Results 41 to 50 of about 424,805 (289)

PetroPlot: A plotting and data management tool set for Microsoft Excel [PDF]

open access: yes, 2003
PetroPlot is a 4000-line software code written in Visual Basic for the spreadsheet program Excel that automates plotting and data management tasks for large amount of data.
Asimow, Paul D.   +2 more
core   +2 more sources

Comparative Analysis Four Different Ways of Calculating Yield Index SSSpk Based on Information of Control Chart, and Six Sigma, to Measuring the Process Performance in Industries: Case Study in Aden’s Oil Refinery, Yemen

open access: yesIEEE Access, 2021
Process capability index PCIs have long been used to assess process efficiency in the manufacturing. While PCIs assess the process stability and efficiency, real measurements of product quality depended on estimate the standard deviation for a short-term
Mohammed Mohammed Ahmed Almazah   +3 more
doaj   +1 more source

The x-bar control chart under non-normality

open access: yesQuality and Reliability Engineering International, 2010
This paper studies design schemes for the control chart under non-normality. Different estimators of the standard deviation are considered and the effect of the estimator on the performance of the control chart under non-normality is investigated. Two situations are distinguished. In the first situation, the effect of non-normality on the control chart
Schoonhoven, M., Does, R.J.M.M.
openaire   +2 more sources

SPOT: Open Source framework for scientific data repository and interactive visualization [PDF]

open access: yes, 2018
SPOT is an open source and free visual data analytics tool for multi-dimensional data-sets. Its web-based interface allows a quick analysis of complex data interactively. The operations on data such as aggregation and filtering are implemented.
Attema, Jisk   +5 more
core   +2 more sources

Effects of diagenetic processes on the velocity evolution in carbonate reservoirs

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources, 2023
Carbonate rocks are geologically complex due to the diagenetic processes they experience before and after lithification. Diagenetic processes alter their matrix and pore structure leading to the modification in their sonic velocities.
Mohammad Hossein Khosravi   +2 more
doaj   +1 more source

Understanding Visualization: A formal approach using category theory and semiotics [PDF]

open access: yes, 2012
This article combines the vocabulary of semiotics and category theory to provide a formal analysis of visualization. It shows how familiar processes of visualization fit the semiotic frameworks of both Saussure and Peirce, and extends these structures ...
Faith, Joe   +2 more
core   +2 more sources

Defining the space in a general spacetime

open access: yes, 2015
A global vector field $v$ on a "spacetime" differentiable manifold $\mathrm{V}$, of dimension $N+1$, defines a congruence of world lines: the maximal integral curves of $v$, or orbits.
Arminjon, Mayeul
core   +2 more sources

Bayesian Model Selection for Beta Autoregressive Processes [PDF]

open access: yes, 2010
We deal with Bayesian inference for Beta autoregressive processes. We restrict our attention to the class of conditionally linear processes. These processes are particularly suitable for forecasting purposes, but are difficult to estimate due to the ...
Casarin, R., Leisen, F., Valle, L. Dalla
core   +2 more sources

An application of control charts in manufacturing industry [PDF]

open access: yes, 2012
The range control chart and the X bar control chart are the well known and the most popular tools for detecting out- of-control signals in the Statistical Quality Control (SQC). The control charts has shown his worth in the manufacturing industry.
Muhammad, Faqir, Riaz, Muhammad
core  

3D printing for bio-synthetic biliary stents [PDF]

open access: yes, 2019
Three-dimensional (3D) printing is an additive manufacturing method that holds great potential in a variety of future patient-specific medical technologies.
Alexander, Jonathan Steven   +10 more
core   +2 more sources

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