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Nano Research 2023年第2期16卷 2728-2737页

作者： Aurica Farcas Hadjer Ouldali Corneliu Cojocaru Manuela Pastoriza-Gallego Ana-Maria Resmerita Abdelghani Oukhaled “Petru Poni”Institute of Macromolecular Chemistry 700487 IasiRomania CY cergy Paris Université CNRSLAMBE95000 CergyFrance

A multi-technique approach to prove the preparation of poly(3,4-ethylenedioxythiophene/cucurbit[7]uril)pseudorotaxanes(PEDOT∙CB7-PPs)is *** docking simulation and matrix-assisted laser desorption/ionization mass spectrometry(MALDI MS)validate the complexation ability of the CB7 molecule towards 3,4-ethylenedioxythiophene(EDOT),which leads to the EDOT∙CB7 inclusion *** polymerization of EDOT∙CB7 enabled the synthesis of PEDOT∙*** water-soluble part of PEDOT∙CB7-PPs was selected,freeze-dried,and chemically ***,dynamic light scattering(DLS)has been used to study the particle size and z-potential(ZP-ζ)of PEDOT∙*** ZP-ζvalue(35 mV)evidenced that the PEDOT∙CB7-PPs formed stable water *** combining the emerging nanopore resistive pulse sensing technique(Np-RPS)and computational modeling,we identified strong interactions of PEDOT∙CB7-PPs with the aerolysin(Ael)***∙CB7-PPs behave as positive charged species,and thus trans negative bias promotes its interactions with the Ael *** computational modeling results are fully consistent with the Np-RPS detection,which also reveals strong interactions between PEDOT∙CB7-PPs and the Ael *** this study,we hope to provide new insights and a better understanding of the interactions between supramolecular complexes based on CB7 and biological entities,which is instrumental for future applications in the field of nanobiotechnology.

关键词： supramolecular encapsulation poly(3,4-ethylenedioxythiophene)(PEDOT) cucurbituril aerolysin electrical detection computational modeling

Predictive control of a chaotic permanent magnet synchronous generator in a wind turbine system

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Chinese Physics B 2015年第1期24卷 177-183页

作者： Manal Messadi Adel Mellit Karim Kemih Malek Ghanes LRE Laboratory Jijel University BP 98 ouled Aissa Jijel Algeria L2EI laboratory Jijel University BP 98 ouled Aissa Jijel Algeria ECS-ENSEA cergy-pontoise France 6 avenue du Ponceau 95014 Cergy-Pontoise Cedex

This paper investigates how to address the chaos problem in a permanent magnet synchronous generator（PMSG） in a wind turbine system. Predictive control approach is proposed to suppress chaotic behavior and make operating stable;the advantage of this method is that it can only be applied to one state of the wind turbine system. The use of the genetic algorithms to estimate the optimal parameter values of the wind turbine leads to maximization of the power ***, some simulation results are included to visualize the effectiveness and robustness of the proposed method.

关键词： permanent magnet synchronous generator chaotic system genetic algorithm predictive control

Numerical Study on the Combined Use of Corten Steel and Phase Change Materials in Container-Type Houses

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Fluid Dynamics & Materials Processing 2023年第4期19卷 953-958页

作者： Feriel Mustapha Marwa El Yassi Ikram El Abbassi Abdelhak Kaci Elhadj Kadri A-Moumen Darcherif LR2E Research Laboratory in Industrial Eco-Innovation and EnergeticsCergy95000France L2MGC Laboratory of Mechanic and Materials of Civil Engineering Cergy95000France Laboratory of QUARTZ(EA 7393) University of Paris-SeineCergy-Pontoise95014France

A study is presented on the feasibility of an approach based on the combination of Phase Change Materials(PCM)with metal walls in container-type *** line of research finds its motivations in recent trends in the energy and building sectors about energy consumption *** important objective concerns possible improvements in the comfort provided by such houses during the summer *** results obtained through numerical solution of the governing equations accounting for heat transfer and latent heat effects associated with the PCM show that the indoor temperature can be reduced with a varying degree of success depending on the considered conditions.

关键词： Metallic wall phase change materials corten steel thermal comfort

Comparative Study of Two Materials Combining a Standard Building Material with a PCM

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Fluid Dynamics & Materials Processing 2023年第5期19卷 1283-1290页

作者： Marwa El Yassi Ikram El Abbassi Alexandre Pierre Yannick Melinge Research Laboratory in Industrial Eco-innovation and Energetics(LR2E) ECAM-EPMICergy-Pontoise95000France Laboratory of Mechanic and Materials of Civil Engineering(L2MGC) University of Cergy-PontoiseCergy-Pontoise95000France Historical Monuments Research Laboratory(LRMH) Champs-sur-Marne77420France

Phase change materials(PCMs)have the ability to store thermal energy and make it available at a later stage to keep indoor temperature within a specific range and achieve better thermal comfort in *** study focuses on the performances of materials obtained by combining a standard building material with a *** particular,two different materials mixed with the same PCM are considered under the same climatic *** related thermal behavior is assessed in the framework of numerical simulations conducted with ANSYS Fluent assuming parameters representative of a city located in *** results show that the addition of PCM to concrete and bricks can improve the thermal inertia of the resulting material.

关键词： Phase change materials building material thermal comfort passive cooling

Polypeptide analysis for nanopore-based protein identification

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Nano Research 2022年第11期15卷 9831-9842页

作者： Mazdak Afshar Bakshloo Safia Yahiaoui Fabien Piguet Manuela Pastoriza-Gallego Régis Daniel Jérôme Mathé John J.Kasianowicz Abdelghani Oukhaled CY cergy Paris Université CNRSLAMBE95000CergyFrance UniversitéParis-Saclay Univ EvryCNRSLAMBE91025Evry-CourcouronnesFrance university of South Florida Dept.of PhysicsTampaFL 33620USA Freiburg Institute for Advanced Studies Universität FreiburgFreiburg 79104Germany

Presently,proteins are identified by cleaving them with proteases,measuring the mass to charge ratio of the fragments with a mass spectrometer,and matching the fragments to segments within known proteins in *** earlier demonstrated that a nanometer-scale pore formed by aerolysin(AeL)can discriminate between,and therefore identify,three similar size proteins from their trypsin-cleaved polypeptide *** this nanopore-protease method,the protein’s identity is instead determined from characteristic ionic current blockade patterns caused by the polypeptide fragments that enter the *** results also suggested that not all of the theoretically expected cleavage products partition into the *** better understand the mechanism by which polypeptide fragments are captured,and how different polypeptides reduce the pore’s ionic current,we studied the effects of 11 identical length polypeptides with different net charges and charge *** show that under certain experimental conditions,negative,positive,and neutral polypeptides are driven into the AeL pore by the same applied voltage *** capture rate and dwell time of polypeptides in the pore depend strongly on the ionic strength,the magnitude of the applied voltage,and the net charge and charge distribution of the *** dwell time distribution depends nonmonotonically on the applied voltage(regardless of the polymer’s net charge),and its maximum value depends on the polypeptide net charge and charge *** maximum dwell time for different polypeptides does not occur at the same applied voltage amplitude,which conceivably might complicate the detection and discrimination of some polypeptide *** additional experiments,computer simulations,and artificial intelligence research are needed to better understand how to optimize the partitioning of enzymatically cleaved fragments into the AeL nanopore,the method is still capable of accurately identifying

关键词： protein identification nanopores trypsin enzymatic degradation

Ageing of GaN HEMT devices： which degradation indicators？

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Journal of Semiconductors 2016年第1期37卷 34-37页

作者： A. Divay O. Latry C. Duperrier F. Temcamani Groupe de Physique des Materiaux Universite et INSA de Rouen-UMR CNRS 6634-Normandie UniversiteSaint Etienne du RouvrayFrance university of cergy ETIS UMR 8051 CNRSENSEA95000 Cergy-PontoiseFrance ECS-Lab ENSEA95000 Cergy-PontoiseFrance

A following of diverse degradation indicators during the ageing in operational conditions of A1- GaN/GaN HEMTs （high electron mobility transistors） is proposed. Measurements of pulsed I-V, Schottky barrier height, RF output power and gate current versus output power during the early phase of the ageing test （2000 h on a 6000 h total） are presented. These preliminary results give insight on some of the principal degradation indicators that are interesting to follow during an ageing test close to operational conditions on such components.

关键词： GaN HEMT ageing tests reliability

On the Telegrapher’s Equation with Three Space Variables in Non-Rectangular Coordinates

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Journal of Applied Mathematics and Physics 2020年第5期8卷 910-926页

作者： Tristan Guillaume Thema Research Unit CY Cergy Paris University Cergy France

This article provides a closed form solution to the telegrapher’s equation with three space variables defined on a subset of a sphere within two radii, two azimuthal angles and one polar angle. The Dirichlet problem for general boundary conditions is solved in detail, on the basis of which Neumann and Robin conditions are easily handled. The solution to the simpler problem in cylindrical coordinates is also provided. Ways to efficiently implement the formulae are explained. Minor adjustments result in solutions to the wave equation and to the heat equation on the same domain as well, since the latter are particular cases of the more general telegrapher’s equation.

关键词： Telegrapher’s Equation Spherical Coordinates Fourier-Bessel-Legendre Series Expansion Associated Legendre Functions Hyperbolic PDE Initial Boundary Value Problem

Belief Combination of Classifiers for Incomplete Data

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IEEE/CAA Journal of Automatica Sinica 2022年第4期9卷 652-667页

作者： Zuowei Zhang Songtao Ye Yiru Zhang Weiping Ding Hao Wang IEEE the Research Center for Optical Fiber Sensing Zhejiang Laboratory the School of Automation Northwestern Polytechnical University the School of Cyber Engineering Xidian University the Department of Computer Science CY Cergy Paris Université the School of Information Science and Technology Nantong University the School with of Cyber Engineering Xidian University the Department of Computer Science Norwegian University of Science and Technology

Data with missing values,or incomplete information,brings some challenges to the development of classification,as the incompleteness may significantly affect the performance of *** this paper,we handle missing values in both training and test sets with uncertainty and imprecision reasoning by proposing a new belief combination of classifier(BCC)method based on the evidence *** proposed BCC method aims to improve the classification performance of incomplete data by characterizing the uncertainty and imprecision brought by *** BCC,different attributes are regarded as independent sources,and the collection of each attribute is considered as a ***,multiple classifiers are trained with each subset independently and allow each observed attribute to provide a sub-classification result for the query ***,these sub-classification results with different weights(discounting factors)are used to provide supplementary information to jointly determine the final classes of query *** weights consist of two aspects:global and *** global weight calculated by an optimization function is employed to represent the reliability of each classifier,and the local weight obtained by mining attribute distribution characteristics is used to quantify the importance of observed attributes to the pattern *** comparative experiments including seven methods on twelve datasets are executed,demonstrating the out-performance of BCC over all baseline methods in terms of accuracy,precision,recall,F1 measure,with pertinent computational costs.

关键词： Classifier fusion classification evidence theory incomplete data missing values

Characterization of intrinsic hole transport in single-crystal spiro-OMeTAD

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npj Flexible Electronics 2017年第1期1卷 8-15页

作者： Yuan Li Haoyuan Li Cheng Zhong Gjergji Sini Jean-Luc Brédas KAUST Solar Center Physical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia Laboratoire de Physico-chimie des Polymères et des Interfaces Universitéde Cergy-Pontoise5 Mail Gay LussacNeuville sur OiseCergy-Pontoise Cedex 95031France

Spiro-OMeTAD remains a prominent hole-transport material in perovskite and solid-state dye-sensitized solar ***,an understanding of its intrinsic hole-transport properties is still ***,hole transport in spiro-OMeTAD is systematically characterized on the basis of the recently reported X-ray single-crystal *** approach combining density functional theory calculations,tight-binding modeling,and kinetic Monte Carlo simulations are exploited to describe the key parameters governing hole transport and to investigate the transport mechanism and hole mobilities in the spiro-OMeTAD single *** results provide insight into:(i)why an anisotropic hole-transport mechanism,with an upper range of intrinsic hole mobilities on the order of~10^(−3)cm^(2)/Vs,can be expected in the single crystal;and(ii)how detrimental factors,related to the presence of the spiro motif and of the 4,4′-dimethoxydiphenylamine substituents,limit the intrinsic hole mobilities of the system.

关键词： intrinsic crystal spiro

The integral equations of Compton Scatter Tomography

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Open Journal of Applied Sciences 2012年第4期2卷 53-56页

作者： M. K. Nguyen T. T. Truong Equipes Traitement de l’Information et Systèmes (ETIS) UMR CNRS 8051/ ENSEA / university of cergy-Pontoise F-95014 cergy-Pontoise France Laboratoire de Physique Théorique et Modélisation (LPTM) UMR CNRS 8089 / university of cergy-Pontoise F-95302 cergy-Pontoise

Two new Compton Scatter Tomography modalities, which are aimed at imaging hidden structures in bulk matter for industrial non-destructive control (or testing) and for medical diagnostics are shown to be based on the solutions of a special class of Chebyshev integral transforms. Besides their remarkable analytic properties, they can be inverted by existing methods which lend themselves nicely to numerical treatment and provide convergent, stable and fast computation algorithms. The existence of explicit inversion formulas implies that viable new imaging techniques can be developed, which may take over the current ones in a near future.

关键词： Integral transforms Radon transforms Compton scatter imaging Non-destructive testing Medical imaging.