• 한국도로학회논문집
• /
• 제15권6호
• /
• pp.93-101
• /
• 2013

PURPOSES : The rumble strip installed at the highway near the tollgate has the purpose to reduce the vehicle velocity or prevent sleepiness by awakening people to the danger. These rumble strip has different vibration decibel from the rumble strip shapes, resulting in some fatigue damage to human because a driver suffers from a lot of stress and displeasure. In this connection, the objective of this paper is to analyze the vibration decibel perceived by a driver in the vehicle under some conditions. METHODS : The vibration decibel conveyed from the tire can be analyzed. The frequency analysis methods were used according to DFT (Discrete Fourier Transform) analysis, FFT (Fast Fourier Transform) analysis, CPB (Constant Percentage Bandwidth) analysis. But the frequency analysis method in this paper is the 1/24 OCT(Octave) band analysis because of the convenience of the analysis and the overall vibration amplitude along the frequency. RESULTS : By using the results of the vibration decibel after analyzing the 1/24 OCT band analysis, these results can be compared from some conditions (e.g., rumble strip shape, uniform velocity of a vehicle, road condition, mass of a vehicle). As a result, the numerical values of decibel are not directly proportional to the vehicle velocity. CONCLUSIONS : At the condition that a vehicle is passing by the rumble strip, the value of a vibration decibel at the rumble strip of the cylinder shape is smaller than the rumble strip of rectangular shape regardless of the rumble strip depth and width. At the mass condition, the more a vehicle is massive, the more the vibration decibel increases. At the road condition, the vibration decibel at the wet road is smaller than the value at dry road condition.

• 한국학교보건학회지
• /
• 제28권1호
• /
• pp.1-9
• /
• 2015

Purpose: The purpose of this study is to examine the effect of sleep duration on suicidal ideation in Korean adolescents. Methods: This study used the data drawn from Korea Youth Risk Behavior Web-Based Survey in 2013. A total data of 63,301 adolescents were included in the analysis. Included variables were general characteristics, health status variables, hours of sleep, and suicidal ideation. For sample description weighted percentage and means were used. Rao-Scott ${\chi}^2$ test and simple and multiple logistic regression with dummy variables were conducted with use of SAS 9.2. Results: Among general characteristics and health status variables, gender, grade, school level, school achievement, family's economic status, living with parents, subjective health, happiness, stress, and feeling of despair were found to be significantly related to suicidal ideation. Rates of having suicidal ideation were 22.4% in the case of students with less than 5 hours of sleep and 12.9% in students with 8 or more hours of sleep. After controlling general characteristics and subjectively perceived variables, hours of sleep was still significantly related to suicidal ideation. That is, compared to adolescents with 8 hours or more of sleep, those with less than 5 hours of sleep showed significantly higher risk for having suicidal ideation (adjusted odds ratio: 1.20, p<.001). Conclusion: These findings suggest that short sleep has negative effects on psychological health in adolescents. Particularly, less than 5 hours of sleep has harmful effect on adolescents' increased risk for having suicidal ideation.

• 임상간호연구
• /
• 제25권3호
• /
• pp.251-264
• /
• 2019

Purpose: This study was a systematic review and meta-analysis to explore the factors related to quality of life in heart transplant recipients. Methods: To identify studies that suggested the factors related to the quality of life in heart transplant recipients, we searched the articles published from 1974 to November 2018 using Six databases, PubMed, CINAHL, EMBASE, Cochrane, KMBASE and RISS. A total of 22 studies were selected out of 5,234 for the systematic review and meta-analysis on the basis of the PRISMA flow. The quality of study was assessed by assessment tool form the NIH and meta-analysis was performed using the 'R 3.5.2' version to analyze the correlated effect sizes. Results: Factors related to quality of life in heart transplant recipients were categorized into six domains based on the health-related quality of life model introduced by Ferrans: individual, environmental, biological function, symptoms, functional status, and general health perception. In the meta-analysis, 34 factors were used and 17 factors having significant effect sizes were as follows: self-efficacy, demoralization, perceived control, current occupational status, age, marital status, health promotion life style in the individual characteristics; stress in environmental characteristics; physical function status, creatinine level, left ventricular ejection fraction (LVEF) in biological function; anxiety, depression, symptom frequency and distress in symptoms domain; coping, self-care compliance in functional status. Conclusion: The findings indicate that the multi-dimensional factors influencing the quality of life in heart transplant recipients and provide the evidence for developing effective interventions for improving the quality of life of recipients.

• 융합정보논문지
• /
• 제11권11호
• /
• pp.1-9
• /
• 2021

본 연구는 만 40세-64세의 중년 여성의 낙상에 영향을 주는 요인을 알아보고 낙상 예방 프로그램 개발에 기초자료로 활용하기 위하여 시도되었다. 연구방법은 2019년도 지역사회건강조사 자료를 이용하여 43,917명 중년 여성을 연구대상으로 낙상, 신체 건강, 정신건강 및 건강행태를 조사하였다. 대상자의 낙상에 영향을 미치는 요인을 알아보기 위하여 descriptive statistics, chi-square test, multiple logistic regression을 하였다. 연구 결과 중년 여성의 낙상 경험은 11.9%로 보고되었고 연령이 증가할수록, 배우자가 없는 여성에서 낙상을 많이 경험하였다. 높은 우울감과 지각된 스트레스, 당뇨병을 진단받은 경우, 폭음하는 여성에서 낙상 경험이 높게 나타났다. 중년 여성의 낙상을 감소시키기 위해서 본 연구에서 밝혀진 변수를 고려하여 다양한 간호 중재의 근거자료로 적용될 수 있을 것이다.

• 한국콘텐츠학회논문지
• /
• 제19권3호
• /
• pp.624-634
• /
• 2019

본 연구는 우리나라 청소년의 성경험과 그 영향요인을 파악하기 위하여 수행되었다. 연구방법으로는 2017년 청소년건강행태온라인 조사의 원시자료를 이용한 이차분석 연구로, 본 연구에서는 62,276명의 자료를 분석에 사용하였다. 자료 분석은 SPSS Win 23.0 프로그램을 이용하여 빈도분석, ${\chi}^2$-test, 로지스틱회귀분석을 실시하였다. 연구결과 남학생은 학년, 학업성적, 거주형태, 경제 상태, 우울감 경험, 스트레스 인지, 자살생각, 평생음주 경험, 평생흡연 경험, 약물 경험, 성교육 경험이 성경험에 영향을 미치는 요인으로 나타났고(p<.001), 여학생은 학년, 거주형태, 아버지 학력, 경제 상태, 우울감 경험, 자살생각, 평생음주 경험, 평생흡연 경험, 약물 경험, 성교육 경험이 성경험에 영향을 미치는 요인으로 나타났다(p<.001). 따라서 향후 청소년의 성경험 관련 요인을 반영한 효과적인 성문제 예방 교육과 프로그램 개발을 통해 임상에서나 지역사회 및 학교보건에서 접근할 수 있도록 돕는 방안이 필요하다.

• 문화기술의 융합
• /
• 제5권1호
• /
• pp.153-167
• /
• 2019

연구목적 : 본 연구는 중노년 1인가구의 건강관련 삶의 질에 영향을 미치는 요인을 파악하고자 제7차 1기 국민건강영양조사 원시자료를 이용한 2차 자료 분석을 수행하였다. 연구방법: 본 연구의 대상은 40세 이상의 1인 가구 497명이며, 40-64, 65세 이상으로 구분하였다, 자료분석은 SPSS 24 program을 이용하여 복합표본 통계를 실시하였으며, 기술통계, 단순회귀분석 및 위계적 다중회귀분석을 실시하였다. 연구결과 : 중년1인가구의 건강관련 삶의 질 영향요인은 활동제한여부, 우울, 신체활동실천여부, 평생 흡연량으로 57%의 설명력을 보였다. 남성노년 1인가구는 주관적 건강, 대사증후군, 활동제한여부, 스트레스 인지율로 44.8%, 여성노년 1인가구는 주관적 건강, 활동제한여부, 가구 소득으로 35.9%의 설명력을 보였다. 결론 : 따라서 위의 결과를 고려하여 중노년 1인가구의 삶의 질 향상을 위한 정책입안 및 중재프로그램 개발 및 적용이 필요하다.

• 문화기술의 융합
• /
• 제5권2호
• /
• pp.93-99
• /
• 2019

본 연구는 대학생의 학과만족도, 자아정체감, 지각된 스트레스와 대학생활 적응 정도를 알아보고, 대학생활 적응에 영향을 미치는 요인을 확인하기 위해 시도되었다. 대학교 신입생 210명을 연구대상으로 구조화된 설문지를 사용하였고, 자료분석은 SPSS/WIN22.0 프로그램으로 하였다. 대학생활적응과 학과만족도(r=.216, p<.001), 자아정체감(r=395, p<.001)은 유의한 상관관계를 보였고, 대학생활적응을 예측하는 모형의 통계적 유의성을 검정한 결과, F 통계값은 12.22, 유의확률은 .000으로 제변수들이 유의수준 0.1에서 대학생활적응을 유의하게 설명하고 있으며, 대학생활적응도를 44%가 제변수에 의해 설명되고 있다. 제변수들을 고려하여 대학생활적응 프로그램을 개발한다면, 대학생들의 적응능력 향상에 긍정적인 효과가 있을 것으로 기대된다.

• 한국산업보건학회지
• /
• 제30권4호
• /
• pp.364-375
• /
• 2020

Objectives: The purpose of this study is to suggest a direction for consumer-oriented curriculum development by analyzing the priorities of subjects and their preference for educational methods. Methods: The participants included 773 management supervisors and education practitioners in the workplace, and a survey was conducted from April 17 to August 30, 2019. Frequency analysis, t-test, Borich's Needs Analysis, and Locus for Focus Model analysis were performed using Microsoft Excel 2019 and IBM SPSS 21.0. Results: The highest perceived priorities for education subjects were as follows: ① 'CPR and First Aid Practice' and 'Occupational Disaster Prevention and First Aid Basics' in the manufacturing industry; and ② 'Emotional Labor and Job Stress Prevention', 'Occupational Disaster Prevention and First Aid basics, and 'Musculoskeletal Disorder Prevention' in the service industry. 'Collective education' was the most preferred method of education. 'School-type' was preferred for the seating arrangement, and the proper number of trainees was considered to be about 30. Respondents said the contents of the education was a top priority when they applied for education, and curriculum and appropriate textbooks should be considered in calculating the cost of education. Conclusions: Practical subjects and subjects related to major hazards by industry were required for management supervisor education. It was proposed in this study that the contents and operating methods of education be changed so that workers can easily comprehend essential subjects such as the Occupational Safety and Health Act. In conclusion, it is necessary to design the curriculum and apply educational methods suitable for each subject's characteristics in consideration of the priorities for subjects reflected in the needs of trainees.

• 보건행정학회지
• /
• 제31권1호
• /
• pp.56-64
• /
• 2021

Background: Despite the high life expectancy, the subjective health status of the elderly people in Korea is reported to be the lowest as compared to other age groups. The purpose of the conducted study was to identify the factors related to the subjective health status of elderly people aged over 65 in Korea. Methods: This study used data from the 7th Korea National Health and Nutrition Examination Survey (2016-2017) of the Korea Disease Control and Prevention Agency. The subjects of the study were selected to be 2,904 elderly people aged over 65. The factors that were selected related to subjective health status were socio-demographics, perceived diseases, health behaviors, and mental health. Results: As a result of the examination of the subjective health status according to the characteristics of the subjects of study, the subjective health status was high in males (β=0.144, p=0.011), urban dwellers (β=0.107, p=0.015), employed persons (β=0.139, p=0.001), college graduates (β=0.322, p<0.001), persons with high household income (β=0.226, p<0.001), persons without chronic disease, nonsmokers (β=0.146, p=0.009), drinkers (β=0.111, p=0.003), persons who practiced aerobic physical activity (β=0.150, p<0.001), persons without depression (β=0.286, p<0.001), and persons who rarely had stress (β=0.837, p<0.001). Conclusion: More attention should be paid to those with low subjective health to improve health for elderly people. Expanding policy supports are required for elderly people with low socioeconomic status, chronic disease or depression, or unhealthy behaviors (smoking or lack of physical activity).

• 한국정보통신학회논문지
• /
• 제23권11호
• /
• pp.1351-1356
• /
• 2019

본 연구는 빅데이터 플랫폼을 이용해 만성질환자에 따른 개인적 요인과 지역사회요인이 삶의 질에 미치는 영향을 알아보는데 목적이 있다. 연구방법은 2017년 지역사회건강조사 자료와 통계청 시군구별 2차 자료를 사용하였고, EQ-5D 지수와 개인요인 및 지역사회요인을 구분하여 다수준분석을 실시하였다. 연구결과 남자의 경우, 나이가 어릴수록, 학력이 높을수록, 월가구소득이 많을수록, 경제활동을 하는 경우, 스포츠 인프라가 많은 경우 삶의 질이 높았다. 또한 주관적 건강감이 나쁠수록, 스트레스가 많을수록 삶의 질이 낮았다. 향후 의료 빅데이터 분석을 위해 클라우드와 오픈소스를 활용할 수 있는 하드웨어에 독립적인 플랫폼 제공을 위한 연구가 지속되어야 할 것이다.