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Now showing items 46265-46284 of 142676
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EXOPLANETARY SPIN-ORBIT ALIGNMENT: RESULTS FROM THE ENSEMBLE OF ROSSITER-MCLAUGHLIN OBSERVATIONS
(American Astronomical Society, 2009-04)One possible diagnostic of planet formation, orbital migration, and tidal evolution is the angle ψ between a planet's orbital axis and the spin axis of its parent star. In general, ψ cannot be measured, but for transiting ... -
Exoplanetary system WASP-3 : measurement of the projected spin-orbit angle and evidence for stellar activity
(Massachusetts Institute of Technology, 2009)In this thesis, I present new spectroscopic and photometric observations of WASP-3, a transiting extrasolar planetary system. From spectra obtained during two transits, I use the Rossiter-McLaughlin effect in a simplified ... -
Exoplanetary Systems in Technicolor
(Massachusetts Institute of Technology, 2023-06)As the number of confirmed extra-solar planets surpasses 5000, our ability to characterize exoplanets has equally advanced in the era of high precision photometry afforded by instruments such as the James Webb Space ... -
ExoplanetSat: Detecting transiting exoplanets using a low-cost CubeSat platform
(SPIE, 2010-07)Nanosatellites, i.e. spacecraft that weigh between 1 and 10 kg, are drawing increasing interest as platforms for conducting on-orbit science. This trend is primarily driven by the ability to piggyback nanosatellites on the ... -
Exoplasmic cysteine Cys384 of the HDL receptor SR-BI is critical for its sensitivity to a small-molecule inhibitor and normal lipid transport activity
(Proceedings of the National Academy of Sciences (PNAS), 2011-07)The HDL receptor, scavenger receptor, class B, type I (SR-BI), is a homooligomeric cell surface glycoprotein that controls HDL structure and metabolism by mediating the cellular selective uptake of lipids, mainly cholesteryl ... -
Exoskeleton energetics: Implications for planetary extravehicular activity
(Institute of Electrical and Electronics Engineers (IEEE), 2017-06)Humans first visited another world nearly 50 years ago and are poised to return to the Moon and visit Mars in the coming decade(s). Developing a space suit that supports safe, efficient, and effective exploration despite ... -
Exoskeleton-covered soft finger with vision-based proprioception and tactile sensing
(IEEE, 2020-05)© 2020 IEEE. Soft robots offer significant advantages in adaptability, safety, and dexterity compared to conventional rigid-body robots. However, it is challenging to equip soft robots with accurate proprioception and ... -
Exoskeletons and orthoses: classification, design challenges and future directions
(BioMed Central Ltd., 2009-06)For over a century, technologists and scientists have actively sought the development of exoskeletons and orthoses designed to augment human economy, strength, and endurance. While there are still many challenges associated ... -
Exoskeletons and orthoses: classification, design challenges and future directions
(BioMed Central Ltd., 2009-06)For over a century, technologists and scientists have actively sought the development of exoskeletons and orthoses designed to augment human economy, strength, and endurance. While there are still many challenges associated ... -
Exoskin : pneumatically augmenting inelastic materials for texture changing interfaces
(Massachusetts Institute of Technology, 2015)Programmable materials have the power to bring to life inert materials in the world around us. Exoskin, provides a way to embed a multitude of static, rigid materials into actuatable, elastic membranes, allowing the new ... -
Exosomes in Cancer Microenvironment and Beyond: have we Overlooked these Extracellular Messengers?
(Springer Netherlands, 2012-05)Cancer is a complex organ whose behavior is not only influenced by genetic and epigenetic changes in cancer cells but also by stromal cells, local extracellular matrix and specific tissue architecture. Intercellular ... -
ExoSpotter: Few Shot Relevance Feedback For Learning High Recall Exoplanet Search
(Massachusetts Institute of Technology, 2024-02)Transit photometry is a widely used method for searching exoplanets. For example, NASA’s Transiting Exoplanet Survey Satellite (TESS) utilizes this technique. However, identifying exoplanet candidates requires significant ... -
Exothermic dark matter
(American Physical Society, 2010-09)We propose a novel mechanism for dark matter to explain the observed annual modulation signal at DAMA/LIBRA which avoids existing constraints from every other dark matter direct detection experiment including CRESST, CDMS, ... -
Exotic Dark Matter in the Early Universe
(Massachusetts Institute of Technology, 2022-09)The fundamental nature of dark matter remains a mystery. As crucial evidence for its existence comes from its effects on early universe observables, perhaps clues to its fundamental nature also reside in its behavior in ... -
Exotic iterated Dehn twists
(Mathematical Sciences Publishers, 2015-01)Consider cotangent bundles of exotic spheres with their canonical symplectic structure. They admit automorphisms that preserve the part at infinity of one fiber and which are analogous to the square of a Dehn twist. Pursuing ... -
Exotic magnetic orderings in the kagome Kondo-lattice model
(American Physical Society, 2014-12)We consider the Kondo-lattice model on the kagome lattice and study its weak-coupling instabilities at band filling fractions for which the Fermi surface has singularities. These singularities include Dirac points, quadratic ... -
Exotic matter on singular divisors in F-theory
(Springer International Publishing AG, 2017-11)We analyze exotic matter representations that arise on singular seven-brane configurations in F-theory. We develop a general framework for analyzing such representations, and work out explicit descriptions for models with ... -
Exotic Mazur manifolds and knot trace invariants
(Elsevier BV, 2021) -
Exotic multiplications on periodic complex bordism
(Wiley, 2020-11) -
Exotic multiplications on periodic complex bordism
(Wiley, 2020-11-04)