이동 환경에서 멀티캐스트 적용 방안

홍형섭(Hyung-Seop Hong),하정락(Jeoung-Lak Ha),현은희(Eun-Hee Hyun),김상하(Sang-Ha Kim) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.2Ⅲ

Mobile IP(MIP)[1] Working Group에서 제안하고 있는 멀티캐스트 적용 방안에는 크게 HA기반 라우팅과 FA기반 라우팅으로 구분된다. HA기반 라우팅 방법은 멀티캐스트 패킷을 HA에서 터널링하는 방법을 사용하므로 경로의 최적화가 이루어지지 않게 되며 터널 집중화 현상이 발생하게 된다. FA기반 라우팅 방법은 이동 호스트의 핸드오프가 일어날 때마다 멀티캐스트 트리의 재구성이 필요하므로 많은 오버헤드가 발생하지만 경로 최적화는 얻을 수 있다. 본 논문은 HA기반 라우팅과 FA기반 라우팅 방안을 절충한 새로운 멀티캐스트 제공 방안을 제안한다. MH의 이동이 빈번한 마이크로 레벨에서는 HA기반 라우팅을 이용하고, MH의 이동 거리가 큰 매크로 레벨에서는 경로 최적화를 위하여 새로운 멀티캐스트 트리를 재구성함으로써 보다 효율적 멀티캐스트 서비스가 가능한 메커니즘의 프로토타입을 제안한다.

舞踊專攻 女子大學生들의 身體構成과 體型에 關한 硏究

河禎愛,張賀淑 新羅大學校 1991 論文集 Vol.31 No.1

The objective of this study consists in making a comparison between the Body Composition and Somatotype of those woman undergraduates who are majoring in ballet, modern dance or Korean dnace, and then contributing to dancers, choreographers, dance masters, and to those who aremaking researches in dance by providing them with data of findings from this study. For that purpose were randomly sampled out 154 women college students in Pusan, including 55 majoring in korean dance, 51 majoring in modern dance, and 48 majoring in ballet. The resultant findings are as follows; 1) The ratio of body fat they have shows 21.65% in the Korean dance group, 20.36% in the modern dance group, and 20,87% in the ballet. 2) Somatotype in all of the three groups disclose a high value in internal blastoderm factors and a low value in external blastoderm factors. 3) The Korean dence-majoring group shows the lowest value in the development of middle blastoderm factors. 4)The ratio of body fat and internal blastoderm factors in all of the three gorups reveal a high correlation by 0.901, 0.856, 0.841, respectively. 5) The ratio of boby fat indicates an obvious correlation with minus values in external blastoderm factors in all of the three groups, by -0.664, -0.582, and -0.463, respectively.

敦煌壁畵에 표현된 裳,裙에 關한 硏究(三) : 五代ㆍ宋ㆍ元代(907~1368年)를 中心으로

정하신 건국대학교 조형연구소 2000 조형연구 Vol.8 No.-

The highest ceiling cave of the 'Donhwang' cave, the world's biggest in scale and the most well- preserved in condition, is a treasure of buddhistic art. It reflects the period's cultural tendency and is basically the world's oldest cultural museum. The human beings and costumes with coronet-wears as pictured in the 'Donhwang' murals are about a thousand years old from ancient China's 'Five Emirates and Sixteen countries' up to the 'Won' dynasty, reflecting the culture and its costumes of the period costume, divided by the ranks and ethnic origin in conformation with the scriptures written on the existing data. In the period of 'Su' and 'Dang', a great variety of skirts had beautiful colors and splendid appearances worn to cover the body up to the breast, together with a transparent upper under-garments over the draped silk. In the period following the 'Five Emirates', the overall superior culture had merged into a traditional 'Han' culture. Immigration from the west took place but peace continued to reside between these peoples. At the time the 'Emirate' royal families could be married with regional administrators. In the arena of clothing culture, it suggested much generosity in contrast to the 'Dang' dynasty. The former method of jacket closing returned, from rounded necks into cross closing of 'Han' period styles. The traditional Chinese beauties of amply- measured clothing and wider sleeves were still existing as a trend and the foreign trend sectors are partly so. Ladies' clothing of latter period are 'Yu'(jackets), 'sam'(robes), 'Goon'(skirts) and 'Pee'(layered dress), with which the species and compositions are generally similar to the mid-periods, but the overall silhouttes developed into bulky shapes without exposing body figures from the clung neat styles. The wearing methods of 'Goon' had changed as the waist line went up above the breast and was draped as an overall covering the body lines into plentiful shapes. Propagation and development of buddhistic art through 'Donhwang' mural relics had much effect on a variety of clothing styles of Chinese people.

천마의 GABA-benzodiazepine 수용체 복합체에 대한 조절작용

하정희,이동웅,어경윤,하정상,김현주,용철순,허근 영남대학교 약품개발연구소 1998 영남대학교 약품개발연구소 연구업적집 Vol.8 No.-

Methanol extract of G. elata inhibited the binding of [³H]Ro15-1788, a selective benzodiazepine receptor antagonist, to benzodiazepine receptor of rat cortices. Saturation experiments followed by Scatchard analysis of the results showed that the inhibition of [³H]Ro15-1788 binding by G. elata. appeared to be competitive. These competitive inhibiton of the butanol fraction was observed to be higher than the methanol extract. Methanol extract of G. elata inhibited a [³H]flunitrazepam, a selective benzodiazepine receptor agonist, binding to benzodiazepine receptor. GABA significantly enhanced the inhibition of [³H]flunitrazepam binding by G. elata, and these "positive GABA shift" supported the strong possibility of agonistic activity to benzodiazepine receptor. Butanol fraction was observed to be higher than crude extract by methanol in an agonistic activity to benzodiazepine receptor, furthermore enhanced the binding of [³H]SR95531 to GABA_(A) receptor. Butanol fraction of G. elata significantly diminished the pentylenetetrazole-induced lethality of mice. From these results, it can be concluded that substance or substances with neurochemical properties characteristic of a benzodiazepine receptor agonist may be important components, and contribute to the anticonvulsant property of G. elata.

지양호의 오염원 및 수질 조사

하호성,서정윤,진종석,이근석 경상대학교 환경보전연구소 1994 環境保全硏究所報 Vol.2 No.1

The upper area of the Chinyang Lake was devided into four segments, the Gyeongho River, the Yangcheon River, the Deokcheon River and the vicinity of the Chinyang Lake. The water pollution sources and the water quality of four segments were investigated and evaluated. This region was composed of a Dong in a city and 141 Ries in 6 Guns except for Yurunggun and Namwongun. Population density is low in all area except for Hamyang Up and Sancheong Up. Population is 84.903(58%) in the vicinity of the Gyeongho River, 26,093(18%) in the Yangcheon River, 23,039(16%) in the Deokcheon River and 11,468(8%) in the Chinyang Lake. Total occurance of BOD in the upper area of the Chinyang Lake was 45,493 ㎏/day, whose 66% was generated from domestic animals, 17% from the land and 26% from human wastes, respectively. The occurance of BOD in the views of segments analysis showed that 57.1% originated from the vicinity of the Gyeongho River, 28.4% from that of the Yangcheon River, 9.8% from that of the Deokcheon River and 4.8% from that of the Chinyang Lake. The most amount of BOD was discharged to the Gyeongho River, the second to the Deokcheon River and the least to the Chinyang Lake. Total occurance of SS in the upper area of the Chinyang Lake was 137,445 ㎏/day. The most amount of SS was discharged to the Gyeongho River, the second to the Yangcheon River, and the least to the Chinyang Lake. The waste of domestic animal produced the 66% of BOD and the 92% of SS in their total occurance and the 31% of BOD and the 76% of SS in their total discharge. It is concluded that the waste of domestic animal is the important pollution sources, which greatly impact the water quality of the Chinyang Lake. Total nitrogen and phosphorous content in the water of the upstream of the Chinyang Lake were very high. The water quality of the Yangcheon and the Deokcheon River was classified as 4 grade by high pH and numbers of coliform group especially. The high nitrogen content in the upstream of the Gyeongho and the Yangcheon River implies that much nitrogen is originated from the farm land. It is found that the Chinyang Lake is in the process of the eutrophication.

제조업 근로자의 수면실태에 관한 조사

노정균,류기하,이영수,조영채 大韓産業醫學會 1994 대한직업환경의학회지 Vol.6 No.2

산업체 근로자의 수면실태를 조사하고자 1993년 3월에 한 고무제품 제조업 근로자 479명을 대상으로 수면양상에 대한 설문조사를 실시한 결과는 다음과 같다. 1. 전체 조사대상자의 수면장애 유병율은 32.8%였으며, 수면장애의 유형별로는 취면곤란 11.9%, 수면유지곤란6.1%, 조조각성이 6.9%였다. 2. 연령군별 수면유지곤란은 20대가 가장 낮았고 30대가 가장 높았으며, 취침전 진정제 또는 알코올을 이용한 군의 수면장애가 비사용군에 비해 현저히 높게 나타났다. 3. 직업이나 가정에 대해 만족하는 군일수록 수면장애가 불만족군에 비해 낮았으며, 낮잠을 자는 군, 신체적 통증이 없는 군일수록 적게 나타났다. 4. 수면장애에 대한 회귀분석결과 통계적 유의성을 보인 변수는 낮잠여부, 신체적 통증여부 및 근무기간이었다. This study was conducted to investigate sleep qualitys of manufacturing workers. The data were collected from the 479 manufacturing factory workers who were most 3 shift workers. The results obtained were as follows. The prevalence rate of sleep disorder was 32.8%, rate of difficulty in intiating sleep was 11.9%, that of difficulty in maintaining sleep was 6.1%, and that of early morning awakening was 6.9%. Disorders of difficulty in maintaining sleep was low in the age group of twenties and high in thirties. The group of sedative or alcohol use before sleep induction showed high prevalence rate of sleep disorder. The group of satisfying for job or family had the lower rate of sleep disorder than the unsatisfying group. The rate of sleep disorder were low in the group of day sleeping, no physical pain. The variables such as day sleep, physical pain and job tenure showed statistical significance in the logistic regression of sleep disorder.

아동이 지각한 중요한 타인의 기대, 아동의 공격성 및 심리적 안녕감과의 관계

안정하,조옥귀 慶南大學校 人文科學硏究所 2002 人文論叢 Vol.15 No.-

페라이트 도금방법에 의한 자성박막의 제작과 그 자기적 성질

이정식,하태욱 慶星大學校 1996 論文集 Vol.17 No.4

The magnetic thin films can be prepared without vacuum process and under the low temperature(<100℃) by ferrite plating. We have performed ferrite plating of Fe₃??Mn?O₄(x=0.0~0.023) films on glass plate at 80℃. We got the film 9000 A in thickness, having a mirror-like luster. The composition parameter, x, in the Fe₃??Mn?O₄films is much smaller then the corresponding on, x', in the reaction solution(x/x'=0.04), The saturation magnetization(M?) of Fe₃O₄ferrite film as measured by a VSM was M?=480 emu/cc which agrees with Fe₃O₄bulk samples.

Cotton xanthate-Mg(Ⅱ)-homosulfamin complex의 생성 및 성상

김영미,하능진,정연진,이정수 釜山大學校 新藥開發硏究所 1999 藥學硏究誌 Vol.33 No.1

Formation of Cotton xanthate-Mg(Ⅱ)-Homosulfamine complex was investigated varying reaction conditions. Release of homosulfamin from cotton xanthate-Mg(Ⅱ)-homosulfamin complex was studied by batch- and flow-method. Antimicrobial activities were tested against Staphylococcus aureus ATCC 12228, Bacillus subtillis TG-1 Pseudomonas aeruginosa ATCC 9027 and Escherichia coli (NA-1) by employing ditch plate method and compared to that of free Hs.

쌍방향 Compunication Local Network 구축과 활용

최계호,김용현,이형민,김정숙,황용하 대구산업정보대학 2001 논문집 Vol.15 No.-

Since we are in the transitory era from the age of industrialization to the age of information, it is necessary to accomplish an effective localization of the information. Accordingly, the college tries to construct the bi-directional Communication Local Network so that we can provide the local design companies with technical information and that we can achieve the characterization of the college and its differentiation from the local colleges, which will help us produce the better professionals and eventually provide us the foothold that will make the college a heralding force of the national development and the localization of the information. With the CLN research center, the college can play a key role in providing the necessary information and technologies for the design-related companies in Kyeongsangbuk Province and become a corner stone for the localization of the information and the information-oriented nation.