Results 41 to 50 of about 21,469,720 (287)

Functional Factorial K-means Analysis [PDF]

open access: yes, 2014
A new procedure for simultaneously finding the optimal cluster structure of multivariate functional objects and finding the subspace to represent the cluster structure is presented.
Terada, Yoshikazu, Yamamoto, Michio
core   +2 more sources

Physical recreation in the structure of students' active recreation

open access: yesPhysical Culture, Recreation and Rehabilitation, 2022
Background and Study Aim.  The aim of the study is to generalize approaches to the concepts of physical recreation and recreational activities; reveal the directions and factors that contribute to the implementation of physical recreation; show the main ...
Viachesla Zaytzev   +2 more
doaj   +1 more source

Determination of serum proteins by means of the biuret reaction.

open access: yesJournal of Biological Chemistry, 1949
In the course of an investigation of the biochemical changes following experimental liver injury we felt the need of a simple, rapid, and accurate method for determining the protein fractions in small amounts of serum. Among the simpler procedures known,
A. Gornall, C. Bardawill, M. M. David
semanticscholar   +1 more source

Development and Field Testing of an Acoustic Sensor Unit for Smart Crossroads as Part of V2X Infrastructure

open access: yesSmart Cities
Improving city crossroads safety is a critical problem for modern smart transportation systems (STS). This article presents the results of developing, upgrading, and comprehensively experimentally testing an acoustic monitoring system prototype designed ...
Yury Furletov   +5 more
doaj   +1 more source

Optimal caliper widths for propensity-score matching when estimating differences in means and differences in proportions in observational studies

open access: yesPharmaceutical statistics, 2010
In a study comparing the effects of two treatments, the propensity score is the probability of assignment to one treatment conditional on a subject's measured baseline covariates.
Peter C. Austin
semanticscholar   +1 more source

Strategy is Structure. A Systems Theory-Based Definition of Strategy

open access: yesJournal of Organizational Sociology, 2023
Hardly any other management concept sounds as hackneyed as strategy, and at the same time hardly any other concept in organizational science is as vaguely defined. As a means of escaping the conceptual tangle, this article suggests a systems theory-based
Kühl Stefan
doaj   +1 more source

Does macronutrient consumption affect aerobic capacity? [PDF]

open access: yes, 2019
Background: Fitness in the United States is declining as the prevalence of obesity rises. It is known generally that exercise and diet both play a part in becoming fit, therefore veering away from being obese and/or overweight.
Bush-Means, Jordan
core   +2 more sources

MODERN DESIGN TOOLS FROM THE PERSPECTIVE OF GRAPHIC DESIGN DEVELOPMENT

open access: yesEconomics & Education, 2023
A scheme for considering design as a complex system with appropriate linguistics and a significant replenishment of the design system with new categories useful for further theoretical research and practical use is developed.
Almnshdawy Hussain Abdualee
doaj   +1 more source

Factor Analysis: a means for theory and instrument development in support of construct validity

open access: yesInternational Journal of Medical Education, 2020
Factor analysis (FA) allows us to simplify a set of complex variables or items using statistical procedures to explore the underlying dimensions that explain the relationships between the multiple variables/items.
M. Tavakol, Angela P. Wetzel
semanticscholar   +1 more source

Possibilities of Detecting Diesel Leaking Into Engine Oil with Fuel Sniffer

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2019
The paper presents the possibilities of detecting diesel fuel without rapeseed methyl ester (RME) in the concentration range of 0–9.54 wt% leaking into engine oil of SAE 15W – 40 viscosity specifications using Spectro FDM Q600 – Fuel Sniffer. The results
Marie Sejkorová, Petr Jilek
doaj   +1 more source

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