• Title/Summary/Keyword: stage process

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A Study on the Process Capability Model of Knowledge Management (지식경영 프로세스 능력 모델 개발 연구)

  • Kim, Hyun-Soo
    • Asia pacific journal of information systems
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    • v.11 no.3
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    • pp.23-42
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    • 2001
  • Recently, knowledge management becomes a core management tool for efficient and effective organizations. However, there are little known researches on measuring knowledge management level. The objective of this paper is to develop a process capability model for knowledge management of an organization. We developed 5 stage process capability model for knowledge management. The 1st stage is the initial stage where no significant knowledge management activity is performed. The 2nd stage is the performed stage where planning and tracking activities are performed on organization level. The 3rd stage is the established, and the 4th stage is the predictable stage where processes and results of knowledge management can be predictable. Final stage is the optimizing stage where knowledge management process is continuously improved at an organizational level. We surveyed 37 korean companies to test the validity of the proposed stage model. Statistical tests show that the developed stage model of knowledge management is valid and sound in general conditions. The result of this study on process capability model can be a solid stepping stone for future works in this area.

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A Study on Application of CPLM using Process Model of the Pre-design stage (건축 기획단계 프로세스 모델의 CPLM 적용에 관한 연구)

  • Park, Do-Young;Jun, Yeong-Jin;Moon, Sung-Kon;Kim, Ju-Hyung;Kim, Jae-Jun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2009.11a
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    • pp.205-208
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    • 2009
  • The purpose of this study is to apply the process model of the pre-design stage to CPLM(Construction Project Life-cycle Management). Life-cycle consists of 4 stage; Pre-design, Design, Construction, Maintenance. Each stage has organic relations between front and rear stage. Therefore it is important to manage and use the information data of each stage. But these data are not carried to the next stage smoothly, especially at the pre-design stage. It is even vague to define the process of the pre-design stage. To carry and share the information well, this study defines Pre-design stage process and CPLM at first, VA-Cityplanner which is the development system of the pre-design process model is applied to CPLM for the smooth current of the data between participants.

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Multi-Stage forming Process Applied to Warm Drawing of Magnesium Alloy AZ31 Sheet (마그네슘 합금 AZ31 판재의 온간 드로잉에서의 다단 성형 공정 적용)

  • Kim, H.K.;Kim, G.D.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2007.10a
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    • pp.242-245
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    • 2007
  • In the present investigation, the multi-stage warm drawing process was applied to the magnesium alloy AZ31 sheet to examine the feasibility of multi-stage forming process as a high formability product making process. For that purpose, a multi-stage drawing die system with heating module was developed, and the AZ31 sheets of different sizes were consecutively drawn by the multi-stage drawing die. The obtained drawn cups of AZ31 showed that the multi-stage drawing provided the better formability than the single stage drawing in terms of drawing depth without cup defects such as wrinkles or fractures. The sheet formability improvement by using the multi-stage drawing die system against the single stage was also analyzed in terms of the finite element analysis of material state variables evolution.

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Design Process for Stage Costume of the Theatre 'White Neutral Nation(Original: Andorra)' (연극 '하얀중립국(원제:안도라)'의 무대의상 전개과정)

  • Cho, Woo-Hyun;Cho, Hyun-Jin;Park, Min-Jae
    • Journal of the Korea Fashion and Costume Design Association
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    • v.15 no.4
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    • pp.1-15
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    • 2013
  • The stage costume in theater, along with the stage art, is the element that has the biggest visual effect in helping the audience to understand the theater. Nevertheless, in the domestic theater production system, compared with the other public performance products, the stage costume has been rented or purchased due to the lack understanding of the importance of the stage costume and budget problem, and thus the role of the stage costume has been undervalued. Such a phenomenon is more noticeable in the small scale theater. However, in this play White Neutral Nation (Original: Andorra), the production team and the directing team recognized the importance of the costume in the early stage of production, and accordingly lots of efforts, such as staff meetings and budget allocation, were made for the stage costume. As a result, the entire production process of the stage costume could be examined. Recently, performance culture in Korea has made rapid progress and diverse forms of public performances are created and planned. Accordingly, the level of audience has been rising and the interest in the stage costume is also rising. So, it can be said that not only the stage costume but also the production system that makes it are important. This research examined the production process of the stage costume only of the play White Neutral Nation but it is considered necessary to make researches on the production process of the stage costume used for the theater of different themes and public performances of different kinds and to systematize their production process of the stage costume.

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Multi-stage Finite Element Inverse Analysis of Elliptic Cup Drawing Processes with the Large Aspect Ratio (세장비가 큰 타원형 컵 성형 공정의 다단계 유한요소 역해석)

  • Kim, S.H.;Kim, S.H.;Huh, H.
    • Transactions of Materials Processing
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    • v.9 no.3
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    • pp.304-312
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    • 2000
  • An inverse finite element approach is employed to efficiently design the optimum blank shape and intermediate shapes from the desired final shape in multi-stage elliptic cup drawing processes. The multi-stage deep-drawing process is difficult to design with the conventional finite element analysis since the process is very complicate with the conventional finite element analysis since the process is very complicated with intermediate shapes and the numerical analysis undergoes the convergence problem even with tremendous computing time. The elliptic cup drawing process needs much effort to design sine it requires full three-dimensional analysis. The inverse analysis is able to omit all complicated and tedious analysis procedures for the optimum process design. In this paper, the finite element inverse analysis provides the thickness strain distribution of each intermediate shape through the multi-stage analysis. The multi-stage analysis deals with the convergence among intermediate shapes and the corresponding sliding constraint surfaces that are described by the analytic function of merged-arc type surfaces.

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Improvement of Turbidity Removal using the Two Stage Electroflotation-rising Process (2단계 전기부상-상승 공정을 이용한 탁도 제거 향상)

  • Kim, Dong-Seog;Park, Young-Seek
    • Journal of Environmental Science International
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    • v.29 no.9
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    • pp.907-914
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    • 2020
  • In this study, the two-stage electroflotation-rising process was investigated with the aim of improving the performance of the conventional one-stage electroflotation process. A total of 32 min (the electroflotation and rising times were 30 min and 2 min, respectively,) was required when a current of 0.35 A was applied in the one-stage electroflotation-rising experiment. The amount of electric power required to treat 1 ㎥ of water was 1.75 kWh/㎥. For the two- stage system, the time required to achieve a turbidity removal rate of over 95% was 16 min (50% of the one-stage system). The amount of electric power required to treat 1 ㎥ of water was 0.59 kWh/㎥, which was only 33.7% of that required for the one-stage process. The total treatment time and electric power were excellent in case of the two-stage system in comparison with those of the one-stage process. The rate of turbidity removal for the horizontal electrode arrangement is 9.3% higher than that of vertical electrode arrangement. When Na2SO4 was used as the electrolyte, the optimum electrolyte concentration was 1.0 g/L.

Process Map for Improving the Dimensional Accuracy in the Multi-Stage Drawing Process of Rectangular Bar with Various Aspect Ratio (다양한 종횡비의 직사각바 다단 인발공정에서 치수정도 향상을 위한 프로세스 맵)

  • Ko, P.S.;Kim, J.H.;Kim, B.M.
    • Transactions of Materials Processing
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    • v.27 no.3
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    • pp.154-159
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    • 2018
  • In the rectangular bar multi-stage drawing process, the cross-section dimensional accuracy of the rectangular bar varies depending on the aspect ratio and process conditions. It is very important to predict the dimensional error of the cross-section occurring in the multi-stage drawing process according to the aspect ratio of the rectangular bar and the half die angle of each pass. In this study, a process map for improving the dimensional accuracy according to the aspect ratio was derived in the drawing process of a rectangular bar. FE-simulation of the multi-stage shape drawing process was carried out with four types of rectangular bar. The results of the FE-simulation were trained to the nonlinear relationship between the shape parameters using an Artificial Neural Network (ANN), and the process maps were derived from them. The optimum half die angles were determined from the process maps on the dimensional accuracy. The validity of the suggested process map for aspect ratios 1.25~2:1 were verified through FE-simulation and experimentation.

Fabrication of Drawing Wire for Cold Rolling Mill using Tungsten Carbide Multi-Stage Dies (초경 다단 다이를 적용한 냉간 압조용 인발 선재 제조)

  • Park, D.H.;Hyun, K.H.;Lee, M.J.
    • Transactions of Materials Processing
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    • v.29 no.2
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    • pp.97-102
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    • 2020
  • Wire drawing is a metalworking process used to reduce the cross-section of a wire by pulling the wire through multi-stage drawing dies. The aim of this study is to fabricate a drawing wire using 2 stage drawing process. The finite element analysis of wire drawing was conducted to validate the efficiency of the designed process and the experiment was performed to validate the designed wire drawing process using 2 stage tungsten carbide die. Dry lubricant with powder was applied for producing a wire of desired diameter. Finally, a drawing wire using 2 stage die for cold rolling mill was developed.

Application of Normality Test and Classification of Process Capability Index (공정능력지수의 유형화 및 정규성 검정의 응용)

  • Choe, Seong-Un
    • Proceedings of the Safety Management and Science Conference
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    • 2011.11a
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    • pp.551-556
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    • 2011
  • This research presents an implementation strategy of Process Capability Index (PCI) according to the types of process characteristics. The types of process feature are classified as four perspectives of variation range, time period, error position, and process stage. The paper examines short-term or long-term PCI, within or between variation, position of precision or accuracy, and inclusion of measurement or calibration stage. Moreover, the study proposes normality test of unilateral PCI.

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Influence of Process Design Scheme on Product Qualities in Cylindrical Cup Drawing (원형컵 드로잉의 공정설계 변화가 제품품질에 미치는 영향)

  • 이재명;김종호;원시태
    • Transactions of Materials Processing
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    • v.11 no.8
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    • pp.716-723
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    • 2002
  • A systematic investigation for the process design in deep drawing is necessary to improve the quality of drawn cups. This study concentrates mainly on the influence of process desing scheme on the product qualities in cylindrical cup drawing. Three types of process design scheme were chosen in this study. Case 1 is to draw a finished cup of 50mm in diameter in one stage, Case 2 and Case 3 are redrawing the first drawn cups of 55, 65mm in diameter to the final size respectively. Through experiments the maximum drawing force in two-stage cup drawing can be reduced up to 24% as compared with that of one-stage cup drawing. In addition, Case 3 process results in better product qualities than the other two processes in terms of the distributions of thickness and hardness.