• International journal of advanced smart convergence
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• 제12권4호
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• pp.293-299
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• 2023

In recent years, with the rapid development of real-time rendering technology, the quality of the images produced by real-time rendering has been improving, and its application scope has been expanded from games to animation and advertising and other fields. This paper analyses the development status of real-time rendering technology in 3D animation by investigating the 3D animation market in China, which concludes that the number of 3D animations in China has been increasing over the past 20 years, and the number of 3D animations using real-time rendering has been increasing year by year and exceeds that of 3D animations using offline rendering. In this study, a real-time rendering and offline rendering 3D animation are selected respectively to observe the screen effect of characters, special effects and environment props, and analyse the advantages and disadvantages of the two rendering technologies, and finally conclude that there is not much difference between real-time rendering 3D animation and offline rendering 3D animation in terms of quality and the overall sense of view, and due to the real-time rendering of the characteristics of the WYSIWYG, the animation designers can better focus on the creation of art performance. Real-time rendering technology has a good development prospect and potential in 3D animation, which paves the way for designers to create 3D content more efficiently.

• 반도체디스플레이기술학회지
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• 제23권2호
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• pp.19-22
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• 2024

EtherCAT is an Ethernet-based fieldbus system standardized in IEC 61158 and SEMI, and widely used in the fields of factory automation, semiconductor equipment and robotics. In this paper, we summarize the current status of Xenomai real-time framework and RTnet, which are essential for Linux operating systems to operate in real-time, and implement a real-time EtherCAT master system with these open sources. The real-time performance of the implemented EtherCAT master is evaluated according to Intel network controllers 82574L, I219, I210, and I225, respectively. The results show that the implemented EtherCAT master provides precise control performance for control frequencies from 1KHz to 8KHz and similar performance for I219, I210, and I225, and relatively slightly larger jitter for 82574L.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.488-491
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• 2002

This growth if WWW(World Wide Web) with the spread of ADSL provides us with a variety of service that are the extensions of opportunities to get information. a various education methods by remote courses and electronic commerce. Remote Monitoring Server(RMS) that uses internet and WWW is constructed for chip mounter. Hardware base consists of RMS, chip mounter and C/S server. In this paper, we realize the remote management system with monitoring and diagnosis function to efficiently operate chip mounter the one of PCB assembly equipment. The remote management system for chip mounter consists of RMS(Remote Monitoring Server) and C/S server. RMS manages real-time information from chip mounter through TCP/IP. RMS that utilizes real-time information informs user of the actual output the operation status of chip mounter, user of the actual output, the operation status of chip mounter, the trouble code and the trouble description.

• 한국전자통신학회논문지
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• 제8권7호
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• pp.995-1002
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• 2013

본 연구는 선박과 주위상태를 기지국에서 실시간으로 모니터링하고 기록하는 선박 관리 시스템에 대한 연구이다. 독점적인 시스템 메세지가 통신에 중개되도록 설계되어 있다. 디바이스 표준에 의하여 특정시스템 메시지가 규격화되고, 시스템에 부착되어진 각 통신장치에 특정화되도록 설계하였다. 또한 새로운 구성으로 관리자에 의해 원격으로 결정될 수 있는 기지국에 메시지를 선박상태를 업데이트하는 방법을 결정하도록 설계하였다.

• 한국컴퓨터정보학회논문지
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• 제13권3호
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• pp.91-97
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• 2008

기존 CA(Certificate Authority)에서 인증서의 유효기간 및 클라이언트에서 폐지한 CRI (Certificate Revocation Information)를 관리하는데 있어서 많은 문제점이 있었다. 이를 해결하기 위한 여러 연구들이 행하여졌으나, 클라이언트 측면에서 인증서의 상태 정보를 실시간으로 검증할 수 있기에는 미흡하였다. 본 논문은 이러한 한계를 극복하기 위하여 분산 OCSP(On-line Certificate Status Protocol) 환경에서 새로운 CRI 운영 모델을 제안한다. CRL(Certificate Revocation Lists)을 분할하여 여러 OCSP 서버에게 최신의 CRL을 중복시키고, 그 외 CRL은 각 서버들에게 중복하여 분산시킨다. 이로써 기존의 CA의 병목현상을 줄이고, 전송되는 CRL의 크기도 효과적으로 줄임으로써 클라이언트가 인증서 상태를 실시간으로 검증할 수 있다.

• 대한안전경영과학회지
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• 제8권4호
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• pp.119-127
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• 2006

This paper deals with the middleware and S/W development of real time automatic attendance check management system using ubiquitous 900Mhz RFID(Radio Frequency Identification). This system supports the real time automatic attendance check and necessary data processing in class management. We expect to decrease the effort for class management and to upgrade the status of real time management of class.

• Geomechanics and Engineering
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• 제16권2호
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• pp.159-168
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• 2018

In this study, a real-time grouting management system based on the clogging theory was established to manage injection procedure in real time. This system is capable of estimating hydraulic permeability with the passage of time as the grout permeates through the ground, and therefore, capable of estimating real time injection distance and flow rate. By adopting the Controlled Injection Pressure (CoIP) model, it was feasible to predict the grout permeation status with the elapse of time by consecutively updating the hydraulic gradient and flow rate estimated from a clogging-induced alteration of pore volume. Moreover, a method to estimate the volume of the fractured gap according to the reduction in injection pressure was proposed. The validity of the proposed system was successfully established by comparing the estimated values with the measured field data.

• 한국철도학회논문집
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• 제13권1호
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• pp.23-30
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• 2010

4D CAD에 의한 건설공사 공정관리시스템은 가상건설기법의 그래픽에 의한 계획일정위주 공정관리에 중점을 두고 있으므로 실제 현장상황의 판단에 의한 진도관리가 어려운부분이 있다. 본 연구는 4D CAD기반의 공정관리에 현장 웹카메라를 갖춘 Telepresence 기법을 이용한 원격현장 실시간 진도관리 모니터링체계를 연동하는 공정관기시스템 개발을 시도하고 있다. 개발된 시스템은 철도시설공사에 적용하여 활용성을 검증하였으며, 4D CAD에 의한 계획 공정현황과 웹카메라에 의한 실시간 실제현장 영상을 비교하여 시각적 진도관리를 가능하게 할 수 있다.

• 한국태양에너지학회 논문집
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• 제40권3호
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• pp.1-20
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• 2020

In accordance with the Government's policy, renewable power generation is expanding very largely. This leads to increasing uncertainty in the power market and power system owing to the intermittent and fluctuating output characteristics of renewable power generators. Data on the acquisition of renewable power generators can be largely classified according to the operation of the power market and power system. Data on the settlement for the payment for the power amount are acquired in the power market, and real-time data for monitoring the status and output of the generators are acquired in the power system. However, renewable power generators operating in the power market have different acquisition cycles depending on the method of communication of the power meter. They acquire data only for settlement purposes and have no real-time data, which requires improvement. In this paper, the acquisition status is reviewed by classifying the data of renewable power generators into settlement and real-time data. In addition, measures and acquisition criteria for real-time data of renewable power generators for improving the acquisition method are proposed.

• 한국치위생학회지
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• 제21권5호
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• pp.555-565
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• 2021

Objectives: This study was conducted to analyze peri-implantitis bacteria and identify their associations with health status and health activities. Methods: Gingival sulcus fluid at the implant's periodontal pockets sampled from the participants were analyzed by multiplex real time PCR. Results: Participants had strains in the order of 100% F. nucleatum, 98.0% E. corrodens, and 96.0% P. micra, and the correlation between C. rectus and E. nodatum was high (p<0.01). Diabetic group (P. gingivalis, P. nigrescens) hypertension (P. nigrescens), group with four or more periodontal pockets (P. gingivalis, T. dentica, P. intermedia, E. nodatum, and C. rectum), smoking (P. micra, E. corrodens), drinking (T. dentola), and scaling groups (C. rectus) were found to have more strains (p<0.05). Conclusions: Representative pathogenic microorganisms detected in periodontal pockets of implants were similar to dental periodontal pockets; however there were differences in the amount and distribution of microorganisms, and they were affected by health status and health behavior.