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Path Planning of Quadrotors in a Dynamic Environment Using a Multicriteria Multi-Verse Optimizer

Computers, Materials & Continua 2021年第11期69卷 2159-2180页

作者： Raja Jarray Mujahed Al-Dhaifallah Hegazy Rezk Soufiene Bouallègue Research Laboratory in Automatic Control(LARA) National Engineering School of Tunis(ENIT)University of Tunis El ManarTunis1002Tunisia Department of Systems Engineering King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia College of Engineering at Wadi Addawaser Prince Sattam Bin Abdulaziz UniversityAl-Kharj11911Saudi Arabia Department of Electrical Engineering Faculty of EngineeringMinia UniversityMinia61517Egypt High Institute of Industrial Systems of Gabès(ISSIG) University of GabèsGabès6011Tunisia

Paths planning of Unmanned Aerial Vehicles(UAVs)in a dynamic environment is considered a challenging task in autonomous flight control *** this work,an efficient method based on a Multi-Objective MultiVerse Optimization(MOMVO)algorithm is proposed and successfully applied to solve the path planning problem of quadrotors with moving *** a path planning task is formulated as a multicriteria optimization problem under operational *** proposed MOMVO-based planning approach aims to lead the drone to traverse the shortest path from the starting point and the target without collision with moving *** vehicle moves to the next position from its current one such that the line joining minimizes the total path length and allows aligning its direction towards the *** choose the best compromise solution among all the non-dominated Pareto ones obtained for compromise objectives,the modified Technique for Order Preference by Similarity to Ideal Solution(TOPSIS)is investigated.A set of homologous metaheuristics such as Multiobjective Salp Swarm Algorithm(MSSA),Multi-Objective Grey Wolf Optimizer(MOGWO),Multi-Objective Particle Swarm Optimization(MOPSO),and Non-Dominated Genetic Algorithm II(NSGAII)is used as a basis for the performance *** results and statistical analyses show the superiority and effectiveness of the proposed MOMVO-based planning *** obtained results are satisfactory and encouraging for future practical implementation of the path planning strategy.

关键词： Quadrotors path planning dynamic obstacles multi-objective optimization global metaheuristics TOPSIS decision-making Friedman statistical tests

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玉米某些干旱适应性状的遗传：：Ⅰ.产量,开花及每株果穗数间的相互关系

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国外作物育种 1993年第3期12卷 28-29页

作者： gue.,RG 谢勤成

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Development and postnatal neurogenesis in the retina: a comparison between altricial and precocial bird species

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Neural Regeneration Research 2021年第1期16卷 16-20页

作者： Guadalupe Álvarez-Hernán José Antonio de Mera-rodrígue. Yolanda Gañán jorge Solana-Fajardo Gervasio Martín-Partido Joaquín rodrígue.-León Javier Francisco-Morcillo Área de Biología Celular Departamento de AnatomíaBiología Celular y ZoologíaFacultad de CienciasUniversidad de ExtremaduraBadajozSpain Área de Anatomía Humana Departamento de AnatomíaBiología Celular y ZoologíaFacultad de MedicinaUniversidad de ExtremaduraBadajozSpain Servicio de Oftalmología Complejo Hospitalario Universitario de BadajozBadajozSpain

The visual system is affected by neurodegenerative diseases caused by the degeneration of specific retinal neurons,the leading cause of irreversible blindness in *** vertebrate phylogeny,the retina has two kinds of specialized niches of constitutive neurogenesis:the retinal progenitors located in the circumferential marginal zone and Müller *** proliferative activity in the retinal progenitors located in the circumferential marginal zone in precocial birds such as the chicken,the commonest bird model used in developmental and regenerative studies,is very *** region adds only a few retinal cells to the peripheral edge of the retina during several months after hatching,but does not seem to be involved in retinal regeneration.Müller cells in the chicken retina are not proliferative under physiological conditions,but after acute damage some of them undergo a reprogramming event,dedifferentiating into retinal stem cells and generating new retinal ***,regenerative response after injury occurs with low efficiency in the precocial avian *** contrast,it has recently been shown that neurogenesis is intense in the retina of altricial birds at *** particular,abundant proliferative activity is detected both in the circumferential marginal zone and in the outer half of the inner nuclear ***,stem cell niches are very active in the retina of altricial *** more extensive research is needed to assess the potential of proliferating cells in the adult retina of altricial birds,it emerges as an attractive model for studying different aspects of neurogenesis and neural regeneration in vertebrates.

关键词： altricial birds circumferential marginal zone Müller glia postnatal neurogenesis precocial regeneration retinogenesis

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Fractional-Order Control of a Wind Turbine Using Manta Ray Foraging Optimization

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Computers, Materials & Continua 2021年第7期68卷 185-199页

作者： Hegazy Rezk Mohammed Mazen Alhato Mohemmed Alhaider Soufiene Bouallègue College of Engineering at Wadi Addawaser Prince Sattam Bin Abdulaziz UniversityAl-Kharj11911Saudi Arabia Department of Electrical Engineering Faculty of EngineeringMinia University61517MiniaEgypt Research Laboratory in Automatic Control(LARA) National Engineering School of Tunis(ENIT)University of TunisTunis1002Tunisia High Institute of Industrial Systems of Gabès University of GabèsGabès6011Tunisia

In this research paper,an improved strategy to enhance the performance of the DC-link voltage loop regulation in a Doubly Fed Induction Generator(DFIG)based wind energy system has been *** proposed strategy used the robust Fractional-Order(FO)Proportional-Integral(PI)control *** FOPI control contains a non-integer order which is preferred over the integer-order control owing to its *** offers extra flexibility in design and demonstrates superior outcomes such as high robustness and *** optimal gains of the FOPI controller have been determined using a recent Manta Ray Foraging Optimization(MRFO)*** the optimization process,the FOPI controller’s parameters are assigned to be the decision variables whereas the objective function is the error racking that to be *** prove the superiority of the MRFO algorithm,an empirical comparison study with the homologous particle swarm optimization and genetic algorithm is *** obtained results proved the superiority of the introduced strategy in tracking and control performances against various conditions such as voltage dips and wind speed variation.

关键词： Renewable energy modeling wind turbine doubly fed induction generator fractional order control manta ray foraging optimization

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Fungal contamination of stored automobile-fuels in a tropical environment

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Journal of Environmental Sciences 2010年第10期22卷 1595-1601页

作者： Carlos E.rodrígue.-rodrígue. Evelyn rodrígue. Rigoberto Blanco Ivannia Cordero Daniel Segura Research Center in Tropical Diseases and Laboratory of Research in Anaerobic Bacteriology Faculty of MicrobiologyUniversity of Costa Rica Department of Chemical Engineering School of EngineeringAutonomous University of Barcelona Research Center in Electrochemistry and Chemical Energy University of Costa Rica

Because of the lack of reports, the base levels of microbial contamination on stored fuels are unknown in tropical regions and it is unclear whether these levels have some influence on fuel quality parameters. Therefore, fungal quality in automobile fuels stored across Costa Rican territory was evaluated during two years according to the standard ASTM D6974-04. For a total of 96 samples, counts and identification of molds and yeasts were performed on regular gas, premium gas and diesel taken from the bottom and superior part of the container tanks. The highest contamination was found on the bottom of the tanks, where an aqueous phase was usually identified, showing populations over the ones present in the hydrocarbon itself （up to 108 CFU/L）. Diesel was the most contaminated fuel （up to 107 CFO/L）; however, an alteration on the physicochemical parameters was not observed in any kind of fuel. Seventy-five mold strains were isolated, Penicillium sp. being the most common genus （45.8% of the samples）, and ten yeast strains, from the genera Candida sp. and Rhodotorula sp. Four of the yeasts were able to grow on diesel as the sole carbon source, at concentrations ranging from 0.5% to 25%. Increasing the frequency of tank cleaning, adding antimicrobial agents and monitoring microbial populations are recommended strategies to improve microbial quality of stored fuels.

关键词： fuel microbial contamination biodegradation molds yeasts

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The sexually dimorphic expression of glutamate transporters and their implication in pain after spinal cord injury

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Neural Regeneration Research 2025年第11期20卷 3317-3329页

作者： Jennifer M.Colón-Mercado Aranza I.Torrado-Tapias Iris K.Salgado Jose M.Santiago Samuel E.Ocasio Rivera Dina P.Bracho-Rincon Luis H.Pagan Rivera jorge D.Miranda Department of Physiology University of Puerto RicoMedical Sciences CampusSan JuanPRUSA National Institutes of Health National Human Genome Research InstituteBethesdaMDUSA Universidad Central del Caribe School of MedicineBayamónPRUSA University of Puerto Rico Carolina CampusCarolinaPRUSA Institute of Neurobiology San JuanPRUSA

In addition to the loss of motor function,~60% of patients develop pain after spinal cord *** cellular-molecular mechanisms are not well understood,but the data suggests that plasticity within the rostral,epicenter,and caudal penumbra of the injury site initiates a cellularmolecular interplay that acts as a rewiring mechanism leading to central neuropathic *** can lead to the formation of new connections triggering abnormal sensory *** excitatory glutamate transporters are responsible for the reuptake of extracellular glutamate which makes them a critical target to prevent neuronal hyperexcitability and *** previous studies showed a sexually dimorphic therapeutic window for spinal cord injury after treatment with the selective estrogen receptor modulator *** this study,we investigated the anti-allodynic effects of tamoxifen in male and female rats with spinal cord *** hypothesized that tamoxifen exerts anti-allodynic effects by increasing the expression of glutamate transporters,leading to reduced hyperexcitability of the secondary neuron or by decreasing aberrant *** and female rats received a moderate contusion to the thoracic spinal cord followed by subcutaneous slow-release treatment of tamoxifen or matrix pellets as a control(placebo).We used von Frey monofilaments and the“up-down method”to evaluate mechanical *** treatment decreased allodynia only in female rats with spinal cord injury revealing a sexdependent *** expression profile of glutamatergic transporters(excitatory amino acid transporter 1/glutamate aspartate transporter and excitatory amino acid transporter 2/glutamate transporter-1)revealed a sexual dimorphism in the rostral,epicenter,and caudal areas of the spinal cord with a pattern of expression primarily on *** rodents showed a significantly higher level of excitatory amino acid transporter-1 expression while male rodents showed increased

关键词： allodynia central neuropathic pain EAAT-1/GLAST EAAT-2/GLT-1 glutamate transporters selective estrogen receptor modulator sexual dimorphism spinal cord injury trauma

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Combating Drug Resistance in Colorectal Cancer Using Herbal Medicines

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Chinese Journal of Integrative Medicine 2021年第7期27卷 551-560页

作者： Lee Ga-Young Lee Jin-Seok Son Chang-gue.Lee Nam-Hun Department of Clinical Oncology Cheonan Korean Medicine Hospital of Daejeon UniversityCheonan31099Republic of Korea Liver&Immunology Research Center Dunsan Korean Medicine Hospital of Daejeon UniversityDaejeon35235Republic of Korea Department of Internal Medicine Graduated School of Korean MedicineUniversity of DaejeonDaejeon34520Republic of Korea

Colorectal cancer(CRC)is one of the most prevalent and lethal cancer types around the *** of the CRC patients are treated with chemotherapeutic drugs alone or ***,up to 90%of metastatic cancer patients experience the failure of treatment mostly because of the acquired drug resistance,which can be led to multidrug resistance(MDR).In this study,we reviewed the recent literature which studied potential CRC MDR reversal agents among herbal medicines(HMs).Among abundant HMs,6 single herbs,Andrographis paniculata,Salvia miltiorrhiza,Hedyotis diffusa,Sophora flavescens,Curcuma longa,Bufo gargarizans,and 2 formulae,Pien Tze Huang and Zhi Zhen Fang,were found to overcome CRC MDR by two or more different mechanisms,which could be a promising candidate in the development of new drugs for adjuvant CRC chemotherapy.

关键词： colorectal cancer drug resistance herbal medicine

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Biodiesel production from waste frying oil in sub- and supercritical methanol on a zeolite Y solid acid catalyst

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Frontiers of Chemical Science and Engineering 2013年第4期7卷 401-407页

作者： jorge MEDINA-VALTIERRA jorge RAMIREZ-ORTIZ Department of Chemical & Biochemical Engineering Aguascalientes Institute of Technology Aguascalientes Ags. 20256 M6xico Academic Unit of Chemical Sciences Autonomous University of Zacatecas Zac. 98160 Mexico

Waste frying oil （WFO） is a very important feedstock for obtaining biodiesel at low cost and using WFO in transesterification reactions to produce biodiesel helps eliminate local environmental problems. In this study biodiesel was produced from WFO in sub- and super- critical methanol on a zeolite Y solid acid catalyst. The procedure was optimized using a design of experiments by varying the methanol to WFO molar ratio, the reaction temperature, and the amount of catalyst. Typical biodiesel yields varied from 83 to nearly 100% with methyl esters content ranging from 1.41-1.66mol.L-~ and typical dynamic viscosities of 22.1-8.2 cE Gas chromatography was used to determine the molecular composition of the biodiesel. The reaction products contained over 82 wt-% methyl esters, 4.2 wt-% free acids, 13.5 wt-% monoglycer- ides, and 0.3 wt-% diglycerides. The transesterification of WFO with methanol around its critical temperature combined with a zeolite Y as an acid catalyst is an efficient approach for the production of biodiesel with acceptable yields.

关键词： biodiesel methanol critical temperature,waste frying oil zeolite Y

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Origin and evolution of the genera Lonsdaleia and Actinocyathus:Insights for the Mississippian palaeogeography from the western Palaeotethys

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Journal of Palaeogeography 2023年第2期12卷 296-310页

作者： Isabel rodrígue.-Castro Ian D.Somerville Sergio rodrígue. Departamento de Geodinamica Estratigrafía y PaleontologíaUniversidad Complutense de Madrid28040MadridSpain UCD School of Earth Sciences University College DublinBelfieldDublin 4Ireland Instituto de Geociencias(CSIC UCM)Ciudad Universitaria28040MadridSpain

Representatives of the subfamily Lonsdaleiinae Chapman,1893 are common in the Mississippian of the western Palaeotethys.A general analysis of the origin,distribution and evolution of that subfamily has been *** most probable hypothesis for the origin of the genus Lonsdaleia McCoy,1849 is to acquire colonialism via the genus Axophyllum Milne Edwards and Haime,*** d'Orbigny,1849 would be a descendant of Lonsdaleia by increasing integration in the *** first occurrences of Lonsdaleia have been recorded in the lower Visean from northern Britain and northern Tianshan Mountains of northwestern China,but the diversification and migration to the whole Palaeotethys only happened in the late *** hypotheses are proposed on that *** Serpukhovian was also a period of migrations and diversification for these *** Lonsdaleia and Actinocyathus have been recorded in Bashkirian refuges,the Sverdrup Basin in northern Laurasia and the Tindouf Basin in northern Africa,*** division of the western Palaeotethys into six subprovinces based on the distribution of corals is proposed.

关键词： Carboniferous Palaeotethys Biogeography Evolution Rugosa

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Complexity of adaptive testing in scenarios defined extensionally

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Frontiers of Computer Science 2023年第3期17卷 11-28页

作者： Ismael rodrÍgue. David RUBIO Fernando RUBIO Dpto.Sistemas Informáticos y Computación Facultad de InformáticaUniversidad Complutense de MadridMadrid 28040Spain Instituto de Tecnologías del Conocimiento Universidad Complutense de MadridMadrid 28040Spain Instituto de Biomecánica de Valencia.Universitat Politècnica de València València 46022Spain

In this paper,we consider a testing setting where the set of possible definitions of the Implementation Under Test(IUT),as well as the behavior of each of these definitions in all possible interactions,are extensionally defined,i.e.,on an element-by-element and case-by-case *** this setting,the problem of finding the minimum testing strategy such that collected observations will necessarily let us decide whether the IUT is correct or not(i.e.,whether it necessarily belongs to the set of possible correct definitions or not)is studied in four possible problem variants:with or without non-determinism;and with or without more than one possible definition in the sets of possible correct and incorrect *** computational complexity of these variants is studied,and properties such as PSPACE-completeness and Log-APX-hardness are identified.

关键词： formal testing adaptive testing computational complexity PSPACE-completeness approximation hardness

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