Non-Collisional Orogeny In Northeast Japan Driven By Nearby Same-Dip Double Subduction
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https://doi.org/10.1038/s41561-025-01704-5 <-- shared paper
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#geology #structuralgeology #japan #subduction #system #plate #geometry #mantle #tectonics #geodynamics #orogeny #Ryukyu #IzuBoninMarianas #kinematics #backarc #earthquake #fault #faulting #orogenesis #platetectonics
#Kinematics
📰 "Coherent Turning Behaviors Revealed Across Adherent Cells"
https://arxiv.org/abs/2503.20304 #Physics.Bio-Ph #Kinematics #Cell
Camera-Equipped Nurse Shark Captures Rare Footage of Great White https://petapixel.com/2025/04/29/camera-equipped-nurse-shark-captures-rare-footage-of-great-white/ #floridaatlanticuniversity #genevievesylvester #greatwhiteshark #videographer #Technology #kinematics #nurseshark #drkajiura #shark #News #film #fau
Kinematic Evolution Of A Large Paraglacial Landslide In The Barry Arm Fjord Of Alaska
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https://doi.org/10.1029/2023JF007119 <-- shared paper
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https://doi.org/10.5066/P9EUCGJQ <-- shared technical article
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https://www.sciencebase.gov/catalogMaps/mapping/ows/5fff561ed34e592d8671ee85?service=wms&request=getcapabilities&version=1.3.0 <-- shared web mapping service
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#GIS #spatial #mapping #massmovement #landslide #engineeringgeology #remotesensing #sitespecific #LiDAR #iFSAR #paraglacial #kinematics #mapping #monitoring #spatialanalysis #spatiotemporal #fedscience #risk #hazard #glacier #retreat #climatechange #Alaska #BarryArm #fjord #hazardassessment #tsunami #wave #BarryGlacier #change #sensors #fieldwork #surveillance #melting #permafrost #Whittier #geophysics #geology #Alaska #geomorphometry #deglaciating
@USGS
📰 "Coherent Turning Behaviors Revealed Across Adherent Cells"
https://arxiv.org/abs/2503.20304 #Physics.Bio-Ph #Kinematics #Cell
This suggests beak adaptations for strength don’t necessarily reduce efficiency on easier foods. 🐤 Read the full study by PhD student Tim Andries here: https://doi.org/10.1242/jeb.249681
#canaries #kinematics #morphology @J_Exp_Biol (3/3)
Overarm Throwing - Effect of Specific Strength Training on Velocity [html/pdf 11pp] #cricket #sports #throwing #kinematics https://sportsmedicine-open.springeropen.com/articles/10.1186/s40798-024-00785-7
In our recent preprint (introduced here https://mstdn.science/@dagmarfraser/113108130352424451) we show advantages of Savitzky-Golay differentiator filter in velocity-curvature power law calculations (possibly applicable in #kinematics in general). SG de-noises & gives arbitrary derivative, avoiding compounding error of BW filtering & repeated diff'ing.
We provide open-source code in #MATLAB https://github.com/dagmarfraser/velocity-curvature-power-law-protocol with BW filters and SG side by side, for easy drop in comparison and implementation.
Pre-processing human #kinematics with zerolag 2nd order lowpass ButterWorth filters is almost an article of faith. Winter et al. (1974) introduced this filter strategy for motion tracking gait @ 60Hz × 96 × 96 pixels!
The BW filter allows simple, successive differentiation of noisy x & y to give ‘denoised’ velocity, acceleration & jerk.
Yet one-size-fits-all might need updating after 50 years; for higher sampling rates, more pixels, and novel tasks?
Each step in the power law calculation– filtering, differentiation & regression –can potentially bias towards 1/3. We distil a toolkit, building on key insights from the literature, & demonstrate it does not fall foul of this. https://github.com/dagmarfraser/velocity-curvature-power-law-protocol
The code & discussions are relevant to all #kinematics research using zero lag 10Hz low pass Butterworth filters, using finite differences differentiation (velocity to acceleration to jerk), or does linear regression after a log projection. 3/8
‘The Apprentice’ Backer Kinematics Confirms Exit From Project, Cites “Creative Differences”
#News #2024election #DonaldTrump #ElectionLine #Kinematics #TheApprentice
More zoetrope plots, flipped the animation and added a few more rings. Next is to use some big paper to get a proper 12” plot 🌀
#PenPlotter #GenerativeArt #CreativeCoding #MastoArt #Art #ArtForSale #Artist #ArtForSaleByArtist #PenPlotterArt #PenPlot #Zoetrope #Animation #Kinematics
IOB
The #Kinematics of Proal Chewing in #rats
E D McParland, J K Mitchell, J D Laurence-Chasen, L C Aspinwall, O Afolabi, K Takahashi, C F Ross, N J Gidmark,
https://doi.org/10.1093/iob/obae023
Fast Bowling Performance - Technique Variables [html/epub/xml/pdf 13pp] #cricket #biomechanics #kinematics https://www.mdpi.com/2076-3417/14/15/6752
An engineering grade #kinematics simulation with #FEM stress/strain analysis?
Very useful #robotics #kinematics #python #library #package #robot #robot-kit #robots : "petercorke/robotics-toolbox-python: Robotics Toolbox for Python"(https://github.com/petercorke/robotics-toolbox-python)
Forgive the recent apparent obsession (I’d call it a fascination) with the #cycloid but I’ve just discovered something I’d not heard of before. It is also called a #TautochroneCurve or #Isochrone curve, which means that a particle starting from any location on the curve will get to the #MinimumPoint at precisely the same time as a particle starting at any other point.
#Dynamics #Kinematics #Mathematics #AppliedMathematics #Mechanics #ClassicalMecanics #WxMaxima #FreeSoftware #MyWork #CCBYSA
Interestingly, it is also the curve that solves the #Brachistochrone problem, which means that starting at a cusp on the inverted curve (maximum height), a frictionless ball will roll under uniform gravity in minimum time from the start to any other point on the curve, even beating the straight line path.
#Mathematics #Geometry #Maths #AppliedMathematics #Mechanics #Kinematics #Dynamics #Physics
Imagine a circular wheel rolling, without skidding, on a flat, horizontal surface. The #locus of any given point on its #circumference is called a #cycloid. It is a #periodic #curve with #period over the #circle's circumference and has #cusps whenever the point is in contact with the surface (the two sides of the curve are tangentially vertical at that point).
#Mathematics #Geometry #Maths #AppliedMathematics #Mechanics #Kinematics #Dynamics #Physics #MyWork #CCBYSA #WxMaxima
The #Kinematics #Dress represents a new approach to manufacturing which tightly integrates design, simulation, and digital fabrication to create complex, customized products.
Composed of thousands of unique interlocking components, each dress is 3D printed as a single folded piece and requires no assembly.
Bodies are 3-dimensional but clothing is traditionally made from flat material that is cut and painstakingly pieced together.
In contrast, Kinematics garments are created in 3D, directly from body scans and require absolutely no assembly.
We employ a smart folding strategy to compress Kinematics garments into a smaller form for efficient fabrication.
By folding the garments prior to printing them, we can make complex structures larger than a 3D printer that unfold into their intended shape.
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