1910년대 조선에서 자유주의의 두 가지 유형과 성격

최선웅(Choi, Sun?woong) 호서사학회 2015 역사와 담론 Vol.0 No.75

Pekeris 도파관에서 음선 접근법을 이용한 지면파 해석

최지웅,Choi, Jee-Woong 한국음향학회 2009 韓國音響學會誌 Vol.28 No.3

지면파는 해저면 음속이 깊이에 따라 일정할 경우 해저면 음속으로 진행하는 음파로 일반적으로 모드분산으로부터 설명된다. 모드분산은 도파관의 기하학적 구조에 의한 음파의 반사 및 굴절에 의해 발생되므로 본 논문에서는 지면파를 음선이론에 기초하여 모의하였다. 지면파는 일련의 선두파들의 조합으로써 해석될 수 있으므로 [Choi와 Dahl, J. Acoust. Soc. Am. 119, 3660-3668 (2006)], 음선 접근법을 이용하여 시간영역에서 여러 경로로 전파되는 선두파들의 채널 임펄스 응답과 선두파 신호의 컨볼루션을 취하여 지면파를 모의한다. 모의된 지면파는 광대역 시간영역 포물선 방정식 기법을 이용하여 모의된 지면파와 비교, 검증된다. Ground wave is an acoustic wave propagating at a sediment sound speed in the case that sediment sound speed is constant with depth, which is explained by modal dispersion effects. In this paper, the ground wave in time domain is simulated using the ray-based approach, which is possible because the modal dispersion can be explained by the guiding of energy caused by reflection and refraction in the waveguide geometry. For a Pekeris waveguide, the ground wave can be interpreted as a sequence of head waves, called a head wave sequence [Choi and Dahl, J. Acoust. Soc. Am. 119, 3660-3668 (2006)]. The ground wave is simulated by convolution of the source signal with a channel impulse response of the head wave sequence, which is compared with simulated signals obtained via a Fourier synthesis of a complex parabolic equation (PE) field.

키토산을 첨가한 콤포짓트 레진의 기계적 성질과 항균성에 관한 연구

최낙찬,모웅남,이용준 조선대학교 구강생물학연구소 2003 口腔生物學硏究 Vol.27 No.1

The purpose of this study was to evaluate the mechanical and anti-microbial properties of newly prepared chitosan G for human gingival fibroblast. Compressive strength, diametral tensile strength and tensile strength of specimens of resin composite, with or without chitosan G incorporated, were measured. Using a SEM (S-4700, Hitach, Japan), pictures of microbes were taken and adherent capability of microbes to the surface of resin composite was investigated. The results were as follows; 1. The values of compressive strength, diametral tensile strength and tensile strength, composite resin containing 7㎎/㎖ chitosan G were higher than the control group(p>0.05) but composite resin containing 40 ㎎/㎖ chitosan G were either the same or lower than the control group(P<0.05) 2. The MIC of newly prepared chitosan G for S mutans KCTC 3065 and C albicans KCTC 7965 were more than 2 ㎎/㎖. 3. The adherent capability of microbes significantly decreased as the amount of chitosan G increased in the test specimens compared to the control group for C aibicans KCTC 7965 (P<0.05) but there was no statistical significance for S mutans KCTC 3065(p>0.05) . 4. The cytotoxicity of newly prepared chitosan G for human gingival fibroblast was not showed. In conclusion, resin composite with chitosan G incorporated did not show any statistically significant difference for mechanical properties (p>0.05) but it showed a significant antimicrobial effect against C albicans (P<0.05).

대학교양체육 선택요인에 관한 연구 : 스키·스노보드캠프를 중심으로 The Core of Sky and Snowboard

최웅재,박성재 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.4

This study set up a purpose for presenting students basic data that help in developing the university's culture studies by this paper, As rules that I mention above the sentence stipulate, 1 compared and analyzed the selective factor of university s culture studies by surveying 351 male and female students who are enrolled at H university in Seoul, The tool of measurement is a questionnaire that implies 24 items such as 8 items of personal characteristics, 16 items of selective factor, The data collected by the questionnaire which is framed by the self-administration method is analyzed by using SPSS 10.0 program The methods of analysis are reliability, t-test and one-way anova, On the ground of this process I could acquire something special as follows. The female group is higher than the male group and the lower grades is higher than the higher grades and the group that participates the class many times is higher than the group that joins the lesson once or twice and the group that organizes a high level of skill is superior than the group that forms a low level of skill in the selective factor of university's culture studies.

한국인 임신부에 있어서 영양소의 역가측정

최기영,김웅철,박기현,배도환 중앙대학교 의과대학 의과학연구소 1982 中央醫大誌 Vol.7 No.2

Animal and human studies indicated that inadequate diet for a prolonged period during pregnancy could injure mother, child, or both. In order to prevent this problem, maternal nutyitional status during pregnancy is very important and the evaluation of nutrition during pregnancy have been preceded by many authors in another countries. In Korea, nutrient intake studies of the pregnant women and nutrition surveys in adult by biochemical method have been performed, but there are no data nutrition surveys of Korean pregnant women have been made by biochemical method. In this regard, an exact biochemical titer of the nutrients and the degree of nutrient deficits in Korean pregnant women are needed. In this study, the mean titer of some nutrients and the degree of nutrient deficits by biochemical method in Korean pregnant women were assessed. The objected materials were consisted of 30 cases which had visited the departmant of Obstetrics & Gynecology, Chung Ang University Hospital for antenatal care(32wk-40wk) from March, 1981 to June, 1981. The cases with twin pregnancy, and the cases complicated with materal chronic wasting disease, diabetes, hydroamniosis, hypertensive disorder in pregnancy were excluded in this study. The results were as follows: 1. Mean titer of 6 hours urine execretion of thiamine, riboflavin and N'-methylniacinamide in Korean pregnant women was 44㎍, 466㎍, and 2.33㎎. 2. Mean titer of serum vitamin A, carotene, vitamin C, total protein, calcium, phosphorus, iron and total lipid was 48.1㎍, 154.7㎍, 0.8㎎, 7.0g, 9.8㎎ 3.5㎎, 93㎍, and 578㎎. 3. Percentage of nutrient deficits in Korean pregnant women based on the mean titer of Korean adults was as follow; thiamine-20%, N'-methylniacinamide-7%, total protein-5%, calcuim13%, iron-19%. 4. No cases were deficient in riboflavin, carotene, phosphorus, total lipid and the mean titer of riboflavin and carotene in Korean pregnant women were high compared with thw mean titer of Korean adults.

우수골프 선수들의 부위별 등속성 근력의 요인분석

최웅재 한국학교체육학회 2002 한국학교 체육학회지 Vol.12 No.2

본 연구는 골프에 대한 전문적인 체력이 있다고 판단되는 골프선수 33명을 대상으로 기본체력 요인 중에서의 근력요인을 Cybex-6000등속성 장비를 이용하여 골프선수의 근력요인을 분석하였다. 근력요인 분석시 상지, 몸통, 하지의 3가지의 큰 부분으로 나누어서 총 14개의 항목을 측정하였고 이들 체력요인 측정결과를 토대로 요인분석 방법을 적용하여 요인구조를 분석하였다. 이 결과 얻어진 곁론은 골프 선수들에게 있어서 높은 부하를 보이는 근력요인은 각근져 60˚ /sec Extension Right(8.69%), Extension Left(8.52%), Flexion Right(6.71%), flexion Left(6.43%)로 나타났다. 그 다음으로 비중을 차지하는 요인은 어깨60˚ /sec Adduction Right(4.98%), Adduction Left(4.58%), 트렁크 30˚ /sec Extension(4.04%), 완력 60˚ /sec Flexion Left(3.37%)의 순으로 나타났다. 이러한 여러 가지의 결과로 볼 때에 모든 운동종목의 기본이 되는 근력요인은 골프 경기에서도 클럽의 제어 및 비거리, 방향성 등과 직결되는 중요한 요인이므로 선수들의 운동프로그램 작성시 위에서의 높은 부하요인이 나온 부분을 우선순위로 근력 운동프로그램을 작성하면 보다 효율적인 경기력이 나을 것으로 사료된다. This study analyzed the factors of muscular strength among those of basic fitness, based on the 33 pro golfers considered as having the professional physical strength for the golf utilizing Cybex-6000, the uniform velocity equipment. At the time of analyzing the factors of muscular strength, after dividing a body into the upper limbs, middle body, and the lower limbs as the parts, the 14 items of each part were approximately measured, and the structure of factors was analyzed applying the method of factor analysis based on the result of muscular strength measurement. The result showed that the factor of proving high loading rate with the golfers was leg strength 60˚ /ser Extension Right (8.69%), Extension Left (8.52%), Flexion Right (6.71%), and flexion Left (6.43%). As the second loading rate-factor, the result showed shoulder 60˚ /sec Adduction Right (4,98%), Adduction Left (4.58%), trunk 30˚ /sec Extension (4.04%), arm strength 60˚ /sec Flexion Left (3.37%) in hierarchy. Regarding these results, the muscular strength factors which are the basic elements for every sports entry are the gave factors that affect the control of club, distance, vector. So when making excercise programs for athletes, if the programs make advantage of the result found in this study, more efficient contesting ability.

서울시 사회복지시설 근무 사회복지사들의 직무스트레스 수준

최수찬,김상아,이정은,박웅섭 大韓産業醫學會 2007 대한직업환경의학회지 Vol.19 No.4

목적: 사회복지사의 직무스트레스 실태를 알아보고,복지시설 유형과 직업조건에 따른 직무스트레스의 차이를 조사하고자 하였다. 방법: 서울시 소재 681개 사회복지시설에 근무 중인 사회복지사를 대상으로 우편설문을 시행하였으며 ,최종 분석 사용된 설문지는 총 432부였다. 한국인 직무스트레스 측정도구(KOSS)의 단축형을 사용하여 직무스트레스를 측정하였고,빈도분석,t-test,ANOVA 분석을 실시하였다. 결과: 노인복지시설의 경우 타 기관에 비해 직무요구,직무자율성결여,보상부적절로 인한 스트레스 수준이 모두 높게 나타났다. 작업조건별로는 업무형태,근무시간, 정규휴식시간,직위에 따라 직무스트레스 수준에 차이가 있었다. 서비스와 행정을 둘 다 수행하는 경우에 직무스트레스총점,직무요구,관계갈등,직무불안정,조직체계,보상부적절, 직장문화 영역의 직무스트레스 수준이 높았고,근무시간이 10시간 이상인 경우에 직무요구 영역에서 ,일선 및 선엄사회복지사가 직무자율성결여 및 보상부 적절로 인한 직무스트레스 수준이 높게 나타났다,또한 정규휴식시간 유무에 따라서는 직무스트레스 총점 및 직무스트레스의 7개 하위 영역 모두에서 유의한 차이가 있었다. 결론: 사회복지사의 직무스트레스를 적절한 관리하기 위해서는 서비스와 행정업무 병행에 대한 조치 및 정규휴식시간 확보가 필요하고,특히 노인복지시설 사회복지사의 직무스트레스에 대한 적절한 관리가 필요하다. Objectives: To investigate the level and variation of job stress according to social welfare organizations and work conditions among social workers in Seoul. Methods: For this survey, a self-reported questionnaire was administrated to 1,000 social workers working in organizations for social welfare practice in Seoul. A total of 432 completed questionnaires were received (43.2% response rate). Results: Social workers working in welfare organizations for the aged had higher job stress in the areas of job demand, insufficient job control and lack of reward than those in other welfare organizations. In addition, higher job stress was found in those in charge of both service and administrational work, without regular time for rest, working over 10 hours, in the frontline and senior grade. Conclusions: This study confirms the importance of guaranteeing regular time for breaks in the work schedule and of considering the service and administrational work ratio in job arrangement in order to alleviate stress of social workers.

陶淵明 田園詩의 美的體驗에 대하여

崔雄赫 대구효성 가톨릭대학교 1994 연구논문집 Vol.48 No.1

골프스윙에서의 운동역학적 변인비교 분석

최웅재 한국학교체육학회 2001 한국학교 체육학회지 Vol.11 No.1

The purpose of this study was to analyze and compare kinematic variables between the pc golfer and amateur golfer and suggest kinematic principle of golf swing. The next followings are the conclusion of this research. 1) You can tell pc golfer angles are opened than the amateur golfer at the impact. 2) The speed of pc golfer's swing, right before the impact was 45.84±3.3m/s, and for amateur golfer was 36.54±1.9m/s. You could tell that pro golfer's right before the impact was faster. 3) You could tell that pro golfer's hitting point are more center than the amateur golfer from the impact. 4) The back spin of the ball was more higher than amateur golfer, and the side spin was not happened. 5) Looking at out side target after impact, pro golfer was more accurate than golfer.

레이저 照射後 臼齒用 복합레진의 結合力에 關한 硏究

최웅진 全北大學校 齒醫學硏究所 1991 전북치대논문집 Vol.9 No.1

The purpose of this sutdy was investigating the bond strength between composite resin and enamel surface of the tooth. The enamels of sound primary molars and permanent premolars were used for experiment. They were extracted for orthodontic therapy or at physiologic exfoliation. They were classified into 10 groups at random ; 1 control group, 4 experimental groups were contained in self-curing resin and light-curing resin each. Laser impacts on each experimental groups were made at energy density of Q-switched Nd : YAG laser with 3.6J/m^2 and 10.8J/cm^2, Giant pulsed Nd : YAG laser 40J/cm^2 and Normal pulsed Nd : YAG laser with 40J/cm^2. Then the decalcified patterns of enamel by 36% phosphoric acid were investigated with scanning electron microscope add adhesive shear strength was measured on the each decalcified enamel surface after adhesion of light-curing and self-curing resin. All the decalcified enamel surfaces were classified into 3 groups and the hardness change after laser irradiation was examined. The obtained results were as follows. 1. There were not significant difference statistically between the light-curing resin groups in adhesive shear strength of primary molar(P>0.05), but significant increase in bonding force of self-curing resin groups as significant level α=0.05 in Q-switched Nd : YAG laser with 3.6J/cm^2, significant level α=0.01 in Normal pulsed Nd : YAG laser with 40J/cm^2. 2. There were not significant difference statistically between the light-curing resin groups in adhesive shear strength of permanent premolar, but significant increase in bonding force of self-curing resin groups as significant level α=0.05 in Q-switched Nd : YAG laser with 10.8J/cm^2 and Normal pulsed Nd : YAG laser with 40J/cm^2. 3. There were significant increase in bonding force of self-curing resin groups(α=0.01) in contrast to light curing resin groups when adhesive shear strength was examined with primary molar and permanent premolar. 4. In the hardness change after laser irradiation. primary molar was decreased significantly only in irradiation of Normal pulsed Nd : YAG laser as significant level α=0.01(P<0.01). In case of permanent premolar, significant decrease was seen statistically as significant level α=0.05 in Giant pulsed Nd : YAG laser irradiation and significant level α=0.01 in normal pulsed Nd : YAG laser irradiation(P<0.01).