• Title/Summary/Keyword: s diagram

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Prediction of Mortality and Yield for Chamaecyparis obtusa Using Stand Density Management Diagram (임분밀도관리도를 이용한 편백림의 고사량 및 수확량 예측)

  • Park, Joon Hyung;Yoo, Byung Oh;Lee, Kwang Soo;Park, Yong Bae;Kim, Hyung-Ho;Jung, Su Young
    • Journal of Korean Society of Forest Science
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    • v.107 no.2
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    • pp.174-183
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    • 2018

  • This study aims to make the stand density management diagram which is useful for establishing stand density management system in Chamaecyparis obtusa forest. By using 216 sample plots to estimate Yield-Density relationship ($R^2=0.743$), the stand density management diagram was modeled by the estimated parameters. As a result of this diagram, after planting 3,000 trees per hectare the mortality rate of this unthinned C. obtusa stands over 80 years was estimated to be equal to $12.0{\sim}18.1trees{\cdot}ha^{-1}{\cdot}year^{-1}$, and stand volume was $463.1{\sim}695.4m^3{\cdot}ha^{-1}$, and stand density was $1,555{\sim}2,038trees{\cdot}ha^{-1}$. Developed stand density management diagram for C. obtusa is effective to establish the management criteria and production objective. Therefore, this study allowed us to make the optimal forest working plan.

  • https://doi.org/10.14578/jkfs.2018.107.2.174 인용 PDF KSCI

Requirements 분석을 위한 DFD Editor 및 Evaluator의 설계 및 구현

  • Han, Sang-Man;Park, Gyeong-Beom;Kim, Seong-Hui;Song, Yeong-Gi
    • ETRI Journal
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    • v.7 no.4
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    • pp.24-30
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    • 1985

  • Requirements 분석 tool은 시스팀의 개발 단계중 한 단계인 Requirements 분석의 자동화를 위한 것으로 입력된 Requirements의 정보를 데이터베이스에 수록하고 수록된 정보를 이용하여 데이터의 consistency 및 completeness를 조사 분석하는 도구이다. 본 논문은 이 Requirements 분석 tool의 설계상의 구성과 입력될 Requirements를 Data Flow Diagram(DFD)으로 구현하기 위한 editor와 evaluator에 관한 설계 및 구현에 대해 기술한다.

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