Architecture Commons^™

Tricritical Point As A Crossover Between Type-Is And Type-Iis Bifurcations, Prabakaran Rajamanickam, Joel Daou

Progress in Scale Modeling, an International Journal

A tricritical point as a crossover between (stationary finite-wavelength) type-I_s and (stationary longwave) type-II_s bifurcations is identified in the study of diffusive-thermal (Turing) instability of flames propagating in a Hele-Shaw channel in a direction transverse to a shear flow. Three regimes exhibiting different scaling laws are identified in the neighbourhood of the tricritical point. For these three regimes, sixth-order partial differential equations are obtained governing the weakly nonlinear evolution of unstable solutions near the onset of instability. These sixth-order PDES may be regarded as the substitute for the classical fourth-order Kuramoto­­­­­­–­­Sivashinsky equation which is not applicable near the …

Self-Reported Consumption Of Bottled Water V. Tap Water In Appalachian And Non-Appalachian Kentucky, Jason W. Marion

Journal of Appalachian Health

Introduction: Quantitative studies on drinking water perceptions in Appalachia are limited. High-profile water infrastructure failures in the U.S. and Eastern Kentucky, coupled with human-made and natural disasters in the Appalachian Region, have likely impacted opinions regarding tap water.

Purpose: To use existing unexplored data to describe baseline tap water v. bottled water consumption in Kentucky.

Methods: Telephone-based cross-sectional data were obtained from the 2013 Kentucky Health Issues Poll (KHIP) directed by the Foundation for a Healthy Kentucky. Among many items in KHIP, self-reported consumption of bottled water over tap water, reasons for bottled water use, and demographic data were obtained. …

Scale Model Experiments Of Toxic Gas Production From The Combustion Of Polymers When Applied With Different Droplet Sizes Of Water Mist, Nicharee Thinnakornsutubutr, Masayuki Mizuno, Kazunori Kuwana

Progress in Scale Modeling, an International Journal

This research experimentally investigated the combustion of polymeric materials with water mist application in an enclosure, with an emphasis on the production of toxic gases. Two different diameters, ~100 and ~260 μm, were tested. The experimental conditions were determined based on Froude similarity laws for low drop Reynolds number conditions. Droplets and polymers’ physical and chemical properties influence the burning/extinguishing behavior and toxic-gas evolution. In general, larger droplets can extinguish a fire in a shorter time, and toxic gas concentrations in a test chamber decreased more rapidly. However, the large droplets tended to cause the flame expansion phenomenon for thermoplastics …

A Simplified Model For The Intermediate Structure Of Strong Fire Whirls, Forman A. Williams

Progress in Scale Modeling, an International Journal

A model is described for the overall structure of intense fire whirls, based on a spatially evolving vortex, with circulation enhancement driven by the axial acceleration of low-density gas in the core through the axial pressure gradient. The axial acceleration increases the entrainment rate into the core which, through mass conservation, increases the circulation if the angle between the tangential and radial velocity components remains fixed. The two-zone model employs general balance equations for regions inside and outside a cylinder of fixed radius, each inviscid, the inside region being presumed to have a constant density small compared with the (constant) …

Reduced-Scale Experiments And Numerical Simulations Of Informal Settlement Dwelling Fires, Vigneshwaran Narayanan, Antonio Cicicone, Ayden D. Botha, Richard Shaun Walls

Progress in Scale Modeling, an International Journal

Informal settlement dwellings (ISDs) house approximately one billion people in the developing world and this number is expected to double by the year 2030. Contemporary research on ISD fires has focused on understanding the fire dynamics within individual dwellings (micro-scale) and fire spread in settlements consisting of multiple dwellings (macro-scale). This paper aims to do two primary things: investigate if scaling methods that were derived for compartments with thermally thick boundaries can be applied to ISDs (compartments with thermally thin boundaries), and if they can adequately represent the most important phenomena associated with full-scale ISD fires; and demonstrate Fire Dynamics …

A Global Survey Of Infection Control And Mitigation Measures For Combating The Transmission Of Covid-19 Pandemic In Buildings Under Facilities Management Services, Hadi Sarvari, Zhen Chen, Daniel W. M. Chan, Ellyn A. Lester, Nordin Yahaya, Hala Nassereddine, Aynaz Lotfata

Civil Engineering Faculty Publications

Facilities management along with health care are two important aspects in controlling the spread of infectious diseases with regard to controlling the outbreak of global COVID-19 pandemic. Hence, with the increasing outbreak of COVID-19 pandemic, the importance of examining the relationship between the built environment and the outbreak of infectious diseases has become more significant. The aim of the research described in this article is to develop effective infection control and mitigation measures to prevent the transmission of COVID-19 pandemic in the built environment. This study seeks to answer the question of how the facilities management industry can help reduce …

Open-Field Scale-Model Experiments Of Fire Whirls Over L-Shaped Line Fires, Yuto Iga, Kazunori Kuwana, Kozo Sekimoto, Yuji Nakamura

Progress in Scale Modeling, an International Journal

This paper presents the results of open-field scale-model experiments of fire-whirl formation over line fires. L-shaped line fires were burned in crosswinds, and the processes of fire-whirl formation were observed. The flame height was measured using an image-processing technique, while two-dimensional velocity components were measured at two different locations using ultrasonic anemometers. Two tests were selected for comparison: test A, in which intense fire whirls repeatedly formed, and test B, in which no whirls were observed. In test A, the wind flow was bent by the fire plume, creating swirling flows near the burning area, thereby forming fire whirls. On …

Effect Of Reduced Plume Entrainment On The Burning Rate Of Porous Fuel Beds, Sara Mcallister

Progress in Scale Modeling, an International Journal

Large outdoor fires often exhibit unexpected fire behavior, particularly compared with much smaller fires. Understanding the difference between large- and small-scale fires is of importance for both fire behavior predictions and safety. Large fires are often characterized by very tall plumes that can extend to the stratosphere. Particularly as the actively burning area increases, plumes in large-scale fires likely entrain relatively little and may act in a similar fashion to a chimney. To explore the possible changes in burning rate due to the chimney effect, experiments were conducted with wood cribs burned with a chimney of variable height. The burning …

Extinguishment Of Diffusion Flames Formed Over A Porous Plate Burner Using Rubber Balloons Filled With Inert Gases, Hiroyuki Torikai, Shinya Kudo

Progress in Scale Modeling, an International Journal

We have proposed an inert gas, rubber-balloon extinguishing method which might increase the effectiveness of extinguishing flames and decreasing the amounts of agents needed for fire suppression. Hence, extinguishing experiments have been performed to further clarify possible extinguishing characteristics, mechanisms and scaling effects of this method. Carbon dioxide, nitrogen, argon and helium gases were used as the extinguishing agents. Methane-air and propane-air diffusion flames were formed on two different diameter, round porous plate burner and used as the targets for extinguishment. The extinguishing probabilities were measured, and the extinguishing processes were observed with a high-speed camera. As a result, an …

Data-Driven Tools Guided By First-Principles For Scale Modeling, Sadegh Poozesh

Progress in Scale Modeling, an International Journal

For decades, traditional scale-modeling techniques have been relying on first-principles models (FPMs). FPMs have been used to find non-dimensional numbers (PIs) and identify normalized underlying forces and energies behind the phenomenon in focus. The two main challenges with FPM-based PIs extraction are finding the relevant PIs and proper correlations between PIs. The emergence and surge of data-driven modeling (DDM) provide a new opportunity to leverage experimental data in model development across scales/plants. In this paper, first, the two mentioned issues in PIs development will be elaborated to reveal the gap, and second, a new insight into scale modeling and similarity …

Political Economy Of The Production Of Heritage Space In A Centro Histórico: Attracting Real Estate Capital, Expelling People. The Case Of Cartagena (Colombia), Camilo Rey-Sabogal

Theses and Dissertations--Geography

Cartagena is a South American city whose historical built environment has been recognized as a World Heritage Site due to the preservation of elements of the Spanish military architecture of the 16th, 17th and 18th centuries. This recognition promoted a tourist and real estate boom in the Centro Histórico and, as a result, its inhabitants have faced gentrification dynamics that are expelling them to other areas of the city. During the last 15 years, these dynamics have shown a strong acceleration. Therefore, the Centro Histórico is experiencing, on the one hand, huge inflows of capital for the purchase of properties …

Why Won’T Grandma Cross The Road? Neighborhood Perceptions And Walking Behavior Among Older Adults In Lexington, Kentucky, Sadie Middleton

Theses and Dissertations--Urban and Environmental Design

Many urban places contain subtle details that can unintentionally deter pedestrian activity. These details can be assessed through six themes: safety, comfort, pedestrian infrastructure, aesthetics, proximity, and ease of navigation. Adults over age 65 may have more concerns about walking in urban settings than people in other age groups. This study identifies urban design elements that encourage and discourage walking among older adults and makes recommendations for design improvements. Study participants (n= 67) completed an online survey about walking behaviors, perceptions of health and community, and perceptions of seven unidentified scenes of pedestrian environments in Lexington, Kentucky. Findings suggest that …

Reserved For The Whole Earth: Forms Of Evidence, Ought Anxiety, And The Futures Of Geographic Inquiry, Eric M. Robsky Huntley

Theses and Dissertations--Geography

This dissertation examines geographic forms of evidence in the practices of landscape architects and geographers. I analyze evidence not only as an epistemic phenomenon, but as an aesthetic one, as well. Convincing an audience that the world is (or should be) one way and not another requires that knowledges be stacked, extended, and stitched together in a manner admissable to an audience. In the first two chapters, I use the case of the landscape architect Ian McHarg to examine how his approach to integrating scientific knowledge---a aesthetic response to what I theorize as 'ought anxiety'---grew alongside the environmental bureaucracy in …

Evaluating The After Effects Of Successful Hazard Mitigation: Calculating The Social Benefit Of London, Kentucky’S Post-Mitigation Creation Of Public Park Space, Christopher Greyson Evans

MPA/MPP/MPFM Capstone Projects

After receiving FEMA hazard mitigation grants to improve weather and water management infrastructure, many communities are able to complete additional capital improvement projects that would not have been possible without the improvements facilitated by FEMA grants. FEMA projects often convert tracts of land to greenspace, or stabilize flood-damaged lands. Many communities then build public parks on such lands as a direct result. Although these parks or greenspaces create a benefit for their communities, FEMA’s methods for post-project evaluation, known as “Loss Avoidance Studies,” do not typically take the costs and benefits of new parks or greenspaces into consideration. From 2011-2015, …

A Qualitative Analysis On The Feasibility Of Implementing Elements Of The Main Street Approach For The City Of Mason, Ohio, Mykaelah Mercer

MPA/MPP/MPFM Capstone Projects

The City of Mason is a thriving community of roughly 30,000 residents to the Northeast of Cincinnati, Ohio. Mason is projected to see continued and significant growth, in terms of both population and development, over the years to come. In 2010, the City of Mason released a Comprehensive Plan that detailed input from a variety of stakeholders and a list of priorities and goals to implement over the course of the plan’s projected 15-to 20-year lifetime. The priorities and goals proposed in the plan have varying timelines projected for completion and differ in nature for each different department within the …

Entrepreneurialism Meets The Sustainable City: The Case Of Lexington’S Town Branch Commons, Thomas E. Grubbs

Theses and Dissertations--Geography

Although the idea of the entrepreneurial city is nothing new, recent research in contemporary urban geography and related disciplines indicates that the modus operandi of such entrepreneurial endeavors has shifted, as a result of an increasing recognition and acceptance of global climate change, to include and even prioritize sustainable urban development discourses and practices. While these discourses purportedly culminate in the production of the “sustainable city,” they often fail to deliver upon their promise to create a greener, more sustainable city for all. Such practices, in an effort to help cities obtain an urban sustainability fix (While et al. 2004), …

The Effects Of Land Use Deregulations In The Capitol Region On Gross Regional Domestic Product In South Korea, Youngchul Kim

MPA/MPP/MPFM Capstone Projects

South Korea has implemented strong land use regulations controlling the growth of the capitol region (Seoul, and around areas) in order to encourage balanced regional development between the capitol area and the non-capitol area. However, there are ongoing debates about the relationship between the regulatory policies and the balanced regional development.

The purpose of this study is to examine the extent of the effect that the land use deregulation in the capitol region has on growth of both regions. To address this question, I use a difference-in-differences model to empirically analyze how the land use deregulation in the capitol region …

Impermeable Assemblages: Flooding, Urban Infrastructure, And Stormwater Politics In São Paulo, Brazil, Nate Millington

Theses and Dissertations--Geography

This project analyzes efforts to remake the relationship between water and city in São Paulo, Brazil. Currently experiencing overlapping problems of flooding, scarcity, and pollution, São Paulo illustrates the challenges of managing water in a contemporary mega-city. This dissertation subsequently considers the city’s water management through an approach that borrows from urban political ecology, social studies of science, and post-colonial urban theory. With an epistemological grounding in these literatures, this project analyzes ongoing conversations about water management in São Paulo, and focuses on how water is encountered and engaged with in the landscape by engineers, artists, and activists. This project …

Mapping As Performing Place, Aslihan Senel

disClosure: A Journal of Social Theory

Mapping is an emerging act in contemporary discourse to understand, criticize, and re-imagine complex cultural, social, and physical relationships in the built environment. Maps are documents nearly as old as the human history in representing the relationships of people to land. Yet, mapping rather than map-making is a newly created concept as an alternative way of thinking about this relationship. Mapping refers less to a representation than a performance, in which the maker, place, and the product redefine, reposition and reproduce each other in the process. Mapping may allow developing an embodied and critical understanding of place, which is continuously …

Domestic Megalithic Architecture: An Analysis Of Status And Community At And Around The Ancient Maya Site Of Uci, Yucatan, Mexcio, Joseph S. Stair

Theses and Dissertations--Anthropology

Variation in domestic architecture results from the agency households exercise in their daily lives. This study defines the domestic expression of the megalithic architectural style, based on data collected in and around the ancient Maya site of Ucí, Yucatan, Mexico, by comparing it to its expression in monumental structures. It also shows how the analysis and documentation of architectural variability away from the monumental core can locate more than just commoners and elites within the social organization of the Ancient Maya. This analyzes provides evidence for higher social status for households that possess megalithic architecture since they also possess larger …

Re-Placing Sprawl: Mapping Place In An American Suburb, Ryan M. Cooper

Theses and Dissertations--Geography

In the post-World War II era land development in the United States has largely been focused on the expansion away from urban centers and out into the surrounding suburbs. While the development of suburbs began with utopian ideals of spiritual wholeness, their actual manifestation on the American landscape has been subject to harsh critiques about their long-term economic and environmental feasibility, fostering of social alienation, and general placelessness. In this thesis I address the criticism of suburbs as placeless, asking ―What are the particular practices of place-making in North American suburbs?‖ Examining interviews, cognitive map surveys, participant observation, archival materials, …

Emotion, Community Development, And The Physical Environment: An Experimental Investigation Of Measurements, George E. Boone

Theses and Dissertations--Community & Leadership Development

A wide range of research fields have studied how emotions and behavior are affected by the physical environment. This gestalt theorist approach of experimental research as well seeks to measure emotion (using the valence-arousal scale) and micro-scale community development interactions when weighted physical environment factors are adjusted. Community development (CD) interactions at the micro-scale have received but slight attention from scholars in the CD research field and this study aims partially to investigate developing objective measures from social observations. CD interactions from recordings along with self-reported emotion through surveys in four quasi-experimental groups (where the environments were constructed based on …

The Design Of A Psychiatric Residential Treatment Facility In Wheelwright, Kentucky Serving Adolescent Males, Jenna Clem

Kaleidoscope

During the spring semester of 2010, I have been working on the design of a psychiatric residential treatment facility in Wheelwright, Kentucky as part of the requirements for ID 659, Interior Design Graduate Studio. I am a senior, but was allowed permission to enroll in this class because of my interest in research-based design. The facility will offer therapy services in a home environment for seven adolescents between the ages of ten and seventeen. This paper describes the process that I followed throughout the design process and the specific issues that were addressed in the final solution. The design process …

The Effects Of Geographical And Climatic Setting On The Economic Advantages Of Alternative Flood Control Measures, Clyde R. Dempsey, L. Douglas James

KWRRI Research Reports

It has long been realized that tributary urban development and channel improvement greatly affect the flow regime in a given watershed. A previous study used the Stanford Watershed Model to derive relationships expressing how the flood peaks in Sacramento, California, might be expected to vary with changing conditions of urbanization, channelization, and tributary drainage area. In order to observe the effects of climatic setting and geographical location on these relationships, the same type of analysis was applied to a drainage area near Louisville, Kentucky.

If reservoir storage is to be considered in a flood control program, it is necessary to …