• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2007년도 추계 학술대회논문집
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• pp.249-257
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• 2007

A high resolution numerical method aimed at solving gas-liquid two-phase flow is proposed and applied to gas-liquid two-phase shock tube problem. The present method employs a finite-difference 4th-order Runge-Kutta method and Roe's flux difference splitting approximation with the MUSCL TVD scheme. By applying the homogeneous equilibrium cavitation model, the present density-based numerical method permits simple treatment of the whole gas-liquid two-phase flow field, including wave propagation and large density changes. The speed of sound for gas-liquid two-phase media is derived on the basis of thermodynamic relations and compared with that by eigenvalues. By this method, a Riemann problem for Euler equations of one dimensional shock tube was computed. Numerical results such as detailed observations of shock and expansion wave propagations through the gas-liquid two-phase media and some data related to computational efficiency are made. Comparisons of predicted results and exact solutions are provided and discussed.

• 산경연구논집
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• 제13권7호
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• pp.27-35
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• 2022

Purpose: To entice new customers, companies attach their products to sports. From a pastime enjoyed by many to a multi-billion-dollar enterprise, the sport has evolved due to the growth in sports marketing spending. The purpose of this study is to illustrate the notion of sports media marketing using the prior textual data. Research design, data and methodology: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) methodology was conducted to investigate previous literature to achieve the purpose of the study. This method includes searching for information sources, selection of articles, and results extraction relative to the objectives. Results: The findings from prior systematic review indicated that customers and the marketplace can be better understood with the help of well-executed marketing campaigns. Moreover, many different techniques are being utilized to describe sports marketing such as the use of media, advertisement, public relations, and direct sales. Conclusions: All in all, the present study concludes that the notion of associative competitiveness is one of the unique characteristics of the sports sector. As a result, sports leagues and federations must maintain a balance within the league and develop a shared marketing strategy to help promote their respective sports and competitions.

• Journal of Information Science Theory and Practice
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• 제12권1호
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• pp.39-59
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• 2024

An online social network is a platform that is continuously expanding, which enables groups of people to share their views and communicate with one another using the Internet. The social relations among members of the public are significantly improved because of this gesture. Despite these advantages and opportunities, criminals are continuing to broaden their attempts to exploit people by making use of techniques and approaches designed to undermine and exploit their victims for criminal activities. The field of digital forensics, on the other hand, has made significant progress in reducing the impact of this risk. Even though most of these digital forensic investigation techniques are carried out manually, most of these methods are not usually appropriate for use with online social networks due to their complexity, growth in data volumes, and technical issues that are present in these environments. In both civil and criminal cases, including sexual harassment, intellectual property theft, cyberstalking, online terrorism, and cyberbullying, forensic investigations on social media platforms have become more crucial. This study explores the use of machine learning techniques for addressing criminal incidents on social media platforms, particularly during forensic investigations. In addition, it outlines some of the difficulties encountered by forensic investigators while investigating crimes on social networking sites.

• 한국언론정보학보
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• 제81권
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• pp.122-152
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• 2017

언론운동은 정치권력으로부터 독립함과 동시에 언론권력을 해체하고 시민들의 언론 주권을 찾으려는 사회적 운동이다. 언론의 공공성과 독립성, 책임성을 위협하는 가장 큰 요인은 공적 영역에서는 정치권력, 사적 영역에서는 소유주로부터 나오는 언론권력이다. 시민언론운동은 언론의 주권은 시민에게 있으며 이러한 주권을 침해할 우려가 있는 정치권력과 언론 권력을 감시하는 주체로서 시민의 운동성을 강조한다. 이명박ᐨ박근혜 정권에서 시민언론운동은 저항과 투쟁의 시기였다. 시민언론운동은 정치권과의 거버넌스가 완전히 붕괴되었고 언론 전문성을 가진 지식인이 정책 생산을 중심으로 참여하는 정책적 대안의 논의와 제시 방식의 언론시민운동은 설자리를 잃었다. 시민들의 직접 행동보다는 활동가들 중심으로 활동하는 시민언론 단체들의 영향력은 한계를 보였다. 시민언론운동이 언론개혁의 동력을 강화하려면 시민사회, 언론노조, 언론단체, 정치세력 등 사회적 힘의 재구성이 필요하다. 운동의 의제와 활동에 시민들이 주도적으로 참여할 수 있는 다양한 방안도 모색해야 한다. 아울러 언론운동에서 미디어운동으로 외연을 확장할 필요가 있다.

• 한국융합학회논문지
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• 제6권4호
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• pp.235-241
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• 2015

IT기술 기반으로 방송통신을 비롯한 미디어 기술이 발전하고 인터넷부터 모바일까지 미디어가 다양하게 분화된다. 광고 크리에이티브에서는 과거 전통 미디어 운용시 활용되었던 일방향성에 바탕을 둔 광고 크리에이티브 전략에서 일대 혁신적인 변화가 일어난다. 그것은 다양한 미디어의 분화 뿐만 아니라 미디어를 소비하는 소비자들의 미디어 행태도 수동성에서 벗어나 적극적 미디어 소비자로 진화하고 있는 것이다. 즉 광고 메시지를 받는 것에서 부터 적극적 검색과 행동, 참여, 체험 그리도 자신들의 의견을 적극 유포시키는 확산과정에 관여하고 있는 것이다. 본 논문에서는 이와 같이 훨씬 복잡해진 광고환경을 이해하고 설명하는 하나의 3차원 분석모형을 제시하고, 5가지 광고 크리에이티브를 적용하여 입체적으로 분석하고 설명을 시도 하였다.

• 한국안전학회지
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• 제31권6호
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• pp.121-128
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• 2016

Social Media transformed the mass media based information traffic, and it has become a key resource for finding value in enterprises and public institutions. Particularly, in regards to disaster management, the necessity for public participation policy development through the use of social media is emphasized. National Disaster Management Research Institute developed the Social Big Board, which is a system that monitors social Big Data in real time for purposes of implementing social media disaster management. Social Big Board collects a daily average of 36 million tweets in Korean in real time and automatically filters disaster safety related tweets. The filtered tweets are then automatically categorized into 71 disaster safety types. This real time tweet monitoring system provides various information and insights based on the tweets, such as disaster issues, tweet frequency by region, original tweets, etc. The purpose of using this system is to take advantage of the potential benefits of social media in relations to disaster management. It is a first step towards disaster management that communicates with the people that allows us to hear the voice of the people concerning disaster issues and also understand their emotions at the same time. In this paper, Korean language text mining based Social Big Board will be briefly introduced, and disaster issue detection model, which is key algorithms, will be described. Disaster issues are divided into two categories: potential issues, which refers to abnormal signs prior to disaster events, and occurrence issues, which is a notification of disaster events. The detection models of these two categories are defined and the performance of the models are compared and evaluated.

• 디지털융복합연구
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• 제12권10호
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• pp.353-361
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• 2014

본 연구는 간호사의 전통적, 사회적, 전문적 및 개인적 이미지의 차원에서 전공자와 비전공자간의 지각차이가 존재하는가와 미디어에 비친 간호사역할 이미지 지각차이가 있는가 및 간호사와 관련된 정보를 접하는 매체와 간호사 관련 정보와 이미지 접촉매체에서 기존의 연구결과와 차이가 있는가를 확인하고자 하였다. 이를 위해 간호학 전공자와 비전공자를 대상으로 설문조사 하였다. 연구결과 첫째, 간호사의 전통적, 사회적, 전문적 및 개인적 이미지에서 인식의 격차가 높게 나타났다. 둘째, 미디어에 비친 간호사의 이미지는 의사의 보조역할을 담당하고 있는 것에 대한 이미지가 높게 나타났다. 셋째, 간호사 정보 접촉매체는 TV가 매우 높게 나타났다. 본 연구결과는 환자와 간호사간의 공감커뮤니케이션을 활성화하는데 근거자료를 제공해 줄 것이며, 특히 매체활용(PPL전략과 퍼블리시티 활용전략)을 통한 간호사 이미지 향상방안을 제언하는데 의의가 있다.

• International Journal of Internet, Broadcasting and Communication
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• 제15권4호
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• pp.31-43
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• 2023

News credibility is on a decline for many democratic countries. Among the countries, South Korea is currently witnessing one of the steepest declining curves. Since people obtain news from various media, for example, television and portals, news credibility can be measured for each of the media separately. Most often, television news credibility is much higher than portal news credibility because people tend to trust traditional media more than online ones. To understand the discrepancy between news credibility of the two media in specific relation to South Koreans' everyday news use and overall news credibility evaluation, this exploratory study examined how the factors that influence television news credibility and portal news credibility differ from each other by examining the relations of news credibility of the two media to credibility of news I use and of news in general. Drawing from previous research on partisan news use, it assumed that normative beliefs for television as a traditional medium work for television news credibility in the similar way as the mechanisms of selective exposure and bias perception do. It also assumed that the experiences dimension of news trust works for credibility of portal news and of news in general similarly. To verify these assumptions, a regression analysis was conducted from a sample of 58,936 South Koreans collected in 2022. As assumed, results revealed a greater relation between credibility of television news and of news I use, and between credibility of portal news and of news in general respectively. The findings suggest that measurement of credibility should be revised in the way that reflects media characteristics and the differing expectations held by news users.

• 한국막학회:학술대회논문집
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• 한국막학회 2004년도 Proceedings of the second conference of aseanian membrane society
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• pp.132-135
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• 2004

It has been known that transport characteristics of ions are very complicated in CEDI system due to the inter-relations between ion exchange media and solution. Thus, this study sought to determine the ionic mobility of cobalt ion through cation exchange textile under electroregeneration and consequently verify the transport mechanisms of cobalt ion in a CEDI system.(omitted)

• 대한예방한의학회지
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• 제11권2호
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• pp.113-120
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• 2007

The Internet is increasingly changing our lives and enables the ordinary person to have access to never-ending quantities of information and knowledge. Technology and the Internet empower individuals and facilitate a more active role in the educational process. The webcast is a media file distributed over the Internet using streaming media technology and is used extensively in the commercial sector for investor relations presentations, in e-learning, and for related communications activities. And relating to computers, technology, and news are particularly popular and many new shows are added regularly. Especially e-learning is a general term used to refer to computer-enhanced learning and has the ability to level the learning playing field. So that the e-learning experience will be second nature to the growing Internet population. And this study intends to develop web-based education.