• Korean journal of communication and information
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• v.62
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• pp.159-178
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• 2013

The current study examined the effects of the voters' perception of television news coverage of election poll results on their political participation intention. 700 voters participated in a telephone interview three weeks before the 2012 Korean presidential election. A structural equation modeling with the nationally representative sample was performed. The findings indicate the respondents were more likely to evaluate television news coverage of election poll results negatively when the news coverage presented that the candidate they supported was behind in the race, and the negative evaluation was linked to a greater third-person perception. The third-person perception, in turn, had an indirect effect on political participation intention through negative emotional responses. The results imply that voters' political position influences their perception of the television news coverage of election poll results, and this perception can have indirect effects on political participation.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2014.06a
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• pp.94-96
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• 2014

2014년 4월 16일 세월호 참사는 수백 명의 생명을 앗아간 대형 인재로 재난 관리뿐만 아니라 재난 방송과 같은 공적 미디어의 역할과 기능에 대한 반성의 계기와 종합적 재난 미디어 체계의 필요성을 보여주고 있다. 본 연구는 재난 상황에서 우리 국민들이 여러 가지 유형의 미디어에 대한 이용 행태를 파악하고 미디어들이 가지고 있는 재난 정보 속성을 분석하고자 하였다. 또한 일반인을 대상으로 하는 재난방송과 차별적으로 재난 현장에서 정보를 제공하는 재난 미디어의 요구사항을 도출하고자 한다.

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.18 no.4
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• pp.65-78
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• 2004

1990년 이후 영국, 미국, 캐나다, 뉴질랜드 등의 국가들에 대형 전력회사들은 발전, 송ㆍ배전 및 판매 분야를 분할하여 전력산업을 재편성하여 왔다〔1, 2〕. 물론, 국내에서도 2001년 4월 한국전력공사로부터 발전부분이 분할됨으로써 구조조정이 시작되었다. 전력산업의 이러한 변화와 더불어 전력품질 향상에 대한 수용자의 요구가 증가함으로써, 전력회사들은 송전선로를 증설을 하지 않고 기존 설비를 경제적으로 관리하는 효율적인 방법을 모색하기 시작했다. (중략)

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.5
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• pp.117-132
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• 2022

The purpose of this study is to analyze factors that affect road users' acceptance of fully autonomous vehicles (level 4 or higher). A survey was done with drivers of general cars and pedestrians who share roads with fully autonomous vehicles. Five acceptability factors were selected: trust towards technology, compatibility, policy, perceived safety, and perceived usefulness. The effect on behavioral intention was analyzed using structural equation modeling (SEM). The perceived safety and trust towards technology were found to be very important in the acceptance of fully autonomous vehicles, regardless of the respondent, and policy was not influential. Compatibility and perceived usefulness were particularly influential factors for drivers. In order to improve the acceptance by road users, securing technical completeness of fully autonomous vehicles is important. Certification and evaluation of the safe driving ability of fully autonomous vehicles should be thoroughly performed, and based on the results, it is necessary to improve the perception by road users. It is necessary to positively recognize fully autonomous vehicles through education and publicity for road users and to support their smooth interaction.

• Journal of Environmental Impact Assessment
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• v.24 no.4
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• pp.317-331
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• 2015

A major barrier to the spread and vitalization of renewable energy lies in its economic infeasibility. And yet, there is a disparity in estimating the economic feasibility between supply and demand sides. Taking this into account, we calculate an appropriate level of mini-solar panel subsidies provided by the Seoul metropolitan government. More pointedly, this research investigates the receptivity and social equity of the subsidy program based on the analysis of the program's financial feasibility. The results show that the subsidies can have anticipated effects for the heavy electricity consumption group but not for the low electricity consumption group. Specifically, estimated pay-back periods for groups of 401kWh ~ 500kWh (per month) users, 201 kWh ~ 400kWh users and 101kWh ~ 200kWh were approximately 5years, 8 ~ 9 years and 12 years, respectively. This implies that differential scales of the subsidies can better contribute to reducing regressive difference between the groups and meeting the goal of social equity in regards to energy justice.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.19 no.1
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• pp.124-129
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• 2005

Reliability of electric power supply by power system becomes major issue as the electric power industry is recently being regulated. Also a change of environmental condition related to power supply reliability should be considered in the view of power supplier since the competition between energy-industries is strengthen. In other words, because customers may choose other energy source instead of electric power due to an expensive energy charge, enhancing recklessly the reliability of power supply might not be an essential strategy. So to effectively cope with this problem, it is necessary to perceive the reaction of customers against power supply reliability and interruption cost. This paper evaluates the annual interruption costs of customers by regional groups in Korea using a macro approach to cope with these internal and external environment. That is, the each ratio of customer's interruption costs to price of electric power charge is evaluated for public, service, agricultural, fishery, mining, manufactural, and residential consumption by every cities and provinces.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06b
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• pp.256-258
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• 2006

인터넷의 급속한 확산과 웹 기반의 학습을 제공하는 시스템이 늘어남에 따라 언제, 어디서나 웹을 이용한 학습이 가능한 환경이 제공되게 되었다. 하지만 활성화된 온라인 교육에서도 면대면 강의의 장점을 완벽하게 수용하기엔 어려움이 있다[1]. 따라서 최근에 LMS(Learning Management System)를 이용한 학습에서 학습자의 학습활동 평가[1,2], 학습자의 개별학습 성향[3], 다양한 콘텐츠 자원 활용[1,4] 등에서 많은 연구와 대안이 도출되고 있다. 본 논문에서는 LMS내에 저작환경을 제공함으로써 기존의 클라이언트에서 단방향으로 이루어졌던 콘텐츠 제작을 서버단에서 제공하여 콘텐츠 제작 시 학습자 학습활동 추적 정보생성과 전달 내용의 성격, 학습자의 성향에 따른 다양한 콘텐츠를 수용 할 수 있는 시스템을 구현하였다.

• Journal of the Korean Society of Radiology
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• v.17 no.3
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• pp.449-457
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• 2023

Shielding for reducing exposure dose can make the diagnosis limited. The purpose of this study is to increase the efficiency of radiation protection and minimize the loss of image information by producing the shielding made of the water and the contrast medium which has different proportion and finding out the ideal proportion of them. Each shielding materials were made of water and water-soluble iodine contrast medium with the different proportion. The attenuation rate of absorbed dose was evaluated by the shielding materials in the plastic contents for measuring the efficiency of the radiation protection. As a result, the higher ratio of the contrast medium, the more efficient it is for radiation attenuation. The anatomical structure was observed most properly in case of the solution with 20 ml of the contrast medium and most difficultly in case of more than 60 ml of the contrast medium. In case of the signal intensity between skeleton and gas, the difference of average value had a significant as p < 0.001. Shielding with contrast medium attenuates less than the conventional shielding but in the examination for the sensitive part to radiation, it can be used to minimize the loss of the image information and reduce the exposure dose.

• The Journal of the Korea Contents Association
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• v.11 no.5
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• pp.104-116
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• 2011

A recommender system is a personalized decision support tool to suggest suitable products in proper manners for the benefits of both suppliers and consumers, with the assumption of full understating of consumers' needs and preferences. However, a substantial number of studies have focused on making recommender systems more accurate and efficient. Whereas, there have been a few studies on consumers' needs and preferences under their own contexts to accept recommender systems. To this end, this study attempted to find out the impact of personal sentiments and contexts on the willingness to accept music recommender systems based on the simplified "Technology Acceptance Model" and some verified variables from the precedent studies. For the study, we conducted an empirical study using surveys and High-Order Structural Equation Model (SEM). The outcomes of the research was affirmative to the research hypothesis that the personal sentiments and contexts positively affect the acceptance of the music recommender systems.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.41 no.5
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• pp.559-569
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• 2021

In this study, using structural equation modeling, a policy acceptance evaluation model was developed to evaluate the service items of roadsthat affect the acceptance of the Safety Speed 5030 policy. The relationship of influence on policy acceptance was found to be as follows: In the driver group, satisfaction with mobility (0.411), economy (0.217), safety (0.181), and environment (0.089) are in the order of top priority; and in the non-driver group, satisfaction with safety (0.466), mobility (0.223), environment (0.194), and economy (0.111) are in the order of top priority. From these results, in order to increase acceptance of the Safety Speed 5030 policy, it is necessary to differentiate the provision of services according to the characteristics of each road user type. This infers it is important to improve mobility for roads with a high hierarchy mainly used by driver groups, and to improve safety for roads with low hierarchy mainly used by non-driver groups. Therefore, the evaluation model for acceptance of the Safety Speed 5030 policy suggested in this study can be used as basic data for activating the Safety Speed 5030 policy in the future by reflecting the qualitative evaluation of users.