KINEMATICS OF BOARD BREAKING IN KARATE USING VIDEO ANALYSIS – A DYNAMIC MODEL OF APPLIED PHYSICS AND HUMAN PERFORMANCE

Martial arts have fascinated the world with its fast paced actions andamazing feats. In this study the kinematics of a karate straight punch hasbeen studied through slow motion video analysis in relation to momentum,velocity, acceleration and impact of force as a function of time to enhancethe execution of the karate straight punch. It has been found that the impulsewas significantly smaller when the board is broken.From an educational perspective, this analysis will help in integrating somevalid concepts of physics in teaching mechanical concepts of movements insports. This quantitative analysis will enable the students to understand themovement technique to avoid the injuries. It will be helpful in devisingtraining schedule for karate students and in teaching them karate skills inproper manner. A person, regardless of size and strength, if trained properlyin the terms of body mechanics, kinematics, and physics of martial arts, canput out optimum performance and derive maximum benefits withoutunnecessary wastage of energy. The subjects had also completed theConcentration Grid to find out their concentration levels. The karateka whowas successful in breaking the board has been found to have a higher level ofconcentration as compared to the unsuccessful karateka, indicating that thispsychological parameter also has significant impact on the impulse leadingto board breaking karate performance

0629wormPDBSslow4.avi

Diffraction Video 3 of worms associated with Figure 8

drive-download-20230716T150614Z-001.zip

Data extracted from videos 1, 2, and 3

drive-download-20230713T190657Z-001.zip

Code Sequence to calculate largest Lyapunov exponent

0629wormPDBSslow2.avi

Diffraction Video 2 of worms associated with Figure 8

0629wormPDBSslow3.avi

Diffraction Video 1 of worms associated with Figure 8

Multi-channel measurements of C. elegans’ largest Lyapunov exponents using optical diffraction

Dynamic diffraction (DOD) is a form of microscopy that allows the dynamic tracking of changing shapes in a 1D time series. DOD is capable of capturing the locomotion of a nematode while swimming freely in a 3D space, allowing the locomotion of the worm to more closely mimic natural behavior than in some other laboratory environments. More importantly, we are able to see markers of chaos as DOD covers dynamics on multiple length scales. This work introduces a multichannel method to measure the dynamic complexity of microscopic organisms. We show that parameters associated with chaos, such as the largest Lyapunov exponent (LLE), the mean frequency, mutual information (MI), and the embedding dimension, are independent of the specific point sampled in the diffraction pattern, thus demonstrating experimentally the consistency of our dynamic parameters sampled at various locations (channels) in the associated optical far-field pattern

THE 43Δg4^{3} \Delta_{g} STATE IN K2K_{2} - INVESTIGATING A POSSIBLE GATEWAY TO CORE NON-PENETRATING RYDBERG STATES

Author Institution: Department of Physics, United States Military Academy; Department of Physics, Temple University; Department of Chemistry, University of Illinois at Chicago; Key Lab Atom and Molecular Nanoscience, Tsinghua University; Laboratoire de Physique des Atomes, Lasers, Mol\'{e}cules et Surfaces, (PALMES), CNRS et Universit\'{e}; Laboratoire de Spectrom\'etrie Ionique et Moleculaire (L.A.S.I.M), CNRS et Universit\'e Lyon (UMR5579)Core non-penetrating Rydberg states can give useful information on the electronic structure of the ion core; however, core non-penetrating states are difficult to observe since these states hardly penetrate the more accessible ion core and the electronic angular momentum quantum number, l, is large, for the core non-penetrating states thus the transition dipole moment to the core non-penetrating states is small. The core penetrating $4^{3} \Delta_{g}$ state (atomic limit: $4s+5d$) and the core non-penetrating $3^{3}\Delta_{g}$ state (atomic limit: $4s+4f$) perturb each other since they have the same symmetry and overlapping energy states thus creating the possibility of a gateway to other core non-penetrating states