• Convergence Security Journal
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• v.21 no.4
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• pp.15-22
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• 2021

Security of voice communication content in the military's voice communication network will be essential. There is no proposed study on voice data security of military communication networks, but security of voice data will be essential when communicating. This paper is about to an encryption/decryption technique of digital voice data to provide security in case of voice calls in a military communication network. In addition, by using a symmetric key algorithm using AES, a secret key is required, and it has the function of transmitting this key to the receiving end before setting it as a voice call, solving the difficulty of distributing the secret key. This paper proposes a security technique for digital voice data that applies a synchronous stream encryption method that is relatively easy to restore synchronization even in the event of loss of synchronization among stream encryption techniques.

• Journal of Digital Convergence
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• v.12 no.12
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• pp.129-137
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• 2014

The purpose of this study is to understand major factors of site selection of convenience stores in Busan and Gyeong-nam Region. This will be done by analyzing correlations of sale, profit and localization factors and choosing the major correlation factors out of them and carrying out regression analysis to analyze each factor's influence extent. the competition factor : It is shown that the competition factor has significant result with the sale and the profit and the effect of that is proved the biggest among all location requirements. Therefore, the competition factor is the most important factors above all. By providing recently standards and implications of site selection of stores, this study suggests a guideline for site selection not only to prep entrepreneurs and store developers but also prep entrepreneurs of retail store.

• Journal of Digital Convergence
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• v.16 no.3
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• pp.101-111
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• 2018

The purpose of this study is to discover the relationship of intrapreneurship, open innovation and organizational performance. For the empirical analysis, data were collected from convenient sample of 310 employees at small and medium enterprises in Busan. All collected data were analyzed using with SPSS 21. The results of this research as followed: firstly, the relationship between the intrapreneurship and the inbound open innovation is positively related. Secondly, there was a partial positive correlation between the inbound open innovation and the organizational performance. Finally, the open innovation played as a partial mediator on the relationship between the intrapreneurship and the organizational performance. Based on these results, researcher suggest the limitations of the study and directions for future studies.

• Journal of Digital Convergence
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• v.18 no.5
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• pp.269-277
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• 2020

The purpose of this study is to identify the factors affecting Health-related Quality of Life of Elderly in Busan. Then this study would like to present basic data that can be used in research into specific measures to improve Health-related Quality of Life of Elderly in Busan. The subjects of this study were a total of 3452 elders aged 65 or higher in 2016 Community Health Survey. Data were analyzed using descriptive statistics, Mann-Whitney U test, Kruskal-Wallis test and multiple linear. The results showed that subjective health status perception, depression, stress, education level, the national basic livelihood security, sleep duration, BMI, Marital status, hypertension were found to be the influencing factors of subjective happiness and explained 28.8% of Health-related Quality of Life.

• Journal of Digital Convergence
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• v.19 no.10
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• pp.427-434
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• 2021

This paper aimed to reveal the needs and intentions of the people with developmental disabilities through AAC for supporting their independent living in the community and furthermore to contribute to realizing an inclusive community. From August 7 to September 11, 2020, trained researchers conducted 1to1 interviews(AAC) with 74 people recommended by specialized institutions. Data were analyzed by frequency-analysis, Chi-square-analysis and T-test using SPSS 25.0. As a result, the creation of community-level conditions(ex. housing and employment) and job aptitudes and preferences are important for the independent living and expectations and desires for social participation were high. It is different from the previous survey results through agents. It means the policy for the developmentally disabled should be based on their needs and aim for 'living in the community as a community member'. Based on these results, the implications of supporting decision-making for the ordinary lives of people with developmental disabilities were suggested.

• Journal of Digital Convergence
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• v.19 no.12
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• pp.597-604
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• 2021

The purpose of this study is a descriptive research to investigate the difference between career preparation behavior and major satisfaction level according to whether or not nursing students have taken career courses for nursing students to mke rational career choices. The participants were 221 nursing students. Data collection was conducted from December 1 to 15, 2019. The data was analysis with frequency and percentage, 𝛘²-test, mean and standard deviation and ANCOVA by using SPSS/WIN 20.0 program. The results were of this study showed that carrier preparation behavior(F=438.08, p<.001), Major Satisfaction(F=461.45, p<.001) have been confirmed significant difference depend on attending to college career course therefore, it is suggested to use career courses as a strategy to help nursing students make successful career decisions.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.137-145
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• 2018

The purpose of this study is to identify the CSR activities and to investigate the relationship between CSR activities and business performance. Specifically, we analyzed the companies that were included in the SRI index as CSR activity companies, and analyzed how they affect the business performance of the companies according to SRI index incorporation disclosure. As a result of the analysis, the SRI index incorporation announcement has a significant positive effect on the corporate value(Tobin's Q) but it has not significant effect on the financial performance(ROA). This suggests that CSR activities are offered to companies' managers and stakeholders as a basis for investment rather than expense. In the future research, it will be more meaningful if the study on the intention to participate in CSR activities is conducted based on this study and previous studies.

• Journal of Digital Convergence
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• v.17 no.4
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• pp.107-114
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• 2019

This study analyzes the effect of the accuracy of future management performance, which managers voluntarily announce in the previous year's disclosure, on managers compensation. In the case of a company that disclosed the bad news in the previous year, the ability to predict uncertain future will be more important, and expects executives with better predictability to receive more compensation. The results of this study show that there is a significant negative(-) relationship between the accuracy of the manager's earnings forecast and the performance - compensation of the firms that disclosed the bad news in the previous year. The accuracy of the manager's disclosure is important, and it is confirmed that the manager's compensation increases as the incentive of the manager's effort to reduce future uncertainty. The results of this study are as follows: there is a positive relationship between the managerial performance and the managerial competence of managers. It is important to note that there is a difference and that we have identified additional determinants of the manager compensation contract.

• Journal of Digital Convergence
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• v.19 no.2
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• pp.51-60
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• 2021

In this study, Based on the analysis of the correlation between internal control quality and earnings management, this article discusses the correlation between internal control quality and real activity earnings management and accrued earnings management. For this study, by introducing the concept, classification, measurement method and model of internal control and earnings management, the research hypothesis of this article was proposed. In this analysis, Use the relevant measurement model to calculate the actual activity earnings management level and accrued earnings management level of the enterprise, as the explained variable, establish a model for regression and were analyzed. Also, this study could find the final results draws a conclusion through empirical research: there is a significant negative correlation between the internal control quality of listed companies, real activity earnings management, and accrued earnings management. On the basis of this conclusion, the analysis of possible causes provides a basis for the development of internal control theory and the supervision and control of earnings management behavior in the future.

• Journal of Digital Convergence
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• v.18 no.12
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• pp.171-182
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• 2020

This study was intended to analyze the effects of Entrepreneurship on manufacturing(G-automobile) employees' Organizational Culture and Job satisfaction. A proposed model based on previous research was empirically tested via SPSS 25.0 using 349 valid samples collected from current employees of G-automobile Enterprises in Chang Won. The results of the empirical analysis are summarized as follows. First, Entrepreneurship(Innovativeness, Proactiveness, Risk-taking) had direct effects on Job satisfaction. Second, Entrepreneurship(Innovative, Enterprising, Risk-sensitive) had direct effects on Organizational Culture. Third, as a result of analyzing the effect of Organizational Culture on Job satisfaction, it was found that Organizational Culture(Development Culture, Rational Culture) had a significant positive(+) effect on Job satisfaction. The results of this empirical analysis are considered to be related to the rigid organizational culture of automobile manufacturing companies with many male-oriented field workers. In the future, research involving other automobile manufacturers is expected to be needed.