检索结果-南通市图书馆

Dust particle surface potential in an argonhelium plasma using the(r,q)-distribution function

Communications in Theoretical Physics 2024年第9期76卷 141-148页

作者： Bahaaudin M Raffah A A Abid Abdullah Khan Amin Esmaeili Yas al-Hadeethi M N s Qureshi Department of Physics Faculty of SciencesKing Abdulaziz UniversityJeddah 21589Saudi Arabia Lithography in Devices Fabrication and Development research Group Deanship of Scientific ResearchKing Abdulaziz UniversityJeddah 21589Saudi Arabia Joint Laboratory of Plasma Application Technology Institute of Advanced TechnologyUniversity of Science and Technology of ChinaHefei230026China CAs Key Laboratory of Geospace Environment University of Science and Technology of ChinaHefei230026China Department of Physics Zhejiang Normal UniversityJinhua321005China Department of Physics Graduate School of ScienceTokyo Metropolitan UniversityMinami-Osawa 1-1Hachioji City192-0397Japan Department of Physics GC UniversityLahore 54000Pakistan

In this paper,the dust particle surface potential for argon-helium plasma is evaluated analytically and numerically in the context of negatively charged dust particles by employing a power-law(r,q)-distribution *** studies have reported the argon-helium plasma and conducted a brief theoretical and experimental *** deepen our understanding further,this study aims to analyze the argon-helium plasma comprehensively using the same pattern but with the(r,q)-distribution *** this purpose,the current balance equations are derived for electron,helium and argon ions,when these charge species attain the quasineutrality *** numerically examined the currents of plasma species for a broad range of effective distribution function parameters r and *** is revealed that the surface potential of dust particles is significantly affected by the parameters r and q,helium ion-to-electron temperature ratio,argon ion-to-electron temperature ratio,and helium ion to argon ion number density *** incorporating the multi-ion(argon-helium)species,the significance of low-temperature nonMaxwellian dusty(complex)plasma is briefly examined.

关键词： dusty plasma dust charge potential plasma physics helium argon plasma r q distribution function non-Maxwellian distribution

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

Cloud datacenter selection Using service Broker Policies:A survey

引用

Computer Modeling in Engineering & sciences 2024年第4期139卷 1-41页

作者： salam al-E’mari Yousef sanjalawe Ahmad al-daraiseh Mohammad Bany Taha Mohammad aladaileh Department of Information security Faculty of ITUniversity of PetraAmman11196Jordan Department of Cybersecurity School of ITAmerican University of Madaba(AUM)Amman11821Jordan Department of Computer science School of ITAmerican University of Madaba(AUM)Amman11821Jordan Department of data science and Artificial Intelligence School of ITAmerican University of Madaba(AUM)Amman11821Jordan

Amid the landscape of Cloud Computing(CC),the Cloud datacenter(DC)stands as a conglomerate of physical servers,whose performance can be hindered by bottlenecks within the realm of proliferating CC services.A linchpin in CC’s performance,the Cloud service Broker(CsB),orchestrates DC *** to adroitly route user requests with suitable DCs transforms the CsB into a bottleneck,endangering service *** tackle this,deploying an efficient CsB policy becomes imperative,optimizing DC selection to meet stringent Qualityof-service(Qos)*** numerous CsB policies,their implementation grapples with challenges like costs and *** article undertakes a holistic review of diverse CsB policies,concurrently surveying the predicaments confronted by current *** foremost objective is to pinpoint research gaps and remedies to invigorate future policy ***,it extensively clarifies various DC selection methodologies employed in CC,enriching practitioners and researchers *** synthetic analysis,the article systematically assesses and compares myriad DC selection *** analytical insights equip decision-makers with a pragmatic framework to discern the apt technique for their *** summation,this discourse resoundingly underscores the paramount importance of adept CsB policies in DC selection,highlighting the imperative role of efficient CsB policies in optimizing CC *** emphasizing the significance of these policies and their modeling implications,the article contributes to both the general modeling discourse and its practical applications in the CC domain.

关键词： Cloud computing cloud service broker datacenter selection quality-of-service user request

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

Disturbance Observer-Based Predictive Tracking Control of Uncertain HOFA Cyber-Physical systems

引用

IEEE/CAA Journal of Automatica sinica 2024年第7期11卷 1711-1713页

作者： da-Wei Zhang Guo-Ping Liu IEEE the Center for Control Theory and Guidance Technology Harbin Institute of TechnologyHarbin 150001China the Center for Control science and Technology Southern University of Science and TechnologyShenzhen 518055China

Dear Editor,In this letter,an output tracking control problem of uncertain cyber-physical systems(CPss)is considered in the perspective of high-order fully actuated(HOFA)system theory,where a lumped disturbance is use... 详细信息

关键词： Observer Uncertain letter

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

Improving the segmentation of Arabic Handwriting Using Ligature Detection Technique

引用

Computers, Materials & Continua 2024年第5期79卷 2015-2034页

作者： Husam Ahmad al Hamad Mohammad shehab College of Computer sciences and Informatics Amman Arab UniversityAmman11953Jordan

recognizing handwritten characters remains a critical and formidable challenge within the realm of computervision. although considerable strides have been made in enhancing English handwritten character recognitionthrough various techniques, deciphering Arabic handwritten characters is particularly intricate. This complexityarises from the diverse array of writing styles among individuals, coupled with the various shapes that a singlecharacter can take when positioned differently within document images, rendering the task more perplexing. Inthis study, a novel segmentation method for Arabic handwritten scripts is suggested. This work aims to locatethe local minima of the vertical and diagonal word image densities to precisely identify the segmentation pointsbetween the cursive letters. The proposed method starts with pre-processing the word image without affectingits main features, then calculates the directions pixel density of the word image by scanning it vertically and fromangles 30° to 90° to count the pixel density fromall directions and addre.s the problem of overlapping letters, whichis a commonly attitude in writing Arabic texts by many people. Local minima and thresholds are also determinedto identify the ideal segmentation area. The proposed technique is tested on samples obtained fromtwo datasets: Aself-curated image dataset and the IFN/ENIT dataset. The results demonstrate that the proposed method achievesa significant improvement in the proportions of cursive segmentation of 92.96% on our dataset, as well as 89.37%on the IFN/ENIT dataset.

关键词： Arabic handwritten segmentation image processing ligature detection technique intelligent recognition

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

Diabetes and obesity:A debate on bariatric interventions and its implications

引用

World Journal of Diabetes 2024年第11期15卷 2157-2161页

作者： JoséC Tatmatsu-Rocha Marcos R Lima da silva College of Medicine Postgraduate Program in Physiotherapy and FunctionalityDepartment of PhysiotherapyFederal University of Ceará-UFCFortaleza 60430-450CearáBrazil

In this editorial,we comment on an article by Tang et al published in the World Journal of *** and diabetes are two pathological situations that are intrinsically *** lifestyle changes nor pharmacological treatments have achieved diabetes *** this perspective,bariatric surgery has been widely used as an approach for weight loss in obese patients and as a strategy to promote metabolic *** main effects of bariatric surgery involve direct action in improving cardiovascular function and endothelial function and reducing insulin resistance,leading to diabetes remission in the short term following *** this context,it has been observed that hormones from the gastrointestinal tract and endothelium play a prominent role in this *** reversing endothelial dysfunction,it is possible to balance pro-inflammatory cytokine production,improving the availability of nitric oxide and inhibiting vascular oxidative ***,it can be considered an efficient anti-inflammatory strategy,alleviating interferon-gamma-mediated adipose tissue *** current challenge must be to unravel the pathophysiological mechanisms and potential targets for treating metabolic diseases.

关键词： Bariatric surgery Diabetes mellitus Oxidative stre.s Endothelial dysfunction Obesity

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

Local Hamilton type Gradient Estimates and Harnack Inequalities for Nonlinear Parabolic Equations on Riemannian Manifolds

引用

Acta Mathematicae Applicatae sinica 2024年第2期40卷 539-546页

作者： Wen WANG da-peng XIE Hui ZHOU school of Mathematics and statistics Hefei Normal UniversityHefei 230601China

In this paper,we prove a local Hamilton type gradient estimate for positive solution of the nonlinear parabolic equation ut(x,t)=Δu(x,t)+au(x,t) ln u(x,t)+bu^(α)(x,t),on M×(-∞,∞) with α∈R,where a and b are *** ... 详细信息

关键词： nonlinear parabolic equation gradient estimate Harnack inequality

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

Communication-less Management strategy for Electric Vehicle Charging in Droop-controlled Islanded Microgrids

引用

Journal of Modern Power systems and Clean Energy 2024年第4期12卷 1227-1238页

作者： Abdullah Azhar al-Obaidi Mohammed Zaki El-sharafy Hany E.Z.Farag saifullah shafiq ali al-Awami Independent Electricity system Operator(IEsO) MississaugaCanada Department of Electrical Engineering and Computer science York UniversityTorontoCanada University of Queensland StLucia QLD 4067Australia Department of Electrical Engineering King Fahd University of Petroleum&MineralsDhahranSaudi Arabia

Adopting high penetration levels of electric vehicles(EVs)necessitates the implementation of appropriate charging management systems to mitigate their negative impacts on pow-er distribution ***,most of the proposed Ev charging management techniques rely on the availability of high-bandwidth communication *** techniques are far from realization due to①the lack of utility-grade communica-tion systems in many cases such as secondary(low-voltage)pow-er distribution systems to which EVs are connected,rural ar-eas,remote communities,and islands,and②existing fears and concerns about the data privacy of EV users and cyber-physical *** these cases,appropriate local control schemes are needed to ensure the adequate management of EV charging without violating the grid operation ***,this paper introduces a new communication-less management strategy for EV charging in droop-controlled islanded *** proposed strategy is autonomous,as it is based on the measurement of system frequency and local bus *** proposed strategy implements a social charging fairness policy during periods when the microgrid distributed genera-tors(DGs)are in short supply by allocating more.system capaci-ty to the EVs with less charging in the ***,a novel communication-less EV load shedding scheme is incorpo-rated into the management strategy to provide relief to the mi-crogrid during events of severe undervoltage or underfrequency occurrences due to factors such as high loading or DG *** simulations demonstrate the superiority of the pro-posed strategy over the state-of-the-art controllers in modulat-ing the EV charging demand to counteract microgrid instability.

关键词： Charging battery management communication-less control droop control electric vehicle islanded microgrid

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

Adsorption of yttrium(Y^(3+)) and concentration of rare earth elements from phosphogypsum using chitin and chitin aerogel

引用

Journal of Rare Earths 2024年第4期42卷 775-782页

作者： Glaydson s.dos re.s Diana Pinto sabrina F.Lütke Eder C.Lima Luis F.O.silva Irineu A.s.De Brum Guilherme L.Dotto Department of Forest Biomaterials and Technology Biomass Technology Centre Swedish University of Agricultural SciencesUmeaE13Swedn Universidad De La Costa Calle 58#55-66080002BarranquillaAtlanticoColombia research Group on Adsorptive and Catalytic Process Engineering(ENGEPAC) Federal University of Santa MariaAv.Roraima100079705900Santa MariaRSBrazil Institute of Chemistry Federal University of Rio Grande do Sul90040060Porto AlegreBrazil

Chitin powder and chitin-aerogel were prepared from shrimp wastes and used to uptake Y^(3+)from aqueous solutions and concentrate this rare earth element from phosphogypsum(PG).Chitin aerogel displays a specific surface area of 945 m^(2)/g,while chitin powder is 3.6 m^(2)/g,which largely influences its adsorption *** the adsorption in synthetic solutions,the effect of pH on Y^(3+)removal is strong for chitin powder *** contrast,no big pH influence was detected for chitin *** interactions and chelation can highlight the proposed mechanism of Y^(3+)on chitin adsorbents for the powder and ***,in addition to these interactions,pore filling/pore diffusion is the main mechanism of Y^(3+)removal in the chitin *** aerogel is efficient in concentrating 8 times the Y^(3+)from PG,a very complex *** complex chitin aerogel-Y^(3+)can be a secondary source of rare earth elements for other applications.

关键词： Rare earths sustainable material Chitin powder Chitin porous aerogel Yttrium adsorption and recovery

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

Territorial heritage gentrification in Abdali in Amman,Jordan

引用

Built Heritage 2024年第2期8卷 33-51页

作者： Rama al Rabady Department of Architecture Engineering The Hashemite UniversityP.O.Box 330127Zarqa13133Jordan

Having established itself as a heritage discourse,planetary gentrification is being studied in terms of how it operates in the Global *** study focuses on the case of Abdali Amman,a significant mixed-use neighbourhood in Jordan that has experienced numerous mega-gentrification *** to Bourdieu’s theories of the state and dispositional practices,this study critically evaluates urban gentrification *** terms of gentrification governance,which takes place in two adjacent‘state’and‘civic’zones inside the Abdali district,this study analyses the interactions between transnational and state actors and the intragovernmental(state-municipality)governance *** in Amman is connected to the revitalisation of historic sites,is a matter of urban governance,and operates from the transnational sphere along national and local ***,gentrification is caught in a desire/resistance paradox with calls for legitimacy and *** a country in the Global south,Jordan has welcomed capitalist *** is articulated within a flux between deterritorialisation/reterritorialisation,producing a form of‘heritage gentrification’in which history and national heritage are.sacrificed through a process of satellite gentrification that is rooted in generative cultural transformation and governed by decentralised power *** a Western blueprint of planetary gentrification through narrow gates into non-Western environments is a prevailing challenge.

关键词： Neoliberalism Planetary gentrification Geographies in the Global south Dispositional practice Urban military heritage satellite territorialism Trans-governance gentrification Abdali Amman

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

High temperature deformation and recrystallization behavior of magnesium bicrystals with 90°<1010>and 90°<1120>tilt grain boundaries

引用

Journal of Magnesium and alloys 2024年第2期12卷 625-638页

作者： Kevin Bissa Talal al-samman Dmitri A.Molodov Institute of Physical Metallurgy and Materials Physics RWTH Aachen University52056 AachenGermany International research Organization for Advanced science and Technology(IROAsT) Kumamoto UniversityKumamoto 860-8555Japan

The deformation mechanisms and dynamic recrystallization(DRX)behavior of specifically grown bicrystals with a symmetric 90°and 90°tilt grain boundary,respectively,were investigated under deformation in plane strain compre.sion at 200℃and 400℃.The microstructures were analyzed by panoramic optical microscopy and large-area electron backscatter diffraction(EBsD)orientation *** analysis employed a meticulous approach utilizing hundre.s of individual,small EBsD maps with a small step size that were.stitched together to provide comprehensive access to orientation and misorientation data on a macroscopic *** slip primarily governed the early stages of deformation at the two temperatures,and the resulting shear induced lattice rotation around the transverse direction(TD)of the *** existence of the grain boundary gave rise to dislocation pile-up in its vicinity,leading to much larger TD-lattice rotations within the boundary region compared to the *** incre.sing temperature,the deformation was generally more uniform towards the bulk due to enhanced dislocation mobility and more uniform stre.s *** recrystallization at 200℃was initiated in{1011}-compre.sion twins at strains of 40%and *** 400℃,DRX consumed the entire grain boundary region and gradually replaced the deformed microstructure with progre.sing *** recrystallized grains displayed characteristic orientations,such that their c-axes were perpendicular to the TD and additionally scattered between 0°and 60°from the loading *** recrystallized grains displayed mutual rotations of up to 30°around the c-axes of the initial grains,forming a discernible basal fiber texture component,prominently visible in the{1120}pole *** is noteworthy that the deformation and DRX behaviors of the two analyzed bicrystals exhibited marginal variations in response to strain and deformation temperature.

关键词： Elevated deformation temperatures Plain strain compre.sion Magnesium bicrystals Panorama EBsD Dynamic recrystallization

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：