• Journal of the Korean Society of Industry Convergence
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• v.23 no.1
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• pp.41-48
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• 2020

Currently, the industry uses MODBUS communication method using RS485 as a communication method used when constructing distributed equipment and networks. However, this method has a rather good transmission and reception distance, but has a disadvantage of being a half-duplex communication method. Therefore, there is a great need for a full-duplex communication method that can simultaneously transmit and receive two-wire communications. Therefore, in this paper, we propose a new communication hardware equipment that can implement full-duplex communication method by communication signal level to overcome the disadvantage of communication speed. The proposed communication hardware is a structure that can transmit and receive at the same time on the same communication line in two equipments communicating in a two-wire system. The characteristic of this communication hardware is that the transmitter generates two-level signal for data transmission, but the receiver generates three-level electric signal according to the status of the transmission data generated by the receiver. The data transmission signal information of the receiver is present at the same time. Therefore, the receiving side can analyze the received signal based on the information on the current transmission signal and can analyze the signal only in the two communicating devices, so it can be seen that the communication security is very excellent.

• Journal of the Korea Convergence Society
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• v.8 no.2
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• pp.15-20
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• 2017

In this paper, Esp8266, Node.js, and TCP / IP socket communication are used to design a compact data integration device. This device is designed to configure server and client using Esp8266 module that supports Wifi connection and to support bidirectional data transmission using TCP / IP socket communication. The server is configured using the Node.js operating system, and the database is integrated using Mysql. The network is designed to have a separate IP address by assigning a private IP address to the router, such as a home network. This device can transmit data bidirectionally, store individual client data on the server side, and can check the flow of data transmitted bidirectionally through wire-shark, so that it can be used as a compact real-time data integration and convergence device.

• Journal of the Korea Convergence Society
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• v.7 no.4
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• pp.163-172
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• 2016

This research was convergence study conducted to understand the effect that parent-son/daughter communications have on the addiction to smartphones, with stress level, self-control, and self-efficacy as the mediator. The subjects were college students located in J province and K province, and 232 questionnaires were used as the data for analysis. As a result, addiction to smartphones had negative correlations with parent-son/daughter communication, self-control, and self-efficacy and had positive correlations with stress level. In addition, parent-son/daughter communication influenced the degree of addiction to smartphones, with stress level, self-control, and self-efficacy as the mediator. Therefore, in order to reduce college students' addiction to smartphones, programs should be developed specifically and systematically to increase their communication with their parents, and it is necessary to draw up measures to reduce students' stress levels and increase their self-control and self-efficacy levels.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.3
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• pp.428-434
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• 2020

Recently, due to the development of ICT technology, changes to the convergence service platform of information systems are accelerating. Convergence services expanded to cyber systems with 5G communication, IoT, AI, and cloud are being reflected in the real world. However, the field of cybersecurity audit for responding to cyber attacks and security threats and strengthening security technology is insufficient. In this paper, we analyze the international standard analysis of information security management system, security audit analysis and security of related systems according to the expansion of 5G communication, IoT, AI, Cloud based information system security. In addition, we design and study cybersecurity audit checklists and contents for expanding security according to cyber attack and security threat of information system. This study will be used as the basic data for audit methods and audit contents for coping with cyber attacks and security threats by expanding convergence services of 5G, IoT, AI, and Cloud based systems.

• Journal of Digital Convergence
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• v.11 no.9
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• pp.167-172
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• 2013

In information society, Convergence was combined with a word 'digital'. Digital convergence means a service or new product which appeared through fusion of unit technologies in information and communication regions. The effects of convergence technologies and social phenomenons are visualized in overall regions of society such as economy, society, culture, etc. In this paper, we described a prospects and technologies needed in digital convergence environment. And we described a smart city which was leading case in digital convergence.

• Journal of Digital Convergence
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• v.12 no.12
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• pp.323-328
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• 2014

D-MAC protocol is used convergence network, which is designed to connect wireless link between things. This protocol is supported to local data exchange and aggregation among neighbor nodes, and distributed control packet from sink to sensor node. In this paper, we analysis about efficiency of power consumption according to whether or not security authentication of D-MAC in convergence network. If authentication scheme is applied to MAC communication, it is related to power consumption of preamble whether or not with and without authentication process. It is reduced to energy consumption against denial attack of service, when it is applied to authentication. Future work will take the effort to deal with security authentication scheme.

• Journal of Korea Society of Industrial Information Systems
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• v.14 no.5
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• pp.169-185
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• 2009

This study set out to analyze the impacts of convergence products(cell phones, PDAs, IPTV, and portable game consoles) on the consumers' purchase intention and satisfaction. These results of the research model show that usefulness, perceived risk, and communication had significant influences on purchase intention, and usefulness, innovation, perceived risk, and communication on satisfaction. But there were differences according to the product kinds. The results indicate that usefulness, convenience, perceived risk, and communication are the major factors affecting the satisfaction and purchase intention of convergence products and that innovation didn't have much influence on them. And there were small differences among the influential factors according to the kinds of convergence products.

• Journal of the Institute of Convergence Signal Processing
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• v.23 no.2
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• pp.50-61
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• 2022

This work demonstrates the design and evaluation of Aqua-Aware, a lightweight miniaturized light emitting diode (LED) based underwater compact sensor node which is used to obtain different characteristics of the underwater environment. Two optical sensor nodes have been designed, developed, and evaluated for a short and medium link range called as Aqua-Aware short range (AASR) and Aqua-Aware medium range (AAMR), respectively. The hardware and software implementation of proposed sensor node, algorithms, and trade-offs have been discussed in this paper. The underwater environment is emulated by introducing different turbulence effects such as air bubbles, waves and turbidity in a 4-m water tank. In clear water, the Aqua-Aware achieved a data rate of 0.2 Mbps at communication link up to 2-m. The Aqua-Aware was able to achieve 0.2 Mbps in a turbid water of 64 NTU in the presence of moderate water waves and air bubbles within the communication link range of 1.7-m. We have evaluated the luminous intensity, packet success rate and bit error rate performance of the proposed system obtained by varying the various medium characteristics.

• Journal of Digital Convergence
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• v.15 no.5
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• pp.271-280
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• 2017

This study was done to develop a human relation and communication course combined with a convergence communication training program and examine the effects of communication self efficacy, communicative competence, and interpersonal relations in nursing students. The study was designed using a nonequivalent control group pretest-posttest design, data were collected between September 5 and December 13, 2016, Participants were 83 1-year nursing students in 1 College of D City, and were assigned to an experimental group (n=41), or a control group (n=42). The data were analyzed using descriptive analysis, t-test, and ${\chi}^2$ test with the SPSS/WIN 21.0. After receiving the program, difference was observed in communication self-efficacy(t=15.23, p<.001), communicative competence(t=11.42, p<.001), and interpersonal relations(t=19.24, p<.001) of the experimental group. It is expected that these results would be helpful for increasing communication self efficacy, communicative competence, and interpersonal relations in nursing students on human relation and communication course combined with a convergence communication training program.

• Journal of Convergence for Information Technology
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• v.7 no.3
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• pp.147-152
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• 2017

Recently, colleges and universities provide programs of field experience for students to improve career development skills. The purpose of this study was to analyze the effects of participating field experience on communication ability, interpersonal relationship ability, and convergence competence. Data were collected from 1,887 college students, and were analyzed using one-way ANOVA. As a result, students who participated field experience program improved their communication ability, interpersonal relationship ability, and convergence competence. This study is expected to be utilized as basic references to promote field experience program in colleges and universities.