Browsing by Subject "Semiconductor industry"

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Essays on management of new technologies in manufacturing and service industries
(2015-12) Sano, Hiroki; Anderson, Edward George; Gilbert, Stephen M; Gutierrez, Genaro J; Morrice, Douglas J; Tan, Burcu
This dissertation studies management of new technologies in the context of manufacturing and service, respectively, focusing on different issues specific to each type of industry. The first two essays investigate cooperative decisions regarding development and ownership of new technologies between competing manufacturers, and the third essay explores the positive effects of social media marketing (SMM) activities for companies of services with high perceived risk. In the first essay, we consider firms which can individually invest a fixed cost to enter a market that generates fixed industry-wide revenue if at least one firm invests. Instead of individually investing, each firm can also invest with its rival(s) as a coalition to share their cost efficiency and their total cost while incurring an additional coordination cost. The industry-wide revenue is divided to firms in the market according to their relative market power. We characterize the stable coalition structure and examine the industry-wide efficiency of the structure for a duopoly case and a restricted three-firm case, respectively. In the second essay, we consider a Cournot duopoly model in which one firm originally owns a new process technology while the other firm originally owns an existing process technology. Compared to the existing one, the new process technology enables production with a lower unit capacity cost while involving yield uncertainty in production capacity. We show that yield uncertainty of the new process technology can increase the likelihood of the new process technology being shared whether or not transfer payment is allowed between the two firms. In the third essay, we empirically investigate how customers of non-life insurance services in Japan recognize the effects of companies' SMM activities and how those SMM activities influence customer satisfaction (SAT) and relationship strength (RS). The results indicate that the dominant dimensions of the SMM construct are Interaction, Customization, and Security whereas Trendiness fails to demonstrate a dominant role. Further results indicate that both the direct effect of SMM on RS and the indirect effect of SMM on RS with SAT playing a mediating role are positive and significant.
Modeling and model based fault diagnosis of dry vacuum pumps in the semiconductor industry
(2013-12) Choi, Jae-Won, active 2013; Bryant, Michael David
Vacuum technology is ubiquitous in the high tech industries and scientific endeavors. Since vacuum pumps are critical to operation, semiconductor manufacturers desire reliable operations, ability to schedule downtime, and less costly maintenance services. To better cope with difficult maintenance issues, interests in novel fault diagnosis techniques are growing. This study concerns model based fault diagnosis and isolation (MB-FDI) of dry vacuum pumps in the semiconductor industry. Faults alter normal operation of a vacuum pump resulting in performance deviations, discovered by measurements. Simulations using an appropriate mathematical model with suitably chosen parameters can mimic faulty behavior. This research focuses on the construction of a detailed multi-stage dry vacuum pump model for MB-FDI, and the development of a simple and efficient FDI method to analyze common incipient faults such as particulate deposition and gas leak inside the pump. The pump model features 0-D thermo-fluid dynamics, scalable geometric representations of Roots blower, claw pumps and inter-stage port interfaces, a unified pipe model seamlessly connecting from free molecular to turbulent regimes, sophisticated internal leakage model considering true pump geometry and tribological aspects, and systematic assembly of a multi-stage configuration using single stage pump models. Design of a simple FDI technique for the dry vacuum pump includes staged fault simulations using faulty pump models, parametric study of faulty pump behaviors, and design of a health indicator based on classification. The main research contributions include the developments of an accurate multi-stage dry pump model with many features not found in existing pump models, and the design of a simple MB-FDI technique to detect and isolate the common faults found in dry vacuum pumps. The proposed dry pump model can pave the way for the future development of advanced MB-FDI methods, also performance improvement of existing dry vacuum pumps. The proposed fault classification charts can serve as a quick guideline for vacuum pump manufactures to isolate roots causes from faulty symptoms.
The shifting role of the state in South Korea’s industrial and technological development : a review of the semiconductor industry
(2011-05) Kang, Seong Cheol; Flamm, Kenneth, 1951-; Bussell, Jennifer
Due to a weak industrial base coupled with devastation from the Korean War, South Korea was a latecomer in industrialization, and formal economic development began during the 1960s under heavy state intervention. Within this broader context of industrial development, this research examines the role of state in the development of South Korea’s semiconductor industry. The results show that government support for semiconductors has gradually shifted from full-fledged intervention through both initial technology procurement and commercialization during the 1960s, to a minimal role of developing human capital and promoting private sector investment in R&D at present. But despite the importance of adhering to principles of free trade, the Hynix crisis of 2003 and the recent economic crisis of 2008 demonstrate the continued importance of the government’s role in protecting and promoting strategic industries such as semiconductors.