• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2002년도 ITC-CSCC -1
• /
• pp.220-223
• /
• 2002

The digital logic systems(DLS) is classified into digital combinational logic systems(CDLS) and digital sequential logic systems(SDLS). This paper presents a method of constructing the digital sequential logic systems without feedback. Firstly we assign all elements in Finite Fields to P-valued digit codes using mathematical properties of Finine Fields. Also, we discuss the operarional properties of the building block T-gate that is used to realizing digital sequential logic systems over Finite Fields. Then we realize the digital sequential logic systems without feedback. This digital sequential logic systems without feedback is constructed ny following steps. Firstly, we assign the states in the state-transition diagram to state P-valued digit dodo, then we obtain the state function and predecessor table that is explaining the relationship between present state and previous states. Next, we obtained the next-state function and predecessor table. Finally, we realize the circuit using T-gate and decoder.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
• /
• pp.272-275
• /
• 2005

The digital map expresses natural topographies and artificial things with 3D position coordinates in the computer such as the road, railway, building, river, mountain, paddy and dryland. Therefore, the digital map is regarded as an important factor in the information-oriented society. However, it is difficult to maintain the most recent topographic information all the times because of restricted budget and time. For that, the efficient method corresponded with the digital map should be presented. This study aims to suggest the way to make an estimate of updating cost for 1:5,000 scale digital map by using remotely sensed data. To predict updating area of the digital map, the screen digitizing method was applied to the overlapped images and digital maps.

• 한국멀티미디어학회논문지
• /
• 제25권2호
• /
• pp.411-420
• /
• 2022

Entering the digital cinema era, movies and games are remediating each other. The shots of digital movies are being transformed into realistic content through digital Moving long-take shots that transcend time and space and move smoothly. At this time, the digital Moving long take shot that continuously captures the space in all directions without an external screen induces a game experience. In addition, the camera that constantly accompanies the person enhances the sense of immersion in the game in a way similar to the point of view of the game. While various immersive device contents represented by VR, AR and XR are emerging, the advent of <1917> suggests significant implications for post-cinema in that it creates a game experience while maintaining the traditional screen environment and cinematic paradigm.

• 한국의류학회지
• /
• 제47권5호
• /
• pp.929-942
• /
• 2023

Web 3.0 enables people and machines to connect, evolve, share, and use knowledge on an unprecedented scale and in new ways, drastically improving our Internet experience. The metaverse is a collective, virtual shared space supporting all digital activities. Prompted by the rapid growth of digital art and digital fashion, this theoretical analysis explores using Jean Baudrillard's simulation concept to create unique digital art non-fungible tokens (NFTs), allowing them to express and communicate ideas like real-world art. Specifically, this study analyzes 120 digital fashion portraits of humans and animals and classifies them under three types of simulacra covering four stages of Baudrillard's simulation process. The result shows that NFT fashion artworks reflect the core features of a digital reality by connecting and transcending the boundaries of cultures, genders, and nationalities. However, in the final simulation stage (the fourth step), the simulacrum can only coexist in the virtual world as a hyperreal object (the Type III of simulacrum): an object more real than reality.

• The Journal of Advanced Prosthodontics
• /
• 제9권6호
• /
• pp.432-438
• /
• 2017

PURPOSE. The purpose of this study was to evaluate the in vitro validity of quantitative light-induced fluorescence-digital (QLF-D) and laser fluorescence (DIAGNOdent) for assessing proximal caries in extracted premolars, using digital radiography as reference method. MATERIALS AND METHODS. A total of 102 extracted premolars with similar lengths and shapes were used. A single operator conducted all the examinations using three different detection methods (bitewing radiography, QLF-D, and DIAGNOdent). The bitewing x-ray scale, QLF-D fluorescence loss (${\Delta}F$), and DIAGNOdent peak readings were compared and statistically analyzed. RESULTS. Each method showed an excellent reliability. The correlation coefficient between bitewing radiography and QLF-D, DIAGNOdent were -0.644 and 0.448, respectively, while the value between QLF-D and DIAGNOdent was -0.382. The kappa statistics for bitewing radiography and QLF-D had a higher diagnosis consensus than those for bitewing radiography and DIAGNOdent. The QLF-D was moderately to highly accurate (AUC = 0.753 - 0.908), while DIAGNOdent was moderately to less accurate (AUC = 0.622 - 0.784). All detection methods showed statistically significant correlation and high correlation between the bitewing radiography and QLF-D. CONCLUSION. QLF-D was found to be a valid and reliable alternative diagnostic method to digital bitewing radiography for in vitro detection of proximal caries.

• 정보처리학회논문지C
• /
• 제11C권1호
• /
• pp.55-62
• /
• 2004

웹 기술의 발전에 따라 누구나 인터넷을 통하여 다양한 종류의 정보와 미디어를 액세스할 수 있게 되었으나 이러한 접근은 저작권과 소유권 침해를 유발할 수 있다. 콘텐츠가 다운 로드된 이후에 콘텐츠를 보호할 수 있는 방안으로 콘텐츠에 대한 저작권을 보호하기 위해 DRM(Digital Rights Management) 기술이 연구되고 있는 상태이다. 본 논문에서는 인터넷 상에서 라이센스를 기반으로 하여 창조자, 배포자, 구매자 같은 유통단계의 각 참여자의 디지털 콘텐츠에 대한 저작권을 보호할 수 있는 시스템을 제안한다. 기존의 DRM 시스템이 배포자와 구매자사이의 유통을 지원하는 반면 본 시스템은 창조자에서 구매자로 이어지는 모든 유통 체인을 온라인으로 처리한다.

• 대한치과의사협회지
• /
• 제56권7호
• /
• pp.366-374
• /
• 2018

Purpose : The purpose of this study was to compare the marginal fit of monolithic zirconia restorations fabricated form the conventional and the digital impression technique. Materials and methods : Ten patients were restored with monolithic zirconia restorations fabricated from the digital and the conventional impression technique. Before definitive insertion, silicone replicas were produced from all twenty crowns. The silicone replicas were cut in three sections; each section was evaluated at two points. The measurement was carried out by using a measuring microscope (Olympus BX 51) and I-Solution. Data from the silicone replica scores were analyzed by Shapiro-Wilk test for normal distribution and the t-test for equality of two population's mean. All tests were performed with ${\alpha}-level$ of 0.05. Results : The average marginal gaps of monolithic zirconia restorations were $133.81{\pm}36.46{\mu}m$ for the conventional impression technique, $90.07{\pm}9.47{\mu}m$ for the digital impression technique. No statistical differences were found between the two impression techniques Conclusion : Both prostheses presented clinically acceptable results with comparing the marginal fit.

• 대한전기학회논문지:시스템및제어부문D
• /
• 제52권1호
• /
• pp.51-54
• /
• 2003

The z-transform method is a basic mathematical tool in analyzing and designing digital signal processing systems for discrete input and output signals. There are may cases where the output signal is in the form of a discrete convolution sum of an input function and a designed digital processing algorithm function. It is well known that the z-transform of the convolution sum becomes the product of the two z-transforms of the input function and the digital processing function, whose proofs require the causality of the digital signal processing function in the almost all the available references. However, not all of the convolution sum functions are based on the causality. Many digital signal processing systems such as image processing system may depend not on the time information but on the spatial information, which has nothing to do with causality requirement. Thus, the application of the causality-based z-transform theorem on the convolution sum cannot be used without difficulty in this case. This paper proves the z-transform theorem on the discrete convolution sum without causality requirement, and make it possible for the theorem to be used in analysis and desing for any cases.

• 디지털융복합연구
• /
• 제11권9호
• /
• pp.181-188
• /
• 2013

본 논문에서는 장애인들의 디지털 정보 접근성 향상에 필요한 전체적인 환경을 조명하고 새로운 발전 방안을 제안한다. 장애인들의 디지털 정보 접근성 향상은 정보의 입력부터 처리 및 출력까지에 필요한 하드웨어와 소프트웨어는 물론이고 필요한 사회적 요소까지 모두 함께 갖추어져야만 효과를 기대할 수 있다. 기존의 많은 논문에서는 웹 접근성이나 장애인을 위한 IT 기술들에 대하여 개별적 주제로 다루었으나 본 논문에서는 이들을 컴퓨터 접근성과 함께 통합적으로 기술하고, 기술적 요인과 함께 사회적 요인을 포함한 통합적 발전 방안을 제안 하였다.

• 한국광학회지
• /
• 제13권5호
• /
• pp.377-383
• /
• 2002

개회로 구성의 FOG용 All-Digital Closed Loop(ADCL) 신호처리기는 종래의 아날로그 방식의 위상추적 신호처리를 디지털로 구현한 것으로 안정화기를 채용하지 않고 이를 FOG에 적용하였을 때 0.26$\mu$rad/$^{\circ}C$의 온도의존성을 가지기 때문에 중급 이상의 FOG(fiber optics gyroscope)용 신호처리기로서는 문제가 있다. 온도드리프트는 위상변조를 위해 사용되는 위상변조기의 변조진폭과 위상지연의 온도드리프트에 의해 발생하는 것으로 FOG의 출력에서 위상변조신호의 고조파 성분의 비를 일정하게 함으로 써 광섬유 위상변조기의 동작을 안정화하여 FOG의 드리프트를 측정 불가한 수준으로 줄일 수 있었다.