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Impact of Temporal Population Distribution on Earthquake Loss Estimation:A Case Study on Sylhet,Bangladesh

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International Journal of Disaster Risk Science 2014年第4期5卷 296-312页

作者： Sharmin ara Department of Urban and Regional Planning Chittagong University of Engineering and TechnologyChittagong 4349Bangladesh

To estimate human loss in an earthquake-prone area, it is necessary to analyze the role played by the spatiotemporal distribution of the area’s resident population. In order to evaluate earthquake impact, this article focuses on the spatiotemporal distribution of population and five scenario earthquakes that form the basis for loss estimation in the city of Sylhet, Bangladesh. Four temporal contexts(weekday, weekly holiday, the 30 days of Ramadan, and strike days) expand the more typical daytime and nighttime settings in which to examine hazard risk. The population distribution for every 2 hour interval in a day is developed for each type of day. A relationship between the occupancy classes and average space(persons per 100 m^2)is used to distribute people in each building regardless of building locations. A total daytime and nighttime population is obtained for each building and the estimated nighttime population is used to model the population for four temporal scenarios in a year based on different factors and weights. The resulting data are employed to estimate population loss for each of the temporal and earthquake scenarios. This study used building-specific human vulnerability curves developed by the Central American Probabilistic Risk Assessment(CAPRA) to obtain possible loss of life estimates. The results reveal that there is a high positive correlation between the spatiotemporal distribution of population and the potential number of casualties.

关键词： Bangladesh CAPRA Distribution modeling Earthquake loss estimation Spatiotemporal population distribution Temporal scenarios

Fatigue severity of patients with idiopathic chronic fatigue compared to healthy subjects

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Journal of Traditional Chinese Medicine 2012年第3期32卷 355-357页

作者： Nam Hun Lee Chang gue Son Liver and Immunology Research Center Daejeon Oriental Hospital of Daejeon University

OBJECTIVE:To analyze the fatigue severity of patients with idiopathic chronic fatigue(ICF) and to compare the severity of this group with that of healthy ***:one hundred and nine ICF patients and 98 healthy subjects were enrolled in this *** severity was measured using the Korean-translated Chalder fatigue severity *** subjects scored each item on a 10-point scale as a self-rating numeric scale(NRS),and additionally rated their feeling of general fatigue by visual analogue scale(VAS).RESULTS:The total NRS scores of patients with ICF was 53 ± 15 compared with 25 ± 14 of healthy subjects(2.4 folds for physical symptoms vs.1.7 folds for mental symptoms respectively).The VAS scores of patients with ICF were 2.7 times as high as those of healthy ***:This report is the first to compare the severity of fatigue between ICF patients and healthy *** study contains reference data applicable for the management of this disorder in field of complementary and alternative medicine.

关键词： Fatigue syndrome,chronic Pain measurement Quality of life

Grey Wolf Optimization Based Tuning of Terminal Sliding Mode Controllers for a Quadrotor

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Computers, Materials & Continua 2021年第8期68卷 2265-2282页

作者： Rabii Fessi Hegazy Rezk Soufiene Bouallègue Research Laboratory in Automatic Control(Lara) National Engineering School of Tunis(ENIT)University of Tunis EL MANARTunis1002Tunisia 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

The research on Unmanned Aerial Vehicles(UAV)has intensified considerably thanks to the recent growth in the fields of advanced automatic control,artificial intelligence,and *** this paper,a Grey Wolf Optimization(GWO)algorithm is proposed and successfully applied to tune all effective parameters of Fast Terminal Sliding Mode(FTSM)controllers for a quadrotor UAV.A full control scheme is first established to deal with the coupled and underactuated dynamics of the *** for altitude,attitude,and position dynamics become separately designed and *** work around the repetitive and time-consuming trial-error-based procedures,all FTSM controllers’parameters for only altitude and attitude dynamics are systematically tuned thanks to the proposed GWO *** a hard and complex tuning task is formulated as a nonlinear optimization problem under operational *** performance and robustness of the GWO-based control strategy are compared to those based on homologous metaheuristics and standard terminal sliding mode *** simulations are carried out to show the effectiveness and superiority of the proposed GWO-tuned FTSM controllers for the altitude and attitude dynamics’stabilization and *** statistical analyses revealed that the GWO algorithm is more competitive with high performance in terms of fastness,non-premature convergence,and research exploration/exploitation capabilities.

关键词： Quadrotor cascade control fast terminal sliding mode control grey wolf optimizer nonparametric Friedman analysis

Control Strategy for a Quadrotor Based on a Memetic Shuffled Frog Leaping Algorithm

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Computers, Materials & Continua 2021年第6期67卷 4081-4100页

作者： Nour Ben Ammar Hegazy Rezk Soufiene Bouallègue Research Laboratory in Automatic Control(Lara) National Engineering School of Tunis(ENIT)University of Tunis EL MANARLe BelvédèreTunis1002Tunisia 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

This work presents a memetic Shuffled Frog Leaping Algorithm(SFLA)based tuning approach of an Integral Sliding Mode Controller(ISMC)for a quadrotor type of Unmanned Aerial Vehicles(UAV).Based on the Newton–Euler formalism,a nonlinear dynamic model of the studied quadrotor is firstly established for control design *** the main parameters of the ISMC design are the gains of the sliding surfaces and signum functions of the switching control law,which are usually selected by repetitive and time-consuming trials-errors based procedures,a constrained optimization problem is formulated for the systematically tuning of these unknown *** time-domain operating constraints,such an optimization-based tuning problem is effectively solved using the proposed SFLA metaheuristic with an empirical comparison to other evolutionary computation-and swarm intelligence-based algorithms such as the Crow Search Algorithm(CSA),Fractional Particle Swarm Optimization Memetic Algorithm(FPSOMA),Ant Bee Colony(ABC)and Harmony Search Algorithm(HSA).Numerical experiments are carried out for various sets of algorithms’parameters to achieve optimal gains of the sliding mode controllers for the altitude and attitude dynamics *** studies revealed that the SFLA is a competitive and easily implemented algorithm with high performance in terms of robustness and non-premature *** results verified that the proposed metaheuristicsbased approach is a promising alternative for the systematic tuning of the effective design parameters in the integral sliding mode control framework.

关键词： Quadrotor modeling integral sliding mode control gains tuning advanced metaheuristics memetic algorithms shuffled frog leaping algorithm

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

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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

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

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

What can Drosophila axonal development teach us about nerve regeneration?

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Neural Regeneration Research 2015年第12期10卷 1917-1918页

作者： Sofia J.araújo Institut de Biologia Molecular de Barcelona (IBMB-CSIC) Parc Cientific de Barcelona

Assembly,maintenance and repair of nervous systems rely on the precise coordination in the presentation of guidance signals and the correct reception and processing of these *** embryonic development,considerable progress has already been made in identifying the extracellular cues and the receptors mediating axonal guidance（araújo and Tear,2003）.

关键词： presentation precise correct

Airborne bioaerosols and their impact on human health

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Journal of Environmental Sciences 2018年第5期30卷 23-35页

作者： Ki-Hyun Kim Ehsanul Kabir Shamin ara Jahan Department of Civil and Environmental Engineering Hanyang UniversitySeoul 04763Republic of Korea Department of Farm Power&MachineryBangladesh Agricultural UniversityMymensinghBangladesh BRAC Clinic DhakaBangladesh

Bioaerosols consist of aerosols originated biologically such as metabolites, toxins, or fragments of microorganisms that are present ubiquitously in the environment. International interests in bioaerosols have increased rapidly to broaden the pool of knowledge on their identification,quantification, distribution, and health impacts（e.g., infectious and respiratory diseases,allergies, and cancer）. However, risk assessment of bioaerosols based on conventional culture methods has been hampered further by several factors such as：（1） the complexity of microorganisms or derivatives to be investigated;（2） the purpose, techniques, and locations of sampling; and（3） the lack of valid quantitative criteria（e.g., exposure standards and dose/effect relationships）. Although exposure to some microbes is considered to be beneficial for health,more research is needed to properly assess their potential health hazards including inter-individual susceptibility, interactions with non-biological agents, and many proven/unproven health effects（e.g., atopy and atopic diseases）.

关键词： Health effect Exposure Infectious diseases Respiratory diseases Cancer Guideline