• IEMEK Journal of Embedded Systems and Applications
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• v.9 no.5
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• pp.293-297
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• 2014

ITS services are quickly evolving due to the convergence of ICT technologies. WAVE technology based on IEEE802.11p specification has been introduced for the high speed vehicle communication and applied into the transportation system for driving safety and convenience. Recently, WAVE technology as a inter vehicle communication is used for cooperative driving application. In this paper, the implemented inter vehicle communication system is introduced and suggested as a solution for V2X communication. The performance of the implemented inter vehicle communication system is tested and analyzed under various conditions.

• Journal of the Korean Home Economics Association
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• v.33 no.6
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• pp.1-10
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• 1995

The purposes of this study are to investigate the parents' communication behavior with their teen-aged child and the effects of the demographic and socio variables on it concerning with the parent education. A sample of 599 teen-aged children was obtained from the elementary, middle and high schools in the city of Seoul. Mean, t-test and F-test were used for data analysis. The major findings can be summurized as follows : The scores of parents' communication behavior are neither high nor low, namely, are not especially desirable. And there are differences in communication behavior by mother's age and schooling, differences in mother's communication behavior by father's age, schooling and occupation, differences in mother's communication behavior by child' sex and age. According to the above findings, it is necessary for all parents with teen-aged children to have the parental communication education, particularly for father with the older child.

• Korean Journal of Human Ecology
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• v.18 no.5
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• pp.1021-1033
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• 2009

The purpose of this study was twofold: One was to investigate the structural relationships among communication with father and mother, ego-identity, and school adjustment. The other was to test the structural equivalence among researched variables between middle and high school samples. The subjects were 419 sophomores of middle and high schools. The major findings were as follows. 1) Communication with the father had direct and indirect effects on adolescents' school adjustment, while communication with the mother had only an indirect effect on school adjustment. 2) Ego-identity had a direct effect on school adjustment, and mediated the effects of communication with father and mother in school adjustment. 3) Multiple-group analysis revealed that middle and high school groups had the same structural relationships, but had different regression weights.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.11
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• pp.1257-1264
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• 2015

With the successful deployment of 4G mobile communications such as Long-Term Evolution(: LTE), global leading countries including Europe, China, and Japan have been made an effort to take the lead in technology, standardization, and market with targeting the commercialization of 5G mobile communication in 2020. In order to judge the future evolution of a 5G mobile communication system, this paper discusses the comprehensive trends and the requirements set by each countries for the 5G mobile communication systems.

• Journal of Information Technology Services
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• v.7 no.4
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• pp.301-317
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• 2008

Product-related services in manufacturing industry are different from typical services in service industry. Product-related services ensure proper product functioning, provide additional repurchase, and offer attractive margin Product-related services in manufacturing industry are not core activity but taking supporting roles, while services in typical service industry are core parts. The purpose of this study is to investigate the role of communication in linking IT and product-related logistics service in manufacturing industry. The relationships among IT, communication, logistics service and business performance are explored using a path analysis. The empirical research reveals that higher degree of IT usability leads to increased communication, and in turn, communication affects logistics service, and ultimately business performance. In addition, this study shows communication plays an intermediate role in linking IT to logistics service.

• Journal of Integrative Natural Science
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• v.14 no.2
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• pp.50-56
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• 2021

Due to the recent increase in the mobile streaming market, mobile traffic is increasing exponentially. IMT-2020, named as the next generation mobile communication standard by ITU, is called the 5th generation mobile communication (5G), and is a technology that satisfies the data traffic capacity, low latency, high energy efficiency, and economic efficiency compared to the existing LTE (Long Term Evolution) system. 5G implements this technology by utilizing a high frequency band, but there is a problem of path loss due to the use of a high frequency band, which is greatly affected by system performance. In this paper, small cell technology was presented as a solution to the high frequency utilization of 5G mobile communication system, and furthermore, the system performance was improved by applying machine learning technology to macro communication and small cell communication method decision. It was found that the system performance was improved due to the technical application and the application of machine learning techniques.

• Korean Journal of Child Studies
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• v.14 no.1
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• pp.167-177
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• 1993

The purpose of the present study to investigate relationships among family background factors (i. e. adolescents' sex, mother's educational level and employment status. family's SES, and family types), mother-adolescent communication patterns and ego-identity development of adolescents. The subjects were 169 mother-adolescent dyads living in Seoul. Statistical methods used for the data analysis were frequencies, percentiles, Mean, ANOVA, Duncan's multiple range test, Pearson's product-moment correlation, regression analysis, ANCOVA, and Cronbach's ${\alpha}$. The results were as follows: (1) Significant differences of the adolescents were between family's SES and open communication patterns, between family types and problematic communication patterns. (2) Significant differences of the mothers were between family's SES and open communication patterns, and among family's SES, mother's educational level and problematic communication patterns. (3) There were significant differences in ego-identity of adolescents according to family's SES. (4) There were significant relationships between mother-adolescent communication patterns and the ego-identity development of adolescents. (5) The most influential variable explaining adolescents' ego-identity development was found to be problematic communication patterns perceived by adolescents. Family background factors and mother's communication patterns were not found to have significant effects.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.10 no.5
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• pp.147-151
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• 2010

In this paper, we propose network-coding based two-way relay communication using adaptive modulation scheme for satisfying relay QoS(Quality of Service) according to channel environment between user and relay. Two-way relay communication is bidirectional cooperative communication that users exchange own signal with help of relay. Network-coding based two-way relay communication can achieve high throughput compared to conventional scheme through reducing time slots. we propose adaptive M-QAM modulation scheme in network-coding based two-way relay communication for satisfying QoS of relay. Simulation result shows that the proposed scheme satisfies goal QoS of system.

• The Korean Journal of Community Living Science
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• v.22 no.1
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• pp.115-129
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• 2011

The purpose of this study was to examine the effect of parenting behavior and parent-child communication on elementary school children's multiple intelligence. 321 children selected from two elementary schools and their mothers participated in the study. Data were collected using the multiple intelligence index, parenting behavior inventory and parent-child communication index. The data were statistically analyzed using the t-test, one-way ANOVA(Duncan test), and multiple regression analysis. The study showed that there were some significant differences in children's multiple intelligence according to the children's gender, income, mother and father's educational background. There were some significant differences in children's multiple intelligence according to the parenting behavior, warmth acceptance and permissiveness nonintervention behaviors, and to the parent-child open communication and problematic communication. It was also found that children's gender, family income, warmth acceptance behavior, permissiveness nonintervention behavior, open communication and problematic communication were all significant predictors of the children's multiple intelligence. Implications based on this study are as follows; in order to increase the children' multiple intelligence, parents should be warmer and more accepting and have open communication with their children.

• Journal of Korean society of Dental Hygiene
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• v.18 no.1
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• pp.139-151
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• 2018

Objectives: This study was to compare the self-evaluated outcomes of communication competency in dental hygiene process of care in the students of a dental hygiene department with the teaching evaluation, and to confirm the difference of communication competency by the evaluator. Methods: This study attempted to confirm the value and usefulness of self-evaluation and teaching evaluation on the communication competency. The subjects of this study were 43 junior students who took a course of dental medical communication at the dental hygiene department of a university located in 'A' city, and the self-evaluation and teaching evaluation were conducted using the evaluation paper which was modified from the communication evaluation tool in the previous studies. The collected data were subjected to the correspondence sample t-test to compare the difference between the communication competency self-evaluation before and after the education, and after communication education, while an independent sample T-test was conducted to compare the differences between the evaluators. Results: The student's self-evaluations before and after the education showed the statistically significant difference, moreover, the post-education competency scores were improved mostly in all the items more than the pre-education competency scores. The score of self-evaluation was higher than that of the teaching evaluation in all items except one question in the case of history-information collection stage. Conclusions: It is confirmed that there is an effect to allow the students to improve their communication competency in the dental health communication education in the dental hygiene department. To evaluate the student's communication competency, the mutual complement of self-evaluation and teaching evaluation should be confirmed in parallel each other.