• Title/Summary/Keyword: Function Representation

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Application Types and Meanings of Fashion Engineering in Fashion Brand CuteCircuit (패션 브랜드 CuteCircuit에 나타난 패션 공학의 적용 유형과 의미)

  • Kim, Jang-Hyeon;Kim, Young-Sam
    • Fashion & Textile Research Journal
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    • v.20 no.3
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    • pp.245-256
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    • 2018
  • This study considers application types and meanings of fashion engineering by analyzing CuteCircuit. The conclusions of this study are as follows. The application type of fashion engineering shown in CuteCircuit is first, electronic fashion, which attaches LED or WL on the surface of clothes to express the decorative function in clothes as optical light change, ultimately performing one-dimensional function. Second, interactive fashion is a medium in which clothing connects human beings with other human beings with sensors that can recognize the changes in tactile or movement with the wearer or with a light source that can visualize the emotional changes of the wearer. Third, scientific fashion has emerged as a new type of fashion in which new materials introduced in the field of engineering are fused with clothing to expand functionality and aesthetics. The meanings of fashion engineering in CuteCircuit is first, trying to conceptualize a new beauty as an open fashion that can freely change with the creation of a dual beauty by combining analog and digital sensibility. Second is the external representation of human psychological change or emotional exchange, which helps to form a consensus by understanding and exchanging emotions of different people. Third, reorganization of apparel pursuing integrated value appeared. Clothing, as a connection body in which the human body and the mechanical environment are combined with each other, is reestablished as a product of variable body that can embody an integrated value that includes various characteristics and can be diversified appropriately in any circumstance.

Determination of Parameter Value in Constraint of Sparse Spectrum Fitting DOA Estimation Algorithm (희소성 스펙트럼 피팅 도래각 추정 알고리즘의 제한조건에 포함된 상수 결정법)

  • Cho, Yunseung;Paik, Ji-Woong;Lee, Joon-Ho
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.41 no.8
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    • pp.917-920
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    • 2016
  • SpSF algorithm is direction-of-arrival estimation algorithm based on sparse representation of incident signlas. Cost function to be optimized for DOA estimation is multi-dimensional nonlinear function, which is hard to handle for optimization. After some manipulation, the problem can be cast into convex optimiztion problem. Convex optimization problem tuns out to be constrained optimization problem, where the parameter in the constraint has to be determined. The solution of the convex optimization problem is dependent on the specific parameter value in the constraint. In this paper, we propose a rule-of-thumb for determining the parameter value in the constraint. Based on the fact that the noise in the array elements is complex Gaussian distributed with zero mean, the average of the Frobenius norm of the matrix in the constraint can be rigorously derived. The parameter in the constrint is set to be two times the average of the Frobenius norm of the matrix in the constraint. It is shown that the SpSF algorithm actually works with the parameter value set by the method proposed in this paper.

Fuzzy Membership Functions and AHP-Based Negotiation Support in Electronic Commerce (퍼지 멤버십 함수와 AHP 추론기법을 이용한 전자상거래 협상지원)

  • Kim, Jin-Sung
    • Journal of the Korean Institute of Intelligent Systems
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    • v.12 no.4
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    • pp.347-352
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    • 2002
  • This paper propose the Fuzzy AHP(Analytic Hierarchical Process)-based negotiation support (FAHP-NEGO) mechanism to support the dynamic negotiation process in Electronic Commerce(EC). Negotiation is a form of decision-making with two or more actively involved agents who can not make decisions independently, and therefore must make concessions to achieve a compromise. Having concerned that point, the theoretical framework of FAHP-NEGO mechanism is presented by means of fuzzy membership functions and AHP. This mechanism encompasses both qualitative and quantitative conditions, and the use of multiple negotiation procedures for solving the electronic negotiation problem, adjusting the fuzzy membership function, and restructuring the problem representation. A hypothetical example of a healthcare products purchase is given to illustrate the quality of the proposed mechanism. The results showed that the Fuzzy AHP-based negotiation support mechanism could reflect both qualitative and quantitative conditions in EC. The implications of the study for future directions of research on electronic negotiation support modeling and systems are presented.

Metaproteomics in Microbial Ecology (메타프로테오믹스의 미생물생태학적 응용)

  • Kim, Jong-Shik;Woo, Jung-Hee;Kim, Jun-Tae;Park, Nyun-Ho;Kim, Choong-Gon
    • Korean Journal of Microbiology
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    • v.46 no.1
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    • pp.1-8
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    • 2010
  • New technologies are providing unprecedented knowledge into microbial community structure and functions. Even though nucleic acid based approaches provide a lot of information, metaproteomics could provide a high-resolution representation of genotypic and phenotypic traits of distinct microbial communities. Analyzing the metagenome from different microbial ecosystems, metaproteomics has been applied to seawater, human guts, activated sludge, acid mine drainage biofilm, and soil. Although these studies employed different approaches, they elucidated that metaproteomics could provide a link among microbial community structure, function, physiology, interaction, ecology, and evolution. These approaches are reviewed here to help gain insights into the function of microbial community in ecosystems.

Finding a method of narrative storytelling in interactive cinema (인터랙티브 영화에서의 서술적인 이야기 전개의 구조에 관한 방법론에 관하여)

  • Cho, Jae-Joon
    • 한국HCI학회:학술대회논문집
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    • 2009.02a
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    • pp.1279-1286
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    • 2009
  • "Interactivity refers to the possibility of an audience actively participating in the control of an artwork or representation." Andy Cameron, Dissimulations Interaction can be described as a way or function that improves the participation of audiences/viewers to being immersed into the medium itself. Until now, however, in terms of interactive cinema, interaction has not shown a sufficient participation for audiences. Specifically, audiences/viewers described that the structure of storytelling has failed to satisfy their requirements, in order to participate in the structure of storytelling. The aim of the research itself, therefore, began to ask and wonder why audiences/viewers criticised the participation which audiences/viewers are able to control storytelling, in interactive cinema, could not satisfied them in order to control and follow a storyline of interaction. In general idea, in interactive cinema, the function which allows audiences/viewers to be immersed into the storylines, must allow the immediacies of interaction. Audiences/viewers must therefore be able to satisfy the general idea of interactive cinema through controlling the directions of every choice offered. They must also be able to be immersed in the interactive storylines. Which of the prime causes can be improved or re-considered, to satisfy the participation requirements of audiences/viewers? The intention of this research also began to investigate a suitable method of storytelling within a narrative structure of interactive medium (interactive cinema). Through questioning the matter (it will be described in a later chapter), this research will be focused on the relationship between narrative structured interaction and audiences/viewers, which is of prime importance in relation to interaction. To further the research, Pilot study (experiment with the basic interactive narrative structure) was offered in order to understand and maintain a suitable method of storytelling within a narrative structure of interactive cinema and it also was explored to understand how the aim of the research would be maintained for further qualitative research.

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Relation Based Bayesian Network for NBNN

  • Sun, Mingyang;Lee, YoonSeok;Yoon, Sung-eui
    • Journal of Computing Science and Engineering
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    • v.9 no.4
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    • pp.204-213
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    • 2015
  • Under the conditional independence assumption among local features, the Naive Bayes Nearest Neighbor (NBNN) classifier has been recently proposed and performs classification without any training or quantization phases. While the original NBNN shows high classification accuracy without adopting an explicit training phase, the conditional independence among local features is against the compositionality of objects indicating that different, but related parts of an object appear together. As a result, the assumption of the conditional independence weakens the accuracy of classification techniques based on NBNN. In this work, we look into this issue, and propose a novel Bayesian network for an NBNN based classification to consider the conditional dependence among features. To achieve our goal, we extract a high-level feature and its corresponding, multiple low-level features for each image patch. We then represent them based on a simple, two-level layered Bayesian network, and design its classification function considering our Bayesian network. To achieve low memory requirement and fast query-time performance, we further optimize our representation and classification function, named relation-based Bayesian network, by considering and representing the relationship between a high-level feature and its low-level features into a compact relation vector, whose dimensionality is the same as the number of low-level features, e.g., four elements in our tests. We have demonstrated the benefits of our method over the original NBNN and its recent improvement, and local NBNN in two different benchmarks. Our method shows improved accuracy, up to 27% against the tested methods. This high accuracy is mainly due to consideration of the conditional dependences between high-level and its corresponding low-level features.

Switch-Level Binary Decision Diagram(SLBDD) for Circuit Design Verification) (회로 설계 검증을 위한 스위치-레벨 이진 결정 다이어그램)

  • 김경기;이동은;김주호
    • Journal of the Korean Institute of Telematics and Electronics C
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    • v.36C no.5
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    • pp.1-12
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    • 1999
  • A new algorithm of constructing binary decision diagram(BDD) for design verification of switch-level circuits is proposed in this paper. In the switch-level circuit, functions are characterized by serial and parallel connections of switches and the final logic values may have high-impedance and unstable states in addition to the logic values of 0 and 1. We extend the BDD to represent functions of switch-level circuits as acyclic graphs so called switch-level binary decision diagram (SLBDD). The function representation of the graph is in the worst case, exponential to the number of inputs. Thus, the ordering of decision variables plays a major role in graph sizes. Under the existence of pass-transistors and domino-logic of precharging circuitry, we also propose an input ordering algorithm for the efficiency in graph sizes. We conducted several experiments on various benchmark circuits and the results show that our algorithm is efficient enough to apply to functional simulation, power estimation, and fault-simulation of switch-level design.

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Parameter Identification of Nonlinear Dynamic Systems using Frequency Domain Volterra model (비선형 동적 시스템의 파라미터 산정을 위한 주파수 영역 볼테라 모델의 이용)

  • Paik, In-Yeol;Kwon, Jang-Sub
    • Journal of the Earthquake Engineering Society of Korea
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    • v.9 no.3 s.43
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    • pp.33-42
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    • 2005
  • Frequency domain Volterra model is applied to nonlinear parameter identification procedure for dynamic systems modeled by nonlinear function. The frequency domain Volterra kernels, which correspond io linear, quadratic, and cubic transfer functions in lime domain, are incorporated in nonlinear parametric identification procedure. The nonlinear transfer functions, which can be derived from the Volterra series representation of the nonlinear differential equation of the system by Schetzen's method(1980), are directly used for modeling input output relation. The error is defined by the difference between the observed output and the estimated output which is calculated by substituting the observed input to nonlinear frequency domain model. The system parameters are searched by minimizing the error. Volterra model guarantees enough accuracy and convergence and the estimated coefficients have a good agreement with their actual values not only in the linear frequency region but also in the legion where the $2^{nd}\;or\;3^{rd}$ order nonlinearity is dominant.

Radiation Characteristics of Microstrip Antenna on the Superstrate-Loaded Cylindrical Bianisotropic Substrated (덮개층을 갖는 원통형 쌍이방성 기판 위의 마이크로스트립 안테나의 방사특성)

  • Yoon, Joong-Han;Lee, Sang-Mok;An, Gyoo-Chul;Kwak, Kyung-Sup
    • Journal of the Korean Institute of Telematics and Electronics D
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    • v.36D no.11
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    • pp.1-11
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    • 1999
  • In this paper, the effects of superstrate on the radiation patterns of dipole on cylindrical bianisotropic substrates were studied. Special constitutive relations are used to describe the bianisotropic properties of a material, such that the Green's function can be formulated. Electromagnetic fields and boundary conditions in spectral region were used to find Green's function of the spectral representation and electromagnetic fields in space region were derived through inverse Fourier transformations of fields in spectral region using asymptotic formula for far zone. Radiation characteristics of axial Hertzian dipole on superstrate loaded cylindrical bianisotropic substrates were obtained. The effects of bianisotropic superstrate on the radiation properties of the antennas including beam scanning, directivity enhancement, dark-region illumination, and on horizon radiation, are discussed.

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Hybrid Stress Analysis around a Circular Hole in a Tensile Plate by Use of Phase Shifting Photoelasticity (광탄성 위상이동법에 의한 인장시편 원형 구멍주위 하이브리드 응력해석)

  • Baek, Tae-Hyun;Lee, Choon-Tae;Yang, Min-Bok
    • Journal of the Korean Society for Nondestructive Testing
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    • v.27 no.1
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    • pp.15-22
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    • 2007
  • A hybrid experimental-numerical method is presented for determining the stresses around a circular hole in a finite-width, tensile loaded plate. Measured fringe orders along straight lines provided the input information on the external boundary of the hybrid element. In order to see the effects of varying stress field, different numbers of terms in a power-series representation of the complex type conformal mapping stress function were tested. For qualitative comparison, actual isochromatic fringes were compared with reconstructed theoretical fringes using stress-optic law. For quantitative comparison, relative errors and standard deviations with respective to relative errors were analyzed for all measured points by changing the number of terms of stress function. The hybrid results are highly comparable with those predicted by FEA. The results show that this approach is effective and promising because isochromatic data along the straight lines in photoelasticity can be conveniently measured by use of phase shifting photoelasticity.