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An efficient tool for Parkinson's disease detection and severity grading based on time-frequency and fuzzy features of cumulative gait signals through improved LSTM networks

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Medicine in Novel Technology and Devices 2024年第2期22卷 38-50页

作者： Farhad Abedinzadeh Torghabeh yeganeh modaresnia Seyyed Abed Hosseini Department of Biomedical Engineering Mashhad BranchIslamic Azad UniversityMashhadIran Department of Electrical Engineering Mashhad BranchIslamic Azad UniversityMashhadIran

Parkinson's disease(PD)is a widespread neurodegenerative condition that affects many individuals *** identification and monitoring of disease progression are crucial to effectively managing symptoms and preventing motor *** research proposes an automated PD diagnosis and severity-grading model based on time-frequency and fuzzy features using improved uni-directional and bi-directional long short-term memory networks with sensitive hyperparameters *** utilize vertical ground reaction force signals collected from Physionet's publicly available dataset recorded during regular and dual-task clinical trials of walking *** the cumulative signal of both feet was then utilized and segmented into 30-s windows without further ***,we extracted only four key time-frequency and fuzzy features from each segment,effectively capturing the signal's inherent *** optimization is employed in both detection and grading approaches to fine-tune the two critical hyperparameters:the initial learning rate and the number of hidden units in the *** detection phase yields an exceptional accuracy of 99.19%,surpassing state-of-the-art studies with the same *** the grading phase,classification based on the unified PD rating scale values achieves an accuracy of 92.28%.The proposed study delves into the potential of cumulative gait signals as a powerful diagnostic tool for PD,aiming to extract precise and intricate information by implementing straightforward and minimal processing *** method demonstrates significant effi-ciency in terms of complexity,cost,and energy consumption by utilizing a single-dimensional signal,eliminating the need for pre-processing steps,and limiting the features used for training.

关键词： Parkinson's disease grading Cumulative gait signal Vertical ground reaction force fuzzy feature Bayesian optimization Long short-term memory

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Cognitive-emotional feasibility of the effect of visual quality of building form on promoting the sense of place attachment(Case study:Cultural iconic buildings of Iran’s contemporary architecture)

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Frontiers of Architectural Research 2024年第1期13卷 37-56页

作者： Narmin Ariannia Negar Naseri Mansour yeganeh Digital Architecture and Artificial Intelligence Lab Department of ArchitectureTarbiat Modares UniversityTehranIran Architectural Design Modeling and Fabrication LabDepartment of ArchitectureTarbiat Modares UniversityTehranIran

The present research studies the relationship between place attachment and the perception of form’s visual quality in fifteen outstanding contemporary Iranian architectural cultural *** study puts forward the hypothesis that there is a correlation between the quality of building form and the sense of place attachment,in the sense that creating high visual quality through enhancing the quality of building form increases citizens’initial satisfaction with and subsequent attachment to the *** visual quality influences people’s experience of the environment and improves the quality of *** attachment highlights how people,on a personal level,recreate a sense of place for *** present study adopts the descriptive-analytical method as its theoretical framework and the survey as the empirical *** were developed using the Likert scale and distributed among experts and ordinary *** analysis using SPSS and the adoption of descriptive-analytical statistics,correlation analysis,and regression showed the relationship among the characteristics of *** results show a positive correlation between form and place attachment mediated through visual quality,and they are causal conditions for one *** addition,only some of the buildings under study evoke the same level of place attachment.

关键词： Visual preferences Environmental quality Environmental psychology Mental schemas Contemporary architecture

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Prediction of vertical displacement for a buried pipeline subjected to normal fault using a hybrid FEM-ANN approach

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Frontiers of Structural and Civil Engineering 2024年第3期18卷 428-443页

作者： Hedye JALALI Reza yeganeh KHAKSAR Danial MOHAMMADZADEH S. Nader KARBALLAEEZADEH Amir H.GANDOMI Department of Civil Engineering Architecture and UrbanismSadjad University of TechnologyPO Box ***MashhadIran Department of Civil Engineering Faculty of EngineeringEqbal Lahoori Institute of Higher EducationPO Box ***MashhadIran Faculty of Civil Engineering Architectureand ArtScience and Research Branch of Islamic Azad UniversityPO Box ***TehranIran Faculty of Engineering&Information Technology University of Technology SydneyUltimoNSW 2007Australia University Research and Innovation Center(EKIK) Óbuda UniversityBudapest 1034Hungary

Fault movement during earthquakes is a geotechnical phenomenon threatening buried pipelines and with the potential to cause severe damage to critical ***,effective prediction of pipe displacement is crucial for preventive management *** study aims to develop a fast,hybrid model for predicting vertical displacement of pipe networks when they experience *** this study,the complex behavior of soil and a buried pipeline system subjected to a normal fault is analyzed by using an artificial neural network(ANN)to generate predictions the behavior of the soil when different parameters of it are *** this purpose,a finite element model is developed for a pipeline subjected to normal fault *** data bank used for training the ANN includes all the critical soil parameters(cohesion,internal friction angle,Young’s modulus,and faulting).Furthermore,a mathematical formula is presented,based on biases and weights of the ANN *** results show that the maximum error of the presented formula is 2.03%,which makes the proposed technique efficiently predict the vertical displacement of buried pipelines and hence,helps to optimize the upcoming pipeline projects.

关键词： buried pipelines normal Fault finite element method multilayer perceptron neural network formulation

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Enhanced oxidation and overheating resistance of the extruded Mg–Zn–Al–Mn magnesium alloy by Calcium addition

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Journal of Magnesium and Alloys 2023年第4期11卷 1276-1291页

作者： Hanieh yeganeh Ahmad Bahmani Mehrab Lotfpour Mehdi Malekan Masoud Emamy Behzad Nayebi Kwang Seon Shin School of Metallurgy and Materials Engineering College of EngineeringUniversity of TehranP.O.Box 11155-4563TehranIran Department of Advanced Materials and Renewable Energies Iranian Research Organization for Science and TechnologyTehranIran Department of Mechanical Engineering University of NevadaRenoRenoNV 89557USA Advanced Research and Technology of Magnesium(ARTofMag)Co. TehranIran Research Institute of Advanced Materials School of Materials Science and EngineeringSeoul National UniversityGwanak-guSeoul 08826Republic of Korea

The effects of Ca addition on the microstructure and oxidation properties of a new Mg alloy were *** oxidation behavior of the alloys was analyzed by thermal analysis and material characterization of the alloys exposed in flame environment;and both electrical and induction ***,the surface layers were characterized using field emission scanning electron microscopy,and X-ray diffraction *** was found that increasing the Ca addition reduces the grain size and increases the fraction of the secondary phases,and enhances the mechanical ***,increasing the Ca contents resulted in the formation of a dense CaO/MgO layer on the surface prohibited the oxygen diffusion and assisted in protection of the substrate against further ***,ignition temperature was increased from 680℃ to 890℃ after addition of the Ca *** mechanical properties and ignition behavior of the current materials was compared with the literature which it showed an excellent combination of the properties in the developed alloys.

关键词： Mg alloys Oxidation properties Ca addition Microstructure Intermetallic phases

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Nickel doped zinc oxide nanoparticles produced by hydrothermal decomposition of nickel-doped zinc hydroxide nitrate

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Particuology 2012年第4期10卷 492-496页

作者： Mohammad yeganeh Ghotbi Nanomaterials and Nanotechnology Program Ceramic Engineering DepartmentFaculty of EngineeringMalayer UniversityMalayerIran

Zinc hydroxide nitrate, an anionic exchanger layered material, undoped as well as doped with 2-10% nickel, was synthesized by using a pH-controlled precipitation method. The layered materials were then used to produce the undoped and nickel-doped zinc oxides by hydrothermal-treatment. X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy confirmed the formation of pure phase undoped and nickel-doped layered materials, as well as the products of the hydrothermal- treated materials, nanostructured zinc oxides. Optical studies of the nanostructured zinc oxides showed a decrease in band gap with increasing content of the doping agent, nicke~.

关键词： NanostructureNickel doped zinc oxideChemical synthesisBand gap

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Multi-criteria prioritization of the renewable power plants in Australia using the fuzzy logic in decision-making method(FMCDM)

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Clean Energy 2022年第1期6卷 16-34页

作者： Amin Aryanfar Aslan Gholami Payam Ghorbannezhad Bijan yeganeh Mahdi Pourgholi Majid Zandi Svetlana Stevanovic Faculty of Mechanical and Energy Engineering Shahid Beheshti UniversityTehranIran Faculty of New Technologies and Energy Engineering Shahid Beheshti UniversityTehranIran Faculty of Civil Water&Environmental EngineeringShahid Beheshti UniversityTehranIran Centre for Air Pollution Energy and Health ResearchGlebeNew South Wales 2037Australia Faculty of Electrical Engineering Shahid Beheshti UniversityTehranIran Faculty of Science Engineering&Built EnvironmentSchool of EngineeringDeakin UniversityGeelongVictoria 3220Australia

The presented study focused on developing an innovative decision-making framework to select the best renewable-power-plant technologies,considering comprehensive techno-economic and environmental *** to the favourable conditions,Australia was selected as the case study.A fuzzy-logic method and analytical hierarchy process were applied to prioritize different renewable-energy power *** techno-economic factors included levelized cost of energy,initial cost,simple payback time,and operation and maintenance costs along with environmental factors including carbon payback time,energy payback time and greenhouse-gas emissions were used to rank the power *** results showed that the capital cost and simple payback time had the highest priority from an economic point of *** comparison,greenhouse-gas emissions and carbon payback time were the dominant environmental *** analysis results provided economic and environmental priority tables for developing different power plants in the current state and a future scenario by *** fuzzy results and pairwise composite matrix of alternatives indicated that the onshore wind,offshore wind,single-axis tracker polycrystalline photovoltaic,single-axis tracker monocrystalline photovoltaic,fix-tilted polycrystalline photovoltaic and fix-tilted monocrystalline photovoltaic scored the highest in the current *** contrast,by 2030,the single-axis tracker photovoltaic power plants will be the best choice in the future scenario in ***,the results were used and analysed to recommend and suggest several policy implementations and future research studies.

关键词： photovoltaic wind fuzzy logic analytical hierarchy process prioritization

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热处理对AISI321奥氏体不锈钢微观结构和纹理及其腐蚀行为的影响

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Journal of Central South University 2022年第11期29卷 3557-3580页

作者： M.SALEHI M.ESKANDARI M.yeganeh Department of Materials Science and Engineering Faculty of EngineeringShahid Chamran University of AhvazAhvaz ***Iran

本文研究了热处理对AISI 321奥氏体不锈钢(ASS)管微观结构、晶粒尺寸和纹理及其腐蚀行为的影响。将原始的粗粒径钢试样((35±3)μm)先在液氮温度下冷轧减厚20%、50%和90%,随后在750、950和1050℃下退火处理15 min。试样在750℃退火后发... 详细信息

本文研究了热处理对AISI 321奥氏体不锈钢(ASS)管微观结构、晶粒尺寸和纹理及其腐蚀行为的影响。将原始的粗粒径钢试样((35±3)μm)先在液氮温度下冷轧减厚20%、50%和90%,随后在750、950和1050℃下退火处理15 min。试样在750℃退火后发生再结晶,随着退火温度升高至950和1050℃,出现二次再结晶(晶粒异常生长)和晶粒生长。结果表明,在厚度减少20%后,由于γ-纤维的增强和Σ3边界的形成,试样的耐蚀性(21.1 kΩ·cm^(2))较初始条件(3.9 kΩ·cm^(2))显著提高。当轧制厚度减少90%时,试样的耐蚀性降低,但仍表现出比原始试样更高的耐蚀性。在750和950℃退火处理冷轧减厚90%的试样中,微观组织分布更加均匀,Goss和黄铜纹理成分出现,晶粒细化,耐蚀性比原始试样更高。经1050℃退火处理后,试样粒径明显增大((112±76)μm),微观组织分布不均匀,耐蚀性最低(1.3 kΩ·cm^(2))。

关键词：腐蚀纹理微观结构热处理不锈钢

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冷轧及退火对310S奥氏体不锈钢的微观结构和组织的影响:基于X射线和电子背散射衍射分析

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Journal of Central South University 2023年第3期30卷 763-785页

作者： R.B.HEIDARI M.ESKANDARI M.yeganeh Department of Materials Engineering Faculty of EngineeringShahid Chamran University of AhvazAhvaz ***Iran

本文研究了热处理对310S奥氏体不锈钢的微观结构和组织的影响。对样品材料进行冷轧,使其厚度分别减少20%、50%和90%,然后在1023、1223和1323 K下退火5、15和30 min。在厚度减少20%后,奥氏体内产生孪晶,且可观察到形变诱发的α’马氏体,... 详细信息

本文研究了热处理对310S奥氏体不锈钢的微观结构和组织的影响。对样品材料进行冷轧,使其厚度分别减少20%、50%和90%,然后在1023、1223和1323 K下退火5、15和30 min。在厚度减少20%后,奥氏体内产生孪晶,且可观察到形变诱发的α’马氏体,孪晶的体积分数大于α’马氏体。当厚度变化由50%增加到90%,α’马氏体的体积分数由11%增加到69%,孪晶被α’马氏体取代。发生形变后奥氏体相主要为Brass、Goss和S织构,α’马氏体的主要纹理为R-Cu、R-cube、F和E组份。随着形变量增大,Brass织构增加,Goss织构减少。退火过程中,马氏体向奥氏体转变,并发生了再结晶,使Goss和Brass再结晶织构的体积分数增加。材料退火后的结构与冷轧后的大致相同。1223 K下退火5 min的马氏体转变速度明显高于1023 K下的。在1023 K下退火5 min,由于马氏体不完全转变和初级再结晶,未能检测到等轴组织。获得超细晶粒组织的最佳退火温度为1023 K,退火时间为15 min。在1173 K和1273 K时出现快速再结晶和晶粒生长。

关键词： 310S不锈钢形变退火电子背散射衍射微观结构组织

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Barrier height and ideality factor dependency on identically produced small Au/p-Si Schottky barrier diodes

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Journal of Semiconductors 2010年第7期31卷 16-21页

作者： M.A.yeganeh S.H.Rahmatollahpur Faculty of Physics Baku State UniversityAcademic Zahid X■lilov ksi-23AZ 1148BakuAzerbaijan Departments of Physics Sharif University of Technology11365-9567TehranIran

Small high-quality Au/P-Si Schottky barrier diodes（SBDs） with an extremely low reverse leakage current using wet lithography were *** effective barrier heights（BHs） and ideality factors from current-voltage （Ⅰ-Ⅴ） characteristics were measured by a conducting probe atomic force microscope（C-AFM）.In spite of the identical preparation of the diodes there was a diode-to-diode variation in ideality factor and barrier height *** extrapolating the plots the built in potential of the Au /p-Si contact was obtained as V_（bi）=0.5425 V and the barrier height valueΦ_（b（c-V）） was calculated to beΦ_（B（C-V））=0.7145 V for Au/*** is found that for the diodes with diameters smaller than 100μm,the diode barrier height and ideality factor dependency to their diameters and correlation between the diode barrier height and its ideality factor are nonlinear,where similar to the earlier reported different metal semiconductor diodes in the literature,these parameters for the here manufactured diodes with diameters more than 100μm are also *** on the very obvious sub-nanometer C-AFM produced pictures the scientific evidence behind this controversy is also explained.

关键词： Schottky barrier diodes conducting probe-atomic force microscope barrier height and ideality factor

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Territorial behaviors and integration between buildings and city in urban public spaces of Iran's metropolises

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Frontiers of Architectural Research 2018年第4期7卷 588-599页

作者： Mansour yeganeh Mansoreh Kamalizadeh Department of Architecture Tarbiat Modares UniversityTehranIran

This paper studies the relationship between citizens׳ territorial behaviors and the levels and criteria of "integration of buildings and city in urban public spaces"(IBCUPS). The hypothesis of this research is that the levels of perception and integration criteria, of city and its buildings, will diverse based on citizens territorial behaviors. This theoretical proposition is analyzed in 7 urban streets at 3 Metropolises of Iran, by descriptive-analytical research method, followed by survey to serve the empirical aspect of research, which conducts within the framework of fuzzy logic. The results show a co-variation between the levels of territorial behavior and perception of integration. However, the criteria of integration between buildings and city were different in various urban public spaces according to the levels and types of citizens׳ territorial behaviors.

关键词： Tehran Tabriz Mashhad Territoriality Public Space Quality Integrity of public spaces

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