Objectives: The purpose of this study was to evaluate the effectiveness of cognitive-behavioral play therapy on externalizing behavior problems among street and working children.  Methods: This experimental study was conducted with a pre- and posttest control group design. The statistical population of this study included girls aged 7-10 years who had been identified by the social workers...

We discuss diierent methods of reducing symmetry in CSPs where the variables correspond to the cells of a matrix, and both the rows and the columns of the matrix are interchangeable. Two basic approaches are considered: adding symmetry-breaking constraints to the model, and breaking symmetry during search. We also show how the two approaches can be combined in this case. We empirically compare ...

By looking for possible violation of the generalized second law, we might be able to find regions in the space of theories and states that do not allow holographic dual descriptions. We revisit three proposals for violation of the generalized second law in the simplest Higgs phase of gravity called ghost condensate. Two of them, (i) analogue of Penrose process and (ii) semiclassical heat flow, ...

A new mechanism is proposed to explain neutrino masses and their mixing via SU(1, 1) horizontal symmetry breaking. Based on this mechanism, the smallness of neutrino masses is realized and a hierarchical spectrum with large mixing is given. ∗) E-mail: [email protected] ∗∗) E-mail: [email protected]

The personal and scientific history of the discovery of spontaneous symmetry breaking in gauge theories is outlined and its scientific content is reviewed. 1 Talks presented at the Award Ceremony of the 1997 High Energy and Particle Physics Prize of the European Physical Society (Jerusalem, 24 August 1997) 2 E-mail: [email protected] 3 E-mail: [email protected]

There exists a connection between the creation of toroidal moments (TM) and the breaking of the one-cell relativistic crystalline symmetry (RCS) associated to any given crystal [1] into which non-trivial magnetoelectric coupling effects (ME) exist [2] . Indeed, in this kind of crystals, any interaction between a charge carrier and an elementary magnetic cell can breaks the RCS of this previous ...

The reduction of the E8 gauge theory to ten dimensions leads to a loop group, which in relation to twisted K-theory has a Dixmier-Douady class identified with the Neveu-Schwarz H-field. We give an interpretation of the degree two part of the etaform by comparing the adiabatic limit of the eta invariant with the one loop term in type IIA. More generally, starting with a G-bundle, the comparison ...

The Indian buffet process (IBP) is an exchangeable distribution over binary matrices used in Bayesian nonparametric featural models. In this paper we propose a three-parameter generalization of the IBP exhibiting power-law behavior. We achieve this by generalizing the beta process (the de Finetti measure of the IBP) to the stable-beta process and deriving the IBP corresponding to it. We find in...

While inorganic nature contains equal amounts of different chirality type molecules, living nature is chirally pure. This mirror asymmetry of the bioorganic world on the molecular level is one of the unsolved mysteries of biology. A number of approaches to the solution of this problem were developed. Biogenic approaches claim that the property of chiral purity was selected in the course of biol...

A correct understanding of the law of diminishing returns both as to its application, as well as to its statement as a principle, is fundamental in any study designed to measure the effect of increasing units of an input factor upon the output whether this output be in the form of plant growth or animal production. Immediately following Von Liebig's emphasis of the need by plants of various min...