This study examined the influence of age-related changes in vision on reading performance. Maximum reading speed was measured in groups of young (n = 16, mean age 21.6 years) and old (n = 14, mean age 68.3 years) subjects, all with acuities of 20/32 or better. A psychophysical procedure was used for measuring reading speed that has proven reliable and sensitive to visual factors in previous res...

We show that a group is GVZ-group if and only it flat group. the nilpotence class of bounded by number distinct degrees irreducible characters. also certain CM-groups can be characterized as GVZ-groups whose character values lie in prime field.

In the representation theory of finite groups of Lie type G(q) the unipotent characters play a fundamental role. Their degrees, seen as polynomials in q, are only dependent on the Weyl group of G(q). G. Lusztig (Astérisque 212 (1993) 191–203) has shown that one can define unipotent degrees for a general finite Coxeter group. In this article we construct, for the two infinite series of n-dimensi...

The chemical states of the ZnGeP(2):Mn interface which shows ferromagnetism above room temperature have been studied by photoemission spectroscopy. Mn deposition on the ZnGeP2 substrate heated to 400 degrees C induced Mn substitution for Zn and then the formation of metallic Mn-Ge-P compounds. Depth profile studies have shown that Mn 3d electrons changed their character from itinerant to locali...

We investigated the effective fusional range for written stimuli in children and adults in a natural viewing situation. We recorded binocular eye movements in children and adults during processing of stereoscopically presented words in a lexical decision task. The effect of disparity magnitude on ease of fusion caused decreased response accuracy, increasing numbers of fixations and increased tr...

The empirical investigation of human gesture stands at the center of multiple research disciplines, and various gesture annotation schemes exist, with varying degrees of precision and annotation effort. We present a gesture annotation scheme for the specific purpose of automatically generating and animating character-specific hand/arm gestures, but with potential general value. We focus on how ...

For any enumeration degree a let D a be the set of s-degrees contained in a. We answer an open question of Watson by showing that if a is a nontrivial Σ2-enumeration degree, then D a has no least element. We also show that every countable partial order embeds into D a.

One appealing vision is that a user should be able to design a motion trajectory by setting a small number of keyframes and constraints—and that the resulting motion should remain optimal in some way. Variations of this problem have appeared in computer graphics, biomechanics, and robotics (e.g., [9] [6] [8] [7] [4]) Despite great interest and research progress, however, optimization is still v...