Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 700 for “"Pin"”.
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Practical pin tooling
… few possible applications. Resembling the common pin art toy, a discrete element pin bed has often been proposed as a design for a reconfigurable mold. Conventional actuation strategies are often cumbersome and expensive, due to the quadratic increase in number of pin elements with increasing …
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Galling failures in pin joints
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2002.
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Monopoles and Pin(2)-symmetry
… of a three-manifold equipped equipped with a spinc structure which is isomorphic to its conjugate, we define the counterpart in this context of Manolescu's recent Pin(2)-equivariant Seiberg-Witten-Floer homology. In particular, we provide an alternative approach to his disproof of the …
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Investigating EMV chip and pin card security
… cash transactions, preferring chip and pin cards. Within the context of this study, these are called EMV cards. In the financial industry, the EMV protocol is a global standard for credit and debit card transactions using chip enabled smart cards. EMV stands for Europay, MasterCard, and …
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Broadband pin diode switching and phase shifting
… into the limitations on the bandwidth of PIN diode switches in their different configurations is performed. The Single Pole Double Throw switch constructed with shunt mounted PIN diodes is shown to be bandlimited due to the line lengths involved in the operation. Series mounted diode …
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Flow Boiling in Meso-Scale Pin-Fin Coldplates
… tubes, overlooking crucial geometries such as pin-fin-enhanced mini-channels. This literature gap, particularly the study of flow boiling in pin-fin-enhanced channels in the meso-scale, has limited the availability of physical insights, data, flow regime maps, and correlations that assist in …
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Automated liquid dispensing pin for DNA microarray applications
This thesis describes the research and development of a new liquid dispensing/aspiring system that is capable of producing micro sized spots/droplets for molecular biology research and analysis. In particular, the application is focused on DNA microarray fabrication with the goals of smaller spot …
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Thermomechanical analysis of innovative nuclear fuel pin designs
… on the inner channel of the hottest fuel pin may occur due to excessive internal heat flux, which is controlled by the gap conductance. As the gaps close asymmetrically, the MDNBR limit of 1.3 could also be violated. At the uprated power, control of the gap sizes is needed in order to …
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High throughput pin-tool based automated DNA assembly
… reactions by an order of magnitude using pin tools for small-volume liquid transfer, and which has successfully built 130 new genetic constructs using 192 genetic parts submitted by 11 researchers for both bacterial and mammalian systems. This thesis also presents a model which uses data …
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Rapid contour determination using a floating pin matrix
… of contour determination, using a floating pin matrix which can move to conform to the shape of the contour and output the position of each pin to a computer. The pin matrix is a bed of tightly packed cylinders that can move in the axial direction independent of each other. When the pin …
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Pin-joint test rig design and scaling laws
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Heat Transfer from Low Aspect Ratio Pin Fins
… gas turbines is limited by thermal management. Pin fins are commonly used to augment heat transfer by increasing surface area and increasing turbulence. The present research is focused on but not limited to internal cooling of turbine airfoils using pin fins. Although the pin fins are not …
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Wire wrapped fuel pin hexagonal arrays for PWR service
This work contributes to the Hydride Fuels Project, a collaborative effort between UC Berkeley and MIT aimed at investigating the potential benefits of hydride fuel use in light water reactors (LWRs). Core design is accomplished for both hydride and oxide-fueled cores over a range of geometries via …
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A nearly linear circuit model for the PIN diode.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1972. M.S.
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Reactivity-equivalent physical transformation model for pin cell arrays
… to accurately model the reactivity of individual pin cells. While small, seven-cell RPT arrays are still highly accurate models of TRISO behavior, it is unclear if negligible error will extend to even larger arrays, especially in the presence of a B4C absorber. The validity of RPT array models was …
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Modeling of piston pin lubrication in internal combustion engines
The piston pin joins the piston and the connecting rod to transfer the linear force on the piston to rotate the crankshaft that is the eventual power outlet of the engine. The interfaces between the piston pin and the pin bore as well as the connecting rod small end are one of the most heavily …
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Investigation of Bio-Inspired Pin Geometries for Heat Transfer Applications
<p>Array of circular cylindrical pins or tubes are one of the most widely used type of convection cooling systems, profoundly used in the internal cooling of gas turbine blades. They promote heat transfer due to flow acceleration, secondary flows and wake shedding, at the expense of large pressure …
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The Cosmic Vision of Patrice De La Tour Du Pin
Made available in DSpace on 2014-12-09T20:18:39Z (GMT). No. of bitstreams: 1 6808224.pdf: 6477567 bytes, checksum: 14f41bdbb4148bdca04414daaa70e9cd (MD5) Previous issue date: 1967
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