We characterize semiperfect modules, semiperfect rings, and perfect rings using locally projective covers and generalized locally projective covers, where locally projective modules were introduced by Zimmermann-Huisgen and generalized locally projective coves are adapted from Azumaya’s generalized projective covers.

In this paper, embeddings φ : M → P from a linear space (M,M) in a projective space (P,L) are studied. We give examples for dimM > dimP and show under which conditions equality holds. More precisely, we introduce properties (G) (for a line L ∈ L and for a plane E ⊂ M it holds that |L ∩ φ(M)| 6 = 1) and (E) (φ(E) = φ(E) ∩ φ(M), whereby φ(E) denotes the by φ(E) generated subspace of P ). If (G) a...

27 Using projective and objective measures, effects of rock music on emotion were investigated. Sixty students were randomly assigned to three conditions: hard rock, soft rock, and no music. One group listened to hard rock music while taking a projective test with five ink blots and an objective test with an Emotional Assessment Scale (EAS). The same procedure was used for the second group whil...

Menu systems are a standard interface technique in 2D desktop systems. Using menu systems in virtual reality systems however, is often problematic. In this paper, we present five techniques for menu selection in a 3D desktop virtual reality system: a 3D ray-casting technique, two projective techniques, one technique based on 3D positioning, and one technique based on the standard 2D desktop mou...

Art therapy has been applied in a variety of settings and with a large number of different client groups. It has been used for aesthetic, educational and clinical reasons. One of the main applications in the past has been to measure intelligence. However, the test-retest reliability was found to be poor. For example, intelligence or projective tests in clinical psychology, like the 'Rorschach i...

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Let K = Fq be a finite field. We introduce a family of projective Reed-Mullertype codes called projective Segre codes. Then we study their basic parameters and show that they are direct products of projective Reed-Muller-type codes. It turns out that the direct product of two projective Reed-Muller-type codes is again a projective Reed-Muller-type code. As a consequence we recover some results ...

We fill a gap in the systematically analyzed space of available techniques for state-of-the-art dependency parsing by comparing non-projective strategies for graph-based parsers. Using three languages with varying frequency of non-projective constructions, we compare the non-projective approximation algorithm with pseudo-projective parsing. We also analyze the differences between different enco...