• Journal of the Korean Society of Physical Medicine
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• v.13 no.1
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• pp.129-136
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• 2018

PURPOSE: This Study compared the level of activation of the muscles around the shoulder at the time of abduction through Pilates breathing and regular breathing by using quantified biofeedback. METHODS: Experiment was conducted on 25 healthy males and females in the age bracket of 20's~30's as the subjects. The level of activation of muscles displayed at the time of Pilates breathing were measured at intercostal (InC) muscle, transverse abdominis (TrA) muscle, internal oblique (IO) muscle and external oblique (EO) muscle by using surface electromyogram (EMG) and were provided as biofeedback. Moreover, the changes in the level of muscular activation at sternocleidomastoid (SCM) muscle, upper trapezius (UT) muscle and Deltoid (Del) muscle, which are the muscles around the shoulder, at the time of abduction of shoulder during Pilates breathing and regular breathing were measured. RESULTS: When abduction of shoulder is executed through Pilates breathing, the level of muscular activation of UT muscle was $11.56{\pm}7.10%$ at the time of exhaling of Pilates breathing and $17.54{\pm}9.57%$ at the time of exhaling of regular breathing. Del muscle also displayed lowered level of muscular activation at the time of Pilates breathing with $12.88{\pm}5.80%$ during inhaling and $15.14{\pm}5.49%$ during exhaling. CONCLUSION: In conclusion, the results could be interpreted as indicating that the muscle activities of upper trapezius and deltoid muscle were decreased based on Pilates breathing more than those on regular breathing.

• The Bulletin of The Korean Astronomical Society
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• v.35 no.1
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• pp.61.2-61.2
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• 2010

GMTNIRS (the GMT Near Infrared Spectrograph) is one of the first generation instrument candidates for GMT (Giant Magellan Telescope). Conceptual design studies for nine instruments were proposed last year, and the GMT organization selected 6 instruments including GMTNIRS for the next phase. GMTNIRS will be developed by an international collaboration between KASI and UT(University of Texas). KASI and UT have been also developing IGRINS (the Immersion Grating Infrared Spectrometer) which is a fore-runner instrument of GMTNIRS since 2009. In this talk, we will present the instrument details and development plan, and discuss the science case for GMTNIRS.

• Journal of the Korean Society of Costume
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• v.57 no.6 s.115
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• pp.87-100
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• 2007

In the Joseon Dynasty, a Court Ladies' full dress was Slanted by the Ming Dynasty. Since the Ming Dynasty had declined, a Court Ladies' full dress, Jeok-ui began to be made by the Joseon Dynasty. It was based on the Chinese Court Ladies' full dress, Desam, but it became Joseon's own style, which was different from the Chinese one. The formula of Jeok-ui was completed in the time of King Yongjo. Since then, Jeok-ui for big ceremonies was called Bub-bok. It was recorded on the Regular rule of Sang-uiwon. The color of Jeok-ui was departmentalized for the wearer; red one for the Queen, bluish black one for the Crown Princess, and purple one for the Queen mother. There were some differences between Jeok-ui for feasts and for big ceremonies. In the case of Jeok-ui for big ceremonies, the pattern of Hyung-bae for the Queen was a dragon with five claws, and for the Crown Princess, a dragon with four claws. On the other hand, in the case of Jeok-ui for feasts, the pattern of Hyung-bae was phoenixes for the Queen, Crown Princess and the Queen mother. The number of embroidered round badges, which were attached to Jeok-ui, was 51 for big ceremonies, and 36 for feasts. The skirt for big ceremonies was a Jeonang-ut-chima with dragons pattern for the Queen, and phoenixes for the Crown Princess. The Queen's skirt for feasts was a Jeonang-ut-chima with phoenixes pattern, and the Queen mother's also. The Crown Princess' was a double skirt with phoenixes pattern. The pearls were not decorated on the shoes for big ceremonies, but shoes for feasts had six big pearls fer decoration. When the royal woman wore Jeok-ui for big ceremonies, it was prepared for Kyu, Pe-ok and belt with jade. But those were not necessary for Jeok-ui for feasts.

• The Transactions of the Korean Institute of Electrical Engineers D
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• v.55 no.2
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• pp.68-71
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• 2006

Active thermography has been used for several years in the field of remote non-destructive testing. It provides thermal images for remote detection and imaging of damages. Also, it is based on propagation and reflection of thermal waves which are launched from the surface into the inspected component by absorption of modulated radiation. For energy deposition, it use external heat sources (e.g., halogen lamp or convective heating) or internal heat generation (e.g., microwaves, eddy current, or elastic wave). Among the external heat sources, the ultrasound is generally used for energy deposition because of defect selective heating up. The heat source generating a thermal wave is provided by the defect itself due to the attenuation of amplitude modulated ultrasound. A defect causes locally enhanced losses and consequently selective heating up. Therefore amplitude modulation of the injected ultrasonic wave turns a defect into a thermal wave transmitter whose signal is detected at the surface by thermal infrared camera. This way ultrasound thermography(UT) allows for selective defect detection which enhances the probability of defect detection in the presence of complicated intact structures. In this paper the applicability of UT for fast defect detection is described. Examples are presented showing the detection of defects in PCB material. Measurements are performed on various kinds of typical defects in PCB materials (both Cu metal and non-metal epoxy). The obtained thermal image reveals area of defect in row of thick epoxy material and PCB.

• Journal of the Korean Applied Science and Technology
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• v.37 no.1
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• pp.1-6
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• 2020

The purpose of this study was to investigate the effects of sling and vibrator application of knee push-up plus motion on trunk muscle activities. Ten healthy adult males(age, 23.00±0.45 years; height, 176.60±1.64 cm; body mass, 67.50±1.22 kg; and BMI, 21.65±0.34 kg/㎡) were participated in this study as subjects. Three types' knee push-up plus motions were performed(basic knee push-up plus motion, BKPP; knee push-up plus motion with sling, KPPS; knee push-up plus motion with vibration, KPPV). We measured the right side's trunk muscle activities of the upper trapezius(UT), pectoralis major(PM), serratus anterior(SA), rectus abdominis(RA), and external oblique(EO). The research findings were as follows. UT, PM, SA, RA, and EO muscle activities were greatest during KPPV(p<.001). These results are expected to serve as reference materials for knee push-up plus motion applications in training programs for trunk muscle strengthening.

• Journal of the Korean Society for Nondestructive Testing
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• v.17 no.1
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• pp.11-22
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• 1997

It is very essential to get the accurate classification of defects in primary pressure vessel and piping welds for the safety of nuclear power plant. Ultrasonic testing has been widely applied to inspect primary pressure vessel and piping welds of nuclear power plants during PSI / ISI. Classification of flaws in weldments from their ultrasonic scattering signals is very important in quantitative nondestructive evaluation. This problem is ideally suited to a modern ultrasonic Pattern recognition technique. Here, a brief discussion on systematic approach to this methodology is presented including ultrasonic feature extraction, feature selection and classification. A stronger emphasis is placed on Fuzzy-UTSCS (UT signal classification system) as efficient classifiers for many practical classification problems. As an example Fuzzy-UTSCS is applied to classify flaws in ferrite pressure vessel weldments into two types such as linear and volumetric. It is shown that Fuzzy-UTSCS is able to exhibit higher performance than other classifiers in the defect classification.

• Journal of the Korean Society for Nondestructive Testing
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• v.29 no.3
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• pp.248-255
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• 2009

After several damages by PWSCC were found in the world, USNRC and PNNL(Pacific Northwest National Laboratory) started the research on PWSCC under the project name of PINC. The aim of the project was 1) to fabricate representative NDE mock-ups with flaws to simulate PWSCCs, 2) to identify and quantitatively assess NDE methods for accurately detecting, sizing and characterizing PWSCCs, 3) to document the range of locations and morphologies of PWSCCs and 4) to incorporate results with other results of ongoing PWSCC research programs, as appropriate. Korea nuclear industries have also been participating in the project. Thermally and mechanically cracked-four mockups were prepared and phased array and manual ultrasonic testing(UT) techniques were applied. The results and lessons learned from the preliminary RRT are summarized as follows: 1) Korea RRT teams performed the RRT successfully. 2) Crack detection probability of the participating organizations was an average 87%, 80% and 80% respectively. 3) RMS error of the crack sizing showed comparatively good results. 4) The lessons learned may be helpful to perform the PINC RRT and PSI /ISI in Korea in the future.

• Journal of the Korean Society for Nondestructive Testing
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• v.36 no.6
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• pp.483-489
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• 2016

The typical methods used for inspecting ferromagnetic pipes include the ultrasonic testing (UT) contact method and the following non-contact methods: magnetic flux leakage (MFL), electromagnetic acoustic transducers (EMAT), and remote field eddy current testing (RFECT). Among these methods, the RFECT method has the advantage of being able to establish a system smaller than the diameter of a pipe. However, the method has several disadvantages as well, including different sensitivities and difficult-to-repair coil sensors which comprise its array system. Therefore, a giant magneto-resistance (GMR) sensor was applied to address these issues. The GMR sensor is small, easy to replace, and has uniform sensitivity. In this experiment, the GMR sensor was used to measure remote field and defect signal characteristics (in the axial and radial directions) in a ferromagnetic pipe. These characteristics were measured in an effort to investigate standard defects at changing depths within a pipe. The results show that the experiment successfully demonstrated the applicability of the GMR sensor to RFECT signal detection in ferromagnetic pipe.

• Journal of Animal Science and Technology
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• v.46 no.4
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• pp.555-562
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• 2004

본 연구는 목저은 다음과 같다: 1) 돼지에서 150-kDa temary insulin-like growth faetor(IGF)complex의 한 구성 요소인 acid-labile subunit(ALS) 유전자 intron의 존재 확인. cloning 및 돼지 ALS(porcine ALS; pALS) complementary DNA(cDNA)의 3' 비해독(untranslated) 부위(3' UT) 증폭. cloning, 2) intron-spanning primer pair를 이용한 reverse transcription-polymerase chain reaction(RT-PCR) 방법에 의한 돼지 조직에서의 ALS 유전자 발현 분포 확인 및 3) 돼지 hepatocyte에서의 ALS 유전자 발현 여부 확인. 돼지 genomic DNA를 template로 하여 PCR 방법으로 예상된는 intron 부위를 증폭하고 plasmid vector에 삽입하여 염기서열을 결정한 결과 타 종의 ALS 유전자에서와 같은 위치에 1,371-base pair(bp)의 pALS intron이 존재함을 확인하였다. 역시 본 연구에서 간에서 추출한 RNA를 주형으로 시작하여 3' rapid amplification of cDNA end(3' RACE) 방법으로 147-bp의 3'UT를 합성하고 그 염기성열을 결정하였다. RT-PCR 결과 간은 물론 조사된 모든 돼지의 내장기관(신장, 폐, 비장)과 자성 생식기관(난소, 난관, 자궁) 및 골격근육에서 ALS 유전자가 발현됨이 밝혀졌다. 또한 돼지 간 조직에 대한 in-situ hybridization 결과 hepatocyte에서 ALS 유전자가 발현됨이 확인되었다. 이상의 결과는 ALS가 혈중 IGF의 저정/조절체로서의 주기능 외에 모세혈관 밖에서도 미지의 기능이 있을 기능성을 시사한다.

• The Bulletin of The Korean Astronomical Society
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• v.36 no.2
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• pp.91-91
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• 2011

The passage of the interplanetary discontinuity (i.e., sudden increases in the solar wind speed, density, and IMF strength) was detected by ACE near GSE (x, y, z) ~ (222, -36, 3) Re upstream of Earth around 22:48 UT on November 24, 2008. About 55 min later, this solar wind discontinuity was observed by Geotail near GSE (x, y, z) ~ (23, 18, -7) Re in front of Earth's bow shock. From the propagation time of the solar wind discontinuity between ACE and Geotail, it is expected that the discontinuity front is aligned with the Parker spiral and strikes the postnoon dayside magnetopause first. Using coordinated multi-point measurements (THEMIS and GOES) at or in geosynchronous orbit, we observed a tailward propagating sudden impulse (SI), excited by the interplanetary discontinuity, around 23:50 UT with its front retaining alignment similar to that of solar wind discontinuity. The SI event appears a negative-then-positive variation in the H component at high latitude Chokurdakh (CHD: MLAT ~ 64.7 deg) in the prenoon sector, which is opposite sense of normal SI event. During the positive deflection at CHD, the SuperDARN Hokkaido radar detected the downward motion of the ionosphere, implying westward electric field enhancement, at subauroral latitudes near CHD meridian. In our study we will discuss magnetospheric and ionospheric responses to the passage of the solar wind discontinuity using multi-point observations in space and on the ground.