970 research outputs found
Mémoires de jeunesse de Benjamin Canasson, notaire / Edgar Monteil ; ouvrage augmenté de la musique inédite de Ch.-L. Hess ; orné de cent gravures... d'après les dessin de Paul de Sémant
No full textAppartient à l’ensemble documentaire : Pam1Contient une table des matièresAvec mode text
No-Regret Slice Reservation Algorithms
No full textEmerging network slicing markets promise to boost the utilization of expensive network resources and to unleash the potential of over-the-top services. Their success, however, is conditioned on the service providers (SPs) being able to bid effectively for the virtualized resources. In this paper we consider a hybrid advance-reservation and spot slice market and study how the SPs should reserve slices in order to maximize their performance while not exceeding their budget. We consider this problem in its general form, where the SP demand and slice prices are time-varying and revealed only after the reservations are decided. We develop a learning-based framework, using the theory of online convex optimization, that allows the SP to employ a no-regret reservation policy, i.e., achieve the same performance with a hypothetical policy that has knowledge of future demand and prices. We extend our framework for the scenario the SP decides dynamically its slice orchestration, where it additionally needs to learn which resource composition is performance - maximizing; and we propose a mixed-time scale scheme that allows the SP to leverage any spot-market information revealed between its reservations. We evaluate our learning framework and its extensions using a variety of simulation scenarios and following a detailed parameter sensitivity analysis.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Embedded System
Learning-based Reservation of Virtualized Network Resources
No full textNetwork slicing markets have the potential to increase significantly the utilization of virtualized network resources and facilitate the low-cost deployment of over-the-top services. However, their success is conditioned on the service providers (SPs) being able to bid effectively for the virtualized resources. In this paper, we consider a hybrid advance-reservation and spot slice market and study how the SPs should reserve resources to maximize their services' performance while not violating a time-average budget threshold. We consider this problem in its general form where the SP demand and slice prices are time-varying and revealed only after the reservations are decided. We develop a learning-based framework, using the theory of online convex optimization, that allows the SP to employ a no-regret reservation policy, i.e., achieve the same performance with an oracle that has full access to all future demand and prices. We extend the framework to the scenario where the SP decides dynamically its slice orchestration and hence needs to learn the performance-maximizing resource composition; and we further develop a mixed-time scale scheme that allows the SP to leverage spot-market information that is revealed between successive reservations. The proposed learning framework is evaluated using representative simulation scenarios that highlight its efficacy as well as the impact of key system and algorithm parameters.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Embedded System
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River rocks and vanishing oranges
No full textRiver Rocks and Vanishing Oranges is a novel set in Southern California, an area that in the first half of the 1900\u27s was the center of the citrus industry for the U.S. The growing, picking and packing of oranges was the primary industry in what today is the Inland Empire. The orange industry flourished in Highland and Redlands until the mid-1960\u27s when the area began its transformation from rural agricultural community to an urban society. The author liked the idea of writing a contemporary story that had this history as its background. She wasn\u27t interested in writing a historical fiction about the citrus industry, but rather about the people who live in the modern end result of that time period. She wanted to show the evolution of the area and of people who lived in these towns filled with acres of orange groves
Population-genomic insights into emergence, crop-adaptation, and dissemination of Pseudomonas syringae pathogens
No full textThis is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.Many bacterial pathogens are well characterized but, in some cases, relatively little is
known about the populations from which they emerged. This limits understanding of
the molecular mechanisms underlying disease. The crop pathogen Pseudomonas
syringae sensu lato has been widely isolated from the environment, including wild
plants and components of the water cycle, and causes disease in several economically
important crops. Here, we compared genome sequences of 45 P. syringae crop
pathogen outbreak strains with 69 closely related environmental isolates. Phylogenetic
reconstruction revealed that crop pathogens emerged many times independently from
environmental populations. Unexpectedly, differences in gene content between
environmental populations and outbreak strains were minimal with most virulence
genes present in both. However, a genome-wide association study identified a small
number of genes, including the type III effector genes hopQ1 and hopD1, to be
associated with crop pathogens, but not with environmental populations, suggesting
that this small group of genes may play an important role in crop disease emergence.
Intriguingly, genome-wide analysis of homologous recombination revealed that the
locus Psyr 0346, predicted to encode a protein that confers antibiotic resistance, has
been frequently exchanged among lineages and thus may contribute to pathogen
fitness. Finally, we found that isolates from diseased crops and from components of the
water cycle, collected during the same crop disease epidemic, form a single
population. This provides the strongest evidence yet that precipitation and irrigation
water are an overlooked inoculum source for disease epidemics caused by P.
syringae.Caroline L. Monteil
received support from INRA and the European Union, in the framework of the Marie-Curie FP7
COFUND People Programme, through the award of an AgreenSkills’ fellowship (under grant
agreement n° 267196). Research in Boris A. Vinatzer’s laboratory and genome sequencing was
funded by the National Science Foundation of the USA (grants IOS-1354215 and DEB-1241068).
Funding for work in the Vinatzer laboratory was also provided in part by the Virginia Agricultural
Experiment Station and the Hatch Program of the National Institute of Food and Agriculture, U.S.
Department of Agriculture. Work carried out in the Sheppard laboratory was supported by the
Medical Research Council (MRC) grant MR/L015080/1, and the Wellcome Trust grant
088786/C/09/Z. GM was supported by a NISCHR Health Research Fellowship (HF-14-13)
Immigration Legal Services as a Structural HIV Intervention for Latinx Sexual and Gender Minorities
No full textUn atelier de potiers du Ier s. ap. J.-C. dans le quartier antique de Villa Roma à Nîmes (Gard)
No full textInternational audienceLe quartier antique de Villa Roma à Nîmes (Gard), largement fouillé en 1991-1992, a révélé plusieurs domus ainsi qu’une unité originale (zone 12), au sein de laquelle plusieurs fours de potiers se succèdent ou coexistent tout au long du Ier s. ap. J.-C. Seul un groupe de trois fours, utilisé dans les années 20-40, peut cependant être sûrement associé à une production de céramiques, au sein de laquelle deux pâtes distinctes mais à dominante calcaire ainsi que vingt types de vases ont pu être distingués. La plupart se retrouvent en contexte domestique, mais certains présentent des caractéristiques, étayées par plusieurs comparaisons, qui incitent à les associer à des utilisations en contexte cultuel. Une présentation de l’évolution générale de la parcelle urbaine, avec argumentaires chronologiques, permet d’en mesurer la singularité – la fonction résidentielle semble ici peu présente –, à la suite de quoi est proposée une description précise de l’atelier et des vases produits. Cet exemple permet enfin de dresser un bilan des connaissances sur l’artisanat de la céramique à l’échelle de la ville de Nîmes, chef-lieu de la cité des Volques arécomiques
Accelerated series for universal constants, by the W Zmethod
No full textIn this paper, the author presents a method, based on WZ theory, for finding rapidly converging series for universal constants. This method is analogous but different from Amdeberhan and Zeilberger's method
The health effects of air pollution in Delhi, India
No full textThe authors report the results of a time-series study of the impact of particulate air pollution on daily mortality in Delhi. They find: a) A positive, significant relationship between particulate pollution and daily nontraumatic deaths as well as deaths from certain causes (respiratory and cardiovascular problems) and for certain age groups. b) In general, these impacts are smaller than those estimated for other countries, where on average a 100-microgram increase in total suspended particulates (TSP) leads to a 6-percent increase in nontraumatic mortality. In Delhi, such an increase in TSP is associated with a 2.3-percent increase in deaths. c) The differences in magnitudes of the effects are most likely explained by differences in distributions of age at death and cause of death, as most deaths in Delhi occur before the age of 65 and are not attributed to causes with a strong association with air pollution. d) Although air pollution seems to have less impact on mortality counts in Delhi, the number of life-years saved per death avoided is greater in Delhi than in US cities -- because the age distribution of impacts in these two places varies. In the United States particulates have the greatest influence on daily deaths among persons 65 and older. In Delhi, they have the greatest impact in the 15-to-44 age group. That means that for each death associated with air pollution, on average more life-years would be saved in Delhi than in the United States. Large differences in the magnitude of effects do call into question the validity of the"concentration-response transfer"procedure. In that procedure, concentration-response relationships found for industrial countries are applied to cities in developing countries with little or no adjustment, to estimate the effects of pollution on daily mortality.Demographics,Public Health Promotion,Montreal Protocol,Health Monitoring&Evaluation,Air Quality&Clean Air,Health Monitoring&Evaluation,Montreal Protocol,Demographics,Environmental Economics&Policies,Health Systems Development&Reform
Sensitivity of shoulder musculoskeletal model predictions to muscle-tendon properties
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