http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
윤은숙(Yun, Eun-Suk),안지숙(An, Jisook) 한국산학기술학회 2014 한국산학기술학회논문지 Vol.15 No.10
본 연구는 지역사회 거주 노인의 신체기능과 낙상두려움간에 상호 어떻게 영향을 미치는가의 관계을 살펴보고자 시도하였다. 65세 이상 노인 460명을 대상으로, 연구기간은 2014년 1월 3일부터 3월 30일까지이며, 본 연구에 자발적으로 참여할 것을 동의한 노인에게 직접 설문지를 읽어주고 대상자가 대답하는 방식으로 조사하였다. 인구사회학적 특성과 낙상 에 관한 정보, 신체기능과 낙상두려움에 대하여 조사하였고 지난 1년동안 낙상을 경험한 노인은 139명(30.2%)으로 조사되었 다. 신체기능에서 한 발 들고 균형 잡고 서 있기, 협응성?유연성 검사, 보행능력 검사가 낙상두려움간에 유의한 상관관계가 있는 것으로 나타났다. 본 연구 변수의 회귀모형을 분석한 결과 유의한 것으로 나타났으며, 모형의 설명력은 16.9%이고 낙상 두려움에 가장 큰 영향을 미치는 요인은 앉았다 일어서기 검사, 보행능력 검사로 조사되었다. 본 연구는 낙상 예방을 위한 보다 효과적인 중재 프로그램 개발에 기여할 것으로 사료된다. The aim of this study was to determine the physical performance and fear of falls in the community dwelling elderly and to investigate how the factors were connected to one another. The data was collected between January 3rd and March 30th, 2014 from 460 elderly people, aged 65 or older, who agreed to participate in this study. The data was sampled among the elders’ assistants as a way of responding to the questionnaire after being read. The study scales were composed of the demographic characteristics, physical function and fear of falls. A total of 139 (30.2%) subjects had experienced a fall. The results showed a positive correlation with the chair rise, standing on the leg, pick up a penny from floor, timed up and go test, and fear of falls. Multiple linear regression analysis showed that a predictor of the fear of falls were chair rise and timed up and go test. A combination of physical performance accounted for 16.9% of the fear of fall. Based on the findings of this study, it is useful to more effectively develop fall prevention and intervention programs in a future study.
Kyengho Yun,Jisook Kang J-INSTITUTE 2022 International Journal of Crisis & Safety Vol.7 No.1
Purpose: The purpose of this study was to compare the effects of oxygen therapy on cardiac status and therapeutic outcomes after percutaneous coronary intervention (PCI) and to reduce unnecessary oxygen supply. Our intervention focused on reducing the six hours of oxygen therapy that was previously available to two hours. Method: A non-equivalent control group non-synchronized design was used. After IRB approval, we started experimental study. Total 42 patients participated in this study, 12 in the experimental group and 30 in the con-trol group. The experimental group received oxygen for 2 hours and the control group was compared to the experimental group by chart review of patients who maintained oxygen for 6 hours. We measured Ejection Fraction (EF) by Echo-cardiogram and Myocardial Condition by Myocardium SPECT. We also checked hospital days by reviewing medical chart. For the analysis, descriptive statistics, X2 test, and t-test were used for statistical analysis with SPSS 23.0 program. Results: The test in Myocardium SPECT showed no significant difference in Myocardial condition between the experimental group and the control group. Especially, ‘stress defect’ among the test items was significantly lower in the experimental group than in the control group (t=2.118, p=.040). In addition, there was no significant dif-ference in the hospital day in the experimental group and the control group(t=-0.341, p=.735). Conclusion: Therefore, it is recommend to maintain oxygen therapy for 2 hours reduced and compared previ-ous oxygen therapy protocol.
노치필터를 이용한 CMOS Selective 피드백 저잡음 증폭기
서미경(Mikyung Seo),윤지숙(Jisook Yun),한정원(Jungwon Han),탁지영(Jiyoung Tak),김혜원(Hyewon Kim),박성민(Sung Min Park) 大韓電子工學會 2009 電子工學會論文誌-SD (Semiconductor and devices) Vol.46 No.11
본 논문에서는 0.18㎛ CMOS 공정을 이용하여 다양한 무선통신 시스템 표준을 포함하는 Selective 피드백 저잡음 증폭기(SF-LNA)를 설계하였다. 노치필터를 이용하여 불필요한 주파수 대역은 저지시키고 원하는 주파수 대역만 통과시키는 주파수 응답을 얻었고, 측정 결과 820~960㎒와 1.57~2.5㎓ 주파수 대역에서 각각 13㏈ 및 11.5㏈의 전력이득과 -10㏈ 이하의 입력 및 출력 임피던스 매칭을 얻었다. 제작한 칩은 1.8V의 단일 전원전압으로부터 15㎽의 낮은 전력소모를 가지며, 1.17 x 1.0㎟의 칩 사이즈를 갖는다. In this paper, a selective feedback low-noise amplifier (LNA) has been realized in a 0.18㎛ CMOS technology to cover a number of wireless multi-standards. By exploiting notch filter, the SF-LNA demonstrates the measured results of the power gain (S21) of 11.5~13㏈ and the broadband input/output impedance matching of less than -10㏈ within the frequency bands of 820~960㎒ and 1.5~2.5㎓, respectively. The chip dissipates 15㎽ from a single 1.8V supply, and occupies the area of 1.17 x 1.0㎟.
( Sangeun Lee ),( Sujin Choi ),( Yun Jeong Lee ),( Jisook Kim ),( Sook-hyun Park ),( Eun Joo Lee ) 대한주산의학회 2020 Perinatology Vol.31 No.4
Objective: The purpose of this study was to analyze the clinical experience of amplitude-integrated electroencephalogram (aEEG) in the neonatal intensive care unit (NICU) and to evaluate the usefulness of the aEEG and to determine whether an EEG could help to identify high risk infants with later epilepsy. Methods: Clinical data of 200 newborn infants admitted to the NICU and monitored with aEEG were reviewed retrospectively. A single- or two-channel aEEG (electrode placement P3-P4 for single, C3-C4 and P3-P4 for two) was recorded continuously by using gold cups. Background activity was assessed based on voltage and pattern recognition methods. To assess for differences in later epilepsy among infants with abnormal versus normal results, chi-square test was employed with odd ratio. Results: Overall, 200 newborn infants were included. About half showed abnormal findings on aEEG monitoring with 34.5% abnormal background activity, 30.0% abnormal cyclicity, and 30.0% with seizures. The odd ratio for an abnormal trace on aEEG to predict later epilepsy was 7.9 (95% confidence interval; 2.8-22.0; P<0.001). Conclusion: aEEG monitoring is useful for cerebral monitoring in NICU. aEEG monitoring enabled to assess the cerebral integrity of infants by measuring background activities and detecting seizures and help to identify high-risk infant for later epilepsy.
서브샘플링 직접변환 수신기용 광대역 증폭기 및 High-Q 대역통과 필터
박정민(Jeongmin Park),윤지숙(Jisook Yun),서미경(Mikyung Seo),한정원(Jungwon Han),최부영(Booyoung Choi),박성민(Sung Min Park) 대한전자공학회 2008 電子工學會論文誌-SD (Semiconductor and devices) Vol.45 No.11
본 논문에서는 서브샘플링 기법을 이용한 직접변환 수신단에 이용할 수 있는 광대역 증폭기와 높은 Q-factor 값을 가지는 대역통과 필터(BPF) 회로를 0.18㎛ CMOS 공정을 이용하여 구현하였다. 광대역 증폭기는 5.4GHz의 대역폭 및 12㏈의 파워이득 특성을 가지며, 대역통과필터는 2.4㎓ Bluetooth 규격에서 동작할 수 있도록 설계하였다. RF 신호가 안테나를 통해 광대역 증폭기와 BPF를 통과한 후의 주파수응답 측정결과를 살펴보면, 2.34㎓에서 18.8㏈의 파워이득과 31㎒의 대역폭을 갖는다. 이는 대역통과 필터의 Q-factor 값이 75로써 매우 높은 선택도(selectivity) 특성을 나타낸다. 또한, 전체 칩은 8.6㏈의 noise-figure 특성과 대역폭 내에서 -12dB 이하의 입력 임피던스 매칭 (S11) 특성을 보이며, 전력소모는 1.8V 단일 전원전압으로부터 64.8㎽ 이고, 칩 면적은 1.0x1.0mm2 이다. In this paper, a cascade of a wideband amplifier and a high-Q bandpass filter (BPF) has been realized in a 0.18㎜ CMOS technology for the applications of subsampling direct-conversion receivers. The wideband amplifier is designed to obtain the -3㏈ bandwidth of 5.4㎓, and the high-Q BPF is designed to select a 2.4㎓ RF signal for the Bluetooth specifications. The measured results demonstrate 18.8dB power gain at 2.34㎓ with 31㎒ bandwidth, corresponding to the quality factor of 75. Also, it shows the noise figure (NF) of 8.6㏈, and the broadband input matching (S11) of less than -12㏈ within the bandwidth. The whole chip dissipates 64.8㎽ from a single 1.8V supply and occupies the area of 1.0x1.0mm2.
Hong, Sujin,Yi, Jisook,Lee, Ho-joon,Hahn, Seok,Lim, Yun-jung,Lee, Yedaun,Shin, Kyong Jin Korean Society of Magnetic Resonance in Medicine 2021 Investigative Magnetic Resonance Imaging Vol.25 No.3
Anti-myelin oligodendrocyte glycoprotein (anti-MOG) syndrome is an immune-mediated inflammatory condition of the central nervous system, which usually involves spinal cord and optic nerves. Herein, we studied the case of a 57-year-old female patient who presented with acute/subacute symptoms of sphincter dysfunction, paraparesis, and ocular pain. The patient was diagnosed with anti-MOG syndrome with findings resembling snake-eye appearance (SEA), characterized by nearly symmetrical round high signal intensity lesions located at anterior horns (gray matter) on T2-weighted image.