Search

This systematic quantitative literature review was conducted to analyse and synthesise the extant corpus of knowledge on dialogic pedagogy within school settings, and thus identify theoretical and methodological gaps in the literature, which might suggest new avenues for research. A search of eight databases (2014-2020) revealed an initial pool of 2443 papers, which was reduced to 61 after screening for eligibility. An analysis of the 61 papers was framed around the following questions: What is the dominant mode of classroom discourse (monologic or dialogic) reported in the literature? Where is dialogic pedagogy being researched? Who are the dominant voices in the field? and Which year levels and school subjects have been examined using which methodologies? A key finding of the analysis was the absence of substantial research by Australian or New Zealand authors, specifically where mathematics education is concerned. Similarly, there is little investigation focusing on the early years of schooling. While some education areas have been well researched with regard to dialogic pedagogy, further work is required that focuses on areas such as the early years of schooling; non-science contexts; and the use of qualitative research methods. Keywords Systematic quantitative literature review * Dialogic pedagogy * Dialogic practices * Dialogic teaching, 1 Introduction The purpose of this systematic quantitative literature review (SQLR) (Pickering & Byrne, 2014) is to analyse the extant literature available (2015-2020 or 2014-2019 depending on search options available) [...]

Due to their chemical and physical properties, rare earth elements (REEs) are essential in modern applications such as energy conversion or IT technology. The increasing demand for these elements leads to strong incentives for REE recovery and induces the exploration of new, alternative sources for REEs. Accessing REEs from clay minerals, in our case kaolinite, by an elution process is a promising method. The present study investigates the potential application of REE recovery through elution with different mineral acids (HNO3, H2SO4, and HCl) in a microwave process. The material used in this study—residues from an industrial kaolin production process—contained 2.47 g/kg REEs which is a significant amount for REE recovery. The ability of various mineral acids to solubilize metals was studied to assess the REE content of this residual resource. Around 1.87 g/kg of REEs was eluted from industrial kaolinite residues in hydrochloric acid, 1.71 g/kg in sulfuric acid, and 1.13 g/kg in nitric acid. [ABSTRACT FROM AUTHOR]

A survey assessed the motivations of Chinese adults learning (N=512), living in Canada, English as a Second Language. Results revealed such motives as linguistic needs, basic skills, cultural awareness, social interaction, and resume-writing but found no differences in perceived motivation according to age, education level, or length of stay in Canada. (Author/CB)

Elevated carbon dioxide (eCO2) and rising temperatures will have far‐reaching effects on global plant‐insect interactions, yet their implications for future biological control programs are not fully understood. Studies have shown that elevated CO2 will affect insect feeding guilds differently and these responses can be predicted with some confidence. Water hyacinth, Pontederia crassipes Mart. (Pontederiaceae), is a native and representative species of the Del Plata wetlands (Argentina) that invades outside of its native environment. It is considered one of the world's worst aquatic weeds and a target for biological control. In this study, water hyacinth plants were grown under two CO2 concentrations – current (400 p.p.m.) or elevated (800 p.p.m.) –, with and without two biocontrol agents representing different feeding guilds, the leaf‐chewing Cornops aquaticum Brüner (Orthoptera: Acrididae) and the phloem‐feeding Megamelus scutellaris Berg (Hemiptera: Delphacidae). Under eCO2 concentration, photosynthetic rate, total dry weight, and relative growth rate of P. crassipes acclimated to eCO2 conditions and plants showed very little CO2 fertilization response in eutrophic water. Insect herbivory varied depending on feeding guilds at eCO2; however, P. crassipes growth responses increased when exposed to insect herbivory. Chewing herbivory by C. aquaticum was consistent across CO2 conditions, whereas the feeding by M. scutellaris increased substantially at eCO2. These results indicate that successful biological control of P. crassipes under conditions of elevated CO2 might rely on phloem‐feeding insects, with chewers playing a lesser role. [ABSTRACT FROM AUTHOR]

Systems engineering activities in the concept and development phases have evolved continuously for decades. The deployment of digital thread, digital engineering, MBSE approaches, and modeling and simulation techniques have driven part of this evolution. Despite this trend, requirements are still largely textual and expressed in natural language, and requirements engineering activities are still often document‐based. However, model‐based requirements‐engineering approaches have emerged in recent years and have demonstrated significant benefits, including improved requirements quality, less ambiguity, and early and efficient verification and validation. The goal of this paper is to present the current outcomes and perspectives of setting up an Integrated Digital Requirements Engineering approach as developed within our company. This approach seeks to optimize usability and maximize benefits to support end‐to‐end V&V activities while fully integrating into MBSE workflows. [ABSTRACT FROM AUTHOR]

Vertical connections, constructed using inquiry, give students the skills to reach new heights in both their academic and local communities. In this article, the authors present inquiry projects, developed by middle level teachers, to ensure that students use higher-level thinking skills to improve the community. Each project is connected to the previous year's to give students a deeper understanding of how research can help citizens build a sustainable community. Teachers work together to plan field studies and guide students in presenting their findings to others in the community using models, PowerPoint presentations, a web accessible database, and reports from field investigations. The projects are as follows: (1) healthy marine ecosystems--sixth grade; (2) interdisciplinary science: biodiversity and development--seventh grade; and (3) collaborating to create a better biosphere--eighth grade. (Contains 1 figure and 4 online resources.)

In epidemiological studies, dairy food consumption has been associated with minimal effect or decreased risk of some cardiometabolic diseases (CMD). However, current methods of dietary assessment do not provide objective and accurate measures of food intakes. Thus, the identification of valid and reliable biomarkers of dairy product intake is an important challenge to best determine the relationship between dairy consumption and health status. This review investigated potential biomarkers of dairy fat consumption, such as odd-chain, trans- and branched-chain fatty acids (FA), which may improve the assessment of full-fat dairy product consumption. Overall, the current use of serum/plasma FA as biomarkers of dairy fat consumption is mostly based on observational evidence, with a lack of well-controlled, dose–response intervention studies to accurately assess the strength of the relationship. Circulating odd-chain SFA and trans-palmitoleic acid are increasingly studied in relation to CMD risk and seem to be consistently associated with a reduced risk of type 2 diabetes in prospective cohort studies. However, associations with CVD are less clear. Overall, adding less studied FA such as vaccenic and phytanic acids to the current available evidence may provide a more complete assessment of dairy fat intake and minimise potential confounding from endogenous synthesis. Finally, the current evidence base on the direct effect of dairy fatty acids on established biomarkers of CMD risk (e.g. fasting lipid profiles and markers of glycaemic control) mostly derives from cross-sectional, animal and in vitro studies and should be strengthened by well-controlled human intervention studies. [ABSTRACT FROM AUTHOR]

Salvinia minima Baker (Salviniaceae) has been recorded for the first time in Africa. This South American native macrophyte is highly invasive and damaging, costing millions of dollars to control in the USA, and has the potential to invade many of southern Africa's waterbodies. Field surveys have confirmed the presence of S. minima from four sites in South Africa, with the largest invasion occurring on the highly polluted Hartbeespoort Dam, north east of the country's capital. Salvinia minima has been targeted for biological control in South Africa, using the weevil, Cyrtobagous salviniae, which is undergoing host specificity testing under quarantine conditions. [ABSTRACT FROM AUTHOR]