Results 1 to 10 of about 1,228,198 (294)

Line-of-Sight MIMO in Point-to-Point Millimeter Wave Links via Scattering From Rough Surfaces

open access: yesIEEE Access, 2023
We analyze a point-to-point MIMO communication system over a deterministic channel with two paths: line-of-sight (LoS) and a scattered path over a rough surface.
Carlos A. Viteri-Mera   +2 more
doaj   +2 more sources

A Novel Method for Estimating Free Space 3D Point-of-Regard Using Pupillary Reflex and Line-of-Sight Convergence Points [PDF]

open access: yesSensors, 2018
In this paper, a novel 3D gaze estimation method for a wearable gaze tracking device is proposed. This method is based on the pupillary accommodation reflex of human vision. Firstly, a 3D gaze measurement model is built.
Zijing Wan   +4 more
doaj   +3 more sources

Cognitive factors that predict on-sight and red-point performance in sport climbing at youth level

open access: yesFrontiers in Psychology, 2022
IntroductionThe ascent of a route can be defined as being climbed on-sight or red-point. Climbing performance is measured by the grade of the personal best route that the athlete has ever climbed.MethodologyThe study examined 17 youth climbers (10 male ...
Antonia Ioana Vasile   +3 more
doaj   +1 more source

Lattice Point Visibility on Generalized Lines of Sight [PDF]

open access: yesThe American Mathematical Monthly, 2018
For a fixed $b\in\mathbb{N}=\{1,2,3,\ldots\}$ we say that a point $(r,s)$ in the integer lattice $\mathbb{Z} \times \mathbb{Z}$ is $b$-visible from the origin if it lies on the graph of a power function $f(x)=ax^b$ with $a\in\mathbb{Q}$ and no other integer lattice point lies on this curve (i.e., line of sight) between $(0,0)$ and $(r,s)$.
Goins, Edray Herber   +3 more
openaire   +2 more sources

Psychological factors that influence performance in youth advanced climbers

open access: yesSocial Sciences and Humanities Open, 2023
Introduction: Rock climbing performance in lead can be measured in two ways: on-sight and red-point. On-sight climbing demands greater physiological and psychological factors. There are five main recurring themes that keep climbers highly motivated: risk
Antonia Ioana Vasile   +3 more
doaj   +1 more source

LOS Signal Identification Based on Common Chord Intersection Point Position Deviation from MS in Target Localization

open access: yesApplied Sciences, 2023
Target localization has been a popular research topic in recent years since it is the basis of all kinds of location-based applications. For GNSS-denied urban or indoor environments, the localization method based on time-of-arrival (TOA) is one of the ...
Rui Luo   +3 more
doaj   +1 more source

An Analysis of Sight Distances Considering Both the Vertical and Horizontal Curves of a Tourist Bound Destination Highway in Camarines Sur: The Lagonoy-Presentacion Section [PDF]

open access: yesJournal of Soft Computing in Civil Engineering, 2018
This analyzed sight distances contemplating both vertical and horizontal curves of a tourist bound destination highway in Camarines Sur, particularly the Lagonoy to Presentacion section. The Quantum Geographic Information System (QGIS) was used. The data
Raymundo Romero
doaj   +1 more source

On-Sight and Red-Point Climbing: Changes in Performance and Route-Finding Ability in Male Advanced Climbers

open access: yesFrontiers in Psychology, 2020
AimIn lead climbing, the ascent of the route can be defined as on-sight or red-point. On-sight is the more challenging style since it demands greater physiological and psychological commitment.
Eloisa Limonta   +9 more
doaj   +1 more source

Preference at First Sight [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2016
We consider decision-making and game scenarios in which an agent is limited by his/her computational ability to foresee all the available moves towards the future – that is, we study scenarios with short sight.
Chanjuan Liu
doaj   +1 more source

Improving the sampling strategy for point-to-point line-of-sight modelling in urban environments [PDF]

open access: yesInternational Journal of Geographical Information Science, 2016
Visibility modelling calculates what an observer could theoretically see in the surrounding region based on a digital model of the landscape. In some cases it is not necessary, nor desirable, to compute the visibility of an entire region (i.e. a viewshed), but instead it is sufficient and more efficient to calculate the visibility from point-to-point ...
Bartie, Phil, Mackaness, William
openaire   +3 more sources

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