Tesi sul tema "Fire"
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1
Chau, Kam-chiu Lawrence. "The ecology of fire in Hong Kong /". Hong Kong : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18933798.
Testo completo
2
Kozlowski, Donald F. "Pre-fire functional condition and post-fire channel changes in northern Nevada streams 1999-2001 fires /". abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1447637.
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3
Blackburn, Pennie. "Stress and well-being within Fife Fire Service". Thesis, University of Edinburgh, 1998. http://hdl.handle.net/1842/26336.
Testo completoAbstract (sommario):
Emergency Services Personnel are exposed to critical incidents at a far higher rate than the general population. Therefore, there may be a greater risk to people in critical occupations of developing post traumatic stress symptomotology. The aim of the study was to consider the level of stress and well-being reported in a sample of Fire Fighters. A questionnaire survey of the Fife Fire And Rescue Service was carried out which explored the relationship between demographic variables, the severity of exposure to an identified incident, on-scene and post event coping strategies and outcome measures of general health, well-being, and post traumatic stress disorder. Interviews of a small sub-sample, were also conducted which provided more qualitative data concerned with aspects of work related stress. The results are discussed in the context of the current literatures. Implications of the prevention of stress in Emergency Service Personnel are also considered.
4
Steiner, Nicholas R. "Lessons from the investigation and analysis of real fires". Thesis, London South Bank University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265355.
Testo completo
5
Beller, Douglas K. "Alternate Computer Models of Fire Convection Phenomena for the Harvard Computer Fire Code". Digital WPI, 2000. https://digitalcommons.wpi.edu/etd-theses/892.
Testo completoAbstract (sommario):
"Alternate models for extended ceiling convection heat transfer and ceiling vent mass flow for use in the Harvard Computer fire Code are developed. These models differ from current subroutines in that they explicitly consider the ceiling jet resulting from the fire plume of a burning object. The Harvard Computer fire Code (CFC) was used to compare the alternate models against the models currently used in CFC at Worcester Polytechnic Institute and with other available data. The results indicate that convection heat transfer to the ceiling of the enclosure containing the fire may have been previously underestimated at times early in the fire. Also, the results of the ceiling vent model provide new insight into ceiling vent phenomena and how ceiling vents can be modeled given sufficient experimental data. this effort serves as a qualitative verification of the models as implemented; complete quantitative verification requires further experimentation. Recommendations are also included so that these alternate models may be enhanced further. "
6
Lee, Ching Hao. "Fire retardant behavior of Kenaf fibre reinforced Floreon composite". Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/19908/.
Testo completoAbstract (sommario):
According to the report, more than 41% of fatalities in flight were to find to be caused by fire. In recent years, composites used in aircrafts are carbon fibre/ glass fibre reinforced epoxy, due to light weights and high strength properties. However, these composites are known as highly flammable. Serious fire incident will be created in a short time after a spark of fire. Furthermore, ingredients for fibre and epoxies are, toxic and resulting in the release of toxic gases during fire, and cutting off fresh air to survivors and hindering their escape. In the meantime, biopolymers have attracted considerable attention due to their environmentally friendly and sustainable nature, Kenaf Fibre (KF) is one of the most famous natural fibre used as a reinforcement in Polymer Matrix Composites (PMC). Kenaf is also known as Hibiscus Cannabimus L., and is an herbaceous annual plant that is grown in a wide range of weather conditions, growing more than 3 meters within 3 months. However, the inherent drawbacks associated with Floreon (FLO) based composites include brittleness, lower strength and high moisture sensitivity, which in turn limit their application in the aircraft industry. In order to overcome such drawbacks, two modification techniques were employed in this study: (1) incorporated kenaf fibre into polypropylene polymer with magnesium hydroxide flame retardant and (2) reinforces kenaf fibre and magnesium hydroxide by different combination of volume. Consequently, KF reinforced FLO or polypropylene (PP) composites with magnesium hydroxide (MH) flame retardant specimens were successfully developed using extrusion followed by hot pressing. The increment of KF contents in PP composites had shown higher tensile modulus and decomposed mass loss at onset temperature, but lower values in tensile strength, elongation, flexural strength and onset temperature. In the meantime, 25 wt% KF contented PP composite shown a slightly higher flexural strength, while the higher volume of MH filler in composites caused lower strength, tensile modulus, elongation, but with higher onset temperature and the 2nd peak temperature in thermogravimetric analysis (TGA) testing. Furthermore, increasing the KF contents in PP matrix has found lower mass residue. However, increasing of KF contents in MH contented composite had increased the mass residue at the end of the testing. On the other hand, the increment of the melt flow properties (MVR and MFR) was found for the KF or MH insertion, due to the hydrolytic degradation of the polylactic acid (PLA) in FLO. The deterioration of the entanglement density at high temperature, shear thinning and wall slip velocity were the possible causes for the higher melt flow properties. In the meantime, increasing the KF loadings caused the higher melt flow properties while the FLO composites with higher MH contents created stronger bonding for higher macromolecular chain flow resistance, hence, recorded lower melt flow properties. However, the complicated melt flow behavior of the KF reinforced FLO/MH biocomposites was found in this study. The high probability of KF-KF and KF-MH collisions was expected and there were more collisions for higher fibre and filler loading, causing lower melt flow properties. Besides that, insufficient resin for fibre wetting, hydrolytic degradation on the biopolymer and poor interfacial bonding were attributed to low strength profile. Yet, further addition of KF increased the tensile strength and flexural. Nevertheless, inserting KF and MH filler have shown positive outcome on flexural modulus. Insertion of KF and MH showed the deterioration of impact strength, while the addition of KF increased the impact strength. Meanwhile, FLO is a hydrophobic biopolymer which showed only a little of total water absorption. In this regard, for the first 24 hours, the water absorption rates were high for all bio-composites. Hence, it is worth mentioning that the high contents of KF in bio-composites shown higher saturation period and higher total amount of water absorption while MH caused shorter saturation period but lower total amount of water absorption. However, interface bonding incompatibility has increased the water absorption of KF/FLO/MH composites. Moreover, some synergistic effect was located in char formation, Tg reduction and a lower tan δ peak shown in the three-phase system (KF/FLO/MH). The MH filler was found to be more significant in enhancing mass residual. The Tg were show deterioration for all samples compared to pure FLO biopolymer. The melting temperature has found no meaningful change for either insertion of KF or MH or both. The values of co-coefficient, C recorded decreasing as increasing the fibre loading. This showing the fibres transfer the loading effectively. As conclusion, although 10KF5MH specimen does not have the best performance in mechanical properties, a higher flame retardancy shall provide KF reinforced FLO composite with MH filler for more applications in advanced sector especially, in hazardous environment.
7
Kuchinke, Diana. "Investigating bird responses to fire in the Heathy Dry Forests of Victoria, Australia". Thesis, Federation University Australia, 2018. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/167648.
Testo completoAbstract (sommario):
Globally, forest birds are under pressure, from agriculture and urban development fragmenting the landscape. Adding to these pressures, changes in the patterns of global climate drivers give rise to an increase in the frequency of extreme weather events. In Victoria, Australia, changing weather conditions are resulting in increases in the frequency and extent of bushfires. Furthermore, prescribed burning is applied to the landscape in attempts to not only ameliorate the impacts from bushfire, but as part of a ‘pyrodiversity begets biodiversity’ protocol. These pressures all impact birds by reducing resources for: food, nesting and protection from predators. This thesis investigated bird responses to fire in the Heathy Dry Forests of Victoria, against variables of time-since-fire and fire frequency. Bird responses were modelled in terms of: community, foraging guilds and individual species. As a community, birds showed a resilience to both time since fire and fire frequency. Responses by foraging guilds and individual species highlighted some different responses. The common species from each foraging guild showed responses that broadly represent their guild. This thesis highlighted that an effective tool in adaptive management is to predict the trends of our common forest birds, as surrogates for entire bird communities, not just for fire responses, but for a broader reflection on the health of the landscape. The modelling of one species, the Laughing Kookaburra, showed a response to both time since fire and fire frequency, with a reduced abundance in post-fire new-growth vegetation. As this species is noted as being in decline down the east coast of Australia, it is flagged in this thesis as a species of concern. Further, this thesis investigated alpha and beta responses by the forest birds to prescribed burns of different severities. Results suggest that forest birds show little response to small prescribed burns in the landscape, regardless of severity. This may be a result of Heathy Dry Forests’ rapid regeneration post-fire. However, one species that exhibits site fidelity, the White-throated Treecreeper, left areas impacted by high severity prescribed burns. The White-throated Treecreeper’s response flagged the importance of tree hollows being maintained in the landscape, essential for the species that require hollows for roosting and nesting.Doctor of Philosophy
8
Archibald, Robert D. "Fire and the persistence of tuart woodlands /". Access via publisher's site, 2006. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20071130.140115.
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9
Bistinas, Ioannis. "Global interactions between fire and vegetation, human activities and climate". Doctoral thesis, ISA-UL, 2016. http://hdl.handle.net/10400.5/12022.
Testo completoAbstract (sommario):
Doutoramento em Engenharia Florestal - Instituto Superior de Agronomia - ULVegetation fires are an important component of the earth’s system land processes and have a significant impact on the vegetation and CO2 dynamics. The global fire patterns are not thoroughly explored and the drivers of fire regimes in global scale are interconnected. However, several modelling assumptions are contradicted by exploring those relationships partially. At global scale, fire extent is fuel limited, with climatic variables showing both positive and negative influence on fuel moisture conditions, and humans showing a negative net effect. When isolating the influence of population density and assuming spatial nonstationarity, the human impact is very detailed and reflects the main land use activities with emphasis on cropland and rangeland management at continental scale. The footprint of fire into the Earth system can be measured in terms of radiative forcing from pre and post-fire albedo changes, with the forest biomes driving the extremes on annual basis. Additionally this thesis explores the patterns and the trends of contemporary fire activity. Contrary to previous studies, the results show non-monotonic patterns at grid cell level. The findings of this thesis give a better insight into the spatial variability and the controls of fire at global scale using satellite derived datasets with a focus to the anthropogenic land use activities
10
McMaster, Sarah. "Taking fire, making fire : settler colonial understandings of Aboriginal fire practices in Victoria, Australia". Thesis, Federation University Australia, 2019. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/185879.
Testo completoAbstract (sommario):
In the State of Victoria, Australia, fire has a political dimension that is as vigorous and enduring as its physical presence. This thesis argues that in Victoria, European explorers and settler colonists persistently treated and depicted Aboriginal fire skills and practices in ways that were politically advantageous to themselves, and disadvantageous to Aboriginal peoples. Drawing from nineteenth century diaries, letters, recollections, newspaper articles and official records, this work uses Foucauldian theories to analyse the discourses that shaped and made possible the newcomers’ understandings of Aboriginal fire practices. It argues that explorers and settler colonists sought to replace Aboriginal peoples as Victoria’s fire managers and to restrict the opportunities Aboriginal peoples had to determine burning regimes. They did this physically, by prohibiting, and limiting attempts by Aboriginal peoples to continue precolonial fire practices. They also did it discursively, creating knowledge which constituted the practices as antiquated and incompatible with colonial enterprises, and by forming their own identity as expert settler Victorians, legitimately at home on the land. This thesis stresses that relationships of power between Aboriginal and European peoples were multidimensional and argues that in maintaining a position of dominance, the newcomers variously appropriated, emulated, feared and revered Aboriginal fire practices. It further argues that these efforts to disturb Aboriginal peoples using fire were fuelled only partially by the settler colonial perceptions that Aboriginal-managed fires presented unacceptable physical risks to humans and their assets. Efforts to disturb existing practices were additionally prompted by the newcomers’ political need to effect their seizure of territory, by demonstrating that it was they, not Aboriginal peoples, who controlled fire in Victoria. Drawing from settler colonial theory about the enduring nature of colonising structures and discourse, this thesis suggests that caution is needed to ensure the state’s contemporary use of Aboriginal fire practices does not further perpetuate settler colonial patterns of dominance and control.Doctor of Philosophy
11
Huang, Kai. "Population and building factors that impact residential fire rates in large U.S. cities /". View online version, 2009. http://ecommons.txstate.edu/arp/287.
Testo completo
12
Gosselin, Steven Daniel. "The Application of Fire Dynamics to Fire Forensics". Digital WPI, 2004. https://digitalcommons.wpi.edu/etd-theses/1089.
Testo completoAbstract (sommario):
"Fire investigative methodologies were researched and analyzed resulting in the development of an organizational tool to be used for conducting fire investigations. The tool, or field-guide, was designed to aid the investigator in processing structural fire scenes. The tool accomplishes this by providing, 1) thirteen forms for properly documenting the scene, 2) flowcharts which can enhance the investigators intuition for the fire’s growth rate and spread, and 3) basic engineering correlations which can be used to help validate hypotheses the investigator may develop. By employing these methods, the field-guide can be effectively used to lead an investigator through the entire investigation process - from data collection, to the formulation of hypotheses, and ultimately, to quantitative validation."
13
Small, Erin D. "Fire Ecology in the Acadian Spruce-Fir Region and Vegetation Dynamics Following the Baxter Park Fire of 1977". Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/SmallED2004.pdf.
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14
Norris, James C. III. "Of Fire". Digital Commons at Loyola Marymount University and Loyola Law School, 2019. https://digitalcommons.lmu.edu/etd/786.
Testo completoAbstract (sommario):
The teenage daughter of a summer camp slasher, trained to kill sexually active adolescents, questions her father’s work when the camp she’s assigned to terrorize hands out bibles instead of condoms. That’s right, it’s a Christian camp.
15
Parsons, Michael S. "Fire Dance". Kent State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=kent1302553794.
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16
Sullivan, Katherine Aiken. "Necessary Fire". Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/71860.
Testo completoAbstract (sommario):
In this collection the poet explores the gyre of domestic life and specifically how this complex and paradoxical storm pulls women/wives/mothers in many directions at the same time. Using a variety of motifs including glass, water, fire, and bodies, she writes about the deluge of joy, grief, fear, passion, desperation, wonder, salvation, and destruction that accompanies devotion to children, partners, relatives, and friends.Master of Fine Arts
17
Barák, Matyáš. "Fire-Place". Thesis, Konstfack, Inredningsarkitektur & Möbeldesign, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-5822.
Testo completoAbstract (sommario):
A floor, four walls and a ceiling – this space that we take for granted has not always been a feature for humans. In my Degree project, I learn what a space has meant for people. I learn what existed before we built a room for ourselves, what came after, and what was a role of a fireplace in this process. I do so to be build my own relationship with a space of four walls to be able to work with such a space as a context for my work.
18
Olsen, Mary W., e Deborah Young. "Fire Blight". College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2011. http://hdl.handle.net/10150/144803.
Testo completoAbstract (sommario):
3 pp.Originally published: 1998
Fireblight is a bacterial disease that affects only plants in the rose family, particularly apple, pear and pyracantha. This article briefly discusses the symptoms and environmental conditions for this disease and the way to control it.
19
Förell, Lycke. "Fire Works". Thesis, KTH, Arkitektur, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261530.
Testo completoAbstract (sommario):
Fire Works is a cultural center that will seem durable, welcoming and useful. The Culture center will serve as an extension of the central fireplace in the building. Something that gives light and life to the city with the activity created by the presence of the citizens. The building remains within the framework of the environment that surrounds it, a million program area with material dominance of concrete, glass and steel.Fire Works är ett kulturcenter som ska verka tåligt, välkomnande och användbart. Kulturhuset ska fungera som en förlängning av den centrala eldstaden i byggnaden. Något som ger ljus och liv åt staden med den aktivitet som skapas av människans närvaro. Byggnaden håller sig inom ramarna för den miljö som omger den, ett miljonprogramsområde med materiell dominans av betong, glas och stål.
20
Riha, Joyce Marie. "Fire Ants". PDXScholar, 1996. https://pdxscholar.library.pdx.edu/open_access_etds/5150.
Testo completoAbstract (sommario):
Loss is a fundamental part of the human experience, from the loss of security and innocence that comes with the necessary separation of child from parent to the ultimate loss of life. Along the way, there are the losses of jobs, of incomes, of homes; the losses of friendships, of family members, of lovers; the losses of direction, of control, of hope. As cognitive and caring beings, humans struggle to cope with these losses, to greater and lesser degrees of success. This is the theme at the heart of this thesis. Fire Ants is composed of ten short stories, fictive works, which differ in specific subject matter, yet deal unilaterally with issues of loss. Like the venomous creatures that threaten to eat B. D. Packard alive in the title story, life eats away at a number of characters in the collection who are deficient. The narrators in "Aftermath" and "Hues," for example, suffer psychological -- if not physical -- deaths. But not all of the characters lack coping mechanisms, unhealthy as they may sometimes be. As the stories unfold, some characters begin to gain small degrees of perspective and understanding, to learn that while life is full of loss, it is not always entirely bleak. As demonstrated in "Cross Creek," good exists, though it is not always where one might expect it. And life can be full despite loss, as depicted in "Stitches."
21
McNulty, Craig. "A visual fire interest scale : fire interest and personality factors among controls and fire-setters". Thesis, University of East Anglia, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405368.
Testo completo
22
Hakkarainen, Tuula. "Studies on fire safety assessment of construction products /". Espoo [Finland] : Technical Research Centre of Finland, 2002. http://www.vtt.fi/inf/pdf/publications/2002/P459.pdf.
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23
Dunn, Michael J. "Full-Scale Testing of Fire Suppression Agents on Unshielded Fires". University of Canterbury. Civil Engineering, 1998. http://hdl.handle.net/10092/8241.
Testo completoAbstract (sommario):
A comparison is made between CAFS (compressed air Foam), HPD (High Pressure Discharge) and HPD with Class A Solution on unshielded post flashover compartment fires. Extinguishment was carried out by trained fire fighters using hand held lines, whilst the method of attack was carried out following New Zealand Fire Service operating procedures. The effectiveness of each method was determined, by recording the heat release rate using the method of Oxygen Calorimetry. Knockdown effectiveness was also evaluated by recording internal compartment temperatures with the use of thermocouples. In addition comments from firefighters have been recorded and video footage reviewed so that a qualitative assessment could also be made.
It was found that CAFS performed more effectively than HPD or Class A solution, in that less water was needed to obtain a similar knockdown performance. No noticeable benefit was obtained when Class A solution was added to the unmodified HPD line. The biggest advantage of CAFS over the other methods was the ability in being able to attack the compartment indirectly from a distance, which has additional benefits with respect to fire fighter safety.
24
Kahanji, Charles. "Fire performance of ultra-high performance fibre reinforced concrete beams". Thesis, Ulster University, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709889.
Testo completoAbstract (sommario):
Ultra-high performance fibre reinforced concrete (UHPFRC) possesses favourable mechanical properties in comparison with normal strength concrete. Despite a surge in interest among researchers and industries over the past decade, there is negligible research data on the performance of UHPFRC in fire. This situation is compounded by the lack of design guidelines of UHPFRC in major structural design codes both at ambient and at elevated temperatures. The experimental work conducted was divided into three parts. The first part involved casting and testing of nine beams for flexure at ambient temperature. The beams were reinforced with steel fibres at 1, 2 and 4 vol. % and cured in two different conditions (20 °C and 90 °C water). In the second part, nine beams with two different steel fibre dosages (2 and 4 vol. %) were tested at elevated temperatures under an ISO 834 standard fire curve. Seven of these were tested while loaded at three different loading levels (0.2, 0.4 and 0.6). The other two, cured in different conditions, were tested unloaded at elevated temperatures to study the influence of the curing temperature. The third part involved determining the residual strength of the UHPFRC. The residual strength tests sought to investigate the influence of the curing temperature on the strength degradation of UHPFRC, with the aim of understanding the post-fire analysis and repairs. A finite element model was created using DIANA software followed by a parametric study. In the ambient temperature tests, the hot-cured beams recorded higher compressive strength. However, despite having lower compressive strength, the cold-cured beams had the higher load bearing capacity. Exposure of beams to fire was characterised with explosive spalling. Spalling was more prevalent in beams containing 2 vol. % of steel fibres. The beams under the 0.4 load level spalled significantly more than the other two load categories and had the least fire resistance. The addition of polypropylene fibres eliminated spalling and effectively increased the fire resistance of the beam. The curing temperature had an influence on the fire performance of the beams, the hot-cured beam spalled significantly more than the cold-cured. The findings from the residual strength tests indicated that the relative residual strength of cold-cured elements was higher than the hot-cured.
25
Dell'Orfano, Michael E. "Fire Behavior and Fuel Modeling of Flammable Shrub Understories in Northeastern Pine-Oak Forests". Digital WPI, 2004. https://digitalcommons.wpi.edu/etd-theses/1070.
Testo completoAbstract (sommario):
"This thesis evaluates the effectiveness of BEHAVE: Fire Behavior Prediction and Fuel Modeling System in predicting fire behavior in the Northeastern pine-oak forest. This fuel complex is composed primarily of a litter and huckleberry shrub understory with a pitch pine and oak overstory. Measurements of fuel bed physical characteristics, weather and fire behavior are taken from a series of prescribed burn studies in Cape Cod National Seashore in Massachusetts. Site-specific fuel models are constructed which provide the necessary inputs for fire predictions. Observed spread rates and flame lengths are over-predicted by BEHAVE for burns conducted during the winter (dormant season) and under-predicted for burns conducted during the summer (growing season). Attempts to improve winter predictions are successful when the litter moisture is adjusted in order to account for the live wintergreen which increases the overall moisture content of the surface fuels. A sensitivity study is performed where each input parameter is varied over a reasonable interval in order to view its impact on predictions. The model’s high sensitivity to fuel bed depth and 1-hr surface-area-to-volume ratio appear to be the cause for fire prediction deviations during the winter, while the high live fuel moisture contents appear to overwhelm and suppress fire behavior predictions during the summer. It is concluded to overwhelm and suppress fire behavior predictions during the summer. It is concluded that BEHAVE’s representation of fuel complexes as a homogeneous fuel bed with constant properties does not take into account the unique features of the litter and shrub components. An alternative, simple model of fire spread is developed which treats each component as a separate fuel bed. The model is based on a measurement of the heat release rate which can be determined directly through the principle of oxygen consumption calorimetry. Future work using small- and large- scale testing apparatus will help determine the ignition process of the live shrubs and the effect of parameters such as moisture content on the burning characteristics of the fuels. "
26
LeBlanc, David. "Fire Environments Typical of Navy Ships". Digital WPI, 2002. https://digitalcommons.wpi.edu/etd-theses/610.
Testo completoAbstract (sommario):
Current test methodologies used to evaluate the performance of protective clothing do not adequately determine the provided level of protection. The heat fluxes imposed by current evaluation methods are not specifically related to fire environments typical to those the clothing is designed provide protection against. The U.S. Navy is in the process of developing an improved process for testing the fire resistance of daily wear uniforms and protective gear. The first phase of this project involves evaluating currently used evaluation methods and identifying the severity of fire environments that would be expected aboard Navy ships. The examination of the test protocols currently in use identifies major weaknesses, providing the justification for a new test protocol. The first step in developing an improved test protocol is to determine the types of fire scenarios that would be expected aboard Navy vessels. The nearly infinite number of possible fires are reduced to 6 typical cases involving spray fires, pool fires and furniture fires in both compartmented and unconfined cases. An analysis of the environments produced by these types of fires is presented. The effects of compartmentation parameters are also investigated to determine the critical factors that affect the expected fire environment. Expected heat fluxes for all scenarios are presented at a number of distances from the fire.
27
Farris, Calvin Arthur. "Spatial and Temporal Validation of Fire-Scar Fire Histories". Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/195769.
Testo completoAbstract (sommario):
Accurate information about historical fire regimes is needed to understand the long-term effects of fire and climate on ecosystem dynamics and guide ecosystem restoration. Fire scars are used widely to reconstruct historical fire regimes around the world but few empirical validation studies have been conducted. This dissertation consists of three integrated studies aimed at addressing the following questions: (1) how accurate are fire-scar fire histories compared to known patterns of fire occurrence; (2) how do these relationships vary spatially and temporally; (3) how representative statistically are search-based ("targeted) fire-scar sampling techniques? I utilized an empirical corroboration approach to validate fire-scar reconstructions against documentary fire perimeters for a 2,780 hectare ponderosa pine landscape in Saguaro National Park, Arizona (USA). Resampling statistics and spatial modeling were used to quantify interactions between spatial scale, sample size, and fire size. Statistical properties of targeted sampling were assessed by analyzing three case studies containing paired examples of targeted and non-targeted sampling (i.e., systematic and census). I found strong linear relationships between fire-scar synchrony (samples scarred in a given year) and annual area burned. Fire-scar derived estimates of fire frequency metrics, such as Mean Fire Return Interval and Natural Fire Rotation, did not differ significantly from the documentary record, and there was strong spatial coherence between fire frequency maps interpolated from fire-scar data and documentary maps. Scale and sample size dependence of fire-scar detection probabilities were variable for small fire years but relatively weak for widespread fires. This resulted in consistent and predictable influences on fire frequency reconstructions: statistical measures dependent on area burned were relatively stable and robust across a range of scale, sample size, and fire size. Targeted sampling did not differ statistically from non-targeted datasets, but targeted fire-scar data contained proportionately greater sample depth and longer temporal records with fewer samples. These results demonstrate collectively that key temporal and spatial fire frequency parameters can be reconstructed accurately from point-based fire-scar data. They also reaffirm general interpretations and management implications from past fire history research indicating that frequent, widespread burning was an important component of pre-settlement fire regimes in Southwestern ponderosa pine.
28
Parkes, Anthony Richard. "The impact of size and location of pool fires on compartment fire behaviour". Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2009. http://hdl.handle.net/10092/3444.
Testo completoAbstract (sommario):
An understanding of compartment fire behaviour is important for fire protection
engineers. For design purposes, whether to use a prescriptive code or performance
based design, life safety and property protection issues are required to be assessed. The
use of design fires in computer modelling is the general method to determine fire safety.
However these computer models are generally limited to the input of one design fire,
with consideration of the complex interaction between fuel packages and the
compartment environment being simplified. Of particular interest is the Heat Release
Rate, HRR, as this is the commonly prescribed design parameter for fire modelling. If
the HRR is not accurate then it can be subsequently argued that the design scenario may
be flawed. Therefore the selection of the most appropriate fire design scenario is
critical, and an increased level of understanding of compartment behaviour is an
invaluable aid to fire engineering assumptions.
This thesis details an experimental study to enhance the understanding of the impact and
interaction that the size and location of pool fires within an enclosure have upon the
compartment fire behaviour. Thirty four experiments were conducted in a reduced scale
compartment (½ height) with dimensions of 3.6m long by 2.4m wide by 1.2m high
using five typical ventilation geometries (fully open, soffit, door, window and small
window). Heptane pool fires were used, located in permutations of three evenly
distributed locations within the compartment (rear, centre and front) as well as larger
equivalent area pans located only in the centre. This thesis describes the experimental
development, setup and results of the experimental study. To assist in the classification
of compartment fire behaviour during the experiments, a ‘phi’ meter was developed to
measure the time dependent equivalence ratio. The phi meter was developed and
configured to measure O₂, CO₂ and CO. The background development, calibration, and
experimental results are reported. A review of compartment fire modelling using Fire
Dynamics Simulator, has also been completed and the results discussed.
The results of this experimental study were found to have significant implications for
Fire Safety Engineering in that the size of the fire is not as significant as the location of
the fire. The effect of a fire near the vent opening was found to have a significant impact
on compartment fire behaviour with the vent located fuel source increasing the total
compartment heat release rate by a factor of 1.7 to that of a centrally placed pool fire of
the same total fuel area. The assumption that a fire located in the centre of the room
provides for the highest heat release rate is not valid for post-flashover compartment
fires. The phi meter was found to provide good agreement with the equivalence ratio
calculated from total compartment mass loss rates, and the results of FDS modelling
indicate that the use of the model in its current form can not be applied to complex pool
fire geometries.
29
Ho, San-Ping. "Water spray suppression and intensification of high flash point hydrocarbon pool fires". Link to electronic thesis, 2003. http://www.wpi.edu/Pubs/ETD/Available/etd-0829103-153046.
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30
Monson, Elizabeth Ida. "Simulations of Controlled Fires Using the One-Dimensional Turbulence Model with Application to Fire Spread in Wildland Fires". BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3163.
Testo completoAbstract (sommario):
The mechanism of flame propagation in fuel beds of wildland fires is important to understand and quantify fire spread rates. Fires spread by radiative and convective heating and often require direct flame contact to achieve ignition. The flame interface in an advancing fire is unsteady and turbulent, making study of intermittent flames in complex fuels difficult. This thesis applies the one-dimensional turbulence (ODT) model to a study of flame propagation by simulating a lab-scale fire representative of the flame interface in a fuel bed and incorporating solid fuel particles into the ODT code. The ODT model is able to resolve individual flames (a unique property of this model) and provide realistic turbulent statistics. ODT solves diffusion-reaction equations on a line-of-sight that is advanced either in time or in one spatial direction (perpendicular to the line-of-sight). Turbulent advection is modeled through stochastic domain mapping processes. A vertical wall fire, in which ethylene fuel is slowly fed through a porous ceramic, is modeled to investigate an unsteady turbulent flame front in a controlled environment. Simulations of this configuration are performed using a spatial formulation of the ODT model, where the ODT line is perpendicular to the wall and is advanced up the wall. Simulations include radiation and soot effects and are compared to experimental temperature data taken over a range of fuel flow rates. Flame structure, velocities, and temperature statistics are reported. The ODT model is shown to capture the evolution of the flame and describe the intermittent properties at the flame edge, though temperature fluctuations are somewhat over predicted. A solid particle devolatilization model was included in the ODT code to study the convective heating of unburnt solid fuels through direct flame contact. Here the particles are treated as sweet gum hardwood and a single-reaction, first order decomposition model is used to simulate the devolatilization rates. Only preliminary results were presented for a simple case, but this extension of the ODT model presents new opportunities for future research.
31
May, Adam D. R. "Identification of fire gases in early stages of fire in laboratory scaled and full scale fire experiments". Thesis, University of Central Lancashire, 2011. http://clok.uclan.ac.uk/2823/.
Testo completoAbstract (sommario):
A series of reduced scale emulations of standard fires in a 2 m3 enclosure have been developed for studies at laboratory scale enabling useful comparison and correlation with full scale EN54/7 and UL268 test fires. This makes study of standard test fire conditions and products substantially more accessible. The reduced scale test fire emulations have smoke obscuration characteristics matched to the fire standards and show acceptable matching of experimental CO levels Sensor, fire detector, and analytical studies have been carried out on test fires in the 2 m3 enclosure and in a full scale test room. Protocols were developed for capture of gas and vapours from fires on absorbent media and their subsequently desorption and analysis by GC/MS techniques. A data set of GC chromatograms has been generated for full and reduced scale test fires and for a number of non standard fire or false alarm related process including overheating of cooking oils and toasting bread. Analysis of mass spectrometry ion fragmentation spectra has been carried out and a wide range of products identified. Products occurring for a range of different fires include propene, benzene, and some polyaromatics. The value of the scaled test fire emulations has been demonstrated by monitoring response of a range of sensors, detectors and instruments including electrochemical gas sensor, experimental and conventional light scattering smoke detectors, and ion mobility measurement equipment (FAIMS). The study has provided information on fire characteristics and products to inform future research and development on fire detection technologies.
32
Gardelle, Bastien. "Development and resistance to fire of intumescent silicone based coating : fire protection of steel in simulated fire". Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10079/document.
Testo completoAbstract (sommario):
L'objectif de ce travail de thèse est de développer des revêtements intumescents à base de résines de silicone pour la protection de l'acier en cas d’incendie. Les revêtements intumescents ont pour fonction d'assurer l'intégrité des structures en acier exposées au feu, ce métal perdant une grande partie de ses propriétés mécaniques au-dessus de 550°C. Les revêtements intumescents classiquement utilisés sont formulés à partir de résines organiques ce qui conduit à certaines limitations. Dans ce travail, des revêtements intumescents hybrides organiques-inorganiques à base de résines de silicone ont donc été développés. Dans un premier temps, il est montré que les résines silicones de types RTV (room temperature vulcanized) présentent les meilleures propriétés de barrière thermique. Par la suite, du graphite expansible a été incorporé en tant qu’agent gonflant à la résine silicone, pour permettre l'expansion du revêtement à haute température. Grâce à des interactions spécifiques entre le silicone et le graphite expansé, le revêtement obtenu présente d'excellentes propriétés de protection thermique. Ces résultats ont été attribués à ses propriétés de gonflement, à sa faible conductivité thermique à haute température et à la bonne cohésion du char développé. Des charges minérales supplémentaires ont ensuite été incorporées dans la formulation afin d'augmenter les propriétés mécaniques du char. Enfin, les paramètres essentiels régissant les propriétés de barrières thermiques des revêtements siliconés ont été mises en évidence. En jouant sur ces paramètres, il est possible de formuler des revêtements performants pour la protection de l'acier au cours d'un incendieThe purpose of this Ph.D work is to develop intumescent coatings for the protection of steel against fire. The aim of this coating is to ensure the integrity of steel structure exposed to fire since steel loses more than 50% of its load capacity above 550°C. Intumescent coatings expand in case of fire leading to the formation of an insulative barrier limiting the heat transfer from the heat source to the substrate. Most of these coatings are organic based and thus exhibit some limitations. Thus, in this work, hybrid organic-inorganic coatings based on silicone resins were developed. In a first step, it is shown that room temperature vulcanized silicone rubber is the silicone matrix exhibiting the best insulative properties in fire scenarios. Expandable graphite is then used as blowing agent to make the silicone swell when exposed to fire. Due to several interactions between silicone and expandable graphite at high temperature, the coating exhibits excellent fire performance. This performance was attributed to the swelling properties, the low thermal conductivity at high temperature and the good cohesion of the developed char. Additional fillers such as calcium carbonate and organoclay are incorporated in the formulation to increase the mechanical properties of the char. Finally, the critical parameters governing the insulative properties of intumescent silicone coatings have been determined. Moreover, it was pointed out that it is possible to develop silicone coatings exhibiting better fire performance than commercial intumescent paint for the protection of steel against fire in both hydrocarbon and cellulosic fire scenarios
33
Gardelle, Bastien. "Development and resistance to fire of intumescent silicone based coating : fire protection of steel in simulated fire". Electronic Thesis or Diss., Lille 1, 2013. http://www.theses.fr/2013LIL10079.
Testo completoAbstract (sommario):
L'objectif de ce travail de thèse est de développer des revêtements intumescents à base de résines de silicone pour la protection de l'acier en cas d’incendie. Les revêtements intumescents ont pour fonction d'assurer l'intégrité des structures en acier exposées au feu, ce métal perdant une grande partie de ses propriétés mécaniques au-dessus de 550°C. Les revêtements intumescents classiquement utilisés sont formulés à partir de résines organiques ce qui conduit à certaines limitations. Dans ce travail, des revêtements intumescents hybrides organiques-inorganiques à base de résines de silicone ont donc été développés. Dans un premier temps, il est montré que les résines silicones de types RTV (room temperature vulcanized) présentent les meilleures propriétés de barrière thermique. Par la suite, du graphite expansible a été incorporé en tant qu’agent gonflant à la résine silicone, pour permettre l'expansion du revêtement à haute température. Grâce à des interactions spécifiques entre le silicone et le graphite expansé, le revêtement obtenu présente d'excellentes propriétés de protection thermique. Ces résultats ont été attribués à ses propriétés de gonflement, à sa faible conductivité thermique à haute température et à la bonne cohésion du char développé. Des charges minérales supplémentaires ont ensuite été incorporées dans la formulation afin d'augmenter les propriétés mécaniques du char. Enfin, les paramètres essentiels régissant les propriétés de barrières thermiques des revêtements siliconés ont été mises en évidence. En jouant sur ces paramètres, il est possible de formuler des revêtements performants pour la protection de l'acier au cours d'un incendieThe purpose of this Ph.D work is to develop intumescent coatings for the protection of steel against fire. The aim of this coating is to ensure the integrity of steel structure exposed to fire since steel loses more than 50% of its load capacity above 550°C. Intumescent coatings expand in case of fire leading to the formation of an insulative barrier limiting the heat transfer from the heat source to the substrate. Most of these coatings are organic based and thus exhibit some limitations. Thus, in this work, hybrid organic-inorganic coatings based on silicone resins were developed. In a first step, it is shown that room temperature vulcanized silicone rubber is the silicone matrix exhibiting the best insulative properties in fire scenarios. Expandable graphite is then used as blowing agent to make the silicone swell when exposed to fire. Due to several interactions between silicone and expandable graphite at high temperature, the coating exhibits excellent fire performance. This performance was attributed to the swelling properties, the low thermal conductivity at high temperature and the good cohesion of the developed char. Additional fillers such as calcium carbonate and organoclay are incorporated in the formulation to increase the mechanical properties of the char. Finally, the critical parameters governing the insulative properties of intumescent silicone coatings have been determined. Moreover, it was pointed out that it is possible to develop silicone coatings exhibiting better fire performance than commercial intumescent paint for the protection of steel against fire in both hydrocarbon and cellulosic fire scenarios
34
Richards, Paul Leonard Edward. "Characterising a Design Fire for a Deliberately Lit Fire Scenario". Thesis, University of Canterbury. Civil Engineering, 2008. http://hdl.handle.net/10092/1779.
Testo completoAbstract (sommario):
Deliberately lit fires make up over 15% of all fires in New Zealand buildings yet they are
typically omitted from the design brief for fire engineering purposes. This report examines
where deliberately lit fires should be included as part of the fire engineering design by
examination of all deliberately lit fires recorded in the New Zealand Fire Incident
Reporting System (NZ FIRS) between the years 1996 and 2006.
The main types of buildings identified where consideration of deliberately lit fires within
the design would provide benefits are:
· Prisons
· Psychiatric institutions
· Schools
· Crowd activities
· Attached accommodation
The report also examined what is required to include deliberately lit fires as part of the
design process. Based on an analysis of the fire incident statistics, the majority of
deliberately lit fires are the result of unplanned activities and existing design fires will be
adequate. Two critical fire scenarios were identified as exceeding these requirements, the
ignition of multiple fires and the use of accelerants. Greater life safety benefits are obtained
by considering accelerants.
In the case of multiple fires, each fire is likely to be within the capabilities of a fire
engineered building however a number of such fires may overwhelm the fire protection
features of a building. A number of issues for the fire engineer to consider are briefly
discussed. In the case of accelerants, a number of experiments were completed to
characterise the heat release rate and species production of a Molotov cocktail based on the
fuel volume used. A second round of experiments extended this work by examining the
scenario where a Molotov cocktail containing 1000 milliliters of petrol was deployed
within a stairwell.
35
Setser, Katherine. "Fighting Fire with Fire: Redefining the Interior Design Value Proposition". University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1377873629.
Testo completo
36
Fox, David Christopher Alexander. "The fire performance of restrained polymer-fibre-reinforced concrete composite slabs". Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/17998.
Testo completoAbstract (sommario):
Composite slab flooring systems for steel-framed buildings consist of a profiled steel deck and a cast in-situ slab. The slab traditionally includes a layer of light gauge steel mesh reinforcement. This mesh is placed near the surface, which controls the early-age cracking caused by concrete drying and shrinkage. The steel mesh also performs a vital structural role at high temperatures. Structural fire tests and numerical investigations over the last 15 years have established that the mesh can provide enhanced fire resistance. A load-carrying mechanism occurs in fire with the mesh acting as a tensile catenary, spanning between perimeter supports. This structural mechanism is currently utilised regularly in the performance-based fire engineering design of steel-framed buildings. In a recent development, this mesh can be removed by using concrete with dispersed polymer fibre reinforcement to form the composite slab. The polymer-fibre-reinforced concrete (PFRC) is poured onto the deck as normal, and the fibres resist early crack development. For developers this technique has several advantages over traditional reinforcing mesh, such as lower steel costs, easier site operations and faster construction. However, to date the fire resistance of such slabs has been demonstrated only to a limited extent. Single element furnace tests with permissible deflection criteria have formed the basis for the fire design of such slabs. But these have not captured the full fire response of a structurally restrained fibre-reinforced slab in a continuous frame. The polymer fibres dispersed throughout the slab have a melting point of 160ºC, and it is unclear how they contribute to overall fire resistance. In particular, there has been no explanation of how such slabs interact with the structural perimeter to maintain robustness at high deflections. This project was designed to investigate the structural fire behaviour of restrained polymer-fibre-reinforced composite slabs. An experimental series of six slab experiments was designed to investigate the effects of fibre reinforcement and boundary restraint. A testing rig capable of recording the actions generated by the heat-affected slab was developed and constructed. Model-scale slab specimens were tested with different reinforcement and perimeter support conditions, to establish the contributions to fire resistance of the polymer fibres and applied structural restraint.
37
Riccius, Eva Henrika. "Scale issues in the fire history of a fine-grained landscape". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ37620.pdf.
Testo completo
38
Ierardi, James A. "A computer model of fire spread from engine to passenger compartments in post-collision vehicles". Link to electronic version, 1999. http://www.wpi.edu/Pubs/ETD/Available/etd-052499-135914/unrestricted/thesis.pdf.
Testo completo
39
Candy, Katherine. "Mapping fire affected areas in northern Western Australia - towards an automatic approach". Thesis, Candy, Katherine (2004) Mapping fire affected areas in northern Western Australia - towards an automatic approach. Masters by Research thesis, Murdoch University, 2004. https://researchrepository.murdoch.edu.au/id/eprint/500/.
Testo completoAbstract (sommario):
Wildfires across northern Australia are a growing problem with more than 2.5 million hectares being burnt each year. Accordingly, remote sensing has been used as a tool to routinely monitor and map fire histories. In northern Western Australia, the Department of Land Information Satellite Remote Sensing Services (DLI SRSS) has been responsible for providing and interpreting NOAA-AVHRR (National Oceanic and Atmospheric Administration-Advanced Very High Resolution Radiometer) data. SRSS staff utilise this data to automatically map hotspots on a daily basis, and manually map fire affected areas (FAA) every nine days. This information is then passed on to land managers to enhance their ability to manage the effects of fire and assess its impact over time.
The aim of this study was to develop an algorithm for the near real-time automatic mapping of FAA in the Kimberley and Pilbara as an alternative to the currently used semimanual approach. Daily measures of temperature, surface reflectance and vegetation indices from twenty nine NOAA-16 (2001) passes were investigated. It was firstly necessary to apply atmospheric and BRDF corrections to the raw reflectance data to account for the variation caused by changing viewing and illumination geometry over a cycle.
Findings from the four case studies indicate that case studies 1 and 2 exhibited a typical fire response (visible and near-infrared channels and vegetation indices decreased), whereas 3 and 4 displayed an atypical response (visible channel increased while the near-infrared channel and vegetation indices decreased). Alternative vegetation indices such as GEMI, GEMI3 and VI3 outperformed NDVI in some cases. Likewise atmospheric and BRDF corrected NDVI provided better performance in separating burnt and unburnt classes.
The difficulties in quantifying FAA due to temporal and spatial variation result from numerous factors including vegetation type, fire intensity, rate of ash and charcoal dispersal due to wind and rain, background soil influence and rate of revegetation. In this study two different spectral responses were recorded, indicating the need to set at least two sets of thresholds in an automated or semi-automated classification algorithm. It also highlighted the necessity of atmospheric and BRDF corrections.
It is therefore recommended that future research apply atmospheric and BRDF corrections at the pre-processing stage prior to analysis when utilising a temporal series of NOAAAVHRR data. Secondly, it is necessary to investigate additional FAA within the four biogeographic regions to enable thresholds to be set in order to develop an algorithm. This algorithm must take into account the variation in a fire's spectral response which may result from fire intensity, vegetation type, background soil influence or climatic factors.
40
Candy, Katherine. "Mapping fire affected areas in northern Western Australia - towards an automatic approach". Candy, Katherine (2004) Mapping fire affected areas in northern Western Australia - towards an automatic approach. Masters by Research thesis, Murdoch University, 2004. http://researchrepository.murdoch.edu.au/500/.
Testo completoAbstract (sommario):
Wildfires across northern Australia are a growing problem with more than 2.5 million hectares being burnt each year. Accordingly, remote sensing has been used as a tool to routinely monitor and map fire histories. In northern Western Australia, the Department of Land Information Satellite Remote Sensing Services (DLI SRSS) has been responsible for providing and interpreting NOAA-AVHRR (National Oceanic and Atmospheric Administration-Advanced Very High Resolution Radiometer) data. SRSS staff utilise this data to automatically map hotspots on a daily basis, and manually map fire affected areas (FAA) every nine days. This information is then passed on to land managers to enhance their ability to manage the effects of fire and assess its impact over time.
The aim of this study was to develop an algorithm for the near real-time automatic mapping of FAA in the Kimberley and Pilbara as an alternative to the currently used semimanual approach. Daily measures of temperature, surface reflectance and vegetation indices from twenty nine NOAA-16 (2001) passes were investigated. It was firstly necessary to apply atmospheric and BRDF corrections to the raw reflectance data to account for the variation caused by changing viewing and illumination geometry over a cycle.
Findings from the four case studies indicate that case studies 1 and 2 exhibited a typical fire response (visible and near-infrared channels and vegetation indices decreased), whereas 3 and 4 displayed an atypical response (visible channel increased while the near-infrared channel and vegetation indices decreased). Alternative vegetation indices such as GEMI, GEMI3 and VI3 outperformed NDVI in some cases. Likewise atmospheric and BRDF corrected NDVI provided better performance in separating burnt and unburnt classes.
The difficulties in quantifying FAA due to temporal and spatial variation result from numerous factors including vegetation type, fire intensity, rate of ash and charcoal dispersal due to wind and rain, background soil influence and rate of revegetation. In this study two different spectral responses were recorded, indicating the need to set at least two sets of thresholds in an automated or semi-automated classification algorithm. It also highlighted the necessity of atmospheric and BRDF corrections.
It is therefore recommended that future research apply atmospheric and BRDF corrections at the pre-processing stage prior to analysis when utilising a temporal series of NOAAAVHRR data. Secondly, it is necessary to investigate additional FAA within the four biogeographic regions to enable thresholds to be set in order to develop an algorithm. This algorithm must take into account the variation in a fire's spectral response which may result from fire intensity, vegetation type, background soil influence or climatic factors.
41
Candito, Kara Anne. "Thinking about fire". College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1668.
Testo completoAbstract (sommario):
Thesis (M.F.A.) -- University of Maryland, College Park, 2004.Thesis research directed by: Dept. of English. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
42
Nolan, Margo J. "Tinged With Fire". VCU Scholars Compass, 2006. http://hdl.handle.net/10156/2209.
Testo completo
43
Lamont, Robert W. "Direct fire synchronization". Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23644.
Testo completoAbstract (sommario):
Approved for public release; distribution is unlimitedThis thesis analyzes defense in sector missions adapted from the National Training Center and conducted with the Janus(A) high resolution combat model to check for relationships which influence direct fire synchronization. This analysis should enhance the monitoring of unit performances in the area of concentration of massing of fires consistent with the commander's intent. The combat fighting vehicle, which combines the characteristics of mobility with high volumes of firepower, dominates the desert battlefield and is the focus of this study. Graphical methods and analytic techniques are developed the describe the battle in terms of direct fire synchronization and a mission measure of effectiveness (MOE). This research is being conducted under the E.S. Army's Battle Enhanced Analysis methodologies (BEAM) study, which is developing objective doctrinal AirLand battle measures and visual displays to enhance training analysis. The thesis also describes the training environment of the NTC, defense in sector doctrine for both the U.S. Army and the U.S. Marine Corps with emphasis on asymmetries, and threat offensive doctrine
44
Ignacio, Carolyn D. "Playing with Fire". Digital Commons at Loyola Marymount University and Loyola Law School, 1988. https://digitalcommons.lmu.edu/etd/572.
Testo completo
45
Paquette, Russell G. "Kiss of Fire". Digital Commons at Loyola Marymount University and Loyola Law School, 1992. https://digitalcommons.lmu.edu/etd/651.
Testo completo
46
Schlachter-Townsend, Jessica O. "Form Through Fire". Kent State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=kent1210294330.
Testo completo
47
Ford, Sarah. "Fire and Gold". Youngstown State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1559072363615141.
Testo completo
48
Assad, Mahmoud Abdulatif. "Improved fire modelling". Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/improved-fire-modelling(b5bf15d8-890b-4201-a800-f1c810a88ba1).html.
Testo completoAbstract (sommario):
This thesis describes the development and validation of a modified eddy viscosity model to take into account the misalignment between stress a_{ij} and strain S_{ij} fields for reacting flow. The stress-strain misalignment is quantified by introducing a C_{as}=-a_{ij}S_{ij} /\sqrt{2S_{ij}S_{ij}} parameter. A new transport equation for C_{as} was derived from a full Reynolds stress model (RSM). The C_{as} transport equation was coupled to a standard EVM model (e.g. k-\omega SST) to form three equations model. This model is a new version of the SST-C_{as} model introduced by Revell (Revell2006), to incorporate buoyancy and combustion effects for buoyant reacting flow (e.g. fire). The performance of the proposed model was initially investigated via non-reacting buoyant plumes with different level of unsteadiness. The buoyant plumes were also simulated using different turbulence models and the results were compared to proposed model and experimental data. The model shows significant improvements for velocity and scalar profiles in region closed to plume centreline compared to the original SST model. The SST-C_{as} model was then applied for a real fire test case (Steckler room), and the results were compared to experimental data and results of RSM models. The SST-C_{as} model generally yields better than classical EVM models and reduces the gap between the RSM and EVM prediction with 25-30\% additional computational expenses. This work is still under development and validation for reacting flows, further work is going on to include the turbulence combustion interaction and validate it with DNS data.
49
Countryman, Elizabeth Katherine. "Hold your fire". College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3598.
Testo completoAbstract (sommario):
Thesis (M.F.A) -- University of Maryland, College Park, 2006.Thesis research directed by: Dept. of English. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
50
Deneke, Fred. "Fire-Resistant Landscaping". College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2002. http://hdl.handle.net/10150/146944.
Testo completo