Jahn의 Turnen이 現代 器械體操에 미친 影響

정삼현,배정하,서승유,김규환,이동갑,하정호 東亞大學校 附設 스포츠科學硏究所 1997 스포츠科學硏究論文集 Vol.15 No.-

Among the school gymnastics facilities, perhaps the most common ones are gymnastics apparatus. That's why a historic study in the event of havy gymnastics is required. The researchers here have examined the origin of gymnastics with apparatus centered on Jahn's "turen" exercise. The results are as follows : 1. Heavy gymnastics originally contained a lot of elements from field and track events. It had aims of obtaining natural physical movement and enhancing work efficiency. 2. An outdoor event turnen was banned and changed into an inddor event. The fact that apparatus gymnastics is nowadays held indoors reveals the decisive influnece of Jahn's turnen exercise. 3. Jahn's balance beam exercise was at first played for the purpose of blancing oneself and merely for fun. It has developed into the present from through wide distribution and elaboration. 4. Jahn first used the term of parallel bars and the present women's event of parallel bars resembles Jahn's. 5. Jahn's horizontal bars have also had a great effect on today's event of horizontal bars.

항진균제 알릴아민류의 합성과 생물학적 평가

정병호,조원제,천승훈,박면지,유진철,천문우 朝鮮大學校 1998 藥學硏究誌 Vol.19 No.2

For the development of antifungal agents. modification of naftifine which exhibits significant antimycotic activity was performed by replacing the naphthalene ring of it to hetero cyclic rings such as morpholine. benzothiazole. piperidine and pyridine derivatives. The synthesized compounds were tested in vitro antifungal activity against five different fungi with naftifine as a comparative antimycotic molecule. From the biological evaluation two compounds. (E)-N-(3-phenyl-2-propenyl)-N-(4-piperidinylmethyl)amine(3d) and (E)-N-(3-phenyl-2-propenyl)-N-(3-pyndylmethyl)amine(3D) showed relatively noticeable activity(MIC=50㎍/㎖). On the other hand. the other compounds had no activity.

응급실에서의 확산강조 자기공명 영상

정성필,이석우,양영모,하영록,김승환,유인술 대한응급의학회 2001 대한응급의학회지 Vol.12 No.3

Background: This study was designed to review the cases of patients who had undergone diffusion-weighted magnetic resonance imaging(DWI) in the emergency department(ED), and to investigate its clinical usefulness and current indications. Methods: We analyzed the cases of 152 consecutive patients who underwent DWI in the ED from Jan to Mar 2001. DWI was obtained with the use of a multislice, single-shot, spin-echo plana imaging technique(GE SignaR). Imaging time was less than one minute. The medical records, the DWI films and the computed topography results were reviewed. We investigated the chief complaint, initial findings of physical examination, final diagnosis, decision-making department, interval from admission to imaging, and DWI findings. Results: DWI showed positive findings of high signal intensity in 84 patients(55.3%). Among the 68 patients who yielded a negative result, false negative occurred with 12 patients(17.6%): 10 lacunar infarctions, a pons infarction, and a brainstem infarction. Eleven patients were determined as having a cerebral hemorrhage, all of whom showed the abnormal finding of a mixed signal in DWI. The sensitivity and the specificity of DWI to rule out stroke were 85.5% and 98%, respectively. Current indications for DWI in our ED are age older than 60, alert mental status, and one of the symptoms or signs among lateralyzing sign, language disturbance, and dizziness/vertigo. Conclusion: DWI was highly specific to rule out stroke, so emergency care professionals should be familiar with this new technology. Further prospective study is required to determine the proper indications and clinical usefulness of DWI in the ED.

노인이 지각한 사회적 지지가 자존감에 미치는 영향

유양경,고성희,김귀분,정승희 성인간호학회 2004 성인간호학회지 Vol.16 No.1

Purpose: This study was done to identify the degree that perceived social support effects the self esteem of the elderly. Method: A structured questionnaire was administered to 203 elderly subjects from April 2003 to June 2003. The data were analyzed with an SPSS program for descriptive statistics, Pearson's correlation coefficients. t-test, ANOVA, and stepwise multiple regression. Result: The level of social support was moderate; family support received the highest score among sources of support. In types of support, appraisal support was the highest score and material was the lowest. The level of self esteem was also moderate. The score of social support showed a slightly high positive correlation with self esteem. In general characteristics, several variables were significantly related to self esteem. The most powerful predictor of self esteem was material support by family and the variance explained was 19.6%. A combination of material support by family, informational support by relatives, perceived economic status, perceived health status, and having a subject to depend on accounted for 39.8% of the variance in self esteem of the elderly. Conclusion: To increase the self esteem of the elderly, it is necessary to consolidate material support by family.

논리 시뮬레이션에서 해싱을 이용한 효율적 이벤트 큐에 관한 연구

유승헌,정연모 慶熙大學校 1995 論文集 Vol.24 No.-

The performance of event-driven logic simulation frequently used for VLSI design verification depends on the data structures for event queues. This paper improves the existing Timing Wheel as a data structure for an event queue. In case of the use of B+ tree, an efficient node degree is also presented based on the experiment results. A new Timing Wheel index structure, which eliminates the insertion and deletion overhead of B+ tree, is proposed and analyzed.

컴퓨터를 이용한 冷·暖房 負荷의 簡易 計算法에 관한 硏究

정광섭,유승호 서울産業大學校 1996 논문집 Vol.44 No.1

The variables affecting heating and cooling load calculations are numerous, often difficult to define precisely, and always intricately interrelated. Many heat load components vary in magnitude over a wide range during a 24-h period. Since these cyclic changes in load components are often not in phase with each other, they must be analyzed to establish the resultant maximum heating and cooling load for a building or zone. Building designers have traditionlly employed a wide range of methods to ensure that the performance characteristics of a building will be acceptable. Typically, simple(and sometimes not so simple) calculations and rule of thumb are appiled throughout the design process in an attempt to minimize heat loss, maximize the utilization of solar energy, prevent inefficient plant operation, ensure high comfort satisfaction, control problematic air movement and so on. First of all, this paper has outlined the issues surrounding the creation of simulation-based design tools for the assessment of energy systems behaviour and hear load calculation methods. And then, the objectives of the paper is to suggest the simplified heat load calculation method of building by using computer programs.

포도종실 추출물이 Methylcellulose 필름 성질에 미치는 영향

유승모,박준서,정하열,심재용,김병호,박장우 한국산업식품공학회 2003 산업 식품공학 Vol.7 No.4

The film with methylcellulose(MC) and grape seed extract(GSE) were prepared by casting their aqueous solution at 80℃ and drying at 23℃ for 48 hrs. Effect of grape seed extract(GSE) on the barrier permeabilities and the thermomechanical property of methylcellulose(MC) film was studied. The barrier permeabilities and the thermomechanical property of MC film containing various contents of GSE were evaluated in terms of water vapor, oxygen permeabilities, and dynamic mechanical analysis(DMA). The rate of water vapor permeability of MC film decreased with GSE contnets in the MC films. Also, the rate of oxygen permeability also decreased with GSE contents indicating higher oxygen barrier property of MC film. The results showed that GSE had a good miscibility with MC and acted as a plasticizer for MC film resuling in lowering the glass transition temperature of the film.

XML 문서의 효율적인 구조 검색을 위한 동적 색인 모델

신승호,손충범,유재수 충북대학교 컴퓨터정보통신 연구소 2001 컴퓨터정보통신연구 Vol.9 No.2

XML문서는 정보 표현의 기본 단위인 엘리먼트로 구성되어져 있다. 이러한 정보 표현의 기본 단위인 엘리먼트가 XML문서 내에서 구조 변정 이 발생 할 경우 보다 빠른 검색을 위해 기존의 색인 구조 정보의 변경 없이 효율적으로 처리 되어져야 한다. 이를 위해 본 논문에서는 XML 문서의 구조 변정 시 기존의 색인 구조에 효을적으로 수용될 수 있는 동적 색인 모뗄을 제안한다. 본 논문에서 제안 하는 동적 색인 모뗄을 위한 구조정보는 기존의 EID(Element Id), ETID(Element TrPe Id), SORD(Sibling ORDer) SSORD(Same Sibling ORDer), Ccount 구조정보 추출 방법에 SSORD를 대신한 STSOL(Same TyPe Sibling ORDer List). Scount (STSOL내의 SORD 개수). 그리고 COL(Child ORDer List)을 추가함으로써 구성된다. 이러한 구조정보를 이용해 효율적인 검색을 지원하기 위한 동적 색인 구성 알고리즘을 기술하고 제한하는 색인 기법이 기존의 동적 색인을 지원하는 기법 보다 내용 색인, 구조 색인, 애트리뷰트 색인 측면에서 우수함을 성능 평가를 통해 보인다. XML documents consist of elements that are basic units of information. When the structure of XML documents is changed dynamically, we need to update structure information efficiently without changing the information of an index structure for fast retrieval In this Paper, we propose a dynamic index modelling scheme that update index struoture in real time as the structure of XML documents is changed by insertion and deletion of elements. In recent, for indexing XML documents. we have proposed a structural information representation method such as element ID(EID), element type ID(ETID), sibling order(SORD). same sibling order(SSORD) and child count(Ccount). Besides them, our proposed dynamic index modelling method in this paper extracts additional structural information, such as same type sibling order list(STSOL) that substitutes for SSORD. Scount that is the number of SORDS in STSOL. and child order Bist(COL). We design a dynamic indexing technique with our structural information. We show through various experiments that our method outperforms existing enes in processing various types of queries such as content based queries, structural queries and hybrid queries.

Cellulose 생합성 세균의 분리 및 특성

이승진,유주순,정수열,최용락 東亞大學校附設遺傳工學硏究所 1998 遺傳工學硏究 Vol.- No.5

발효시켜서 만드는 감식초에서 시료를 채취하여 배양하고, pellicle을 형성하는 single colony를 cellulose생합성균으로 분리하였다. 분리된 균주는 형태적 특성, 알콜의 재산화 등의 생리, 생화학적 특성 등에 의하여 Acetobacter속으로 분류되었으며, Acetobacter CBI-2라고 명명하였다. Acetobacter CBI-2는 정지배양 시에 기존의 생합성 균주로 알려진 Acetobacter xylinum과 대등한 cellulose생합성 능력을 나타내었다. Acetobacter CBI-2이 생성한 고분자물질의 분해산물을 TLC법으로 확인한 결과 기존 cellulose의 것과 일치하였다. Acetobacter CBI-2에서 genomic DNA를 분리 정제하여 cel A 영역을 probe로 하여 hybridization시킨 결과, 상동성을 나타내어 분리 균주에는 cellulose 생합성 관련 유전자가 존재함을 나타내었다.(1997년 1월 7일 접수, 1997년 2월 24일 수리). A screening was performed to isolate the cellulose-producing microorganisms from vinegar in Korea. The isolated strain was identified as Acetobacter sp. with respect to physiological and biochemical characteristics and designated as Acetobacter CBI-2. Cellulose production of Acetobacter CBI-2 was equal with the well known cellulose-producing bacteria, A.xylinum. The result of separation on thin layer chromatography (TLC) was consistent with the degradation product of native cellulose. The presence of genes required for the cellulose biosynthesis in Acetobacter CBI-2 was confirmed by Southern hybrization.

條件附 價値測定法을 利用한 우표늪의 保存價値 推定

郭承俊,柳昇動,李忠起 한국국제경제학회 2002 국제경제연구 Vol.8 No.3

최근 들어 습지가 제공하는 수질개선, 홍수조절, 야생동물의 서식처 및 레크리에이션과 같은 다양한 서비스에 대한 인식의 확대로 인해 습지의 가치에 대한 관심이 증가하고 있다. 그럼에도 불구하고 우리나라의 많은 습지들이 개발과 오염으로 인해 사라져가고 있는 것이 현실이다. 이에 본 논문은 내륙습지의 보존 및 관리 정책에 유용하게 활용될 수 있는 정보를 제공하고자 조건부 가치측정법(CVM, contingent valuation method)을 적용하여 람사습지로 등록된 우포늪의 보존가치를 평가하고자 한다. CVM적용의 전 과정은 문헌에서 제시된 여러 가지 지침을 반영하면서 진행되었다. 6대 광역시 기구들을 대상으로 한 연구 결과, 응답자들은 CVM으로 구성된 조건부 시장을 전반적으로 잘 받아들였으며, 우포늪의 보존을 위하여 유의한 금액을 지불하고자 하였다. 측정된 우포늪의 보존가치는 연간 약 194.6억원에 달하는 것으로 분석되었다. 최근 정부는 일련의 개발정책들과 관련한 의사결정에서 자연자산의 보존가치와 같은 환경질을 고려하려는 시도가 증가하고 있음에 비추어 볼때, 본 논문의 결과가 향후 우포늪의 개발과 보존을 둘러싼 논쟁에서 하나의 유용한 배경자료로 활용될 수 있을 것으로 기대된다. The value of wetlands has recently increased because of their various services such as water quality improvement, flood control, wildlife habitat, and recreation. However, most of the wetlands in Korea were lost on account of indiscreet development and pollution. The prime objective of the study is to assess the conservation value of the Woopo Wet-land, Ramsar site, in Korea and thereby provide decision-makers with information in determining conservation and management policy. A contingent valuation (CV) method was performed to estimate the benefits that would ensue from a proposed ecological park program (EPP). The survey was designed rigorously to comply with the National Oceanic and Atmospheric Administration panel guidelines for best-practiced CV studies. The total amount that six metropolitan residents would be willing to pay to execute the EPP is calculated 19.46 billion Korean won, based on the mean willing ness to pay, with a 95% confidence interval from 13.97 billion to 23.84 billion Korean won per year. The results suggest that the public overall perceive conservation quality of natural resources and their value can be quantified in monetary terms. These findings have important implications on efforts to consider environmental quality in Korean wetland policy.