龙虾怎样奏“乐”

自然界的动物在遭遇危险的时候,有各种各样的御敌招数,如毒蛇喷射毒液,章鱼喷出墨汁,电鳗放电,壁虎断尾求生等,还有的动物变换身形、虚张声势以吓唬敌人,而龙虾的防卫术则尤其别具一格。     

Adoptive Gay Father Families: A Longitudinal Study of Children’s Adjustment at Early Adolescence

Findings are presented from the second phase of a UK longitudinal study of 33 gay father, 35 lesbian mother, and 43 heterosexual parent families when their adopted children reached early adolescence. Participants predominantly lived in urban/suburban areas and were mostly white and well-educated. Standardized interviews, observations, and questionnaires of parental mental health, parent–child relationships, and adolescent adjustment were administered to parents, children, and teachers between 2016 and 2018. There were few differences between family types. However, adjustment problems had increased in all family types, with better parenting quality and parental mental health associated with fewer adjustment problems. The findings contribute to adoption policy and practice, and to theoretical understanding of the role of parental gender in child development.     

System simplification and control system design: Applications of the two-step iterative algorithm of Shoji

A detailed appraisal of the usefulness of reduced order systems produced by the two-step iterative algorithm of Shoji, J. Franklin Inst., Vol. 310, pp. 155–188, 1980; J. Franklin Inst., Vol. 313, pp. 267-271, 1982, in control system design is presented. In this appraisal, application of the method to four systems is considered and the results compared with those obtained by Marshall Int. J. Control, Vol. 31, pp. 677–690, 1980. Since two of the systems contain complex poles it was found necessary to adapt the Shoji method accordingly.     

The Vertex Project: Children Creating and Populating 3D Virtual Worlds

This paper outlines early investigations and initial outcomes of The Vertex Project, a school‐based action research project currently underway at Middlesex University. The project aims to explore the potential of Shared 3D Virtual Environments as creative learning tools for children, and looks into the challenges facing their practical integration into the primary classroom. Working in partnership with three primary schools, the project sets out to investigate the teaching and learning possibilities offered by Internet based 3D virtual environments, placing particular emphasis on the opportunities provided by the active participation of children in the design and construction of their own virtual worlds, and in the creation of avatars with which to represent themselves within these spaces.     

Use of rich-media resources by engineering undergraduates

The ability to develop and distribute digital teaching resources in higher education has developed rapidly over the last decade but research into how students use such resources has received limited attention. This study uses questionnaire results, Internet analytic data and semi-structured interviews to examine the use of three types of rich-media teaching resources – lecture podcasts, key-concept videos and tutorial solution videos – by engineering undergraduates. It is found that students value all three types of resource, especially for revision and as a supplement to lectures. Students find short, focused resources more useful than longer ones. Non-native English speakers and those with disabilities derive particular benefits from the resources. The effect of rich-media resources on lecture attendance is found to be small, and two-way.     

In‐Place and In‐Time

This article presents parallel and collaborative research and teaching practices that expand approaches to encountering site through the lenses of observation and performative drawing. These drawing practices record phenomena, whilst in their presence, through a designed temporal framework. This asks the drawer to observe over a duration of time and to record the world in motion. By spending an extended period of time in the presence of the phenomenon of our study, with active receptivity, our capacity to see shifts. Rather than the drawn outcomes of this observation recording a past time, the notion of experiential time – and an expanded present – is embedded in the act of drawing. These processes of observation and performative drawing allude to Edmund Husserl’s expression of a ‘thickened present’. The outcomes of this drawing practice demonstrate that observational techniques are embodied, relational, temporal and generative and so offer an alternative approach to site analysis. How this approach sits within the larger domain of spatial temporal relationships and forms of drawing are also considered.     

Concurrent and Longitudinal Contributions of a Brief Assessment of Reading‐Specific Executive Function to Reading Comprehension in First and Second Grade Students

Executive function (EF) contributes significantly to reading comprehension across the lifespan. Emerging research indicates domain‐specific assessments of EF are better suited for assessment and intervention in academic contexts. For example, graphophonological‐semantic cognitive flexibility (GSF), the ability to flexibly switch between the graphophonological and semantic components of printed words, contributes uniquely to reading comprehension across the lifespan, and GSF training improves children's reading comprehension. This study compared the original GSF measure, which is problematic for use in schools due to its subjectively interpreted explicit explanation component, to an abbreviated implicit task that is better suited for assessment of GSF in practical contexts in 68 first and second grade students. Implicit and explicit GSF contributed uniquely to reading comprehension concurrently and longitudinally when children (n = 31) were in third and fourth grades, beyond verbal ability, decoding ability, and matrix reasoning.