저체중 또는 과체중 청소년에서 캠프 프로그램을 이용한 영양 교육효과에 관한 연구

성미경,승정자,류화춘,박재년,박동연,최미경,조경옥,최선혜,이윤신,김유경,이은주 대한지역사회영양학회 2003 대한지역사회영양학회지 Vol.8 No.4

This study was performed to evaluate the effectiveness of a nutrition education program developed for nutritionally imbalanced adolescents. A summer nutrition camp was held for 23 overweight and 16 underweight subjects. Its effectiveness with regard to was evaluated at the end of the camp and 6 months later. Nutrition knowledge, nutritional attitude, food behavior, nutrient intake, exercise habit and ideal body figures desired by the subjects. The results showed significantly higher nutrition knowledge scores at the end of the camp as compared to those obtained prior to the camp program, and these scores were maintained for at least six months. Nutrition attitude scores also improved after the education program, and these improved scores also lasted for 6 months. However, the food behavior scores measured 6 months after the education program were not significantly different from those obtained prior to the camp. Also, the exercise habit, the ideal body figures and the body figures desired by the subjects remained unchanged. When nutrient intakes of subjects were assessed before the program and 6 months later, the mean daily vitamin C intake was significantly increased after the education program. Also, the intake of iron from plant food sources increased in the overweight subjects, while less iron from animal source were consumed by the underweight subjects. Both groups tended to consume more vegetables and fruits 6 months after the education program which may have contribute to the higher vitamin C and plant-based iron intakes. These results indicate that a 4-day nutrition education camp program sustained changes in nutrition knowledge and nutrition attitude for 6 months. The increased intake of vegetables and fruits was also achieved through this education program. However, changes in dietary behavior in adolescents may require repeated education.

인터넷 통신에서 자바 바이트코드를 이용한 애플릿 보안

윤찬호,석경휴,나기창,배철수,나상동 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.1

Java applets are downloaded from web server through internet and executed in Java Virtual Machine of clients' browser. Before execution of java applets, JVM checks bytecode program with bytecode verifier and performs runtime tests with interpreter. However, these tests will not protect against undesirable runtime behavior of java applets, such as denial of service attack, email forging attack, URL spoofing attack, or annoying sound attack. In order to protect malicious applets, a technique used in this paper is java bytecode modification. This technique is used to restrict applet behavior or insert code appropriate to profiling or other monitoring efforts. Java byte modification is divided into two general forms, class-level modification involving subclassing non-final classes and method-level modification used when control over objects from final classes or interface. This paper showed that malicious applets are controlled by java bytecode modification using proxy server. This implementation does not require any changes in the web sever, JVM or web browser.

임신 40주와 출산 후 6주에 있는 20대 임산부 보행의 역학적 특성 비교

윤희중,문동안,정남주,금명숙,이경식,유실,김영란,한윤수 한국운동역학회 2000 한국운동역학회지 Vol.10 No.1

본 연구는 임신 40주와 출산후 6주간에 있는 임산부의 보행 동작의 특정을 규명함으로써 이와 관련된 연구자들에게 기초자료를 제공하고자 실시하였다. 이를 위해 임신 4주에 있는 임산부를 대상으로 1차 실험을 실시하였으며 동일한 대상자를 출산후 6주에 2차로 실험하여 자료를 수집하였다. 디지타이징 시 오차를 최소화하고 인체관절점의 분별을 위해 21개의 반사마커를 부착하였다. 10m의 보행주로를 걷는 동안 두 대의 비디오카메라를 이용하여60Hz로 자료를 수집하였으며 동시에 100Hz 지면반력자료를 수집하였다.수집되어진 자료는 DLT 방법을 사용하여 분석하였으며 이의 분석에 Kwon3d 프로그램을 활용하였다. 분석결과 다음과 같은 결론을 얻었다. 1. 임신 40주와 출산 후 6주의 보행 시 지지시간과 스윙시간의 비율이 다르게 나타났으며 보폭과 보간, 활보장은 임신 40주에서 더 큰 값을 보였다. 상체 전경각 역시 임신 40주에서 더 큰 값을 보였다. 힙관절, 무릎관절, 발목관절각도는 S1이 출산후 6주에서 큰 값을 보인반면 S2는 출산전후에 큰 변화를 보이지 않다. 2. 상하지면반력의 경우 FP1과 FP2는 임신 40주보다는 출산 6주에서 큰값을 보였지만 FP3는 임신 40주에서 보다 큰값을 보이고 있었다. 전후지면반력의 경우 출산전과 후 모두 Fy2에서 보다 큰 값을 보이고 있었다. This Study was to investigate kinematical characteristic comparison of the gait pregnant 40weeks and after delivery 6weeks 20´s women and provide the basic data. To accomplish this study, in the first, carry out an experiment with the pregnant women in the pregnant 40weeks on the videotape, and than the second, make an experiment with the kinematic data. Kinematic data were filtered with a low-pass, fourth-order Butterworth filter with an effective cut off frequency of 6Hz. The conclusions were drawn as follows; 1. Floor contact Periods(stance and swing rate) were differed from before and after the delivery and a pregnant 40 weeks was greater than after delivery 6 weeks in the step, width, stride. Also, a pregnant 40 weeks was greater than after delivery 6 weeks in the front angular. And the other angular components were represented similar pattern. 2. In the vertical load, delivery 6 weeks was grater than a pregnant 40 weeks in the FP1(first peak) and FP2(valley). And FP3(second peak)was represent that a pregnant 40 weeks was greater than delivery 6 weeks. Also, in the horizontal shear, Fy2(progressional force)was greater than Fy1(breaking force) about time of the delivery.

국내산 중하(Metapenaeus joyneri) 내 주알레르겐 규명 : 가열 및 소화액에 의한 변화

윤성호,김현아,김현미,최정희,서창희,남동호,김윤근,민경업,박해심 대한알레르기학회 2004 천식 및 알레르기 Vol.24 No.2

폐지의 효소 탈묵

윤경동,박성배,박용현,엄태진 慶北大學校 農業科學技術硏究所 2004 慶北大農學誌 Vol.22 No.-

Cellulolytic enzymes were prepared from alkaline resistant microorganisms which were newly screened from calcic soil. Characteristics of enzymes and enzymatic deinking efficiency of wastepaper were investigated. The results were summarized as fellows: 1. The recovery rate of crude enzyme was 93.7% in Bio-B and 57.4% in Bio-F. 2. The protein content in crude enzymes was lowest and the thermal stability of crude enzymes was highest in Bio-F. 3. The brightness gain of Bio-F deinked pulp was best in ONP and Bio-B deinked pulp was best in MOW. 4. The reject yield was increased with enzymatic deinking flotation process. 5. The residual ink area of paper was increased with enzymatic deinking and large size of ink particles were remained in paper.

음향방출을 이용한 콘크리트 부재의 미시적 파괴특성의 온라인 모니터링

윤동진,이진경,이준현 韓國非破壞檢査學會 1999 한국비파괴검사학회지 Vol.19 No.1

콘크리트는 다상(multi-phase)의 재료로서 구성되어지는 복합재료의 일종으로써 준취성(quasi-brittle)적인 재료적 특성을 가지고 있기 때문에 실제 복잡한 미시적 파괴특성을 나타낸다. 따라서 콘크리트 구조물의 안전성 확보를 위해서는 먼저 하중의 증가에 따른 콘크리트 내부의 변형특성 및 미시적 파손기구를 파악하여야 하며, 특히 실제 구조물에 있어서는 이들 특성들을 비파괴적으로 상시(on-line) 모니터링 하여야 할 필요가 있다. 따라서 본 연구에서는 3점 굽힘 하중을 받는 콘크리트 부재의 미시적 파손기구 및 각 파손기구에 대한 AE 특성을 명확히 함으로써 콘크리트 부재의 미시적 손상 및 파괴 특성을 비파괴적으로 평가하고 AE 발생원 위치 추정 기법을 이용하여 균열 발생 및 진전거동을 평가하였다. Since concrete is an inhomogeneous material consisting of larger aggregates and sand embedded in a cement paste matrix, it relatively shows a complex failure mechanism. In order to assure the reliability of concrete structure, microscopic fracture behavior and internal damage progress of concrete under the loading should be fully understood. In this study, an acoustic emission(AE) technique has been used to clarify microscopic failure mechanism and their corresponding AE signal characteristics of concrete under three-point bending test. In addition 2-dimensional AE source location has been performed to monitor the progress of an internal damage and the successive crack growth behavior during the loading. The relationship between AE signal characteristics and microscopic fracture mechanism is discussed.

광학 마이크로패턴의 광산란 Simulation에 관한 연구

윤철용,현동훈,유경선 한국공작기계학회 2009 한국공작기계학회 춘계학술대회논문집 Vol.2009 No.-

This paper has to gain visual effect as light scattering by various angle and phase using optical micro pattern for metal. Also applying to optical micro pattern for metal surface design by developing optical technology and ultra-precision machining technology.

실업계 고등학생의 직업기초능력 향상을 위한 문제중심학습(PBL)의 효과

박동열,이성덕,김종오,조경희,강경심,박윤희,김대영 한국농업교육학회 2006 농업교육과 인적자원개발 Vol.38 No.4

21세기 지식기반사회는 전문지식뿐만 아니라 효율적인 직무 수행에 필요한 의사소통능력, 문제해결능력, 자기관리능력 및 직업의식 등의 직업기초능력이 강조되고 있다. 직업기초능력은 생의 어느 한 시기에 갑자기 이루어지거나 완성되는 l회적인 것이 아니라 개인의 생애단계에 따라 변화하고 발달하는 것이며 취업자뿐만 아니라 진학자에게도 잠재적으로 매우 중요한 요소이므로 실업계 고등학생의 직업기초능력 향상은 중요한 현안이라 할 수 있다. 이 연구는 여러 교수학습유형 중 실업계 고등학생의 직업기초능력 향상에 타당하리라 사료되는 문제 중심학습 모형(Problem-based learning model)을 선정, 이에 기초한 전문교과 수업을 실시하여 실업계 고등학생의 직업기초능력 향상에 기여할 수 있는지 실증적으로 분석하고자 하였다. 연구 목적 달성을 위해 「대학생의 직업기초능력 유형 검사도구(박동열, 2005)」를 실업계 고등학교 전문가 협의회를 통해 수정ㆍ보완, 이를 활용하여 실업계 고등학생의 직업기초능력을 파악하고, 문제중심학습 모형에 따른 실제 전문교과 수업을 통한 실업계 고등학생의 직업기초능력 향상 정도를 알아보기 위하여 농업계열, 공업계열, 상업계열, 가사ㆍ실업계열 4명의 현직 교사가 문제중심학습 수업 매뉴얼에 따라 실제 수업에 적용 하고 그 결과를 분석하였다. 연구 결과 문제중심학습 모형이 실업계 고등학생의 수업만족도에 긍정적인 영향을 끼쳤으며, 문제중심학습 모형에 따른 전문교과 수업을 통해 실업계 고등학생의 모든 영역의 직업기초능력(문제해결 및 발표 능력, 기술활용능력, 자원활용능력, 수리능력, 조직이해능력, 대인관계능력, 자기관리능력)이 향상되었음을 실증적으로 알 수 있었다. The purpose of this research was to analyze the fitness of problem-based learning(PBL) for improving the core competencies of vocational high school students. This study examined the core competencies of vocational high school students by using the advised BARS test for vocational high school. And in order to examine the effectiveness of the courses based on PBL, 4 teachers had taught the designed courses by PBL method during the regular class in vocational high school : agricultural; technical; commercial, home economic high schools. The major findings in this study were as follows: 1) The courses based on PBL had an positive effect on the class satisfaction of vocational High school students. 2) We found out that the courses based on PBL have a positive effect on improving vocational key competencies of Vocational High school students.

게 껍질을 이용한 수중의 중금속 제거

안희경,박병윤,김동석 한국환경과학회 2000 한국환경과학회지 Vol.9 No.5

In order to examine the availability and effectiveness of crab shell for the removal of heavy metals in aqueous solution, the crab shell was compared with cation exchange resin (CER), zeolite, granular activated carbon (GAC) and powdered activated carbon (PAC) on aspects of heavy metal removal capacity, rate and efficiency. In the removal of Pb, Cd and Cr, the heavy metal removal capacity of crab shell was higher than those of any other sorbents (CER, zeolite, GAC, PAC), and the order of heavy metal removal capacity was crab shell > CER > zeolite > PAC =~GAC. However, in the removal of Cu, the result of crab shell was slightly lower than that of CER. The initial heavy metal removal rate was affected by the sorts of sorbents and metals. In all heavy metals, the heavy metal removal rate of crab shell was higher than those of any other sorbents. Under the heavy metal concentration of 1.0 mmole/ℓ, the heavy metal removal efficiency of crab shell was maintained as 93∼100 %, which was much higher than those of any other sorbents.

급성 척수손상시 세포사망의 특성

진동규,김영수,윤도흠,주진양,이경희,성제경 대한신경외과학회 1999 Journal of Korean neurosurgical society Vol.28 No.12