• Journal of Digital Convergence
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• v.19 no.1
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• pp.89-97
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• 2021

The purpose of this study is to verify the influence of the cognitive process related to the organizational citizenship behavior. The research method consisted of the cross-design of the prospect dimension and goal orientation dimension, and information security factors consisted of distributive justice, response efficacy, self efficacy, and organizational citizenship behavior. As a result of the study, the dimension of prospect had a significant effect on response efficacy and self efficacy, and it was found that the influence of the gain condition was greater than that of the loss condition. The goal orientation dimension had a significant effect on response efficacy and self efficacy, and it was found that the influence of the growth condition was greater than that of the validation condition. The research model that explained the relationship between information security factors appeared as a partial mediating model between distributive justice, response efficacy, and organizational citizenship behavior. The implications of this study suggest that it is necessary to establish an information security strategy in combination with individual decision-making factors and organizational culture factors.

• Journal of Digital Convergence
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• v.20 no.1
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• pp.221-229
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• 2022

This study is to develop and validate the academic motivation scale for medical students(AMSMS) based on self-determination theory. After composing preliminary questions from 74 students, a preliminary and main survey were conducted with 148 and 300 students from September to November 2020. Factor analysis, reliability analysis, and correlation analysis were used. As a result of exploratory and confirmatory factor analysis, construct validity was verified. The fitness index of the five-factor model of amotivation, external regulation, introjected regulation, identified regulation, intrinsic motivation was good. The reliability of each factor was ranged from 0.760 to 0.933. The criterion validity of AMSMS was verified by showing a correlation with academic self-efficacy and school life satisfaction. This results show that the AMSMS is both valid and reliable, and it is expected to be used in research related to academic motivation of medical students in the future.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.20 no.6
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• pp.157-165
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• 2020

Aiming at the development of neural network and self-driving data set, it is also an idea to improve the performance of network model to detect moving objects by dividing the data set. In Darknet network framework, the YOLOv4 (You Only Look Once v4) network model was used to train and test Udacity data set. According to 7 proportions of the Udacity data set, it was divided into three subsets including training set, validation set and test set. K-means++ algorithm was used to conduct dimensional clustering of object boxes in 7 groups. By adjusting the super parameters of YOLOv4 network for training, Optimal model parameters for 7 groups were obtained respectively. These model parameters were used to detect and compare 7 test sets respectively. The experimental results showed that YOLOv4 can effectively detect the large, medium and small moving objects represented by Truck, Car and Pedestrian in the Udacity data set. When the ratio of training set, validation set and test set is 7:1.5:1.5, the optimal model parameters of the YOLOv4 have highest detection performance. The values show mAP50 reaching 80.89%, mAP75 reaching 47.08%, and the detection speed reaching 10.56 FPS.

• Korean Journal of Culture and Social Issue
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• v.30 no.1
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• pp.81-100
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• 2024

This study validated and investigated the psychological properties of the Korean version of Everyday Ageism Scale to measure subtle ageism in day-to day lives. A total of 498 adults aged 60 and above participated in this study, which involved measuring the everyday ageism scale, experiences of elderly discrimination, self-perception of aging scale, depression (SCL-90R), and satisfaction with life scale. The sample was randomly divided into two groups.Tthe first group(n=198) used for exploratory factor analysis and reliability analysis, and the second group(n=300) was used for confirmatory factor analysis and validity testing. As a result, if was confirmed that K-EAS consist of 10 items and 3 dimensions (i.e., exposure to ageist messages, ageism in interpersonal interactions, and internalized ageism), consistent with the original scale. K-EAS demonstrated good internal consistency, convergent validity, discriminant validity, and incremental validity. In specific, ageism in interpersonal interactions and internalized ageism were correlated with experiences of elderly discrimination, negative self-perceptions of aging, and depression. However, ageism in interpersonal interactions and internalized ageism were negatively correlated with positive self-perceptions of aging and satisfaction with life. Also, the K-EAS provided additional explanation of depression even when excluding the effect of experiences of elderly discrimination. The result confirme that K-EAS is reliable and valid. The implication and limitations of this study, as well as suggestions for the use of K-EAS and future research, were discussed.

• Journal of Korean Academy of Nursing
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• v.43 no.6
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• pp.714-725
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• 2013

Purpose: This study was done to provide fundamental data for the development of competency reinforcement programs to prevent addictive behavior in adolescents through the construction and examination of an addiction prevention core competency model. Methods: In this study core competencies for preventing addictive behavior in adolescents through competency modeling were identified, and the addiction prevention core competency model was developed. It was validated methodologically. Results: Competencies for preventing addictive behavior in adolescents as defined by the addiction prevention core competency model are as follows: positive self-worth, self-control skill, time management skill, reality perception skill, risk coping skill, and positive communication with parents and with peers or social group. After construction, concurrent cross validation of the addiction prevention core competency model showed that this model was appropriate. Conclusion: The study results indicate that the addiction prevention core competency model for the prevention of addictive behavior in adolescents through competency modeling can be used as a foundation for an integral approach to enhance adolescent is used as an adjective and prevent addictive behavior. This approach can be a school-centered, cost-efficient strategy which not only reduces addictive behavior in adolescents, but also improves the quality of their resources.

• The Research Journal of the Costume Culture
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• v.20 no.5
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• pp.753-765
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• 2012

This study tested the validity of the six-factor model of fashion savvy which was modified from the consumer savvy scale developed by Macdonald and Uncles(2007) and explored the relationship between fashion savvy and consumer propensity to observe. Regarding the relationship, it was hypothesized that consumer propensity to observe antecedes fashion savvy. Data were gathered by surveying university students in Seoul metropolitan area, using convenience sampling, and 311 questionnaires were used in the statistical analysis. In analyzing data, factor analysis and regression were conducted. The findings show the validity of the six factors of fashion savvy, which are fashion sophistication, interpersonal network competency, online network competency, marketing literacy, consumer self-efficacy, and consumer expectations. Tests of the hypothesized relationship show that two factors of consumer propensity to observe influence fashion savvy. More specifically, the 'observing shoppers' factor positively influences all six factors of fashion savvy, whereas the 'following what others buy' factor negatively influences four factors of fashion savvy, fashion sophistication, interpersonal network competency, marketing literacy, and consumer self-efficacy. The implications of these findings and suggestions for future study are also discussed.

• Journal of Family Resource Management and Policy Review
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• v.16 no.3
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• pp.83-107
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• 2012

This study analyzed the outcomes of the Healthy Family Support Center's 2011 Pilot Project to support grandparent-grandchild families. This paper applied Frank Fisher's multidimensional evaluation methodology, which includes 4 steps: program verification, situational validation, system vindication and social choice. The major findings and their implications are as follows: the strong points of the pilot project are the characteristics of its services, i.e. sending services, customized services, family-unit services and integrated services. Therefore, it is necessary to train human resources to deliver these services more professionally and to provide comprehensive life-planning. The weak point of the pilot project is its lack of services relating to the self-reliance of the clients. Thus it is necessary to revise the service subsystems to include programs that promote self-support measures.

• Journal of The Korean Association of Information Education
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• v.20 no.4
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• pp.401-408
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• 2016

CS Unplugged education is emphasized as the component of the basic principles of Elementary SW education. This document produced by two other Timbell presents the contents in a variety of topics about computer science. One of the main components is the finite Automata, and this requires the development of educational materials for teaching our situation. So We'll present the finite Automata learning materials for elementary school classes. Learning model that we have presented is a process of self-directed and activity-based learning. For verification of this experiment was the validation of the expert group and was concluded that adequate through the analysis of the diagnostic tests.

• International Journal of Naval Architecture and Ocean Engineering
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• v.4 no.3
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• pp.322-334
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• 2012

This paper shows the numerical and experimental results about the hydrodynamic characteristics of X-Twisted rudders having continuous twist of the leading edge along the span. All the results were compared with those of the semi-balanced rudder. Calculation through the Reynolds-Averaged Navier-Stokes Equation (RANSE) code with propeller sliding meshes shows large inflow angle and fast inflow velocity in the vicinity of ${\pm}0.7$ R from the shaft center, so it may cause cavitation. Also, X-Twisted rudder has relatively small inflow angles along the rudder span compared with semi-balanced rudder. For the performance validation, rudders for two large container carriers were designed and tested. Cavitation tests at the medium sized cavitation tunnel with respect to the rudder types and twisted angles showed the effectiveness of twist on cavitation and the tendency according to the twist. And the resistance, self-propulsion and manoeuvring tests were also carried out at the towing tank. As a result, in the case of X-Twisted rudder, ship speed was improved with good manoeuvring performance. Especially, it was found out that manoeuvring performance between port and starboard was well balanced compared with semi-balanced rudders.

• Journal of muscle and joint health
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• v.29 no.2
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• pp.91-99
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• 2022

Purpose: The purpose of this study was to examine the level of agreement between smartphone apps and self-reported physical activity questionnaires. Methods: Quantitative methods were used to assess the correlation and agreement between the number of steps counted by a smartphone app and the amount of walking reported in a survey. A total of 29 adults who used smartphones were recruited from a university, and their step counts from their smartphone pedometers and responses to the international physical activity questionnaire (IPAQ) were collected over a 10-week period. Results: An analysis of 170 data pairs with Spearman's rho correlation and a Bland-Altman plot revealed a positive correlation between step counts from the smartphone app and walking activity from the IPAQ. The Bland-Altman plot also demonstrated the agreement to be improved among female participants. Conclusion: In assessing walking activity, smartphone pedometer apps showed good correlation with the IPAQ and improved agreement with the IPAQ among women. Therefore, it is suggested that the participants' gender and activity intensity, as well as the accuracy of measurement tools, should be considered in an evaluation of the delivery of physical activity promotion programs through smartphone apps.