检索结果-南通市图书馆

A Systematic Literature Review of Machine Learning and Deep Learning Approaches for Spectral Image Classification in Agricultural Applications Using Aerial Photography

引用

Computers, Materials & Continua 2024年第3期78卷 2967-3000页

作者： Usman Khan Muhammad Khalid Khan Muhammad Ayub Latif Muhammad naveed Muhammad Mansoor Alam Salman A.Khan Mazliham Mohd Su’ud College of Computing and Information Sciences Karachi Institute of Economics and TechnologyKarachi75190Pakistan Faculty of Computing and Informatics(FCI) Multimedia UniversityCyberjaya63100Malaysia Faculty of Computing Riphah International UniversityIslamabad46000Pakistan Faculty of Engineering and Information Technology School of Computer ScienceUniversity of Technology SydneySydneyAustralia

Recently,there has been a notable surge of interest in scientific research regarding spectral *** potential of these images to revolutionize the digital photography industry,like aerial photography through Unmanned Aerial Vehicles(UAVs),has captured considerable *** encouraging aspect is their combination with machine learning and deep learning algorithms,which have demonstrated remarkable outcomes in image *** a result of this powerful amalgamation,the adoption of spectral images has experienced exponential growth across various domains,with agriculture being one of the prominent *** paper presents an extensive survey encompassing multispectral and hyperspectral images,focusing on their applications for classification challenges in diverse agricultural areas,including plants,grains,fruits,and *** meticulously examining primary studies,we delve into the specific agricultural domains where multispectral and hyperspectral images have found practical ***,our attention is directed towards utilizing machine learning techniques for effectively classifying hyperspectral images within the agricultural *** findings of our investigation reveal that deep learning and support vector machines have emerged as widely employed methods for hyperspectral image classification in ***,we also shed light on the various issues and limitations of working with spectral *** comprehensive analysis aims to provide valuable insights into the current state of spectral imaging in agriculture and its potential for future advancements.

关键词： Machine learning deep learning unmanned aerial vehicles multi-spectral images image recognition object detection hyperspectral images aerial photography

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

Wet-milling synthesis of immobilized Pt/Ir nanoclusters as promising heterogeneous catalysts

引用

Nano Research 2022年第4期15卷 3065-3072页

作者： Peng Du Kai Huang Xiaoyuan Fan Jingteng Ma naveed Hussain Ruyue Wang Bohan Deng Binghui Ge Haolin Tang Ru Zhang Ming Lei Hui Wu State Key Laboratory of Information Photonics and Optical Communications&School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Being a typical state of the art heterogeneous catalyst,supported noble metal catalyst often demonstrates enhanced catalytic ***,a facile synthetic method for realizing large-scale and low-cost supported noble metal catalyst is strictly *** this end,by making use of the strong metal-support interaction(SMSI)and mechanochemical reaction,we introduce an efficient synthetic route to obtain ultrafine Pt and Ir nanoclusters immobilized on diverse substrates by wet chemical *** further demonstrate the scaling-up effect of our approach by large-scale ball-milling production of Pt nanoclusters immobilized on TiO_(2)*** synthesized Pt/Ir@Co_(3)O_(4)catalysts exhibit superior oxygen evolution reaction(OER)performance with only 230 and 290 mV overpotential to achieve current density of 10 and 100 mA·cm^(-2),beating the catalytic performance of Co_(3)O_(4)supported Pt or Ir clusters and commercial Ir/*** is envisioned that the present work strategically directs facile ways for fabricating supported noble metal heterogeneous catalysts.

关键词： heterogeneous catalysts metal clusters wet milling large-scale production strong metal–support interaction

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

Applicability of an ultra-long-range terrestrial laser scanner to monitor the mass balance of Muz Taw Glacier,Sawir Mountains,China

引用

Research in Cold and Arid Regions 2018年第1期10卷 47-54页

作者： FeiTeng Wang ChunHai Xu ZhongQin Li Muhammad naveed Anjum Lin Wang State Key Laboratory of Cryospheric Science/Tien Shan Glaciological Station Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China University of Chinese Academy of Sciences Beijing 100049China

Glacier mass balance is a key component of glacier monitoring programs. Information on the mass balance of Sawir Mountains is poor due to a dearth of in-situ measurements. This paper introduces the applicability of an ultra-long-range terrestrial laser scanner(TLS) to monitor the mass balance of Muz Taw Glacier, Sawir Mountains, China. The Riegl VZ?-6000 TLS is exceptionally well-suited for measuring snowy and icy terrain. Here, we use TLS to create repeated high spatiotemporal resolution DEMs, focusing on the annual mass balance(June 2, 2015 to July 25, 2016). According to TLS-derived high spatial resolution point clouds, the front variation(glacier retreat) of Muz Taw Glacier was 9.3 m. The mean geodetic elevation change was 4.55 m at the ablation area. By comparing with glaciological measurements, the glaciological elevation change of individual stakes and the TLS-derived geodetic elevation change of corresponding points matched closely, and the calculated balance was-3.864±0.378 m w.e.. This data indicates that TLS provides accurate results and is therefore suitable to monitor mass balance evolution of Muz Taw Glacier.

关键词： glacier front variation geodetic mass balance Riegl VZ?-6000 terrestrial laser scanner Muz Taw Glacier Sawir Mountains

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

Sliding Mode Control-Based Autonomous Control of a Tri-rotor Unmanned Aerial Vehicle

引用

Guidance, Navigation and Control 2021年第3期1卷 52-75页

作者： Abid Raza Fahad Mumtaz Malik Rameez Khan naveed Mazhar Hameed Ullah Nigar Ahmed Department of Electrical Engineering College of Electrical and Mechanical EngineeringNational University of Sciences and Technology46000IslamabadPakistan College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjingJiangsu 210016P.R.China

A nonlinear control technique for autonomous control of a tri-rotor unmanned aerial vehicle is presented in this ***,a comprehensive mathematical model is developed using the Newton–Euler approach for a tri-rotor,which is found to be highly nonlinear and ***,the equivalent input a±ne model is extracted by applying a suitable ***,the sliding mode control for trajectory tracking is chosen which is immune to matched external disturbances,parametric uncertainties,and modeling *** proposed controller performance has been veri¯ed for appropriate inputs under wind disturbances using MATLAB,and the simulation results are presented.

关键词： Autonomous control nonlinear control sliding mode control unmanned aerial vehicle tri-rotor

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

A probe into the medicinal potential of Viola canescens-A threatened medicinal plant from Himalaya

引用

Journal of Coastal Life Medicine 2016年第7期4卷 575-579页

作者： Sidra Sabir Abida akram naveed Iqbal Raja Zia-ur-Rehman Mashwani Sohail Huma Mehreen Sadaf Mubashir Hussain Iqra Riaz Nabeela Ahmad Ejaz Ahmed Department of Botany PMAS-Arid Agriculture UniversityRawalpindiPakistan

Viola canescens *** *** a perennial herb belonging to family Violaceae,and it is almost cosmopolitan in *** plant is widely used in Ayurveda and Unani medicinal systems for curing various ailments,most commonly for cough and *** studies releaved that this plant is rich in secondary *** plant revealed significant antimicrobial,anti-inflamatory,antioxidant,hepatoprotective,laxative,analgesic as well as antitumor *** to all these important pharmacological activities,market demand of Viola canescens is increasing day by day and this plant is facing tremendous over exploitation and becomes a threatened plant according to International Union for Conservation of Nature and Natural *** present review compiles that the ethnobotanical,phytochemical and pharmacological aspects of the plant need to be conserved.

关键词： Viola canescens Medicinal systems Secondary metabolites Pharmacological activities

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

Optimum High-Quality Ceramic Support like SiC, AI203 ＆ TiO2 for Cobalt as a Very Active Metal for Fisher-Tropsch-Synthesis in a Fixed Bed Reactor Configuration

引用

Journal of Energy and Power Engineering 2015年第2期9卷 141-148页

作者： Ansari Shahid Hussain Shahid naveed Center for Advanced Studies in Energy National University of Sciences & Technology Islamabad 44000 Pakistan Faculty of Chemical Engineering University of Engineering and Technology Lahore 54000 Pakistan

A series of experiments were performed on indigenously synthesized catalyst pallets of cobalt as a very active metal on ceramic support like SiC, A1203 ＆ TiO2 in a fixed bed reactor configuration with an aim to study the catalyst activity ＆ selectivity, chemical kinetics, design flexibility, temperature, pressure by characteristics diffusion distance. Catalyst pallets were prepared and then characterized by N2 adsorption, X-ray Diffraction, Scanning Electron Microscope, and Temperature Programmed Reduction. The results showed the Brunaner, Emmett and Teller area of SiC was the lowest among the three supports prepared for testing. However, its reducibility showed improvement with use of cobalt acetate, as a precursor, rather than cobalt nitrates. Mechanical strength and behavior was checked by the hardness testing machine. Fischer Tropsch （FT） synthesis experiments were performed in the fixed bed reactor set at 450-500 K and 2.3-2.5 MPa using synthetic gas having HJCO ration = 2.0. FT synthesis showed that cobalt/silicon carbide catalyst gives high CO conversion and lower methane selectivity, compared to Co/A1203 and Co/TiO2, as well as high C5＋ selectivity of almost 90%. Moreover, its stability was enhanced by the addition of Zr02, as without this addition, the Co/SiC interactions are weaker and can cause carbon sintering, and thus, the deactivation rate to increase.

关键词： Fischer-Tropsch-synthesis clean coal alternate liquid fuel metallic catalysts & syngas.

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

COVIDX: Computer-aided diagnosis of COVID-19 and its severity prediction with raw digital chest X-ray scans

引用

Quantitative Biology 2022年第2期10卷 208-220页

作者： Wajid Arshad Abbasi Syed Ali Abbas Saiqa Andleeb Maryum Bibi Fiaz Majeed Abdul Jaleel Muhammad naveed Akhtar Computational Biology and Data Analysis Lab Department of Computer Sciences&Information TechnologyKing Abdullah CampusUniversity of Azad Jammu&KashmirMuzaffarabadAJ&K 13100Pakistan Biotechnology Lab Department of ZoologyKing Abdullah CampusUniversity of Azad Jammu&KashmirMuzaffarabadAJ&K 13100Pakistan Department of Software Engineering University of GujratGujrat 50700Pakistan Department of Computer Science (RCET)UETLahore 54000Pakistan Computational and Internet Services Division Pakistan Institute of Engineering and Applied Sciences(PIEAS)Islamabad 44000Pakistan

Background: Coronavirus disease (COVID-19) is a contagious infection caused by severe acute respiratory syndrome coronavirus-2 (SARS-COV-2) and it has infected and killed millions of people across the ***: In the absence or inadequate provision of therapeutic treatments of COVID-19 and the limited convenience of diagnostic techniques, there is a necessity for some alternate spontaneous screening systems that can easily be used by the physicians to rapidly recognize and isolate the infected patients to circumvent onward surge. A chest X-ray (CXR) image can effortlessly be used as a substitute modality to diagnose the ***: In this study, we present an automatic COVID-19 diagnostic and severity prediction system (COVIDX) that uses deep feature maps of CXR images along with classical machine learning algorithms to identify COVID-19 and forecast its severity. The proposed system uses a three-phase classification approach (healthy vs unhealthy, COVID-19 vs pneumonia, and COVID-19 severity) using different conventional supervised classification ***: We evaluated COVIDX through 10-fold cross-validation, by using an external validation dataset, and also in a real setting by involving an experienced radiologist. In all the adopted evaluation settings, COVIDX showed strong generalization power and outperforms all the prevailing state-of-the-art methods designed for this ***: Our proposed method (COVIDX), with vivid performance in COVID-19 diagnosis and its severity prediction, can be used as an aiding tool for clinical physicians and radiologists in the diagnosis and follow-up studies of COVID-19 infected ***: We made COVIDX easily accessible through a cloud-based webserver and python code available at https://***/view/wajidarshad/software and https://***/wajidarshad/covidx, respectively.

关键词： coronavirus COVID-19 radiology machine learning chest X-ray contagious infection

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

Antipyretic and anticonvulsant activity of n-hexane fraction of viola betonicifolia

引用

Asian Pacific Journal of Tropical Biomedicine 2013年第4期3卷 280-283页

作者： naveed Muhammad Muhammad Saeed Haroon Khan Naila Raziq Syed Muhammad Ashhad Halimi Department of Pharmacy University of Peshawar-25120 PeshawarPakistan Gandhara College of Pharmacy Gandhara UniversityPeshawarPakistan

Objective:To investigate the antipyretic and anticonvulsant activities of n-hexane fraction of Viola betonicifolia(***).Methods:The antipyretic effect was scrutinized using brewer's yeast induced pyrexia and anticonvlsion effect was tested using pentylenetetrazol and strychnine induced convulsion in ***:N-hexane fraction of *** demonstrated highly significant antipyretic activity during various assessment times(1-5 h)when challenged in yeast induced pyrexia *** effect was in a dose dependent manner with maximum attenuation(82.50%)observed at 300 mg/kg *** tested in pentylenetetrazol induced convulsion test,the 1st stage(Ear and facial twitching)and 2nd stage(Convulsive wave through the body)was 100%protected during 24 h at all the test doses(300,400 and 500 mg/kg i.p.),while the latency time of remaining stages was significantly *** maximum effect was observed by n-hexane fraction of *** at 400 and 500 mg/kg i.p.,as the latency time for generalized clonic-tonic seizure(5th stage)was increased up to 25.34 ***,n-hexane fraction of *** had no protection in strychnine induced convulsion ***:In conclusion,phytopharmacological studies provide scientific foundation to the folk uses of the plant in the treatment of pyrexia and neurological disorders.

关键词： Viola betonicifolia N-hexane fraction Antipyretic Anticonvulsant

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 Bulk‑Heterostructure Nanocomposite Electrolyte of Ce_(0.8)Sm_(0.2)O_(2‑δ)-SrTiO_(3) for Low‑Temperature Solid Oxide Fuel Cells

引用

Nano-Micro Letters 2021年第3期13卷 66-79页

作者： Yixiao Cai Yang Chen Muhammad Akbar Bin Jin Zhengwen Tu naveed Mushtaq Baoyuan Wang Xiangyang Qu Chen Xia Yizhong Huang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Key Laboratory of High Performance Fibers and ProductsEngineering Research Center of Technical TextilesMinistry of EducationCollege of Materials Science and EngineeringDonghua University201620 ShanghaiPeople’s Republic of China Key Laboratory of Ferro and Piezoelectric Materials and Devices of Hubei Province Faculty of Physics and Electronic ScienceHubei UniversityWuhan 430062HubeiPeople’s Republic of China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Republic of Singapore

Since colossal ionic conductivity was detected in the planar heterostructures consisting of fluorite and perovskite,heterostructures have drawn great research interest as potential electrolytes for solid oxide fuel cells(SOFCs).However,so far,the practical uses of such promising material have failed to materialize in SOFCs due to the short circuit risk caused by *** this study,a series of fluorite/perovskite heterostructures made of Sm-doped CeO2 and SrTiO3(SDC–STO)are developed in a new bulk-heterostructure form and evaluated as *** prepared cells exhibit a peak power density of 892 mW cm−2 along with open circuit voltage of 1.1 V at 550°C for the optimal composition of 4SDC–*** electrical studies reveal a high ionic conductivity of 0.05–0.14 S cm^−1 at 450–550°C,which shows remarkable enhancement compared to that of simplex *** AC impedance analysis,it has been shown that the small grain-boundary and electrode polarization resistances play the major roles in resulting in the superior ***,a Schottky junction effect is proposed by considering the work functions and electronic affinities to interpret the avoidance of short circuit in the SDC–STO *** findings thus indicate a new insight to design electrolytes for low-temperature SOFCs.

关键词： Bulk-heterostructure SOFC electrolyte Ionic conductivity Schottky junction Work function

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

Numerical Treatment for Stochastic Computer Virus Model

引用

Computer Modeling in Engineering & Sciences 2019年第8期120卷 445-465页

作者： Ali Raza Muhammad Shoaib Arif Muhammad Rafiq Mairaj Bibi Muhammad naveed Muhammad Usman Iqbal Zubair Butt Hafiza Anum Naseem Javeria Nawaz Abbasi Department of Mathematics Stochastic Analysis&Optimization Research GroupAir UniversityPAF Complex E-9IslamabadPakistan Faculty of Engineering University of Central Punjab LahorePakistan Department of Mathematics Comsats UniversityPark Road Chak Shahzad CampusIslamabadPakistan Faculty of Computing National College of Business Administration and Economics LahorePakistan

This writing is an attempt to explain a reliable numerical treatment for stochastic computer virus *** are comparing the solutions of stochastic and deterministic computer virus *** paper reveals that a stochastic computer virus paradigm is pragmatic in contrast to the deterministic computer virus *** of threshold number C^?hold in stochastic computer virus *** C^?1 shows virus persists in the computer ***,stochastic numerical methods fail to cope with large step sizes of *** suggested structure of the stochastic non-standard finite difference scheme(SNSFD)maintains all diverse characteristics such as dynamical consistency,boundedness and positivity as defined by *** numerical treatment for the stochastic computer virus model manifested that increasing the antivirus ability ultimates small virus dominance in a computer community.

关键词： Computer virus,euler maruyama scheme stochastic differential equations stochastic euler scheme stochastic runge-kutta scheme stochastic NSFD scheme stability

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：