You searched for +publisher:"Oregon State University" +contributor:("Kim, David").
Showing records 1 – 22 of
22 total matches.
No search limiters apply to these results.
Oregon State University
1.
Atichat, Tanawat.
A wireless sensor network approach for estimating individual task time.
Degree: MS, Industrial Engineering, 2011, Oregon State University
URL: http://hdl.handle.net/1957/22009 
► Most existing methods for generating individual task time estimates in production systems where jobs move through various manually operated workstations remain tedious and time consuming.…
(more)
▼ Most existing methods for generating individual task time estimates in production systems where jobs move through various manually operated workstations remain tedious and time consuming. For existing systems, average task times may vary considerably from prior estimates causing system inefficiencies, poor scheduling and poor planning decisions. Accurate and up-to-date estimates are also extremely valuable when planning and designing future assembly lines.
In this study, a wireless sensor network (WSN) based indoor positioning system (IPS) is proposed as a potential alternative for estimating individual task times. Several network design factors were varied in the experiments conducted to assess the ability of the WSN-based IPS to determine an operator’s position within the workstation so that the total production time can be allocated to the appropriate tasks. The main response variable utilized to determine the location of the operator within the workstation was the link quality indicator (LQI). Accurately measuring LQI levels is not a straightforward process since radio frequency (RF) signals can change over time depending on many conditions, including physical obstructions and electromagnetic interference (EMI).
The results show that a WSN-based IPS is a viable approach to estimating individual task times. Additionally, the analysis of the experimental data showed that certain WSN design factors need to be set carefully to ensure good quality in the estimation of individual task times.
Advisors/Committee Members: Porter, David (advisor), Kim, David (committee member).
Subjects/Keywords: Wireless network sensor
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Atichat, T. (2011). A wireless sensor network approach for estimating individual task time. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22009
Chicago Manual of Style (16th Edition):
Atichat, Tanawat. “A wireless sensor network approach for estimating individual task time.” 2011. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/22009.
MLA Handbook (7th Edition):
Atichat, Tanawat. “A wireless sensor network approach for estimating individual task time.” 2011. Web. 16 Apr 2021.
Vancouver:
Atichat T. A wireless sensor network approach for estimating individual task time. [Internet] [Masters thesis]. Oregon State University; 2011. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/22009.
Council of Science Editors:
Atichat T. A wireless sensor network approach for estimating individual task time. [Masters Thesis]. Oregon State University; 2011. Available from: http://hdl.handle.net/1957/22009
Oregon State University
2.
Kriett, Phillip Oliver.
Equipment replacement prioritization measures : simulation and testing for a vehicle fleet.
Degree: MS, Industrial Engineering, 2009, Oregon State University
URL: http://hdl.handle.net/1957/10843
► Oregon Department of Transportation (ODOT) Fleet Services manages a fleet that in 2008 included approximately 5,000 pieces of active equipment worth 340–390 million. Every biennium,…
(more)
▼ Oregon Department of Transportation (ODOT) Fleet Services manages a fleet that in 2008 included approximately 5,000 pieces of active equipment worth 340–390 million. Every biennium, a fixed budget is available to replace a certain amount of this equipment. This research evaluated various measures for establishing equipment replacement priorities.
A model was developed to simulate the operation of a single equipment class over time, including equipment replacement every two years. Five different equipment classes were simulated using ten measures for establishing replacement priorities. Historical data for these five different equipment classes (provided by ODOT) was used to define various simulation parameters. The effectiveness of each prioritization measure was evaluated using the cost per mile to operate the fleet over the simulated time period.
Advisors/Committee Members: Kim, David (advisor), Porter, David (committee member).
Subjects/Keywords: Simulation; Motor vehicle fleets – Management
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kriett, P. O. (2009). Equipment replacement prioritization measures : simulation and testing for a vehicle fleet. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/10843
Chicago Manual of Style (16th Edition):
Kriett, Phillip Oliver. “Equipment replacement prioritization measures : simulation and testing for a vehicle fleet.” 2009. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/10843.
MLA Handbook (7th Edition):
Kriett, Phillip Oliver. “Equipment replacement prioritization measures : simulation and testing for a vehicle fleet.” 2009. Web. 16 Apr 2021.
Vancouver:
Kriett PO. Equipment replacement prioritization measures : simulation and testing for a vehicle fleet. [Internet] [Masters thesis]. Oregon State University; 2009. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/10843.
Council of Science Editors:
Kriett PO. Equipment replacement prioritization measures : simulation and testing for a vehicle fleet. [Masters Thesis]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/10843
Oregon State University
3.
Mohseni, Seyed Alireza.
Optimal Experimental System Design.
Degree: PhD, 2017, Oregon State University
URL: http://hdl.handle.net/1957/61899
► Physical experimentation in various scientific and engineering areas continues to be a useful and often necessary approach that is applied in research, development, and for…
(more)
▼ Physical experimentation in various scientific and engineering areas continues to be a useful and often necessary approach that is applied in research, development, and for general problem solving. The experimental design process however, is iterative and often involves trial and error. Alternative designs are proposed and evaluated on cost and time requirements. They are also evaluated with respect to various statistical criteria such as statistical power for detecting effects if they exist. Selected experimental design alternatives then continue the design process and undergo additional modifications until the objectives of the experiment appear to be met, or are met as closely as time and cost constraints permit. The objective of this research is to develop a methodology for “Optimal Experimental System Design” where cost and time are integrated with experimental design selection so that optimal cost and time feasible experimental designs can be explored computationally.
Advisors/Committee Members: Kim, David (advisor), Vergara, Hector (committee member).
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mohseni, S. A. (2017). Optimal Experimental System Design. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/61899
Chicago Manual of Style (16th Edition):
Mohseni, Seyed Alireza. “Optimal Experimental System Design.” 2017. Doctoral Dissertation, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/61899.
MLA Handbook (7th Edition):
Mohseni, Seyed Alireza. “Optimal Experimental System Design.” 2017. Web. 16 Apr 2021.
Vancouver:
Mohseni SA. Optimal Experimental System Design. [Internet] [Doctoral dissertation]. Oregon State University; 2017. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/61899.
Council of Science Editors:
Mohseni SA. Optimal Experimental System Design. [Doctoral Dissertation]. Oregon State University; 2017. Available from: http://hdl.handle.net/1957/61899
Oregon State University
4.
Ghanbartehrani, Saeed.
Efficient Algorithms for Solving the Median Problem on Real Road Networks.
Degree: PhD, Industrial Engineering, 2015, Oregon State University
URL: http://hdl.handle.net/1957/57948
► 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…
(more)
▼ 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 aims at locating a facility such that the sum of demand weighted distances to a set of demand points is minimized.
This research is composed of three main parts. In the first part, two algorithms for obtaining optimal solutions to the median problem on real road network graphs are proposed. The first algorithm known as the multi-threaded Dijkstra’s (MTD) algorithm, is inspired by the bidirectional Dijkstra's algorithm. The second algorithm is based on exhaustive graph search (EGS) and uses Dijkstra's shortest path algorithm to exhaustively calculate the distance from every demand point to all nodes in the graph. The proposed algorithms are used to evaluate several facility location scenarios that vary with respect to the size of the study area and the number of demand points on that network. The results show that both algorithms are capable of obtaining optimal solutions and that their performance is influenced by factors such as the number of demand points and the size of the area in which the demand points are located.
In the second part of this research, an improved variant of the MTD algorithm known as the MTD-i algorithm is presented. The MTD-i algorithm preforms less search than the MTD algorithm to find an optimal solution. An experiment is conducted to compare the performance of the MTD-i algorithm to that of the MTD and EGS algorithms in terms of the average percentage of nodes explored and the average run time. The results show that the MTD-i algorithm always outperforms both the MTD and EGS algorithms in terms of the percentage of nodes explored in all scenarios tested. However, the average run time of the algorithms is heavily influenced by the experimental factors.
In the last part of this research, a methodology that applies the MTD algorithm to locate public transit stops on real road network is presented. The proposed methodology finds the optimal location for transit stops so that the total weighted walking distance from the internal point of census blocks to the transit stops is minimized.
Advisors/Committee Members: Porter, David (advisor), Kim, David (committee member).
Subjects/Keywords: Facility Location; Local transit – Mathematical models
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ghanbartehrani, S. (2015). Efficient Algorithms for Solving the Median Problem on Real Road Networks. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/57948
Chicago Manual of Style (16th Edition):
Ghanbartehrani, Saeed. “Efficient Algorithms for Solving the Median Problem on Real Road Networks.” 2015. Doctoral Dissertation, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/57948.
MLA Handbook (7th Edition):
Ghanbartehrani, Saeed. “Efficient Algorithms for Solving the Median Problem on Real Road Networks.” 2015. Web. 16 Apr 2021.
Vancouver:
Ghanbartehrani S. Efficient Algorithms for Solving the Median Problem on Real Road Networks. [Internet] [Doctoral dissertation]. Oregon State University; 2015. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/57948.
Council of Science Editors:
Ghanbartehrani S. Efficient Algorithms for Solving the Median Problem on Real Road Networks. [Doctoral Dissertation]. Oregon State University; 2015. Available from: http://hdl.handle.net/1957/57948
Oregon State University
5.
Park, SeJoon.
Container fleet-sizing for part transportation and storage in the supply chain.
Degree: PhD, Industrial Engineering, 2011, Oregon State University
URL: http://hdl.handle.net/1957/28101
► This research addresses fleet-sizing for reusable containers that are used for protection, transportation, and storage of parts between a component plant and assembly plant. These…
(more)
▼ This research addresses fleet-sizing for reusable containers that are used for
protection, transportation, and storage of parts between a component plant and
assembly plant. These reusable containers are often expensive and occupy a
large amount of storage space when empty and full. Having a large container
fleet comes with higher acquisition, maintenance, and storage costs, but
decreases production down time caused by the lack of containers needed for
storage. A quantitative model of these trade-offs will permit decision makers to
maintain desired production levels at minimum cost. In this dissertation, the
relationship between container fleet size and production down time caused by
container shortages is researched. Utilizing both theoretical and empirical
approaches, two analytical models that include relevant operational parameters
and stochastic components are developed. The first is a container fleet sizing
model, and the second model estimates production stoppages as a function of
container fleet size.
The formulas are shown to be accurate and provide decision makers with the
tools to better plan and manage specific applications. The formulas also
provide general insight into the factors that affect container fleet size and
production stoppage due to container shortages.
Advisors/Committee Members: Kim, David S. (advisor), Porter, David (committee member).
Subjects/Keywords: Container fleet size; Shipment of goods – Mathematical models
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Park, S. (2011). Container fleet-sizing for part transportation and storage in the supply chain. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/28101
Chicago Manual of Style (16th Edition):
Park, SeJoon. “Container fleet-sizing for part transportation and storage in the supply chain.” 2011. Doctoral Dissertation, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/28101.
MLA Handbook (7th Edition):
Park, SeJoon. “Container fleet-sizing for part transportation and storage in the supply chain.” 2011. Web. 16 Apr 2021.
Vancouver:
Park S. Container fleet-sizing for part transportation and storage in the supply chain. [Internet] [Doctoral dissertation]. Oregon State University; 2011. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/28101.
Council of Science Editors:
Park S. Container fleet-sizing for part transportation and storage in the supply chain. [Doctoral Dissertation]. Oregon State University; 2011. Available from: http://hdl.handle.net/1957/28101
Oregon State University
6.
Bathaee, Nadia.
Differentiating transportation modes using Bluetooth sensor data.
Degree: MS, Industrial Engineering, 2014, Oregon State University
URL: http://hdl.handle.net/1957/48433
► State departments of transportation, transportation consultants, and other transportation agencies are always in need of data that can be used to better understand how different…
(more)
▼ State departments of transportation, transportation consultants, and other transportation agencies are always in need of data that can be used to better understand how different modes of transportation use the road and highway systems. A variety of automatic data collection technologies have been used to gather these data including video cameras, inductive loop detectors, license plate recognition, as well as wireless-based technologies such as infrared. These technologies have different capabilities with respect to the amount of information that can be derived from the collected data. Regardless of the richness of the collected data, the majority of the available technologies focus on collecting vehicle-based data because they either do not have the capability to collect data from other travel modes (e.g., bicycles and pedestrians), or may need to be deployed differently to support this capability (e.g., video technology). One type of wireless-based data collection system that has been deployed recently is based on Bluetooth technology. A key feature of Bluetooth-based data collection systems that makes travel mode identification feasible is that the Bluetooth-enabled devices within vehicles are also present on bicyclists and pedestrians.
The main objective of this research was to explore the feasibility of utilizing the information contained in data collected by Bluetooth-based data collection units (DCU) to automatically identify three different modes of transportation (i.e., motor vehicles, bicyclists, and pedestrians) travelling through an intersection. To accomplish this objective, a methodology was developed that included three controlled data collection experiments and one uncontrolled data collection experiment where data were gathered from Bluetooth-enabled devices using several Bluetooth DCUs. The main performance metric utilized was the duration of travel which was calculated from the time-stamped MAC address data collected by the Bluetooth DCUs. The clustering methods k-Means, Fuzzy c-Means, and Partitioning Around Medoids were applied to the overall duration of travel data to distinguish vehicles, bicycles and pedestrians. The results obtained in this research prove that the Bluetooth-based data collection system can be a viable approach for distinguishing different modes of transportation travelling through intersections controlled by either a stop sign or traffic light.
Advisors/Committee Members: Porter, David J. (advisor), Kim, David S. (committee member).
Subjects/Keywords: Transportation; Bluetooth technology
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bathaee, N. (2014). Differentiating transportation modes using Bluetooth sensor data. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/48433
Chicago Manual of Style (16th Edition):
Bathaee, Nadia. “Differentiating transportation modes using Bluetooth sensor data.” 2014. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/48433.
MLA Handbook (7th Edition):
Bathaee, Nadia. “Differentiating transportation modes using Bluetooth sensor data.” 2014. Web. 16 Apr 2021.
Vancouver:
Bathaee N. Differentiating transportation modes using Bluetooth sensor data. [Internet] [Masters thesis]. Oregon State University; 2014. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/48433.
Council of Science Editors:
Bathaee N. Differentiating transportation modes using Bluetooth sensor data. [Masters Thesis]. Oregon State University; 2014. Available from: http://hdl.handle.net/1957/48433
Oregon State University
7.
Crews, Matthew.
A comparison of single runs versus multistart for simulated annealing and threshold accepting.
Degree: MS, Industrial Engineering, 2014, Oregon State University
URL: http://hdl.handle.net/1957/50660
► Simulated Annealing and Threshold Accepting are two stochastic search algorithms that have been successfully used on a variety of complex and difficult problem sets. Due…
(more)
▼ Simulated Annealing and Threshold Accepting are two stochastic search algorithms that have been successfully used on a variety of complex and difficult problem sets. Due to their stochastic nature they are not guaranteed to produce the same result for each run. This means that these techniques actually produce a distribution of solutions which are based on the input parameters and the problem instance. Most research in the area of Simulated Annealing and Threshold Accepting focuses on the single run performance of these algorithms and does not consider sampling multiple runs and taking the best result, known as multisampling. Previous work that has looked at multisampling did not explore a variety of settings or problem instances which has left gaps in the understanding of the multisampling performance of Simulated Annealing and Threshold Accepting.
This work examines the use of single runs and multisampling on four instances of the Traveling Salesman Problem. A systematic exploration is done of the variables which affect the performance of these two heuristics. A pairwise analysis is then performed to identify if there are cases where it is advantageous to employ a multistart method instead of a single run. The conclusion is that in a majority of cases a single run outperforms the multistart method but there are cases in which the multistart method outperforms single runs.
Advisors/Committee Members: Kim, David (advisor), Lu, Guanyi (committee member).
Subjects/Keywords: Simulated Annealing; Simulated annealing (Mathematics)
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Crews, M. (2014). A comparison of single runs versus multistart for simulated annealing and threshold accepting. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/50660
Chicago Manual of Style (16th Edition):
Crews, Matthew. “A comparison of single runs versus multistart for simulated annealing and threshold accepting.” 2014. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/50660.
MLA Handbook (7th Edition):
Crews, Matthew. “A comparison of single runs versus multistart for simulated annealing and threshold accepting.” 2014. Web. 16 Apr 2021.
Vancouver:
Crews M. A comparison of single runs versus multistart for simulated annealing and threshold accepting. [Internet] [Masters thesis]. Oregon State University; 2014. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/50660.
Council of Science Editors:
Crews M. A comparison of single runs versus multistart for simulated annealing and threshold accepting. [Masters Thesis]. Oregon State University; 2014. Available from: http://hdl.handle.net/1957/50660
Oregon State University
8.
Wagner, Tristan John.
Impact of asset usage preferences on parallel replacement decisions.
Degree: MS, Industrial Engineering, 2010, Oregon State University
URL: http://hdl.handle.net/1957/15928
► Data from a state department of transportation fleet shows that the usage of a typical asset decreases as it ages. One possible explanation for decreasing…
(more)
▼ Data from a
state department of transportation fleet shows that the usage of a typical asset decreases as it ages. One possible explanation for decreasing asset usage with age is operator preference for using the newest available asset. In this research the long-term cost and replacement implications of such a "newest first" usage practice are investigated for a fleet of similar assets with a fixed replacement age (age standard). Capital constraints on replacement are not considered. Comparisons are made to a "random" usage practice that results in constant expected usage as an asset ages. For most major cost categories, the newest first usage practice results in greater or
equal costs. It is also shown that asset usage and fixed replacement age are interdependent under the newest first usage practice. The implications of this are that simple approaches found in the literature to address decreasing usage with age give
incorrect results.
Advisors/Committee Members: Kim, David (advisor), Porter, David (committee member).
Subjects/Keywords: Motor vehicle fleets – Oregon – Cost control
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wagner, T. J. (2010). Impact of asset usage preferences on parallel replacement decisions. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/15928
Chicago Manual of Style (16th Edition):
Wagner, Tristan John. “Impact of asset usage preferences on parallel replacement decisions.” 2010. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/15928.
MLA Handbook (7th Edition):
Wagner, Tristan John. “Impact of asset usage preferences on parallel replacement decisions.” 2010. Web. 16 Apr 2021.
Vancouver:
Wagner TJ. Impact of asset usage preferences on parallel replacement decisions. [Internet] [Masters thesis]. Oregon State University; 2010. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/15928.
Council of Science Editors:
Wagner TJ. Impact of asset usage preferences on parallel replacement decisions. [Masters Thesis]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/15928
Oregon State University
9.
Cavazos Sanchez, Myrna Leticia.
Impact of RFID Technology on Replenishment Decisions for Multi-Echelon Supply Chains.
Degree: PhD, Industrial Engineering, 2016, Oregon State University
URL: http://hdl.handle.net/1957/60030
► Radio frequency identification (RFID) has long been regarded as an automated data collection technology that promises solutions to inefficiencies found in supply chains such as…
(more)
▼ Radio frequency identification (RFID) has long been regarded as an automated data collection technology that promises solutions to inefficiencies found in supply chains such as “just-in-case” inventory stock, inventory obsolescence, stockouts, and theft. However, the disappointingly slow return on RFID investment has forced companies to examine and redefine RFID initiatives.
In this research, a methodology to model different inventory replenishment scenarios in multi-stage, multi-player supply chains with and without the implementation of RFID technology were developed. The main objective of this methodology is to help organizations gain a better understanding of how RFID technology may enable more effective replenishment decisions in multi-echelon supply chain designs. To accomplish this objective, the main research tasks were divided into two stages.
In the first stage, an exploratory study was conducted to evaluate the impact of different supply chain performance (SCP) factors on two different multi-echelon supply chain designs. Twelve SCP factors were analyzed using a designed experiment, and a total of 3,200 experimental runs were conducted. The results of the exploratory study showed that five SCP factors had a significant effect on the performance of both supply chain designs with respect to the response variables total number of stockouts and fill rate. It was also revealed that even with the implementation of RFID technology, the fill rates observed at different echelons in both supply chain designs were not very high.
The results of the exploratory study motivated the implementation of a multi-echelon inventory optimization (MEIO) model. A MEIO model was selected because it relies on centrally located information to make replenishment decisions, and RFID can leverage the level of detailed information needed for the model. The objective of implementing a MEIO model was to evaluate the performance of both supply chain designs in terms of overall costs and fill rates for each player in the supply chains. Three SCP factors were analyzed using a designed experiment, and a total of 4,800 experimental runs were conducted to better understand under which scenarios RFID is cost- effective. The results of the second phase showed that all players in both supply chain designs experienced an increase in their fill rates and a decrease in the number of stockouts when RFID was implemented. However, the implementation of RFID was only profitable in scenarios where the unit cost was high.
Advisors/Committee Members: Porter, David (advisor), Kim, David (committee member).
Subjects/Keywords: RFID; Business logistics
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cavazos Sanchez, M. L. (2016). Impact of RFID Technology on Replenishment Decisions for Multi-Echelon Supply Chains. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/60030
Chicago Manual of Style (16th Edition):
Cavazos Sanchez, Myrna Leticia. “Impact of RFID Technology on Replenishment Decisions for Multi-Echelon Supply Chains.” 2016. Doctoral Dissertation, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/60030.
MLA Handbook (7th Edition):
Cavazos Sanchez, Myrna Leticia. “Impact of RFID Technology on Replenishment Decisions for Multi-Echelon Supply Chains.” 2016. Web. 16 Apr 2021.
Vancouver:
Cavazos Sanchez ML. Impact of RFID Technology on Replenishment Decisions for Multi-Echelon Supply Chains. [Internet] [Doctoral dissertation]. Oregon State University; 2016. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/60030.
Council of Science Editors:
Cavazos Sanchez ML. Impact of RFID Technology on Replenishment Decisions for Multi-Echelon Supply Chains. [Doctoral Dissertation]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/60030
10.
Saeedi, Amirali.
Utilizing wireless-based data collection units for automated vehicle movement data collection.
Degree: PhD, Industrial Engineering, 2013, Oregon State University
URL: http://hdl.handle.net/1957/37210
► There are many different types of automatic data collection technologies that have been used in transportation system applications such as pneumatic tubes, radar, video cameras,…
(more)
▼ There are many different types of automatic data collection technologies that have been used in transportation system applications such as pneumatic tubes, radar, video cameras, inductive loops detectors, wireless toll tags, and global positioning systems (GPS). Nevertheless, there are still multiple examples of important and helpful transportation system data that still require manual data collection. In this research, the automatic transportation system data collection capabilities are expanded by enhancements in the use of wireless communications technology. In recent years, smartphones and electronic peripherals with wireless communication capabilities have become very popular. Many of these electronic devices include a Bluetooth or Wi-Fi wireless radio, whose presence in a vehicle can be used as a vehicle identifier. With wireless on-board devices available now and in the future, this research explores how roadside data collection units (DCUs) communicating with on-board devices can be used for the automated data collection of important road system data such as intersection performance data.
To this end, two approaches for wirelessly collecting vehicle movement over a short
road segment were explored. One approach utilized the collection and triangulation of wireless signal strength data, and demonstrated the capabilities and limitations of this approach. The second approach focused on developing methods for utilizing wireless signal strength data for vehicle point detection and identification. The vehicle point detection methods developed were applied to collect travel time data over signalized arterial roads, and to collect intersection delay data for a three way stop controlled intersection. The results from these case studies indicate a significant advantage in the proposed data collection system over the existing data collection approaches presented in the literature.
Advisors/Committee Members: Kim, David (advisor), Porter, David (committee member).
Subjects/Keywords: Wireless Data Collection; Automatic data collection systems
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Saeedi, A. (2013). Utilizing wireless-based data collection units for automated vehicle movement data collection. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/37210
Chicago Manual of Style (16th Edition):
Saeedi, Amirali. “Utilizing wireless-based data collection units for automated vehicle movement data collection.” 2013. Doctoral Dissertation, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/37210.
MLA Handbook (7th Edition):
Saeedi, Amirali. “Utilizing wireless-based data collection units for automated vehicle movement data collection.” 2013. Web. 16 Apr 2021.
Vancouver:
Saeedi A. Utilizing wireless-based data collection units for automated vehicle movement data collection. [Internet] [Doctoral dissertation]. Oregon State University; 2013. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/37210.
Council of Science Editors:
Saeedi A. Utilizing wireless-based data collection units for automated vehicle movement data collection. [Doctoral Dissertation]. Oregon State University; 2013. Available from: http://hdl.handle.net/1957/37210
11.
Darabi, Shooka.
Modeling and analyzing processes with infrequent failures : implications for process monitoring policies.
Degree: MS, Industrial Engineering, 2013, Oregon State University
URL: http://hdl.handle.net/1957/43344
► Continues improvement of industrial systems require constant measuring process variation and eliminating extraneous variation whenever possible to push the target measures as close to the…
(more)
▼ Continues improvement of industrial systems require constant measuring process
variation and eliminating extraneous variation whenever possible to push the target
measures as close to the ideal value as possible. Statistical Processes Control (SPC)
technique is a very efficient statistical technique for monitoring and controlling processes
variation. In recent years an alternate Shewhart-type statistical quality control charts
called g-chart has been developed for controlling process variation where failure is
infrequent like hospital acquired infections.
However, g-chart, EWMA chart and probability based control charts, which are the main
control charts used for monitoring infrequent failure processes fail to detect changes in
the process quickly enough. As a solution it was proposed to inspect and follow-up on
every failure that occurs in the process.
A mathematical model for the long-run cost of a quality control policy is developed. This
model is used to compare the cost of following up on every failure policy with the cost of
using statistical control chart for monitoring processes.
By comparing the total cost per hour of using statistical control chart method with the
total cost per hour of following up on every failure, it is concluded that following up on
every failure policy results in quick detection of changes in the process and it is also a
more cost efficient method.
Advisors/Committee Members: Kim, David (advisor), Emerson, Sarah (committee member).
Subjects/Keywords: Statistical Process Control; Process control – Statistical methods
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Darabi, S. (2013). Modeling and analyzing processes with infrequent failures : implications for process monitoring policies. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/43344
Chicago Manual of Style (16th Edition):
Darabi, Shooka. “Modeling and analyzing processes with infrequent failures : implications for process monitoring policies.” 2013. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/43344.
MLA Handbook (7th Edition):
Darabi, Shooka. “Modeling and analyzing processes with infrequent failures : implications for process monitoring policies.” 2013. Web. 16 Apr 2021.
Vancouver:
Darabi S. Modeling and analyzing processes with infrequent failures : implications for process monitoring policies. [Internet] [Masters thesis]. Oregon State University; 2013. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/43344.
Council of Science Editors:
Darabi S. Modeling and analyzing processes with infrequent failures : implications for process monitoring policies. [Masters Thesis]. Oregon State University; 2013. Available from: http://hdl.handle.net/1957/43344
12.
Lian, Sidi.
Heat treatment effects on CPM-M4 tool steel performance as edged blade material.
Degree: MS, Materials Science, 2014, Oregon State University
URL: http://hdl.handle.net/1957/54906
► CPM-M4 tool steel is a commonly used knife blade material due to its high strength and wear resistance. The goal of this thesis is to…
(more)
▼ CPM-M4 tool steel is a commonly used knife blade material due to its high strength and wear resistance. The goal of this thesis is to understand how heat treatment parameters affect blade performance and microstructure.Five heat treatments were applied to CPM-M4 steel by varying austenitizing and tempering temperatures. The microstructures were examined by optical microscopy, scanning electron microscopy and limited amounts of energy-dispersive X-ray spectroscopy. The carbide fraction, size, count, spacing and chemistry were characterized from the microstructural analysis. Blade performance was examined by hardness, 3-Point bend, impact, and CATRA (edgeretention) testing. The results show that the austenitizing temperature is a significant factor that affects all mechanical properties tested. The max load in 3-Point bend test increases with the carbides fraction that can be maximized by controlling austenitizing temperature. Both austenitizing temperature and tempering temperature have significant effects on the hardness. As for the impact performance, the impact toughness increases with the carbides density. Additionally, we can achieve comparatively high impact toughness in low austenitizing temperature without decreasing hardness through lowering the tempering teperature, because tempering temperature has no significant effect on impact toughness. The edge retention of CPM-M4 steel relates to its hardness. Harder materials can provide a better edge retention for knife blade.
Advisors/Committee Members: Tucker, Julie (advisor), Kim, David (committee member).
Subjects/Keywords: Heat Treatment; Tool-steel – Heat treatment
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lian, S. (2014). Heat treatment effects on CPM-M4 tool steel performance as edged blade material. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/54906
Chicago Manual of Style (16th Edition):
Lian, Sidi. “Heat treatment effects on CPM-M4 tool steel performance as edged blade material.” 2014. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/54906.
MLA Handbook (7th Edition):
Lian, Sidi. “Heat treatment effects on CPM-M4 tool steel performance as edged blade material.” 2014. Web. 16 Apr 2021.
Vancouver:
Lian S. Heat treatment effects on CPM-M4 tool steel performance as edged blade material. [Internet] [Masters thesis]. Oregon State University; 2014. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/54906.
Council of Science Editors:
Lian S. Heat treatment effects on CPM-M4 tool steel performance as edged blade material. [Masters Thesis]. Oregon State University; 2014. Available from: http://hdl.handle.net/1957/54906
13.
Agahi, Maryam.
Rank and linear correlation differences in simulation and other applications.
Degree: MS, Industrial Engineering, 2013, Oregon State University
URL: http://hdl.handle.net/1957/42769
► Monte Carlo simulation is used to quantify and characterize uncertainty in a variety of applications such as financial/engineering economic analysis, and project management. The dependence…
(more)
▼ Monte Carlo simulation is used to quantify and characterize uncertainty in a variety of applications such as financial/engineering economic analysis, and project management. The dependence or correlation between the random variables modeled can also be simulated to add more accuracy to simulations. However, there exists a difference between how correlation is most often estimated from data (linear correlation), and the correlation that is simulated (rank correlation).
In this research an empirical methodology is developed to estimate the difference between the specified linear correlation between two random variables, and the resulting linear correlation when rank correlation is simulated. It is shown that in some cases there can be relatively large differences. The methodology is based on the shape of the quantile-quantile plot of two distributions, a measure of the linearity of the quantile-quantile plot, and the level of correlation between the two random variables. This methodology also gives a user the ability to estimate the rank correlation that when simulated, generates the desired linear correlation. This methodology enhances the accuracy of simulations with dependent random variables while utilizing existing simulation software tools.
Advisors/Committee Members: Kim, David S. (advisor), Madsen, Lisa J. (committee member).
Subjects/Keywords: Simulation; Correlation (Statistics)
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Agahi, M. (2013). Rank and linear correlation differences in simulation and other applications. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42769
Chicago Manual of Style (16th Edition):
Agahi, Maryam. “Rank and linear correlation differences in simulation and other applications.” 2013. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/42769.
MLA Handbook (7th Edition):
Agahi, Maryam. “Rank and linear correlation differences in simulation and other applications.” 2013. Web. 16 Apr 2021.
Vancouver:
Agahi M. Rank and linear correlation differences in simulation and other applications. [Internet] [Masters thesis]. Oregon State University; 2013. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/42769.
Council of Science Editors:
Agahi M. Rank and linear correlation differences in simulation and other applications. [Masters Thesis]. Oregon State University; 2013. Available from: http://hdl.handle.net/1957/42769
14.
Suriya, Atipong.
Modeling and optimization of radio frequency identification networks for inventory management.
Degree: PhD, Industrial Engineering, 2013, Oregon State University
URL: http://hdl.handle.net/1957/42387
► Stock loss and out-of-stocks are outcomes of poorly designed inventory management systems and can lead to significant revenue losses. Inventory management systems (IMS) based on…
(more)
▼ Stock loss and out-of-stocks are outcomes of poorly designed inventory management systems and can lead to significant revenue losses. Inventory management systems (IMS) based on radio frequency identification (RFID) have the potential to minimize these losses if they are properly designed and deployed. However, the placement of RFID readers to support IMS is often done on a trial and error basis which is time consuming and results in less than optimal coverage.
A methodology to model and optimize the design of RFID networks for IMS was developed in this research. The main objective of this methodology is to find the optimal location and number of RFID readers to ensure a desired level of coverage. Finding a solution that ensures the complete coverage of an entire facility (e.g., a warehouse) would allow an RFID network to support real-time inventory tracking and localization which can minimize shrinkage and prevent theft. Two model formulations that incorporate critical RFID network design parameters known to have an effect on the performance of RFID-based IMS were developed. When compared to prior work, the underlying assumptions that guided the construction of the model formulations make the modeling of the RFID-based IMS more realistic and applicable to warehouse environments. These important assumptions included the use of elliptical antenna coverage, the consideration
of the uplink communication channel (i.e., tag-to-reader), the utilization of appropriate propagation models for the downlink and for the uplink communication channels, and the consideration of obstacles. The heuristic optimization algorithms particle swam optimization (PSO) and genetic algorithm (GA) were applied to the model formulations to search for feasible solutions that ensured appropriate coverage for the warehouse facility, with less interference and within reasonable computation time.
The results show that the proposed methodology works very well with small rectangular facilities and small inverted-T facilities, but there are some limitations when applying it to large facilities.
Advisors/Committee Members: Porter, J. David (advisor), Kim, David (committee member).
Subjects/Keywords: Radio frequency identification (RFID); Radio frequency identification systems
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Suriya, A. (2013). Modeling and optimization of radio frequency identification networks for inventory management. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/42387
Chicago Manual of Style (16th Edition):
Suriya, Atipong. “Modeling and optimization of radio frequency identification networks for inventory management.” 2013. Doctoral Dissertation, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/42387.
MLA Handbook (7th Edition):
Suriya, Atipong. “Modeling and optimization of radio frequency identification networks for inventory management.” 2013. Web. 16 Apr 2021.
Vancouver:
Suriya A. Modeling and optimization of radio frequency identification networks for inventory management. [Internet] [Doctoral dissertation]. Oregon State University; 2013. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/42387.
Council of Science Editors:
Suriya A. Modeling and optimization of radio frequency identification networks for inventory management. [Doctoral Dissertation]. Oregon State University; 2013. Available from: http://hdl.handle.net/1957/42387
15.
Kimmell, Robert (Robert Kyle).
Synthesis and characterization of magnetic composite materials.
Degree: MS, Chemical Engineering, 2010, Oregon State University
URL: http://hdl.handle.net/1957/15237
► Iron epoxy composite materials were made and their relative magnetic permeability was measured. A measurement device was created to measure the relative magnetic permeability for…
(more)
▼ Iron epoxy composite materials were made and their relative magnetic permeability was measured. A measurement device was created to measure the relative magnetic permeability for the specific application. This device proved to be accurate and reliable. The magnetic properties of composite materials have been shown to be controllable, with a linear response to volume fraction of iron in the composite. A material with a maximum relative magnetic permeability was achieved at /mu[subscript r]= 650. Curing the composite material in a magnetic field proved to increase the relative magnetic permeability of the composite when the axis that the composite was aligned was the same as the direction that the measurement device reads. The perpendicular direction produced no change in relative magnetic permeability.
Nanocomposite magnetic materials were investigated based on the use of superparamagnetic nanoparticles. The iron nanoparticles were produced in both a batch reactor and a microfluidic system. The microfluidic system consisted of a micromixer provided by NanoBits, Inc. and a length of PEEK tubing. A half factorial experiment was performed on the microfluidic system to determine the important factors when controlling the size of iron nanoparticles. The nanoparticles were measured for crystal size by x-ray diffraction using Rietveld refinement to model the size strain broadening caused by the small crystal size. Rietveld analysis was performed with the help of the software package FullProf.
Advisors/Committee Members: Yokochi, Alex (advisor), Chang, Kim, David Alex (committee member).
Subjects/Keywords: nanoparticle; Nanocomposites (Materials)
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kimmell, R. (. K. (2010). Synthesis and characterization of magnetic composite materials. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/15237
Chicago Manual of Style (16th Edition):
Kimmell, Robert (Robert Kyle). “Synthesis and characterization of magnetic composite materials.” 2010. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/15237.
MLA Handbook (7th Edition):
Kimmell, Robert (Robert Kyle). “Synthesis and characterization of magnetic composite materials.” 2010. Web. 16 Apr 2021.
Vancouver:
Kimmell R(K. Synthesis and characterization of magnetic composite materials. [Internet] [Masters thesis]. Oregon State University; 2010. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/15237.
Council of Science Editors:
Kimmell R(K. Synthesis and characterization of magnetic composite materials. [Masters Thesis]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/15237
16.
Porter, Spencer D.
Development of self-registration features for the assembly of a microchannel hemodialyser.
Degree: MS, Industrial Engineering, 2012, Oregon State University
URL: http://hdl.handle.net/1957/33636
► More than 1.2 million people worldwide require regular hemodialysis therapy to treat end stage renal failure. In the United States alone, there are 300,000 patients…
(more)
▼ More than 1.2 million people worldwide require regular hemodialysis therapy to treat end stage renal failure. In the United States alone, there are 300,000 patients and the National Kidney Foundation predicts that this number will double in the next 10 years. Currently most dialysis patients receive treatment at a dialysis center and need three 4-5 hour treatments each week. While these treatments are useful, more frequent and longer duration dialysis better simulates natural kidney function. Consequently, at-home hemodialysis is expected to provide patients a better quality of life. Current hemodialysis systems are too expensive to support at-home hemodialysis. Cost drivers include the capital costs of the hemodialysis equipment and the raw material costs of expensive hemodialysis membranes. Microchannel hemodialysers have smaller form factors requiring significantly less membrane while enabling reductions in the size and cost of capital equipment. Microchannel devices are typically made by microchannel lamination methods involving the patterning, registration and bonding of thin laminae. Findings in this paper show that membrane utilization is highly dependent on registration accuracy with membrane utilization often dropping below 25%. Efforts here focus on the development of a self-registration method for assembling microchannel hemodialysers capable of supporting registration accuracies below 25 μm over a 50 mm polycarbonate lamina. Using these methods, registration accuracies below 13 μm were measured over a 50 mm scale. A mass transfer test article was produced with measured average one
dimensional misregistration below 19 μm with a demonstrated membrane utilization of 44.9% when considering both microchannel and header regions. Mass transfer results suggest that the device performed with a mass transfer area of 90.59 mm². A design is proposed describing membrane utilization of over 79%.
Advisors/Committee Members: Paul, Brian K. (advisor), Kim, David S. (committee member).
Subjects/Keywords: Hemodialyzers – Design and construction
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Porter, S. D. (2012). Development of self-registration features for the assembly of a microchannel hemodialyser. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/33636
Chicago Manual of Style (16th Edition):
Porter, Spencer D. “Development of self-registration features for the assembly of a microchannel hemodialyser.” 2012. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/33636.
MLA Handbook (7th Edition):
Porter, Spencer D. “Development of self-registration features for the assembly of a microchannel hemodialyser.” 2012. Web. 16 Apr 2021.
Vancouver:
Porter SD. Development of self-registration features for the assembly of a microchannel hemodialyser. [Internet] [Masters thesis]. Oregon State University; 2012. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/33636.
Council of Science Editors:
Porter SD. Development of self-registration features for the assembly of a microchannel hemodialyser. [Masters Thesis]. Oregon State University; 2012. Available from: http://hdl.handle.net/1957/33636
Oregon State University
17.
Staley, Dan R.
General design rules for the allocation of buffers in closed serial production lines.
Degree: MS, Industrial Engineering, 2006, Oregon State University
URL: http://hdl.handle.net/1957/22116
► One of the classic problems in industrial engineering is the buffer allocation problem. The objective of the buffer allocation problem is to maximize some line…
(more)
▼ One of the classic problems in industrial engineering is the buffer allocation
problem. The objective of the buffer allocation problem is to maximize some line
output, typically throughput, through the allocation of buffers throughout the
production line. Previous work in this area has focused on either determining
general design rules or developing heuristics to determine optimal buffer
placement. Most of this work was done on production lines which were assumed
to have an unlimited supply of jobs to the first workstation and an unlimited
storage space after the last workstation (open production lines).
The purpose of this research was to study buffer allocation in closed production
lines and focus on the validation and development of general design rules for
buffer placement. Balanced and unbalanced lines were studied with workstations
representing manual stations, and then with workstations representing automated
machines.
The general approach taken was to first identify an existing buffer allocation rule
established for open lines and then determine the corresponding rule for closed
production lines. Next, a set of experiments were designed to test the closed
production line design rule. Finally, the design rule was validated, modified, or
reformulated.
The findings of this research indicate that an even buffer allocation is optimal for
balanced closed production lines. It also showed similar behavior to open
production lines when a bottleneck is present, but the effect of the bottleneck is not
as strong. Also, differences between reliable and unreliable lines were observed.
Finally, the rules developed seemed to be consistent for short lines as well as long
ones.
Several of the rules developed in this research can be utilized immediately in the
design of closed production lines. Also, because of the lack of literature on closed
production lines, it will serve as a good first step into the understanding of the role
of buffers in closed production lines.
Advisors/Committee Members: Kim, David S. (advisor).
Subjects/Keywords: Assembly-line methods
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Staley, D. R. (2006). General design rules for the allocation of buffers in closed serial production lines. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22116
Chicago Manual of Style (16th Edition):
Staley, Dan R. “General design rules for the allocation of buffers in closed serial production lines.” 2006. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/22116.
MLA Handbook (7th Edition):
Staley, Dan R. “General design rules for the allocation of buffers in closed serial production lines.” 2006. Web. 16 Apr 2021.
Vancouver:
Staley DR. General design rules for the allocation of buffers in closed serial production lines. [Internet] [Masters thesis]. Oregon State University; 2006. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/22116.
Council of Science Editors:
Staley DR. General design rules for the allocation of buffers in closed serial production lines. [Masters Thesis]. Oregon State University; 2006. Available from: http://hdl.handle.net/1957/22116
Oregon State University
18.
Vergara Arteaga, Hector A.
Efficient heuristics for buffer allocation in closed serial production lines.
Degree: MS, Industrial Engineering, 2005, Oregon State University
URL: http://hdl.handle.net/1957/30021
► The optimal allocation of buffers in serial production systems is one of the oldest and most researched problems in Industrial Engineering. In general, there are…
(more)
▼ The optimal allocation of buffers in serial production systems is one of the
oldest and most researched problems in Industrial Engineering. In general, there
are three main approaches to the buffer allocation problem when the objective is to
maximize throughput. The first is basically a systematic trial and error procedure
supported either by discrete event simulation or analytical models. A second
approach is to allocate buffers based on general design rules that have been
established in the research literature through experimentation. And the third
approach is to apply a buffer allocation optimization algorithm to a specific
production line. All these approaches have limitations and could be time and
resource consuming. Additionally, most of the existing research on buffer
allocation only considers production systems modeled with an infinite supply of
raw materials before the first workstation and an unlimited capacity for finished
goods after the last workstation. In reality many production systems are designed
as closed systems where an interaction between the last and the first workstations in
the line is present. In a closed production system, there is a finite buffer after the
last workstation and the number of "carriers" holding jobs that move through the
line is fixed.
The objective of this thesis was to develop efficient heuristic algorithms for
the buffer allocation problem in closed production systems. Two heuristics for
buffer allocation were implemented. Heuristic H 1 uses the idea that highly utilized
workstation stages require any available buffer more than sub-utilized stages.
Heuristic H2 uses information stored in the longest path of a network representation
of job flow to determine where additional buffers are most beneficial.
An experiment was designed to determine if there are any statistically
significant differences between throughput values with buffer allocations obtained
with a genetic algorithm, also developed in this research, and through puts with
buffer allocations generated by Hi and H2. Several types of closed production
systems were examined in eight different test cases. No significant differences in
performance were observed. The efficiency of the heuristics was also analyzed. A
significant difference between the speeds of Hi and H2 is found.
The analysis performed in this research indicates that heuristic H2 is
sufficiently effective and accurate for determining near optimal buffer allocations in
closed production systems.
Advisors/Committee Members: Kim, David S. (advisor).
Subjects/Keywords: Buffer storage (Computer science)
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Vergara Arteaga, H. A. (2005). Efficient heuristics for buffer allocation in closed serial production lines. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/30021
Chicago Manual of Style (16th Edition):
Vergara Arteaga, Hector A. “Efficient heuristics for buffer allocation in closed serial production lines.” 2005. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/30021.
MLA Handbook (7th Edition):
Vergara Arteaga, Hector A. “Efficient heuristics for buffer allocation in closed serial production lines.” 2005. Web. 16 Apr 2021.
Vancouver:
Vergara Arteaga HA. Efficient heuristics for buffer allocation in closed serial production lines. [Internet] [Masters thesis]. Oregon State University; 2005. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/30021.
Council of Science Editors:
Vergara Arteaga HA. Efficient heuristics for buffer allocation in closed serial production lines. [Masters Thesis]. Oregon State University; 2005. Available from: http://hdl.handle.net/1957/30021
Oregon State University
19.
Sharma, Akash.
Effectiveness of using two and three-parameter distributions in place of "best-fit distributions" in discrete event simulation models of production lines.
Degree: MS, Industrial Engineering, 2003, Oregon State University
URL: http://hdl.handle.net/1957/30055
► This study presents the results of using common two or three-parameter "default" distributions in place of "best fit distributions" in simulations of serial production lines…
(more)
▼ This study presents the results of using common two or three-parameter "default"
distributions in place of "best fit distributions" in simulations of serial production lines
with finite buffers and blocking. The default distributions used instead of the best-fit
distribution are chosen such that they are non-negative, unbounded, and can match either
the first two moments or the first three moments of the collected data. Furthermore, the
selected default distributions must be commonly available (or easily constructed from)
distributions in simulation software packages. The lognormal is used as the two-parameter
distribution to match the first two moments of the data. The two-level hyper-exponential
and three-parameter lognormal are used as three-parameter distributions to
match the first three moments of the data. To test the use of these distributions in
simulations, production lines have been separated into two major classes: automated and
manual. In automated systems the workstations have fixed processing times and random
time between failures, and random repair times. In manual systems, the workstations are
reliable but have random processing times. Results for both classes of lines show that the
differences in throughput from simulations using best-fit distributions and two parameter
lognormal is small in some cases and can be reduced in others by matching the first three
moments of the data. Also, different scenarios are identified which lead to higher
differences in throughput when using a two-parameter default distribution.
Advisors/Committee Members: Kim, David S. (advisor).
Subjects/Keywords: Production management – Simulation methods
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sharma, A. (2003). Effectiveness of using two and three-parameter distributions in place of "best-fit distributions" in discrete event simulation models of production lines. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/30055
Chicago Manual of Style (16th Edition):
Sharma, Akash. “Effectiveness of using two and three-parameter distributions in place of "best-fit distributions" in discrete event simulation models of production lines.” 2003. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/30055.
MLA Handbook (7th Edition):
Sharma, Akash. “Effectiveness of using two and three-parameter distributions in place of "best-fit distributions" in discrete event simulation models of production lines.” 2003. Web. 16 Apr 2021.
Vancouver:
Sharma A. Effectiveness of using two and three-parameter distributions in place of "best-fit distributions" in discrete event simulation models of production lines. [Internet] [Masters thesis]. Oregon State University; 2003. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/30055.
Council of Science Editors:
Sharma A. Effectiveness of using two and three-parameter distributions in place of "best-fit distributions" in discrete event simulation models of production lines. [Masters Thesis]. Oregon State University; 2003. Available from: http://hdl.handle.net/1957/30055
Oregon State University
20.
Nagarajan, Raghavendran D.
Linking equations for the analysis of a serial automated workstation system.
Degree: MS, Industrial Engineering, 2003, Oregon State University
URL: http://hdl.handle.net/1957/32257
► In this research, an analytical model for analyzing a production line consisting of a series of automated workstations with infinite buffers is developed. Automated workstations…
(more)
▼ In this research, an analytical model for analyzing a production line consisting of a series
of automated workstations with infinite buffers is developed. Automated workstations are
assumed to have deterministic processing times, and independent exponentially
distributed operating time between failures and repair times. The analytical model starts
with existing results from a Markov chain model of two automated workstations in series,
where analytical expressions are developed for the average number of jobs in the second
workstation and its queue. This research focuses on the development of a set of linking
equations that can be used to analyze larger systems using a two workstation
decomposition approach. These linking equations utilize probabilities computed in the
two-workstation Markov chain model to compute workstation parameters for a single
workstation such that the first two moments of the inter-departure process from the two-workstation
system and the single workstation are the same. Simulations of a number of
different 3-workstation and 10-workstation systems were carried out employing a range
of workstation utilizations and processing time coefficients of variation. The results from
these simulations were compared with those calculated with the analytical model and
various two-parameter GI/G/1 approximations and linking equations present in the
literature. The analytical model resulted in an average absolute percentage difference of
less than 5% in the systems studied, and performed much better than general two parameter
G/G/1 approximations. The analytical model was also robust in ranking the
queues in the order of the average number of jobs present in the queues.
Advisors/Committee Members: Kim, David S. (advisor).
Subjects/Keywords: Manufacturing processes – Automation
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Nagarajan, R. D. (2003). Linking equations for the analysis of a serial automated workstation system. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/32257
Chicago Manual of Style (16th Edition):
Nagarajan, Raghavendran D. “Linking equations for the analysis of a serial automated workstation system.” 2003. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/32257.
MLA Handbook (7th Edition):
Nagarajan, Raghavendran D. “Linking equations for the analysis of a serial automated workstation system.” 2003. Web. 16 Apr 2021.
Vancouver:
Nagarajan RD. Linking equations for the analysis of a serial automated workstation system. [Internet] [Masters thesis]. Oregon State University; 2003. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/32257.
Council of Science Editors:
Nagarajan RD. Linking equations for the analysis of a serial automated workstation system. [Masters Thesis]. Oregon State University; 2003. Available from: http://hdl.handle.net/1957/32257
Oregon State University
21.
Aramphongphun, Chuckaphun.
Application of ultrasonic welding to the rapid prototyping of microfluidic systems for biotechnology.
Degree: MS, Industrial Engineering, 2001, Oregon State University
URL: http://hdl.handle.net/1957/29328
► This paper introduces an alternative technique for the development of microfluidic systems for biotechnology based on mechanical machining and ultrasonic welding. Advantages of this approach…
(more)
▼ This paper introduces an alternative technique for the development of
microfluidic systems for biotechnology based on mechanical machining and
ultrasonic welding. Advantages of this approach over existing prototyping
approaches involving the rapid development of tooling include: (a) short cycle
time, (b) design flexibility, and (c) low cost manufacturing. In addition, the process
provides a migration path to high volume production. A limitation of this system is
that it cannot practically produce microchannels smaller than about 250 μm (0.010
in). However, for many biological cell-based biosensors, this feature scale seems
well suited based on cell viability results. Several issues are discussed relevant to
this approach, including bond strength, seal leakage, and sterilization.
Advisors/Committee Members: Paul, Brian K. (advisor), Kim, David (committee member).
Subjects/Keywords: Rapid prototyping
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Aramphongphun, C. (2001). Application of ultrasonic welding to the rapid prototyping of microfluidic systems for biotechnology. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/29328
Chicago Manual of Style (16th Edition):
Aramphongphun, Chuckaphun. “Application of ultrasonic welding to the rapid prototyping of microfluidic systems for biotechnology.” 2001. Masters Thesis, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/29328.
MLA Handbook (7th Edition):
Aramphongphun, Chuckaphun. “Application of ultrasonic welding to the rapid prototyping of microfluidic systems for biotechnology.” 2001. Web. 16 Apr 2021.
Vancouver:
Aramphongphun C. Application of ultrasonic welding to the rapid prototyping of microfluidic systems for biotechnology. [Internet] [Masters thesis]. Oregon State University; 2001. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/29328.
Council of Science Editors:
Aramphongphun C. Application of ultrasonic welding to the rapid prototyping of microfluidic systems for biotechnology. [Masters Thesis]. Oregon State University; 2001. Available from: http://hdl.handle.net/1957/29328
Oregon State University
22.
Buddhakulsomsiri, Jirachai.
Multi-mode resource-constrained project scheduling problem with resource vacations and task splitting.
Degree: PhD, Industrial Engineering, 2003, Oregon State University
URL: http://hdl.handle.net/1957/31495
► The research presented in this dissertation addresses the Multi-Mode Resource-Constrained Project Scheduling Problem (MMRCPSP) in the presence of resource unavailability. This research is motivated by…
(more)
▼ The research presented in this dissertation addresses the Multi-Mode Resource-Constrained Project Scheduling Problem (MMRCPSP) in the presence of resource
unavailability. This research is motivated by the scheduling of engineering design tasks in
automotive product development to minimize the project completion time, but addresses a
general scheduling situation that is applicable in many contexts.
The current body of MMRCPSP research typically assumes that, 1) individual resource
units are available at all times when assigning tasks to resources and, 2) before assigning tasks
to resources, there must be enough resource availability over time to complete the task without
interruption. In many situations such as assigning engineering design tasks to designers,
resources are not available over the entire project-planning horizon. In the case of engineering
designers and other human resources, unavailability may be due to several reasons such as
vacation, training, or being scheduled to do other tasks outside the project. In addition, when
tasks are scheduled they are often split to accommodate unavailable resources and are not
completed in one continuous time segment. The objectives of this research are to obtain
insight into the types of project scheduling situations where task splitting may result in
significant makespan improvements, and to develop a fast and effective scheduling heuristic
for such situations.
A designed computational experiment was used to gain insight into when task splitting
may provide significant makespan improvements. Problem instances were randomly
generated using a modification of a standard problem generator, and optimally solved with
and without task splitting using a branch and bound algorithm. In total 3,880 problem
instances were solved with and without task splitting. Statistical analysis of the experimental
data reveals that high resource utilization is the most important factor affecting the
improvements obtained by task splitting. The analysis also shows that splitting is more
helpful when resource unavailability occurs in multiple periods of short duration versus fewer
periods of long duration. Another conclusion from the analysis indicates that the project
precedence structure and the number (not amount) of resources used by tasks do not
significantly affect the improvements due to task splitting.
Using the insights from the computational testing, a new heuristic is developed that can
be applied to large problems. The heuristic is an implementation of a simple priority rule-based
heuristic with a new parameter used to control the number of task splits. It is desirable
to obtain the majority of task splitting benefits with the smallest number of split tasks.
Computational experiments are conducted to evaluate its performance against known optimal
solutions for small sized problems. A deterministic version of the heuristic found optimal
solutions for 33% of the problems and a stochastic version found optimal solutions for over
70%. The average…
Advisors/Committee Members: Kim, David S. (advisor), Schafer, Daniel (committee member).
Subjects/Keywords: Production scheduling
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Buddhakulsomsiri, J. (2003). Multi-mode resource-constrained project scheduling problem with resource vacations and task splitting. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/31495
Chicago Manual of Style (16th Edition):
Buddhakulsomsiri, Jirachai. “Multi-mode resource-constrained project scheduling problem with resource vacations and task splitting.” 2003. Doctoral Dissertation, Oregon State University. Accessed April 16, 2021.
http://hdl.handle.net/1957/31495.
MLA Handbook (7th Edition):
Buddhakulsomsiri, Jirachai. “Multi-mode resource-constrained project scheduling problem with resource vacations and task splitting.” 2003. Web. 16 Apr 2021.
Vancouver:
Buddhakulsomsiri J. Multi-mode resource-constrained project scheduling problem with resource vacations and task splitting. [Internet] [Doctoral dissertation]. Oregon State University; 2003. [cited 2021 Apr 16].
Available from: http://hdl.handle.net/1957/31495.
Council of Science Editors:
Buddhakulsomsiri J. Multi-mode resource-constrained project scheduling problem with resource vacations and task splitting. [Doctoral Dissertation]. Oregon State University; 2003. Available from: http://hdl.handle.net/1957/31495
. 
Open Access Theses and Dissertations
