检索结果-南通市图书馆

Discrete Choice Models and Artificial Intelligence Techniques for Predicting the Determinants of Transport Mode Choice--A Systematic Review

引用

Computers, Materials & Continua 2024年第11期81卷 2161-2194页

作者： Mujahid ali Department of Transport Systems Traffic Engineering and LogisticsFaculty of Transport and Aviation EngineeringSilesian University of TechnologyKatowice40019Poland

Forecasting travel demand requires a grasp of individual decision-making ***,transport mode choice(TMC)is determined by personal and contextual factors that vary from person to *** characteristics have a substantial impact on travel behavior(TB),which makes it important to take into account while studying transport *** statistical techniques frequently presume linear correlations,but real-world data rarely follows these presumptions,which may make it harder to grasp the complex *** systematic review was conducted to examine how machine learning(ML)approaches might successfully capture nonlinear correlations that conventional methods may ignore to overcome such *** in-depth analysis of discrete choice models(DCM)and several ML algorithms,datasets,model validation strategies,and tuning techniques employed in previous research is carried out in the present ***,the current review also summarizes DCM and ML models to predict TMC and recognize the determinants of TB in an urban area for different transport *** two primary goals of our study are to establish the present conceptual frameworks for the factors influencing the TMC for daily activities and to pinpoint methodological issues and limitations in previous *** a total of 39 studies,our findings shed important light on the significance of considering factors that influence the *** adjusted kernel algorithms and hyperparameter-optimized ML algorithms outperform the typical ML ***(random forest),SVM(support vector machine),ANN(artificial neural network),and interpretable ML algorithms are the most widely used ML algorithms for the prediction of TMC where RF achieved an R2 of 0.95 and SVM achieved an accuracy of 93.18%;however,the adjusted kernel enhanced the accuracy of SVM 99.81%which shows that the interpretable algorithms outperformed the typical *** sensitivity analysis indicates that the most sign

关键词： Machine learning techniques AI transport mode choice discrete choice model sustainable transportation

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

Vibration analysis of fluid-conveying multi-scale hybrid nanocomposite shells with respect to agglomeration of nanofillers

引用

Defence Technology（防务技术） 2021年第1期17卷 212-225页

作者： Farzad Ebrahimi ali Dabbagh Department of Mechanical Engineering Faculty of EngineeringImam Khomeini International UniversityQazvinIran School of Mechanical Engineering College of EngineeringUniversity of TehranTehranIran

The vibration problem of a fluid conveying cylindrical shell consisted of newly developed multi-scale hybrid nanocomposites is solved in the present manuscript within the framework of an analytical *** consistent material is considered to be made from an initial matrix strengthened via both macro-and nano-scale *** influence of nanofillers’agglomeration,generated due to the high surface to volume ratio in nanostructures,is included by implementing Eshelby-Mori-Tanaka homogenization ***,the equivalent material properties of the carbon nanotube reinforced(CNTR)nanocomposite are coupled with those of CFs within the framework of a modified rule of *** the other hand,the influences of viscous flow are covered by extending the Navier-Stokes equation for cylinders.A cylindrical coordinate system is chosen and mixed with the infinitesimal strains of first-order shear deformation theory of shells to obtain the motion equations on the basis of the dynamic form of principle of virtual ***,the achieved governing equations will be solved by Galerkin’s method to reach the natural frequency of the structure for both simply supported and clamped boundary *** a set of illustrations,effects of each parameter on the dimensionless frequency of nanocomposite shells will be shown graphically.

关键词： Vibration Agglomeration effect Multi-scale hybrid nanocomposites Galerkin’s solution Viscous fluid flow

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

Observation of saltation activity at Tazhong area in Taklimakan Desert,China

引用

Journal of Arid Land 2013年第1期5卷 32-41页

作者： ali MAMTIMIN Institute of Desert Meteorology China Meteorological Administration Desert Atmosphere and Environment Observation Experiment of Taklimakan Station

A two-year field observation of saltation activity was carried out at Tazhong area, the hinterland area of the Taklimakan Desert with highly frequent dust storms. From 1 September 2008 to 31 August 2010, a piezoelectric saltation sensor （Sensit） was used to continuously collect the data on saltation activity at a level sand surface. Analysis on the data suggests that saltation activity can occur at any time of the year when conditions are favorable; however, the necessary conditions are rarely satisfied in most time. In the daytime of spring or summer, saltation activity can persist even over a continuous one-hour-or-so period. It is found that, from 1 September 2008 to 31 August 2010, saltation activity accounts for more than 3% of the total yearly time, and it tends to peak in spring and summer months with strong winds. During winter months when winds are weak, however, it is often at a minimum. It seems that precipitation does not appear to be significant in reducing saltation activity in arid regions like Tazhong.

关键词： saltation activity aeolian sand transport piezoelectric saltation sensor (Sensit) Tazhong Taklimakan Desert

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

Projections onto Invariant Subspaces of Some Banach Algebras

引用

Acta Mathematica Sinica,English Series 2008年第7期24卷 1089-1096页

作者： ali GHAFFARI Department of Mathematics Semnan UniversitySemnanIran

In this paper, among other things, the author studies the weak^＊-closed left translation invariant complemented subspace of semigroup algebras and group algebras. Also, the author studies the relationships between pr... 详细信息

关键词： Banach algebras complemented locally compact group translation invariant weak^*- closed

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

Topology optimization of shear wall structures under seismic loading

引用

Earthquake Engineering and Engineering Vibration 2020年第1期19卷 105-116页

作者： Pooya Zakian ali Kaveh Department of Civil Engineering Faculty of EngineeringArak UniversityArak 38156-8-8349Iran Centre of Excellence for Fundamental Studies in Structural Engineering Iran University of Science and TechnologyNarmakTehran-16Iran

A topology optimization formulation is developed to find the stiffest structure with desirable material distribution subjected to seismic loads. Finite element models of the structures are generated and the optimality criteria method is modified using a simple penalty approach and introducing fictitious strain energy to simultaneously consider both material volume and displacement constraints. Different types of shear walls with/without opening are investigated. Additionally, the effects of shear wall-frame interaction for single and coupled shear walls are studied. Gravity and seismic loads are applied to the shear walls so that the definitions provide a practical approach for locating the critical parts of these structures. The results suggest new viewpoints for architectural and structural engineering for placement of openings.

关键词： topology optimization seismic loads shear wall minimum compliance multiple constraints fi nite element analysis

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 robust principal component analysis-based approach for detection of a stator inter-turn fault in induction motors

引用

Protection and Control of Modern Power Systems 2022年第1期7卷 714-737页

作者： ali Namdar School of Electrical and Computer Engineering Shiraz UniversityShirazIran

Health condition monitoring of induction motors is important because of their vital role and wide us in a variety of industries.A stator inter-turn fault(SITF)is considered to be the most common electrical failure according to statisti-cal *** this paper,an algorithm for the detection of an SITF is *** is based on one of the blind source separation techniques called principal component analysis(PCA).The proposed algorithm uses PCA to discriminate between the faulty components of motor current signatures and motor voltage signatures from other *** standard deviation of one of the decomposed vectors is used as a statistical SITF *** proposed criterion is robust to non-fault conditions including voltage quality problems and large mechanical load changes as well as harmonic contaminants in the voltage *** addition,with a straightforward and low computational burden in the fault detection process,the proposed method is computationally *** evaluate the performance of the proposed method,large numbers of practical and simulation scenarios are considered,and the results confrm the good performance,high degree of accuracy,and good convergence speed of the proposed method.

关键词： Induction motors(IMs) Stator inter-turn fault(SITF) Voltage quality problem Principal component analysis(PCA)

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

Colonoscopic evaluation of minimal rectal bleeding in average-risk patients for colorectal cancer

引用

World Journal of Gastroenterology 2008年第42期14卷 6536-6540页

作者： Shahriar Nikpour ali ali Asgari Department of InternalMedicine Loghman Hakim Hospital Shaheed BeheshtiUniversity of Medical Sciences Tehran Iran

AIM: To assess the prevalence of clinically signifi cant lesions in patients with minimal bright red bleeding per rectum (BRBPR). METHODS: Consecutive outpatients prospectively underwent colonoscopy at Loghman Hakim Hospital, Tehran. Minimal BRBPR was defi ned as small amounts of red blood after wiping or in the toilet bowl. Patients with the following alarm signs were excluded: Positive personal history of colorectal neoplasms or inflamma-tory bowel disease (IBD), positive fi rst degree family history of colorectal neoplasms, history of altered bow- el habits, recent signifi cant weight loss, and presence of iron defi ciency anemia. Neoplastic polyps, colorectal carcinoma, and IBD were def ined as signif icant lesions. RESULTS: A total of 402 patients (183 female and 219 male, aged 43.6 ± 15.7 years) were studied. Hemorrhoids (54.2%), anal fi ssures (14.2%) and ul-cerative colitis (14.2%) were the most common lesions and colonoscopy was normal in 8.0%. Signifi cant le-sions were found in 121 (30.1%) patients, including 26 patients (6.5%) with adenocarcinoma and 30 (7.5%) with adenomatous polyps. Almost all patients with signifi cant lesions had at least one lesion in the distal colon; an adenocarcinoma and an adenomatous polyp in the proximal colon were found in 2 patients with hemorrhoids. CONCLUSION: Flexible sigmoidoscopy appears to be sufficient for the evaluation of average risk patients with minimal BRBPR. Rigid sigmoidoscopy may be used as an alternative in patients less than 40 years of age in settings where the former is not available. Thechoice of colonoscopy over flexible sigmoidoscopy in patients aged over 50 years should be individualized.

关键词： Gastrointestinal hemorrhage Colonoscopy Colorectal neoplasms Inflammatory bowel disease

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 P.Q.-Baer Skew Generalized Power Series Modules

引用

Algebra Colloquium 2022年第3期29卷 405-418页

作者： ali Majidinya Department of Mathematical Sciences Salman Farsi University of Kazerun KazerunP.O.Box 73175-457Iran

For a ring R and a strictly totally ordered monoid(S,≤),letω:S→End(R)be a monoid homomorphism and M an(S,ω)-weakly rigid right R-module(i.e.,for any elements m∈M,b∈R and s∈S,mRb=0 if and only if mω(s)(Rb)=0),where End(R)is the ring of ring endomorphisms of *** is shown that the skew generalized power series module M[[S]]_(R[[S,ω]])is a principally quasi-Baer module if and only if the annihilator of every submodule generated by an S-indexed subset of M is generated by an idempotent as a right ideal of *** a consequence we deduce that for an(S,ω)-weakly rigid ring R,the skew generalized power series ring R[[S,ω]]is right principally quasi-Baer if and only if R is right principally quasi-Baer and any S-indexed subset of right semicentral idempotents in R has a generalized S-indexed join in *** range of previous results in this area is expanded by these results.

关键词： module of skew generalized power series strictly ordered monoid principally quasi-Baerring weaklyrigidmodule

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

Extended Corbet Diagram of HMXBs,LMXBs and radio pulsar binaries

引用

Science China(Physics,Mechanics & Astronomy) 2010年第9期53卷 1726-1731页

作者： ali Esamdin Urumqi Observatory National Astronomical ObservatoriesChinese Academy of Sciences

The evolutionary scenario of neutron star binaries is still an essential enigma in both stellar astrophysics and high energy *** order to explore the scenario,we include the accumulation of data on the orbits and spins of compact binaries in multi-wavelength ranging from radio to X-ray,such as radio pulsar binaries,HMXBs,and LMXBs,filling them into the so called "Corbet Diagram" which initially investigated the period of orbit(Porb)～the period of spin(Pspin) correlation of *** find that the evolutionary scenario comes more clearly and makes strong confirmation of the connection between LMXBs and radio pulsar binaries,predicted by the recycle ***,the origins of radio pulsar binaries sre still *** Induced Collapse(AIP) process may be a mechanism which can explain the origin of the binary millisecond pulsars with relatively longer orbital periods.A correlation of P1/3orb～P-1spin of LMXBs and radio pulsar binaries may exist.

关键词： neutron star X-ray binary pulsar

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

DeepRadiation:An intelligent augmented reality platform for predicting urban energy performance just through 360 panoramic streetscape images utilizing various deep learning models

引用

Building Simulation 2023年第3期16卷 499-510页

作者： ali Nakhaee Arefe Paydar Department of Architecture Architecture SchoolCollege of Fine ArtsUniversity of TehranTehran ***Iran

Urban energy simulation is critical for understanding and managing energy performance in *** this research,we design a novel framework called DeepRadiation,to enable automatic urban environmental performance *** incorporating deep learning strategies,DeepRadiation predicts solar radiation on an urban scale using just panoramic streetscape images without any 3D modeling and *** York City was chosen as the case study for this *** is comprised of three different deep learning models organized into two *** first stage,named DeepRadiation modeling,serves as the framework's *** this stage,solar radiation analysis was performed using a Pix2Pix model,a type of conditional generative adversarial networks(GANs).After extracting GIS data and performing energy simulation analysis to prepare the dataset,the Pix2Pix model was trained on 10000 paired panoramic depth images of streetscapes with only building blocks and related panoramic images of streetscapes with only solar radiation *** GAN generator evaluation measures named qualitative evaluation and quantitative evaluation were used to validate the trained Pix2Pix *** demonstrated high levels of accuracy(qualitative evaluation:93%,quantitative evaluation:89%).DeepRadiation application as the DeepRadiation's sescond stage is the framework's *** this stage,two convolutional neural network(CNN)models(DeepLabv3 and MiDaS)were used to perform computer vision tasks on panoramic streetscape images,such as semantic segmentation and depth *** DeepRadiation application stage allows urban designers,architects,and urban policymakers to use the DeepRadiation framework and experience the final output via augmented reality.

关键词： automating urban energy simulation solar radiation analysis deep learning Pix2Pix computer vision augmented reality

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：