An Ontario Libraries' Network, or Cooperative Entanglement

While I accepted the invitation to discuss the College Bibliocentre at this Clinic, I cannot say that I did so with equanimity. Quite apart from many organizational difficulties, the systems both in operation and in varying stages of development at the College Bibliocentre, have evolved from practical emersion without the benefit of the finite planning or initial test and research proce- dures from grant aids that many others have experienced. This is why I adopted the latter part of my title for this paper. I was asked particularly to discuss the techniques we are using to acquire the necessary input to the various systems. However, if I was asked to underline what I considered to be the major problems facing the development of a central technical service unit, the technicalities of how to input would be the least concern. The major problems are those beyond the technological requirements how to achieve the degree of coordination required and, in particular, how to overcome the financial hazards which face such an organiza- tion.published or submitted for publicatio

REGIONAL AND SECTORAL EFFECTS OF COMPETITION FOR WHEAT TRANSPORTATION

Crop Production/Industries,

Failure Rate Computations Based on Mariner Mars 1964 Spacecraft Data

Mariner Mars 1964 failure rates computed for use in reliability predictions and cost allocation

Voltage regulator with plural parallel power source sections Patent

Dissipative voltage regulator system for minimizing heat dissipatio

Quantum oscillations and Berry's phase in topological insulator surface states with broken particle-hole symmetry

Quantum oscillations can be used to determine properties of the Fermi surface of metals by varying the magnitude and orientation of an external magnetic field. Topological insulator surface states are an unusual mix of normal and Dirac fermions. Unlike in graphene and simple metals, Berry's geometric phase in topological insulator surface states is not necessarily quantised. We show that reliably extracting this geometric phase from the phase offset associated with the quantum oscillations is subtle. This is especially so in the presence of a Dirac gap such as that associated with the Zeeman splitting or interlayer tunneling. We develop a semi-classical theory for general mixed normal-Dirac systems in the presence of a gap, and in doing so clarify the role of topology and broken particle-hole symmetry. We propose a systematic procedure of fitting Landau level index plots at large filling factors to reliably extract the phase offset associated with Berry's phase.Comment: 12 pages, 6 figures. Included effect of bulk Fermi surfac

A smart vision sensor for detecting risk factors of a toddler's fall in a home environment

This paper presents a smart vision sensor for detecting risk factors of a toddler's fall in an indoor home environment assisting parents' supervision to prevent fall injuries. We identified the risk factors by analyzing real fall injury stories and referring to a related organization's suggestions to prevent falls. In order to detect the risk factors using computer vision, two major image processing methods, clutter detection and toddler tracking, were studied with using only one commercial web-camera. For practical purposes, there is no need for a toddler to wear any sensors or markers. The algorithms for detection have been developed, implemented and tested

Can Effects of Dark Matter be Explained by the Turbulent Flow of Spacetime?

For the past forty years the search for dark matter has been one of the primary foci of astrophysics, although there has yet to be any direct evidence for its existence (Porter et al. 2011). Indirect evidence for the existence of dark matter is largely rooted in the rotational speeds of stars within their host galaxies, where, instead of having a ~ r^1/2 radial dependence, stars appear to have orbital speeds independent of their distance from the galactic center, which led to proposed existence of dark matter (Porter et al. 2011; Peebles 1993). We propose an alternate explanation for the observed stellar motions within galaxies, combining the standard treatment of a fluid-like spacetime with the possibility of a "bulk flow" of mass through the Universe. The differential "flow" of spacetime could generate vorticies capable of providing the "perceived" rotational speeds in excess of those predicted by Newtonian mechanics. Although a more detailed analysis of our theory is forthcoming, we find a crude "order of magnitude" calculation can explain this phenomena. We also find that this can be used to explain the graviational lensing observed around globular clusters like "Bullet Cluster".Comment: 5 pages, Accepted for publication in Journal of Modern Physics: Gravitation and Cosmology (Sept. 2012