A comparison of two statistical methods for analysis of day of the week effect on births from 2005-2007 in Harris County of Texas

The pattern of the births during the week has been reported by many studies. The births occurred in weekends are found consistently less then births occurred in weekdays. This study employed two statistical methods, two-way ANOVA and two-way Friedman's test to analyse the daily variations in amount of births of 222,735 births from 2005-2007 in Harris County, Texas. The two methods were compared on their assumptions, procedures and results. Both of the tests showed a significant result which indicated that the births through the week are not uniformly distributed. The result of multiple comparison demonstrated the births occurring on weekends were significantly different than the births occurring on weekdays with least amount on Sundays.^

Structuring research methods and data with the research object model: genomics workflows as a case study

Background: One of the main challenges for biomedical research lies in the computer-assisted integrative study of large and increasingly complex combinations of data in order to understand molecular mechanisms. The preservation of the materials and methods of such computational experiments with clear annotations is essential for understanding an experiment, and this is increasingly recognized in the bioinformatics community. Our assumption is that offering means of digital, structured aggregation and annotation of the objects of an experiment will provide necessary meta-data for a scientist to understand and recreate the results of an experiment. To support this we explored a model for the semantic description of a workflow-centric Research Object (RO), where an RO is defined as a resource that aggregates other resources, e.g., datasets, software, spreadsheets, text, etc. We applied this model to a case study where we analysed human metabolite variation by workflows. Results: We present the application of the workflow-centric RO model for our bioinformatics case study. Three workflows were produced following recently defined Best Practices for workflow design. By modelling the experiment as an RO, we were able to automatically query the experiment and answer questions such as “which particular data was input to a particular workflow to test a particular hypothesis?”, and “which particular conclusions were drawn from a particular workflow?”. Conclusions: Applying a workflow-centric RO model to aggregate and annotate the resources used in a bioinformatics experiment, allowed us to retrieve the conclusions of the experiment in the context of the driving hypothesis, the executed workflows and their input data. The RO model is an extendable reference model that can be used by other systems as well.

Datasets and results of the research [Discontinuity spacing analysis in rock masses using 3D point clouds]

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Health survey research methods : third biennial conference.

Mode of access: Internet.

Computer methods for analysis and synthesis of visual texture,

"C00-2118-0048."

Colorimetric methods of analysis, including some turbidimetric and nephelometric methods,

First ed. published in 1921 under title: Colorimetric analysis.

Colorimetric methods of analysis; including some turbidimetric and nephelometric methods,

First ed. published in 1921 under title: Colorimetric analysis.

Interdisciplinary team research: methods and problems.

Includes bibliography.

Official methods of analysis of the Association of Official Analytical Chemists.

Supplemented by changes adopted at the annual meetings.

Methods of analysis for petrochemicals.

Mode of access: Internet.

Methods of analysis adopted by the Association of official agricultural chemists, November 11, 12, and 14, 1898.

Mode of access: Internet.