rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Tactical and strategic planning for rangeland resource use
    sub title: an optimal control approach
  name:
    name part: Chamberlain, Peter Joseph
    name part: 1960-
    role:
      role term: creator
  name:
    name part: Bessler, David A.
    role:
      role term: degree committee member.
  name:
    name part: Conner, J. Richard
    role:
      role term: degree supervisor.
  name:
    name part: Hocking, Ron R.
    role:
      role term: degree committee member.
  name:
    name part: Rister, M. Edward
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses
  origin info:
    place:
      place term: xx
    date issued: 1986
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: ix, 84 leaves : illustrations ; 29 cm
  abstract: This inquiry addresses the need for a grazing optimization framework to include nonstationary effects of grazing due to over or under utilization (with respect to a steady state stocking rate of 9 acres./amu). The mechanism is based upon a continuous-time control approach whose (differential) equation of motion reflects both natural and induced changes in forage level with respect to time. The methodology provides an interface between tactical and strategic decisions regarding stocking rate. The study area is the Texas Experimental Ranch at Throckmorton, located in the eastern half of the Texas Rolling Plains. The entire set of biological factors is range cite-specific to that region. The objective function is the (statistical) expectation with respect to forage level of the integral of net returns to land, management, and capital through time, where initial time is 0 and final time is 10 years. Evaluation for solution occurs daily. The stocking rate path (control variable) that maximizes the objective function is selected. The state is actually a random variable-forage level. It is shown that forage level through time is well described as a Wiener process. A terminal constraint on forage level is introduced which then requires the interchange of order of integration and using the expected forage level everywhere instead of forage level. Furthermore forage demand and a nonlinear time continuous cow-calf-cottonseed meal price system was estimated. Several runs were made with alternative shifts and combinations of shifts in output price level (cow and calf), feed price level, interest rate and terminal level of forage. The objective function was sensitive to output prices, input prices, and interest rate. The optimal stocking rate path however was not as sensitive. Unless output prices became very high and/or input prices became extremely low, the optimal stocking rate path remained at 11 acres./amu. At this level, there was some feeding since the ratio of forage supp…
  note: "Major subject: Agricultural Economics."
  note: Typescript (photocopy).
  note: Vita.
  note: Ph. D. Texas A & M University 1986
  note: Includes bibliographical references (leaves 74-77).
  subject:
    geographic code: n-us-tx
  subject:
    topic: Control theory
  subject:
    topic: Mathematical optimization
  subject:
    topic: Range management
    geographic: Texas
  subject:
    topic: Rangelands
    geographic: Texas
  subject:
    topic: Major agricultural economics
  subject:
    topic: Range management
  subject:
    topic: Rangelands
  subject:
    geographic: Texas
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-22837
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-22837
  record info:
    record content source: TXA
    record creation date: 880527
    record change date: 20220104090808.0
    record identifier: in00000016453
    language of cataloging:
      language term: eng