• The Journal of the Korea Contents Association
• /
• v.21 no.4
• /
• pp.447-453
• /
• 2021

The whole world was confused, unintended "COVID-19". It has become a constant phenomenon, not a temporary one, and people are getting used to this era. Among them, We are combating the form of "the film" which is playing a role of a multiplex in Korean film industry. Now we have studied the development of the future korean industry based on the movie theater form through our cultural industry, New platform OTT. As a result for the research, the OTT platform, which is located in one genre today, should be regarded as an opportunity to develop films, and the movie theater, which is a part of the development of the film industry, differs from the OTT platform. with "memory of space", the result was that "The audience's footsteps can move again." The crisis of "COVID-19" should bring about the consequences of turning into opportunity.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2002.05a
• /
• pp.342-347
• /
• 2002

After the industrial revolution in 20 century, the world are preparing for new revolution that is society with knowledge for a basis such as IT(Information Technology), NT(Nano Technology) and BT(Bio Technology). Recently, NT is applied to various fields that are composed of science, industry, media and semiconductor-micro technology. It has need of IT that is ultra-precision positioning technology with strokes of many hundreds mm and maintenance of nm precision in fields of ultra micro process, ultra precision measurement, photo communication part and photo magnetic memory. Performance test of servo control system that is used ultra-precision positioning system with single plane X-Y stage is performed by simulation with Matlab. Analyzed for previous control algorithm and adapted for modern control theory, dual servo algorithm is developed by minimum order observer, and stability and priority on controller are secured. Through the simulation and experiments on ultra precision positioning, stability and priority on ultra-precision positioning system with single plane X-Y stage and control algorithm are secured by using Matlab with Simulink and ControlDesk made in dSPACE

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.34 no.8B
• /
• pp.822-829
• /
• 2009

A reader protocol is an interface between a host and RFID readers. There are several standards for reader protocol such as EPCglobal Low Level Reader Protocol (LLRP) 1.0.1, EPCglobal Reader Protocol (RP) 1.1, and ISO/IEC 15961/15962. Unfortunately, these standards focus on the passive RFID system, and so they are not appropriate for the active RFID system. In this paper, we implemented an efficient reader protocol for the active RFID system, which is based on EPCglobal LLRP 1.0.1, but smoothing/filtering functions of EPCglobal RP 1.1 are added. This protocol is designed to configure air interface parameters for active RFID readers and tags. It can reduce the amount of data transfer between the reader and host by filtering function, and can improve the performance of tag collection by smoothing function. In addition, it can remove inefficiency caused by tag memory data change according to the standards of ISO/IEC 15961/15962. In the real-world environment, we evaluated the performance of our implemented reader protocol using one RFID reader and 45 tags.

• Journal of the Institute of Convergence Signal Processing
• /
• v.6 no.4
• /
• pp.169-175
• /
• 2005

In recent, implementation of the embedded system is gradually in the spotlight of world-wide by information technology(IT) engineers. By this time, an implementation of real time system is limited on image acquisition and processing system in practical. In this paper, the USB camera interface system based on the embedded linux OS is implemented using USB 2.0 camera with low cost. This system can obtain image signals into the memory via X-hyper255B processor from USB camera. It is need to initialize USB camera by the Video4Linux for the kernel device driver. From the system image capturing and image processing can be performed. It is confirmed that the image data can be transformed to packet of Network File System(NFS) and connected to the internetwork, then the data can be monitored from the client computer connected to the internetwork.

• Korean Journal of Logic
• /
• v.22 no.1
• /
• pp.1-23
• /
• 2019

Gott, Carter, Leslie, Bostrom and so on, as Descartes did, have made the evidence that is "I am here as an observer" to support many other beliefs. Bostrom and others who studied observation selection effects are missing two points. First, the self-consciousness information of the ones who just came up is distinct from that of the ones who have awoken. The awoken 'I' can trace back by memory to the past, but the 'I' who just came up can not. Second, when calculating credence, we must distinguish the ones in the possible worlds from the ones in the actual worlds. An estimate of credence where only one possible world is actualized among all possible worlds, differs fundamentally from that where all possible worlds are actualized. Keeping these two points in mind, we have explored what is the nature of the self-consciousness information of the one who just came up. We examine in depth the two human embryos thought experiment.

• The Journal of the Korea Contents Association
• /
• v.12 no.6
• /
• pp.21-31
• /
• 2012

The virtual reality consists of a virtual space constructed similar to the reality and agents residing in it. Our virtual space refers to an orderly space that is governed by such physical properties as mass, gravity, friction, and associated rules on top of the usual visual rendering. To construct this virtual world we are to develop virtual agents behaving like humans and the environment surrounding them. In order to improve the existing reactive agents designed to act to their designers' dictation in predetermined space or memory into autonomous agents, we need diverse kinds of knowledge among others related to the spaces for the agents to act in. Our design and implementation focuses on the spatial knowledge among those diverse aspects of knowledge required. The developed knowledge representation scheme is used on a basis for realistic and efficient physical cyber-environment, and as the knowledge structure to simulate the virtual agents' knowledges on spaces.

• The Korean Journal of Applied Statistics
• /
• v.36 no.4
• /
• pp.295-307
• /
• 2023

The heterogeneous autoregressive (HAR) model is a simple linear model that is commonly used to explain long memory in the realized volatility. However, as realized volatility has more complicated features such as conditional heteroscedasticity, leverage effect, and volatility clustering, it is necessary to extend the simple HAR model. Therefore, to better incorporate the stylized facts, we propose a threshold HAR model with GARCH errors, namely the THAR-GARCH model. That is, the THAR-GARCH model is a nonlinear model whose coefficients vary according to a threshold value, and the conditional heteroscedasticity is explained through the GARCH errors. Model parameters are estimated using an iterative weighted least squares estimation method. Our simulation study supports the consistency of the iterative estimation method. In addition, we show that the proposed THAR-GARCH model has better forecasting power by applying to the realized volatility of major 21 stock indices around the world.

• Journal of KIISE:Computing Practices and Letters
• /
• v.14 no.2
• /
• pp.236-240
• /
• 2008

People use diary or photograph for recall-ing their memory in order to satisfy their desires for recording their lives. If the experienced events are organized to a story, S/he can share her/his experience with others, and recall her/his significant events easily. In this paper, we propose a method that generates a story with Petri net and user contexts collected from mobile device. Here, we use Petri-net as a representation method that links human activities or experience causally. It is appropriate solution for modeling parallel events in real world, and for representing non-linear story line. In order to show the usefulness of the proposed method, we show an example of generating a story of user's experience with user contexts from mobile device and evaluate them.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2022.05a
• /
• pp.491-493
• /
• 2022

Flood damage due to torrential rains and typhoons is occurring in many parts of the world. In this paper, we propose a water level prediction model using water level, precipitation, and humidity data, which are key parameters for flood prediction, as input data. Based on the LSTM and GRU models, which have already proven time-series data prediction performance in many research fields, different input datasets were constructed using the ASOS(Automated Synoptic Observing System) data and AWS(Automatic Weather System) data provided by the Korea Meteorological Administration, and performance comparison experiments were conducted. As a result, the best results were obtained when using ASOS data. Through this paper, a performance comparison experiment was conducted according to the input data, and as a future study, it is thought that it can be used as an initial study to develop a system that can make an evacuation decision in advance in connection with the flood risk determination model.

• The Bulletin of The Korean Astronomical Society
• /
• v.45 no.1
• /
• pp.55.3-56
• /
• 2020

유구한 전통을 배경으로 우리나라는 유네스코 세계기록유산을 세계 4위, 아시아 1위로 등재하여 기록물의 가치를 국제적으로 인정받고 있다. 이제는 세계 기록유산 16건이라는 등재 수량을 넘어, 활용도 증진을 통한 명실상부 질적 차원의 우수 세계 기록유산 보유국가로 성장해야 할 시기를 맞고 있다. 이러한 측면에서 기록유산의보편적 접근과 활용의 증진을 목적으로 하는 국제기록유산센터(ICDH, International Centre for Documentary Heritage)의 2019년 청주시 유치는 시사하는 바가 크다. 또 정부가 세계 기록유산의 다양한 활용 제고를 위한 지자체 협업 사업을 지원하기 시작한 것도 유의할만하다. 그러나 한국 천문학 분야에서는 세계 기록유산이 한 건도 지정되지 않아 우리나라의 우수한 과학적 성취가 담긴 사료들은 알려지지 않고 있으며, 체계적인 관리·보존도 미비한 상태다. 이에 이 연구는 한국 천문학 기록자원의 세계 기록유산 발굴과 등재 및 등재 이후 활용 증진을 위한 아웃리치 서비스의 방법론을 제언하는 데 목적을 가지며 다음 기획론을 제시하고자 한다. 먼저 한국 천문학 기록자원의 세계 기록유산 발굴을 위하여 유네스코의 등재평가기준과 참고할만한 등재과정의 선행사례를 분석한다. 다음으로, 등재 이후 정·관·학 협업의 체계적 관리보존과 공유체계를수립하는 방안을 모색하고자 한다. 이를 위하여 소장처와협업체간 분쟁의 소지가 될 수 있는 저작권 등 위험 요소와 참고할만한 국내외 협업의 선진사례를 분석한다. 마지막으로 한국 천문학계의 요구와 현실에 부합하는 기록학적방법론을 분석하여 한국 천문학 분야 세계 기록유산의 아웃리치서비스 방안을 제언하고자 한다. 이 연구는 천문학 분야에서 망실·훼손될 수 있는 기록 자원을 발굴하는 계기를 세계 기록유산에서 찾아, 천문학계에 새로운 연구의 장(場)을 창출하는 선순환을 도모했다는 점에서 의의가 있다. 그러나 선험적 기획이므로 과정상 발생할 수 있는 변수의 대처 방안과 유의성 분석 등 연구 결과 검증에는 한계가 있다. 향후 한국 천문학과의 협업으로 세계 기록유산과 관련한 사료 발굴과 가치 고증 등 학술적 이론 검증을 이어나가 다양한 학제 간 연구로 심화하길 기대한다.