• Journal of the Korea Society of Computer and Information
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• v.27 no.7
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• pp.187-194
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• 2022

LNG is known as the transitional energy source for the future eco-friendly, attracting enormous market attention due to global eco-friendly regulations, Covid-19 Pandemic, Russia-Ukraine War. In addition, since new LNG suppliers such as the U.S. and Australia are also diversifying, the LNG spot market is expected to grow. On the other hand, research on the LNG transportation market has been marginalized. Therefore, this study attempted to predict short-term LNG 160K spot rates and compared the prediction performance between artificial neural networks and the ARIMA model. As a result of this paper, while it was difficult to determine the superiority and superiority of ARIMA and artificial neural networks, considering the relative free of ANN's contraints, we confirmed the feasibility of ANN in LNG 160K spot rate prediction. This study has academic significance as the first attempt to apply an artificial neural network to forecasting LNG 160K spot rates and are expected to contribute significantly in practice in that they can improve the quality of short-term investment decisions by market participants by increasing the accuracy of short-term prediction.

• The Journal of Korean Physical Therapy
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• v.34 no.5
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• pp.198-204
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• 2022

Purpose: This paper sought to classify, analyze, and investigate domestic research papers on the physical rehabilitation of children with cerebral palsy, and to suggest a direction for rehabilitation after the coronavirus disease 2019 (COVID-19) pandemic. Methods: A literature search was conducted from June 1 to June 30, 2022, and only papers published in domestic journals during the past 10 years were searched. The main search term was "rehabilitation for children with cerebral palsy", and "rehabilitation" such as "exercise rehabilitation," "equestrian rehabilitation", and "aquatic rehabilitation" were reviewed when they appeared in the titles and abstracts. A total of 18 books were selected according to the exclusion criteria. Results: Rehabilitation by area was divided into exercise rehabilitation, Bobath rehabilitation, equestrian rehabilitation, and aquatic rehabilitation. Analysis was undertaken based on the period of rehabilitation, area wise from 2012 to 2017, except for aquatic rehabilitation, which was studied once in 2020. The intervention effects of exercise rehabilitation were summarized as PICO (Participants, Intervention, Comparison, Outcome), and most of the studies showed improvements in the subject's physical functions. Conclusion: Research on the physical rehabilitation of children with cerebral palsy is being conducted in multiple directions and through several methods. In addition to the Bobath and Vojta approaches, equestrian rehabilitation, aquatic rehabilitation using the buoyancy of water, and computer rehabilitation are conducted. For the physical rehabilitation of children with cerebral palsy in the context of COVID-19, programs that are linked with families and those that incorporate Information Communications Technology (ICT) could be developed.

• The Journal of the Korea Contents Association
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• v.22 no.1
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• pp.23-34
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• 2022

Due to the regular usage of face masks during the COVID-19 pandemic, many people developed skin issues. As a result, interest in skin care which can be performed independently at home has increased. The purpose of this study is to design a customized home beauty care device to respond to these market trends. In order to do so, the double diamond model was applied in the design thinking process, and the design development process proceeded in the order of discovery, definition, development, and delivery. This study is meaningful in that it focused on the user-centered design development approach by fusing design thinking processes rather than styling-oriented design processes, and suggested new possibilities for design development using information based on the data measured.

• Journal of Korea Port Economic Association
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• v.38 no.1
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• pp.15-29
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• 2022

The Korean logistics industry is in a double challenges to train logistics professional in terms of quantity and quality. The study aims to derive implications for the logistics professional training policy and present the capabilities and skills of logistics manpower necessary in the Industry 4.0. To this end, the supply and demand status of logistics personnel was examined through a full survey of logistics curriculum of domestic universities, case analysis of successful overseas logistics education and training programs was attempted, and the skills and capabilities for logistics professional were comprehensively presented through in-depth literature research. As a policy recommendations for future training and education of logistics professional following policies are suggested; necessity of national standard logistics competency map and integrated platform for national logistics capabilities/skills development, creation of industry-university co-education/training ecosystem and education programs for new logistics professional in response to digital transformation and COVID-19 pandemic.

• The Journal of the Korea Contents Association
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• v.22 no.1
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• pp.431-443
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• 2022

The purpose of this study is to share and assess the experiences of the emergency remote teaching method adopted for the medical communication course at a medical school due to the COVID-19 pandemic. The standardized patients hired for this 'Emergency Remote Teaching (hereafter ERT)' course said that students' interactions with them were less enthusiastic and less realistic, However, in the one-on-one virtual practice, the students seemed to be more focused than in the existing face to face practice. There were no differences in the unit practice test scores between ERT and the face-to-face course while in the face-to-face final exam, the test scores of FTF students were statistically higher than those of the ERT students, which might have resulted from the different methodologies of teaching. Further research on the virtual medical communication course is necessary to prepare medical students for the adoption of the telemedicine which could be accelerated in the near future.

• Korean Medical Education Review
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• v.24 no.3
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• pp.205-214
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• 2022

The purpose of this study was to analyze the results of a study on the psychological state, lifestyle, self-management ability, and academic adaptation of medical students, and to present examples of improvement of a student support center based on the results. A medical school in Daegu has been surveying the living conditions of students every year for 6 years since 2016. More than 60% of medical students experienced depression and more than 70% experienced stress, but these rates have significantly improved over the past 5 years. There were many cases of drinking or smoking to relieve stress, but the frequency of drinking recently decreased substantially. Some students had difficulties in emotional regulation (11.5%) and time management (16.6%), and challenges in planning and self-management increased significantly during the coronavirus disease 2019 (COVID-19) pandemic. The satisfaction and adaptability of medical students are high, but the number of students who are not satisfied with but negative response rate is 2%-3% in every year. However, satisfaction has significantly increased in tandem with curriculum changes and COVID-19. Based on these data, the counseling system was reorganized to support psychological stability, the medical humanities curriculum was improved, and changes in actual quality of life were induced by developing and operating non-curricular programs. Furthermore, standardized questionnaires will be developed and data from many medical schools will be shared, which is expected to support medical students more effectively.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.23 no.1
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• pp.203-207
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• 2023

Recently, real-time streaming services are gaining popularity among the MZ generation and the market size is continuously growing. Pre-recorded and edited videos only show one-way communication, but real-time streaming services have the advantage of responding immediately to questions and requests from users, as they enable two-way communication. With the transition from face-to-face culture to non-face-to-face culture due to the COVID-19 pandemic, the number of users communicating in real-time video for activities such as classes, meetings, and leisure has dramatically increased. However, as real-time streaming services become more active and diverse generations participate, there is a problem of conflicts arising from language differences, including the use of neologisms. To address this issue, this paper proposes a method of collecting the meaning of neologisms through the Wikipedia API and presenting them to each other, so that they can understand each other's intentions.

• Informatization Policy
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• v.29 no.4
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• pp.67-90
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• 2022

The March 2022 presidential election held at the peak of the COVID-19 pandemic drew flak for undermining the principle of universal suffrage by failing to guarantee properly the voting rights of confirmed and quarantined persons. Guaranteeing their voting rights requires thinking about e-voting that can fundamentally overcome the temporal and spatial limitations of current paper voting polling stations. The question is how to deal with the increased possibility of contradicting or violating the principles of equality and direct and secret suffrage due to the expansion of universal suffrage. In order to obtain implications for this, we looked at the case of Estonia, which has been holding 11 national elections without any problems since the introduction of e-voting in 2005. Estonia was successfully building trust in the system, government, and society through the institutionalization and routinization of the overall socio-technical system of e-voting, along with political and constitutional agreements on the principles of elections. Therefore, we should not only consider the possibility of e-voting in terms of technological development and level but also discuss the establishment of trust by mediating conflicts between election principles from a normative point of view to reach a social consensus.

• Journal of Plant Biotechnology
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• v.48 no.4
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• pp.289-303
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• 2021

Covid-19 is an ongoing pandemic as we speak in 2022. This infectious disease is caused by the SARS-CoV-2 virus, which infects cells by binding to the angiotensin-converting enzyme 2 (ACE2) receptor on the cell surface. Thus, strategies that inhibit the binding of SARS-CoV-2 to the ACE2 receptor can stop this contagion. Hanjeli (Coix lacryma-jobi) essential oil contains many bioactive compounds, including dodecanoic acid; tetradecanoic acid; 7-Amino-8-imino-2-(2-imino-2H-chromen-3-yl); and 1,5,7,10-tetraaza-phen-9-one. These compounds suppress viral replication and may prevent Covid-19. Accordingly, this study assessed whether, these four limonoid compounds can block the ACE2 receptor. To this end, their physicochemical properties were predicted using Lipinski's "rule of five" on the SwissADME website, and their toxicity was assessed using the online tools ProTox and pkCSM. Additionally, their interactions with the ACE2 receptor were predicted via molecular docking using Autodock Vina. All the four compounds satisfied the "rule of five" and tetradecanoic acid was predicted to have a higher affinity than the comparison compound remdesivir and the original ligand of ACE2. Molecular docking results suggested that the compounds from hanjeli essential oil interact with the active site of the ACE2 receptor similarly as the original ligand and remdesivir. In conclusion, hanjeli essential oil contains compounds predicted hinder the interaction of SARS-CoV-2 with the ACE2 receptor. Accordingly, our data may facilitate the development of a phytomedical strategy against SARS-CoV-2 infection.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.32 no.1
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• pp.49-66
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• 2022

The COVID-19 pandemic has led many countries around the world to introduce and employ a digital certificate system to prevent infectious diseases, however, there are difficulties in using the compatible digital certificate between countries in that the international standards of the system have not been developed. Accordingly, we propose an improved system, comparing two methods of presenting a certificate, existing QR code-based and a short-range wireless communication-based certificates. The proposed system is a digital certificate system against the spread of infectious disease by storing verification information of the certificate using decentralized identity-based technology on the blockchain. Blockchain-based trust anchor improves security by solving the problem of forgery and alteration of certificates and guaranteeing the identity of certificate issuers and presenters. This system is also expected to enhance usability providing concurrent verification of a number of certificates(vaccination certificates, recovery certificates, test results, identity certificates, etc.) in a single certificate presentation.