• Title/Summary/Keyword: 'Form'

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Numerical Representation of the Hull Form using NURBS Curve (NURBS 곡선을 이용한 선형의 수치적 표현)

  • Hyun-Cheol Kim;Soo-Young Kim
    • Journal of the Society of Naval Architects of Korea
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    • v.32 no.1
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    • pp.1-8
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    • 1995
  • This paper presents possibilities of a numerical hull form representation in the form of curve designs, which require a variety of form variations. The numerical representation method of the hull form is developed using NURBS curve with sufficient continuity and local variation.

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Cannonical Form of Acrobat Robot and Its Control of Swing-up (아크로뱃 로봇의 정준형과 도립제어)

  • 남택근;소명옥;박진길
    • Journal of Advanced Marine Engineering and Technology
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    • v.26 no.4
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    • pp.432-438
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    • 2002
  • In this paper, we described a technique for the swing-up control of a 2 link acrobat robot using a cannonical form which is derived form the law of conservation of an angular momentum based on the center of the first joint. The wide usefulness of the canonical form of the acrobat robot, which was suggested here, is could also be applied to control a free flying robot or an underactuated planar manipulator with no gravity term. Some simulation results are provided to verify the effectiveness of the proposed algorithm

A Form-finding of Planar Tensegrity Structures

  • Lee, Sang Jin
    • Architectural research
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    • v.14 no.4
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    • pp.143-152
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    • 2012
  • A form-finding procedure is presented for planar tensegrity structures. Notably, a simple decision criteria is proposed to select the desirable candidate position vector from the unitary matrix produced by the eigenvalue decomposition of force density matrix. The soundness of the candidate position vector guarantees faster convergence and produces a desirable form of tensegrity without any member having zero-length. Several numerical examples are provided to demonstrate the capability of the proposed form-finding process.

A Study on the Applicability of Multipurpose Functional Synthetic Resin Formworks (다목적 기능 합성수지 거푸집 현장 적용성에 관한 연구)

  • Kim, Tae-Hui;Ahn, Sung-Jin;Lee, Young-Do;Choi, Suk;Nam, Kyung-Yong
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.11a
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    • pp.143-144
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    • 2018
  • This study the workability of synthetic resin form was examined through field application. results there was no warping or bulging of the mold during concrete placement in the field application. Also, the concrete surface finish of synthetic resin form was better than that of euro-form.

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The Effects on Character Form of Hangul Readability (글자꼴이 가독성에 미치는 영향)

  • 이진호;이병근
    • Proceedings of the ESK Conference
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    • 1996.04a
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    • pp.186-190
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    • 1996
  • This study investigated the effect of character form on Readability of Hangul characters and words in horizonatal printing. The results were as follows. In canceling tests, (1) the speeds of charcter canceling were faster in the order of elongated from, condensed form and original form conditions, and (2) the speeds of word canceling were in the order of elongated, original and condensed form conditions. But in a reading task, The above indicates that Elongated from the best combination for horzontal Hangul printing.

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THE EXISTENCE OF SOLUTIONS OF LINEAR MULTIVARIABLE SYSTEMS IN DESCRIPTOR FROM FORM

  • AASARAAI, A.
    • Honam Mathematical Journal
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    • v.24 no.1
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    • pp.35-41
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    • 2002
  • The solutions of a homogeneous system in state space form $\dot{x}=Ax$ are to the form $x=e^{At}x_0$ and the solutions of an inhomogeneous system $\dot{x}=Ax(t)+f(t)$ are to the form $x=e^{At}x_0+{{\int}_0^t}\;e^{A(t-{\tau})}f({\tau})d{\tau}$. In this note we show that the solution of descriptor systems under some conditions exists, and is unique, moreover it is interesting to know the solutions of descriptor system are schematically like the solutions as in the state space form. Also we will give some algorithms to compute these solutions.

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Crystal form of SKP1080 (SKP1080의 결정형)

  • Sohn, Young-Taek;Lee, Kyoung-Ee
    • Journal of Pharmaceutical Investigation
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    • v.30 no.4
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    • pp.289-293
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    • 2000
  • Three polymorphic modifications and one amorphous form were prepared by recrystallization under various conditions and characterized by DSC and X-ray crystallography. At $37{\pm}0.5^{\circ}C$, the polymorphic modifications showed significant differences in the dissolution rate. The dissolution rate of Mod. 4, amorphous form, was faster than that of other polymorphic modifications. When all modifications were stored at 52% RH, 95% RH, and in silica gel desiccator, amorphous form was transformed at 95% humidity condition.

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Sample Size Determination and Evaluation of Form Errors

  • Chang, Sung Ho;Kim, Sunn Ho
    • Journal of Korean Society for Quality Management
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    • v.22 no.3
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    • pp.85-98
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    • 1994
  • In current coordinate measuring machine practice, there are no commonly accepted sample sizes for estimating form errors which have a statistical confidence. Practically, sample size planning is important for the geometrical tolerance inspection using a coordinate measuring machine. We determine and validate appropriate sample sizes for form error estimation. Also, we develop form error estimation methods with certain confidence levels based on the obtained sample sizes in various form errors: straightness, flatness, circularity, and cylindericity.

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SIMPLIFIED APPROACH TO VALUATION OF VULNERABLE EXCHANGE OPTION UNDER A REDUCED-FORM MODEL

  • Huh, Jeonggyu;Jeon, Jaegi;Kim, Geonwoo
    • East Asian mathematical journal
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    • v.37 no.1
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    • pp.79-85
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    • 2021
  • In this paper, we investigate the valuation of vulnerable exchange option that has credit risk of option issuer. The reduced-form model is used to model credit risk. We assume that credit event is determined by the jump of the counting process with stochastic intensity, which follows the mean reverting process. We propose a simple approach to derive the closed-form pricing formula of vulnerable exchange option under the reduced-form model and provide the pricing formula as the standard normal cumulative function.