Observations from a broad range of astrophysical scales have forced us to the realization that the well understood matter comprising the stars and galaxies we see around us accounts for only a small fraction of the total mass of the Universe. An amount roughly five times larger exist in the form of dark matter about which we have virtually no direct evidence apart from its large scale gravitational effects. It is also known that the largest contribution to the energy density of the universe is the dark energy, a negative pressure form of energy which will not be dealt with here. I will present a candidate for the dark matter which is based completely in known physics and which presents several possible observational signatures. In this model the dark matter is composed of dense nuggets of baryonic matter and antimatter in a colour superconducting state. If these object are sufficiently massive their low number density will make them effectively dark in the sense that collisions with visible matter become infrequent. This work presents the basics of dark matter as a colour superconductor and then uses the physical properties of the quark nuggets to extract observational consequences.

This study investigated the associations between emotion recognition ability and autistic traits in a sample of non-clinical young adults. Two hundred and forty nine individuals took part in an emotion recognition test, which assessed recognition of 12 emotions portrayed by actors. Emotion portrayals were presented as short video clips, both with and without sound, and as sound only. Autistic traits were assessed using the Autism Spectrum Quotient (ASQ) questionnaire. Results showed that men had higher ASQ scores than women, and some sex differences in emotion recognition were also observed. The main finding was that autistic traits were correlated with several measures of emotion recognition. More specifically, ASQ-scores were negatively correlated with recognition of fear and with recognition of ambiguous stimuli.

We give a report on the Sturm-Liouville problem defined on semi-infinite interval. Here as an extension of the Fourier expansion, we have a Parseval equality involving a Fourier integral with respect to a spectral function rho. This function rho is also related to Titchmarsh-Weyl m-function m(lambda) giving L2 solutions of the problem. The spectrum can be viewed as nonconstant points of the spectral function. Following Titchmarsh¡¦s monograph, we shall investigate the nature of the spectrum associated with different asymptotic behaviors of the potential function q, namely, when q¡÷¡Û, q¡÷0 or q¡÷-¡Û.

For the 2-D system of wave motion, consider a free surface progressive gravity wave train propagating over a random ripple seabed and there will be an interaction between surface wave and seabed. By spectrum analysis, getting the components of ripple seabed to make a Fourier form and a perturbation expansion procedure will be developed to second order to solve the flow field. Because the different type of spectrum will make different ripple seabed, the affect made by components of ripple seabed will change with the type and it¡¦s bandwidth, and the resoults predicted in model of this paper can become systematic .It is helpful for design of engineer.

Thesis (Ph. D.)--University of Texas at Austin, 2002. / Vita. Includes bibliographical references. Available also from UMI Company.

Rozprawa habilitacyjna--Uniwersytet Warszawski. / Includes bibliographical references (p. [69]-73).

Thesis (Ph. D.)--University of Michigan, 1933. / From Physical review, v. 42, December 15, 1932.

Thesis (Ph. D.)--University of Michigan, 1928. / "Reprinted from Physical review ... vol. 34, no. 1, July 1, 1929."

Thesis (Ph. D.)--University of Michigan, 1931. / Cover title. Reprinted from an article, by Russell A. Fisher and S. Goudsmit, published in Physical review, v. 37, no. 9, May 1, 1931.

Thesis (Ph. D.)--University of Michigan, 1931. / From Physical review, v. 38, Sept. 1, 1931.