• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.6 no.3
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• pp.111-121
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• 2007

In this paper, we propose a TH-Multiband-UWB system through pulse shaping to fit in domestic UWB spectrum regulation. We propose the transmission pulse of Multi-Carrier type for pulse shaping and use Cognitive Radio to detect interfering frequency. We use Genetic Algorithm in Cognitive Radio's calculation propose and propose solution of interference problem between TH-UWB using Cognitive Radio and typical MB-OFDM UWB system or other communication systems. In this paper, we explain how Cognitive Engine detects the interfering frequency. The technique of TH-Multiband-UWB system using Cognitive Radio shows a good performance in interference condition.

• Journal of East Asia Management
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• v.4 no.2
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• pp.63-92
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• 2023

This study analyzes the effect of job crafting behavior on career satisfaction and job satisfaction that allows active participants to perform their jobs in a work environment where autonomy and delegation are emphasized, and how the degree of person-job fit plays a role in the relationship between the three variables. The results of an empirical analysis of 360 employees of domestic companies are as follows. First, job crafting was found to have a positive (+) effect on career satisfaction and job satisfaction, respectively, confirming the importance of job crafting in a situation where the work environment changes rapidly. Second, job crafting was found to have a positive (+) effect on desire-supply fit and ability-demand fit, respectively, which are components of person-job fit. This means that person-job fit can be improved through task, cognitive, and relationship crafting. Third, it was found that desire-supply fit and ability-demand fit had a positive (+) effect on career satisfaction and job satisfaction. This means that the higher the person-job fit the more satisfied the career and job. Finally, desire-supply fit has a partial mediating effect in the relationship between job crafting, career satisfaction, and job satisfaction and ability-demand fit has a partial mediating effect in the relationship between job crafting, job satisfaction. In summarizing the above research results, this study suggested in a changing organizational environment that it is necessary to provide individual active work performance (job crafting) opportunities for career satisfaction and job satisfaction, and that it is important to create an organization's support environment to enhance person-job fit.

• Journal of Korean Academy of Nursing
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• v.53 no.4
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• pp.385-396
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• 2023

Purpose: Drawing on person-environment fit theory and social cognitive theory, this study aimed to examine how self-efficacy affects nurses' workplace well-being via person-job fit and the moderating role of digital competence. Methods: A two-wave survey was conducted to collect data. Data were collected from six hundred and ninety-five nurses at three Chinese hospitals between May 2022 and September 2022. We employed hierarchical regression analysis and bootstrapping to analyze the data. Results: Self-efficacy positively influenced person-job fit (β = .55, p < .001), which positively affected nurses' workplace well-being (β= .32, p < .001). Person-job fit mediated the effect of self-efficacy on nurses' workplace well-being. Additionally, digital competence strengthened the positive impact of self-efficacy on person-job fit (β = .12, p < .001). Conclusion: Recruiting nurses with both self-efficacy and digital competence benefits hospitals. It is critical for nurses to improve their digital competence for achieving person-job fit and attaining workplace well-being in the post-coronavirus disease 2019 (COVID-19) era.

• Korean Journal of Child Studies
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• v.18 no.2
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• pp.177-190
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• 1997

The two major theoretical frameworks that have informed research on symbolic play and cognitive development were reviewed. Piaget and Vygotsky had different views of the role of symbolic play in children's development. For Piaget, play is primarily an assimilative activity; that is, in play, children modify reality to fit their existent cognitive schema and desires. In his view, play does not facilitate development, but it is used to consolidate existent concepts. For Vygotsky, play is a precursor to symbolization and is a leading factor in development. Particularly the lack of a sociocultural dimension in Piaget's theory brought about the influence of Vygotsky, for whom this dimension is central. However, the research yielded so far has not fully investigated the wider sociocultural elements that define and inform the play context. This article concludes by suggesting an approach to children's play that is directed by a proper estimation of the interaction between its cognitive, emotional, and sociocultural dimensions.

• Safety and Health at Work
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• v.9 no.4
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• pp.434-440
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• 2018

Background: In industrial countries, home care of community dwelling elderly people is rapidly growing. Frequent injuries in home caregivers result from slips, trips, and falls (STFs). The current study tests attentional cognitive failure to mediate the association between work stressors and STFs. Methods: A sample of 125 home caregivers participated in a questionnaire study and reported work interruptions, unreasonable tasks, quality-threatening time pressure, conscientiousness, attentional cognitive failures, and STFs. Results: In structural equation modeling, the mediation model was shown to fit empirical data. Indirect paths with attentional cognitive failures as the link between work stressors and STF were all significant in bootstrapping tests. An alternative accident-prone person model, that suggests individual differences in conscientiousness to predict attentional cognitive failures that predict more frequent work stressors and STFs, showed no significant paths between work conditions and STFs. Conclusion: To prevent occupational injury, work should be redesigned to reduce work interruptions, unreasonable tasks, and quality-threatening time pressure in home care.

• Korean Journal of Child Studies
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• v.36 no.6
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• pp.1-21
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• 2015

This study was aimed at examining the paths through which family socioeconomic status as indicated by family income and parental education influenced preschool-aged children's socioemotional and cognitive development through the mediating role of parental warmth and the home learning environment. The study made use of data from 1,080 families who participated in the 5th wave of the Panel Study on Korean Children, when their children were approximately 4 years of age. Structural equation modeling analysis revealed that the models, including both parental warmth and the home learning environment did not fit the data well. The effects of warmth on social competence and cognitive development were not statistically significant. The modified models, using the home learning environment as a mediator between family SES and child's developmental outcomes showed that higher level of family income and parental education predicted a more cognitively stimulating home environment, which in turn, predicted a child's greater levels of social competence and positive cognitive development. The social competence of preschool-aged children again significantly predicted their cognitive development. The mediating effects of the home learning environment were statistically supported.

• The Journal of Industrial Distribution & Business
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• v.15 no.9
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• pp.11-19
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• 2024

Purpose: This study analyzes how cabin crew service quality influences customer loyalty in the aviation industry. Specifically, it examines how the reliability, professionalism, and authenticity of cabin crew services affect cognitive loyalty and whether such effects affect emotional loyalty. Design and methodology: We surveyed passengers who had used aviation services in the past year. Structural equation modelling was used to test our hypotheses. To test model fit and assess reliability, validity was developed for the measurement items of each variable. Findings: The results support all four hypotheses. Reliability, professionalism, and authenticity of cabin crew services positively influence cognitive loyalty. Furthermore, cognitive loyalty significantly and positively affects emotional loyalty. These findings highlight the crucial role of cabin crew in fostering both rational preference and emotional attachment among passengers. Conclusions: This study provides insights into developing customer loyalty in the aviation industry. It demonstrates the need to invest in cabin crew training, which ultimately affects all three service quality dimensions. It also indicates that carriers can consider cognitive loyalty as a gateway to emotional loyalty and should pursue strategies accordingly. These results provide airlines with practical implications for improving customer loyalty and furthering their competitive advantage in the industry.

• Korean Journal of Child Studies
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• v.29 no.4
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• pp.79-95
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• 2008

This study investigated developmental pathways mediating effects of child abuse on peer rejection. Participants were 904 poor children aged 10-15 from 16 nationwide cities/provinces who receive financial sponsorship from Childfund in cooperation with the Ministry for Health, Welfare and Family Affairs. Structural equation modeling was employed for statistical analyses. Results showed that child abuse was directly associated with heightened risk of rejection by peers; the relationship was indirectly mediated by aggression and cognitive ability. The hypothesized partially mediated model had a better model fit than the fully mediated model. Aggression and low cognitive ability, significant effects of abuse, were associated with peer rejection. Social withdrawal, also associated with child abuse, did not account for the association between abuse and peer rejection.

• 재활복지
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• v.20 no.4
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• pp.1-29
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• 2016

The research regarding employees' job satisfaction is one of the most important indicators of their vocational adjustment or outcome. The purpose of this study is to investigate the level of job satisfaction of South Korean masseurs with visual impairments and what variables predict to this. The work satisfaction model of Social Cognitive Career Theory (Lent Brown, 2006a) was grounded. a total of 221 South Korean masseurs with visual impairments participated in this study. Multiple regression analysis indicated that as masseurs in this study experienced having a better fit with their job regarding their monetary aspects, as they felt efficacious with their massage skills, as they felt more positive, and as they considered their job duties fit their education or skills they learned, their level of job satisfaction was higher. However, fit with their organization values or cultures or how much they get social support from their family, friends, or significant others did not predict their job satisfaction. In addition, the analysis supported the existence of a moderating effect of positive affect on the relationship between subjective fit and job satisfaction, in addition to the moderating effect of social support on the relationship between work related self-efficacy and job satisfaction among study participants. Implications for policy makers, researchers, and career counselors were also provided.

• The Journal of Information Systems
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• v.25 no.4
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• pp.63-85
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• 2016

Purpose While the popularity of C2C auction platforms such as eBay is gradually decreased, this domain is still undermined to explain online bidding behaviors. Online bidders sometimes engage in impulsive bidding due to some of the online auction characteristics. Therefore, this study develops and tests a model of the impulsive bidding exhibited by online bidders in C2C auction platforms. Based on S-O-R framework, our model posits that both perceived time-pressure and competition intensity affect cognitive absorption which ultimately influences the impulsive bidding. Design/methodology/approach This study collected survey data from 214 C2C auction participants, who have prior experience on impulsive bidding and tested both measurement model and structural model by using CB-SEM (covariate-based structural equation modelling) technique. In this study, by using AMOS 20.0, we tested the measurement model for its overall fit, item reliability, and validity and further conducted the structural model to test our proposed hypotheses. Findings Based on our results, we found that perceived tim-pressure and competition intensity were positively related to cognitive absorption. We also found that the cognitive absorption was positively associated with impulsive bidding behavior. In this study, by developing our research model in S-O-R framework, we provide an alternative theoretical mechanism to describe online impulsive bidding behavior.