• Annual Conference of KIPS
• /
• 2013.11a
• /
• pp.1149-1151
• /
• 2013

본 연구는 영화 콘텐츠의 배경(공간적/시간적)에 해당하는 키워드를 자동으로 추출하는 기법을 제안한다. 제안된 기법은 영화 콘텐츠들의 리뷰 텍스트 데이터를 웹 상으로부터 수집하는 과정, 수집된 텍스트 리뷰 데이터의 전처리 과정에 해당하는 형태소 분석 및 개체명인식 과정, 마지막으로 통계적 기법을 이용하여 최종적으로 배경에 해당하는 단어를 선택하는 과정으로 이루어진다. 자동으로 추출된 배경 정보는 사용자 평가를 통하여 정확도를 측정하였으며, 자동 생성된 배경 정보를 이용하여 영화 콘텐츠의 검색 및 추천 등에 다양하게 사용될 수 있을 것으로 예상된다.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2010.05a
• /
• pp.1447-1448
• /
• 2010

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2023.01a
• /
• pp.69-70
• /
• 2023

본 논문은 디지털시대의 변화와 코로나 19로 인해 차세대 디지철 시대는 새로운 교육 환경으로 진화하고 변화하는 교육 페러다임이 바뀌고 있다. 최근 지속적으로 성장하고 인기 있는 AR, VR 현장 실감형 콘텐츠를 교육에 활용 할 때 더욱 학습 효과가 있다는 다양한 이론과 사례분석을 통해 교육과정, 비 교육과정에 직접 접목하여 활용하고 그 효과를 통한 모형을 제시하여 수업의 질적 양적 향상에 기여하고자 한다.

• Journal of the Institute of Electronics Engineers of Korea TC
• /
• v.46 no.8
• /
• pp.50-58
• /
• 2009

Fourth generation mobile communication network have the technology of extensive form include basic service technology and it has been developed from the radio access technology and network topology. Not only fourth generation mobile communication network have basically done new highspeed radio access technology which is suitable to high and low speed environment of transfer, but also it is possible that they have been made for freely vertical handover. ETRI also has made fourth generation mobile communication network which is WiNGS(Wireless Initiative for Next Generation Service) satisfied that demand. This paper is made by lossless handover method through the local retransmission ARQ agent that is one of the main technology of fourth generation mobile communication network. Lossless handover method through local retransmission ARQ agent has been basically made by WiNGS and it was better than original local retransmission of layer by simulation.

• Journal of Internet Computing and Services
• /
• v.23 no.1
• /
• pp.113-124
• /
• 2022

In wartime conditions, the communication system of military aircraft is exposed to jamming, and it is necessary to mount communication equipment with high anti-jamming performance in order to perform air operations smoothly even in an environment where jamming attempts are made. In this paper, we check in detail the jamming and anti-jamming technology that can be applied to wireless communication, and the data disclosed on the difference in specifications of the next-generation anti-jamming radio with frequency hopping method and the improvement of anti-jamming performance according to these changes. It was briefly analyzed within the scope. In addition, the points to be considered when designing a new domestic aircraft and the possibility of installing the next-generation anti-jamming communication equipment on the currently operating aircraft were confirmed, and the tactical usefulness of improving the anti-jamming capability of the next-generation anti-jamming communication equipment was confirmed.

• The KSFM Journal of Fluid Machinery
• /
• v.15 no.6
• /
• pp.11-17
• /
• 2012

The one way fluid structure interaction analysis on advanced propeller blade for next generation turboprop aircraft. HS1 airfoil series are selected as a advanced propeller blade airfoil. Adkins method is used for aerodynamic design and performance analysis with respect to the design point. Adkins method is based on the vortex-blade element theory which design the propeller to satisfy the condition for minimum energy loss. propeller geometry is generated by varying chord length and pitch angle at design point. Blade sweep is designed based on the design mach number and target propulsion efficiency. The aerodynamic characteristics of the designed Advanced propeller were verified by CFD(Computational Fluid Dynamic) and showed the enhanced performance than the conventional propeller. The skin-foam sandwich structural type is adopted for blade. The high stiffness, strength carbon/epoxy composite material is used for the skin and PMI(Polymethacrylimide) is used for the foam. Aerodynamic load is calculated by computational fluid dynamics. Linear static stress analysis is performed by finite element analysis code MSC.NASTRAN in order to investigate the structural safety. The result of structural analysis showed that the design has sufficient structural safety. It was concluded that structural safety assessment should incorporate the off-design points.

• Korean Journal of Optics and Photonics
• /
• v.14 no.2
• /
• pp.194-199
• /
• 2003

The analysis of operation characteristics of a miniaturized electrostatic electron lens system called an Einzel lens was performed using a simulation tool of FCM method. The potential distributions of Einzel lenses operated both in retarding and accelerating modes show similar features. But the electric fields determined from the potential distributions show opposite directions, which results in different features in the electron beam trajectory in each mode of operation. For the same working distance, focusing voltage in the accelerating mode is higher than that in the retarding mode.

• Molecules and Cells
• /
• v.37 no.1
• /
• pp.36-42
• /
• 2014

The tomato (Solanum lycopersicum L.) is a model plant for genome research in Solanaceae, as well as for studying crop breeding. Genome-wide single nucleotide polymorphisms (SNPs) are a valuable resource in genetic research and breeding. However, to do discovery of genome-wide SNPs, most methods require expensive high-depth sequencing. Here, we describe a method for SNP calling using a modified version of SAMtools that improved its sensitivity. We analyzed 90 Gb of raw sequence data from next-generation sequencing of two resequencing and seven transcriptome data sets from several tomato accessions. Our study identified 4,812,432 non-redundant SNPs. Moreover, the workflow of SNP calling was improved by aligning the reference genome with its own raw data. Using this approach, 131,785 SNPs were discovered from transcriptome data of seven accessions. In addition, 4,680,647 SNPs were identified from the genome of S. pimpinellifolium, which are 60 times more than 71,637 of the PI212816 transcriptome. SNP distribution was compared between the whole genome and transcriptome of S. pimpinellifolium. Moreover, we surveyed the location of SNPs within genic and intergenic regions. Our results indicated that the sufficient genome-wide SNP markers and very sensitive SNP calling method allow for application of marker assisted breeding and genome-wide association studies.

• Proceedings of the KIEE Conference
• /
• 1992.07a
• /
• pp.106-109
• /
• 1992

This paper Introduces the concept of the generation cost of generating utilities and its calculation methods. Also, the economic evaluation method using generation cost which is called as a screening curve method will be presented along with the benefits and disadvantages of this concept. Next, the least-cost electric utility planning techniques which is used very widely in many countries will be Introduced In comparison with screening curve method. In this aspects, the optimal dynamic mix can be determined as a result. By comparing these two concepts, we will get the concrete concept why the economic evaluation method using generation cost can not be used for the future generation expansion planning.

• Clinical and Experimental Pediatrics
• /
• v.63 no.6
• /
• pp.211-212
• /
• 2020