Search results for "MAC"

showing 10 items of 24950 documents

Characterization of the porous structure of Chilean volcanic soils by nitrogen adsorption and mercury porosimetry

2004

Pore volume, specific surface area (SSA), and total intragranular porosity (TIP) of Chilean soils derived from volcanic materials were studied. Soil samples involving the 0-15 and 15-30 cm depth of virgin and cultivated Collipulli (Ultisol) and Diguillin (Andisol) soils at two particle size fractions (<1 mm and <2 µm) were considered. From mercury porosimetry and N2 adsorption, mainly mesopores (pore diameter, dpore, about 10 nm) were determined for <1 mm Collipulli samples. Diguillin <1 mm soil shows macroporosity with dpore from 70 nm to 7000 nm. The clay fraction of Collipulli has macropores (dpore from 2000 nm to 40000 nm) and mesopores (dpore from 3 nm to 23 nm), while for Diguillin cl…

021110 strategic defence & security studiesMaterials scienceMacropore0211 other engineering and technologiesAnalytical chemistryMineralogy02 engineering and technologyGeneral ChemistryPorosimetry15. Life on land021001 nanoscience & nanotechnologyAndisol[SPI]Engineering Sciences [physics]AdsorptionSpecific surface areaKaolinite0210 nano-technologyAllophanePorosityComputingMilieux_MISCELLANEOUS
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On Detection of Network-Based Co-residence Verification Attacks in SDN-Driven Clouds

2017

Modern cloud environments allow users to consume computational and storage resources in the form of virtual machines. Even though machines running on the same cloud server are logically isolated from each other, a malicious customer can create various side channels to obtain sensitive information from co-located machines. In this study, we concentrate on timely detection of intentional co-residence attempts in cloud environments that utilize software-defined networking. SDN enables global visibility of the network state which allows the cloud provider to monitor and extract necessary information from each flow in every virtual network in online mode. We analyze the extracted statistics on d…

021110 strategic defence & security studiesbusiness.industryComputer scienceVisibility (geometry)0211 other engineering and technologiesBotnetCloud computingcloud environments02 engineering and technologycomputer.software_genrepilvipalvelutInformation sensitivityMode (computer interface)Virtual machine0202 electrical engineering electronic engineering information engineering020201 artificial intelligence & image processingState (computer science)co-residence detectiontietoturvavirtual networksbusinessVirtual networkcomputerComputer network
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Kick Detection and Influx Size Estimation during Offshore Drilling Operations using Deep Learning

2019

An uncontrolled or unobserved influx or kick during drilling has the potential to induce a well blowout, one of the most harmful incidences during drilling both in regards to economic and environmental cost. Since kicks during drilling are serious risks, it is important to improve kick and loss detection performance and capabilities and to develop automatic flux detection methodology. There are clear patterns during a influx incident. However, due to complex processes and sparse instrumentation it is difficult to predict the behaviour of kicks or losses based on sensor data combined with physical models alone. Emerging technologies within Deep Learning are however quite adapt at picking up …

021110 strategic defence & security studiesgeographygeography.geographical_feature_categoryArtificial neural networkComputer sciencebusiness.industryDeep learning0211 other engineering and technologiesDrilling0102 computer and information sciences02 engineering and technology01 natural sciencesWellboreVDP::Teknologi: 500Drilling machines010201 computation theory & mathematicsInstrumentation (computer programming)Artificial intelligencebusinessOffshore drillingMarine engineeringWater well2019 14th IEEE Conference on Industrial Electronics and Applications (ICIEA)
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From “Mano Dura” to “Enfrentamiento Directo”: swings of public policies in El Salvador

2019

RESUMEN Introduccion: El presente trabajo analiza las cuatro principales politicas publicas de seguridad contra las pandillas en El Salvador: Mano Dura (2003-2004), Super Mano Dura (2004-2009), Tregua entre pandillas (2012-2014) y Enfrentamiento Directo (2014-2019). El objetivo es identificar la influencia de estas politicas sobre la violencia. Materiales y Metodos: Se trata de una investigacion cualitativa apoyada en 12 entrevistas y el relato de vida con las que se explora la responsabilidad gubernamental frente al problema de la violencia en El Salvador. El trabajo de campo se efectuo durante 7 meses, entre septiembre de 2016 y marzo de 2017. El tratamiento de la informacion se efectuo m…

021110 strategic defence & security studiesviolenciaSociology and Political SciencePublic policy05 social sciences0211 other engineering and technologiesseguridad públicaPharmaceutical Sciencepandillas02 engineering and technology0506 political scienceHM401-1281Política públicaPolitical science (General)gangsviolenceComplementary and alternative medicinepolíticas públicas050602 political science & public administrationEl SalvadorPharmacology (medical)Sociology (General)public safetyViolència políticaJA1-92
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Introducing postqualitative inquiry in sport and exercise psychology

2021

In recent years, qualitative research has gained popularity and legitimacy in sport and exercise psychology. However, this scientific discipline has not yet paid attention to postqualitative inquiry (PQI), despite the possibilities it offers for producing different knowledge and producing knowledge differently. The present article is the first attempt to rectify this lack of attention by offering a brief and partial sketch of PQI in the context of sport and exercise psychology. To start with, three of the basic propositions that enable PQI are described. These are: adopt a posthumanist view of ontology and the subject; engage with poststructuralism (necessarily) and new materialism (possibl…

03 medical and health sciences0302 clinical medicine05 social sciencesPosthumanism0501 psychology and cognitive sciences030229 sport sciencesSocial sciencePsychologyPopularity050105 experimental psychologyApplied PsychologyLegitimacyQualitative researchInternational Review of Sport and Exercise Psychology
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Essais cliniques institutionnels : quel monitoring ?

2013

Resume Objectif Les promoteurs assument la responsabilite de la qualite des essais cliniques. Ces methodes d’assurance qualite doivent etre les plus efficaces possible, et avoir un cout maitrise. Nous voulions decrire les erreurs les plus frequentes, a partir de la litterature, leur impact sur les resultats, et proposer les strategies de monitoring les plus efficientes. Resultats Les defauts rencontres concernent la conception, les procedures, la gestion des donnees et l’analyse. L’impact sur les resultats est presque toujours une surestimation de l’effet traitement. Aucune methode de monitoring n’ayant ete demontree superieure, un monitoring econome, cible sur les risques d’erreurs, avec d…

03 medical and health sciences0302 clinical medicineAssurance qualitePolitical science[SDV]Life Sciences [q-bio]Data interpretationPharmacology (medical)030212 general & internal medicine030226 pharmacology & pharmacyHumanitiesComputingMilieux_MISCELLANEOUS
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Manuel de bonnes pratiques professionnelles des centres d’investigation clinique

2012

Resume Les centres d’investigation clinique (CIC) sont des structures de recherche clinique academiques appartenant a un reseau national, coordonne par l’Institut national de la sante et de la recherche medicale (Inserm) et la Direction generale de l’offre de soins (DGOS), comportant des groupes de travail et des reseaux thematiques. Le groupe « Harmonisation des procedures des CIC » (HPCIC) a elabore un manuel de bonnes pratiques professionnelles, presente dans cet article. Le manuel a ete elabore par consensus, relu par les coordonnateurs des CIC, des experts externes, et valide par des representants des deux tutelles Inserm et DGOS. Le manuel de bonnes pratiques professionnelles des CIC …

03 medical and health sciences0302 clinical medicineClinical investigationPolitical sciencePharmacology (medical)030212 general & internal medicine030226 pharmacology & pharmacyHumanitiesTherapies
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¿La enzima? ¿El enzima? Un sustantivo de género ambiguo

2016

03 medical and health sciences0302 clinical medicineGastroenterologySurgery030226 pharmacology & pharmacyRevista Hispanoamericana de Hernia
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Triglicéridos, colesterol HDL y dislipidemia aterogénica en la guía europea para el control de las dislipidemias 2019

2020

En general, las guías de práctica clínica tanto europeas con americanas han abordado el control de la dislipidemia aterogénica de forma poco convincente e incluso superficial, en gran medida por las limitaciones terapéuticas disponibles. En consecuencia, esta dislipidemia está infradiagnosticada, infratratada e infracontrolada. Dada la reciente aparición de la guía 2019 de la European Atherosclerosis Society y de la European Society of Cardiology sobre el control de las dislipidemias, parece oportuno examinar su posicionamiento con respecto a la dislipidemia aterogénica y/o sus principales componentes, el aumento en las lipoproteínas ricas en triglicéridos y la disminución del colesterol de…

03 medical and health sciences0302 clinical medicinePharmacology (medical)030212 general & internal medicine030204 cardiovascular system & hematologyCardiology and Cardiovascular MedicineClínica e Investigación en Arteriosclerosis
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Riesgo cardiovascular residual de origen lipídico. Componentes y aspectos fisiopatológicos

2019

Resumen Es indudable la relacion del cLDL y el riesgo cardiovascular, asi como de los beneficios del tratamiento con estatinas. Una vez conseguido el objetivo de cLDL, son notables las evidencias que demuestran la persistencia de un elevado riesgo cardiovascular, concepto denominado riesgo residual. El riesgo residual de origen lipidico se fundamenta en la dislipidemia aterogenica, caracterizada por un aumento de trigliceridos y de las lipoproteinas ricas en trigliceridos, un descenso del cHDL y alteraciones cualitativas de las particulas LDL. Las medidas mas utilizadas para identificar esta dislipidemia se basan en la determinacion de colesterol total, trigliceridos, HDL, colesterol no HDL…

03 medical and health sciences0302 clinical medicinePharmacology (medical)030212 general & internal medicine030204 cardiovascular system & hematologyCardiology and Cardiovascular MedicineClínica e Investigación en Arteriosclerosis
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