2013 8th International Conference on Electrical and Electronics Engineering (ELECO)最新文献_第3页

Energy conversion efficiency of single-phase transformerless PV inverters 单相无变压器光伏逆变器的能量转换效率

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2013-11-01 DOI: 10.1109/ELECO.2013.6713802

Ziya Ozkan, A. Hava

引用次数: 5

Design and simulation of SiOxNy thin films based planar optical waveguide for integrated optics 集成光学用SiOxNy薄膜平面光波导的设计与仿真

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2013-11-01 DOI: 10.1109/ELECO.2013.6713884

M. Boulesbaa, R. Mahamdi, Lynda Saci

引用次数: 0

Read/write mode operating distance optimization for 13.56MHz contactless IC cards 13.56MHz非接触式IC卡读写模式工作距离优化

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2013-11-01 DOI: 10.1109/ELECO.2013.6713875

Sadik Arslan

引用次数: 0

Extracting Turkish tweet topics using LDA 使用LDA提取土耳其文推文主题

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2013-11-01 DOI: 10.1109/ELECO.2013.6713899

Fahriye Gemci, K. A. Peker

{"title":"Extracting Turkish tweet topics using LDA","authors":"Fahriye Gemci, K. A. Peker","doi":"10.1109/ELECO.2013.6713899","DOIUrl":"https://doi.org/10.1109/ELECO.2013.6713899","url":null,"abstract":"Social media is a very popular medium of communication for sharing people's activities, opinions and feelings with others. Twitter has become one of the most popular of these social media services. Finding relevant information in the large space of Twitter is a challenge. Various algorithms have been developed to find related tweets. Extracting tweet topics is one of the techniques that can be used for this purpose. Recently, LDA (Latent Dirichlet Allocation) has been successfully used in analysis of tweet topics in English. However, LDA hasn't been tried on Turkish tweets. Turkish is an agglutinative language, which makes application of LDA a new challenge compared to LDA on English tweets. A series of preprocessing steps like stemming, stop word elimination, cleaning of punctuations and spelling errors etc. to make the tweet texts suitable for LDA analysis are used in our application. 6 6.000 tweets and 4.000 control tweets with Twitter4j library are crawled [2]. Zemberek library is used for stemming [3]. The language used in tweets - with its own rules, wide spread spelling errors or made-up words - make text analysis very difficult. Some of these problems are solved by adding new words into Zemberek library and some of the problematic words are completely removed. After preprocessing, LDA i s performed and 40 topics are extracted. The initial results look promising. Some significant topics such as football teams, celebrity names or hot news topics are detected. Using these results, automatic recommendation of relevant tweets will be performed.","PeriodicalId":108357,"journal":{"name":"2013 8th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134146619","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: 3

A new approach for real-time tool dedicated to the detection of broken bar fault in induction motor 一种用于感应电机断条故障实时检测的新方法

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2013-11-01 DOI: 10.1109/ELECO.2013.6713837

M. A. Moussa, Y. Maouche, M. Oumaamar, A. Khezzar

引用次数: 2

Maximum load behaviour of a fuel cell stack under different ambient temperatures 不同环境温度下燃料电池堆的最大负载特性

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2013-11-01 DOI: 10.1109/ELECO.2013.6713808

Y. Ozcelep, Koray Gurkan, A. Kuntman

引用次数: 2

A positive and negative sequences detecting method based on an improved PQ theory for power grid synchronization 基于改进PQ理论的电网同步正负序列检测方法

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2013-11-01 DOI: 10.1109/ELECO.2013.6713828

A. Boussaid, Y. Maouche, A. Nemmour, A. Khezzar

{"title":"A positive and negative sequences detecting method based on an improved PQ theory for power grid synchronization","authors":"A. Boussaid, Y. Maouche, A. Nemmour, A. Khezzar","doi":"10.1109/ELECO.2013.6713828","DOIUrl":"https://doi.org/10.1109/ELECO.2013.6713828","url":null,"abstract":"This paper proposes a modified PQ theory for detecting the positive and negative components of the utility voltages under faulty grid conditions. Fast and exact detecting of those sequences is important to achieve the operating at unity power factor integration of distributed generations into the main grid and for other uses. A detailed description of the proposed method has been accomplished. A phase lockedloop on synchronous rotating frame (SRF PLL) is commonly used to detect the exact phase angle; nevertheless this solution failed immediately to extract the two sequences under unbalanced and distorted conditions. The FMV filter constitutes a very interesting alternative to obtain the phase angle precisely and instantaneously; in this way, different kind of filters with a narrow bandwidth have been used for the separation of positive and negative components; however the response time is extended and an important phase delay is generated. the calculation of the mean value of the instantaneous power is a way to eliminate the AC component with a time response less than one of half of period. The obtained simulation results have been confirmed experimentally using a Dspace 1104 platform.","PeriodicalId":108357,"journal":{"name":"2013 8th International Conference on Electrical and Electronics Engineering (ELECO)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117173044","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

Economic dispatch by the combination of HNN and the Lagrange method 结合HNN和拉格朗日方法的经济调度

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2013-11-01 DOI: 10.1109/ELECO.2013.6713905

Riad Bouakacha, Leulmi Salah

引用次数: 1

Voltage signatures between two sub-windings in dual three-phase induction motor under static air-gap eccentricity 静态气隙偏心作用下双三相异步电动机两副绕组电压特征

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2013-11-01 DOI: 10.1109/ELECO.2013.6713843

Y. Maouche, M. Oumaamar, A. Nemmour, A. Khezzar

引用次数: 3

MOS-only allpass filters modified for low operating frequency range MOS-only全通滤波器修改为低工作频率范围

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2013-11-01 DOI: 10.1109/ELECO.2013.6713931

H. A. Yildiz, A. Toker, A. Elwakil, S. Ozoguz

引用次数: 1