Search
Now showing items 161-170 of 188
A Cloud-based experimentation and analysis framework for services at the tactical edge
(2022-09-22)
In this paper we present an experimentation and analysis framework that utilizes a public cloud infrastructure for most of the experimentation environment but also supports interaction with services installed on servers ...
Cost-Effective Flight Strategy for Aerial Thermography Inspection of Photovoltaic Power Plants
(2022-11-06)
Thermography from unmanned aerial vehicles (UAV) is widely used for module condition surveys and defect detection in solar (photovoltaic) power plants. This article presents an optimized defect inspection procedure in which ...
A risk-increasing safety strategy? Evaluating the Traditional Risk-mitigating Strategy in Dealing with Dumped Ammunition and Explosive Remnants of War
(2022-10-16)
In Norway, hundreds of thousands of tonnes of explosive remnants of war remain in nature. It has always been recognized that the ordnance could represent a certain explosive risk if disturbed, and that some of the constituents ...
Multi-gigawatt peak power post-compression in a bulk multi-pass cell at a high repetition rate
(2022-09-27)
The output of a 200 kHz, 34 W, 300 fs ytterbium amplifier
is compressed to 31 fs with >88% efficiency to reach a peak
power of 2.5 GW, which to date is a record for a singlestage bulk multi-pass cell. Despite operation ...
A Performance Characteristic for Net Light Collection in Hyperspectral and Conventional Cameras: A*
(2022-12-09)
The signal-to-noise ratio of modern cameras under normal operating conditions tends to be limited by “photon noise” originating from the random arrival of photons. For best signal-to-noise ratio, it is desirable to collect ...
Anonymous Tokens with Public Metadata and Applications to Private Contact Tracing
(2022-10-22)
Anonymous single-use tokens have seen recent applications in private Internet browsing and anonymous statistics collection. We develop new schemes in order to include public metadata such as expiration dates for tokens. ...
Ultrafast Pulse Compression in Bulk with > 20 Times Spectral Broadening Factor from a Single Stage
(2021-11-01)
We introduce the combination of multi-pass cell and multi-plate spectral broadening. We demonstrate the compression of 110-μJ pulses from 900-fs to 60-fs in a single stage and report broadening to 38-fs transform-limit by ...
Generalization and stabilization of exact scattering solutions for spherical symmetric scatterers
(2022-08-29)
In a previous work the authors described a fast high-fidelity computer model for acoustic scattering from multi-layered elastic spheres. This work is now extended with a scaling strategy significantly mitigating the problem ...
Compact multimodal multispectral sensor system for tactical reconnaissance
(Society of Photo-Optical Instrumentation Engineers (SPIE), 2022-09-30)
Multispectral imaging is an attractive sensing modality for small unmanned aerial vehicles (UAVs) in numerous military and civilian applications such as reconnaissance, target detection, and precision agriculture. Cameras ...
Spin-vibronic interaction induced reverse intersystem crossing: A case study with TXO-TPA and TXO-PhCz molecules
(2022-11-01)
We highlight the important roles the direct spin–orbit (DSO) coupling, the spin-vibronic (SV) coupling, and the dielectric constant of the medium play on the reverse intersystem crossing (RISC) mechanism of TXO-TPA and ...