제주도 연안 갈치, Trichiurus lepturus 채낚기 어구의 생력화 : 3. 집어등의 수중조도

오승훈,서익조,김병엽,이창헌,정용진,서두옥,김동근 제주대학교 해양연구소 2001 해양자원연구소연구보고 Vol.25 No.-

投資信託會社의 業務領域擴大 方案

吳賢鐸,李憲相,鄭承佑 全北大學校 1992 論文集 Vol.34 No.-

Enlargement of business field is required for the Investment Trust Companies in serious financial trouble to survive. We can think of two basic directions to take which are specialization in the basic investment trust business and acceptance of universalization including the securities business. Considering the current situation of domestic financial industry, a scheme of having a securities company as the mother company while seperating the investment trust business as its subsidiary would be particularly beneficial.

a-Si:H/a-SiN:H 초격자의 제작 및 특성조사

오성수,양승훈,박봉두 경북대학교 산업기술연구소 1987 産業技術硏究誌 Vol.15 No.-

We fabricated a-Si : H/a-SiN : H superlattices using the RF glow discharge system which was equipped with sliding mask and liquifing system of exhausting gases. Samples were deposited at substrate temperature of 250℃, deposition rate of 0.8 - 1.0 A˚/sec, deposition pressure of 200 mTorr (SiH_4) and 400 mTorr (SiH_4 + NH_3), and Rf power density of 150-200 mW/㎠. Employing a-Si: H layer thickness as a deposition parameter (fixing a-SiN : H layer at 30A˚), we found that the decrease of a-Si : H layer thickness (600→60A˚) was accompanied with the increase of activation energy (0.8→1.0eV). And in particular, persistent photoconductivity was clearly observed in the samples with 60A˚ a-Si :H.

粘土鑛物의 混入이 Mortar의 性狀에 미치는 影響에 關한 實驗的 硏究

朴承範,權吳憲 충남대학교 공업기술개발연구소 1976 工業技術開發硏究所論文集 Vol.3 No.2

This paper discribes an experimental study on the properties of Cement-Bentonite mortar for grouting. Recently, low strength cement mortar mixed with clay minerals has been widely employed in foundation treatment, cutoff wall and curtain, strengthening soft soil layer, etc. The experiments were intended to clarify the properties of the cement mortar with the bentonites which were available in the local market. Of the study, fluidity, tendency of segregation and compressive strength of mortar were analyzed with two kinds of clay minerals, namely, A and B-Type Bentonite.

폐렴구균 균혈증에 의한 감염성 심내막염 1예

백승희,오윤정,최영화,신승수,박광주,황성철,박주헌 대한감염학회 2006 감염과 화학요법 Vol.38 No.4

폐렴구균 균혈증에 합병된 심내막염은 드문 경우로 페니실린이 사용된 1940년대 이후로 전체의 1% 이하로 감소하였고, 주로 알코올 중독자에게 잘 발생한다. 저자들은 부비동염과 폐렴구균에 의한 균혈증으로 내원하여 항생제 치료 중 폐렴 및 대동맥 판막에 세균성 심내막염이 발생하여 대동막 판막 치환술 및 승모판 성형술 시행을경험하였기에 문헌 고찰과 함께 보고하는 바이다. Streptococcus pneumoniae has been a rare cause of endocarditis in the postantibiotic era. The incidence of pneumococcal endocarditis now accounts for less than 3% of all cases and most often occur in patients with risk factors, especially alcoholism. We report the case of a 68-year-old male with acute infective endocarditis due to Streptococcus pneumoniae. We stressed the low frequency of this agent as a cause of endocarditis and the atypical evolution of this case.

이동 애드 혹 네트워크에서의 환경적응형 QoS AODV 라우팅 프로토콜에 관한 연구

裵振勝,宋東勳,吳世德,鄭燦赫,金玄郁,李光培,文泰洙,郭承郁,河載承 明知大學校 産業技術硏究所 2004 産業技術硏究所論文集 Vol.23 No.-

In this paper, we propose a bidirectional mobile Ad Hoc routing protocol based on AODV(ad-hoc on-demand distance vector routing) with QoS(quality of service) support. At presence, wireless mobile communication focuses on how to efficiently support mobility of users more than QoS guarantee. However, in order to satisfy requirement of various applications which have been or will be served, QoS guarantee between end points is a very important issue. The existing AODV routing protocol is implemented to use only BE (Best Effort) service. However, actual wireless mobile environment requires to reduce a waste of communication resources and meet with the real-time change of data paths by setting up routes with QoS support, considering available communication resources at each node in advance. Therefore, in this thesis, we propose an adaptive QoS support method using hello message in order to rapidly meet with the change of available communication resources and to smoothly perform route maintenance. For performance evaluation, we analyzed the average data reception rate. At that time, we used evaluation parameters such as node's mobility-stop time, hello message period, and packet priority, considering the node's mobility and the number of best effort/QoS data flows. As results, we found that with our proposed method the average data reception rate was increased 16.293%, 15.914%, 17.238% for 300 mobility-stop second case and 4.809%, 4.264%, 2.956% for 300 mobility-stop second case.

우라늄 이온의 선택흡착

정종헌,김준수,오원진,유재형,유승곤 한국공업화학회 2002 응용화학 Vol.6 No.1

Uranium-containing aqueous wastes have been treated by electrosorption on a carbon electrode composed of activated carbon fibers(ACFs) in a continuous flow-through cell. Effective uranium (VI) removal is accomplished when a negative potential in the range of -0.3 to -0.9V (vs. Ag/AgCI) is applied to the carbon electrode. For a feed concentration of 350mg/l, the concentration of U(VI) in the cell effluent is reduced to less than lmg/l. Electrosorption capacity over 552 mg_uranium/g_ACF is reached.

Trace-forward만을 사용한 Viterbi Decoder

노승효,오승훈,이찬호 崇實大學校 1999 論文集 Vol.29 No.1

Recently, the Viterbi algorithm is widely used for the decoding of convolutional codes. This paper proposes a Viterbi decoder using a trace-forward processing to reduce the amount of memory storing the survivor path information and to increase the decoding speed. We adopt fully parallel structure for ACS(add-compare-select) units to minimize the delay which determines the Viterbi decoder's throughput. We reuses ACS units to reduce ACS area that occupies the majority of the chip area. The decoder is designed using VHDL and is implemented using a CPLD. It is verified to operate by a measurement using a logic analyzer.

안내염과 대장암이 동반된 재발성 간농양

전승정,김태헌,류민선,오다연,송명은,이신아,류재인,김혜인,문일환,유권 이화여자대학교 의과학연구소 2011 EMJ (Ewha medical journal) Vol.34 No.2

The causes of pyogenic liver abscess has been known as biliary tract disease or intrabadominal infection but the large proportions of the patients has no apparent underlying disorders. Recently colonic mucosal lesions were reported in patients with cryptogenic liver abscess and it has been suggested that colonic mucosal break may play a role in developing liver abscess in otherwise healthy patients. We experienced a patient of severe recurrent liver abscess complicated with endophthalmitis only 3 months after successful treatment of initial cryptogenic liver abscess and a polypoid colon cancer was discovered by chance. It seems prudent to proceed colonoscopic examination in patients with cryptogenic liver abscess especially when it is recurrent.

천연두 백신 접종 후 발생된 급성 심근염 1예

박옥성,김종환,이광욱,윤성훈,강동구,이승욱,조상기 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.2

Acute myocarditis complicating coronary vasospasm after smallpox vaccination is very rare complication that can be generally developed within less than 30 days after vaccination. Clinically and biochemically, this disorder is often mimic and highly suggestive of acute myocardial infarction. We report 21 years old man that had a history of a smallpox vaccination 3 weeks ago and prodromal symptoms(fever, malaise etc) a few days ago. hIe visited to our hospital because of abrupt onset of severe substernal chest pain, dyspnea and diaphoresis. At admission, electrocardiography was ST elevation in lead Ⅰ, aVL, V4, V5, and V6. The CK-MB level was 68 U/L, LDH level was 760 U/L, Troponin-Ⅰ was 24.64 ng/㎖, and Troponin-T was positive. 2D-echocardiograpy was normal left ventricular function, Clinically we presumed this disorder as acute myocardial infarction and we promptly performed the coronary angiography and revealed focal spasm in distal left coronary artery territory without critical stenosis in both coronary arteries. We diagnosed this disorder as coronary vasospam complicating acute myocarditis that is different with acute myocardial infarction, and we prescribed nitroglycerin and nifedipine. After discharge, he is now well without any symptoms and has been following up monthly at our outward department for 6 months.