• Journal of information and communication convergence engineering
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• 제1권4호
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• pp.169-173
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• 2003

The performance of modern mainframe computers keeps increasing due to the advances in the semiconductor technology. However, the quest for the faster computer has never been satisfied. To overcome the discrepancy in the supply and demand, we studied a high performance computer architecture utilizing a three-dimensional Holographic Data Storage Systems (HDSS) as a secondary storage system. The HDSS can achieve a high storage density by utilizing the third dimension. Furthermore, the HDSS can exploit the parallelism by processing the two-dimensional data in a single step. To compare the performance of the HDSS with the conventional hard disk based storage system, we modeled the HDSS using the DiskSim simulation engine and performed the simulation study. Results showed that the HDSS can improve the access time by 1.7 times.

• 보건교육건강증진학회지
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• 제32권4호
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• pp.47-57
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• 2015

Objectives: This study reviews literature on health literacy and provides communication guidelines and policy implications for addressing health literacy for the Korean population. Methods: EBSCOHost, JSTOR, ProQuest, Web of Science, and PubMed were searched using the term "health literacy." The present study also reviewed reports and publications released by governments and healthcare agencies. Results: By reviewing existing articles and reports, the present study provides following suggestions : (a) implementation of a national health literacy survey on a regular basis, (b) development of tailored health literacy interventions for different target segments, (C) development of an appropriate model to evaluate the effectiveness of health literacy programs, and (d) development of health literacy guidelines for distributing health information and educating healthcare professionals. Conclusions: Health literacy issues must be addressed through establishment of appropriate policies and guidelines as well as collaboration between government and healthcare organizations.

• Transactions on Electrical and Electronic Materials
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• 제11권3호
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• pp.106-111
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• 2010

The convergence of significantly different and disparate technologies such as spintronics, carbon nano tube field effect transistors, photon and bio-responsive molecular switches, memristor and memristive systems and metamaterials, coupled with energy scavenging sources are gaining a renewed focus in the quest for new products. This paper will provide an insight into an anticipated technological revolution and will highlight a futuristic Roadmap to capture opportunities that are brought about as the results of formulation of new circuit components basically driven by emergence of nanoscale materials as part of System on System integration. Challenges as the result of new lumped components such as memristor, metamaterial-based lumped components and the like that will challenge the designers' comfort zone will also be discussed.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 학술대회 논문집 정보 및 제어부문
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• pp.192-194
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• 2005

Acceptance of the international standards for video compression, such as H.261, MPEG-1 and MPEG-2, along with the developments in video codec hardware, has created an explosion of application. Among these, the long time quest for long-distance digital video transmission causes an increasing interest in transporting compressed video over networks which are nontraditional for this purpose, including asynchronous transfer mode networks, the Internet, and cellular and wireless channels. Transmission of compression video over packet network is improved for error resilience. And layered video coding techniques improves error resilience. We present a efficient method of scalable video coding for low bandwidth.

• Child Health Nursing Research
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• 제12권1호
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• pp.114-121
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• 2006

Purpose: Humor is an important part of life. Humor has many benefits as an intervention for hospitalized children. Humor is one strategy that pediatric nurses can use to help children cope with illness and hospitalizations. The purposes of the study were to 1) review the definition of humor, 2) identify methods and skills in using humor as an intervention, 3) identify the effects of humor as an intervention, and 4) suggest further research. Method: The design was a descriptive study with literature review. Previous studies were identified by searches of MEDLINE, CHNIAL, PUBMED and ProQuest. Results: Humor has positive physiological, psychological, social and communicative effects on patients and humor has a positive effect on the immune system. Conclusion: The main point identified from this study suggests that humor as a nursing intervention be developed for nurses to use with children who are hospitalized. Further research is needed to develop programs for humor as an intervention for health promotion and disease prevention in children.

• 한국게임학회 논문지
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• 제20권4호
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• pp.47-56
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• 2020

본 연구는 프라스카가 제시한 파이디아와 루두스의 개념을 통해 오픈 월드의 중첩적 플레이 구성 형식을 고찰한다. 구조화된 시뮬레이션적 체계로 구성된 오픈 월드는, 비선형적 이벤트와 선형적 퀘스트를 통해 광활한 지리적 공간을 중첩적으로 구성한다. 이때 파이디아적 상호작용 과정을 통해 공간을 탐험하며 고유의 시퀀스를 축적한 플레이어는, 완결적 스크립트를 기반하는 루두스적 퀘스트의 결과와 충돌한다. 대안으로 제시된 메타시뮬레이션은 메타 모델의 편집 및 생성 도구로 운용되며, 대안적이고 확장된 의미의 게임 플레이 활용을 제시한다.

• 천문학회보
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• 제42권2호
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• pp.81.2-81.2
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• 2017

Polarized mid-infrared emission from polycyclic aromatic hydrocarbons (PAHs) can provide a crucial test of basic physics of alignment of nanoparticles and opens a potential new window into studying magnetic fields. In this talk, I will present a new model of polarized PAH emission that takes into account the effect of PAH alignment with the magnetic field due to resonance paramagnetic relaxation. I will then present our predictions for the polarization level of the strong PAH emission features from the interstellar medium. I will present the first detection of polarization of PAH emission at 11.3micron which is consistent with our theoretical prediction. Finally, I will discuss important implications of this work for tracing magnetic fields via mid-IR PAH features and for constraining the polarization of anomalous microwave emission that is useful for the quest of CMB B-modes.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2003년도 춘계학술대회 논문집
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• pp.890-894
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• 2003

This paper discuss basic functional construction and plant layout of a ELV dismantling system that can maximize the reusability of tarts and the recoverability of materials by dismantling ELV rationally and efficiently. "Island" type was selected for the system configuration considering processing amount, economical efficiency, and effectiveness. The system is supported by the information system, and composed of dismantling stations and handling equipments. The layout of the stations was determined after simulation and optimization using commercial software package, Arena and OptQuest. The objective of the optimization was maximum profit while the system capacity is considered as constraint. The environmental load of ELV can be minimized when the composition and function of each station are embodied in detail and the system is interfaced with shredding operation.

• Journal of the Korean Data and Information Science Society
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• 제16권4호
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• pp.769-780
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• 2005

Recently, the discretization algorithms for continuous data have been actively studied. But there are few articles to compare the efficiency of these algorithms. In this paper we introduce the principles of some binary discretization algorithms including C4.5, CART and QUEST and investigate the efficiency of these algorithms through numerical study. For various underlying distribution, we compare these algorithms in view of misclassification rate and MSE. Real data examples are also included.

• 제어로봇시스템학회논문지
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• 제14권9호
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• pp.865-872
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• 2008

Spacecraft attitude estimation using the nonlinear unscented filter is addressed to fully utilize capabilities of the unscented transformation. To release significant computational load, an efficient technique is proposed by reasonably removing correlation between random variables. This modification introduces considerable reduction of sigma points and computational burden in matrix square-root calculation for most nonlinear systems. Unscented filter technique makes use of a set of sample points to predict mean and covariance. The general QUEST(QUaternion ESTimator) algorithm preserves explicitly the quaternion normalization, whereas extended Kalman filter(EKF) implicitly obeys the constraint. For spacecraft attitude estimation based on quaternion, an approach to computing quaternion means from sampled quaternions with guarantee of the quaternion norm constraint is introduced applying a constrained optimization technique. Finally, the performance of the new approach is demonstrated using a star tracker and rate-gyro measurements.