진주산업대학교의 樹木相과 管理에 관한 소고

김우룡,안현철,조현서,추갑철,송재철 진주산업대학교 농업기술연구소 2001 農業技術硏究所報 Vol.14 No.-

This study was carried out to investigate the woody plants of the Chinju National University. Field survey was carried out 3 times from July to October 2000. The results obtained from this study were as follows : 1. Among 145 kinds, 88 genera, 53 families of total woody plants, the needle-leaved trees of 28 kinds, 15 genera, 6 families and broad-leaved trees of 117 kinds, 73 genera 47 families were found. 2. Among the 4 investigated districts, area II showed the most abundant woody plants(92 kinds). 3. The endemic woody plants to Korea in Chinju National University were 6 species, They are Pinus koraiensis, Abies koreana, Buxus microphylla var. koreana, Cornus walteri, Carpinus coreana, Gleditsia joponica var. koraiensis. 4. The species of rare and endangered plants were 6 species, There are Corylopsis coreana, Juniperus chinensis var. sargentii, Koelreuteria paniculata, Abies koreana, Magnolia kobus, Tsuga siebodii and The exotic woody plants in korea were 59 kinds 41 genera 28 families. 5. The most abundant populations were Thea sinensis(271 populations) and Ilex crenata(247 populations).

3T Multi Voxel Spectroscopy에서 SENSE와 NEX 변화에 따른 정상인 뇌 대사물질 변화 분석

성열훈,임재동,이재현,조성봉,우동철,최보영,Seong, Yeol-Hun,Rhim, Jae-Dong,Lee, Jae-Hyun,Cho, Sung-Bong,Woo, Dong-Chul,Choe, Bo-Young 한국의학물리학회 2008 의학물리 Vol.19 No.4

자기공명분광법(magnetic resonance spectroscopy: MRS)은 인체내 대사물질을 정량분석하여 병변의 조기진단 및 정밀진단에 도움을 주고 있으며, 최근 임상에 이용되고 있는 자기공명분광법은 single voxel spectroscopy (SVS) 기법과 multi voxel spectroscopy (MVS) 기법이 있다. 본 연구에서는 SENSE와 NEX를 변화시킨 multi voxel spectroscopy (MVS)의 데이터와 기존 single voxel spectroscopy (SVS)의 데이터를 비교 분석하여, 각각의 데이터의 유의성 차이를 평가하고자 하였다. 정상 성인 지원자 13명(남자: 5명, 여자: 8명, 평균 41세, 표준편차 11.65세)을 대상으로 chemical shift image (CSI)를 이용한 MVS검사를 시행하였다. 장비는 3.0T Achieva Release Version 2.1 (Philips Medical System, Netherland)을 이용하였고, 8 channel head coil을 사용하여 brain thalamus 부위에서 CSI spectrum을 1 slice 획득하였다. Scan parameter로는 FOV (field of view): $230{\times}184mm^2$, TR (time to repetition): 2000 msec, TE (time to echo): 288 msec, matrix: $15{\times}12$, VOI(view of interest): $110{\times}110mm^2$, voxel size: $15{\times}15{\times}15mm^3$로 하였다. SENSE factor (S)와 NEX (N)는 S1*N1, S2*N1, S2*N2, S3*N2로 변화하여 스펙트럼을 획득하였고, 각 scan time은 5분 54초, 3분 32초, 6분 20초, 4분 20초였다. 얻은 모든 MRS 데이터는 jMRUI 3.0 Version 프로그램에서 분석하였고, SENSE factor와 NEX를 변화시켜 얻은 MVS data 그룹들이 정상 성인 뇌 대사물질의 변화에 영향을 주는지 검증하기 위해 그룹 간에 ANOVA분석을 실행하여 P 값이 0.05보다 크게 나오면 그룹들 사이에 유의한 차이가 없다고 분석하였다. NAA/Cr과 Cho/Cr의 상대적 비율은 MV와 SVS사이에서는 유의한 차이가 없었다. 즉, SENSE factor와 NEX를 변화시켜 얻은 MVS data에서 정상 성인 뇌조직의 대사물질의 변화를 관찰한 결과, S1*N1의 NAA/Cr은 $1.45{\pm}0.03$, Cho/Cr은 $0.88{\pm}0.03$이고, S2*N1의 NAA/Cr은 $1.44{\pm}0.03$, Cho/Cr은 $0.87{\pm}0.05$, S2*N2의 NAA/Cr은 $1.43{\pm}0.02$, Cho/Cr은 $0.87{\pm}0.04$이며, S3*N2의 NAA/Cr은 $1.45{\pm}0.03$, Cho/Cr은 $0.87{\pm}0.03$으로 나타났다(F-value : 1.37, D.F : 3, P-value : 0.262). 그러나 데이터의 질을 측정하기 위한 MVS 데이터의 NAA Peak line-width는 SVS 데이터의 NAA Peak line-width 보다 약 3배 정도 넓었다. 본 연구에서는 MVS에서 SENSE factor와 NEX 값을 다양하게 변화시킨 MVS의 데이터와 SVS의 데이터가 큰 차이가 없음을 확인하였다. 즉, 어는 특정 부위의 뇌 조직의 대사물질은 MVS와 SVS 기법 모두 큰 차이가 없음을 확인할 수 있었다. 그러므로 MVS는 SVS보다 광범한 부위를 짧은 시간 안에 검사할 수 있으므로 매우 유용한 방법이라고 사료된다. To evaluate the metabolic changes in normal adult brains due to alterations SENSE and NEX (number of excitation) by multi voxel MR Spectroscopy at 3.0 Tesla. The study group was composed of normal volunteers (5 men and 8 women) with a mean ($\pm$ standard deviation) age of 41 (${\pm}11.65$). Their ages ranged from 28 to 61 years. MR Spectroscopy was performed with a 3.0T Achieva Release Version 2.0 (Philips Medical System-Netherlands). The 8 channel head coil was employed for MRS acquisition. The 13 volunteers underwent multi voxel spectroscopy (MVS) and single voxel spectroscopy (SVS) on the thalamus area with normally gray matter. Spectral parameters were as follows: 15 mm of thickness; 230 mm of FOV (field of view); 2000 msecs of repetition time (TR); 288 msecs of echo time (TE); $110{\times}110$ mm of VOI (view of interest); $15{\times}15{\times}15$ mm of voxel size. Multi voxel spectral parameters were made using specially in alteration of SENSE factor (1~3) and 1~2 of NEX. All MRS data were processed by the jMRUI 3.0 Version. There was no significant difference in NAA/Cr and Cho/Cr ratio between MVS and SVS likewise the previous results by Ross and coworkers in 1994. In addition, despite the alterations of SENSE factor and NEX in MVS, the metabolite ratios were not changed (F-value : 1.37, D.F : 3, P-value : 0.262). However, line-width of NAA peak in MVS was 3 times bigger than that in SVS. In the present study, we demonstrated that the alterations of SENSE factor and NEX were not critically affective to the result of metabolic ratios in the normal brain tissue.

서비스의 개념과 척도에 관한 연구

조현철,강석후 漢陽大學校 産業經營硏究所 1992 産業經營硏究 Vol.4 No.-

소비자 만족/ 불만족과 불평행동 간의 관련성에 관한 연구

조현철 漢陽大學校 産業經營硏究所 1994 産業經營硏究 Vol.6 No.-

운동 직후 고온 침수가 EPOC와 TG/ fatty acid cycling에 미치는 영향

조현철,김종규,강민철,홍완표,박노혁 龍仁大學校 體育科學硏究所 2005 體育科學硏究論叢 Vol.15 No.1

The purpose this study was to estimate effects of EPOC and TG/fatty acid cycling on warm water immersion of immediately after exercise. To elucidate the role of fatty metabolism, a sequence of five experiments was performed. Seven physically active, male subjects volunteered to participate in the presented study. The mean values for age, body mass and hight were 25±1.52 yr, 79.2±9.52kg, 177.2±4.62cm, respectively. After giving consent, participant visited the laboratory on six occasion: 1) 30min of treadmill exercise VO2max 55% and a further 60min recovery, 2) 30min partial body warm water immersion in a 39℃ and a further 60min recovery, 3) 30min whole body warm water immersion in a 39℃ and a further 60min recovery, 4) 30min of treadmill exercise VO2mas 55% and in 30min partial body warm water immersion in a 39℃, 5) 30min of treadmill exercise VO2max 55% and in 30min whole body warm water immersion in a 39℃. When compared by recover period within repeat on the base of changes of subjects average body temperature, not effective interactions among repeat. However, partial and whole body warm water immersion immediately after exercise shows it as the best effective exercise for VO2max 55%, partial and whole body warm water immersion. When compared by recover period within repeat on the base of changes of subjects EPOC, effective interactions among repeat(p<.05). Partial and whole body warm water immersion immediately after exercise shows it as the best effective exercise for VO2mas 55%, partial and whole body warm water immersion. The catecholamines concentration was significantly higher partial and whole body warm water immersion than exercise of VO2max 55%(p<.05). The TG concentration and free fatty acid was significantly higher partial and whole body warm water immersion immediately after exercise than exercise of VO2max 55% than Partial and whole body warm water immersion(p<.05). Based on the facts that we have discussed above, human metabolism is increased by both exercise and conditions of immersion and partial and whole body warm water immersion immediately after exercise than exercise of VO2maw 55% shows it as better effective treatment for increasing TG/Fatty acid cycling activation. Due to extremely heavy stress complained by subjects during whole body immersion, it is thought that more researches on it should be required.

因果推論 모델로서의 LISREL의 槪要에 관한 硏究

趙顯哲 漢陽大學校 産業經營硏究所 1990 産業經營硏究 Vol.2 No.-

What SERVPERF in Recruiting Website Does Determine Users` Perceived Value, Satisfaction, and Revisit Intention in Korea?

( Chul-ho Cho1 ),( Jae Hoon Hyun ) 한국품질경영학회 2015 한국품질경영학회 학술대회 Vol.2015 No.2

Purpose This study aims to identify the factors of the recruiting websites’ service quality that determines the users’ perception and behavior and the moderating role of job exploration type in Korea. Design/Methodology/Approach This research is designed to address the casual relation between service quality of recruiting websites and revisit intention by introducing perceived value and user satisfaction as mediating variables. Based on pilot tests and previous studies of website quality, we devised a SERVPERF evaluation model pertaining to the web service quality of recruiting website. 302 valid observations were collected and used to examine the constructs through structural equation modeling. Findings The findings show that interactivity, aesthetics, reliability and usability influence service quality of recruiting websites through perceived value and satisfaction as mediators. This study also found that job exploration type moderates, as a user group seeking full time jobs recognizes value from the quality of information and scope of interactivity, while users searching for part time jobs appreciate aesthetics. Implications This research contributes to the literature by the provision of the elements that influence service quality of recruiting websites and by examining perceived value as a new mediator. The findings also provide practical implications for recruiting websites to tune strategic approach by different motives of user groups. Originality/Value A number of previous studies examined web service quality and users’ reaction in the area of e-commerce and general websites but there were lack of attempts to identify service quality in the context of online recruitment. This study fills the research gaps by providing the SERVPERF evaluation model examining the elements that influence quality of recruiting website and identifying how service quality affects users’ perception and behaviour.

LISREL의 下位모델: (1)確認的 要因分析에 의한 構成槪念 妥當性 檢定

趙顯哲 漢陽大學校 産業經營硏究所 1995 産業經營硏究 Vol.7 No.-

가설설정과 가설검정에 관한 오해

조현철 한양대학교 산업경영연구소 1999 産業經營硏究 Vol.11 No.-

남·여 레슬링 선수들의 비 시즌 동계훈련이 무산소성 파워 및 혈중 젖산과 암모니아농도에 미치는 영향

조현철,장호성,김종규 龍仁大學校 體育科學硏究所 2003 體育科學硏究論叢 Vol.13 No.2

The purpose of this study was to investigate the effect of an 8wk winter training program on body composition, anaerobic power and blood fatigue components. To examine this question, 6 males and 6 females amateur athletic wrestlers were randomly assigned to supervised an 8wk winter training program. Lactate, amonia concentration was measured before and wingate anaerobic test after 4wk to 8wk exercise program. Body composition was determined from electric impedance absorptiometry, wingate anaerobic test from a Lode wingate test to 30" . Results showed that body composition just changed in male, but muscle mass did not change in female. Male and female amateur athletic wrestlers increased anaerobic peak power and mean power all. Blood lactate and ammonia concentration decreased when measured 4wk into 8wk to the training program, but female amateur athletic wrestlers increased it. These results suggest that winter training program for amateur athletic wrestlers should be alter body composition, anaerobic power and blood fatigue components in winter training program.