Results 221 to 230 of about 10,156,002 (281)

Upper Cervical Cord Area as a Biomarker of Conversion to Secondary Progressive Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This study assessed whether upper cervical cord area (UCCA) measured on routine brain MRI can serve as a biomarker of conversion to SPMS. Methods This is a single‐center retrospective cohort study of RRMS patients with cross‐sectional and longitudinal analyses of clinical and MRI data. Future SPMS converters were matched by age, sex,
Nabil K. El Ayoubi   +8 more
wiley   +1 more source

Experimental-AI approach (hybrid) for evaluating the strength characteristics of eco-efficient concrete incorporating coal bottom ash. [PDF]

open access: yesSci Rep
Kumar CA   +8 more
europepmc   +1 more source
Some of the next articles are maybe not open access.

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The Split-Plot Design

Journal of Quality Technology, 1973
The nature and uses of the split-plot design are discussed. An initial section reviews models and least squares to establish a point of view. The major section presents the development of a simple split-plot design by a process of "evolution,"..
exaly   +2 more sources

Fraction of Design Space Plots for Split-plot Designs

Quality and Reliability Engineering International, 2006
AbstractIn industrial experiments, restrictions on the execution of the experimental runs or the existence of one or more hard‐to‐change factors often leads to split‐plot experiments, where there are two types of experimental units and two independent randomizations.
Christine Anderson-Cook
exaly   +3 more sources

Split-Plot Design: A Robust Analysis

open access: yes, 1996
This paper is devoted to the examination of the robustness of standard split-plot analysis for a two factors design with complete blocks under normality assumptions. For instance, in ceramics firing, the main factors are the oven temperature A and the clay mixture B.
R. Guseo, GUSEO, RENATO
openaire   +3 more sources

Robust split‐plot designs

Quality and Reliability Engineering International, 2007
AbstractIn many experimental situations, practitioners are confronted with costly, time consuming, or hard‐to‐change (HTC) factors. These practical or economic restrictions on randomization can be accommodated with a split‐plot design structure that minimizes the manipulation of the HTC factors.
Peter A. Parker   +3 more
openaire   +1 more source

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