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Full-Text Articles in Engineering

Efficient Modeling Techniques For Time-Dependent Quantum System With Applications To Carbon Nanotubes, Zuojing Chen Jan 2010

Efficient Modeling Techniques For Time-Dependent Quantum System With Applications To Carbon Nanotubes, Zuojing Chen

Masters Theses 1911 - February 2014

The famous Moore's law states: Since the invention of the integrated circuit, the number of transistors that can be placed on an integrated circuit has increased exponentially, doubling approximately every two years. As a result of the downscaling of the size of the transistor, quantum effects have become increasingly important while affecting significantly the device performances. Nowadays, at the nanometer scale, inter-atomic interactions and quantum mechanical properties need to be studied extensively. Device and material simulations are important to achieve these goals because they are flexible and less expensive than experiments. They are also important for designing and characterizing new …


A Comparative Guide To The Western States' Public Trust Doctrines: Public Values, Private Rights, And The Evolution Toward An Ecological Public Trust, Robin Kundis Craig Jan 2010

A Comparative Guide To The Western States' Public Trust Doctrines: Public Values, Private Rights, And The Evolution Toward An Ecological Public Trust, Robin Kundis Craig

All In-stream Flows Material

In the arid West, balancing private needs for fresh water to consume against the public values-recreational, aesthetic, and ecological-served by leaving fresh water in situ has tended to favor the private use side. Evidence of this result is both massive and minor, ranging from California's multi-billion-dollar water transportation system,1 to the routine de-watering of the Colorado River so that little to no water reaches the Sea of Cortez,2 to water-related Endangered Species Act lawsuits in dozens of watersheds. 3


Mitigating Misbehavior In Wireless Networks: A Game Theoretic Approach, Wenjing Wang Jan 2010

Mitigating Misbehavior In Wireless Networks: A Game Theoretic Approach, Wenjing Wang

Electronic Theses and Dissertations

In a distributed wireless system, multiple network nodes behave cooperatively towards a common goal. Though such assumptions on cooperation are desirable (e.g., controlling the transmit power level, reducing interference for each other, revealing private information, adhering to network policies) for analyzing and modeling, certain nodes belonging to a real-world system have often shown to deviate. These nodes, known as misbehaving nodes, bring more challenges to the design of the wireless network because the unreliable channel makes the actions of the nodes hidden from each other. In this dissertation, we analyze two types of misbehavior, namely, selfish noncooperation and malicious attacking. …


Influence Of Hydrogen Content On Hot Deformation Behavior And Microstructural Evolution Of Ti600 Alloy, J W. Zhao, H Ding, H L. Hou, Z Q. Li Jan 2010

Influence Of Hydrogen Content On Hot Deformation Behavior And Microstructural Evolution Of Ti600 Alloy, J W. Zhao, H Ding, H L. Hou, Z Q. Li

Faculty of Engineering and Information Sciences - Papers: Part A

Isothermal hot compression tests of a Ti600 alloy after hydrogenation were carried out over the temperature range of 760 to 880℃ and strain rate range of 0.01 to 10 s-1. The influence of hydrogen content was studied on the flow stress and activation energy of deformation. The microstructural changes were examined by transmission electron microscopy (TEM). The results show that the addition of 0.3% hydrogen in Ti600 alloy can decrease the hot deformation temperature by 80 ◦C and increase the deformation strain rate by two orders of magnitude. Both the flow stress and activation energy of deformation of Ti600 alloy …