Models of cosmological scalar fields often feature “attractor solutions” to which the system evolves for a wide range of initial conditions. There is some tension between this well-known fact and another well-known fact: Liouville’s theorem forbids true attractor behavior in a Hamiltonian system. In universes with vanishing spatial curvature, the field variables φ and φ̇ specify the system compl...

We investigate the occurrence of naked singularities in the spherically symmetric, plane symmetric and cylindrically symmetric collapse of charged null fluid in an antide Sitter background. The naked singularities are found to be strong in Tipler’s sense and thus violate the cosmic censorship conjecture, but not hoop conjecture. PACS number(s): 04.20.Dw That the end state of gravitational colla...

The objective of this review paper is to document extensive bedded indoor and outdoor pig production in the United States, which has expanded due to growing niche markets for natural and organic pork. Bedded hoop (tentlike) barns are used for finishing pigs and gestating sows. Seasonal outdoor farrowing and some indoor bedded farrowing systems coupled with group lactation are used also. Most na...

Damage to the medial meniscus root, for example by a complete radial tear, destroys the ability of the knee to withstand hoop strain, resulting in contact pressure increases and kinematic alterations. For these reasons, several techniques have been developed to repair the medial meniscus posterior root tear (MMPRT), many of which have shown complete healing of the repaired MMPRT. However, effor...

A methodology is introduced to test carbon-fiber-reinforced, hoop-wound composite cylinders for their biaxial mechanical properties under axial compression and hoop tension. The understanding of the behavior of these composites under biaxial loads is extremely important in the design of pulsed magnets. These composites are used as reinforcements for both the inner conducting layers and as an ov...

The purpose of this article is to clarify the Cauchy theory of the water waves equations as well in terms of regularity indexes for the initial conditions as for the smoothness of the bottom of the domain (namely no regularity assumption is assumed on the bottom). Our main result is that, following the approach developped in [1], after suitable paralinearizations, the system can be arranged int...

and Implications Four groups of early weaned pigs (19 days of age) from the ISU Southwest Swine Research Farm, Atlantic, IA were delivered to the Hoop Research Complex at the ISU Rhodes Research Farm, Rhodes, IA, in late May and early June 1998. Three groups of pigs (n=552) were placed in three (30–ft × 60 ft) deep bedded hoop structures. The fourth group (n=159) was placed in a mechanically ve...

We report the result of comparison between two reaction coordinates [on the potential energy surface of the first excited state (S(1))] produced by CASSCF and these energies recalculated by MRMP2 in the Z to E photoisomerization of penta-2,4-dieniminium (PDI) as the minimal model of the retinal protonated Schiff base (RPSB). One coordinate is the S(1) state minimum-energy-path (MEP) in mass-wei...

Abstract We analyse the dynamics of a basketball which rolls around rim hoop. The rolling steady motions are determined, and we investigate falling, slipping, instability. qualitative behaviour global is analysed possible trajectories categorised. effect initial conditions cause to fall inside or outside basket remain on rim.