Results 31 to 40 of about 3,503 (263)

Possibilities of velocity field analysis from Hinode SOT/SP data

open access: yesOpen Astronomy, 2022
The possibility of analyzing the line of sight (LOS) velocity and its gradient at each point of the Hinode SOT/SP maps using bisector analysis is revealed. A technique for obtaining such gradient is described.
Mozharovsky Sergei G.
doaj   +1 more source

On Directed Length Ratios in the Lorentz-Minkowski Plane

open access: yesCumhuriyet Science Journal, 2023
The linear structure of the Lorentz-Minkowski plane is almost the same as Euclidean plane. But, there is one different aspect. These planes have different distance functions. So, it can be interesting to study the Lorentz analogues of topics that include
Abdulaziz Açıkgöz
doaj   +1 more source

Wheelchair Automatic Docking Method for Body-Separated Nursing Bed Based on Grid Map

open access: yesIEEE Access, 2021
To improve the mode and precision of wheelchair/nursing-bed automatic docking, a novel central embedded wheelchair/nursing-bed automatic docking method based on grid map is proposed.
Yudi Zhu   +6 more
doaj   +1 more source

Method of Tibiocalcaneal Arthrodesis for a Total Defect of the Talus in Patients with Charcot Neuroarthropathy [PDF]

open access: yesTravmatologiâ i Ortopediâ Rossii
Background. At present, treatment of patients with Charcot neuroarthropathy remains an unsolved problem. The current state of the problem motivated us to develop a new original method of hindfoot reconstruction aimed to form a tibiocalcaneal bone block ...
Stanislav A. Osnach   +5 more
doaj   +1 more source

The Use of Bisectors [PDF]

open access: yesJournal of Navigation, 1956
Lieutenant-Commander Bini's interesting paper on the use of bisectors shows the trap open to the believer in the 3-line fix and goes on to show the M.P.P. when four lines are used. However, as the ideal for the four lines is to have each at 90° apart, an error in either one or two lines provides the observer with an ellipse for the M.P.P.
openaire   +1 more source

Bisector-Based Tracking of In Plane Subpixel Translations and Rotations

open access: yesApplied Sciences, 2017
We present a method for distance measuring planar displacements and rotations with image processing methods. The method is based on tracking the intersection of two non-parallel straight segments extracted from a scene.
Julián Espinosa   +4 more
doaj   +1 more source

Optimization of the Production of Rubber Compounds Using Mathematical Models

open access: yesAdvanced Engineering Materials, EarlyView.
Rubber compounds were mixed in a batch internal mixer, and symbolic regression was used to derive mathematical models linking recipe and process parameters to ram path, torque, and mixing quality (incorporation, dispersion, distribution). Subsequent optimization with evolutionary algorithms identified operating conditions that reduce specific energy ...
Anke Bardehle   +7 more
wiley   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

open access: yesAdvanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

A Study on the Optimal Grasping Angle Algorithm for Plug Seedlings Based on Machine Vision

open access: yesAgronomy, 2023
During the replanting operation of a seedling tray, the end-effector needs to repeatedly grab the qualified plug seedlings in the supply tray and release them to the target tray for replanting, and in the process of grasping, the end-effector may cause ...
Junjie Liu   +5 more
doaj   +1 more source

Photovoltaic Stimulation of Mouse and Pig Retina With Pyrolytic Carbon Microelectrodes Integrated on High‐Density Silicon Solar Cell Arrays

open access: yesAdvanced Healthcare Materials, EarlyView.
In this study, we fabricate photovoltaic retinal implants with pyrolytic carbon electrodes and test their ability to stimulate mouse and pig retinas when illuminated with near‐infrared light. We find increased spiking activity in both animal models compared to spontaneous activity and TTX controls and analyze the spike amplitude, latency and frequency.
Akihiro Matsumoto   +10 more
wiley   +1 more source

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