• 대한전자공학회논문지SD
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• 제43권1호
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• pp.45-58
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• 2006

유한체의 H/W 구현에는 정규기저를 사용하는 것이 효과적이며, 특히 타입 I의 최적 정규기저를 갖는 유한체의 H/W 구현이 가장 효율적이다. 이를 이용하기 위하여 타입 (m,k) 인 가우스 주기를 갖는 유한체 중에서 $GF(mk+1)^{\ast}$=<2>를 만족하는 유한체 $GF(2^m)$을 타입 I 최적 정규기저를 갖는 유한체인 $GF(2^{mk})$의 부분체인 것을 이용한 새로운 병렬곱셈 연산기를 제안하였으며, 이러한 곱셈기는 암호학적으로 널리 응용되는 타입 k=2, 4, 6등의 경우에 기존에 알려진 가장 효율적인 Reyhani-Masoleh 과 Hasan의 연산기와 같은 복잡도를 갖는 효과적인 연산기이다.

• Asian Pacific Journal of Cancer Prevention
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• 제16권17호
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• pp.7803-7807
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• 2015

Opisthorchis viverrini infection is a serious public health problem in Southeast Asia especially in the northeast and north of Thailand. Therefore, a cross-sectional survey using multistage sampling was conducted from the rural communities of Surin province, Thailand, during September 2013 to July 2014. O. viverrini infection was determined using Kato's thick smear technique. Socio-demographic, information resources, and history data were collected using predesigned semi-structured questionnaires. A total of 510 participants completed interviews and had stools collected. Some 32 (6.47%) participants were infected with O. viverrini. The rate was slightly higehr in males (6.61%) than females (6.32%). High frequencies were found in the age groups 61-70 (19.4%) and 71-80 years (19.4%), those involved in agriculture (10.5%), and in primary school (10.3%). The distribution of high infection was found in Tha Tum (16.7%) and Sankha district (16.7%), followed by Samrong Thap (13.3%), Si Narong (13.33%), and Buachet district (13.33%). Chi-square testing indicated that age (61-70 and 71-80 year old), education (primary school) and occupation (agriculture), were significantly associated with O. viverrini infection (p-value<0.05). Of 72.6% participants who had past histories with stool examination, 17.0% of them had been infected with O. viverrini and 43.2% treated with praziquantel. This finding confirmed that O. viverrini is still a problem in Surin province, Thailand, and therefore, interventions are urgently required for mass treatment and health education implementation.

• 한국간호교육학회지
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• 제4권1호
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• pp.38-52
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• 1998

The aim of this study is to analyze the meaning of Korean elders' reminiscences by analysing korean novel literature from 1930s to 1990s. The results of this study are as follows : The moaning of elders' reminiscences are the reflecting on their life, conquesting the excessive fondness the regrecting, the pursuiting of the powers, the pursuiting of the love(Jeong) and the conformation of their exsistence. Elders have tried to examine their life through reflection on their life tha? they did not live good life as son and daughter for parents and as parents for children and that they have foolishly lived, on dream that they did not come true, on their learning that they did not unsatisfied. But elders conquest the excessive fondness. They have felt their limitations of power in the conflict of human relation, the economic matter and the difficult predicament, and have finally accepted their life as it is by conquesting from their tenacity. It is dynamically found that both the reflecting on their life and conquesting of the excessive fondness. And they pursuit the powers. It means the pursuit of the vital powers, the vigorous powers and the competency, Elders have pursuited their vitality, vigor and competency through their reminiscences and have wanted to be recognized by others as a powerful being. These have dynamic and compounded aspects. Elders have pursuited the purely love (Jeong) through their reminiscence togather with their sisters and brothers. And the confirmation of their exsistence refer to through their own situation of health, condition, children, neighbourhood and doing their duty as a human. Elders have confirmed the present value of their being through the reflecting the present, past self, other men around themselves, children, neighborhood and the doing their human duty as a good men. Therefore the results of this study can offer new view on the elders' reminiscences that we have to understand them as a process as what they are, escaping from the simple logic that elders' reminiscence have a positive or a negative effects. Also, this study which have examined the natures of Korean elders' reminiscences can cast a new light on elders' nursing proper for Korean culture.

• Computers and Concrete
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• 제21권5호
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• pp.495-504
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• 2018

The possibility of earthquakes in vulnerable regions indicates that efficient technique is required for seismic protection of buildings. During the recent decades, the concept is moving towards the insertion of base isolation on seismic prone buildings. So, investigation of structural behavior is a burning topic for buildings to be isolated in base level by bearing device. This study deals with the incorporation of base isolation system and focuses the changes of structural responses for different types of Lead Rubber Bearing (LRB) isolators. A number of sixteen model buildings have been simulated selecting twelve types of bearing systems as well as conventional fixed-base (FB) scheme. The superstructures of the high-rise buildings are represented by finite element assemblage adopting multi-degree of freedoms. Static and dynamic analyses are carried out for FB and base isolated (BI) buildings. The dynamic analysis in finite element package has been performed by the nonlinear time history analysis (THA) based on the site-specific seismic excitation and compared employing eminent earthquakes. The influence of the model type and the alteration in superstructure behavior of the isolated buildings have been duly assessed. The results of the 3D multistory structures show that the lateral forces, displacement, inertia and story accelerations of the superstructure of the seismic prone buildings are significantly reduced due to bearing insertion. The nonlinear dynamic analysis shows 12 to 40% lessening in base shear when LRB is incorporated leading to substantial allowance of horizontal displacement. It is revealed that the LRB isolators might be potential options to diminish the respective floor accelerations, inertia, displacements and base shear whatever the condition coincides. The isolators with lower force intercept but higher isolation period is found to be better for decreasing base shear, floor acceleration and inertia force leading to reduction of structural and non-structural damage. However, LRB with lower isolator period seems to be more effective in dropping displacement at bearing interface aimed at reducing horizontal shift of building structure.

• 한국생활과학회지
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• 제5권2호
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• pp.17-35
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• 1996

The purpose of this study was to develope Premarial Sexual Education Program. This program was based on survey(466 data used) for the need of PSEP. The result were as followings: 1. The need of sex education was higher(92.9%) and the participation of this PSEP was 80.4%, so this program was systemic structure. 2. Their premarital sexual values were more permissive(52.2%) than the past. But women thought tha female would be vergin(27.1%) their inter course experience rate was 33.4% and Age of experience was under 23 year olds. 3. The unmarried persns wanted that PSEP was consisted of 10 sub themes : (1) pregnancy and child-birth(mean=4.4/5) (2) contraception and family planning(m=4.3) (3) sexual morality and sexual value(m=4.2) (4) sexual healthy family (m=4.1) (5) sexual open communication(m=4.1) (6) venereal disease and coping stratiges(m=4.0) (7) sex role learning(m=3.9) (8) sexual physiology(m=3.8) (9) premarital sex and unwed mother(m=3.7) (10) adultery and society(m=3.6) 4. They want that group meeting would be every Wensday or Friday evening and the required time is two hours. The instruction methods are expected lecture, discussion or seminar and viewing video tapes. 5. So PSEP was consist of 10 sub-themes: (1) orientation and self-disclosure(test, lecture, game) (2) sexual physiology(video tape, lecture) (3) pregnancy and child birth(lecture, video tape) (4) contraceptive methods and family planning(lecture, video tape, test, discussion) (5) sex role learning(test, lecture, role-play) (6) venereal disease and coping stratiges(lecture, video tape) (7) premarital sex and incest(cause study, lecture) (8) sex morality and sex value(seminars, lecture) (9) sexual open communication(seminars) (10) sexual healthy family(lecture, seminars)

• 한국통신학회논문지
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• 제12권4호
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• pp.309-324
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• 1987

오늘날 데이터 감축을 위한 디지털 영상처리에 KLT와 매우 유사한 성능을 갖는 DCT에 관한 관심도가 점점 늘고 있다. 지금까지 계산량을 줄이기 위해 발표된 많은 알고리즘 중에서 Chen의 알고리즘이 가장 많이 알려져 있다. 최근데 발표된 Lee 알고리즘은 Chen의 알고리즘에 비해 복잡한 계산량을 줄였지만 고정 소수점 연산시 FWL에 의한 성능감소가 발생한다. 본 논문에서는 FWL 영향에 따른 오차 분석을 행하여 두 알고리즘들의 성능비교를 하였다. 또한 고정 소수점 연산에 따른 성능감소를 줄이기 위해 up&down-scaling기법을 제안하였다. 16비트 고정 소수점 연산으로 16x16 2차원 DCT를 구현하여 영상 데이타에 적용할 경우 이론적인 고찰과 시뮬레이션 결과 Lee 알고리즘이 Chen 알고리즘과 유사한 성능을 갖는다는 것을 입증하였다.

• 한국통신학회논문지
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• 제13권5호
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• pp.390-399
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• 1988

계산 과장이 비교적 간단하고 실시간 처리가 가능한 coding방법 중의 하나인 BTC(Block Truncation Coding)를 이용하여 영상 데이터를 압축하기 위하여 2진 영상에서 주로 사용하는 quar tree 개념을 도입하여 압축율을 개선시키고, 기존의 BTC와 그 성능을 비교하였다. 이 논문에서 제안하는 방법은 그레이 레벨의 변화가 적은 영역에서는 부화상의 크기를 크게 하고, 그레이 레벨의 변화가 큰 영역에서는 부화상의 크기를 작게 하여 전체 부화상의 갯수를 줄임으\ulcorner\ulcorner영상 데이타의 압축을 행하였다. 또한 비트 평면의 효율적인 전송을 위하여 큰 크기의 부화상에 있어서는 Huffman run-length code를, 작은 크기의 부화상에 있어서는 lookup rable방식을 이용하였다. 컴퓨터 시뮬레이션 결과, 크기가 256x256이고, 그레이 레벨이 256인 영상에서 평균 0.8bit/pel의 압축 효과를 얻었다.

• 대한의용생체공학회:의공학회지
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• 제23권2호
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• pp.119-130
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• 2002

무시멘트 인공 고관절 전치환술 후, 복합재료 스템을 갖는 대퇴골의 장기 거동과 인공 대퇴 보철물의 설계 성능을 분석하기 위하여 비선형 유한요소 프로그램이 개발되었다. 한 발로 서 있을 때의 관절 접촉 하중과 근육하중이 적용되었고, 816개의 brick요소를 갖는 타원형 단면의 복합재료 스템으로 치환된 대퇴골이 3차원 유한요소로 모델링 되었다. 프로그램을 사용하여 대퇴골의 밀도 변화, 응력분포, 상대미소운동이 plate cut과 bend mold와 같은 제작 방법에 대한 스템의 적층 각도 변경에 따라서 평가되었다. 결과는 코발트 크롭 합금, 티타늄 합금, 스테인레스 강과 같은 금속 재료보다 AS4/PEEK, T300/976과 같은 복합재료가 적은 골 흡수를 보였다. 대퇴골 보철물의 장기 안정성 증대는 적당한 복합재료의 적층과 적층 각도의 선택에 의하여 얻어질 수 있었다.

• Toxicological Research
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• 제22권4호
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• pp.411-416
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• 2006

This study was carried out to investigate the spaciotemporal plasticity of intergeniculate leaflet in postnatal mongolian gerbil using genetically modified pseudorabies virus recombinant, which was a kind of excellent neurotracer with the ability to transpass the neuronal synaptic cleft. In addition, we tried to evaluate the special role of intergeniculate leaflet as a signal controler of circardian rhythm by expression of various nourotransmitters in suprachiasrnatic nucleus. The PRV-BaBlu, a genetically modified strain of PRV-Bartha with lac-Z gene, was injected into vitreous body of postnatal mongolian gerbil, and immunostained. The PRV-Bablu infected the neurons in intergeniculate leaflet of postnatal mongolian gerbil, and the degree of viral infection in postnatal period of experimental animals had tendency to increase with time consuming. This results showed that the mutant PRV-Bar-tha strain with lac-Z gene, PRV-BaBlu, was a very excellent neurotracer to localize the retinogeniculate tract with infection of neurons in intergeniculate leaflet specially.

• 영재교육연구
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• 제21권1호
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• pp.19-38
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• 2011

이 연구에서는 현재 학생들의 인지양식에 부합되는 UCC 활용 교수 학습 모형(4C 모형)을 영재학생들에게 적용하였을 때 과학 관련 정의적 특성의 효과 면에서 어떤 성별 특성이 있는지 알아보고자 하였다. 이를 위해 영재학급 학생들을 대상으로 UCC 활용 프로젝트학습을 실시한 후 그에 대한 인식을 조사하였고, 과학 관련 정의적 특성에서의 사전 사후 검사 결과를 비모수 검정을 통해 분석해 보았다. 그 결과, 영재학급 학생들은 UCC 활용 프로젝트 학습에 매우 적극적으로 임하였으며 남학생보다 여학생의 흥미와 참여도가 더 높았고, UCC 제작에 관한 어려움은 남학생이 더 많이 느끼는 것으로 나타났다. 또한 남학생들의 경우 유의미한 변화가 없었지만 여학생들의 창의성이 향상되었고, 과학 불안이 감소되었다. 따라서 UCC 활용 프로젝트학습은 남학생보다 여학생에게 더 효과적임을 알 수 있었다.