نتایج جستجو برای: r software

تعداد نتایج: 862141  

2014
Jean-Pierre Gattuso

Orr et al. (2014) identified bugs in the R package seacarb, which had very little effect on computed results when used with the best practices constants (Dickson et al., 2007), and highlighted very long processing time on big data files. Version 3.0 has just been released and can be downloaded from CRAN. The package has been modified to fix the minor bugs and optimize the code, leading to a dra...

Journal: :PeerJ PrePrints 2017
Jennifer Bryan

Data analysis, statistical research, and teaching statistics have at least one thing in common: these activities all produce many files! There are data files, source code, figures, tables, prepared reports, and much more. Most of these files evolve over the course of a project and often need to be shared with others, for reading or edits, as a project unfolds. Without explicit and structured ma...

1998
Bruce C. Hartman Thomas Lee Rodgers

Symbolic mathematical software has become inexpensive enough that it is almost practical to require each first-year calculus student to purchase it. But having a program do math for you might not be learning, and does not teach you how to apply it. This paper examines research issues related to learning calculus including cognitive processes, the role of proficiency and a proposed causal model....

Journal: :European Journal of Engineering and Formal Sciences 2019

2017
Taras Kobylnyk

Data processing is not possible without a computer with the appropriate software. Before the user there is a problem of choosing software for research. Therefore the aim was to analyze software for statistical research. To achieve the goal the scientific and methodological sources were analyzed, comparison, generalization were made to determine the state of a problem and perspective directions ...

Journal: :vaccine research 0
sm hosseini pasteur institute of iran sb momen pasteur institute of iran d doroud pasteur institute of iran sn hoseini pasteur institute of iran k maboudi pasteur institute of iran sh hadadian pasteur institute of iran

introduction: pharmaceutical companies as well as food and cosmetics manufacturers are legally required to provide a shelf-life label on their products packaging as part of their stability study report. there are different recommended software like r software package and sas which can perform as shelf-life estimating tools for analyzing the data achieved by the stability testing of drugs and va...

2001
Minh Ha-Duong

Better software engineering such as archiving releases with version control, writing portable code, publishing documentation and results closely tied to the code improves integrated assessment models’ transparency and control. A case study of four climate change policy analysis models found that source code and data was generally available, but for larger models licenses were more restrictive w...

2016
Michael N. Fienen Mark Bakker

In the past decade, difficulties encountered in reproducing the results of a cancer study at Duke University resulted in a scandal and an investigation which concluded that tools used for data management, analysis, and modeling were inappropriate for the documentation of the study, let alone the reproduction of the results. New protocols were developed which require that data analysis and model...

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