703 research outputs found
Tracking pupil mobility over the pre-school and primary school period: evidence from EPPE 3-11
This report describes the ‘tracking’ of the EPPE 3-11 sample and then goes on to
examine the possible influence of mobility on EPPE 3-11 children’s cognitive progress
and social/behavioural development over both the pre-school and primary school period.
In the present research ‘mobility’ is defined as having changed pre-school or school
centre at least once.
The aims of the research are:
• To determine possible means of reducing attrition in a longitudinal sample - tracking
• To identify any likely predictors of mobility, that is, whether mobile individuals share
any defining characteristics;
• To investigate the effects of mobility when predicting children’s cognitive and
social/behavioural outcomes, controlling for other background factors;
• To investigate the effects of children’s mobility in terms of the academic effectiveness
of the schools attended and to which children moved
The influence of school and teaching quality on children’s progress in primary school
This report investigates the way school and classroom processes affect the cognitive
progress and social/behavioural development of children between the ages of 6 (Year 1)
and 10 (Year 5) in primary schools in England.
The research is part of the larger longitudinal study of Effective Pre-School and Primary
Education (EPPE 3-11) funded by the Department for Children, Schools and Families
(DCSF) that is following children’s cognitive and social/behavioural development from
ages 3 to 11 years. The EPPE 3-11 study investigates both pre-school and primary
school influences on children’s attainment, progress and social/behavioural
development. This report describes the results of quantitative analyses based on a subsample
of 1160 EPPE children across Year 1 to 5 of primary education. The research
builds on the earlier analyses of children’s Reading and Mathematics attainments and
social/behavioural outcomes in Year 5 for the full EPPE 3-11 sample (see Sammons,
2007a; 2007b), by investigating relationships between children’s outcomes and
measures of classroom processes, collected through direct observation of Year 5
classes in 125 focal schools chosen from the larger EPPE 3-11 data set. The analyses
also explore patterns of association between children’s outcomes and broader measures
of overall school characteristics derived from teacher questionnaires and Ofsted
inspection reports for this sub-sample of schools
Multi-Response Optimization For Industrial Processes
Process optimization is a very important point in modern industry. There are many classical optimization methods, which can be applied when some mathematical conditions are verified. Real situations are not very simple so that classical methods may not succeed in optimizing; as in cases when the optimization has several contradictory objectives (Collette, 2002).
The purpose of this work is to propose an optimization method for industrial processes with multiple inputs and multiple outputs (MIMO), for which the optimization objectives are generally contradictory and for which some objectives are not maximum or minimum but performance criteria.
The first step of this method is modeling each process response by a quadratic model. After
establishing the model, we use a simplified numerical optimization algorithm in order to determine
values of the parameters allowing optimizing the different responses, for MIMO processes. This method will also allow finding optimum target values for multiple inputs single output processes
Relationships between pupils’ self-perceptions, views of primary school and their development in Year 5
The Effective Pre-school and Primary Education Project 3-11 (EPPE 3-11) is a largescale longitudinal study of the impact of pre-school and primary school on children’s
developmental outcomes, both cognitive and social/behavioural. The study has been
following children from the start of pre-school (at age 3 years plus) through to the end of
primary school. Previous reports have focused on the educational and
social/behavioural outcomes of the EPPE 3-11 sample at the end of Year 5 (age 10) and
progress from the end of Year 1 (age 6) to the end of Year 5 (age 10) in primary school
(Sammons et al., 2007a; 2007b). The research also explored the predictive power of a
wide variety of child, parent, and family characteristics on attainment and development,
including the Early years home learning environment (HLE) during the years of preschool and aspects of the later HLE during Key stage 1 of primary school (Sammons et
al., 2002; 2003; Sylva et al., 2004).
This research builds on earlier reports (Sammons et al., 2007a; 2007b) by investigating
relationships between children’s outcomes in Year 5 and aspects of pupils’ selfperceptions and their views of primary school, measured in Year 5 (age 10) and in Year
2 (age 7) of primary school, controlling for background characteristics. These measures
have been derived from a self-report instrument completed by EPPE 3-11 children. The
analyses explored associations between children’s progress and development over time
and their self-perceptions and views of primary school
Pupils' self-perceptions and views of primary school in year 5
The Effective Pre-School and Primary Education 3-11 (EPPE 3-11) project investigates the impact of preschool, primary school and family on a range of outcomes for a national sample of approximately 2,800
children in England between the ages of 3 and 11 years. This Research Brief presents findings on pupils’
Self-perceptions (‘Enjoyment of school’, ‘Anxiety and Isolation’, ‘Academic self-image’ and ‘Behavioural
self-image’) and their views of different features of primary school (‘Teachers’ support for pupils’ learning’,
‘Headteacher qualities’ and ‘Positive social environment’) in Year 5. The analyses involved two steps: first,
differences in pupils’ Self-perceptions and Views of primary school measured at Year 5 were explored, in
relation to child, family and Home Learning Environment (HLE) characteristics. Second, the relationships
between pupils’ Self-perceptions and their Views of primary school and educational outcomes and
progress, both cognitive (Reading and Mathematics) and social/behavioural (‘Self-regulation’,
‘Hyperactivity’, ‘Pro-social’ and ‘Anti-social’ behaviour) were investigated. The analyses also explored
pupils’ Self-perceptions measured at a younger age (Year 2) and how they relate to children’s later
cognitive and social/behavioural outcomes in Year 5 and progress from Year 1 to Year 5
Evolution of the Band Structure of β-In2 S3−3x O3x Buffer Layer With Its Oxygen Content
The evolution of the band structure of β-In2 S3−3x O3x (BISO) thin films grown by physical vapor deposition, with composition x, is investigated using x-ray photoelectron spectroscopy. It is shown that the energy difference between the valence-band level and the Fermi level remains nearly constant as the optical band gap of the films increases. As a consequence, the difference between the conduction band level and the Fermi level increases as much as the optical band gap of the films. The calculation of the electronic affinity [ ] of the BISO thin films shows that it decreases linearly from 4.65 to 3.85 eV when x varies from 0 to 0.14. This will facilitate fabrication of efficient Cu(InGa)Se2-based solar cells having different absorber layer band gap
Optical Properties of Wide Band Gap Indium Sulphide Thin Films Obtained by Physical Vapor Deposition
Thin films of indium sulphide containing oxygen have been synthesized following a dry physical process. The constituents are deposited by thermal evaporation on glass substrates and then annealed under argon flow. Polycrystalline β-In2S3 containing oxygen thin films are obtained as soon as the temperature of annealing is between 623 and 723 K. In this paper, these β-In2S3 thin films have optically been studied. The optical band gap is direct. Its value is not dependent on the temperature of annealing. It is about 2.8 eV, which is higher than that of β-In2S3 single crystal. This high value is related to the presence of oxygen in the films. The extinction coefficient k and the refractive index n of the films have also been found independent of the annealing temperature. These optical properties make the films studied good candidates to be substituted to CdS in Cu(In,Ga)Se2 based solar cells
Extended Superscaling of Electron Scattering from Nuclei
An extended study of scaling of the first and second kinds for inclusive
electron scattering from nuclei is presented. Emphasis is placed on the
transverse response in the kinematic region lying above the quasielastic peak.
In particular, for the region in which electroproduction of resonances is
expected to be important, approximate scaling of the second kind is observed
and the modest breaking of it is shown probably to be due to the role played by
an inelastic version of the usual scaling variable.Comment: LaTeX, 36 pages including 5 color postscript figures and 4 postscript
figure
Bayesian Parameter Estimation with Prior Weighting in ALT Model
This paper provides an overview of the application of Bayesian inference to accelerated life testing (ALT) models for the concrete case of estimation by Maximum of Aposteriori (MAP) method in the case of constant stress levels. It studies the Bayesian inference over the accelerated life model as presented in [9]. It suites, integrates and generalizes the particular cases presented in [12] and [13]. Towards the end, weighting of the prior information according to data is integrated. The paper also illustrates an experimental example
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