• 한국디지털정책학회:학술대회논문집
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• 한국디지털정책학회 2003년도 창립학술대회
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• pp.75-89
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• 2003

In this paper, we first summarize key components of integrated services of telecommunication and broadcasting. Definitions and typology of th e integrated services are organized th rough comprehensive analysis of recent convergence trend of telecommunications and broadcasting. Various issues on regulations, society cultures, and technical aspects of the convergence are identified. Next, we deal with the digital media broadcasting service which is one of the technical culmination of the telecommunication and broadcasting merged services. The focus of the analysis has been made on policy implications and comparative details with other similar services in the same category. Finally, we suggest the perspectives on forthcoming digital media broadcasting service developments, and implications to cope with this emerging technological breakthrough.

• 한국정보기술학회 영문논문지
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• 제8권2호
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• pp.47-58
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• 2018

In this paper, we propose a method for skin condition analysis using a camera module embedded in a smartphone without a separate skin diagnosis device. The type of skin disease detected in facial image taken by smartphone is acne, pigmentation, blemish and flush. Face features and regions were detected using Haar features, and skin regions were detected using YCbCr and HSV color models. Acne and flush were extracted by setting the range of a component image hue, and pigmentation was calculated by calculating the factor between the minimum and maximum value of the corresponding skin pixel in the component image R. Blemish was detected on the basis of adaptive thresholds in gray scale level images. As a result of the experiment, the proposed skin condition analysis showed that skin diseases of acne, pigmentation, blemish and flush were effectively detected.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송∙미디어공학회 2018년도 추계학술대회
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• pp.158-159
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• 2018

정보 통신 기술이 발전함에 따라, 적절한 검증을 거치지 않은 미디어 콘텐츠가 공급되고 소비되는 미디어 소비 환경이 형성되고 있다. 이러한 환경에서는 적절치 않은 미디어 콘텐츠의 유통을 제어 하기 위해 기존의 보안 및 인증 기술을 적용하는데 한계가 있기에 새로운 접근 방법의 고민이 필요하다. 본 연구에서는, 건전한 미디어 콘텐츠 소비환경 조성을 위한 미디어 트러스트(Trust)의 개념을 정립하고, 이를 위한 미디어 트러스트에 영향을 주는 4 가지 트러스트 요소들을 제안한다. 그리고, 제안된 요소들의 유효성을 검증하기 위한 YouTube 데이터의 활용 방안에 대해 기술한다. 이러한 접근 방법을 통해 미디어 소비환경에서의 트러스트 개념에 대한 연구 및 기술개발을 활성화 시키고자 한다.

• 스마트미디어저널
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• 제10권2호
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• pp.48-54
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• 2021

Sepsis is one of the leading causes of mortality globally, and it costs billions of dollars annually. However, treating septic patients is currently highly challenging, and more research is needed into a general treatment method for sepsis. Therefore, in this work, we propose a reinforcement learning method for learning the optimal treatment strategies for septic patients. We model the patient physiological time series data as the input for a deep recurrent Q-network that learns reliable treatment policies. We evaluate our model using an off-policy evaluation method, and the experimental results indicate that it outperforms the physicians' policy, reducing patient mortality up to 3.04%. Thus, our model can be used as a tool to reduce patient mortality by supporting clinicians in making dynamic decisions.

• 스마트미디어저널
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• 제11권5호
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• pp.82-90
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• 2022

Along with the growing popularity of 5G technology, providing flexible and personalized network services suitable for requirements of customers has also become a lucrative venture and business key for network service providers. Therefore, dynamic network provisioning is needed to help network service providers. Moreover, increasing user demand for network services meets specific requirements of users, including location, usage duration, and QoS. In this paper, a routing algorithm, which makes routing decisions using Reinforcement Learning (RL) based on the information about link stability, is proposed and called Link Stability aware Reinforcement Learning (LSRL) routing. To evaluate this algorithm, several mininet-based experiments with various network settings were conducted. As a result, it was observed that the proposed method accepts more requests through the evaluation than the past link annotated shorted path algorithm and it was demonstrated that the proposed approach is an appealing solution for dynamic network provisioning routing.

• 디지털융복합연구
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• 제13권3호
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• pp.263-270
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• 2015

역사적으로 과학기술의 발전은 그 시대의 세계관에 영향을 미쳐왔고, 이는 예술매체와 콘텐츠를 통하여 시각화되어왔다. 본고에서는 20세기 초반에서 중반사이에 아메리카와 유럽을 중심으로 발전하고 단기간 주목받았던 키네틱아트에 대한 재조명을 통해서 '움직임' 의 개념이 어떠한 방식으로 작품의 물질성과 비물질성의 전환과 공존을 통해 발전해왔는지에 대해 알아보고 이러한 키네틱아트의 개념 확대가 현대의 새로운 과학기술을 반영한 뉴미디어아트에 어떠한 영향을 끼쳤는지 논하였다. 디지털미디어로 창작된 작품은 항상 관객과의 대면에 일종의 환영을 구동시키는 장치부터 물리적 공간이나 인터페이스가 필요한데, 이러한 면이 키네틱아트의 전례와 '물질과 비물질의 병치'라는 면에서 유사한 점과 차이점을 모두 내제하고 있다고 보고 두 미술사적 운동에 대하여 비교분석을 통해서 탐구하였다.

• 한국융합학회논문지
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• 제12권3호
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• pp.125-132
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• 2021

본 연구는 소셜미디어 OTT의 중간영역에서 시장을 확대하고 있는 SFV 플랫폼인 Tiktok 서비스의 이용자가 인식하는 몰입과 중독에 미치는 영향요인을 확인하고자 하였다. 연구자들은 Tiktok 이용자가 증가하면서 중독에 이르는 경로에 대한 연구가 필요할 것으로 보았다. 미디어 소비 시간이 부족한 이용자는 긴영상보다 짧은 영상을 제작하고 공유하며 외생변인에 의해 애착에 영향을 받는다. 또한 애착은 대인관계 및 서비스에 대한 애착으로 구분되는데, 애착의 경로는 몰입과 중독으로 연결되는 것으로 확인되었다. 연구자들은 본 연구를 통해 동영상 미디어서비스의 중독에 이르는 경로를 자기노출과 애착, 몰입과 중독 등으로 설정하여 검증하였다는 점에서 이론적, 실무적 공헌점이 있다고 보았다. 이러한 연구결과는 더욱 다양화되고 있는 동영상 중심의 미디어 서비스에 적용이 가능하며, 향후 출현하는 새로운 미디어에 활용가능하다는 측면에서 후학의 연구를 기대할 수 있을 것으로 본다.

• International journal of advanced smart convergence
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• 제6권2호
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• pp.34-50
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• 2017

This study delved into the effects of labor union members' social media utilization for the formation of labor union social capital. Specifically, this study aimed to identify the effects of labor union-related social media use and participation on the labor union's social capital formation through quantitative and qualitative research. It set up trust, network, and participation as social capital components and as dependent variables. Network, in particular, was divided into bonding and bridging aspect. There is the correlation between labor union-related social media use and the formation of labor union social capital. As participation in the group type social media operated by a labor union becomes more active, evaluation on labor union social capital throughout trust, network, and participation is higher. Especially, the correlation between bonding network and bridging network was high. This proves that a labor union's bond enhancement does not result in the labor union's selfishness, but it can build a cooperative system with an external network.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권11호
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• pp.5182-5199
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• 2017

Recently, Internet of Things (IoT) drives a large variety of research, development, and new type of markets. All type of devices and sensors will be part of the Internet of Things and will be able to communicate not only plain data, but also audio-visual, olfactory, and haptic media data. In addition, as the devices and sensors getting smarter, it is highly probable that they can process acquired media and metadata to extract higher level of information (e.g., semantics). To support such enhanced functionalities, ISO/IEC SC29 WG11 (MPEG) starts a new standard project, ISO/IEC 23093, called Internet of Media Things (IoMT) to provide standard data formats and APIs for media things. This paper presents the standardization activities of IoMT focusing on explaining terms, standard scopes, and major media things with their use cases. One of the use cases, an IoT system for a blind pedestrian navigation assistance, is evaluated to prove its effectiveness.

• 한국IT서비스학회지
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• 제16권1호
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• pp.83-98
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• 2017

Broadcasting telecommunication convergence service means a service where broadcasting and telecommunication converge. Recently with the advancement of technology, broadcasting telecommunication convergence service has been evolving to provide multimedia contents through various devices including wired and wireless network environment. Up to now, IPTV and smartphone-based convergence services have been dominant, but more developed and evolved technology and media will appear in the future. In order to derive the next generation broadcasting telecommunication convergence service supporting model, this study derives an evaluation model of broadcasting telecommunication convergence service and presents a case of evaluation of 30 demonstration projects supported by the Korean government from 2010 to 2014. In this study, we derive an evaluation model and evaluate the demonstration projects by reflecting the position of the main stake holders of service such as users, experts, and related organizational institutions, away from the existing simple service evaluation method. Expert questionnaire used AHP (Analytic Hierarchy Process) method, and the evaluation results were divided into upper and lower groups to provide key implications by a gap analysis. From this analysis this study suggests guidelines for next generation broadcasting telecommunication service support projects. The next generation broadcasting convergence service business should be based on open platform type in terms of service type. In terms of service media, it should be centered on open devices such as smart phones and smart TVs. In terms of types of business responsibilities, it should be led by public organizations and it is necessary to increase the fund matching ratio by at least 62% when the private sector participates.