• Journal of Positioning, Navigation, and Timing
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• 제6권1호
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• pp.35-41
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• 2017

Precise Point Positioning (PPP) method is based on dual-frequency data of Global Navigation Satellite Systems (GNSS). The recent multi-constellations GNSS (multi-GNSS) enable us to bring great opportunities for enhanced precise positioning, navigation, and timing. In the paper, the multi-GNSS PPP with a combination of four systems (GPS, GLONASS, Galileo, and BeiDou) is analyzed to evaluate the improvement on positioning accuracy and convergence time. GNSS observations obtained from DAEJ reference station in South Korea are processed with both the multi-GNSS PPP and the GPS-only PPP. The performance of multi-GNSS PPP is not dramatically improved when compared to that of GPS only PPP. Its performance could be affected by the orbit errors of BeiDou geostationary satellites. However, multi-GNSS PPP can significantly improve the convergence speed of GPS-only PPP in terms of position accuracy.

• 한국재료학회지
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• 제17권7호
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• pp.347-351
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• 2007

Vertical interconnect technology called 3D stacking has been a major focus of the next generation of IC industries. 3D stacked devices in the vertical dimension give several important advantages over conventional two-dimensional scaling. The most eminent advantage is its performance improvement. Vertical device stacking enhances a performance such as inter-die bandwidth improvements, RC delay mitigation and geometrical routing and placement advantages. At present memory stacking options are of great interest to many industries and research institutes. However, these options are more focused on a form factor reduction rather than the high performance improvements. In order to improve a stacked device performance significantly vertical interconnect technology with wafer level stacking needs to be much more progressed with reduction in inter-wafer pitch and increases in the number of stacked layers. Even though 3D wafer level stacking technology offers many opportunities both in the short term and long term, the full performance benefits of 3D wafer level stacking require technological developments beyond simply the wafer stacking technology itself.

• 에너지공학
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• 제2권1호
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• pp.83-94
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• 1993

엑서지의 개념을 이용하여 에너지변환시스템의 성능을 분석함으로써 시스템의 최적화의 시스템효율을 향상시킬 수 있는 방안을 모색하였다. 복합화력 열병합 발전 시스템을 운전방식에 따라 3가지 시스템조합으로 구분하고 이에 대한 엑서지효율, 그리고 시스템조합의 각 흐름들에 대한 엑서지량과 엑서지 손실량을 계산하였다. 또한 이 양들에 대한 경제적 가치를 평가하고 엑서지 효율이 낮고 비용이 많이 드는 장치를 규명하여 써브시스템의 교체와 보수·유지에 대한 우선 순위를 결정하였다. 이러한 결과는 에너지 변환시스템의 효율향상과 경제적 운영을 위한 계획수립에 도움을 줄 수 있다.

• 한국수학교육학회지시리즈A:수학교육
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• 제42권1호
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• pp.41-56
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• 2003

As the information society appears, the increasing power and access of personal computers along with wide spread use of the information technology has not only changed the landscape for communication but it has opened up new and exciting opportunities for education. One of the ways that information technology could help improve education is to be used in interactive communication to share the knowledge and experience of all the teachers as well as students. In this paper, the use and application of information communication technology[ICT] into mathematics classroom are described and showed several examples. furthermore, the web site design and developed for this study was introduced of the purpose of sharing the ideas about the knowledge and usage of the history of mathematics and examples of mathematical connections. The study suggests that enabling mathematics in incorporating of ICT by teachers and students requires more effort to be made in training teachers on the use and application of ICT into mathematics classroom.

• Journal of Information Technology Applications and Management
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• 제16권1호
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• pp.21-36
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• 2009

As the World Wide Web (WWW) has become a major channel for information delivery, the data accumulated in the Internet increases at an incredible speed, and it derives the advances of information search technologies. It is the search engine that solves the problem of information overloading and helps people to identify relevant information. However, as search engines become a powerful tool for finding information, the opportunities of plagiarizing have increased significantly in e-Learning. In this paper, we developed an online plagiarism detection system for detecting plagiarized documents that incorporates the functions of search engines and acts in exactly the same way of plagiarizing. The plagiarism detection system uses morpheme analysis to improve the performance and sentence-based comparison to investigate document comes from multiple sources. As a result of applying this system in e-Learning, the performance of plagiarism detection was improved.

• International Journal of Advanced Culture Technology
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• 제10권1호
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• pp.131-137
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• 2022

The importance of corporate culture for its development has always been a classic research. Through excellent corporate culture, we can analyze the secrets of company success and provide important reference significance for other company brands. Since the outbreak of COVID-19, Traditional Chinese Medicine (TCM) has greatly increased its international recognition with its excellent efficacy, which has brought development opportunities to the TCM industry. The object of this research is the Beijing Tongrentang Group Co., Ltd. Tongrentang is a representative of Chinese time-honored brands in TCM industry. It has a development history of more than 350 years. It carries the traditional Chinese culture and Chinese medicine culture. The corporate culture of Tongrentang was thus extended and developed into 'Benevolence & love', 'Honesty & trustworthiness' and 'Quality first'. We can see that a good corporate culture is particularly important. This paper studies the unique Corporate culture of Tongrentang, and the reasons of company success. Hoping to help the company through this paper, so as to improve the company in the future. And put forward a certain practical significance and value.

• Molecules and Cells
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• 제44권7호
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• pp.433-443
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• 2021

Multi-omics approaches are novel frameworks that integrate multiple omics datasets generated from the same patients to better understand the molecular and clinical features of cancers. A wide range of emerging omics and multi-view clustering algorithms now provide unprecedented opportunities to further classify cancers into subtypes, improve the survival prediction and therapeutic outcome of these subtypes, and understand key pathophysiological processes through different molecular layers. In this review, we overview the concept and rationale of multi-omics approaches in cancer research. We also introduce recent advances in the development of multi-omics algorithms and integration methods for multiple-layered datasets from cancer patients. Finally, we summarize the latest findings from large-scale multi-omics studies of various cancers and their implications for patient subtyping and drug development.

• 한국건설관리학회논문집
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• 제21권4호
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• pp.72-81
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• 2020

지속가능발전목표(SDGs)는 2030년까지 인류 사회 발전을 지속할 방안으로 제시한 17가지 목표로, 지속 가능한 경제발전 및 고용과 양질의 일자리 창출 등을 강조하는 도전과제를 추구하며 혁신적인 솔루션과 함께 변화하는 기업에게 새로운 시장과 비지니스 기회를 제공한다. 세계적으로 빈부격차, 고용불안, 고령화 등 구조적 문제에 직면하면서 사회적 가치와 경제적 성과의 중요성이 부각되며, SDGs를 이행하기 위한 국가적 차원의 디지털 전환 전략 수립을 통해 미래사회를 위한 사회기반시설을 건설하고 있다. 2019년 우리 정부는 저성장으로 인한 다양한 사회 구조적 문제 해결을 위해 생활 SOC에 대한 투자계획을 발표하였다. 본 연구의 목적은 사회기반시설의 구현 시 미래사회의 요구 반영의 중요성을 제기하며, 건설 3D 프린팅 사례를 통해 SDGs 이행이 생활 SOC 구축에 제공하는 비즈니스 기회를 도출하였다. 상상을 현실화한 이매지네이션을 통해 사회기반시설이 구현될 수 있다면 디지털 전환을 통한 새로운 비즈니스와 일자리 창출뿐만 아니라 지역사회 구성원에게 미래에 대한 자부심과 긍지를 고취 시켜 궁극적으로 경제적·사회적 가치를 동시에 창출할 수있을 것이다.

• 영재교육연구
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• 제20권3호
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• pp.655-679
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• 2010

본 연구는 수학영재교육 담당교사의 교수학습 전문성 향상을 위해 수학영재 수업 사례를 주로 Flanders 언어 상호작용 분석법과 TIMSS 비디오 분석법을 이용하여 분석하고 이를 통해 수학영재 수업을 어떻게 해야 하는 것인가에 대한 시사점을 주고자 시작되었다. 본 연구를 통하여 수학영재교육 담당교사의 영재수업 질적 제고 방안에 대한 심층적인 이해와 반성적 성찰의 계기가 되어 더 나은 교사로서의 삶을 계획하고 영재수업 전문가로서 발돋움하는 기회가 되었으면 한다.

• 디지털산업정보학회논문지
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• 제15권2호
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• pp.1-9
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• 2019

In this study, we constructed a system to operating and manage the resources of the Smart Library Reading Room automatically using the Internet of things. The persistent problem of smart library or unattended library is electric energy waste and efficient seat management. The electricity and seat layout management method of the existing library reading room is being treated as concentrated management in the central system. However, this approach results in wasting electricity and seats do not provide a fair opportunity for each user. In this study, IoT sensor was used to turn off electricity and empty seat for about 20 minutes, so that it could be marked as vacant and managed efficiently, so that opportunities for seats were evenly maintained. In the future, we will improve this and construct a model in the reading room of actual village library or school library, and analyze and reflect the result.