• Journal of the Society of Disaster Information
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• v.19 no.4
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• pp.859-868
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• 2023

Purpose: In order to enhance safety, the Korea Navy is making efforts to introduce a safety and health management system and to develop a risk assessment system, while safety accidents keeps occurring. A development plan was proposed through an inspection of the Safety Management System(SMS). Method: To diagnose the Korea Navy's safety management system, changes in the safety environment, documentation system, and safety and health management system operation were reviewed, points to be improved were found, and improvement directions were derived. Result: There is a need for an SMS standard that can present the Korea Navy's safety policy and safety management direction, and a safety program that provides guidelines for implementing it in a standardized manner. To this end, we were able to confirm the feasibility of linking the requirements of the US Navy's SMS and the international standard ISO 45001 standard together with the Korea Navy's safety management system. Conclusion: The Korea Navy's safety management system needs to clearly present safety policies and standards, and have public confidence and effectiveness in safety work through a standard program that can implement them, and for this, the development of a Navy SMS is necessary.

• Journal of Internet of Things and Convergence
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• v.9 no.6
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• pp.83-92
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• 2023

The purpose of this study is to provide a rational management strategy to improve the management performance of companies through intellectual property activities. Through this study, we aim to explore countermeasures to strengthen competitiveness in a changing global environment. A survey of 200 companies was conducted from September 1 to October 30, 2023. Statistical analysis was conducted using frequency analysis, exploratory factor analysis, reliability analysis, correlation analysis, multiple regression analysis, and difference analysis. The conclusions are as follows. First, the impact of intellectual property activities on management performance was found to be creation and utilization. Second, the impact of management strategies on management performance was found to be differentiation strategy, cost advantage strategy, and concentration strategy. Third, cost advantage strategy has a partial mediation effect on the relationship between creation activities and managerial performance of intellectual property activities. Fourth, the differentiation strategy has a partial mediating effect on the relationship between the creation of intellectual property activities and managerial performance. In addition, differentiation strategy has a full mediating effect on the relationship between the utilization of intellectual property activities and performance. Fifth, concentration strategy has a partial mediating effect on the relationship between intellectual property activity utilization and management performance. Sixth, there is a difference between creation activities, protection activities, utilization activities, cost advantage strategy, differentiation strategy, financial performance, and non-financial performance based on venture certification status. As the importance of intellectual property is increasing in the era of technological hegemony, IoT companies will need to improve their management performance through venture certification and strategies utilizing intellectual property in order to secure future competitiveness. Based on this study, we hope that IoT companies will maximize their performance by implementing efficient strategies that consider IP activities.

• Journal of Internet of Things and Convergence
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• v.9 no.6
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• pp.23-28
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• 2023

Windows operating system generates various logs with timestamps. Timestamp tampering is an act of anti-forensics in which a suspect manipulates the timestamps of data related to a crime to conceal traces, making it difficult for analysts to reconstruct the situation of the incident. This can delay investigations or lead to the failure of obtaining crucial digital evidence. Therefore, various techniques have been developed to detect timestamp tampering. However, there is a limitation in detection if a suspect is aware of timestamp patterns and manipulates timestamps skillfully or alters system artifacts used in timestamp tampering detection. In this paper, a method is designed to detect changes in timestamps, even if a suspect alters the timestamp of a file on a storage device, it is challenging to do so with precision beyond millisecond order. In the proposed detection method, the first step involves verifying the timestamp of a file suspected of tampering to determine its write time. Subsequently, the confirmed time is compared with the file size recorded within that time, taking into consideration the performance of the storage device. Finally, the total capacity of files written at a specific time is calculated, and this is compared with the maximum input and output performance of the storage device to detect any potential file tampering.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.22 no.5
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• pp.1-18
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• 2023

With the recent developments in big data and deep learning, a variety of traffic information is collected widely and used for traffic operations. In particular, long short-term memory (LSTM) is used in the field of traffic information prediction with time series characteristics. Since trends, seasons, and cycles differ due to the nature of time series data input for an LSTM, a trial-and-error method based on characteristics of the data is essential for prediction models based on time series data in order to find hyperparameters. If a methodology is established to find suitable hyperparameters, it is possible to reduce the time spent in constructing high-accuracy models. Therefore, in this study, a traffic information prediction model is developed based on highway vehicle detection system (VDS) data and LSTM, and an impact assessment is conducted through changes in the LSTM evaluation indicators for each hyperparameter. In addition, a methodology for finding hyperparameters suitable for predicting highway traffic information in the transportation field is presented.

• Journal of the Korean Society of Radiology
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• v.17 no.5
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• pp.783-790
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• 2023

The term edutech has recently been attracting attention as the convergence of education and technology is emphasized. Schools are also exploring teaching methods using edutech. The purpose of this study is to analyze the satisfaction of 210 radiology students after using Quizn Platform and the difference in satisfaction with Quizn Platform according to general characteristics. The research results are as follows. First, as a result of the satisfaction analysis according to class type, the following order was practical class, theory + practice class, and theory class. Second, the desired teaching methods among theory classes according to general characteristics were core classes (quiz solving), lecture-style classes, discussions, and discussion classes. Third, 'Quizn was used appropriately in class.' had the highest score at 4.27±0.60, and 'I am very interested in this subject.' had the lowest score at 3.98±0.74. Additionally, there was no significant difference in response to the teaching method (p>0.05). Fourth, 'Applying Quizn to class was interesting and fun' showed the highest score at 4.24±0.94, and 'Institutional support must be provided to continue using Quizn at 3.49±0.96. Additionally, there was no significant difference in satisfaction with classes according to gender and age (p>0.05). As a limitation of this study, although we investigated the satisfaction of students using Quizn, we were unable to investigate the satisfaction of instructors who interact with students. In the future, research that considers instructor satisfaction in classes using edutech should be conducted. Universities must provide institutional support and continuous interest until edutech is selected and utilized.

• Journal of Industrial Convergence
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• v.21 no.11
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• pp.1-12
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• 2023

With the recent explosive popularity of SNS, it is increasingly important to utilize SNS marketing, and in this process, the importance of image and caption order in SNS layout is also growing. This research aims to analyze the impact of SNS layouts (Image First vs. Caption First) on the user's attitude toward SNS shopping. A survey was conducted targeting 350 general public and college(graduate) students living in Daegu City and Gyeongbuk Province. The data was analyzed using PROCESS, regression analysis, and t-test by SPSS 21.0 program. The result of this study, it was confirmed that the Image First was more accessible than the Caption First. The Caption First was confirmed to be more diagnostic than the Image First. Moreover, from three specific mediation paths, only two were confirmed, named is through diagnosticity and usefulness, and through accessibility, diagnosticity, and usefullness. The path through diagnosticity and usefulness were stronger than another. Additionally, the impact of accessibility on diagnosticity was found to be higher when involvement was high rather than when involvement was low.

• The Journal of the Convergence on Culture Technology
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• v.9 no.6
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• pp.685-694
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• 2023

This study is a descriptive research study to analyze factors affecting patient safety management activities by identifying shared leadership, organizational communication, and nursing service perceived by nurses to prepare basic data for theoretical and practical information and intervention measures. This study collected data from 155 clinical nurses in C region in G-do from July 17 to July 28, 2023, and a total of 154 copies were finally analyzed. Using the SPSS Win. 25.0 program, technical statistics, t-test, one-way ANOVA, Pearson correlation coefficient, and hierarchical multiple regression were analyzed. As a result of analyzing variables affecting the subject's patient safety management activities with multiple regression using hierarchical selection, the higher the shared leadership, the higher the patient safety management. In order to efficiently perform nursing for nurses' patient safety management activities, research should be continuously conducted to develop specific intervention programs that can support patient safety nursing activities and verify their effectiveness

• The Journal of the Convergence on Culture Technology
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• v.9 no.6
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• pp.1007-1016
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• 2023

In this study, the effect of functional substances such as polyphenols and flavonoids contained in large quantities in red ginseng and herbal medicines on the antioxidant activity properties and flavor effect were investigated by increasing the content and activity of functional ingredients by convert red ginseng through a steaming heat-drying process compared to the traditional dry processing method of ginseng and herbal medicines. According to the experimental results, the addition of pre-heat treatment significantly increased antioxidant properties such as DPPH radical scavenging ability, polyphenols, and flavonoids. In addition, during the steaming and heat-dried red ginseng manufacturing process, the amino-carbonyl browning reaction was promoted, resulting in increased brownness and a savory flavor. However, the content of ginsenosides, the main medicinal ingredient in red ginseng, became the main cause of the bitter and harsh taste. In addition, the bitter and harsh taste of red ginseng has been significantly improved by roasting and producing powder, but on the other hand, Radix Angelicae sinensis, polymorphic angelica and Peony, which are used as main medicinal ingredients in oriental medicine for nutritional tonic prescriptions such as 10 herbal medicine and 4 herbal medicine have a very strong herbal medicine-specific flavor and have a bitter and harsh taste. It is so strong that in order to use it as an instant extraction material, it was reviewed that a steaming and heating manufacturing method was needed during the manufacturing process.

• The Journal of the Convergence on Culture Technology
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• v.9 no.6
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• pp.715-720
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• 2023

This study aims to select ESG items from a consumer perspective and examine the influence of these factors on corporate image and corporate reputation. ESG-related research tends to be conducted from a corporate or investment perspective. However, based on their evaluation of ESG activities, consumers form corporate image and corporate reputation. Accordingly, the E, S, and G evaluation items were applied from the consumer's perspective to analyze the impact of each item. As a result of the study, the impact on corporate image was found to be in the order of transparent management, support for small and medium-sized businesses, and response to climate change. The results of corporate reputation analysis showed transparent management, response to climate change, and support for small businesses. From the consumer's perspective, activities related to a company's response to climate change are considered a corporate obligation, and demands for coexistence and transparent corporate management of small and medium-sized businesses are growing. The significance of this study is that ESG requires environmental management, symbiotic management, and transparent management from a consumer point of view, suggesting that transparent corporate management is the most important factor. In addition, it suggests that communication with consumers of companies requires communication not only in the environmental area, but also in the social and governance areas.

• The Journal of the Convergence on Culture Technology
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• v.9 no.6
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• pp.57-66
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• 2023

Purpose: This study is a descriptive research study to identifying the factors affecting the continuity of educational service of pre-service teachers. Methods: The data collection period was from March 1 to 30, 2023. Self-efficacy, pro-sociality, work preference, and continuity of educational service were investigated for 90 pre-service teachers at two universities in G Metropolitan City. For the analysis of the collected data, IBM SPSS/Win 26.0 was used, and descriptive statistics, ANOVA, Pearson correlation, and multiple regression analysis were performed. RESULTS: As a result of the study, it was found that there was a difference in educational service continuity according to age and major (p<.05). As a result of examining the correlations among work preference, self-efficacy, pro-sociality, and educational service continuity, all four variables had positive correlations (p<.05). As a result of multiple regression analysis to find out which variables had an effect on the continuity of educational service, extrinsic motivation and pro-sociality showed significant results, and the explanatory power of the two variables to explain the continuity of educational service was 57.4%. Discussion: Based on the results of this study, it is thought that it is necessary to develop and apply various programs that can strengthen extrinsic motivation and pro-sociality in order to increase the continuity of educational service.