In the underdoped, overdoped, Zn-doped or stripe-forming regions of high-Tc cuprate superconductors (HTSC), the superfluid density ns/m∗ at T → 0 shows universal correlations with Tc. Similar strong correlations exist between 2dimensional superfluid density and superfluid transition temperature in thin films of He in non-porous or porous media, and He/He film adsorbed on porous media. Based on ...

In 3 He superfluids quantized vorticity can take many different forms: It can appear as distributed periodic textures, as sheets, or as lines. In the anisotropic 3 He-A phase in most cases the amplitude of the order parameter remains constant throughout the vortex structure and only its orientation changes in space. In the quasi-isotropic 3 He-B phase vortex lines have a hard core where the ord...

Abst rac t : This paper discusses the kind of in fo rmat ion that must be present in a computer program that models the l i n g u i s t i c development of a c h i l d . A three stage model is presented that character izes the development of a na tu ra l l a n guage parser in a c h i l d of ages one, one and a h a l f , and two. Some data from ch i ld ren of these ages is presented. General prob...

Performance-based learning requires that a computer system have deep, exact knowledge of what a person is doing and what they already know about that task to determine what they should learn now. Lifelong learning requires that a computer system have broad, general knowledge over a number of years of what a person has learned to determine what they should learn now. Separately, these are each d...