• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.17 no.1
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• pp.21-32
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• 1999

Mapping and precise point determination by photogrammetry have been shown to be an economic solution. But control points are necessary to determine the exterior orientation parameters. Although the number of required control points has been reduced based on extended bundle adjustment and reinforced cross-strip, the ground survey is a significant factor of whole expenses in photogrammetry. The status of GPS-photogrammetry with kinematic DGPS-positioning to overcome this disadvantages, is now steadly progressive since the first possibility has been proved. The completed satellite configuration, powerful receiver function and upgraded software for kinematic DGPS-positioning have extensively improved the accuracy of combined bundle adjustment. So the research for the operational use of GPS-photogrammetry is absolutely necessary. The presented test field was designed for identification of subsidences in a coal mining area, flown with 60％ sidelap and cross strips. Just with 6 control points and combined block adjustment instead of the traditionally used 21 horizontal and 81 vertical control points the same ground accuracy has been reached. The accuracy of kinematic GPS-positioning and combined block adjustment was independent upon the distance of the ground reference station. It also has been showed that the special model for the systematic error correction in the combined block adjustment.

• Proceedings of the Korea Crystallographic Association Conference
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• 2000.05a
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• pp.32-32
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• 2000

• Journal of Distribution Science
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• v.4 no.1
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• pp.141-160
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• 2006

The esthetic center skips over the dimension of simply theoretical knowledge by the specialization, segmentation, and gentrification and the importance of the technical education which introduced into the spot experienceis raising its head. And the esthetic center's importance which copes with the environment changing actively is being cognized. The franchisee system of esthetic shows that while the domestic market is opened, the appearance of foreign famous brand-centered is increasing rapidly. According to this kind of trend, every kind of mediums will not stop the classified ad of franchisee and it will be recognized as the promising sector. Especially, the situation of franchisee is that franchisors and franchisees in the limited relationship and just plan the growth, so the success possibly can be very high. The diffusion of franchisee system and the study about the franchisee are developed on the diverse view points. But still now, the study is just formed from the enterprise's success and the franchisors view point, the study about the franchisees dimension is very small. But it is also very important to exam the decision factors of franchisees success because the franchisors result of franchisee system will come out with franchisee performance totally. In this paper, it will actually proof if the decisive factors that exert influence on the franchisee performance in the franchisee dimension, exert influence on the franchisee performance in substance; and exam what kind of relationship the franchisee performance have with the franchisors and recontract intention. According to this, we can draw out the rest decision factors of improving the franchisee performance, and also show the strategic implication of franchisee efficient marketing.

• Journal of the Earthquake Engineering Society of Korea
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• v.5 no.5
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• pp.57-61
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• 2001

This study introduces an algorithm for determination of hypocentral parameters using phase analysis and two-point ray tracing to enhance accuracy and stability of computations. When the magnitude of earthquake is relatively small(usually $m_{b}$<3.2), the PmP phase which looks like the first arrival phase may be observed without observing the Pn phase. In this case, the hypocentral parameters calculated by the existing method using the first arrival of P and S phases and by the method developed in this study using PmP and SmS phases show large differences. The computational results of determination of hypocentral parameters for actual earthquake events show that this method gives much smaller rms errors than the existing methods do.o.

• Proceedings of the KIPE Conference
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• 2018.07a
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• pp.132-134
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• 2018

본 논문은 태양광발전 시스템에서 P&O 방식 기반의 제어 기법인 duty 제어와 전류 제어 방식의 최대전력점 추종특성을 동일모드 조건에서 비교하였으며, 시뮬레이션 및 실험을 통해 검증하였다. Duty 제어 방식은 P-V 특성곡선을 이용하여 전력과 전압의 변화량을 통해 duty 증감을 결정함으로써 동작점을 결정한다. 이와 달리, 전류 제어 방식은 P-I 특성곡선을 이용하여 전력과 전류의 변화량을 통해 전류 지령치를 생성하고 비례-적분제어기를 통해 전류제어를 수행하여 동작점을 결정한다. 두 가지 제어 방식의 정확한 비교를 위해 등가의 ${\Delta}duty$ 및 ${\Delta}I_{ref}$의 값을 선정하여 모드 변화에 따른 ${\Delta}V$의 변화를 동일하게 맞추었다. DC - DC 부스트 컨버터를 이용하여 시뮬레이션과 실험에 두 제어 방식의 태양광발전 시스템을 구성하여 태양광 전압과 전류, 에너지 측면에서 특성을 비교하였다. 최대 전력점이 1.7kW인 특성곡선 조건 하에서, 시뮬레이션과 실험의 결과로 두 방식은 동일 MPPT 모드 시 동일한 동작점에 존재하며, 같은 값의 전력을 출력하여 동일한 성능의 효율을 보임을 검증하였다.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.38 no.3
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• pp.292-303
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• 2001

Object color can be determined by the characteristic of scene illuminant and surface. In this paper, perceived illumination effect is extended and with the highlight analysis, hybrid approach is proposed to estimate the illuminant chromaticity. The perceived illumination approach provides a stable candidate range for the estimation of illuminant chromaticity, however, the accuracy is slightly degraded depending on the image contents. The highlight approach does not depend on the image contents and provides an accurate solution of the scene illuminant chromaticity, however, it is difficult to determine the final solution among many cross-points. These two approaches are in effect mutually compensating. The solution from perceived illumination can be used as a starting point or as base information for the highlight approach to get the final solution.

• Journal of the Korean Operations Research and Management Science Society
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• v.1 no.1
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• pp.95-99
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• 1976

불확실성하에서 행동결정을 하지 않으면 안되는 상황에서 정보란 무엇이며 정보량과 정보가치는 의사결정에 어떤 역할을 하는가 정보와 주관적인 확률에 기초한 Bayes결정기준이 전통적인 의사결정기준에 비하여 우위성 등을 논하고자 함이 본논문의 주된 목적이다. 제1.2절에서는 결정문제의 구조, 불확실성과 그 측도에 관하여 언급하고 제3절에서는 전통적인 결정기준과 그 모순점을 예시하고 Bayes결정기준이란 무엇인가를 소개하여 제4절에서는 Bayes통계학에 기초한 정보량, 정보가치의 의사결정과의 관계등을 살펴보고자 한다.

• Proceedings of the Korea Crystallographic Association Conference
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• 2003.11a
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• pp.25-26
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• 2003

• Journal of Korea Entertainment Industry Association
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• v.15 no.7
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• pp.193-204
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• 2021

The purpose of this study was to investigate grit, career decision-making self-efficacy, career preparation behavior and job-seeking stress, and to identify the influencing factors on job-seeking stress of nursing students. Data were collected using questionnaires from 208 students who were 4th years in the nursing university in Gwangju, November 2020. The collected data was analyzed by descriptive statistics, pearson's correlation coefficient and stepwise multiple regression using IBM SPSS 21.0 program. The mean scores were as follows: grit, 3.21±0.50; career decision-making self-efficacy; 3.65±0.51, career preparation behavior; 2.57±0.48, job-seeking stress; 2.07±0.64. Job-seeking stress was found to have significant negative correlations with grit(r=-.308, p=.000) and career decision-making self-efficacy(r=-.336, p=.000). Job-seeking stress was found to have significant positive with career preparation behavior(r=.214, p=.002). The most influential factors influencing the job-seeking stress of nursing students were career decision-making self-efficacy(β=-.340, p=.000), career preparation behavior(β=.302, p=.000), grit(β=-.175, p=.010). and these factors explained 22.1% in job-seeking stress(F=20.605, p=.000). In conclusion, in order to control the job-seeking stress of nursing students, it is necessary to apply a program that improve the career decision-making self-efficacy and grit, and to practice career preparation behavior according to the individual level step by step.

• Korean Journal of Crystallography
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• v.20 no.1
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• pp.15-18
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• 2009

실격자(real lattice)에서 이차원적인 (hkl)면의 총 집합이 역격자(reciprocal lattice)에서 한 개의점(點)으로 나타내어지며 원점에서 이 역격자점을 이은 vector의 방향은 (hkl)면의 방향이다. 따라서 두 역격자 vectors간의 각도가 결정학적 두 면간의 각도이므로 이들 각도들을 계산해보면 역격자의 개념을 이해하는데 도움이 된다. 이 논문에서는 6개의 실격자 상수 a, b, c, $\alpha$, $\beta$, $\gamma$를 사용하여 두 결정학적 면 ($h_1k_1l_1$)과 ($h_2k_2l_2$)간의 각도를 계산하는 한 computer program 'InterplanarA'를 소개하였다.