The determination of velocities of stars from precise Doppler measurements is described here using relativistic theory of astronomical reference frames so as to determine the Keplerian and post-Keplerian parameters of binary systems. Seven reference frames are introduced: (i) proper frame of a particle emitting light, (ii) the star-centered reference frame, (iii) barycentric frame of the binary...

The object people perceive in an image can depend on its orientation relative to the scene it is in (its reference frame). For example, the images of the symbols × and + differ by a 45 degree rotation. Although real scenes have multiple images and reference frames, psychologists have focused on scenes with only one reference frame. We propose an ideal observer model based on nonparametric Bayes...

While the concept of the perceptual “pitch frame” resembles leading theories of pitch structure in music in some respects, it contains some innovative elements that are discussed in this commentary. Additionally, the commentary focuses on the question of whether the “pitch frame” is a temporal or atemporal construct. Submitted 2006 April 12; accepted 2006 April 19.

Political process theories of social movements have relied on a set of oppositions between culture and structure that has limited their capacity to capture the supraindividual, durable, and constraining dimensions of culture. The solution is not to abandon an emphasis on "objective" political structures in favor of potential insurgents' "subjective" perceptions of political opportunities, but r...

We investigate frame theory over the binary field Z2, following work of Bodmann, Le, Reza, Tobi and Tomforde. We consider general finite dimensional vector spaces V over Z2 equipped with an (indefinite) inner product (·, ·)V which can be an arbitrary bilinear functional. We characterize precisely when two such spaces (V, (·, ·)V ) and (W, (·, ·)W ) are unitarily equivalent in the sense that the...

in this paper we introduce and study besselian $g$-frames. we show that the kernel of associated synthesis operator for a besselian $g$-frame is finite dimensional. we also introduce $alpha$-dual of a $g$-frame and we get some results when we use the hilbert-schmidt norm for the members of a $g$-frame in a finite dimensional hilbert space.

The formulation of gravity in 3 + 1 dimensions in which the spin connection is the basic field (ω-frame) leads to a theory with first and second class constraints. Here, the Dirac brackets for the second class constraints are evaluated and the Dirac algebra of first class constraints is found to be the usual algebra associated to space-time reparametrizations and tangent space rotations. This e...

Background A growing body of public management literature sheds light on potential shortcomings to quality improvement (QI) and performance management efforts. These challenges stem from heuristics individuals use when interpreting data. Evidence from studies of citizens suggests that individuals’ evaluation of data is influenced by the linguistic framing or context of that information an...