Browsing FAS Scholarly Articles by Title
Now showing items 2326-2345 of 18296
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A cold and slow molecular beam
(Royal Society of Chemistry (RSC), 2011)Employing a two-stage cryogenic buffer gas cell, we produce a cold, hydrodynamically extracted beam of calcium monohydride molecules with a near effusive velocity distribution. Beam dynamics, thermalization and slowing are ... -
Cold fronts by merging of shocks
(Oxford University Press, 2010)Cold fronts (CFs) are found in most galaxy clusters, as well as in some galaxies and groups of galaxies. We propose that some CFs are relics of merging between two shocks propagating in the same direction. Such shock mergers ... -
Cold Heteromolecular Dipolar Collisions
(Royal Society of Chemistry, 2011)Cold molecules promise to reveal a rich set of novel collision dynamics in the low-energy regime. By combining for the first time the techniques of Stark deceleration, magnetic trapping, and cryogenic buffer gas cooling, ... -
Cold N + NH Collisions in a Magnetic Trap
(American Physical Society, 2011)We present an experimental and theoretical study of atom-molecule collisions in a mixture of cold, trapped N atoms and NH molecules at a temperature of ∼600 mK. We measure a small N + NH trap loss rate coefficient of ... -
Cold, Optically Dense Samples of Atomic Rubidium
(Institute of Physics, 2011)Cold and optically dense gases of atomic rubidium are produced using buffer gas cooling in combination with rapid, high-flow vapor injection. The observed rubidium density is 3 × 10\(^{12}\)cm\(^{−3}\) at a gas temperature ... -
A cold-atom Fermi–Hubbard antiferromagnet
(Springer Nature, 2017)Exotic phenomena in strongly correlated electron systems emerge from the interplay between spin and motional degrees of freedom. For example, doping an antiferromagnet is expected to give rise to pseudogap states and ... -
Coleochaete and the origin of sporophytes
(Botanical Society of America, 2015)Premise of the study: Zygotes of Coleochaete are provisioned by the maternal thallus before undergoing 3–5 rounds of division to produce 8–32 zoospores. An understanding of the selective forces favoring postzygotic divisions ... -
Coleridge (and his Mariner) on the Soul: As an Exile in a Far Distant Land
(Fordham University Press, 2002) -
Coleridge, Johnson, and Shakespeare: A Critical Drama in Five Acts
(Edinburgh University Press, 1998) -
Colin McPhee: A Composer Turned Explorer
(Cambridge University Press, 1984) -
Collaborating with People Like Me: Ethnic Coauthorship within the United States
(University of Chicago Press, 2015)By examining the ethnic identity of authors in over 2.5 million scientific papers written by US-based authors from 1985 to 2008, we find that persons of similar ethnicity coauthor together more frequently than predicted ... -
Collaboration encourages equal sharing in children but not in chimpanzees
(Nature Publishing Group, 2011)Humans actively share resources with one another to a much greater degree than do other great apes, and much human sharing is governed by social norms of fairness and equity. When in receipt of a windfall of resources, ... -
Collaboration: Strength in diversity
(Nature Publishing Group, 2014) -
Collaborative Compressive Spectrum Sensing in a UAV Environment
(Institute of Electrical and Electronics Engineers, 2011)Spectrum sensing is of fundamental importance to many wireless applications including cognitive radio channel assignment and radiolocation. However, conventional spectrum sensing can be prohibitively expensive in computation ... -
Collaborative Health Care Plan Support
(ACM, 2013)This paper envisions a multi-agent system that assists patients and their health care providers. This system would support a diverse, evolving team in formulating, monitoring and revising a shared "care plan" that operates ... -
Collaborative partner or social tool? New evidence for young children’s understanding of joint intentions in collaborative activities
(Wiley-Blackwell, 2011)Some children’s social activities are structured by joint goals. In previous research, the criterion used to determine this was relatively weak: if the partner stopped interacting, did the child attempt to re-engage her? ... -
Collaborative Plans for Complex Group Action
(Elsevier, 1996)The original formulation of SharedPlans by B. Grosz and C. Sidner (1990) was developed to provide a model of collaborative planning in which it was not necessary for one agent to have intentions-to toward an act of a ... -
Collapse and Folding of Pressurized Rings in Two Dimensions
(American Physical Society, 2009)Hydrostatically pressurized circular rings confined to two dimensions (or cylinders constrained to have only z-independent deformations) undergo Euler-type buckling when the outside pressure exceeds a critical value. We ...