International Journal of Engineering and Industries最新文献_第9页

Effects of Core Materials and Operating Parameters on Core Losses in a Brushless DC Motor 铁心材料和运行参数对无刷直流电动机铁心损耗的影响

International Journal of Engineering and Industries Pub Date : 2011-03-31 DOI: 10.4156/IJEI.VOL2.ISSUE1.7

W. Tsai

引用次数: 10

Calculation of Electromagnetic Fields in Electrical Machines using FiniteElements Method 用有限元法计算电机电磁场

International Journal of Engineering and Industries Pub Date : 2011-03-31 DOI: 10.4156/IJEI.VOL2.ISSUE1.3

V. Šarac, G. Stefanov

引用次数: 18

Detecting Moving Objects Based on Fuzzy Non- Symmetric Membership Function in Color Space 基于色彩空间模糊非对称隶属函数的运动目标检测

International Journal of Engineering and Industries Pub Date : 2011-03-31 DOI: 10.4156/IJEI.VOL2.ISSUE1.8

Jing Wu, Youfu Wu

引用次数: 1

Design of the Electrical Drive for the High-Pressure GDI Injector in a 500cc Motorbike Engine 500cc摩托车发动机高压GDI喷油器电传动设计

International Journal of Engineering and Industries Pub Date : 2011-03-31 DOI: 10.4156/ijei.vol2.issue1.9

W. Tsai, Pengcheng Yu

{"title":"Design of the Electrical Drive for the High-Pressure GDI Injector in a 500cc Motorbike Engine","authors":"W. Tsai, Pengcheng Yu","doi":"10.4156/ijei.vol2.issue1.9","DOIUrl":"https://doi.org/10.4156/ijei.vol2.issue1.9","url":null,"abstract":"In order to meet future emission regulations, improve the power and reduce fuel consumption of an engine, a high-pressure GDI injector is gradually replacing the conventional port fuel injector as it is able to provide fuel injection with a more effective fuel spray atomization and tip penetration. Engine performance can therefore, be improved by using such a high-pressure swirl injector. In order to fully utilize the advantages of the GDI injector, the electric driving circuit is required to be designed with a faster response and finer precision control. In this paper, a programmable injector driving circuit for various high-pressure GDI injectors is designed and presented. A Comparison between two driving strategies of GDI injectors is summarized. Experimental tests for the designed electric driving circuit are investigated to verify its feasibility. The test of the electric driving circuit for the injection quantity of the GDI injector is under the conditions of 10 MPa fuel pressures, 1200-2000μs injection pulse duration and DC 70V executing power voltage. The GDI injector coils are driven under three pulse width (12/5/3A) peak and holding current waveforms to generate the electromagnetic force to draw back and hold the nozzle needle of the injector. Also, PWM control is introduced to the 3A holding current during the last pulse duration for quickening the cut-off response time of the GDI injector. Results show that this electric driving circuit is capable of operating stably and assures the accurate injection quantity of the gasoline direct injector.","PeriodicalId":223554,"journal":{"name":"International Journal of Engineering and Industries","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131365915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

Impacts of Signal System Timings on Rain Related Congestion 信号系统配时对与雨有关的挤塞的影响

International Journal of Engineering and Industries Pub Date : 2011-03-31 DOI: 10.4156/IJEI.VOL2.ISSUE1.1

A. Sullivan, V. Sisiopiku, Suman Reddy Surhabi

{"title":"Impacts of Signal System Timings on Rain Related Congestion","authors":"A. Sullivan, V. Sisiopiku, Suman Reddy Surhabi","doi":"10.4156/IJEI.VOL2.ISSUE1.1","DOIUrl":"https://doi.org/10.4156/IJEI.VOL2.ISSUE1.1","url":null,"abstract":"It is known that inclement weather can affect traffic volumes, vehicle speeds, speed variance, saturation flow rates, and sometimes discharge rates from traffic signals. These parameters in turn can have a significant impact on the efficiency of traffic signal timing plans. Timing plans developed for dry conditions with good visibility may not be as effective under wet conditions with poor visibility, even for the same traffic volumes. Previous studies have looked at the effects of poor weather on traffic signal efficiency but they have focused primarily on winter weather conditions involving snow and ice, which have much more dramatic impacts on traffic flow. In regions like the South, rain is the primary adverse weather event and even though its effects on traffic flow may be smaller than snow or ice, its impacts can still be seen. This study sought to assess the impact of rain on traffic flow and determine whether there can be a meaningful benefit to developing and implementing signal timing plans specifically for rain events. Using simulations for two study corridors in Birmingham, Alabama, it was found that moderate and heavy rain events do impact traffic flow, increasing stops and average delays up to 6% compared to dry conditions. Signal timing plans optimized for wet conditions were found to reduce these delays, though in absolute terms the benefits were modest. It was found, however, that the effectiveness of rain-specific timing plans depended to a large extent on prevailing traffic volumes. An evaluation of potential costs and benefits resulting from rain-optimized signal timing plans found that the net benefits, at least in the two study corridors, are questionable. The analysis found that projected costs over a five-year life cycle would significantly exceed potential benefits. Rain-specific timing plans may have useful applications in certain corridors but the potential benefits and costs should be carefully evaluated beforehand.","PeriodicalId":223554,"journal":{"name":"International Journal of Engineering and Industries","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121505495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

NURBS Method and Its Application in Location and Federate Controlling System NURBS方法及其在定位与联邦控制系统中的应用

International Journal of Engineering and Industries Pub Date : 2011-03-31 DOI: 10.4156/IJEI.VOL2.ISSUE1.6

Chen Liang-ji

引用次数: 1

Finding Opinion Strength Using Fuzzy Logic on Web Reviews 利用模糊逻辑在网络评论中寻找意见强度

International Journal of Engineering and Industries Pub Date : 2011-03-31 DOI: 10.4156/IJEI.VOL2.ISSUE1.5

Animesh Kar, D. Mandal

{"title":"Finding Opinion Strength Using Fuzzy Logic on Web Reviews","authors":"Animesh Kar, D. Mandal","doi":"10.4156/IJEI.VOL2.ISSUE1.5","DOIUrl":"https://doi.org/10.4156/IJEI.VOL2.ISSUE1.5","url":null,"abstract":"Determining the polarity and strength of opinions is an important research area over the last few years. The work challenges on opinion sentences and opinion holder extraction, opinion polarity judgment and also to measure the strength of polarity. In this paper we propose a convenient way using fuzzy techniques for analyzing opinion content in a review; our main goal is to analyze and to evaluate the sentiment in the review into a score for decision-making. The web contains product reviews and consumers are often forced to wade through many on-line reviews in order to make a product choice. We use techniques that decompose the review sentences and evaluate the individual characteristics of a product. Our task is performed in three steps: (1) mining product features that have been commented by customers; (2) identifying opinion sentences in each review and extracting the opinion phrases in each opinion sentence; (3) to measure the strength of opinion phrases to summarize the results. This paper introduces FOM (Fuzzy Opinion Miner), a supervised opinion orientation detection system that mines reviews to build a model of important product features, their evaluation by reviewers and the over all importance of the reviews.","PeriodicalId":223554,"journal":{"name":"International Journal of Engineering and Industries","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116193464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 46

Advanced Road Management System using IT Technology 采用IT技术的先进道路管理系统

International Journal of Engineering and Industries Pub Date : 2011-03-31 DOI: 10.4156/IJEI.VOL2.ISSUE1.10

Sunghan Lim

引用次数: 9

Effect of Changes on Joint Connections of Steel Lattice Towers due to Environmental Loads 环境荷载变化对钢格塔节点连接的影响

International Journal of Engineering and Industries Pub Date : 2011-03-31 DOI: 10.4156/IJEI.VOL2.ISSUE1.4

Engin Gücüyen, R. T. Erdem, Ümit Gökkuş

引用次数: 9

Cross-mobile ELM based Activity Recognition 基于跨移动ELM的活动识别

International Journal of Engineering and Industries Pub Date : 2010-12-31 DOI: 10.4156/IJEI.VOL1.ISSUE1.3

Zhongtang Zhao, Yiqiang Chen, Junfa Liu, Mingjie Liu

{"title":"Cross-mobile ELM based Activity Recognition","authors":"Zhongtang Zhao, Yiqiang Chen, Junfa Liu, Mingjie Liu","doi":"10.4156/IJEI.VOL1.ISSUE1.3","DOIUrl":"https://doi.org/10.4156/IJEI.VOL1.ISSUE1.3","url":null,"abstract":"Activity recognition using mobile phones has great potential in many applications including mobile healthcare. In order to let a person easily know whether he is in strict compliance with the doctor's exercise prescription and adjust his exercise amount accordingly, we can use a mobile phone based activity reporting system to accurately recognize a range of daily activities and report the duration of each activity. A triaxial accelerometer built-in the mobile phone is used for the classification of several activities, such as staying still, walking, running, and going upstairs and downstairs. To build an activity recognition model, we usually employ one or some specific persons and a specific mobile phone to collect the training samples. However, the world doesn't have the same two mobile phones. The model learnt on one mobile phone may perform poor on another one due to the different offset o, sensitivity s and sampling frequency f values. To solve the cross-mobile problem, we propose an algorithm known as TransELMAR(Transfer learning and Extreme Learning Machine based Activity Recognition) that integrates the transfer learning technique and extreme learning machine algorithm for activity recognition model adaptation. Tested on a real-world data set, the results show that our algorithm outperforms several traditional baseline algorithm.","PeriodicalId":223554,"journal":{"name":"International Journal of Engineering and Industries","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114870835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16