Results 61 to 70 of about 31,468 (298)

ImpDAR: an open-source impulse radar processor

Annals of Glaciology, 2020
Despite widespread use of radio-echo sounding (RES) in glaciology and broad distribution of processed radar products, the glaciological community has no standard software for processing impulse RES data.
David A. Lilien, Benjamin H. Hills, Joshua Driscol, Robert Jacobel, Knut Christianson   +4 more
doaj   +1 more source

Deep learning for face detection using matlab [PDF]

, 2020
This project report presents face detection using Convolutional Neural Network algorithm and Deep Learning combination (DCT / DL) throughout MATLAB simulation and modeling.
Slim, Salim Adnan
core  

Miniature high-power impulse transmitter for radio-echo sounding [PDF]

Journal of Glaciology, 1994
AbstractWe have developed a miniature high-power impulse transmitter for radio-echo sounding of glaciers. It features two synchronous second break-down pulse generators operating in a differential configuration. Specifications include bipolar 550 V pulses having rise times less than 2 ns, 512 Hz repetition rate, 180 mA at 10-14 V d.c.
B. Barry Narod, Garry K.C. Clarke
openaire   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

The Dominion Range Ice Core, Queen Maud Mountains, Antarctica - General Site and Core Characteristics with Implications [PDF]

, 2017
The Transantarctic Mountains of East Antarctica provide a new milieu for retrieval of ice-core records. We report here on the initial findings from the first of these records, the Dominion Range ice-core record.
Gow, Anthony J., Grootes, Pieter M., Lyons, W. Berry, Mayewski, Paul A., Meese, Debra A., Saltzman, Eric, Sowers, Todd, Spencer, Mary Jo, Twickler, Mark S., Watson, M. Scott   +9 more
core   +1 more source

The WISDOM Radar: Unveiling the Subsurface Beneath the ExoMars Rover and Identifying the Best Locations for Drilling [PDF]

, 2017
The search for evidence of past or present life on Mars is the principal objective of the 2020 ESA-Roscosmos ExoMars Rover mission. If such evidence is to be found anywhere, it will most likely be in the subsurface, where organic molecules are shielded ...
Alain Herique, Alice Le Gall, Cathy Quantin-Nataf, Dirk Plettemeier, Elena Pettinelli, Essam Heggy, Gunes-Lasnet S., Hamadi A., Jean-Jacques Berthelier, Jorge L. Vago, Joudrier L., Kao K.C., Le Gall A., Lu Y., Paar G., Pettinelli E., Sophie Dorizon, Stephen Clifford, Stillman D.E., Stillman D.E., Stillman D.E., Susanne Schwenzer, Svein-Erik Hamran, the WISDOM Team, , Tzanis A., Tzanis A., Valérie Ciarletti, Wilkins D.E., Wlodek Kofman, Wolf-Stefan Benedix, Yann Hervé, Yee K.S., Yoshikawa K., Zhang H.   +33 more
core   +3 more sources

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Polarimetric multi-offset radio-echo sounding with a radio frequency-over-fiber ApRES system

Journal of Glaciology
Polarimetric multi-offset radio-echo sounding offers improved constraints on englacial thermal conditions, basal properties and ice crystal orientation compared to standard monostatic observations.
Daniel F. May, Dustin M. Schroeder, Paul T. Summers, Thomas O. Teisberg, Anna L. Broome, Nicole L. Bienert, Jaiden Zak, Tun Jan Young, Marianne S. Karplus, Slawek M. Tulaczyk   +9 more
doaj   +1 more source

An englacial hydrologic system of brine within a cold glacier: Blood Falls, McMurdo Dry Valleys, Antarctica

Journal of Glaciology, 2017
Taylor Glacier hosts an active englacial hydrologic system that feeds Blood Falls, a supraglacial outflow of iron-rich subglacial brine at the terminus, despite mean annual air temperatures of −17°C and limited surface melt.
JESSICA A. BADGELEY, ERIN C. PETTIT, CHRISTINA G. CARR, SLAWEK TULACZYK, JILL A. MIKUCKI, W. BERRY LYONS   +5 more
doaj   +1 more source