Results 11 to 20 of about 21,469,720 (287)

Application of FTIR-ATR Spectrometry in Conjunction with Multivariate Regression Methods for Viscosity Prediction of Worn-Out Motor Oils

open access: yesApplied Sciences, 2021
Viscosity is considered to be a key factor in the quality of lubrication by oil and engine manufacturers and is therefore one of the most monitored parameters of lubricants. FTIR (Fourier-transform infrared) spectrometry in combination with Partial Least
Marie Sejkorová   +3 more
doaj   +1 more source

Consumer Perceptions of Price, Quality, and Value: A Means-End Model and Synthesis of Evidence:

open access: yes, 1988
Evidence from past research and insights from an exploratory investigation are combined in a conceptual model that defines and relates price, perceived quality, and perceived value.
V. Zeithaml
semanticscholar   +2 more sources

Comparison of selected parameters for evaluation of rail surface damage intensity

open access: yesActa Polytechnica CTU Proceedings, 2022
This paper deals with the issue of evaluation of a rail surface damage (RSD) intensity. Some ways of calculating parameters that represent the RSD are described. In this context, a multi-body model of a railway vehicle was created and several simulations
Jiří Šlapák, Tomáš Michálek
doaj   +1 more source

Notes on the Reproductive Biology of the Alabama Red Hills Salamander (Phaeognathus hubrichti ) [PDF]

open access: yes, 2003
Living Amphibia exhibit two major life history modes, possession of an aquatic larval stage or direct development, with the latter assumed to be the derived evolutionary condition (Duellman and Trueb 1986, Wake 1989).
Means, Bruce
core   +2 more sources

Vehicle/track interaction under the conditions of high speed railway operation

open access: yesActa Polytechnica CTU Proceedings, 2021
This paper deals with the issue of dynamic effects of a high-speed railway vehicle on the track. Some aspects of vehicle/track interaction at higher speeds are described.
Jiří Šlapák, Tomáš Michálek
doaj   +1 more source

Desmognathus apalachicolae [PDF]

open access: yes, 1993
Number of Pages: 2Integrative BiologyGeological ...
Means, D. Bruce
core   +1 more source

Apache Mahout’s k-Means vs. fuzzy k-Means performance evaluation [PDF]

open access: yes, 2016
(c) 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or ...
Barolli, Leonard   +3 more
core   +1 more source

Peace as the purpose of the military [PDF]

open access: yesВојно дело, 2021
The attitude of political system, and in a broader sense of political community, towards the military is largely defined by the understanding of the role and purpose that the military has in a society. The lack of the understanding of the true purpose of
Stanar Dragan
doaj   +1 more source

BIOGEOGRAPHY AND PATTERN VARIATION OF KINGSNAKES, LAMPROPELTIS GETULA, IN THE APALACHICOLA REGION OF FLORIDA [PDF]

open access: yes, 2001
Morphology of kingsnakes, Lampropeltis getula, is described and analyzed in the Apalachicola region of the Florida panhandle. Populations inhabiting the eastern Apalachicola Lowlands, a distinct biotic province, are different from the surrounding ...
Krysko, Kenneth L., Means, D. Bruce
core   +2 more sources

Least-Squares Means: The R Package lsmeans

open access: yes, 2016
Least-squares means are predictions from a linear model, or averages thereof. They are useful in the analysis of experimental data for summarizing the effects of factors, and for testing linear contrasts among predictions. The lsmeans package (Lenth 2016)
R. Lenth
semanticscholar   +1 more source

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