نتایج جستجو برای: mav
تعداد نتایج: 752 فیلتر نتایج به سال:
This article concerns airflow-based odometry for estimating MAV flight speed from airflow measurements provided by a set of thermal anemometers. Our approach relies on Gated Recurrent Unit (GRU) based deep learning to extract features noisy and turbulent measurement signals triaxial anemometers, in order establish the underlying mapping between speed. The proposed solution is validated multi-ro...
In this workshop, we share our experience on autonomous flights with a MAV using a monocular camera as the only exteroceptive sensor. We developed a flexible and modular framework for realtime onboard MAV navigation fusing visual data with IMU at a rate of 1 kHz. We aim to provide a detailed insight of how our modules work and how they are used in our system. Using this framework, we achieved u...
Mouse adenovirus-type 1 (MAV-1) has recently been shown to cause a fatal hemorrhagic encephalopathy in certain strains of mice whereas other strains are resistant. Morbidity is associated with a productive infection of cerebrovascular endothelial cells, resulting in necrosis of the vasculature, infarction, hemorrhage and death within 4 - 6 days. Previous studies were not able to define a role f...
Pathogens are common and diverse in natural communities and have been implicated in the success of host invasions. Yet few studies have experimentally measured how pathogens impact native versus exotic hosts, particularly when individual hosts are simultaneously coinfected by diverse pathogens. To estimate effects of interactions among multiple pathogens within host individuals on both transmis...
We study the “anti-theft” mechanisms available to consumers to thwart unauthorised access to personal data on stolen Android smartphones. With millions of devices stolen in the USA in 2013 alone, such attacks are a serious and growing problem. The main mitigation against unauthorised data access on stolen devices is provided by “anti-theft” apps; that is, with “remote wipe” and “remote lock” fu...
The MAV ’08 competition in Agra, India focused on the problem of using air and ground vehicles to locate and rescue hostages being held in a remote building. Executing this mission required addressing a number of technical challenges. The first such technical challenge was the design and operation of a micro air vehicle (MAV) capable of flying the necessary distance and carrying a sensor payloa...
This paper presents a non-linear state observer-based integrated navigation scheme for estimating the attitude, position and velocity of micro aerial vehicles (MAV) operating in GPS-denied indoor environments, using the measurements from low-cost MEMS (micro electro-mechanical systems) inertial sensors and an RGB-D camera. A robust RGB-D visual odometry (VO) approach was developed to estimate t...
In this paper, we address the problem of globally localizing and tracking the pose of a camera-equipped micro aerial vehicle (MAV) flying in urban streets at low altitudes without GPS. An image-based global positioning system is introduced to localize the MAV with respect to the surrounding buildings. We propose a novel airground image-matching algorithm to search the airborne image of the MAV ...
Mouse adenovirus type 1 (MAV-1) targets endothelial and monocyte/macrophage cells throughout the mouse. Depending on the strain of mouse and dose or strain of virus, infected mice may survive, become persistently infected, or die. We surveyed inbred mouse strains and found that for the majority tested the 50% lethal doses (LD(50)s) were >10(4.4) PFU. However, SJL/J mice were highly susceptible ...
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