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A Linear Quadratic Controller design Incorporating a Parametric Sensitivity Constraint

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International Journal of Automation and computing 2019年第4期16卷 553-562页

作者： Mohamed Yagoubi LUNAM University Ecole des Mines de Nantes IRCCyN UMR CNRS 6597(Institut de Recherche en Communications et Cyberntique de Nantes)

The purpose of this paper is to propose a synthesis method of parametric sensitivity constrained linear quadratic (SCLQ) controller for an uncertain linear time invariant (LTI) system. System sensitivity to parameter variation is handled through an additional quadratic trajectory parametric sensitivity term in the standard LQ criterion to be minimized. The main purpose here is to find a suboptimal linear quadratic control taking explicitly into account the parametric uncertainties. The paper main contribution is threefold: 1) A descriptor system approach is used to show that the underlying singular linear-quadratic optimal control problem leads to a non-standard Riccati equation. 2) A solution to the proposed control problem is then given based on a connection to the so-called Lur'e matrix equations. 3) A synthesis method of multiple parametric SCLQ controllers is proposed to cover the whole parametric uncertainty while degrading as less as possible the intrinsic robustness properties of each local linear quadratic controller. Some examples are presented in order to illustrate the effectiveness of the approach.

关键词： Linear quadratic control parametric uncertainties trajectory sensitivity non-standard Riccati equation Lur'e matrix equations linear time invariant (LMI) particle swarm optimization

Bolzano's Theorems for Holomorphic Mappings(To Ham Brezis,with friendship and admiration)

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Chinese Annals of Mathematics,Series B 2017年第2期38卷 563-578页

作者： Jean MAWHIN institut de recherche en mathématique et physique universitécatholique de louvain chemin du cyclotron2 1348 Louvain-la-NeuveBelgium

The existence of a zero for a holomorphic functions on a ball or on a rectangle under some sign conditions on the boundary generalizing Bolzano's ones for real functions on an interval is deduced in a very simple way from Cauchy's theorem for holomorphic functions. A more complicated proof, using Cauchy's argument principle, provides uniqueness of the zero, when the sign conditions on the boundary are strict. Applications are given to corresponding Brouwer fixed point theorems for holomorphic functions. Extensions to holomorphic mappings from C^n to C^n are obtained using Brouwer degree.

关键词： Holomorphic function Hadamard-Shih's conditions Poincaré-Miranda's conditions Bolzano's theorem Cauchy's theorem Brouwer fixed point theorem Brouwer degree

Transport Logistics in Pollen Tubes

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Molecular Plant 2013年第4期6卷 1037-1052页

作者： Youssef Chebli Jens Kroeger Anja Geitmann departement de sciences biologiques Institut de recherche en biologie vegetale Universite de Montreal Montreal Quebec Canada Raymor Industries Boisbriand Quebec Canada

Cellular organelles move within the cellular volume and the effect of the resulting drag forces on the liquid causes bulk movement in the cytosol. The movement of both organelles and cytosol leads to an overall motion pattern called cytoplasmic streaming or cyclosis. This streaming enables the active and passive transport of molecules and orga- nelles between cellular compartments. Furthermore, the fusion and budding of vesicles with and from the plasma mem- brane （exo/endocytosis） allow for transport of material between the inside and the outside of the cell. In the pollen tube, cytoplasmic streaming and exo/endocytosis are very active and fulfill several different functions. In this review, we focus on the logistics of intracellular motion and transport processes as well as their biophysical underpinnings. We discuss various modeling attempts that have been performed to understand both long-distance shuttling and short-distance targeting of organelles. We show how the combination of mechanical and mathematical modeling with cell biological approaches has contributed to our understanding of intracellular transport logistics.

关键词： transport processes/kinetics cell expansion cytoskeleton dynamics protein traffic and secretion pollendevelopment.

determinants of the Low Proportion of Pregnant Women Seen for First-Trimester Prenatal Care at KoudougouUrban Medical Center, Burkina-Faso

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Open Journal of Nursing 2024年第8期14卷 421-432页

作者： Swanfani Talardia André Thiombiano Nestor Bationo Ziemlé Clément Meda Iliassa Sawadogo Léa Yameogo Cécile Sanou dieudonné Soubeiga institut de Formation et de Recherche Interdisciplinaire en Science de la Sant et de lEducation (IFRISSE) Ouagadougou et Ecole Nationale de Sant Publique (ENSP) Bobo-Dioulasso Burkina Faso department of Public Health Universit Joseph Ki-ZERBO Ouagadougou Burkina-Faso institut supRieur des Sciences de la Sant (INSSA) de lUniversit Nazi Boni et Centre Hospitalier Universitaire Souro Sanou (CHUSS) Bobo Dioulasso Burkina Faso direction Rgionale de la Sant et de lHygine Publique des Hauts Bassins Bobo Dioulasso Burkina Faso direction Rgionale de la Sant et de lHygine Publique du Centre Ouest Koudougou Burkina Faso Ecole Nationale de Sant Publique Direction Rgionale de Bobo-Dioulasso Bobo-Dioulasso Burkina Faso

Introduction: Antenatal care (ANC) contributes to the reduction of maternal and neonatal morbidity and mortality. The study aimed to investigate the determinants of the low proportion of pregnant women seen for first antenatal care in the first trimester of pregnancy at the urban medical center of Koudougou, Burkina Faso. Materials and Methods: This was a cross-sectional study with data collection from June 08 to August 18, 2021. It involved a sample of 302 participants including 280 pregnant women and 22 maternity providers. Semi-structured individual interviews, non-participant observation, and a literature review were used. Results: Pregnant women age 20 and over, knowledge of the date of their last menstrual period, and knowledge of the antenatal care calendar were associated with coming into contact (1) with Antenatal care in the first trimester of pregnancy. In addition, there was a lack of availability of antenatal care services, inadequate reception of clients, and shortages of health products. Conclusion: There is a need to revisit strategies for communicating with women about ANC, reorganizing ANC services, and improving ANC services.

关键词： Least Risk Maternity Maternal and Neonatal Health Maternal and Neonatal Mortality Maternal and Neonatal Morbidity Reception

Artificial Water Channels—Progress innovations and Prospects

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CCS Chemistry 2023年第2期5卷 279-291页

作者： dan-dan Su Mihail Barboiu institut Européen des Membranes Adaptive Supramolecular Nanosystems GroupUniversity of MontpellierENSCM-CNRSMontpellier F-34095

The design of artificialwater channels(AWCs)aims to mimic natural proteins that effectively mediate the selective transport of water across the bilayer and artificial polymeric ***,impressive progress on synthetic backbones,including selfassembled channels,helical unimolecular,and other functional organic molecules,has been made to provide artificial alternatives and applications in real systems for promising product *** this review,several synthetic channels exploited during the last fewyears are summarized according to their backbone architecture for water transport and ion transport respectively,showing their potential as natural transporter analogs and the importance of AWCs for industrial,environmental,and medical applications.

关键词： artificial water channels self-assembly I-quartet channels pillararenes aquafoldamers water desalination

Extraction and Characterization of Aucoumea klaineana Pierre (Okoume) Extractives

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Journal of Renewable Materials 2019年第6期7卷 517-522页

作者： engozogho Anris Starlin Peguy Bikoro Bi Athomo Arsene Vidal Marcia denaud Louis Safou Tchiama Rodrigue Charrier Bertrand CNRS/Univ Pau&Pays Adour Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux-XylomatUMR525440004Mont de MarsanFrance Laboratoire de Recherche et de Valorisation du Matériau Bois(LaReVa Bois).Ecole Normale Supérieure d’enseignement Technique(enSET).BP.3989 LibrevilleGabon Laboratoire des Substances Naturelles et de Synthèses Organométalliques(LASNSOM).Unitéde Recherche en Chimie(URChi).BP.941 Universitédes Sciences et Techniques de Masuku.Franceville Gabon Laboratoire Bourguignon des Matériaux et Procédé ClunyFrance Ecole Catholique d'Arts et Métiers(ECAM) 40 Montée Saint Barthéllemy69321Lyon cedex O5France-Lyon

In order to promote convenient strategies for the utilization of wood wastes from aucoumea klaineana pierre(okoume)timber industry,various chemical analysis were carried out on samples from different *** extractives content of the bark,sapwood and heartwood of okoume were *** analyses were performed and the stiasny number was *** was found that the bark was richer in fatty acid of high molecular weight while the sapwood was rich in fatty acid of low molecular *** condensed tannins content varied according to the origin and the part of the *** new findings should be useful for green okoume based tannin adhesives.

关键词： Extractibles fatty acids tannins polyphenols stiasny number TGA

Preservation of Juniperus thurifera L.:a rare endangered species in Algeria through in vitro regeneration

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Journal of Forestry Research 2019年第1期30卷 77-86页

作者： Nadia Khater Halima Benbouza Faculté SNV Université Batna 2 institut des Sciences Vétérinaires et Sciences Agronomiques Université Batna 1 Centre de Recherche en Biotechnologies

Juniperus thurifera *** an endemic Cupres saceae from the Aure`s Mountains of north eastern Algeria and endangered,in part,due to the scarcity of viable seeds It is threatened by other abiotic factors and the lack of an effective management strategy will increase its risk o *** dearth of information on its in vitro regeneration impedes its application in forest managemen *** therefore developed a micropropagation protocol using microcuttings with auxiliary *** were grown on different combinations of media supplemented with plant growth regulators at different *** highest number of shoots and branches regenerated from original shoots was obtained on Woody Plant Medium(WPM)supplemented with 6-benzylaminopurine(BAP)(0.5 mg L^(-1))and 2,4-dichlorophe noxyacetic acid(2,4-d)(0.25 mg L^(-1)).The best elongation of shoots was achieved with WPM supplemented with0.5 mg L^(-1)of BAP and 0.25 or 1 mg L^(-1) of 2,*** the second subculture,shoots had a higher number of branches than those of the *** highest rooting rate,38.8%,was obtained with shoots cultured in 1/2 Murashige and Skoog(MS)medium supplemented with 5.0 mg L^(-1)each of indol-3-butyric(IBA)and naphthalene acetic acid(NAA).Similarly,the highest root numbers and lengths were produced on 1/2 MS medium supplemented with IBA and NAA(5.0 mg L^(-1)each).during transfer to acclimatization,rates of plant losses of 50% *** second part of the experiment showed that the best shoot callusing was on WPM supplemented with BAP and 2,4-d,with either the combination 0.5+0.25 or 0.25+0.25 mg L^(-1).The results of this research provide a starting point for further studies on in vitro regeneration of *** for the sustainable management of its unique ecosystem in the Mediterranean basin.

关键词： Juniperus thurifera Callus Conservation Regeneration In vitro culture

Application of systems engineering for development of multifunctional metro systems:Case study on the fifth metro line of the Lyon metro,France

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Underground Space 2021年第1期6卷 24-34页

作者： Nicolas Ziv Andrea Kindinis Jeremie Simon Christophe Gobin Universite Paris-Est Institut de Recherche en ConstructibiliteESTPF-94230 CachanFrance Egis Rail 170 Avenue ThiersF-69006 LyonFrance

Several studies,from both the private sector(McKinsey,engie,and EY)and international organizations(OECd,World Bank,and IMF),have shown that urban population in cities will grow in the coming *** growth implies an increased pressure on all urban networks-transporting people,goods,water,waste,electricity,information,heat,and so *** functions are executed by urban infrastructures entailing huge *** have dedicated our research to the optimization of infrastructures and more precisely of metro systems to offer global solutions to fulfill city needs-the multifunctional *** innovative multifunctional metro system incorporates several other urban networks—optical fiber,high-voltage electric cables,water and sewage pipes,geothermal piles,pneumatic systems,merchandise shuttles,and many others depending on the context of each *** aim of the multifunctional metro is to meet several needs of cities with one common *** a function to a system increases its *** this reason,we focus our research on the application of methods that allow better management of the complexity:systems engineering applied to *** the first part of the paper,we will present a benchmark of multipurpose infrastructures across the world and the benefits of such a system for *** the second part,we will present and illustrate the concept of the multifunctional ***,we will present the method based on systems engineering to analyse multifunctional ***,the concept of a multifunctional metro is illustrated with a case study on the future fifth metro line of Lyon,*** conclusion,we will discuss the current barriers for the development of multifunctional infrastructures.

关键词： Multifunctionality Systems engineering Infrastructure Underground Metro

deep learning methods for biotic and abiotic stresses detection and classification in fruits and vegetables:State of the art and perspectives

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Artificial Intelligence in Agriculture 2023年第3期9卷 46-60页

作者： Sèton Calmette Ariane Houetohossou Vinasetan Ratheil Houndji Castro Gbêmêmali Hounmenou Rachidatou Sikirou Romain Lucas Glele Kakaï Laboratoire de Biomathématiques et d'Estimations Forestières Faculty of Agronomic SciencesUniversity of Abomey-Calavi04 BP 1525CotonouBenin institut de Formation et de Recherche en Informatique University of Abomey-Calavi01 BP 526CotonouBenin Laboratoire de défense des Cultures Centre de Recherches Agricoles d'AgonkanmeyInstitut National des Recherches Agricoles du Bénin(INRAB)01 BP 884CotonouBenin

deep Learning(dL),a type of Machine Learning,has gained significant interest in many fields,including *** paper aims to shed light on deep learning techniques used in agriculture for abiotic and biotic stress detection in fruits and vegetables,their benefits,and the challenges faced by *** papers were collected from Web of Science,Scopus,Google Scholar,Springer,and directory of Open Access Journals(dOAJ)using combinations of specific keywords such as:’deep Learning’OR’Artificial Intelligence’in combination with fruit disease’,vegetable disease’,‘fruit stress',OR‘vegetable stress'following PRISMA *** the initial 818 papers identified using the keywords,132 were reviewed after excluding books,reviews,and the *** recovered scientific papers were from 2003 to 2022;93%addressed biotic stress on fruits and *** most common biotic stresses on species are fungal diseases(grey spots,brown spots,black spots,downy mildew,powdery mildew,and anthracnose).Few studies were interested in abiotic stresses(nutrient deficiency,water stress,light intensity,and heavy metal contamination).deep Learning and Convolutional Neural Networks were the most used keywords,with Googlenet(18.28%),ResNet50(16.67%),and VGG16(16.67%)as the most used ***-two percent of the data used to compile these models come from the fields,followed by data obtained *** problems due to unbalanced classes and the small size of some databases were also *** provided the research gaps and some perspectives from the reviewed *** research works are required for a deep understanding of the use of machine learning techniques in fruit and vegetable studies:collection of large datasets according to different scenarios on fruit and vegetable diseases,evaluation of the effect of climatic variability on the fruit and vegetable yield using AI methods and more abiotic stress studies.

关键词： deep learning Prediction Fruits Vegetables Stress Agricultural yield