Browsing Faculty of Arts and Sciences by Title
Now showing items 12444-12463 of 24543
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Low-radiative-efficiency accretion in the nuclei of elliptical galaxies
(Oxford University Press, 2000)The discovery of hard X-ray emission from a sample of six nearby elliptical galaxies, including the dominant galaxies of the Virgo, Fornax and Centaurus clusters (M87, NGC 1399 and NGC 4696, respectively), and NGC 4472, ... -
Low-Resolution Statistical Modeling With Belief Functions
(2018-05-11)This dissertation addresses problems in the theoretical, methodological, and computational aspects of statistical modeling in the presence of low-resolution information. I consider a structural kind of model uncertainty ... -
Low-temperature homoepitaxial growth on Si(111) mediated by thin overlayers of Au
(AIP Publishing, 1994)High quality homoepitaxialgrowth of Si on Si(111) through an overlayer of Au is shown to occur at 450–500 °C, far below the temperature required for growth of Si of similar quality on bare Si(111). Films of unlimited ... -
Low-temperature homoepitaxial growth on Si(111) through a Pb monolayer
(AIP Publishing, 1998)A monolayer of Pb mediates high-quality homoepitaxialgrowth on Si (111) surfaces at temperatures where growth with other overlayer elements or on bare surfaces leads to amorphous or highly defective crystalline films. ... -
Low-Temperature Quasiparticle Transport in a D-Wave Superconductor with Coexisting Charge Order
(American Physical Society, 2009)In light of the evidence that charge order coexists with \(d\)-wave superconductivity in the underdoped cuprate superconductors, we investigate the manner in which such charge order will influence the quasiparticle excitations ... -
Low-temperature synthesis of nanoscale silica multilayers – atomic layer deposition in a test tube
(Royal Society of Chemistry (RSC), 2010)Herein we demonstrate a simplified, ‘poor-man's’ form of the Atomic Layer Deposition (ALD) technique to grow uniform silica multilayers onto hydrophilic surfaces at low temperatures, including room temperature (RT). ... -
Low-Temperature Synthesis of Ultra-High-Temperature Coatings of ZrB 2 Using Reactive Multilayers
(American Chemical Society (ACS), 2014)We demonstrate a route to synthesize ultra-high-temperature ceramic coatings of ZrB2 at temperatures below 1300 K using Zr/B reactive multilayers. Highly textured crystalline ZrB2 is formed at modest temperatures because ... -
Low-threshold continuous-wave operation of quantum-cascade lasers grown by metalorganic vapor phase epitaxy
(AIP Publishing, 2004)We report on the realization of InGaAs/InAlAs quantum-cascade lasers grown by metalorganic vapor phase epitaxy operating in continuous wave with low-threshold current densities at temperatures as high as 188 K. Threshold ... -
Low-Threshold Indium Gallium Nitride Quantum Dot Microcavity Lasers
(2014-11-21)Gallium nitride (GaN) microcavities with embedded optical emitters have long been sought after as visible light sources as well as platforms for cavity quantum electrodynamics (cavity QED) experiments. Specifically, materials ... -
The Lowells of Boston and the Founding of University Extension at Harvard
(Ohio State University, Office of Continuing Education, 2009) -
A Lower Bound on Expected Communication Cost of Quantum State Redistribution
(2015-10-05)We show a lower bound on expected communication cost of interactive entanglement assisted quantum state redistribution protocols and a slightly better lower bound for its special case, quantum state transfer. Our bound ... -
A Lower Bound on List Size for List Decoding
(Institute of Electrical & Electronics Engineers (IEEE), 2010)A q-ary error-correcting code C ⊆ {1,2,...,q}n is said to be list decodable to radius ρ with list size L if every Hamming ball of radius ρ contains at most L codewords of C. We prove that in order for a q -ary code to be ... -
Lower Bound on the Blow-up Rate of the Axisymmetric Navier-Stokes Equations
(Oxford University Press (OUP), 2010)Consider axisymmetric strong solutions of the incompressible Navier-Stokes equations in R 3 with non-trivial swirl. Such solutions are not known to be globally defined, but it is shown in [11, 1] that they could only blow ... -
A lower bound on the crossing number of uniform hypergraphs
(Elsevier BV, 2016-08)In this paper, we consider the embedding of a complete d-uniform geometric hypergraph with n vertices in general position in ℝd, where each hyperedge is represented as a (d−1)-simplex, and a pair of hyperedges is defined ... -
A Lower Bound on the Ground State Energy of Dilute Bose Gas
(American Institute of Physics, 2010)Consider an N-Boson system interacting via a two-body repulsive short-range potential \({V}\) in a three dimensional box \({\Lambda}\) of side length \({L}\). We take the limit \({N}\), \({L}\) \({\rightarrow}\) \({\infty}\) ... -
Lower Bounds for Oblivious Subspace Embeddings
(Springer, 2014)An oblivious subspace embedding (OSE) for some \(\epsilon\),\(\delta \in (0,1/3)\) and d ≤ m ≤ n is a distribution \(\mathcal{D}\) over \(\mathbb{R}^{m×n}\) such that \(\underset {\Pi \sim \mathcal{D}} {Pr} (\forall x \in ... -
Lower Bounds on the Blow-Up Rate of the Axisymmetric Navier–Stokes Equations II
(Informa UK Limited, 2009)Consider axisymmetric strong solutions of the incompressible Navier–Stokes equations in ℝ3 with non-trivial swirl. Let z denote the axis of symmetry and r measure the distance to the z-axis. Suppose the solution satisfies, ... -
Lower-Limb Muscle Function Is Influenced by Changing Mechanical Demands in Cycling
(The Company of Biologists, 2020-12-29)Although cycling is often considered a seemingly simple, reciprocal task, muscles must adapt their function to satisfy changes in mechanical demands induced by higher crank torques and faster pedalling cadences. We examined ... -
Low’s Subleading Soft Theorem as a Symmetry of QED
(American Physical Society (APS), 2014)It was shown by F. Low in the 1950s that the subleading terms of soft photon S-matrix elements obey a universal linear relation. In this paper we give a new interpretation to this old relation, for the case of massless ... -
Lpt-protein dynamics reveal that Lipopolysaccharide promotes trans-envelope bridge formation
(2022-09-09)Gram-negative bacteria have two lipid bilayers, the inner membrane and the outer membrane as part of their cell envelope structure.1 A special feature of the outer layer is its asymmetric membrane structure, comprised of ...