• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Statistical Study on concentrateddistributions of fish stocks

Research Project

Project/Area Number 12680313
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Statistical science
Research InstitutionTokyo University of Fisheries

Principal Investigator

YAMADA Sakutaro  Tokyo University of Fisheries, Fisheries, Professor, 水産学部, 教授 (60017077)

Co-Investigator(Kenkyū-buntansha) KITAKADO Toshihide  Tokyo University of Fisheries, Fisheries, Assistant Professor, 水産学部, 助手 (40281000)
TANAKA Eiji  Tokyo University of Fisheries, Fisheries, Associate Professor, 水産学部, 助教授 (40217013)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2001: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2000: ¥500,000 (Direct Cost: ¥500,000)
Keywordsconcentrated distribution / sampling (especially, PAS) / Probability of oversight / 見落としの確率 / adaptiveサンプリング
Research Abstract

1. Comparative study of models of concentrated distributions
We studied relation among the mean m, probability of taking positive values s, and index of concentration θ for negative binomial distribution, Polya-Aeppli distribution and Neyman type A distribution. Main results are (1) s is a monotone decreasing function of θ for fixed m. (2) s is a monotone increasing concave function of m for fixed θ. (3) m is a monotone increasing convex function of θ for fixed s.
2. Study on Probability of oversight for PAS (Presence - Absence Sampling). Suppose that observation U=1 is gotten when there are animals (or eggs), U=0 otherwise. Actual number of animal (or egg) E is supposed to have negative binomial distribution NB (m,k). (1) P(E>01U=0)=1- (k/k+m)^k/1-a+a(k/k+mU)^k, where P(U=11E=x)=a(1-e^<-bx>, w=1-e^<-b>.
This probability is a monotone decreasing function of 1/k, (2) For N stations suppose that U=0 if y_1=--=y_n=0 for n stations, U=1 otherwise. For the number E of animals in the N stations we have P(E>01U=0)=1-(k/k+m)^<k(N-n)> (k+mp/k+m)^<kn>. This is a monotone decreasing function of 1/k.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] H.Zemtani, S.Yamada: "The relation between spawning area and bicmass of Japanese pilchard, Sardinops melancstictus, along the Pacific coast of Japan"Fishery Bulletin. 98. 842-848 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H. Zenitani and S. Yamada: "The relation between * area and biomass of Japanese pilchardo, Sardinops melanostictus, along the Pacific coast of Japan"fishery Bulletin. 98. 842-848 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.Zenitani, S.Yamada: "The relation between sparring area and biomass of Japanese pilchard, sardinops melanostictus, along the Pacific coast of Japan"Fishery Bulletin. 98・4. 842-848 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] H.Zenitani & S.yamada: "The relation between spawning area and biomass of Japanese pilchard, Sardinops melanostictus, along the Pacific coast of Japan"Fishery Bulletin. 98・4. 842-848 (2000)

    • Related Report
      2000 Annual Research Report

URL: 

Published: 2000-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi