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김강토,남주희,박규병,방희정,임지훈,김지혁 한국지역사회건강관리협회 대한건강과학학회 2021 대한건강과학학회지 Vol.18 No.1
PURPOSE : The purpose of this study is to find out the correlation between academic stress and sleep disorders among college students, and list the factors that reduce academic stress. METHOD : This study was conducted with 316 college students in the 1st, 2nd, and 3rd grades enrolled in the Gyeongnam region. The study period is from October 12, 2020 to October 23, 2020, and there were a total of 316 questionnaires distributed to the study, aimed at those who explained the purpose and purpose of this study to the subject and expressed their intention to participate in it. Implemented. RESULT : The level of stress according to academic stress was 14.56%(46 people) in the health group, 63.60%(201 people) in the latent group, and 21.83%(69 people) in the high-risk stress group. Most of the subjects belonged to the latent group. Normal 0%(0 persons), moderate sleep disorder 92.72(293 persons), severe sleep disorder 7.28%(23 persons). None of the subjects were normal, and most of them had moderate sleep difficulties. CONCLUSION : In the sub-factors of academic stress, study stress was the highest, and in the correlation with sleep disorders, class stress was the highest, and all sub-factors of academic stress showed positive correlations with sleep disorders. If the causes of academic stress, measures to reduce academic stress, and measures to improve sleep quality suggested in this study are developed, it is expected that the academic stress and sleep quality of college students can be improved and improved.
김강토,김지혁,남주희,박규병,방희정,임지훈 한국지역사회건강관리협회 대한건강과학학회 2020 대한건강과학학회지 Vol.17 No.1
PURPOSE : In this study, we would like to find out how to mediate between stroke patients and walk efficiently through prior research. METHOD : The literature review provides information on stroke and presents the type of gait training that is most effective in training stroke. RESULT&CONCLUSION : When we look at this paper, In the front, rear, and side walk training, it was more effective in the rear and side walk than in the front walk training, and the training method that introduced various methods was more effective than in the general gait training.
심덕선,전진석,김강토 제어·로봇·시스템학회 2017 International Journal of Control, Automation, and Vol.15 No.6
Galileo is the new European Global Navigation Satellite System (GNSS), similar to the GPS of theUnited States and GLONASS of Russia. Galileo- and GPS-modernized signals use the binary offset carrier (BOC)modulation to use the same frequencies for their compatibility. Galileo E1 OS (open-service) signal uses the CBOC(composite BOC) modulation, which produces the ambiguity problem in the acquisition process because of themultiple side-peaks in the correlation functions. This paper proposes new delay-and-multiply (DM) acquisitionmethods to eliminate the ambiguity and proves that the resulting correlation functions of the decision variableshave a triangular shape as observed in the PN code of the legacy GPS L1 signal. The noise characteristics andperformances of the proposed DM methods are theoretically analyzed and compared with the conventional method.