• Journal of Satellite, Information and Communications
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• v.12 no.4
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• pp.56-61
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• 2017

Recently, the satellite development project in Korea has been changing from demand to focus on various purposes. Especially, it is proposed to process satellite data from a simple terrestrial image observation satellite and to produce high value added information. In order to expand demand for satellite information, it is necessary to develop customized information and to provide information that reflects the needs of the final target population. In this study, we conducted a questionnaire survey and analyzed the results to analyze the requirements for the customized services of environmental satellites. As a result, the environmental satellites were found to have a low awareness due to the launch and operation, but they were highly aware of the recent environmental issues such as fine dust. In addition, they are aware of the necessity of developing independent environmental satellites because they have a strong desire for environmental security, and they prefer to provide materials through media that are easy to publicize and access through the media.

• The Journal of the Korea Contents Association
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• v.14 no.8
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• pp.50-60
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• 2014

A writer's text signals are converted into visual ones as a director exerts his fundamental capability to interpret and direct. On the other hand, his situational capability comes into play as the production environment changes. Such latest developments as the increasing popularity of production outsourcing, the sapped advertising market, and the growth in the number of the media channels and consequently heightened level of competition have led to changes in the way of advertising and production sponsorship. In turn, directors are faced with a new environment, where they are now required to pick up the role of an advertising director. Given that the production costs have been rising faster than the advertising revenue, such change in the director's situational capability seems to be part of the overall drama industry's evolution.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.7
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• pp.293-300
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• 2016

Traditional databases exploit a record-based model, where the attributes of a record are placed contiguously in a slow hard disk to achieve high performance. On the other hand, for read-intensive data analysis systems, the column-based compressed database has become a proper model because of its superior read performance. Currently, flash memory SSD is largely recognized as the preferred storage media for high-speed analysis systems. This paper introduces a compressed column-storage model and proposes a new index and its data management scheme for a high-capacity data warehouse system. The proposed index management scheme is based on the asymmetric index duplication and achieves superior search performance using the master index and compact index, particularly for large read-mostly databases. In addition, the data management scheme contributes to the read performance and high reliability by compressing the related columns and replicating them in two mirrored SSD. Based on the results of the performance evaluation under the high workload conditions, the data management scheme outperforms the traditional scheme in terms of the search throughput and response time.

• The Bulletin of The Korean Astronomical Society
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• v.42 no.2
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• pp.71.1-71.1
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• 2017

WouldYouLike[우주라이크]는 2009년 천문학 전공 대학생들을 중심으로 탄생한 천문우주과학 대중화를 위해 활동하는 비영리 단체이다. 천문우주과학에 대한 정보를 얻기 힘든 사람들을 위해 쉽게 접할 수 있는 콘텐츠를 제작하여 이를 무료로 배포하고 있다. 2012년 무료 배포용 천문학 잡지 우주라이크 창간호를 시작으로 2017년 현재 11호까지 발간되었으며, 이 잡지는 전국 각지의 대학교 캠퍼스와 천문대 및 과학관의 협조를 통해 배포 중이다. 이러한 오프라인 활동과 더불어 SNS(인스타그램, 페이스북)와 홈페이지를 비롯해 현대인들에게 접근성이 높은 온라인 매체를 적극적으로 활용한 천문학 콘텐츠와 팟캐스트 등을 통해 대중에게 다가가고 있다. 특히 우주라이크 페이스북 페이지의 팔로워 수는 약 35,000명이며, 이는 한국천문연구원 페이스북 페이지의 약 6,000명보다 많은 수치이다. 이는 우주라이크 본연의 목적인 천문학 대중화에 우주라이크가 크게 기여하고 있음을 보여준다. 현재 우주라이크는 상기에 기술한 활동들과 함께 NASA에서 운영하는 APOD (Astronomy Picture of the Day)의 한글판 서비스를 공식적으로 번역하여 제공하고 있다. 이 포스터는 국내에서 천문우주과학 대중화의 필요성을 역설하며, 이와 연계해서 우주라이크의 활동 내역과 현재 추진 중인 계획을 소개한다. 그리고 이에 대한 국내 천문학계의 다양한 목소리를 듣고 추후 활동에 반영하고자 한다.

• Journal of the Korean Chemical Society
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• v.57 no.4
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• pp.499-506
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• 2013

In this study, clicker, also known as classroom response system, was applied to the chemistry method course at the university in Gyeongbuk, and preservice chemistry teachers' perceptions of clicker were surveyed. Before starting lecture, operation and class application of clickers were introduced to preservice teachers, and then 4-5 questions were presented to them in most classes during the term. After preservice teachers were asked to answer the questions, lecturer gave feedback based on the class answer distribution. Questions presented to preservice teachers were recall and/or understanding questions on learning contents, opinion questions, and questions about muddiest point. At the end of semester, preservice teachers were asked to rate their perception of clikers in terms of likert scale and essay type. They had positive perceptions of clicker use in aspects of cognitive effects, affective effects and media characteristics. They preferred conceptual understanding questions and monitoring questions among 8 clicker question types. Some cases using clickers in lecture and educational implications were also included.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.1
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• pp.139-146
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• 2014

This paper proposes a new personalized mobile advertising service using a smartphone connected with a digital signage which is increasingly common for out-of-home advertising. The advertising contents can be transferred with their metadata to a digital signage. Then, the signage delivers only metadata to smartphones in close proximity of it. Based on the user's preference, an application on a smartphone stores advertising metadata and publishes a personalized advertising e-catalog automatically. A smartphone user can browse, edit and share it with friends. In the view of extension of the reach of the advertising contents of various N-Screen devices including a digital signage and a smart TV to a smartphone and supplying personalized advertising data, this advertising model will be very beneficial and commercialized in the near future.

• Journal of the Institute of Electronics Engineers of Korea TE
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• v.42 no.4
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• pp.7-14
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• 2005

Recently, images/videos have been preferred as the communication media because of their information-implication and easy recognizability. But the amount of their data is so large that it has been the major research area to compress their data. This paper is related to optimization in the image data format which can make a great effect in performance of data compression and is based on the wavelet transform and JPEG2000. This paper established a criterion to decide the data format to he used in wavelet transform which is on the bases of the data errors in frequency transform and quantization. This criterion has been used to extract the optimal data format experimentally. The result were (1, 9) of 10-bit fixed-point format for filter coefficients and (9, 7) of 16-bit fixed-point data format for wavelet coefficients and their optimality was confirmed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.9
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• pp.310-320
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• 2020

BTS has established itself as a leading Korean popular music group in the global mainstream music market. In addition, BTS's fashion style is receiving so much attention that it is featured in the social networks of foreign media and the public. The purpose of this study considers BTS' fashion trends based on the analysis of their fashion styles. The methods and scope of this study have been combined with theoretical studies related to the fashion impact of BTS and BTS, as well as content analysis studies based on the image of BTS over the last five years. The results of this study are as follows. First, it was found that they pursue classic and modern styles through suits that emphasize straight silhouettes, the use of achromatic colors, and simplified decorations. Second, it has been shown that BTS prefers a casual style of free-spirited and comfortable sensibility by matching a jacket with a round shoulder line, toned-down skinny jeans, hood T-shirts, lettering patterns, and vivid colors. Third, BTS pursues a dynamic and active sporty style by utilizing the sleeveless basketball shirts, round neckline baseball shirts and shorts, training pants, and overfit sweatshirts with an emphasis on lettering patterns.

• Convergence Security Journal
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• v.13 no.2
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• pp.85-93
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• 2013

Today, the structure of terrorist organizations in the form of a variety of network complexity are evolving. However, terrorist organization not combining randomly generated network but preferential attachment a network. So, it's research should be preceded a better understanding about the characteristics and type of terror network for a effective counter-terrorism policy of law enforcement. In addition, the appropriate response strategy have to technique establish in an era of smart media. In particular, homegrown terrorist attacks on unspecified people without boundaries of countries and regions unlike the traditional terrorism. Also, homegrown terrorism are violence and criminal activity by new various of religion, politics, philosophy. Besides the extreme members of homegrown terror networks went grow up through the evolutionary process in the age of smart media. Law enforcement agencies must identify the terrorist network at the national level. Therefore, terror networks evolving in the online space, forming a radical homegrown terror organizations have access to the network. Intelligence community track terrorist networks and to block the negative aspects of the smart media outlets should be considered.

• Korean journal of communication and information
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• v.40
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• pp.221-248
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• 2007

This study examines structures and characteristics of movie consumption media. Using survey data, this research focused on combinations of movie platforms including theater, video, DVD, terrestrial television, cable television and the Internet. The results indicated that there were forty eight combinations in accessing theatrical movies. The market share of theaters was approximately 33.5%. However, this has increased to 64.50% in case of integrating other movie consumption media. The results of Chi-Square analysis showed that although the older movie-goers prefer to theaters, the youngers like to access other movie media. In addition, many movie-goers tended to replicate their viewing at the theater.