Showing papers on "Unitary state published in 1973"

Social work practice: a unitary approach

Abstract: Outlines the theoretical bases, functional concepts, and operational strategi of social work.

Symmetry-adapted perturbation expansions using unitary transformations

Abstract: A new method is devised to include the symmetry in perturbation series, in case the unperturbed hamiltonian has a lower (or different in general) symmetry than the whole problem. We define a unitary transformation such that the transformed unperturbed hamiltonian will have the same symmetry as the interacting system. This new unperturbed hamiltonian is hermitian and has indeed the same eigenvalues as the old one. Usual perturbation expansions can be thence utilized. The method is illustrated through some simple examples. The non-uniqueness of the defined unitary transformation is discussed.

The Defense of Federalism, or, the Attack on Unitary Government

Abstract: Economics is a young profession in compari son with the law, medicine, the natural sciences and many of the humanities. For many years it has been dominated by the professional societies of Great Britain, the United States, and a half dozen European countries. Now, there is a depth not only of academic teaching, but also of research and professional training to be found in dozens of nations, not least of them Canada. Each group is at least partly concerned with its own national or regional problems, with the publication of journals in its own languages, not only accepting its comparative isolation from the mass of profes sionals but also secure in the belief that in study ing its own problems, often with its own methods, it has something to offer the whole profession of more than local interest.

On the transformation functions from thejm-basis to thez-basis for the unitary representations ofSL2,C

Abstract: The covariance properties of the transformation functions from thejm-basis to thez-basis are written down and solved explicitly for irreducible unitary representations ofSL2,c belonging to the principal series. The explicit expression of these functions in terms of elementary functions is given. Some interesting completeness and orthogonality properties for the expansion of one- and two-variable complex functions are pointed out.

Two Modes of Association

Abstract: The subjects were presented unitary or nonunitary stimuli (formed of CVCs of low and middle association value) and then given recognition or recall tests equated for availability of the stimuli. For both association values, there was a significant interaction between the type of test and the stimulus conditions. The procedures provide a means of experimentally distinguishing unitary and nonunitary forms of association. The distinction between unitary and nonunitary forms of association has long been the subject of philosophical controversy, but the subject of little empirical research. Briefly defined, unitary coherence is that intrinsic relationship between the parts of a single stimulus which makes it appear as a single entity. Nonunitary coherence is that association or relationship which is formed between two separate stimuli. Working with perceptual stimuli, Asch, Ceraso, and Heimer (1960) compared the ability of subjects to form associations between forms and modes of nonsense figures. Unitary stimuli consisted of a form (a circle) composed of a mode (Xs or Ys). Nonunitary stimuli consisted of a form separated from the critical mode (a line circle and a row of Xs). In tests of recall, matching, and recognition, subjects scored higher with unitary than with nonunitary stimuli, thereby demonstrating a greater degree of coherence between form and mode with the unitary stimuli. Keppel (1962) replicated the results of Asch et al. but noted that the higher scores may have been the result of subjects in the unitary condition having to look in only one place, while subjects in the nonunitary condition had to look in two places. Thus, the greater proximity of the unitary stimuli might be responsible for the greater degree of association. He concluded that the concepts of unitary and nonunitary stimuli are both theoretically and experimentally unclear. It is possible experimentally to distinguish between unitary and nonunitary modes of coherence by introducing the distinction between the recognition and the recall of an association. In tests for the recognition of an association, one alternative among the possible choices consists of

Source encoding of images for efficient transmission

Abstract: A set of recursive rules which generate unitary transforms with a fast algorithm are presented. For each rule, simple relations give the number of elementary operations required by the fast algorithm. The common Fourier, Walsh-Hadamard, Slant, and Haar transforms are expressed with these rules. The framework developed allows the introduction of generalized transforms which include all common transforms in a large class of identical computation transforms. A systematic and unified view is provided for unitary transforms which have appeared in the literature and for a number of new transforms of potential interest. Generalization to complex and multidimensional unitary transforms is considered.