512 research outputs found
Analysis of factors affecting mode choice for the journey to work trip case study, Windsor, Ontario.
Dept. of Geography. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1983 .M576. Source: Masters Abstracts International, Volume: 40-07, page: . Thesis (M.A.)--University of Windsor (Canada), 1983
The Newman-Penrose formalism in quadratic gravity
The quadratic gravity constraints are reformulated in terms of the
Newman-Penrose-like quantities. In such a frame language, the field equations
represent a linear algebraic system for the Ricci tensor components. In
principle, a procedure for the combination of the Ricci components with
standard geometric identities can be applied in a similar way as in the case of
general relativity. These results could serve in various subsequent analyses
and physical interpretations of admitted solutions to quadratic gravity. Here,
we demonstrate the utility of such an approach by explicitly proving general
propositions restricting the spacetime geometry under assumptions on a specific
algebraic type of curvature tensors.Comment: 25 pages, to be submitte
Paléohydrologie et paléoclimatologie des bassins endoréiques du Sud de la Mauritanie depuis 18000 B.P.
DEATH AND THE SUPREME COURT. Barrett Prettyman, Jr. – THE TRIAL OF MEDICAL MALPRACrICE CASES. David W. Louisell and Harold Williams. – QUEST FOR SURVIVAL. Julius Stone.
Effects of processing and storage on nutritional quality of soybean curd
Call number: LD2668 .T4 1986 M57Master of ScienceHuman Nutritio
Palynologie archéologiques : a la recherche des climats, des paysages et des coutumes de la Préhistoire
The bouncing dynamics of inertial self-propelled particles reveals directional asymmetry
The paper is devoted to the study of experimental conditions for bound states
in which active particles are forced by their environment to move forward and
backward in a steady oscillatory mode. The realization of this idea in our
proposal is carried out by means of a hexbug (a vibrating self-propelled toy
robot) confined in a narrow channel bounded by a rigid moving end-wall. The
motion modes were studied both experimentally and theoretically. In the
theoretical framework, we investigated the one-dimensional single-particle
approximation within the Brownian model of active particles with inertia using
numerical simulations. The model includes the hexbug's contact with the base
plate via tilted flexible legs that provide propulsion. At the same time, the
tilting contributes to directional asymmetry of the system. The end-wall
velocity was used as an external parameter to influence the bouncing process.
After regressing the spatial and temporal statistical characteristics, the
simulation satisfactorily reproduced the experimental properties of hexbug
motion, mainly due to the considered directional asymmetry
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