We conduct an experimental study of axisymmetric gravity-capillary standing waves generated by a vertically vibrating ring on fluid surface. Different regimes are highlighted at the basin center: linear, nonlinear, and ejection regimes. For moderate forcing, spatial profile breaks up-down symmetry as predicted third-order nonlinear theory, whereas for stronger maximum height reached gravity-wav...

This paper presents a new interpretation of the geometry of Triassic alignment of J. Sidi Mahdi –J. Zitoun in Medjerda Valley Plain (Northern Tunisia) based on detailed analysis of gravity and seismic reflection data. The main results of gravity analysis do not show a distinguish gravity anomaly over Triassic evaporites bodies. The positive gravity anomaly seems to be related to the entire stru...

In the future, humans are likely to be exposed to environments with altered gravity conditions, be it only visually (Virtual and Augmented Reality), or visually and bodily (space travel). As visually and bodily perceived gravity as well as an interiorized representation of earth gravity are involved in a series of tasks, such as catching, grasping, body orientation estimation and spatial infere...

Aiming at the problem that segmented gesture by Kinect depth information usually contains wrist data, which easily causes subsequent false gesture recognition, a gesture segmentation and positioning algorithm based on improved depth information was proposed.Firstly, the gesture binary image was detected based on depth information threshold limit in experimental space.Secondly, according to char...

We investigate the phase structure of three-dimensional quantum gravity coupled to an Ising spin system by means of numerical simulations. The quantum gravity part is modelled by the summation over random simplicial manifolds, and the Ising spins are located in the center of the tetrahedra, which constitute the building blocks of the piecewise linear manifold. We find that the coupling between ...

Globular clusters (GCs) in the Milky Way have characteristic velocity dispersions that are consistent with the predictions of Newtonian gravity, and may be at odds with Modified Newtonian Dynamics (MOND) and possibly the cold dark matter model. We discuss a modified gravity (MOG) theory that can successfully model the velocity dispersions of GCs in the Galactic neighborhood. MOG produces veloci...

PURPOSE The present investigation evaluated the relation between the dynamic properties of the bilateral condyle in habitual maximum opening and closing movement and the occlusal force balance with clenching force. METHODS Nine normal adults participated in this study. The translation of bilateral condyle and the rotation of intercondylar axis in habitual maximum opening and closing movement ...

The step surmounting performance of a mobile robot is an important performance measure for obstaclenavigation. In this paper, a W-shaped track robot is taken as a research object and the step-climbing performance is analyzed theoretically. It is simulated by the RecurDyn software and is tested on a terrain simulation platform using a NDI dynamic measuring machine. In the independent step climbi...

When a rotorcraft has N blades, N/rev vibration becomes large as the cruise speed increases. This article numerically examines effect of Center-of-Gravity (CG) offset on vibration. A mid-sized rotorcraft, SH-60K, was selected for analysis with use CAMRAD II. minimum 60% decrease in baseline z-acceleration achieved at pilot seat, which dominantly defines circumstance CG. There exists middle CG l...