지진가속도계의 miniSEED/QSCD20자료구조 실시간 전송용 임베디드 플랫폼의 개발

안수홍,손수덕,이승재 대한건축학회 2016 대한건축학회논문집 Vol.32 No.9

In this study, an embedded data logger for realtime data transmission and signal storage of the seismic acceleration measurement data has been investigated. A database was planned in order to transform mini-SEED and QSCD20 formats among the data structure required for recording, storage and transmission of data in National disaster prevention system, and the sensor module, Global Positioning System(GPS) module and the power board were integrated by designing a 24bit Analog-Digital Converter(ADC) circuit on the main board. The developed data logger could record, save and transmit the measurement data more sensitively as over-sampled data, where a threshold-type trigger method was applied. The firmware to be installed in the data logger was developed to process time synchronization using GPS, AD transformation and the storage/transmission of multi-format data structure. This was designed to have a high portability to the existing seismic acceleration measurement system along with the web interface for operating environment configuration of the data logger, and the data transformation, storage/transmission and the rate of data transmission according to required specifications were tested, compared and verified. The design of the embedded platform developed in this study is expected to expand the applicability of the existing seismic acceleration measurement sensor and the integrated management system of seismic acceleration measurement data.

다양한 발목각도에 따른 스쿼트 시 오른쪽 다리의 근 활성도 비교

안수홍,이수경,이광준,박진성,황제웅 대한고유수용성신경근촉진법학회 2017 PNF and Movement Vol.15 No.3

Purpose: This study aimed to compare muscle activities in the right leg during squatting on an angle-adjustable inclined wooden plate at three different angles. Methods: The subjects were 19 healthy adult men and women. An angle-adjustable inclined wooden plate was used for the experiment, and the subjects performed squatting at three adjusted angles of 0° ankle angle, 10° ankle flexion, and 10° plantar flexion. Squatting was randomly performed without a sequence. The knee angle was set at 45°, and a goniometer was used to measure the angles accurately. Electromyography was employed to measure and compare muscle activity in the right leg in each condition. The measured data were converted to root mean square values to calculate the muscle activities. Results: This study showed no statistically significant difference at a 0° ankle angle, but a statistically significant difference was found in the vastus medialis at 10° of ankle flexion. Moreover, statistically significant differences were observed in the vastus medialis and lateralis at 10° of plantar flexion. Conclusion: This study showed a statistically significant difference in the vastus medialis at 10° of ankle flexion and statistically significant differences in the vastus medialis and lateralis at 10° of plantar flexion. Therefore, it may be effective to perform squatting at 10° of ankle flexion when intending to selectively strengthen the vastus medialis and at 10° of plantar flexion when intending to strengthen both the vastus medialis and lateralis.

발사 후 은닉형 배꼽연결기 분리장치에 관한 연구

안수홍,Ahn, Soo-Hong 한국군사과학기술학회 2013 한국군사과학기술학회지 Vol.16 No.5

After the missile is launched, the umbilical connector should be separated from it without any physical interference. The umbilical separation device, for this purpose, was developed by means of new concept. Using the investigation of various methods to separate the umbilical connector, a suitable method was selected and a corresponding device was designed and manufactured. To ensure the performance of the developed device, numerical analysis and performance test were conducted and correction was followed. The umbilical separation device was applied to real system operation test and its operation performance was tested. In consequence, several problems were founded, however, good results were generally obtained.

다양한 자세에 따른 턱 당기기 운동이 목과 어깨의 근활성도에 미치는 영향

안수홍,양주희,이수경,박진성,조재성 대한고유수용성신경근촉진법학회 2020 PNF and Movement Vol.18 No.3

Purpose: This study examined how performing chin tuck exercises in supine, sitting, and standing positions affects changes in the muscle activity of the neck and shoulder. Methods: Seventeen men and three women with forward head posture participated in the study. The subjects performed the chin tuck exercise using a pressure biofeedback unit. After determining the ideal order for performing the chin tuck exercise in supine, sitting, and standing positions through randomized controlled trials, muscle activity was measured in the dominant-side sternocleidomastoid, scalenus anterior, upper trapezius, and levator scapulae. Muscle activity was measured three times in each muscle for each position, and the average of the three measurements was used for analysis. Results: In this study, the chin tuck exercise performed in a supine position reduced muscle activity of the sternocleidomastoid, scalenus anterior, upper trapezius, and levator scapulae significantly more than performing the exercise in either sitting or standing positions (p < 0.05). No significant difference in muscle activity was observed when the exercise was performed in a sitting position versus a standing position (p < 0.05). Conclusion: Performing a chin tuck exercise in a supine position is more effective for stabilizing the neck and shoulder than performing it in a sitting or standing position, as it reduces excessive tension and fatigue in the neck and shoulder.

개폐식 대공간 건축물을 위한 영상 전송 장치에 관한 연구

안수홍,강주원,손수덕,Ahn, Soo-Hong,Kang, Joo-Won,Shon, Su-Deok 한국공간구조학회 2018 한국공간구조학회지 Vol.18 No.4

케이블-기반 개폐식 지붕의 모니터링을 위한 영상 전송 장치 개발

안수홍,손수덕,이승재,강주원 한국공간구조학회 2019 한국공간구조학회지 Vol.19 No.4

The cable-based retractable membrane roof makes it impossible to maintain its shape and stiffness during driving process, unlike the hard-type retractable roof. Consequently, monitoring using a relatively simple wireless video transmission device is required. However, since video data has a bigger transmission rating than other monitoring data in terms of the structure velocity or acceleration, there is a need to develop transmission device that is easy to install and entails low maintenance cost. This paper studies on a real-time video transmission system for monitoring the cable-based retractable membrane roof while driving. A video transfer software, using the mobile network, is designed and the embedded system is constructed. Ultimately, the data transmission server is tested. Connecting a trolley to the system allows testing of the validity and efficiency of the developed system through the video data transmitted in the driving process. Result of the test shows that the developed system enables multi-device data transfer with monitoring via the mobile network.

HaCaT 세포에서 12-O-tetradecanoylphorbol 13-acetate (TPA)가 케라틴 발현에 미치는 효과

안수홍,이승호,김대광,김주영 대한해부학회 2003 Anatomy & Cell Biology Vol.36 No.4

자궁경부임신의 보존적 치료

안수홍,우병욱,이영기,이두진 대한산부인과학회 1996 대한산부인과학회 학술대회 Vol.77 No.-

신발 착용 유무에 따른 20대 성인의 동적 균형 및 다리의 근활성도 변화 비교

안수홍,이수경,양주희,조재성,박진성,Ahn, Su-Hong,Lee, Su-Kyong,Yang, Ju-Hui,Jo, Jae-Sung,Park, Jin-Sung 대한고유수용성신경근촉진법학회 2021 PNF and Movement Vol.19 No.2

Purpose: The purpose of this study was to investigate the difference in the dynamic balance and leg muscle activity of adults in their 20s with or without shoes. Methods: In this study, seven male and 11 female university students in their 20s were randomized to determine the order of being with or without shoes, and the dominant foot was supported on the central platform of dynamic balance according to the order procedure. Using the opposite foot, the distance of leg stretching in the anterior, posterior medial, and posterior lateral directions and the muscle activity of the supporting leg were measured. Muscle activity measurement sites were attached to the dominant vastus medialis oblique muscle, vastus lateral oblique muscle, tibialis anterior muscle, peroneus longus muscle, and lateral gastrocnemius muscle. Results: As a result of this study, the distance of leg stretching was significantly increased in the anterior, posterior medial, and posterior lateral directions when barefoot rather than when wearing shoes (p < 0.05). The muscle activity of the vastus medial and lateral oblique muscles was significantly increased in all three directions when barefoot rather than when wearing shoes (p < 0.05). The muscle activity of the tibialis anterior was significantly increased in the anterior direction when barefoot (p < 0.05), the peroneus longus muscle was significantly increased when it was barefoot in the posterior medial direction (p < 0.05), and the lateral gastrocnemius muscle activity significantly increased when barefoot in the posterior direction (p < 0.05). Conclusion: The movement of the legs is freed when barefoot as compared to when wearing shoes, and being barefoot can effectively activate muscle activity and improve balance ability.

PNF 다리 굽힘 패턴 시 복부 드로잉-인 기법 동시적용이 동측 몸통과 다리의 근활성도에 미치는 효과

안수홍,이수경,조현대,Ahn, Su-Hong,Lee, Su-Kyong,Jo, Hyun-Dai 대한고유수용성신경근촉진법학회 2020 PNF and Movement Vol.18 No.1

Purpose: The purpose of this study was to investigate the effect of the simultaneous abdominal drawing-in maneuver (ADIM) on the muscle activity of the ipsilateral trunk and leg during proprioceptive neuromuscular facilitation (PNF) leg flexion, adduction, and external rotation with knee flexion (D1) patterns. Methods: The participants were 20 healthy adult males and females (18 males and 2 females). The maneuvers were performed by a physical therapist who fully understands the PNF leg patterns (D1) and their application in clinical practice. The participants were trained and allowed to practice for 15 minutes prior to applying ADIM, to ensure adequate learning as evidenced by the pressure biofeedback unit. In this study, we measured the muscle activity of the trunk and leg when the PNF leg pattern (D1) was performed by the physical therapist either sustaining or releasing the ADIM. Muscle activity was measured on the right transverse abdominis muscle (TRA), the external abdominal oblique muscle (EO), the internal abdominal oblique muscle (IO), the erector spinae muscle (ES), the vastus medialis oblique muscle (VMO), the vastus lateralis oblique muscle (VLO), and the tibialis anterior muscle (TA) and compared using the mean values from averaging three repeated measurements. Results: The muscle activity of the transversus abdominis, the external abdominal oblique, the internal abdominal oblique, the vastus medialis oblique, and the vastus lateralis oblique was significantly greater (p < 0.05), and the muscle activity of the erector spinae was significantly less (p < 0.05) during PNF leg pattern (D1) when the ADIM contraction was sustained compared to when it was not. Conclusion: These results suggest that sustaining ADIM during PNF leg pattern (D1) training increases the trunk and leg muscle activity, resulting in more effective training.