This study aimed to investigate the gait modification strategies of trunk over right stance phase in patients with right anterior cruciate ligament deficiency (ACL-D). Thirty-six patients with right chronic ACL-D were recruited, as well as 36 controls. A 3D optical video motion capture system was used during gait and stair ambulation. Kinematic variables of the trunk and kinematic and kinetic v...

STUDY DESIGN Retrospective cohort study. OBJECTIVES To determine if runners with a history of Achilles tendonopathy (AT) demonstrate a difference in transverse-plane motion and moments at the distal tibia and knee compared to runners without a history of AT. BACKGROUND One of the more prevalent overuse running injuries is AT. It has been hypothesized that prolonged pronation causes contradi...

We present a new method for analyzing a student’s learning over time, for a specific skill: analysis of the graph of the student’s moment-by-moment learning over time. Moment-bymoment learning is calculated using a data-mined model which assesses the probability that a student learned a skill or concept at a specific time during learning (Baker, Goldstein, & Heffernan, 2010, 2011). Two coders l...

The nature of Mashhoon’s spin-rotation coupling is the interaction between a particle spin (gravitomagnetic moment) and a gravitomagnetic field. Here we will consider the coupling of graviton spin to the weak gravitomagnetic fields by analyzing the Lagrangian density of weak gravitational field, and hence study the purely gravitational generalization of Mashhoon’s spin-rotation couplings. PACS ...

The problem of independence and completeness of rotation moment invariants is addressed in this paper. General method for constructing invariants of arbitrary orders by means of complex moments is described. It is shown that for any set of invariants there exists relatively small basis by means of which all other invariants can be generated. The method how to construct such a basis is presented...

Numerous papers have been devoted to the moment invariants (MI). They usually describe their derivation, various invariant properties, numerical behavior, and their power to serve as the features in many pattern recognition tasks. Only few papers have dealt with the independence and completeness of the sets of MI’s. However, both these properties are of fundamental importance from theoretical a...

One of the factors that influence dynamic characteristics machining systems is cutting tool. Cutting tools are very diverse, and receptance coupling substructure analysis (RCSA) essential for analyzing each For RCSA, a full matrix equipment essential. In this study, rotational degree-of-freedom was estimated analyzed using translational receptance. Displacement/moment according to distance resp...