• Title/Summary/Keyword: Life Adjustment Factor

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Prediction of the Fatigue Life of Deep Groove Ball Bearing Under Radial and Moment Loads - Fatigue Life Tests and Proposal of the Life Adjustment Factors (반경방향과 모멘트하중 하에서의 깊은홈 베어링의 피로수명평가 - 수명시험 및 수명보정계수 제안)

  • 김완두;한동철
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.18 no.12
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    • pp.3149-3158
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    • 1994
  • In this paper, using the formulation of dynamic equivalent load considering the effects of moment load and the equation to estimate the cage rotational speed, the new life equation of deep groove ball bearing under radial and moment loads was proposed. Fatigue life test apparatus with the measuring equipment of shaft and cage speed was designed and developed to be capable of subjecting combined radial and moment load. Fatigue life tests were executed by sudden death test method and the reliability of fatigue lives was evaluated by Weibull distribution analysis. From the results of fatigue tests and analysis, the relationships between film parameters and life adjustment factors were acquired. And it was turned out that so as to estimate the effect of moment load on fatigue life, the life adjustment factor as well as the dynamic equivalent load must be taken into account.

The Effect of Communication Ability of Health-Related Majoring Students on College Life Adjustment (보건계열 대학생의 의사소통 능력이 대학 생활 적응에 미치는 영향)

  • Jnag, Cheul;Kim, Min-Ho
    • Journal of The Korean Society of Integrative Medicine
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    • v.10 no.2
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    • pp.95-104
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    • 2022
  • Purpose : This study aimed to investigate the effects of health science majors' communication skills on their adjustment to college life. Methods : The subjects were 336 college students majoring in health science at colleges located in Busan. The survey's questionnaire comprised 38 items, including 15 items for communication skills and 19 items for adjustment to college life. Results : In the gender-based comparison of communication skills and adjustment to college life, female students had better communication skills, with overall higher scores than male students for the understanding others and communication. In the age-based comparison of communication skills and adjustment to college life, students aged 21 to 22 showed the best communication skills, while students aged 18 to 20 exhibited the least communication skills. In terms of adjustment to college life, those aged 25 or older scored the highest, and those aged 21 to 22 scored the lowest. In the school-year-based comparison of communication skills and adjustment to college life, third- and first-year students showed the best and least communication skills, respectively. Overall, third- and fourth-year students were more adjusted at adjusting to college life than first- and second-year students. Third-year students also scored the highest in academic adjustment, whereas second-year students scored the lowest. In terms of relationships between the students' communication skills and their adjustment to college life, communication skills were positively correlated with the following subdomains: understanding of others, self-expression, and communication. Communication skills also showed a positive correlation with adjustment to the college environment, including personal-emotional adjustment. Conclusions : The present study found that communication skills did not significantly affect health science majors' adjustment to college life. However, given that communication skills are an essential factor for effective work performance and greater job satisfaction, it is recommended that colleges provide students with relevant education and experiences to help them enhance communication skills while in school.

The Effect of the Mother's Rearing Attitude and Mother-Child Relationship-as Perceived by the child on School Adjustment (아동이 지각한 어머니의 양육태도와 어머니-자녀관계가 학교생활적응에 미치는 영향)

  • Kim, Hye Gum
    • Journal of the Korean Home Economics Association
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    • v.50 no.6
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    • pp.65-75
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    • 2012
  • This study was to examine the effect of the mother's rearing attitude and mother-child relationship, as perceived by the child, on adjustment to school life. The present study investigated how the mother's rearing attitude and mother-child relationship, as perceived by the child, influence school life adjustment. The participants were 300 4th grade elementary school students (173 boys and 127 girls), in Seoul. The data were analyzed using Pearson's correlation and multiple regression, by SPSS 12.0 program. The results were as follows: 1) The child who perceived the mother's rearing attitude to be more rational and democratic, was more adaptive in school life. 2) The mother-child relationship that the child perceived, had a positive relationship with the school life adjustment of the child. The child who perceived the mother-child relationship more positively, was more adaptive in school life. 3) In relationship with the teacher and school class, the mother's democratic rearing attitude, as perceived by the child, was found to be the most affecting factor. In relationship with the classmates and school rules, the mother-child relationship, as perceived by the child, was found to be the most affecting factor.

An Evaluation on Quality of Field Trial Protocol using Pay Factor and Analysis of Fatigue Life (지불계수를 이용한 시험포장구간의 품질평가와 피로수명 분석)

  • Lee, Jae-Hack;Rhee, Suk-Keun;Kim, Seong-Min;Hwang, Sang-Min
    • International Journal of Highway Engineering
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    • v.11 no.4
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    • pp.133-142
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    • 2009
  • This research is performed to estimate quality of trial pavement for construction and analyze effect of fatigue life by using the pay factor. Specially, asphalt content which is difficult to control the pavement quality, is selected by pay adjustment standard factors and pay factor is calculated by asphalt content. This research is also analyzed to present relation of fatigue life according to asphalt content, to evaluate quality of the road pavement by calculating pay factor of sampling trial field mixture 2 times. This research confirms that it is different quality of road pavement according to pay factor changes. To analyze the fatigue life of pavement by using asphalt mixture for trial field. As a result, it is conformed that high pay factor could be high fatigue life of trial field. This means that pay factor using probability theory reflects road pavement fatigue life. Also, this study is included that beam fatigue test manufacturing specimen such as mixing type of plant which purvey asphalt mixture to trial field, compared with fatigue life of trial field. As a result, the fatigue life of specimen that is manufactured by mix type is higher than trial field specimen. This means that performance of road pavement can be reduced by gradation or other effects. Therefore, to exactly evaluate the quality of road pavement, pay factor should be calculated appling various pay adjustment standard factors such as gradation, air-void in U.S. states which is adopted pay adjustment.

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Relationship between Anxiety and Cellular Phone Addiction in Undergraduate Students: The Mediating Effect of Adjustment to College Life (대학생의 불안과 휴대폰 중독과의 관계: 대학생활적응의 매개효과)

  • Park, Yeoun-Hee;Jeong, Byeong-Goo
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.12
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    • pp.2771-2776
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    • 2012
  • The purpose of this study was to investigate an association between anxiety, cellular phone addiction and adjustment to college life in undergraduate students using structural equating model (SEM). This study was verify whether adjustment to college life mediated the relationship between anxiety and cellular phone addiction. Participants of this study were 479 undergraduate students in Gwangju city in accordance to convenience sampling. SPSS 15.0 was employed for descriptive statistics, Pearson correlation coefficient, calculation for cronbach's ${\alpha}$ coefficient, exploratory factor analysis. Also, AMOS 7.0 was employed for confirmative factor analysis and path analysis of casual relation among variables and effect. The results of this study can be summarized as follows. First, anxiety had a negative effect on adjustment to college life and adjustment to college life had a negative effect on cellular phone addiction. Second, anxiety had a positive effect on cellular phone addiction. Third, it was founded that adjustment to college life partially mediated the relationship between anxiety and cellular phone addiction.

A study on The elderly과s decision-making and life-adjustment in the family Its Relatied Variables (노인의 가정내 의사결정과 생활적응 관련변인)

  • 지금수;김현지
    • Journal of Family Resource Management and Policy Review
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    • v.3 no.2
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    • pp.61-76
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    • 1999
  • The purpose of this study is to investigate the degree of influence on the elderly’s life adjustment and decision making in the family. For these research tasks the data were collected through interview. the respondents were 296 of man and woman elderly who lived in JeonJu. It was analyzed by various statistical methods such as Frequency, Percentile, ANOVA, correlate, t-test, Multiple Regression Analysis. The finding of this study are as follows; 1) Decision-making of the elderly in family had significant differences I the area of sex, the sum of monthly personal expenses, satisfaction level of personal expenses, subjective economic level and self-esteem in the order named. 2) Elderly life-adjustment had significant differences in the area of the residential district, the present job, the situation of a apouse, religion, education, the sum of the monthly personal expenses, health, satisfaction level of personal expenses, subjective economics level and self-esteem. 3) When we observe relationship with the elderly decision-making in family and life-adjustment, relation decision-making in family and life-adjustment appeared positively. 4) Decision-making of the elderly in family had the significant differences according to the variables such as sex, the sum of monthly personal expenses, and self-esteem in the order named, and the most influential factor among them was sex. 5) Elderly life-adjustment had the significant differences according to the variables such as self-esteem, decision-making, religion, health, the sum of the monthly personal expenses, the residential district in the order named. The most influential factor was self-esteem and the explanary of those variables for the elderly life-adjustment was 55.1%.

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Factors Influencing Nursing Students' Adjustment to College Life (간호대학생의 대학생활 적응 영향요인)

  • Kim, Kyoung-Nam;Kim, Ju-Young;Kim, Hyeon-Jeong;Kim, Hee-Jeong;Moon, Yoo-bin;Moon, Hye-Jin;Park, Eon-Seol
    • Journal of Korean Clinical Health Science
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    • v.8 no.2
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    • pp.1417-1425
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    • 2020
  • Purpose: The purpose of this study was to check the stress, stress and coping ability of nursing college students and to identify factors that influence college life adjustment. Method: This study was a descriptive research study to confirm the correlation between stress, stress response, coping ability, and college life adaptation of nursing college students, and to analyze the factors that influence college life adjustment. The data collection period was from August 17 to 23, 2020, for one week, the researcher directly explains the purpose and purpose of the study to 221 nursing college students nationwide, and online surveys to those who have agreed to participate in the study. The collected data were analyzed using SPSS Win 20.0 program. Results: Adaptation to college was negatively correlated with stress (r=-.285, p<.001), stress response (r=-.258, p<.001), and coping ability (r=.512, p<.001) had a positive correlation. The most significant factor influencing the study subjects' adaptation to college life was coping ability (β=.473, p<.001), followed by stress (β=-.185, p=.002) in the order of The explanatory power of the factors affecting the subject's adaptation to college life was 28.9%. Conclusion: As a result of this study, it means that nursing students' adaptation to college life has less stress and stress response, and higher coping ability increases college life adaptation. The factor that influenced the adjustment to college life was the most significant factor, followed by stress. In order for nursing students to adjust to college life smoothly, it is thought that coping measures to reduce stress and stress responses and overcome them are necessary.

Effects of Parental Attachment and State-Trait Anxiety by Chinese Students in Korea: Focused on Mediating Effect of College Life Adjustment (재한 중국 유학생이 지각한 부모애착과 불안의 관계: 대학생활적응의 매개효과를 중심으로)

  • Zhu, Yuan;Park, Jeong Yun
    • The Journal of the Korea Contents Association
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    • v.17 no.6
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    • pp.580-590
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    • 2017
  • The purpose of this study was to examine the effects of parental attachment on anxiety of Chinese students in Korea as well as the role of the mediating in the adjustment of college life. This study investigates the Chinese students in Seoul in 4-year colleges. And through SPSS 18.0 this study has done. The results as follows: first, the age, education background, the communication between college students and their parents, the sense of trust, academic adjustment, social adjustment, personal emotional adjustment, college environment adjustment and anxiety were negatively correlated. And alienation is positively correlated with anxiety. Second, the factor analysis of parents attachment in this study, the trust and the adjustment of college life have an impact on academic adjustment and personal emotional adjustment, and the academic adjustment and the personal emotional adjustment also has a certain impact on anxiety. Third, the results indicate that the mediating effect of college life adjustment is statistically significant on the relationship of cognized parental attachment and anxiety. At the same time, it is also proved that in the relationship between parental attachment and anxiety, the adjustment of college life has been the role of the intermediary.

The Effect of Ego Strength and School Adjustment on the Life Satisfaction of School-Aged Children (자아강도와 학교 적응이 학령기 아동의 생활만족도에 미치는 영향)

  • Kim, Se Young
    • Korean Journal of Child Studies
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    • v.36 no.4
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    • pp.111-127
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    • 2015
  • This study was conducted in order to model the relationship between children's ego strength and their school adjustment and life satisfaction levels. For this purpose, 4,765 4th-6th grade elementary school children were surveyed by means of a questionnaire. The collected data were analyzed by means of structural equation modeling. The results of this study may be summarized as follows. First, in all the grades, a significant and positive correlation was observed between the children's ego strength and their school adjustment and life satisfaction levels. Second, ego strength was found to be a variable that had a significant effect on life satisfaction indirectly through the medium of school adjustment. Third, the relation model between the variables differed according to grade. That is, the direct effect of ego strength on life satisfaction was stronger in the high grades, and the level of school relationship adjustment was found to have a significant effect on family relationship satisfaction as a factor of life satisfaction in 4th graders, whereas it did not in the case of 5th and 6th graders.

The Convergence Study effected of Adjustment to College life in Character, interpersonal relationship of health-related college (보건계열 대학생의 인성과 대인관계가 대학생활 적응에 미치는 융합 연구)

  • Jun, Mee-Jin;Noh, Eun-Kyung
    • Journal of the Korea Convergence Society
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    • v.9 no.4
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    • pp.433-442
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    • 2018
  • This study investigated factors affected to adjustment of college life character, interpersonal personal relationships of total 220 health-related college in G-city. This study was conducted by a self-report type survey between August 1 and December 30 in 2017, according to the findings, character level is aver. 3.49(1-5 score), interpersonal relationship aver. 3.40(1-5)score, adjustment to college life aver. 3.33(1-5)score were showed medium level, The relation between character, interpersonal relationship(r=.62, p<.001), adjustment to college life, character(r=.62, p<.001), adjustment of college life, interpersonal relations(r=.80, p<.001), Major satisfaction and adjustment of college life(r=-.32, p<.001) showed a significantly correlation of medium level. With improved personal relationships and higher behavior factor of level of character college adjustment to college life of these factors is 65%(F=102.97). The results reveals to develop program interpersonal relationship and character of college students in oder to improve adjustment process to college life.