Maintenance of power distribution facilities is a significant subject in the power supplies. Fault caused by deterioration in power distribution facilities may damage the entire power distribution system. However, current methods of diagnosing power distribution facilities have been manually diagnosed by the human inspector, resulting in continuous pole accidents. In order to improve the existing diagnostic methods, a thermal image analysis model is proposed in this work. Using a thermal image technique in diagnosis field is emerging in the various engineering field due to its non-contact, safe, and highly reliable energy detection technology. Deep learning object detection algorithms are trained with thermal images of a power distribution facility in order to automatically analyze its irregular energy status, hereby efficiently preventing fault of the system. The detected object is diagnosed through a thermal intensity area analysis. The proposed model in this work resulted 82% of accuracy of detecting an actual distribution system by analyzing more than 16,000 images of its thermal images.

세계적으로 석유의 사용량이 급증하면서 석유 에너지원의 고갈문제가 대두됨에 따라 잉여 에너지 자원으로 분류되었던 석탄의 사용 역시 새로운 에너지원으로 관심 받고 있다. 화석에너지 자원의 고갈을 해결할 수 있는 대체 에너지원 역할을 바이오매스 연료가 대체 할 수 있다고 믿어진다. 여기에 국내 하수슬러지의 해양투기가 금지됨에 따라 육상에서의 하수슬러지의 처리가 핵심문제로 부각되면서 국내 발생 하수슬러지의 에너지화는 반드시 필요한 숙제이다. 본 실험은 2stage 가스화기를 이용하여 하수슬러지, 석탄의 가스화를 수행하였다. 실험의 목표는 각각 또는 혼소 시료를 가지고 가스화 반응시켜 생성되는 producer gas의 성상을 비교하고, 활성탄의 사용 유무에 따른 producer gas 변화를 통해 활성탄의 역할을 연구하는 것에 있다. 유동층 물질로는 모래를 사용하였고 air flow late는 15L/min이다. 혼소 비율은 1:1이고 시료의 공급은 스크류식 피더를 사용하였다. 후단에서 채취한 발생 가스는 GC - TCD, FID를 통해 분석하였다. 활성탄 사용에 따라서 수소의 vol%가 급증하는 것을 확인 할 수 있었고 고분자 탄화수소류의 분해로 tar의 양 역시 감소하는 경향을 보였다.

Ju-Shik Kim. 2002. An Examination of Metonymy as Cognitive Process. Studies in Modern Grammar, 157-172. Metonymy as a cognitive process refers to a general cognitive ability that enables speakers to represent a specific object as a whole or its aspects by focusing upon a salient aspect of the object. The purpose of this study is to examine how this metonymical process is materialized in daily speech activities. As a preliminary step for the discussion, a brief review is made on the nature of metonymy in cognitive grammar. A comparative analysis is also made on the difference between metonymy and metaphor so as to give a better picture of the nature of metonymy. The most fundamental difference is that metaphor occurs in the association of source domain and target domain, whereas metonymy happens in a single domain. Based upon this discussion on the nature of metonymy, an attempt is made to explain polysemy in the framework of metonymy. Polysemy is a linguistic phenomenon in which a specific expression can be interpreted as denoting several related meanings. When approaching polysemy from the perspective of metonymy, it is important to note that metonymy occurs in a single domain. In addition, examples are discussed to demonstrate that mytonymy is at work even in the unconscious inference process of everyday speech. In particular, the problem of prototype effect, the problems of conversational implicature, and the problem of the conflict between the pronoun and antecedent are approached in the cognitive framework of metonymy.