International Journal of Digital Content Technology and Its Applications最新文献_第7页

Electromagnetic Interference between Power/ Telecommunication Lines and Railway Systems 电力/电信线路和铁路系统之间的电磁干扰

International Journal of Digital Content Technology and Its Applications Pub Date : 2013-06-30 DOI: 10.4156/JDCTA.VOL7.ISSUE10.17

Eugene Rhee, Changjae Kim

{"title":"Electromagnetic Interference between Power/ Telecommunication Lines and Railway Systems","authors":"Eugene Rhee, Changjae Kim","doi":"10.4156/JDCTA.VOL7.ISSUE10.17","DOIUrl":"https://doi.org/10.4156/JDCTA.VOL7.ISSUE10.17","url":null,"abstract":"Abstract This paper presents the electromagnetic interference effects from the railway systems to electric power supplier systems and telecommunication lines. As the railway system emits the electromagnetic radiation mainly from 30 MHz to 1 GHz frequency bands, the interfering noise can be induced to the nearby power lines or telecommunication lines in the frequency band of same frequency spectrum or higher. This paper modeled and analyzed the radiated electromagnetic emission levels from the railway system to validate the electromagnetic interference from the railway system. As the first step, the electromagnetic coupling between the railway system and overhead power lines crossing the railways were modeled and analyzed. And then, the electromagnetic coupling between the railway system and telecommunication lines in the tunnel were modeled and analyzed. In the analysis result, it was shown that the radiated electromagnetic interference level from the railway system is so considerably low that the induced noise level from the railway systems to the electricity supplier and telecommunication systems would be an insignificant level.","PeriodicalId":13797,"journal":{"name":"International Journal of Digital Content Technology and Its Applications","volume":"304 1","pages":"163-170"},"PeriodicalIF":0.0,"publicationDate":"2013-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81454366","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: 0

High-Resolution Phased Array Ultrasonic Imaging with the Subspace Method 子空间方法的高分辨率相控阵超声成像

International Journal of Digital Content Technology and Its Applications Pub Date : 2013-06-30 DOI: 10.4156/JDCTA.VOL7.ISSUE10.8

Xiaofei Zhang, Han Chen

引用次数: 0

Research on Contact Fatigue of Variable Lead Screw System 变丝杠系统接触疲劳研究

International Journal of Digital Content Technology and Its Applications Pub Date : 2013-06-30 DOI: 10.4156/JDCTA.VOL7.ISSUE10.1

Wei Zhang, Xiang Shi, Dongbo Li

引用次数: 2

New performed model of ISO/IEC 20000 standard 新执行的ISO/IEC 20000标准模型

International Journal of Digital Content Technology and Its Applications Pub Date : 2013-06-30 DOI: 10.4156/JDCTA.VOL7.ISSUE10.9

A. Tanovic, S. Ribic, Zvjezdan Sehovac

引用次数: 2

A simple analytic solution for the perspective-3-point problem 透视3点问题的简单解析解

International Journal of Digital Content Technology and Its Applications Pub Date : 2013-06-30 DOI: 10.4156/JDCTA.VOL7.ISSUE10.13

M. Deyi, C. Yimin, Huan Chen, Yan Yuruo

引用次数: 1

Classification of Ischemic Optic Neuropathy Using Custom Image Processing Algorithm-Statistical Based Analysis 使用自定义图像处理算法的缺血性视神经病变分类-基于统计的分析

International Journal of Digital Content Technology and Its Applications Pub Date : 2013-06-30 DOI: 10.4156/JDCTA.VOL7.ISSUE10.10

B. Al-Naami, Nasr Y. Gharaibeh, T. Hayajneh, B. Mohd, A. Kheshman

{"title":"Classification of Ischemic Optic Neuropathy Using Custom Image Processing Algorithm-Statistical Based Analysis","authors":"B. Al-Naami, Nasr Y. Gharaibeh, T. Hayajneh, B. Mohd, A. Kheshman","doi":"10.4156/JDCTA.VOL7.ISSUE10.10","DOIUrl":"https://doi.org/10.4156/JDCTA.VOL7.ISSUE10.10","url":null,"abstract":"Ischemic optic neuropathy (ION), is one of the most well-known disease which could lead to vision loss or blindness. ION impacts the head of the optic nerve (ONH),referred to as anterior (AION), and the other parts of the optic nerve, referred to as posterior (PION).This article presents a customized image processing method based on low pass filtration and segmentation of the area around the ONH , which is the region of interest (ROI) to detect ION. The extracted RIOs features for the optic nerve were analyzed and employed by statistical analysis's such as descriptive analysis and test of hypothesis. To test the sensitivity of the proposed imaging method to discriminate images of individuals with ION from healthy ones, 76 fluorescein angiography images were analyzed. The images were classified based on participants status such as: healthy, ION over the age of 45, ION under the age of 45. The proposed method demonstrated a 95% accuracy in discriminating healthy images from those with ION, and consequently would help identify the clinical features of ION.","PeriodicalId":13797,"journal":{"name":"International Journal of Digital Content Technology and Its Applications","volume":"6 1","pages":"95-106"},"PeriodicalIF":0.0,"publicationDate":"2013-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81147235","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: 1

Life Prediction of EMU Brake pad Based on Optimized Neural Network And Grey Theory 基于优化神经网络和灰色理论的动车组刹车片寿命预测

International Journal of Digital Content Technology and Its Applications Pub Date : 2013-06-30 DOI: 10.4156/JDCTA.VOL7.ISSUE10.12

Liu Feng, Liangfen Xiao, Ren QinZheng, Zheng Juan

引用次数: 2

Estimation of Payload of Histogram Shift-Based Steganography Using Two-Stage Steganalysis 基于两阶段隐写分析的直方图移位隐写有效载荷估计

International Journal of Digital Content Technology and Its Applications Pub Date : 2013-06-30 DOI: 10.4156/JDCTA.VOL7.ISSUE10.6

Chiang-Lung Liu, Hsing-Han Liu

引用次数: 1

Fast Hybrid String Matching Algorithm 快速混合字符串匹配算法

International Journal of Digital Content Technology and Its Applications Pub Date : 2013-06-30 DOI: 10.4156/JDCTA.VOL7.ISSUE10.7

A. Abdulrazzaq, N. Rashid, Aziz Nasser Boraik Ali

引用次数: 4

Feature Analysis of Electromagnetic Interference Measurement Facilities 电磁干扰测量设备特征分析

International Journal of Digital Content Technology and Its Applications Pub Date : 2013-06-30 DOI: 10.4156/JDCTA.VOL7.ISSUE10.16

Eugene Rhee, Changjae Kim

{"title":"Feature Analysis of Electromagnetic Interference Measurement Facilities","authors":"Eugene Rhee, Changjae Kim","doi":"10.4156/JDCTA.VOL7.ISSUE10.16","DOIUrl":"https://doi.org/10.4156/JDCTA.VOL7.ISSUE10.16","url":null,"abstract":"This paper presents a feature analysis of two electromagnetic interference test facilities. The one is an anechoic chamber and the other is a reverberation chamber. And then, this paper reviews problems of the current reverberation chamber, the stirrer. In general, a reverberation chamber uses a stirrer to generate a uniform electric field inside it. However, the stirrer is a big sized unit and has rotating parts in it, which makes problems and difficulties in maintenance. To conquest these problems, this paper suggests a diffuser which is commonly used in acoustics. To study the substitution effect of a diffuser, a diffuser and a reverberation chamber for 5.0-7.0 GHz band are designed and fabricated. And then, the real measurement of electric field intensity is done to study the electromagnetic interference characteristics in a reverberation chamber with a diffuser. With the measurement results, it is show that a diffuser satisfies the international standard requirement, which means the reverberation chamber with a diffuser can be used as an official facility for the electromagnetic interference measurement.","PeriodicalId":13797,"journal":{"name":"International Journal of Digital Content Technology and Its Applications","volume":"27 1","pages":"155-162"},"PeriodicalIF":0.0,"publicationDate":"2013-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76901737","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: 4