检索结果-南通市图书馆

The value does not exist!A motivation for extremal analysis

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Probability, Uncertainty and Quantitative Risk 2022年第3期7卷 195-214页

作者： Jean-Pierre Aubin Hélène Frankowska Retired 14Rue Domat75005 ParisFrance CNRS IMJ-PRGSorbonne Université4Place Jussieu75252 ParisFrance

Standard mathematical economics studies the production,exchange,and consumption of goods“provided with units of measurement,”as in physics,in order to be enumerated,quantified,added,***,“baskets of goods,”which should describe subsets of goods,are mathematically represented as commodity vectors of a vector space,linear combination of units of goods,evaluated by prices,which are linear numerical ***,in this sense,mathematical economics is a branch of ***,economics,and many other domains of life sciences,investigate also what will be called entities,defining elements deprived of units of measure,which thus cannot be enumerated.(1)Denoting by X the set of entities x∈X deprived of units of measurement,a“basket of goods”is actually a subset K■X of the set entities,i.e.,an element of the“hyperset”P(X),the family of subsets of X,and no longer a commodity vector of the vector space of commodities;(2)Entities can be“gathered”instead of being“added”;(3)Entities can still be evaluated by a family of functions A:x 2 X 7!A(x)2 Rregarded as a“valuators,”in lieu and place of linear“prices”evaluating the units of economic goods.(4)Subsets of entities can be evaluated by an“interval of values”between two extremal ones,the minimum and the maximum,instead of the sum of values of units of goods weighted by their *** sciences dealing with intertwined relations among many combinations of entities,hypersets offer metaphors of“Lamarckian complexity”that keeps us away from binary relations,graphs of functions,and set-valued maps,to focus our attention on“multinary relations”between families of *** deprived of units of measurement,these“proletarian”entities still enjoy enough properties for this pauperization to be mathematically *** is the object of this extremal manifesto:in economics and other domains of life sciences,vector spaces should yield their imperial status of“state space”to hypersets and linear prices to hy

关键词： Valuators Extremal topologies Transfer of topologies Confined sets Extremal evolution Inert relation Viability kernel Regulator

The Norwegian CCS Research Centre(NCCS):facilitating industry-driven innovation for fast-track CCS deployment

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Clean Energy 2020年第2期4卷 158-168页

作者： Amy Brunsvold Grethe Tangen Sigmund O.Storset James Dawson Alvar Braathen Anne Steenstrup-duch Rune Aarlien Mona J.Molnvik SINTEF Energy Research Postboks 4761 Sluppen7465 TrondheimNorway SINTEF Industry Box 4760 Torgarden7465 TrondheimNorway Department of Energy and Process Engineering Norwegian University of Science and TechnologyKolbjorn v 1B7491 TrondheimNorway Department of Geosciences University of OsloPO Box 1047Blindern0316OsloNorway

Introduction Centres of Excellence are long-term collaborative research entities that create synergism between the expertise of publicly funded research actors with strong industry *** centres are focused on strategic research of high relevance for the industry,while building the funda-mental knowledge and competence to push the scientific forefront-a truly collaborative effort-critical mass of re-searchers,students and industry.

关键词： funded industry CCS

Safety and visual outcomes following posterior chamber phakic intraocular lens bilensectomy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Eye and Vision 2020年第1期7卷 328-335页

作者： Veronica Vargas Jorge L.Alió Rafael I.Barraquer Justin Christopher D’Antin Cristina García Francisco duch Joan Balgos Jorge LAliódel Barrio Vissum Instituto Oftalmológico de Alicante AlicanteSpain Division of Ophthalmology Universidad Miguel HernándezAlicanteSpain Institut Universitari Barraquer Universitat Autònoma de BarcelonaBarcelonaSpain Centro de Oftalmología Barraquer BarcelonaSpain Universitat Internacional de Catalunya BarcelonaSpain Clínica Real Vision MadridSpain Instituto Catalán de Retina(ICR)unidad de Cirugía Refractiva BarcelonaSpain

Background:To evaluate the safety,efficacy,refractive outcomes and causes for bilensectomy(phakic intraocular lens–pIOL–explantation with cataract surgery and pseudophakic intraocular lens implantation)in patients previously implanted with posterior chamber ***:This multi-center retrospective study included 87 eyes of 55 patients who underwent bilensectomy for posterior chamber pIOL with a follow up time of 12 *** uncorrected and best corrected distance visual acuities(UDVA,CDVA),endothelial cell density before and after bilensectomy were assessed,as well as the cause of bilensectomy and intra or postoperative ***:There was a statistically significant improvement in uncorrected and best corrected visual acuities after bilensectomy(p=0.00).The main reason for bilensectomy was cataract development(93.1%of the cases),followed by miscalculation of lens size,and corneal *** endothelial cell count remained stable without a statistically significant change after surgery(p=0.67).The refractive efficacy index was 0.8,none of the patients lost lines of CDVA after surgery,73%of the patients were within±1 D(spherical equivalent)of the target *** complications were one posterior capsule rupture with the intraocular lens(IOL)implanted in the sulcus,and 3 eyes required the use of pupil expanders for adequate pupil ***,one eye developed retinal *** three pIOLs models explanted were the Implantable Collamer Lens(ICL),Implantable Phakic Contact Lens(IPCL)and the Phakic Refractive Lens(PRL).Conclusions:Good safety and visual outcomes were observed 1 year after bilensectomy for posterior chamber phakic intraocular lenses(PC pIOLs).There were few intra and postoperative complications and there was no significant endothelial cell loss after the bilensectomy procedure.

关键词： Bilensectomy Posterior chamber phakic intraocular lenses Cataract Endothelial cell count Visual outcomes Postoperative complications Intraoperative complications

Elderly patients with inflammatory bowel disease: Updated review of the therapeutic landscape

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2019年第30期25卷 4158-4171页

作者： Jean-Frédéric LeBlanc Daniel Wiseman Peter L Lakatos Talat Bessissow Department of Adult Gastroenterology McGill University Health CentreMontrealQC H3G 1A4Canada Department of Medicine McGill University Health CentreMontrealQC H3G 1A4Canada 1^st Department of Medicine Semmelweis UniversityBudapest 1083Hungary

High-quality data remains scarce in terms of optimal management strategies in the elderly inflammatory bowel disease(IBD)***,available trials have been mostly retrospective,of small sample size,likely owing to underrepresentation of such a population in the major randomized controlled ***,in the last five years,there has been a steady increase in the number of published trials,helping clarify the estimated benefits and toxicity of the existing IBD *** the Everhov trial,prescription strategies were recorded over an average follow-up of 4.2 years.A minority of elderly IBD patients(1%-3%)were treated with biologics within the five years following diagnosis,whilst almost a quarter of these patients were receiving corticosteroid therapy at year five of follow-up,despite its multiple *** low use of biologic agents in real-life settings likely stems from limited data suggesting lower efficacy and higher *** minireview will aim to highlight current outcome measurements as it portends the elderly IBD patient,as well as summarize the available therapeutic strategies in view of a growing body of evidence.

关键词： Inflammatory bowel disease Elderly Outcomes Glucocorticoids Biological therapy Surgery

Spatio-Temporal evolutive Data Infrastructure: a Spatial Data Infrastructure for managing data flows of Territorial Statistical Information

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Digital Earth 2017年第3期10卷 257-283页

作者： Camille Bernard Marlène Villanova-Oliver Jérôme Gensel Benoit Le Rubrus Univ.Grenoble Alpes CNRSLIGGrenobleFrance

The observation of demographical,economical or environmental indicators over time through maps is *** enables analysing territories and helps stakeholders to take ***,the understanding of Territorial Statistical Information(TSI)is compromised unless comprehensive description of both the statistical methodology used and the spatial and temporal references are ***,in this paper,we stress the importance of metadata descriptions and of their quality that helps assessing data ***,time-series of such TSI are *** enable analysing a territory over a long period of time and likewise judging the effectiveness of *** light of these observations,we present Spatio-Temporal evolutive Data Infrastructure(STeDI)an innovative Spatial Data Infrastructure(SDI)that enriches the description of a Digital Earth,providing a virtual representation of territories and of their evolution through statistics and *** aims at managing a whole dataflow of multi-dimensional,multi-scale and multi-temporal TSI,from their acquisition to their dissemination to scientists and *** content of this SDI evolves autonomously thanks to automated processes and to a Web platform that help improving the quality of datasets uploaded by ***,STeDI allows visualizing up-to-date time-series reflecting the human activities on a given *** helps policy-makers in their decision-making process.

关键词： Spatial Data Infrastructure Territorial Statistical Information metadata data quality INSPIRE

Genetic Variation Among the Geographic Population of the Grain Aphid, Sitobion avenae (Hemiptera: Aphididae) in China Inferred from Mitochondrial COI Gene Sequence

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2011年第7期10卷 1041-1048页

作者： XU Zhao-huan CHEN Ju-lian CHENG Deng-fa LIU Yong Frédéric Francis College of Plant Protection Shandong Agricultural University Tai＇an 271018 P.R.China State Key Laboratory for Biology of Plant Disease and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences Beijing 100193 P.R.China Functional and Evolutionary Entomology Gembloux Agro-Bio Tech University of Liege Passage des Déportés 2 Gembloux B-5030 Belgium

In order to characterize the genetic relationship of the geographic populations of Sitobion avenae （Hemiptera： Aphididae） in China, a 588 bp region of the mitochondrial cytochrome oxidase subunit I （mtDNA-COI） gene was sequenced and analyzed among the different geographic populations. 269 individuals were collected from 17 localities in different wheat-growing areas in China that covered most of the range reported for this species. Within the sequence among these geographic populations, 15 polymorphic sites defined 16 distinct haplotypes, ranging in sequence divergence from 0.2% （one nucleotide） to 1.7% （10 nucleotides）. Of the 15 variable sites, 12 were transitional substitutions, 2 were transversional substitutions and 1 was transitional and transversional substitution. Phylogenetic analysis showed that all haplotypes were highly interconnected with each other, in absence of phylogeographic structing. Each of 8 haplotypes was found only at one locality, and the other haplotypes were the widespread distributed in the different localities. The higher genetic diversity was found in the northern China populations than that in the southern China populations. The low genetic differentiation （FST=-0.06945-0.69857） and high migration rate （Nm=0.21575-infinite） of Chinese populations suggest that dispersal over long distance is a major factor in the demography of S. avenae.

关键词： Sitobion avenae insect pest mitochondrial DNA mtDNA-COI gene geographic variation

High-Throughput Measurements of Stem Characteristics to Estimate Ear Density and Above-Ground Biomass

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Plant Phenomics 2019年第1期1卷 80-89页

作者： Xiuliang Jin Simon Madec Dan Dutartre Benoit de Solan Alexis Comar Frédéric Baret INRA EMMAH UMR 1114228 route de l’A′erodrome84914 AvignonFrance Institute of Crop Sciences Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and EcologyMinistry of AgricultureBeijing 100081China HIPHEN Rue Charrue84000 AvignonFrance ARVALIS-Institut du V′eg′etal Station Exp′erimentale91720 BoignevilleFrance

Total above-ground biomass at harvest and ear density are two important traits that characterize wheat *** experiments were carried out in two different sites where several genotypes were grown under contrasted irrigation and nitrogen treatments.A high spatial resolution RGB camera was used to capture the residual stems standing straight after the cutting by the combine machine during *** provided a ground spatial resolution better than 0.2 mm.A Faster Regional Convolutional neural network(Faster-RCNN)deep-learning model was first trained to identify the stems cross *** showed that the identification provided precision and recall close to 95%.Further,the balance between precision and recall allowed getting accurate estimates of the stem density with a relative RMSE close to 7%and robustness across the two experimental *** estimated stem density was also compared with the ear density measured in the field with traditional methods.A very high correlation was found with almost no bias,indicating that the stem density could be a good proxy of the ear *** heritability/repeatability evaluated over 16 genotypes in one of the two experiments was slightly higher(80%)than that of the ear density(78%).The diameter of each stem was computed from the profile of gray values in the extracts of the stem cross *** show that the stem diameters follow a gamma distribution over eachmicroplot with an average diameter close to ***,the biovolume computed as the product of the average stem diameter,the stem density,and plant height is closely related to the above-ground biomass at harvest with a relative RMSE of 6%.Possible limitations of the findings and future applications are finally discussed.

关键词： Biomass straight finally

Clinical impact of hepatitis B and C virus envelope glycoproteins

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2013年第5期19卷 654-664页

作者： Hélène Jeulin Aurélie Velay John Murray Evelyne Schvoerer Virology Laboratory Centre Hospitalier Universitaire de NancyVandoeuvre-lès-NancyF-54511France EA RHEM 4369 Universitéde LorraineF-54000 NancyFrance School of Mathematics and Statistics University of New South WalesSydneyNSW 2052Australia The Kirby Institute University of New South WalesSydneyNSW 2052Australia

Chronic infection by either hepatitis B virus(HBV)or hepatitis C virus(HCV)share epidemiological characteristics with risks for development of severe complications such as liver cirrhosis and hepatocellular *** and HCV also share a high genetic variability. Among highly variable regions,viral genes encoding surface proteins(hepatitis B surface antigen,E1/E2 HCV glycoproteins)play key roles in the stimulation of the host-related immune response and viral entry into *** segments of HBV envelope proteins(preS1,"a"determinant)are crucial in the entry process into permissive *** entry is a complex multistep process involving multiple cell cofactors (glycosaminoglycans,low density lipoprotein receptor, SR-B1,CD81,claudin-1,occludin,EGFR,EphA2)in the interaction with HCV E1/E2 envelope *** vitro both viruses can be controlled by antibody-me-diated neutralization targeting viral envelope,also essential in preventing HBV infection in vivo as observed through successful vaccination using HBs *** preventive vaccination and/or therapeutic pressure can influence HBV and HCV *** HBV,the patterns of antiviral drug resistance in chronic hepatitis are complex and the original pol/S gene overlap has to be taken into ***-induced HBV mutations in pol could indeed generate S mutants with subsequent modified antigenicity or increased cancer *** of HBV and HCV envelope proteins combining high exposure to selective pressures and crucial functional roles require investigation in the context of diagnostic,vaccination and treatment *** this editorial a synthesis is performed of HBV and HCV envelope properties at the entry step and as antigenic proteins,and the subsequent clinical impact.

关键词： Hepatitis B Hepatitis C Viral envelope glycoproteins Clinical outcome

Reconstruction of hollow areas in density profiles from frequency swept reflectometry

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plasma Science and Technology 2020年第6期22卷 32-40页

作者： Rennan B MORALES Stéphane HEURAUX Roland SABOT Sébastien HACQUIN Frédéric CLAIRET the Tore Supra Team United Kingdom Atomic Energy Authority Culham Centre for Fusion EnergyCulham Science CentreAbingdonOxonOX143DBUnited Kingdom IJL UMR CNRSUniversity of LorraineBP50840NancyF-54011France Institute of Physics University of Sao PauloSao Paulo 05315-970Brazil IRFM CEACadaracheF-13108 Saint-Paul-lez-DuranceFrance EUROfusion Programme Management Unit Culham Science CentreCulham OX143DBUnited Kingdom

The standard density profile reconstruction techniques are based on the WKB approximation of the probing wave’s phase,making them unable to properly reconstruct blind areas in the cut-off frequency *** reconstruction suffers a significant immediate error that is not rapidly *** is demonstrated that even though no reflections occur inside the hollow region causing the blind area,the higher probing frequencies that propagate through it carry information that can be used to estimate its *** usually ignored full-wave effects were investigated with the use of full-wave simulations in 1 D,with special attention paid to the frequency band where they are dominant.A database of perturbation signals was simulated onfive-dimensions of parameters and an application of the database inversion was demonstrated for a magnetic island in a Tore Supra *** new adapted reconstruction scheme improved the description of the density profile inside the hollow region and also along 10 cm after it.

关键词： FM-CW reflectometry profile reconstruction reflectometry density profile hollow profile blind area