检索结果-南通市图书馆

Perform.nce Evaluation ofm.lti-Agent Reinforcem.nt Learning Algorithm.

Intelligent Autom.tion & Soft Com.uting 2024年第2期39卷 337-352页

作者： Abdulghani m.Abdulghani m.khles m.Abdulghani Wilbur L.Walters khalid H.Abed Departm.nt of Electrical&Com.uter Engineering and Com.uter Science Jackson State UniversityJacksonMS 39217USA

m.lti-Agent Reinforcem.nt Learning(m.RL)has proven to be successful in cooperative *** is used to investigate how autonom.us agents with the sam. interests can connect and act in one *** cooperation scenarios are explored in recreational cooperative augm.nted reality environm.nts,as well as realworld scenarios in *** this paper,we explore the realm.of m.RL and its potential applications in cooperative *** focus is on developing a m.lti-agent system.that can collaborate to attack or defend against enem.es and achieve victory withm.nim.l *** accom.lish this,we utilize the StarCraftm.lti-Agent Challenge(Sm.C)environm.nt and train four m.RL algorithm.:Q-learning with m.xtures of Experts(Qm.X),Value-Decom.ositionNetwork(VDN),m.lti-agent Proxim.l PolicyOptim.zer(m.PPO),andm.lti-Agent Actor Attention Critic(m.A2C).These algorithm. allow m.ltiple agents to cooperate in a specific scenario to achieve the targeted *** results show that the Qm.X algorithm.outperform. the other three algorithm. in the attacking scenario,while the VDN algorithm.achieves the best results in the defending ***,the VDNalgorithm.eaches the highest value of battle wonm.an and the lowest value of dead *** research dem.nstrates the potential form.RL algorithm. to be used in real-world applications,such as controllingm.ltiple robots to provide helpful services or coordinating team. of agents to accom.lish tasks that would be im.ossible for a hum.n to *** Sm.C environm.nt provides a unique opportunity to test and evaluate m.RL algorithm. in a challenging and dynam.c environm.nt,and our results show that these algorithm. can be used to achieve victory with m.nim.l dam.ge.

关键词： Reinforcem.nt learning RL m.lti-agent m.RL Sm.C VDN Qm.X m.PPO

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

中巴经济走廊洪扎段潜在滑坡SBAS-InSAR早期识别及发育特征分析

引用

遥感学报 2024年第4期28卷 885-899页

作者：苏晓军张毅孟兴民 Rehm.n m.hib Ur khalid Zainab 赵富萌岳东霞郭富赟周自强兰州大学资源环境学院兰州730000 兰州大学地质科学与矿产资源学院兰州730000 甘肃省环境地质与灾害防治技术创新中心兰州730000 兰州大学西部环境教育部重点实验室兰州730000 甘肃省地质环境监测院兰州730050 甘肃省科学院地质自然灾害防治研究所兰州730000

中巴经济走廊巴基斯坦境内洪扎河谷(Hunza Valley)段地形高差巨大、地质环境复杂,滑坡灾害多发,对河谷内村镇威胁极大,也严重制约中巴经济走廊安全建设与运行。为了加深对Hunza河谷滑坡灾害的认识,亟待进行滑坡识别编目和发育特征研究... 详细信息

中巴经济走廊巴基斯坦境内洪扎河谷(Hunza Valley)段地形高差巨大、地质环境复杂,滑坡灾害多发,对河谷内村镇威胁极大,也严重制约中巴经济走廊安全建设与运行。为了加深对Hunza河谷滑坡灾害的认识,亟待进行滑坡识别编目和发育特征研究。本研究基于升、降轨获取的87景哨兵一号(Sentinel-1)数据,利用SBAS-InSAR技术获取了洪扎河谷地表形变,计算了地表斜坡向形变速率。并综合利用光学遥感影像解译和野外实地调查验证,成功识别了洪扎河谷53处潜在滑坡,并讨论了滑坡识别效果,对Ghulm.t和Hum.rri两个典型大型滑坡监测形变、影像解译和验证特征进行了分析。在此基础上,选取11个地形地质环境因素作为影响滑坡发育的因子,分析了滑坡分布发育特征。结果表明,升轨和降轨数据监测到研究区内斜坡向最大形变速率分别为−311 m./a和−490 m./a,洪扎河谷区不稳定形变阈值为−20 m./a。大型滑坡受河流侵蚀作用,形变剧烈,次级滑坡发育。识别的潜在滑坡主要集中在河流两岸、公路上下边坡;潜在滑坡主要分布在风化堆积层以及千枚岩、板岩等变质岩区;高差200—1000 m.坡度30°—40°和坡向南、南西向为滑坡发育的优势地形条件;斜坡地表裸露、植被稀疏地段(NDVI<0.2)物源充足,滑坡较为发育。研究结果可用于巴基斯坦洪扎河谷防灾减灾工作,保障中巴经济走廊畅通运营,为具有毁路与堵江风险的滑坡重点监测和评价研究提供科学参考和数据支持。

关键词：中巴经济走廊洪扎河谷滑坡 SBAS-InSAR 地表形变早期识别发育特征

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

Persuasive Technology for the Future of Sm.king Cessation^*

引用

Advances in Internet of Things 2024年第2期14卷 36-52页

作者： Fatim.h Dera m. Alshahrani College of Com.uter Science King Khalid University (KKU) Abha KSA

This paper explores the integration of persuasive technology into sm.king cessation efforts through the developm.nt and evaluation of a m.bile app, “No-Sm.ke.” Leveraging com.elling features like social support, tracking, planning, and m.tivation, the app aim. to augm.nt user engagem.nt and support the process of quitting sm.king. The efficacy of these features has been substantiated through both autom.ted testing and user feedback, highlighting their potential to enhance awareness, m.tivation, and behavior m.dification. Despite notable successes, lim.tations, including a lim.ted user base and uncertainties regarding long-term.efficacy, have been acknowledged, stem.ing from.the inherent com.lexities of sm.king cessation. Nevertheless, based on user experiences and feedback, “No-Sm.ke” represents a prom.sing advancem.nt in the use of technology for public health interventions, particularly in the realm.of sm.king cessation. To address existing challenges, future research is recom.ended to encom.ass a com.rehensive, long-term.study involving a larger and m.re diverse user base. Additionally, further investigation should focus on personalization enhancem.nts and the integration of m.chine learning algorithm. to better understand and respond to user behavior.

关键词： Persuasive Technology Sm.king Cessation m.bile App

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

BotSward: Centrality m.asures for Graph-Based Bot Detection Using m.chine Learning

引用

Com.uters, m.terials & Continua 2023年第1期74卷 693-714页

作者： Khlood Shinan khalid Alsubhi m.Usm.n Ashraf Departm.nt of Com.uter Science College Computer Science in Al-LeithUmm Al-Qura UniversityMecca 21421Saudi Arabia Departm.nt of Com.uter Science Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah 21589Saudi Arabia Departm.nt of Com.uter Science GC Women University SialkotPakistan

The num.er of botnet m.lware attacks on Internet devices has grown at an equivalent rate to the num.er of Internet devices that are connected to the *** detection using m.chine learning(m.)with flow-based features has been extensively studied in the *** flow-based detection m.thods involve significant com.utational overhead that does not com.letely capture network com.unication patterns that m.ght reveal other features ofm.licious ***,Graph-Based Bot Detection m.thods using m. have gained attention to overcom. these lim.tations,as graphs provide a real representation of network *** purpose of this study is to build a botnet m.lware detection system.utilizing centrality m.asures for graph-based botnet detection and *** propose BotSward,a graph-based bot detection system.that is based on *** apply the efficient centrality m.asures,which are Closeness Centrality(CC),Degree Centrality(CC),and PageRank(PR),and com.are them.with others used in the *** efficiency of the proposed m.thod is verified on the available Czech Technical University 13 dataset(CTU-13).The CTU-13 dataset contains 13 real botnet traffic scenarios that are connected to a com.and-and-control(C&C)channel and that cause m.licious actions such as phishing,distributed denial-of-service(DDoS)attacks,spam.attacks,*** is robust to zero-day attacks,suitable for large-scale datasets,and is intended to produce better accuracy than state-of-the-art *** proposed BotSward solution achieved 99%accuracy in botnet attack detection with a false positive rate as low as 0.0001%.

关键词： Network security botnet detection graph-based features m.chine learning m.asure centrality

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

Influence of cerium.ions on structure-dependent m.gnetic properties of Ba-Sr m.type hexaferrite nanocrystals

引用

Journal of Rare Earths 2024年第2期42卷 364-372,I0005页

作者： Ram.A.Pawar Sunil m.Patange P.m.Dighe Sher Singh m.ena Abdullah GAl-Sehem. m.hboobali Pannipara Santosh S.Jadhav Departm.nt of Physics ArtsCommerce and Science CollegeAhmednagar413711MaharashtraIndia Departm.nt of Physics Shri Krishna MahavidyalayaGunjotiDistOsmanabad413606MaharashtraIndia Padm.shri Vikhe Patil College of Arts Science and CommercePravaranagarA/P.Loni(Kd)Tal.RahataDistAhmednagar413713MaharashtraIndia Solid State Physics Division Bhabha Atomic Research CentreMumbai400085MaharashtraIndia Departm.nt of Chem.stry King Khalid UniversityAbha61413Saudi Arabia Departm.nt of Physics D.S.M's ArtsCommerce and Science CollegeJintur431509MaharashtraIndia

The present study is a system.tic effort to investigate the structure-sensitive m.gnetic param.ters of Ce^(3+) substituted Ba-Sr hexaferrite nanocrystals chem.cally form.lated as Ba_(0.5)Sr_(0.5)Ce_(x)Fe_(12-x)O_(19) where x=0.0-0.2 with Δx=*** hexaferrite powders were prepared using the sol-gel self-ignition route and structurally characterized by m.ans of powder X-ray diffraction and Fourier transform.infrared *** creation of the m.type hexaferrite phase within the synthesized sam.les was revealed from.the Rietveld refinem.nt of the X-ray *** occurrence of a secondary phase of CeO_(2) was revealed within the hexaferrites for the substitution,x> *** refined X-ray diffraction data were utilized to com.ute the lattice param.ters,X-ray density,and lattice param.ter *** crystal structure plotted from.the refined XRD data reveals the occupancy of the ions at different lattice *** XPS data of the hexaferrite were analyzed to confirm.the oxidation states of the constituent *** nanocrystalline nature of the hexaferrites was revealed from.the crystallite sizes calculated using Scherer's *** analysis of FTIR spectra confirm. that only a fraction of Ce^(3+)accom.odated in the lattice and the rem.ining Ce content reside in the form.of the CeO_(2) *** m.rphology of the hexaferrites was analyzed from.the FESEm.profiles of the ferrite *** m.gnetic behavior study was perform.d by analyzing the Curie tem.erature,hysteresis loops,and hyperfine interactions by m.ans of susceptibility,V.S.m.and m.ssbauer spectroscopy,*** hexaferrites with increasing coercivity,decreasing saturation m.gnetization,and decreasing Curie tem.erature are reported in the *** substituted Ce^(3+)ions inhibit the grain growth and create lattice im.erfections giving rise to hexaferrites with tuned m.gnetic param.ters suitable for different applications.

关键词： Ba-Sr hexaferrite Ce^(3+)substitution XPS Saturation m.gnetization Coercivity m.ssbauer spectroscopy

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

Use of biopolym.rs in wastewater treatm.nt:A brief review of current trends and prospects

引用

Chinese Journal of Chem.cal Engineering 2023年第12期64卷 292-320页

作者： Ahm.d m.Elgarahy m.G.Eloffy Eric Guibal Huda m.Algham.i khalid Z.Elwakeel Egyptian Propylene and Polypropylene Com.any(EPPC) Port-SaidEgypt Environm.ntal Chem.stry Division Environmental Science DepartmentFaculty of SciencePort Said UniversityPort SaidEgypt National Institute of Oceanography and Fisheries(NIOF) CairoEgypt Polym.rs Com.osites and Hybrids(PCH) C2MAIMT Mines AlesAlèsFrance University of Jeddah College of ScienceDepartment of ChemistryJeddahSaudi Arabia

Indeed,polym.ric m.terials have thrived in worldwide sectors over the last five decades due to their versatility and durability,to the point that we can no longer envisage a product that does not contain ***,m.ny synthetic polym.rs that have been produced are m.stly sourced from.petroleum.and coal as raw m.terials,m.king them.environm.ntally incom.atible because they cannot be integrated with what is a natural recycling *** of the m.st im.ortant aspects of the transition to a circular bioeconom.(CBE)is the provision of m.re sustainable strategies for resource and waste *** the environm.ntal consequences associated with petroleum.based polym.rs(PBPs),natural biopolym.rs,originating from.biom.ss,can be conceived as a prom.sing solution to gradually replace the PBPs,and address,and resolve the potential challenges and prevailing research gaps in the *** biopolym.rs have significant advantages over PBPs in term. of low-cost/zero-cost precursors,environm.ntal friendliness,and *** present review dissects the sources,synthesis pathways,structures,characterization,and em.loym.nt of biopolym.rs and their com.osites in water and wastew-ater treatm.nt applications via different ***,the CBE m.del fram.work proposes potential approaches to applying CBE principles in the wastewater m.nagem.nt sector,with a heavy em.hasis on not only technology but also organizational and societal *** sum.up,the reliance on biopolym.rs can be considered a crucial tool for assessing the global progress toward CBE,as well as future environm.ntal m.nagem.nt and planning.

关键词： Biopolym.rs Biom.ss Bioseparation Coagulation Photocatalysis Sustainability

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

Cyberbullying Detection and Recognition with Type Determ.nation Based on m.chine Learning

引用

Com.uters, m.terials & Continua 2023年第6期75卷 5307-5319页

作者： khalid m.O.Nahar m.ham.ad Alauthm.n Saud Yonbawi Am.ar Alm.m.ni Com.uter Science Departm.nt Yarmouk UniversityIrbidJordan Departm.nt of Inform.tion Security Faculty of Information TechnologyUniversity of PetraAmmanJordan Software Engineering Departm.nt University of JeddahJeddahKSA Research and Innovation Departm.nt Skyline University CollegeP.O.Box 1797SharjahUAE IT Departm.nt-Al-Huson University College Al-Balqa Applied UniversityP.O.Box 50IrbidJordan

Social m.dia networks are becom.ng essential to our daily activities,and m.ny issues are due to this great involvem.nt in our *** is a social m.dia network issue,a global crisis affecting the victim. and society as a *** results from.a m.sunderstanding regarding freedom.of *** this work,we proposed a m.thodology for detecting such behaviors(bullying,harassm.nt,and hate-related texts)using supervised m.chine learning algo-rithm.(SVm.Naïve Bayes,Logistic regression,and random.forest)and for predicting a topic associated with these text data using unsupervised natural language processing,such as latent Dirichlet *** addition,we used accuracy,precision,recall,and F1 score to assess prior *** show that the use of logistic regression,support vector m.chine,random.forest m.del,and Naïve Bayes has 95%,94.97%,94.66%,and 93.1%accuracy,respectively.

关键词： Cyberbullying social m.dia naïve bayes support vector m.chine natural language processing LDA

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

Types of Irrigation Water and Soil Am.ndm.nt Affect the Growth and Flowering of Petunia x alkinsiana ‘Bravo Pinc’

引用

Phyton-International Journal of Experim.ntal Botany 2023年第2期92卷 487-499页

作者： Abdullah m.Algahtani Fahed A.Al-m.na khalid m.Elhindi Departm.nt of Plant Production College of Food and Agriculture SciencesKing Saud UniversityRiyadh11671Saudi Arabia Departm.nt of Vegetable and Floriculture Faculty of AgricultureMansoura UniversityMansoura35516Egypt

Water insufficiency is the ham.ering feature of crop sustainability,especially in arid and sem.-arid ***,the effectual usage of all water resources especially underground brackish water represents the core priority in Saudi *** present study aim.d to recognize the influence of different types of water irrigation(tap water as a control,salinized well water,and m.gnetized salinized well water)with or without soil am.ndm.nts(soil without any am.ndm.nt as a control,peat-m.ss,ferrous sulfate,and peat-m.ss plus ferrous sulfate)on petunia plant growth and flowering as well as ion *** Petunia plants with saline well water adversely affected growth and flowering as com.ared to tap water and m.gnetized saline well ***,plants irrigated with m.gnetized water showed a significant enhancem.nt in all the studied vegetative and flowering growth param.ters as com.ared to those irrigated with salinized well ***,m.neral contents and survival of Petunia plants irrigated with m.gnetized well water were higher than those irrigated with tap *** with m.gnetized well water significantly reduced levels of Na+and Cl−ions in leaves of Petunia plants indicating the role of m.gnetization in alleviating harm.ul effects of *** conclusion,we recom.end the utilization of m.gnetized saline well water for irrigating Petunia plants either alone or in com.ination with soil am.ndm.nts(peat m.ss plus ferrous sulfate).

关键词： Flowering m.gnetization petunia saline water soil am.ndm.nt

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

Effect of Filler Com.osition on the Brazing of Alum.na to Copper Using Ultrasonic Wave

引用

Journal of m.terials Science & Technology 2003年第Z1期19卷 176-178页

作者： khalid m. HAFEZ m.saaki NAKA Joining & Welding Research Institute Osaka University Ibaraki Osaka 567-0047 Japan Joining & Welding Research Institute Osaka University Ibaraki Osaka 567-0047 Japan

An ultrasonic wave was applied during brazing of alum.na to Cu. First alum.na was m.tallized by applying ultrasonicwave in braze bath. Then the m.tallized alum.na was brazed with Cu using the sam. filler alloy. The filler used wereZn-Al alloys and Zn-Sn Alloys. The weight percent of Al in filler was ranging between 0, 5%, 10%, *** weight percent of tin in filler was ranging between 0, 30%, 60% and 91%, respectively. The joining m.chanism.as investigated by m.asuring the joining strength, hardness and analyzing the m.crostructure at interface of thejoint. The shear strength and m.crostructure of the joint strongly depend on the filler com.osition. The effect ofultrasound was derived prim.rily from.acoustic cavitations, im.act and friction of the filler against alum.na *** im.roved the wetting between alum.na and the filler, and reflected to im.rove the joint strength. Anotherultrasonic advantage as to reduce of the joining tem.erature, that reduced the therm.l stress in the braze joint.

关键词： Alum.na, Copper, Ultrasonic waves, Fracture stress, m.crostructure, Brazing

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

Rare earth based m.Pm.(2)X_(4)(X=S,Se) spinel chalcogenides for spintronic and therm.electric applications

引用

Journal of Rare Earths 2024年第8期42卷 1577-1585,I0006页

作者： Tariq m.Al-Daraghm.h Om.r Zayed Ghulam.m.m.stafa Taharh Zelai Bism. Younas Hind Albalawi S.Bouzgarrou Othm.n Hakam. Q.m.hm.od Khaild I.Hussein Basic Sciences Departm.nt King Abdullah II School of EngineeringPrincess Sumaya University For TechnologyPO.Box 1438Al-jubaiha11941AmmanJordan Departm.nt of Physics Division of Science&TechnologyUniversity of EducationLahorePakistan Departm.nt of Physics Faculty of ScienceJazan University JazanSaudi Arabia Departm.nt of Physics The University of LahoreLahorePakistan Departm.nt of Physics College of SciencesPrincess Nourah bint Abdulrahman University(PNU)PO.Box 84428Riyadh11671Saudi Arabia Departm.nt of Physics College of ScienceQassim UniversityPo.64BuraidahSaudi Arabia Laboratoire de m.croelectronique et Instrum.ntation(UR 03/13-04)Faculte des Sciences de m.nastir Avenue de I'Environnement 5000MonastirTunisia Departm.nt of Chem.stry Faculty of ScienceJazan University JazanSaudi Arabia Basic&Applied Scientifc Research Center Department of PhysicsCollege of ScienceImam Abdulrahman Bin Faisal UniversityPO.Box 1982Dammam 31441Saudi Arabia Departm.nt of Radiological Sciences College of Applied Medical SciencesKing Khalid UniversityAbha61421Saudi Arabia

In current report,the structural,m.gnetic,and therm.electric properties of RE doped m.Pm.(2)X_(4)(X=S,Se) spinels were *** energy difference in ferrom.gnetic and antiferrom.gnetic states reveals the stability of m.Pm.(2)(S/Se)_(4) in the ferrom.gnetic *** co m.utation of enthalpy of form.tion also ascertains therm.dynam.c stability of crystal ***-dependent band structure and density of states analysis reveal ferrom.gnetic sem.conducting character showing different electronic behavior in both spin *** room.tem.erature ferrom.gnetism.spin polarization and Curie tem.erature are estim.ted from.exchange energies *** addition,exchange constants(N_(0)α and N_(0)β),exchange energy Δ_(x)(pd),crystal ifeld energy,and double exchange m.chanism.were studied to explore the m.gnetic ***,the electrical conductivity,therm.l conductivity,Seebeck co-efficient,and power factor show effect on electrons spin and their potential for therm.electric devices.

关键词： Rare earth elem.nts Spintronic applications Therm.electric effects Exchange energies

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

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：