Browsing MIT Open Access Articles by Title
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Q&A: Expansion microscopy
(Biomed Central Ltd, 201706)Expansion microscopy (ExM) is a recently invented technology that uses swellable charged polymers, synthesized densely and with appropriate topology throughout a preserved biological specimen, to physically magnify the ... 
QLearning and Enhanced Policy Iteration in Discounted Dynamic Programming
(Institute for Operations Research and the Management Sciences (INFORMS), 201202)We consider the classical finitestate discounted Markovian decision problem, and we introduce a new policy iterationlike algorithm for finding the optimal state costs or Qfactors. The main difference is in the policy ... 
Qlearning and policy iteration algorithms for stochastic shortest path problems
(SpringerVerlag, 201204)We consider the stochastic shortest path problem, a classical finitestate Markovian decision problem with a termination state, and we propose new convergent Qlearning algorithms that combine elements of policy iteration ... 
The qPushASEP: A New Integrable Model for Traffic in 1+1 Dimension
(SpringerVerlag, 201502)We introduce a new interacting (stochastic) particle system qPushASEP which interpolates between the q [italicized q]TASEP of Borodin and Corwin (Probab Theory Relat Fields 158(1–2):225–400, 2014; see also Borodin et ... 
The Q[superscript p][subscript Weak] experiment
(SpringerVerlag, 201302)In May 2012, the Q[superscript p][subscript Weak] collaboration completed a two year measurement program to determine the weak charge of the proton Q[superscript p][subscript Weak] = ( 1  4sin [superscript 2] θ[subscript ... 
QCD axion window and lowscale inflation
(American Physical Society, 201807)We show that the upper bound of the classical QCD axion window can be significantly relaxed for lowscale inflation. If the GibbonsHawking temperature during inflation is lower than the QCD scale, the initial QCD axion ... 
QCD inequalities for hadron interactions
(American Physical Society, 201506)We derive generalizations of the WeingartenWitten QCD mass inequalities for particular multihadron systems. For systems of any number of identical pseudoscalar mesons of maximal isospin, these inequalities prove that near ... 
QCD PRECISION MEASUREMENTS AND STRUCTURE FUNCTION EXTRACTION AT A HIGH STATISTICS, HIGH ENERGY NEUTRINO SCATTERING EXPERIMENT: NuSOnG
(World Scientific, 201001)We extend the physics case for a new highenergy, ultrahigh statistics neutrino scattering experiment, NuSOnG (Neutrino Scattering On Glass) to address a variety of issues including precision QCD measurements, extraction ... 
QED radiative corrections to lowenergy Møller and Bhabha scattering
(American Physical Society, 201608)We present a treatment of the nexttoleadingorder radiative corrections to unpolarized Møller and Bhabha scattering without resorting to ultrarelativistic approximations. We extend existing softphoton radiative corrections ... 
qFibrosis: A fullyquantitative innovative method incorporating histological features to facilitate accurate fibrosis scoring in animal model and chronic hepatitis B patients
(Elsevier, 201402)Background & Aims: There is increasing need for accurate assessment of liver fibrosis/cirrhosis. We aimed to develop qFibrosis, a fullyautomated assessment method combining quantification of histopathological architectural ... 
QLEDs for displays and solidstate lighting
(Cambridge University Press (Materials Research Society), 201309)The mainstream commercialization of colloidal quantum dots (QDs) for lightemitting applications has begun: Sony televisions emitting QDenhanced colors are now on sale. The bright and uniquely sizetunable colors of ... 
QnAs with Susan L. Lindquist
(National Academy of Sciences of the United States of America, 201111)Prions defy molecular biology’s central dogma. Misfolded proteins that selfperpetuate, prions were first isolated in the early 1980s as the cause of a fatal sheep disease called scrapie. Since then, prions have been ... 
qSR: a quantitative superresolution analysis tool reveals the cellcycle dependent organization of RNA Polymerase I in live human cells
(Nature Publishing Group, 201805)We present qSR, an analytical tool for the quantitative analysis of single molecule based superresolution data. The software is created as an opensource platform integrating multiple algorithms for rigorous spatial and ... 
A Quadratic RegulatorBased Heuristic for Rapidly Exploring State Space
(Institute of Electrical and Electronics Engineers (IEEE), 201007)Kinodynamic planning algorithms like RapidlyExploring Randomized Trees (RRTs) hold the promise of finding feasible trajectories for rich dynamical systems with complex, nonconvex constraints. In practice, these algorithms ... 
Quadristability of a spatially ambiguous auditory illusion
(Frontiers Research Foundation, 201501)In addition to vision, audition plays an important role in sound localization in our world. One way we estimate the motion of an auditory object moving towards or away from us is from changes in volume intensity. However, ... 
Quadruped Bounding Control with Variable Duty Cycle via Vertical Impulse Scaling
(Institute of Electrical and Electronics Engineers (IEEE), 201409)This paper introduces a bounding gait control algorithm that allows a successful implementation of duty cycle modulation in the MIT Cheetah 2. Instead of controlling leg stiffness to emulate a ‘springy leg’ inspired from ... 
Qualitative investigation of theoretical models: the value of process tracing
(Sage Publications, 201608)Political scientists frequently use qualitative evidence to support or evaluate the empirical applicability of formal models. Despite this widespread practice, neither the qualitative methods literature nor research on ... 
Qualitative properties of αfair policies in bandwidthsharing networks
(Institute of Mathematical Statistics, 201402)We consider a flowlevel model of a network operating under an αfair bandwidth sharing policy (with α > 0) proposed by Roberts and Massoulié [Telecomunication Systems 15 (2000) 185–201]. This is a probabilistic model that ... 
Qualitative properties of αweighted scheduling policies
(Association for Computing Machinery, 201006)We consider a switched network, a fairly general constrained queueing network model that has been used successfully to model the detailed packetlevel dynamics in communication networks, such as inputqueued switches ... 
Qualitatively Different T Cell Phenotypic Responses to IL2 versus IL15 Are Unified by Identical Dependences on Receptor Signal Strength and Duration
(American Association of Immunologists, 201312)IL2 and IL15 are common γchain family cytokines involved in regulation of T cell differentiation and homeostasis. Despite signaling through the same receptors, IL2 and IL15 have nonredundant roles in T cell biology, ...