Optimization Models for Sourcing and Distribution Systems

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Material Information

Title:
Optimization Models for Sourcing and Distribution Systems
Physical Description:
1 online resource (173 p.)
Language:
english
Creator:
Pérez Sigüenza, Cinthia C.
Publisher:
University of Florida
Place of Publication:
Gainesville, Fla.
Publication Date:

Thesis/Dissertation Information

Degree:
Doctorate ( Ph.D.)
Degree Grantor:
University of Florida
Degree Disciplines:
Industrial and Systems Engineering
Committee Chair:
GEUNES,JOSEPH PATRICK
Committee Co-Chair:
RICHARD,JEAN-PHILIPPE P
Committee Members:
GUAN,YONGPEI
PAUL,ANAND ABRAHAM

Subjects

Subjects / Keywords:
competition -- delivery-fee -- distribution-system -- dual-sourcing -- fee-schedule -- inventory
Industrial and Systems Engineering -- Dissertations, Academic -- UF
Genre:
Industrial and Systems Engineering thesis, Ph.D.
Electronic Thesis or Dissertation
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )

Notes

Abstract:
The first part of this dissertation examines the trade-offs involved in dual sourcing in a supply chain. Although splitting procurement orders may increase shipping costs as a result of diseconomies of scale, dual sourcing may offer certain benefits that can more than offset these costs. We consider a single-stage inventory replenishment model that includes two delivery modes: a cheaper, less reliable mode, and another, more expensive but perfectly reliable mode. The high-reliability mode is only utilized in replenishment intervals in which the less-reliable mode's lead time exceeds a certain value. This permits substituting the high-reliability mode for safety stock, to some degree. We characterize optimal replenishment decisions, and potential benefits of simultaneously using two delivery modes. In the second part of this dissertation we study the USDA food distribution programs administered by Florida Department of Agricultural and Consumer Services, where distributors are contracted to provide warehousing and delivery services for recipient agencies. To reduce the imbalance in the average expense per case for the agencies, and to ensure the attractiveness of the invitation to bid to potential contractors, we propose and evaluate different fee scenarios that result from the combination of different distribution system and fee schedule design parameters. As a result, we identify fee scenarios that reduce the imbalance in the agencies' expenses and guarantee a minimal increase for those agencies with higher expenses under the new fee structures. Finally, we consider a problem in which two carriers compete for the distribution services for a shipper who wishes to supply a set of retail points. The shipper uses a single-item auction for contracting the delivery services for each retail point. Each carrier places a bid for serving each of the delivery points, with the goal of maximizing the number of retail points assigned. We consider the carrier's problem of determining the bid prices it should submit to achieve this goal. Using three cost allocation mechanisms specified by the shipper, we evaluate the conditions under which the associated game has an equilibrium solution, and how the different cost parameters affect the model's results and the retail point allocation to carriers.
General Note:
In the series University of Florida Digital Collections.
General Note:
Includes vita.
Bibliography:
Includes bibliographical references.
Source of Description:
Description based on online resource; title from PDF title page.
Source of Description:
This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Thesis:
Thesis (Ph.D.)--University of Florida, 2014.
Local:
Adviser: GEUNES,JOSEPH PATRICK.
Local:
Co-adviser: RICHARD,JEAN-PHILIPPE P.
Electronic Access:
RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2015-05-31
Statement of Responsibility:
by Cinthia C. Pérez Sigüenza.

Record Information

Source Institution:
UFRGP
Rights Management:
Applicable rights reserved.
Embargo Date:
5/31/2015
Classification:
lcc - LD1780 2014
System ID:
UFE0046549:00001