• Journal of Digital Convergence
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• v.11 no.7
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• pp.225-235
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• 2013

The purpose of this study is to investigate the Expected factors on the quality of life and its degree of elders in urban regions. Survey was conducted among 300 elders age of over 65, who attended four schools for elders at Busan metropolitan city in the month of October 2 to October 25, 2012 and data were collected 245 samples. Data analysed by using correlation analysis and multi-regression analysis to recognize the degree of the quality of life of elders and the result showed the expected factors on the quality of life and its major were as follows: First, average score of the quality of life of urban elders was 3.17 (5 scores of scale) and it indicated the medium result; Second, between sub-areas of the quality of life of subjects, significant positive relation was shown among every area excluding depression area;Third, the factors mostly influencing on the quality of life are mental health, social relation, and physical relation in order and it showed a significant level (p<0.001). The study revealed the symptoms of depression which reltaed to mental health, it indicated as a major factor to the quality of life, this study suggest there is requirement of nursing intervention and the application of health program to reduce the depression.

• Journal of Digital Convergence
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• v.18 no.10
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• pp.233-238
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• 2020

In the cloud environment, IoT devices using sensors and wearable devices are being applied in various environments, and technologies that accurately determine the information generated by IoT devices are being actively studied. However, due to limitations in the IoT environment such as power and security, information generated by IoT devices is very weak, so financial damage and human casualties are increasing. To accurately collect and analyze IoT information, this paper proposes a topographic information-based key management technique that considers IoT information errors. The proposed technique allows IoT layout errors and groups topographic information into groups of dogs in order to secure connectivity of IoT devices in the event of arbitrary deployment of IoT devices in the cloud environment. In particular, each grouped terrain information is assigned random selected keys from the entire key pool, and the key of the terrain information contained in the IoT information and the probability-high key values are secured with the connectivity of the IoT device. In particular, the proposed technique can reduce information errors about IoT devices because the key of IoT terrain information is extracted by seed using probabilistic deep learning.

• Journal of Korean Tunnelling and Underground Space Association
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• v.22 no.2
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• pp.155-170
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• 2020

In this paper, a risk management system applicable to NATM tunneling projects is proposed. After investigating case histories in NATM tunnel collapse, this paper analyzes the potential risk factors and their corresponding risk events during NATM tunnel construction. The risk factors are categorized into three groups: geological, design and construction risk factors. The risk events are also categorized into four types: excessive deformation, excessive deformation with subsidence, collapse inside tunnels, and collapse inside tunnels with subsidence. The paper identifies risk scenarios in consideration of the risk factors and proposes a risk analysis/evaluation method for the NATM tunnel risk scenarios. Based on the evaluation results, the optimal mitigation measure to handle the risk events is suggested. In order to effectively facilitate a series of risk management processes, it is necessary to develop a risk register and a management ledger for risk mitigation measures that are customized to NATM tunnels. Lastly, the risk management for an actual NATM tunnel construction site is performed to verify the validity of the proposed system.

• International Commerce and Information Review
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• v.15 no.1
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• pp.227-256
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• 2013

Existing multinational subsidiary typologies seem to have limitations in two respects. First, the prevalence of subsidiary classification along two-dimensions fails to capture many distinct subsidiary types. Failure to reflect a sufficient richness in dimensionality can give rise to a partial picture of subsidiary typologies in the international business literature. A new typology developed from multi-dimensional approach will be required for reflecting various subsidiary roles in the multinational enterprise. Second, multinational subsidiary performing a number of activities is hard to be defined functionally across the value chain activities. In addition, multinational subsidiary roles can vary dramatically. In conclusion, despite a growing amount of work on subsidiary typologies, there seems to be limited convergence of results. the study regarding subsidiary roles still remain a challenge. In this respect, the purpose of this study is to develop a new typology based on multi-dimensional approach in order to overcome the limitations of traditional typologies. To classify subsidiary types, we propose 8 types of multinational subsidiary according to three dimensions that are adopted: (1) number of required value chain activities (2) subsidiary's sourcing capability and autonomy (3) global orientation (3) The case study analyzing Korean foreign subsidiaries appropriate for 8 types is performed to establish the validity of this study.

• Journal of Digital Convergence
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• v.10 no.7
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• pp.23-29
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• 2012

This study organizational commitment and performance certification could affect vocational trainees for general characteristics of the demographic analysis, and variables according to the learned the difference between organizational commitment, and the result was as follows. First, in males than in females, ages 20s high school education level and marital status were higher in the unmarried than married. Second, vocational training pathways and variance analysis on age 20 in 16 patients (31.4%), 30, 14 (27.5%), 40 (33.3), 50 3 patients (5.9%), 60 1 (2.0%) and were followed in the order of 5-6 hours for a long time trainees prefer to be educated, and female than in male emotional and normative commitment to organizational commitment in the show were high. Ages 40 and an organizational commitment in their 20s and 50s was higher than 30. Qualifications and training satisfaction satisfaction appeared to influence normative commitment certification training influences organizational commitment. However, certification and satisfaction on organizational commitment (-) does not affect the present study showed the figures shown in the policy implications of the authorities gave is preparing to have meaning.

• Journal of Digital Convergence
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• v.14 no.7
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• pp.155-166
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• 2016

In accordance with the increase of the importance of information security, organizations are making continuous investments to develop policies and adapt technology for information security. Organization should provide systemized support to enhance employees' security compliance intention in order to increase the degree of organization's internal security. This research suggests security policy goal setting and sanction enforcement as a method to improve employees' security compliance in planning and enforcing organization's security policy, and verifies the influencing relationship of Theory of Planned Behavior which explains employee's security compliance intention. We use structural equation modeling to verify the research hypotheses, and conducted a survey on the employees of organization with information security policy. We verified the hypotheses based on 346 responses. The result shows that the degree of goal setting and sanction enforcement has positive influence on self-efficacy and coping efficacy which are antecedents that influence employees' compliance intention. As a result, this research suggested directions for strategic approach for enhancing employee's compliance intention on organization's security policy.

• Journal of Digital Convergence
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• v.14 no.7
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• pp.461-473
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• 2016

The purpose of this study is to analyze cognition of applicants about the national sports coaching certificate examination. In order to collect data an online survey was conducted against those who attended the practical and oral examination for the sports coaching certificate. SPSS Version 18.0 was used to analyze frequency of the collected 2,895 samples, the factors of measuring methods in the study, difference of applicants' cognition on the certificate system, and difference of applicants' cognition on the practical and oral examination. Results from this study indicates that the applicants' cognition on the sports coaching certificate system differs according to ages, educational levels, and sports related majors at college, and that the applicants' cognition on the practical and oral examination for the sports coaching certificate is also different according to gender, age, educational level, and sports related majors at college. This study suggests development directions for the future sports coaching system by comprehending of the study results.

• Journal of Digital Convergence
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• v.14 no.7
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• pp.309-319
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• 2016

There is a need to develop a data quality management algorithm in order to improve the quality of health care data. In this study, we developed a data quality control algorithms associated diseases related to diabetes in patients with hypertension. To make a data quality algorithm, we extracted hypertension patients from 2011 and 2012 discharge damage survey data. As the result of developing Data quality management algorithm, significant factors in hypertension patients with diabetes are gender, age, Glomerular disorders in diabetes mellitus, Diabetic retinopathy, Diabetic polyneuropathy, Closed [percutaneous] [needle] biopsy of kidney. Depending on the decision tree results, we defined Outlier which was probability values associated with a patient having diabetes corporal with hypertension or more than 80%, or not more than 20%, and found six groups with extreme values for diabetes accompanying hypertension patients. Thus there is a need to check the actual data contained in the Outlier(extreme value) groups to improve the quality of the data.

• Journal of Digital Convergence
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• v.14 no.7
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• pp.103-115
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• 2016

This study examines the relationship among family restaurants' service guarantee, service quality, service value, customer satisfaction and customer loyalty, involvement to verify the marketing effectiveness of service guarantee in family restaurants. For the empirical analysis, a survey was conducted with 250 adults in Seoul and Gyeonggi. For the collected data, frequency analysis, reliability analysis, factor analysis were carried out, using SPSS 21.0, in order to verify reliability and validity. And multi regression analysis, hierarchical analysis were used for hypothesis test. According to this study result, first, service guarantees were shown to have a positive effect on service quality, service value and customer loyalty. Second, service quality had a positive effect on customer satisfaction. Third, service value had a positive effect on customer satisfaction. Fourth, customer satisfaction had a positive effect on customer loyalty. Fifth, in the relationship between service guarantees and customer loyalty, involvement played a moderating role. Therefore this study has verified the marketing effectiveness of service guarantee in family restaurants, so it can be said that the study has drawn strategic operation methods in family restaurants.

• Journal of Digital Convergence
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• v.11 no.10
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• pp.557-569
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• 2013

This study was conducted to identify factors related to subjective happiness Index and by analyzing students, health behavior, smart phone addiction, suicidal Ideation, and in order to develop appropriate measure tp prevent suicide among university students. Methods: From November 19, 2012 until December 14, 2012, 300 college students from one of the iniversities located at K city were surveyed. Data were analyzed using with SPSS window 18.0. Results: The mean score for college students' subjective happiness Index was 4.58 on a scale of 7. There were significant differences on the Subjective happiness Index for the following areas: sex, parental survival & living and household monthly income. There was a negative correlation among the subjective happiness Index, smart phone addiction, suicidal Ideation. Conclusion: Results indicate that factors influencing Subjective happiness are smart phone addiction, suicidal ideation. We suggest that need to establish policies providing family support, smartphone addiction prevention program suicide prevention program to improve a level of happiness.