), 30 primary tumors......: In our study, amplification of c-myc was a poor-prognosis marker in PNET. LOH of chromosome 17p was associated with metastatic disease. Molecular analysis of primary tumors using these markers may be useful for stratification of children with PNET in future prospective studies. The other aberrations...... investigated were not of significant prognostic value, but may provide an entry point for future large-scale molecular studies....

  3. Interaction learning for dynamic movement primitives used in cooperative robotic tasks

    DEFF Research Database (Denmark)

    Kulvicius, Tomas; Biehl, Martin; Aein, Mohamad Javad

    2013-01-01

    Abstract Since several years dynamic movement primitives (DMPs) are more and more getting into the center of interest for flexible movement control in robotics. In this study we introduce sensory feedback together with a predictive learning mechanism which allows tightly coupled dual-agent systems...... to learn an adaptive, sensor-driven interaction based on DMPs. The coupled conventional (no-sensors, no learning) DMP-system automatically equilibrates and can still be solved analytically allowing us to derive conditions for stability. When adding adaptive sensor control we can show that both agents learn...

  4. Amino acid codes in mitochondria as possible clues to primitive codes

    Science.gov (United States)

    Jukes, T. H.

    1981-01-01

    Differences between mitochondrial codes and the universal code indicate that an evolutionary simplification has taken place, rather than a return to a more primitive code. However, these differences make it evident that the universal code is not the only code possible, and therefore earlier codes may have differed markedly from the previous code. The present universal code is probably a 'frozen accident.' The change in CUN codons from leucine to threonine (Neurospora vs. yeast mitochondria) indicates that neutral or near-neutral changes occurred in the corresponding proteins when this code change took place, caused presumably by a mutation in a tRNA gene.

  5. Primary Vaginal Extraosseous Ewing Sarcoma/Primitive Neuroectodermal Tumor with Cranial Metastasis

    Directory of Open Access Journals (Sweden)

    Chi-Man Yip

    2009-06-01

    Full Text Available Extraosseous Ewing sarcoma is now regarded as a member of the Ewing sarcoma/primitive neuroectodermal tumor (PNET family. It typically involves the soft tissues of the chest wall, pelvis, paravertebral region, abdominal wall, retroperitoneal region and extremities of children, adolescents and young adults, but it seldom occurs in the female genital tract. We report an extremely rare case of retrospective diagnosis of vaginal extraosseous Ewing sarcoma/PNET which metastasized to the right frontoparietal scalp, skull, and dura. Surgical resection, followed by adjuvant radiotherapy and chemotherapy resulted in a favourable clinical outcome. Both the vaginal and head tumors had similar light microscopic features supporting the diagnosis.

  6. Congenital Ewing's Sarcoma/Peripheral Primitive Neuroectodermal Tumor: A Case Report and Review of the Literature.

    Science.gov (United States)

    Jin, Shu-Guang; Jiang, Xiao-Ping; Zhong, Lin

    2016-10-01

    Ewing's sarcoma (EWS) and peripheral primitive neuroectodermal tumor (pPNET) are small round cell malignancies that develop in soft tissue and bone. They very rarely affect newborns. A diagnosis of EWS/pPNET depends mainly on immunohistochemistry and molecular/genetic assays. Since these tumors are highly aggressive, patient prognosis is typically very poor, and treatment remains a challenge. Here, we report a 13-day-old newborn diagnosed with congenital EWS/pPNET and describe its treatment. Copyright © 2014. Published by Elsevier B.V.

  7. Congenital Ewing's Sarcoma/Peripheral Primitive Neuroectodermal Tumor: A Case Report and Review of the Literature

    Directory of Open Access Journals (Sweden)

    Shu-Guang Jin

    2016-10-01

    Full Text Available Ewing's sarcoma (EWS and peripheral primitive neuroectodermal tumor (pPNET are small round cell malignancies that develop in soft tissue and bone. They very rarely affect newborns. A diagnosis of EWS/pPNET depends mainly on immunohistochemistry and molecular/genetic assays. Since these tumors are highly aggressive, patient prognosis is typically very poor, and treatment remains a challenge. Here, we report a 13-day-old newborn diagnosed with congenital EWS/pPNET and describe its treatment.

  8. Safety evaluation of an açai-fortified fruit and berry functional juice beverage (MonaVie Active(®)).

    Science.gov (United States)

    Schauss, Alexander G; Clewell, Amy; Balogh, Lajos; Szakonyi, Ilona Pasics; Financsek, Istvan; Horváth, János; Thuroczy, Julianna; Béres, Erzsébet; Vértesi, Adél; Hirka, Gabor

    2010-11-28

    The safety of an açai (Euterpe oleracea Mart.) pulp enriched fruit and berry juice, MonaVie Active®, fortified with the functional ingredient, glucosamine, was studied. The beverage was found not to be mutagenic, clastogenic, cytotoxic, or genotoxic, as determined by the bacterial reverse mutation assay, chromosomal aberration assay, mouse micronucleus assay, and mammalian cell gene mutation (L5178Y) assay. The single dose LD50 based on a 14-day acute oral toxicity study is greater than 20,000 mg/kg bw, the highest dose tested. In a repeat dose 90-day oral subchronic toxicity study by gavage, 220 animals were randomly assigned to a control group, an untreated group, or one of three experimental groups (10, 20 and 40 g/kg bw). No treatment-related significant changes in body weight, food and water consumption, ophthalmology, organ weights, urinanalysis, hematological and clinical chemistry, or gross pathology, were observed in surviving animals compared to the control groups. Three animals died midway through the observation period (male, 20 g/kg bw/day; male 40 g/kg bw/day; and, female, 10 g/kg bw/day). These animals died without preceding clinical symptoms, histopathological lesions, or evidence of injury to tissue or organs except for signs of suffocation/aspiration congestion, which was concluded to be due to problems with the gavage administration of the fluid test article, and not due to the test article itself. The NOEAL was determined to be 40 g/kg bw/day for male and female rats, which was the highest dose tested. Phylloquinone (vitamin K1) content averaged 21.7 μg/100 g, comparable to amounts found in iceberg lettuce. In conclusion, the results provide additional experimental evidence that MonaVie Active® juice is non-toxic. Copyright © 2010 Elsevier Ireland Ltd. All rights reserved.

  9. Cycle annuel d'activité de la truite commune (Salmo trutta L. adulte : Étude par radio-pistage dans un cours d'eau de l'Ardenne belge

    Directory of Open Access Journals (Sweden)

    OVIDIO M.

    1999-01-01

    Full Text Available Sur une durée totale d'expérience de vingt-six mois, vingt truites (26,0-57,0 cm LF ; 198-1 685 g ont été quotidiennement suivies par radio-pistage dans l'Aisne (affluent de l'Ourthe durant des périodes variant de 466 à 16 jours selon les individus et les contraintes techniques expérimentales, notamment la durée de vie des batteries. Il apparaît que l'amplitude et la fréquence des mouvements sont le plus élevées d'octobre à décembre, pendant la période de reproduction. Les migrations vers l'amont (max. : 25 km ont principalement lieu en octobre et pendant la première quinzaine de novembre et sont déclenchées par des variations combinées du niveau d'eau et de la température, dans une gamme thermique précise (10°C à 14°C. Le frai (de la deuxième quinzaine de novembre à la fin décembre a lieu dans le cours principal (largeur maximale : 10 m ou dans de petits affluents. Les truites qui survivent effectuent un homing post-reproducteur rapide (max. : 9 200 m en 24 h et précis. En dehors du contexte de la reproduction, les déplacements sont moins longs et correspondent essentiellement à des changements alternés de gîtes dans un domaine vital bien défini dont la longueur est corrélée avec la taille des truites. En mars et juin, certaines truites effectuent des migrations unidirectionnelles de grande amplitude vers l'amont dont la signification biologique est inconnue. Les résultats sont discutés dans le contexte des stratégies de vie de la truite et de la gestion des populations.

  10. Pengaruh Perebusan, Penggaraman Dan Penjemuran Pada Udang Dan Cumi Terhadap Pembentukan 7 Ketokolesterol

    Directory of Open Access Journals (Sweden)

    Rudi Riyanto

    2007-12-01

    Full Text Available Penelitian pengaruh perebusan, penggaraman dan penjemuran pada udang dan cumi terhadap pembentukan 7‑ketokolesterol telah dilakukan. Dalam penelitian ini, udang dan cumi masing ­masing dibagi dalam dua kelompok. Pada kelompok pertama diberikan perlakuan perebusan dalam air, dan pada kelompok kedua diberikan perlakuan perebusan dalam air garam (3% air garam untuk udang dan 20% air garam untuk cumi. Setelah perebusan, dilakukan pengeringan di bawah matahari (udang dikupas dahulu sebelum dijemur. Pengambilan sampel dilakukan saat kondisi segar, setelah direbus dan setelah dijemur. Pengamatan dilakukan terhadap kandungan 7‑ketokolesterol, kolesterol, nilai TBA, dan kadar air. Hasil penelitian menunjukkan bahwa perebusan, penggaraman dan penjemuran berpengaruh terhadap pembentukan 7‑ketokolesterol sampai konsentrasi 20,82 ppm pada udang dan 15,05 ppm pada cumi sebagai konsentrasi tertinggi produk hasil oksidasi kolesterol yang terbentuk. Penelitian ini dapat dijadikan bukti bahwa pemanasan (perebusan dan penjemuran, serta penggaraman berpengaruh dalam proses oksidasi kolesterol pada udang dan cumi.

  11. CORPORATE IDENTITY SEJARAH DAN APLIKASINYA

    Directory of Open Access Journals (Sweden)

    Christine Suharto Cenadi

    1999-01-01

    Full Text Available In the recent globalization era%2C and the developed market%2C many companies compete to attract consumers to buy their products. One of the keys to compete and survive in this developing market is by creating an image and graphic identity. This paper will discuss about corporate identity%2C image%2C its purpose and applications. Abstract in Bahasa Indonesia : Dalam era globalisasi dewasa ini%2C dan dengan berkembangnya pasar (market%2C banyak perusahaan bersaing untuk menarik perhatian konsumen untuk membeli produknya. Salah satu cara untuk bersaing dan dapat bertahan di dalam pasar yang terus berkembang ini adalah dengan menciptakan suatu image dan identitas graphic. Tulisan ini akan membahas tentang corporate identity%2C image%2C fungsi dan aplikasinya

  12. Profil Sensori dan Nilai Gizi Beberapa Jenis Ikan Patin dan Hibrid Nasutus

    Directory of Open Access Journals (Sweden)

    Theresia Dwi Suryaningrum

    2010-11-01

    Full Text Available Penelitian mengenai profil sensori dan nilai gizi filet patin Siam (Pangasius hypopthalmus, Jambal (Pangasius djambal Bleeker, Pasupati, Nasutus serta hasil silangan Siam dan Nasutus (hibrid Nasutus telah dilakukan. Analisis sensori dilakukan dengan uji pembeda menyeluruh, uji pembeda atribut, uji kesukaan, dan uji rangking. Pengamatan lainnya dilakukan terhadap edible portion dan nilai gizi (proksimat dan profil asam amino. Hasil penelitian menunjukkan bahwa filet patin hibrid Nasutus lebih memiliki kesamaan warna dengan filet patin Nasutus daripada filet patin Siam. W arna daging filet patin hibrid Nasutus berbeda nyata dengan induknya yaitu patin Nasutus dan patin Siam. Panelis lebih menyukai warna filet patin hibrid Nasutus dibandingkan dengan patin Pasupati. Patin hibrid Nasutus mempunyai tekstur yang berbeda nyata dengan Nasutus dan Jambal yang kompak dan padat, tetapi mempunyai kesamaan dengan patin Siam dan Pasupati yang agak kompak dan agak padat. Berdasarkan intensitas warna, hasil uji pembeda atribut dan uji kesukaan, maka secara berturut-turut panelis menyukai filet patin Jambal, Nasutus, hibrid Nasutus, Pasupati, dan Siam. Hibrid Nasutus mempunyai edible portionpaling tinggi (49% dibandingkan dengan patin lainnya tetapi mempunyai kadar air, kadar lemak, dan kadar protein yang lebih rendah dan berbeda nyata dengan induknya (patin Siam dan Nasutus. Patin Siam mengandung asam amino esensial paling tinggi di antara berbagai jenis patin yang diteliti. Profil asam amino patin hibrid Nasutus, Jambal, Pasupati, dan Nasutus hampir sama, kecuali pada patin Siam yang mengandung glisin, leusin, isoleusin, histidin, serin, treonin, dan prolin yang lebih tinggi dibandingkan dengan patin lainnya

  13. MENGENALI GEJALA TINITUS DAN PENATALAKSANAANNYA

    Directory of Open Access Journals (Sweden)

    Dewi Purwita Agustini

    2016-05-01

    Full Text Available Telinga berdenging atau dikenal dalam bahasa medis sebagai tinitus, banyak dikeluhkan sebagai suatu bising atau bunyi yang muncul di kepala tanpa adanya rangsangan dari luar. Adapun keluhan yang dialami ini seperti bunyi mendengung, mendesis, menderu, atau berbagai variasi bunyi yang lain. Tinitus bukanlah penyakit atau sindroma, tapi hanya merupakan gejala yang mungkin berasal dari satu atau sejumlah kelainan. Sebetulnya suara yang terdengar oleh telinga tersebut belum tentu bersifat kelainan atau patologis. Jika orang sehat yang terbukti telinganya normal, berada dalam ruang kedap (anehoic chamber, maka ia akan dapat mendengar berbagai macam suara yang berasal dari berbagai organ tubuhnya sendiri yang memang bekerja setiap saat, contohnya: pernapasan, kontraksi jantung, dan aliran darah. Kenyataannya, dalam kehidupan sehari-hari, suasana yang memungkinkan suara fisiologis atau normal tersebut terdengar oleh seseorang sangat jarang tercipta dan bahkan dalam kamar yang sunyi di malam hari sekalipun. Hal ini dikarenakan, bunyi masking dari lingkungan dengan berintensitas bunyi sekitar 25 – 30 dB. Tinitus baru menjadi gejala jika suara organ tubuh intensitasnya melebihi bunyi masking lingkungan tadi. Tinitus kerap diderita terutama orang pada kelompok usia pertengahan dan usia tua. Menurut data statistic dari pusat kesehatan di Amerika, sekitar 32% orang dewasa pernah mengalami tinitus pada suatu saat tertentu dalam hidupnya, dan 6 % nya sangat menganggu dan cukup sulit disembuhkan. Di Inggris, 17% populasi juga memiliki masalah tinitus. Sayangnya di Indonesia belum ada data statistic yang memadai, namun berdasarkan pengalaman empiris, penderita tinitus cukup banyak dan sering ditemui di tempat praktek, klinik, maupun rumah sakit. Meski tinitus bukanlah keadaan yang membahayakan, munculnya gejala ini pada hampir kebanyakan orang sangat mengganggu dan sering mempengaruhi kualitas hidup dan pekerjaannya. Kata Kunci: Tinitus, berdenging, telinga

  14. Le CRDI dans les Philippines

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le CRDI appuie la recherche dans les. Philippines depuis 1972. Le travail qu'y ont accompli des universités et des instituts de recherche vigoureux et la participation active de la société civile ont entraîné d'importantes améliorations dans les domaines de l'agriculture, du suivi de la pauvreté et de la gestion des forêts.

  15. XML specifications DanRIS

    DEFF Research Database (Denmark)

    2009-01-01

    XML specifications for DanRIS (Danish Registration- og InformationsSystem), where the the aim is: Improved exchange of data Improved data processing Ensuring future access to all gathered data from the year 1999 until now......XML specifications for DanRIS (Danish Registration- og InformationsSystem), where the the aim is: Improved exchange of data Improved data processing Ensuring future access to all gathered data from the year 1999 until now...

  16. Ketergantungan Online Game Dan Penanganannya

    OpenAIRE

    Syahran, Ridwan

    2015-01-01

    Penelitian ini dimaksudkan untuk mengetahui perilaku yang ditimbulkan dari kecanduan bermaian online game pada siswa SMP Negeri 1 Palu yang meliputi faktor-faktor penyebab kecanduan, keadaan psikologis yang ditimbulkan dari kecanduan bermain online game dan dampak-dampak yang ditimbulkan dari kecanduan bermain online game.Pendekatan penelitian ini adalah penelitian kualitatif dengan jenis penelitian studi kasus dengan berdasarkan responden dan informan sebagai bahan sumber data. Dalam proses ...

  17. Les touristes dans le système touristique polynésien: essai de typologie

    Directory of Open Access Journals (Sweden)

    Caroline Blondy

    2012-03-01

    Full Text Available Les touristes sont couramment considérés, dans la plupart des analyses, comme une catégorie homogène et distincte de la catégorie «société locale». L’un des enjeux de la thèse a été de déconstruire cette idée. Partant d’une définition du tourisme comme «système d’acteurs, de pratiques et de lieux qui a pour objectif de permettre aux individus de se déplacer pour leur recréation hors de leur lieu de vie habituel, en allant habiter temporairement d’autres lieux.» (Dehoorne et al., 2003, l’analyse de la catégorie des touristes amène à s’interroger sur leurs pratiques et leur rapport à l’altérité.

  18. ENERGI DAN DAMPAKNYA TERHADAP LINGKUNGAN

    Directory of Open Access Journals (Sweden)

    I Made Astra

    2010-11-01

    Full Text Available Energi dapat berubah dari satu bentuk ke bentuk yang  lainnya, perubahannya sering mempengaruhi lingkungan dan udara yang kita hirup dengan berbagai cara. Energy kimia dalam bahan bakar fosil diubah menjadi energy panas, mekanik, atau listrik melalui pembakaran dan  ini sebagai penghasil polutan terbesar. Dan dengan demikian pembangkit listrik, kendaraan bermotor, dan kompor adalah penyebab utama terjadinya polusi udara.  Polutan yang dikeluarkan biasanya dikelompokan menjadi  hidrokarbon (HC, nitrogen oksida (NOx, dan  karbon monoksida (CO. Polutan yang dihasilkan pada pembakaran fosil merupakan faktor terbesar terjadinya asap, hujan asam,  pemanasan global dan perubahan iklim.   The conversion of energy from one form to another often affects the environment and the air we breath in many ways. Pollutants are emitted as the chemical energy in fossil fuels is converten to thermal, mechanical, or electrical energy via combustion, and thus power plants, motor vehicles, and even stoves take the blame for air pollution, and  the pollutants released by the vehicles are usually grouped as hydrocarbons (HC, nitrogen oxides (NOx, and carbon monoxide (CO. Pollutans emitted during the combustion of fossil fuels are responsible for smog, acid rain, and global warming and climate change.

  19. Isolasi dan Karakterisasi Ralstonia syzygii

    Directory of Open Access Journals (Sweden)

    Yanuar Danaatmadja

    2009-07-01

    Full Text Available Ralstonia syzygii is one of important pathogens of cloves. This study was aimed at obtaining pure culture of R. syzygi from diseased plant tissue samples. The acterium was isolated from infected clove plantations in Ungaran, Central Java. It had the ability to make clove seedlings show symptoms and then die 41 days after inoculation. The reisolated bacterium also showed its ability to kill clove seedlings after 17 days. The bacterium is gram negative, able to ultilize glucose, sucrose, maltose, mannitol, sorbitol, dulcitol, and glycerol, able to hydrolyze starch, grow well at 27oC, able to catalyze and release water and oxygen from hydrogen peroxyde (H2O2 and aerobically.   Ralstonia syzygii merupakan salah satu patogen penting pada tanaman cengkeh. Penelitian ini dilakukan untuk mendapakan isolat murni R syzygii dari jaringan tanaman terinfeksi. Bakteri diisolasi dari pertanaman cengkeh sakit yang berasal dari daerah Ungaran, Jawa Tengah. Bakteri menunjukkan kemampuan untuk menyebabkan bibit tanaman cangkeh sakit dan kemudian mati 41 hsi. Bakteri hasil reisolasi juga menunjukkan kemampuannya menyebabkan sakit dan kematian pada bibit tanaman cengkeh setelah 17 hsi. Bakteri yang diperoleh bersifat gram negatif, mampu memanfaatkan glukosa, sukrosa, maltosa, manitol, sorbitol, dulsitol, dan gliserol, mampu menghidrolisis pati, tumbuh baik pada suhu 27o C, mampu mengkatalisis dan melepaskan air dan oksigen dari hydrogen peroxide (H2O2 dan bersifat aerob.

  20. Navigation Strategies for Primitive Solar System Body Rendezvous and Proximity Operations

    Science.gov (United States)

    Getzandanner, Kenneth M.

    2011-01-01

    A wealth of scientific knowledge regarding the composition and evolution of the solar system can be gained through reconnaissance missions to primitive solar system bodies. This paper presents analysis of a baseline navigation strategy designed to address the unique challenges of primitive body navigation. Linear covariance and Monte Carlo error analysis was performed on a baseline navigation strategy using simulated data from a· design reference mission (DRM). The objective of the DRM is to approach, rendezvous, and maintain a stable orbit about the near-Earth asteroid 4660 Nereus. The outlined navigation strategy and resulting analyses, however, are not necessarily limited to this specific target asteroid as they may he applicable to a diverse range of mission scenarios. The baseline navigation strategy included simulated data from Deep Space Network (DSN) radiometric tracking and optical image processing (OpNav). Results from the linear covariance and Monte Carlo analyses suggest the DRM navigation strategy is sufficient to approach and perform proximity operations in the vicinity of the target asteroid with meter-level accuracy.

  1. Boltzmann's dynamic on the primitive earth about 3.9 billion years ago

    International Nuclear Information System (INIS)

    Matsuno, Koichiro

    1995-01-01

    An evolutionary significant event that could have happened on the primitive earth would be a process of enhancing energy concentrations locally. Once the concentrated energy be released, it could drive various molecular association and dissociation. We have examined, both theoretically and experimentally, a possibility of forming such microscopic heat engines feeding upon the then available thermal environment. Theoretically, Boltzmann's dynamics of molecules that would lose their memory of pas collisions with others is found to uphold those molecules that could feed upon thermal energy if the thermal environment would fluctuate through, for instance, a diurnal cycle. Experimentally, thermal heterocomplex molecules from amino acids, that could have been ubiquitous on the primitive earth, are shown to carry with themselves a wide variety of quasi-stable states such that they could remain in excited states for a considerable period of time even if the temperature of the thermal environment is lowered. The stored energy in these excited states, once released, can be utilized as a factor for driving various molecular association and dissociation. (author). Abstract only

  2. Retained primitive reflexes: Perceptions of parents who have used Rhythmic Movement Training with their children.

    Science.gov (United States)

    Grigg, Tessa M; Fox-Turnbull, Wendy; Culpan, Ian

    2018-01-01

    This article reports on a qualitative phenomenological research project that investigated the use of Rhythmic Movement Training (RMT) as an intervention for retained primitive reflexes. Participants were from seven families who each had a child between the ages of 7 years and 12 years. Through semi-structured interviews, parents described their reasons for seeking additional help with their child's development issues. They talked about finding RMT, using RMT within their family routine and their views on the costs and the benefits they experienced, both financial and time. While there has been a small amount of research into movement programmes targeting retained primitive reflexes, to date there appears to have been no studies completed on RMT. The data collected described searches for help, the stress and frustrations associated with the search and the range of interventions these parents tried. The families in this research found that RMT was easy to use within their daily routine and that it was a cost-effective, low-impact intervention. The families noticed a range of benefits for children who had completed the movements. The findings provide encouraging evidence to proceed with further study that will investigate the academic, social and emotional development of children using RMT.

  3. CD71(high) population represents primitive erythroblasts derived from mouse embryonic stem cells.

    Science.gov (United States)

    Chao, Ruihua; Gong, Xueping; Wang, Libo; Wang, Pengxiang; Wang, Yuan

    2015-01-01

    The CD71/Ter119 combination has been widely used to reflect dynamic maturation of erythrocytes in vivo. However, because CD71 is expressed on all proliferating cells, it is unclear whether it can be utilized as an erythrocyte-specific marker during differentiation of embryonic stem cells (ESCs). In this study, we revealed that a population expressing high level of CD71 (CD71(high)) during mouse ESC differentiation represented an in vitro counterpart of yolk sac-derived primitive erythroblasts (EryPs) isolated at 8.5days post coitum. In addition, these CD71(high) cells went through "maturational globin switching" and enucleated during terminal differentiation in vitro that were similar to the yolk sac-derived EryPs in vivo. We further demonstrated that the formation of CD71(high) population was regulated differentially by key factors including Scl, HoxB4, Eaf1, and Klf1. Taken together, our study provides a technical advance that allows efficient segregation of EryPs from differentiated ESCs in vitro for further understanding molecular regulation during primitive erythropoiesis. Copyright © 2014. Published by Elsevier B.V.

  4. QCAPUF: QCA-based physically unclonable function as a hardware security primitive

    Science.gov (United States)

    Abutaleb, M. M.

    2018-04-01

    Physically unclonable functions (PUFs) are increasingly used as innovative security primitives to provide the hardware authentication and identification as well as the secret key generation based on unique and random variations in identically fabricated devices. Security and low power have appeared to become two crucial necessities to modern designs. As an emerging nanoelectronic technology, a quantum-dot cellular automata (QCA) can achieve ultra-low power consumption as well as an extremely small area for implementing digital designs. However, there are various classes of permanent defects that can happen during the manufacture of QCA devices. The recent extensive research has been focused on how to eliminate errors in QCA structures resulting from fabrication variances. By a completely different vision, to turn this disadvantage into an advantage, this paper presents a novel QCA-based PUF (QCAPUF) architecture to exploit the unique physical characteristics of fabricated QCA cells in order to produce different hardware fingerprint instances. This architecture is composed of proposed logic and interconnect blocks that have critical vulnerabilities and perform unexpected logical operations. The behaviour of QCAPUF is thoroughly analysed through physical relations and simulations. Results confirm that the proposed QCAPUF has state of the art PUF characteristics in the QCA technology. This paper will serve as a basis for further research into QCA-based hardware security primitives and applications.

  5. Neuropilin-2 genomic elements drive cre recombinase expression in primitive blood, vascular and neuronal lineages.

    Science.gov (United States)

    Wiszniak, Sophie; Scherer, Michaela; Ramshaw, Hayley; Schwarz, Quenten

    2015-11-01

    We have established a novel Cre mouse line, using genomic elements encompassing the Nrp2 locus, present within a bacterial artificial chromosome clone. By crossing this Cre driver line to R26R LacZ reporter mice, we have documented the temporal expression and lineage traced tissues in which Cre is expressed. Nrp2-Cre drives expression in primitive blood cells arising from the yolk sac, venous and lymphatic endothelial cells, peripheral sensory ganglia, and the lung bud. This mouse line will provide a new tool to researchers wishing to study the development of various tissues and organs in which this Cre driver is expressed, as well as allow tissue-specific knockout of genes of interest to study protein function. This work also presents the first evidence for expression of Nrp2 protein in a mesodermal progenitor with restricted hematopoietic potential, which will significantly advance the study of primitive erythropoiesis. genesis 53:709-717, 2015. © 2015 Wiley Periodicals, Inc. © 2015 Wiley Periodicals, Inc.

  6. Dispossessing Urbanization: Urban Marxism in the Face of the Problem of Primitive Accumulation

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    Piotr Juskowiak

    2015-04-01

    Full Text Available The article is a complex attempt to present the achievements of the broadly understood urban Marxism in the field of reinterpretation of the classic concept from the cards of Capital – “primitive accumulation”. Drawing on theories of such scholars as David Harvey (“accumulation by dispossession” or Saskia Sassen (“expulsions”, the author points to the possible ways to operationalize the concept of “dispossessing urbanization”. Inspired by the theorizations of autonomist Marxists (Antonio Negri, Sandro Mezzadra, Massimo De Angelis, he proposes to see it as a relatively new and increasingly important dispostif that allows not only to improve traditional methods of enclosures and construct entirely new ones, but also to instrumentalize urban cultures which seems unlikely for the historical versions of primitive accumulation. This theoretical inspiration leads him also to highlight another gap in the accumulation by dispossession theory, namely the lack of sufficient reflection on the production of subjectivity processes which seem constitutive for the broad set of dispossessing practices.

  7. Fanconi anemia genes are highly expressed in primitive CD34+ hematopoietic cells

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    Brodeur Isabelle

    2003-06-01

    Full Text Available Abstract Background Fanconi anemia (FA is a complex recessive genetic disease characterized by progressive bone marrow failure (BM and a predisposition to cancer. We have previously shown using the Fancc mouse model that the progressive BM failure results from a hematopoietic stem cell defect suggesting that function of the FA genes may reside in primitive hematopoietic stem cells. Methods Since genes involved in stem cell differentiation and/or maintenance are usually regulated at the transcription level, we used a semiquantitative RT-PCR method to evaluate FA gene transcript levels in purified hematopoietic stem cells. Results We show that most FA genes are highly expressed in primitive CD34-positive and negative cells compared to lower levels in more differentiated cells. However, in CD34- stem cells the Fancc gene was found to be expressed at low levels while Fancg was undetectable in this population. Furthermore, Fancg expression is significantly decreased in Fancc -/- stem cells as compared to wild-type cells while the cancer susceptibility genes Brca1 and Fancd1/Brac2 are upregulated in Fancc-/- hematopoietic cells. Conclusions These results suggest that FA genes are regulated at the mRNA level, that increased Fancc expression in LTS-CD34+ cells correlates with a role at the CD34+ differentiation stage and that lack of Fancc affects the expression of other FA gene, more specifically Fancg and Fancd1/Brca2, through an unknown mechanism.

  8. Mid-infrared study of the molecular structure variability of insoluble organic matter from primitive chondrites

    Science.gov (United States)

    Orthous-Daunay, F.-R.; Quirico, E.; Beck, P.; Brissaud, O.; Dartois, E.; Pino, T.; Schmitt, B.

    2013-03-01

    Insoluble Organic Matter (IOM) found in primitive meteorites was formed in the Early Solar System and subsequently processed on the parent asteroids. The location, temporal sequence and processes of formation of this IOM are still a matter of debate. In particular, there is no consensus on the actual effect of post-accretional aqueous alteration processes on the chemical composition and structure of IOM. In the most primitive chondrites (types 1 and 2), these alterations have so far been either neglected or generically assigned to oxidation processes induced by fluid circulation. A series of IOM samples extracted from 14 chondrites with extensively documented post-accretional histories have been studied by infrared spectroscopy. Aqueous alteration shows no detectable effect on the chemical composition and structure of IOM within or across chondrite classes. Indeed, the most effective post-accretional process appears to be a high-temperature short-duration heating event and concerns essentially type 2 chondrites. In any case, post-accretional processes cannot account for all the chemical and structural variations of IOM. Chondrites from the CI, CR and CM classes accreted IOM precursors with moderately variable compositions, suggesting a chemical heterogeneity of the protosolar disk. The 3.4 μm band, and possibly its overtones and combinations in the near-infrared range, appear to be tracer(s) of the chemical class and possibly of surface heating processes triggered by impacts.

  9. Classical and molecular cytogenetic characterization of Agonostomus monticola, a primitive species of Mugilidae (Mugiliformes).

    Science.gov (United States)

    Nirchio, Mauro; Oliveira, Claudio; Ferreira, Irani A; Martins, Cesar; Rossi, Anna Rita; Sola, Luciana

    2009-01-01

    This study reports the first description of the karyotype of Agonostomus monticola, a species belonging to a genus which is considered to be the most primitive among living mugilid fish. Specimens from Panama and Venezuela were cytogenetically analysed by conventional chromosome banding (Ag and base-specific-fluorochrome staining, C-banding) and by fluorescent in situ hybridization (FISH). Agonostomus monticola showed a chromosome complement of 2n = 48, composed of 23 acrocentric and one subtelocentric chromosome pairs and a pericentromeric distribution of the C-positive heterochromatin in all chromosomes. Major ribosomal genes were found to be located on the short arms of the subtelocentric chromosome pair number 24 and minor ribosomal genes in a paracentromeric position of a single medium-sized chromosome pair. All these observed cytogenetic features are similar to those previously described in four representatives of two genera, Liza and Chelon, which are considered to be among the most advanced in the family. Thus, this karyotypic form might represent the plesiomorphic condition for the mullets. This hypothesis regarding the plesiomorphic condition, if confirmed, would shed new light on the previously inferred cytotaxonomic relationships for the studied species of Mugilidae, because the karyotype with 48 acrocentric chromosomes, which has been so far regarded as primitive for the family, would have to be considered as derived.

  10. Conservative multimodal management of a primitive neuroectodermal tumor of the thyroid

    Directory of Open Access Journals (Sweden)

    Juliette Haudebourg

    2013-04-01

    Full Text Available Primitive neuroectodermal tumors (PNET represent 1% of sarcomas. Head and neck peripheral PNETs have an intermediate prognosis between abdominopelvic disease and extremities. We here report the case of a 40-year old male who presented with primitive neuroectodermal tumor of the thyroid and was treated by multimodal treatment, including surgery, chemotherapy and intermediate dose radiotherapy. The patient is alive and fit with a functional larynx at 27 months. Multimodal treatments yield five-year survival rates of about 60%. Major drug regimens use vincristine, doxorubicin, ifosfamide or cyclophosphamide, dactinomycin and/or etoposide. Complete surgical excision is undertaken whenever possible to improve long-term survival. However, the relative radiosensitivity of tumors of the Ewing family, suggest multimodal treatment including adjuvant conformal radiotherapy in case of positive margins or poor response to chemotherapy rather than resection with 2-3 cm margins, which would imply laryngeal sacrifice for thyroid tumors. The role of expert rare tumor networks is crucial for optimal decision-making and management of such rare tumors on a case by case basis.

  11. Hierarchical HMM based learning of navigation primitives for cooperative robotic endovascular catheterization.

    Science.gov (United States)

    Rafii-Tari, Hedyeh; Liu, Jindong; Payne, Christopher J; Bicknell, Colin; Yang, Guang-Zhong

    2014-01-01

    Despite increased use of remote-controlled steerable catheter navigation systems for endovascular intervention, most current designs are based on master configurations which tend to alter natural operator tool interactions. This introduces problems to both ergonomics and shared human-robot control. This paper proposes a novel cooperative robotic catheterization system based on learning-from-demonstration. By encoding the higher-level structure of a catheterization task as a sequence of primitive motions, we demonstrate how to achieve prospective learning for complex tasks whilst incorporating subject-specific variations. A hierarchical Hidden Markov Model is used to model each movement primitive as well as their sequential relationship. This model is applied to generation of motion sequences, recognition of operator input, and prediction of future movements for the robot. The framework is validated by comparing catheter tip motions against the manual approach, showing significant improvements in the quality of catheterization. The results motivate the design of collaborative robotic systems that are intuitive to use, while reducing the cognitive workload of the operator.

  12. A Primitive Memory System for Attention Deployments: Some Recent Challenges and Their Resolution

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    Árni Kristjánsson

    2011-05-01

    Full Text Available In the past my colleagues and I have presented evidence for the existence of a primitive memory for attention deployments. This memory system orients attention to features and locations of recent behavioral importance. A large part of the proposal is that the memory system facilitates attentional selection of features in the environment such as color, orientation, etc. I will review the findings behind these proposals. The bulk of this evidence comes from studies of history effects in vision, such as priming of visual search, and implicit learning in exogenously cued attention shifts. In addition, recent challenges to this view will be discussed (in particular, arguments that the facilitation from repetition in visual search tasks occurs at a relatively late stage of perceptual processing. Our recent investigations of these proposals suggest that there is indeed evidence for higher-level priming effects in visual search under certain conditions, but those findings do not challenge the basic proposals regarding the primitive memory system, since the evidence for feature-specific facilitation is robust.

  13. Oct4 is required ~E7.5 for proliferation in the primitive streak.

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    Brian DeVeale

    2013-11-01

    Full Text Available Oct4 is a widely recognized pluripotency factor as it maintains Embryonic Stem (ES cells in a pluripotent state, and, in vivo, prevents the inner cell mass (ICM in murine embryos from differentiating into trophectoderm. However, its function in somatic tissue after this developmental stage is not well characterized. Using a tamoxifen-inducible Cre recombinase and floxed alleles of Oct4, we investigated the effect of depleting Oct4 in mouse embryos between the pre-streak and headfold stages, ~E6.0-E8.0, when Oct4 is found in dynamic patterns throughout the embryonic compartment of the mouse egg cylinder. We found that depletion of Oct4 ~E7.5 resulted in a severe phenotype, comprised of craniorachischisis, random heart tube orientation, failed turning, defective somitogenesis and posterior truncation. Unlike in ES cells, depletion of the pluripotency factors Sox2 and Oct4 after E7.0 does not phenocopy, suggesting that ~E7.5 Oct4 is required within a network that is altered relative to the pluripotency network. Oct4 is not required in extraembryonic tissue for these processes, but is required to maintain cell viability in the embryo and normal proliferation within the primitive streak. Impaired expansion of the primitive streak occurs coincident with Oct4 depletion ∼E7.5 and precedes deficient convergent extension which contributes to several aspects of the phenotype.

  14. A Novel Non-Invasive Selection Criterion for the Preservation of Primitive Dutch Konik Horses.

    Science.gov (United States)

    May-Davis, Sharon; Brown, Wendy Y; Shorter, Kathleen; Vermeulen, Zefanja; Butler, Raquel; Koekkoek, Marianne

    2018-02-01

    The Dutch Konik is valued from a genetic conservation perspective and also for its role in preservation of natural landscapes. The primary management objective for the captive breeding of this primitive horse is to maintain its genetic purity, whilst also maintaining the nature reserves on which they graze. Breeding selection has traditionally been based on phenotypic characteristics consistent with the breed description, and the selection of animals for removal from the breeding program is problematic at times due to high uniformity within the breed, particularly in height at the wither, colour (mouse to grey dun) and presence of primitive markings. With the objective of identifying an additional non-invasive selection criterion with potential uniqueness to the Dutch Konik, this study investigates the anatomic parameters of the distal equine limb, with a specific focus on the relative lengths of the individual splint bones. Post-mortem dissections performed on distal limbs of Dutch Konik ( n = 47) and modern domesticated horses ( n = 120) revealed significant differences in relation to the length and symmetry of the 2nd and 4th Metacarpals and Metatarsals. Distal limb characteristics with apparent uniqueness to the Dutch Konik are described which could be an important tool in the selection and preservation of the breed.

  15. Tubulin post-translational modifications in the primitive protist Trichomonas vaginalis.

    Science.gov (United States)

    Delgado-Viscogliosi, P; Brugerolle, G; Viscogliosi, E

    1996-01-01

    Using several specific monoclonal antibodies, we investigated the occurrence and distribution of different post-translationally modified tubulin during interphase and division of the primitive flagellated protist Trichomonas vaginalis. Immunoblotting and immunofluorescence experiments revealed that interphasic microtubular structures of T. vaginalis contained acetylated and glutamylated but non-tyrosinated and non-glycylated [Brugerolle and Adoutte, 1988: Bio Systems 21: 255-268] tubulin. Immunofluorescence studies performed on dividing cells showed that the extranuclear mitotic spindle (or paradesmosis) was acetylated and glutamylated, which contrast with the ephemeral nature of this structure. Newly formed short axostyles also contained acetylated and glutamylated tubulin suggesting that both post-translational modifications might take place very early after assembly of microtubular structures. Our results indicate that acetylation and glutamylation of tubulin appeared early in the history of eukaryotes and could reflect the occurrence of post-translational modifications of tubulin in the primitive eukaryotic cells. These cells probably had a highly ordered cross-linked microtubular cytoskeleton in which microtubules showed a low level of subunit exchange dynamics.

  16. The neonatal marmoset monkey ovary is very primitive exhibiting many oogonia

    Science.gov (United States)

    Fereydouni, B; Drummer, C; Aeckerle, N; Schlatt, S; Behr, R

    2014-01-01

    Oogonia are characterized by diploidy and mitotic proliferation. Human and mouse oogonia express several factors such as OCT4, which are characteristic of pluripotent cells. In human, almost all oogonia enter meiosis between weeks 9 and 22 of prenatal development or undergo mitotic arrest and subsequent elimination from the ovary. As a consequence, neonatal human ovaries generally lack oogonia. The same was found in neonatal ovaries of the rhesus monkey, a representative of the old world monkeys (Catarrhini). By contrast, proliferating oogonia were found in adult prosimians (now called Strepsirrhini), which is a group of ‘lower’ primates. The common marmoset monkey (Callithrix jacchus) belongs to the new world monkeys (Platyrrhini) and is increasingly used in reproductive biology and stem cell research. However, ovarian development in the marmoset monkey has not been widely investigated. Herein, we show that the neonatal marmoset ovary has an extremely immature histological appearance compared with the human ovary. It contains numerous oogonia expressing the pluripotency factors OCT4A, SALL4, and LIN28A (LIN28). The pluripotency factor-positive germ cells also express the proliferation marker MKI67 (Ki-67), which has previously been shown in the human ovary to be restricted to premeiotic germ cells. Together, the data demonstrate the primitiveness of the neonatal marmoset ovary compared with human. This study may introduce the marmoset monkey as a non-human primate model to experimentally study the aspects of primate primitive gonad development, follicle assembly, and germ cell biology in vivo. PMID:24840529

  17. Peripheral primitive neuroendocrine tumor of the chest wall—A case report with pathological correlation

    Directory of Open Access Journals (Sweden)

    Jidi Gao, MD

    2018-04-01

    Full Text Available Primitive neuroectodermal tumor is a high-grade malignant tumor originating from the neural crest and neuroectoderm, which can be subdivided into central and peripheral categories. Peripheral primitive neuroectodermal tumor is thought to be identical to Ewing's sarcoma, and falls under a broader category of Ewing's sarcoma family of tumors. Very rarely, it may present without osseous involvement, known as extraosseous Ewing's sarcoma. Here we present a case of a 38-year-old woman, who presented with several-month history of a slow-growing chest wall mass, initially thought to be a breast mass. The mass was diagnosed as extraosseous Ewing's sarcoma upon tissue biopsy. The patient was started on a dose-intensified neoadjuvant therapy, based on protocol from pediatric population given rarity of this tumor in the adult population. While the patient was initially planned for surgical resection, the tumor showed excellent response to chemotherapy on follow-up imaging, and radiation therapy was elected in lieu of resection. Keywords: Chest wall tumors, Peripheral PNET, Ewing's sarcoma

  18. EUS-FNA for the Diagnosis of Retroperitoneal Primitive Neuroectodermal Tumor

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    Aijaz A. Sofi

    2011-01-01

    Full Text Available Primitive neuroectodermal tumor (PNET is a rare “small round blue cell tumor” that is diagnosed by open biopsy or percutaneous biopsy of the lesion under radiologic guidance. In this case report, we present a novel approach to the diagnosis of a retroperitoneal PNET by endoscopic ultrasound- (EUS- guided fine needle aspiration (FNA. A 35-year-old man presented with the history of left-sided flank pain and swelling of 3-weeks duration. Computerized tomography (CT scan of his abdomen revealed a 12.8 × 13 × 12.5 cm cystic and solid mass arising from the retroperitoneum and displacing the third and fourth portions of the duodenum. He underwent EUS which revealed a well-circumscribed heterogeneous mass abutting the inferior portion of the stomach. EUS-FNA of the mass revealed malignant cells consistent with primitive neuroectodermal tumor (PNET/Ewing's sarcoma. EUS-guided FNA is an appropriate technique for diagnosing retroperitoneal PNET/Ewing's sarcoma.

  19. Penskalaan Butir Format Respons Pilihan dan Respons Bebas Berdasarkan Model Rasch dan Partial Credit

    OpenAIRE

    Eko Hariadi

    2007-01-01

    Penelitian melihat pengaruh jumlah parameter butir, kategori respons bebas (RB), pengaruh sampel terhadap akurasi estimasi parameter kemampuan untuk menghasilkan estimasi yang stabil dan pengaruh pembobotan butir RP dan butir RB terhadap kesalahan baku. Penelitian dalam dua tahap, simulasi menggunakan 30 kondisi dengan replikasi 50 dengan variabel panjang tes, jumlah kategori, dan jumlah parameter butir, dan analisis deskriptif, dilanjutkan penerapan penskalaan gabungan butir tipe res...

  20. Metode Sederhana dan Efektif untuk Penghitungan dan Visualisasi Tiga Dimensi (3D) Biofilm Vibriio Cholera

    OpenAIRE

    Kurniawan, Andi; Fadjar, Mohamad; Sukoso, Sukoso; Prihanto, Asep Awaludin

    2015-01-01

    Mikroorganisme yang mampu menghasilkan biofim menimbulkan masalah yang serius dalam bidang kesehatan dan pangan. Penelitian biofim bagi sebagian peneliti sangat identik dengan kerumitan proses penghitungan dan visualisasi penutupan permukaan substrat penempelan bakteri. Penelitian ini ditujukan untuk mengetahui efiiensi metode alternatif untuk menghitung dan memvisualisasikan biofimVibrio cholera. Pada penelitian ini beberapa faktor lingkungan seperti pH, suhu, dan kondisi kultur diujicobakan...

  1. Valeurs bibliophiles dans la langue française presentes en Bucovine (XVII-eme-XVIII-eme siecles

    Directory of Open Access Journals (Sweden)

    Olimpia Mitric

    2011-07-01

    Full Text Available Comme on le sait, la Moldavie a été la plus réceptive des trois provinces roumaines à la culture française. Dans cette province-ci, les contacts avec le mouvement d'idées européen ont été plus puissants. La lutte d'affirmation nationale a mené à l'augmentation de la conscience politique de la société moldave et à une participation plus accentuée à la vie politique. Le goût pour la lecture a évolue, aussi, pendant que la mentalité a commencé se transformer; on sollicite et ensuite traduit les oeuvres dans lesquelles apparaissent les idées sociales politiques, l'histoire universelle, la géographie, les conquêtes de la technique ou la littérature philosophique-moralisatrice. Les plus anciennes copies en roumain des oeuvres traduites du français, qui se trouvent dans nos bibliothèques datent de la fin du XVIII-ème siècle. Celles-ci sont des traductions de Voltaire, Marmontel, Ambrosius Marlianus, Francesco Loredano, Fénélon, Johan Thuresson Oxenstiern, Gabriel Pérau, Alain Réné Lesage, André Guillaume Constant d' Orville. Le livre imprimé (inclusivement jusqu' en 1800 provient des ateliers typographiques de Paris, Londres, Genève, Regensburg, Basel et Berlin. Le plus ancien exemplaire, Le tableau de L'Europe, est imprimé à Paris, en 1651. Pour ceux qui s'y intéressent, nous avons organisé la liste de ces livres, sur catégories de détenteurs.

  2. Transgression, Nostalgia, Order: Representation of the Primitive in Émile Zola's La Terre and Knut Hamsun's Markens grøde

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    Riikka Rossi

    2012-03-01

    Full Text Available This article examines the representation of the primitive in two peasant novels, Émile Zola's La Terre (1887, trans. as The Earth and Knut Hamsun's Markens grøde (1917, trans. as Growth of the Soil. The concept of the primitive crosses a wide range of issues that were central to naturalist and decadent literature at the turn of the twentieth century, from unconscious instincts to the fascination with exotic cultures. It thus offers a fruitful medium for the comparative reading of French and Nordic fiction of the era. I especially focus on analysing the diverse, representative practices of Zola's and Hamsun's works, which betray stylistic differences in their portrayal of the primitive. I suggest that by describing the primitive as a vital, transgressive force that even turns against itself - against nature - Zola's La Terre creates a decadent version of the primitive, which, instead of a "serious", naturalistic portrayal of everyday life, is drawn to the brutal, instinctive primitive and uses the primitive to create vital forces of transgression. Hamsun's neo-naturalist novel, in turn, reconfigures the naturalist themes in a new form and envisions a fusion of the Darwinian, naturalistic primitive and the Romantic cult of innocent primordiality, suggesting the primitive lifestyle as a nostalgic return to a pre-modern lifestyle and a turn away from the degeneration of modernity.

  3. Aesthetic primitivism revisited: The global diaspora of ‘primitive art’ and the rise of indigenous modernisms

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    Ruth B. Phillips

    2015-06-01

    Full Text Available This paper examines the global export of the construct of primitive art which developed in Europe in the early-twentieth century and the catalytic role it played in the emergence of modernist art forms produced by Indigenous peoples. It argues for the need to distinguish between sociological primitivism grounded in cultural evolutionist theory and the aesthetic primitivism promoted by artists, ethnologists and patrons who admired and appropriated the traditional arts of non-Western peoples classified as 'primitive.' Case studies of two refugees from Nazi Europe, German ethnologist Leonhard Adam and Austrian artist George Swinton, demonstrate the tension between received understandings of primitive art and these men's growing awareness, following emigration, of Indigenous modernities. It also led to their active promotion of modern Australian Aboriginal and Inuit arts, despite the undoubted links between aesthetic primitivism and the oppressive assimilationist policies justified through sociological primitivism.

  4. Fate of the three embryonic dural sinuses in infants: the primitive tentorial sinus, occipital sinus, and falcine sinus.

    Science.gov (United States)

    Mizutani, Katsuhiro; Miwa, Tomoru; Akiyama, Takenori; Sakamoto, Yoshiaki; Fujiwara, Hirokazu; Yoshida, Kazunari

    2018-03-01

    The primitive tentorial, occipital, and falcine sinuses are thought to attain the adult pattern or regress between the fetal stage and adulthood. The anatomy of these three primitive dural sinuses has seldom been studied in the infant population, and it remains unclear when these dural sinuses reach the adult condition. Using computed tomography digital subtraction venography (CT-DSV), we analyzed the anatomy of these embryonic dural sinuses in infants. We included 13 infants who underwent CT-DSV prior to neurosurgery and 35 cases with unruptured cerebral aneurysms as normal adult controls. Three embryonic dural sinuses, i.e., the primitive tentorial, occipital, and falcine sinuses, were retrospectively analyzed in CT-DSV images of infants and adults. We also analyzed the drainage patterns of the superficial middle cerebral vein (SMCV), determined by the connection between the primitive tentorial sinus and the cavernous sinus. The primitive tentorial, occipital, and falcine sinuses were present in 15.4%, 46.2%, and none of the infants, respectively, and in 10.0, 8.6, and 2.9% of the adults, respectively. The difference in SMCV draining pattern between infants and adults was insignificant. The incidence of the occipital sinus was significantly higher in infants than in adults. The connection between the primitive tentorial sinus and the cavernous sinus appears to be established before birth. The occipital sinus is formed at the embryonic stage and mostly regresses after infancy. The falcine sinus is usually obliterated prenatally. Our findings form the basis for interventions by pediatric interventional neuroradiologists and neurosurgeons.

  5. «Que la vie du monde est infinie»: Montaigne y la tesis de la eternidad del mundo

    Directory of Open Access Journals (Sweden)

    Jordi Bayod

    2010-12-01

    Full Text Available Montaigne insère en De la liberté de conscience un commentaire sur la destruction de la culture classique par les chrétiens qui ne peut que nous faire penser au  chapitre II, 5 des Discorsi de Machiavel. Or, le problème de fond examiné par le florentin dans ce chapitre, la brièveté de la mémoire humaine comme objection à la thèse de l’éternité du monde, semble avoir intéressé aussi l’auteur des Essais. C’est ce que suggèrent certaines pages de Des coches qui mettent expressément en question l’idée lucrétienne de la naissance et la nouveauté du monde.Ces pages, à leur tour, nous renvoient à une significative digression, ajoutée à l’Apologie de Raymond Sebond après 1588, sur des façons alternatives de concevoir le monde. Dans ces lignes audacieuses Montaigne présente comme vraisemblable un monde régi par une temporalité cyclique et beaucoup plus ancien qu’il n’était traditionnellement admis, peut-être «infini». Dans un autre lieu de l’Apologie nous trouvons, finalement, une péremptoire déclaration, de forte teinture stoïque, sur l’homogénéité de la nature a travers le temps. Son examen confirme, il nous semble, le grand intérêt que Montaigne a eu pour la thèse de l’éternité du monde.Montaigne inserts in “De la liberté de conscience” a commentary on the destruction of pagan culture by Christians that make us think in chapter II, 5 of Machiavelli’s Discorsi. Now, the main question studied by the Florentin in this chapter, the brevity of human memory as an objection to the thesis of the eternity of the world, also seems to have interested the author of the Essays. It is so suggested by certain pages of “Des coches” that call expressly in question the Lucretian idea of the birth and novelty of the world.These pages, in their turn, remit us to a significant digression, added after 1588 to the “Apologie”, about alternative ways of conceiving the world. In these bold lines

  6. Purwarupa Sistem Integrasi Quadcopter dan Mobile Robot

    OpenAIRE

    Dharmawan, Andi; Lusiarta Putera, Christian Antonia

    2012-01-01

    AbstrakQuadcopter, juga dikenal sebagai quadrotor, adalah helikopter dengan empat motor yang dilengkapi dengan  empat buah propeller pada masing-masing motornya yang digunakan untuk terbang dan bermanuver. Pada quadcopter terdapat 3 variabel sudut yang menjadi element utama dalam pengendaliannya yaitu roll, pitch, dan yaw yang diperoleh dari penggabungan sensor accelerometer, gyroscope dan magnetometer dengan metode Direction Cosine Matrix. Pada sistem integrasi mobile robot dan quadcopter, d...

  7. Review Dendrimer : Definisi, Sintesis, Aplikasi Dan Prospektif

    OpenAIRE

    Rahmi, Dwinna

    2013-01-01

    Dendrimer merupakan makrostruktur monodisperse dengan banyak cabang yang homogen dan degree of branching (DB) 100%. Dua cara sintesis dendrimer yaitu convergent dan divergent dilakukan. Convergent dilakukan dengan reaksi kovalen antara dua dan lebih monomer. Divergent dimulai dengan pembentukan inti dilanjutkan dengan pembentukan cabang yang merupakan group fungsional yang aktif. Sejauh ini dendrimer sudah banyak diterapkan pada bidang farmasi yaitu drug delivery dan non farmasi pada proses i...

  8. Rancang Bangun Aplikasi Enkripsi dan Dekripsi Email Dengan Menggunakan Algoritma Advanced Encryption Standard Dan Knapsack

    Directory of Open Access Journals (Sweden)

    Timothy John Pattiasina

    2014-07-01

    Full Text Available Advanced Encryption Standard (AES dan Knapsack adalah dua algoritma enkripsi simetris dan asimetris yang paling sering digunakan. Penelitian ini menganalisa kedua algoritma AES dan algoritma Knapsack. Prototipe aplikasi enkripsi email ini dirancang dengan menggabungkan karateristik algoritma AES dan Knapsack untuk memecahkan masalah keamanan email. Algoritma AES digunakan untuk mengenkripsi dan deskripsi email berupa teks atau file, sedangkan Algoritma Knapsack di gunakan untuk mengenkripsi kunci AES. Enkripsi hybrid yang diterapkan pada aplikasi bertujuan untuk menambah keamanan informasi dalam sebuah jaringan.

  9. KORELASI ANTARA ISLAM DAN EKONOMI

    Directory of Open Access Journals (Sweden)

    Akmal Zainal Abidin

    2015-03-01

    Full Text Available CORELATION BETWEEN ISLAM AND ECONOMY. This paper aims to identifies about the correlation between economic and Islam. Islam is the perfect religion that governs all things in life, including the economy. This is evident with the concept of  well-being which is described in the al-Quran and Sunnah. Basically the goal of every human life is to prosper, although humans make sense of  well- being with a different perspective. Most understand economics assume that welfare is the welfare of  earthly material. But to make sense of well-being with the term al-Falah, is meaning holistic wellbeing and balance between material and spiritual dimensions. al-Quran and Sunnah have taught that the human being will be achieved if  living in balance between material and spiritual. This is because human life does not just stop in the life of this world, but there is still a second life that will be faced by humanity in the hereafter, and well-being will be achieved with the truth is that people can balance the needs of the world and the hereafter, and that is what is taught in Islamic economics. Keywords: Islam, Economy, Prosperity. Tulisan ini bertujuan untuk menjelasakn tentang korelasi antara ekonomi  dan  Islam.  Islam  adalah  agama  yang  sempurna  yang mengatur segala hal dalam kehidupan ini, termasuk juga ekonomi. Hal ini terbukti dengan konsep kesejahteraan yang dipaparkan dalam al-Quran dan Sunnah. Pada dasarnya tujuan hidup setiap manusia adalah untuk mencapai kesejahteraan, meskipun manusia memaknai kesejahteraan dengan perspektif  yang berbeda-beda. Sebagian besar paham ekonomi menganggap bahwa kesejahteraan adalah kesejahteraan material duniawi. Namun Islam memaknai kesejahteraan dengan istilah  Falah  yang  berarti  kesejahteraan  holistik  dan  seimbang antara dimensi material dan spiritual. Al-Quran dan Sunnah telah mengajarkan bahwa kesejahteraan akan tercapai jika manusia menjalani hidup secara seimbang antara material dan

  10. Karakteristik Dan Spektrum Manajemen Pendidikan Islam

    OpenAIRE

    Jannah, Siti Raudhatul

    2013-01-01

    Artikel ini mendiskusikan mengenai manajemen pendidikan Islam, karakteristik, dan spektrumnya. Karakteristik manajemen pendidikan Islam harus didasarkan pada al-Qur'an dan Hadits serta pemikiran rasional yang telah diuji validitasnya. Spektrum manajemen pendidikan Islam meliputi lingkup manajemen personalia pendidikan Islam, manajemen peserta didik pendidikan Islam, maanjemen kurikulum pendidikan Islam, manajemen keuangan pendidikan Islam, manajemen sarana dan prasarana pendidikan Islam, mana...

  11. PRODUKSI NANOFIBER DAN APLIKASINYA DALAM PENGOLAHAN AIR

    OpenAIRE

    Krisnandika, Vania Elita

    2017-01-01

    Abstrak Kebutuhan air meningkat seiring meningkatnya jumlah penduduk dan taraf kehidupan masyarakat. Pembangunan yang dilakukan secara terus-menerus dan sangat cepat di Indonesia mengakibatkan penurunan kualitas air permukaan. Teknologi membran merupakan salah satu teknologi pengolahan air yang menghasilkan produk dengan kualitas tinggi. Membran berstruktur nano, khususnya nanofiber, saat ini menjadi perhatian karena menjawab kebutuhan teknologi filtrasi yang efektif dan hemat biaya. Pr...

  12. DETEKSI DAN MANAJEMEN REFEEDING SYNDROME

    Directory of Open Access Journals (Sweden)

    Darmadi Darmadi

    2012-09-01

    Full Text Available AbstrakRefeeding syndrome (RFS dideskripsikan sebagai perubahan biokimiawi, manifestasi klinis dan komplikasi sebagai konsekuensi pemberian nutrisi pada pasien kurang gizi. Refeeding syndrome ini menyebabkan dampak buruk dan kematian. Sindroma ini lebih sering terjadi pada kelompok risiko. Refeeding syndrome merupakan suatu sindroma yang sering tak terdiagnosis oleh karena itu perlu peningkatan pengetahuan dan kesadaran dari tenaga medis untuk mengurangi morbiditas dan mortalitas dari RFS. Karena alasan tersebut ditulis tinjauan pustaka ini yang akan membahas mengenai patofisiologi, faktor risiko, manifestasi klinis, dan manajemennya.Kata kunci : refeeding syndrome, kurang gizi, hipofosfatemia, dukungan nutrisiAbstractRefeeding syndrome (RFS describel as biochemical changes, clinical manifestations, and complications that can occur as a consequence of feeding a malnourished individual. RFS can result in serious harm and death. RFS more commonly occurs in at-risk populations. Increased awareness amongst healthcare professionals is likely to reduce morbidity and mortality. This review examines the pathophysiology, risk factors, clinical manifestations, and management of RFS.Key word : refeeding syndrome, malnourished, hypophosphatemia, nutritional support

  13. Islam, Media, dan Politik : Sebuah Perdebatan dan Kontempelasi Nilai Berdemokrasi

    Directory of Open Access Journals (Sweden)

    Idil Akbar

    2016-10-01

    Full Text Available Infact, press or media is one of pilar democracy. Media in democracy is a public sphere to communi-cation and makes relation, and a same time as public arena to gain information. But, media also could not release from streotypes and tendency that usually bring of interest, either the owner or ideology. It is meaning media can not released from perspective distorsion, values bias and take a side. Media also effective to become propaganda instrument for a political interest and an ideology. It is seen like how media in US, for example, stereotype of Islam in discourses contradiction and glob-al interest opposition. Then, Islam dominantly identified as doctrine teaches radicalism, fundamen-talism and terorism. Thus, it is often be justification for US to operate the military mission in the name of democracy. Tak dipungkiri pers atau media menjadi salah satu pilar bagi demokrasi. Media dalam demokrasi adalah sebagai ruang bagi publik berkomunikasi dan berinteraksi, sekaligus sarana publik mem-peroleh informasi tentang banyak hal. Namun, media juga tak bisa dilepaskan dari stereotip dan kecenderungan-kecenderungan, yang biasanya membawa kepentingan, baik pemilik maupun ide-ologi. Media karenanya tak lepas dari distorsi perspektif, bias nilai dan berpihak. Media juga efektif menjadi alat propaganda bagi sebuah kepentingan politik dan ideologi, seperti bagaimana media di negara Amerika, misalnya, menstereotipkan Islam dalam analisis pertentangan wacana dan kepent-ingan global. Sehingga, dominan Islam diidentikkan dengan sematan sebagai ajaran yang mengajarkan radikalisme, fundamentalisme dan terorisme. Karenanya pula seringkali menjadi alasan pembenar bagi Amerika untuk menjalankan misi militer atas nama demokrasi.

  14. Phase diagram of the restricted primitive model: charge-ordering instability

    Directory of Open Access Journals (Sweden)

    O.V.Patsahan

    2004-01-01

    Full Text Available We study the phase behaviour of the restricted primitive model (RPM using a microscopic approach based on the method of collective variables with a reference system. Starting from the Hamiltonian of the RPM we derive the functional of the grand partition function given in terms of the two collective variables: the collective variables ρk and ck describing fluctuations of the total number density and charge density, respectively. Within the framework of the Gaussian approximation we found the boundary of stability with respect to fluctuations of the charge density. It is shown that due to the approximated character of the theory the boundary of stability is very sensitive to the particular choice of the long-range part of potential inside the hard core. This point is discussed in more detail.

  15. Computer simulations of the restricted primitive model at very low temperature and density

    International Nuclear Information System (INIS)

    Valeriani, Chantal; Camp, Philip J; Zwanikken, Jos W; Van Roij, Rene; Dijkstra, Marjolein

    2010-01-01

    The problem of successfully simulating ionic fluids at low temperature and low density states is well known in the simulation literature: using conventional methods, the system is not able to equilibrate rapidly due to the presence of strongly associated cation-anion pairs. In this paper we present a numerical method for speeding up computer simulations of the restricted primitive model (RPM) at low temperatures (around the critical temperature) and at very low densities (down to 10 -10 σ -3 , where σ is the ion diameter). Experimentally, this regime corresponds to typical concentrations of electrolytes in nonaqueous solvents. As far as we are aware, this is the first time that the RPM has been equilibrated at such extremely low concentrations. More generally, this method could be used to equilibrate other systems that form aggregates at low concentrations.

  16. Dynamic contrast enhanced MRI study of primary primitive neuroectodermal tumor in the thoracic spine

    International Nuclear Information System (INIS)

    Chen Yu; Xu Jianmin; Li Ying; Zhang Jingzhong; Zhu Jing

    2004-01-01

    Objective: To investigate the value of dynamic contrast-enhanced MR imaging in the diagnosis and differentiation of primitive neuroectodermal tumor (PNET) in the thoracic spine. Methods: The dynamic contrast-enhanced MR imaging of 2 patients (3 times) with PNET in the thoracic spine proved by surgery and pathology were prospectively studied. Results: In the curves of SI-time and CER-time, PNET in the thoracic spine showed a rapid rise to the peak between 60 s and 120 s, then the flat level was kept and no obvious decline was detected after about 3.5 minute. Conclusion: Dynamic contrast-enhanced MRI can help to make the diagnosis and differential diagnosis for PNET in the thoracic spine, offer reliable information for the choice of clinical management, and predict the prognosis

  17. Cooling and quasi-static contraction of the primitive solar nebula after gas accretion

    International Nuclear Information System (INIS)

    Watanabe, Seichiro; Nakagawa, Yoshitsugu; Nakazawa, Kiyoshi

    1990-01-01

    The evolution of the primitive solar nebula in the quasi-static contraction phase where the nebula cools down toward the thermal steady state is studied. The solar irradiation onto the nebula keeps the surface temperature constant, so that the convective ozone retreats from the surface as the nebula cools. Thus if thermal convection is the only source of turbulence, convection will quiet down in an early time of the cooling. Afterward, the nebula evolves toward an isothermal structure in a time scale of 1000 yr. The cooling rates in the vicinity of the midplate at 1 AU are 0.003 K/hr at T(c) = 1000 K and 3 x 10 to the -5th K/hr at T(c) = 300 K for the standard model. If some turbulence exists irrespective of convection, convection may continue for sufficiently strong turbulent heating. 39 refs

  18. Chemistry of primitive solar material. [nebular hypothesis of planetary systems formation

    Science.gov (United States)

    Barshay, S. S.; Lewis, J. S.

    1976-01-01

    The paper reviews chemical processes that occurred in the cooler outer regions of the primitive solar nebula (PSN) at the time of intimate chemical contact between the preplanetary condensate and the nebular gas. The elemental composition of the PSN is discussed, the 15 most abundant elements in it are listed, and numerical models of it are examined. Various condensation models are described and tested against observed properties of the planets, their satellites, and the asteroids. The chemistry of abundant volatile elements in the PSN is investigated along with stability limits of graphite in a solar-composition gas, regions of dominance of the most abundant carbon-containing gas species in the same gas, and implications of the moon's composition for its origin. Some theories that have been proposed as alternatives to the condensation models are noted.

  19. Calculation Scheme Based on a Weighted Primitive: Application to Image Processing Transforms

    Directory of Open Access Journals (Sweden)

    Gregorio de Miguel Casado

    2007-01-01

    Full Text Available This paper presents a method to improve the calculation of functions which specially demand a great amount of computing resources. The method is based on the choice of a weighted primitive which enables the calculation of function values under the scope of a recursive operation. When tackling the design level, the method shows suitable for developing a processor which achieves a satisfying trade-off between time delay, area costs, and stability. The method is particularly suitable for the mathematical transforms used in signal processing applications. A generic calculation scheme is developed for the discrete fast Fourier transform (DFT and then applied to other integral transforms such as the discrete Hartley transform (DHT, the discrete cosine transform (DCT, and the discrete sine transform (DST. Some comparisons with other well-known proposals are also provided.

  20. A three-dimensional spectral element model for the solution of the hydrostatic primitive equations

    CERN Document Server

    Iskandarani, M; Levin, J C

    2003-01-01

    We present a spectral element model to solve the hydrostatic primitive equations governing large-scale geophysical flows. The highlights of this new model include unstructured grids, dual h-p paths to convergence, and good scalability characteristics on present day parallel computers including Beowulf-class systems. The behavior of the model is assessed on three process-oriented test problems involving wave propagation, gravitational adjustment, and nonlinear flow rectification, respectively. The first of these test problems is a study of the convergence properties of the model when simulating the linear propagation of baroclinic Kelvin waves. The second is an intercomparison of spectral element and finite-difference model solutions to the adjustment of a density front in a straight channel. Finally, the third problem considers the comparison of model results to measurements obtained from a laboratory simulation of flow around a submarine canyon. The aforementioned tests demonstrate the good performance of th...

  1. Coordinates Analyses of Hydrated Interplanetary Dust Particles: Samples of Primitive Solar System Bodies

    Science.gov (United States)

    Keller, L. P.; Snead, C.; McKeegan, K. D.

    2016-01-01

    Interplanetary dust particles (IDPs) collected in the stratosphere fall into two major groups: an anhydrous group termed the "chondritic-porous (CP) IDPs and a hydrated group, the "chondritic-smooth (CS) IDPs, although rare IDPs with mineralogies intermediate between these two groups are known [1]. The CP-IDPs are widely believed to be derived from cometary sources [e.g. 2]. The hydrated CS-IDPs show mineralogical similarities to heavily aqueously altered carbonaceous chondrites (e.g. CI chondrites), but only a few have been directly linked to carbonaceous meteorite parent bodies [e.g. 3, 4]. Most CS-IDPs show distinct chemical [5] and oxygen isotopic composition differences [6-8] from primitive carbonaceous chondrites. Here, we report on our coordinated analyses of a suite of carbon-rich CS-IDPs focusing on their bulk compositions, mineralogy, mineral chemistry, and isotopic compositions.

  2. An analytical longitudinal dielectric function of primitive electrolyte solutions and its application in predicting thermodynamic properties

    International Nuclear Information System (INIS)

    Xiao, Tiejun

    2015-01-01

    In this paper, the longitudinal dielectric function ϵ_l(k) of primitive electrolyte solutions is discussed. Starting from a modified mean spherical approximation, an analytical dielectric function in terms of two parameters is established. These two parameters can be related to the first two decay parameters k_1_,_2 of the dielectric response modes of the bulk system, and can be determined using constraints of k_1_,_2 from statistical theories. Furthermore, a combination of this dielectric function and the molecular Debye-Hückel theory[J. Chem. Phys. 135(2011)104104] leads to a self-consistent mean filed description of electrolyte solutions. Our theory reveals a relationship between the microscopic structure parameters of electrolyte solutions and the macroscopic thermodynamic properties, which is applied to concentrated electrolyte solutions.

  3. Ion Irradiation Experiments on the Murchison CM2 Carbonaceous Chondrite: Simulating Space Weathering of Primitive Asteroids

    Science.gov (United States)

    Keller, L. P.; Christoffersen, R.; Dukes, C. A.; Baragiola, R. A.; Rahman, Z.

    2015-01-01

    Remote sensing observations show that space weathering processes affect all airless bodies in the Solar System to some degree. Sample analyses and lab experiments provide insights into the chemical, spectroscopic and mineralogic effects of space weathering and aid in the interpretation of remote- sensing data. For example, analyses of particles returned from the S-type asteroid Itokawa by the Hayabusa mission revealed that space-weathering on that body was dominated by interactions with the solar wind acting on LL ordinary chondrite-like materials [1, 2]. Understanding and predicting how the surface regoliths of primitive carbonaceous asteroids respond to space weathering processes is important for future sample return missions (Hayabusa 2 and OSIRIS-REx) that are targeting objects of this type. Here, we report the results of our preliminary ion irradiation experiments on a hydrated carbonaceous chondrite with emphasis on microstructural and infrared spectral changes.

  4. Performances of scintigraphy in the primitive hyperparathyroidism and the associated thyroid pathologies

    International Nuclear Information System (INIS)

    Monteil, J.; Mathonnet, M.; Chianea, T.; Cubertafond, P.; Piquet, L.; Rince, C.; Bournaud, E.; Verbeke, S.; Perdrisot, R.; Vandroux, J.C.

    1997-01-01

    The data from scintigraphic and echographic exploration were compared to the surgery results in 32 patients (29 F and 3 M) presenting a primitive hyperparathyroidism, biologically proved, associated to a thyroid pathology. The scintigraphies were achieved with a collimator placed anteriorly and oblique-anteriorly, 4 h after injection by iodine 123 (7 MBq) and 30 min and 2 h after injection of 99m Tc-MIBI (555 MBq). The cervical echography and scintigraphy are independently interpreted. The results are given in a table containing the sensitivity, specificity, V.P.P. and V.P.N. for scintigraphy and echography, respectively. The association of a primary hyperparathyroidism and of a thyroid pathology (with a prevalence of 70% in our region) appears to affect less the performances of scintigraphy imaging than those of morphologic imaging

  5. Construction of a magnetostrictive hysteresis operator using a tripod-like primitive hopfield neural network

    Science.gov (United States)

    Adly, A. A.; Abd-El-Hafiz, S. K.

    2018-05-01

    It is well known that accurate modeling of magnetostrictive hysteresis is crucial to different industrial applications. Although several magnetostrictive models have been developed in the past, the accuracy-efficiency balance has always been crucial. Recently, the possibility of constructing a primitive vector hysteresis operator using a tri-node Hopfield Neural Network (HNN) was demonstrated. Based upon the fact that mechanical stress along a certain direction results in dimensional deformation, this paper introduces a novel extension to the aforementioned recently developed approach. More specifically, a stress-driven evolution of a tri-node HNN hysteresis operator pair is proposed, thus yielding a tripod-like HNN pair having different input offset values. Model identification, sample simulation results and comparison with experimental measurements are given in the paper.

  6. Postoperative Paraplegia as a Result of Undiagnosed Primitive Neuroectodermal Tumor, Not Epidural Analgesia

    Directory of Open Access Journals (Sweden)

    Pei-Ching Hung

    2007-10-01

    Full Text Available Postoperative paraplegia is a rare complication after epidural analgesia and often occurs with spinal hematoma or cord injury. We present the case of a 16-year-old girl who suffered from a tumor mass in the neck and abdomen who underwent gynecologic operation. Preoperatively, liver metastasis was found by computed tomography. Pathologic findings revealed that the abdominal mass was an ovarian dermoid cyst. After the operation, the patient complained of paraplegia while receiving epidural analgesia for postoperative pain control. A peripheral primitive neuroectodermal tumor in the thoracic and lumbar spines with spinal cord compression was later detected using magnetic resonance imaging. Learning from this case, we suggest that when a patient is preoperatively diagnosed with tumor metastasis, back pain and soreness, spinal cord compression from tumor metastasis should be excluded before epidural analgesia is implemented.

  7. Congenital peripheral primitive neuroectodermal tumor: A case treated successfully with multimodality treatment

    International Nuclear Information System (INIS)

    Goyal, Sh.; Biswas, A.; Mohanti, B.K.; Gupta, R.

    2014-01-01

    Neonatal tumors comprise less than two percent of childhood malignancies. Most are solid tumors, most common histologies being teratoma and neuroblastoma. We encountered a child who was detected to have a right arm mass on antenatal sonogram, which was diagnosed to be a primitive neuroectodermal tumor involving the triceps on fine needle aspiration cytology performed in the post-natal period. The child was successfully treated with multimodality treatment consisting of surgery, chemotherapy and radiotherapy. We also discuss briefly the problems associated with therapy in neonatal period. A review of all cases reported to have congenital Ewing’s sarcoma family of tumors is presented. Novel therapies are needed to improve efficacy and decrease the devastating side effects of treatment in this age group.

  8. Primitive reflexes and cognitive function Reflexos primitivos e função cognitiva

    Directory of Open Access Journals (Sweden)

    Alfredo Damasceno

    2005-09-01

    Full Text Available BACKGROUND: Data on the prevalence of primitive reflexes (PR in adulthood, their pathological significance and relationship to age and cognition are controversial. OBJECTIVE: To study the relationship between PR and cognition in 30 patients with probable Alzheimer's disease (AD and 154 control subjects. METHOD: Diagnosis of probable AD was based on DSM-IV, NINCDS-ADRDA, and CAMDEX criteria. Primitive reflexes were quantified from zero (absent to 1 (mild or 2 (markedly present. The Cognitive Abilities Screening Instrument - Short Form (CASI-S was used to evaluate registration, temporal orientation, verbal fluency and recall. A drawing test was added. RESULTS: Most frequent PR among demented and controls were suck (77% and 62%, respectively and snout (60% and 27%, followed by glabellar (30% and 19%, paratonia (37% and 5%, and palmomental (23% and 5%. None of controls had more than three PR. Frequency of PR tended to increase with age and cognitive deterioration. Grasp and Babinski responses were found only in dementia patients. Primitive reflexes were not correlated with each other, except snout with suck, and snout with glabellar reflex. CONCLUSION: The finding of grasp and Babinski sign, or the presence of more than three primitive signs, particularly the combination of paratonia, snout, suck, and palmomental reflexes strongly suggests brain dysfunction, especially when these signs are marked and accompanied by deficits in orientation, recall, verbal fluency, and constructional praxis.CONTEXTO: A prevalência e significado patológico dos reflexos primitivos (RP no adulto, bem como sua relação com a idade e a cognição, são questões controversas. OBJETIVO: Estudar a relação entre RP e cognição em 30 pacientes com doença de Alzheimer (DA e 154 sujeitos controles normais. MÉTODO: O diagnóstico de DA baseou-se nos critérios DSM-IV, NINCDS-ADRDA e CAMDEX. Os RP foram quantificados de 0 (ausente a 1 (leve ou 2 (acentuado. CASI

  9. Primitive neuroectodermal tumor arising 8 years after chemotherapy and radiotherapy for acute lymphoblastic leukemia. Case report

    International Nuclear Information System (INIS)

    Yoshida, Yuya; Toma, Yasuo; Arai, Masayuki; Higashi, Ryo; Kashihara, Kengo; Kaizaki, Yasuharu

    2005-01-01

    We report a case of primitive neuroectodermal tumor (PNET) arising 8 years after chemotherapy and radiotherapy for acute lymphoblastic leukemia. A 15-year-old boy with a history of acute lymphoblastic leukemia, at the age of 7, underwent chemotherapy and 14 Gy of radiotherapy to the whole brain. He was admitted to our department due to the development of aphasia, right hemiparesis and generalized convulsive seizure. MRI showed an irregularly enhanced mass in the left frontal lobe. A gross total removal of the tumor was performed and histological examination showed it to be PNET. Postoperatively, the patient underwent 20 Gy of radiotherapy to the whole brain and 42 Gy of local radiotherapy. Follow-up MRI showed no evidence of recurrent tumor 4 months after the radiotherapy. This tumor was thought to be a secondary brain tumor arising in this survivor of childhood acute lymphoblastic leukemia and it is a rare complication of successful leukemia treatment. (author)

  10. Not so primitive: context-sensitive meta-learning about unattended sound sequences.

    Science.gov (United States)

    Todd, Juanita; Provost, Alexander; Whitson, Lisa R; Cooper, Gavin; Heathcote, Andrew

    2013-01-01

    Mismatch negativity (MMN), an evoked response potential elicited when a "deviant" sound violates a regularity in the auditory environment, is integral to auditory scene processing and has been used to demonstrate "primitive intelligence" in auditory short-term memory. Using a new multiple-context and -timescale protocol we show that MMN magnitude displays a context-sensitive modulation depending on changes in the probability of a deviant at multiple temporal scales. We demonstrate a primacy bias causing asymmetric evidence-based modulation of predictions about the environment, and we demonstrate that learning how to learn about deviant probability (meta-learning) induces context-sensitive variation in the accessibility of predictive long-term memory representations that underpin the MMN. The existence of the bias and meta-learning are consistent with automatic attributions of behavioral salience governing relevance-filtering processes operating outside of awareness.

  11. Solitary epidural brain metastasis of Neuroepithelioma (a Primitive Neuroectodermal Tumor: case report

    Directory of Open Access Journals (Sweden)

    Farnaz Farshidfar

    2008-08-01

    Full Text Available A 14 years old male was referred to Computerized tomography scan (CT of our hospital for evaluation of headache. The patient was known case of cervical soft tissue Primitive neuroectodermal tumor (PNET which has undergone surgery and radiotherapy 4 years ago. The CT scan showed large solitary extra axial, epidural lesion in right parietal region, with mass effect and bony involvement. Then surgery was done for him and the resultant biopsy was Neuroepithelioma. After diagnosis the patient has undergone chemotherapy and radiotherapy. He has no signs or symptoms of malignancy, and also follow up CT scan of the brain, chest, and abdomen were normal after two years of surgery. This is the first reported case of epidural metastasis of a head and neck PNET in an adolescent.

  12. Primitive Neuroectodermal Tumour in Young Adults - A Report of two Rare Cases and Review of Literature

    Directory of Open Access Journals (Sweden)

    Vidhya Lakshmi S

    2017-10-01

    Full Text Available Primitive Neuro Ectodermal Tumours’ (PNET are highly aggressive embryonal tumours of presumed neural crest origin. They are derived from neoplastic transformation of common progenitor cells in the sub ependymal matrix layer. They are more common in children. They are small round cell tumours affecting the central nervous system (CNS, others being Ewing’s sarcoma, medullobalstoma, lymphomas etc. They are classified based on their immune histochemical characteristics- neuronal, astrocytic, ependymal, retinal photo receptor, undifferentiated. Undifferentiated variety carries better prognosis. GFAP expression is an important prognostic factor. Presence of p53 germ line mutation indicates an increased risk for developing PNET. Spinal PNET are secondary to CSF metastasis from cranium commonly. Primary spinal PNET tumours are rare and extradural location is extremely rare. PNET needs multimodality approach but carries poor prognosis when compared to other CNS tumours.

  13. Ewing Sarcoma/Primitive Neuroectodermal Tumor of the Kidney: Two Unusual Presentations of a Rare Tumor

    Directory of Open Access Journals (Sweden)

    E. C. Castro

    2012-01-01

    Full Text Available Only few cases of primary renal Ewing's sarcoma have been reported in the literature to date. We present here two cases of renal ES/PNET with an uncanny presentation. The first case was discovered after the patient presented clinically with irradiating flank pain, mimicking the pain related with kidney stones. The second case had clinical presentation of pulmonary thromboembolism after the patient was involved in an automobilist accident. The tumors were mainly composed of small blue cells which by immunohistochemical were positive for neural markers, and FISH revealed the translocation 22q12 for the EWSR1 gene. The diagnosis of renal primitive neuroectodermal tumor/EWING tumor is very rare and usually involves several different diagnostic techniques. The differential diagnosis is usually broad with frequent overlapping features between the entities. The cases presented in this paper illustrated the difficulties with which routine anatomical pathologist is faced when dealing with rare renal poorly differentiated neoplasm in adults.

  14. Extraosseous Ewing's sarcoma / primitive neuroectodermal tumor of the sacral nerve plexus

    International Nuclear Information System (INIS)

    Narula, MK; Gupta, Nishant; Anand, Rama; Kapoor, Sudhir

    2009-01-01

    We report an unusual case of Ewing's sarcoma / primitive neuroectodermal tumor (PNET) of the sacral nerve plexus in a 9-year-old boy who presented with a soft tissue swelling and severe piercing pain in the lower back region. MRI of the lumbosacral spine showed a lobulated soft tissue mass with clubbed finger-like projections along the path of the sacral nerves, which had caused widening of the spinal canal and the sacral foramina (S2–S4 level). There was presacral extension and posterior scalloping of the sacral vertebrae. Histopathology of the lesion confirmed Ewing's sarcoma / PNET of the sacral spinal nerve plexus. The patient responded favorably to chemotherapy and radiotherapy, showing clinical and radiological improvement

  15. Musisi Sekuler dan Gerejawi

    Directory of Open Access Journals (Sweden)

    Benny Cristovel

    2007-12-01

    Full Text Available Menjadi seorang musisi tidak sekedar bermain musik atau menyanyi saja. Ada jenjang-jenjang yang akan dilewatidalam dunia musik, yang pada akhirnya setiap musisi dihadapkan kepada tanggung jawab dalam dunia tersebut. Di jaman ini, jika jenjang seorang musisi sudah tahap profesional, maka musik dan bisnis merupakan hal yang tidak terpisahkan. Jadi tidak heran jika ada banyak orang yang memimpikan untuk berkarier dalam bidang musik, bahkan telah men1adicita-cita sejak kecil.Jadi penting bagi musisi gerejawi benar-benar "mengkotakkan dirinya" terhadap persepsi yang dianut oleh musisi sekuler, bukan mencampurkannya. Hal ini sangat esensial, karena musisi gerejawi bukan melayani manusia melainkan oleh anugerah Tuhan dipercayakan pekerjaan ini. Dengan demikian pelayanan sebagai musisi gerejawi tidak tercemar oleh persepsi dari dunia musik sekuler. Selain itu musisi gerejawi dapat merefleksikan Tuhan yang disembahnya kepada dunia sekuler, karena tujuan dari semua yang dilakukannya adalah untuk kemuliaan nama Tuhan.

  16. Regulated proliferation of primitive hematopoietic progenitor cells in long-term human marrow cultures

    International Nuclear Information System (INIS)

    Cashman, J.; Eaves, A.C.; Eaves, C.J.

    1985-01-01

    We have examined the cycling status of various classes of erythroid and granulopoietic progenitor populations maintained for many weeks in standard normal long-term human marrow cultures. These were initiated with a single inoculum of marrow aspirate and were routinely fed by weekly removal of half of the nonadherent cells and replacement of half of the growth medium. Progenitors of large erythroid colonies (more than eight erythroblast clusters) present in the nonadherent fraction and progenitors of small granulocyte/macrophage colonies (fewer than 500 cells) present in both the nonadherent and adherent fractions were found to be actively cycling at all times examined (28% to 63% kill following a 20-minute exposure to 20 microCi/mL of high specific activity 3 H-thymidine). In contrast, progenitors of large granulocyte/macrophage colonies (more than 500 cells) and progenitors of large erythroid colonies (more than eight erythroblast clusters), present in the adherent layer, consistently alternated between a quiescent state at the time of each weekly medium change and a proliferating state two to three days later (0% to 13% kill and 21% to 49% kill, respectively). Additional experiments revealed that the activation of primitive progenitors in the adherent layer was not dependent on the addition of fresh glutamine or hydrocortisone, nor on the physical manipulations involved in changing the growth medium. These studies provide the first direct evidence that normal long-term human marrow cultures support the continued turnover of a variety of early hematopoietic progenitor cell types. Further, they indicate that the proliferative activity of the most primitive of these progenitors is regulated by stage-specific cell-cell interactions that are subject to manipulation

  17. Analysis of immunoglobulin transcripts in the ostrich Struthio camelus, a primitive avian species.

    Directory of Open Access Journals (Sweden)

    Tian Huang

    Full Text Available Previous studies on the immunoglobulin (Ig genes in avian species are limited (mainly to galliformes and anseriformes but have revealed several interesting features, including the absence of the IgD and Igκ encoding genes, inversion of the IgA encoding gene and the use of gene conversion as the primary mechanism to generate an antibody repertoire. To better understand the Ig genes and their evolutionary development in birds, we analyzed the Ig genes in the ostrich (Struthio camelus, which is one of the most primitive birds. Similar to the chicken and duck, the ostrich expressed only three IgH chain isotypes (IgM, IgA and IgY and λ light chains. The IgM and IgY constant domains are similar to their counterparts described in other vertebrates. Although conventional IgM, IgA and IgY cDNAs were identified in the ostrich, we also detected a transcript encoding a short membrane-bound form of IgA (lacking the last two C(H exons that was undetectable at the protein level. No IgD or κ encoding genes were identified. The presence of a single leader peptide in the expressed heavy chain and light chain V regions indicates that gene conversion also plays a major role in the generation of antibody diversity in the ostrich. Because the ostrich is one of the most primitive living aves, this study suggests that the distinct features of the bird Ig genes appeared very early during the divergence of the avian species and are thus shared by most, if not all, avian species.

  18. The ECM moves during primitive streak formation--computation of ECM versus cellular motion.

    Directory of Open Access Journals (Sweden)

    Evan A Zamir

    2008-10-01

    Full Text Available Galileo described the concept of motion relativity--motion with respect to a reference frame--in 1632. He noted that a person below deck would be unable to discern whether the boat was moving. Embryologists, while recognizing that embryonic tissues undergo large-scale deformations, have failed to account for relative motion when analyzing cell motility data. A century of scientific articles has advanced the concept that embryonic cells move ("migrate" in an autonomous fashion such that, as time progresses, the cells and their progeny assemble an embryo. In sharp contrast, the motion of the surrounding extracellular matrix scaffold has been largely ignored/overlooked. We developed computational/optical methods that measure the extent embryonic cells move relative to the extracellular matrix. Our time-lapse data show that epiblastic cells largely move in concert with a sub-epiblastic extracellular matrix during stages 2 and 3 in primitive streak quail embryos. In other words, there is little cellular motion relative to the extracellular matrix scaffold--both components move together as a tissue. The extracellular matrix displacements exhibit bilateral vortical motion, convergence to the midline, and extension along the presumptive vertebral axis--all patterns previously attributed solely to cellular "migration." Our time-resolved data pose new challenges for understanding how extracellular chemical (morphogen gradients, widely hypothesized to guide cellular trajectories at early gastrulation stages, are maintained in this dynamic extracellular environment. We conclude that models describing primitive streak cellular guidance mechanisms must be able to account for sub-epiblastic extracellular matrix displacements.

  19. p120 Catenin-Mediated Stabilization of E-Cadherin Is Essential for Primitive Endoderm Specification.

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    Tim Pieters

    2016-08-01

    Full Text Available E-cadherin-mediated cell-cell adhesion is critical for naive pluripotency of cultured mouse embryonic stem cells (mESCs. E-cadherin-depleted mESC fail to downregulate their pluripotency program and are unable to initiate lineage commitment. To further explore the roles of cell adhesion molecules during mESC differentiation, we focused on p120 catenin (p120ctn. Although one key function of p120ctn is to stabilize and regulate cadherin-mediated cell-cell adhesion, it has many additional functions, including regulation of transcription and Rho GTPase activity. Here, we investigated the role of mouse p120ctn in early embryogenesis, mESC pluripotency and early fate determination. In contrast to the E-cadherin-null phenotype, p120ctn-null mESCs remained pluripotent, but their in vitro differentiation was incomplete. In particular, they failed to form cystic embryoid bodies and showed defects in primitive endoderm formation. To pinpoint the underlying mechanism, we undertook a structure-function approach. Rescue of p120ctn-null mESCs with different p120ctn wild-type and mutant expression constructs revealed that the long N-terminal domain of p120ctn and its regulatory domain for RhoA were dispensable, whereas its armadillo domain and interaction with E-cadherin were crucial for primitive endoderm formation. We conclude that p120ctn is not only an adaptor and regulator of E-cadherin, but is also indispensable for proper lineage commitment.

  20. Octopus arm movements under constrained conditions: adaptation, modification and plasticity of motor primitives.

    Science.gov (United States)

    Richter, Jonas N; Hochner, Binyamin; Kuba, Michael J

    2015-04-01

    The motor control of the eight highly flexible arms of the common octopus (Octopus vulgaris) has been the focus of several recent studies. Our study is the first to manage to introduce a physical constraint to an octopus arm and investigate the adaptability of stereotypical bend propagation in reaching movements and the pseudo-limb articulation during fetching. Subjects (N=6) were placed inside a transparent Perspex box with a hole at the center that allowed the insertion of a single arm. Animals had to reach out through the hole toward a target, to retrieve a food reward and fetch it. All subjects successfully adjusted their movements to the constraint without an adaptation phase. During reaching tasks, the animals showed two movement strategies: stereotypical bend propagation reachings, which were established at the hole of the Perspex box and variant waving-like movements that showed no bend propagations. During fetching movements, no complete pseudo-joint fetching was observed outside the box and subjects pulled their arms through the hole in a pull-in like movement. Our findings show that there is some flexibility in the octopus motor system to adapt to a novel situation. However, at present, it seems that these changes are more an effect of random choices between different alternative motor programs, without showing clear learning effects in the choice between the alternatives. Interestingly, animals were able to adapt the fetching movements to the physical constraint, or as an alternative explanation, they could switch the motor primitive fetching to a different motor primitive 'arm pulling'. © 2015. Published by The Company of Biologists Ltd.

  1. Clinical analysis of primary primitive neuroectodermal tumors in the female genital tract.

    Science.gov (United States)

    Xiao, Changji; Zhao, Jing; Guo, Peng; Wang, Dan; Zhao, Dachun; Ren, Tong; Yang, Jiaxin; Shen, Keng; Lang, Jinghe; Xiang, Yang; Cui, Quancai

    2014-03-01

    The aim of the study was to investigate the clinical manifestations, diagnosis, treatment, and prognosis of primitive neuroectodermal tumors (PNETs) in the female genital tract. From April 2001 to May 2013, the clinicopathologic characteristics, treatments, outcomes, and prognosis of 11 patients with PNET in the female genital tract were analyzed retrospectively at our hospital. The location of PNET in the 11 patients presented here included vulva (2 patients), cervix (2 patients), uterus and its ligament (5 patients), and the ovaries (2 patients). Ages ranged from 18 to 59 years (median, 31 years).The main clinical manifestations of PNET in the female genital tract are irregular vaginal bleeding (6 patients), pelvic mass, uterine enlargement, and rapidly increasing vulvar mass (8 patients), and vulvar pain and lower abdominal pain (5 patients). The CA125 levels of 8 patients were elevated before the operations and reduced to normal when the diseases were controlled, while the levels increased as the tumor was progressive. Results for the most commonly used immunohistochemistry studies revealed CD99 in 11 of the 11 tumors, synaptophysin in 6 of the 7 positive tumors, and neuron-specific enolase in 6 of the 6 tumors. Ten patients underwent surgical resection. Nine of them underwent preoperative or/and postoperative combination chemotherapy. The follow-up of 10 patients were available and ranged from 1 to 145 months (median, 30.5 months), 3 of whom experiencing recurrence. Primitive neuroectodermal tumor is very rare and can originate from any part of the female genital tract. The tumors had different manifestations but the same pathologic features. CA125 may be an important marker for prognosis and follow-up of PNET of the female internal genital tract.

  2. Prediction of Intention during Interaction with iCub with Probabilistic Movement Primitives

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    Oriane Dermy

    2017-10-01

    Full Text Available This article describes our open-source software for predicting the intention of a user physically interacting with the humanoid robot iCub. Our goal is to allow the robot to infer the intention of the human partner during collaboration, by predicting the future intended trajectory: this capability is critical to design anticipatory behaviors that are crucial in human–robot collaborative scenarios, such as in co-manipulation, cooperative assembly, or transportation. We propose an approach to endow the iCub with basic capabilities of intention recognition, based on Probabilistic Movement Primitives (ProMPs, a versatile method for representing, generalizing, and reproducing complex motor skills. The robot learns a set of motion primitives from several demonstrations, provided by the human via physical interaction. During training, we model the collaborative scenario using human demonstrations. During the reproduction of the collaborative task, we use the acquired knowledge to recognize the intention of the human partner. Using a few early observations of the state of the robot, we can not only infer the intention of the partner but also complete the movement, even if the user breaks the physical interaction with the robot. We evaluate our approach in simulation and on the real iCub. In simulation, the iCub is driven by the user using the Geomagic Touch haptic device. In the real robot experiment, we directly interact with the iCub by grabbing and manually guiding the robot’s arm. We realize two experiments on the real robot: one with simple reaching trajectories, and one inspired by collaborative object sorting. The software implementing our approach is open source and available on the GitHub platform. In addition, we provide tutorials and videos.

  3. Iron oxide bands in the visible and near-infrared reflectance spectra of primitive asteroids

    Science.gov (United States)

    Jarvis, Kandy S.; Vilas, Faith; Gaffey, Michael J.

    1993-01-01

    High resolution reflectance spectra of primitive asteroids (C, P, and D class and associated subclasses) have commonly revealed an absorption feature centered at 0.7 microns attributed to an Fe(2+)-Fe(3+) charge transfer transition in iron oxides and/or oxidized iron in phyllosilicates. A smaller feature identified at 0.43 microns has been attributed to an Fe(3+) spin-forbidden transition in iron oxides. In the spectra of the two main-belt primitive asteroids 368 Haidea (D) and 877 Walkure (F), weak absorption features which were centered near the location of 0.60-0.65 microns and 0.80-0.90 microns prompted a search for features at these wavelengths and an attempt to identify their origin(s). The CCD reflectance spectra obtained between 1982-1992 were reviewed for similar absorption features located near these wavelengths. The spectra of asteroids in which these absorption features have been identified are shown. These spectra are plotted in order of increasing heliocentric distance. No division of the asteroids by class has been attempted here (although the absence of these features in the anhydrous S-class asteroids, many of which have presumably undergone full heating and differentiation should be noted). For this study, each spectrum was treated as a continuum with discrete absorption features superimposed on it. For each object, a linear least squares fit to the data points defined a simple linear continuum. The linear continuum was then divided into each spectrum, thus removing the sloped continuum and permitting the intercomparison of residual spectral features.

  4. Vie et mort d’un ciné-club: le ciné-club d’Ivry (1948-1983)

    OpenAIRE

    Destouches, André

    2012-01-01

    L’histoire du ciné-club d’Ivry s’inscrit pleinement dans celle du mouvement ciné-club. Né dans l’effervescence culturelle de l’après-guerre qui voit se multiplier les ciné-clubs pour un public avide de projections et de débats, il connaît un succès éclatant jusqu’au début des années 1950. Après un passage à vide, il retrouve tout son éclat dans les années de la «Nouvelle Vague» où il est l’un des plus importants ciné-clubs de France. Les difficultés apparaissent au tournant des années 1960 et...

  5. La singularité du patient tuberculeux dans le système de santé: l'expérience du Burkina Faso

    Science.gov (United States)

    Zerbo, Roger

    2013-01-01

    La démarche pluridisciplinaire s'impose de plus en plus dans le secteur de la santé dans le contexte africain, où les parcours thérapeutiques sont pluriels et les rapports des usagers des centres de santé sont complexes et peu satisfaisants. La compréhension des représentations de la maladie est nécessaire pour offrir des soins appropriés certes, mais l'expérience individuelle des malades représente également une source de savoir. Les données ont été collectées à travers des entretiens semi-directifs, le recueil des récits de vie et des observations participantes. Cet article rend compte d'une expérience d'implication de socio-anthropologue dans la mise en œuvre d'un programme de santé publique au Burkina Faso en vue d'une amélioration de la prise en charge des malades tuberculeux. L'analyse des données à été conduite dans une visée réflexive. Les perspectives socio-anthropologiques ont révélé que l'expérience des anciens malades tuberculeux peut être mise à profit afin d'apporter des changements dans les relations thérapeutiques et l'intégration sociale des autres malades. Cette idée à été mise en application pour tenir lieu d'une traduction des analyses anthropologiques en actes pour un changement. L'article évoque la manière dont l'approche socio-anthropologique au sein d'un programme de santé, peut mettre en évidence le potentiel des malades à être des acteurs importants dans le fonctionnement des services de soins et leur propre bien-être. Dans cette situation, la démarche théorique implique la réflexivité de l'anthropologue, mais également un regard critique sur les modes d'intervention en santé publique. PMID:24009798

  6. PENGELOLAAN ZAKAT OLEH NEGARA DAN SWASTA Studi Efektifitas dan Efisiensi Pengelolaan Zakat Oleh BAZ Dan LAZ Kota Madiun

    Directory of Open Access Journals (Sweden)

    Atik Abidah

    2010-12-01

    Full Text Available Abstraks: Keberadaan lembaga zakat di Indonesia yang diakui oleh perundang-undangan ada dua, yaitu Badan Amil Zakat (BAZ dan Lembaga Amil Zakat (LAZ. BAZ adalah lembaga zakat yang dikelola oleh pemerintah, sedangkan LAZ adalah lembaga yang dikelola oleh masyarakat. Artikel ini merupakan merupakan hasil penelitian lapangan dengan menggunakan pendekatan kualitatif. Data digali langsung dari BAZ Kota Madiun dan LAZ dalam hal ini ada 2 lembaga, yaitu Lembaga Manajemen Infaq (LMI dan Baitul Maal Hidayatullah (BMH. Hasil penelitian BAZ lebih efektif dibanding LAZ, karena BAZ di bawah naungan Pemerintah Kota Madiun dan didukung dengan kebijakan dalam menjalankan progam kerjanya. Sedangkan pada LAZ (LMI dan BMH karena sifatnya mandiri, maka segala sesuatunya akan efektif jika mereka bekerja keras, dan itulah yang selama ini dilakukan oleh LMI dan BMH, sehingga sampai saat ini mereka masih eksis.

  7. INTERAKSI DAN HARMONI UMAT BERAGAMA

    Directory of Open Access Journals (Sweden)

    Joko Tri Haryanto

    2012-05-01

    Masyarakat Singkawang adalah masyarakat yang terdiri atas berbagai kelompok suku bangsa dan agama. Secara historis, masyarakat Singkawang mampu mem­pertahankan harmoni antar agama. Model interaksi sosial yang bersifat asosiatif tampaknya potensial untuk mendukung harmoni di dalam masyarakat. Ber­dasarkan paradigma fungsional-struktural, masyarakat diasumsikan sebagai sistem organik yang memiliki huungan antar bagiannya untuk mempertahankan masyarakat. Interaksi sosial di dalam masyarakat Singkawang dikembangkan melalui interaksi di dalam lingkup keluarga, lingkungan sekitar, aktifitas ekonomi, para pimpinan agama, dan hubungan di dalam lingkup budaya dan tradisi. Meskipun demikian, hubungan antar unsur masyarakat masih kosmopolitan, yang di dalamnya anggota masyarakat kurang aktif dalam mengembangkan harmoni masyarakat.

  8.  “Welcome to the Post-Pill Paradise” Variations sur quelques figures d'Éros dans la fiction de John Updike (Marry Me, Couples & The Witches of Eastwick

    Directory of Open Access Journals (Sweden)

    Sylvie MATHÉ

    2003-06-01

    Full Text Available Stendhal, dans “De l’Amour” (1822 — cette physiologie qu’il considéra toute sa vie comme son œuvre principale, où il exposait cette science du bonheur pour lui si essentielle —, consacre un chapitre à l’amour aux États-Unis (chapitre 50, entre autres chapitres sur l’Italie, l’Angleterre, l’Espagne, la Provence ou encore l’Arabie. S’interrogeant sur l’amour et sur la poursuite du bonheur chère aux Américains, il écrit : On dirait que la source de la sensibilité se tarit chez ces gens-là. Ils...

  9. L’apport des sources écrites à la compréhension des logis dans les châteaux de la fin du Moyen Âge

    Directory of Open Access Journals (Sweden)

    Solveig Bourocher

    2010-02-01

    Full Text Available L’étude d’un château amène à poser des questions plus ou moins complexes : quand (datation des différentes phases ? Qui (acteurs ? Comment ? (question double : comment s’est déroulé le chantier ? comment a-t-on habité ? Pourquoi ? (question double dont un sens concret : pour quel mode de vie ? un sens conceptuel : dans quelles intentions politiques, symboliques a-t-on construit de cette manière ?. Ces questions recouvrent deux notions : la temporalité (quand et la spatialité (où. Qui, c...

  10. ETIKA BISNIS AL-GHAZALI DAN ADAM SMITH DALAM PERSPEKTIF ILMU BISNIS DAN EKONOMI

    Directory of Open Access Journals (Sweden)

    AM. M. Hafidz MS.

    2013-05-01

    Full Text Available Penelitian ini adalah untuk mengeksplorasi: (1 pembangunan etika bisnis yang telah dirumuskan oleh al-Ghazali dan Adam Smith, (2 persamaan dan perbedaan antara dua etika bisnis pria, dan (3 relevansi bisnis mereka etika bisnis modern dunia dan ekonomi. Bisnis etika dibangun oleh al-Ghazali dan Smith di dataran praksis tidak jauh berbeda. Etika bisnis konstruksi dibangun oleh al-Ghazali didasarkan pada prinsip-prinsip seperti orientasi itikad baik tentang dunia dan akhirat, kejujuran, kepentingan pribadi dan social keseimbangan, dan perilaku / perbuatan yang tepat. Di sisi lain, etika bisnis konstruksi dibangun oleh Smith, berdasarkan keadilan, altruisme, keadilan dan liberal (kebebasan ekonomi. Baik etika bisnis yang diperkenalkan oleh kedua sangat relevan untuk menjadi digunakan sebagai bahan pokok acuan dalam etika bisnis modern.

  11. Pengembangan Sistem Otomatisasi AC dan Lampu Menggunakan Fuzzy dan Raspberry Pi

    Directory of Open Access Journals (Sweden)

    Rudy Ariyanto

    2017-11-01

    Full Text Available Otomatisasi AC dan lampu dilakukan untuk menghemat energi yang digunakan pada kehidupan sehari-hari. Dalam pengembangan otomatisasi AC dan lampu perlu menerapkan sebuah perangkat yang memiliki fungsi maksimal dengan harga yang minimal. Raspberry Pi merupakan perangkat atau modul dengan harga rendah yang mampu melakukan komunikasi wireless tanpa bantuan modul lain. Dalam pengembangan otomatisasi AC dan lampu juga diperlukan sebuah metode yang mampu melakukan kontrol terhadap nyala AC dan lampu. Penerapan metode fuzzy dapat dilakukan untuk menghimpun informasi keadaan ruang yang didapat dari sensor untuk menentukan nyala AC dan lampu secara otomatis. Oleh sebab itu pada penelitian ini mengusulkan pengembangan otomatisasi AC dan lampu menggunakan Raspberry Pi dan Fuzzy. Otomatisasi AC dan lampu menggunakan Raspberry Pi yang menerapkan metode Fuzzy dapat menghemat energi hingga 59,87% dalam hal lama waktu nyala AC dan 57,47% untuk lumenasi lampu

  12. β-Catenin Regulates Primitive Streak Induction through Collaborative Interactions with SMAD2/SMAD3 and OCT4

    DEFF Research Database (Denmark)

    Funa, Nina Sofi Ayumi; Schachter, Karen; Lerdrup, Mads

    2015-01-01

    Canonical Wnt and Nodal signaling are both required for induction of the primitive streak (PS), which guides organization of the early embryo. The Wnt effector b-catenin is thought to function in these early lineage specification decisions via transcriptional activation of Nodal signaling. Here, we...... specification. This study provides mechanistic insight into how Wnt signaling controls early cell lineage decisions....

  13. Development of a reliable method for determining sex for a primitive rodent, the Point Arena mountain beaver (Aplodontia rufa nigra)

    Science.gov (United States)

    Kristine L. Pilgrim; William J. Zielinski; Fredrick V. Schlexer; Michael K. Schwartz

    2012-01-01

    The mountain beaver (Aplodontia rufa) is a primitive species of rodent, often considered a living fossil. The Point Arena mountain beaver (Aplodontia rufa nigra) is an endangered subspecies that occurs in a very restricted range in northern California. Efforts to recover this taxon have been limited by the lack of knowledge on their demography, particularly sex and age...

  14. A novel splice mutation in the TP53 gene associated with Leydig cell tumor and primitive neuroectodermal tumor

    DEFF Research Database (Denmark)

    Stecher, Chalotte Willemann; Grønbaek, Kirsten; Hasle, Henrik

    2008-01-01

    A 20-month-old boy presented with precocious puberty due to a Leydig cell tumor, and at the age of 6 years with a primitive neuroectodermal brain-tumor (PNET). A novel splice site mutation of the TP53-gene, likely to be associated with a nonfunctional protein, was found in the proband, his father...

  15. High resolution array-based comparative genomic hybridisation of medulloblastomas and supra-tentorial primitive neuroectodermal tumours

    Science.gov (United States)

    McCabe, Martin Gerard; Ichimura, Koichi; Liu, Lu; Plant, Karen; Bäcklund, L Magnus; Pearson, Danita M; Collins, Vincent Peter

    2010-01-01

    Medulloblastomas and supratentorial primitive neuroectodermal tumours are aggressive childhood tumours. We report our findings using array comparative genomic hybridisation (CGH) on a whole-genome BAC/PAC/cosmid array with a median clone separation of 0.97Mb to study 34 medulloblastomas and 7 supratentorial primitive neuroectodermal tumours. Array CGH allowed identification and mapping of numerous novel small regions of copy number change to genomic sequence, in addition to the large regions already known from previous studies. Novel amplifications were identified, some encompassing oncogenes, MYCL1, PDGFRA, KIT and MYB, not previously reported to show amplification in these tumours. In addition, one supratentorial primitive neuroectodermal tumour had lost both copies of the tumour suppressor genes CDKN2A & CDKN2B. Ten medulloblastomas had findings suggestive of isochromosome 17q. In contrast to previous reports using conventional CGH, array CGH identified three distinct breakpoints in these cases: Ch 17: 17940393-19251679 (17p11.2, n=6), Ch 17: 20111990-23308272 (17p11.2-17q11.2, n=4) and Ch 17: 38425359-39091575 (17q21.31, n=1). Significant differences were found in the patterns of copy number change between medulloblastomas and supratentorial primitive neuroectodermal tumours, providing further evidence that these tumours are genetically distinct despite their morphological and behavioural similarities. PMID:16783165

  16. Sistem Informasi Penjualan dan Pemesanan Layanan Berbasis Web dan SMS Gateway di Petshop "PetZone"

    Directory of Open Access Journals (Sweden)

    Siska Fadhilah Wati

    2013-09-01

    Full Text Available Dewasa ini teknologi informasi sangat membantu dalam dunia bisnis. Kemudahan yang ditawarkan akan menjaring lebih banyak konsumen. Namun, perusahan tingkat menengah seperti PetZone saat ini masih jarang yang menawarkan kemudahan berbelanja atau pemesanan layanan secara online. Oleh karena itu diperlukan sebuah sistem berbasis web di perusahaan PetZone yang dapat memudahkan pemilik dan karyawan dalam apenjualan, pelayanan, dan pemasaran, serta memudahkan pelanggan dalam jual-beli barang dan jasa. Atas dasar masalah tersebut dibangun Sistem Informasi Penjualan dan Pemesanan Layanan Berbasis Web dan SMS Gateway untuk menunjang proses bisnis yang ada. Sistem informasi dibangun menggunakan bahasa pemrograman PHP framework Codeigniter, javascript untuk tampilan yang dinamis, dan database MySQL. Proses pembuatan dan pengembangan Sistem Informasi Penjualan ini menggunakan metode air terjun. Metode air terjun meliputi kebutuhan pengguna, analisis, rancangan, implementasi dan pengujian. Pemodelan Sistem Informasi yang dibangun menggunakan metode berorientasi objek UML (Unified Modeling Language yang terdiri dari Use case  diagram, Class diagram dan Sequence diagram. Hasil pengujian Sistem Informasi Penjualan dan Pemesanan Layanan Berbasis Web dan SMS Gateway menunjukkan bahwa semua fitur yang terdapat baik dalam sistem informasi maupun SMS gateway dapat bekerja dengan baikdengan ratusan sample data, dan server SMS gateway dapat memproses lebih dari satu SMS secara bersamaan. Dalam perkembangan ke depannya nanti, Sistem Informasi Penjualan dan Pemesanan Layanan Berbasis Web dan SMS Gateway masih dapat dikembangkan lagi dengan menambah fitur-fitur pada SMS gateway sehingga lebih memudahkan konsumen.

  17. Spectrum Analysis of Inertial and Subinertial Motions Based on Analyzed Winds and Wind-Driven Currents from a Primitive Equation General Ocean Circulation Model.

    Science.gov (United States)

    1982-12-01

    1Muter.Te Motions Based on Ana lyzed Winds and wind-driven December 1982 Currents from. a Primitive Squat ion General a.OW -love"*..* Oean Circulation...mew se"$ (comeS.... do oISN..u am ae~ 00do OWaor NUN Fourier and Rotary Spc , Analysis Modeled Inertial and Subinrtial Motion 4 Primitive Equation

  18. Radiotherapy in stereotactic conditions with CyberKnife of primitive or secondary hepatic lesions: lessons learnt by the Alexis-Vautrin Centre

    International Nuclear Information System (INIS)

    Taste-George, H.; Peiffert, D.

    2010-01-01

    The author report the experience gained on patients treated by irradiation in stereotactic conditions for primitive or secondary hepatic lesions. Thirty three patients have been treated, 22 suffering from secondary lesions and 11 from primitive lesions. The treatment technique is not much constraining for the patient, is not much toxic, and provides a high local tumour control. Short communication

  19. Analyse de Cycle de Vie appliquée à un chantier d'entretien routier sur la RN 76. Evaluation technique et environnementale d'une couche de liaison d'enrobé bitumineux pour différents taux de recyclage. Inventaire de Cycle de Vie de la couche de liaison

    OpenAIRE

    Jullien , Agnès; Moneron , Pierre; Ventura , Anne; Legret , Michel; Demare , Dominique; De La Roche , Chantal; Schemid , Michel; Lachet , Céline; Gaillard , David; Oudin , Jack; Jacques , Jean-Pierre; Odie , Lionel; Meriel , Bernard; Boittin , Régis; Cabannes , Hervé

    2006-01-01

    Le concept de développement durable amène à favoriser les pratiques de recyclage des déchets issus de la route. Cependant, la généralisation de ces pratiques amène des interrogations en matière de protection de l'environnement, nécessitant de conduire des évaluations techniques et environnementales couplées. La méthodologie normalisée d'analyse de cycle de vie (ACV) est adaptée à cette double approche. Une expérimentation a été réalisée en septembre 2001 sur la chaussée de la RN 76, en appliq...

  20. Efikasi Kendiri: Perbandingan Antara Islam dan Barat

    Directory of Open Access Journals (Sweden)

    Noornajihan, J.

    2014-12-01

    Full Text Available Terminologi efikasi kendiri (EK merupakan terminologi yang diperkenalkan dalam ilmu psikologi sekitar tahun 70-an. Namun, istilah ini masih kurang difahami oleh kebanyakan individu terutama mereka yang bukan berlatar belakangkan bidang psikologi. Oleh itu, satu keperluan hasil penulisan ini diketengahkan, memandangkan konsep ini penting dalam diri setiap individu bagi memacu kecemerlangan diri. Justeru, kertas kerja ini akan mengupas serba ringkas mengenai konsep EK dari perspektif Islam dan Barat, dengan melihat kepada beberapa titik persamaan dan perbezaan antara kedua-dua pandangan. Islam dan Barat bersetuju bahawa individu yang memiliki EK yang tinggi merupakan individu yang berfikiran positif, berani mengambil risiko dan tidak mudah berputus. Namun pandangan Islam terhadap konsep ini lebih luas, kerana Islam mengaitkan konsep ini dengan konsep tauhid uluhiyyah dan konsep manusia sebagai ahsan al-taqwim. Oleh demikian, EK dari perspektif Islam lebih bersifat kekal dan umum, di samping individu yang berefikasi tinggi menurut Islam ialah individu yang memiliki sifat sabar, syukur, redha dan redha.