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Processing Speed (process + speed)

Distribution by Scientific Domains

Engineering	40%

Selected Abstracts

Monitoring dyslexics' intelligence and attainments: A follow-up study

DYSLEXIA, Issue 1 2003
Michael Thomson
Abstract Intelligence (Wechsler Intelligence Scale for Children R and III, 1992) and written language attainment (BAS Word Reading, Neale Analysis of Reading, Vernon Graded Word Spelling) data for around 250 children attending a specialist school for dyslexics are presented. The Wechsler scales data show some evidence for ,ACID' and ,SCAD' profile effects on the subtests, with specifically weak Index scores on Freedom from Distractibility and Processing Speed. The relationship between intelligence and reading development is also examined, with evidence for significant correlations between intelligence and written language and a longitudinal study showing that there is no ,Matthew' or drop-off effect in intelligence. The attainments tests demonstrate that the widening gap between a dyslexic's chronological age and his/her attainments can be closed, and how attainments may be monitored within the context of ,growth curves'. The results are discussed in relation to recent reports (e.g. B.P.S. on Dyslexia, Literacy and Psychological Assessment) on the relationship between intelligence and attainments and it is concluded that this report could be seriously misleading for practising educational psychologists. Copyright © 2003 John Wiley & Sons, Ltd. [source]

The relative contributions of the Cattell-Horn-Carroll cognitive abilities in explaining writing achievement during childhood and adolescence,

PSYCHOLOGY IN THE SCHOOLS, Issue 2 2008
Randy G. Floyd
This study examined the relative contributions of measures of Cattell-Horn-Carroll (CHC) cognitive abilities in explaining writing achievement. Drawing from samples that covered the age range of 7 to 18 years, simultaneous multiple regression was used to regress scores from the Woodcock-Johnson III (WJ III; Woodcock, McGrew, & Mather, 2001) that represent CHC broad and narrow abilities onto the WJ III Basic Writing Skills and Written Expression cluster scores. At most age levels, Comprehension-Knowledge demonstrated moderate to strong effects on both writing clusters, Processing Speed demonstrated moderate effects on Basic Writing Skills and moderate to strong effects on Written Expression, and Short-Term Memory demonstrated moderate effects. At the youngest age levels, Long-Term Retrieval demonstrated moderate to strong effects on Basic Writing Skills and moderate effects on Written Expression. Auditory Processing, and Phonemic Awareness demonstrated moderate effects on only Written Expression at the youngest age levels and at some of the oldest age levels. Fluid Reasoning demonstrated moderate effects on both writing clusters only during some of the oldest age levels. Visual-Spatial Thinking primarily demonstrated negligible effects. The results provide insights into the cognitive abilities most important for understanding the writing skills of children during the school-age years. © 2008 Wiley Periodicals, Inc. [source]

The Midas Touch: Surface Processing With the UV Excimer Laser

LASER TECHNIK JOURNAL, Issue 1 2009
Drive Disruptive Innovations, Open Up Growth Markets
Very much like the ancient king Midas who as the legend tells was able to transform ordinary material into gold by the touch of his hand, today's excimer lasers are capable of transforming an unspecificmaterial layer into a high value, functional surface by their unique beam properties. Representing today's most cost-effective and dependable pulsed, ultraviolet (UV) laser technology, excimer lasers enable disruptive innovation in various growth industries as diverse as the markets for flat panel displays, automobiles, biomedical devices and alternative energies. It is the combination of two fundamental aspects, namely wavelength and output power, which determines the excimer laser's unique value adding potential in high tech industries which more than ever have to balance product size-efficiency and performance demands with process speed and production costs. This article will try to provide an insight into some key applications of the excimer laser. [source]

Group inspection of dependent binary processes

QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL, Issue 2 2009
Christian H. Weiß
Abstract We consider serially dependent binary processes, how they occur in several fields of practice. If such a process cannot be monitored continuously, because of process speed for instance, then one can analyze connected segments instead, where two successive segments have a sufficiently large time-lag. Nevertheless, the serial dependence has to be considered at least within the segments, i.e. the distribution of the segment sums is not binomial anymore. We propose the Markov binomial distribution to approximate the true distribution of the segment sums. Based on this distribution, we develop a Markov np chart and a Markov exponentially weighted moving average (EWMA) chart. We show how average run lengths (ARLs) can be computed exactly for both types of chart. Based on such ARL computations, we derive recommendations for chart design and investigate the out-of-control performance. A real-data example illustrates the application of these charts in practice. Copyright © 2008 John Wiley & Sons, Ltd. [source]

Position-dependent disturbance rejection using spatial-based adaptive feedback linearization repetitive control

INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL, Issue 12 2009
Cheng-Lun Chen
Abstract In this paper, we propose a new design of spatial-based repetitive control for a class of rotary motion systems operating at variable speeds. The open-loop system in spatial domain is obtained by reformulating a nonlinear time-invariant system with respect to angular displacement. A two-degree-of-freedom control structure (comprising two control modules) is then proposed to robustly stabilize the open-loop system and improve the tracking performance. The first control module applies adaptive feedback linearization with projected parametric update and concentrates on robust stabilization of the closed-loop system. The second control module introduces a spatial-based repetitive controller cascaded with a loop-shaping filter, which not only further reduces the tracking error, but also improves parametric adaptation. The overall control system is robust to model uncertainties of the system and capable of rejecting position-dependent disturbances under varying process speeds. Stability proof for the overall system is given. A design example with simulation is provided to demonstrate the applicability of the proposed design. Copyright © 2008 John Wiley & Sons, Ltd. [source]