텍스처를 고려한 다중 레인지 이미지의 3차원 형상 복원을 위한 정합

최가나(Ga-Na Choi),김창헌(Chang-Hun Kim) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.2Ⅱ

본 논문은 한 물체에 대해 스캔 위치 정보가 없는 여러 시점의 레인지 이미지들로부터 3차원 형상 복원을 위한 정합 알고리즘을 제안 한다. 기존의 정합 방법은 스캔 위치 정보와 기하학 정모를 이용하여 레인지 이미지들을 정렬 시킨 반면, 본 논문의 정합 방법은 스캔 위치와는 독립적으로 수행되며 기하학 정보와 텍스처 정보를 함께 이용하여 정렬 시킨다. 그러므로 텍스처가 있는 여러 장의 레인지 이미지들로부터 3 차원 형상을 보다 정확하고 효율적으로 복원할 수 있다.

인삼 복용 전후 체표온도의 변화에 관한 임상적 연구

최가야,조정훈,장준복,이경섭,Choi, Ga-Ya,Cho, Jung-Hun,Jang, Jun-Bock,Lee, Kyung-Sub 대한한방체열의학회 2003 대한한방체열의학회지 Vol.2 No.1

In Oriental medicine, Ginseng had been used for many diseases widely. It's main effects are suppling Qi and Promoting metastasis. The objective of this study is to examine the effect of Ginseng on control of body temperature. We conducted this study with 24 volunteers who had no problem in their health from November 2002 to January 2003. The body temperature were measured by DITI and thermometer before taking Ginseng and after 30minutes of the taking Ginseng extract 15g. We observed the difference of temperature among face chest and upper abdomen. All data were coded for computer analysis and significance were tested by Paired t-test and independent-t-test. According to our study, the axillary temperature show no signifiant change between two groups. The difference of temperature$({\Delta}T)$ between face and upper abdomen significantly increase after taking Ginseng extract(p<0.01). The difference of temperature$({\Delta}T)$ between face and chest significantly increase after taking Ginseng extract(p<0.05).

곡률 오차를 이용한 간략화 메쉬의 계층적 계산에 의한 다단계 메쉬 생성

김선정(Sun-Jeong Kim),최가나(Ga-Na Choi),정원기(Won-Ki Jeong),김창원(Chang-Hun Kim) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.1B

본 논문은 임의의 메쉬에 대해 곡률 오차를 이용하여 간략화된 기본 메쉬와 각 LOD 사이의 계층적 계산에 의한 보간 연산의 sequence로 다단계 메쉬를 구성하는 알고리즘을 제안한다. 곡률 오차를 이용한 간략화 알고리즘으로 계층적 계산에 적합한 도메인을 생성하고, 글로벌 에러 메트릭으로 곡률 오차를 사용하므로써 생성되는 다단계 메쉬가 주어진 간략화 오차 이내임을 보장하며, 계층적 계산으로 기존 다단계 메쉬의 분할 연결성의 제약 조건을 해결한다. 본 논문의 알고리즘으로 생성된 다단계 메쉬는 다면제 압축, 점진적인 전송, 다단계 편집 등에 활용될 수 있다.

성별에 따른 대학생 음주습관과 간 건강에 대한 인식도

양현서(Hyun-Seo Yang),최가인(Ga-In Choi),백경원(Kyung-Won Baek),이지혜(Ji-Hye Lee),김혜진(Hye-Jin Kim),이정화(Jung-Wha Lee),윤현서(Hyun-Seo Yoon),이민경(Min-Kyung Lee) 한국구강보건과학회 2017 한국구강보건과학회지 Vol.5 No.1

This study evaluated the drinking habits of college students and their perception regarding the liver health by gender. The target students attended colleges located in Busan area. The most common social perception of drinking was “Drinking alcoholic beverage is essential for making a good interpersonal relationship (3.49 points)”. “It is good for the man to know how to drink alcoholic beverage (3.49 points)” was the second and the third was “Alcoholic drink makes life more elegant and tasteful (3.01 points)”. Among 15 questions related to the knowledge on the liver health, respondents showed more than 90% correct answer rate only for three questions, which were “Drinking can cause esophageal cancer, liver cancer, cardiovascular diseases, and hepatocirrhosis (94.3%)’, ‘Drinking alcohol well does not mean that the person is healthy (93.3%)’, and ‘The incidence of cirrhosis is high when drinking alcohol for 15-20 years or more. (93.0%)’. The results indicated that the level of knowledge was not much different between genders. Therefore, it will be necessary to prepare education material to improve the behavior of the male since the male had more generous drinking perception and more frequent drinking binge frequency, although the level of knowledge was little different between genders.

한국 성인 비만여성의 체지방 분포와 월경 장애의 상관성 분석

정원석 ( Won Suk Chung ),최가야 ( Ga Ya Choi ),송미연 ( Mi Yeon Song ),신현대 ( Hyun Dai Shin ) 한방비만학회 2004 한방비만학회지 Vol.4 No.1

Background : Obesity is associated with menstrual disorder. Especially, upper-body obesity affects on female reproductive function. Objectives: The goals were to investigate relation between fat distribution and menstrual disorder in obese pre-menopausal Korean females. The hypothesis were tested that there is a relation between upper body obesity and menstrual disorder. Design : A cross-sectional evaluation of 66 Females (baseline age 32.15±7.32) with body mass index 31.22±4.05 kg/m2. Body composition was measured using bioimpedence analysis (BIA) and anthropometry was done by same observer. VAS and Multidimensional verval rating scale(MVRS) were checked for menstrual pain. Dual-Energy X-ray Absorptiometry (DXA) was measured for evaluating body fat distribution. Menstrual disorder and body fat distribution were compared using statistical methods. Results : TLFR and WH ratio was higher in menstrual cyclic disorder group than controls. There was negative relationship between VAS and TLFR. Conclusions : The data shows that disorder of menstrual cycle was associated with upper body obesity. WH ratio could be one of the factor of menstrual disorder. VAS was correlated with lower body obesity. Further studies for role of upper body fat distribution on female reproductive function and relationship between menstrual pain and fat distribution thought to be needed.

유기 및 관행농법 농경지의 무척추동물 생물다양성 비교

김훈 ( Kim Hoon ),서재휘 ( Seo Jae-hwi ),김교진 ( Kim Kyo-jin ),최가인 ( Choi Ga-in ),조영주 ( Jo Young-ju ),김태연 ( Kim Tae-yeon ),문명진 ( Moon Myung-jin ) 한국유기농업학회 2017 韓國有機農業學會誌 Vol.25 No.4

Although some skeptical views arguing that the impact of organic farming is quite limited to sustainable biodiversity, the organic agriculture has been generally accepted to have positive effects on various properties of soils not only on biophysical and ecological properties but also on biodiversity of the field. Therefore, this field investigation has been conducted to examine the effect of organic farming, relative to conventional agriculture, through a comparative investigations of the two systems for conserving local biodiversity of invertebrate animals. For this research, organic and conventional farming locations matched with both of a paddy field and a upland fields in Goesan-gun province (Chungcheongbuk-do, South Korea) were selected to compare the species richness of invertebrate biodiversity as follows: location OP (Organic Paddy field), location OU (Organic Upland field), location CP (Conventional Paddy field), and location CU (Conventional Upland field). Among 249 species collected, the numbers of species collected in the locations practicing organic farming were greater than the locations practicing conventional farming both in paddy fields (104 vs. 84 species) and upland fields (108 vs. 77 species). Changes in species richness can be shown in the selected locations depending on the agriculture system with organic (50 species) or conventional (44 species) farming systems in the paddy fields, similarly with organic (42 species) or conventional (35 species) farming in the upland fields, respectively. Our present research clearly shows that a wide range of taxa, including insects, spiders and other invertebrates, benefit from organic management through increases in abundance or species richness. It has been also identified that four orders (Hemiptera, Diptera, Hynemoptera, and Araneae) that are largely intrinsic to organic paddy field, and another three orders (Hemiptera, Coleoptera, and Araneae) that are particularly beneficial for organic crop field regime.

영상 탐지 기술을 이용한 건축물 크랙 검출에 관한 연구

김기웅(Kim, Ki-Woong),윤효운(Yun, Hyo-Woon),최가인(Choi, Ga-in),이시현(Lee Si-Hyeon),유무영(Yoo, Moo-Young) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.1

연구논문 : 여대생들의 건강행태가 피부건강에 미치는 영향

최가 ( Ga Choi ),이선희 ( Sun Hee Lee ),나영순 ( Young Soon Na ) 한국미용학회 2003 한국미용학회지 Vol.9 No.3

미용사의 조직몰입(직무만족)이 이직의사에 미치는 요인분석

최가(Choi Ga),나영순(Na Young-Soon) 한국인체미용예술학회 2003 한국인체미용예술학회지 Vol.4 No.2

  This study has the purpose of finding out significant variables in the devotion of hairdressers for work that is associated with their mindset to change job. The outcomes of this study may be used as basis to improve the efficiency of beauty industry and personal management of hairdressers. For the survey, questionnaires were distributed to and collected from 500 hairdressers registered at Jeonbuk Chapter of Korea Association for Hairdressers and employed at beauty parlors across the region from Sep. 20 to 27, 2001. The details and results of the survey are as follows:<BR>  First, the questionnaires, originally developed by Hong Jin Ha(1996) and partly modified to adapt to the work of hairdressers, were used as tool for survey. Cronbach"s α of the responses was set at 0.56 to 0.89, a level generally acceptable.<BR>  In order to explore the variables that affect hairdressers" devotion for work and their mindset to change job, analyses of dispersion, correlation and regression were made in such divisions as variables of organizational characters(loading and diversity of job, job conflicts, ambiguity of job, and chance for promotion), variables of organizational conflicts(vertical and horizontal variables of conflicts), and psychological variables (satisfaction of expectation) by making reference to the results of preceding studies.<BR>  Second, in the distribution chart for organizational characters and variables of organizational conflicts based on general characters of respondents, there is tendency that those who are younger than 24 years and single showed higher distribution pattern with statistical significance, while there is no significant correlation with psychological variables.<BR>  Third, in correlation between study variables and devotion for work, there is significant correlation in ambiguity of job and satisfaction of expectation with statistical significance (p<0.01). The higher one"s position is, the more statistically significant correlation he/she has with devotion for work(p<0.01). The same is applied to unmarried people.<BR>  With regard to correlation between study variables and mindset to change job, there is positive(+) correlation in loading and diversity of job, job conflicts, ambiguity of job, chance for promotion, vertical and horizontal conflicts and satisfaction of expectation, while there is statistically significant negative(-) correlation with devotion for work(p<0.01). Males and those who are younger than 24 years showed statistically significant correlation(P<0.05). The lower one"s position and payment is, the stronger his/her intention to change job becomes with statistical significance(p<0.01)<BR>  Fourth, it was revealed from the regression analysis that gender, age, position, length of service, career in beauty industry, nuptial status, loading and variety of job, ambiguity of job and satisfaction of expectation have exercised significant influences on the devotion for work. On the other hand, the mindset of hairdressers was greatly influenced by age, position, loading and variety of job, job conflicts, ambiguity of job, chance for promotion, satisfaction of expectation, and devotion for work.<BR>  The results of this study lead us to a conclusion that the managers of hair parlors should devote themselves to conduct systematic training and education and establish job limitation for hairdressers so that they might have incentives to attach to their jobs and find satisfaction in their workplace, thus increasing their morale and productivity as well.

음주ㆍ흡연습관이 피부건강, 화장습관에 미치는 영향

이선희(Sun-Hee Lee),최가(Ga Choi),나영순(Young-Soon Na) 한국생활과학회 2004 한국생활과학회지 Vol.13 No.2