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Search Results: 1 - 10 of 1160 matches for " Fabrice Not "
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Is Fish Domestication Going Too Fast?  [PDF]
Fabrice Teletchea
Natural Resources (NR) , 2016, DOI: 10.4236/nr.2016.76034
Abstract: Domestication is a very strong process that has enabled humans to produce both plants and animals with desired traits. For land animals, this process started about 12,000 years ago and resulted in that today hundreds of well-defined breeds are available for the five most important farmed mammal species (cattle, pig, horse, sheep and goat). For aquatic animals, this process started much earlier, and the bulk of domestication of new species dated back only to the early 1980s. Nevertheless, there are now numerous fish species for which the life cycle is already closed in captivity and some domesticated fish have been genetically improved. This implies that what probably took hundreds of years in mammals (i.e., to control the life cycle in captivity and then to improve captive individuals) has been accomplished in only tens of years for some fish species. Based on the main problems observed today in farmed mammals, the possible consequences of this fast domestication of fish are discussed.
Adaptive Performance Improvement of Fiber Bragg Grating in Radio over Fiber System  [PDF]
Fabrice Mfuamba Kabonzo, Yunfeng Peng
Journal of Computer and Communications (JCC) , 2016, DOI: 10.4236/jcc.2016.43001
Abstract:

The combination of Radio Frequency and Optical Fiber has resulted high capacity transmission at lower costs components and makes Radio over Fiber as a current trend of large broadband communication. In Fiber optics field, the use of Fiber Bragg Grating (FBG) was been proposed in recent research with different purpose of uses. However, the compensation of dispersion method of Fiber Bragg Grating (FBG) can boost significantly the system performance. This paper investigates the performance capacity improvement of adaptive Radio over Fiber system. The system design was performed using OptiSystem 7.0 software, which 10 Gb/s Non Return to Zero (NRZ) signal was launched into 50 Km Universal Mode Fiber and Fiber Bragg Grating was used as a compensator of dispersion before frequency up conversion. Therefore, the system performances were investigated by comparing the Bit Error Rate (BER) and Q-factors of Positive Intrinsic Negative (PIN) and Ultrafast Avalanche Photodiode (APD) as optical receivers. The Eye diagram analyzer showed acceptable improvement due to use of Fiber Bragg Grating as a compensator of dispersion.

Hammerhead Ribozymes: True Metal or Nucleobase Catalysis? Where Is the Catalytic Power from?
Fabrice Leclerc
Molecules , 2010, DOI: 10.3390/molecules15085389
Abstract: The hammerhead ribozyme was first considered as a metalloenzyme despite persistent inconsistencies between structural and functional data. In the last decade, metal ions were confirmed as catalysts in self-splicing ribozymes but displaced by nucleobases in self-cleaving ribozymes. However, a model of catalysis just relying on nucleobases as catalysts does not fully fit some recent data. Gathering and comparing data on metal ions in self-cleaving and self-splicing ribozymes, the roles of divalent metal ions and nucleobases are revisited. Hypothetical models based on cooperation between metal ions and nucleobases are proposed for the catalysis and evolution of this prototype in RNA catalysis.
Versión real y versión monetaria de una economía de mercado artesanal
Fabrice,Tricou;
Lecturas de Economía , 2008,
Abstract: the handcraft market represents the social division of work because it is referred to the exchange between separated producers; unlike pure exchange and capitalist economies, the handcraft economy integrates production but gets rid off the technical division of work. this paper displays both real and monetary models of the handcraft market where each consumer-producer generalist, maximizes his utility function. in the first model a "general market economy" arises, which is related to relative equilibrium prices, whereas in the second one, the monetary model, a "particular market economy" arises, which is linked to absolute disequilibrium prices.
Los juegos antropologicos de Saint-Louis
Delsahut, Fabrice;
Revista Brasileira de Ciências do Esporte , 2011, DOI: 10.1590/S0101-32892011000400002
Abstract: in1904, in the louisiana purchase exposition, the olympic games couldn't escape the rise in the racist ideologies of the 20th century and they contributed to the discussing of the athletic merit of the different races. their organizers set up special competitions, called for the occasion ? anthropology days ?, reserved for those who were considered as primitives by the segregationist america of that time. the impact of the race studies on the ways of thinking sport, contrary to what the different chairmen of the ioc tried hard to make believe during the new decades, was not only an unfortunate moment in the history of the olympic movement. we shall make some forecasts regarding the influence of that interracial athletic show in the united states but also in the world, in particular through the role of the press. the anthropology days surely allowed a certain perception of otherness and limited the integration of native peoples in the world sports fabric.
Alzheimer’s disease: psychiatric or neurological disorder?
Fabrice Gzil
Poiesis & Praxis , 2009, DOI: 10.1007/s10202-008-0061-3
Abstract: Le but de cette contribution est d’apporter quelques éclairages historiques et conceptuels sur la question de l’impact des développements récents en neurosciences sur le concept de maladie psychiatrique. Pour réfléchir à cette question, la maladie d’Alzheimer est un exemple intéressant pour deux raisons. Premièrement, la maladie d’Alzheimer a un statut assez ambigu au sein des affections qui touchent le psychisme: le fait que l’on dise généralement qu’il s’agit d’une maladie “neuropsychiatrique” illustre la difficulté qu’il y a à la ranger au sein des affections “neurologiques” ou au sein des affections “psychiatriques”. Deuxièmement, la notion de maladie d’Alzheimer a été inventée au début du 20e siècle, au moment où les neurosciences commen aient à prendre leur essor: en comparant les conceptions d’Alzheimer et les conceptions actuelles, on peut espérer cerner d’un peu plus près ce qui constitue la spécificité des neurosciences contemporaines.
Wire Troubleshooting and Diagnosis: Review and Perspectives
Fabrice Auzanneau
PIER B , 2013, DOI: 10.2528/PIERB13020115
Abstract: Electrical cables of all types are subject to aggressive environments that can create defects or accelerate aging. Many application domains require diagnosis methods and tools. Among many methods, reflectometry has proven to be the best candidate and can be easily applied to the detection and localization of hard defects, while only requiring one access point to the wire. But soft defects are more difficult to track and require new powerful methods. This paper presents a review of the recent state of the art in the field of wired network diagnosis and shows the evolution of future activities in this domain. It provides new perspectives and new research domains are proposed.
Parcours linguistiques en autonomie : Exemple de l’université de Galatasaray
Fabrice Barthelemy
Synergies Turquie , 2008,
Abstract: Pour faire face aux demandes de formations linguistiques de plus en plus spécifiques, les centres d’autoapprentissage, dans lesquels les médias de communication actuels occupent une place prépondérante, se développent légitimement, en dehors ou au sein même des structures d’enseignement traditionnelles. Ce faisant, les fonctions des enseignants évoluent, comme leurs compétences. L’université de Galatasaray s’est lancée dans ce défi, dés 2002, et l’on peut, aujourd’hui, en dresser un bilan positif
Guerre et genre
Fabrice Virgili
Genre & Histoire , 2010,
Abstract: Ce mémoire d’habilitation à diriger des recherches comprend, sous le titre Guerre et genre , trois volumes. Le rapport de synthèse (volume 3) retrace le parcours personnel et intellectuel de l’auteur autour de trois axes : Identités de genre et guerre, violence en temps de guerre, historiographie du genre. Le recueil (volume 2) comprend dix articles significatifs de ces thématiques. Enfin, le mémoire inédit (volume 1) porte sur les enfants nés de couple franco allemands pendant la Seconde ...
Versión real y versión monetaria de una economía de mercado artesanal
Fabrice Tricou
Lecturas de Economía , 2008,
Abstract: La economía artesanal representa específicamente la división social del trabajo porque trata de una economía de intercambio entre productores independientes; ella integra la producción (a diferencia de la economía de intercambio puro) pero descarta la división técnica del trabajo (a diferencia de la economía capitalista). Este texto presenta un modelo real y un modelo monetario de una economía artesanal en la cual cada productor especialista-consumidor generalista, pretende maximizar su utilidad. Mientras que en el primer modelo se dibuja una "economía del mercado general" asociada a los precios relativos de equilibrio, el segundo modelo monetario resume una "economía de los mercados particulares" conectada a precios absolutos de desequilibrio
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