• Journal of Information Technology Applications and Management
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• 제20권4호
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• pp.111-125
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• 2013

This study investigates how enjoyment (or playfulness) affects user acceptance of hedonic-oriented (or pleasure) information technology based on the technology acceptance model (TAM). A research model was made to examine the effect of enjoyment on the user acceptance of hedonic information technology. 186 responses were collected from university students who had experiences on Daum's Digital View which is a well-known example of digital signage technology. The result of the statistical analysis reveals that enjoyment also had a strong effect on the acceptance of hedonic information technology, in addition to perceived usefulness and perceived ease of use. However, perceived usefulness is reported to most strongly influence the adoption of Digital View. The effect of enjoyment on intention to use was also significant, but enjoyment shows a much low degree of influence than perceived usefulness on intention to use.

• 한국문헌정보학회지
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• 제41권2호
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• pp.219-236
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• 2007

본 연구는 한국과 일본의 대표적인 과학기술정보센터인 KISTI와 JST의 과학기술정보를 공유 활용할 수 있도록 디지털도서관모형을 제시하였다. 이를 위해 디지털도서관의 개념, 구성 요소를 포함한 프레임웍과 기술 요소를 살펴보았으며, 협력 기반 디지털도서관의 사례를 조사 분석하여 최근 디지털도서관 협력의 특징을 고찰하였다. 제안된 디지털도서관 모형은 단계적으로 협력의 범위를 확장하는 모형으로, 대상 자원의 협력 및 공유 가능성에 따라 데이터의 직접 교환과 분산검색을 병행하며 메타데이터로부터 원문으로 자연스럽게 연결하는 방안이 포함되어 있다. 제안된 모형은 다른 분야나 타 기관과의 협력에서도 적용 가능할 것이다.

• 한국해양공학회지
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• 제37권5호
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• pp.190-197
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• 2023

In the shipbuilding and marine industry, digital transformation activities are promoted primarily by large shipyards. However, bottlenecks are observed across value chains, and digital transformation effects are reducing because of the cost and technical challenges encountered by supplies. In this study, we proposed a win-win cooperation model for large, small, and medium-sized companies using digital transformation based on the characteristics of the shipbuilding and marine industry through case studies. We investigated the digital transformation progress in German and Korean small and medium-sized enterprises (SMEs). In addition, we identified information-sharing methods and management challenges encountered in enterprise resource planning and manufacturing execution systems in the collaboration process of pipes, panels, blocks, etc. of SMEs that are suppliers of a Korean shipyard, and clarified communication by building a platform based on a common format between shipyards and suppliers. Further, we proposed a standard model of a digital transformation system for enhancing the collaboration between large companies and suppliers and proposed a basic plan including strategies to efficiently and effectively build a digital transformation system based on the standard model.

• 정보와 통신
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• 제28권11호
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• pp.9-15
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• 2011

CMOS 집적회로기술의 발달로 인해 디지털회로는 속도향상 소모전력 감소로 성능이 매우 많이 향상되었지만, Analog/RF 회로는 동작전압감소, 공정변화심화 등으로 인해 심각한 성능저하가 나타나고 있다. 이에 기존의 전하펌프 기반 아날로그 PLL에 대한 대안으로 All Digital PLL(ADPLL)이 개발되고 이미 상용제품에 적용되고 있다. 하지만 그 성능은 데이터변환 회로인 TDC와 DCO의 제한된 해상도로 인해 개선이 많이 필요하다. 이 두 회로는 ADPLL의 성능에 가장 큰 영향을 미치므로 본 논문에서는 지금까지 발표된 TDC와 DCO 구현사례를 중심으로 ADPLL의 연구개발동향을 살펴보고자 한다.

• 한국디지털건축인테리어학회논문집
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• 제3권2호
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• pp.14-19
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• 2003

In this paper, I tried to apply the viewpoint and the method of "Cultural Study" to the analysis of a Architecture. "SE HAN DO(歲寒圖/ Jeonghee Kim 金正喜/ 1844)", the masterpiece of the "literary artist's paintings"(文人畵) is used as a 'TEXT‘(: parole) and analysed to show how artist's value and social-cultural ideology (as a 'CONTEXT':langue) are projected to the space and architectural vocabulary.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2007년도 하계학술대회 논문집
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• pp.500-502
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• 2007

In case Power Line Communication (PLC) method is applied to a rainwater monitoring system, PLC module should be utilized. In this paper, PLC module using ST7538Q is implemented. The design rules of the IC peripheral circuit are explained in detail. The operation of the implemented PLC module is verified through the experimental results.

• 한국BIM학회 논문집
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• 제9권3호
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• pp.1-7
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• 2019

Digital twin technology has been actively developed to monitor and assess the current state of actual structures. The digital twin changes the traditional observation method performed in the field to the real-time observation and detection system using virtual online model. Thus, this study designed a digital twin model for a beam and examined the feasibility of the digital twin for bridges. To reflect the current state of the bridge, model updating was performed according to the field test data to construct an analysis model. Based on the constructed bridge analysis model, the relationship between strain and displacement was used to represent a virtual model that behaves in the same way as the actual structure. The strain and displacement relationship was expressed as a matrix derived using an approximate analytical theory. Then, displacements can be obtained using the measured data obtained from strain sensors installed on the bridge. The coordinates of the obtained displacements are used to construct a virtual digital model for the bridge. For verification, a beam was fabricated and tested to evaluate the digital twin model constructed in this study. The displacements obtained from the strain and displacement relationship agrees well with the actual displacements of the beam. In addition, the displacements obtained from the virtual model was visualized at the locations of the strain sensor.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2006년도 춘계학술발표회 논문집
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• pp.249-254
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• 2006

Aerial photo process with digital camera has some benefits. It is fast and simple by digital way in comparison with aerial photo based on film. Also it works with GPS/INS device to do direct geo-referencing, In this study, AT result from using direct exterior factors, exterior factors extracting from GPS/INS data and digital map and GCP is produced. In base on it, ortho images are produced and compared with surveying data.

• 한국군사과학기술학회지
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• 제4권1호
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• pp.62-72
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• 2001

In the countries of USA, UK, etc, which have the advanced submarine design technologies, the digital mockup actively applies in the naval ship and the submarine design, because it has many advantages such as the reduction of shipbuilding periods and costs, the potential of easier design changes, the combination of visualization with realistic behavior and so on. This paper includes the architecture development methods of digital mockup system and presents the S/W and H/W architecture scheme and the methods of 3D CAD modelling system of a submarine hull and machineries for the conceptual design verification.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.1483-1486
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• 2006

We describe the contrast enhancement of images using an APL(Average Picture Level) in an AC-PDP. A CEC(Contrast Enhancement Curve) determined by the APL was applied to enhance the contrast of images depending on the dominant gray levels. The most effective advantage of the proposed method is that it is easier to adjust the dynamic ranges to be enhanced with good quality and implement in a hardware system. The simulation result shows that the proposed method enhanced the contrast of given images significantly and kept the original brightness except the specific area of them compared to the HE(Histogram Equalization).