• 한국콘텐츠학회논문지
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• 제19권9호
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• pp.512-520
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• 2019

본 연구는 소셜미디어인 유튜브의 강박적 사용에 대해 조사하는 것이다. 이를 위하여 본 연구는 성격 특성 관점(호감성, 성실성, 신경성, 외향성, 개방성)과 이용 동기 관점(실용적, 쾌락적, 사회적 동기)을 동시에 고려한 연구모형을 개발하였다. 본 연구를 위해 설문방법을 이용하였고, 분석을 위한 데이터는 165개의 데이터를 적용하였다. 자료의 분석은 구조방정식모형을 사용하였다. 실증분석결과는 첫째, 호감성과 성실성이 높을수록 강박적 유튜브 사용이 낮은 것으로 나타났다. 둘째, 실용적 이용 동기가 높을수록 강박적 유튜브 사용이 낮은 것으로 나타났다. 본 연구의 결과는 유튜브 이용자들에게 강박적 사용의 위험성을 경고할 뿐만 아니라, 자체 관리 전략을 개발하는데 도움을 준다는 점에서 의미가 있다 하겠다.

• 대한건축학회논문집:구조계
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• 제34권8호
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• pp.19-27
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• 2018

In this study, annual site and primary energy use intensities (EUIs) and $CO_2$ emission intensities (CEIs) per area by end use were estimated based on the measurement data from June 2016 to May 2017 of 19 sample office buildings in Seoul. In addition, the estimated site EUIs by end use were compared to the U.S. Commercial Buildings Energy Consumption Survey (CBECS) 2012 data. Average site EUIs by end use were found to be in the order of electric appliance (typical floors) > heating > cooling > lighting > air movement > domestic hot water > vertical transportation > city water supply. In the case of primary EUIs and CEIs by end use, electric appliance was found to be the largest. As results of comparison with the CBECS 2012 data, it was found that the site EUIs were similar for heating, cooling, domestic hot water, and electric appliance, etc., but slightly different for lighting and air movement. The number of sample office buildings will continue to increase until 2020 (total number of samples 85) and intensities data by end use will be continuously updated through continuous collection of measurement data.

• 농업과학연구
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• 제47권4호
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• pp.933-940
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• 2020

Land-use change matrix data is important for calculating the LULUCF (land use, land use change and forestry) sector of the national greenhouse gas inventory. In this study, land cover changes in 2004 and 2019 were compared using the Wall-to-Wall technique with a land cover map of Sejong City from the Ministry of Environment. Sejong City was classified into six land use classes according to the Intergovernmental Panel on Climate Change (IPCC) guidelines: Forest land, crop land, grassland, wetland, settlement and other land. The coordinate system of the land cover maps of 2004 and 2019 were harmonized and the land use was reclassified. The results indicate that during the 15 years from 2004 to 2019 forestlands and croplands decreased from 50.4% (234.2 ㎢) and 34.6% (161.0 ㎢) to 43.4% (201.7 ㎢) and 20.7% (96.2 ㎢), respectively, while Settlement and Other land area increased significantly from 8.9% (41.1 ㎢) and 1.4% (6.9 ㎢) to 35.6% (119.0 ㎢) and 6.5% (30.3 ㎢). 79.㎢ of cropland area (96.2 ㎢) in 2019 was maintained as cropland, and 8.8 ㎢, 1.7 ㎢, 0.5 ㎢, 5.4 ㎢, and 0.4 ㎢ were converted from forestland, grassland, wetland, and settlement, respectively. This research, however, is subject to several limitations. The uncertainty of the land use change matrix when using the wall-to-wall technique depends on the accuracy of the utilized land cover map. Also, the land cover maps have different resolutions and different classification criteria for each production period. Despite these limitations, creating a land use change matrix using the Wall-to-Wall technique with a Land cover map has great advantages of saving time and money.

• 한국수학교육학회지시리즈A:수학교육
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• 제62권3호
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• pp.401-416
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• 2023

본 연구는 기술수용모델을 기반으로 예비교사의 자기효능감과 AI 불안이 수학 수업에서 '똑똑! 수학 탐험대'를 사용하려는 의도에 미치는 영향을 구조적으로 살펴보았다. 이를 위해 254명의 예비교사들의 자기효능감, AI 불안, 인지된 사용 용이성, 인지된 유용성, 사용 의도를 변인으로 연구모형을 설정하고 구조방정식으로 변인 간의 구조적 관계와 직·간접효과를 분석하였다. 분석 결과, 자기효능감은 인지된 사용 용이성, 인지된 유용성, 사용 의도에 유의미한 영향을 미쳤으며, AI 불안은 인지된 사용 용이성과 인지된 유용성에 유의미한 영향을 미치지 않았다. 인지된 사용 용이성은 인지된 유용성과 사용 의도에 유의미한 영향을 미쳤으며, 인지된 유용성은 사용 의도에 유의미한 영향을 미쳤다. 이러한 결과를 통해 수학수업에서 예비교사가 '똑똑! 수학 탐험대' 사용을 촉진하기 위한 시사점과 방안을 제안하였다.

• 벤처창업연구
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• 제18권6호
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• pp.191-199
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• 2023

최근 생성형 AI 기반인 ChatGPT는 상업적·교육적 활용 가능성과 높은 효용가치 기대로 급격히 발전함과 동시에 여러 가지 우려와 문제점도 대두되고 있다. 본 연구는 ChatGpt의 품질이 사용자의 활용만족과 지속적 이용의도에 미치는 영향을 분석하는데 목적이 있다. 이를 위하여 부산경남지역 대학생들을 대상으로 설문조사를 실시하였으며 총 155명의 응답을 표본으로 SPSS 28.0 프로그램을 이용하여 검증하였다. 연구 결과, ChatGPT 품질 요소 중 신뢰성과 안정성은 활용만족과 지속적 이용의도에 긍정적인 영향을 미치는 것으로 나타났다. ChatGPT의 활용만족은 지속적 이용의도에 긍정적인 영향을 미치는 것으로 나타났다. ChatGPT의 신뢰성과 안정성, 지속적 이용의도간에에 활용만족은 긍정적인 매개효과가 있는 것으로 나타났다. 본 연구 결과로 ChatGPT의 품질요소 중 사용자의 지속적 이용의도에 영향을 미치는 요인을 제시함으로서 ChatGPT의 이용 촉진에 필요한 교육적·정책적 방향 제시에 기여고자 한다.

• 패션비즈니스
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• 제14권2호
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• pp.166-178
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• 2010

The purposes of this study were to investigate the impacts of interactivity, site stickiness, and switching barrier on intention to use. For this purpose, the study tested covariance structural model which set relationships among independent variable(interactivity), meditated variables(site stickiness and switching barrier), and dependent variable(intention to use). The data were collected from a sample of 239 internet shopper of college female students. The covariance structural model and research hypothesis analyzed by using SPSS 16.0 and AMOS 5.0 program. The results are as follows: First, the structural model is accepted significantly. Second, interactivity had a positive influence on site stickiness, switching barrier, and intention to use. And it was found to have a indirect effect on intention to use through site stickiness and switching barrier. Third, site stickiness had a positive influence on switching barrier. Forth, site stickiness and switching barrier had a positive impact on intention to use.

• 영어어문교육
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• 제17권3호
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• pp.177-194
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• 2011

This study examines the use of discourse markers in cross-cultural communication between EFL learners in an e-learning environment. The study analyzes the use of discourse markers in a corpus of an interactive web with a bulletin board system through which college students of English at Japanese and Korean universities interacted with each other discussing the topics of local and global issues. It compares the use of discourse markers in the learners' corpus to that of a native English speakers' corpus. The results indicate that discourse markers are useful interactional devices to structure and organize discourse. EFL learners are found to display more frequent use of referentially and cognitively functional discourse markers and a relatively rare use of other markers. Native speakers are found to use a wider variety of discourse markers for different functions. Suggestions are made for using computer corpora in understanding EFL learners' language difficulties and helping them become more interactionally competent speakers.

• 한국정보시스템학회:학술대회논문집
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• 한국정보시스템학회 2004년도 춘계학술대회
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• pp.202-213
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• 2004

An effective use of information and communications technology is thought of as critical for achieving corporate competitiveness. This study identifies patterns of corporate use of communications technology, and examines how the use of those technologies is associated with business strategies and the level of information intensity. A survey study on a sample of Korean corporations shows that the use of communications technology is closely related both to business strategy and information intensity, and that communications technologies can be divided into two types in terms of their usage pattern. The structured communication technology is found to be related to the tools and services that support structured tasks, and the The unstructured technology to the tools the use of which is less structured and more flexible. Cost-based strategy is found to be closely related to the use of structured communication technology, while differentiation strategy is closely related to the use of unstructured communication technology.

• 한국컴퓨터정보학회논문지
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• 제22권2호
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• pp.9-19
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• 2017

Useful continuous sensing applications are increasingly emerging as a new class of mobile applications. Meanwhile, open, multi-use sensor devices are newly adopted beyond smartphones, and provide huge opportunities to expand potential application categories. In this upcoming environment, uncoordinated use of sensor devices would cause severe imbalance in power consumption of devices, and thus result in early shutdown of some sensing applications depending on power-hungry devices. In this paper, we propose EnergyCordy, a novel inter-device energy use coordination system; with a system-wide holistic view, it coordinates the energy use of concurrent sensing applications over multiple sensor devices. As its key approach, we propose a relaxed sensor association; it decouples the energy use of an application from specific sensor devices leveraging multiple context inference alternatives, allowing flexible energy coordination at runtime. We demonstrated the effectiveness of EnergyCordy by developing multiple example applications over custom-designed wearable senor devices. We show that EnergyCordy effectively coordinates the power usage of concurrent sensing applications over multiple devices and prevent undesired early shutdown of applications.

• 아동학회지
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• 제37권5호
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• pp.53-64
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• 2016

Objective: This study explored the mediating effects of language development on the influences of young children's media use on positive and negative peer interactions. Methods: The data came from the 2013 Panel Study on Korean Children (N = 1,215) and were analyzed to assess the mediating effects of media use on positive and negative peer interactions, using SEM with the bootstrapping method by means of SPSS 21.0 and AMOS 20.0. Results and Conclusion: The results show that increased media use affects positive and negative peer interactions through language development. This indicates that, while media use does not directly affect positive and negative peer interactions, it appears to increase the difficulty of developing language ability; as the language development worsens, undesirable peer interactions may develop. Thus, language development seems to play an important mediating role between media use and peer interactions. Theoretical and practical implications are discussed.