• Korean Journal of Applied Biomechanics
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• v.18 no.1
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• pp.245-253
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• 2008

The purpose of this study was to analyze the effects of shoes with curved out-sole on the posture variation and its control strategy. At first, Target shoes(s) was made by evaluating the static postures of 7-female university students via 'New York State Posture Test' on shoes which made the relative angle between foot surface and ground surface of shoe change. At second, we evaluated muscle activity for 30-female university students(10 persons-3 groups) on shoes which were s(target), m shoes with curved out-sole and n shoes with flat out-sole. 1. The posture scores on New York State Posture Test were statistically different according to the relative angle changes, and the best angle for score was -7 degree but, the scores charts were like two humped camel at -2, -7degree. we made the shoe with -7 degree and curved out-sole. 2. s, m shoes with curved out-sole had graded muscle activities but, static posture on bare foot, there were the graded activity on gastrocnemius for s shoes and tibialis anterior for m shoes, but on shoes, only Gastrocnemius for s shoes.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 2006.04a
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• pp.145-149
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• 2006

모바일 맹핑시스템에 장착되어 있는 카메라와 INS의 물리적 관계 (두 좌표축 간의 거리(lever-arm) 와 각도(boresight) 캘리브레이션은 카메라 영상의 지리적 정보를 생성하기 위해 필요로 한다. 이 목적을 위해 기존연구는 카메라 캘리브레이션을 통하여 이 물리적 관계를 추정하고 있다. 카메라 캘리브레이션은 3차원 좌표가 할당된 타겟을 이용하여 움직이는 카메라의 렌즈 왜곡과 내/외부 표정 계산하는 것이다. 이 추정에서, 저가의 INS의 초기상태인 자세, 각도는 사용자의 측량에 의해 결정이 된다. 만약 정교한 측량이 없을 경우, 카메라 영상의 지리적 정보는 잘못된 정보를 제공 할 것이다. 정교한 측량의 어려움을 피하기 위해, 본 논문은 카메라와 초기상태 정보가 없는 INS간의 물리적 관계를 위한 수학적 모델을 설계하였다. 시스템에 장착된 카메라와 INS의 초기 기준 좌표계의 관계는 lever-arm과 boresight을 이용한 좌표축 변환으로 정의 될 수 있으며, 이 시스템이 이동 후, 카메라 초기 기준 좌표계에서 INS의 위치는 두 개의 벡터 경로로 정의 될 수 있다. 이 두 벡터 경로는 카메라와 INS의 상대 외부표정의 관계를 이용하여 계산된 벡터들의 조합으로 정의된다. 본 논문은 여러 쌍의 경로로부터 lever-arm과 boresight을 추정하였다.

• The Journal of the Korea Contents Association
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• v.7 no.8
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• pp.191-198
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• 2007

Due to the growth of female movement after 1970s' and the resultant interest in female activity changed the type and degree of female crime and thus led to considerable interest and research. As a result, the relative difference between crime rates of sexes has been reduced, but the crime of male and female has been considerably decreased owing to sex role and concept of self-ego, more generally specking, the result of female movement. As countermeasure for the recently increasing frmale crime, this research presents first, enhancement of social education; second, arrangement of relevant institutions; third, activation of the system of female investigator; fourth, the necessity of victimology approach.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.48 no.11
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• pp.873-880
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• 2020

In this paper, we propose a guidance filter to estimate line of sight rate with strapdown seeker measurements and INS(Inertial Navigation System) information. The measurements of proposed guidance filter consisted of the LOS(Line of Sight) and relative position that can be calculated with the seeker's measurements, INS information and known target position, also the filter is based on an asynchronous filter to use outputs of the two sensors that are out of synchronous and period. Through the proposed filter, we can reduce the effect on parasitic loop that can be caused by using large time delay seeker and improve the estimation performance.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.37 no.3
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• pp.171-179
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• 1988

This paper deals with the controller design of the flight control system using the model reference adaptive control approach. The structure of the adaptive control system is based on the structure suggested by NARENDRA and VALAVANI. In particular, the problem is considered in case of the relative degree n=2 of plant. The flight control system is single-input single-output system, and the control input is given from the input-output data of the referencemodel and plant. For the analysis of the designed control system, thesimulation is perfarmed in cases of analog plant and analog plant with flight motion table, and reviewed.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.26 no.6
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• pp.611-616
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• 2008

When extracting geo-referenced 3D data from cameras mounted on Mobile Mapping Systems, one of important properties for accuracy of extracted data is the alignment of the relative translation(lever-arm) and rotation(bore-sight) between the coordinate systems of Inertial Measurement Unit(IMU)/Ground Positioning System(GPS) and cameras. Since the conventional method calculates absolute camera orientation using ground control points (GCP), the alignment is determined in one Coordinated System (GPS Coordinated System). It basically require GCP. We proposed a mathematical model for the alignment using the initially uncoupled data of cameras and IMU/GPS without GCPs.

• The Bulletin of The Korean Astronomical Society
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• v.36 no.1
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• pp.79.2-79.2
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• 2011

대전국립중앙과학관의 천문영역 전시가 Booth et al(2008)의 논증을 기초로 한 과학철학 측면에서 얼마나 잘 부합되는지 확인하는 것이 이 연구의 목적이다. 과학관은 비형식 교육기관 중 하나이다. 과학관의 전시물들은 관람자들에게 정보를 전달하고, 관람자들은 전시물들을 통하여 지식을 탐구한다. 그러므로 교육적 상호작용을 뒷받침하는 이론적인 기준이 필요하다. Booth et al(2008)이 주장한 논증모형은 관람객의 심리적인 진행과정을 고려한 과학철학이다. 그렇기 때문에 과학관 전시에 Booth et al(2008)의 논증이 적용된다면, 관람객들은 전시물들이 의도한 지식을 스스로 탐구 할 수 있다. 김정엽(2011)은 Booth et al(2008)의 논증을 이용하여 과학관 천문영역 전시형태를 재구성하였고, 대학생들을 상대로 설문 조사와 SPSS 통계 분석을 수행하여, 재구성한 전시형태가 정보전달과 지식 탐구 관점에서 기존보다 더 설득력 있음을 보인 바 있다. 최근 대전국립중앙과학관은 천문영역 전시를 개선하였다. 그러므로 개선된 전시가 Booth et al(2008)의 논증을 기반으로 한 기준에 적합한지를 재분석할 필요가 있다. 분석 결과, 거시적인 전시형태는 이전에 비해 큰 변화를 보이지 않았으나, 미시적인 전시내용은 상당히 많은 부분에서 개선이 있음을 확인하였다. 그 자세한 분석 내용과 결과를 논의한다.

• Journal of Korean Society of Forest Science
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• v.82 no.2
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• pp.107-121
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• 1993

This study examines whether or not forest campers' self-actualization, that is the tendency for a person to become actualized in what he or she perceived to be his or her own potential, and their attitudes toward nature were related to quality of forest areas where they visited. People were sampled in three Ontario Provincial Parks in Canada from September of 1988 to August of 1989. From a total of 138,317 campers, 540 were sampled randomly to collect data. People sampled ranged in age from 15 to 75 years with a mean of slightly over 37. They were highly educated. A majority of them resided in urban or suburban areas. Campers' level of self-actualization and their nature attitudes were highly correlated with forest area quality in both perceived or subjective and objective measures. Their self-actualization scores were also highly correlated with their attitudes toward nature. However, there was no significant relationships among campers' self-actualization, attitudes toward nature, and quality of forests where they camped when they were treated simultaneously.

• Journal of Korea Society of Industrial Information Systems
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• v.24 no.6
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• pp.25-34
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• 2019

VTON (Virtual try-on) is a key technology that can activate the online commerce of fashion items. However, the early 3D graphics-based methods require the 3D information of the clothing or the human body, which is difficult to secure realistically. In order to overcome this problem, Image-based deep-learning algorithms such as VITON (Virtual image try-on) and CP-VTON (Characteristic preserving-virtual try-on) has been published, but only a sampled results on performance is presented. In order to examine the strength and weakness for their commercialization, the performance analysis is needed according to the complexity of the clothes, the object posture and body shape, and the degree of occlusion of the clothes. In this paper, IoU and SSIM were evaluated for the performance of transformation and synthesis stages, together with non-DL SCM based method. As a result, CP-VTON shows the best performance, but its performance varies significantly according to posture and complexity of clothes. The reasons for this were attributed to the limitations of secondary geometric deformation and the limitations of the synthesis technology through GAN.

• Journal of the Korean Society of Radiology
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• v.12 no.5
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• pp.651-658
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• 2018

A foot pedal switch in the diagnosis x-ray radiography system has been researched to improve radiologic technologist works and patient satisfaction. The switch has been installed in the diagnosis x-ray radiography system used in domestic clinics. Quantitative evaluation has been conducted by measuring the exposure dose reproducibility test, tube voltage, mAs, and percentage average error. Qualitative evaluation has been conducted by analysis of the radiologic technologists questionnaire. In the quantitative evaluation for the use of the foot pedal switch, the coefficient of variation was less than 0.05 in the exposure dose reproducibility test. In the mAs test, percentage average error of ${\pm}20%$ was measured. There was no problem raised since it meets the all inspection standards of the diagnosis x-ray generator. In the qualitative evaluation, most of the opinions are that it has a clinical value for the foot pedal switch in the diagnosis x-ray radiography system. Therefore, developing the foot pedal switch for the diagnosis x-ray radiography system can improve effectively the rapidity and accuracy of the radiologic technologist work. In addition, it is effective in decreasing the x-ray exposure of patients and increasing satisfaction for the medical service due to reduction of retaking x-ray.