perceives a constant object by vision despite changing sensations of light; he perceives a constant object by feel despite changing sensations of pressure; he perceives the same source of sound despite changing sensations of loudness in his ears. The hypothesis is that constant perception depends on the ability of the individual to detect the invariants, and that he ordinarily pays no attention...

Constant pressure valve, which has an axially symmetric structure, is essential component to supply the servo reference for aero-engine hydraulic mechanical control systems, and its performance directly impacts of system. This paper constructs a closed-loop disturbance rejection system constant valve based on linear incremental description method, in controlled object pressure, stabilization co...

The article is devoted to the research of place mathematical word problems in course mathematics primary school Ukraine. researchers define results study solving math problems, find out essence process form students’ ability solve that contain a constant. Among mentioned are fourth proportional, do proportional division and unknown number by two differences. paper deals with organization educat...

Abstract We address a problem that extends fundamental classical result of continuum mechanics from the time its inception, as well answers question in recent, modern nonlinear elastic theory dislocations. Interestingly, implication our latter case is qualitatively different well-established analog linear It if $$u\in C^2({\mathbb {R}}^n;{\mathbb {R}}^n)$$ <mml:math xmlns:mml="http://www.w3.org...

Spatial filters have been used as an easy and intuitive way to create smoothed disease maps. Birth weight data from New York State for 1994 and 1995 are used to compare the traditional filter type of fixed geographical size with a filter size of constant or nearly constant population size. The latter are more appropriate for mapping disease in geographic areas with widely varying population den...