New evidence for phonological processing during visual word recognition: The case of Arabic.

Lexical decision and naming were examined with words and pseudowords in literary Arabic and with transliterations of words in a Palestinian dialect that has no written form. Although the transliterations were visually unfamiliar, they were not easily rejected in lexical decision, and they were more slowly accepted in phonologically based lexical decision. Naming transliterations of spoken words was slower than naming of literary words and pseudowords. Apparently, phonological computation is mandatory for both lexical decision and naming. A large frequency effect in both lexical decision and naming suggests that addressed phonology is an option for familiar orthographic patterns. The frequency effect on processing transliterations indicated that lexical phonology is involved with prelexical phonological computation even if addressed phonology is not possible. These data support a combination between a cascade-type process, in which partial products of the grapheme-to-phoneme translation activate phonological units in the lexicon, and an interactive model, in which the activated lexical units feed back, shaping the prelexical phonological computation process. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Annular flow of two immiscible liquids I. Mechanisms

A study was made of the flow mechanisms of two immiscible liquids with a small density difference introduced at a horizontal-pipe inlet in initial concentric flow. Extent of the annular flow, its break-up mechanisms and the subsequent flow patterns encountered were investigated with the aid of high-speed photography. Annular-flow break-up was found to occur by one of two mechanisms: collapse of the core-liquid by varicose Rayleigh-type waves or rupture of the top-wall liquid-film, attenuated by the ascent of the lighter core-liquid. Flow patterns observed after break-up involve fine dispersions, slugs or stratified layers. Charts mapping flow-pattern zones show conditions under which annular-flow holds over a considerable extent.     

On Interpretation of ESCA Spectra with Application to Thymine and Other Molecules

1s binding energies are calculated for nitrogen atoms in thymine, pyrrole, adenine, and pyridine and for carbon atoms in thymine, adenine, pyrrole, and furan, and compared with experimental values. Calculations are performed in the framework of a perturbational model using CNDO molecular wave functions. Interactions of the 1s electron with its own atom are calculated exactly whereas interactions with neighbor atoms are calculated according to two levels of approximation: (1) Point charge approximation. (2) Rigorous calculations of integrals. Magnitudes of the different interactions and integrals are analysed. The questions of assignments of ESCA shifts and the errors inherent in the calculations are discussed.     

Attention mechanisms mediate the syntactic priming effect in auditory word identification.

Investigated the syntactic priming effect and the involvement of attention in that process by testing identification of white noise-masked Hebrew words. Targets were either syntactically congruent or syntactically incongruent with the structure of the sentence. Relative to a neutral condition, similar facilitation and inhibition was found for congruent and incongruent targets, respectively. When syntactic congruency was blocked, the inhibition was attenuated, whereas the facilitation remained the same. A 350-msec silent interstimulus interval between context and target increased inhibition without affecting facilitation. It is suggested that both the facilitation and the inhibition effects of syntactic priming are based on a veiled controlled process of generating expectations. The inhibition results from a controlled process of reevaluation that requires additional attention resources. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The structure of attitudes toward persons with disabilities: An Israeli validation of Siller's Disability Factor Scales—General (DFS—G).

Investigated the transcultural generalizability of the Disability Factor Scales—General (DFS—G) of J. Siller et al (1967) in 658 Jewish Israeli 11th and 12th graders and undergraduates. All Ss filled out a Hebrew translation of the 69-item DFS—G. Factor analysis of the Ss' responses provided support for the replicability of a major part of the DFS—G's structure. Also, a subsample of 114 Ss was administered the Edwards Social Desirability Scale while a subsample of 197 Ss was administered the Marlowe-Crowne Social Desirability Scale. Correlations between some scales of the DFS—G and these 2 measures are discussed as possible evidence that attitudes toward disability may reflect defenses against intra- and interpersonal pressures. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Enhanced inactivation of E. coli bacteria using immobilized porous TiO2 photoelectrocatalysis

Immobilized TiO₂ nanotube electrodes with high surface areas were grown via electrochemical anodization in aqueous solution containing fluoride ions for photocatalysis applications. The photoelectrochemical properties of the grown immobilized TiO₂ film were studied by potentiodynamic measurements (linear sweep voltammetry), in addition to the calculation of the photocurrent response. The nanotube electrode properties were compared to mesoporous TiO₂ electrodes grown by anodization in sulfuric acid at high potentials (above the microsparking potential) and to 1 g/l P-25 TiO₂ powder. Photocatalyst films were evaluated by high resolution SEM and XRD for surface and crystallographic characterization. Finally, photoelectrocatalytic application of TiO₂ was studied via inactivation of E. coli. The use of the high surface area TiO₂ nanotubes resulted in a high photocurrent and an extremely rapid E. coli inactivation rate of ∼10⁶ CFU/ml bacteria within 10 min. The immobilized nanotube system is proven to be the most potent electrode for water purification.     

Simple iterative receivers for MIMO LP-OFDM systems

In this paper,Lp-ofdm is combined with differentMimo schemes in order to improve performance in terms of diversity gain and to exploit capacity brought by theMimo channel. The original contribution is the development of a generic iterative receiver designed forLp mimo transmission able to work whatever the antenna configuration and the spatial coding scheme. By using a globalMmse criterion, interference terms coming from space-time coding and linear precoding are jointly treated leading to a very good trade-off between performance and complexity compared to trellis based detectors particularly for high order modulations, high number of antennas and/or large size of precoding matrices.