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Abdulkerim Karabiber 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.5
Nontechnical losses or electricity theft has been a serious problem in many developing countries for a long time. Recent studies focus on theft detection methods to determine the actual location of electricity theft. However, even if utility services detect the exact location of electricity theft, they cannot prevent it due to distance and limited number of staff. This study presents an electricity theft detection method to determine and price nontechnical losses. The proposed method includes utility power meters throughout electric distribution lines. Thanks to utility power meters, even if dishonest consumers tamper with or bypass their own power meters, their electricity consumption is accurately recorded. Furthermore, the proposed method detects and prices the electricity theft which is occurred between electric poles. An electricity distribution grid is modeled in a Matlab Simulink simulation environment to test the proposed method. The results reveal that electricity theft events are detected with full accuracy and their charges are billed to consumers who live closest to the region where electricity theft occurs. The aim of the proposed method is to protect honest customers and deter dishonest ones from committing electricity theft.
Murvet Yuksel,Hamza Karabiber,K. Zafer Yuksel,Gonul Parmaksiz 대한영상의학회 2005 Korean Journal of Radiology Vol.6 No.4
We present here the case of a 12-year-old boy who had Klippel-Feil syndrome with renal, cardiac and multiple skeletal anomalies, and we show the relevent three-dimensional computed tomography images. Our patient had a triple renal pelvis, mitral valve prolapsus, multiple cervical vertebrae fusions, cervical ribs, hypoplasia of the right thumb, spina bifida of L5, lumbalization at the right side of S1 and a sacral curved defect. In this study, we discuss the atypical clinical features and the diagnostic value of three-dimensional CT for evaluating the skeletal anomalies of the Klippel-Feil syndrome cases.