We calculate the overlap between two many-body wave functions for a superfluid film containing a vortex at shifted positions. Comparing the results to phenomenological theories, which treat vortices as point particles, we find that the results are consistent if the point-particle vortices are considered as under the action of the Magnus force and in weak interaction with sound waves of the supe...

PURPOSE This study was designed to test the relative efficacy of different combinations of intervention approaches when targeting speech production accuracy and phonological awareness skills. All children received individual speech therapy, a home program, and a small-group phonological awareness intervention. METHOD Sixty-five 4-year-olds with a developmental phonological disorder received t...

Experimental measurements of the peak pressure and sound exposure level (SEL) from underwater explosions collected 7 km off the coast of Virginia Beach, Virginia are presented. The peak pressures are compared to results from previous studies and a semi-empirical equation that is a function of measurement range and charge weight, and are found to be in good agreement. An empirical equation for S...

Young children’s productions of the words that they know often differ from adult productions of the same words in ways that are transcribed as substitutions or deletions of segments, as illustrated in the following table of forms produced by three children with phonological disorders who participated in a test of young children’s consistency of production or mis-production of different phonemes...

UNLABELLED Auditory processing and phonemic discrimination are essential for communication. TYPE OF STUDY Retrospective. AIM To evaluate auditory processing and phonemic discrimination in children with normal and disordered phonological development. MATERIAL AND METHODS An evaluation of 46 children was carried out: 22 had phonological disorders and 24 had normally developing speech. Dioti...

The rapid industrialization of Asian developing countries has pushed the need for more energy at the cost of environmental degradation. Though large industries are targeted for energy conservation and pollution prevention, small and medium scale industries (SMI) also contribute to significant pollution. This paper discusses the role of SMI in the economy, its energy consumption and impact on th...

When the surface of a sphere vibrates in any assigned manner the spherical sound waves which are propagated outwards can be represented by wellknown formulae provided that the motion is such that only small changes in air density occur. When the motion of the spherical surface is radial the velocity potential of the sound wave is <}> = r~1f{r-at),(1) where a is the velocity of sound and r is th...

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