• 대한의용생체공학회:의공학회지
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• 제39권2호
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• pp.69-79
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• 2018

The present study proposes an algorithm that can discriminate between normal subjects and paroxysmal atrial fibrillation (PAF) patients, which is conducted using electrocardiogram (ECG) without PAF events. For this, time-domain features and random forest classifier are used. Time-domain features are obtained from Poincare plot, Lorenz plot of ${\delta}RR$ interval, and morphology analysis. Afterward, three features are selected in total through feature selection. PAF patients and normal subjects are classified using random forest. The classification result showed that sensitivity and specificity were 81.82% and 95.24% respectively, the positive predictive value and negative predictive value were 96.43% and 76.92% respectively, and accuracy was 87.04%. The proposed algorithm had an advantage in terms of the computation requirement compared to existing algorithm, so it has suggested applicability in the more efficient prediction of PAF.

• Annals of Clinical Neurophysiology
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• 제16권2호
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• pp.49-54
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• 2014

Heart rate variability is significantly associated with cardiovascular complications in various neurological disorders with cardiac impairment. Measures of spontaneous heart rate variability might be different from provocating tests of heart rate variability such as deep breathing and Valsava maneuver. Methods for analysis are divided into time domain methods and frequency domain methods. There are standard deviation of NN interval, standard deviation of average NN interval, root mean square of the successive differences, NN50, and pNN50 in time domain methods. Frequency domain bands can be divided into very low, low, and high frequency. Each variables are influenced by sympathetic and/or parasympathetic activity.

• Smart Structures and Systems
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• 제2권1호
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• pp.25-46
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• 2006

Aging wiring in buildings, aircraft and transportation systems, consumer products, industrial machinery, etc. is among the most significant potential causes of catastrophic failure and maintenance cost in these structures. Smart wire health monitoring can therefore have a substantial impact on the overall health monitoring of the system. Reflectometry is commonly used for locating faults on wire and cables. This paper compares Time domain reflectometry (TDR), frequency domain reflectometry (FDR), mixed signal reflectometry (MSR), sequence time domain reflectometry (STDR), spread spectrum time domain reflectometry (SSTDR) and capacitance sensors in terms of their accuracy, convenience, cost, size, and ease of use. Advantages and limitations of each method are outlined and evaluated for several types of aircraft cables. The results in this paper can be extrapolated to other types of wire and cable systems.

• 지역사회간호학회지
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• 제13권2호
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• pp.321-331
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• 2002

Purpose: The purpose of this study was to describe perceived family support, life satisfaction, and health promoting behavior (HPB), and to identify factors influencing HPB among the elderly. Method: Study participants were 165 elderly over 65 years of age who were living in C city, Korea. The instruments included the Family Support Scale developed by Kang, Life Satisfaction Scale developed by Choi, Health Promoting Behavior Scale designed by Walker, et al. The data were analyzed using the SAS program by t-test, ANOVA, Pearson correlation coefficients, and stepwise multiple regression. Results: 1. The scores for family support ranged from 11 to 55, with a mean score of 41.55. The scores for life satisfaction ranged from 0 to 40, with a mean of 22.02. The scores for HPB ranged from 40 to 160 with a mean score of 98.07. In the sub-dimensions of HPB, the participants showed the highest level of engagement in the nutrition domain, and the lowest level of engagement in the exercise domain. 2. Higher levels of family support and life satisfaction were correlated with more engagement in HPB. 3. The most influencing factor on HPB in the elderly was family support. accounting for 11% of the total variance in HPB. A combination of education level and types of living patterns accounted for 18% of the total variance in HPB. Life satisfaction accounted for 14% of the self-actualization domain, and 5% of the stress management domain, in the sub-dimensions of HPB. Conclusion: Perceived family support was identified as an important factor to predict HPB in the elderly. However, life satisfaction was identified as only partially influencing HPB among the elderly.

• 융합보안논문지
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• 제13권4호
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• pp.11-17
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• 2013

모든 u-헬스케어 시스템은 보안 취약점을 가지고 있다. 이 취약점은 로컬(local) 또는 네트워크(network) 상에서 잠재적인 위험이 된다. 의료정보 기술의 Smart 환경, Ad-hoc networking, 무선통신 환경은, u-헬스케어 보안 취약성을 증가시키는 주요 요인이다. u-헬스케어 의료정보시스템 도메인은 사용자단말 구간, 공중통신망 인프라구간, 네트워킹구간, 인트라넷구간으로 구분된다. 의료정보시스템 도메인별을 구분하여 취약점을 평가하는 이유는 도메인별로 취약점에 대한 대처방법이 다르기 때문이다. u-헬스케어시스템 5단계의 보안위험도 평가체계는 도메인별 보안취약성 진단체계를 설계하여 보안대책을 강구하기 위해 필요하다. 제안하는 모델을 사용할 경우 현재까지 막연하게 진행 되어온 USN 기반 의료정보네트워크 보안취약성 진단대책을 좀 더 체계적으로 수행할 수 있는 모형을 제공한다.

• 한국정보전자통신기술학회논문지
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• 제13권6호
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• pp.511-522
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• 2020

본 논문은 공공영역에서 의료 마이데이터 사업을 추진하기 위한 생태계 구축 방안을 도출하는 것을 목적으로 하였다. 이를 위해 먼저 마이데이터 사업의 유형을 비즈니스 도메인별, 주체별, 목적별, 방식별로 구분하고, 이를 바탕으로 국내 및 해외에서 추진되고 있는 마이데이터 사업을 유형별로 분석하였다. 그 후 분석 결과를 바탕으로 시나리오 기법을 통해 공공영역에서 추진할 수 있는 마이데이터 사업의 시나리오를 도출하고, 각 시나리오를 추진하기 위한 주체별 역할 및 주요 이슈를 파악하여 생태계 구성 주체별 전략방향을 제시하였다. 이와 같은 시도는 민감 정보를 대상으로 하여 민간에서 시작하기에 이슈가 많은 의료 마이데이터 사업이 국내에 정착하기 위해 공공영역에서 주도적으로 할 수 있는 역할이 무엇인지를 드러내는데 1차적 의의가 있다. 이를 통해 국내에서 생태계가 구축되기 위해 예상되는 이슈를 파악하고, 향후 마이 데이터 사업이 국내에서 올바른 방향으로 추진될 수 있는 방향성을 제시하기 위한 논의의 초석이 될 것으로 기대한다.

• 지역사회간호학회지
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• 제15권1호
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• pp.145-154
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• 2004

Purpose: This study was performed to identify the extent of flood damage, the quality of life(QOL) and their relationships to flood victims. Method: The subjects of this study were 248(men 100, women 148) who live around seven areas in K province impacted by Typhoon Rusa. Data was collected between February 25 and March 21, 2003 by structured questionnaires. The instruments were composed of two parts. The extent of flood damage were the impacts of daily living by revised from Ginexi et aI.(2000). QOL was used to WHOQOL BREF Korean Version by Min et al.(2002). The SPSS program was used for its descriptive, reliability, and correlation analysis. Result: The means of the extent of flood damage were: daily living 1.88, economy 4.60, and health 3.75. The mean of total QOL was 2.95: social domain 3.29, overall satisfaction 3.09, physical domain 3.06, psychological domain 2.95, and environmental domain 2.68. The negative correlations were between the Impact of daily living and Total QOL(r=-.143, p<.05), Physical QOL(r=-.220, p<.01) and Overall satisfaction (r=-141, p<.05). Conclusion: This study has learned that the impact of the flood had negative effects on the flood victims quality of life, and the difficulties they faced in their daily lives. Further research will be needed to explore influencing factors on QOL in disaster victims.

• Molecules and Cells
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• 제37권4호
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• pp.286-294
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• 2014

Mammalian polo-like kinase 1 (Plk1) has been studied intensively as a key regulator of various cell cycle events that are critical for proper M-phase progression. The polobox domain (PBD) present in Plk1's C-terminal noncatalytic region has been shown to play a central role in targeting the N-terminal kinase domain of Plk1 to specific subcellular locations. Subsequent studies reveal that PBD binds to a phosphorylated motif generated by one of the two mechanisms - self-priming by Plk1 itself or non-self-priming by a Pro-directed kinase, such as Cdc2. Here, we comparatively review the differences in the biochemical steps of these mechanisms and discuss their physiological significance. Considering the diverse functions of Plk1 during the cell cycle, a better understanding of how the catalytic activity of Plk1 functions in concert with its cisacting PBD and how this coordinated process is intricately regulated to promote Plk1 functions will be important for providing new insights into different mechanisms underlying various Plk1-mediated biological events that occur at the multiple stages of the cell cycle.

• 지역사회간호학회지
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• 제12권1호
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• pp.71-80
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• 2001

In an attempt to measure the needs of sexuality education according to sex. grade. type of school. this study was carried out. For this study, the questionnaires were given to 600 students of 4 high-schools in Seoul from March to April. 1999. Students never being received sexuality education were 32.5%. Even though in students being received sex education, the answer of being very instructive was only 2.2%. The needs of sexuality education in boy-student was high in sexual behavior and relationship domain as compared with the girl-student, especially high in masturbation and sexual dysfunction. In girl-student, the needs of sexuality education were high in abortion. sexual damage. In third-grade, the needs of sexuality education were high in personal skill domain as compared with the first and second-grade. And the second-grade's needs were high in sexual behavior domain. In academic school students, the needs of sexuality education were high in sexual behavior and sexual health domain as compared with vocational school. In conclusion, a variety of systematic sex education programs suitable for each characteristic of adolescence should be in need of being developed to the base on the sex educational needs of the students.

• 한국간호교육학회지
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• 제27권1호
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• pp.68-79
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• 2021

Purpose: This study aimed to identify the educational needs of nurses and nursing students for the development of a simulation module of home visiting care for frail, elderly people. Methods: Focus group interviews were conducted with 15 home visiting nurses working in public health centers and 14 nursing students who experienced home visiting from September 10 to October 10, 2018. Results: Bloom's taxonomy of learning objectives, namely, cognitive, affective, and psychomotor domains was used as a framework for data analysis. The defined educational needs for each domain were as follows: "understanding frail, elderly people" for the cognitive domain; "intervention for mental health" and "building a therapeutic relationship" for the affective domain; and "nursing skills", "health education for healthy lifestyles", "referral to the community resource connection", "protection for visiting nurses" for the psychomotor domain. Conclusion: Based on the findings of this study, a simulation module of home visiting care for frail, elderly people can be developed and used for nursing students and nurses to strengthen the capacity for home visiting care.