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한방 병원에 경추 통증으로 내원한 환자들의 흉추부 만곡 및 경추부 추간판탈출증의 상관 관계에 관한 보고
최영준,유수빈,문병헌,정재현,윤영웅,김길환,남항우,이차로,Choi, Young-Jun,Yoo, Su-Bin,Moon, Byung-Heon,Chung, Jai-Hyeon,Yun, Yeong-Ung,Kim, Kil-Hwan,Nam, Hang-Woo,Lee, Cha-Ro 척추신경추나의학회 2015 척추신경추나의학회지 Vol.10 No.1
Objectives : This study is planned to classify correlation between thoracic kyphosis angle and prevalence of cervical intervertebral disc. Methods : We Measured the thoracic kyphosis angel of the 110 men and 179 women patients with neck pain in 00 Korean Medicine Hospital. We use Cobb's angle method and Thoracic cage dimension method for measuring the thoracic kyphosis. And We use Magentic Resonance Imaging(MRI) for classifying the patient who has cervical intervertebral disc or not. Results : 1. There was statistical difference on the thoracic cage dimension with gender(P<0.001), while there was no statistical difference on Cobb's angle with gender(P=0.882). 2. Age and thoracic cage dimension(r=0.383) is statistically more correlative than age and cobb's angle(r=-0.59). Conclusions : 1. Thoracic cage dimension and gender, Thoracic cage dimension and age were statistically concerned on patient who has neck pain, while Cobb's angle had no statistical correlation with age and gender. 2. There was no statistical difference on the Cobb's angle and Thoracic cage Dimension between patient who has one or more cervical disc herniation(Protrusion disc, Extrusion disc) segment and patient who didn't have cervical disc herniation(Protrusion disc, Extrusion disc) segment.
장골 이식을 동반한 임플란트 수술 후의 합병증; 증례보고
최영준,최원철,Choi, Young-Jun,Choi, Won-Cheul 대한악안면성형재건외과학회 2007 Maxillofacial Plastic Reconstructive Surgery Vol.29 No.4
In a one-stage approach, where the implant installation is performed simultaneously with the iliac bone graft, various complications are observed. The observed complications are as follows; severe bone resorption at the maxillary anterior region and the area adjacent to the nasal cavity, shortage of soft tissue to cover the augmented alveolar bone, difficulties with oral hygiene care caused by the diminished vestibular space and non-esthetic prosthesis. These are good reasons for choosing the two-stage approach over the one-stage approach in spite of all the advantages it has, and should be taken into careful consideration when diagnosing and planning treatment using the one-stage approach.
수동형 전개힌지를 이용한 전개형 우주 구조물의 전개 동특성 해석
최영준,오현웅,최용훈,이경주,Choi, Young-Jun,Oh, Hyun-Ung,Choi, Yong-Hoon,Lee, Kyung-Joo 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.3
The deployable space structure is necessary to minimize the satellite volume and launch cost. For the deployment, passive deployment mechanism has widely been used to attenuate a latch shock induced when the structure is just fully deployed. To reduce the latch shock, viscous damper is applied to the passive deployment mechanism and it can control the deployment speed of the structure. In this paper, dynamic analysis of the deployable space structure using the passive deployment mechanism with the viscous damper has been performed. The viscous damping values have been optimized through numerical simulation. The satellite's attitude influenced by pyro activation for the release of the structure has also been investigated.
경륜 선수의 기술등급별 신체구성 및 슬관절 근기능 비교
최영준(Young Jun Choi),김정태(Jung Tae Kim),박성현(Sung Hyun Park) 한국사회체육학회 2008 한국사회체육학회지 Vol.0 No.34
In order to determine differences in cycle racer`s body composition and muscular functions of the knee joints according th their experience in cycle race, the present study measured body composition (body fat percentage, muscle mass), the muscular functions of knee joints (maximum torque, maximum torque per unit weight, total workload, ipsilateral balance ratio and bilateral balance ratio) for 6 first-class racers, 6 second-class ones and 7 third-class ones, so a total of 19 cycle racers, and drew conclusions as follows. First, there was no difference in the cycle racer`s body fat percentage and muscle mass according to their class (p>.05). Second, Left ipsilateral balance ratio was significantly higher in the first-class racers than in the second-class and third-class ones (p<.05), but the maximum torque of left/right extensor muscle and flexor muscle, maximum torque per unit weight, total workload, bilateral balance ratio, and right ipsilateral balance ratio wer not significantly different among the three groups (p>.05).
최영준 ( Young Jun Choi ),박현용 ( Hyun Yong Park ) 한국환경경제학회·한국자원경제학회(구 한국환경경제학회) 2015 자원·환경경제연구 Vol.24 No.2
본 연구는 기후변화가 국가의 총요소생산성에 미치는 영향을 분석하였다. 구체적으로 대표적 기후변수인 기온와 강수량이 국가의 총요소생산성에 미치는 영향을 분석하였다. 기존 연구와는 달리 본 연구는 최근 기후변화의 패턴인 기후 변동성이 높아지는 현상을 고려하기 위해 기후변수들의 평균값뿐만 아니라 최고값을 고려하여 분석하였다. 선형회귀분석 결과 평균기온의 상승은 생산성에 부정적 영향을 미치는 것으로 나타났으나 강수량의 평균적 증가는 긍정적 영향을 미치는 것으로 분석되었다. 하지만 최대 강수량은 평균 강수량과는 달리 총요소생산성을 증가시키는 것으로 분석되었다. 이러한 결과는 기존의 연구와 부합하는 것으로 나타났다. 하지만 패널자료를 분석한 결과 평균기온 이외에 다른 기후변수들(평균 강수량, 최대기온, 최대 강수량)은 유의미하게 영향을 주지 않는 것으로 나타났다. 또한 평균기온의 상승은 총요소생산 성을 증가시키는 것으로 분석되었다. 이는 본 연구가 장기시계열 자료를 이용하여 국가들의 기 후변화 적응능력에 의해 영향을 받은 것으로 분석된다. This study is to analyze the effects of climate change on national total factor productivity. Changes in temperature and rainfalls which are the representative climate variables are used as main factors to measure climate change. Not only average values of the variables but those highest values are used as independent variables in the model, in order to consider the characteristic pattern of recent climate change, the high volatilities. The OLS results are corresponding to previous literature that average temperature has a negative relationship with productivities while average rainfalls have a positive relationship. However, the results of panel analysis contradict the argument of the negative relationship between average temperature and productivities since human beings can adapt the climate change. Therefore adaptation capacity is important to forecast the effects of climate changes on economies.
콘크리트용 혼합골재 표준화를 위한 실태 조사에 관한 연구
최영준(Choi Young Jun),조영근(Cho Young Gun),문규돈(Moon Gyu Don),최영철(Choi Young Chul) 표준인증안전학회 2012 표준인증안전학회지 Vol.2 No.1
Recently, ready-mixed concrete companies are using disqualified aggregates which lack in both grade and grain shape due to the shortage of natural aggregate. However, still there aren t any clear and accurate blending method and quality standard existing. In this paper, we surveyed ready-mix concrete companies about the quality level and blending of aggregates in order to standardize the blended aggregates on concrete. Survey results indicated that blending of aggregates is common for the aim of quality improvement, and usually grade and grain shape were the main cause of the blending. To sum up the ready-mixed concrete companies view point, once the blended aggregate s quality standard is set, the supply shortage and quality problem of aggregates can be solved.
최영준 ( Young Jun Choi ),박현용 ( Hyun Yong Park ) 한국환경경제학회·한국자원경제학회(구 한국환경경제학회) 2016 자원·환경경제연구 Vol.25 No.2
본 연구는 기후변수들의 변동 특성이 한국 제조업의 총요소생산성에 미치는 영향을 분석하였다. 대표적인 기후변수인 기온, 강수량, 습도는 노동효율성에 부정적인 영향을 미칠 것으로 예상되므로 기온, 강수량, 습도의 변동특성이 한국 광역자치단체 제조업 총생산성에 미치는 영향을 분석하였다. 본 연구는 최근 기후변화로 기후 변동성이 높아지는 현상을 고려하기 위해 기후변수들의 평균값뿐만 아니라 최고값을 고려하여 분석하였다. 선형회귀분석 결과 선행연구결과와 달리 기온과 습도가 제조업 생산성에 유의미한 영향을 미치지 않았다. 강수량의 평균적증가는 부정적 영향을 미치는 것으로 분석되었다. 패널자료를 분석한 결과에서는 기온, 강수량 모두 제조업 총생산에 유의미한 영향을 주지 않는 것으로 나타났다. 반면 평균 습도의 상승은 제조업 총생산을 증가시키는 것으로 나타났다. 실내 작업이 많은 제조업의 경우 기후자체의 변화보다도 기업체들의 적응능력이 생산성 변화와 직접적인 관련이 있다. 한국 제조업의 경우 기온이나 습도의 변화가 급격하게 이루어지지 않고 있고, 냉난방 시스템 구축 등을 통해 기후변화에 잘 적응하고 있는 것으로 분석된다. This study is to analyze the effects of changing pattern of climate vaariables on total factor productivity of Korea manufacture industry. Changes in temperature, rainfalls and humidity which are the representative climate variables are used as main factors. Not only average values of the variables but those highest values are used as independent variables in the model, in order to consider the characteristic pattern of recent climate change, the high volatilities. The OLS results are unlike to previous literature that temperature and humidity had no significant impact on manufacturing productivity. An increase in the amount of precipitation was analyzed that impact negatively impacted. The analysis of panel data showed that temperatures and precipitation all that does not significantly affect the manufacturing. While the increase of the average humidity is shown to increase the total productivity of manufacture industry. In Korea, adaptation capability is important in determining the effects of climate change on productivity of manufacture industry.