• Journal of Korean Society for Quality Management
• /
• v.50 no.4
• /
• pp.793-810
• /
• 2022

Purpose: As improving the search performance of aviation security equipment is considered essential, this study proposes the need for research on how to find an optimized test sequence that can reduce test time and operator power during the search function test of explosive detection systems. We derive the weights and work difficulty adjustment factor required to find the optimized test order. Methods: First, after setting the test factors, the time of each test and the difficulty scale determined by the worker who performed the test directly were used to derive weights. Second, the work difficulty adjustment coefficient was determined by combining the basic weight adjustment factor and corresponding to the body part used by the test using objective rating. Then the final standard time was derived by calculating the additional weights for the changeability of the test factors. Results: The order in which the final standard time is minimized when 50 tests are performed was defined as the optimized order. 50 tests should be conducted without duplication and the optimal order of tests was obtained when compared to previously numbered tests. As a result of minimizing the total standard time by using Excel's solver parameters, it was reduced by 379.14 seconds, about 6.32 minutes. Conclusion: We tried to express it in mathematical formulas to propose a method for setting an optimized test sequence even when testing is performed on other aviation security equipment. As a result, the optimal test order was derived from the operator's point of view, and it was demonstrated by minimizing the total standard time.

• Journal of Korean Academy of Nursing
• /
• v.37 no.5
• /
• pp.736-743
• /
• 2007

Purpose: The purpose of this study was to develop a scale of free nursing home adjustment for the elderly in Korea. Method: The developmental processes were construction of a conceptual framework, development of preliminary items, verification of content validity, twice data gathering, verification of construct validity, and reliability of final items. The first 53 preliminary items were obtained through review of literatures about nursing home adjustment and in depth interviews with 5 staffs of nursing home. These items were reviewed by five specialists for content validity and 39 items were chosen. The first data was collected from 107 elderly residing in 3 nursing homes and the second survey was from 147 residents who were living in five nursing homes. Finally this data was analyzed for construct validity and reliability. Result: There were 23 final items which were sorted into 5 factors. The factors were identified as 'Relocation distress symptom'(8items), 'Making friends'(4items), 'Acceptance of new residence'(6items), 'Difficulty in group life'(3items), and 'Having self-worth'(2items). The cumulative percent of variance was 53.466%. The reliability of the scale, Cronbach's alpha was .837. Conclusion: The result of this study could be used for measuring nursing home adjustment of the elderly. However, for further validity and reliability, repeated researches are needed.

• The Journal of Korean Society for School & Community Health Education
• /
• v.16 no.1
• /
• pp.27-38
• /
• 2015

Objectives: The purpose of this study is to develop programs that help students adjust to school and provide basic data for the students who have difficulty adjusting to school by analyzing the influence of elementary school students' stress and their relationship with parents on school adjustment. Methods: The study surveyed fourth graders in 3 elementary schools in G district. The researcher used convenience sampling to select the 3 elementary schools. The combined 158 students were selected for the analysis, and the survey was conducted for a month in September 2011. The stress monitoring tool used in the 5th year of Korean Youth Panel Survey was mobilized to measure levels of stress among the participants. To measure the parent-child relationship, the Korean Parent-Child Relationships Scale was used. For the measurement of school adjustment, a tool designed to identify the school adjustment of elementary school students was used. The SPSS 21 software and a two-sided test under the significance level of ${\alpha}=0.05$ were used to analyze data. The regression analysis was also used to identify the relative influence of the stress and parent-child relationship on children's adjustment to school. Results: The regression analysis has found the following: the higher peer stress (B=-0.175) and parental strictness (B=-0.159) grow, the lower the level of school adjustment gets; the higher the level of intimacy between parent and child gets, the higher the level of school adjustment grows; and intimacy between parent and child (${\beta}=0.400$) has the largest influence on the child's school adjustment. Conclusions: For elementary school students to be well adjusted to school, their stress and relationships with their parents should be managed. In particular, using the programs that can reduce stress from peers and increase parent-child intimacy will be effective in helping students adjust to school.

• Korean Journal of Childcare and Education
• /
• v.11 no.5
• /
• pp.73-89
• /
• 2015

This study examined the effects of parenting behavior perceived by children and ego-resilience on school adjustment according to child gender. The participants were 2,119 first grade students(1,093 boys, 1,026 girls) in the fourth Korea Youth Panel Survey. The results of this study were as follows : First, boys perceived parenting behavior more positively than girls. Girls perceived more difficulty in ego-resilience and school adjustment than boys. Second, school adjustment of the boys and girls showed a positive correlation with parenting behavior perceived by children and ego-resilience. Third, the more perceived positive parenting behavior and the better perceived ego-resilience, the better the boys and girls could make adjustment in school. The results of this study offers a fundamental data about parenting behavior and ego-resilience which can improve the school adjustment of a first grade student.

• The Journal of Industrial Distribution & Business
• /
• v.11 no.7
• /
• pp.19-28
• /
• 2020

Purpose: In this study, we would like to confirm that the transfer of young workers may be a means of enhancing their internal satisfaction, not to get a better job, by setting work-related characteristics that are highly relevant to job-related factors. Research design, data, and methodology: In this study, preparation for turnover was set as dependent variables to identify factors related to the turnover of young people, and the type of business, employment type, debt status, job satisfaction, job difficulty compared to education level, job difficulty, job degree, job major agreement, debt status, and other demographic social characteristics were selected as independent variables. Results: The characteristics related to personal criteria in job-seeking process were significant in the form of business, employment type, job satisfaction, work difficulty compared to the level of education, work difficulty compared to the level of technology, job major matching, and debt status. Conclusions: This study confirmed that young people's turnover may not simply be a means to get a better job, but to increase satisfaction in the internal aspects of their jobs, and that for young people, a job is an important development process that represents their identity and needs to be approached from a life-cycle perspective.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.6
• /
• pp.3469-3477
• /
• 2014

This study examined the effects of a 4 week, 8 session LCSI programs on the self-efficacy, adjustment to college of undergraduates. The number of participants was 39 students at one region. For statistical analysis, descriptive statistics, paired t-test, and Pearson correlation were used with SPSS WIN 18.0. The results are summarized as follows. The self-efficacy and underlying factors of self-efficacy in self-confidence, sense of self-regulated, task difficulty increased significantly, and the underlying factors of adjustment to college life academically, socially, emotionally, physically, love of the university, and adjustment to college increased significantly. Therefore, the self-growth program using LCSI, self-efficacy and adjustment to college life appears to have significant effects, and the LCSI program is more useful to consider the characteristics of each person by applying a range of situations to plan and deliver, such as communication or subjects, and conflict management in a variety of situations.

• The Journal of Churna Manual Medicine for Spine and Nerves
• /
• v.14 no.2
• /
• pp.147-156
• /
• 2019

Objectives : This study aimed to report the evidence of difficulty, safety, and frequency of the use of Chuna Manual Therapy. Methods : The survey questions were developed using the consensus from a professor who majored in Rehabilitation Medicine of Korean Medicine (RMKM). November 26th to December 31st 2018, the questionnaire was given to education training members of the Korean Society of Chuna Manual Medicine for Spine & Nerves by paper. Twenty-nine(23%) of the questionnaires were retrieved. Difficulty, safety, and frequency of the use of Chuna Manual Therapy were reported based on the questionnaire. Results : In this study, the more difficult techniques were observed to be less safe. In particular, the adjustment techniques applied to the cervical and lumbar spine was answered with high difficulty. Although these techniques are high difficulty and low safety, the reason for its versatility also suggests that the technique has a high therapeutic effect and necessity. Conclusions : This is the first consensus on experts'opinions on Chuna Manual Therapy for education. We hope that this report is helpful for Korean medicine doctors who operate technique and expected to make clinical evidence of Chuna Manual Therapy.

• The Journal of the Korea Contents Association
• /
• v.21 no.2
• /
• pp.594-603
• /
• 2021

This study explored the moderating effects of task difficulty for flow, learning motivation, and interesting in distant PBL classes of pre-service teachers. For this, the research model was constructed by analyzing previous studies. The research model verification was conducted by 105 students of taking courses in the curriculum. The distant PBL used a real-time video conference system. Cooperative activities were carried out in real time. After the end of the distant PBL activity, the level of learning motivation, interesting, flow, and task difficulty perception were measured. The collected data were analyzed using a test of the structural model invariance across the groups using a structural equation model. This analysis verifies the difference in path coefficients between measurement models. The control effect of task difficulty was verified through the difference in path coefficient. As a result, it was verified that interesting mediates the influence of learning motivation on flow. And the moderating effect of the perceived task difficulty appeared on the path from learning motivation to interesting.

• 제어로봇시스템학회:학술대회논문집
• /
• 1991.10a
• /
• pp.238-242
• /
• 1991

This paper presents an approach to self-tuning PI control of dynamic plants, based on fuzzy logic application. A fuzzy logic composed of linguistic conditional statements is employed by defining the relations of input-output variables of the controller. In the synthesis of a fuzzy logic controller, one of the most difficult problem is the selection of linguistic control rules and parameters. To overcome this difficulty, self-tuning fuzzy PI controller (STFPIC) with a hierarchical structure in which the fuzzy PI controller is assigned as the lower level and the rule modification and parameter adjustment as the higher level. The rules and parameters are generated by the adjustment of membership function through performance index(PE). In this paper, the algorithm for of the controller performance is estimated by means of computer simulation.

• Korean Journal of Childcare and Education
• /
• v.11 no.1
• /
• pp.355-371
• /
• 2015

This study explored the longitudinal relationships between school life adjustment and the parents' neglect/abuse as perceived by children according to gender. The participants were 5th and 6th grade children and the instruments were parents' neglect/abuse scale and school life adjustment scale. Using Korea Youth Panel data of Child Youth Policy Institute of Korea, 5th and 6th grade data were analyzed. The results were as follows: Neglect/abuse as perceived by children were different according to their gender and grade. Children who had perceived more parents' neglect/abuse were more likely to have difficulty in school life adjustment. The results of this study suggest that the appropriate interventions for the parents' neglect and abuse is needed by showing the stability of the child's perception of the parents' neglect and abuse during the 5th-6th grade.