检索结果-南通市图书馆

Intelligent Microservice Based on Blockchain for Healthcare Applications

Computers, Materials & Continua 2021年第11期69卷 2513-2530页

作者： Faisal Jamil Faiza Qayyum Soha Alhelaly Farjeel Javed ammar Muthanna Department of Computer Engineering Jeju National UniversityJeju-si63243Korea College of Computing and Informatics Saudi Electronic UniversityRiyadhSaudi Arabia SAP Pakistan Liaison Office Islamabad44010Pakistan Department of Telecommunication Networks and Data Transmission The Bonch-Bruevich Saint-Petersburg State University of TelecommunicationsSaint Petersburg193232Russia Peoples’Friendship University of Russia(RUDN University)6 Miklukho-Maklaya St MoscowMoscow117198Russian Federation

Nowadays,the blockchain,Internet of Things,and artificial intelligence technology revolutionize the traditional way of data mining with the enhanced data preprocessing,and analytics approaches,including improved service ***,one of the main challenges is designing a combined approach that provides the analytics functionality for diverse data and sustains IoT applications with robust and modular blockchain-enabled services in a diverse *** data analytics model not only provides support insights in IoT data but also fosters process *** a robust IoT-based secure analytic model is challenging for several purposes,such as data from diverse sources,increasing data size,and monolithic service designing *** article proposed an intelligent blockchain-enabled microservice to support predictive analytics for personalized fitness data in an IoT *** designed system support microservice-based analytic functionalities to provide secure and reliable services for *** demonstrate the proposed model effectiveness,we have used the IoT fitness application as a case *** on the designed predictive analytic model,a recommendation model is developed to recommend daily and weekly diet and workout plans for improved body ***,the recommendation model objective is to help trainers make future health decisions of trainees in terms of workout and diet ***,the proposed model is evaluated using Hyperledger Caliper in terms of latency,throughput,and resource utilization with varying peers and orderer *** experimental result shows that the proposed model is applicable for diverse resourceconstrained blockchain-enabled IoT applications and extensible for several IoT scenarios.

关键词： Internet of things blockchain microservice fitness service

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

Heat Transfer Enhancement of an Automobile Engine Radiator using ZnO Water Base Nanofluids

引用

Journal of Thermal Science 2020年第4期29卷 1010-1024页

作者： Muhammad QASIM Muhammad SAJID KAMRAN Muhammad ammar Muhammad ALI JAMAL Muhammad YASAR JAVAID Department of Mechanical Engineering University of Engineering and TechnologyLahore 54890Pakistan Department of Chemical Engineering Technology Government College UniversityFaisalabad 38000Pakistan Department of Mechanical Engineering Technology Government College UniversityFaisalabad 38000Pakistan

In this research paper, the forced convective heat transfer enhancement of a Suzuki Mehran(VXR) 2016 radiator(heat exchanger) along with pressure drop and friction factor by utilizing Zinc oxide(Zn O) water based nanofluids has been experimentally studied. Three types of nanofluids with different volumetric concentrations of Zn O nanoparticles(0–0.3%) were employed in order to understand its effect on heat transfer enhancement. The experimental setup was completely designed as closely as possible to the car cooling system. The experimentation has been done under laminar flow conditions(186≤Re≤1127) at different fluid volume flow rates(2–12 L/min) and constant fluid inlet temperature(70°C) to the automobile radiator. A maximum enhancement in heat transfer rate, overall heat transfer coefficient and Nusselt number was obtained up to 41%, 50% and 31% by using nanofluid with 0.2% volumetric concentration of nanoparticles respectively. On the other hand, the mean enhancement in pressure drop and friction factor was obtained up to 47% and 46% by using nanofluid with the same volumetric concentration of nanoparticles i.e. 0.2% respectively. The experimental results also revealed that the heat transfer rate, overall heat transfer coefficient and Nusselt number of nanofluids increases by increasing the volume flow rates and volumetric concentration of nanoparticles. However, these thermal performance parameters of nanofluids started to decline when the volumetric concentration of nanoparticles was increased from 0.2% to 0.3%. Furthermore, pressure drop and friction factor of nanofluids increase by increasing the volumetric concentration of nanoparticles, while pressure drop increases and friction factor decreases by increasing the volume flow rate of nanofluids respectively. At the end, the thermal efficiency of automobile radiator with high cooling rates was obtained by using nanofluid with 0.2% volumetric concentration of nanoparticles.

关键词： ZnO nanoparticles heat transfer enhancement thermal efficiency automobile radiator

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

Adaptive Islanding Strategy of Sustainable Distribution System for Post-restoration Failures

引用

CSEE Journal of Power and Energy Systems 2023年第4期9卷 1517-1531页

作者： Qifang Chen Kaka Sanaullah ammar Tahir Mazhar Hussain Ali Raza Meer Mingchao Xia the Beijing Jiaotong University 100044Beijing China.

The power system is susceptible to failures,and further interruptions by subsequent outages which may cause extended events in the formed *** of the literature reviewed has focused on island formation after the disconnection of the main grid ***,there is still a need to analyze the post-restoration failures to improve the resilience and minimize the pro-longed disconnection of priority *** current research investigates the behavior of islanding schemes under secondary collapses and provides an adaptive solution to withstand such severities.A new total active critical node finding methodology is presented which eases the rearrangement of the initially formed island when affected by multiple faults or DG *** concept of single islanding with the coordination of multiple DGs is also discussed,in which the DG's power-sharing capacity is not confined to the boundaries of only particular *** economic plan is also proposed to select the controlled type DGs to reduce the overall cost of generation by reducing fuel *** evaluate the network's effectiveness and robustness,the proposed adaptive method is deployed on an updated IEEE 69-bus distribution *** Terms-Active distribution network,distributed generation,multi-objective,post-restoration,single islanding.

关键词： Active distribution network distributed generation multi-objective post-restoration single islanding.

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

Acousto-optically driven lensless single-shot ultrafast optical imaging

引用

Light(Science & Applications) 2022年第4期11卷 628-643页

作者： Mohamed Touil Said Idlahcen Rezki Becheker Denis Lebrun Claude Roze ammar Hideur Thomas Godin ORIA CNRS UMR6614-University de Rouen Normandie-INSA Rouen76800 Saint Etienne du RouvrayFrance

Driven by many applications in a wide span of scientifc fields,a myriad of advanced ultrafast imaging techniques have emerged in the last decade,featuring record-high imaging speeds above a trllion-frame-per-second with long sequence *** bringing remarkable insights into various ultrafast phenomena,their application out of a laboratory environment is however limited in most cases,either by the cost,complexity of the operation or by heavy data *** then report a versatile single-shot imaging technique combining sequentially timed lloptical mapping photography(STAMP)with acousto-optics programmable dispersive fhItering(AOPDF)and digital in-line holography(DIH).On the one hand,a high degree of simplicity is reached through the AOPDF,which enables full control over the acquisition parameters via an electrically driven phase and amplitude spectro-temporal tailoring of the imaging ***,contrary to most single-shot techniques,the frame rate,exposure time,and frame intensities can be independently adjusted in a wide range of pulse durations and chirp values without resorting to complex shaping stages,making the system remarkably agile and *** the other hand,the use of DIH,which does not require any reference beam,allows to achieve an even higher technical simplicity by allowing its lensless operation but also for reconstructing the object on a wide depth of field,contrary to classical techniques that only provide images in a single *** imaging speed of the system as well as its flexibility are demonstrated by visualizing ultrashort events on both the picosecond and nanosecond *** virtues and limitations as welll as the potential improvements of this on-demand ultrafast imaging method are critically discussed.

关键词： simplicity resort bringing

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

Uncertainty analysis of hydrological modeling in a tropicalarea using different algorithms

引用

Frontiers of Earth Science 2018年第4期12卷 661-671页

作者： ammar RAFIEI EMAM Martin KAPPAS Steven FASSNACHT Nguyen Hoang Khanh LINH Department of Cartography GIS and Remote SensingUniversity of Goettingen37077GoettingenGermany Colorado State University Fort CollinsCO 80523-1476USA Faculty of Land Resources and Agricultural Environment (FLRAE) Flue University of Agriculture and Forestry (F1UAF)Hue UniversityHue City 0084Vietnam

Hydrological modeling outputs are subject to uncertainty resulting from different sources of errors (e.g., error in input data, model structure, and model parameters), making quantification of uncertainty in hydrological modeling imperative and meant to improve reliability of modeling results. The uncertainty analysis must solve difficulties in calibration of hydrological models, which further increase in areas with data scarcity. The purpose of this study is to apply four uncertainty analysis algorithms to a semi-distributed hydrological model, quantifying different source of uncertainties (especially parameter uncertainty) and evaluate their performance. In this study, the Soil and Water Assessment Tools (SWAT) eco-hydrological model was implemented for the watershed in the center of Vietnam. The sensitivity of parameters was analyzed, and the model was calibrated. The uncertainty analysis for the hydrological model was conducted based on four algorithms: Generalized Likelihood Uncertainty Estimation (GLUE), Sequential Uncertainty Fitting (SUFI), Parameter Solution method (ParaSol) and Particle Swarm Optimization (PSO). The performance of the algorithms was compared using P-factor and Rfactor, coefficient of determination (R2), the Nash Sutcliffe coefficient of efficiency (NSE) and Percent Bias (PBIAS). The results showed the high performance of SUFI and PSO with P-factor>0.83, R-factor 0.91, NSE>0.89, and 0.18<0.32. Hence, we would suggest to use SUFI-2 initially to set the parameter ranges, and further use PSO for final analysis. Indeed, the uncertainty analysis must be accounted when the outcomes of the model use for policy or management decisions.

关键词： SWAT-CUP GLUE SUFI2 ParaSol PSO Vietnam

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

Microwave-assisted catalytic oxidative desulfurization of gasoil fuel using synthesized CuO-ZnO nanocomposites

引用

燃料化学学报 2019年第9期47卷 1075-1082页

作者： Mustafa H.Fadhil Saad H.ammar Marwa F.Abdul Jabbar Chemical Engineering Department Al-Nahrain University

Recently, organosulfur removal from liquid petroleum fuels is very significant aspect of environment protecting and fuel cell requests. Therefore, improved approaches to remove sulfur are still essential. In the present work, a simple catalytic oxidative desulfurization (CODS) system for Iraqi gasoil fraction has been successfully developed using CuO-ZnO nanocomposites as catalysts, and H 2O 2 as oxidant under microwave irradiation. The main reaction parameters influencing sulfur conversion including microwave power, irradiation time, catalyst dosage and H 2O 2 to gasoil volume ratio have been investigated. The CuO-ZnO nanocomposites was synthesized with different weight ratios and characterized by XRD, FE-SEM, AFM and BET surface area methods. The results reveal that, high sulfur conversion (93%) has been achieved under suitable conditions of microwave CODS as follows: microwave power of 540 W, irradiation time of 15 min, catalyst dosage of 8 g/L (0.4 g), and H 2O 2 ∶gasoil volume ratio of 0.3. The catalyst reusability shows that the synthesized catalyst can be reused five times without an important loss in its activity.

关键词： microwave oxidative desulfurization nanocomposites catalyst gasoil

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

Synthesis of Zeolite Imidazolate Frameworks Mateuial and Used as an Efficient Heterogeneous Catalyst for Various Chemical Reactions

Synthesis of Zeolite Imidazolate Frameworks Mateuial and Use...

引用

作者： Muhammad ammar（阿马尔）北京化工大学

学位级别：硕士

The porous material is a significant segment of the economy, it is in general consideration to develop and design porous material to have versatile properties such as well-defined structure, tunable pore size, high porosity and highly thermal and chemical stability to perform different type of commercial and industrial applications. For last couple of decades, there is lot of effects has been done to discover and explore new porous materials. Metal organic frameworks (MOFs) materials attained much more interest due to their extraordinary structures and properties with their capability for different applications. In his research work, we selected Zeolite Imidazole Frameworks (ZIFs) materials which possess crystal structure like zeolite materials, is a type of MOFs materials. We focused on the synthesis of ZIF-67, heteropoly acid encapsulated into ZIF-67cage and ZIF-8materials and give their applications in the Friedel-Crafts acylation reactions as an efficient heterogeneous catalyst.Initially, this work demonstrated the synthesis of ZIF-67materials which containing cobalt as metal ions and2-methylimidazole as ligand, triethylamine is used as deprotonated the ligand. ZIF-67is synthesized with different metal:ligand:TEA molar ratios along with metal:ligand ratio at room temperature. Various characterization techniques are utilized such as X-ray powder diffraction abbreviated as XRD, Fourier transform infrared spectroscopy abbreviated as FT-IR, Scanning electron microscopy abbreviated as SEM, Nitrogen adsorption-desorption as well as Thermo-gravimetric analysis (TGA) to explore the characteristics of synthesized ZIF-67samples. The catalytic performance of synthesized ZIF-67is investigated in Friedel-Crafts (FC) acylation reaction of anisole by means of benzoyl chloride as acylating agent. The performance of ZIF-67(metal:ligand molar ratio1:8) sample as catalyst is found better as compare to other ZIF-67samples which involve TEA as deprotonated the ligand.45%conversi

关键词： Metal Organic Framework Zeolite ImidazolateFramework (ZIF-8) Zeolite Imidazolate Framework (ZIF-67) Friedel-Crafts acylation Phosphotungstic acid Catalytic performance

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Cyberbullying Detection and Recognition with Type Determination Based on Machine Learning

引用

Computers, Materials & Continua 2023年第6期75卷 5307-5319页

作者： Khalid M.O.Nahar Mohammad Alauthman Saud Yonbawi ammar Almomani Computer Science Department Yarmouk UniversityIrbidJordan Department of Information Security Faculty of Information TechnologyUniversity of PetraAmmanJordan Software Engineering Department University of JeddahJeddahKSA Research and Innovation Department Skyline University CollegeP.O.Box 1797SharjahUAE IT Department-Al-Huson University College Al-Balqa Applied UniversityP.O.Box 50IrbidJordan

Social media networks are becoming essential to our daily activities,and many issues are due to this great involvement in our *** is a social media network issue,a global crisis affecting the victims and society as a *** results from a misunderstanding regarding freedom of *** this work,we proposed a methodology for detecting such behaviors(bullying,harassment,and hate-related texts)using supervised machine learning algo-rithms(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 machine,random forest model,and Naïve Bayes has 95%,94.97%,94.66%,and 93.1%accuracy,respectively.

关键词： Cyberbullying social media naïve bayes support vector machine 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

Intelligent Transmission Control for Efficient Operations in SDN

引用

Computers, Materials & Continua 2022年第5期71卷 2807-2825页

作者： Reem Alkanhel Abid Ali Faisal Jamil Muzammil Nawaz Faisal Mehmood ammar Muthanna Department of Information Technology College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadhSaudi Arabia Department of Computer Science University of Engineering and TechnologyTaxila47080Pakistan Department of Computer Science Govt.Akhtar Nawaz Khan(Shaheed)Degree College KTSHaripur22620Pakistan Department of Computer Engineering Jeju National UniversityJeju-siJeju Special Self-Governing Province63243Korea School of Information and Communication Engineering Zhengzhou UniversityChina Department of Telecommunication Networks and Data Transmission The Bonch-Bruevich Saint-Petersburg State University of Telecommunications193232Saint PetersburgRussia Peoples Friendship University of Russia(RUDN University)6 Miklukho-Maklaya St Moscow117198Russian Federation

Although the Software-Defined Network(SDN)is a well-controlled and efficient network but the complexity of open flow switches in SDN causes multiple *** solutions have been proposed so far for the prevention of errors and mistakes in it but yet,there is still no smooth transmission of pockets from source to destination specifically when irregular movements follow the destination host in SDN,the errors include packet loss,data compromise *** accuracy of packets received at their desired destination is possible if networks for pockets and hosts are monitored instead of analysis of network snapshot statistically for the state,as these approaches with open flow switches,discover bugs after their *** article proposes a design to achieve the said objective by defining the Intelligent Transmission Control Layer(ITCL)*** monitors all the connections of end hosts at their specific locations and performs necessary settlements when the connection state changes for one or multiple *** layer informs the controller regarding any state change at one period and controller collects information of end nodes reported via ***,updates flow tables accordingly to accommodate a location-change scenario with a routechange *** is organized on prototype-based implementation using the popular POX *** this paper,it has been discovered that ITCL produces efficient performance in the trafficking of packets and controlling different states of SDN for errors and packet loss.

关键词： Software-defined network ITCL POX open flow

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

A linear quadratic regulator control of a stand-alone PEM fuelcell power plant

引用

Frontiers in Energy 2014年第1期8卷 62-72页

作者： Amar BENAISSA Boualaga RABHI ammar MOUSSI Dahmani AISSA Department of Electrical Engineering University of Djelfa cit6 ain chih17000 Algeria MSE Laboratory University of Biskra B.P.145 Biskra 07000 Algeria LARHYS Laboratory University of Biskra B.P.145 Biskra 07000Algeria Thermal Power Station of M'sila M'sila 28000 Algeria

This paper introduces a technique based on linear quadratic regulator （LQR） to control the output voltage at the load point versus load variation from a stand- alone proton exchange membrane （PEM） fuel cell power plant （FCPP） for a group housing use. The controller modifies the optimal gains ki by minimizing a cost function, and the phase angle of the AC output voltage to control the active and reactive power output from an FCPP to match the terminal load. The control actions are based on feedback signals from the terminal load, output voltage and fuel cell feedback current. The topology chosen for the simulation consists of a 45 kW proton exchange membrane fuel cell （PEMFC）, boost type DC/ DC converter, a three-phase DC/AC inverter followed by an LC filter. Simulation results show that the proposed control strategy operated at low commutation frequency （2 kHz） offers good performances versus load variations with low total harmonic distortions （THD）, which is very useful for high power applications.

关键词： modeling of proton exchange membrane fuel cell (PEMFC) controlling of PEMFC. linear quadraticregulator (LQR) DC/DC converter DC/AC inverter

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：