171 research outputs found
âI'm not trusted in the kitchenâ: food environments and food behaviours of young people attending school and college
Background Food behaviours are important in the context of health and obesity. The aim was to explore the environments and food behaviours of a sample of young people in the North East of England to further understanding of the relationship between eating behaviours and environmental context. Methods Focus groups were conducted with four groups of young people aged 16â20 years (n = 40; 28 male, 12 female) between November 2006 and June 2007. Analysis was informed by grounded theory methods and was an iterative process of identifying themes across the transcripts. Results Topics explored included: their main environment, home food responsibility and cooking, food outside of the home, where food was purchased/obtained and where food was eaten and with whom. Emergent themes included: the value for money in food purchases, time convenience, the car as a means of accessing food and health perceptions. Conclusions The complexities of the food environment were illustrated. This work has highlighted the importance of the home food environment and parents, and indicated the importance of factors such as time and cost in this age group's food choices. The behavioural norms around food behaviours merit further exploration for this population in transition between adolescence and adulthood
Determinants of changes in sedentary time and breaks in sedentary time among 9 and 12 year old children
The current study aimed to identify the determinants of objectively measured changes in sedentary time and sedentary fragmentation from age 9 - to age 12 years. Data were collected as part of the Gateshead Millennium Birth Cohort study from September 2008 - August 2009 and from January 2012 - November 2012. Participants were 9.3 (±0.4) years at baseline (n=508) and 12.5 (±0.3) years at follow-up (n=427). Sedentary behaviour was measured using an ActiGraph GT1M accelerometer. Twenty potential determinants were measured, within a socio-ecological model, and tested for their association with changes in sedentary time and the extent to which sedentary behaviour is prolonged or interrupted (fragmentation index). Univariate and multivariate linear regression analysis were conducted. Measurements taken during winter and a greater decrease in moderate-to-vigorous intensity physical activity (MVPA) over time were associated with larger increases in sedentary time (seasonality ÎČ:-3.03; 95% CI:-4.52,-1.54; and change in MVPA ÎČ:-1.68; 95% CI:-1.94, -1.41). Attendance at sport clubs was associated with smaller increases in sedentary time (-1.99; -3.44, -0.54). Girls showed larger decreases in fragmentation index (-0.52; -1.01, -0.02). Interventions aimed at decreasing the decline in MVPA and increasing/maintaining sport club attendance may prevent the rise in sedentary time as children grow older. In addition, winter could be targeted to prevent an increase in sedentary time and reduction in sedentary fragmentation during this season
Large and Unified Description of Quark and Lepton Mixing Matrices
We present a revised version of the so-called "yukawaon model", which was
proposed for the purpose of a unified description of the lepton mixing matrix
and the quark mixing matrix . It is assumed from a
phenomenological point of view that the neutrino Dirac mass matrix is
given with a somewhat different structure from the charged lepton mass matrix
, although was assumed in the previous model. As a result, the
revised model predicts a reasonable value with
keeping successful results for other parameters in as well as
and quark and lepton mass ratios.Comment: 13 pages, 3 figures, version accepted by EPJ
Comparison of sodium content of meals served by independent takeaways using standard versus reduced holed salt shakers: cross-sectional study
Background Takeaway food has a relatively poor nutritional profile. Providing takeaway outlets with reduced-holed salt shakers is one method thought to reduce salt use in takeaways, but effects have not been formally tested. We aimed to determine if there was a difference in sodium content of standard fish and chip meals served by Fish & Chip Shops that use standard (17 holes) versus reduced-holed (5 holes) salt shakers, taking advantage of natural variations in salt shakers used. Methods We conducted a cross-sectional study of all Fish & Chip Shops in two local government areas (nâ=â65), where servers added salt to meals as standard practice, and salt shaker used could be identified (nâ=â61). Standard fish and chip meals were purchased from each shop by incognito researchers and the purchase price and type of salt shaker used noted. Sodium content of full meals and their component parts (fish, chips, and fish batter) was determined using flame photometry. Differences in absolute and relative sodium content of meals and component parts between shops using reduced-holed versus standard salt-shakers were compared using linear regression before and after adjustment for purchase price and area. Results Reduced-holed salt shakers were used in 29 of 61 (47.5 %) included shops. There was no difference in absolute sodium content of meals purchased from shops using standard versus reduced-holed shakers (meanâ=â1147 mg [equivalent to 2.9 g salt]; SDâ=â424 mg; pâ>â0.05). Relative sodium content was significantly lower in meals from shops using reduced-holed (meanâ=â142.5 mg/100 g [equivalent to 0.4 g salt/100 g]; SDâ=â39.0 mg/100 g) versus standard shakers (meanâ=â182.0 mg/100 g; [equivalent to 0.5 g salt/100 g]; SDâ=â68.3 mg/100 g; pâ=â0.008). This was driven by differences in the sodium content of chips and was extinguished by adjustment for purchase price and area. Price was inversely associated with relative sodium content (pâ<â0.05). Conclusions Using reduced-holed salt shakers in Fish & Chip Shops is associated with lower relative sodium content of fish and chip meals. This is driven by differences in sodium content of chips, making our results relevant to the wide range of takeaways serving chips. Shops serving higher priced meals, which may reflect a more affluent customer base, may be more likely to use reduced-holed shakers
The UKIDSS Galactic Plane Survey
'The definitive version is available at www.blackwell-synergy.com .' Copyright Blackwell Publishing DOI: 10.1111/j.1365-2966.2008.13924.xThe UKIDSS Galactic Plane Survey (GPS) is one of the five near-infrared Public Legacy Surveys that are being undertaken by the UKIDSS consortium, using the Wide Field Camera on the United Kingdom Infrared TelescopePeer reviewe
The analysis of facial beauty: an emerging area of research in pattern analysis
Much research presented recently supports the idea that the human perception of attractiveness is data-driven and largely irrespective of the perceiver. This suggests using pattern analysis techniques for beauty analysis. Several scientific papers on this subject are appearing in image processing, computer vision and pattern analysis contexts, or use techniques of these areas. In this paper, we will survey the recent studies on automatic analysis of facial beauty, and discuss research lines and practical application
A Simple Statistical Mechanical Approach for Studying Multilayer Adsorption of Interacting Polyatomics
A simple statistical mechanical approach for studying multilayer adsorption
of interacting polyatomic adsorbates (k-mers) has been presented. The new
theoretical framework has been developed on a generalization in the spirit of
the lattice-gas model and the classical Bragg-Williams (BWA) and quasi-chemical
(QCA) approximations. The derivation of the equilibrium equations allows the
extension of the well-known Brunauer-Emmet-Teller (BET) isotherm to more
complex systems. The formalism reproduces the classical theory for monomers,
leads to the exact statistical thermodynamics of interacting k-mers adsorbed in
one dimension, and provides a close approximation for two-dimensional systems
accounting multisite occupancy and lateral interactions in the first layer.
Comparisons between analytical data and Monte Carlo simulations were performed
in order to test the validity of the theoretical model. The study showed that:
(i) the resulting thermodynamic description obtained from QCA is significantly
better than that obtained from BWA and still mathematically handable; (ii) for
non-interacting k-mers, the BET equation leads to an underestimate of the true
monolayer volume; (iii) attractive lateral interactions compensate the effect
of the multisite occupancy and the monolayer volume predicted by BET equation
agrees very well with the corresponding true value; and (iv) repulsive
couplings between the admolecules hamper the formation of the monolayer and the
BET results are not good (even worse than those obtained in the non-interacting
case).Comment: 38 pages, 12 figure
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Validation of the NANA (Novel Assessment of Nutrition and Ageing) touch screen system for use at home by older adults
Prospective measurement of nutrition, cognition, and physical activity in later life would facilitate early detection of detrimental change and early intervention but is hard to achieve in community settings. Technology can simplify the task and facilitate daily data collection. The Novel Assessment of Nutrition and Ageing (NANA) toolkit was developed to provide a holistic picture of an individual's function including diet, cognition and activity levels. This study aimed to validate the NANA toolkit for data collection in the community. Forty participants aged 65 years and over trialled the NANA toolkit in their homes for three 7-day periods at four-week intervals. Data collected using the NANA toolkit were compared with standard measures of diet (four-day food diary), cognitive ability (processing speed) and physical activity (self-report). BlandâAltman analysis of dietary intake (energy, carbohydrates, protein fat) found a good relationship with the food diary and cognitive processing speed and physical activity (hours) were significantly correlated with their standard counterparts. The NANA toolkit enables daily reporting of data that would otherwise be collected sporadically while reducing demands on participants;
older adults can complete the daily reporting at home without a researcher being present; and it enables prospective investigation of several domains at onc
Measurement of Atmospheric Neutrino Oscillations with the ANTARES Neutrino Telescope
The data taken with the ANTARES neutrino telescope from 2007 to 2010, a total
live time of 863 days, are used to measure the oscillation parameters of
atmospheric neutrinos. Muon tracks are reconstructed with energies as low as 20
GeV. Neutrino oscillations will cause a suppression of vertical upgoing muon
neutrinos of such energies crossing the Earth. The parameters determining the
oscillation of atmospheric neutrinos are extracted by fitting the event rate as
a function of the ratio of the estimated neutrino energy and reconstructed
flight path through the Earth. Measurement contours of the oscillation
parameters in a two-flavour approximation are derived. Assuming maximum mixing,
a mass difference of eV is
obtained, in good agreement with the world average value.Comment: 9 pages, 5 figure
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