• Journal of the KSME
• /
• v.44 no.1
• /
• pp.79-85
• /
• 2004

이 글에서는 인간 자세 제어에 대해 설명을 하고 나이가 들면서 자세 제어 기능에 어떠한 변화가 오는가와 인간 자세 제어에 관한 모델에 대해 설명을 한다.

• Journal of Korea Society of Industrial Information Systems
• /
• v.19 no.5
• /
• pp.25-31
• /
• 2014

Bioelectrical Impedance Analysis(BIA) is a widely used method for estimating body composition changes which is a non-invasive, inexpensive, safety and reproductive method. We studied the bioimpedance change and the distinction of blood pressure according to body posture and conducted three kinds of experiments: the real-time bioimpedance measurement, the simulation using equivalent circuit model and the blood pressure measurement. Bioimpedance is measured during 4 minutes at the multi-frequency(1 kHz, 10 kHz, 20 kHz, 50 kHz, 70 kHz, 100 kHz). From the experiment results, the changes in body postures result in changes of resistance and reactance, with an average rapid increase of body impedance when going from standing, sitting to supine. Specially, the laying resistance on average was 16.49% higher than supine resistance at 50 kHz and the laying reactance measurement was also 26.05% higher than sitting reactance at 1 kHz. Blood pressure in standing posture was higher than those in other postures both in maximum($125.14{\pm}12.30$) and in minimum($75.57{\pm}10.31$). The results of BIA and blood pressure in this study will be contributed to the research on acute illness, extreme fat, and body shape abnormalities.

• The Journal of the Convergence on Culture Technology
• /
• v.1 no.2
• /
• pp.91-95
• /
• 2015

The purpose of this study was to evaluate the difference voice production, according to the pelvic inclination while in the sitting position. Measure the sound produced(pitch) in three positions with the Praat program. position: anterior tilt position, posterior tilt position, neutral position(seat surface tilted 15 degrees). We found that the mean values of pitch were statistically significant different according to three types of sitting positions (p<0.05). The following result was observed: anterior tilt position > posterior tilt position > neutral position. There was significant difference in the neutral position. This finding suggests that the seat surface inclinations have an effect on speech production. Especially, neutral position may be an effective posture that may help increases the speech production.

• Journal of the Korea Convergence Society
• /
• v.11 no.5
• /
• pp.81-86
• /
• 2020

The Purpose of this study is analysis characteristic of grasping power with each different shoulder horizontal angle. Twenty female university students with no shoulder dysfuction participated subject in three different positions of shoulder horizontal flexion with standing posture, shoulder 0° flexion, elbow 90° flexion, forearm 90° pronation, different positions is followed : shoulder 0° horizontal adduction shoulder 40° horizontal adduction, shoulder 40° horizontal abduction. The One-way repeated ANOVA test was used to determine the different in grip strength on three shoulder horizontal positions. On the average, in the hand grip strength, the horizontal neutral position is higher than horizontal adduction position with significant value. In particular, shoulder horizontal aduction was measured lowest grip strength between three positions.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.27 no.4
• /
• pp.538-549
• /
• 2021

In this study, a trim tab on the stern hull of a small high-speed vessel of approximately 10 m length sailing at a Froude number of 1.0 was designed for energy efficiency. The running attitude and resistance performance of the bare hull and trim tab hull at several angles to the base line were analyzed for model and full scale ships using computational fluid dynamics, and compared to investigate the scale effect. The analysis results for the bare hull were quite similar, but a difference in the attitude control under same conditions of the trim tab was observed, resulting in the total resistance error. However, there was no significant difference in tendency of the variation in the resistance with the attitude. Thus, the optimum running attitude could be determined from the tendency despite the scale effect, but a full scale analysis is required to analyze the control of the attitude by the trim tab and flow characteristics near the full scale ship.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.14 no.5
• /
• pp.131-135
• /
• 2014

The purpose of this study was to show the detection of the head movement within relatively the posture function. An analysis of the posture function was inquired a displacement that the ranges of stance direction showed generally a variation across all condition through the head movement. CNS condition (C_RL-MIN-AVG) was verified slightly greater variation at $0.226{\pm}0.04$ units. Somatosensory condition (So_$RL-_{MIN-AVG}$) was verified slightly greater variation at $0.939{\pm}0.46$ units. Vestibular condition (Ve_$RL-_{MIN-AVG}$) was verified slightly greater variation at $4.009{\pm}1.05$ units. Vision condition (Vi_$RL-_{MIN-AVG}$) was verified greater variation at $8.336{\pm}4.05$ units. When the movement head of vision characteristic function was presented a diminutive variance. On the CNS characteristic condition of the movement head function was presented a diminutive variance.

• Journal of Convergence for Information Technology
• /
• v.11 no.12
• /
• pp.254-264
• /
• 2021

This study was conducted to investigate changes in posture and muscle characteristics by applying mat pilates and kinesio taping to college students with round shoulder posture and to investigate effective interventions. Subjects were 28 men and women with a round shoulder posture, and they were randomly assigned to a mat pilates group (MPG, n=14) and a Kinesio taping group (KTG, n=14). Each group performed the intervention for 4 weeks, and the distance from the ground to the acromion(DGA) and muscle characteristics (F: Frequency; S: Stiffness; D: Decrement) were measured before and after the intervention. Independent T-test was performed for the difference in the amount of change between groups, and the paired-sample T-test was performed for the difference between pre-post values within the group. Statistical significance level was set as 𝛼=.05. As a result of measuring the change in DGA in both groups, it was significantly decreased in MPG (p<.05). As a result of measuring the change in muscle characteristics of the two groups, the change in F in TL was significantly increased in MPG (p<.05), there was no change in TG, and the amount of change in MPG was larger in the amount of change between the two groups. appeared (p<.05). The change in S was significantly increased in MPG (p<.05). Therefore, the mat pilates conducted in this study is considered to be an effective intervention for improving the round shoulder posture and changing the muscle characteristics than kinesio taping.

• Proceedings of the Korean Information Science Society Conference
• /
• 2005.07b
• /
• pp.811-813
• /
• 2005

주어진 영상에서 인체를 찾고 그 자세를 인식하기 위해 자세나 조영 조건의 변화에 됨 민감한 방법으로 구성요소에 기반한 접근이 있다. 본 논문에서는 10개의 구성요소와 그들간의 유연한 연결로 구성된 인체모델을 사용한다. 각 구성요소는 기하학적, 명시적, 다른 구성요소와의 연결요소에 대한 정보로 구성되어 있다. 인체구성요소 사이의 계층적 연결은 일반-상세 탐색으로 시간효율적인 인체 매칭을 가능케 한다. 본 논문에서는 새로운 인체를 찾을 때마다 인체 구성요소를 갱신함으로써 자세 및 조명 변화에 보다 적응적으로 자세를 추정하는 방법을 제안한다.

• The Journal of Korean Society for Radiation Therapy
• /
• v.14 no.1
• /
• pp.85-88
• /
• 2002

I. 목적 : arm-up holder는 흉부 및 복부 질환 치료의 환자고정에 유용하게 사용하고 있으나 손잡이 부분과 어깨가 닿는 부분까지 거리 때문에 동일한 자세를 유지하는데 불편함이 있다. 특히 긴장을 많이 하거나 기력이 없는 환자는 방사선 치료 시 자세의 불안정으로 인하여 치료의 정확성이 떨어질 수 있다. 이에 본원에서는 현재 사용하고 있는 arm-up holder에 팔의 지지를 위한 보조기구를 제작하여 유용성을 평가하였다. II. 대상 및 방법 : 기존의 arm-up holder에 어깨받침대를 부착하여 개선된 arm-up holder를 제작하였다. 실험을 위하여 기존의 arm-up holder를 사용하는 환자그룹과 개선된 arm-up holder를 사용하는 그룹으로 구분하여 자세 변화를 평가하였다. 두 그룹의 환자를 대상으로 모의 치료를 실시한 후 치료실에서 L-gram 을 2회 씩 촬영하여 치료하고자 하는 portal film과 isocenter의 변화를 측정했다. 각 그룹 당 10명씩의 환자를 선정하여 반복 조사하였다. III. 결과 : 개선된 arm-up holder를 사용한 그룹의 isocenter 의 변화는 최대 2mm, 최소 0.5mm 평균 1.2mm 이다. 기존의 arm-up folder를 사용한 그룹과 비교하여 평균변화는 약 2배로 나라났고, 최대 변화는 2.5배의 오차범위가 측정되었다. IV. 결론 : 현재 사용하고 있는 arm-up holder는 흉부 및 복부의 사방향 방사선 치료 시 팔에 의한 방사선 감약을 예방할 수 있는 유용한 고정용구이다. 하지만 팔을 올리고 있는 자세는 환자에게 불편함을 야기 시키며 이로 인한 치료의 정확성을 감소시킬 수 있다. 따라서, 기존의 arm-up holder에 보조기구를 제작하여 사용함으로써 환자의 불편함을 개선하고, set-up 의 안정성과 재현성을 향상시킬 수 있었다.

• The Korean Journal of Nuclear Medicine Technology
• /
• v.16 no.1
• /
• pp.91-95
• /
• 2012

Purpose: In this study, we evaluated the ejection fraction (EF) according to the difference of patient position in Gated Blood Pool (GBP) scan. Material and Methods: The analysis was performed to 80 patients ($51.2{\pm}17.4$ years old) who examined GBP scan in Department of nuclear medicine, National Cancer Center from March 2011 to August 2011. We divided the patients into two groups; one group received conventional position (raise left arm up supine) and supine position (group 1) and the other group received conventional position and left arm back down supine position (group 2). To observe the change EF according to patient position difference, the image was reconstructed and analyzed by Xeleris (GE, USA). We measured body mass index (BMI) of patients. Result: In group 1, EF error less than 3% occurred at a rate of 72.5% (29 of the 40 patients). In group 2, EF error less than 3% occurred at a rate of 79% (32 of the 40 patients). The patient's BMI did not affect ejection fraction. Conclusion: The EF error of left arm back down supine position closer to conventional position than in supine position shows the results.