• Title/Summary/Keyword: T-test analysis

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Predicting Sensitivity of Motion Sickness using by Pattern of Cardinal Gaze Position (기본 주시눈 위치의 패턴을 이용한 영상멀미의 민감도 예측)

  • Park, Sangin;Lee, Dong Won;Mun, Sungchul;Whang, Mincheol
    • Journal of the Korea Convergence Society
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    • v.9 no.11
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    • pp.227-235
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    • 2018
  • The aim of this study is to predict the sensitivity of motion sickness (MS) using pattern of cardinal gaze position (CGP) before experiencing the virtual reality (VR) content. Twenty volunteers of both genders (8 females, mean age $28.42{\pm}3.17$) participated in this experiment. They was required to measure the pattern of CGP for 5 minute, and then watched VR content for 15 minute. After watching VR content, subjective experience for MS reported from participants using by 'Simulator Sickness Questionnaire (SSQ)'. Statistical significance between CGP and SSQ score were confirmed using Pearson correlation analysis and independent t-test, and prediction model was extracted from multiple regression model. PCPA & PCPR indicators from CGP revealed significantly difference and strong or moderate positive correlation with SSQ score. Extracted prediction model was tested using correlation coefficient and mean error, SSQ score between subjective rating and prediction model showed strong positive correlation and low difference.

Relationship of Emotional intelligence, Self-leadership and Professional Quality of Life on Nurses (간호사의 감성지능, 셀프리더십, 전문직 삶의 질과의 관계)

  • Kim, Yo-Na
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.8
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    • pp.531-538
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    • 2019
  • The Purpose of This Study was to Identify The Relation of Emotional Intelligence, Self-leadership, Professional Quality of Life among Clinical Nurses. Participants were 197 Nurses Drawn from a General Hospital in Busan, Ulsan, & Gyungnam. Mean, Standard Deviation, Independent t-test, One way ANOVA and Correlation with SPSS/Win 23.0 Program were Used for Data Analysis. The Mean score Emotional Intelligence was 4.68/7, Self-leadership was 3.35/5. Professional Quality of Life was 2.98/5. Professional Quality of life is Consisted of 3 Subcategories as Compassion Satisfaction, Secondary Traumatic Stress and Burn out. 19.8% of The Participants Reported a High ProQOL (Compassion Satisfaction more than 75%, Burn out less than 25% & Secondary Traumatic Stress less than 25%). Compassion Satisfaction was Positively Correlated Emotional Intelligence and Self-leadership. Burn out was Negatively Correlated Emotional Intelligence and Self-leadership. Emotional Intelligence was Positively Correlated Self-leadership. On the Basis of Result, Program Development are Required to Improve Compassion Satisfaction, Emotional Intelligence and Self-leadership on Clinical Nurses.

A Study on the Effect Analysis and Improvement of Cardiopulmonary Resuscitation on Life-rafts (구명뗏목에서의 비상대응 심폐소생술의 효과 분석 및 개선에 관한 연구)

  • Lee, Chang-Woo
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.25 no.4
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    • pp.433-440
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    • 2019
  • Offshore working environments such as ships, offshore oil and gas plants, and offshore wind turbines are isolated and directly exposed to rough seas, which pose high risks of safety accidents. Therefore, all workers in offshore plants should be able to cope with emergency situations and must be qualified according to relevant laws and regulations such as the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW Convention) and Offshore Petroleum Industry Training Organization (OPITO) standards. In particular, marine workers should be able to perform cardiopulmonary resuscitation (CPR) in isolated locations or enclosed and confined spaces such as those in life-boats, life-rafts, rescue-boats, etc. Because the floor material is made of rubber, it may be difficult to perform chest compressions in life-rafts used to escape from emergency situations in ships or offshore plants. Chest compressions performed on life-rafts may reduce the accuracy of CPR and increase fatigue for those providing aid. To measure the accuracy and fatigue of those performing CPR in life-rafts, 15 experimenters with more than five years of experience as first aid instructors were exposed to different CPR environments in a marine safety training center equipped with an artificial wave generator. The results showed that the accuracy of CPR in the classroom was 99.6 %, but that in various life-raft environments was only 84 %. T-verification of the two sites confirmed the reduced accuracy of CPR performed on life-rafts. CPR on life-rafts should be performed in groups of two and with the use of automated chest compression devices.

Analysis of Factors Influencing Burnout of Nurses in Long-term Care Hospitals Based on Job Demand -Resource Model (직무요구-자원모형을 기반으로 한 요양병원 간호사의 소진에 대한 영향요인 분석)

  • Yang, Eun-Ok;Gu, Mee-Ock
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.4
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    • pp.137-148
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    • 2019
  • This study was conducted to investigate the factors influencing burnout of nurses in long-term care hospitals based on the expanded JD-R model (Xanthopoulou et al, 2007). Participants were 167 nurses who worked in long-term care hospitals. The instruments used in this study were the Maslach Burnout Inventory, Copenhagen Psycho-social Questionnaire version II, Connor-Davidson Resilience Scale and the instrument developed by Thomas and Ganster (1995). Data were collected from August 25 to September 6, 2018 and analyzed based on frequency, t-tests, ANOVA, Pearson's correlation, and hierarchical regression using the SPSS WIN 23.0 program. The results were as follows: Nurses' burnout in long-term care hospitals was positively correlated with job demands (r=.24, p=.002) and negatively correlated with resilience (r=-.43, p<.001) and social support (r=-.41, p<.001). Factors influencing the level of burnout were resilience (${\beta}=-.28$, p<.001), social support (${\beta}=-.20$, p=.016), and job demands (${\beta}=.17$, p=.016) ), which together explained 32.0% of the total variance in burnout. Therefore, we strongly recommend interventions that reduce job demands and enhance resilience and social support to prevent and reduce the burnout of nurses in long-term care hospitals.

Predictors of Intention to Work among People with Disabilities who Maintain Economic Inactivity (비경제활동 유지 장애인의 취업의사 예측변인 탐색)

  • An, Yeji;Ji, Eun
    • 재활복지
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    • v.21 no.3
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    • pp.65-84
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    • 2017
  • This study identified predictors of intention to work among people with disabilities who maintain economic inactivity for two successive years by analyzing a total of 2,255 Participants in the 2014 data of the Panel Survey of Employment for the Disabled (PSED) with through $X^2$, t test, logistic regression. To explore factors affecting intention to work among people with disabilities who maintain economic inactivity, this study hypothesized the effectiveness of variables of demographic, disability, human resources, psycho-social factors based on previous studies. The analysis showed that male, spouse-being, low income status out of demographic variables were related to high probability of having intention to work among people with disabilities who maintain economic inactivity. In case of disability variables, experiencing disability-related discrimination significantly predicted the probability of having intention to work. However, the relationship between disability-related discrimination experiences and high intention to work needs to be viewed as correlated rather than cause-and-effect.In addition, literacy related to computer use/English proficiency/interpersonal and adaptation skills(human resources), experiences of vocational rehabilitation services (human resources), self-esteem (psycho-social) significantly predicted the probability of having intention to work among people with disabilities who maintained economic inactivity. Based on these results, support services for females with disabilities, effective rehabilitation programs of improving literacy related to computer use/English proficiency/interpersonal and adaptation skills and self-esteem, general expansion of vocational rehabilitation services for people with disabilities are suggested.

Cross Calibration of Dual Energy X-ray Absorptiometry Equipment for Diagnosis of Osteoporosis: between Domestic Manufacturers and Global Manufacturers (골밀도 장치의 교차분석 ; 국내 제조사와 해외 제조사 비교)

  • Kim, Jung-Su
    • Journal of the Korean Society of Radiology
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    • v.12 no.7
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    • pp.833-844
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    • 2018
  • Dual energy X-ray absorptiometry is mainly used as an X-ray test method. For equipment manufactured GE and Hologic, cross-calibration analyses (CCA) of machines from the same manufacturer and between units from different manufacturers have been conducted, but the CCA of equipment manufactured in Korea are inadequate. Through CCA, we present a formula of the intersections between the Korean medical equipment company (KEC) with GE and Hologic manufactured DXA, and among the KEC DXA. The CCA was conducted for the European Spine Phantom on DXA from four KEC and three global medical equipment company (GEC) manufacturers. We compared bone mineral density (BMD) values and calculated the CCA equation by linear regression analysis. The standard-deviations (SD) of the BMD values were highest for the Dexxum T for the low, medium, and high spine, which were 0.030, 0.029, and 0.037, respectively. The smallest SD in the low and medium vertebrae were 0.005 and 0.004 for the Horizon Ci, respectively, and 0.005 for the Osteo Pro Max in the high vertebrae. Based on the intersection equations of the KEC DXA established in this study, CCA of various KEC DXA should be established for more accurate follow-up of BMD tests in clinical environments.

Empathy Recognition Method Using Synchronization of Heart Response (심장 반응 동기화를 이용한 공감 인식 방법)

  • Lee, Dong Won;Park, Sangin;Mun, Sungchul;Whang, Mincheol
    • Science of Emotion and Sensibility
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    • v.22 no.1
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    • pp.45-54
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    • 2019
  • Empathy has been observed to be pivotal in enhancing both social relations and the efficiency of task performance. Empathetic interaction has been shown to begin with individuals mirroring each other's facial expressions, vocal tone, actions, and so on. The internal responses of the cardiovascular activity of people engaged in empathetic interaction are also known to be synchronized. This study attempted to objectively and quantitatively define the rules of empathy with regard to the synchronization of cardiac rhythm between persons. Seventy-four subjects participated in the investigation and were paired to imitate the facial expressions of their partner. An electrocardiogram (ECG) measurement was taken as the participants conducted the task. Quantitative indicators were extracted from the heart rhythm pattern (HRP) and the heart rhythm coherence (HRC) to determine the difference of synchronization of heart rhythms between two individuals as they pertained to empathy. Statistical significance was confirmed by an independent sample t-test. The HRP and HRC correlation(r) between persons increased significantly with empathy in comparison to an interaction that was not empathetic. A difference of the standard deviation of NN intervals (SDNN) and the dominant peak frequency decreased. Therefore, significant parameters to evaluate empathy have been proposed through a step-wise discrimination analysis. Empathic interactions may thus be managed and monitored for high quality social interaction and communication.

The Effects of Melodic Percussion Playing Group Program on Team Cohesion and Team Efficacy of Youth Soccer Players (선율타악기 연주중심 집단프로그램이 유소년 축구선수의 팀응집력과 팀효능감에 미치는 효과)

  • Kim, Heejin;Moon, Soyoung
    • The Journal of the Korea Contents Association
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    • v.19 no.9
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    • pp.558-566
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    • 2019
  • The purpose of this study is to fine out whether melodic percussion playing group program affects the team cohesion and team efficacy of youth soccer players. In this study fifty seven middle school soccer players were participated. The participants were assigned to either a melodic percussion playing group or a control group. In order to identify the effectiveness of music program, assessments were conducted using the team cohesion and team efficacy scales before and after the program. The results of comparison analysis through t-test are as follows. First, in the posttest of team cohesion between groups, the experimental group showed a significant difference over the control group. In the pretest and posttest examinations within a experimental group, the group also showed a significant difference. Second, in the posttest of team efficacy between groups, the experimental group showed a significant difference over the control group. In the pretest and posttest examinations within a experimental group, the group also showed a significant difference. These results of this study suggest that melodic percussion playing group program may be an effective intervention tool to improve team cohesion and team efficacy of youth soccer players.

A Study on the Influence Factors of Health Promotion Behavior of Examinees Preparing for The Civil-Service Examination (공무원시험 준비 수험생들의 건강증진행위 영향요인에 관한 연구)

  • Kim, Yun-Su;Lee, Yu-Jin
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.5
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    • pp.275-284
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    • 2019
  • This study was conducted to evaluate the health promotion behavior level, health beliefs, and self-efficacy of individuals preparing for civil service examinations, as well as the main factors that influence their health promotion behavior. The study subjects were 290 individuals who were preparing for civil service examinations in Noryangjin, where there are a lot of private institutions that provide training for the examinations. Data were collected by questionnaire surveys conducted from December 1 to 19, 2017. With the use of SPSS ver. 23, descriptive statistics, t-tests, one-way ANOVA, correlation analysis, and stepwise multiple regression were conducted. On average, the score for health promotion behavior practice was $2.37{\pm}0.45points$, health beliefs $3.13{\pm}0.45points$, and self-efficacy $3.55{\pm}0.74points$. Health promotion behavior was significantly positively correlated with perceived severity and perceived benefits, which are sub factors of health beliefs (r=.60, p<.001; r=.55, p<.001), while it was significantly negatively correlated with perceived barriers, which are a sub factor of health beliefs (r=.32, p<.001). The factors that influenced health promotion behavior were perceived health condition and perceived barriers, and the explanatory power of health promotion behavior was 25.1% (F=13.58, p<.001). In general, respondents studied for the examinations for a long time and were under severe job pressure; accordingly, they need to have quality meals, regular exercise, and regular medical check-ups to enhance health promotion behavior to control their stress.

Mediating Effect of Career Preparation Behavior on Nursing Professionalism Related Factors of Nursing Students (간호대학생들의 간호전문직관 관련요인에서 진로준비행동의 매개효과)

  • Park, Hee-Sook;Choi, Dong-Sook;Kim, Hyo-Chun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.5
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    • pp.93-101
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    • 2019
  • This study was conducted to investigate the mediating effects of career preparation behavior on nursing professionalism related factors of nursing students. The subjects were 265 students in the first, second, third, and fourth grades of nursing schools in the Gyeongbuk area. Data were collected from May 7, 2018 to May 25, 2018 using structured questionnaires. Data were analyzed by t-tests, ANOVA, Pearson's correlation, and multiple regression analysis based on descriptive statistics (frequency, percentage, mean, standard deviation) using the SPSS 22.0 program. The results of this study showed that career identity and career attitude maturity have a partial mediation effect on career preparation behavior in relation to nursing professionalism. Career attitude maturity (${\beta}=.38$), career identity (${\beta}=.17$), and career preparation behavior (${\beta}=.14$) were significant factors affecting nursing professionalism and the explanatory power of these variables was 19%. Therefore, it is necessary to develop and apply educational methods to improve career preparation behaviors and enhance professionalism of nursing students. In addition, there is a need for follow-up research on the structural relationship between career preparation behaviors, which are concrete and practical actions related to nurse's careers, and how they affect other career-related variables.