• 한국체육학회지인문사회과학편
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• v.57 no.2
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• pp.279-289
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• 2018

The purpose of this study is to investigate features of leisure and recreation scholarship study in The Korean Journal of physical education based on co-authors network and topic modeling through using Word Cloud and LDA Topic Modeling(Latent Dirichlet Allocation). The data collected for this study are 2,697 papers published online from January 2008 to March 2017 on the Korean journal of physical education. Respectively ordered analysis targets are the major author, author of correspondence, co-author 1, co-author 2, co-author n in related document to explore studies' trends using the 369 documents. As a result, the co-author network analysis result found that 451 were linked to the research network, on average researchers had 1.52 relationships and the average distance between researchers was 2.33. The Representative author's concentration of connection was ranked high in the order of the following, Lee. K. M., Hwang. S. H., H., Lee. C. S., and proximity centers were shown in Seo K. B., Han. J. H., Kim. K. J. Finally, parameter-centric features appeared in order of Lee. C. W. and Seo. K. B. was most actively connected between the researchers of the leisure-related academic papers. Future research needs discussions among scholars regarding the trend and direction of future leisure research.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.38 no.6
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• pp.949-955
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• 2018

While demand for construction engineering education at Cyber University is growing rapidly in a short period of time, there is a lack of research and evaluation on whether or not to develop in terms of quality. The purpose of this study is to identify the characteristics and motivation of the new and transfer students of the department of Construction Engineering at Cyber university and to identify areas that will be complemented in construction engineering education and to provide guidelines for providing better education through satisfaction survey on current education of new students, students and graduates of Cyber University. For the development of construction engineering education at cyber universities, the content of education needs to be differentiated from that of offline universities. In addition, new and transfer students should be able to achieve their goal of obtaining certificates and be provided with satisfactory education to become professional engineers. For students with diverse goals, a wide range of subjects ranging from basic to specialized courses should be provided so that they can select subjects that suit their goals.

• Journal of Korea Society of Digital Industry and Information Management
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• v.17 no.4
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• pp.43-52
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• 2021

IoT applications are quickly spread in many fields. Blockchain methods(BC), defined as a distributed sharing mechanism, offer excellent support for IoT evolution. The BC provides a secure way for communication between IoT devices. However, the IoT environments are threatened by hacker attacks and malicious intrusions. The IoT applications security are faced with three challenges: intrusions and attacks detection, secure communication, and compressed storage information. This paper proposed a system based on double-blockchain to improve the communication transactions' safety and enhance the information compression method for the stored data. Information security is enhanced by using an Ellipse Curve Cryptography(ECC) considered in a double-blockchain case. The data compression is ensured by the Compressed Sensing(CS) method. The conducted experimentation reveals that the proposed method is more accurate in security and storage performance than previous related works.

• Journal of Korea Society of Digital Industry and Information Management
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• v.15 no.1
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• pp.61-66
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• 2019

FinTech has expanded to the extent that not only businesses but almost everyone can feel the impact. The spread of the scope of use has introduced a variety of new financial services that are changing the way we live. In these environments, it is important to develop reliable security measures to protect against cyber attacks. The number of mobile financial transactions in the financial sector is also increasing, making security vulnerable. In this study, we studied security through mutual authentication method that can safely handle financial security and focused on FinTech's security processing through multi-party mutual authentication method that strongly prevents leakage of information even in the event of continuous and sophisticated attacks.

• Journal of Korea Society of Digital Industry and Information Management
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• v.15 no.3
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• pp.197-206
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• 2019

Telemarketing has been used in finance due to the reduction of offline channels. In order to select telemarketing target customers, various machine learning techniques have emerged to maximize the effect of minimum cost. However, there are problems that the class imbalance, which the number of marketing success customers is smaller than the number of failed customers, and the recall rate is lower than accuracy. In this paper, we propose a method that solve the imbalanced class problem and increase the recall rate to improve the efficiency. The hybrid sampling method is applied to balance the data in the class, and the stacked deep network is applied to improve the recall and precision as well as the accuracy. The proposed method is applied to actual bank telemarketing data. As a result of the comparison experiment, the accuracy, the recall, and the precision is improved higher than that of the conventional methods.

• Journal of Korea Society of Digital Industry and Information Management
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• v.16 no.4
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• pp.67-74
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• 2020

As the information age develops, Online education and Non-face-to-face work are becoming common. Telecommuting such as tele-education and video conferencing through the application of information technology is also becoming common due to the COVID-19. Unexpected information leakage can occur online when the company conducts work remotely or holds meetings. A system to authenticate users is needed to reduce information leakage. In this study, there are various ways to authenticate remote access users. By applying burn authentication using a biometric system, a method to identify users is proposed. The method used in the study was studied the main component analysis method, which recognizes several characteristics in facial recognition and processes interrelationships. It proposed a method that can be easily utilized without additional devices by utilizing a camera connected to a computer by authenticating the user using the shape and characteristics of the face by using the PCA method.

• American Studies
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• v.43 no.2
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• pp.27-56
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• 2020

This paper attempts to interpret the meaning of nine gams in Herman Melville's Moby-Dick. It approaches the topic from an organizational identity perspective. It is the theory which asserts the importance of the reference group in the formation of group members' organizational identity. This paper views the gams as the reference groups for the sailors of the Pequod and shows what meanings or questions each gam presents to them. It divides the nine gams into three groups according to their functions in the organizational sense. This paper argues that the extremely dangerous quest of the Pequod is not led by the captain only, but the sailors, who are given many chances to make their decisions after having gams, eventually choose to obey and follow their leader. The tragic end is partly what they choose, after all.

• Journal of the Korea Safety Management & Science
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• v.25 no.2
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• pp.39-48
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• 2023

Recently, the crisis of demographic extinction is rising in Korea more than any other country, and it is difficult for industrial sites to maintain without 'foreign workers'. Industrial accidents and accident deaths of foreign workers account for 7.6% and 12.3% of the total, through an in-depth analysis of fatal accidents in the manufacturing industry, differences and similarities between fatal accidents of foreign workers and all fatal accidents were confirmed in terms of occurrence type, workplace size, length of service, employment type, etc. In this study, customized countermeasures were found.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.05a
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• pp.33-34
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• 2023

성장하는 빅 데이터 시장과 빅 데이터 수의 기하급수적인 증가는 기존 컴퓨팅 환경에서 데이터 처리의 어려움을 야기한다. 특히 이미지 데이터 처리 속도는 데이터양이 많을수록 현저하게 느려진다. 이에 본 논문에서는 Apache Spark와 OpenCV를 활용한 분산 클러스터 컴퓨팅 환경의 대용량 이미지 머신러닝 시스템을 제안한다. 제안하는 시스템은 Apache Spark를 통해 분산 클러스터를 구성하며, OpenCV의 이미지 처리 알고리즘과 Spark MLlib의 머신러닝 알고리즘을 활용하여 작업을 수행한다. 제안하는 시스템을 통해 본 논문은 대용량 이미지 데이터 처리 및 머신러닝 작업 속도 향상 방법을 제시한다.

• Korean Journal of Childcare and Education
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• v.15 no.4
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• pp.37-57
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• 2019

Objective: The purpose of this study was to examine the sequential mediating effects of self-esteem and positive peer play interaction between warmth parenting and the social competence of preschoolers. Methods: The 7th wave of the Panel Study on Korean Children(2014) was used to analyze 1,113 preschoolers. Sequential mediation effects were analyzed using SPSS Process Macro(Hayes, 2013). Results: Warmth parenting indirectly affected preschooler's social competence (cooperation, assertion, self-control) by yielding sequential mediation effects on self-esteem and peer play interaction. Namely, warmth parenting does not directly affect social competence but does have a significant effect on preschooler self-esteem, which positively affected peer play interaction. This path increases the social competence(cooperation, assertion, self-control) of preschool children. Conclusion/Implications: In order to increase the social competence (cooperation, assertion, self-control) of preschool children, it is important for the preschooler to consider themselves a worthy person and to learn positive interaction techniques through warmth parenting.