Results 21 to 30 of about 1,655,803 (293)

Wave disturbance filtering in dynamic positioning systems [PDF]

open access: yesModeling, Identification and Control, 1996
Three different approaches to wave disturbance filtering in dynamic positioning systems are studied in this paper. It is shown that a conventional design based on notch filters leads to approximately the same achievable performance of the total control ...
Tor S. Schei
doaj   +1 more source

Enhancement of thermoelectric properties by energy filtering: Theoretical potential and experimental reality in nanostructured ZnSb [PDF]

open access: yes, 2016
Energy filtering has been suggested by many authors as a means to improve thermoelectric properties. The idea is to filter away low-energy charge carriers in order to increase Seebeck coefficient without compromising electronic conductivity. This concept
Clas Persson   +7 more
core   +3 more sources

A New Open Source Implementation of Lagrangian Filtering: A Method to Identify Internal Waves in High‐Resolution Simulations

open access: yesJournal of Advances in Modeling Earth Systems, 2021
Identifying internal waves in complex flow fields is a long‐standing problem in fluid dynamics, oceanography and atmospheric science, owing to the overlap of internal waves temporal and spatial scales with other flow regimes. Lagrangian filtering—that is,
Callum J. Shakespeare   +5 more
doaj   +1 more source

Compressed air mechanical drying for railway branch of Europe [PDF]

open access: yesTransport Problems, 2010
The up-to-date compressed air drying methods for necessities of different industrial branches are covered. In particular, the approved, reliable method of compressed air drying is suggested.
Leonid RIPOL’-SARAGOSI
doaj  

Error Reduction in Vision-Based Multirotor Landing System

open access: yesSensors, 2022
New applications are continuously appearing with drones as protagonists, but all of them share an essential critical maneuver—landing. New application requirements have led the study of novel landing strategies, in which vision systems have played and ...
Juan Pedro Llerena Caña   +2 more
doaj   +1 more source

A resistivity survey of phosphate deposits containing hardpan pockets in Oulad Abdoun, Morocco [PDF]

open access: yesGeofísica Internacional, 2006
In the great Oulad Abdoun Basin exploitation of a new phosphate deposit was begun after the Grand Daoui horizon was exhausted. Inclusions of sterile hardpan—so-called “disturbances” —are hard to detect and interfere with phosphate extraction.
Saad Bakkali
doaj  

Manipulation Robustness of Collaborative Filtering Systems

open access: yes, 2009
A collaborative filtering system recommends to users products that similar users like. Collaborative filtering systems influence purchase decisions, and hence have become targets of manipulation by unscrupulous vendors.
Van Roy, Benjamin, Yan, Xiang
core   +4 more sources

Filter Bubble [PDF]

open access: yesInternet Policy Review, 2019
Introduced by tech entrepreneur and activist Eli Pariser in 2011, the ‘filter bubble’ is a persistent concept which suggests that search engines and social media, together with their recommendation and personalisation algorithms, are centrally culpable for the societal and ideological polarisation experienced in many countries: we no longer encounter a
openaire   +5 more sources

Local refinement mechanism for improved plant leaf segmentation in cluttered backgrounds

open access: yesFrontiers in Plant Science, 2023
Plant phenotyping is a critical field in agriculture, aiming to understand crop growth under specific conditions. Recent research uses images to describe plant characteristics by detecting visual information within organs such as leaves, flowers, stems ...
Ruihan Ma   +10 more
doaj   +1 more source

H ? filtering for stochastic singular fuzzy systems with time-varying delay [PDF]

open access: yes, 2014
This paper considers the H? filtering problem for stochastic singular fuzzy systems with timevarying delay. We assume that the state and measurement are corrupted by stochastic uncertain exogenous disturbance and that the system dynamic is modeled ...
Cai, Min   +3 more
core   +1 more source

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