639 research outputs found
Alignan-du-Vent – Le Valat
No full textDate de l'opération : 1998 (SU) Inventeur(s) : Mauné Stéphane Le site du Valat a été signalé à Jean-Luc Espérou et son équipe (MJC de Servian) par Marcel Favier en 1990, à l'occasion d'une enquête effectuée dans le cadre de l'inventaire archéologique de la commune d'Alignan-du-Vent. La tradition orale du village désigne la parcelle sur laquelle se trouve ce gisement sous le terme de « la jarre » ; nom qui renverrait à des découvertes déjà anciennes (XIXe s., si l'on en croit la tradition loca..
Etude du contexte institutionnel de la gestion du site de Merja Zerga au Maroc
No full textDiffusion du document : Station Biologique de la Tour du Valat Le Sambuc 13200 Arles (FRA)Il s'agit d'une part de décrire le contexte institutionnel dans lequel viendraient s'insérer des processus de négociation/concertation ; et d'autre part de cibler les contraintes et les conditions à la mise en place de telles procédures. La méthodologie de diagnostic socio-économique utilisée est basée sur celle proposée dans le guide GIZC de l'Unesco
Shorebirds and large waterbirds conservation. Proceedings of two workshops held at St Aidan's College, Durham, United Kingdom, September 17-18 1983
No full textLarge-scale DAQ tests for the LHCb upgrade
No full textThe Data Acquisition (DAQ) of the LHCb experiment[1] will be upgraded in 2020 to a high-bandwidth trigger-less readout system. In the new DAQ event fragments will be forwarded to the to the Event Builder (EB) computing farm at 40 MHz. Therefore the front-end boards will be connected directly to the EB farm through optical links and PCI Express based interface cards. The EB is requested to provide a total network capacity of 32Tb/s, exploiting about 500 nodes. In order to get the required network capacity we are testing various technology and network protocols on large scale clusters. We developed on this purpose an Event Builder implementation designed for an InfiniBand interconnect infrastructure. We present the results of the measurements performed to evaluate throughput and scalability measurements on HPC scale facilities
Vapaamuurareiden salat väitöskirjassa
No full textArvosteltu teos: Reijo Ahtikari: Salat ja valat: Vapaamuurarit suomalaisessa yhteiskunnassa ja julkisuudessa 1756-1996. SKS 2000 Helsinki. 389 s., kuv
The LHCb DAQ Upgrade for LHC Run3
No full textIn order to optimize the physics reach in the large hadron collider (LHC) Run3, foreseen in the years 2021 and beyond, the LHC beauty experiment collaboration has decided to re-design its detector and the data acquisition system (DAQ). The new detector will operate at the LHC bunch-crossing frequency of 40 MHz without hardware trigger. The implementation of the DAQ and the online event filter farm (EFF) for the software trigger is challenging because of the expected data rate of about 40 Tb/s. At this scale, the DAQ and the EFF can be built at an affordable cost only by using off-the-shelf hardware as much as possible. In order to optimally exploit the fast evolution of technology, we need to choose the system architecture at the last moment. Therefore, it should not have strong dependences on specific technologies. We present here the system architecture, the different implementation options that we are studying along with measurements from these studies, and will explain the decision criteria and technology drivers for choosing the components for the final system
Flit-Level InfiniBand Network Simulations of the DAQ System of the LHCb Experiment for Run-3
No full textThe Large Hadron Collider beauty (LHCb) experiment is designed to study the differences between particles and antiparticles as well as very rare decays in the charm and beauty sector at the (LHC). The detector will be upgraded in 2019, and a new trigger-less readout system will be implemented in order to significantly increase its efficiency and fully take advantage of the provided machine luminosity at the LHCb collision point. In the upgraded system, both event building and event filtering will be performed in software for all the data produced in every bunch-crossing of the LHC. In order to transport the full data rate of 32 Tb/s, we will use custom field-programmable gate array (FPGA) readout boards (PCIe40) and the state-of-the-art off-the-shelf network technologies. The full-event-building system will require around 500 servers interconnected together. From a networking point of view, event building traffic has an all-to-all pattern, requiring careful design of the network architecture to avoid congestion at the data rates foreseen. In order to maximize link utilization, different techniques can be adopted in various areas like traffic shaping, network topology, and routing optimization. The size of the system makes it very difficult to test at production scale, before the actual procurement. We resort, therefore, to network simulations as a powerful tool for finding the optimal configuration. We will present an accurate low-level description of an InfiniBand-based network with event building like traffic. We will show a comparison between simulated and reduced scale systems and how changes in the input parameters affect the performance
Salida de campo a La Tour du Valat y La Capeliére (La Camarga, Francia) el 21 de mayo de 1954
No full textSalida de campo a La Tour du Valat y La Capeliére (La Camarga, Francia) el 21 de mayo de 1954, de la que se anotaron observaciones sobre ranas, los siguientes peces: Anguilla anguilla (Anguila), "Carp. sol", Cyprinus carpio (Carpa) y Gambusia holbrooki (Gambusia), el reptil Natrix natrix (Culebra de collar, llamada Tropidonotus natrix por el autor), los siguientes mamíferos: Mus spicilegus (Ratón), Mustela nivalis (Comadreja) y Rattus norvegicus (Rata parda, llamada E.norvegicus por el autor), y las siguientes aves: Acrocephalus arundinaceus (Carricero tordal), Acrocephalus scirpaceus (Carricero común), Alauda arvensis (Alondra común), Anas platyrhynchos (Ánade azulón, también llamado Pato bravío por el autor), Anas strepera (Ánade friso), Apus sp. (Vencejo), Ardea purpurea (Garza imperial), Botaurus stellaris (Avetoro común), Burhinus oedicnemus (Alcaraván común), Carduelis sp. (seguramente, el Jilguero, C.carduelis), Chlidonias hybrida (Fumarel cariblanco), Circus aeruginosus (Aguilucho lagunero occidental), Corvus monedula (Grajilla, llamada Coloeus por el autor), Cuculus canorus (Cuco común), Delichon urbica (Avión común, llamado Chelidon urbica por el autor), Egretta garzetta (Garceta común), Emberiza schoeniclus (Escribano palustre), Falco biarmicus (Halcón Borni), Falco peregrinus (Halcón peregrino, también llamado Alcotán palomero), Falco tinnunculus (Cernícalo vulgar), Fulica sp. (Focha), Galerida cristata (Cogujada común), Glareola pratincola (Canastera común), Himantopus himantopus (Cigüeñuela común), Hirundo sp. (Golondrina), Ixobrychus minutus (Avetorillo común), Lanius senator (Alcaudón común), Larus argentatus (Gaviota argéntea), Larus ridibundus (Gaviota reidora), Locustella luscinioides (Buscarla unicolor), Luscinia megarhynchos (Ruiseñor común), Luscinia sp. (Ruiseñor o Pechiazul), "Lusciniola", Merops apiaster (Abejaruco europeo), Miliaria calandra (Triguero, llamada Emberiza calandra por el autor), Motacilla flava (Lavandera boyera), Netta rufina (Pato colorado), Nycticorax nycticorax (Martinete común), Oenanthe oenanthe (Collalba gris), Parus major (Carbonero común, también conocido como Chapin), Passer domesticus (Gorrión domestico), Perdiz (Alectoris sp. o Perdix sp.), Phoenicurus ochruros (Colirrojo tizón), Phylloscopus bonelli (Mosquitero papialbo), Pica pica (Urraca, llamada "marica" y "picarza" por el autor), Picus viridis (Pito real), Porzana parva (Polluela bastarda), Rallus aquaticus (Rascón europeo), Riparia riparia (Avión zapador), Saxicola rubetra (Tarabilla norteña), Sterna sp. (Charrán), Sternula sp., Streptopelia sp. (Tórtola), Sylvia atricapilla (Curruca capirotada), Sylvia communis (Curruca zarcera), Sylvia conspicillata (Curruca tomillera), Upupa epops (Abubilla, también llamada Bubillo por el autor) y Vanellus vanellus (Avefría europea). Incluye un taxiado de aves y datos de contenidos estomacales.Field trip to La Tour du Valat and La Capeliére (The Camargue, France) the 21st of May of 1954, of which there were noted observations about frogs, the following fishes: Anguilla anguilla (European Eel), "Carp. sol", Cyprinus carpio (Common Carp) and Gambusia holbrooki (Eastern Mosquitofish), the reptil Natrix natrix (Grass Snake, refered as Tropidonotus natrix by the author), the following mammals: Mus spicilegus (Mound-Building Mouse), Mustela nivalis (Least Weasel) and Rattus norvegicus (Brown Rat, refered as E.norvegicus by the author), and the following birds: Acrocephalus arundinaceus (Great Reed-warbler), Acrocephalus scirpaceus (Reed Warbler), Alauda arvensis (Eurasian Skylark), Anas platyrhynchos (Mallard), Anas strepera (Gadwall), Apus sp. (Swift), Ardea purpurea (Purple Heron), Botaurus stellaris (Great Bittern), Burhinus oedicnemus (Eurasian Thick-Knee), Carduelis cannabina (Pardillo común, llamada Colorín y Acanthis cannabina por el autor), Carduelis sp. (probably, the European Goldfinch, C.carduelis), Chlidonias hybrida (Whiskered Tern), Circus aeruginosus (Western Marsh-Harrier), Corvus monedula (Eurasian Jackdaw, refered as Coloeus by the author), Cuculus canorus (Common Cuckoo), Delichon urbica (House Martin, refered as Chelidon urbica by the author), Egretta garzetta (Little Egret), Emberiza schoeniclus (Reed Bunting), Falco biarmicus (Lanner Falcon), Falco peregrinus (Peregrine Falcon), Falco tinnunculus (Common Kestrel), Fulica sp. (Coot), Galerida cristata (Crested Lark), Glareola pratincola (Collared Pratincole), Himantopus himantopus (Black-winged Stilt), Hirundo sp. (Swallow), Ixobrychus minutus (Little Bittern), Lanius senator (Woodchat Shrike), Larus argentatus (Herring Gull), Larus ridibundus (Common Black-headed Gull), Locustella luscinioides (Savi´s Warbler), Luscinia megarhynchos (Common Nightingale) Luscinia sp. (Nightingale or Bluethroat), "Lusciniola", Merops apiaster (European Bee-eater), Miliaria calandra (Corn Bunting, refered as Emberiza calandra by the author), Motacilla flava (Yellow Wagtail), Netta rufina (Red-crested Pochard), Nycticorax nycticorax (Black-crowned Night Heron), Oenanthe oenanthe (Northern Wheatear), Partridge (Alectoris sp. or Perdix sp.), Parus major (Great Tit), Passer domesticus (House Sparrow), Phoenicurus ochruros (Black Redstart), Phylloscopus collybita (Common Chiffchaff), Pica pica (Black-billed Magpie), Picus viridis (Eurasian Green Woodpecker), Porzana parva (Little Crake), Rallus aquaticus (Water Rail), Riparia riparia (Sand Martin), Saxicola rubetra (Whinchat), Sterna sp. (Tern), Sternula sp., Streptopelia sp. (Turtle-dove), Sylvia atricapilla (Blackcap), Sylvia communis (Common Whitethroat), Sylvia conspicillata (Spectacled Warbler), Upupa epops (Eurasian Hoopoe) and Vanellus vanellus (Northern Lapwing). A birds census and data from stomach contents are included
High throughput data acquisition with InfiniBand on x86 low-power architectures for the LHCb upgrade
No full textThe LHCb Collaboration is preparing a major upgrade of the detector and the Data Acquisition (DAQ) to be installed during the LHC-LS2. The new Event Builder computing farm for the DAQ requires about 500 nodes, and have to be capable of transporting order of 32 Tbps. The requested performance can possibly be achieved using high-bandwidth data-centre switches and commodity hardware. Several studies are ongoing to evaluate and compare network and hardware technologies, with the aim of optimising the performance and also the purchase and maintenance costs of the system. We are investigating if x86 low-power architectures can achieve equivalent performance as traditional servers when used for multi gigabit DAQ. In this talk we introduce an Event Builder implementation based on InfiniBand network and show preliminary tests with this network technology on x86 low-power architectures, such as Intel Atom C2750 and Intel Xeon D-1540, comparing measured bandwidth and power consumption
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