Browsing MIT Open Access Articles by Title
Now showing items 6923-6942 of 55789
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Collision-Free Reactive Mission and Motion Planning for Multi-robot Systems
(Springer International Publishing, 2017-07-27)This paper describes a holistic method for automatically synthesizing controllers for a team of robots operating in an environment shared with other agents. The proposed approach builds on recent advances in Reactive Mission ... -
Collision-free state estimation
(Institute of Electrical and Electronics Engineers (IEEE), 2012-05)In state estimation, we often want the maximum likelihood estimate of the current state. For the commonly used joint multivariate Gaussian distribution over the state space, this can be efficiently found using a Kalman ... -
Collision-geometry fluctuations and triangular flow in heavy-ion collisions
(American Physical Society, 2010-05)We introduce the concepts of participant triangularity and triangular flow in heavy-ion collisions, analogous to the definitions of participant eccentricity and elliptic flow. The participant triangularity characterizes ... -
Collisional cooling of ultracold molecules
(Springer Science and Business Media LLC, 2020-04)Since the original work on Bose–Einstein condensation1,2, the use of quantum degenerate gases of atoms has enabled the quantum emulation of important systems in condensed matter and nuclear physics, as well as the study ... -
Collisional effects on nonlinear ion drag force for small grains
(American Institute of Physics (AIP), 2013-08)The ion drag force arising from plasma flow past an embedded spherical grain is calculated self-consistently and non-linearly using particle in cell codes, accounting for ion-neutral collisions. Using ion velocity distribution ... -
Collisional Excitation and Non-LTE Modeling of Interstellar Chiral Propylene Oxide
(American Astronomical Society, 2022-02-01)The first set of theoretical rotational cross sections for propylene oxide (CH3CHCH2O) colliding with cold He atoms has been obtained at the full quantum level using a high-accuracy potential energy surface. By scaling the ... -
Collisionless Reconnection in Magnetohydrodynamic and Kinetic Turbulence
(American Astronomical Society, 2017-12)It has recently been proposed that the inertial interval in magnetohydrodynamic (MHD) turbulence is terminated at small scales not by a Kolmogorov-like dissipation region, but rather by a new sub-inertial interval mediated ... -
Colloidal CdSe nanocrystals are inherently defective
(Springer Science and Business Media LLC, 2021)© 2021, The Author(s). Colloidal CdSe nanocrystals (NCs) have shown promise in applications ranging from LED displays to medical imaging. Their unique photophysics depend sensitively on the presence or absence of surface ... -
Colloidal gel elasticity arises from the packing of locally glassy clusters
(Springer Science and Business Media LLC, 2019-05)Colloidal gels formed by arrested phase separation are found widely in agriculture, biotechnology, and advanced manufacturing; yet, the emergence of elasticity and the nature of the arrested state in these abundant materials ... -
Colloidal nano-MOFs nucleate and stabilize ultra-small quantum dots of lead bromide perovskites
(Royal Society of Chemistry (RSC), 2021)<p>We demonstrate a simple and effective host–guest strategy for preparing ultra-small lead bromide perovskite QDs through the use of nano-sized MOFs that function as nucleating and host sites.</p> -
Colloidal quantum dot light-emitting devices
(Informa UK Limited, 2010)Colloidal quantum dot light-emitting devices (QD-LEDs) have generated considerable interest for applications such as thin film displays with improved color saturation and white lighting with a high color rendering index ... -
Colloidal quasi-one-dimensional dual semiconductor core/shell nanorod couple heterostructures with blue fluorescence
(Royal Society of Chemistry (RSC), 2019)© 2019 The Royal Society of Chemistry. Herein we report a nanorod couple heterostructure made of dual semiconductors, in which two parallelly aligned ZnSe nanorods are connected by the growth of ZnS on both end and side ... -
Colloidal quasi-one-dimensional dual semiconductor core/shell nanorod couple heterostructures with blue fluorescence
(Royal Society of Chemistry (RSC), 2019)© 2019 The Royal Society of Chemistry. Herein we report a nanorod couple heterostructure made of dual semiconductors, in which two parallelly aligned ZnSe nanorods are connected by the growth of ZnS on both end and side ... -
Colloquium: Failure of molecules, bones, and the Earth itself
(American Physical Society, 2010-05)Materials fail by recurring rupture and shearing of interatomic bonds at microscopic, molecular scales, leading to disintegration of matter at macroscale and a loss of function. In this Colloquium, the state-of-the-art of ... -
Colloquium: Measuring the neutron star equation of state using x-ray timing
(American Physical Society (APS), 2016-04)One of the primary science goals of the next generation of hard x-ray timing instruments is to determine the equation of state of matter at supranuclear densities inside neutron stars by measuring the radius of neutron ... -
Colloquium: Zoo of quantum-topological phases of matter
(American Physical Society (APS), 2017-12)What are topological phases of matter? First, they are phases of matter at zero temperature. Second, they have a nonzero energy gap for the excitations above the ground state. Third, they are disordered liquids that seem ... -
Collusion by Algorithm: Does Better Demand Prediction Facilitate Coordination Between Sellers?
(Institute for Operations Research and the Management Sciences (INFORMS), 2019)© 2019 INFORMS. We build a game-theoretic model to examine how better demand forecasting resulting from algorithms, machine learning, and artificial intelligence affects the sustainability of collusion in an industry. We ... -
Collusion Resistant Federated Learning with Oblivious Distributed Differential Privacy
(ACM|3rd ACM International Conference on AI in Finance, 2022-11-02) -
Collusion, efficiency, and dominant strategies
(Elsevier BV, 2017)© 2016 The Authors Green and Laffont proved that no collusion-resilient dominant-strategy mechanism, whose strategies consist of individual valuations, guarantees efficiency in multi-unit auctions. Chen and Micali bypassed ... -
Collusive dominant-strategy truthfulness
(Elsevier, 2012-01)We show that collusion and wrong beliefs may cause a dramatic efficiency loss in the Vickrey mechanism for auctioning a single good in limited supply. We thus put forward a new mechanism guaranteeing efficiency in a very ...
