Index Catalog // ScholarsArchive@OSU

Primary production dynamics in the North Pacific subtropical gyre

Creator:: Corno, Guido
Abstract:: The North Pacific subtropical gyre (NPSG), once considered to be a biological desert due to low primary production (PP) and its associated variability, has been found more productive and variable than previously thought. The environmental conditions controlling this relatively high PP variability are yet to be elucidated, despite important implications...
Resource Type:: Dissertation
Full Text:: support of NSF and NOAA. CONTRIBUTION OF AUTHORS Dr. David M. Karl was involved with the design

Tales from the trenches : the people, policies, and procedures of cultural resource management

Creator:: Wilson, Michele L.
Abstract:: Since the late 1970s, archaeology has grown into an industry whose practitioners work in both public and private sectors. As an industry, modern archeology is commonly known as Cultural Resources Management, or CRM. CRM emerged from a surplus of employment opportunities made available to archeologists after the passing of National...
Resource Type:: Masters Thesis
Full Text:: would like to thank the members of my committee, Dr. Barbara Roth, Dr. David Brauner, and Mr. Karl

Efficient Algorithms for Solving the Median Problem on Real Road Networks

Creator:: Ghanbartehrani, Saeed
Abstract:: Location theory is a well-established and active research area. The main objective in location theory is to find the best locations for facilities to meet supply and demand constraints and minimize total cost. The median problem (also known as the 1-median problem) is a special case in location analysis that...
Resource Type:: Dissertation
Full Text:: committee members Dr. David Kim, Dr. Kagan Tumer, and Dr. Karl Haapala, not only for their insightful

Residential water conservation and energy efficiency impacts through effective scheduling and opportunities for regional expansion : a case study of a gas tankless water heater with recirculation loop

Creator:: Johnson, Erica M.
Abstract:: This study focused on the potential water and energy savings from implementing a revised schedule of a recirculation pump connected to a condensing gas tankless water heater located in a study home in Portland, Oregon. The existing recirculation pump activation schedule was studied for its impact on the overall water...
Resource Type:: Masters Thesis
Full Text:: . David Bernell and Dr. Hector Andres Vergara Arteaga for their continued support as committee members

Hybrid flowshop scheduling with dual resources in a supply chain

Creator:: Mehravaran, Yasaman
Abstract:: This dissertation addresses a hybrid-flow shop scheduling problem with dual resource constraints in a supply chain. Most of the traditional scheduling problems deal with machine as the only resource. However, other resources such as labor is not only required for processing jobs but are often constrained. Considering the second resource...
Resource Type:: Dissertation
Full Text:: extends to my committee members Dr. Zhaohui Wu, Dr. David Porter, and Dr. Karl Haapala, for their

Materials and process design for powder injection molding of silicon nitride for the fabrication of engine components

Creator:: Lenz, Juergen H. (Juergen Herbert)
Abstract:: A new material system was developed for fabricating the combustion engine of an unmanned aerial vehicle. The material system consisted of a mixture of nanoscale and microscale particles of silicon nitride. Magnesia and yttria were used as sintering additives. The powders were mixed with a paraﬃn binder system. The binder-powder...
Resource Type:: Masters Thesis

Bi-criteria group scheduling with sequence-dependent setup time in a flow shop

Creator:: Lu, Dongchen
Abstract:: Cellular manufacturing, which is also referred to as group technology among researchers, has primarily been used as a means to increase productivity, efficiency and flexibility. Under group technology, similar jobs, which have similar shape, material, and processing operations are assigned to the same group. Moreover, dissimilar machines are assigned to...
Resource Type:: Masters Thesis
Full Text:: extends to my committee members Dr. David Porter, Dr. Karl Haapala and Dr. John Sessions. Thanks to

Manufacturing Process Design and Electrically-Assisted Embossing of a Microchannel Solar Receiver

Creator:: McNeff, Patrick S.
Abstract:: Manufacturing process design (MPD) represents a design-oriented approach to manufacturing engineering. In this dissertation, Haynes 230 (H230), a solid solution-strengthened Ni-based superalloy, was chosen to meet the material requirements of a microchannel solar receiver (MSR) needed to increase the efficiency and reduce the cost of solar thermal power generation. An...
Resource Type:: Dissertation

Automated decomposition of complex parts for manufacturing with advanced joining processes

Creator:: Massoni, Brandon R.
Abstract:: Recent advancements in joining operations and additive manufacturing now allow complex metal parts to be built up from raw materials, as opposed to being machined down from solid blocks. This not only opens up the design space, but also allows for much more efficient manufacturing. By decomposing a complex part...
Resource Type:: Dissertation
Full Text:: Prof. Karl Haapala, Prof. David Kim, Rothanak Chan, Harsha Malshe, Steven Lindberg, Ryan Allen, and

Dividing Complex Parts into Multiple Pieces for Advanced Joining and Additive Manufacturing

Creator:: Massoni, Brandon R.
Abstract:: Poor material utilization is inherent to conventional manufacturing processes, leading to high material waste and machining times. Additive manufacturing processes attempt to solve this issue by allowing production of near-net shapes, but the processes may be too expensive or infeasible. By leveraging both processes in a single part, the waste...
Resource Type:: Masters Thesis
Full Text:: of, Prof. Karl Haapala, Prof. David Kim, Harsha Malshe, Steven Lindberg, Ryan Allen, and Rothanak

ScholarsArchive@OSU

Primary production dynamics in the North Pacific subtropical gyre

Tales from the trenches : the people, policies, and procedures of cultural resource management

Efficient Algorithms for Solving the Median Problem on Real Road Networks

Residential water conservation and energy efficiency impacts through effective scheduling and opportunities for regional expansion : a case study of a gas tankless water heater with recirculation loop

Hybrid flowshop scheduling with dual resources in a supply chain

Materials and process design for powder injection molding of silicon nitride for the fabrication of engine components

Bi-criteria group scheduling with sequence-dependent setup time in a flow shop

Manufacturing Process Design and Electrically-Assisted Embossing of a Microchannel Solar Receiver

Automated decomposition of complex parts for manufacturing with advanced joining processes

Dividing Complex Parts into Multiple Pieces for Advanced Joining and Additive Manufacturing

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