• 제목/요약/키워드: 융합구조

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A Study on Communication Signal Processing using UWB for On-body WBAN Systems (On-body WBAN 시스템을 위한 통신 신호 처리 기법에 관한 연구)

  • Kim, Jaehwan;Oh, Mi Kyung;Lee, HyungSoo;Kim, Jae-Young;Choi, Eunjeong
    • Proceedings of the Korea Information Processing Society Conference
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    • 2009.11a
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    • pp.561-562
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    • 2009
  • On-body WBAN 시스템은 저속 생체 정보 전달과 고속 멀티미디어 통신을 모두 지원할 수 있는 시스템 구조를 가져야 한다. 게다가 WBAN 시스템의 특성상 최대한 저전력 구현이 가능한 시스템 설계가 수반되어야 한다. 본 논문에서는 UWB를 이용하여 다중 속도 지원이 가능한 On-body WBAN 시스템 구조를 제안한다. 제안된 시스템은 Block-Coded Group PPM 변조 기법을 사용하여 데이터 신뢰도를 높일 수 있다.

Efficient Implementation of Cryptography on GPU and GPU Resistance of Cryptography (GPU 상에서의 최적화 암호 구현과 암호의 GPU 내성)

  • Seo, Hwa-Jeong;Kwon, Hyeok-Dong;Kim, Hyun-Jun;Eum, Si-Woo;Sim, Min-Joo
    • Proceedings of the Korea Information Processing Society Conference
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    • 2021.11a
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    • pp.263-266
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    • 2021
  • GPU 상에서의 효율적인 암호 구현을 위해서는 GPU 내부의 자원인 메모리와 명령어셋을 구현하고자 하는 암호 구조에 맞추어 사용하는 것이 중요하다. 본 논문에서는 Blowfish와 RC4를 최신 GPU 프로세서 상에서 최적 구현해 보고 성능을 저하시키는 요인들과 향상시키는 요인들을 비교 분석한다. 특히 파일암호화와 패스워드 크래킹에서 발생하는 암호화 구현 고려 사항에 대해 확인하며 해당 특징이 GPU 암호 구현 상에서 미치는 영향에 대해 확인해 보도록 한다. 마지막으로 앞에서 구현한 결과물의 성능을 저하시키는 요소에 대한 분석을 기반으로하여 높은 GPU 내성을 가지는 암호 설계를 위해 필요한 구조에 대해 확인해 보도록 한다.

Ultrastructural Studies for Protoplasts and Protoplast Fusion in Streptomyces lavendulae (Streptomyces levendulae의 원형질체와 원형질체 융합에 대한 미세구조)

  • 하영칠;홍순우;유진철;임헌만
    • Korean Journal of Microbiology
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    • v.24 no.3
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    • pp.197-203
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    • 1986
  • Morphology and ultrastructure of protoplast fusion mode in Streptomyces lavendulae were studied by scanning and transmission electron microscopy. The isolated protoplasts were stable in some degree in hypertonic solution except that several protoplasts showed irregular morphology. Fusion events were occurred as follows; contact zone, fusion zone and separation zone were appeared sequentially. After formation of the separation zone, cytoplasm and DNA from both parents were mixed eventually. In the contact zone, two menbranes were still separated by electron transparent space. The contact zone changed to fusion zone by formation of fusion membrane that phospholipid molecules of two membranes were rearranged. Thereafter, nonmembraneous separation zone was formed by disappearance of fusion membrane. These changes were characterized by successive changes in typical membrane structure in fusion areas and by a progressive loss of bispherical shape.

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Controllable data augmentation framework based on multiple large-scale language models (복수 대규모 언어 모델에 기반한 제어 가능형 데이터 증강 프레임워크)

  • Hyeonseok Kang;Hyuk Namgoong;Jeesu Jung;Sangkeun Jung
    • Annual Conference on Human and Language Technology
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    • 2023.10a
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    • pp.3-8
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    • 2023
  • 데이터 증강은 인공지능 모델의 학습에서 필요한 데이터의 양이 적거나 편향되어 있는 경우, 이를 보완하여 모델의 성능을 높이는 데 도움이 된다. 이미지와는 달리 자연어의 데이터 증강은 문맥이나 문법적 구조와 같은 특징을 고려해야 하기 때문에, 데이터 증강에 많은 인적자원이 소비된다. 본 연구에서는 복수의 대규모 언어 모델을 사용하여 입력 문장과 제어 조건으로 프롬프트를 구성하는 데 최소한의 인적 자원을 활용한 의미적으로 유사한 문장을 생성하는 방법을 제안한다. 또한, 대규모 언어 모델을 단독으로 사용하는 것만이 아닌 병렬 및 순차적 구조로 구성하여 데이터 증강의 효과를 높이는 방법을 제안한다. 대규모 언어 모델로 생성된 데이터의 유효성을 검증하기 위해 동일한 개수의 원본 훈련 데이터와 증강된 데이터를 한국어 모델인 KcBERT로 다중 클래스 분류를 수행하였을 때의 성능을 비교하였다. 다중 대규모 언어 모델을 사용하여 데이터 증강을 수행하였을 때, 모델의 구조와 관계없이 증강된 데이터는 원본 데이터만을 사용하였을 때보다 높거나 그에 준하는 정확도를 보였다. 병렬 구조의 다중 대규모 언어 모델을 사용하여 400개의 원본 데이터를 증강하였을 때에는, 원본 데이터의 최고 성능인 0.997과 0.017의 성능 차이를 보이며 거의 유사한 학습 효과를 낼 수 있음을 보였다.

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Discovery of Market Convergence Opportunity Combining Text Mining and Social Network Analysis: Evidence from Large-Scale Product Databases (B2B 전자상거래 정보를 활용한 시장 융합 기회 발굴 방법론)

  • Kim, Ji-Eun;Hyun, Yoonjin;Choi, Yun-Jeong
    • Journal of Intelligence and Information Systems
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    • v.22 no.4
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    • pp.87-107
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    • 2016
  • Understanding market convergence has became essential for small and mid-size enterprises. Identifying convergence items among heterogeneous markets could lead to product innovation and successful market introduction. Previous researches have two limitations. First, traditional researches focusing on patent databases are suitable for detecting technology convergence, however, they have failed to recognize market demands. Second, most researches concentrate on identifying the relationship between existing products or technology. This study presents a platform to identify the opportunity of market convergence by using product databases from a global B2B marketplace. We also attempt to identify convergence opportunity in different industries by applying Structural Hole theory. This paper shows the mechanisms for market convergence: attributes extraction of products and services using text mining and association analysis among attributes, and network analysis based on structural hole. In order to discover market demand, we analyzed 240,002 e-catalog from January 2013 to July 2016.

A Convergence Study through the Structural Analysis due to the Shape of Automotive Roof Rack (자동차 루프랙의 형상에 따른 구조 해석을 통한 융합 연구)

  • Choi, Kye-Kwang;Cho, Jae-Ung
    • Journal of the Korea Convergence Society
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    • v.10 no.12
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    • pp.257-262
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    • 2019
  • Recently, the number of people enjoying various leisure sports has increased. As a result, the vehicles with various items loaded onto the roof can be easily seen on the street. The device that enables loading on the vehicle roof is called by a rack, and each vehicle has its own different shape. There are various types of roof racks but they must have the strength and durability to load heavy loads. In this study, the structural analysis was performed according to the support method of the roof rack and the shape of the fixture. Of three models, it was shown that model C had the best durability. Therefore, this study result shows which shape of the roof rack is most stable among the models. By utilizing the design data about a convergence study through the structural analysis due to the shape of automotive roof rack obtained on the basis of this result, the esthetic feeling can be shown by being converged onto the part of automobile at actual life.

A Convergence Study through Durability Analysis due to the Configuration of Automotive Lift (자동차 리프트 형상에 따른 내구성 해석을 통한 융합 연구)

  • Choi, Kye-Kwang;Cho, Jae-Ung
    • Journal of the Korea Convergence Society
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    • v.10 no.12
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    • pp.281-286
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    • 2019
  • To repair the underside of the car, a repairman has to enter under the car body. But this work can make it difficult for him to fix it and the injuries can occur. To solve these difficult problems, the developed equipment is the automotive lift. In this study, three kinds of lift models 1, 2 and 3 were designed and the material properties of the structural steel were applied. As the same load were applied under the same conditions on all models, the structural analyses were conducted. Models 2 and 3 were shown to have the structural deformation less than model 1. Also, models 2 and 3 were shown to be more stable than model 1 structurally. By utilizing the design data on a convergence research through durability analysis according to the configuration of automotive lift obtained on the basis of this result, the esthetic feeling can be shown by being converged onto the automotive repair equipment parts at actual life.

A Study on Developing Archival Authority Records through Analyzing Descriptive Elements and Applying EAC-CPF in University Archives: Converging Archival Information Descriptive Rules with Data Structure Standards (대학기록물 전거레코드 구축을 위한 기술요소 분석과 EAC-CPF 적용에 관한 연구: 기록물 기술규칙과 데이터구조표준의 융합을 중심으로)

  • Kim, Moon-kyung;Koo, Joung Hwa
    • Journal of the Korea Convergence Society
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    • v.12 no.1
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    • pp.65-75
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    • 2021
  • The research aims to suggest descriptive elements for developing archival authority records in university archives through converging archival information descriptive rules with EAC-CFP, data structure standards. To achieve the purpose, the research conducted the following research phases: first, to analyze the main characteristics of record producers according to the features of both functions and organizations of the university. Second, to analyze the descriptive elements by comparing the rules between ISAAR(CPF) and the guidelines of the authority records of NAK and suggest descriptive elements to build archival authority records. Finally, to suggest the finally deducted descriptive elements by matching up with those of EAC-CPF. The significance of the result is to provide both standardized access points to retrieve university records and to search the contextual information of record production in the online environments by converging the data standard structure, EAC-CPF.

A Convergence Study through Durability Analysis due to the Number of Automotive Seat Frame Supports (자동차 시트 프레임 지지대 개수에 따른 내구성 해석을 통한 융합연구)

  • Choi, Gye-Gwang;Cho, Jae-Ung
    • Journal of the Korea Convergence Society
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    • v.9 no.8
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    • pp.155-160
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    • 2018
  • Automotive seat is a part to supply the convenience and safety of driver at driving. Recently, the seat has the role to protect driver from the outside impact or vibration and give the convenience except such a usage as chair. The design on structural function of the seat frame is important like the impact safety and durability. In this study, the seat is designed by adding one hollow rod to the part of seat back frame in order to enhance the structural safety and durability. This study was carried out by using CATIA and ANSYS as the design and analysis programs. As this study result through the structural and vibrational analyses, model 4 was seen to have the durability more superior than the other models. By utilizing this result, it is thought to be the useful material at designing the automotive seat frame with durability. It is possible to be grafted onto the convergence technique at the automotive seat frame and show the esthetic sense.

Consideration of Evo-Devo in the Morphogenesis of Fractal Structures in Ammonites (융합연구를 위한 프랙털 생성의 Evo-Devo 생물학적 고찰)

  • Lee, Yu-Ri;Kim, Oc-Hee;Kim, Cheol-Hee
    • Journal of the Korea Convergence Society
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    • v.8 no.8
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    • pp.185-190
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    • 2017
  • Fractal patterns are visible regularities of form found in the natural world. The mathematics of fractals can explain spiral growth patterns of self-similarity in organisms. For example, ammonites have complex but regular patterns of suture lines, resulting in a fractal-like display. In this study, a small region (less than 1mm diameter) of the spiral center of a rarely well preserved ammonite (Eogaudryceras sp.) was examined under microscope. Interestingly, we found a differential change of suture shapes at early stages of animal development providing a model for the study of Evo-devo (evoutionary developmental biology). Evo-devo is a convergence science born out of the recognition of complexity from interactions between generative and adaptive forces.