신포괄수가 시범사업 모형 개선 이후의 지불정확도 변화

최정규,김선희,신동교,강중구,Choi, Jung-Kyu,Kim, Seon-Hee,Shin, Dong-Gyo,Kang, Jung-Gu 한국보건행정학회 2017 보건행정학회지 Vol.27 No.3

Background: Korea set up new diagnosis related group (DRG) as demonstration project in 2009. The new DRG was reformed in 2016. The main purpose of study is to identify the effect of reform on accuracy of payment. Methods: This study collected inpatient data from a hospital which contains medical information and cost from 2015 to 2016. The dependent variables were accuracy of total, bundled, unbundled payment, and payment for procedures. To analyze the effect of reform, this study conducted a multi-variate regression analysis adjusting for confounding variables. Results: The accuracy of payment increased after policy reform. The accuracy of total, bundled, unbundled payment, and payment for procedures significantly increased 3.90%, 2.92%, 9.03%, and 14.57% after policy reform, respectively. The accuracy of unbundled payment showed the largest increase among dependent variables. Conclusion: The results of study imply that policy reform enhanced the accuracy of payment. The government needs to monitor side effects such as increase of non-covered services. Also, leads to a considerable improvement in the value of cost unit accounting as a strategic play a role in development of DRG.

영구자석 스프링과 보이스 코일 구동기를 가진 직선형 진동모터의 설계 및 해석

최정규,유승열,노명규,Choi, Jung-Kyu,Yoo, Seong-Yeol,Noh, Myounggyu 대한기계학회 2013 대한기계학회논문집 Vol.37 No.3

직선형 진동모터가 휴대전화의 알림용이나 햅틱 인터페이스의 구동기로 적용되려면 빠른 응답속도와 긴 수명을 제공하여야 한다. 본 논문에서는 기존 직선형 진동모터를 개선하여 보이스 코일 구동기와 영구자석 스프링을 이용한 직선형 진동모터를 제시하고, 설계 제작하여 그 가능성을 검증하였다. Halbach 배열의 영구자석에 의해 구동되는 보이스 코일 구동기와 영구자석 간의 반발력을 이용하는 영구자석 스프링을 해석하고 설계하기 위해, 등가전류판 방법과 이미지 방법을 사용하였고, 방법의 적절성을 유한요소해석을 통해 검증하였다. 시작품 모터를 설계하고 제작하고, 실험을 통해 진동모터의 특성을 확인하였다. In order to use a linear vibration motor for the actuator of a haptic interface, the motor must provide a higher reaction rate and longer service life than typical rotational motors with an eccentric mass. In this paper, we propose a linear vibration motor that is equipped with a voice-coil actuator and permanent-magnet springs. To concentrate the magnetic flux in the actuator, a Halbach-style magnetization pattern is used. Permanent-magnet springs replace mechanical springs to help increase the service life. We use the method of equivalent current sheets and the method of images to analyze and model the proposed vibration motor. These methods are validated using finite element analyses and experiments. A prototype motor is designed and fabricated. Tests with the prototype show the feasibility of the proposed linear vibration motor.

가정호스피스·완화의료 제도 도입을 위한 국민 인식도 조사

최정규,태윤희,최영순,Choi, Jung-Kyu,Tae, Yoon-Hee,Choi, Young-Soon 한국호스피스완화의료학회 2015 한국호스피스.완화의료학회지 Vol.18 No.3

Purpose: This study was conducted to understand public perception of home-based hospice and identify related factors. Methods: Between August 19, 2014 and August 30, 2014, data were collected using an E-mail questionnaire that was filled by 1,500 adults who were over 20 years of age. Data were analyzed using descriptive statistics, ${\chi}^2$-test and logistic regression. Results: Among the respondents, 15.9% were aware of home-based hospice care, and 61.3% were willing to receive home-based hospice care. The factors that influenced the participants' willingness to use home-based hospice services included residential district, religion and private health insurance. Respondents who lived in Seoul (OR: 1.56, 95% CI: 1.04~2.33), Gwangju/Jeolla province (OR: 2.02, 95% CI: 1.23~3.32), Busan/Ulsan/South Gyeongsang province (OR: 1.81, 95% CI: 1.17~2.82) were more well-aware of home-based hospice care than those who lived in Incheon/Gyeonggi province. The faithful were more informed about the services than those without non-faithful participants (Roman Catholics (OR: 2.03, 95% CI: 1.30~3.17), Protestants (OR: 1.76, 95% CI: 1.22~2.53). Participants who had a private health insurance plan knew more about the services than those without one (OR: 1.45, 95% CI: 1.03~2.04). Conclusion: First, it is necessary to improve perception of the public and healthcare providers regarding home-based hospice care. The government should review a measure to institutionalize operation of a palliative care team at hospitals and community home-based hospice care centers.

휠체어 볼링 투구 동작의 운동학적 특성분석

최정규(Choi, Jung-Kyu) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.1

The purpose of this study is to provide basic data for improving the performance of wheelchair bowlers through the kinematical analysis of wheelchair bowling. The following conclusions were obtained based on the results of this study. First, the total time showed 0.90 s, with the longest time in the backswing interval. Second, the COM almost did not change in all X, Y, Z axis. Third, the resultant velocity of the ball during the release showed an average of 4.96 m / s. Fourth, the upper arm and torso were apart by an average 50.7° during the release; and the inner and outer upper arm rotation angle was an average of -78.84° at the top of the backswing. Fifth, the angle of elbow was flexed after the top of backswing; the angle of the wrist flexed after push away. Sixth, the body was bent forward most during the release; the rotation of the shoulder was the most at the backswing top in the clockwise direction. Seventh, for the tilt angle of the shoulder, the tilted shoulder went up again from the address to the backswing top, tilted again during the release after the backswing top, and went up again during the follow-through. Wheelchair Bowling for the future on the basis of this study, suggestions need more study and research for the development of a dedicated wheelchair, wheelchair bowling performance enhancement w ill be made.

드롭 착지 후 이동 시 거리와 속도에 따른 운동역학적 분석

최정규(Choi, Jung-Kyu) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.6

The purpose of this study was kinetical analysis of drop landing in accordance with the moving velocity and distance when moving was identified. And the following conclusions were drawn. First, P3 was shown a statistically significant difference, the total time also showed no significant difference. Second, CM(center of mass) of the horizontal displacement showed a significant difference between the E3 and E4, the vertical displacement is found a significant difference in E4 of the CM. Third, the horizontal velocity of the CM showed an Event 2, Event 3, significant differences in event 4, the vertical speed of the CM did not show any significant differences. Fourth, hip joints, knee joints, ankle joints, of the trunk tilt angle showed a significant difference in E4. Fifth, the landing phase the hip joint, knee joint, ankle joint, the tilt range of motion did not show statistically significant differences. But the jump phase of the hip joint, knee joint, ankle joint showed significant differences in range of motion. Sixth, Fy(Horizontal force) of GRF(Ground reaction force) showed significant differences in E2 and E3. Seventh, Lower body joints of the Eccentric work showed significant differences in the knee joint and ankle joint. But the moment and Contribution tototal work did not show any significant difference.

국내 설계기준을 적용한 송전철탑 내풍 구조해석

최정규 ( Choi Jung Kyu ),김성도 ( Kim Sung Do ),전오현 ( Jeon Oh Hyeon ),정우영 ( Jung Wooyoung ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표회 논문집 Vol.21 No.2

It is necessary to develop the damage function to cope with the increasing damage of steel transmission towers. A simplify analysis to evaluate the performance resistance capacity, which is essential for the development of the damage function, was performed. The 154kv power transmission towers installed between Sokcho and Yangyang were selected as the target structures. Wind loads were calculated and applied to the target structures according to the domestic transmission and distribution facility design standards. As a result of this study, displacement according to wind speed of the target structure was derived.

시각차단에 따른 제자리멀리뛰기 동작의 운동역학적 분석

최정규(Choi, Jung-Kyu) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.5

The purpose of this study was to provide basic data for the athletic learning for the visually disabled through a comparative study of the kinetics factors involved in standing long jump performed in normal vision, immediately after visual blockage, and 30 minutes after visual blockage, respectively, taking as subjects seven adolescents whose average age is 12.3±1.12 years, and it has come up with the following conclusion. Following the shift from normal vision to immediately after visual blockage and 30 minutes after visual blockage, gradual shortening is registered in preparatory duration time and jump length, and in take-off and landing, the center of mass gets higher and forward movement is not properly done. Also, following the shift from normal vision to immediately after visual blockage, landing motion appears unstable with the angle of each joint getting wider, while 30 minutes after visual blockage, even more unstable positioning is seen with the angle of each joint getting even wider. At take-off, GRF(ground reaction force) shows the greatest propulsion, which has turned out weakening bit by bit immediately after visual blockage and the 30 minutes after visual blockage, with the force dispersing sideways to left and right.

드롭랜딩 시 일반적 착지와 착지 후 이동 동작의 운동역학적 비교분석

최정규(Choi, Jung-Kyu) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.5

The purpose of this study was to provide the basic to prevent the injuries through the kinetic comparison analysis about of normal landing and intentional safety landing movement. 10 healthy male university students were selected for target subjects. Study subjects executed the landing movement(normal landing) from 40 cm high jump stand without prior explanation. After they were explained about the safety landing, they executed intentional landing movement considering the safety. Study results are as follows. First, intentional safety landing showed longer time than normal landing. Second, intentional safety landing was identified to make flexion angles ranges of ankle joint, knee joint and hip joint bigger than normal landing. Third, intentional safety landing was identified to increase the Angular velocity of ankle joint, knee joint and hip joint at intentional landing than normal landing. Fourth, intentional safety landing was identified to surely reduce the brake power and impact power and to be helpful to prevent injury than normal landing. Fifth, landing strategies at intentional safety landing were to use knee and hip joint more than normal landing and the final finish of landing movement was to use hip joint. Sixth, workload rate of ankle was most identified at normal landing and workload rate of knee was most identified at intentional safety landing. These results showed they land using ankle more at normal landing and using knee more at intentional safety landing.

드롭랜딩 동작 시 일반적 착지와 안전을 위한 의도적 착지의 운동역학적 비교분석

최정규(Choi, Jung-Kyu) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.1

The purpose of this study was to provide the basic to prevent the injuries through the kinetic comparison analysis about of normal landing and intentional safety landing movement. 10 healthy male university students were selected for target subjects. Study subjects executed the landing movement (normal landing) from 40 ㎝ high jump stand without prior explanation. After they were explained about the safety landing, they executed intentional landing movement considering the safety. Study results are as follows. First, intentional safety landing showed longer time than normal landing. Second, intentional safety landing was identified to make flexion angles ranges of ankle joint, knee joint and hip joint bigger than normal landing. Third, intentional safety landing was identified to increase the Angular velocity of ankle joint, knee joint and hip joint at intentional landing than normal landing. Fourth, intentional safety landing was identified to surely reduce the brake power and impact power and to be helpful to prevent injury than normal landing. Fifth, landing strategies at intentional safety landing were to use knee and hip joint more than normal landing and the final finish of landing movement was to use hip joint. Sixth, workload rate of ankle was most identified at normal landing and workload rate of knee was most identified at intentional safety landing. These results showed they land using ankle more at normal landing and using knee more at intentional safety landing.

시각차단에 따른 던지기 동작의 운동학적 분석

최정규(Choi, Jung-Kyu) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.5

The purpose this study was to investigate how the loss of visual sensory for a short time can influence the kinematic factors through the kinematic analysis of the ball throwing motion, and with providing a basic data of exercise learning method for visually impaired and for those who may lose the vision in the future. The subjects have performed the throwing motion with a normal vision and 30 minutes after the visual blockage and the image shooting was taken using 9 high-speed cameras. At this time, the recording speed was 100 frames/s with the shutter speed of 1/500s and for the kinematic analysis, Kwon3d XP program was used. The conclusions drawn from this study are as follows. 1. During the throwing motion according to visual blockage, the duration time has not shown a significant differences between the two groups, but in the average value, a normal vision along with P1 has shown a little longer duration time and in P2, it has shown a little longer duration time when the vision was blockage. 2. The angle variables have shown a significant differences only in the knee joint angle, but in the average value of right shoulder, elbow, wrist joint angle and the hip of the left leg, knee, angle of ankle joint and twist angle, a normal vision has shown a bigger range of joint motion than when the blockage vision. 3. The hand velocity during the release, the center of mass velocity (Y axis, Z axis) and the angular velocity of the elbow have shown a significant differences. 4. The movement range of the left leg and the center of mass have only shown a significant differences in P1 of Y axis, but when comparing with the average value, it was shown to have moved significantly during a normal vision.