Now showing items 6855-6874 of 10281

• #### Quantum cascade laser with integrated third order resonant optical nonlinearity ﻿

(2005)
This paper presents a quantum cascade (QC) laser having an active region designed for both pump radiation emission and third order nonlinear emission. This design produces third harmonic generation from an InGaAs/AlInAs ...
• #### Quantum Criticality, Magnetic Frustration, and Unconventional Superconductivity in Heavy Fermion Metals ﻿

(2014-04-24)
Rare earth and actinide metal compounds have emerged as quintessential systems to experimentally and theoretically explore zero temperature quantum phase transitions. These so called heavy fermion metals provide a platform ...

(1969)
• #### Quantum mechanical methods in the electron theory of metals ﻿

(1952)
Abstract Not Available.
• #### Quantum phase transitions in strongly correlated metals ﻿

(2005)
Quantum critical properties of strongly correlated metals in heavy fermion systems are investigated. Based on an extended dynamic mean field theory of the Kondo lattice model, two types of quantum phase transitions are ...
• #### Quantum Plasmonics: A first-principles investigation of metallic nanostructures and their optical properties ﻿

(2012)
The electronic structure and optical properties of metallic nanoparticles are theoretically investigated front first principles. An efficient implementation of time-dependent density functional theory allows a fully quantum ...
• #### Quantum Shot Noise Characteristics in Atomic Scale Junctions at Liquid Nitrogen and Room Temperatures Using Novel Measurement Technique ﻿

(2014-04-24)
Shot noise encodes information not directly inferable from simple electronic transport measurements. Previous measurements in atomic-scale junctions have shown suppression of the shot noise at particular conductance values. ...
• #### Quantum Transport and Microwave Response in Modulated High-Mobility Two-Dimensional Electron Systems ﻿

(2011)
Two-dimensional electron gas (2DEG) in microwave irradiation has been an intriguing system to study transport properties of electrons for a decade, during which extensive important phenomena have been discovered, such as ...
• #### Quantum transport in inverted indium arsenide/gallium antimonide composite quantum wells ﻿

(2010)
We present a comprehensive study of low temperature quantum transport in double gated InAs/GaSb composite quantum wells. Recently, it has been proposed that this system in inverted regime should exhibit the topologically ...
• #### Quantum transport in spatially modulated two-dimensional electron and hole systems ﻿

(2009)
Two-dimensional electron (2DES) and hole (2DHS) systems have attracted intense research attentions in past decades. A 2DES or 2DHS modulated by one-dimensional or two-dimensional spatially periodic potential shows particular ...
• #### Quantum yields and the mechanism of ligand binding to heme proteins ﻿

(1989)
Ligand binding to several naturally occurring and engineered myoglobins and hemoglobins was examined. Overall and germinate rate constants and quantum yields were determined at pH 7, 20$\sp\circ$C for O$\sb2$, NO, CO, and ...
• #### Quantum-mechanical correspondences of regularity and mode-mode specific impulsive energy transfer in the classical dynamics of unimolecular reactions ﻿

(1995)
First, the parameter-dependent zeroth-order basis (PDZOB) method was employed in the study of the quantum mechanical dynamics of a HCN/HNC isomerization model reaction for a few hundred femtoseconds before the time of the ...
• #### Quasi-elastic resonant x-ray scattering ﻿

(1997)
In the fast collision approximation, the scattering amplitude operator of the quasi-elastic scattering is expressed as the summation of multipole moment operators $M\sp{(k)}(l\sb{i},s\sb{i})$ of the valence shell involved ...
• #### Quasi-static study on the fluid and structure interactions of the subsurface safety valves (SSSV) for extreme high pressure and high temperature (XHPHT) applications ﻿

(2010)
This thesis summarizes the preliminary design work of a new subsurface safety valve (SSSV) for extreme high pressure (30,000 psi) and high temperature (450&deg;F) (XHPHT) applications. Current SSSV designs are not reliable ...

(1968)
• #### Query Processing and Optimization for Database Stochastic Analytics ﻿

(2014-12-03)
The application of relational database systems to analytical processing has been an active area of research for about two decades, motivated by constant surges in the scale of the data and in the complexity of the analysis ...
• #### Quilting Faith: African American Quilts as Source Material for Study of African American Religion ﻿

(2015-10-20)
Scholars of African American religion have done well to note the poignant role of cultural productions in the making, doing, and theorizing of religion and life options. Lacking in this discourse is critical attention ...
• #### QUIRE: Lightweight Provenance for Smart Phone Operating Systems ﻿

(2012)
Smartphone applications(apps) often run with full privileges to access the network and sensitive local resources, making it difficult for remote systems to have any trust in the provenance of network connections they ...
• #### Race, conservative politics, and U.S. foreign policy in the postcolonial world, 1948--1968 ﻿

(2008)
This dissertation analyzes the rise of conservatism in American politics from 1948 to 1968, paying special attention to the impact of the civil rights movement and race on postwar political realignments. Unlike previous ...

(1960)