Results 51 to 60 of about 233,915 (272)
The Garman-Klass volatility estimator revisited [PDF]
, 2009 The Garman-Klass unbiased estimator of the variance per unit time of a zero-drift Brownian Motion B, based on the usual financial data that reports for time windows of equal length the open (OPEN), minimum (MIN), maximum (MAX) and close (CLOSE) values ...
Meilijson, Isaac
core
Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones
Advanced Engineering Materials, EarlyView.A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell +3 more
wiley +1 more source
Revstat Statistical Journal, 2017 Suppose independent random samples are taken from k (≥ 2) exponential populations with a common and unknown location parameter “µ” and possibly different unknown scale parameters σ1,σ2,...,σk respectively.
Manas Ranjan Tripathy , Somesh Kumar
doaj +1 more source
Estimation of genetic parameters for test-day milk yield in Khuzestan buffalo [PDF]
Pesquisa Agropecuária Brasileira, 2016 : The objective of this work was to estimate covariance functions for additive genetic and permanent environmental effects, as well as to obtain genetic parameters for buffalo test-day milk yield using random regression models on Legendre polynomials ...
Mostafa Madad +2 more
doaj +1 more source
Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere
Advanced Engineering Materials, EarlyView.In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May +9 more
wiley +1 more source
Partial Replication Strategies for Definitive Screening Designs with Second-Order Models
MathematicsReplicating runs in designed experiments is essential for unbiased error variance estimation, particularly when the fitted model may not account for all active effects.
Marwan H. Alhelali, Basim S. O. Alsaedi
doaj +1 more source
BioTechniques, 1998 Taguchi methods, which are widely applied in industrial process design, were used to optimize DNA amplification fingerprinting (DAF). Quadratic loss functions that penalize deviations from prediction values and L9 (34) and L18 (38) orthogonal arrays ...
Gustavo Caetano-Anollés
doaj +1 more source
Small-area estimation based on natural exponential family quadratic variance function models and survey weights [PDF]
Biometrika, 2004 SUMMARY We propose pseudo empirical best linear unbiased estimators of small-area means based on natural exponential family quadratic variance function models when the basic data consist of survey-weighted estimators of these means, area-specific covariates and certain summary measures involving the weights.
openaire +1 more source
Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam
Advanced Engineering Materials, EarlyView.Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley +1 more source
Effect of Irrigation Water and Potassium Fertilizer on The Forage yield of Sorghum With The Aim to Determine The Yield Function - Water – Fertilizer (Pegah Variety) [PDF]
علوم و مهندسی آبیاری, 1970 This study was conducted to evaluate the effects of different levels of irrigation water and potassium fertilizer on the yield and its components of sorghum forage.
seyed hassan Mousavi Fazl +2 more
doaj +1 more source