klaurent – Page 868 – Kavli Institute Pre-Print Publications

Robust Model Predictive Control of Irrigation Systems with Active Uncertainty Learning and Data Analytics

Posted by klaurent October 14, 2018Cornell

Kavli Affiliate: Abraham Stroock | Summary:We develop a novel data-driven robust model predictive control (DDRMPC) approach for automatic control of irrigation systems. The fundamental idea is to integrate both mechanistic models, which describe dynamics in soil moisture variations, and data-driven models, which characterize uncertainty in forecast errors of evapotranspiration and precipitation, into a holistic systems […]

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Robust Model Predictive Control of Irrigation Systems with Active Uncertainty Learning and Data Analytics

Posted by klaurent October 14, 2018Cornell

Kavli Affiliate: Abraham Duncan Stroock | First 5 Authors: Chao Shang, Wei-Han Chen, Abraham Duncan Stroock, Fengqi You, | Summary: We develop a novel data-driven robust model predictive control (DDRMPC) approach for automatic control of irrigation systems. The fundamental idea is to integrate both mechanistic models, which describe dynamics in soil moisture variations, and data-driven […]

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Gravitationally lensed quasars in Gaia: III. 22 new lensed quasars from Gaia Data Release 2

Posted by klaurent October 10, 2018Cambridge

Kavli Affiliate: R. G. McMahon | Summary:We report the discovery and spectroscopic confirmation of 22 new gravitationally lensed quasars found using $textitGaia$ data release 2. The selection was made using several techniques: multiple $textitGaia$ detections around objects in quasar candidate catalogues, modelling of unWISE coadd pixels using $textitGaia$ astrometry, and $textitGaia$ detections offset from photometric […]

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Towards geometric Satake correspondence for Kac-Moody algebras — Cherkis bow varieties and affine Lie algebras of type $A$

Posted by klaurent October 9, 2018Tokyo

Kavli Affiliate: Hiraku Nakajima | Summary:We give a provisional construction of the Kac-Moody Lie algebra module structure on the hyperbolic restriction of the intersection cohomology complex of the Coulomb branch of a framed quiver gauge theory, as a refinement of the conjectural geometric Satake correspondence for Kac-Moody algebras proposed in an earlier paper with Braverman, […]

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Disentangling lattice and electronic contributions to the metal-insulator transition from bulk vs. layer confined RNiO$_3$

Posted by klaurent September 30, 2018Cornell

Kavli Affiliate: Ankit Disa | Summary:In complex oxide materials, changes in electronic properties are often associated with changes in crystal structure, raising the question of the relative roles of the electronic and lattice effects in driving the metal-insulator transition. This paper presents a combined theoretical and experimental analysis of the dependence of the metal-insulator transition […]

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Diffraction limited centimeter scale radiator: metasurface grating antenna for phased array LiDAR

Posted by klaurent September 28, 2018UCSB

Kavli Affiliate: Larry Coldren | Summary:In this paper, we demonstrate a radiation-strength-chirped metasurface centimeter-long grating antenna, whose beam quality is approaching the diffraction limit in its footprint with 90 percent efficiency.Instead of chirping the duty cycle to tune radiation strength, which calls for non-scalable fabrication resolution, we design a 2D fish-bone surface grating with apodized […]

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Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data

Posted by klaurent September 24, 2018Tokyo

Kavli Affiliate: Hiroaki Aihara | Summary:We measure cosmic weak lensing shear power spectra with the Subaru Hyper Suprime-Cam (HSC) survey first-year shear catalog covering 137deg$^2$ of the sky. Thanks to the high effective galaxy number density of $sim$17 arcmin$^-2$ even after conservative cuts such as magnitude cut of $i<24.5$ and photometric redshift cut of $0.3leq […]

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On the Origin of the Two-Dimensional Electron Gas at the CdO (100) Surface

Posted by klaurent September 21, 2018Caltech

Kavli Affiliate: Nathan Lewis | Summary:Synchrotron-radiation angle-resolved and core-level photoemission spectroscopy are used together to investigate the origin of the two-dimensional electron gas on the surface of single crystal CdO (100) films. A reduction in the two-dimensional electron density of the surface state is observed under the synchrotron beam during ARPES, which is shown to […]

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Enhanced oxygen solubility in metastable water under tension

Posted by klaurent September 18, 2018Cornell

Kavli Affiliate: Warren R. Zipfel | Summary:Despite its relevance in numerous natural and industrial processes, the solubility of molecular oxygen has never been directly measured in capillary condensed liquid water. In this article, we measure oxygen solubility in liquid water trapped within nanoporous samples, in metastable equilibrium with a subsaturated vapor. We show that solubility […]

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Highly-multiplexed microwave SQUID readout using the SLAC Microresonator Radio Frequency (SMuRF) Electronics for Future CMB and Sub-millimeter Surveys

Posted by klaurent September 11, 2018Stanford

Kavli Affiliate: Ethan Karpel | Summary:The next generation of cryogenic CMB and submillimeter cameras under development require densely instrumented sensor arrays to meet their science goals. The readout of large numbers ($sim$10,000–100,000 per camera) of sub-Kelvin sensors, for instance as proposed for the CMB-S4 experiment, will require substantial improvements in cold and warm readout techniques. […]

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