Foster-Miller's development of dry coal feed systems

Dry coal feeder systems developed for pressurized conversion processes were carried through a laboratory scale development program. These concepts include: (1) a centrifugal solids feeder; (2) a fluidized piston feeder; (3) a linear pocket feeder; and (4) a compacted coal plug feeder. Results of laboratory model testing of all concepts are reviewed

The Sequential Relationship of Body Oscillations in the Paper Wasp, \u3ci\u3ePolistes Fuscatus\u3c/i\u3e (Hymenoptera: Vespidae)

Three kinds of body oscillations by foundresses of the paper wasp, Polistes fuscatus, were analyzed from 100 h of videotapes of 17 multiple- and 16 single-foundress, preworker colonies. The three kinds of oscillations were observed to be temporally proximate only after prey returns. Their sequential occurrence was always antennal drumming (AD), abdominal wagging (AW), and lateral vibration (LV). This sequence is consistent with the hypothesized communicative meanings of ADs, AWs, and LVs. In particular, ADs may signal larvae to withold salivary secretions prior to receiving a liquid meal from an adult female; oscillations AW and LV may signal larvae to secrete and withold saliva, respectively, Additional studies are required to provide causal evidence of the communicative meanings of ADs, AWs, and LVs

MEASURING CHILDREN’S TIME USE: A REVIEW OF METHODOLOGIES AND FINDINGS

For those interested in child wellbeing, time use can provide an unusually objective measure of exactly what youth are doing. Before we can evaluate how well children are doing and why some are doing better than others, it is important to understand what they are doing, with whom, and in which social contexts and institutions. The report is intended to serve as a basic starting point for those interested in pursuing research in children and adolescents’ time use. It presents an overview of recent research on how American youth use time, focusing on methodological issues in measuring their time use and highlighting substantive findings from the literature. The procedures, advantages, and disadvantages of the three primary methods of measuring children’s time use, along with general issues which are relevant to all three methods, are discussed. Findings include general results about how youth divide their time between life’s domains such as work, maintenance, and leisure, relationships between time use and outcomes, and how youth differ in time use by race, class, gender, and age, with special attention paid to the area which has inspired the most time-use research, girls’ and boys’ household work.

Parents' lived experiences in the UK

This paper aims to investigate how, where and when parents are mediating their children’s media activities and with which particular device. It also explores whether parents are identifying specific help in this area and questions where they might seek advice (should they need it). Furthermore, it investigates parents' views regarding a pilot free online TV channel dedicated to advice through discussion with experts, parents and children. This small-scale study utilises charts and semi-structured interviews to explore the views of parents/carers to better understand lived experiences in relation to mediated digital parenting in the home. The methodology was also designed so that findings will inform further production of relevant content for a video-based resource. Although this study was limited in duration and scope, the results clearly support earlier research (Livingstone, 2018 and Ofcom, 20177) regarding the desperation parents feel through not being able to access appropriate advice in the way they want it. Furthermore, findings provide overwhelming support for the potential benefits of relevant predominantly visually-based online content/advice. The study raises questions about the empowerment of parents/carers in their own digital skills as a way of transferring confidence to their children, in navigating their way through the educational and social affordances and online safety issues through the use of accessible filmed content. The findings show that issues, such as, online safety and related behavioural pressures, remain key for parents and that there is an increasing need for more targeted support and ways to empower parents/grandparents with skills to enhance children’s digital agency. Furthermore, it offers an insight into ways in which styles of ‘enabling mediation’ in the digital age may be analyzed and reveals some of the day to day challenges parents face