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New prospects for computational hydraulics by leveraging high-performance heterogeneous computing techniques

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Journal of Hydrodynamics 2016年第6期28卷 977-985页

作者： Qiuhua LIANG luke SMITH Xilin XIA Hebei University of Engineering Handan 056038 China School of Civil Engineering and Geosciences Newcastle University Newcastle upon Tyne UK

In the last two decades, computational hydraulics has undergone a rapid development following the advancement of data acquisition and computing technologies. Using a finite-volume Godunov-type hydrodynamic model, this work demonstrates the promise of modern high-performance computing technology to achieve real-time flood modeling at a regional scale. The software is implemented for high-performance heterogeneous computing using the OpenCL programming framework, and developed to support simulations across multiple GPUs using a domain decomposition technique and across multiple systems through an efficient implementation of the Message Passing Interface （MPI） standard. The software is applied for a convective storm induced flood event in Newcastle upon Tyne, demonstrating high computational performance across a GPU cluster, and good agreement against crowd- sourced observations. Issues relating to data availability, complex urban topography and differences in drainage capacity affect results for a small number of areas.

关键词： computational hydraulics high-performance computing flood modeling shallow water equations shock-capttLring hydrodynamic model

How and why does photobiomodulation change brain activity?

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Neural Regeneration Research 2020年第12期15卷 2243-2244页

作者： John Mitrofanis luke AHenderson Department of Anatomy School of Medical SciencesUniversity of SydneySydneyAustralia

The concept that certain wavelengths of light can change regional brain activity as well as influencing the functional connectivity between different brain centers,is rather *** a concept goes beyond that of a function for light stimulating specialized retinal ganglion cells to entrain circadian rhythms but extends this to include light having a direct influence on all neurons to potentially influence a range of core higher-order brain *** this perspective,we explore how light may influence such core brain activities,together with why it should do so in the first place.

关键词： stimulating striking specialized

Maize and the maize weevil:advances and innovations in postharvest control of the pest

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Food Quality and Safety 2018年第3期2卷 145-152页

作者： luke Chinaru Nwosu Department of Crop and Soil Science Faculty of AgricultureUniversity of Port HarcourtP.M.B.5323Rivers StateNigeria

The review focused on recent advances and innovations on the use of maize varietal resistance and plant materials in the control of Sitophilus zeamais *** biological techniques for assessing the resistance of varieties of maize to postharvest infestation by *** were *** was suggested that routine analysis of plant species is particularly important to cope with the problem of resistance to synthetic insecticides in weevil *** the paper also revealed the important technical guidelines and scoring system for testing plant materials for insecticidal *** postharvest insect pest management strategy should form part of the overall crop husbandry for preserving the quality of the *** of resistant varieties is the best approach to overcoming the problems of synthetic insecticides in weevil ***,breeding maize crop to improve resistance against the maize weevil is associated with some technical *** limitations include lack of inter-specific cross-compatibility,methodological constraints,biotic variation,undesirable genetic linkages,and limited knowledge of genetic bases of *** screening of plant species for insecticidal activities,an untreated control and a reference insecticide whose efficacy in different agro-ecological zones is known should be designated and the plant material should be tested at economically justified *** review presented some advances and innovations on the use of maize resistance(including new formulae and scoring systems)in the control of weevil infestation and addressed maize quality and safety after pest-control *** will enhance reorientation of research focus and provide new impetus for the protection of stored maize against *** attack.

关键词： maize postharvest resistant varieties technical guides reorientation.

Assessment of bone charcoal dusts of six species of mammal for the postharvest control of Callosobruchus maculatus Fabricius(Coleoptera:Chrysomelidae)infestations of cowpea seeds:can the charcoal dust affect seed viability in laboratory and in field?

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Food Quality and Safety 2019年第4期3卷 279-287页

作者： luke Chinaru Nwosu Department of Crop and Soil Science University of Port HarcourtPort HarcourtRivers StateNigeria

Objectives:The possibility that bone charcoal dusts of some species of mammal will control the major insect pest of stored cowpea seeds and the implications on seed viability(after pest control process)were investigated in the laboratory at ambient temperature(30±3°C)and relative humidity(70±5%)and in *** and Methods:Standard entomological and agronomical techniques were ***:The results showed that at 1.0%w/w dosage,the bone charcoal dusts of Ovis aries and Bos taurus were more effective than permethrin standard insecticide in killing adult Callosobruchus maculatus *** cowpea seeds in *** taurus had a faster action speed than permethrin at 1.0%w/*** 1.5%w/w of dust,all the species of mammal investigated deterred oviposition considerably in *** females,whereas only the bone charcoal dusts of *** and Sus scrofa were comparable with permethrin in suppressing adult emergence and seed damage;*** only was comparable with permethrin in reducing larval *** charcoal dusts of *** and *** require chemical and olfactory analyses to know if they might have caused irritation to the insects and disrupted insect circadian rhythm,affecting behaviour and mating activities,*** bone charcoal dusts of the six species of mammal at a highest test dose of 1.5%w/w allowed high seed viability in both laboratory and ***:The study recommends the use of bone charcoal dusts of *** and *** at economical-and quality-favourable dose 1.5%w/w for managers seeking to control *** insect attacking cowpea seeds in *** transitive components of the bones,abrasion of the insect epicuticle lipid layer by the charcoal dust,and combustion-related toxic factors were responsible for the insecticidal activities of the bone charcoal dusts of the mammals.

关键词： bone charcoal dust mammal stored cowpea seed viability Callosobruchus maculatus

Coagulopathy reversal in intracerebral haemorrhage

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Stroke & Vascular Neurology 2020年第1期5卷 29-33页

作者： Alexander Jacob Sweidan Navneet Kaur Singh Joseph luke Conovaloff matthew Bower Leonid I Groysman Mohammad Shafie Wengui Yu Neurology University of California Irvine Medical CenterOrangeCaliforniaUSA Medicine University of California Irvine Medical CenterOrangeCaliforniaUSA

As intracerebral hemorrahge becomes more frequent as a result of an aging population with greater comorbidities,rapid identification and reversal of precipitators becomes increasingly *** aformentioned population will ever more likely be on some form of anticoagulant *** the mechanisms of these agents and means by which to reverse them early on is critical in managing the acute intracerebral hemorrhage.

关键词： likely mentioned reversal

Nonlinear analysis on electrical properties in a bended composite piezoelectric semiconductor beam

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Applied Mathematics and Mechanics(English Edition) 2023年第12期44卷 2039-2056页

作者： luke ZHAO Feng JIN Zhushan SHAO Wenjun WANG School of Science Xi’an University of Architecture and TechnologyXi’an 710055China School of Aerospace Xi’an Jiaotong UniversityXi’an 710049China MOE Key Laboratory for Multifunctional Materials and Structures School of AerospaceXi’an Jiaotong UniversityXi’an 710049China School of Science Lanzhou University of TechnologyLanzhou 730050China

In this paper,the interactions between the transverse loads and the electrical field quantities are investigated based on the nonlinear constitutive *** considering a composite beam consisting of a piezoelectric semiconductor and elastic layers,the nonlinear model is established based on the phenomenological theory and Euler’s beam ***,an iteration procedure based on the differential quadrature method(DQM)is developed to solve the nonlinear governing *** analysis,the convergence and correctness are *** is found that the convergence of the proposed iteration is ***,the transverse pressure induced electrical field quantities are investigated in *** the calculated results,it can be found that the consideration of nonlinear constitutive relation is necessary for a beam undergoing a large *** with the linear results,the consideration of the nonlinear constitutive relation breaks the symmetry for the electric potential,the electric field,and the perturbation carrier density,and has little influence on the electric ***,the non-uniform pressures are *** results show that the distributions of the electric field quantities are sensitively *** indicates that the electrical properties can be manipulated with the design of different transverse *** conclusions in this paper could be the guidance on designing and manufacturing electronic devices accurately.

关键词： nonlinear constitutive relation electrical property composite piezoelectric semiconductor beam differential quadrature method(DQM) iteration

Transient analysis on surface heated piezoelectric semiconductor plate lying on rigid substrate

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Applied Mathematics and Mechanics(English Edition) 2022年第12期43卷 1841-1856页

作者： luke ZHAO Sen GU Yaqin SONG Feng JIN State Key Laboratory for Strength and Vibration of Mechanical Structures School of Aerospace EngineeringXi'an Jiaotong UniversityXi'an 710049China

Based on the thermo-electro-elastic coupling theory,the mathematical model for a surface heated piezoelectric semiconductor(PS)plate is developed in the time *** the direct and inverse Laplace transformations to the established model,the mechanical and electrical responses are *** comparison between the analytical solution and the finite element method(FEM)is conducted,which illustrates the validity of the *** calculated results show that the maximum values of the mechanical and electrical fields appear at the heating ***,the perturbation carriers tend to concentrate in the zone near the heating surface under the given boundary *** can also be observed that the heating induced elastic wave leads to jumps for the electric potential and perturbation carrier density at the *** the thermal relaxation time is introduced,all the field quantities become smaller because of the thermal lagging ***,it can be found that the thermal relaxation time can describe the smooth variation at the jump ***,for a plate with P-N junction,the effect of the interface position on the electrical response is *** effects of the initial carrier density on the electrical properties are discussed in *** conclusions in this article can be the guidance for the design of PS devices serving in thermal environment.

关键词： thermo-electro-elastic coupling piezoelectric semiconductor(PS) surface heating transient analysis

Prostaglandin E1 administration post liver transplantation and renal outcomes:A retrospective single center experience

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World Journal of Transplantation 2024年第4期14卷 101-109页

作者： Vinay Jahagirdar Mohamed Ahmed Ifrah Fatima Hassam Ali Laura Alba John H Helzberg Lee S Cummings matthew Wilkinson Jameson Forster Alisa Likhitsup Department of Internal Medicine Saint Luke’s Health System of Kansas City and the University of Missouri-Kansas CityKansas CityMO 64111United States Department of Gastroenterology and Hepatology East Carolina University Brody School of MedicineGreenvilleNC 27834United States Division of Internal Medicine Department of Gastroenterology and HepatologySaint Luke’s Health System of Kansas City and University of Missouri-Kansas CityKansas CityMO 64111United States Department of Surgery University of Missouri-Kansas City and Transplant SurgerySaint Luke’s Hospital of Kansas CityKansas CityMO 64111United States Department of Gastroenterology and Hepatology University of MichiganAnn ArborMI 48109United States

BACKGROUND Prostaglandin E1(PGE1),or alprostadil,is a potent vasodilator that improves hepatic blood flow and reduces ischemia-reperfusion injury post-liver transplantation(LT).However,the benefits of PGE1 on renal function after LT have not yet been well *** To assess the impact of PGE1 administration on renal function in patients who underwent liver or liver-kidney *** This retrospective study included all patients who underwent liver or liverkidney transplant at our institution from January,2011 to December,*** were classified based on whether they received ***1 was administered post-LT to those with transaminases>1000 U/L in the immediate postoperative ***,post-LT treatments and/or complications,renal function,and survival were *** logistic regression analysis was performed,and a two-tailed P value<0.05 was considered statistically *** A total of 145 patients underwent LT,with 44(30%)receiving *** patient characteristics were comparable,except the PGE1 group had significantly higher aspartate aminotransferase(AST)(1961.9 U/L±1862.3 U/L vs 878 U/L±741.4 U/L,P=0.000),alanine aminotransferase(1070.6 U/L±895 U/L vs 547.7 U/L±410 U/L,P=0.000),international normalized ratio on post-LT day 1(2±0.74 vs 1.8±0.4,P=0.03),a longer intensive care unit stay(8.1 days±11.8 days vs 3.8 days±4.6 days,P=0.003),more vasopressor use(55.53 hours±111 hours vs 16.33 hours±26.3 hours,P=0.002),and higher immediate postoperative complications(18.6%vs 4.9%,P=0.04).The PGE1 group also had a significantly higher 90-day readmission rate(29.6%vs 13.1%,P=0.02)and lower 1-year liver graft survival(87.5%vs 98.9%,P=0.005).However,30-day readmission(31.6%vs 27.4%,P=0.64),LT complications(hepatic artery thrombosis,biliary complications,rejection of liver graft,cardiomyopathy),1-year patient survival(96.9%vs 97.8%,P=0.77),overall liver graft survival,and overall patient survival were similar between t

关键词： Liver transplantation Alprostadil Protective agents Transplant Prostaglandin E1

基于移动机器人的拣选系统货架动态储位分配研究

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系统科学与数学 2024年第3期44卷 780-791页

作者：袁瑞萍邹顺洁潘路可李俊韬马西锋北京物资学院信息学院北京101149 智能物流系统北京市重点实验室北京101149 河南财经政法大学计算机与信息工程学院郑州450046

为了提高基于移动机器人的拣选系统拣货效率,更好地满足客户动态需求和订单时效要求,提出了考虑货架后续需求频次、需求紧迫程度以及拥堵因素的货架动态储位分配策略,构建了最小化货架搬运距离的动态储位分配模型,并设计了启发式算法进... 详细信息

为了提高基于移动机器人的拣选系统拣货效率,更好地满足客户动态需求和订单时效要求,提出了考虑货架后续需求频次、需求紧迫程度以及拥堵因素的货架动态储位分配策略,构建了最小化货架搬运距离的动态储位分配模型,并设计了启发式算法进行模型求解.首先,基于货架需求紧迫程度,构造贪婪算法生成动态货架储位分配的初始解;然后,基于货架在后续批次订单的需求频次及通道间负载均衡,采用邻域搜索算法进行动态货架储位优化.最后,通过与其他静态和动态储位分配方法对比,验证文章提出的模型和算法的有效性.

关键词：基于移动机器人的拣选系统智能仓储动态储位分配启发式算法