19 research outputs found
Critical behavior of the long-range Ising chain from the largest-cluster probability distribution
Monte Carlo simulations of the 1D Ising model with ferromagnetic interactions
decaying with distance as are performed by applying the
Swendsen-Wang cluster algorithm with cumulative probabilities. The critical
behavior in the non-classical critical regime corresponding to is derived from the finite-size scaling analysis of the largest cluster.Comment: 4 pages, 2 figures, in RevTeX, to appear in Phys. Rev. E (Feb 2001
Effectiveness of student response systems in terms of learning environment, attitudes and achievement
In order to investigate the effectiveness of using Student Response Systems (SRS) among grade 7 and 8 science students in New York, the How Do You Feel About This Class? (HDYFATC) questionnaire was administered to 1097 students (532 students did use SRS and 565 students who did not use SRS). Data analyses attested to the sound factorial validity and internal consistency reliability of the HDYFATC, as well as its ability to differentiate between the perceptions of students in different classrooms. Very large differences between users and non-users of SRS, ranging from 1.17 to 2.45 standard deviations for various learning environment scales, attitudes and achievement, supported the efficacy of using SRS
Overlapping phenotypes in autism spectrum disorder and developmental coordination disorder: A cross-syndrome comparison of motor and social skills
Motor and social difficulties are often found in children with an autism spectrum disorder (ASD) and with developmental coordination disorder (DCD), to varying degrees. This study investigated the extent of overlap of these problems in children aged 7-10 years who had a diagnosis of either ASD or DCD, compared to typically-developing controls. Children completed motor and face processing assessments. Parents completed questionnaires concerning their child’s early motor and current motor and social skills. There was considerable overlap between the ASD and DCD groups on the motor and social assessments, with both groups more impaired than controls. Furthermore, motor skill predicted social functioning for both groups. Future research should consider the relationships between core symptoms and their consequences in other domains
Extractive relations: natural resource use, indigenous peoples and environmental protection in Peru
Through ethnography of Ashaninka communities' involvement in timber extraction in Peruvian Amazonia and an engagement with recent discussions around Buen Vivir the article interrogates the common association between indigenous notions of ‘living well’ and environmental protection. A key insight is that Ashaninka individuals emphasise everyday well‐being and equality over the preservation of their surroundings. Older critiques of extractivism are used to show the recent advent of environmentalist discourses and highlight issues connected with emphasising ontological difference. The article concludes that Buen Vivir would be better framed as a desire, and right, to self‐determination rather than being associated with specific behaviours