• 제목/요약/키워드: C-embedding

검색결과 139건 처리시간 0.025초

ORBITAL LIPSCHITZ STABILITY AND EXPONENTIAL ASYMPTOTIC STABILITY IN DYNAMICAL SYSTEMS

  • Kim, Jong-Myung;Kye, Young-Hee;Lee, Keon-Hee
    • 대한수학회지
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    • 제35권2호
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    • pp.449-463
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    • 1998
  • In this paper we introduce the notions of orbital Lipschitz stability (in variation) and orbital exponential asymptotic stability (in variation) of $C^{r}$ dynamical systems (or $C^{r}$ diffeomor-phisms) on Riemannian manifolds, and study the embedding problem of those concepts in $C^{r}$ dynamical systems.stems.

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FATOU THEOREM AND EMBEDDING THEOREMS FOR THE MEAN LIPSCHITZ FUNCTIONS ON THE UNIT BALL

  • Cho, Hong-Rae;Lee, Jin-Kee
    • 대한수학회논문집
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    • 제24권2호
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    • pp.187-195
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    • 2009
  • We investigate the boundary values of the holomorphic mean Lipschitz function. In fact, we prove that the admissible limit exists at every boundary point of the unit ball for the holomorphic mean Lipschitz functions under some assumptions on the Lipschitz order. Moreover, we get embedding theorems of holomorphic mean Lipschitz spaces into Hardy spaces or into the Bloch space on the unit ball in $\mathbb{C}_n$.

EMBEDDING OF WEIGHTED $L^p$ SPACES AND THE $\bar{\partial}$-PROBLEM

  • Cho, Hong-Rae
    • East Asian mathematical journal
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    • 제19권1호
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    • pp.73-80
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    • 2003
  • Let D be a bounded domain in $\mathbb{C}^n$ with $C^2$ boundary. In this paper, we prove the following inequality $${\parallel}u{\parallel}_{p_2,{\alpha}_2}{\lesssim}{\parallel}u{\parallel}_{p_1,{\alpha}_1}+{\parallel}\bar{\partial}u{\parallel}_{p_1,{\alpha}_1+p_1}/2$$, where $1{\leq}p_1{\leq}p_2<\infty,\;{\alpha}_j>0,(n+{\alpha}_1)/p_1=(n+{\alpha}_1)/p_1=(n+{\alpha}_2)/p_2$, and $1/p_2{\geq}1/p_1-1/2n$.

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Watermarking of Compressed Video in the Bitstream Domain: An Efficient Algorithm and its Implementation

  • ;임성준;한병완;장항배;김경규
    • 한국통신학회논문지
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    • 제31권4C호
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    • pp.458-471
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    • 2006
  • Digital watermarking of multimedia data is a very active research area that has enjoyed a considerable amount of attention in recent years. In this paper, we propose an algorithm for embedding/detecting a fragile watermark in MPEG-4 compressed video domain (Simple and Advance Simple Profiles). The watermark bits are put directly into Huffman VLC-codespace of quantized DCT domain. The advantage of watermark embedding into the compressed domain is the significant savings for a real-time implementation as it does not require a full decoding operation. The watermark embedding does not change the video file size. The algorithm demonstrates high watermarking capacity, thereby providing reliable foolproof authentication. The results of experimental testing demonstrate that watermark embedding preserves the video quality. Watermark detection is performed without using the original video.

탄화규소의 액상소결 (Liquid Phase Sintering of Silicon Carbide)

  • 김원중;김영욱
    • 한국세라믹학회지
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    • 제32권10호
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    • pp.1162-1168
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    • 1995
  • Systematic studies of the effects of additives and processing variables on the sintered density and the effect of crystalline forms of starting powders on the microstructure of pressureless sintered silicon carbide are described. Oxide additives were effective for the densification of SiC up to 96% of theoretical density at temperature as low as 185$0^{\circ}C$. Use of embedding powder increased the sintered density, up to 98% of theoretical density, by decreasing the weight loss during sintering. Composite type duplex microstructure has been developed due to the $\beta$longrightarrow$\alpha$ phase transformation of SiC by sintering at 185$0^{\circ}C$ and heat treatment at 195$0^{\circ}C$ for 1h.

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A study on the Extraction of Similar Information using Knowledge Base Embedding for Battlefield Awareness

  • Kim, Sang-Min;Jin, So-Yeon;Lee, Woo-Sin
    • 한국컴퓨터정보학회논문지
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    • 제26권11호
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    • pp.33-40
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    • 2021
  • 고도화된 무기체계와 복잡한 전략으로 인하여 지휘관이 분석하고 판단해야 할 정보의 복잡도가 증가하고 있다. 지휘관의 적시적 판단을 위해서 전장의 정보를 지식화하고 분석할 수 있는 지능형 서비스가 필요하다. 지능형 서비스는 전장상황 정보로부터 지식을 추출하는 단계와 지식베이스를 구축하는 단계, 지식베이스로부터 전장상황을 분석하는 단계로 구성된다. 본 논문은 두 번째 단계에서 구축 완료된 지식베이스를 임베딩함으로써 입력 쿼리와 유사한 정보를 추출하는 방안을 연구한다. 지식베이스 임베딩을 위해 문장화 과정이 필요하며 random-walk 알고리즘을 적용한다. 문장화된 정보는 Word2Vec을 활용하여 벡터화되고 코사인 유사도를 통해 입력 쿼리와 유사한 정보를 찾는다. 본 논문에서는 오픈 지식베이스로부터 98개 개체를 기준으로 980개의 문장을 생성하고 100차원의 벡터로 임베딩함으로써 코사인 유사도 기반 유사 개체가 추출됨을 확인했다.

Design, Implementation, and Tests of KOMPSAT-2 S/W simulator

  • Lee, Sang-Uk;Cho, Sung-Ki;Kim, Jae-Hoon
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2003년도 ICCAS
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    • pp.706-710
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    • 2003
  • In this paper, we will present brief design feature, implementations, and tests for verification of KOMPSAT-2 simulator, which is a subsystem of KOMPSAT-2 MCE. SIM is implemented on PC server to minimize costs and troubles on embedding onboard flight software into SIM, OOA/OOD methodology is employed to maximized S/W reusability, and XML is used for S/C characteristics, TC, TM and Simulation data instead of commercial DB. Consequently, we can reduce costs for the system, efforts embedding flight software, and maximize software reusability. SIM subsystem test was performed successfully.

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특이치 분해와 Fuzzy C-Mean(FCM) 클러스터링을 이용한 벡터양자화에 기반한 워터마킹 방법 (An Watermarking Method based on Singular Vector Decomposition and Vector Quantization using Fuzzy C-Mean Clustering)

  • 이병희;강환일;장우석
    • 한국정보과학회:학술대회논문집
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    • 한국정보과학회 2007년도 가을 학술발표논문집 Vol.34 No.2 (D)
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    • pp.7-11
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    • 2007
  • In this paper the one of image hide method for good compression ratio and satisfactory image quality of the cover image and the embedding image based on the singular value decomposition and the vector quantization using fuzzy c-mean clustering is introduced. Experimental result shows that the embedding image has invisibility and robustness to various serious attacks.

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