Browsing Faculty of Arts and Sciences by Title
Now showing items 3166-3185 of 24540
-
Collective atomic scattering and motional effects in a dense coherent medium
(Nature Publishing Group, 2016)We investigate collective emission from coherently driven ultracold 88Sr atoms. We perform two sets of experiments using a strong and weak transition that are insensitive and sensitive, respectively, to atomic motion at 1 ... -
Collective Bargaining Laws, Threat Effects, and the Determination of Police Compensation
(University of Chicago Press, 1989)This article demonstrates that state collective bargaining laws are important determinants of union and nonunion public employee compensation. State laws that provide stronger bargaining rights and ensure closure to the ... -
The Collective Commentary as Reference Genre
(Walter de Gruyter, 2006)The commentary has long been a particularly versatile genre. The continuous commentary on a text is the most widespread and long-lived model, generating ancient scholia, medieval manuscripts displaying a central island of ... -
Collective Construction by Termite-Inspired Robots
(2014-10-21)Construction usually involves careful preplanning and direct human operation of tools and material. Bringing automation to construction has the potential to improve its speed and efficiency, and to enable building in ... -
Collective Cyclotron Motion of the Relativistic Plasma in Graphene
(American Physical Society, 2008)We present a theory of the finite temperature thermoelectric response functions of graphene in the hydrodynamic regime where electron-electron collisions dominate the scattering. In moderate magnetic fields, the Dirac ... -
Collective Decision-Making in Multi-Agent Systems by Implicit Leadership
(Association for Computing Machinery Press, 2010)Coordination within decentralized agent groups frequently requires reaching global consensus, but typical hierarchical approaches to reaching such decisions can be complex, slow, and not fault-tolerant. By contrast, recent ... -
Collective Dynamics from Heterogeneous Interactions in Socioeconomic Networks
(2021-07-12)Understanding the drivers of human behavior is central to uncovering insights into how our social worlds are shaped. Modeling these social dynamics has widespread applications in computational social science such as driving ... -
Collective Dynamics in Physical and Social Networks
(2016-05-03)We study four systems where individual units come together to display a range of collective behavior. First, we consider a physical system of phase oscillators on a network that expands the Kuramoto model to include ... -
The Collective Dynamics of Smoking in a Large Social Network
(Massachusetts Medical Society, 2008)Background: The prevalence of smoking has decreased substantially in the United States over the past 30 years. We examined the extent of the person-to-person spread of smoking behavior and the extent to which groups of ... -
Collective Electronic Phenomena in Layered Metal Oxides: From Static to Dynamic
(2022-01-14)This thesis presents the theoretical, computational and/or experimental studies of the collective electronic phenomena in layered sodium transition-metal oxide (NaTMO2), with the TM being all seven types of 3d-transition ... -
Collective excitations of quasi-two-dimensional trapped dipolar fermions: Transition from collisionless to hydrodynamic regime
(American Physical Society, 2012)We study the collective excitations of polarized single-component quasi-two-dimensional dipolar fermions in an isotropic harmonic trap by solving the collisional Boltzmann-Vlasov (CBV) equation via the method of moments. ... -
Collective generation of milliemulsions by step-emulsification
(Royal Society of Chemistry, 2017)Emulsification is a key step in many processes for the production and functionalization of dispersed liquid systems. Here, we report a versatile and robust device that generates monodisperse milliemulsions by stepemulsification. ... -
Collective Phenomena in Quasi-Two-Dimensional Fermionic Polar Molecules: Band Renormalization and Excitons
(American Physical Society, 2011)We theoretically analyze a quasi-two-dimensional system of fermionic polar molecules in a harmonic transverse confining potential. The renormalized energy bands are calculated by solving the Hartree-Fock equation numerically ... -
Collective States of Non-Abelian Quasiparticles in a Magnetic Field
(American Physical Society, 2009)Motivated by the physics of the Moore-Read nu=1/2 state away from half filling, we investigate collective states of non-Abelian e/4 quasiparticles in a magnetic field. We consider two types of collective states: incompressible ... -
Collective transport of complex objects by simple robots: Theory and experiments
(2013)Ants show an incredible ability to collectively transport complex irregular-shaped objects with seemingly simple coordination. Achieving similarly effective collective transport with robots has potential applications in ... -
Collectively Enhanced Interactions in Solid-State Spin Qubits
(American Physical Society (APS), 2013)We propose and analyze a technique to collectively enhance interactions between solid-state quantum registers composed from random networks of spin qubits. In such systems, disordered dipolar interactions generically result ... -
The Collimated Jet Source in IRAS 16547-4247: Time Variation, Possible Precession, and Upper Limits to the Proper Motions along the Jet Axis
(American Astronomical Society, 2008)The triple radio source detected in association with the luminous infrared source IRAS 16547-4247 has previously been studied with high angular resolution and high sensitivity with the Very Large Array at 3.6 cm wavelength. ... -
Collision-Induced Spin Depolarization of Alkali-metal Atoms in Cold \(^3\)He Gas
(American Physical Society, 2008)We present a joint experimental and theoretical study of spin depolarization in collisions of alkali-metal atoms with \(^3\)He in a magnetic field. A rigorous quantum theory for spin-changing transitions is developed and ...