Results 41 to 50 of about 41,692 (280)

The Cosmic Infrared Background Experiment (CIBER): A Sounding Rocket Payload to Study the Near Infrared Extragalactic Background Light [PDF]

open access: yes, 2013
The Cosmic Infrared Background Experiment (CIBER) is a suite of four instruments designed to study the near infrared (IR) background light from above the Earth's atmosphere. The instrument package comprises two imaging telescopes designed to characterize
Arai, T.   +18 more
core   +1 more source

Southern Hemisphere automated supernova search [PDF]

open access: yes, 1995
The Perth Astronomy Research Group has developed an automated supernova search program, using the 61 cm Perth–Lowell reflecting telescope at Perth Observatory in Western Australia, equipped with a CCD camera.
Blair, D.G.   +6 more
core   +2 more sources

3D MOBILE MAPPING WITH A LOW COST UAV SYSTEM [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
In order to accomplish the automatic mobile mapping task in a small area of interest, a low cost UAV system is proposed in this paper. Multiple sensors including a global shutter camera and an inertial measurement unit are calibrated and synchronized to
J. Li   +6 more
doaj   +1 more source

Precision scans of the pixel cell response of double sided 3D pixel detectors to pion and x-ray beams [PDF]

open access: yes, 2011
hree-dimensional (3D) silicon sensors offer potential advantages over standard planar sensors for radiation hardness in future high energy physics experiments and reduced charge-sharing for X-ray applications, but may introduce inefficiencies due to the ...
Akiba, K.   +30 more
core   +1 more source

A 75-ps Gated CMOS Image Sensor with Low Parasitic Light Sensitivity

open access: yesSensors, 2016
In this study, a 40 × 48 pixel global shutter complementary metal-oxide-semiconductor (CMOS) image sensor with an adjustable shutter time as low as 75 ps was implemented using a 0.5-μm mixed-signal CMOS process.
Fan Zhang, Hanben Niu
doaj   +1 more source

Status, gimmicks, and thwarted celebrations: the 2020 Olympics in Japan’s transnational politics

open access: yesJournal of Contemporary East Asia Studies, 2023
Japan famously muddled through the 2020 Summer Olympics – triumphant as a host in that the Games were held, after a year-long delay, despite the global COVID-19 pandemic that had threatened to shutter the event entirely.
David Leheny
doaj   +1 more source

Dr TIM: Ray-tracer TIM, with additional specialist scientific capabilities

open access: yes, 2013
We describe several extensions to TIM, a raytracing program for ray-optics research. These include relativistic raytracing; simulation of the external appearance of Eaton lenses, Luneburg lenses and generalized focusing gradient-index (GGRIN) lenses ...
Courtial, Johannes   +2 more
core   +1 more source

The Influence of Annealing on the Sb Layer in the Synthesis of [001]‐Oriented Sb2Se3 Film for Photoelectrochemical Hydrogen Gas Generation

open access: yesAdvanced Functional Materials, EarlyView.
[001]‐oriented Sb2Se3 film with improved crystallinity and adjusted composition is achieved via a new thermal treatment approach consisting of preliminary annealing of the Sb layer before its selenization. The findings of this work demonstrate enhanced charge carriers' transportation, a stable performance, and an improvement of H2 generation from ...
Magno B. Costa   +7 more
wiley   +1 more source

Efficient Continuous-Time SLAM for 3D Lidar-Based Online Mapping

open access: yes, 2018
Modern 3D laser-range scanners have a high data rate, making online simultaneous localization and mapping (SLAM) computationally challenging. Recursive state estimation techniques are efficient but commit to a state estimate immediately after a new scan ...
Behnke, Sven, Droeschel, David
core   +1 more source

Photocatalytic Versus Stoichiometric Hydrogen Generation Using Mesoporous Silicon Catalysts: The Complex Role of Sacrificial Reagents

open access: yesAdvanced Functional Materials, EarlyView.
This study highlights the importance of accounting for stoichiometric hydrogen produced when utilizing Si photocatalysts. The stoichiometric contribution is sacrificial reagent dependent and decreases with increasing sterics around the catalyst surface.
Sarrah H. Putwa   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy