• Title/Summary/Keyword: Form-based

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A Comparative Analysis on the Characteristics of Rammed Earth Form System based on Selection Criteria (거푸집 선정기준에 의한 흙다짐용 거푸집 시스템의 특성 비교분석)

  • Lee, Jong Kook;Lee, Jung Je
    • KIEAE Journal
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    • v.7 no.6
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    • pp.91-97
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    • 2007
  • This research examines the characteristics of the "rammed earth form" based on the criteria for the selection of forms. For this purpose, the paper first reviews the characteristics and orientation of the earth-construction and looks into the outline, the prerequisite, the current status and the tendency of the rammed earth form system through previous studies. Consequently, we aims to contribute to the criteria for the selection of rammed earth forms in the future through a comparative analysis of the construction cost, quality, safety and easiness of works between the veneer board form and the euroform, which are most widely used at earth housing project in the domestic country. The results reveals that the euroform is better than the veneer board with 21% of total cost in the cost analysis. But this better than that in the side of easiness of construction. In both cases, the buckling of wall panel form and the labor-oriented characteristics of the methods are the future research issues in the rammed earth form system.

Hull Form Development for an AFRAMAX Tanker with a Composite Stern Frameline Concept

  • Kim, Ho-chung;Lee, Chun-ju;Kim, Su-hyung
    • Selected Papers of The Society of Naval Architects of Korea
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    • v.1 no.1
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    • pp.65-75
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    • 1993
  • Hull form development for an AFRAMAX tanker characterized by the form parameters of $C_B\simeq0.8$, $L/B\simeq5.5$, $B/T\simeq3.5$, han been carried out by the application of ‘Composite Stern Frameline Concept’. The viscous resistance of the new form was much smaller than that of the conventional form. Form factor of the new form was only 0.18 compared to 0.30 for the conventional hull form, Nevertheless the propulsive efficiency was slightly lower and thus the required propulsion power was smaller by 5~6% at both full load and ballast condition. In addition, it is confirmed that introduction of the form factor method such as ITTC’78 method is highly advisable because there is a great risk of the underperdicting full scale resistance of the hull form whose form the extrapolation of moel resistance to full scale is to be based on Froude method with the correlation allowances usually applied to conventional hull forms.

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Design of An Automated Contract Match-making System for VE Implementation (가상기업 구현을 위한 계약중개 자동화 시스템의 설계)

  • 정동길
    • The Journal of Society for e-Business Studies
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    • v.6 no.1
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    • pp.1-16
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    • 2001
  • This paper describes a preliminary investigation of contracts with a view towards automating the process of contract match-making. A novel approach based on exploiting Standard Form Contracts(SFC) is described. The approach is shown to be implementable with current technology. A second approach based on Standard Contract Clauses(SCC) which overcomes some of the limitations of Standard Form Contracts, is briefly outlined. The flexibility offered by this approach however, is accompanied by a considerable increase in the complexity of contract match-making. Both Standard Form Contracts and Standard Contract Clauses based match-making point towards an exciting area of future research.

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A Form Based Distribution Design Methodology for Distributed Databases (분산 테이타베이스를 위한 양식을 이용한 분산 설계 방법론)

  • Lee, Hui-Seok;Kim, Hui-Jin;Kim, Yeong-Sam
    • Asia pacific journal of information systems
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    • v.5 no.2
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    • pp.101-129
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    • 1995
  • This paper proposes a form-based distributed database design methodology ($FD^3$). The methodology consists of five design phases such as (i) form requirement analysis (ii) schema integration (iii) distribution analysis (iv) distribution design, and (v) local logical/physical design. In the $FD^3$, all the important design information for each phase is obtained by using an organizations forms, Users requirements are analyzed by using forms that contain logical and quantitative information for distribution design. $FD^3$ resolves naming conflicts by employing SQLs based on the form field data in the schema integration phase. Furthermore, $FD^3$ enhances the quality of distributed database design by incorporating communication costs into the design model. A real-life case is illustrated to demonstrate the usefulness of the $FD^3$.

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Practical Application of Neural Networks for Prediction of Ship's Performance Factors (선박의 성능 요소 추정을 위한 신경망의 실용화 연구)

  • Kim, Hyun-Cheol;Park, Hyoung-Gil
    • Journal of Ocean Engineering and Technology
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    • v.29 no.2
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    • pp.111-119
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    • 2015
  • In the initial ship design stage, performance predictions are generally carried out before and after the hull form design. The former is based on the main dimensions and power information, and the latter is based on the geometry of the hull form and propeller. This paper deals with the practical application of neural networks for the prediction of a ship's performance factors before and after the hull form design. For this, the hull form parameters that affect the performance are studied, and an optimal neural network structure based on the SSMB database is constructed. By comparing the results predicted by neural networks and the model test results, we confirmed that neural networks can be applied to practically evaluate the performance in the initial ship design stage.

An Experimental Study on The Development of Fold Concrete Permanent Form producible at Field (현장가공이 가능한 영구거푸집 개발에 관한 실험적 연구)

  • 김형남;최창기;김우재;김성식;정상진
    • Proceedings of the Korea Concrete Institute Conference
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    • 1999.10a
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    • pp.805-808
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    • 1999
  • According to the results of this research, Production of Fold Concret Permanent-Form, was found to be possible by Concrete. The FCP-Form (Fold Concret Permanent-Form) Concrete had Compress strength 300kg/$\textrm{cm}^2$ and banding strength 120kg/$\textrm{cm}^2$. FCP-Form Model was made by the result of the first research. There was no mimute-crack on beam form and The outer surface of form was very smooth, and Those qualities it were made possible hand-made by experiment. With these results, The Production of FCP-Form seemed possible. In the banding load test, P-S showed increase of maxim load 12% than P-R. At the first stage of minute crack, under continuing loading size of crack increased. These phenomena seemed to be based on contribution of stress of inner bars in FCP-Form. In the test of defection. P-S shower about 10% banding load increase than P-R. FCP-Form Concrete was found to be efficient in compressibleness, defection, safety and use of material.

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A local point interpolation method for stress analysis of two-dimensional solids

  • Liu, G.R.;Gu, Y.T.
    • Structural Engineering and Mechanics
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    • v.11 no.2
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    • pp.221-236
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    • 2001
  • A local point interpolation method (LPIM) is presented for the stress analysis of two-dimensional solids. A local weak form is developed using the weighted residual method locally in two-dimensional solids. The polynomial interpolation, which is based only on a group of arbitrarily distributed nodes, is used to obtain shape functions. The LPIM equations are derived, based on the local weak form and point interpolation. Since the shape functions possess the Kronecker delta function property, the essential boundary condition can be implemented with ease as in the conventional finite element method (FEM). The presented LPIM method is a truly meshless method, as it does not need any element or mesh for both field interpolation and background integration. The implementation procedure is as simple as strong form formulation methods. The LPIM has been coded in FORTRAN. The validity and efficiency of the present LPIM formulation are demonstrated through example problems. It is found that the present LPIM is very easy to implement, and very robust for obtaining displacements and stresses of desired accuracy in solids.

A Form-based Workflow Management System Using XML (XML을 이용한 폼 기반 워크플로우 관리 시스템)

  • 윤희진;배혜림;김영호;강석호
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2000.10a
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    • pp.219-222
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    • 2000
  • Systematic management of data related to business process, and information exchange within existing information systems or between different companies have recently become an important issue. This paper tries to solve such problems by using form based workflow system using XML(extensible Markup Language), a standard for digital document exchange. In this system, a new model that formalizes documents into XML form documents and manages them is developed. By defining and operating form documents by XML, information exchange within existing information systems such as ERP and SCM or between different companies, and interoperability between different WFMS can be easily achieved. In addition, by matching form, a formalized document, with existing database schema, WFMS can be directly applied to existing information system, thus enabling continuity of data management and business activity.

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Closed form solutions for element equilibrium and flexibility matrices of eight node rectangular plate bending element using integrated force method

  • Dhananjaya, H.R.;Pandey, P.C.;Nagabhushanam, J.;Othamon, Ismail
    • Structural Engineering and Mechanics
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    • v.40 no.1
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    • pp.121-148
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    • 2011
  • Closed form solutions for equilibrium and flexibility matrices of the Mindlin-Reissner theory based eight-node rectangular plate bending element (MRP8) using Integrated Force Method (IFM) are presented in this paper. Though these closed form solutions of equilibrium and flexibility matrices are applicable to plate bending problems with square/rectangular boundaries, they reduce the computational time significantly and give more exact solutions. Presented closed form solutions are validated by solving large number of standard square/rectangular plate bending benchmark problems for deflections and moments and the results are compared with those of similar displacement-based eight-node quadrilateral plate bending elements available in the literature. The results are also compared with the exact solutions.

Pseudo-linear IHS-based Coordinate System for Color Image Enhancement (칼라 영상의 향상을 위한 준 선형 IHS 기반 좌표계)

  • 김정엽;심재창;김순자;하영호
    • Journal of the Korean Institute of Telematics and Electronics B
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    • v.29B no.9
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    • pp.59-67
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    • 1992
  • Color image enhancement can be achieved easily by using linear form of coordinate system. But some popular color coordinate systems almost have nonlinear characteristics in the geometric form. In this paper, the proposed coordinate system has pseudo-linear form and based on IHS system which represents human color perception appropriately. And for the image intensity processing, an edge-preserving smoothing algorithm is presented.

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