Understanding teenagers' personal contexts to design technology that supports learning about energy consumption

Energy sustainability is prevalent in political and popular rhetoric and yet energy consumption is rising. Teenagers are an important category of future energy consumers, but little is known of their conceptions about energy and energy saving. We report on empirical research with two groups of teenagers. This is part of ongoing work to design learning technologies that support teenagers learn about personal energy consumption. In this paper we describe our analysis and methodology, which are shaped by the Ecology of Resources (EoR) design framework [Luckin, R. (2010). Re-designing learning contexts: Technology-rich, learner-centred ecologies. London and New York, NY: Routledge]. Our findings informed the development of an EoR model of the participants' personal context, which includes their world resources (people, tools, knowledge, skills, and environment) and their personal resources (conceptions, motivations and concerns around energy consumption). We discuss the range of methods we employed to understand learners' personal contexts. These findings contribute to our understanding of how to explore teenagers' personal contexts and have implications for the design of technology to support learning about personal energy consumption.     

Investigation of the association between all-trans-retinol dehydrogenase (RDH8) polymorphisms and high myopia in Chinese

Retinoic acid level in the retina/choroid is altered in induced myopia models. All-trans-retinol dehydrogenase (RDH8) is an important enzyme of retinoic acid metabolism. This study aimed to investigate the association of the RDH8 gene with high myopia. Three single nucleotide polymorphisms (SNPs) [RDH851 (rs2233789), RDH8E5a (rs1644731), and RDH855b (rs3760753)] were selected, based on the linkage disequilibrium pattern of RDH8 from a previous study, and genotyped for 160 Han Chinese nuclear families with highly myopic (−10 diopters or worse) offspring as well as in an independent group with 166 highly myopic cases (−10 diopters or worse) and 211 controls. Family-based association analysis was performed using the family-based association test (FBAT) package, and genotype relative risk (GRR) was calculated using the GenAssoc program. Population-based association analysis was performed using Chi-square test. These SNPs were in linkage equilibrium with each other. SNPs RDH851 (rs2233789) and RDH8E5a (rs1644731) both did not show association with high myopia. SNP RDH855b (rs3760753) demonstrated significant association (P=0.0269) with a GRR of 0.543 (95% confidence interval=0.304–0.968, P=0.038). The association became statistically insignificant, however, after multiple comparison correction. Haplotype analysis did not show a significant association either. Population-based association analysis also showed no significant association (P>0.05). Our family- and population-based data both suggest that the RDH8 gene is unlikely to be associated with high myopia in Chinese.     

How key transitions influence school and labour market careers of descendants of Moroccan and Turkish migrants in the Netherlands

Most educational research examines school outcomes at certain stages or at the final stage of the school career. This article looks at the entire school career and the transition to the labour market. It focuses on key transitions to identify the educational institutional arrangements that either help or hinder school and labour market success among the most disadvantaged groups in the Netherlands: young people of Moroccan and Turkish descent. The Dutch educational system is one of the most complicated school systems in Europe. Consequently, parents and children have to make many ‘choices’ when navigating it. Many of these key ‘choice’ moments are selection points, either because they are not real choices but dependent upon a teacher’s recommendation or because parents and pupils need a great deal of information about the school system in order to make a choice. This usually results in inequalities for the most disadvantaged groups. Because selection is disguised as ‘choices’, the structural inequalities of the Dutch school system are not usually perceived as blocking mechanisms for disadvantaged students     

Bookstores and Other Book Sources

Ruth Adler's A Day in the Life of the New York Times (Philadelphia: J.B. Lippincott, 1971—$6.77)

Les Daniels and The Mad Peck, Comix: A History of Comic Books in America (New York: Outerbridge &; Dienstfrey, 1971—$7.95)

75 Years of the Comics (Boston: Boston Book and Art Co., 1971—$9.95)

International Newspapers from University Microfilms (Ann Arbor, Michigan: University Microfilms, 1971—free on request, paper)

Chilton R. Bush (ed.) News Research for Better Newspapers (New York: American Newspaper Publishers Association Foundation, 750 Third Ave., 1965-date (annual), $2.00 or $3.00 each (set of last five volumes available for $10.00), paper)

Maurice F. Tauber and Hilda Feinberg's Book Catalogs (Metuchen, N.J.: Scarecrow Press, 1971—$15.00)

Martin E. Dann (ed.) The Black Press: 1827-1890 (New York: Putnam, 1971—$7.95)     

Modes of knowledge and patterns of power

The paper attempts to identify the extent to which modes of knowledge can be associated with different patterns of and assumptions about power.It discusses the meanings and scope of power itself, i.e. both within and beyond epistemic communities, as against ‘social robustness’ implying more democratic or inclusive forms of evaluation.It analyses the extent to which knowledge has shifted from an internalist perspective relying on the prestige of epistemic communities towards socially relevant assumptions resting within social contexts. It discusses the factors affecting types of power patterns, such as: the nature of sponsors’ objectives and the uses to which they might put knowledge; epistemic characteristics; the nature of the resource required, and the stage of finalisation reached. It sketches the range of models of sponsorship to which knowledge is subjected – from that of the free standing and autonomous individual through different patterns of sponsorship to the directly managed.It attempts to link these classifications to a range of empirical examples, including the power of knowledge in government and in crossing the boundaries between universities and industry.In discussing the reciprocal relationships between power and knowledge, it accepts that power affects the identification, use and transmission of knowledge. It is concerned, however, to question overdetermined perspectives of the relationships between knowledge and power whose mutual impacts may be strong but not easily predicted or defined.     

Scaling the cricket pitch to fit junior players

ABSTRACT

Studies in several sports have shown the benefits of adapting the playing environment to fit junior players. Frequently the changes are pragmatic choices based on space constraints or existing line markings, or the result of simple scaling based on stature. In this study, a method of scaling the cricket pitch length is presented which is based on the age-specific size and performance of the bowlers and batters. The objective was a pitch length which enabled young bowlers to bowl good length deliveries while releasing the ball at a more downward angle, similar to elite bowlers. The steeper release angle has the benefit of reducing the sensitivity of the ball flight distance to the variability of ball release. Based on data from county standard under-10 and under-11 players a pitch length of 16.22 yards (14.83 m) was calculated, 19% shorter than previously recommended for under-11s in England. A shorter pitch also increases the temporal challenge for batters, encouraging a wider variety of shots and improved anticipation skills. Pitch lengths scaled in this way to fit the players’ abilities as they develop will enable a more consistent ball release by bowlers and more consistent temporal demand for batters.     

A comparison between the WISC and WISC-R among educable mentally retarded students

The study compared differences and similarities between WISC and WISC-R scores for 48 ten- and thirteen-year-old EMR students, who were matched according to sex and race. The WISC-R yielded significantly lower VS, PS, and FS IQ scores than the WISC for this predominantly rural Georgia population. The FS IQ scores from the WISC-R averaged 7.5 points lower than the WISC FS IQs, with similar differences noted for VS and PS scores. There was no significant difference in FS IQs between the two age groups. Results suggest that many children classified as “Borderline” or slightly above by the WISC will be classified as “Mentally Deficient” by the WISC-R.