• Journal of Navigation and Port Research
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• v.44 no.2
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• pp.65-72
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• 2020

Mankind has been using ships for more than 5,000 years and has developed a range of related technologies. However, despite such a long history, compared to aircraft with a history of approximately one century, the pace of progress has been markedly slow. Even though technological progress of ships or the installation of various navigation equipment have been achieved, seaborne collisions have occurred quite frequently. This study analyzed the TCAS( Traffic Collision Avoidance System) that has contributed to the prevention of collisions with other transport methods including aircraft to suggest a collision avoidance system that can be deployed for ships. To apply the technologies applied to aircraft that move in 3D to ships that move in 2D, the difference in the operational environment between the two modes was analyzed to identify elements that need to be applied to ships. The suggested display of data on the collision prevention system is one that manipulates the augmented reality display device used in automobiles that over the past few years has undergone rapid development. Based on the presentation of technological elements that need to be considered when adopting the SCAS or the Seaborne Collision Avoidance System as suggested in this study, the authors hope to contribute to the prevention of collisions.

• Journal for History of Mathematics
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• v.28 no.6
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• pp.321-332
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• 2015

This paper is concerned with the convergence of double trigonometric series and Fourier series. Since the beginning of the 20th century, many authors have studied on those series. Also, Ferenc $M{\acute{o}}ricz$ has studied the convergence of double trigonometric series and double Fourier series so far. We consider $L^p(T^2)$-convergence results focused on the Ferenc $M{\acute{o}}ricz^{\prime}s$ studies from the second half of the 20th century up to now. In section 2, we reintroduce some of Ferenc $M{\acute{o}}ricz^{\prime}s$ remarkable theorems. Also we investigate his several important results. In conclusion, we investigate his research trends and the simple minor genealogy from J. B. Joseph Fourier to Ferenc $M{\acute{o}}ricz$. In addition, we present the research minor lineage of his study on $L^p(T^2)$-convergence.

• Journal of the Korean Institute of Educational Facilities
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• v.27 no.2
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• pp.21-34
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• 2020

This study explores the education of historic preservation in the United States. The research examined its history and philosophical and practical approaches within the American urban context, from its historical backgrounds to evolving social perspectives. This case study is to help collegiate educators in understanding the principles of American architectural heritage conservation and why it has been developed in specific directions and, ultimately, to assist in designing preservation education programs for different local contexts. Historic preservation in the United States has been integrated into the architecture and urban planning field as a sustainable development approach incorporating physical, social, and economic matters. First, this study explored the development of the preservation profession, policies, and education since the 1930s. Second, the researchers investigated the three fundamentals of historic preservation, such as authenticity, documentation, and community engagement. Lastly, this research discussed that American preservation deals with living communities and seeks interdisciplinary approaches. The understanding of historic preservation pedagogy from these multiple perspectives would hopefully provide a guide to developing cultural heritage education programs.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.7 no.7
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• pp.1569-1584
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• 2013

Ubiquitous interaction in a pervasive environment is the main attribute of smart spaces. Pervasive systems are weaving themselves in our daily life, making it possible to collect user information invisibly, in an unobtrusive manner by known and even unknown parties. Huge number of interactions between users and pervasive devices necessitate a comprehensive trust model which unifies different trust factors like context, recommendation, and history to calculate the trust level of each party precisely. Trusted computing enables effective solutions to verify the trustworthiness of computing platforms. In this paper, we elaborate Unified Trust Model (UTM) which calculates entity's trustworthiness based on history, recommendation, context and platform integrity measurement, and formally use these factors in trustworthiness calculation. We evaluate UTM behaviour by simulating in different scenario experiments using a Trust and Reputation Models Simulator for Wireless Sensor Networks. We show that UTM offers responsive behaviour and can be used effectively in the low interaction environments.

• Proceedings of the KSR Conference
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• 2004.06a
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• pp.847-852
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• 2004

The virtual engineering technologies have been broadly used for the design, testing, manufacturing and maintenance works of industrial product. Recently many VR systems with walk through navigation and web databases; such as design and installation database. load history database, maintenance history database et al. are developed. However, the virtual engineering in railroad industry is not well developed compared to other industries like automobile, air, shipbuilding. In this paper, we explain the strategy that we have applied the virtual engineering technology to the design works of rolling stock and our plan to build the virtual testing laboratory(VTL) in the Korea Railroad Research Institute.

• Journal of Contemporary Eastern Asia
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• v.12 no.1
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• pp.1-3
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• 2013

It has been more than 11 years since The Journal of Contemporary Eastern Asia (ISSN 1684-629) was first launched in the year 2001. Since its launch, the Journal of Contemporary Eastern Asia (JCEA) has gone through several changes and developments, including a recent change in ownership. Now the JCEA is primary published by the Cyber Emotions Research Institute at YeungNam University, South Korea. In order to widen the journal's scope and readership, the Asia Triple Helix Society was also engaged as co-publisher. In this article, we detail these developments; particularly we will discus the journal's history, current status, and impact factor.

• ETRI Journal
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• v.24 no.3
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• pp.226-238
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• 2002

A spatial object changes its states over time. However, existing spatial and temporal database systems cannot fully manage time-varying data with both spatial and non-spatial attributes. To overcome this limitation, we present a framework for spatio-temporal databases that can manage all time-varying historical information and integrate spatial and temporal relationship operators into the select statement in SQL3. For the purpose of our framework, we define three referencing macros and a history aggregate operator and classify the existing spatial and temporal relationship operators into three groups: exclusively spatial relationship operators, exclusively temporal relationship operators, and spatio-temporal common relationship operators. Finally, we believe the integration of spatial and temporal relationship operators into SQL3 will provide a useful framework for the history management of time-varying spatial objects in a uniform manner.

• Journal of architectural history
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• v.24 no.6
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• pp.7-19
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• 2015

'Griffis Collection' is a collection of photographs of Japan and Korea in modern era, collected by William Elliot Griffis. Originally Mr. Griffis was studying about Japan when he developed an interest on Korea, and started to collect helpful materials he could find to study. Later days of Griffis' life, he donated his research to Rutgers University Library, and those materials were named and preserved as Griffis Collection. This paper is about photographs that illustrate modern Incheon and Hansung, and study them in order to discover how Korea's modern cities and architecture were formed and built. In total, there is four categorized chapters of photographs, and those are cities, public buildings, educational facilities and private buildings. In Griffis Collection, there are 23 photos those are relate to this paper's subject, but only 19 of them that has historic value has been covered in this paper. In results, all 19 photos were proved that they have significant information in terms of historic research of modern Korea and Korea's modern architectural stages.

• Korean Institute of Interior Design Journal
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• v.13 no.4
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• pp.147-155
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• 2004

The purpose of this research is to improve exhibition effectiveness by implementing hands-on exhibition technique that best provides adults with cultural resting place and children with outdoor education which simply supports school curriculum. By completing this research, the museum of natural history will become defined innovative as a place that enables people actively develop creativity For this sake, some of domestic natural science museums were selected as the samples in this study, such as Seodaemun of Natural History, Incheon Standing Science Pavilion and Daejeon National Science Museum, Which all produce experience-based exhibition in relatively brisk manner. First of all, this study attempted to identify the traffic line and behavioral characteristics of spectators who used experience-oriented exhibition through follow-up and observational study Then it divided samples into adults and children group to compare and analyze the ratio of using exhibitions, the ratio of spectators and the sojourn time according to the type of experience-oriented exhibitions. In addition, this study attempted to collect available data about spectators who were in conversation with one another on the other hand, it also attempted to determine any effects on using experience-based exhibition by performing a questionnaire survey, so that it might set up an index for behavioral characteristics the spectators who visit such exhibition.

• Journal of Korean Public Health Nursing
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• v.28 no.2
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• pp.200-210
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• 2014

Purpose: This research is conducted in order to compare health status, health behaviors, and health care utilization between immigrant women and domestic women in South Korea. Methods: Research subjects comprised of 62 immigrant women living in a rural area of South Korea' extracted from a survey and health examination conducted during a period from 1st of August in 2013 to 8th of November in 2013 and 214 domestic women extracted from primitive data from the Korea National Health and Nutrition Examination Survey in 2011. Student t-test, Chi-square test, Mann-Whitney U test, and logistic regression were performed using the SPSS18.0K program for analysis. Results: Results of comparison between immigrant women and domestic women, showed no difference in obesity, hypertension, dyslipidemia, anemia, hepatitis B, previous history of tuberculosis, and history of decayed, missing, and filled teeth however, more immigrant women had experienced decayed, missing, and filled teeth compared to domestic women (p<0.001). Conclusions: Compared to domestic women, Iimmigrant women were more likely to have poor dental health conditions. Therefore, greater efforts is needed in order to solve poor dental health conditions for women.