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김용래,이상철,김정래,Yongrae Kim,Sang-Cherl Lee,Jeongrae Kim 항법시스템학회 2024 Journal of Positioning, Navigation, and Timing Vol.13 No.2
The GEO-KOMPSAT-2A (GK2A) satellite, which was launched in December 2018, carries weather observation payloads and uses the image navigation and registration system to calibrate the observation images. The calibration system requires accurate orbit prediction data and depends on the accuracy of the orbit determination accuracy. In order to find a possible way to improve the current orbit determination accuracy of the GK2A flight dynamic subsystem module, orbit determination software was developed to independently evaluate the orbit determination accuracy. A comprehensive satellite dynamic model is applied for a batch-type least squares filter. When determining the orbit, thrust firing during station-keeping maneuvers and wheel-off loading maneuvers is taken into account. One month of GK2A ranging data were processed to estimate the satellite position on a daily basis. The orbit determination error was evaluated by comparing estimates during overlapping estimation intervals.
김용래,김태은 홍익대학교 2002 敎育硏究論叢 Vol.- No.19
The purpose of this study was to conceptualize the `Emotional Intelligence' and the 'Self-Concept' through an analysis of the related literature. and to find out the relationships between secondary school learners' emotional intelligence(EI) and self-concept(SC). And in order to achieve the purpose of this study analysed the related literatures and the subjects were sampled voluntarily 320 middle and high school learners in Seoul and other areas. The scales/instruments used for data collection were 「Emotional Intelligence Scale」 (Moon, Yong-Lin, 1996) and 「Self-Concept Scale] (Kim, Yong-Rae, 1995), the collected data processing was performed by SPSS/PC+ program, and analysed zero-order correlation between two variables and multiple regression, and all statistic value (r, R^2, R^2ch, andβ) were tested by F-test and t-test at the significant level of p < .05. As for the major contents of the findings in this study were as follows: First, "Self-concept is the level or degree of the evaluative attitudes and beliefs about 'the self' based feelings and views that was formed through interaction between self and significant others and various experiences in environment/situation" Second, "Emotional intelligence is multifactorial array of interrelated emotional, personal, and social abilities - the ability to accurately perceive and appraise self, to be aware of and understand self-emotions, to effectively manage self-emotions, to control self-emotions, to adapt and adjust self-feelings and thoughts to new situations, to solve self-personal and interpersonal problems, to be aware of and understand others emotions, and to relate well others". And addition to these abilities, emotional intelligence may be include following the abilities - the ability to be positive and to look at the brighter side of life, to feel content with self, others, and life in general, to be self-reliant and free of emotional dependency on others, to identify with and feel part of our social groups, and to achieve goals and actualize self-potential. Third, the correlation between learners 'emotional intelligence' and 'self-concept' was relatively in meaningful positive relationships. Learners nonacademic self-concept was more influence on emotional intelligence than academic self-concept. Personality self-concept and family self-concept among nonacademic self-concept subfactors influenced on emotional intelligence and its subfactors respectively. And the personality self-concept was in meaningful higher power of influence on the emotional intelligence than the family self-concept.
[이슈] 저탄소와 그린카 - 차세대 저탄소 친환경 대중교통 수단의 도입 필요
김용래,Kim, Yong-Rae 대한석유협회 2014 석유와 에너지 Vol.292 No.-
환경부에서는 1990년대 말경 대기오염 문제를 해결하기 위한 방안으로서 디젤 버스를 CNG 버스로 대체하고자 CNG 탱크 추가 등으로 가격이 비싼 CNG 버스에 대하여 보조금을 지급하고 CNG 충전 인프라를 구축하는 등의 지원정책을 실시하여, 현재 국내에서 운행하는 버스는 일부 소도시를 제외하면 대부분 CNG 버스로 대체되었다. 이러한 CNG 버스 정책으로 인하여 당시만 해도 매연 배출이 심하던 디젤 버스로 인한 공해물질이 줄어들고 대기질이 어느 정도 개선된 효과를 거두었다. 최근들어 환경에 대한 중요 이슈의 개념이 변화하고 있으며 자동차 기술도 새로운 변모를 보여주고 있는 것이 현실이기 때문에 CNG 버스만으로 운영되는 정책이 향후에도 계속 유지가 되어야 할지 다시 한번 생각해보아야 할 필요가 있다.
김용래,김치년,노재훈 한국산업위생학회 2001 한국산업보건학회지 Vol.11 No.1
Chromium exposure can be in the forms of environmental pollution and occupational exposure. The harmful effects of chromium on the body greatly differ depending on its valence or solubility. Accordingly, the recommended permissible exposure limit for each chromium compound is different. This study investigated the increase or decrease of distribution and excretion of total chromium exposed simultaneously the soluble Cr+6 and Cr+3 compounds. There were no difference of total chromium concentration in plasma, red bloods cells, urine, organs between simul-taneously injected and individually injected soluble Cr+6 and Cr+3 compounds. The chromium clearances in urine also showed that there were two phases in the two groups. In the first phase, biological half lives of the total chromium of the two groups have been similar within 24hr., but in the second phase, biological half life of the group injected simultane-ously was 62.7 hr. and was less than that of the other group's 188.3 hr. The average concentration of total chro- mium in plasma was same with the control, and that of RBCs was 0.218 n ㏖/㎖ and was slightly increased in comparison with 0.121 n ㏖/㎖ of the control, which was not statistically significant. As a result, there were no differences of distribution and excretion of chromium between the group exposed sim-ultaneously and the other group exposed separately the soluble Cr+6 and Cr+3 compounds. The biological half life of chromium of the former group in urine was less than that of the other group.