5,307 research outputs found
Interaction between the FTO gene, body mass index and depression: Meta-analysis of 13701 individuals
Variations in farrow : with special reference to the birth weight of pigs
Includes index.Cover title
Testing for monotonicity in the Hubble diagram
General relativistic kinematics and the cosmological principle alone imply a
monotonicity constraint in the Hubble diagram, which we confront to present-day
supernova data. We use the running gradient method of statistical inference by
Hall & Heckman (2000). We find no significant departure from monotonicity. The
method seems well adapted and we recommend its use with future data.Comment: 5 pages, 3 figure
Control of flow separation and mixing by aerodynamic excitation
The recent research in the control of shear flows using unsteady aerodynamic excitation conducted at the NASA Lewis Research Center is reviewed. The program is of a fundamental nature, concentrating on the physics of the unsteady aerodynamic processes. This field of research is a fairly new development with great promise in the areas of enhanced mixing and flow separation control. Enhanced mixing research includes influence of core turbulence, forced pairing of coherent structures, and saturation of mixing enhancement. Separation flow control studies included are for a two-dimensional diffuser, conical diffusers, and single airfoils. Ultimate applications include aircraft engine inlet flow control at high angle of attack, wide angle diffusers, highly loaded airfoils as in turbomachinery, and ejector/suppressor nozzles for the supersonic transport. An argument involving the Coanda Effect is made that all of the above mentioned application areas really only involve forms of shear layer mixing enhancement. The program also includes the development of practical excitation devices which might be used in aircraft applications
The experience of education: the impacts of high stakes testing on school students and their families
This study lays bare Australian educator’s perspectives of NAPLAN testing and its unintended effects on schooling and student well-being.
The report draws on the experience of over 8,300 teachers and principals across the country, surveyed at the time of the NAPLAN testing in mid-May, 2012. It probes the impact of NAPLAN on testing, pedagogy and curriculum practice as well as the more difficult (and largely ignored) question of the impact on students’ health and well-being.
 
Introduction to papers on astrostatistics
We are pleased to present a Special Section on Statistics and Astronomy in
this issue of the The Annals of Applied Statistics. Astronomy is an
observational rather than experimental science; as a result, astronomical data
sets both small and large present particularly challenging problems to analysts
who must make the best of whatever the sky offers their instruments. The
resulting statistical problems have enormous diversity. In one problem, one may
have to carefully quantify uncertainty in a hard-won, sparse data set; in
another, the sheer volume of data may forbid a formally optimal analysis,
requiring judicious balancing of model sophistication, approximations, and
clever algorithms. Often the data bear a complex relationship to the underlying
phenomenon producing them, much in the manner of inverse problems.Comment: Published in at http://dx.doi.org/10.1214/09-AOAS234 the Annals of
Applied Statistics (http://www.imstat.org/aoas/) by the Institute of
Mathematical Statistics (http://www.imstat.org
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