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An efficient sensitivity analysis for energy performance of building envelope: A continuous derivative based approach

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Building Simulation 2021年第4期14卷 909-930页

作者： Ainagul Jumabekova julien Berger Aurélie Foucquier UMR 5271 CNRS LOCIEUniversity of Grenoble AlpesUniversity of Savoie Mont Blanc73000ChambéryFrance LaSIE La Rochelle UniversityCNRSUMR 735617000La RochelleFrance CEA LITENDTSINESUniversity of Grenoble AlpesF-38000GrenobleFrance

Within the framework of building energy assessment,this article proposes to use a derivative based sensitivity analysis of heat transfer models in a building ***,global and local,estimators are obtained at low computational cost,to evaluate the influence of the parameters on the model *** of these estimators values allows to reduce the number of model unknown parameters by excluding non-significant parameters.A comparison with variance and regression-based methods is carried out and the results highlight the satisfactory accuracy of the continuous-based ***,for the carried investigations the approach is 100 times faster compared to the variance-based methods.A case study applies the method to a real-world building *** sensitivity of the thermal loads to local or global variations of the wall thermal properties is ***,a case study of wall with window is analyzed.

关键词： heat transfer sensitivity analysis continuous derivative based approach parameter estimation problem DuFort-Frankel numerical scheme sensitivity coefficients

Biomimetic Autopilot Based on Minimalistic Motion Vision for Navigating along Corridors Comprising U-shaped and S-shaped Turns

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Journal of Bionic Engineering 2015年第1期12卷 47-60页

作者： julien R. Serres Franck Ruffier Aix-Marseille UniversitY CNRS ISM UMR 7287 Biorobotics Lab 13288 Marseille Cedex 09 France

A bioinspired autopilot is presented, in which body saccadic and intersaceadic systems are combined. This autopilot en- ables a simulated hovercraft to travel along corridors comprising L-junctions, U-shaped and S-shaped turns, relying on mini- realistic motion vision cues alone without measuring its speed or distance from walls, in much the same way as flies and bees manage their flight in similar situations. The saccadic system responsible for avoiding frontal collisions triggers yawing body saccades with appropriately quantified angles based simply on a few local optic flow measurements, giving the angle of inci- dence with respect to a frontal wall. The simulated robot negotiates stiff bends by triggering body saccades to realign its tra- jectory, thus traveling parallel with the wall along a corridor comprising sharp turns. Direct comparison shows that the per- formance of this new body saccade-based autopilot closely resembles the behavior of a fly using similar body saccade strategy when flying along a corridor with an S-shaped turn, despite the huge differences in terms of the inertia.

关键词： optic flow collision avoidance body saccades insect flight biorobotics biomimetics

Dual angiogenesis and PD-1 blockade in hepatocellular carcinoma

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Hepatobiliary Surgery and Nutrition 2020年第3期9卷 350-352页

作者： julien Calderaro Département de Pathologie Centre Hospitalier Universitaire Henri MondorAssistance Publique Hôpitaux de ParisCréteilFrance Inserm U955 Team 18UniversitéParis-Est CréteilCréteilFrance

Hepatocellular carcinoma(HCC)is the fourth leading cause of cancer related-death worldwide and its incidence is rising in most western countries(1).

关键词： death carcinoma hepatocellular

Classification of Sandstone-Related Uranium Deposits

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Journal of Earth Science 2022年第2期33卷 236-256页

作者： Michel Cuney julien Mercadier Christophe Bonnetti Universitéde Lorraine GéoRessourcesCNRSCREGUNancy F54500France 2.State Key Laboratory of Nuclear Resources and EnvironmentEast China University of TechnologyNanchang 330013China

Sandstone type deposits are the most common type of uranium deposits in the world.A large variety of sub-types have been defined,based either on the morphology of the deposits(e.g.,tabular,roll front,etc),or on the sedimentological setting(e.g.,paleovalley,paleochannel,unconformity),or on tectonic or lithologic controls(e.g.,tectonolithologic,mafic dykes/sills),or still on a variety of others characteristics(phreatic oxidation type,interlayer permeable type,multi-element stratabound infiltrational,solution front limb deposit,humate type,etc.),reflecting the diversity of the characteristics of these deposits,but making it difficult to have a clear overview of these ***,uranium deposits occurring in the same sedimentological setting(e.g.,paleochannel),presenting similar morphologies(e.g.,tabular),may result from different genetic mechanisms and thus can be misleading for exploration *** aim of the present paper is to propose a new view on sandstone-related uranium deposits combining both genetic and descriptive *** dual view is indeed of primordial importance because all the critical characteristics of each deposit type,not limited to the morphology/geometry of the ore bodies and their relationships with depositional environments of the sandstone,have to be taken into account to propose a comprehensive classification of uranium *** this respect,several key ore-forming processes,like the physical-chemical characteristics of the mineralizing fluid,have to be used to integrate genetic aspects in the *** a succession of concentration steps,potentially temporally-disconnected,are involved in the genesis of some uranium mineralization,the classification here proposed will focus on the main mechanisms responsible for the formation and/or the location of ore *** objective of this paper is also to propose a robust and widely usable terminology to define and categorize sandstone uranium deposits,considering

关键词： sandstone uranium genetic classification redox control depositional environment fluids ore deposit geology

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World Journal of Gastroenterology 2014年第22期20卷 6725-6743页

作者： Mathieu Meleine julien Matricon Department of Inflammation Nutrition and Gut-Brain Axis DysfunctionInserm Unit 1073Faculté de Médecine et PharmacieUniversité de Rouen76183 RouenFrance julien Matricon Clermont UniversitéUniversité d’Auvergne63001 Clermont-FerrandFrance Department of Pharmacology. University of Texas Health Science Center San AntonioTX 78229-3900United States

According to epidemiological studies,twice as many women as men are affected by irritable bowel syndrome(IBS)in western countries,suggesting a role for sex hormones in IBS *** growing evidence about the implications of sex hormones in IBS symptom modulation,data on mechanisms by which they influence disease development are *** review aims to determine the state of knowledge about the role of sex hormones in sensorimotor dysfunctions and to address the possible interplay of sex hormones with common risk factors associated with *** scientific bibliography was searched using the following keywords:irritable bowel syndrome,sex,gender,ovarian hormone,estradiol,progesterone,testosterone,symptoms,pain,sensitivity,motility,permeability,stress,immune system,brain activity,spinal,supraspinal,*** hormones variations along themenstrual cycle affect sensorimotor gastrointestinal function in both healthy and IBS *** can modulate pain processing by interacting with neuromodulator systems and the emotional system responsible for visceral pain *** hormones can also modulate the susceptibility to stress,which is a pivotal factor in IBS occurrence and symptom *** instance,estrogen-dependent hyper-responsiveness to stress can promote immune activation or impairments of gut barrier *** conclusion,whereas it is important to keep in mind that ovarian hormones cannot be considered as a causal factor of IBS,they arguably modulate IBS onset and ***,our understanding of the underlying mechanisms remains limited and studies assessing the link between IBS symptoms and ovarian hormone levels are needed to improve our knowledge of the disease evolution with regard to *** studies assessing the role of male hormones are also needed to understand fully the role of sex hormones in ***,investigation of brain-gut interactions is critical to decipher how stress,ovarian hormones,an

关键词： Irritable bowel syndrome Pathophysiology Gender Sex hormones Gut Sensori-motricity Neurosensitization Stress Immune activation Permeabilization

DAM IMPACTS ON AND RESTORATION OF AN ALLUVIAL RIVER-RIO GRANDE, NEW MEXICO

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International Journal of Sediment Research 2003年第2期18卷 89-96页

作者： Gigi RICHARD,Pierre julien Department of Physical and Environmental Sciences Mesa State College Grand Junction CO Department of Civil Engineering Engineering Research Center Colorado State University Fort Collins CO USA USA

The impact of construction of dams and reservoirs on alluvial rivers extends both upstream and downstream of the dam. Downstream of dams, both the water and sediment supplies can be altered leading to adjustments in the river channel geometry and ensuing changes in riparian and aquatic habitats. The wealth of pre and post-regulation data on the Middle Rio Grande, New Mexico, provides an excellent case study of river regulation, channel adjustments, and restoration efforts. Cochiti Dam was constructed on the main stem of the Rio Grande in 1973 for flood control and sediment retention. Prior to dam construction, the Rio Grande was a wide, sandy braided river. Following dam construction, the downstream channel bed degraded and coarsened to gravel size, and the planform shifted to a more meandering pattern. Ecological implications of the geomorphic changes include detachment of the river from the floodplain, reduced recruitment of riparian cottonwoods, encroachment of non-native saltcedar and Russian olive into the floodplain, and degraded aquatic habitat for the Rio Grande silvery minnow. Recent restoration strategies include removal of non-native riparian vegetation, mechanical lowering of floodplain areas, and channel widening.

关键词： River morphology Effects of dams Rio Grande

UPLAND EROSION MODELING WITH CASC2D-SED

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International Journal of Sediment Research 2002年第4期17卷 265-274页

作者： Pierre julien,Rosalía ROJAS Engineering Research Center Colorado State University Research Associate Civil Engineering Dept. Colorado State University Professor of Civil EngineeringFortCollins CO80523 USA Fort Collins CO80523 USA

Developed at Colorado State University, CASC2D-SED is a physically-based model simulating the hydrologic response of a watershed to a distributed rainfall field. The time-dependent processes include: precipitation, interception, infiltration, surface runoff and channel routing, upland erosion, transport and sedimentation. CASC2D-SED is applied to Goodwin Creek, Mississippi. The watershed covers 21 km2 and has been extensively monitored both at the outlet and at several internal locations by the ARS-NSL at Oxford, MS. The model has been calibrated and validated using rainfall data from 16 meteorological stations, 6 stream gauging stations and 6 sediment gauging stations. Sediment erosion/deposition rates by size fraction are predicted both in space and time. Geovisualization, a powerful data exploration technique based on GIS technology, is used to analyze and display the dynamic output time series generated by the CASC2D-SED model.

关键词： Geographical Information System (GIS) Hydrologic model Soil erosion Watershed

Analytical Solution for Waves Propagation in Heterogeneous Acoustic/Porous Media. Part I: The 2D Case

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Communications in Computational Physics 2010年第3期7卷 171-194页

作者： julien Diaz Abdelaaziz Ezziani Project-team Magique-3D INRIA Bordeaux Sud-Ouest LMA Pau CNRS UMR 5142I.P.R.A-Universit´e de Pau et des Pays de l’Adouravenue de l’Universit´e BP 1155-64013 PAU CEDEXFrance

Thanks to the Cagniard-de Hoop’s method we derive the solution to theproblem of wave propagation in an infinite bilayered acoustic/poroelastic media, wherethe poroelastic layer is modelled by the biphasic Biot’s model. This first part is dedi-cated to solution to the two-dimensional problem. We illustrate the properties of thesolution, which will be used to validate a numerical code.

关键词： Biot’s model poroelastic waves acoustic waves acoustic/poroelastic coupling ana-lytical solution Cagniard-de Hoop’s technique 2D

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Mathematical epidemiology in a data-rich world

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Infectious Disease Modelling 2020年第1期5卷 161-188页

作者： julien Arino Department of Mathematics&Data Science NEXUS University of ManitobaWinnipegManitobaCanada

I discuss the acquisition and use of“background”data in mathematical epidemiology models,advocating a proactive approach to the incorporation of said data.I illustrate various mechanisms for acquiring data,mainly fr... 详细信息

关键词： Mathematical epidemiology Data acquisition Open data