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Process Development For High Powered Amplifier Au/Sn Eutectic Die Attach Via Vacuum Furnace, Zachary F. Blanden
Process Development For High Powered Amplifier Au/Sn Eutectic Die Attach Via Vacuum Furnace, Zachary F. Blanden
Graduate Dissertations and Theses
This research was conducted to develop and qualify a vacuum GaAs semiconductor monolithic microwave integrated circuit die attach process. Research was done to understand the causes and effects of voiding levels on device performance and reliability. Simultaneous investigation was done to qualify vacuum-attach as a successful methodology by which minimal voiding levels were achieved. After an initial vacuum-attach trial was completed to verify the methodology, internal accept/reject criteria were developed to qualify die attach interfaces. A dual phase attachment methodology was created to minimize tolerance stacking resulting in more consistent component placement. MATLAB image processing code was developed to quantify …
Modeling Of Selection Of Supply Sources For Hospitals, Siva Raghava Sai Rohith Valiveti
Modeling Of Selection Of Supply Sources For Hospitals, Siva Raghava Sai Rohith Valiveti
Graduate Dissertations and Theses
Most of the hospitals in the USA carry out their purchasing of supplies, including pharmaceuticals, through Group Purchasing Organizations (GPO). GPO is an organization, which aggregates procuring volumes of their member hospitals and negotiates low prices from manufacturers or vendors. According to 2013 statistics, 98% of hospitals in U.S. are purchasing their bulk health care products through GPOs, and it saves U.S. health care industry approximately $36 billion annually. Through these hospitals enjoy advantages by purchasing through their GPOs, there are some disadvantages such as paying membership fees to their GPOs, restricting the purchasing power of the hospitals outside their …