We determine the polarized gluon distribution ∆g(x) by a global analysis using current DIS and π0 asymmetry data. The π0 data from RHIC-Spin experiments provide a strong constraint on ∆g(x), so that its uncertainty is reduced. However, a sign problem appears in the analysis using π0 data, which means that positive and negative distributions are allowed for ∆g(x). These two types of solutions ar...

To address the paucity of current research on the development of creativity in deaf students, and to extend existing research to adolescents, the present study investigated divergent thinking, a method of assessing creativity, in both deaf and hearing adolescents. We assessed divergent thinking in two domains, figural and verbal, while also adjusting the instructional method in written format, ...

This review sought to determine the evidence base of augmentative and alternative communication (AAC) use with infants and toddlers with disabilities. The review identified 12 studies, involving 190 participants aged 36 months or younger. The majority of the studies investigated unaided AAC methods (e.g., gestures or sign language), with 42% of the studies also including aided AAC methods. Alth...

The languages developed by deaf communities are unique for using visual signs produced by the hand. In the present study, we explored the cognitive effects of employing the hand as articulator. We focused on the arbitrariness of the form-meaning relationship-a fundamental feature of natural languages-and asked whether sign languages change the processing of arbitrary non-linguistic stimulus-res...

Abstract This paper discusses a heuristic for generating a minimal number of true/complement patterns while still meeting Simultaneous Switching Output (SSO) requirements. The algorithm presented herein generates the patterns by construction, as opposed to selecting the patterns from a larger superset of possible patterns. This potentially offers advantages in time and memory, since no informat...

This paper is the second part of a two-part paper which introduces a general schema theory for genetic programming (GP) with subtree-swapping crossover (Part I (Poli and McPhee, 2003)). Like other recent GP schema theory results, the theory gives an exact formulation (rather than a lower bound) for the expected number of instances of a schema at the next generation. The theory is based on a Car...

We present a study on hyperon/anti-hyperon production asymmetries in the framework of the recombination model. The production asymmetries for Λ/Λ̄, Ξ/Ξ and Ω/Ω are studied as a function of xF . Predictions of the model are compared to preliminary data on hyperon/anti-hyperon production asymmetries in 500 GeV/c π−p interactions from the Fermilab E791 experiment. The model predicts a growing asymm...

Geometric crossover is a representation-independent definition of crossover based on the distance of the search space interpreted as a metric space. It generalizes the traditional crossover for binary strings and other important recombination operators for the most frequently used representations. Using a distance tailored to the problem at hand, the abstract definition of crossover can be used...

We present a study on hyperon/anti-hyperon production asymmetries in the framework of the recombination model. The production asymmetries for Λ/Λ̄, Ξ/Ξ and Ω/Ω are studied as a function of xF . Predictions of the model are compared to preliminary data on hyperon/anti-hyperon production asymmetries in 500 GeV/c π−p interactions from the Fermilab E791 experiment. The model predicts a growing asymm...

Segregation of homologous chromosomes during meiosis I depends on appropriately positioned crossovers/chiasmata. Crossover assurance ensures at least one crossover per homolog pair, while interference reduces double crossovers. Here, we have investigated the interplay between chromosome axis morphogenesis and non-random crossover placement. We demonstrate that chromosome axes are structurally m...