Results 211 to 220 of about 290,735 (262)

Statistical inference on mixing proportion

Science in China Series A: Mathematics, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xu, Xingzhong, Liu, Fang
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Estimating the mixing proportion in a semiparametric mixture model

Computational Statistics & Data Analysis, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Seongjoo Song, Dan L. Nicolae, Jongwoo Song   +2 more
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Proportioning of Concrete Mixes

2019
Concrete mixtures are proportioned to have required workability and to assure that the hardened concrete will have the required properties. A concrete mix having excessive coarse aggregate lacks sufficient mortar to fill the void system, resulting in a non-cohesive and harsh mix.
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The Efficiency Bound of the Mixed Proportional Hazard Model

The Review of Economic Studies, 1994
Summary: The semiparametric efficiency bound of the mixed proportional hazard model is derived. The density of the model factors in such a way that there exists a complete sufficient statistic for the individual heterogeneity. The efficient score is shown to be the difference between the score in the parametric direction and its conditional expectation
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Mix proportions for high strength concrete

Construction and Building Materials, 1996
Abstract This paper deals with the plain concretes used in a study of fibre-reinforced concretes which required nominal mean 28 day cube strengths of 40, 60, 80, 100 and 120 N mm 2 . A standard 42.5 N Portland cement (BS 12) was used, which had a C 3 S C 2 S ratio of about 6.1, with a marine dredged sand and either a ...
M.R. Taylor, F.D. Lydon, B.I.G. Barr
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Proportional hazards mixed models

Advances in Methodology and Statistics, 2004
We describe our recent work on mixed effects models for right-censored data. Vaida and Xu (2000) provided a general framework for handling random effects in proportional hazards (PH) regression, in a way similar to the linear, non-linear and generalized linear mixed effects models that allow random effects of arbitrary covariates.
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Sole of Concrete—Mix Proportion

2014
Mix proportion is the sole of concrete. The performance, quality, and durability of concrete are directly or indirectly related to mix proportion. When the designed strength of a project is determined, what the field engineer should firstly consider is how to make a good mix proportion. So, how can we make a good mix proportion? What is our theoretical
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Concrete Optimized Mix Proportioning (COMP)

Cement and Concrete Research, 1971
Abstract A method of porportioning concrete mixes is presented, based on the concept of optimization, to give concrete of minimum cost. Aspects of workability and strength have been considered by expressing their functional dependence on the mix ingredients.
John P. Cannon, G.R. Krishna Murti
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NEW METHOD FOR PROPORTIONING CONCRETE MIX.

Proceedings of the Institution of Civil Engineers, 1983
The new method for proportioning concrete mix is less time-consuming than previous methods and consists of easy and direct computations of the relative amounts of the ingredients to be used in the concrete. On the basis of experimental data, the following strength V water/cement ratio equations have been developed: s = r exp(-2.274x) (based on water ...
IH HAMDANI, DW GREEN, I ALI, G RAMAKRISHNA   +3 more
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Mendelian Proportions in a Mixed Population

2004
Abstract The Hardy-Weinberg law is in many ways the cornerstone of mendelian genetics and forms an appropriate footnote for the early papers establishing mendelian inheritance. Although Hardy’s brief and clear summary is given here, the credit belongs equally to Weinberg, a physician who made numerous important contributions to genetics.
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