Browsing MIT Open Access Articles by Title
Now showing items 1474-1493 of 55750
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Alleviating label switching with optimal transport
(2019-12)© 2019 Neural information processing systems foundation. All rights reserved. Label switching is a phenomenon arising in mixture model posterior inference that prevents one from meaningfully assessing posterior statistics ... -
Alleviating label switching with optimal transport
(2019-12)© 2019 Neural information processing systems foundation. All rights reserved. Label switching is a phenomenon arising in mixture model posterior inference that prevents one from meaningfully assessing posterior statistics ... -
Allocating Power and Bandwidth in Multibeam Satellite Systems using Particle Swarm Optimization
(IEEE, 2020-03)© 2020 IEEE. In recent years, communications satellites' payloads have been evolving from static to highly flexible components. Modern satellites are able to provide four orders of magnitude higher throughput than their ... -
Allocating Students to Multidisciplinary Capstone Projects Using Discrete Optimization
(Institute for Operations Research and the Management Sciences (INFORMS), 2018-05)We discuss an allocation mechanism of capstone projects to senior-year undergraduate students, which the recently established Singapore University of Technology and Design (SUTD) has implemented. A distinguishing feature ... -
Allocation of Airspace Cutouts to Enable Procedurally Separated Small Aircraft Operations in Terminal Areas
(American Institute of Aeronautics and Astronautics, 2020-06)The current air traffic control (ATC) system is human-centric and voice-based. As a result, separation minima, controller workload, and radio frequency limitations may restrict the number of emerging unmanned aircraft ... -
The Allocation of Future Business: Dynamic Relational Contracts with Multiple Agents
(American Economic Association, 2016-09)We consider how a firm dynamically allocates business among several suppliers to motivate them in a relational contract. The firm chooses one supplier who exerts private effort. Output is non-contractible, and each supplier ... -
Allosteric activation of apicomplexan calcium-dependent protein kinases
(National Academy of Sciences (U.S.), 2015-09)Calcium-dependent protein kinases (CDPKs) comprise the major group of Ca[superscript 2+]-regulated kinases in plants and protists. It has long been assumed that CDPKs are activated, like other Ca[superscript 2+]-regulated ... -
Allosteric Inhibition of Human Ribonucleotide Reductase by dATP Entails the Stabilization of a Hexamer
(American Chemical Society (ACS), 2015-12)Ribonucleotide reductases (RNRs) are responsible for all de novo biosynthesis of DNA precursors in nature by catalyzing the conversion of ribonucleotides to deoxyribonucleotides. Because of its essential role in cell ... -
Allosteric pyruvate kinase-based “logic gate” synergistically senses energy and sugar levels in Mycobacterium tuberculosis
(Nature Publishing Group, 2017-12)Pyruvate kinase (PYK) is an essential glycolytic enzyme that controls glycolytic flux and is critical for ATP production in all organisms, with tight regulation by multiple metabolites. Yet the allosteric mechanisms governing ... -
Allosteric regulation of DegS protease subunits through a shared energy landscape
(Nature Publishing Group, 2012-12)The PDZ domains of the trimeric DegS protease bind unassembled outer-membrane proteins (OMPs) that accumulate in the Escherichia coli periplasm. This cooperative binding reaction triggers a proteolytic cascade that activates ... -
Allotaxonometry and rank-turbulence divergence: a universal instrument for comparing complex systems
(Springer Berlin Heidelberg, 2023-09-19)Abstract Complex systems often comprise many kinds of components which vary over many orders of magnitude in size: Populations of cities in countries, individual and corporate wealth in economies, species ... -
Allowing non-submodular score functions in distributed task allocation
(Institute of Electrical and Electronics Engineers (IEEE), 2012-12)Submodularity is a powerful property that can be exploited for provable performance and convergence guarantees in distributed task allocation algorithms. However, some mission scenarios cannot easily be approximated as ... -
Alloy*: a general-purpose higher-order relational constraint solver
(Springer Science and Business Media LLC, 2019)© 2017, Springer Science+Business Media New York. The last decade has seen a dramatic growth in the use of constraint solvers as a computational mechanism, not only for analysis of software, but also at runtime. Solvers ... -
Alloy*: A General-Purpose Higher-Order Relational Constraint Solver
(Institute of Electrical and Electronics Engineers (IEEE), 2015-08)The last decade has seen a dramatic growth in the use of constraint solvers as a computational mechanism, not only for analysis of software, but also at runtime. Solvers are available for a variety of logics but are generally ... -
Alloy: a language and tool for exploring software designs
(Association for Computing Machinery (ACM), 2019-09)Alloy is A language and a toolkit for exploring the kinds of structures that arise in many software designs. This article aims to give readers a flavor of Alloy in action, and some examples of its applications to date, ... -
Allysine modifications perturb tropoelastin structure and mobility on a local and global scale
(Elsevier BV, 2019-05)Elastin provides elastic tissues with resilience through stretch and recoil cycles, and is primarily made of itsextensively cross-linked monomer, tropoelastin. Here, we leverage the recently published full atomistic modelof ... -
ALMA Observations of Gas-rich Galaxies in z ~ 1.6 Galaxy Clusters: Evidence for Higher Gas Fractions in High-density Environments
(IOP Publishing, 2017-06)We present ALMA CO (2-1) detections in 11 gas-rich cluster galaxies at z ∼ 1.6, constituting the largest sample of molecular gas measurements in z > 1.5 clusters to date. The observations span three galaxy clusters, ... -
Alma Observations of Massive Molecular Gas Filaments Encasing Radio Bubbles in the Phoenix Cluster
(IOP Publishing, 2017-02)