Generating cluster submodels from a multistage stochastic mixed integer optimization model using break stage

We present a scheme to generate clusters submodels with stage ordering from a (symmetric or a nonsymmetric one) multistage stochastic mixed integer optimization model using break stage. We consider a stochastic model in compact representation and MPS format with a known scenario tree. The cluster submodels are built by storing first the 0-1 the variables, stage by stage, and then the continuous ones, also stage by stage. A C++ experimental code has been implemented for reordering the stochastic model as well as the cluster decomposition after the relaxation of the non-anticipativiy constraints until the so-called breakstage. The computational experience shows better performance of the stage ordering in terms of elapsed time in a randomly generated testbed of multistage stochastic mixed integer problems.

Modified sorting technique to mitigate the collateral mortality of trawled school prawns (Metapenaeus macleayi)

The potential for changes to onboard handling practices in order to improve the fate of juvenile school prawns (Metapenaeus macleayi) discarded during trawling were investigated in two Australian rivers (Clarence and Hunter) by comparing a purpose-built, water-filled sorting tray against a conventional dry tray across various conditions, including the range of typical delays before the start of sorting the catch (2 min vs. 15 min). Juvenile school prawns (n= 5760), caught during 32 and 16 deployments in each river, were caged and sacrificed at four times: immediately (T0), and at 24 (T24), 72 (T72), and 120 (T12 0) hours after having been discarded. In both rivers, most mortalities occurred between T0 and T24 and, after adjusting for control deaths (<12%), were greatest for the 15-min conventional treatment (up to 41% at T120). Mixed-effects logistic models revealed that in addition to the sampling time, method of sorting, and delay in sorting, the weight of the catch, salinity, and percentage cloud cover were significant predictors of mortality. Although trawling caused some mortalities and comparable stress (measured as L -lactate) in all school prawns, use of the water tray lessened the negative impacts of some of the above factors across both the 2-min and 15-min delays in sorting so that the overall discard mortality was reduced by more than a third. When used in conjunction with selective trawls, widespread application of the water tray should help to improve the sustainability of trawling for school prawns.

Aplicação e análise de um programa customizado para a inclusão de jovens com deficiência intelectual em atividades laborais.

A presente pesquisa tem por objetivo implementar e avaliar um programa de inserção de jovens com deficiência intelectual em atividades laborais na Faculdade de Educação da Universidade do Estado do Rio de Janeiro.Para tal, foi utilizado o conceito de emprego customizado, que baseia-se na criação e/ou adaptação de postos de trabalho em empresas e outras instituições, se adequando a demanda do empregadorcom as habilidades do sujeito com deficiência, de forma a criar uma função que atenda às necessidades de ambas as partes. Um dos procedimentos da customização do trabalho é o Perfil Pessoal Positivo PPP, uma estratégia para traçar as habilidades e dificuldades dos jovens e adultos com deficiência, de forma a facilitar sua inserção no mercado de trabalho e outros espaços sociais. Participaram da pesquisa quatro jovens com deficiência intelectual, denominados treinandos indicados pelos professores de uma escola especial da rede pública do Estado do Rio de Janeiro, oriundos decursos de formação inicial e continuada em auxiliar de serviços gerais e auxiliar de contínuo-reprografia. Utilizou-se a metodologia de pesquisa-ação, com dados colhidos através de entrevistas semiestruturadas com os sujeitos com deficiência intelectual e os funcionários da Faculdade de Educação, assim como observação de seu desempenho. Como dados complementares, também foram realizadas entrevistas semiestruturadas com as mães dos jovens e os funcionários da Faculdade de Educação que aturaram diretamente com os treinandos. As entrevistas iniciais com os treinandos serviram como base para traçar seu o PPP, e determinar que atividades seriam mais adequadas para eles. Já as realizadas com os gestores da Faculdade, visaram compreender a dinâmica de funcionamento e as necessidades de trabalho da instituição.A elaboração do PPPpermitiu romperas barreiras impostas pelas exigências do mercado de trabalho, como escolarização mínima, capacitação, entre outras, pois, compreendendo as características do sujeito, é possível encontrar funções laborais que se adequem às suas singularidades e, ao mesmo tempo, atendam às necessidades do empregador. Concluímos, com base nos dados colhidos, que analisar o ambiente de trabalho com o objetivo de oferecer mão deobra adequada para a demanda é pré-requisito para a contratação e inclusão laboral de pessoas com deficiência. A customização do emprego contribui para a eliminação das barreiras atitudinais e preconceitos, aumentando as probabilidades de um desempenho e produção laboral satisfatória, beneficiando, tanto a instituição quanto o funcionário.

Erich Lessing: Arresting Time. Reportage Photography 1948-1973

Crawford, Alistair, Erich Lessing: Arresting Time. Reportage Photography 1948-1973 (New York: W. W. Norton & Co., 2005) RAE2008

BitBox!: A case study interface for teaching real-time adaptive music composition for video games

Real-time adaptive music is now well-established as a popular medium, largely through its use in video game soundtracks. Commercial packages, such as fmod, make freely available the underlying technical methods for use in educational contexts, making adaptive music technologies accessible to students. Writing adaptive music, however, presents a significant learning challenge, not least because it requires a different mode of thought, and tutor and learner may have few mutual points of connection in discovering and understanding the musical drivers, relationships and structures in these works. This article discusses the creation of ‘BitBox!’, a gestural music interface designed to deconstruct and explain the component elements of adaptive composition through interactive play. The interface was displayed at the Dare Protoplay games exposition in Dundee in August 2014. The initial proof-of- concept study proved successful, suggesting possible refinements in design and a broader range of applications.

Sleep Patterns in Elementary School Children (Grades 2-5) and Adolescents (Grade 10)

Background: To date, there is limited research examining sleep patterns in elementary school children. Previous researchers focused on parental responses rather than student responses to determine factors that affect sleep. The presented study surveyed sleep patterns and examined external factors affecting total sleep time among elementary school children and adolescents. Methods: Students in grades 2-5 (n=885) and grade 10 (n=190) enrolled in a public school system in the Northeast, completed a district administered survey that included questions on sleep duration and hygiene. Results. Average reported sleep duration decreased with increasing grade level. Children in grades 2-5 woke up earlier (31.7-72.4%) and on their own in comparison to adolescents in grade 10 (6.8%). Significantly shorter sleep durations were associated with having a television (grades 2, 4, 5, p< 0.01) or a cell phone in the room (grades 3, 4; p < 0.05), playing on the computer or video games (grades 3, 4, p<.001) before going to bed. In contrast, students in grade 2, 3, & 4 who reported reading a book before going to bed slept on average 21 minutes more per night (p=.029, .007, .009, respectively). For tenth graders, only consumption of energy drinks led to significant reduction in sleep duration (p<.0001). Conclusion. Sleep is a fundamental aspect in maintaining a healthy and adequate life style. Understanding sleep patterns will assist parents, health care providers, and educators in promoting quality sleep hygiene in school-aged children.

Longitudinal study of changes in body mass index, anthropometric measures, dietary intake and physical activity in cohorts of school-going Irish adolescents

The prevalence of obesity worldwide has increased dramatically over the last few decades. Poor dietary habits and low levels of exercise in adolescence are often maintained into adulthood where they can impact on the incidence of obesity and chronic diseases. A 3-year longitudinal study of anthropometric, dietary and exercise parameters was carried out annually (2005 - 2007) in 3 Irish secondary schools. Anthropometric measurements were taken in each year and analysed longitudinally. Overweight and obesity were at relatively low levels in these adolescents. Height, weight, BMI, waist and hip circumferences and TST increased significantly over the 3 years. Waist-to-hip ratio (WHR) decreased significantly over time. Boys were significantly taller than girls across the 3 years. A 3-day weighed food diary was used to assess food intake by the adolescents. Analysis of dietary intake data was determined using WISP©. Mean daily energy and nutrient intakes were reported. Mean daily energy and macronutrient intakes were analysed longitudinally. The adolescents’ diet was characterised by relatively high saturated fat intakes and insufficient fruit and vegetable consumption. The dietary pattern did not change significantly over the 3 years. Boys consumed more energy than girls over the study period. A validated questionnaire was used to assess physical activity and sedentary activity levels. Boys were substantially more active and had higher energy expenditure estimates than girls throughout the study. A significant longitudinal decrease in physical activity levels among the adolescents was observed. Both genders spent more than the recommended amount of time (hrs/day) pursing sedentary activities. The dietary pattern in these Irish adolescents is relatively poor. Of additional concern is the overall longitudinal decrease in physical activity levels. Promoting consumption of a balanced diet and increased exercise levels among adolescents will help to reduce future public health care costs due to weight-related diseases.

"It is Quietly Chaotic. It Confuses Time"*: Final Report of Excavations at the Bordley-Randall Site in Annapolis, Maryland, 1993-1995 (18AP50)

*This extract is from Gay P. Crowther's description of the Randall Court pathway (Cowther 1985).

A systematic review of the effect of dietary exposure that could be achieved through normal dietary intake on learning and performance of school-aged children of relevance to UK schools

The aim of the present review was to perform a systematic in-depth review of the best evidence from controlled trial studies that have investigated the effects of nutrition, diet and dietary change on learning, education and performance in school-aged children (4-18 years) from the UK and other developed countries. The twenty-nine studies identified for the review examined the effects of breakfast consumption, sugar intake, fish oil and vitamin supplementation and 'good diets'. In summary, the studies included in the present review suggest there is insufficient evidence to identify any effect of nutrition, diet and dietary change on learning, education or performance of school-aged children from the developed world. However, there is emerging evidence for the effects of certain fatty acids which appear to be a function of dose and time. Further research is required in settings of relevance to the UK and must be of high quality, representative of all populations, undertaken for longer durations and use universal validated measures of educational attainment. However, challenges in terms of interpreting the results of such studies within the context of factors such as family and community context, poverty, disease and the rate of individual maturation and neurodevelopment will remain. Whilst the importance of diet in educational attainment remains under investigation, the evidence for promotion of lower-fat, -salt and -sugar diets, high in fruits, vegetables and complex carbohydrates, as well as promotion of physical activity remains unequivocal in terms of health outcomes for all schoolchildren.

Constructing The Ethos of Tolerance and Respect in an Integrated School: The role of Teachers

This article seeks to explore how teachers develop tolerance and respect within an inclusive school
in Northern Ireland. Drawing on interviews and observation of 18 teachers, it will be shown that
teachers’ own personal values and assumptions exert a defining influence on the school ethos. It will
be argued that if teachers are not accorded the time and space to develop an understanding
of their own values and beliefs then there is the potential for schools to simply reinforce the psychological
barriers which sustain division.

Perceptions of stressful life events in Northern Irish school children: a longitudinal study.

Adults’ perceptions of stressful life events have been acknowledged as important moderators of the stress adjustment relationship. Until recently, however, there has been a lack of research on children's perceptions of negative life events. This study assesses children's own perceptions of the stressfulness of negative familial, academic and social events as well as events related to the political conflict in Northern Ireland. Method: Developmental changes in children's perceptions of events are traced over time. One hundred and sixty 8-year-old children completed a self-report measure of the perceived stressfulness of a range of negative life events. The sample was drawn from schools in the Greater Belfast area to include children of both genders, primary religious affiliations in Northern Ireland (i.e., Protestant and Roman Catholic) and of varying socio-economic status. Three years later, 113 of these children, then aged 11, were traced through the school system and completed the same measure. Results: Children's perceptions of stressful events are related to a host of social factors. Girls viewed many negative events as more stressful than their male counterparts. Roman Catholic and Protestant children differed in their perceptions of conflict-related events. Perceptions of various types of negative experiences were differentially related to socio-economic status and age. Conclusion: Personal, social and situational factors differentially determine children's perceptions of negative life experiences.

Pupil participation in school life: an approach from the educational community

The Convention on the Rights of the Child (CRC, 1989) is currently the most ratified international treaty. Several authors have highlighted its potential for both a moral education and citizenship. However, paradoxically, different studies report its limited or occasional incorporation into school practices. This article explores experiences of participation in schools,the third P of the CRC, from the plurality of voices and actors of the educational community,by means of 14 discussion groups in 11 autonomous communities in Spain. Discourse analysis evidence low levels of student participation in school life. But, at the same time, a favorable educational environment for the development of projects that contribute to child participation is found, as well as for the incorporation of the CRC as a mover and a referential integrator of the different schools projects. However, it is also an educational background conductive to projects for its development, such as the incorporation of the CRC as a referential integrator of the schools projects.

Right-left discrimination among medical students: Getting it right all of the time?

Objective To determine medical students’ self awareness and ability to discriminate right from left; to identify characteristics associated with this ability; and to identify any techniques used to aid discrimination. Design Questionnaire and psychometric study. Setting Undergraduate medical school, Northern Ireland. Participants 290 first year undergraduate students. Main outcome measure Medical students’ ability to discriminate right from left using the Bergen right-left discrimination test. Results Test scores ranged from 31 to 143 on a scale of 0- 144 (mean 112 (standard deviation 22.2)). Male students significantly outperformed female students (117.18 (26.96) v 110.80 (28.94)). Students who wanted to be surgeons performed significantly better than those who wanted to be general practitioners or medical doctors (119.87 (25.15) v 110.55 (27.36) v 112.50 (26.88)). The interaction effect for sex and career wishes was not significant (P=0.370). Students who used learnt techniques to help them discriminate scored significantly less than those who did not (P