检索结果-南通市图书馆

Fibre Optic Protection System for Concrete Structures

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2006年第3期22卷 404-410页

作者： J.S.Leng a.hameed D.Winter R.A.Barnes G.C.Mays G.F.Fernando Centre for Composite Materials Harbin Institute of Technology Harbin 150001 China Engineering System Department Defence Academy of the United Kingdom Cranfield University Shrivenham Wiltshire SN6 8LA UK

The design concepts, modelling and implementation of various fibre optic sensor protection systems for development in concrete structures were investigated. Design concepts and on-site requirements for surface-mounted and embedded optical fibre sensor in concrete were addressed. Finite element （FE） modelling of selected sensor protection systems in strain-transfer efficiency from the structure to the sensing region was also studied. And experimental validation of specified sensor protection system was reported. Results obtained indicate that the protection system for the sensors performs adequately in concrete environment and there is very good correlation between results obtained by the protected fibre optic sensors and conventional electrical resistance strain gauges.

关键词： Fibre optic sensor (FOS) Sensor protection system (SPS) Concrete structures Extrinsic Fabry-Perot interferometer (EFPI) sensor Smart Structures Strain transfer

Antibacterial Characterization of Silver Nanoparticles against *** ATCC-15224

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2008年第2期24卷 192-196页

作者： M.Raffi F.Hussain T.M.Bhatti J.I.Akhter a.hameed M.M.Hasan Department of Chemical and Materials Engineering Pakistan Institute of Engineering and Applied Sciences(PIEAS)Islamabad-45650Pakistan Department of Microbiology Faculty of Biological SciencesQuaid-i-Azam UniversityIslamabadPakistan Central Analytical Facility Division Pakistan Institute of Nuclear Science and Technology(PINSTECH)Islamabad-45650Pakistan Physics Division Pakistan Institute of Nuclear Science and Technology(PINSTECH)Islamabad-45650Pakistan

Silver nanoparticles of mean size 16 nm were synthesized by inert gas condensation （IGC） method. Crystalline structure, morphology and nanoparticles size estimation were conducted by X-ray diffraction （XRD） and transmission electron microscopy （TEM）. Antibacterial activity of these silver nanoparticles as a function of particles concentration against gram-negative bacterium Escherichia coli （E. coli） was carried out in liquid as well as solid growth media. Scanning electron microscopy （SEM） and TEM studies showed that silver nanoparticles after interaction with *** have adhered to and penetrated into the bacterial cells. Antibacterial properties of silver nanoparticles are attributed to their total surface area, as a larger surface to volume ratio of nanoparticles provides more efficient means for enhanced antibacterial activity.

关键词： Silver Nanoparticles Antibacterial Electron microscopy

Disease Diagnosis System Using IoT Empowered with Fuzzy Inference System

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第3期70卷 5305-5319页

作者： Talha Mahboob Alam Kamran Shaukat Adel Khelifi Wasim Ahmad Khan Hafiz Muhammad Ehtisham Raza Muhammad Idrees Suhuai Luo Ibrahim a.hameed Department of Computer Science and Information Technology Virtual University of PakistanLahorePakistan School of Information and Physical Sciences The University of NewcastleAustralia Department of Computer Science and Information Technology Abu Dhabi UniversityAbu DhabiUnited Arab Emirates School of Computer Science National College of Business Administration&EconomicsLahorePakistan Sir Syed College of Computer Science University of Engineering and TechnologyLahorePakistan Department of Data Science University of the PunjabLahorePakistan Department of ICT and Natural Sciences Norwegian University of Science and TechnologyTrondheimNorway

Disease diagnosis is a challenging task due to a large number of associated *** in the diagnosis process arises frominaccuracy in patient attributes,missing data,and limitation in the medical expert’s ability to define cause and effect relationships when there are multiple interrelated *** paper aims to demonstrate an integrated view of deploying smart disease diagnosis using the Internet of Things(IoT)empowered by the fuzzy inference system(FIS)to diagnose various *** Fuzzy Systemis one of the best systems to diagnose medical conditions because every disease diagnosis involves many uncertainties,and fuzzy logic is the best way to handle *** proposed system differentiates new cases provided symptoms of the ***,it becomes a time-sensitive task to discriminate symptomatic *** proposed system can track symptoms firmly to diagnose diseases through IoT and FIS smartly and *** coefficients have been employed to predict and compute the identified disease’s severity for each sign of *** study aims to differentiate and diagnose COVID-19,Typhoid,Malaria,and *** study used the FIS method to figure out the disease over the use of given data related to correlating with input *** tool is utilised for the implementation of *** procedure on the aforementioned given data presents that affectionate disease can derive from the *** results of our proposed method proved that FIS could be utilised for the diagnosis of other *** study may assist doctors,patients,medical practitioners,and other healthcare professionals in early diagnosis and better treat diseases.

关键词： Disease diagnosis system COVID-19 healthcare biomedical rules extraction

Vision based intelligent traffic light management system using Faster R‐CNN

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CAAI Transactions on Intelligence Technology 2024年第4期9卷 932-947页

作者： Syed Konain Abbas Muhammad Usman Ghani Khan Jia Zhu Raheem Sarwar Naif R.Aljohani Ibrahim a.hameed Muhammad Umair Hassan Department of Computer Science and Engineering University of Engineering and TechnologyLahorePakistan Zhejiang Key Laboratory of Intelligent Education Technology and Application Zhejiang Normal UniversityJinhuaChina OTHEM Manchester Metropolitan UniversityManchesterUK Faculty of Computing and Information Technology King Abdulaziz UniversityJeddahSaudi Arabia Department of ICT and Natural Sciences Norwegian University of Science and Technology(NTNU)ÅlesundNorway

Transportation systems primarily depend on vehicular flow on roads. Developed coun-tries have shifted towards automated signal control, which manages and updates signal synchronisation automatically. In contrast, traffic in underdeveloped countries is mainly governed by manual traffic light systems. These existing manual systems lead to numerous issues, wasting substantial resources such as time, energy, and fuel, as they cannot make real‐time decisions. In this work, we propose an algorithm to determine traffic signal durations based on real‐time vehicle density, obtained from live closed circuit television camera feeds adjacent to traffic signals. The algorithm automates the traffic light system, making decisions based on vehicle density and employing Faster R‐CNN for vehicle detection. Additionally, we have created a local dataset from live streams of Punjab Safe City cameras in collaboration with the local police authority. The proposed algorithm achieves a class accuracy of 96.6% and a vehicle detection accuracy of 95.7%. Across both day and night modes, our proposed method maintains an average precision, recall, F1 score, and vehicle detection accuracy of 0.94, 0.98, 0.96 and 0.95, respectively. Our proposed work surpasses all evaluation metrics compared to state‐of‐the‐art methodologies.

关键词： access control artificial intelligence computer vision intelligent control

Advances in greenhouse automation and controlled environment agriculture:A transition to plant factories and urban agriculture

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2018年第1期11卷 1-22页

作者： Redmond Ramin Shamshiri Fatemeh Kalantari K.C.Ting Kelly R.Thorp Ibrahim a.hameed Cornelia Weltzien Desa Ahmad Zahra Mojgan Shad Smart Farming Technology Research Center Department of Biological and Agricultural EngineeringFaculty of EngineeringUniversiti Putra Malaysia43400SerdangSelangorMalaysia Department of Landscape Architecture Faculty of Design and ArchitectureUniversiti Putra Malaysia43400SerdangSelangorMalaysia Department of Agricultural and Biological Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA United States Department of Agriculture Agricultural Research ServiceU.S.Arid-Land Agricultural Research CenterMaricopaAZ 85138USA Dept.of ICT and Natural Sciences Faculty of Information Technology and Electrical EngineeringNorwegian University of Science and Technology(NTNU)Larsgårdsveien 2NO-6009ÅlesundNorway Leibniz Institute for Agricultural Engineering and Bioeconomy Max-Eyth-Allee 10014469 Potsdam-BornimGermany Adaptive AgroTech Consultancy International CA 93955USA

Greenhouse cultivation has evolved from simple covered rows of open-fields crops to highly sophisticated controlled environment agriculture(CEA)facilities that projected the image of plant factories for urban *** advances and improvements in CEA have promoted the scientific solutions for the efficient production of plants in populated cities and multi-story *** deployment of CEA for urban agriculture requires many components and subsystems,as well as the understanding of the external influencing factors that should be systematically considered and *** review is an attempt to highlight some of the most recent advances in greenhouse technology and CEA in order to raise the awareness for technology transfer and adaptation,which is necessary for a successful transition to urban *** study reviewed several aspects of a high-tech CEA system including improvements in the frame and covering materials,environment perception and data sharing,and advanced microclimate control and energy optimization *** research highlighted urban agriculture and its derivatives,including vertical farming,rooftop greenhouses and plant factories which are the extensions of CEA and have emerged as a response to the growing population,environmental degradation,and urbanization that are threatening food ***,several opportunities and challenges have been identified in implementing the integrated CEA and vertical farming for urban agriculture.

关键词： smart agriculture greenhouse modelling urban agriculture vertical farming automation internet of things(IoT) wireless sensor network plant factories

Simulation software and virtual environments for acceleration of agricultural robotics:Features highlights and performance comparison

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2018年第4期11卷 15-31页

作者： Redmond Ramin Shamshiri Ibrahim a.hameed Lenka Pitonakova Cornelia Weltzien Siva K.Balasundram Ian J.Yule Tony E.Grift Girish Chowdhary Department of Agriculture Technology Faculty of AgricultureUniversiti Putra Malaysia43400SerdangSelangorMalaysia Dept.of ICT and Natural Sciences Faculty of Information Technology and Electrical EngineeringNorwegian University of Science and Technology(NTNU)Larsgårdsveien 2NO-6009ÅlesundNorway Department of Computer Science University of BristolBristolUnited Kingdom Leibniz Institute for Agricultural Engineering and Bioeconomy Max-Eyth-Allee 10014469 Potsdam-BornimGermany New Zealand Centre for Precision Agriculture(NZCPA) School of Agriculture and EnvironmentMassey UniversityPrivate Bag 11222Palmerston North 4442New Zealand Department of Agricultural and Biological Engineering University of Illinois at Urbana Champaign1304 West Pennsylvania Avenue UrbanaIL 61801USA

Research efforts for development of agricultural robots that can effectively perform tedious field tasks have grown significantly in the past *** robots are complex systems that require interdisciplinary collaborations between different research groups for effective task delivery in unstructured crops and plants *** the exception of milking robots,the extensive research works that have been carried out in the past two decades for adaptation of robotics in agriculture have not yielded a commercial product to *** accelerate this pace,simulation approach and evaluation methods in virtual environments can provide an affordable and reliable framework for experimenting with different sensing and acting mechanisms in order to verify the performance functionality of the robot in dynamic *** paper reviews several professional simulators and custom-built virtual environments that have been used for agricultural robotic *** key features and performance efficiency of three selected simulators were also compared.A simulation case study was demonstrated to highlight some of the powerful functionalities of the Virtual Robot Experimentation *** of the objects and scenes were presented as the proof-of-concept for using a completely simulated robotic platform and sensing systems in a virtual citrus *** was shown that the simulated workspace can provide a configurable and modular prototype robotic system that is capable of adapting to several field conditions and tasks through easy testing and debugging of control algorithms with zero damage risk to the real robot and to the actual *** review suggests that an open-source software platform for agricultural robotics will significantly accelerate effective collaborations between different research groups for sharing existing workspaces,algorithms,and reusing the materials.

关键词： agricultural robotics precision agriculture virtual orchards digital agriculture simulation software multi-robots

Research and development in agricultural robotics:A perspective of digital farming

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2018年第4期11卷 1-14页

作者： Redmond Ramin Shamshiri Cornelia Weltzien Ibrahim a.hameed Ian J.Yule Tony E.Grift Siva K.Balasundram Lenka Pitonakova Desa Ahmad Girish Chowdhary Department of Agriculture Technology Faculty of AgricultureUniversiti Putra Malaysia43400SerdangSelangorMalaysia Leibniz Institute for Agricultural Engineering and Bioeconomy Max-Eyth-Allee 10014469 Potsdam-BornimGermany Dept.of ICT and Natural Sciences Faculty of Information Technology and Electrical EngineeringNorwegian University of Science and Technology(NTNU)Larsgårdsveien 2NO-6009ÅlesundNorway New Zealand Centre for Precision Agriculture(NZCPA) School of Agriculture and EnvironmentMassey UniversityPrivate Bag 11222Palmerston North 4442New Zealand Department of Agricultural and Biological Engineering University of Illinois at Urbana Champaign1304 West Pennsylvania Avenue UrbanaIL 61801USA Department of Computer Science University of BristolBristolUnited Kingdom Department of Biological and Agricultural Engineering Faculty of EngineeringUniversiti Putra Malaysia

Digital farming is the practice of modern technologies such as sensors,robotics,and data analysis for shifting from tedious operations to continuously automated *** paper reviews some of the latest achievements in agricultural robotics,specifically those that are used for autonomous weed control,field scouting,and *** identification,task planning algorithms,digitalization and optimization of sensors are highlighted as some of the facing challenges in the context of digital *** concepts of multi-robots,human-robot collaboration,and environment reconstruction from aerial images and ground-based sensors for the creation of virtual farms were highlighted as some of the gateways of digital *** was shown that one of the trends and research focuses in agricultural field robotics is towards building a swarm of small scale robots and drones that collaborate together to optimize farming inputs and reveal denied or concealed *** the case of robotic harvesting,an autonomous framework with several simple axis manipulators can be faster and more efficient than the currently adapted professional expensive *** robots are becoming the inseparable parts of the modern farms,our conclusion is that it is not realistic to expect an entirely automated farming system in the future.

关键词： agricultural robotics precision agriculture virtual orchards digital agriculture simulation software multi-robots

An Implementation of Haar Wavelet Based Method for Numerical Treatment of Time-fractional Schrdinger and Coupled Schrdinger Systems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2019年第1期6卷 177-187页

作者： Najeeb Alam Khan Tooba.hameed the Department of Mathematics University of Karachi

The objective of this paper is to solve the timefractional Schr¨odinger and coupled Schr¨odinger differential equations(TFSE) with appropriate initial conditions by using the Haar wavelet approximation. For the most part, this endeavor is made to enlarge the pertinence of the Haar wavelet method to solve a coupled system of time-fractional partial differential equations. As a general rule, piecewise constant approximation of a function at different resolutions is presentational characteristic of Haar wavelet method through which it converts the differential equation into the Sylvester equation that can be further simplified easily. Study of the TFSE is theoretical and experimental research and it also helps in the development of automation science,physics, and engineering as well. Illustratively, several test problems are discussed to draw an effective conclusion, supported by the graphical and tabulated results of included examples, to reveal the proficiency and adaptability of the method.

关键词： Fractional calculus Haar wavelets operational matrix wavelets

Ricochet quantification using a multiple sensor approach

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2021年第2期17卷 305-314页

作者： Michael Muster Amer hameed David Wood Centre for Defence Engineering Cranfield UniversityDefence Academy of the United KingdomShrivenhamSN68LAUK

This study investigates the ricochet behaviour of three different small-arms projectile types using a novel ricochet measuring *** results can be used to estimate the danger potential of ricochets on shooting ranges.A ricochet is the change of direction and velocity of a projectile after impacting an oblique *** impact produces strong vibrations on a rigid *** this impact,flexural waves travel radially outwards from the point of *** waves are used to determine the properties of the impactor with accelerometers situated on the target *** the use of two measurement plates,one can produce a ricochet and detect the velocity at the same *** are suitable for accurate momentum measurements of single ***,depending upon strike velocity and the impact angle,a ricochet can separate in multiple fragments after being *** the operational safety perspective,these fragments need to be detected,as *** approach of a coupled sensor concept was chosen to solve this *** sensors were additionally used to visualise the heat which is produced after penetrating a rubber layer pasted in front of the steel target *** this approach one was able to detect the position of *** investigations showed that the measurement system performance is better with a multiple sensor design,which includes accelerometers for the velocity,impact strength and partly the position measurement,while the thermographic sensor was used for the position measurement and partly the momentum *** investigated ammunition showed plausible fragmentation behaviour,and the results can already be used to estimate the danger potential of different ammunition *** projectiles fragment to small particles already after being deflected under a small ***,Full Metal Jacket projectiles with or without a steel core do not fragment under angles which are less than 5.The objective of the pa

关键词： Ricochet analysis Small-calibre ammunition Velocity measurement Thermography