检索结果-南通市图书馆

Multiclass recognition of Alzheimer’s and Parkinson’s disease using various machine learning techniques: A study

International Journal of Modeling, simulation, and scientific Computing 2022年第1期13卷 235-250页

作者： Chetan Balaji D.s.suresh Department of ECE Channabasaveshwara Institute of Technology Tumkur KarnatakaIndia Visvesvaraya Technological University BelagaviKarnatakaIndia

The aging population is primarily affected by Alzheimer’s disease(AD)that is an incur-able neurodegenerative *** is a need for an automated efficient technique to diagnose Alzheimer’s in its early *** techniques are used to diagnose *** and neuroimaging methodologies are widely used to highlight changes in the electrical activity of the brain signals that are helpful for early ***’s disease(PD)is a major neurological disease that results in an average of 50,000 new clinical diagnoses worldwide every *** voice features are majorly used as the main means to diag-nose *** major symptoms of PD are loss of intensity,the monotony of loudness and pitch,reduction in stress,unidentified silences,and *** though various innovative models are proposed by explorers about Alzheimer’s and Parkinson’s classifi-cation diseases,still there is a need for efficient learning methodologies and *** paper provides a review on using machine learning(ML)together with several fea-ture extraction techniques that is helpful in the early detection of AD with Parkinson’*** novelty and objective of this study are that the CAD technique is used to improve the accuracy of early diagnosis of *** proposed technique depends on the nonlinear process for data dimension reduction,feature removal,and classification using kernel-based support vector machine(sVM)*** dimension of the input space is radically diminished with kernel *** the learning set is labeled,it creates sense to utilize this information to make a dependable method of dropping the input space *** different techniques of ML are explained under the major approaches ***,artificial neural network(ANN),deep learning(DL),and ensemble methods.A comprehensive assessment is presented at sVM,ANN,and DL approaches for better detection of Alzheimer’s with PD highlighting future insights.

关键词： Electroencephalograph support vector machine Alzheimer’s disease control normal machine learning

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

Conservation form of Helbing's fluid dynamic traffic flow model

引用

Applied Mathematics and Mechanics(English Edition) 2011年第9期32卷 1109-1118页

作者：李书峰张鹏 s.C.WONG shanghai Institute of Applied Mathematics and Mechanics Shanghai University shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai University Department of Civil Engineering The University of Hong Kong

A standard conservation form is derived in this *** hyperbolicity of Helbing＇s fluid dynamic traffic flow model is proved,which is essential to the general analytical and numerical study of this *** the basis of this conservation form,a local discontinuous Galerkin scheme is designed to solve the resulting system *** evolution of an unstable equilibrium traffic state leading to a stable stop-and-go traveling wave is *** simulation also verifies that the model is truly improved by the introduction of the modified diffusion coefficients,and thus helps to protect vehicles from collisions and avoide the appearance of the extremely large density.

关键词： conservation form hyperbolicity local discontinuous Galerkin method stop-and-go wave

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

Biomarkers for Parkinson's Disease:Recent Advancement

引用

Neuroscience Bulletin 2017年第5期33卷 585-597页

作者： sharvari Lotankar Kedar s Prabhavalkar Lokesh K Bhatt Department of Pharmacology SVKM's Dr Bhanuben Nanavati College of PharmacyVile Parle(W)MumbaiIndia

As a multi-factorial degenerative disease, Parkinson＇s disease （PD） leads to tremor, gait rigidity, and hypokinesia, thus hampering normal living. As this disease is usually detected in the later stages when neurons have degenerated completely, cure is on hold, ultimately leading to death due to the lack of early diagnostic techniques. Thus, biomarkers are required to detect the disease in the early stages when prevention is possible. Various biomarkers providing early diagnosis of the disease include those of imaging, cerebrospinal fluid, oxidative stress, neuroprotection, and inflammation. Also, biomarkers, alone or in combination, are used in the diagnosis and evolution of PD. This review encompasses various biomarkers available for PD and discusses recent advances in their development.

关键词： Parkinson's disease· Imaging biomarkers ·Biochemical biomarkers - Clinical biomarkers Geneticbiomarkers

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

Effects of Zr substitution on structural,morphological,and magnetic properties of bismuth iron oxide phases

引用

Chinese Physics B 2017年第8期26卷 450-455页

作者： A Asif M Hassan s Riaz s Naseem s s Hussain Materials Growth and simulation Laboratory Department of PhysicsUniversity of the PunjabLahore-54590Pakistan Center of Excellence in solid state Physics University of the PunjabLahore-54590Pakistan

The present study involves co-precipitation method to grow un-doped and Zr-doped bismuth iron oxide with x_（Zr）=0.10–0.30. The molar solutions of ferric chloride（FeCl_3）, zirconyle chloride（ZrOCl_2）, and bismuth chloride（BiCl_3） are prepared in distilled water, and are allowed to react with sodium hydroxide（Na OH）. The synthesized powders are then converted into pellets, which are sintered at 500℃ for two hours in a muffle furnace. X-ray diffraction（XRD） shows multi-phase formation in un-doped and Zr doped samples. scanning electron microscope（sEM） depicts layered structure at low Zr concentration x_（Zr）= 0.10, while uniform surface with smaller grains and voids is observed at x_（Zr）= 0.20, but at x_（Zr）= 0.30, cracks and voids become prominent. The ferromagnetic nature of the un-doped sample is observed by vibrating sample magnetometer（VsM）, while paramagnetic behavior appears due to Zr doping. The ferromagnetism in un-doped sample is lost by Zr doping, which is due to the formation of additional Fe–O–Zr bonds that induce paramagnetic behavior.

关键词： co-precipitation multi-phases ferromagnetism paramagnetism BiFeO3

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’s Role in safety Management and Performance for the Road safety Practices

引用

International Journal of Transportation science and Technology 2014年第1期3卷 79-93页

作者： salim Keffane(s) Department of Psychology University Setif 2SetifAlgeria

Communication among organizations could play an important role in increasing road *** get in-depth knowledge of its role,this study measured managers’and employees’perceptions of the communication’s role on six safety management and performance criteria for road safety practices by conducting a survey using a questionnaire among 165 employees and 135 *** analysis using AMOs-19 software shows that some of the safety management road safety practices have high correlation with the safety performance,namely,from the six antecedents,only the safety training and safety promotion,closely correlate with the safety motivation,and only safety commitment,safety communication and feedback have close relations with the safety knowledge and safety behavior compliance,and only safety feedback has effective relations with the safety *** feedback is identified as the most important safety management issue to road safety practices and it would predict the level of safety knowledge,safety motivation,safety compliance and safety *** results of this study would help the concerned agencies/orgaizations in improving their ability to assess the road safety indicators and to the future development of the safety performance management for road safety practices in these agencies.

关键词： safety communication safety performance safety management safety behavior Road safety practices

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

On the MHD flow of fractional generalized Burgers' fluid with modified Darcy's law

引用

Acta Mechanica sinica 2007年第3期23卷 257-261页

作者： T.Hayat M.Khan s.Asghar Department of Mathematics Quaid-i-Azam University 45320Islamabad 44000Pakistan COMsATs Institute of Information Technology H-8 Islamabad 44000Pakistan

This work is concerned with applying the fractional calculus approach to the magnetohydrodynamic （MHD） pipe flow of a fractional generalized Burgers＇ fluid in a porous space by using modified Darcy＇s relationship. The fluid is electrically conducting in the presence of a constant applied magnetic field in the transverse direction. Exact solution for the velocity distribution is developed with the help of Fourier transform for fractional calculus. The solutions for a Navier-stokes, second grade, Maxwell, Oldroyd-B and Burgers＇ fluids appear as the limiting cases of the present analysis.

关键词： Modeling Generalized Burgers' fluid,Fractional calculus Exact solution

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

Hydromagnetic oscillatory Couette flow in rotating system with induced magnetic field

引用

Applied Mathematics and Mechanics(English Edition) 2014年第10期35卷 1331-1344页

作者： G.s.sETH s.M.HUssAIN s.sARKAR Department of Applied Mathematics Indian School of Mines Department of Mathematics O.P.Jindal Institute of Technology

This paper presents a study of hydromagnetic Couette flow of an incompress- ible and electrically conducting fluid between two parallel rotating plates, one of which is oscillating in its own plane. A uniform transverse magnetic field is used, and the induced magnetic field is taken into account. The exact solution to the governing equations is obtained in a closed form. The solution to the problem in the case of vanishing and small finite magnetic Prandtl numbers is also derived from the general solution. The asymp- totic behavior of the solution for large values of the frequency parameter is analyzed to gain some physical insights into the flow pattern. Expressions for the shear stress at both the oscillatory and stationary plates due to primary and secondary flows and mass flow rate in the primary and secondary flow directions are also obtained. The results of the fluid velocity and the induced magnetic field are presented. The shear stresses on the plates due to the primary and secondary flows and the corresponding mass flow rates are presented in a tabular form.

关键词： magnetic interaction parameter Ekman number frequency parameter,hydromagnetic stokes-Ekman boundary layer magnetic diffusion boundary layer

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

sendai Framework’s Global Targets A and B: Opinions from the Global Platform for Disaster Risk Reduction’s Ignite stage 2019

引用

International Journal of Disaster Risk science 2022年第5期13卷 651-663页

作者： Nibedita s.Ray-Bennett Krishna Clarke Daniel Mendez school of Business University of LeicesterLeicester LE17RHUK Avoidable Deaths Network University of LeicesterLeicester LE17RHUK Office of the President saint Michael Parish of Saint MichaelCaribbean Development BankBridgetown 11000Barbados

The sendai Framework for Disaster Risk Reduction 2015-2030 set seven global targets of which the first two targets are to reduce disaster deaths(target A) and diminish the number of affected people globally(target B)by *** realize these targets,the United Nations General Assembly’s Expert Working Group provided indicators to measure progress as well as terminologies for these targets in *** around these targets is *** article contributes to the understanding of the targets by exploring:(1) what are the conditions that may hinder achieving targets,as well as those that may accelerate their achievement at the national and local levels;and(2) which types of organizations should lead a country’s effort to reduce disaster deaths?These questions were answered by opinion survey research carried out at the sixth session of the Global Platform for Disaster Risk *** participants identified disaster risk reduction efforts,early warning systems,awareness,finance and investment(among others) as the important facilitating factors to achieve targets A and *** investment in human security,lack of response and coordination,uncertainty of climate change,poor information,lack of campaigns and low budget allocation(among others) are considered as the important hindering factors for these targets by the *** findings also suggest that the facilitating and hindering variables of targets A and B are interconnected with global target E(disaster risk governance and capacity building).The majority of the participants thought that it is the national government who should lead in a country’s effort to reduce disaster *** on these findings,a few recommendations have been made to improve policy and practice related to the indicators as well as to reimagine theories so that targets A and B can be realized in alignment with target E at the national and local levels by 2030.

关键词： Disaster deaths Disaster risk reduction Global Platform for Disaster Risk Reduction HealthEDRM Health system sendai Framework’s targets A and B

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

Automation in U.s. longwall coal mining: A state-of-the-art review

引用

International Journal of Mining science and Technology 2019年第2期29卷 151-159页

作者： syd s.Peng Feng Du Jingyi Cheng Yang Li West Virginia University school of Energy science and Engineering Henan Polytechnic University school of Mines China University of Mining and Technology College of Resource and safety Engineering China University of Mining and Technology (Beijing)

This paper reviews the development of U.s. longwall mining from an unknown to became the world standard in the past five decades with emphasis on automation. Large scale longwall face equipment were imported from Germany and United Kingdom to increase production in the 1970 s and great effort was made to improve them to suit U.s. conditions, rather than domestic market. Automation began with the development of electrohydraulic shields in 1984 and continue to present. Introduction of first generation semi-automated longwall system occurred in 1995 and step-to-step improvement continues to present following the development of sensor technology and internet of things(IOT). since then, emphasis on new development has been concentrated on the improvement of equipment reliability, miner's health and safety as well as production, including dust control techniques, proximity sensor, anti-collision and remote control. Automation is classified into two categories: automation of individual face equipment and automation of longwall system. The automation development of longwall system is divided into three stages: shearer-initiated-shield-advance(sIsA), semi-automated longwall system, and remote control shearer.

关键词： Longwall mining Automation shield shearer AFC

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

soft x-ray tomographic reconstruction of Heliotron J plasma for the study of magnetohydrodynamic equilibrium and stability

引用

Plasma science and Technology 2019年第6期21卷 72-78页

作者： s PUROHIT Y sUZUKI s OHDACHI s YAMAMOTO sOKENDAI The Graduate University for Advanced Studies Toki Gifu 509-5292 Japan National Institute for Fusion science Toki Gifu 509-5292 Japan Institute of Advanced Energy Kyoto University Gokasho Uji Kyoto 611-0011 Japan

The preparation for an experimental soft x-ray tomography study on the Heliotron J (H-J) machine is carried out,with the objectives of evaluating the capability of the current soft x-ray tomographic system in terms of the identification of different mode structures and their poloidal rotation,and the axis shift with different plasma and machine parameters,and fixing the physics goals for the experimental *** preparations were carried out via a simulated soft x-ray data set arising from different plasma conditions,such as magnetic islands,low beta and high *** x-ray tomography (sXT) is performed by the discrete pixel method including singular value decomposition and Phillips-Tikhonov regularization,to obtain clear and smooth *** H-J soft x-ray tomography results from simulated soft x-rays for the equilibrium H-J plasma sensed the magnetic axis shift clearly and an estimate was also *** reconstruction for mode structure m =1/n =1 was obtained along with the realization of the poloidal rotation of the *** reconstruction for the m =2/n =1 mode was not very clear for the current soft x-ray diagnostic *** mode identification was not possible due to the lack of *** sXT from the current soft x-ray diagnostic on H-J,the magnetic axis shift can be estimated and the m =1/n =1 mode can be *** of higher poloidal modes is difficult with the current design.

关键词： Heliotron J tomography soft x-ray magnetohydrodynamics

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：