• Journal of the Korea Safety Management & Science
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• v.25 no.2
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• pp.159-165
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• 2023

The entire industry is increasing the use of big data analysis using artificial intelligence technology due to the Fourth Industrial Revolution. The value of big data is increasing, and the same is true of the production technology. However, small and medium -sized manufacturers with small size are difficult to use for work due to lack of data management ability, and it is difficult to enter smart factories. Therefore, to help small and medium -sized manufacturing companies use big data, we will predict the gross production time through machine learning. In previous studies, machine learning was conducted as a time and quantity factor for production, and the excellence of the ExtraTree Algorithm was confirmed by predicting gross product time. In this study, the worker's proficiency factors were added to the time and quantity factors necessary for production, and the prediction rate of LightGBM Algorithm knowing was the highest. The results of the study will help to enhance the company's competitiveness and enhance the competitiveness of the company by identifying the possibility of data utilization of the MES system and supporting systematic production schedule management.

• International Journal of Internet, Broadcasting and Communication
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• v.14 no.1
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• pp.129-135
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• 2022

Real human digital models appear more and more frequently in VR/AR application scenarios, in which real-time markerless face capture animation of personalized virtual human faces is an important research topic. The traditional way to achieve personalized real human facial animation requires multiple mature animation staff, and in practice, the complex process and difficult technology may bring obstacles to inexperienced users. This paper proposes a new process to solve this kind of work, which has the advantages of low cost and less time than the traditional production method. For the personalized real human face model obtained by 3D reconstruction technology, first, use R3ds Wrap to topology the model, then use Avatary to make 52 Blend-Shape model files suitable for AR-Kit, and finally realize real-time markerless face capture 3D real human on the UE4 platform facial motion capture, this study makes rational use of the advantages of software and proposes a more efficient workflow for real-time markerless facial motion capture of personalized 3D real human models, The process ideas proposed in this paper can be helpful for other scholars who study this kind of work.

• Journal of Korea Society of Industrial Information Systems
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• v.24 no.4
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• pp.65-77
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• 2019

Adolescents reach the game-use states of adaptive and maladaptive by the absorption to computer game. Authors claimed that the two states are commonly related with the time of game-use, and the degree of them are distinctive according to adolescent individuals, specifically their self-control propensity. Authors proposed a conceptual research model that Big Five personality types predict their self-control which moderates the relationships from game use-time to the maladaptive and adaptive states. The data to test its validity and reliability had been sampled 999 Korean students in elementary school, middle school, and high school. Resultingly, the openness and conscientiousness of the adolescents affected positively on the self-control, which moderated negatively the relationship from the game use time to the maladaptive use state, but the positive moderation on the relationships from game use time to adpative state was not significant. These results mean that we could apply teenager's Big Five personality type and their self-control traits as a tool for preventing teens from the overuse state like addiction.

• Journal of the Korea Convergence Society
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• v.12 no.12
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• pp.355-363
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• 2021

In this study, after reclassifying the behavioral classification of '2019 Time Use Survey' according to occupation domain of OTPF-4. Time use of occupation domain was examined according to general characteristics and care need reasons were performed Independent t-test and one-way ANOVA. As a result, according to gender, IADL(P<.001), Leisure(P<.001), Social participation(P<.001) and according to marital status, ADL(P<.01), IADL(P<.001), Play(P<.05), Leisure(P<.001) and according to education level, ADL(P<.05), Education(P<.001), Social participation(P<.01) were differences. According to care need reasons, ADL(P<.01), IADL(P<.001), Rest and Sleep(P<.01), Leisure(P<.001), Social participation(P<.001) showed difference. This study will be used to identify time use by occupation domain and to plan interventions for a balanced and efficient lifestyle of korean disabled elderly.

• Journal of Families and Better Life
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• v.24 no.5 s.83
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• pp.205-222
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• 2006

The purpose of this study was to analyze time-use of rural families. The data for 9l4 persons or 400 farm households in eight provinces were collected using time diary. The results were as follows. 1) The time-use of the farming season were different from that of the off-filming season in rural area. 2) In the case of farm wort the working hours of husband were significantly longer than those of wife during the farming and of-filming season. In contrast the working hours of wife for housekeeping were significantly longer than those of husband during both seasons. 3) The time spent of work by rural adults is much longer than average work hours of adults in general during the farming season. And the rural adults spend less time in leisure compared to the adults in general during the farming season.

• Journal of Agricultural Extension & Community Development
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• v.14 no.1
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• pp.231-247
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• 2007

The purposes of this study were to analyze the structure of time use in farm households, and to compare the time use structure of women farmer with that of their husbands. The data for this study were collected from 276 farm households, selected from 8 provinces in the country. The data were collected at two times of farming season and off－farming season and classified as farm labor and household labor by labor types. SPSS(ver 12.0) statistical package was utilized to analyze the data, and t－test was performed for this study. The major findings are as follows; 1) In the case of work directly related to farming, husband's working hour was significantly longer than that of wife during the farming and off－farming season. In contrast with wife's household working hour was significantly longer than that of husband during both seasons. 2) There existed a severe work time imbalance between wife and husband during the-farming season. Based on the findings of this study, the following implications could be drawn to promote efficient labor and equal labor sharing. First, the consciousness has to be changed because the impartial labor sharing roles. We have to develope many programs to break these fixed ideas. And these programs have to be included to educational course and be instructed continuously. Second, the role of wife that household and farming work is important and will be magnified in the future.

• Journal of the Korean Society for Library and Information Science
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• v.48 no.2
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• pp.159-175
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• 2014

The purpose of this study is to analyze the relationships between the online information activities of older adults and their life satisfaction. Online information activities were categorized into 'information use ability', 'information use time', and 'information device use ability', and the life satisfaction included such as 'feeling of happiness', 'physical condition', and 'economical condition'. A total of valid 341 responses were examined and analyzed to test the research model using SPSS 19 and Amos. It found that the online information use ability and the online information use time had a positive effect to the information device use ability; it showed that the higher the information device use ability the higher their life satisfaction. However, the online information use ability and the online information use time had no effect to the older adults' life satisfaction in this study.

• Journal of Korean Academy of Nursing
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• v.34 no.2
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• pp.278-289
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• 2004

Purpose: The purpose of this study was to classify the elderly in long-term care facilities using the Resource Utilization Group(RUG-III) and to examine the feasibility of a payment method based on the RUG-III classification system in Korea. Method: This study measured resident characteristics using a Resident Assessment Instrument-Minimum Data Set(RAI-MDS) and staff time. Data was collected from 530 elderly residents over sixty, residing in long-term care facilities. Resource use for individual patients was measured by a wage-weighted sum of staff time and the total time spent with the patient by nurses, aides, and physiotherapists. Result: The subjects were classified into 4 groups out of 7 major groups. The group of Clinically Complex was the largest (46.3%), and then Reduced Physical Function(27.2%), Behavior Problems (17.0%), and Impaired Cognition (9.4%) followed. Homogeneity of the RUG-III groups was examined by total coefficient of variation of resource use. The results showed homogeneity of resource use within RUG-III groups. Also, the difference in resource use among RUG major groups was statistically significant (p<0.001), and it also showed a hierarchy pattern as resource use increases in the same RUG group with an increase of severity levels(ADL). Conclusion: The results of this study showed that the RUG-Ill classification system differentiates resources provided to elderly in long-term care facilities in Korea.

• The Journal of Korean Academic Society of Nursing Education
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• v.22 no.4
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• pp.485-494
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• 2016

Purpose: The present research is a descriptive study aimed at understanding clinical nurses' Video display terminal (VDT) syndrome and identifying the factors that affect their VDT syndrome. Methods: Data were collected from 239 clinical nurses working in two metropolitan cities. Research tools included subject's VDT syndrome assessing musculoskeletal, ophthalmic, dermal, psychiatric, and whole body syndromes. The data were analyzed using frequency analysis, average and standard deviation, t-test, One-way ANOVA, and multiple regression analysis with the SPSS/WIN 20.0 program. Results: The subjects' VDT syndrome score was 1.34 out of 5. There were significant differences in participating subjects' VDT syndrome, hospital's size, working unit, health status, diagnosis of illness, having an Order Communication System (OCS), having an Electronic Medical Record (EMR) System, continuous VDT working for more than one hour, break time during VDT use, VDT use time, comfort of the chair, adjustability of the height of the chair, size of the VDT's desk, distance between the monitor and the user's eyes, resolution of the monitor, and frequency of eye exercise during VDT use. According to the research, influencing factors on VDT syndrome in clinical nurses included size of the VDT's desk, frequency of eye exercise during VDT use, having an EMR system, break time during VDT use, diagnosis illness, and having an OCS' system. Conclusion: The findings from this study can be used as a basis for future VDT syndrome prevention education and programs for clinical nurses.

• Journal of the Korean Home Economics Association
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• v.30 no.4
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• pp.261-278
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• 1992

The purpose of this study is to compare the time use of urban housewives 1980 and 1990, and to investigate significant variables affect to the time spent, the independent effect of variables to the time use of her them. For this purpose, the data from 261(1980) and 287(1990) were analyzed. The major findings are follows: 1. There was 3-4 hours decreasing for household work in 1980 & 1990, and the significant variables were age, number of children, years of youngest child, education, type of kitchen, and type of heating, but in 1990, number of children and education of housewife. 2. In 1990, the independent effect of variables to household work time are number of children, years of youngest child, and cooking fuel to household work time and income to physiological time.