Physical literacy: Importance, assessment and future directions

Physical literacy (PL) has become a major focus of physical education, physical activity and sports promotion worldwide. PL is a multifaceted conceptualisation of the skills required to fully realise potentials through embodied experience. Substantial financial investments in PL education by governments are underpinned by a wide range of anticipated benefits, including expectations of significant future savings to healthcare, improved physical and psychological well-being of the population, increased work-force productivity and raised levels of expertise in sport and exercise participation. However, disappointingly, scientific evidence showing the efficacy of PL interventions to successfully meet such high expectation is limited. We suggest that contradictions in research findings are due largely to limitations in movement assessment batteries and consequent discrepancies between measurements used to assess the immediate outcomes of PL programmes. Notably, there is no robust empirical tool for evidencing skill learning in the physical movement component of PL, education and this presents a serious limitation to the design of, and claims that can be made for, such interventions. Considering the parameters of proficient PL skills and the limitations of current evaluation instruments, possible future directions for developing empirical measures of PL movement skills are presented

We (Still) Need to Talk About \u3ci\u3eAereo\u3c/i\u3e: New Controversies and Unresolved Questions After the Supreme Court\u27s Decision

Recent judicial interpretations of U.S. copyright law have prompted businesses to design technologies in ways that enable the making and transmission of copies of works to consumers while falling outside the scope of the owner\u27s exclusive rights. The archetypal example is Aereo Inc.\u27s system for providing online access to broadcast television, which the Supreme Court has now ruled results in infringing public performances by Aereo. In previous work we urged the Court to develop a principled reading of the transmit clause focusing on the particular use rather than on the technical architecture of the delivery service (Giblin & Ginsburg, We Need to Talk About Aereo: Copyright-Avoiding Business Models, Cloud Storage and a Principled Reading of the \u27Transmit\u27 Clause ). Although we approach copyright law and policy from very different perspectives, we unite in the view that it is undesirable for legal outcomes to depend so heavily on technical design. Here, we evaluate the extent to which the Supreme Court was successful in reducing the law\u27s vulnerability to technological exploitation, consider the ramifications of the decision for other technology providers and users, and debate the merits and weaknesses of the decision

We Need to Talk About Aereo: Copyright-Avoiding Business Models, Cloud Storage and a Principled Reading of the Transmit Clause

Businesses are exploiting perceived gaps in the structure of copyright rights by ingeniously designing their technologies to fulfill demand for individual access through a structure of personalized copies and playback engineered in ways intended to implicate neither the public performance nor the reproduction rights. The archetypal example is Aereo Inc.’s system for providing online access to broadcast television. Aereo allows users to tune into individual antennae to stream TV to themselves, near-live, online. Aereo’s activities look a lot like the retransmission of broadcast signals, an activity which Congress has made very clear must result in remuneration for rightholders. However, Aereo’s careful design, which assigns each user her own antenna to generate an individual transmission copy from which she can access only the signals she could freely pick up from her own rooftop, means that it can also be argued that Aereo is simply enabling consumers to engage in legitimate non-remunerable uses. If the legality of this design is upheld by the Supreme Court this term, Aereo and subsequent comers will be able to offer consumers on-demand access to content, in a way that competes with licensed services, without any obligation to remunerate the rightholder. The implications of these business models are significant: in the case of audio and audiovisual works, for example, the on-demand access market may soon exceed the value of the retention copy-based market. When some participants are licensed but their competitors are not, the imbalance may provoke licensees to revise or forego their agreements. More generally, opportunistic engineering choices that obscure some courts’ perceptions of the impact on the on-demand access market risk removing evolving markets from the scope of copyright owners’ exclusive rights. Businesses that free-ride on copyrighted works also obtain an unfair competitive advantage over copyright licensees. The authors of this paper approach copyright from very different perspectives, but are united in the view that it is undesirable for legal outcomes to depend so heavily on technical design. This article addresses the U.S. caselaw that encouraged businesses such as Aereo to design technologies that could rival or even displace copyright-remunerative modes of making works of authorship available to the public. We consider the implications for copyright owners were Aereo and its supporters to succeed in their reading of the Copyright Act, as well as the implications for other technologies, particularly those involving “cloud” storage, were the broadcasters to prevail. Finally, each author offers her own analysis to demonstrate how it is possible to read the U.S. Copyright Act’s transmit clause in a way that does not make technological design determine the outcome. Either one of our readings, we argue, enables copyright’s exclusive rights to remain effective without discouraging technological innovation

We (Still) Need to Talk About Aereo: New Controversies and Unresolved Questions After the Supreme Court’s Decision

Recent judicial interpretations of U.S. copyright law have prompted businesses to design technologies in ways that enable the making and transmission of copies of works to consumers while falling outside the scope of the owner’s exclusive rights. The archetypal example was Aereo, Inc.’s system for providing online access to broadcast television. Aereo allowed users to tune into individual antennae to stream near-live TV to themselves, online. If this activity fell within the scope of the exclusive right of public performance, then it required the permission of right holders. The “Transmit Clause” of the U.S. Copyright Act’s definition of “to perform publicly” brings within the scope of the public performance right: [T]ransmitting or otherwise communicating a performance or display of the work . . . to the public, by means of any device or process, whether the members of the public capable of receiving the performance or display receive it in the same place or in separate places and at the same time or at different times. Holdings from the Second Circuit that the relevant performance was the specific transmission from each copy, and that those performances could not be public if made to only a single user, gave Aereo a blueprint for avoiding liability. It took up the invitation by designing a system incorporating thousands of dime-sized antennas. By temporarily assigning one to each user, from which she could access only the signals she could freely pick up from her own rooftop, Aereo’s service enabled individual copies to be made of each program and then transmitted on request to the user. Since each transmission was directed only to the single requesting user, Aereo argued it could not be considered made “to the public.

An investigation into the pedagogy of bridging class teachers within a mainstream school

A Research Report submitted to the Faculty of Education University of the Witwatersrand, Johannesburg in partial fulfilment of the requirements for the degree of Master of Education.This qualitative research aims to explore the constructs of Bridging Classes within a mainstream environment. The investigation focuses primarily on how the teacher works with what Bernstein (1973) considers key aspects to education relay, namely curriculum, pedagogy and assessment. Bridging Classes are provided for learners with moderate learning disabilities that may be caused by an attention deficit disorder or emotional upheaval due to chaotic home circumstances. The deconstruction process is conducted through the lens of Productive Pedagogy which Lingard, Hayes & Mills (2003) developed with four key components, namely, Intellectual Quality, Supportive Classroom Environment, Engagement with Difference, and Connectedness to the World. Productive Pedagogies support sociologists, Bernstein’s (2004) and Bourdieu’s (1999) belief that a universal pedagogy could ensure that learners from all backgrounds can access knowledge. The pedagogy applied in Bridging Class supports this notion by using a high quality curriculum but working at a slower pace, providing opportunities to consolidate concepts and integrating learners back into the mainstream when they are ready. Three teachers from Grade 1, 2, and 3 respectively were asked to participate in this research. The investigation comprised of interviews and observations of Maths and English lessons. The teachers were asked, during interviews, to reflect on their perceptions, experiences and pedagogy as Bridging Class teachers. The research applied a thematic analysis to identify patterns within the data set After coding, themes which emerged were the Cognitive and Academic Challenges Bridging Class learners experience. There are also suggested Strategies for Support to create a learning environment to enhance the academic and social outcomes for Bridging Class learners in a mainstream school. Key Words: Bridging Class, Mainstream, Productive Pedagogy, learning disabilities, perceptions, experience, support, strategies, learning environment.MT201

Benthic community metabolism in deep and shallow Arctic lakes during 13 years of whole–lake fertilization

Benthic primary production and oxygen consumption are important components of lake biogeochemical cycling. We performed whole–lake nutrient manipulations in Arctic Alaska to assess the controls of lake morphometry, nutrients, and light on benthic community metabolism. One deep, stratified lake (Lake E5) and one shallow, well–mixed lake (Lake E6) in the Alaskan Arctic were fertilized with low levels of nitrogen (56 mg N m−3 yr−1) and phosphorus (8 mg P m−3 yr−1) from 2001 to 2013. Benthic primary production was not stimulated by fertilization in either lake. In the deep lake, decreased water clarity is consistent with an increase in phytoplankton biomass during fertilization. Benthic GPP decreased by 7–47 mg C m−2 d−1 (not statistically significant) and benthic respiration increased from 87 ± 20 to 167 ± 9 (SE) mg C m−2 d−1. The areal hypolimnetic oxygen deficit increased by 15 mg O2 m−2 d−1 each year during the 13 yr of monitoring, apparently driven by lower (more negative) benthic NEP. In the shallow lake, phytoplankton concentration did not change with fertilization. As a result, the light environment did not change and benthic GPP did not decrease. Overall the data suggest that (1) benthic algae are not nutrient limited in either the deep or shallow lake, (2) lake morphometry modulated the overall nutrient impact on benthic metabolism by controlling the response of phytoplankton, and by extension, light and organic carbon supply to the benthos, (3) year–to–year variability in light attenuation explains considerable variability in benthic GPP between lakes and years, (4) correlations between both dissolved organic carbon concentrations and light attenuation coefficients (kd) between lakes suggests a regional control on light attenuation, and (5) the dissolved oxygen concentrations in the deep experimental lake are highly sensitive to nutrient enrichment.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/113758/1/lno10120.pd

Dynamic behavior of magnetic avalanches in the spin-ice compound Dy2_2Ti2_2O7_7

Avalanches of the magnetization, that is to say an abrupt reversal of the magnetization at a given field, have been previously reported in the spin-ice compound Dy$_{2}$Ti$_{2}$O$_{7}$. This out-of-equilibrium process, induced by magneto-thermal heating, is quite usual in low temperature magnetization studies. A key point is to determine the physical origin of the avalanche process. In particular, in spin-ice compounds, the origin of the avalanches might be related to the monopole physics inherent to the system. We have performed a detailed study of the avalanche phenomena in three single crystals, with the field oriented along the [111] direction, perpendicular to [111] and along the [100] directions. We have measured the changing magnetization during the avalanches and conclude that avalanches in spin ice are quite slow compared to the avalanches reported in other systems such as molecular magnets. Our measurements show that the avalanches trigger after a delay of about 500 ms and that the reversal of the magnetization then occurs in a few hundreds of milliseconds. These features suggest an unusual propagation of the reversal, which might be due to the monopole motion. The avalanche fields seem to be reproducible in a given direction for different samples, but they strongly depend on the initial state of magnetization and on how the initial state was achieved.Comment: 11 pages, 14 figure