퍼지시스템과 진화알고리즘 기반 지역부하예측 시스템개발

張右晳,指眩旻,姜渙一 명지대학교 산업기술연구소 2006 産業技術硏究所論文集 Vol.25 No.-

This paper proposes a time series prediction method for the nonlinear system using the fuzzy system and the evolutionay strategy and the genetic algorithm. At first, we obtain the optimal fuzzy membership function using the evolutionary strategy or genetic algorithm. With the optimal fuzzy rules and its input differences, a better time prediction series system may be obtained. We obtain a good result for the time prediction of the regional electric load. In addition we implement the graphic user interface for the proposed algorithms.

위의 유암종과 선종의 병발 1례

장재식,강혁주,이중현,서영범,윤병구,김용섭,이구,서정일,양창헌,이창우,김정란,윤환중 東國大學校醫學硏究所 2000 東國醫學 Vol.7 No.-

유암종은 전신에 퍼져 잇는 장크롬친화성 세포에서 기원하는데 위의 유암종은 비교적 드문 질환으로 모든 유암종의 1.9~2.2%에 해당하며 위에 발생하는 종양의 1% 미만에서 보고되고 있다. 유암종은 일반적으로 증상이 비특이적이고 면역조직화학검사에 의해서 진단되기 때문에 과거에는 드물게 발견되었으나 최근 내시경 기기 및 술기의 발전과 검사 빈도의 증가 및 면역조직화학검사의 발달로 진단율이 증가 추세에 있으며, 드물지만 유암종에서 선암과 공존하는 예들이 보고되고 있다. 저자들은 심와부 동통을 주소로 내원한 70세 남자 환자의 상부위장관내시경 검사에서 위체상부의 대만곡에서 0.4×0.4 cm 크기의 중간 함몰을 가진 Yamada 1형의 용종과 함께 전정부의 전벽에서 0.8×0.5 cm 크기의 융기된 점막 소견을 보여 조직학적으로 각각 위유암종 및 위선종임을 확진한 후 내시경적 용종 절제술로 치료한 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Carcinoid tumors are arisen from enterochromaffin cells, which are scattered throughout the body. These tumors are composed of variable numbers of cells that contain endocrine granules in their cytoplasm, which can be identified by immunohistochemistry and electron microscopy. Gastric carcinoid tumors are relatively rare tumor, the reported incidence being 1.9~2.2% of all carcinoid tumors and less than 1% of all gastric tumors. Sometimes, composite carcinoid tumors and adenocarcinoma is reported. We experienced a case of the coincidence of carcinoid tumor and adenoma at the other site of the stomach in a 70 year old male patient. Gastrofiberscope showed 0.4×0.4 cm sized Yamada type I polyp with central depression on the greater curvature of the proximal body and 0.8×0.5 cm sized focal slightly elevated mucosa on the anterior wall of the antrum. The endoscopic biopsy specimens revealed carcinoid tumor and tubular adenoma with moderate atypism, respectively. The carcinoid tumor and adenoma were removed by endoscopic polypectomy. According to the follow-up gastrofiberoscopy after 7 month later, both lesions were nearly normal mucosa except whitish atrophic change after polypectomy.

Synthesis of 1,1′-Bis(1-Hydro-2,3,4,5-Tetraphenyl-1-Silacyclopentadienyl) [Ph4C4Si(H)-(H)SiC4Ph4] from Silole Dianion {[SiC4Ph4]2 2[Na+]}; Oxidative Coupling of Silole Dianion {[SiC4Ph4]2 2[Na+]} via Silolyl Anion Radical [HSiC4Ph4] [Na+] by Anhydrous H

홍장환 배재대학교 자연과학연구소 2019 自然科學論文集 Vol.30 No.1

Reaction of silole dianion {[SiC4Ph4]2[Na+] (1) with anhydrous hydrogen chloride (HCl) gas in THF at -78°C provides 1,1′‐bisbis(1‐hydro‐2,3,4,5‐tetraphenyl-1‐silacyclopentadienyl) [Ph4C4Si(H)‐(H)SiC4Ph4] (2). It is suggested that a reaction of the silole dianion (1) with hydrogen chloride immediately gives 1‐hydro‐silole anion {[H‐SiC4Ph4]‐•[Na+]} (3), oxidation of which by an additional hydrogen chloride provides the dihydrobissilole (2) via 1‐hydro‐silole radical {[H‐SiC4Ph4]•} (4).

환경보고서의 유용성에 대한 이용자의 인식에 관한 설문조사연구

장지인,김장환,정혜정 대한경영학회 2003 大韓經營學會誌 Vol.16 No.7

This study will develop the way of working out the more useful environmental report based on the result of the survey which was carried out in the companies currently publishing the report(publisher) and stakeholder(report user). At present, the number of domestic company which publishers the environmental report is quite few, however, its number will be expected to reach high in near future in the light of its importance. In the survey of usefulness of those environmental reports, 24 out of 25 report publishers and 18 out of 22 report users answered "useful". However, both of publishers and users pointed out the various points at issue of their points of views when they wrote and used the reports. First of all, the publishers usually make out the environmental reports based on the guideline out of the Ministry of Environment which is official recognized standard to help the publishers the consistency of the report and easiness of making out. However, the publishers also indicate controversial points of impeding the publisher's creativity due to its too much generalization. The users of those environmental reports present the problems of the impossibility of making comparison between entities due to the difficulties of the substance of the report, credibility of its objectivity and confidence, and lack of unified formation of report. The result of this survey is expected to be good reference for the development of the environmental report.

진화알고리즘과 퍼지시스템을 이용한 단기부하예측 시스템개발에 관한 연구

張右晳,李性穆,姜渙一 명지대학교 산업기술연구소 2006 産業技術硏究所論文集 Vol.25 No.-

This paper proposes a time series prediction method for the nonllinear system using the fuzzy system and the evolutionay strategy and the genetic algorithm. At first, we obtain the optimal fuzzy membership function using the evolutionary strategy or genetic algorithm. With the optimal fuzzy rules and its input differences, a better time prediction series system may be obtained. We obtain a good result for the time prediction of the short term electric load. In addition we implement the graphic user interface for the proposed algorithms.

일본 자민당 장기 일당우위체제의 요인 : 선거제도를 중심으로

성장환,김동국 대구교육대학교 1994 論文集 Vol.29 No.-

翼端 부근의 人工的 面粗度가 揚力에 미치는 影響에 關한 硏究

李璋煥,河在賢 영남대학교 공업기술연구소 1984 연구보고 Vol.12 No.1

In this study we attempted to increase the wing lift by roughen the tip a rear of the wing surface. Two types of the wing shape (one is square and the other is swept) and two types of artificial roughness were used in the wind tunnel experiment. The cross sectional shapes of the wing models were that of NACA 0010 basic thickness form. The lift coefficients of wing models were measured and compared, and proved to gain good results. Maximum lift coefficient of the wing model which has artificial rougness was bigger than that of the smooth surface wing about 32.4%, and the stall angle was also delayed about 6.7˚. The reason of these phenomena was verified by oil-film visualization photographs of wing surface flow shapes. The separation lines of artificial roughness wing models moved back compared with the smooth surface wing, and the sizes of the stall area was also reduced. And it was verified that the adverse flow oriented direction of the arificial roughness is more profitable than random one in the case of line roughness.

국회의원선거에 있어서 고명선거 실현을 위한 정당의 역할

성장환 大邱敎育大學校 2000 論文集 Vol.35 No.-

새열기형의 임상적 고찰

김장묵,김대식,백승혁,한동렬,김희중,백병준,오천환 순천향의학연구소 2000 Journal of Soonchunhyang Medical Science Vol.6 No.2

Background and Objectives : Branchial cleft anomalies are encountered rarely in clinical practice. We reviewed medical records of branchial cleft anomalies according to age and sex distribution, site distribution, characteristics of mass on physical examination, location of mass, preoperative diagnosis, type of branchial cleft cyst and report our experience with 25 cases of branchial cleft anomalies. Materials and Methods : A review of medical records was performed on 25 cases of branchial cleft anomalies diagnosed in pathologic report from January, 1990 to March, 2000. Result : Sex distribution was 11 male and 14 female, age distribution was most common in third decade which was 8 cases(32%). Site distribution was predominant in left side(13 cases), and in physical examination, the characteristics of the mass was nontender(76%), mobile(60%), soft(80%). The lesion site was submandibular area in 2 cases, upper 1/3 portion of sternocleidomastoid muscle(SCM) in 2 cases, middle 1/3 portion of SCM in 20 cases and parotid area in 1 case. The preoperative diagnosis was branchial cleft cyst in 16 cases, cervical lymphadenitis in 3 cases, tuberculous lymphadenitis in 3 cases, branchial cleft fistula in 1 case, dermoid cyst in 1 case and parotid mass in 1 case. Among 25 cases, first branchial cleft cyst was seen in 4 cases, second branchial cleft cyst in 20 cases and second branchial cleft fistula in 1 case. Conclusion : The clinical history of recurrent neck inflammatory episodes in young patients and nontender, mobile, soft neck mass should raise the suspicion of this entity. Investigation using CT scanning in combination with aspiration is useful. Treatment of all branchial cleft anomalies is complete surgical excision because there is lack of spontaneous regression, a high rate of recurrent infection, the possibility of other diagnosis, and rare malignant degeneration. Complete removal without complications depends on a good understanding of regional embryogenesis, a knowledge of the surrounding structure, and awareness of the different anatomical presentation.

윤곽검출용 CMOS 시각칩의 수평억제기능에 대한 해석

김정환,박대식,박종호,김경문,공재성,신장규,이민호 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1