• 제목/요약/키워드: generalizations

검색결과 285건 처리시간 0.023초

병렬 다중 홉 필드 네트워크 구성으로 인한 2-차원적 얼굴인식 기법에 대한 새로운 제안 (Redundant Parallel Hopfield Network Configurations: A New Approach to the Two-Dimensional Face Recognitions)

  • 김영택
    • 정보처리학회논문지:소프트웨어 및 데이터공학
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    • 제7권2호
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    • pp.63-68
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    • 2018
  • 얼굴인식 분야의 관심은 다양한 신흥분야의 응용에 의해 증강되고 있다. 2-차원적인 인식 알고리즘의 필요성이 어떤 변화무쌍한 환경들, 예를 들어서, 얼굴의 방향이나 조명도, 안경의 유무, 혹은 웃음과 울음 같은 다양한 표정변화의 처리에 적합할 수 있게 고찰 되어 지고 있다. 형상 기억이나 일반화 과정, 유사성 인식, 오류수정 등에 장점을 가지고 있는 홉 필드 네트워크의 기능을 바탕으로 하여 본 연구에서는 새로운 방법의 병렬적인 다중 홉 필드 네트워크를 구성하여 변화에 강한 얼굴표정 인식의 실험을 2-차원 알고리즘으로 실시하였고 결과가 실제적인 얼굴 형상 환경 변화에서 강한 적응성을 가지고 있음을 확인하였다.

Identification Using Orthonormal Functions

  • Bae, Chul-Min;Wada, Kiyoshi;Imai, Jun
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1998년도 제13차 학술회의논문집
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    • pp.285-288
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    • 1998
  • A least-squares identification method is studied that estimates a finite number of coefficients in the series expansion of a transfer function, where the expansion is in terms of recently introduced generalized basis functions, We will expand and generalize the orthogonal functions as basis functions for dynamical system representations. To this end, use is made of balanced realizations as inner transfer functions. The orthogonal functions can be considered as generalizations of, for example, the pulse functions, Laguerre functions, and Kautz functions, and give rise to an alternative series expansion of rational transfer functions. We show that the Laplace transform of the expansion for some sets$\Psi_{\kappa}(Z)$ is equivalent to a series expansion . Techniques based on this result are presented for obtaining the coefficients $c_{n}$ as those of a series. One of their important properties is that, if chosen properly, they can substantially increase the speed of convergence of the series expansion. This leads to accurate approximate models with only a few coefficients to be estimated. The set of Kautz functions is discussed in detail and, using the power-series equivalence, the truncation error is obtained.

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기업의 사회적 책임과 내부 경영 활동 관계에 관한 연구 (A Study on the Relationship of Corporate Social Responsibility and Internal Corporate Management)

  • 한만용;강수진;성중안;최재웅
    • 디지털산업정보학회논문지
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    • 제9권4호
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    • pp.267-279
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    • 2013
  • To many, recent allegations of earnings management at Enron, coupled with similar ones at many other corporations, are a strong indication of a serious decay in business ethics. Nevertheless, the field of Corporate Social Responsibility(CSR) has grown exponentially in the last decade. This study investigates the effects of CSR on earnings management. Different to precedent works which focus on Financial Performance, this study attempts to provide empirical evidence for relevance of CSR and Discretionary Accruals(DA). The study used variables in the sustainability report, and DA for its earning management too progress empirical analysis because it is believed that the measurement of accounting transparency is highly related to the CEO's opportunistic selection of the accounting. In terms of Sustainable management activities, Employee training time(ETT) is significantly and negatively associated with Discretionary accruals(DA). And also Industrial Accidents Ratio(IAR) is significantly and negatively associated with Discretionary accruals. Consequently, empirical results suggest that Discretionary accruals associated with the company's CSR activities, such as ETT, and IAR. In this study, there are limitation of generalizations and omitted variable problem.

Fractional-Order Derivatives and Integrals: Introductory Overview and Recent Developments

  • Srivastava, Hari Mohan
    • Kyungpook Mathematical Journal
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    • 제60권1호
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    • pp.73-116
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    • 2020
  • The subject of fractional calculus (that is, the calculus of integrals and derivatives of any arbitrary real or complex order) has gained considerable popularity and importance during the past over four decades, due mainly to its demonstrated applications in numerous seemingly diverse and widespread fields of mathematical, physical, engineering and statistical sciences. Various operators of fractional-order derivatives as well as fractional-order integrals do indeed provide several potentially useful tools for solving differential and integral equations, and various other problems involving special functions of mathematical physics as well as their extensions and generalizations in one and more variables. The main object of this survey-cum-expository article is to present a brief elementary and introductory overview of the theory of the integral and derivative operators of fractional calculus and their applications especially in developing solutions of certain interesting families of ordinary and partial fractional "differintegral" equations. This general talk will be presented as simply as possible keeping the likelihood of non-specialist audience in mind.

The Effect of Customer and Competitor Market Sensing Capability on Business Performance of SMEs: An Empirical Study in Indonesia

  • NURHAYATI, Tatiek;HENDAR, Hendar
    • The Journal of Asian Finance, Economics and Business
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    • 제8권8호
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    • pp.601-612
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    • 2021
  • The purpose of this study is to investigate and examine the role of specialized marketing capabilities (SMC) in mediating the relationship between customer sensing capability (CuSC) and competitor sensing capability (CoSC) with business performance (BP) at SMEs retail fashion in Indonesia. This study used 330 SMEs from ten regencies in Indonesia and examined the regression relationship between the four variables, SMC, CuSC, CoSC, and BP. Confirmatory factor analysis (CFA) was used to measure the validity and reliability of the construct used. For data analysis techniques, this study used structural equation modeling (SEM) with AMOS Version 22.0. This study found that SMC acts as a partial mediator in the relationship between CuSC and CoSC with SMC and BP. By examining the diverse literature on market sensing capability, marketing strategy, and BP, this study offers a unique analysis of market learning and its effects on SMC and BP in Retail Fashion SMEs in Indonesia. Furthermore, future research needs to broaden the findings and improve generalizations by conducting studies of SMEs in other industries, such as manufacturing, and services of small, medium and large scale. In addition, it needs to add some countries as research objects, not only Indonesia.

EXTENSIONS OF MULTIPLE LAURICELLA AND HUMBERT'S CONFLUENT HYPERGEOMETRIC FUNCTIONS THROUGH A HIGHLY GENERALIZED POCHHAMMER SYMBOL AND THEIR RELATED PROPERTIES

  • Ritu Agarwal;Junesang Choi;Naveen Kumar;Rakesh K. Parmar
    • 대한수학회보
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    • 제60권3호
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    • pp.575-591
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    • 2023
  • Motivated by several generalizations of the Pochhammer symbol and their associated families of hypergeometric functions and hypergeometric polynomials, by choosing to use a very generalized Pochhammer symbol, we aim to introduce certain extensions of the generalized Lauricella function F(n)A and the Humbert's confluent hypergeometric function Ψ(n) of n variables with, as their respective particular cases, the second Appell hypergeometric function F2 and the generalized Humbert's confluent hypergeometric functions Ψ2 and investigate their several properties including, for example, various integral representations, finite summation formulas with an s-fold sum and integral representations involving the Laguerre polynomials, the incomplete gamma functions, and the Bessel and modified Bessel functions. Also, pertinent links between the major identities discussed in this article and different (existing or novel) findings are revealed.

ON GRADED N-IRREDUCIBLE IDEALS OF COMMUTATIVE GRADED RINGS

  • Anass Assarrar;Najib Mahdou
    • 대한수학회논문집
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    • 제38권4호
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    • pp.1001-1017
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    • 2023
  • Let R be a commutative graded ring with nonzero identity and n a positive integer. Our principal aim in this paper is to introduce and study the notions of graded n-irreducible and strongly graded n-irreducible ideals which are generalizations of n-irreducible and strongly n-irreducible ideals to the context of graded rings, respectively. A proper graded ideal I of R is called graded n-irreducible (respectively, strongly graded n-irreducible) if for each graded ideals I1, . . . , In+1 of R, I = I1 ∩ · · · ∩ In+1 (respectively, I1 ∩ · · · ∩ In+1 ⊆ I ) implies that there are n of the Ii 's whose intersection is I (respectively, whose intersection is in I). In order to give a graded study to this notions, we give the graded version of several other results, some of them are well known. Finally, as a special result, we give an example of a graded n-irreducible ideal which is not an n-irreducible ideal and an example of a graded ideal which is graded n-irreducible, but not graded (n - 1)-irreducible.

연구윤리 정착을 위한 정책방향에 관한 연구 (A Study on the Policy Direction for Establishing Research Ethics)

  • 김길수
    • 디지털융복합연구
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    • 제12권9호
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    • pp.35-45
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    • 2014
  • 2005년 말 황우석 사태는 연구윤리에 대해 자각할 수 있는 기회가 되었지만 연구윤리가 연구자나 연구공동체에 정착되었다고 할 수는 없다. 본 연구는 변화하는 연구 환경에 대응하여 연구윤리를 제고할 수 있는 방법을 탐구하기 위해 교육부장관 후보자에 대한 국회인사청문회에서 나타난 연구부정행위 사례를 분석하였다. 사례분석을 통해 연구윤리를 확보하기 위한 제도화가 미흡하고, 그동안 연구윤리 교육이 제대로 실시되지 않았으며, 연구실 문화가 경직되어 있다는 것을 파악할 수 있었다. 이를 토대로 본 연구는 책임 있는 연구를 장려하는 제도의 마련, 모든 연구자들을 대상으로 한 연구윤리교육의 실시, 연구실 문화의 개선 및 평가체계의 개선 등을 연구윤리 정착을 위한 방향으로 제시하였다. 본 연구가 단일 사례를 대상으로 연구를 진행했기 때문에 경험적 일반화에는 일정한 한계가 있다. 따라서 연구윤리에 대한 관심 제고와 더불어 계량적 연구를 통해 경험적 일반화에 이르는 연구를 기대한다.

고혈압-뜸 임상시험 참여자들의 혈압 관리행동에 대한 질적연구 (A Qualitative Study on Management Behaviors about Blood Pressure of Participants in Moxibustion Clinical Trial for Hypertension)

  • 문아지;김태정;이성근;김남권;이기상
    • 대한한방내과학회지
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    • 제33권4호
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    • pp.543-557
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    • 2012
  • Objectives : The purpose of this study which adopted a qualitative method was to evaluate blood pressure management behaviors of pre- and stage 1 hypertension patients and to provide fundamental data for developing a strategy about proper oriental medical treatment through analyzing factors related to a moxibustion clinical trial. Methods : Semi-structured interviews that focused on personal experiences with hypertension and its management were conducted with 10 hypertensive patients. The interviews lasted for approximately 50 minutes. Results : Most participants recognized that the direct cause of high blood pressure was unhealthy behavior rather than inheritance. Thus, the hypertensive patient believed they could recover their blood pressure to a normal level through removing the direct cause of hypertension instead of taking drugs. The reasons for these statements were that the drugs for controlling hypertension are not natural and they may have side effects. On future management plan of patients, most of them will continue to keep moxibustion and healthy behavior in the well-controlled blood pressure group. However in the uncontrolled blood pressure group, there was an increasing tendency to begin medication. Conclusions : For developing a strategy for an individual approach to hypertension management, we need to develop a client-centered attitude and strategy. That is, we need to tailor our approach to individual cases to avoid generalizations and stereotyping when developing an adherence increasing strategy.

K개의 집합에 연결이 있는 네트에 K(K-1)/2의 비용을 주는 경우의 네트워크의 다중 분할 (A Multiple-Way Partitioning of a Network When the Cost of the Net Which Connects K Subsets is K(K-1)/2)

  • 장우철;김인기;김경식
    • 전자공학회논문지B
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    • 제31B권11호
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    • pp.20-26
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    • 1994
  • 본 논문에서는 네트워크의 노드들을 여러 집합으로 분할할 때 서로 다른 k개의 집합 사이를 연결하는 네트에 대해 비용을 k(k-1)/2로 주는 경우, 즉 완전 그래프 형태의 비용을 주는 경우의 분할 알고리듬을 제시한다. 이 문제는 Sanchis의 다중 부날 문제$^{[5]}$중의 하나로서 분산처리 시스템의 자원 할당에 적용될 수 있다. 제시된 알고리듬은 Fiduccia, Mattheyses 알고리듬$^{[3]}$을 확장하여 일시에 다중 분할하는 기법을 사용하였으며 네트워크의 크기에 선형으로 비례하는 시간 복잡도와 공간 복잡도를 가진다. 제시된 알고리듬의 성능을 평가하기 위해 네트별로 노드들을 그룹화시키는 클러스터 성장 방식과 결과를 비교했다. 실험 결과 일시에 다중 분할하는 제시된 알고리듬이 우수한 결과를 내었다.

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