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유남희(Nam-Hee Yoo),이상민(Sang Min Lee),구민성(Min-Seong Koo),전진용(Jin Yong Jun) 대한사회정신의학회 2017 사회정신의학 Vol.22 No.1
목 적 : 탈북민 여성들의 신체화 증상에 영향을 미치는 요인을 알아보고자 이 연구를 수행하였다. 방 법 : 국내 입국한 북한이탈주민 중 한국판 역학연구센터 우울척도(the Center for Epidemiologic Studies-Depression scale, CES-D) 21점 이상의 우울 고위험군 242명을 대상으로 한국판 역학연구센터 우울척도(the Center for Epidemiologic Studies-Depression scale, 이하 CES-D) 점수와 간이정신진단검사(Symptom Checklist-90-Revision) 신체화 차원(이하 SCL-90R-SOM) 점수를 측정하였으며, 신체화 증상에 영향을 미치는 변수들을 측정 후 이에 대한 다중회귀분석을 실시하였다. 결 과 : 다른 변수의 영향을 통제한 다중회귀분석 결과 CES-D 점수가 높아질수록(t=5.013, p<0.001), 연령이 높아질수록(t=2.167, p=0.033) 신체화 증상의 점수가 높았다. 결 론 : 이 연구는 신체화 증상을 보이는 탈북민을 이해하는데 도움을 줄 것으로 생각된다. Objectives : This study was designed for an analysis of the related factors of somatic symptoms in depressive North Korean Refugee Women. Methods : We measured the related factors with the Center for Epidemiologic Studies-Depression scale (CES-D) scores and Symptom Checklist-90-Revision (SCL-90R-SOM) scores in North Korean Refugee Women whose CES-D scores were over 21. We performed the multiple regression test in depressive North Korean Refugee Women. Results : CES-D scores (t=5.013, p<0.001) and age (t=2.167, p=0.033) were significantly correlated with SCL-90R-SOM scores. Conclusion : This study will be helpful to understand the North Korean Refugee Women who have somatic symptoms.
수확 후 LED와 UV-B 조사에 의한 아스파라거스 순의 항산화 기능 향상
유남희(Nam-Hee Yoo),정선균(Sun-Kyun Jung),이정애(Chong Ae Lee),최동근(Dong-Geun Choi),윤성중(Song Joong Yun) 한국원예학회 2017 원예과학기술지 Vol.35 No.2
Asparagus (Asparagus officinalis L.) spears were treated with white (color temperature 4,500 k), blue (peak 450 nm), and red (peak 660 nm) light-emitting diodes (LEDs) at a photosynthetic photon flux density (PPFD) of 200 μmol·m<SUP>-2</SUP>·s<SUP>-1</SUP> for 12 h, and UV-B (280 nm) at 0.5 kJ or 1.0 kJ to determine the effect on agronomic characteristics, antioxidant phytochemicals, and antioxidant activity. The fresh weight, length, and width of spears were not affected by light quality treatments. The free sugars and chlorophyll contents were increased by 9 and 41%, respectively in the UV-0.5 kJ treatments. Among the antioxidant phytochemicals (vitamin C, total phenol, rutin, and total flavonoid), vitamin C was most greatly affected by the light treatments. Vitamin C content was significantly increased in asparagus spears subjected to the white (114%), red (137%), and UV-0.5 kJ(127%) treatments compared to the control. By contrast, rutin, total phenol, and total flavonoid content were increased only in samples subjected to the red and UV-0.5 kJ treatment. Furthermore, antioxidant activity, as measured by DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity, increased in white, red, and UV-0.5 kJ treatments by about 43, 41, and 43%, respectively, compared to the control. These results suggest that postharvest treatment of asparagus spears with red light at 200 μmol·m<SUP>-2</SUP>·s<SUP>-1</SUP> for 12 h or with UV-B (280 nm) at 0.5 kJ could enhance the functional quality of the asparagus spears by increasing the content of phytochemicals like vitamin C, rutin, total phenolics, and total flavonoids.
개선된 자동 주파수 보정회로를 이용한 광대역 클록 발생기 설계
정상훈(Sang-Hun Jeong),유남희(Nam-Hee Yoo),조성익(Seong-Ik Cho) 대한전기학회 2011 전기학회논문지 Vol.60 No.2
In this paper, a wideband clock generator using novel Automatic frequency calibration(AFC) scheme is proposed. Wideband clock generator using AFC has the advantage of small VCO gain and wide frequency band. The conventional AFC compares whether the feedback frequency is faster or slower then the reference frequency. However, the proposed AFC can detect frequency difference between reference frequency with feedback frequency. So it can be reduced an operation time than conventional methods AFC. Conventional AFC goes to the initial code if the frequency step changed. This AFC, on the other hand, can a prior state code so it can approach a fast operation. In simulation results, the proposed clock generator is designed for DisplayPort using the CMOS ring-VCO. The VCO tuning range is 350㎒, and a VCO frequency is 270㎒. The lock time of clock generator is less then 3us at input reference frequency, 67.5㎒. The phase noise is -109dBC/Hz at 1MHz offset from the center frequency. and power consumption is 10.1㎽ at 1.8V supply and layout area is 0.384㎟.
새로운 구조의 Tunable 4차 SC Bandpass Sigma-Delta 변조기
김재붕(Jae-Bung Kim),유남희(Nam-Hee Yoo),조성익(Seong-Ik Cho) 대한전기학회 2011 전기학회논문지 Vol.60 No.2
Tunable SC(Switched Capacitor) bandpass Σ-Δ(Sigma-Delta) modulator used in wireless system receiver occurs a signal attenuation according to tuning of center frequency in signal bandwidth. In this paper, tunable bandpass 4th order SC bandpass Σ-Δ modulator with novel structure is proposed for rejection of signal attenuation in signal bandwidth. The existing structure uses a ten variable coefficient values for rejection of signal reduction in the modulator. But the proposed structure only use a two variable coefficient values for rejection of signal attenuation in the modulator. Also, an adder and comparator is replaced with a comparator having 4 inputs in the modulator. Therefore, the existing structure has one more OP-AMP. The purposed modulator was designed in 0.18 ㎛ CMOS technology. The resolution of the modulator within 310 ㎑ bandwidth and 40 ㎒ sampling frequency under 6.67 ㎒, 10 ㎒ and 13.33 ㎒ intermediate frequency are over 10 bit.