149 Works

New Cophasing and AO strategies for an extremely large telescope dedicated to extremely high contrast: The Colossus Project

Gilles Moretto, Jeff R. Kuhn, Maud Langlois, Michel Tallon, Eric Thiebaut, Svetlana Berdyugina & David Halliday

Analysis of GeMS tip-tilt on-sky data: LQG implementation for vibration rejections

Lucie Leboulleux, Gaetano Sivo, Rémy Juvenal, Caroline Kulcsár, Vincent Garrel, Jean-Marc Conan, Henri-François Raynaud, Cyril Petit, William Rambold, Eduardo Marin, Vanessa Montes & Chadwick Trujillo

Resolving the low-mass content of Westerlund 1 using MCAO

Morten Andersen, Benoit Neichel & Anais Bernard

Optical design of the Post Focal Relay of MAORY

Matteo Lombini, Emiliano Diolaiti & Adriano De Rosa

Measuring Segment Piston with a Non-Redundant Pupil Mask on the Giant Magellan Telescope

Marcos Van Dam, Peter Tuthill & Anthony Cheetham

Near-infrared tip-tilt sensing at Keck: System architecture and on-sky performance

Rachel Rampy, Bruno Femenia, Jim Lyke, Peter Wizinowich, Sylvain Cetre, Sam Ragland & Paul Stomski

Observations of the dynamic turbulence above La Palma using Stereo-SCIDAR

James Osborn, Timothy Butterley, Saavidra Perera, Dora Fohring & Richard Wilson

Preliminary performance analysis of a LGS system for GTC

Iciar Montilla, Marcos Reyes Garcia-Talavera & Dolores Bello

Non Boltzmann Modeling of Sodium Guidestar Returns and Implications for Guidestar Linewidth

Shawn Hackett & Robert Johnson

State of the art IR cameras for wavefront sensing using e-APD MCT arrays

Pilippe Feautrier & Jean-Luc Gach

Anti-aliasing wave-front reconstruction with Shack-Hartmann sensors

Charlotte Bond, Thierry Fusco, Carlos Correia, JeanPierre Veran & Joel Telxeira

Coupling of WFS with a segmented DM “Test of different concepts: SH, Pyramid, Zernike phase sensor”

Nicolas Galland, Kacem El Hadi, Kjetil Dohlen, Jean-Francoiss Sauvage, Thierry Fusco, Franck Marchis & Mamadou N'Diaye

Laboratory tests on HeNOS, the MCAO test bench for NFIRAOS

Matthias Rosensteiner, Paolo Turri, David Andersen, Paolo Spano & Glen Herriot

Optical calibration of the M4 prototype toward the final unit

Runa Briguglio, Giorgio Pariani, Marco Xompero, Armando Riccardi, Mario Adrighettoni, Roberto Biasi, Matteo Tinori & Daniele Gallieni

Coastal Wetlands and Flood Damage Reduction: Using Risk Industry-based Models to Assess Natural Defenses in the Northeastern USA

S. Narayan, M. W. Beck, P. Wilson, C. Thomas, A. Guerrero, C. Shepard, B. G. Reguero, G. Franco, C. J. Ingram & D. Trespalacios

D-raising in Chamorro relative clauses and other A′ constructions

Jake Wayne Vincent

Natural enemy-herbivore networks along local management and landscape gradients in urban agroecosystems

Stacy Philpott, Azucena Lucatero, Peter Bichier, Monika Egerer, Shalene Jha, Brenda Lin & Heidi Liere
Ecological networks can provide insight into how biodiversity loss and changes in species interactions impact the delivery of ecosystem services. In agroecosystems that vary in management practices, quantifying changes in ecological network structure across gradients of local and landscape composition can inform both the ecology and function of productive agroecosystems. In this study, we examined natural enemy-herbivore co-occurrence networks associated with Brassica oleracea (cole crops), a common crop in urban agricultural systems. Specifically, we investigated...

Pluto and Charon limb profile topography

Jack Conrad
We derived updated and expanded topography datasets for Pluto and Charon. This is done through finding the body edge (i.e. the limb) in images, and with those body edge locations we can apply simple geographical techniques to produce limb profiles. The process involves some human intervention, but is primarily automation based. Our limb profile topography is useful for geologic and geophysical studies of Pluto and Charon. Additionally, we provide processed data of how we used...

Año Nuevo Island Animal Count: analyzing citizen science pinniped counts from drone imagery

Sarah Wood
Fluctuations in marine mammal abundance can reveal changes in local ecosystem health and inform conservation strategies. Unmanned aircraft systems (UAS) such as drones are increasingly being used to photograph and count marine mammals in remote locations; however, counting animals in images is a laborious task. Crowd-sourced science has the potential to considerably reduce the time required to conduct these censuses but must first be validated against expert counts to confirm accuracy. Our objectives were to...

Physical and biogeochemical drivers of alongshore pH and oxygen variability in the California Current System

Jerome Fiechter & Julia Cheresh
In the California Current System (CCS), the nearshore environment experiences natural exposure to low pH and reduced oxygen in response to coastal upwelling. Anthropogenic impacts further decrease pH and oxygen below biological thresholds, making the CCS particularly vulnerable to ocean acidification and hypoxia. Results from a coupled physical-biogeochemical model reveal a strongly heterogeneous alongshore pattern of nearshore pH and oxygen in the central CCS, both in their long-term means and trends. This spatial structuring is...

Financing Natural Infrastructure for Coastal Flood Damage Reduction

Runoff modeling of a coastal basin to assess variations in response to shifting climate and land use: Implications for managed recharge

Sarah Beganskas, Kyle Young, Andrew Fisher, Ryan Harmon & Sacha Lozano
We quantified hillslope runoff distribution in a coastal, mixed-use basin, the Pajaro Valley Drainage Basin (PVDB), under different climate and land use conditions, evaluating the potential for distributed stormwater collection coupled with managed aquifer recharge (DSC-MAR) to improve groundwater supply. We developed dry, normal, and wet climate scenarios using historic precipitation and temperature data, and we compared contemporary land use to pre-development land use by replacing developed areas in the model with plausible native vegetation...

Chemical shift-based methods in NMR structure determination

Santrupti Nerli, Andrew C. McShan & Nikolaos G. Sgourakis
Chemical shifts are highly sensitive probes that can be harnessed by NMR spectroscopists and structural biologists as conformational parameters to characterize a range of biological molecules. Traditionally, assignment of chemical shifts has been a labor-intensive process requiring numerous samples and a suite of multidimensional experiments. Over the past two decades, the development of complementary automated and computational approaches has bolstered the analysis, interpretation and utilization of chemical shifts for elucidation of high-resolution protein and nucleic...

The WeAllWalk Data Set

German Flores & Roberto Manduchi
This data set contains time series from inertial sensors carried by blind subjects walking through pre-determined routes In two buildings in the UCSC campus. The sensors include two MetaWear CPRO (obtaining a tri-axial accelerometer and gyroscope) and two iPhone 6 containing try-axial accelerometer, gyroscopes, and magnetometers. This data set is described in the paper: Flores, German, and Roberto Manduchi. "WeAllWalk: An Annotated Data Set of Inertial Sensor Time Series from Blind Walkers", Proceedings of the...

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