• 기독교교육논총
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• 제68권
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• pp.41-76
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• 2021

본고는 코로나19 이후 가장 뉴노멀한 현상이 된 온택트(on-tact) 기독교교육이, 과연 포스트 코로나 시대에도 결정적인 기독교교육의 형태로 남을 것인지에 대한 물음으로 시작된 논문이다. 그 물음에 답하기 위해서 본 고는 온택트 기독교교육이 대면교육은 대신할 수 없는 그만의 독자적 경험의 영역과 교육적 요소들을 가지고 있는가에 대해 탐구하였는바, 특별히 "온택트 기독교교육의 유형", "디지털 교회 논의" 그리고 "디지털 인식론"을 중심으로 탐구하였다. "온택트 기독교교육의 유형"에 대한 탐구를 통해, 본고는 '참여'나 '소통'을 기준으로 해서 보았을 때, 온택트 기독교교육은 대면교육으로는 대치될 수 없는 독자적 경험의 영역과 교육적 요소를 가지고 있음을 확인했다. "디지털 교회론"에 대한 숙고를 통해 본고는 온택트 교육이야말로 디지털 세대에게 기독교교육이 접근할 수 있는 결정적 통로라는 점을 발견하게 되었고, 네트워크 개념을 통해 공교회와 하나님나라에 대한 새로운 은유를 획득하고 그들을 재개념화 할 수 있었다. 본고는 또한 디지털 상에서 일어나는 몸과 기술 간의 확장된 몸의 인식은 디지털 상에서만 일어나는 독특한 인식방식임을 발견하였다. 이상과 같은 점을 바탕으로 해서 본고는 온택트 기독교교육이 단순히 코로나19시대의 대면교육을 보완하는 수단으로서 그치는 것이 아니라, 대면교육이 대신할 수 없는 독자적 경험의 영역 및 교육적 힘을 가진 기독교교육이라는 점을 다시 확인하였고, 또한 포스트코로나 시대에도 핵심적 기독교교육의 장이자 형태로서 확장되어 갈 것이라고 예측한다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.77-78
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• 2008

With advent of 3G mobile communication services, video telephony becomes one of the major services. However, due to a narrow channel bandwidth, the current video telephony services have not yet reached a satisfied level. In this paper, we propose an ROI (Region-Of-Interest) based improvement of visual quality for video telephony services with the H.264|MPEG-4 Part 10 (AVC: Advanced Video Coding) codec. To this end, we propose a face detection and tracking method to define ROI for the AVC codec based video telephony. Experiment results show that our proposed ROI based method allowed for improved visual quality in both objective and subjective perspectives.

• Asia pacific journal of information systems
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• 제32권2호
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• pp.327-353
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• 2022

With the development of technology and media and the pursuit of non-face-to-face due to the corona pandemic, the influence of live commerce, a real-time streaming shopping channel, is growing. Starting from China, the popularity of live commerce is growing all over the world, and it has become an interesting topic among many practitioners and researchers. However, compared to its popularity, there are few studies on live commerce. Therefore, we build a theoretical model in terms of IT affordance such as visibility, guidance shopping, trading, and meta-voicing and investigate how live commerce affects engagement with customers. We empirically measure 428 individuals who have used live commerce using survey data. In addition, we conduct four types of scenario experiments on whether social cues on exposures of other consumers, influence customer engagement. Our results show that trading affordance has the most significant effect. This shows that the live commerce platform may want to devise a program that helps make payment easier for users who prefer a quick and simple process. Our study contributes to the literature by presenting the importance of IT affordance for live commerce.

• 한국정보시스템학회지:정보시스템연구
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• 제12권2호
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• pp.21-39
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• 2003

Many people including teachers and students' parents must assist each student who will be a hero of future to develop their potential abilities and acquire various skills. Counseling is a fundamental thing to achieve this goal. But, in reality, it is usually difficult to do counseling which makes it possible to establish desirable self-view and world view expertly and systema tically because of burdensome task of teachers, spatial and time limit and students' extracurri cular activities. Taking advantages of computer networking, this research was designed to solve various problematic situations we can usually face with in school and home, to reduce limitations among three parties: teachers, parents and students, and to keep record continuously on the process and contents of counseling. And, also, this research is focused to web-based counseling network that makes possible to build database system easily adapts to specialty of each schools. Web based counseling system will provide these advantages: 1. Through analyzing and editing which will be done by expert In of accumulated database, to realize more systematic and expert database will be possible. 2. Owing to the physical characteristic of cyber space, counseling will be done any time and anywhere the computer is. 3. Because it is possible to minimize social limitations on physical condition, communication channel and anonymity of cyber space, counseling will be relatively easy to perform. 4. The contents of counseling will be automatically recorded on the database.

• Geomechanics and Engineering
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• 제28권6호
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• pp.613-624
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• 2022

A study of the evolution of overburden fractures under the solid-fluid coupling state was conducted based on the geological and mining characteristics of the coal seam depth, weak strata cementation, and high-intensity mining in the mining areas of West China. These mining characteristics are key to achieving water conservation during mining or establishing groundwater reservoirs in coal mines. Based on the engineering background of the Daliuta Coal Mine, a non-hydrophilic simulation material suitable for simulating the weakly cemented rock masses in this area was developed, and a physical simulation test was carried out using a water-sand gushing test system. The study explored the spatial distribution and dynamic evolution of the fractured zone in the mining overburden under the coupling of stress and seepage. The experimental results show that the mining overburden can be vertically divided into the overall migration zone, the fracture extension zone and the collapse zone; additionally, in the horizontal direction, the mining overburden can be divided into the primary fracture zone, periodic fracture zone, and stop-fracture zone. The scope of groundwater flow in the overburden gradually expands with the mining of coal seams. When a stable water inrush channel is formed, other areas no longer generate new channels, and the unstable water inrush channels gradually close. Finally, the primary fracture area becomes the main water inrush channel for coal mines. The numerical simulation results indicate that the overlying rock breaking above the middle of the mined-out area allows the formation of the water-conducting channel. The water body will flow into the fracture extension zone with the shortest path, resulting in the occurrence of water bursting accidents in the mining face. The experimental research results provide a theoretical basis for the implementation of water conservation mining or the establishment of groundwater reservoirs in western mining areas, and this theoretical basis has considerable application and promotion value.

• 아동학회지
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• 제26권5호
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• pp.123-137
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• 2005

The present study examined the effectiveness and communications functions of mothers' touch on the responses of their 6-month-old infants using the Still-Face (SF) situation. Participants were 67 infant-mother dyads from Seoul and Gyeonggi province. Positive and negative responses of infants were measured by SF interactions and by three different touch conditions. Touch types were measured by a coding scheme based on Suchung Kim and Keumjoo Kwak (2003; 2(04). Results showed that mothers' touch affected baby's responses by increasing positive responses and decreasing negative responses. The positive and negative responses of infants differed by the three different touch conditions, indicating that mothers use different touch types according to touch conditions; these variations in touch function as an important channel of communications.

• 한국해양공학회지
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• 제9권2호
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• pp.156-166
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• 1995

Regrading the development of offshore natural gas field near Sakhalin Island which is an ice-infested area, this study aims to estimate the dynamic ice load for construction of offshore structures operating in this region. In this paper the design ice load and dynamic responses of a slender Arctic structure upon continuous ice movement are sutdied. Crushing agter a certain elastic deformation is assumed as a primary failure mechanism at the contact zone between semi-infinite level ice edge and the face of structure. Dynamic interaction forces are calculated using a modified Korzhavin's equation and a two-dimensional ice-structure interaction model is adopted. To verify the numerical model, dynamic analysis is performed for on of the Baltic Sea channel markers whose response patterns were presiously observed.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2003년도 추계학술발표논문집 (상)
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• pp.575-578
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• 2003

본 논문에서는 얼굴영역을 검출하기위해 얼굴 피부색을 보다 효과적으로 모델링하기 위한 방법으로 피부색 특성을 고려하여 자기 성분을 제거한 Red, Blue, Green 채널을 모두 사용하는 Hue, Cb, Cg의 Multi-Channel 피부색 모델을 사용한다. 얼굴영역을 분리한 영상에 Haar 웨이블릿을 이용한 에지영상 추출과 얼굴영역의 특징벡터를 구하기 위하여 26개의 특징벡터를 사용한 효율적인 고차 국소 자동 상관함수를 사용하였다. 계산된 특징벡터는 BP 신경망의 학습을 통하여 얼굴인식을 위한 데이터로 사용된다. 시뮬레이션을 통해 제안된 알고리즘에 의한 인식률향상과 속도 향상을 입증한다.

• Structural Engineering and Mechanics
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• 제70권3호
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• pp.303-310
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• 2019

Any revision of seismic codes usually demands a higher capacity from structural members, making existing structures unsafe particularly from strength considerations. Retrofitting of capacity deficient members is very suitable for tackling such situations. This paper presents an experimental study on different retrofitting measures adopted for strengthening a series of reinforced concrete (RC) beams. Four identical RC beam specimens were casted, out of which three specimens were strengthened by different schemes (viz., bolted hot rolled flat, bolted cold-formed steel channel, and carbon fibre reinforced polymer (CFRP) laminate, respectively) on their tension face and tested under four-point monotonic loading. This study focuses on the investigation of the flexural behaviour of these retrofitted beams, observed in terms of strength and stiffness. It was concluded that all retrofitting measures improved the structural performance of these beams. However, the cost involved with each strengthening mode was proportional to the improvement in the performance achieved.

• 한국콘텐츠학회논문지
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• 제20권4호
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• pp.305-314
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• 2020

모바일환경은 시간과 공간의 제약에서 비교적 자유로우며, 비대면 채널로서 신체적·사회적 취약성이 적용되지 않는 등 고유한 특징을 가지고 있다. 이러한 시공간적 특수성은 이용자들의 심리 작용 및 행위에 일반적인 대면 환경과는 다른 형태로 영향을 줄 가능성이 크기 때문에 대면 환경에서의 심리 변인을 연구해온 기존 연구의 결과를 기반으로, 모바일환경에서의 실증 연구를 수행해 내용을 검증할 필요가 있다. 그러나 선행연구를 살펴보면, 모바일금융이라는 새로운 환경에서 소비자가 느끼는 취약성과 범죄에 관한 불안과 관련한 연구는 아직 본격적으로 이루어지지 않고 있으므로, 본 연구에서는 전통적 취약집단이 모바일금융환경에서 느끼는 인식을 살펴봄과 더불어 범죄두려움과 취약성인식, 모바일금융 사용의 관계를 파악하는 실증 연구를 수행하고, 이에 대한 단초를 마련하고자 한다. 분석결과, 전통적 취약집단 중 여성은 남성보다 모바일금융환경에서도 스스로 취약성이 있다고 인식하였고 범죄두려움을 강하게 느끼는 것으로 확인되었다. 또한, 모바일금융 범죄 취약성이 모바일금융 사용에 미치는 직접 효과는 유의하지 않았고, 모바일 범죄두려움을 완전매개하여 모바일금융 사용에 간접효과를 갖는 것으로 확인되었다.