• Review of KIISC
• /
• v.33 no.4
• /
• pp.23-29
• /
• 2023

대부분의 임베디드 시스템은 기계장치와 전자기기 장치가 함께 작동되는 물리 장치로써, 이기종 네트워크, 복잡한 보안체계 등을 고려하여 가상화 기반 사이버훈련 환경이 구성되어야 한다. 또한, 차량을 대상으로 물리적인 실험환경에서 모의침투 등 사이버훈련을 수행한다는 것은 교통사고를 비롯한 안전사고 발생에 있어 위험이 존재한다. 본 논문에서는 가상 개발환경에서의 공격 기반 차량용 사이버훈련 프레임워크를 제안하고자 한다. 먼저, 공격 기반 차량용 사이버훈련 프레임워크의 작동은 자동 활성화되는 가상의 CAN 네트워크 인터페이스로 시작된다. 가상의 CAN 네트워크 인터페이스는 가상 머신에서 간단한 부트스트랩 명령어 실행을 통해 파이썬 패키지와 Ubuntu 서비스 목록 설치 명령이 자동으로 실행되면서 설치된다. 이후 내부 네트워크 시뮬레이터와 공격모듈과 관련된 UI가 자동으로 Ubuntu Systemd에 의해 백그라운드에서 실행되어 시작과 동시에 준비 상태를 유지하게 된다. 사이버훈련 UI 내 공격 모듈은 사용자에 의한 공격 선택 및 파라미터 셋팅 이후 차량의 이상 상태를 사이버훈련 UI에 다시 출력되게 된다. 본 논문에서 제안하는 가상 개발환경 기반의 차량용 사이버훈련 프레임워크는 자율주행 차량 사고의 위험이나 다른 특수한 제약 없이 사용자의 학습 경험을 확장시킬 수 있다. 또한, 기존의 가상화 기반 사이버훈련 교육 콘텐츠와는 달리 일반 사용자들이 접근하기 쉬운 형태로 확장 개발이 가능하다.

• The Journal of the Korea Contents Association
• /
• v.12 no.8
• /
• pp.167-177
• /
• 2012

Recently, with the rapid development of information technology the field of e-book market is growing rapidly. The choice of an e-book device to improve user's comprehension is one of very important elements. The effectiveness evaluation between e-books and paper books has been studied previously, but there have not been progressed actively researches on the size of e-book devices based on user's comprehension. Considering these aspects, we in this paper selected e-book devices such as currently available PDA, netbook, and notebook, and then carried out the experiment about which device has the highest user's comprehension depending on the size of e-book devices. Understanding and memory about the content on the display were set as main factors in order to evaluate user's comprehension. We prepared in advance multiple examples of e-books and English words with similar difficulty, and evaluated user's comprehension through answering questions for each example after doing the experiment. 90 undergraduate students who use most widely e-books participated in the experiment, and the result was analyzed using SPSS statistical package. The experiment result showed that user's comprehension was higher in e-book device with middle size rather than the one with big size in display size.

• The Journal of the Korea Contents Association
• /
• v.20 no.6
• /
• pp.381-391
• /
• 2020

The purpose of this study is to investigate the relationship between meal kit product selection attributes, purchasing behavior, and satisfaction. The sampling of the study was conducted for 1 month for customers who have experience in using meal kit products recently launched by a restaurant company, and 287 copies of the questionnaire were used for analysis. For the hypothesis verification, regression analysis was performed using SPSS 20.0 package. As a result of analysis, first, the meal kit product selection attributes and purchase behavior of Hypothesis 1 have a significant effect on diversity (β = .026) and quality (β = .927). Hypothesis 2, meal kit product selection attributes and satisfaction have a significant effect on convenience (β = .503) and price (β = .121). Third, in the purchasing behavior of Hypothesis 3, the purchasing behavior (β = .561) has a significant effect on satisfaction. Lastly, this study is expected to provide basic data for researchers performing meal kit product related research, and to provide a rationale for suggesting direction for product development in a food service company and using marketing strategies.

• The Journal of the Korea Contents Association
• /
• v.20 no.4
• /
• pp.254-263
• /
• 2020

The purpose of this study is to verify whether there is a mediating effect of social integration in the relationship between the elderly's change of life and satisfaction of care service through the 'Donation Bank of Social Contribution Activities'. The ultimate aim is to improve social values and the quality of life of the senior citizens. In order to achieve the purpose of this study, a survey was conducted focusing on senior citizens using care services from 50 institutions performing Care Bank activities and data of 434 people were finally used for analysis. For the analysis method, frequency analysis, descriptive statistics, correlation analysis and hierarchical regression analysis were applied by using SPSS 25 package program. As a result of the analysis, it was found that the life changes of caring elderly had a significant effect on satisfaction of care service. In addition, the social integration had a statistically significant mediating effect on the relationship between the elderly's change of life and satisfaction with care service. Based on these findings, practical and policy alternatives were discussed to improve the quality of life of senior citizens, and to enhance social integration and satisfaction with care services.

• The Journal of the Korea Contents Association
• /
• v.17 no.6
• /
• pp.452-469
• /
• 2017

The purpose of this study is to examine consumer's cognitive, affective and behavioral responses to in-store's servicescapes in restaurant by confirming the effect of service environment factors such as ambient, layout, interior and auditory on perceived service quality and image as cognitive responses, and the effect of perceived service quality and image on affective satisfaction as affective response, and the effect of affective satisfaction on repurchase intention as a behavioral responses. To this end, the research hypothesis was verified by structural equation model analysis using SPSS 21.0 and AMOS 20.0 statistical packages. The results of study are as follows. First, ambient environment, interior environment and auditory environment had significant influence on perceived service quality, but interior environment had no effect. Second, ambient environment and layout environment had a significant influence on the image, while the interior environment and auditory environment had no effect. Third, perceived service quality had a significant effect on emotional satisfaction, but had no effect on image and repurchase intention. Finally, image had a significant effect on emotional satisfaction and repurchase intention. Therefore, the marketing manager of the restaurant will need to plan and implement a service marketing strategy that will increase consumers' visit by enhance the perceived service quality level by improving ambient environment, layout environment and auditory environment, and increase image by improving ambient environment and layout environment.

• The Journal of the Korea Contents Association
• /
• v.10 no.7
• /
• pp.404-419
• /
• 2010

The purpose of this study is to investigate the causal relationship between cabin attendants' job stress level and job satisfaction, organization commitment and turnover intention in the airline service industry. The study was done by conducting a questionnaire research. 215 questionnaires were distributed to cabin attendants of airlines, and 198 questionnaires of which are utilized for data analysis. The collected questionnaires were analyzed using spsswin 12.0 and Amos 5.0 statistical package for the empirical and statistical analysis. The conclusions were as follows: Firstly, cabin attendants' job stress level had significant negative impact on job satisfaction, but the organization commitment seemed to have a positive impact on overall job satisfaction level. Secondly, job stress didn't affect cabin attendants' organization commitment. The result of the study indicates that there needs to be various way implemented by airline management to dissolve the airline's cabin attendant's overall job stress, in order for the attendants to be satisfied with their job and consequently preventing a high turnover rate in the cabin attendant crew. Finally, the limitations of the study and directions for the future research are presented.

• The Journal of the Korea Contents Association
• /
• v.11 no.12
• /
• pp.190-205
• /
• 2011

The purpose of this study was to investigate the effects of the MICE industrial employee's job stressors on intent to leave and test of the mediating role of job satisfaction and job commitment. For the study, job stressors were defined 3 groups with 7 sub-factors, such as role stressors of role ambiguity, role conflict and role overload, task stressors of job routineness and job heteronomy, organizational stressors of job insecurity and distributive injustice. Data were collected from 303 MICE industrial employees in metropolitan area by structured questionnaires. Collected data were analyzed by AMOS 18.0 and findings are as follows. Firstly, on aspect of total effectiveness, the seven job stressors had harmful effect on intent to leave, especially organizational stressors had more serious effect on intent to leave than role stressors. Secondly, not only job satisfaction and job commitment had meditators role but also influenced on intent to leave directly. Thirdly, role ambiguity had effect on intent to leave indirectly through the job satisfaction, while role conflict and role overload had effect on intent to leave directly, and also indirect effectiveness on it through the job commitment. Fourthly, job routineness and job heteronomy had effected on intent to leave only through the meditators. Not only job insecurity and distributive injustice had influenced on intent to leave directly but also effectiveness on it indirectly through the meditators.

• The Journal of the Korea Contents Association
• /
• v.13 no.3
• /
• pp.381-391
• /
• 2013

The purpose of this study was try to check the change of a subjective evaluation about the life function fitness and health-related quality of life by executing the home support exercise program three times a week for total 16 weeks with elderly women that are order than 70 years old. The experiment group(total : 17 people, mean age : 79.4) and the control group(total : 17 people, mean age : 80.7) live Yeonje-gu in Busan city, and they don't have any physical injury and any inconvenience to move. and they are all composed of elderly women who agree to participate in this study. We carried out an analysis of covariance with SAS 9.2 statistics package. These are the results from it. First, the experiment group showed statistically significant increase(p<.001) in lifting dumbbells, repeatedly standing up and sitting down, 2.24m shuttle running, walking at the same place for 2 minutes. Second, there was no particular effect with the experiment group in flexibility(catching hands with their backs leaned against each other). This result point out that there is a need of supplementation like adding exercise item which can improve flexibility to home support exercise program. Third, there was no particular difference between the experiment group and the control group in 8 sub-factors with the subjective evaluation about health-related quality of life through SF-36. However, there the bodily pain and vitality sub-factors of experiment group was better than that of the control group with p<.10 level, so we considered this result showed us the positive effect slightly.

• The Journal of the Korea Contents Association
• /
• v.13 no.6
• /
• pp.481-495
• /
• 2013

The purpose of this study is to figure out the effects of business startup attributes on customer orientation and business startup performance in the foodservice industry. To achieve this, a survey was carried on 300 entrepreneurs, who are running 5 or more years of restaurants in Seoul, through February 1 to February 28, 2013. The SPSS v. 17.0 statistical package program was used for data analysis. The results were as follows; First, the effect of business startup attributes on the understanding of customers' desires in the foodservice industry showed that business startup funds, business startup location, business startup facilities and business startup products had a significant positive effect on the understanding of customers' desires. Second, the effect of business startup attributes on customer relationship in the foodservice industry showed that business startup funds, business startup facilities and business startup products had a significant positive effect on the customer relationship. Third, the effect of customer orientation on business startup performance in the foodservice industry showed that the understanding of customers' desires and customer relationship had a significant positive effect on the business startup performance. These results suggest that business startup funds, business startup location, business startup facilities and business startup products in the foodservice industry are important, and the customer-oriented understanding of customers' desires and close adherence to customers lead to ultimate performance, supporting a stable management in the long term.

• The Journal of the Korea Contents Association
• /
• v.16 no.10
• /
• pp.206-225
• /
• 2016

This study analyzes the effect of authentic leadership on organizational climate, organizational citizenship behavior, and job performance to suggest the implications behind the growing importance of authentic leadership. In particular, this study substantiates existing arguments that organizational climate moderates the tension between leaders and employees by investigating the mediating effects of organizational climate on the relationship between authentic leadership and job performance. A survey was conducted on employees of various business areas in Korea, and 444 responses were used in statistical analysis which was performed using SPSS/WIN 24.0 and STATA 14.0 statistics package and verified using structural equations. The analysis results showed that 1) authentic leadership has positive effects on organizational climate, organizational citizenship behavior, job performance; 2) organizational climate has positive effects on organizational citizenship behavior and job performance; 3) organizational citizenship behavior has a positive effect on job performance; and 4) organizational climate performs a mediating role in the relationships among authentic leadership, organizational citizenship behavior, and job performance. By including organization climate's mediating effect as a factor in the research on authentic leadership, this study presents a new perspective for future studies on leadership.