Semantic fluency in primary school-age children with vision impairment

Purpose: Semantic fluency is potentially a useful tool for vocabulary assessment in children with vision impairment because it contains no visual test stimuli. It is not known whether in the primary school years children with vision impairment perform more poorly on semantic fluency tasks compared to their sighted peers. Method: We compared semantic fluency performance of two groups of 5- to 11-year-old British English speaking children—one group with vision impairment and one without. We also investigated within-group differences in performance, based on severity of vision impairment. We administered one category (animals) to children with vision impairment (n = 45) and sighted children (n = 30). Participants had one minute to respond. Responses were coded for accuracy, error type, clusters, and switches. Result: Correct responses increased with age within each group. Groups did not differ significantly on any outcome measure. Severity of vision impairment did not impact task performance. Conclusion: Results suggested that semantic fluency performance—at least for the category animals—is not different in children with vision impairment compared to sighted children. Findings also suggest that semantic fluency could be a suitable addition to the tools that speech-language pathologists use to assess language abilities in children with vision impairment

HRXRD study of the theoretical densities of novel reactive sintered boride candidate neutron shielding materials

Reactive Sintered Borides (RSBs) are novel borocarbide materials derived from FeCr-based cemented tungsten (FeCr-cWCs) show considerable promise as compact radiation armour for proposed spherical tokamak,[1],[2],[3],[4],[5]. Six candidate compositions (four RSBs, two cWCs) were evaluated by high-resolution X-ray diffraction (XRD), inductively coupled plasma (ICP), energy dispersive X-ray analysis (EDX) and scanning electron microscopy (SEM) to determine the atomic composition, phase presence, and theoretical density. RSB compositions were evaluated with initial boron contents equivalent to 25 at% 30 at%. All RSB compositions showed delamination and carbon enrichment in the bulk relative to the surface, consistent with non-optimal binder removal and insufficient sintering time. Phase abundance within RSBs derived from powder XRD was dominated by iron tungsten borides (FeWB/FeW2B2), tungsten borides (W2B5/WB) and iron borides. The most optimal RSB composition (B5T522W) with respect to physical properties and highest ρ/ρtheo had ρtheo = 12.59 ± 0.01 g cm-3 for ρ/ρtheo = 99.3% and had the weigh-in and post-sintered W : B : Fe abundance closest to 1 : 1 : 1. This work indicates that despite their novelty, RSB materials can be optimized and in principle be processed using existing cWC processing routes

The effects of size and proportion of residual forest on harvesting effort and habitat quality index of three animal species using ecosystem based management scenarios in boreal forest

La faune et la flore de la forêt boréale du Québec sont adaptées aux perturbations naturelles, plus particulièrement aux feux. L'approche écosystémique s'inspirant des dynamiques naturelles propose un avenir prometteur dans le développement des pratiques sylvicoles durables. Des études qui ont comparé les forêts résiduelles laissées par la récolte à celles laissées par les feux démontrent une différence significative entre la fréquence des îlots résiduels et leur configuration. Des différences qui ont probablement des impacts importants sur la faune et la flore de la région et sur l'approvisionnement en bois. Six scénarios spatiaux avec 100 répétitions ont été simulés avec le logiciel SELES. Parmi ceux-ci, dix répétitions qui ont atteint nos cibles ont été sélectionnés selon différentes tailles (3000 ha, 15000 ha, et 60000 ha), fréquences et configurations pour évaluer leurs impacts sur l'effort d'approvisionnement. De plus, les effets environnementaux basés sur l'indice de qualité d'habitat pour l'Orignal (Alces alces), le lièvre d'Amérique (Lepus americanus) et la martre d'Amérique (Martes americana) ont également été évalués. Les résultats de ce projet permettent de faire des recommandations quant aux effets de la taille et de la proportion de la forêt résiduelle, selon différentes taille de chantiers de récolte, sur les efforts d'approvisionnement en forêt dominée par l'épinette noire.\ud ______________________________________________________________________________ \ud MOTS-CLÉS DE L’AUTEUR : Épinette noire, aménagement écosystémique, taille des îlots résiduels, effort d'approvisionnement, qualité d'habitat

The Perceptions Of School Psychologists Regarding The Disproportionality In Special Education For Students Of Color: A Qualitative Phenomenological Study

Racial disproportionality in special education has been a problem of practice since Dunn called attention to it in 1968. Research has demonstrated the adverse effects on students including stigma, labeling, reduced access to high-quality educational opportunities, restrictive settings, and lower expectations and educational outcomes. Little research on disproportionality has examined how individual characteristics and societal factors intersect with specific school variables and contexts. Using disability critical race theory as a lens for exploration, this qualitative phenomenological study examined the phenomenon of disproportionality situated within a specific context to uncover how local factors may contribute to the incidence of disproportionality. Seven school psychologists from a suburban school district cited by the state for racial disproportionality in special education were interviewed to capture their lived experiences with the phenomenon. This study found five themes and eleven subthemes. Themes included lack of consistent pre-referral policies and practices; disparity patterns in the identification of students in the Open Choice population; staff perceptions in their low sense of self-efficacy to support students and perceived benefits of special education; bias; and disparity patterns in student externalizing behaviors and teacher response. Findings indicate the need for further allocation of resources to strengthen the pre-referral process and data collection, increased professional learning in the areas of intervention strategies and culturally responsive teaching practices, and leveraging of protective factors for struggling students

In Search of Professional Dispositions that Yield Cultural Relevance in Primary Grade Pedagogy: A Cautionary Tale of One Kindergarten Teacher

Primary grade teachers are challenged to establish firm learning foundations for all children, yet for many teachers cultural diversity makes this a complex pedagogical challenge. It is widely assumed that the success with which teachers meet this challenge is reflected in their dispositions toward diversity, and ultimately toward culturally relevant pedagogy as a professional orientation. This article describes a multi-year study of cultural relevance in early mathematics teaching. Using the case of one kindergarten teacher who exhibited positive dispositions toward cultural relevance, the authors examine factors that seemed to work against its adoption in her pedagogy

The Smart Cities Movement and Advancing the International Battle to Eliminate Homelessness - Barcelona as Test Case

Barcelona is a leader in the smart cities movement, a movement that aims to help cities deliver services to citizens more efficiently and economically as a way of making the city a more inviting and inclusive place to live and work. As with any city committed to forward-looking economic, social, and urban development initiatives, it is important to consider whether ambitious goals to reinvent the city include an agenda to solve the persistent problems that have faced major cities for decades, including affordable housing and caring for roofless or homeless men and women. This article ties together the challenges Barcelona faces in responding to the needs of its roofless citizens with Barcelona\u27s leadership in the global smart cities movement. The article describes the problems that Barcelona currently faces with roofless citizens, outlines the smart cities movement\u27s goals, expounds Barcelona\u27s smart cities initiatives, and examines how the smart cities movement offers opportunities for Barcelona to collaborate with peer cities internationally to create new and promising approaches to ending homelessness

Work-related learning: benefits and challenges

Universities are often criticised for not adequately preparing students for the workplace. In particular, the testing of taught content through examinations does not reflect the open nature of most roles, which require the application of knowledge. The BSc Mathematics course at Sheffield Hallam University embeds employability development and applications throughout the course. In 2018/19 two work-related group assessments were introduced, in which first year students work collaboratively with companies and other students on real-world problems. This paper discusses the implementation and evaluation of the two projects, including the challenges and benefits, as observed by staff, students and clients.</jats:p

Work-related learning: benefits and challenges

Universities are often criticised for not adequately preparing students for the workplace. In particular, the testing of taught content through examinations does not reflect the open nature of most roles, which require the application of knowledge. The BSc Mathematics course at Sheffield Hallam University embeds employability development and applications throughout the course. In 2018/19 two work-related group assessments were introduced, in which first year students work collaboratively with companies and other students on real-world problems. This paper discusses the implementation and evaluation of the two projects, including the challenges and benefits, as observed by staff, students and clients

Fate of Mercury in Synthetic Gypsum Used for Wallboard Production

This report presents and discusses results from Task 5 of the study ''Fate of Mercury in Synthetic Gypsum Used for Wallboard Production,'' performed at a full-scale commercial wallboard plant. Synthetic gypsum produced by wet flue gas desulfurization (FGD) systems on coal-fired power plants is commonly used in the manufacture of wallboard. The FGD process is used to control the sulfur dioxide emissions which would result in acid rain if not controlled. This practice has long benefited the environment by recycling the FGD gypsum byproduct, which is becoming available in increasing quantities, decreasing the need to landfill this material, and increasing the sustainable design of the wallboard product. However, new concerns have arisen as recent mercury control strategies developed for power plants involve the capture of mercury in FGD systems. The objective of this study is to determine whether any mercury is released into the atmosphere when the synthetic gypsum material is used as a feedstock for wallboard production. The project is being co-funded by the U.S. DOE National Energy Technology Laboratory (Cooperative Agreement DE-FC26-04NT42080), USG Corporation, and EPRI. USG Corporation is the prime contractor, and URS Group is a subcontractor. The project scope includes five discrete tasks, each conducted at various USG wallboard plants using synthetic gypsum from different FGD systems. The five tasks were to include (1) a baseline test, then variations representing differing power plant (2) emissions control configurations, (3) treatment of fine gypsum particles, (4) coal types, and (5) FGD reagent types. However, Task 5, which was to evaluate gypsum produced from an alternate FGD reagent, could not be conducted as planned. Instead, Task 5 was conducted at conditions similar to a previous task, Task 3, although with gypsum from an alternate FGD system. In this project, process stacks in the wallboard plant have been sampled using the Ontario Hydro method. The stack locations sampled for each task include a dryer for the wet gypsum as it enters the plant and a gypsum calciner. The stack of the dryer for the wet wallboard product was also tested as part of this task, and was tested as part of Tasks 1 and 4. Also at each site, in-stream process samples were collected and analyzed for mercury concentration before and after each significant step in wallboard production. The Ontario Hydro results, process sample mercury concentration data, and process data were used to construct mercury mass balances across the wallboard plants. Task 5 was conducted at a wallboard plant processing synthetic gypsum from a power plant that fires Eastern bituminous coal. The power plant is equipped with a selective catalytic reduction (SCR) system for NOX emissions control, but the SCR was bypassed during the time period the gypsum tested was produced. The power plant has a single-loop, open spray tower, limestone reagent FGD system, with forced oxidation conducted in a reaction tank integral with the FGD absorber. The FGD system has gypsum fines blow down as part of the dewatering step. Gypsum fines blow down is believed to be an important variable that impacts the amount of mercury in the gypsum byproduct and possibly its stability during the wallboard process. The results of the Task 5 stack testing, as measured by the Ontario Hydro method, detected that an average of 51% of the incoming mercury in the FGD gypsum was emitted during wallboard production. These losses were distributed as 2% or less each across the wet gypsum dryer and product wallboard dryer, and about 50% across the gypsum calciner. Emissions were similar to what Task 3 results showed, on both a percentage and a mass basis, for gypsum produced by a power plant firing bituminous coal and also having gypsum fines blow down as part of the FGD dewatering scheme. As was seen in the Task 1 through 4 results, most of the mercury detected in the stack testing on the wet gypsum dryer and kettle calciner was in the form of elemental mercury. In the wallboard dryer kiln, a more significant percentage of the mercury detected was in the oxidized form, particularly from the stack near the product discharge end of the kiln. However, this represented a very small percentage of the overall mercury loss