Architecture Commons^™

Natural Asset-Based Community Development In The Nebraska Community Foundation Network, Kristen Ohnoutka

Community and Regional Planning Program: Theses and Student Projects

As rural communities explore new ways to stimulate growth and development in their place, one of the biggest challenges they face is reinventing what rural community development is and has been. The conventional way of thinking goes communities must attract new businesses to attract new workers to grow a community’s population. However, population growth and industry attraction are not always equivalent to progress, especially not in rural communities. For decades, rural communities have withstood the boom and bust of industry and economy, whether it be agricultural, industrial, manufacturing, etc. These industries and more have demanded the extraction of rural communities’ …

Higher Sound Levels In K-12 Classrooms Correlate To Lower Math Achievement Scores, Laura Caroline Brill, Lily M. Wang

Durham School of Architectural Engineering and Construction: Faculty Publications

Sound levels from occupied classrooms have been gathered from 220 classrooms across four grade levels (3, 5, 8 and 11) over six school days each and processed with k-means clustering into speech and non-speech clusters. Three metrics describing the classroom acoustics, including the average daily A-weighted equivalent level for non-speech, the average daily difference between the A-weighted equivalent levels for speech and nonspeech (a signal to noise ratio), and the mid-frequency averaged reverberation time, were analyzed against classroom-aggregated standardized reading and math achievement test scores, while controlling for classroom demographics including socioeconomic status. Interactions between the metrics and demographics were …

Investigation Of The Prevalence Of Faults In The Heating, Ventilation, And Air-Conditioning Systems Of Commercial Buildings, Amir Ebrahimifakhar

Durham School of Architectural Engineering and Construction: Dissertations, Thesis, and Student Research

This dissertation describes a large-scale investigation of heating, ventilation, and air-conditioning (HVAC) fault prevalence in commercial buildings in the United States. A multi-year dataset with 36,556 pieces of HVAC equipment including air handling units (AHUs), air terminal units (ATUs), and packaged rooftop units (RTUs) was analyzed to determine values for several HVAC fault prevalence metrics. The primary source of data for this study comes from three commercial fault detection and diagnostics (FDD) providers. Since each FDD provider uses different terms to refer to the same fault in an HVAC system, a mapping function was created for each FDD provider’s dataset, …

The Effects Of The Visual Environment On K-12 Student Achievement, Michael Kuhlenengel, Iason Konstantzos, Clarence E. Waters

Durham School of Architectural Engineering and Construction: Faculty Publications

The varying indoor environments among educational buildings can have an impact on students’ ability to learn. This study looks at field data from 220 classrooms in the Midwest, United States, over a two-year period, to analyze the effects of the visual environment on student achievement. The visual environmental metrics considered within this scope include the three new view metrics introduced within the EN 17037 “Daylight of Buildings” standard (Horizontal Sight Angle, Outside Distance of View, and Number of View Layers), as well as standard daylight and electric lighting metrics, focusing on light availability and glare. To capture student achievement, math …

Simulation For A Mems-Based Ctrnn Ultra-Low Power Implementation Of Human Activity Recognition, Muhammad Emad-Ud-Din, Mohammad H. Hasan, Roozbeh Jafari, Siavash Pourkamali, Fadi M. Alsaleem

Durham School of Architectural Engineering and Construction: Faculty Publications

This paper presents an energy-efficient classification framework that performs human activity recognition (HAR). Typically, HAR classification tasks require a computational platform that includes a processor and memory along with sensors and their interfaces, all of which consume significant power. The presented framework employs microelectromechanical systems (MEMS) based Continuous Time Recurrent Neural Network (CTRNN) to performHAR tasks very efficiently. In a real physical implementation, we show that the MEMS-CTRNN nodes can perform computing while consuming power on a nano-watts scale compared to the micro-watts state-of-the-art hardware. We also confirm that this huge power reduction doesn’t come at the expense of reduced …

Framework To Develop Time- And Voltage-Dependent Building Load Profiles Using Polynomial Load Models, Andrew Parker, Mhd Anas Alkrch, Kevin James, Ahmad Almaghrebi, Mahmoud Alahmad

Durham School of Architectural Engineering and Construction: Faculty Publications

The power consumption of buildings over the course of each minute, hour, day and season plays a major role in how this load influences the Electric Power System voltage and frequency, and vice versa. This consumption is based on the building's load component types, efficiencies, and how they consume power and react to changes in real time. Due to this complexity, standard full-building load models are typically voltage-invariant. This paper proposes a novel framework to transform these voltage-invariant building load models into fully time- and voltage-dependent load profiles using available data on the voltage sensitivity of individual load components. While …

A Case Study To Quantify Variability In Building Load Profiles, Andrew Parker, Sam Moayedi, Kevin James, Dongming Peng, Mahmoud Alahmad

Durham School of Architectural Engineering and Construction: Faculty Publications

Recent technology development and penetration of advanced metering infrastructure (AMI), advanced building control systems, and the internet-of-things (IoT) in the built environment are providing detailed information on building operation, performance, and user's comfort and behavior. Building owners can obtain a wide range of energy consumption details at various levels of time granularity to augment their decisions as they manage the building operation and interact with the grid. AMI data are providing a new level of detail and visibility that may enhance building services and assets in the smart grid domain and make buildings inch closer to becoming a grid-interactive energy …

Review Of Benefits Of Nature Experience For Young Children, Donger Liu, Guy Trainin

Research and Evaluation in Education, Technology, Art, and Design

Progressing urbanization is having an impact on people’s lifestyles. Increasing indoor time results in the deprivation of human’s proximity to nature. Richard Louv (2008) coined the term “nature deficit disorder”, conceptualized the increasing phenomenon of children suffering from anxiety, ADHD, and obesity due to spending less time in nature and more time indoor. There is a growing body of literature focusing on the benefits of nature experience, nature exposure on young children’s physiological and psychological well-beings, such as physical health, attention, executive function, and behavioral regulation etc. This review focuses on the research articles that investigated the influence of nature …

Evaluating Prediction Models Of Creep And Drying Shrinkage Of Self-Consolidating Concrete Containing Supplementary Cementitious Materials/Fillers, Micheal Asaad, George Morcous

Durham School of Architectural Engineering and Construction: Faculty Publications

Supplementary cementitious materials (SCMs) and fillers play an important role in enhancing the mechanical properties and durability of concrete. SCMs and fillers are commonly used in self-consolidating concrete (SCC) mixtures to also enhance their rheological properties. However, these additives could have significant effects on the viscoelastic properties of concrete. Existing models for predicting creep and drying shrinkage of concrete do not consider the effect of SCM/filler on the predicted values. This study evaluates existing creep and drying shrinkage models, including AASHTO LRFD, ACI209, CEB-FIP MC90-99, B3, and GL2000, for SCC mixtures with different SCMs/fillers. Forty SCC mixtures were proportioned for …

Designing Gfrp-Reinforced Tilt-Up Wall Panels, Fray F. Pozo-Lora, Marc Maguire

Durham School of Architectural Engineering and Construction: Faculty Publications

Tilt-up construction was effectively enabled on a wide scale in 1979, when the ACI committee 551 report on Tilt-up construction was published, the Recommended Tilt-Up Wall Design, aka, the Yellow Book and the subsequent ACI-SEASC Task, aka the Green Book, and another Tilt-up design and construction manual developed by the ACI in 1988. The Tilt-up Concrete Association was created in 1986 by a group of industry professionals who had the need of an organization dedicated to the industry. ACI 551 maintains a document outlining the standard practice for contemporary Tilt-up design and construction. The ACI 551 document does not consider …

The Facility Infection Risk Estimator™: A Web Application Tool For Comparing Indoor Risk Mitigation Strategies By Estimating Airborne Transmission Risk, Marcel Harmon, Josephine Lau

Durham School of Architectural Engineering and Construction: Faculty Publications

The COVID-19 pandemic created needs for (a) estimating the existing airborne risk of infection from SARS-CoV-2 in existing facilities and new designs and (b) estimating and comparing the impacts of engineering and behavioural strategies for contextually reducing that risk. This paper presents the development of a web application to meet these needs, the Facility Infection Risk Estimator™, and its underlying Wells–Riley based model. The model specifically estimates (a) the removal efficiencies of various settling, ventilation, filtration and virus inactivation strategies and (b) the associated probability of infection, given the room physical parameters and number of individuals infected present with either …

Performance Evaluation Of A Prestressed Belitic Calcium Sulfoaluminate Cement (Bcsa) Concrete Bridge Girder, Nick Markosian, Raed Tawadrous, Mohammad Mastali, Robert J. Thomas, Marc Maguire

Durham School of Architectural Engineering and Construction: Faculty Publications

Belitic calcium sulfoaluminate (BCSA) cement is a sustainable alternative to Portland cement that offers rapid setting characteristics that could accelerate throughput in precast concrete operations. BCSA cements have lower carbon footprint, embodied energy, and natural resource consumption than Portland cement. However, these benefits are not often utilized in structural members due to lack of specifications and perceived logistical challenges. This paper evaluates the performance of a full-scale precast, prestressed voided deck slab bridge girder made with BCSA cement concrete. The rapid-set properties of BCSA cement allowed the initial concrete compressive strength to reach the required 4300 psi release strength at …

Discrete Rigid Block Analysis To Assess Settlement Induced Damage In Unreinforced Masonry Façades, Ryan Ehresman, Nathan Taylor, Bora Pulatsu, Ece Erdogmus

Durham School of Architectural Engineering and Construction: Faculty Publications

In this study, a system of discontinuous rigid blocks is employed to simulate the possible damage mechanisms in unreinforced masonry (URM) façades and load-bearing frame systems subjected to settlement using the discrete element method (DEM). First, the employed modeling strategy is validated utilizing the available experimental results presented in the literature. Once there is a good agreement between the computational models and experimental findings, a sensitivity analysis is performed to quantify the influence of the input parameters defined in the DEM-based numerical model. Finally, the proposed modeling strategy is further utilized to assess the damage pattern that may develop in …

Modernization Of Scienttific Mathematics Formula In Technology, Iwasan D. Kejawa Ed.D, Prof. Iwasan D. Kejawa Ed.D

Department of Mathematics: Faculty Publications

Abstract
Is it true that we solve problem using techniques in form of formula? Mathematical formulas can be derived through thinking of a problem or situation. Research has shown that we can create formulas by applying theoretical, technical, and applied knowledge. The knowledge derives from brainstorming and actual experience can be represented by formulas. It is intended that this research article is geared by an audience of average knowledge level of solving mathematics and scientific intricacies. This work details an introductory level of simple, at times complex problems in a mathematical epidermis and computability and solvability in a Computer Science. …

A Comparison Between Ultrasonic Guidedwave Leakage And Half-Cell Potential Methods In Detection Of Corrosion In Reinforced Concrete Decks, Ahmad Shoaib Amiri, Ece Erdogmus, Dana Richter-Egger

Durham School of Architectural Engineering and Construction: Faculty Publications

This article presents the advantages and limitations of a recently developed Ultrasonic Guided Wave Leakage (UGWL) method in comparison to the well-known Half-Cell Potential (HCP) method in their ability to detect corrosion in reinforced concrete (RC) bridge decks. This research also establishes a correlation between UGWL data and chloride content in concrete RC slabs. Concrete slabs submerged in a 10% NaCl solution were monitored using both methods over a period of six months. The chloride content from the three cores (0.84, 0.55, and 0.18%) extracted from the slab after the 6-month long process all exceeded the chloride threshold values suggested …

Modding Suburbia - Guided Principles To Challenge The Established Social And Political Norms Of The American Midwestern Suburbs., Brenton Rahn

Masters in Architecture Program: Theses

Responding to the unchallenged sprawl of suburban cities in the Midwest, the proposed principles seek to densify and further diversify the established social and political norms which currently still stagnate progress toward more autonomous neighborhoods. Through application of a specific set of principles that serve as guidelines, Modding Suburbia seeks to create dense, usable space from previously unused and forgotten interstitial areas hiding in the suburban landscape surrounding the socially and politically protected single-family home.

This project focuses on the transformation of the immediate context surrounding the single family home to promote density and diversification of housing and community. Through …

Access To Air: Generating Open Space In The Built Environment, Phillip Smith

Masters in Architecture Program: Theses

This thesis project explores the balance between capturing the benefits of dense, urban design and the desire for residents to experience open space where healthy, active lifestyles are possible. The condition of humanity today struggles with both ecological degradation and social injustices reinforced by systemic segregation. By exploring density in a way that nurtures human dignity, our development patterns can allow us to grow in a more sustainable and equitable way.

Advisor: Mark Hoistad

Aesthetics For The Uncanny In Architecture, Andres F. Villegas

Masters in Architecture Program: Theses

This thesis puts forth an aesthetic model that explores phenomenological effects of the architectural uncanny as a disruptor of an ever-becoming standardized architecture. Along with an increasing population, and the rapid digitazition of architecture, the Building Industry has seen a drastic demand for productivity and efficiency in construction.

This in turn, has led urban spaces to be synthesized into formulas and algorithms as repeating, automated recipes in the urban fabric.

The proposed aesthetic model will re-contextualize concepts of the architectural uncanny in our contemporary societal and urban fabric, as a response to a built environment that seems growingly dictated, arranged …

Materiality And Construction Of A Church In Myanmar, Sunkist Judson

Masters in Architecture Program: Theses

This is my investigation related to Theinla village church. This is an investigation of architectural impacts on a protestant religious house of worship experience through a cultural case study. Churches were built and design based on worship culture and traditions. Churches have evolved for over two thousand years due to innovation and technology and imitating previous architecture styles. The way people worship in the protestant religion is a little different in every culture. I want to find out if there is any overlap in Baptist churches in different cultures. Does material limit the manner in which the church is constructed …

White Noise Dark Ecology: Designing For The Soundscape, William Cox

Masters in Architecture Program: Theses

This thesis explores the intersection of architecture, sound, and ecology. It works through the methodology on how to modulate and produce soundscapes rich with various sound objects. It addresses questions on how designers can use the act of listening to engage with the soundscape. This exploration hopes to continue to find niches which create opportunities for new interactions between architecture and ecology through sound. This is all in a continued effort to engage in positive feedback loops between architecture and non-humans to actively break down the divide between the artificial and natural through sound and architecture by designing for the …

Building Scene: Translations Between Text And Architecture, Joseph Synek

Masters in Architecture Program: Theses

This thesis explores the translation between text and architecture to construct architectural scene. By foregrounding the richness of the scene, these processes engage the kinesthetic, material, emotional, and temporal qualities of architectural space.

Advisor: Zachary Tate Porter

Accessible Health: An Evidenced Based Approach To Improve User Experience And Clinical Sustainability Within Rural Healthcare, John Coughlin

Masters in Architecture Program: Theses

The manner through which health care is provided evolves through advances in medical knowledge as well as improvements in supporting infrastructure and processes. The rate at which this change is made possible is increasingly driven by non-medical factors. These factors include, but are not limited to, the necessity to operate safely in a COVID-19 pandemic while simultaneously operating with economically sustainable processes and infrastructure. This is especially true for underserved populations in rural communities. Acknowledging and understanding these changing environments allows one to better optimize the sometimes competing interests of user experience with sustainable clinical practices. Healthcare is vital to …

Julia Morgan: Forgotten, Omitted, Overlooked, Or Celebrated, Renee Meyer

Masters in Architecture Program: Theses

Julia Morgan (1872-1957) was the first female registered architect in the state of California (1902). Despite her prolific independent practice, recognition for her work came late even for her most known project, Hearst’s Castle in San Simeon, California.

Throughout history, women have been repeatedly left out of the history of architecture and design, often being overshadowed by their male partners. This paper will seek to clarify reasons to decipher why this particular architect was left out of history and the media during her lifetime and will show that her omissions were not solely due to the fact that she was …

Parafiction And The Architectural Imagination, Ashley Glesinger

Masters in Architecture Program: Theses

I observe current architecture practice to be too reality-driven. As a response to this issue, this thesis demonstrates parafiction as one productive method of exercising architectural imagination. I define parafiction as a type of fiction that begins with a fact and is presented as a fact in order to demonstrate what the world could be. To create parafictions, I have used multi-medium techniques of representation. Through the representations, this thesis strives to “make present” one person’s imagination.

I see parafiction and architecture both as projective activities. Specifically, that both redefine relationships to what already exists and create tension between the …

Glitter Urbanism - Lgbtq Narratives In Architecture, William Dendinger

Masters in Architecture Program: Theses

This thesis explores the concept of queer space in architecture to understand its relationship between queer social narratives and their impact on spatial conditions. LGBTQ culture is a complex mix of avant-garde character aesthetics contrasted with hidden, invisible identity traits. By exploring queer figures and spaces through the lens of "camp," we can begin to see sexuality and gender’s impacts on objects and space. I argue that queer space is critical in shaping LGBTQ individuals’ narratives by bringing their struggles, celebrations, and what it is to be queer to the forefront of the urban landscape.

This is approached is by …

Out-Of-Plane Behavior Of Concrete Insulated Wall Panels With 2-Inch, 8-Inch, And 10-Inch Insulation, Jacob Luebke

Durham School of Architectural Engineering and Construction: Dissertations, Thesis, and Student Research

Insulated concrete sandwich wall panels provide structurally and thermally efficient building envelopes and are becoming more popular as energy regulations tighten. To continually adapt to an ever-changing building market and new energy regulations, insulated concrete wall panels are being constructed with thinner wythes, thicker insulation, and relying on partial composite action to decrease material costs and increase thermal and structural efficiency. Numerous methods of the design of partially composite insulated concrete sandwich wall panels have been introduced in recent decades and have been verified by comparing their results to existing experimental testing. Existing testing data for insulated concrete sandwich wall …

Studying Acoustical Characteristics Of Occupied Restaurants, Jared Paine

Durham School of Architectural Engineering and Construction: Dissertations, Thesis, and Student Research

Sound level data and occupancy data have been logged in five restaurants by the research team at the University of Nebraska – Lincoln. Sound levels and occupancy at 10 second intervals were documented over time periods of roughly two hours during active business hours. Noise levels were logged with dosimeters distributed throughout each restaurant, and occupancy was obtained from images recorded by infrared cameras. This work presents data on average sound levels and statistical metrics, such as L10 and L90 values as well as on each restaurant’s Acoustical Capacity and Quality of Verbal Communication, as introduced by Rindel (2012). Acoustical …

Understanding Spaces Of Abandonment Through Virtual Frameworks In Landscape Architecture, Aus Perez

Honors Theses

In recent years, design professionals have implemented many contemporary landscape architecture projects across the United States. With a primary goal of returning nature to urban environments, contemporary landscape architects and other transdisciplinary partners work diligently to sculpt physical spaces that reflect the human-living experience. However, a leap into the world of video game design could allow landscape architects and urban planners to more freely create virtual social environments to address rising issues of abandonment in today’s urban and rural spaces. Video game mechanics and methodologies can be used extensively in the disciplines of design that value participatory processes, like landscape …

Review Of Flexible Learning Spaces In Education, Emily A. Fisher, Donger Liu, Guy Trainin

Research and Evaluation in Education, Technology, Art, and Design

Research has shown that Flexible learning spaces have benefits in educational settings. The space has an impact on teachers' pedagogies and mindsets. In turn, instruction can be more student-centered promoting more interaction and engagement with each other and content. These findings imply that Flexible Learning Spaces can contribute to positive shifts in mindsets for teachers and students, as well as disrupting the dynamics of traditional classroom settings and instruction.

The Integral Of Education Technology In The Society, Prof. Iwasan D. Kejawa Ed.D

School of Computing: Faculty Publications

Abstract

Are there ways people can better utilize technology to suit their needs in the society of ours? It has been inferred that without technology, our lives would be miserable. The societal factors of using technology are an important area of the technical education system in the world. Are we really learning and using technologies to our advantage? Does technology provide the necessary ingredients or proper ways for the education of all in the society? A look into what constitutes the means and how technology education can be improved and be implemented is explored and emphasized in this work. The …