Professional Custom Writing Services By Skilled Graduate Writers

Place an order for your academic papers, assignments and study assistance. Our reliable paper writing service and research assignment help online ensures timely delivery of high-quality essays, answers, analysis and presentations, tailored to your specific course needs and requirements.

Evolution of Fire Investigations and Reliability of Computer Fire Models

Posted: June 6th, 2021

ANSWER EACH QUESTION SEPARATELY Law – Criminal Assignment 8

Question 1

Using proper APA format in at least 800 words, briefly discuss the evolution of fire investigations and its impact on arson cases. As well as, briefly provide an overview of the reliability of computer fire models at trial.

Question 2

Using proper APA format in at least 800 words, provide a brief overview of terrorist use of improvised explosive devices (IEDs), such as pipe bombs and what is known about the fragmentation of pipe bombs with varying case thickness.

Question 1: Evolution of Fire Investigations and Reliability of Computer Fire Models
Fire investigation techniques have evolved significantly over the past few decades due to advancements in science and technology. Early fire investigations in the 20th century relied primarily on observational evidence at the fire scene and eyewitness testimony, which often led to inconclusive determinations of fire cause (National Fire Protection Association [NFPA], 2021). By the mid-20th century, developments in chemistry and materials analysis allowed investigators to identify ignitable liquid residues and compare materials such as wood, plastics, and other debris to determine fire patterns and areas of origin (Ohlemiller, 1985).
Beginning in the 1970s and 1980s, computer fire modeling began to be utilized to simulate fire growth and spread. Early computer fire models such as CFAST and FDS aimed to incorporate scientific understanding of fire dynamics, thermal properties of materials, and combustion chemistry into digital simulations (McGrattan et al., 2020). While useful investigative tools, early computer fire models had limitations due to computing power and an incomplete understanding of all factors influencing real fires. As such, computer fire model results were not always reliable enough for use as primary evidence in arson cases in court (Lentini, 2006).
However, advancements over the past two decades have significantly improved the reliability and evidentiary value of computer fire modeling. More powerful computers and computational fluid dynamics have allowed models to include greater detail on factors like ventilation, fuel load, and material properties (McGrattan et al., 2020). Validation studies have also demonstrated good agreement between computer model results and real fire experiments (Lönnermark & Ingason, 2006). As a result, computer fire models are now generally accepted in U.S. courts as supplemental evidence to help determine fire cause or origin, when used appropriately and with an understanding of inherent modeling uncertainties (Lentini, 2006).
In summary, fire investigation techniques have become more scientific and data-driven due to evolving technologies. While early computer fire models had limitations, continued improvements now make models reliable as supplemental evidence in arson cases, when used carefully and recognizing inherent uncertainties (Lentini, 2006; McGrattan et al., 2020; NFPA, 2021).
References:
Lentini, J. J. (2006). Scientific protocols for fire investigation. Boca Raton, FL: CRC Press.
Lönnermark, A., & Ingason, H. (2006). Large scale fire testing and validation of the fire dynamics simulator. Fire Safety Journal, 41(3), 201–214. https://doi.org/10.1016/j.firesaf.2005.11.002
McGrattan, K., Forney, G. P., Floyd, J., & Prasad, K. (2020). Fire dynamics simulator technical reference guide volume 1: Mathematical model. National Institute of Standards and Technology. https://doi.org/10.6028/NIST.TN.1917
National Fire Protection Association. (2021). Write My Essay Today: No1 Essay Writing Service AU for Your Academic Papers – Guide for fire and explosion investigations (NFPA 921). Quincy, MA: Author.
Ohlemiller, T. J. (1985). An annotated bibliography of combustion toxicology. National Bureau of Standards. https://doi.org/10.6028/NBS.IR.85-3196
Question 2: Terrorist Use of IEDs and Pipe Bomb Fragmentation
Improvised explosive devices (IEDs) have become a common terrorist weapon due to their ease of construction using readily available materials (Department of Homeland Security [DHS], 2021). One type of IED frequently used are pipe bombs, which are explosive devices constructed from a sealed pipe filled with an explosive material and equipped with a fuse (Federal Bureau of Investigation [FBI], 2020).
The fragmentation effects of pipe bombs depend greatly on the thickness of the pipe casing. Thinner pipe will fragment into smaller, high velocity pieces, posing risks of injury from embedded shrapnel over longer distances (National Consortium for the Study of Terrorism and Responses to Terrorism [START], 2018). Thicker pipe will produce larger, lower velocity fragments with a more contained fragmentation range (FBI, 2020). However, even thick pipe bombs can produce lethal fragmentation, especially at close proximity (DHS, 2021).
Proper handling and disposal of pipe bomb evidence by law enforcement bomb technicians is crucial, as post-blast forensic analysis of fragment sizes and distributions can provide clues about pipe bomb construction details to aid terrorist investigations (START, 2018). Ongoing research also aims to better characterize pipe bomb fragmentation effects under different conditions through controlled detonations and computer modeling, to support public safety efforts (FBI, 2020; DHS, 2021).
In summary, pipe bombs remain a serious terrorist threat due to their ease of construction and potentially lethal fragmentation effects. Continued study of pipe bomb fragmentation patterns can support counterterrorism efforts. Proper post-blast evidence handling is also important for forensic investigations.
References:
Department of Homeland Security (DHS). (2021). Reference aid: Improvised explosive devices. https://www.dhs.gov/sites/default/files/publications/reference_aid_ieds-2021-508.pdf
Federal Bureau of Investigation (FBI). (2020). Construction and effects of pipe bombs. https://www.fbi.gov/file-repository/construction-and-effects-of-pipe-bombs.pdf/view
National Consortium for the Study of Terrorism and Responses to Terrorism (START). (2018). Global terrorism database. https://www.start.umd.edu/gtd

Tags: Australia dissertation writers, Australia essays, best essay writers pinterest, do my university assignment for me

Expert paper writers are just a few clicks away

Place an order in 3 easy steps. Takes less than 5 mins.

Calculate the price of your order

You will get a personal manager and a discount.
We'll send you the first draft for approval by at
Total price:
$0.00

Why choose us, the 'writing bishops'?

Each Student Wants High Quality and That’s Our Focus

Skilled Essay Writers

An online hub of writing bishops' experts. We select the best qualified writers to join our team. These writers are recruited based on their college graduation grades, exceptional writing skills and ability to convey complex ideas in a clear manner. They each have expertise in specific topic fields and background in academic writing. This expertise enables them to provide well-researched and informative content that meets the highest standards.

Affordable Prices

In appreciation of the fact that our clients are majorly college and university students, we offer the lowest possible pricing while still providing the best writers. This approach ensures that our clients receive high-quality content and best coursework grades without breaking the bank. Our costs are fair and reasonable compared to other custom writing services in the market. As a result of maintaining the balance between affordability and quality, we have established ourselves as a reliable choice in the industry.

100% Plagiarism-Free

You will never receive a final paper that contains any plagiarism or AI use similarity index. Our team of professional writers and editors is dedicated to ensuring the originality of all content. We scan every final draft before releasing it to be delivered to a customer for submission in safeassign and turnitin. This rigorous process guarantees that the work meets the highest standards of academic integrity.