Results 11 to 20 of about 701,348 (263)

Determination of Merremia cissoids leaf area using the linear measures of the leaflets - doi: 10.4025/actasciagron.v33i3.6379

open access: yesActa Scientiarum. Agronomy, 2011
Knowledge of the weed leaf area may give support to study the interference relationships between weeds and crops. The objective of this research was to determine a mathematical equation for M.
Leonardo Bianco Carvalho   +3 more
doaj   +1 more source

Clarifying the Implicit Assumptions of Two-Wave Mediation Models via the Latent Change Score Specification: An Evaluation of Model Fit Indices

open access: yesFrontiers in Psychology, 2021
Statistical mediation analysis is used to investigate mechanisms through which a randomized intervention causally affects an outcome variable. Mediation analysis is often carried out in a pretest-posttest control group design because it is a common ...
Matthew J. Valente   +2 more
doaj   +1 more source

Evaluating surface roughness of curved surface with circular profile based on arithmetic circular arc fitting

open access: yesAIP Advances, 2023
A procedure based on Kåsa fit for evaluating the surface roughness of a curved surface with a circular arc profile was suggested in this paper. To investigate the effectiveness of the method, some curved surface profiles with preset surface roughness ...
Jian Li   +4 more
doaj   +1 more source

Fitting the linear preferential attachment model

open access: yesElectronic Journal of Statistics, 2017
Preferential attachment is an appealing mechanism for modeling power-law behavior of the degree distributions in directed social networks. In this paper, we consider methods for fitting a 5-parameter linear preferential model to network data under two data scenarios.
Wan, Phyllis   +3 more
openaire   +5 more sources

Linear Dimensional Change and Accu-racy of Fit of Positive Pressure Thermo–Formed Prosthodontic Materials [PDF]

open access: yesAl-Rafidain Dental Journal, 2012
To determine the dimensional accuracy of thermoformed dental base plates. Materials and methods: Six different types of thermoformed materials were used.
Zeina M Ahmad   +2 more
doaj   +1 more source

The dual King relation

open access: yesPhysics Letters B, 2023
We introduce a new linear relation in the isotope shifts of atomic spectroscopy. While the famous King relation is the linear relation among the different transitions, the new one is the linear relation among the different isotope pairs.
Yasuhiro Yamamoto
doaj   +1 more source

High-dimensional shape fitting in linear time [PDF]

open access: yesProceedings of the nineteenth conference on Computational geometry - SCG '03, 2003
Let \(P\) be a set of \(n\) points in \(\Re^d\). The radius of a \(k\)-dimensional flat \({\mathcal F}\) with respect to \(P\), which we denote by \({\mathcal RD}({\mathcal F},P)\), is defined to be \(\max_{p \in P} \text{dist}({\mathcal F},p)\), where \(\text{dist}({\mathcal F},p)\) denotes the Euclidean distance between \(p\) and its projection onto \
Sariel Har-Peled, Kasturi R. Varadarajan
openaire   +1 more source

Growth Dynamic of Sugarcane Cultivars C97-366 and C99-374 for Forage Production

open access: yesAgrisost, 2021
Context: Plant growth analysis is a valuable tool to detect biomass formation and accumulation. The determination of growth indexes enables plants to adapt to different edaphoclimatic conditions, and to select the most promising responses among them ...
Yoslen Fernández Gálvez   +5 more
doaj   +3 more sources

Stochastic Design Criteria in Linear Models

open access: yesAustrian Journal of Statistics, 2016
Within the framework of classical linear regression model stochastic optimal design criteria are considered. As examples a line fit model and a k-way linear fit model are taken. If the optimal design does not exist, an approach consisting in choosing the
Alexander Zaigraev
doaj   +1 more source

Equilibrium isotherm studies for the sorption of Nickel ions onto coal fly ash

open access: yesEnvironment Conservation Journal, 2014
The objective of the present study was to study equilibrium isotherm for the sorption of Nickel ions onto coal fly ash. In this study, BET adsorption isotherm was found to be best fitted among  Langmuir, Freundlich, BET, Temkin and Harkins Jura ...
Ajay K. Agarwal   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy