Results 11 to 20 of about 907,349 (311)

LCDNet: Deep Loop Closure Detection and Point Cloud Registration for LiDAR SLAM [PDF]

open access: yesIEEE Transactions on robotics, 2021
Loop closure detection is an essential component of simultaneous localization and mapping (SLAM) systems, which reduces the drift accumulated over time.
Daniele Cattaneo   +2 more
semanticscholar   +1 more source

Laboratory simulation of the swampy forest system for the passive treatment of acid mine drainage in coal mine reclamation areas

open access: yesScientific Reports, 2023
Coal mining that applies the open pit method has the potential to generate acid mine drainage. Acid mine drainage (AMD) treatments must include processes to mitigate significant challenges; these treatments include active treatment with high costs and ...
Ihsan Noor   +3 more
doaj   +1 more source

Spontaneous Closure of the Arterial Duct after Transcatheter Closure Attempt in Preterm Infants

open access: yesChildren, 2021
(1) Background: Transcatheter closure of the patent arterial duct (TCPDA) in preterm infants is an emerging procedure. Patent arterial duct (PDA) spontaneous closure after failed TCPDA attempts is seen but reasons and outcomes are not reported; (2 ...
Mathilde Méot   +10 more
doaj   +1 more source

Closure System and Its Semantics

open access: yesAxioms, 2021
It is well known that topological spaces are axiomatically characterized by the topological closure operator satisfying the Kuratowski Closure Axioms. Equivalently, they can be axiomatized by other set operators encoding primitive semantics of topology ...
Yinbin Lei, Jun Zhang
doaj   +1 more source

School closure and management practices during coronavirus outbreaks including COVID-19: a rapid systematic review

open access: yesThe Lancet Child & Adolescent Health, 2020
In response to the coronavirus disease 2019 (COVID-19) pandemic, 107 countries had implemented national school closures by March 18, 2020. It is unknown whether school measures are effective in coronavirus outbreaks (eg, due to severe acute respiratory ...
R. Viner   +8 more
semanticscholar   +1 more source

Signaling Transduction of ABA, ROS, and Ca2+ in Plant Stomatal Closure in Response to Drought

open access: yesInternational Journal of Molecular Sciences, 2022
Drought is a global threat that affects agricultural production. Plants have evolved several adaptive strategies to cope with drought. Stomata are essential structures for plants to control water status and photosynthesis rate.
Hui Liu   +6 more
semanticscholar   +1 more source

Intensity Scan Context: Coding Intensity and Geometry Relations for Loop Closure Detection [PDF]

open access: yesIEEE International Conference on Robotics and Automation, 2020
Loop closure detection is an essential and challenging problem in simultaneous localization and mapping (SLAM). It is often tackled with light detection and ranging (LiDAR) sensor due to its view-point and illumination invariant properties.
Han Wang, Chen Wang, Lihua Xie
semanticscholar   +1 more source

Implant Placement after Closure of Oroantral Communication by Sinus Bone Graft Using a Collagen Barrier Membrane in the Shape of a Pouch: A Case Report and Review of the Literature

open access: yesMedicina, 2021
Oro-antral communication (OAC) acts as a pathway for bacteria between the maxillary sinus and oral cavity, and is a common complication after the removal of a dental implant or extraction of a tooth from the maxillary posterior area.
Jae-Ha Baek, Byung-Ock Kim, Won-Pyo Lee
doaj   +1 more source

Transanal Minimally-Invasive Surgery (TAMIS): Experience with No Closure of the Rectal Defect

open access: yesJournal of Coloproctology, 2021
Background In transanal minimally-invasive surgery (TAMIS), the closure of the rectal defect is controversial, and endoluminal suture is one of the most challenging aspects.
Diego Naiderman   +7 more
doaj   +1 more source

Association Between Statewide School Closure and COVID-19 Incidence and Mortality in the US.

open access: yesJournal of the American Medical Association (JAMA), 2020
Importance In the US, states enacted nonpharmaceutical interventions, including school closure, to reduce the spread of coronavirus disease 2019 (COVID-19).
Katherine A. Auger   +11 more
semanticscholar   +1 more source

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