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In-operation calibration of clock-bias and intrinsic parameters for pan-tilt-zoom cameras based on keypoint tracking
(2020-09-20)
We propose a method for jointly estimating intrinsic calibration and internal clock synchronisation for a pantilt- zoom (PTZ) camera using only data that can be acquired in the field during normal operation. Results show ...
Detection: how many pixels are required?
(2020-09-23)
In this work, we studied how detection range of a small target changes as a function of the number of defined target pixels. The intuitively simplest method to look for a target in IR images is to look for the “hottest” ...
Weeping in Modern Jihadi Groups
(2020-09-14)
This article, using a wide range of primary sources, describes the practice of weeping (bukā) in contemporary jihadi groups. It shows that weeping is widespread and encouraged in militant Islamist groups such as al-Qaida ...
Radar imager for Mars’ subsurface experiment—RIMFAX
(2020-11-03)
The Radar Imager for Mars’ Subsurface Experiment (RIMFAX) is a Ground Penetrating Radar on the Mars 2020 mission’s Perseverance rover, which is planned to land near a deltaic landform in Jezero crater. RIMFAX will add a ...
When the noise goes on: received sound energy predicts sperm whale responses to both intermittent and continuous navy sonar
(2020-04-08)
Anthropogenic noise sources range from intermittent to continuous, with seismic and navy sonar technology moving towards near-continuous transmissions. Continuous active sonar (CAS) may be used at a lower amplitude than ...
Understanding Influence Operations in Social Media: A Cyber Kill Chain Approach
(2020-11-14)
Discussions about recent state-run influence operations in social media often focus only on quantitative elements—the number of people interacting with fake news or how many tweets were sent by bots. This article suggests ...
A LoRa Mesh Network Asset Tracking Prototype
(2020)
Long Range (LoRa) is a low powered wide area communications technology, which uses radio frequencies in the industrial, scientific and medical (ISM) band to transmit data over long distances. Due to these properties, i.e., ...
No Country for Old Men? Increasing the Retirement Age in the Norwegian Armed Forces
(2020-05-25)
Ageing workforces due to low fertility rates and higher life expectancies challenge modern industrialized economies. In order to secure economic welfare and to balance public budgets, governments worldwide implement reforms ...
The Motivation to Serve in the Military Among Swedish and Norwegian Soldiers. A Comparative Study
(2020)
The geographic location of Sweden and Norway, combined with a deteriorated security situation in
the Nordic Region and a renewed focus on national defense, makes the development of their armed forces
a hot topic. In ...