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서울시 임대아파트에 거주하는 일부 저소득 중장년의 만성질병별 건강행태 비교연구
양준모,박해모,이선동,Yang, Junmo,Park, Haemo,Lee, Sundong 대한예방한의학회 2014 대한예방한의학회지 Vol.18 No.2
Objective : To compare the differences in health behaviors by chronic diseases of middle-aged living in Seoul's low-income housing Method : Of the 1469 residents aged 35 to 60 living in low-income housing in Seoul's District A, 318 were equal probability of selection method selected. t-test, ANOVA, $x^2$, OR(95% CI, P-value) were selected to analyze the data, and the confidence interval was 5%. Results : There were no significant differences in all health behaviors by vascular and metabolic, But there was a statistically significant difference for gastrointestinal diseases caused by sleep hours(p=0.001), liver diseases caused by smoking, drinking and sleep hours(p=0.004, p=0.001, and p=0.033, respectively), musculoskeletal diseases caused by sleep hours and health exam(p=0.0000 and p=0.002, respectively). Also, statistically significant differences were found for tumors caused by sleep hours(p=0.004), depression by the sleep hours and health exam(p=0.001 and p=0.013, respectively), allergies by in sleep hours(p=0.004), thyroid diseases by smoking and health exam(p=0.013 and p=0.007, respectively). After adjusting for the confounding factors for diseases, OR was obtained for each health behavior. There were no statistically significant differences in all health behaviors for vascular, metabolic, and tumors. However, the OR for gastrointestinal diseases 4.10(1.63-10.36, 0.0028) and 2.96(1.05-8.41, 0.0041) at 5-7 and 7-9 sleep hours. The OR for liver diseases was 3.13(1.03-9.48, 0.0437) at 7-9 sleep hours, the OR values for musculoskeletal diseases were 2.91(1.23-6.88, 0.00149), and 4.46(1.68-11.86, 0.0027) at 5-7 and 7-9 sleep hours. OR for depression were 4.82(1.70-13.66, 0.0031) and 4.13(1.19-14.31, 0.0026) at 5-7 and 7-9 sleep hours. OR for allergy were 2.78(1.22-6.32, 0.0015) and 3.93(1.49-10.39, 0.0058) at 5-7 and 7-9 sleep hours. There were statistical significances for liver diseases for 1-2 times of health exam at 0.35(0.14-0.90, 0.00301), for liver diseases for 1-2 times of health exam at 0.35(0.14-0.90, 0.00301), for musculoskeletal diseases for 3-4 times of health exam at 0.26(0.09-0.79, 0.0175), for depression for 3-4 times of health exam at 0.17(0.04-0.66, 0.0106), for allergies for 1-2 times of health exam at 0.30(0.13-0.70, 0.0055), and for thyroid diseases for 1-2 times and annually of health exam at 0.07(0.01-0.60, 0.00154), 0.09(0.01-0.96, 0.0461). We known significant difference the health behaviors by the diseases. especially in sleep hours and health exam times Conclusion : Only sleep hours and health exam caused statistically significant differences in chronic diseases. but the sleep hours was postitively correlated with the risk of disease, while health exam were inversely related.
양준모,이상철,Yang, Junmo,Lee, Sangchul 한국항공운항학회 2021 한국항공운항학회지 Vol.29 No.2
In modern society, the use of small rotary-wing unmanned aerial vehicles such as drones is increasing. As the military considers tactics using drones, demand for drones is increasing. However, there is still no airworthiness certification standard for drones for safety. In this paper, we proposed airworthiness certification standards for small rotorcraft unmanned aerial vehicles based on CS-LURS in Europe and STANG-4703, 4738 (draft) of the North Atlantic Treaty Organization. In addition, airworthiness certification standards have been strengthened through the case of unmanned aerial vehicle accidents in operation by the Korean military. The airworthiness certification standards for small rotary-wing unmanned aerial vehicles will be supplemented through a demonstration project.
원격참조 (RR: Remote Reference) 기법과 신호잡음분리 (SNS: Signal Noise Separation) 기술을 이용한 용인 관측소의 지자기 전달함수 분석
양준모(Junmo Yang),이덕기(Duk-Kee Lee),권병두(Byung-Doo Kwon),류용규(Yong-Gyu Ryu),윤용훈() 대한자원환경지질학회 2005 자원환경지질 Vol.38 No.2
RR (Remote Reference) 과 SNS (Signal Noise Separation) 기법을 도입하여 용인과 이천에서 측정된 지자기 전달함수를 분석하였다. RR 기법은 측정 사이트와 동시에 기록되는 원격참조 자료를 사용하여 자기장의 비상관 잡음 (un-correlated noise) 을 제거하는 기법으로서 전달함수의 편향을 최소화한다. 한편 SNS 기법은 원격참조 자료가 잡음이 거의 없다는 가정을 바탕으로 신호에 의한 전달함수와 상관잡음(correlated noise) 에 의한 전달함수를 분리하는 기법으로서, 측정 사이트에 상관잡음이 지배적인 경우에도 신호에 의해 전달함수를 성공적으로 추정할 수 있다. 본 연구에서는 자료의 질이 양호하다고 판단되는 이천을 원격참조 자료로 사용하여, 용인에서의 전달함수를 분석하였다. RR 기법을 적용한 결과, 단일 로버스트 추정(Single robust estimation) 에서 나타났던 편향이 감소되었고, 주파수에 따른 전달함수의 연결성도 향상되었다. 잡음원에 대한 보다 정량적인 분석을 위해 SNS 기법을 적용한 결과, 주기 100 초이하에서 용인의 서쪽에 존재하는 잡음원의 존재를 확인하였다. 이러한 잡음원은 용인의 서쪽을 지나가는 국철, 고속 철도 등의 철도 시스템에 의한 것으로 생각된다. For an unbiased TF (Tansfer Function) estimations we investigate geomagnetic TF derived from ICHEON and YONGIN sites, employing RR (Remote Reference) and SNS (Signal Noise Separation) techniques. The RR technique, which requires synchronized field variations recorded at a clean remote site, is a reliable method to minimize the bias of TF by uncorrelated noises in magnetic channels. Meanwhile, SNS technique based on the assumption of noise-free remote data can improve the signal-noise level by separating signal TF and noise TF, which is successfully applied to the environments with strong correlated noises. In this study, TF at YONGIN is analyzed using geomagnetic data from ICHEON site as a remote reference, which seem to have somewhat better data quality. The application of RR technique reduces the bias of TF, which appears in single site robust estimation, and makes curves in the amplitude and phase of TF more smooth as frequency. Futhermore, in order to investigate noise source quantitatively, SNS technique is applied. The results of SNS suggest that dominant noise source seems to be located at western region of YONGIN. This noise source is considered to originate from railway system such as KTX and national subway, which passes through the west regions of YONGIN.