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ABSTRACT

The prudent teaching of the forensic fire engineering analysis of complex building fires must include the subject of computer fire modeling, particularly the use of the Fire Dynamics Simulator (FDS), developed by the National Institute of Standards and Technology (NIST).  However, the problems associated with FDS require that large buildings be divided into rooms or zones, with each assigned to an individual computational mesh.  These mutli-mesh models often produce relatively long execution times of days or weeks and typically require parallel processing computing clusters, which require technically challenging set up and maintenance.  These performance gains can only be accomplished using high performance parallel processing computer clusters designed specifically to use operating systems and hardware that exploit the parallel functions of the FDS code.  This paper presents best practices from the latest research in constructing small, medium, and large-scale high performance parallel processing computing clusters for use in academic environments to support NIST’s FDS fire model.

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Hypothesis vs. Theory

http://www.diffen.com/difference/Hypothesis_vs_Theory September 15, 2017

A hypothesis is either a suggested explanation for an observable phenomenon, or a reasoned prediction of a possible causal correlation among multiple phenomena. In science, a theory is a tested, well-substantiated, unifying explanation for a set of verified, proven factors. A theory is always backed by evidence; a hypothesis is only a suggested possible outcome, and is testable and falsifiable.

Purpose: To present an uncertain possibility that can be explored further through experiments and observations. To explain why a large set of observations are consistently made.

From Out of the Abyss...

This week’s article from the past is titled Incendiary Fires Can Be Spotted and was written by Benjamin Horton, CPCU, who was President of the National Adjuster Traing School in Louisville, Kentucky..  It is taken from the Decembe 1968 Vol. XVI No.5 issue.

Incendiary Fires Can Be Spotted 

In the new issue of NFPA Journal®, President Jim Shannon said the Association will focus on the leading causes of home fires, including cooking. "We also need to continue to push hard for home fire sprinklers. That's still a large priority for NFPA, and we plan to work very aggressively in 2014 on our residential sprinkler initiative," he said.

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NFPA 921, Guide for Fire and Explosion Investigations plays a fundamental role in fire and explosion investigations. A new edition of NFPA 921 is scheduled to be published in 2014. For years, this document has played a critical role in the training, education and job performance of fire and explosion investigators. It also serves as one of the primary references used by the National Fire Academy to support its fire/arson-related training and education programs. It is imperative that investigators understand the scope, purpose and application of this document, especially since it will be used to judge the quality and thoroughness of their investigations.

NFPA 921, Guide for Fire and Explosion Investigations plays a fundamental role in fire and explosion investigations. A new edition of NFPA 921 is scheduled to be published in 2014. For years, this document has played a critical role in the training, education and job performance of fire and explosion investigators. It also serves as one of the primary references used by the National Fire Academy to support its fire/arson-related training and education programs. It is imperative that investigators understand the scope, purpose and application of this document, especially since it will be used to judge the quality and thoroughness of their investigations.

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SAN DIEGO - A Team 10 and Scripps News investigation found arson fires are not investigated properly in many American cities -- including San Diego -- due to a chaotic patchwork of reporting systems and standards.

Many deliberately set building fires are not reported to the federal government.

Nationally, just 5 percent of all residential building fires are intentionally set, according to the National Fire Incident Reporting System, which is part of the Department of Homeland Security.  Data collected by Scripps News suggests the national arson rate to be significantly higher.

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Legislative Update: June 10, 2009

The 2009 California Legislative session is in full swing with numerous pending bills up for consideration. As these bills move through the committee process, they may be amended or revised many times. In some cases, the final version of the bill may exclude some of the main points of the original proposal in order to secure passage.

At the recent CCAI Board of Directors Meeting in March 2009, the Board voted to support the following pieces of pending legislation:.

Assembly Bill #27

This bill would increase the amount of damage required for a person to be guilty of aggravated arson from 5,650,000 to 6,500,000 and would extend the repeal date for the provisions relating to property damage until January 1, 2014.

Assembly Bill #1385

This bill would expand the definition of Peace Officer to include peace officers defined in PC 830.37 for the purposes of using an emergency vehicle that will allow the use of a steady or flashing blue warning light visible from the front, sides, or rear of the vehicle.

Assembly Bill #388

This bill would require, subject to exceptions, that vendors of firefighting uniforms verify that a person purchasing a uniform identifying a firefighting agency is an employee of the agency identified on the uniform.

Assembly Bill #937

This bill would impose registration requirements parallel to those applicable in arson cases on violators of certain laws regulating the possession and use of destructive devices.

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