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Communications in Computational Physics 2011年第10期10卷 1280-1304页

作者： Pauline Klein Xavier Antoine christophe Besse Matthias Ehrhardt Institut Elie CartanNancy Nancy-UniversiteCNRSUMR 7502INRIA CORIDA TeamBoulevard des Aiguillettes B.P.23954506 Vandoeuvre-les-NancyFrance Laboratoire Paul Painleve CNRS UMR 8524Simpaf Project Team-Inria CR Lille Nord EuropeUniversite des Sciences et Technologies de LilleCite Scientifique59655 Villeneuve d’Ascq CedexFrance Lehrstuhl fur Angewandte Mathematik und Numerische Analysis Fachbereich C-Mathematik und NaturwissenschaftenBergische Universitat WuppertalGaußstr.2042119 WuppertalGermany

We propose a hierarchy of novel absorbing boundary conditions for the onedimensional stationary Schr¨odinger equation with general(linear and nonlinear)*** accuracy of the new absorbing boundary conditions is investigated numerically for the computation of energies and ground-states for linear and nonlinear Schr¨odinger *** turns out that these absorbing boundary conditions and their variants lead to a higher accuracy than the usual Dirichlet boundary ***,we give the extension of these ABCs to N-dimensional stationary Schr¨odinger equations.

关键词： Absorbing boundary conditions stationary Schrodinger equations unbounded domain spatially dependent potential ground states computation

Burundi's Integration into the East African Community:Challenges and Prospects

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Burundi's Integration into the East African Community:Challe...

作者： Nkundabagenzi christophe 山东大学

学位级别：硕士

The thesis analyzes the challenges and prospects of Burundi's integration into the East African *** analysis,it emerges that the East African Community(herein after referred to as EAC)is a regional intergovernmental organization,composed of six Member States such as Tanzania,Uganda,Kenya,Burundi,Rwanda and South *** of Burundi into this organization is a strategic option to respond to its landlocked geographical situation but also to ensure socioeconomic *** basis ofmy research,Burundi's participation inthe EAC faces many *** include political instability due to external influence and the lack of a political and democratic culture in *** tensions between Burundi and Rwanda are a major handicap in the process of integrating Burundi into the *** economy also continues to face structural weaknesses such as low diversification of productive structure,insufficient and inadequate economic infrastructure,and low public and private investment *** overcome the challenges facing Burundi's regional integration and reap the benefits of the EAC,the study shows that Burundi needs to initiate reforms and strategies that can serve the cause of regional *** include,but not limited to,re-establishing political-diplomatic relations between Burundi and Rwanda;Peace and democracy must be consolidated and strengthened in Burundi;Political cooperation between EAC member states must be *** the economic front,reforms are urgently needed so that Burundi can benefit from its integration into the *** are economic reforms designed to boost investment and economic growth,in particular the improvement and strengthening of infrastructure supporting trade and economic growth.

关键词： Burundi Integration EAC Challenge Prospects

Nodular fasciitis of the external auditory canal: Clinical case report and review of the literature

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Journal of Otology 2023年第4期18卷 240-245页

作者： Adrien Philippart Jean-christophe Degols Jacques Vilain Department of Oto-Rhino-Laryngology-Head and Neck Surgery Saint-Luc University HospitalCatholic University of LouvainAvenue Hippocrate 101200BrusselsBelgium Chief of Department of Oto-Rhino-Laryngology-Head and Neck Surgery Saint-Pierre Clinic OttigniesAvenue Reine Fabiola 91340Ottignies-Louvain-la-NeuveBelgium Department of Oto-Rhino-Laryngology-Head and Neck Surgery Saint-Pierre Clinic Ottignies Avenue Reine Fabiola 91340Ottignies-Louvain-la-NeuveBelgium

Nodular fasciitis is a benign reactive soft tissue tumor arising from fibroblasts and *** incidence is low and misdiagnosis is frequent especially for malignant *** can lead to inappropriate and unnecessary invasive *** fasciitis of the external auditory canal is extremely *** far,around fifteen cases have been *** present here the case of a 90-year-old patient with nodular fasciitis of the right external auditory *** lesion extends anteriorly for 6.5 cm and reaches the posterior wall of the maxillary *** our knowledge,this is the first case in the literature of an external auditory canal nodular fasciitis presenting as an inflammatory ear polyp with such a wide extension.

关键词： Nodular fasciitis External ear canal Polyp

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A multi-layer modelling approach for mining versatile ports of a global maritime transportation network

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International Journal of Digital Earth 2023年第1期16卷 2129-2151页

作者： Peng Peng christophe Claramunt Shifen Cheng Yu Yang Feng Lu State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingPeople’s Republic of China Naval Academy Research Institute Brest NavalFrance Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijingPeople’s Republic of China The Academy of Digital China Fuzhou UniversityFuzhouPeople’s Republic of China Jiangsu Center for Collaborative Innovation in Giographical Information Resource Development and Application NanjingPeople’s Republic of China

International ports play critical roles in maintaining transportation flows and sustaining the effectiveness of global maritime *** the concept of versatile ports has been introduced to represent the specific patterns that these ports play at the regional and global levels,there is still a need for the design and development of computational approaches that support these *** paper introduces a flexible multi-layer network approach for an international maritime network whose interest is that it offers a flexible model that favours the identification of the different transportation flows and versatile *** model is complemented by a series of structural indices complemented by a new overlap measure that evaluates the specific role of a given port across various transportation *** whole approach is implemented and experimented with using massive AIS maritime data that supports the automatic generation of the multi-layer network,and derivation of the structural measures while maintaining a flexible view of the maritime *** experiments applied to the global maritime transportation network identify key versatile ports and highlight significant differences at the regional and trade flow levels.

关键词： Versatile port multilayer network aggregated network maritime transportation vessel trajectory data

Improving metal reflectors by suppressing surface plasmon polaritons: a priori calculation of the internal reflectance of a solar cell

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Light(Science & Applications) 2013年第1期2卷 32-37页

作者： Zachary C Holman Stefaan De Wolf christophe Ballif Swiss Federal Institute of Technology Lausanne(EPFL)Institute of Microengineering(IMT)Photovoltaics and Thin-Film Electronics LaboratoryCH-2000 NeuchaˆtelSwitzerland

Imperfect internal reflectance of near-bandgap light reduces the performance of all solar cells,and becomes increasingly detrimental as absorbers become *** consider light incident on the silicon/dielectric/metal structure at the back of rear-passivated crystalline silicon solar cells with surface textures that are large enough for geometric *** calculating the absorbance in the metal as a function of the angle of incidence,we discover three results that are important for understanding and improving rear reflectors in many types of solar ***,significant parasitic absorption occurs in the metal layer in two cases:s-and p-polarized propagating modes(near-normal angles of incidence)when the dielectric thickness is adjusted to cause destructive interference of the reflected beams,and p-polarized evanescent modes(angles of incidence above the semiconductor/dielectric critical angle)that excite surface plasmon polaritons at the metal ***,the latter loss dominates;a well-designed rear dielectric passivation layer must suppress the penetration of evanescent waves to the ***,when used as an input in a simple analytical model,the average rear internal reflectance calculated by assuming a Lambertian angular distribution of light accurately predicts the total reflectance and absorbance of a solar cell.

关键词： light trapping photovoltaics plasmon silicon solar cell

NumericalMethods for Balance Laws with Space Dependent Flux:Application to Radiotherapy Dose Calculation

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Communications in Computational Physics 2011年第10期10卷 1184-1210页

作者： christophe Berthon Martin Frank Celine Sarazin Rodolphe Turpault Universite de Nantes Laboratoire de Mathematiques Jean LerayUMR66292 rue de la HoussiniereBP 9220844322 Nantes Cedex 3France RWTH Aachen University MathematicsCenter for Computational Engineering ScienceSchinkelstrasse 252062 AachenGermany

The present work is concerned with the derivation of numerical methods to approximate the radiation dose in external beam *** address this issue,we consider a moment approximation of radiative transfer,closed by an entropy minimization *** model under consideration is governed by a system of hyperbolic equations in conservation form supplemented by source *** main difficulty coming from the numerical approximation of this system is an explicit space dependence in the flux ***,this dependence will be seen to be stiff and specific numerical strategiesmust be derived in order to obtain the needed accuracy.A first approach is developed considering the 1D case,where a judicious change of variables allows to eliminate the space dependence in the flux *** is not possible in *** therefore reinterpret the 1D scheme as a scheme on two meshes,and generalize this to 2D by alternating transformations between separate *** call this procedure projection *** numerical experiments,coming from medical physics,illustrate the potential applicability of the developed method.

关键词： Radiotherapy hyperbolic system of conservation laws source term approximations finite volume methods

Genetic algorithm-based multiple moving target reaching using a fleet of sailboats

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IET Cyber-Systems and Robotics 2019年第3期1卷 93-100页

作者： Viel christophe Vaultier Ulysse Wan Jian Jaulin Luc School of Engineering Computing and MathematicsUniversity of PlymouthPlymouthDevonUK Lab STICC ENSTA BretagneBrestFrance

This study addresses the problem of Dynamic Travelling Salesman Problem for a multi-agent system using a fleet of sailboats.A genetic algorithm(GA)is proposed,which attributes to each agent a varying number of targets to be *** allows obtaining a suboptimal solution in the shortest time ***,this study adapts it to the specific problem involving a fleet of sailboats,which is a challenging task with comparison to autonomous underwater vehicles or motorised vehicles in terms of the *** motors can be flexibly controlled while sailboat movements are constrained by available wind direction and *** the method takes into account wind conditions at various locations of the *** results demonstrate the effectiveness of the proposed approach.

关键词： agent flex algorithm

Codexas the Basis for National Standards and International Harmonization

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Biomedical and Environmental Sciences 2001年第Z1期 137-144页

作者： KRAISID,christophe LEPRTRE Director FoodandNutritionDivisionTONTISIRIN AssociateProfessionalOfficer(FoodStandards) JointFAO/WHOFoodStandardsProgramme!FoodandNutritionDivision FoodandAgricultureOrganizationoftheUnitedNations(FAO) Rome Italy

Epigenetic control of meiotic recombination in plants

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Science China(Life Sciences) 2015年第3期58卷 223-231页

作者： YELINA Natasha DIAZ Patrick LAMBING christophe HENDERSON Ian R. Department of Plant Sciences University of Cambridge

Meiotic recombination is a deeply conserved process within eukaryotes that has a profound effect on patterns of natural genetic variation. During meiosis homologous chromosomes pair and undergo DNA double strand breaks generated by the Spo11 endonuclease. These breaks can be repaired as crossovers that result in reciprocal exchange between chromosomes. The frequency of recombination along chromosomes is highly variable, for example, crossovers are rarely observed in heterochromatin and the centromeric regions. Recent work in plants has shown that crossover hotspots occur in gene promoters and are associated with specific chromatin modifications, including H2 A.Z. Meiotic chromosomes are also organized in loop-base arrays connected to an underlying chromosome axis, which likely interacts with chromatin to organize patterns of ***, epigenetic information exerts a major influence on patterns of meiotic recombination along chromosomes, genetic variation within populations and evolution of plant genomes.

关键词： meiosis recombination epigenetic crossover chromatin

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A high-order SPH method by introducing inverse kernels

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Chinese Journal of Aeronautics 2017年第1期30卷 1-14页

作者： Fang Le Marongiu Jean christophe Leduc Julien Amicarelli Andrea Caro Joёlleb LMP Ecole centrale de Pekin Beihang University Co-Innovation Center for Advanced Aero-Engine 100083 Beijing China LMFA Ecole centrale de Lyon 69130 Ecully BP 163 France Laboratoire International Associe Beihang University 100083 Beijing China ANDRITZ HYDRO AG Rue des Deux-Gares 6 1800 Vevey Switzerland

The smoothed particle hydrodynamics（SPH） method is usually expected to be an efficient numerical tool for calculating the fluid-structure interactions in compressors; however, an endogenetic restriction is the problem of low-order consistency. A high-order SPH method by introducing inverse kernels, which is quite easy to be implemented but efficient, is proposed for solving this restriction. The basic inverse method and the special treatment near boundary are introduced with also the discussion of the combination of the Least-Square（LS） and Moving-Least-Square（MLS） methods. Then detailed analysis in spectral space is presented for people to better understand this method. Finally we show three test examples to verify the method behavior.

关键词： Consistency High-order method Inverse method Numerical dissipation Numerical instability Smoothed particle hydrodynamics

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