检索结果-南通市图书馆

New Modified Controlled Bat Algorithm for Numerical Optimization problem

Computers, Materials & Continua 2022年第2期70卷 2241-2259页

作者： Waqas Haider Bangyal Abdul Hameed Jamil Ahmad Kashif Nisar Muhammad Reazul Haque Ag.Asri Ag.Ibrahim joel J.p.C.Rodrigues M.Adil Khan Danda B.Rawat Richard Etengu Department of Computing and Technology Iqra University IslamabadPakistan Computer Science Kohat University of Science and Technology(KUST)KohatPakistan Faculty of Computing and Informatics University Malaysia SabahJalan UMSKota Kinabalu88400SabahMalaysia Faculty of Computing&Informatics Multimedia UniversityPersiaran MultimediaCyberjaya63100SelangorMalaysia Federal University of piauí(UFpI) Teresina-PLBrazil Instituto de Telecomunicacoes Covilh?6201-001Portugal Department Computer Science and Technology Chang’an UniversityXi’anChina Department of Electrical Engineering and Computer Science Howard UniversityWashingtonDCUSA

Bat algorithm(BA)is an eminent meta-heuristic algorithm that has been widely used to solve diverse kinds of optimization *** leverages the echolocation feature of bats produced by imitating the bats’searching *** faces premature convergence due to its local search *** of using the standard uniform walk,the Torus walk is viewed as a promising alternative to improve the local search *** this work,we proposed an improved variation of BA by applying torus walk to improve diversity and *** *** Computerized Bat Algorithm(MCBA)approach has been examined for fifteen well-known benchmark test *** finding of our technique shows promising performance as compared to the standard pSO and standard *** proposed MCBA,BpA,Standard pSO,and Standard BA have been examined for well-known benchmark test problems and training of the artificial neural network(ANN).We have performed experiments using eight benchmark datasets applied from the worldwide famous machine-learning(ML)repository of *** results have shown that the training of an ANN with MCBA-NN algorithm tops the list considering exactness,with more superiority compared to the traditional *** MCBA-NN algorithm may be used effectively for data classification and statistical problems in the future.

关键词： Bat algorithm MCBA ANN ML Torus walk

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Unlocking antitumor immunity with adenosine receptorblockers

引用

Cancer Drug Resistance 2023年第4期6卷 748-767页

作者： Victoria A.Remley joel Linden Todd W.Bauer Julien Dimastromatteo Department of Surgery University of VirginiaCharlottesvilleVA 22903USA Adovate CharlottesvilleVA 22901USA University of Virginia Comprehensive Cancer Center CharlottesvilleVA 22903USA

Tumors survive by creating a tumor microenvironment(TME)that suppresses antitumor *** TME suppresses the immune system by limiting antigen presentation,inhibiting lymphocyte and natural killer(NK)cell activation,and facilitating T cell *** inhibitors like anti-pD-1 and anti-CTLA4 are immunostimulatory antibodies,and their blockade extends the survival of some but not all cancer *** adenosine triphosphate(ATp)is abundant in inflamed tumors,and its metabolite,adenosine(ADO),is a driver of immunosuppression mediated by adenosine A2A receptors(A2AR)and adenosine A2B receptors(A2BR)found on tumor-associated lymphoid and myeloid *** review will focus on adenosine as a key checkpoint inhibitor-like immunosuppressive player in the TME and how reducing adenosine production or blocking A2AR and A2BR enhances antitumor immunity.

关键词： Immunotherapy adenosine adenosine receptors adenosine A2A receptors(A2AR) adenosine A2B receptors(A2BR) tumor cells immune cells tumor microenvironment

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

prospects for Tin-Containing Halide perovskite photovoltaics

引用

precision Chemistry 2023年第2期1卷 69-82页

作者： Shuaifeng Hu joel A.Smith Henry J.Snaith Atsushi Wakamiya the Department of Chemistry Graduate School of Science of Kyoto University in Japan the Department of physics University of OxfordOxfordUK the Institute for Chemical Research of Kyoto University in Japan

Tin-containing metal halide perovskites have enormous potential as photovoltaics,both in narrow band gap mixed tin−lead materials for all-perovskite tandems and for lead-free *** introduction of Sn(II),however,has significant effects on the solution chemistry,crystallization,defect states,and other material properties in halide *** this perspective,we summarize the main hurdles for tin-containing perovskites and highlight successful attempts made by the community to overcome *** discuss important research directions for the development of these materials and propose some approaches to achieve a unified understanding of Sn *** particularly focus on the discussion of charge carrier dynamics and nonradiative losses at the interfaces between perovskite and charge extraction layers in p-i-n *** hope these insights will aid the community to accelerate the development of high-performance,stable single-junction tincontaining perovskite solar cells and all-perovskite tandems.

关键词： solar cell perovskite tin crystallization surface chemistry defect passivation carrier dynamic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

ON THE ALGORITHMIC COMpLEXITY OF STATIC STRUCTURES

引用

Journal of Systems Science & Complexity 2010年第6期23卷 1037-1053页

作者： joel RATSABY J. CHASKALOVIC joel RATSABY Dept. of Electrical and Electronics Engineering Ariel University Center of Samaria Ariel Israel Department of Mathematics Ariel University Center of Samaria Ariel Israel and IJLRDA University Pierre and Marie Curie-Paris VI France.

This paper provides a first indication that this is true for a system comprised of a static structure described by hyperbolic partial differential equations and is subjected to an external random input force. The system deforms the randomness of an input force sequence in proportion to its algorithmic complexity. The authors demonstrate this by numerical analysis of a one-dimensional vibrating elastic solid (the system) on which we apply a maximally-random force sequence (input). The level of complexity of the system is controlled via external parameters. The output response is the field of displacements observed at several positions on the body. The algorithmic complexity and stochasticity of the resulting output displacement sequence is measured and compared against the complexity of the system. The results show that the higher the system complexity, the more random-deficient the output sequence.

关键词：算法复杂性静态结构作者双曲型偏微分方程随机输入输出序列输出响应位移测量

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Controlled generation of picosecond-pulsed higher-order poincaré sphere beams from an ytterbium-doped multicore fiber amplifier

引用

photonics Research 2023年第2期11卷 181-188页

作者： KUNHAO JI DI LIN IAN A. DAVIDSON SIYI WANG joel CARpENTER YOSHIMICHI AMMA YONGMIN JUNG MASSIMILIANO GUASONI DAVID J. RICHARDSON Optoelectronics Research Centre University of SouthamptonSouthampton SO171BJUK Institute of Advanced photonics Technology School of Information EngineeringGuangdong University of TechnologyGuangzhou 510006China Guangdong provincial Key Laboratory of photonics Information Technology Guangdong University of TechnologyGuangzhou 510006China School of Information Technology and Electrical Engineering The University of QueenslandBrisbaneQLD 4072Australia Fujikura Ltd. Chiba 285-8550Japan

Higher-order poincarésphere(HOpS) beams with spatially variable polarization and phase distributions are opening up a host of unique applications in areas ranging from optical communication to ***, the flexible generation of these beams with high peak power from compact laser systems remains a challenge. Here, we demonstrate the controlled generation of HOpS beams based on coherent beam combination from an Yb-doped multicore fiber(MCF) amplifier. Using a spatial light modulator to adaptively adjust the wavefront and polarization of the signals seeded into the individual cores of the MCF various structured beams(including cylindrical vector beams and first-and second-order vortex beams) were generated with peak powers up to 14 k W for ~92 ps pulses.

关键词： amplifier polarization fiber

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The modifying influence of HLA classⅡDQB1^(*)06:02 on the Streptococcus and clinical phenotype correlation among anti-Ro+mothers of children with neonatal lupus

引用

Genes & Diseases 2023年第4期10卷 1169-1171页

作者： Robert M.Clancy Carla J.Guthridge Miranda C.Marion joel Guthridge Timothy D.Howard peter M.Izmirly Mala Masson Jill p.Buyon Judith A.James Carl D.Langefeld Department of Medicine Division of RheumatologyNYU Grossman School of MedicineNew YorkNY 10016USA Arthritis and Clinical Immunology Oklahoma Medical Research FoundationOklahoma CityOK 73104USA Department of Biostatistics and Data Science Wake Forest School of MedicineWinstone SalemNC 27101USA Center for precision Medicine Wake Forest School of MedicineWinstoneSalemNC 27101USA Department of Biochemistry Wake Forest School of MedicineWinstoneSalemNC 27101USA

The genus Streptococcus,a gram-positive bacterium,con-tains species associated with immune activation at morbid outcomes,including scarlet fever,endocarditis,meningitis,and rheumatic *** both stool and saliva,there is a pos-itive correlation between Streptococcus abundance and Sjogren’s syndrome(SS)and systemic lupus erythematosus(SLE).

关键词： lupus mother fever Streptococcus

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Low-Cost 4-20 mA Loop Calibrator

引用

Journal of Flow Control, Measurement & Visualization 2023年第3期11卷 49-63页

作者： joel Arumun Emmanuel Eronu Department of Electrical/Electronics Engineering University of Abuja Abuja Nigeria

Instrument calibration is vital to a successful control system because signal inputs to the system controllers come from such instruments. This paper presents a method for actualizing a standard low-cost loop calibrator for the famous 4-20 mA electrical signaling scheme. The loop calibrator generates a linear current signal from 4 to 20 mA over a 250 ? typical process instrument load for calibration. The realization of the loop calibrator relies on a voltage-to-current converter to build a constant current source. The voltage controlled constant current source is built from discrete components and an op-amp to keep the cost low. Results from simulations and the prototype demonstrate the performance of the 4-20 mA loop calibrator which utilizes a greatly reduced number of components. The cost of these components is approximately 34% of the least expensive calibrator sampled, though other production costs are not included. This conclusion reinforces the fact that loop calibrators can be cheaper.

关键词： Instruments Calibration 4-20 mA Standard Loop Calibrator

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bacterial microcosms obey Taylor’s law:effects of abiotic and biotic stress and genetics on mean and variance of population density

引用

Ecological processes 2012年第1期1卷 77-82页

作者： Oliver Kaltz patricia Escobar-páramo Michael E Hochberg joel E Cohen Institut des Sciences de l’Evolution UMR CNRS-UM2-IRD5554CC 065UniversitéMontpellier 2Place Eugène BataillonMontpellier Cedex 0534095France Centro Internacional de Física(CIF) Biotechnology GroupUniversidad Nacional de ColombiaCra 30 N°45-03BogotáDCColombia Laboratory of populations Rockefeller and Columbia Universities1230 York AvenueBox 20New YorkNY10065-6399USA

Introduction:According to the empirical regularity called Taylor’s law,the variance of population density in samples of populations is a power of the mean population *** exponent is often between 1 and *** experiments investigated how genetics,evolution,and environment shape Taylor’s ***:Genetically different strains(wild type and hypermutator)of the bacterium pseudomonas fluorescens evolved and were assayed under different environmental conditions(with and without antibiotic rifampicin and bacteriophage SBW252,separately and in combination).Results:Experimental treatments altered the exponent b,but not the power law form,of the relation between variance and mean population *** populations treated only with rifampicin had a narrow range of mean population densities and exponent b=*** exposed to rifampicin plus phage had b=*** ancestral,control,and phage-exposed populations,mean abundance varied widely and b was not significantly different from *** factors(mutation rate,selection)and ecological factors(abiotic,biotic)jointly influenced ***:Taylor’s power law relationship accurately and robustly described variance as a function of mean population density,with overall exponent b=*** and other experiments with different factors acting on bacterial population size support the relevance of models that predict‘universal’patterns of fluctuation scaling.

关键词： Taylor’s law pseudomonas fluorescens rifampicin bacteriophage genetics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Design of Human Adaptive Mechatronics Controller for Upper Limb Motion Intention prediction

引用

Computers, Materials & Continua 2022年第4期71卷 1171-1188页

作者： R.Joshua Samuel Raj J.prince Antony joel Salem Alelyani Mohammed Saleh Alsaqer C.Anand Deva Durai Department of Information Science&Engineering CMR Institute of TechnologyBengaluruIndia Department of Mechatronics Engineering Rajas Engineering CollegeTirunelveliIndia Center for Artificial Intelligence King Khalid UniversityAbhaKingdom of Saudi Arabia College of Computer Science King Khalid UniversityAbhaKingdom of Saudi Arabia

Human Adaptive Mechatronics(HAM)includes human and computer system in a closed *** person with disabilities,normally carry out their daily routines with some assistance to move their *** the short fall of human care takers,mechatronics devices are used with the likes of exoskeleton and exosuits to assist *** rehabilitation and occupational therapy equipments utilize the electromyography(EMG)signals to measure the muscle activity *** paper focuses on optimizing the HAM model in prediction of intended motion of upper limb with high accuracy and to increase the response time of the *** characteristics extraction from EMG signal and prediction of optimal controller parameters are *** and frequency based approach of EMG signal are considered for feature *** models used for estimating motion and muscle parameters from EMG signal for carrying out limb movement predictions are *** on the extracted features,optimal parameters are selected by Modified Lion Optimization(MLO)for controlling the HAM ***,supervised machine learning makes predictions at different points in time for individual sensing using Support Vector Neural Network(SVNN).This model is also evaluated based on optimal parameters of motion estimation and the accuracy level along with different optimization models for various upper limb *** proposed model of human adaptive controller predicts the limb movement by 96%accuracy.

关键词： Exoskeleton electromyography(emg) human adaptive mechatronics occupational therapy motion prediction machine learning

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insights into genetic variation and demographic history of sharpnose rays:examinations of three species of Telatrygon(Elasmobranchii,Dasyatidae)from the Indo-West pacific

引用

Integrative Zoology 2022年第6期17卷 1063-1077页

作者： Jiwei QI Fanglei SHI Baowei ZHANG Xiao CHEN Jie XING Keisuke FURUMITSU joel B.CORUSH Atsuko YAMAGUCHI Jie ZHANG Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijingChina School of Life Science Anhui UniversityHefeiAnhuiChina College of Marine Sciences South China Agricultural UniversityGuangzhouChina East China Sea Centre of Standard and Metrology SOAShanghaiChina Faculty of Fisheries Nagasaki UniversityNagasakiJapan Illinois Natural History Survey University of Illinois Champaign-UrbanaChampaignIllinoisUSA State Key Laboratory of Marine Resource Utilization in South China Sea Hainan UniversityHaikouChina

Coastal and demersal chondrichthyans(sharks,rays,and skates)are expected to exhibit high levels of genetic differentiation in areas of complex *** genetic studies investigating the extent to which demographic history shapes the genetic structure of theseﬁshes are ***,we combined mitochondrial DNA(Cytb and ND2)and 8 nuclear microsatellite loci from 244 individuals to examine the population genetic structure and demographic history of the 3 Indo-West paciﬁc species of sharpnose rays(Telatrygon zugei,Telatrygon biasa,and Trygon crozieri).High levels of genetic variation both within and between species were identiﬁ*** analysis partitioned haplotypes into 2 lineages supporting divergence of *** from *** and *** during the ***,microsatellite-based clustering analyses identiﬁed 4 genetic groups(*** from Japan,*** from coastal China,*** from Gulf of Thailand,and *** from the Andaman Sea).Measurements of genetic differentiation also support these 4 ***,pleistocene demographic expansions were examined in all genetic *** climate oscillations and current hydrologic cycles in the Indo-West paciﬁc appear to coincide with the hypothesis regarding speciation and the observed demographic history trends of the sharpnose *** the species group has,until recently,been thought to be one species,these results are critical for deﬁning management units and guiding conservation efforts to preserve stingray biodiversity.

关键词： conservation biodiversity of stingray demographic history genetic variation Indo-West paciﬁc Telatrygon

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：