• The Bulletin of The Korean Astronomical Society
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• v.41 no.2
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• pp.48.2-48.2
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• 2016

The wide-field and the round-the clock operation capabilities of the KMTNet enables the discovery, astrometry and follow-up physical characterization of asteroids and comets in a most efficient way. We collectively refer to the team members, partner organizations, the dedicated software subsystem, the computing facility and research activities as Deep Ecliptic Patrol of the Southern Sky (DEEP-South). Most of the telescope time for DEEP-South is devoted to targeted photometry of Near Earth Asteroids (NEAs) to push up the number of the population with known physical properties from several percent to several dozens of percent, in the long run. We primarily adopt Johnson R-band for lightcurve study, while we employ BVI filters for taxonomic classification and detection of any possible color variations of an object at the same time. In this presentation, the progress and new findings since the last KAS meeting will be outlined. We report DEEP-South preliminary lightcurves of several dozens of NEAs obtained at three KMTNet stations during the first year runs. We also present a physical model of asteroid (5247) Krylov, the very first Non principal Axis (NPA) rotator that has been confirmed in the main belt (MB). A new asteroid taxonomic classification scheme will be introduced with an emphasis on its utility in the LSST era. The progress on the current version of automated mover detection software will also be summarized.

• Journal of Navigation and Port Research
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• v.28 no.3
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• pp.207-211
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• 2004

The final goal of this research is to establish the relative dangerousness D/B for factors on seakeeping performance. This D/B is essential to develope the seakeeping performance evaluation system built-on-ship. The system is composed of the apparatus for measuring a vertical acceleration to be generated by the ship's motions, computer for calculating the synthetic seakeeping performance index and monitor for displaying the evaluating diagram of navigational safety of ship. In this paper, a methodology on the establishment of the relative dangerousness D/B for factors on seakeeping performance is presented by a numerical simulations, playing an important role on the algorithm of the program for calculating the synthetic seakeeping performance index. Finally, It is investigated whether the relative dangerousness D/B can be realized an accurate values according to the loading conditions, weather conditions, wave directions end present ship's speed of a model ship.

• 한국벤처창업학회:학술대회논문집
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• 2016.04a
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• pp.40-43
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• 2016

본 연구는 특허청의 지식재산스타기업 육성 정책을 통하여 발굴 선정된 지역의 지식재산스타기업을 대상으로 지식재산활동이 기업의 경영성과에 긍정적인 영향을 미치는가를 분석하는데 목적이 있다. 이 목적을 달성하기 위하여 2009~2011년 지식재산스타 기업으로 선정된 16개 지역의 383개 기업에 대하여 정책을 지원한 전년도와 당해 년도의 지식재산활동 및 경영성과를 분석하여 지식재산스타기업 육성 정책의 필요성을 기업에 확산시키고, 더불어 지식재산 지원정책의 활성화 방안을 제시하고자 한다. 특허청은 2006년부터 지역 중소기업의 견실한 성장을 위하여 지식재산권 중심의 기술경쟁력을 강화하여 독점적 지위 확보와 새로운 시장 개척(First-mover)의 기반을 확충할 수 있는 방안으로 성장 잠재력과 기술력을 가진 지역의 유망 중소기업을 발굴하여 3년간 지식재산컨설팅 및 특허 디자인 브랜드 등에 대한 맞춤형 종합지원을 제공하여 지역의 대표기업으로 성장시키는 "지식재산스타기업 육성 정책"을 시행하고 있다. 이와 같은 지식재산스타기업 육성 정책 지원을 통한 기업의 지식재산활동 중 지식재산 출원건수와 지식재산 전담인력수가 기업의 경영성과에 긍정적인 영향을 미칠것이라는 가설을 실증분석한 결과, 기업의 지식재산 전담인력이 많은 기업들이 경영성과에 긍정적인 영향(매출액 증가)을 주는 것으로 나타났다. 따라서, 본 연구결과에서는 중소기업에서는 체계적인 지식재산경영을 위한 전담인력 확충 등 노력이 요구되며, 정부 및 관련기관에서는 지역의 대표적인 강소기업 육성을 위하여 기업의 지식재산 경쟁력을 강화할 수 있는 "중소기업의 지식재산 전담인력 양성 프로그램"을 확대하고 지식재산 전담인력 확충에 필요한 지원 정책의 필요성을 시사하고 있다. 본 연구 이후에는 지식재산스타기업의 연구개발(R&D) 투자와 수출역량 등 연구표본의 다양화를 통하여 중소기업의 지식재산경영 실태를 분석함으로써 지식재산 기반의 '글로벌 강소기업 육성 정책'을 수립하는데 실질적인 방안을 제시할 수 있는 연구과제가 실행될 수 있을 것이다.

• Journal of the Korean Magnetics Society
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• v.25 no.2
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• pp.58-65
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• 2015

This paper deals with the generating characteristic analysis of permanent magnet linear generator (PMLG) with double-sided Halbach magnet array mover and three phases concentrated stator windings by using analytical method. On the basis of a magnetic vector potential and Maxwell's equations, governing equations are obtained, and magnetization modeling for Halbach magnet array is performed analytically by using the Fourier series. And then, we obtain electrical parameters such as back-EMF constant, resistance, and coil inductance based on magnetic field calculations. Finally, analytical results for generating performance are confirmed by comparing with finite element analysis results.

• Journal of the Ergonomics Society of Korea
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• v.14 no.1
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• pp.9-23
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• 1995

The objectives of the study were twofole: (1) to investigate effects of rhythmic contraction and sustained contraction methods on recovery rate of isometric endurance capacity and (2) to compare aptterns of muscle recruitment of both arms observed during each contraction period. In the experiment, each of two subjects performed five successive rhythmic or sustained isometric contractions at 50% MVC with both arms to the point of fatigue, which was the failure to maintain the required tension. In making the contractions, the subjects stood erect with upper arms held at an angle of approximately 90 .deg. to the forearm. The interval between the successive contractions was kept constant at 3, 7, 20, or 40 minutes. Regardless of the contraction methods, the recovery rate was least at the shortest interval and was highest at the longest interval. However, a statistical analysis showed that the recovery rates for the rhythmic contractions were significantly lower than those for the sustained contractions throughout 4 different intervals. Furthermore, as the frequency of the rhythmic contractions per min, increased 4 to 6 times, the recovery rate of isometric endurance capacity decreased. From an EMG anglysis, recruitment pattern of the muscules of both arms was found to be common between two different contraction methods. The biceps muxcles of the upper arms played a major role in exerting 50% MVC, while the brachioradialis muscles of the forearms acted as synergists. As the contraction proceeded, the role of the biceps muscles as a prime mover lessened due to the fatigue. Then, the brachioradialis muscles exerted more strength to sustain 50% MVC. The implications of these finding were discussed.

• Journal of the Korean housing association
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• v.20 no.4
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• pp.103-112
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• 2009

The purpose of this research was to find out the housing history of Sakhalin returnees in Ansan Gohyangmaeul since leaving hometown under the Japanese ruling period, who experienced two international migration for one's life. Face to face interview had been done with 20 returnees in the community center of Ansan Gohyangmaeul during October to December, 2008. The semi-structured questionnaire about housing the respondents lived in major life changes used to guide the individual interview. The results showed that personal life as well as housing histories were differed by the reason to move into Sakhalin, which still influenced the returnee' life up to now. The housing they had lived changed from barracks like a training camp, to Japanese small wooden cottage/row house, and then Russian brick house/ apartment. Housing alteration and addition and rebuilding were common to renew the old existing house. The boundary of residing area was mostly limited to the first residing location under soviet governing system throughout one's life without a long distance move. Housing satisfaction was very high in Gohyangmaeul because of the improvement of housing facilities and residence itself as well as the convenience of housing management, compared to former residence in Sakhalin. Economic and emotional aspects of life satisfaction were also high during about 8 years of living in the apartment. Forced movers still require the compensation on hand to either Korean or Japanese government no matter the amount. Social integration to the Korean community would be one of the main issues to new returnees as well as the already returned. In-depth interviews of case study need to reveal the unique housing experience of the forced mover according to the type of leaving hometown by oneself or by parents, and to returned region and time to motherland.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.16 no.4
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• pp.64-72
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• 2002

The use of linear DC motor is spreaded according to industrial development. This study was objected to study the analysis of double side excitation LDM with moving magnet type. In this LDM structure, the mover made use of permanent magnet with six pieces so as to large thrust, the stator was bedded for the multi separated type winding to repress the i개n saturation. Also, double side excitation winding is suppressed to thrust ripple with stratification to zigzag type and designed to production for static thrust. Then it is important to ratio of permanent magnet to winding width at multi separate, this paper analyzed to separate to three pieces of 1:1, 1:0.84 and 1:0.5 with width ratio. The analysis method calculated the parameter useful for permeance and magnetic resistance more than FEM of complicated numerical value analysis. Through manufactured experiment system, measurement result of thrust was almost acquired to constant thrust for all displacement.

• Journal of Korean Medical classics
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• v.28 no.1
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• pp.71-95
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• 2015

Objectives : I'd like to introduce a Korean medical scientist, Lee Gyoojoon (李圭晙, 1855-1923)'s achievements about Huangdi's Internal Classic (黃帝內經, HIC) to examine the Section of Viscera and Bowels to inspect the Medical Classics (稽經藏府篇, SVBIM) of the Double grinded Medical Mirror (醫鑑重磨, DMM), which is a medical book published in 1922, his last studies. And I'd like to describe its meaning of medical history. Methods : For this, I compared the DMM with two primary texts, the representative medical books of Joseon dynasty, Treasured Mirror of Eastern Medicine (東醫寶鑑, TMEM) and Lee's former research result of HIC, Major Essentials of Huangdi's Internal Classic Plain Question (黃帝內經素問大要, MEHIC), in the aspects of the original text, annotation, editing, attached theses, and so on. Results : Lee Gyoojoon criticized the TMEM in two aspects. First, it was unfocused and miscellaneous, second, it intended to help Yin Qi (陰氣) and reduce Yang Qi (陽氣) so that it regards a prime mover, Yang Qi, as an enemy. In order to solve these problems he deleted miscellaneous articles and sort out the points to accord with the HIC. As a result, he had written the Section of SVBIM of the DMM in the form of revising the subtitles or refuting the contents of TMEM and quoted the partial texts of MEHIC to be written by the view of Supporting Yang Qi (扶陽). Conclusions : Lee Gyoojoon proposed the Supporting Yang Qi medicine to preserve the Heart fire (心火) based on his lifelong Neo-Confucianism (性理學) study. The Section of SVBIM of the DMM showed how to apply his medical theory, which is achieved by the study of the medical classic HIC to real clinical medicine through a medium of the TMEM. In addition, it could explain concretely how the Confucianists studied the medicine and how Confucianism can impact to the development of medical theory.

• Journal of the Korean Society of Costume
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• v.53 no.6
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• pp.11-23
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• 2003

Japonese woodblock printing has been accepted with a great curiosity at first, and it has been called as 'Japonisme' or 'Japonaiserie' in which the school of Impressionism accepted the Japanese type of art and developed it in Europe. The term of Japonisme is the concept that does not refer to one style but to the taste for Japanese painting, craft, fashion and the like in Europe proved as the historical phenomenon through Japanese works. That is, it means every Japanese disposition including all artistic techniques and contents relating to Japanese tastes in Europe. Fashion of dress as Japanese expressed in European painting works not only symbolizes the 'modernity' expressive of the aspiration and nostalgia for Japan but presents the Japan of exotic taste as the inquisitive object of sexual interest. And the expressive method of the peculiar the beauty of the body was described in Japanese painting works because of the fashion characteristics that the frontal side of Japanese clothing was presented in a more decorative and formative way than its reverse side due to decorative design and belts. It could be found that this was introduced actively into the painting works of the impressionist school. This study attempts to discuss the expressive style including the pictorial style, technique and theme shown in the accommodating process of Japanese painting in the Impressionistic school and investigate the phenomenon of Japonisme that was conducted in the western Europe. Accordingly, this study attempts to find out that clothing takes an important place as the aesthetic category of one historical point in time by investigating the Japanese clothing of the times shown in impressionist painting works and that clothing forms the stylistic characteristics and formative characteristics of painting. It could be found that dress existed not only as the instrument capable of illustrating the aesthetic attitude or will of the human being as visual identity but as plastic art and became the prime mover for reinterpreting and changing the plastic style of art frontier.

• Journal of Biosystems Engineering
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• v.25 no.6
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• pp.457-462
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• 2000

Boom sprayers have been known by their excellency in field efficiency worker’s safety and pest control efficacy. The boom sprayer in Korea that was developed for paddy field is not suitable for upland field of which shape is irregular and inclination is steep, due to heavy chemical tank long boom width and manual on-off control of spraying. The goal of the study was to develope a boom control system that could control boom angles of left and right boom automatically and independently corresponding to local field slope. The prime mover was selected as a cultivating tractor. Main results of this study were as follows. 1. Ultrasonic sensor whose response time was 0.1s and response angle was within $\pm$20$^{\circ}$was selected to measure distance. Voltage output of the sensor(X, Volt) had a highly significant linear relationship with the vertical distance between the sensor and ground surface(Y, mm) as follows; Y=0.0036X-0.437 2. Left and right section of the boom could be folded up by a position control device(on-off control) which could control the left and right boom independently corresponding to local slope by equalizing distances between the sensor and boom at the center and left/right boom. Most reliable DB(dead band) was experimentally selected to be 75$\Omega$(6cm). 3. At traveling velocity of 0.3~0.5m/s RMS of error between desired and achieved height was less than 4.5cm The developed boom angle controller and boom linkage system were evaluated to be successful in achieving the height control accuracy target of $\pm$10cm.