• 한국패류학회지
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• 제24권2호
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• pp.93-96
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• 2008

The Korean freshwater Sphaeriid clam species, Pisidium(Neopisidium) coreanum is re-described and illustrated, based on the type locality specimens. Authors considers that original description of this species is by Kwon, Pisidium(Neopisidium) sp. in 1990.

• International Journal of Concrete Structures and Materials
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• 제10권1호
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• pp.99-112
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• 2016

During earthquake, reinforced concrete walls show complicated post-yield behavior varying with shear span-to-depth ratio, re-bar detail, and loading condition. In the present study, a macro-model for the nonlinear analysis of multi-story wall structures was developed. To conveniently describe the coupled flexure-compression and shear responses, a reinforced concrete wall was idealized with longitudinal and diagonal uniaxial elements. Simplified cyclic material models were used to describe the cyclic behavior of concrete and re-bars. For verification, the proposed method was applied to various existing test specimens of isolated and coupled walls. The results showed that the predictions agreed well with the test results including the load-carrying capacity, deformation capacity, and failure mode. Further the proposed model was applied to an existing wall structure tested on a shaking table. Three-dimensional nonlinear time history analyses using the proposed model were performed for the test specimen. The time history responses of the proposed method agreed with the test results including the lateral displacements and base shear.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2001년도 The Pacific Aisan Confrence On Intelligent Systems 2001
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• pp.385-392
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• 2001

This paper proposes a meta modeling technique which permits to describe a KBS according to three axis: the object of reuse axis, the levels of granularity axis and the reuse process axis. The object of reuse axis allows to see a KBS as a set of inter-related components for reuse purposes. The levels of granularity axis allows to describe the KBS components according to different levels of granularity for clarity and reuse purposes. The reuse process axis allows to see the KBS components as (re)usable components.

• 한국분말재료학회지
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• 제21권1호
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• pp.7-15
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• 2014

This study investigated the densification behavior of rhenium alloys including W-25 wt.%Re and Re-2W-1Ta (pure Re) during sintering. The dilatometry experiments were carried out to obtain the in-situ shrinkage in $H_2$ atmosphere. The measured data was analyzed through shrinkage, strain rate and relative density, and then symmetrically treated to construct the linearized form of master sintering curve (MSC) and MSC as a well-known and straightforward approach to describe the densification behavior during sintering. The densification behaviors for each material were analyzed in many respects including apparent activation energy, densification parameter, and densification ratio. MSC with a minimal set of preliminary experiments can make the densification behavior to be characterized and predicted as well as provide guideline to sinter cycle design. Considering the results of linearized form and MSC, it was confirmed that the W-25 wt.%Re compared to Pure Re is more easily densified at the relatively low temperature.

• 한국정보과학회논문지:소프트웨어및응용
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• 제29권9호
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• pp.619-630
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• 2002

1980년대 이후, 소프트웨어 위기에 대응하기 위한 다양한 소프트웨어 공학적 기법들이 출현하기 시작 하였고, 현재 소프트웨어의 질적 향상 및 생산성 향상을 꾀하기 위한 개발 지침으로 소프트웨어 컴포넌트 개발 프로세스를 구축하는데 관심이 집중되어지고 있다. 그러나 대부분의 방법론들이 앞으로 구축할 새로운 시스템의 재사용성 확보에 치중할 뿐, 실질적으로 기존 레거시 시스템의 자원을 재사용하여 새로운 시스템을 구축하는 방법은 효율적으로 지원하지 못하고 있는 실정이다. 본 논문에서는 레거시 시스템의 효율적 재사용을 위한 재공학 프로세스(Reengineering Process)로 RUP를 확장, 커스터마이징하여 구성한 RUP+re을 제시한다. RUP+re은 크게 역공학 워크플로우(Reverse Engineering Workflow), 재공학 워크플로우(Re-Engineering Workflow), 순공학 프로세스(Forward Engineering Process)로 구성되어진다. RUP+re의 각 워크플로우와 세부스텝을 제공하고 실사례 연구를 통하여 실질적으로 프로세스를 검증함으로서 레거시 시스템 자원의 재사용을 위한 소프트웨어 재공학 프로세스 구축에 효율적인 지침을 제공한다.

• Korea-Australia Rheology Journal
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• 제21권4호
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• pp.213-223
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• 2009

Taylor-Couette flow (i.e., flow between concentric, rotating cylinders) has long served as a paradigm for studies of hydrodynamic stability. For Newtonian fluids, the rich cascade of transitions from laminar, Couette flow to turbulent flow occurs through a set of well-characterized flow states (Taylor Vortex Flow, wavy Taylor vortices, modulated wavy vortices, etc.) that depend on the Reynolds numbers of both the inner and outer cylinders ($Re_i$ and $Re_o$). While extensive work has been done on (a) the effects of weak viscoelasticity on the first few transitions for $Re_o=0$ and (b) the effects of strong viscoelasticity in the limit of vanishing inertia ($Re_i$ and $Re_o$ both vanishing), the viscoelastic Taylor-Couette problem presents an enormous parameter space, much of which remains completely unexplored. Here we describe our recent experimental efforts to examine the effects of drag reducing polymers on the complete range of flow states observed in the Taylor-Couette problem. Of particular importance in the present work is 1) the rheological characterization of the test solutions via both shear and extensional (CaBER) rheometry, 2) the wide range of parameters examined, including $Re_i$, $Re_o$ and Elasticity number E1, and 3) the use of a consistent, conservative protocol for accessing flow states. We hope that by examining the stability changes for each flow state, we may gain insights into the importance of particular coherent structures in drag reduction, identify simple ways of screening new drag reducing additives, and improve our understanding of the mechanism of drag reduction.

• 영어영문학
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• 제55권2호
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• pp.241-257
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• 2009

The essay discusses the way in which the aesthetic of Pre-Raphaelites reformulates the habitual system of knowledge in the Victorian age by adapting $Ranci{\acute{e}}re^{\prime}s$ concept of aesthetics. $Ranci{\acute{e}}re$ develops an original theory of aesthetics, a regime of knowledge which enables to perceive and reflect art as such. In this way, aesthetics turns to be the logical system by which the consensus idea of the beautiful comes to exist. For $Ranci{\acute{e}}re$, aesthetics is an agreed system of the sensible and reproduces the habitual knowledge of the world. Therefore, a new aesthetic movement means an attempt to break the given aesthetics and reorients the new distribution of the sensible. The important point of $Ranci{\acute{e}}re^{\prime}s$ argument is that he does not presuppose the dimension beyond the present unlike Frankfurt School. What $Ranci{\acute{e}}re$ claims is that there is no such the aesthetic which can correct the instrumental reason, but rather an indifferent moment in which a worker finds out himself as a creator who can give rise to the new regime of the sensible and feels free from what he must work for. From this perspective, the essay explores the aesthetic of Pre-Raphaelites and its meaning in nineteenth century Britain. Pre-Raphaelites was an artist group who railed against a so-called academic style of paintings and created a new aesthetic criterion to describe the truth of the natural world. The essay examines the interrelationship between Pre-Raphaelites and photography that would enable them to re-distribute the sensible and produce a new way of seeing the order of things. This is related to the birth of a modern gaze as in the case of landscape paintings. What is crucial is that the distribution of the sensible is always-already doubled with the political. In short, Pre-Raphaeltes is not only an aesthetic movement but also a political pursuit to achieve a disenchanted perception of nineteenth century industrial capitalism.

• 정보처리학회논문지D
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• 제10D권5호
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• pp.845-858
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• 2003

1980년대 이후, 소프트웨어 위기에 대응하기 위한 다양한 소프트웨어 공학적 기법들이 출현하기 시작 하였고, 현재 소프트웨어의 질적 항상 및 생산성 향상을 꾀하기 위한 개발 지침으로 소프트웨어 개발 프로세스를 적용하는데 관심이 집중되어지고 있다. 그러나 대부분의 방법론들이 앞으로 구축한 새로운 시스템의 재사용성 확보에 치중할 뿐, 기존의 레거시 시스템 자원을 재사용하여 새로운 시스템을 구축하는 재공학 방법은 지원하지 못하고 있는 실정이다. 본 논문에서는 레거시 시스템의 효율적 진화를 위한 재공학 프로세스(Reengineering Process)로 RUP를 확장, 커스터마이징하여 구성한 RUP+re을 제시한다. RUP+re는 Small-h 모델을 바탕으로 크게 역공학 워크플로우(Reverse Engineering Workflow), 변환 워크플로우(Transformation Workflow), 진화 워크플로우(Evolution Workflow)로 구성되어진다. RUP+re의 각 워크플로우와 세부스텝을 제공하고 재공학 사례 연구론 통하여 실질적으로 프로세스를 검증함으로서 레거시 시스템 자원의 진화론 위한 소프트웨어 재공학 프로세스 구축에 효율적인 지침을 제공한다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.990-994
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• 2004

This paper presents a method to predict the transient characteristic of the air lubricated slider head in a hard disk drive by using optimization technique. The time dependent modified Reynolds equation based on the molecular slip flow approximation equations was used to describe the fluid flow within the air bearing and the implicit finite difference scheme is applied to calculate the pressure distribution under the slider head. The exhaustive search combined with the Broyden-Fletcher-Goldfarb-Shanno method were employed to obtain optimum design variables which are taper angle, rail width and taper length in order to keep the forces and moments acting on the slider head in dynamic equilibrium. The results show that the optimal head slider of the magnetic head has good stability characteristic that can reach the steady state within 0.5 microsecond.

• Journal of Computing Science and Engineering
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• 제7권3호
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• pp.159-167
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• 2013

Creativity is a long cherished and widely studied aspect of human behavior that allows us to re-invent the familiar, and to imagine the new. Computational creativity (CC) is a newly burgeoning area of creativity research that brings together academics and practitioners from diverse disciplines, genres and modalities, to explore the potential of computers to be autonomously creative, or to collaborate as co-creators with people. We describe here an architecture for creative Web services that will act as a force magnifier for CC, both for academic research, and for the effective deployment of real CC applications in industry. For researchers, this service-oriented architecture supports the pooling of technologies in a robust interoperable framework, in which CC models are conceived, developed and migrated from lab settings to an industrial strength platform. Industry developers, for their part, will be able to exploit novel results of CC research in a robust, low-risk form, without having to re-implement algorithms from a quickly moving field. We illustrate the architecture with the first of a growing set of creative Web services that provide robust figurative language processing on demand.