Results 11 to 20 of about 915,662 (288)

Symmetry-preserving Observers [PDF]

open access: yes, 2008
This paper presents three non-linear observers on three examples of engineering interest: a chemical reactor, a non-holonomic car, and an inertial navigation system. For each example, the design is based on physical symmetries.
Bonnabel, S., Martin, Ph., Rouchon, P.
core   +3 more sources

They Are All After You: Investigating the Viability of a Threat Model That Involves Multiple Shoulder Surfers [PDF]

open access: yes, 2017
Many of the authentication schemes for mobile devices that were proposed lately complicate shoulder surfing by splitting the attacker's attention into two or more entities.
Alt, Florian   +5 more
core   +1 more source

Personalised ecology and detection functions

open access: yesPeople and Nature, 2020
Direct interactions with nature are important for people's health, well‐being and support for pro‐nature policies. There is an urgent need better to understand the structure and dynamics of these interactions, and how they differ among individual people,
Kevin J. Gaston
doaj   +1 more source

HD 66051, an eclipsing binary hosting a highly peculiar, HgMn-related star

open access: yesScientific Reports, 2017
HD 66051 is an eclipsing system with an orbital period of about 4.75 d that exhibits out-of-eclipse variability with the same period. New multicolour photometric observations confirm the longevity of the secondary variations, which we interpret as a ...
Ewa Niemczura   +6 more
doaj   +1 more source

Searches of the periods and variability type definition of new variable stars AL Ari, FM Leo, LL Aqr, V1125 Tau, V1366 Ori

open access: yesOdessa Astronomical Publications, 2017
Measurements of brightness of stars 1AL Ari, FM Leo, LL Aqr, V1125 Tau, V1366 Ori opened in ”HIPPARCOS” experiment are carried out using negatives of the Odessa observatory.
A. P. Solonovich   +2 more
doaj   +1 more source

A turbidity sensor development based on NL-PI observers: Experimental application to the control of a Sinaloa’s River Spirulina maxima cultivation

open access: yesOpen Chemistry, 2020
This article addresses the problem of controlling the growth of microalgae originating in Mexican rivers, especially in the state of Sinaloa, Culiacan River.
Flores Gerardo   +5 more
doaj   +1 more source

Perceived ability and actual recognition accuracy for unfamiliar and famous faces [PDF]

open access: yes, 2014
In forensic person recognition tasks, mistakes in the identification of unfamiliar faces occur frequently. This study explored whether these errors might arise because observers are poor at judging their ability to recognize unfamiliar faces, and also ...
Attard, Janice   +2 more
core   +2 more sources

Virtual Diagnostic Sensors Design for an Automated Guided Vehicle

open access: yesApplied Sciences, 2018
In recent years, Automated Guided Vehicles (AGVs) have been playing an increasingly important role in producing industry and infrastructure and will soon arrive to other areas of human life such as the transportation of goods and people. However, several
Ralf Stetter   +2 more
doaj   +1 more source

Space and Observers in Cosmology [PDF]

open access: yes, 2001
I provide a prescription to define space, at a given moment, for an arbitrary observer in an arbitrary (sufficiently regular) curved space-time. This prescription, based on synchronicity (simultaneity) arguments, defines a foliation of space-time, which ...
Lachièze-Rey, M.
core   +2 more sources

Anti-slip control based on optimal slip ratio for heavy-haul locomotives

open access: yesThe Journal of Engineering, 2019
To solve the problem of wheelset slip and effectively exert locomotive traction, a protection method of anti-slip control with integral sliding mode based on optimal slip ratio is proposed.
Jing He   +4 more
doaj   +1 more source

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