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이옥규,심재영 한국방송·미디어공학회 2021 방송과 미디어 Vol.26 No.2
LiDAR는 조사된 빛이 피사체에 반사되어 돌아오는 시간을 측정하여 거리를 측정하는 장비로서, 넓은 영역과 긴 거리에 걸쳐 실세계의 정밀한 3차원 정보를 포인트 클라우드 데이터로 제공해 준다. 이러한 대용량 포인트 클라우드 데이터는 자율주행 자동차, 로봇, 3차원 지도 제작 등 컴퓨터 비전 기술을 이용하는 다양한 분야에 널리 활용될 수 있다. 그러나 유리 구조물을 포함하는 피사체를 LiDAR로 촬영하는 경우, 유리면에서 빛의 반사로 인한 가상의 포인트가 생성되어 실제 3차원 정보를 왜곡하는 문제가 있다. 포인트 클라우드의 후속 처리를 효율적으로 수행하기 위하여, 이러한 왜곡을 제거하는 전처리 기술이 필요하다. 본고에서는 LiDAR의 취득 원리와 3차원 포인트 클라우드의 특성을 고찰하고, 유리 반사로 인한 왜곡된 가상의 포인트를 자동으로 검출하고 제거하는 새로운 연구 주제를 소개한다.
이옥규,허양임,강재헌,박현아,김경우,조영규,최원영,박혜숙,이혜아 대한가정의학회 2013 Korean Journal of Family Medicine Vol.34 No.5
Background: With metabolic syndrome (MS) being a major risk factor for cardiovascular disease, and central obesity being a major predisposing factor for MS, intensive research is currently being performed on cutoff values according to race and sex. Menopause is an especially significant factor in designating cutoff values for female central obesity, as menopause brings sudden bodily changes that induce central obesity and increased prevalence of MS. Therefore this study aimed to investigate the cutoff values for the obesity index and its validity in predicting the criteria for MS in Korean women according to menstrual status. Methods: The study focused on 3,103 women 20 years of age or older participating in the 2007 Korea National Health and Nutrition Examination Survey. Definitions of non-adipose components of MS were defined by the International Diabetes Federation, and menstrual status was judged on the basis of survey results. The sensitivity, specificity, and positive and negative predictive values of the central obesity index (body mass index [BMI], waist circumference [WC], waist-to-height ratio [WHtR])according to menstrual status for two or more non-adipose components of MS were calculated based on the Youden index. Results: Area under the curve (AUC) values predicting the presence of two or more metabolic risk factors were higher in premenopausal women, with AUC values for BMI, WC, and WHtR being, in pre- and post-menopausal women, 23.1 kg/m2 vs. 23.9 kg/m2, 76.1 cm vs. 82.5 cm, and 0.49 vs. 0.53, respectively. The WC cut off (76 cm) for pre-menopausal women was found to be more sensitive and more effective at screening for MS risks than the cutoff value given by the Korea Society for the Study of Obesity. Conclusion: The central obesity index showed better predictability for MS risk in pre-menopausal women. Because the central obesity index cutoff values are lower in pre-menopausal women, the possibility of metabolic risk can be considered for premenopausal women with WC lower than 85 cm. Assessment and control of other risks are needed accordingly for preventing the development of MS.
Vidal Sassoon, Toni & Guy, Zone & Section 중심으로 해외브랜드별 헤어 커트 도해도에 따른 Bob Style의 비교분석
이옥규 한국피부과학연구원 2014 대한피부미용학회지 Vol.12 No.5
In this study, examined the characteristics of each brand cut, Vidal Sassoon, Toni & Guy and Zone & Section which has been educational curriculum and academy since 40years, through the hair cutting diagram of Bob Style, the most popular and trendy style of beauty education from the 1910’s to the present, at all ages has been preferred and reinterpreted, so that it can be applied to a style suited to the tastes of Korean. As a result, Vidal Sassoon has understated texture processing techniques, pivoting, section of vertical direction and blent hair cut line, which has the most intense and heavy Bob Style. Toni & Guy has enough texture processing techniques, pivoting, section of diagonal and blent hair cut line, which has soft and natural Bob Style. Zone & Section has section of pivoting & vertical direction, point haircut line, which has most light and soft Bob Style due to has most texture processing techniques. It is shown when you uses the texture of the hair and the techniques of each brand, according to customers needs, which is indicated that Bob Style will be suited to the tastes of customers & Korean.
6주간의 코어운동프로그램이 대학 사격선수들의 견관절 기능, 척추정렬 및 균형능력에 미치는 영향
이옥규 ( Ok Kyu Lee ),장갑석 ( Kap Seok Jang ),조인호 ( In Ho Cho ) 한국체육대학교 체육과학연구소 2014 스포츠사이언스 Vol.31 No.2
본 연구는 사격선수들에게 있어서 코어운동프로그램을 통한 견관절 기능, 척추정렬 및 균형능력의 변화를 분석하여 상해 예방과 경기력 향상을 위한 보강 운동프로그램으로써 코어운동프로그램의 효과를 알아보기 위해 시행되었다· 본 연구를 통해 코어운동프로그램이 사격선수들의 견관절 가동범위와 등속성 근기능(신근 60°, 180°/굴근 180°, 240°), 흉추 후만만곡에서 통계적으로 유의하였으나, 견관절 고유수용감각과 균형능력에서는 통계적 유의함이 검증되지 못했다· 따라서 본 연구에서 밝혀진 결과들은 사격선수들의 보강운동프로그램으로 일반화시키기에는 제한이 있기 때문에 사례수와 운동기간 등의 내용을 보강한 사후연구가 필요할 것으로 생각된다· This study was performed to identify body core training on the ROM, proprioception, muscle strength of shoulder, spinal alignment, balance in collegiate pistol shooters · through body core training program for 6weeks· There was no significant difference in Shoulder joint Extensor ROM, but Flexor ROM was increased significantly after treatment· Proprioception, is associated with shoulder instability, and shouldeer Extensor/Flexor strength was improved significantly (60°/sec, 180°/sec) after core training program· Also, Lateral deviation, Kyphotic angle and Lordotic angle were improved through core training program· Balance and shooting performance also improved after through body alignment and core training program·
염색 시술 모발의 자외선 차단제 처리 시 손상도와 색상 변화
이옥규 ( Ok-kyu Lee ),권수애 ( Soo-ae Kweon ),라채숙 ( Chae-suk La ) 대한미용학회(구 대한미용과학회) 2016 대한미용학회지 Vol.12 No.4
This study was carried out to evaluate the protective effects of sunscreen treatment to dyed hair against ultraviolet B (UVB) irradiation. Emulsion-type (E) or mist-type (M) sunscreen was applied to dyed hair (DH) and bleached & dyed hair (B/ DH), before irradiation with UVB. Then, changes in physical property and color of hair were measured. In the M hair group, B/DH was lower than DH in tensile strength. In both E and M groups, B/DH was lower than DH in elongation rate and frictional force. In damage rate, B/DH was greater than DH. In scanning electron microscopic images of hair cuticle surface, the cuticle in E hair was more stable than M hair and scale damage in M hair was greater than E hair. In L*, a* and b*, B/DH was greater than DH in both E and M groups. In ΔE, DH was greater than B/DH in both groups. These results indicated that as the duration of UV irradiation increased, tensile strength, elongation rate and frictional force declined while damage rate increased, causing discoloration regardless of the type of sunscreen. To reduce physical damage of dyed hair, E-type sunscreen should be used. However, to best maintain hair color, it is preferable to use M-type sunscreen.