저장 온도 및 상대습도가 비타민 정제 중 지용성 비타민 함량의 변화에 미치는 영향

김동섭,이재황,김세곤,이동언,박석준,이진희,이강표,최성원,백무열 경희대학교식량자원개발연구소 2007 硏究論文集 Vol.26 No.1

반응중심 문학활동이 유아의 조망수용능력에 미치는 영향

이기영 ; 최성열 ; 신성철 김천대학교 2009 김천대학교 논문집 Vol.30 No.-

The purpose of this study was to identify the effect of response centered litera-ture activity on children's perspective taking, To demonstrate the effect of response centered literature activity, 65 children at the age 5 were subjected to this study, and they were to 2 groups and were each located to experiment group who were to go through 24 response centered literature activity and comparison group who were read 8 picture books. This study surveyed the children's per-spective taking, the pre-test, post-test to examine the effect of response cen-tered literature activity. The data collected from the pre-test and post-test. ANCOVA procedure was conducted to analyze the effects of the experimental activities compared to the comparison group. The test results demonstrated that children in the experiment group made significant improvement on perspective taking. In conclusion, these activities were designed to correspond to children's experience, interest and demands by using of picture books, it is highly expected to be able to used in the field as useful social and emotional education.

중·고등학생의 인터넷 중독수준에 따른 정신건강 및 학교적응의 차이

이기영 ; 최성열 ; 신성철 김천대학교 2006 김천대학교 논문집 Vol.27 No.-

Abstract This study is to find out the difference of mental health and school adaptation according to internet poisoning of junior and senior high school students, and the studyresults are as follows. First, it was found that the internet poisoning level of junior high school students is higher in all subordinate factors than that of senior high school. Second, regarding the difference of self among mental health according to inter-net poisoning level of junior and senior high school students, it was found that the higher the internet poisoning level, that is, the closer to internet poisoning stu-dents, the more problems were in emotion sell, learning self, coping self, body self. As to the difference among mental health, it was found the more the students used internet, the higher the degree of affect, neurosis, somaticization, acting, etc. Lastly, regarding the difference of social support among mental health, it was found that the lower the internet poisoning level, the more the students think that they receive more support from their families, friends and relatives. Third, in the difference of school adaptation according to internet poisoning level of junior and senior high school students, it was found that the higher the internet-poisoning level of students, the more difficult were they in adapting themselves to school life. Especially, the higher the internet poisoning level, the more difficult were they in all the subordinate factors of school adaptation. So, it was revealed that the more exposed to internet students, the more student failed in adapting to school where they stayed for the longest time, In conclusion, it was found that there was a difference in mental health and school adaptation according to internet poisoning level, and the closer to internet poisoning, the more difficulties they suffer in mental health and school adaptation. Therefore, it seems urgent to develop treatment or a prevention program for them.

광주전남지역 정상 신생아의 코의 형태와 계측치에 대한 연구

이유진,양정열,이승찬,천지선,박상기 朝鮮大學校 附設 醫學硏究所 2003 The Medical Journal of Chosun University Vol.28 No.2

Background and Objectives: Cleft lip and palate are common defects in congenital deformity. They are the most frequent deformity in the face. Nose deformity is most common among various facial deformity at the center of face. So we must operate to correct the deformity at the earliest stage to give a patient and parent spiritual relief from anxiety, and it is the trend of the treatment recently. We must know the facial anthropometry in newborn to try at the early stage, but there is a lack of literature and research on newborns. So we carried out this research to form base data for operations. Materials and Methods : The noses of 90 newborns in Gwangju-Cheonnam area were analyzed quantitatively, based on 10 nasal measuring points and 13 anthropometric values taken directly from the face of newborns. The relationship between the nasal measurements were studied in 11 proportion indices. Results : Following are our mean values in newborn. Width of the nasal root was 13. 9mm. Width of the nose was 22. lrnm, Width of the columella was 4. 5mm. Height of the nose was 22.6mm. Length of the nasal bridge was 20.1mm. Nasal tip protrusion was 8.9mm. Width of the nostril floor was 6.4mm. Thickness of the nasal ala and length of the nasal ala were 4.0mm, 15.4mm. Length of the columella was 3.9mm. The most common nostril shape was Type II (0-45 degrees in inclination of the nostril axis from the horizontal). Nasal index was 97.8. Columella-nasal tip protrusion length index was 43.9. Conclusion : The development of the columella was relatively incomplete in the case of newborn and was the result to appear. The normal indicies could be used clinically in identifying the it's normality as well as morphologic characteristics of the craniofacial structures. They also could be used in differential diagnosis between the morphologically similar congenital craniofacial anomalies. In preoperative design, in setting the criteria of the postoperative results, and assessing the effect of the operation, Finally, they supply the plastic surgeon and the other specialists in the craniofacial surgery with basic normal population data.

도암호의 수질과 어류군집 특성 연구

이상하,최재석,이광열,장영수,임인수,허우명,김재구,김범철 강원대학교 부속 환경연구소 2005 Journal of the Environment Vol.2 No.-

To investigate nutrient dynamics of the lake and fish community, both water and fish samples were collected at three different areas (dam site, upper inflowing and downstream of lake outfow) for one year from Sep.2004 to Aug.2005 During the experimental periods, mean concentration of chl, a in epilimnetic layer (0-5m) was 18.5mg^(-3) and transparency ranged from 0.3m to 2.4m, respectively. In nutrient, mean concentrations of TP and TN were 111 mgP m^(-3) and 4.4 mgN L^(-1), respectively. Based on the water quality standard suggested by U.S.EPA(*1976), the trophic state of Lake Doam was classified as eutrophic state. Total number of fish collected in Lake Doam was 9,600 indiveduals in 26 species of 6 family. Sixteen of Korean endemic soecies including H. mylodon, A. signifer, P. tenuicorpa occurred. O. mykiss as introduced fish was also found in Lake Doam. Dominant and subdominant species were P. herzi and Z. platypus that took about 34.6% and 22.5% of total fish composition, respectively. Six species including A. signifer. P. tenuicorpa. and R. kumgangensis were rare in Lake Doam. Pelagic typw of figh commonly occurred at upper regions, whereas benthic type was mainly domenated at downstream area. Therefore, pollution source inflowed from the upper regions did not seriously affect downstream area (Songcheon water system) due to the role of dam as pollutant barrier. In addition high appearance of Comat type of fish that si hybrid between gold fish (C.auratus) and C. auratus was found in the lake, It was unclear the reasons that high prorortion of mutant species apperared in the lake. Further more researches are required in this area.

효율적인 모바일 서비스를 위한 하이브리드 스트리밍 아키텍처

이성용,최황규,최창열 강원대학교 정보통신연구소 2005 정보통신논문지 Vol.9 No.-

To provide the seamless multimedia streaming service for mobile users, both performance of the mobile device and bandwidth constraint of the wireless network should be considered. Recently, in order to solve these problems, the QoS adaptive architectures as well as additional features are being devised. In this paper, we designed and implemented a hybrid architecture-based mobile media streaming system under the Linux environment. The implemented system features as follows. First, a hybrid architecture which complements shortcomings of the static and dynamic architectures is presented. The hybrid architecture is able to maximize the proxy utilization rate by dividing the proxy into the related functions according to computation and disk access rate. Second, the new resource monitoring scheme that efficiently manages resource of the proxy is proposed. Third, the work prediction module is added to choose exactly the proxy which finish the task earlier than others. The experimental results demonstrate that our system decreases not only the user-perceived latency, but also the proxy overload. Furthermore, it has an advantage of reducing the traffic between the proxy and the system manager.

정서 지능 검사의 타당화 연구

이기영,최성열 한국아동교육학회 2003 아동교육 Vol.12 No.2

This study is intended to verify an appropriateness of a test tool for elementary school students, which was made by Oh Suk-Yeong(1966) and modified by Jang Jeong-Ae (1998), in order to examine the test tool of the emotional intelligence for elementary school students, as a part of providing the basic data for a development of a new test tool. The survey was conducted for 250 students in the fifth grade and 150 students in the sixth grade, except dishonestly-responded 12 students among total 412 students of 'P' and 'S' Elementary School located in Dalseo-gu, Daegu. The following is the result of looking into a reliance of the Emotional Intelligence test through statistics of the emotional intelligence test. Firstly, the overall average answer rates were similar. However, there was a high variation of a minimum value and maximum value. Secondly, students in the fifth grade had higher score of the emotional intelligence than students in the sixth grade for all areas except the emotional control, as the result of examining the difference o the emotional intelligence score by grades. In terms of the difference of the emotional intelligence score by gender, female students had higher average score than male students for all areas except a repletion. Thirdly, there was the different reliance on the test tool of the emotional intelligence between male and female students. However, the overall reliance by grade was similar. Next, the survey indicated that there was a low relation in terms of a relationship between the whole and items. However, the appropriateness of individual item was low. Finally, there was the relatively low relation between sub-areas, as the result of looking into the appropriateness of the emotional intelligence test. However, it showed the relatively high relation between sub-area and the whole.

PLCM을 이용한 카오스 블록 암호화 기법

이성우,이민구,박정렬,신재호 東國大學敎 産業技術硏究院 2005 산업기술논문집 Vol.15 No.1

본 논문에서는 동력학적 특성이 좋은 PLCM을 이용한 256비트 길이의 암호 키와 32비트 데이터 블록의 카오스 블록 암호화 기법을 제안한다. 본 논문에서 제안한 기법은 256비트의 키에서 각 암호화 단계마다 사용될 32비트의 세션 키 두 개를 생성해서 PLCM의 초기 값과 반복회수를 결정하는데 사용한다. 본 제안 기법은 피드백 구조와 대치 기능의 S함수를 통해 암호 강도를 향상시켰다. 또한 실험 결과와 안전성 분석을 통해 본 제안 기법이 통계적(Statistical) 공격에 매우 강함을 보여준다. In this paper, we propose a chaotic block encryption scheme using a PLCM (Piecewise Linear Chaotic Map) having a good dynamical property. The proposed scheme has a block size of 32 bits and a key size of 256 bits. In the proposed scheme we use two 32-bit session keys generated from 256-bit key to decide the initial value and the number of iteration of PLCM. To enhance the strength of security we use a feedback structure and a S (Substitution) function. With results of test and analyses of security we show the proposed scheme is very secure against statistical attacks.

PC 클러스터를 이용한 수치최적의설계의 병렬처리

이상경,조창열 울산대학교 2001 공학연구논문집 Vol.32 No.2

3차원 천음속 날개의 공력형상 설계최적화를 위하여 저렴한 비용의 PC 클러스터를 제작하였다. 클러스터는 3개의 노드로 구성되었으며, 리눅스 0S를 설치하고 메시지 전달방식의 통신 라이브러리인 MPI(Message Passing Interface)를 사용하였다. 이 시스템을 이용하여 24개의 설계변수를 가진 3차원 천음속 날개의 항력최소화 문제를 해석하였다. 유동장 해석을 위해 오일러 코드를 사용하였고, 일반적인 영역분할방식의 유동장 병렬처리를 택하는 대신에 수치최적화 알고리즘 중 민감도를 계산하는 부분을 병렬처리 하였다. 설계결과는 단일 노드를 사용한 순차계산의 결과와 동일하였으나, 설계 소요시간은 큰 폭으로 감소하였다. 본 연구의 결과로 저렴한 비용으로 우수한 성능을 갖춘 3차원 항공기 날개의 형상최 적설계 시스템을 구성할 수 있었으며, 향 후 이를 이용하여 보다 복잡하고 정교한 전산원용설계시스템으로 발전할 수 있는 기초를 마련하였다. A cheap FC-Cluster was assembled for the aerodynamic design optimization of three dimensional transonic wing. The cluster has 3 nodes in which Linux Operating System and MPI as message passing library are installed. The system was applied to solve a wave drag minimization problem for transonic wing with 24 design variables. The Euler method was used to solve the flow around the wing, The process of sensitivity-derivative computation was parallelized in the numerical optimization algorithm, instead of using domain decomposition technique as usual parallel processing in the computational fluid dynamics. The design result with the parallel processing is exactly same as the one with the serial computation, while the parallel computation time was considerably reduced. The cheap shape optimization system based on the PC-cluster developed here could be a starting of the computer-aided design system with more sophisticated geometry generating module and flow analysis methods in the future.

기능성 소화불량증 환자의 질병특이적 삶의 질과 질병 의거

이상열,박민철,최석채,설지환,서현우,류미경,최명규 圓光大學校 醫科學硏究所 2004 圓光醫科學 Vol.19 No.1