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Articles 541 - 570 of 2298

Full-Text Articles in Architecture

Analysis Of Eccentrically Loaded Frp Partially Wrapped Reinforced Concrete Columns Subjected To Combined Environmental Erosion, Zhiqiang Gu, Congjie Wei, Chenglin Wu, Danying Gao, Peibo You, Dong Wei Apr 2023

Analysis Of Eccentrically Loaded Frp Partially Wrapped Reinforced Concrete Columns Subjected To Combined Environmental Erosion, Zhiqiang Gu, Congjie Wei, Chenglin Wu, Danying Gao, Peibo You, Dong Wei

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Behavior of Eccentrically Loaded Fiber Reinforced Polymer (FRP) Partially Wrapped Reinforced Concrete (RC) Columns under Combined Environmental Erosion Was Investigated in This Paper. Circular RC Columns Were Firstly Subjected to Chloride Erosion Where the Target Corrosion Degree (0, 10 %, and 20 %) is Obtained with Externally Applied Current. This Was Then Followed by Partially Strengthening with 2-Ply of Glass Fiber Reinforced Polymer (GFRP) Strips as Well as 50 Freeze–thaw Cycles. Series of Eccentric Compression Tests Were Conducted with Ranging Eccentricities of 0, 5 Mm, 10 Mm, and 15 Mm. for Comparison, the Carbon Fiber Reinforced Polymer (CFRP) Partially …

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Investigation Of Corrosion Mechanism Of Ribbed Mild Steel Bars Coated With Magnesium Potassium Phosphate Cement Paste, Fan Zhang, John J. Myers, Wenyu Liao, Cun Hui, Hongyan Ma Mar 2023

Investigation Of Corrosion Mechanism Of Ribbed Mild Steel Bars Coated With Magnesium Potassium Phosphate Cement Paste, Fan Zhang, John J. Myers, Wenyu Liao, Cun Hui, Hongyan Ma

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This Study Investigated the Anti-Corrosion Performance of Magnesium Potassium Phosphate Cement (MKPC) Paste Applied to the Surface of Ribbed Mild Steel Bars – Which Was Exposed to Simulated Accelerated Corrosive Environment. Four Electrochemical Approaches Were Used Including Open-Circuit Potential (OCP), Electrochemical Impedance Spectroscope (EIS), Polarization Resistance (PR) and Potentiodynamic Polarization (PDP) over a Period of 5376 H (224 Days). Moreover, Visual Inspection, Optical Microscope, and Scanning Electron Microscopy (SEM) with Energy Dispersive Spectroscopy (EDS) Were Used to Assess the Extent of Corrosion on the Samples. to Understand the Mechanism of Corrosion Protection of the Coating System, X-Ray Photoelectron Spectroscopy (XPS) …

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Biomimicry As An Urban Challenge In Shaping The Future Of Cultural Communities, Nora M. Rehan Mar 2023

Biomimicry As An Urban Challenge In Shaping The Future Of Cultural Communities, Nora M. Rehan

Architecture and Planning Journal (APJ)

The cultural identity of urban communities is the main expression of historical privacy and shapes societies’ past, present, and future. It is an entity of cultural and knowledge accumulation stemming from the community's traditions and customs, which help to consolidate the social fabric and play an important role in the lives of individuals and the planning and development processes. Urban areas with cultural and heritage values are the most important competitive advantages of urban cities that are considered as a primary nucleus for achieving sustainability on a broader scale for the neighboring regions. One of the most important of those …

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Effect Of Green Facade On The Urban Microclimate With Different Street Canyon, Aya Mostafa Hassoun, Mary Felix Mar 2023

Effect Of Green Facade On The Urban Microclimate With Different Street Canyon, Aya Mostafa Hassoun, Mary Felix

Architecture and Planning Journal (APJ)

Using simulation tools, this study investigates the effect of green walls (GWs) on the urban heat island (UHI) phenomenon within different street sizes. It can be planted without taking up more area and could enhance the microclimate environment, which is why it has a wide range of use potential in urban areas. Because Mina City has a threat of UHI, it was chosen for this study. The temperature within various street sizes in the research region was evaluated using only software called ENVI-met that simulates climate, and three common scenarios were chosen. In the first experiment, green walls extending over …

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Analysis And Design Of Lateral Framing Systems For Multi-Story Steel Buildings, Husam Al Dughaishi, Jawad Al Lawati, Moad Alosta, Shaker Mahmood, Mohamed Faisal Al-Kazee, Nur Izzi Md Yusoff, Abdalrhman Milad Mar 2023

Analysis And Design Of Lateral Framing Systems For Multi-Story Steel Buildings, Husam Al Dughaishi, Jawad Al Lawati, Moad Alosta, Shaker Mahmood, Mohamed Faisal Al-Kazee, Nur Izzi Md Yusoff, Abdalrhman Milad

Durham School of Architectural Engineering and Construction: Faculty Publications

This study focused on identifying the most appropriate structural system for multi-story buildings and analyzing its response to lateral loads. The study analyzed and compared the different structural systems to determine the most suitable option. The study aims to utilize three lateral framing systems (moment, braced, and diagrid) in order to investigate which system needs the least amount of steel to meet the design requirements. Thus, in order to determine the estimated steel savings of this system as compared to the moment and braced frames, the four-story and eight-story buildings that are 96' × 96' in the plane and utilize …

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Raveling Performance Of Conventional And Rubberized Chip Seal Under Field And Laboratory Traffic Loading, Alireza Pourhassan, Ahmed A. Gheni, Mohamed Elgawady Mar 2023

Raveling Performance Of Conventional And Rubberized Chip Seal Under Field And Laboratory Traffic Loading, Alireza Pourhassan, Ahmed A. Gheni, Mohamed Elgawady

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Raveling, or the Loss of Surface Aggregate, is a Major Concern in Chip Seal Pavement. Previous Studies Have Used the Standard Sweep, Vialit, and Pennsylvania Tests to Evaluate Raveling, But These Tests Do Not Replicate the Stresses of Rolling Vehicle Tires on Chip Seal and Have Produced Inconsistent Results. Additionally, These Tests Mainly Evaluate Early-Stage Raveling Due to their Short Curing Time. in This Study, a Small-Wheel Traffic Simulation Device (SWTS) Was Used to Apply Similar Stresses as Rolling Vehicle Tires and Produce Comparable Raveling Results. This Was Confirmed through a 13-Month Field Observation of Chip Seal, Where the Laboratory …

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Photolysis Of 3-Nitro-1,2,4-Triazol-5-One: Mechanisms And Products, Hunter W. Schroer, Esteban Londono, Xueshu Li, Hans Joachim Lehmler, William Arnold, Craig L. Just Mar 2023

Photolysis Of 3-Nitro-1,2,4-Triazol-5-One: Mechanisms And Products, Hunter W. Schroer, Esteban Londono, Xueshu Li, Hans Joachim Lehmler, William Arnold, Craig L. Just

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Insensitive munitions formulations that include 3-nitro-1,2,4-triazol-5-one (NTO) are replacing traditional explosive compounds. While these new formulations have superior safety characteristics, the compounds have greater environmental mobility, raising concern over potential contamination and cleanup of training and manufacturing facilities. Here, we examine the mechanisms and products of NTO photolysis in simulated sunlight to further inform NTO degradation in sunlit surface waters. We demonstrate that NTO produces singlet oxygen, and that dissolved oxygen increases the NTO photolysis rate in deionized water. The rate of NTO photolysis is independent of concentration and decreases slightly in the presence of Suwannee River Natural Organic Matter. …

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Hyperspectral Reflectance For Determination Of Steel Rebar Corrosion And Cl− Concentration, Pengfei Ma, Liang Fan, Genda Chen Mar 2023

Hyperspectral Reflectance For Determination Of Steel Rebar Corrosion And Cl− Concentration, Pengfei Ma, Liang Fan, Genda Chen

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In This Study, a New Method is Proposed to Determine Chloride Ion (Cl−) Concentration and Steel Rebar Corrosion from Hyperspectral Spectroscopy. Three Groups of Mortar Cubes with Water-To-Cement (W/c) Ratios of 0.5, 0.6, and 0.7 Were Subjected to Rapid Corrosion Testing in 3.5 Wt% NaCl Solution to Accelerate the Transport of Chloride Ions. Embedded Along the Centerline of Each Mortar Cube Was a Steel Rebar that Corroded When the Cl− Accumulation Around It Exceeded a Critical/threshold Concentration. Open Circuit Potential Was Measured to Characterize the Corrosion Possibility of Steel Rebar. Mortar Surfaces Were Scanned with a Hyperspectral Camera in the …

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Enhancement Of Heat-Cured Cement Paste With Tannic Acid, Jinrui Zhang, Ziye Kang, Youzhi Yang, Biqin Dong, Hongyan Ma Mar 2023

Enhancement Of Heat-Cured Cement Paste With Tannic Acid, Jinrui Zhang, Ziye Kang, Youzhi Yang, Biqin Dong, Hongyan Ma

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Improvement of Cement-Based Materials' Performance by Natural Organic Compounds Can Greatly Promote the Green and Sustainable Development of the Construction Industry. However, Such Compounds Are Not Widely Used Yet Because of their Retarding Effect on Cement. in This Study, the Retardation Effect of Tannic Acid (TA, a Well-Known Retarding Compound) is overcome and the Enhancing Effect is Achieved by Adding Less Than 0.1% Content and Curing Samples in Thermal Regime. Then the Mechanism of TA Enhancing Heat-Cured Cement Pastes is Studied Systematically. Mechanical Properties Results Suggest that Addition of 0.025% TA Can Reduce the Compressive and Flexural Strengths of …

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Precious Plastics - Plastic Brick Machine Fabrication, Timothy Ukaobasi Kanu, Evi Paraskevi Troulis Mar 2023

Precious Plastics - Plastic Brick Machine Fabrication, Timothy Ukaobasi Kanu, Evi Paraskevi Troulis

Architectural Engineering

The goal of this research is to determine the structural parameters of the recycled plastic polypropylene when molded into bricks resembling CMU blocks. To accomplish this, three mechanisms had to be assembled: the shredder, the injector, and the 1x1 mold. A tensile and compression test were to be performed on the plastic brick, and the values would be used to compare the tensile and compressive strength of PP plastic bricks, as well as their modulus of elasticity and stress vs. Strain performance. These values would be analyzed to determine whether it would be feasible to build an entire plastic wall. …

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Construction Of High-Bay Lab Reaction Frame Foundations, David R. Bowen, Henry E. Miller, Blaize Twisselman Mar 2023

Construction Of High-Bay Lab Reaction Frame Foundations, David R. Bowen, Henry E. Miller, Blaize Twisselman

Construction Management

This paper details the construction process of two concrete modular foundations designed to meet specific design standards for various testing methods. The project, positioned within the California Polytechnic State University, San Luis Obispo (Cal Poly) High Bay Lab, will provide the Architectural Engineering (ARCE) and Construction Management (CM) departments with valuable insight into industry structural elements. The project required extensive forethought and thoroughness due to the complex designs, including 200 all-thread coupler attachments and a cumbersome rebar cage. This paper outlines the primary phases of construction, including material procurement and quality control, and discusses how the final product was obtained. …

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Airborne Infection Risks From Covid-19 In Meat Processing Plants And Different Solutions To Mitigate The Risks, Debayan Shom Mar 2023

Airborne Infection Risks From Covid-19 In Meat Processing Plants And Different Solutions To Mitigate The Risks, Debayan Shom

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

Meat processing plants are linked to the rapid spread of COVID-19 cases. A related literature review shows a lack of proper ventilation standards for the meat processing plants for workers’ health and safety. Ventilation rates in these plants are considered adequate if the meat products are unadulterated. Thus, the air distribution and ventilation rate experiments were conducted in three meat processing plants. These measured ventilation rates were either compared to ASHRAE Std. 62.1 (2019) for a similar space or the design values provided by the plant’s administration. The measured values were low in common spaces, such as the cafeteria and …

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Energy Performance Of Double Skin Façade For High-Rise Residential Building In Abu Dhabi, Narmeen Tariq Abu Hilal Mar 2023

Energy Performance Of Double Skin Façade For High-Rise Residential Building In Abu Dhabi, Narmeen Tariq Abu Hilal

Theses

The hot climate of the UAE generates unique challenges for architects and building engineers looking for energy efficiency in high-rise residential buildings. The use of glass building facades has been increased; this type of façade usually comes with a high air-conditioning cost due to the higher heat gain. To design energy-efficient buildings, it is essential to adapt the principles of sustainability and innovative transparent glass façade design into practice as the building facade is a major element in determining the amount of energy used in buildings. Construction details, methods, and materials of the residential building facade play an important role …

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The Cost Of Connectivity - Assessing The Impact Of Superblock Road Design Costs On The Distance, Directness, And Diversity Of Pedestrian Routes, Rim Ibrahim Anabtawi Mar 2023

The Cost Of Connectivity - Assessing The Impact Of Superblock Road Design Costs On The Distance, Directness, And Diversity Of Pedestrian Routes, Rim Ibrahim Anabtawi

Theses

Superblocks have been massively constructed and cover a remarkable amount of Abu Dhabi’s urban landscape. Recent research has shown that Abu Dhabi’s superblocks promote car dependency, which dominates approximately all local transportation, and results in increases in fossil fuel consumption, increase in greenhouse gas emissions, and negative impacts on air quality. This thesis, along with multiple recent studies, addressed this issue, looking at the different designs of internal road networks of residential superblocks in order to better understand their connectivity. The evaluation of different network designs used in the city’s superblocks has provided valuable insights by which to support and …

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Assessing The Perceptions Of School Children With Autism Spectrum Disorder Of Artificial Green Elements In Hot Arid Region, Hala Fouad Albalkhi Mar 2023

Assessing The Perceptions Of School Children With Autism Spectrum Disorder Of Artificial Green Elements In Hot Arid Region, Hala Fouad Albalkhi

Theses

Recently, global statistics demonstrated a continued increase in Autism Spectrum Disorder (ASD) worldwide, especially in Gulf countries, where the United Arab Emirates (UAE) ranks second in terms of autism prevalence. Studies emphasized the positive effects of green elements on the academic performance and skills of school children. The presence of indoor plants can lead to benefits such as stress reduction and positive health and well-being in children with ASD. However, green elements are less utilized in Al Ain schools due to difficulty in maintaining natural plants in buildings. This study aims to examine the perceptions of children with Autism Spectrum …

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Integrating Quality Assurance In Balance Mix Designs For Durable Asphalt Mixtures: State-Of-The-Art Literature Review, Yizhuang David Wang, Jun Liu, Jenny Liu Mar 2023

Integrating Quality Assurance In Balance Mix Designs For Durable Asphalt Mixtures: State-Of-The-Art Literature Review, Yizhuang David Wang, Jun Liu, Jenny Liu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Delivering durable asphalt concrete within a reasonable cost is one of the great ambitions of pavement material engineers. This state-of-the-art review article documents the efforts spent in the past two decades to ensure the durability and performance of asphalt mixtures in mix design and production. A perspective with the attempt to integrate laboratory mix design, plant production quality assurance, and field place acceptance is applied in the review. The development of the performance specification and performance mix design is summarized. The paper categorizes performance specification into index-based performance specification and predictive performance specification that include performance-related specification and performance-based specification. …

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Wind Effects On Dome Structures And Evaluation Of Cfd Simulations Through Wind Tunnel Testing, Tiantian Li, Hongya Qu, Yi Zhao, Ryan Honerkamp, Guirong Grace Yan, Arindam Chowdhury, Ioannis Zisis Mar 2023

Wind Effects On Dome Structures And Evaluation Of Cfd Simulations Through Wind Tunnel Testing, Tiantian Li, Hongya Qu, Yi Zhao, Ryan Honerkamp, Guirong Grace Yan, Arindam Chowdhury, Ioannis Zisis

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In the Study, a Series of Wind Tunnel Tests Were Conducted to Investigate Wind Effects Acting on Dome Structures (1/60 Scale) Induced by Straight-Line Winds at a Reynolds Number in the Order of 106. Computational Fluid Dynamics (CFD) Simulations Were Performed as Well, Including a Large Eddy Simulation (LES) and Reynolds-Averaged Navier–Stokes (RANS) Simulation, and their Performances Were Validated by a Comparison with the Wind Tunnel Testing Data. It is Concluded that Wind Loads Generally Increase with Upstream Wind Velocities, and They Are Reduced over Suburban Terrain Due to Ground Friction. the Maximum Positive Pressure Normally Occurs Near the Base …

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Synergistic Effect Of Hedp.4na And Different Induced Pouring Angles On Mechanical Properties Of Fiber-Reinforced Alkali-Activated Slag Composites, Jingjie Wei, Jianwei Liu, Kamal Khayat, Wu Jian Long Mar 2023

Synergistic Effect Of Hedp.4na And Different Induced Pouring Angles On Mechanical Properties Of Fiber-Reinforced Alkali-Activated Slag Composites, Jingjie Wei, Jianwei Liu, Kamal Khayat, Wu Jian Long

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Poor Flexural and Damping Properties of Building Materials Damages Concrete Structures and Affects their Service Life When Concrete Structures Are Subjected to Dynamic Loads. Three Different Dosages (I.e., 0%, 0.3%, and 0.6%) of Organic Phosphonates (HEDP.4Na) and Different Pouring Methods (I.e., Conventional Pouring Method, 90°-Induced Pouring Method, and 150°-Induced Pouring Method) Were Designed to Improve the Flexural and Damping Performance of Fiber-Reinforced Alkali-Activated Slag Composites (FR-AASC). the Enhanced Mechanism of HEDP.4Na Was Revealed by Phase Analysis (X-Ray Diffraction, XRD), Pore Structure Analysis (Mercury Intrusion Porosimetry, MIP), the Heat of Hydration, and Scanning Electron Microscopy (SEM) Analysis. the Results Showed …

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On The Balcony, Beyond “Balconearing”; Perception Of Cairene Women, Behind The Curtains., Rowida Magdy Al-Gebeily Feb 2023

On The Balcony, Beyond “Balconearing”; Perception Of Cairene Women, Behind The Curtains., Rowida Magdy Al-Gebeily

Theses and Dissertations

This study sheds light on the significance and role of threshold spaces as means of accomplishing sociocultural needs, restoration and wellbeing in the residential environment. Understanding the function and uses of these spaces allows us to appreciate their benefits that are often neglected. The research particularly focuses on the social dimension of one fundamental threshold space; the Cairene balcony. It is an integral space that provides a valuable connection to the outside, and its importance in the development of urban living is widely recognized. If carefully designed to meet the residents’ needs and demands, they can promote a better quality …

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Rheological Characterization Of Ultra-High Performance Concrete For 3d Printing, Arun R. Arunothayan, Behzad Nematollahi, Kamal Khayat, Akilesh Ramesh, Jay G. Sanjayan Feb 2023

Rheological Characterization Of Ultra-High Performance Concrete For 3d Printing, Arun R. Arunothayan, Behzad Nematollahi, Kamal Khayat, Akilesh Ramesh, Jay G. Sanjayan

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The authors recently developed a 3D-printable ultra-high performance fiber-reinforced concrete (3DP-UHPFRC) for additive construction of structural members with significantly reduced reliance on steel bars. This study investigates the rheological behavior of the developed 3DP-UHPFRC. The effects of two major factors affecting the performance of 3DP-UHPFRC, namely steel fiber volume (0, 1%, and 2%) and nano-clay (NC) content (0, 0.1%, and 0.2% by binder mass) on workability, static yield stress, dynamic yield stress, and apparent viscosity were determined. Test results showed that the inclusion of steel fibers and NC reduced the workability and led to a significant increase in the static …

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Homogeneous Flow Performance Of Steel-Fiber Reinforced Self-Consolidating Concrete For Repair Application: A Biphasic Approach, Naimeh Nouri, Masoud Hosseinpoor, Ammar Yahia, Kamal Khayat Feb 2023

Homogeneous Flow Performance Of Steel-Fiber Reinforced Self-Consolidating Concrete For Repair Application: A Biphasic Approach, Naimeh Nouri, Masoud Hosseinpoor, Ammar Yahia, Kamal Khayat

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In this study, fiber-reinforced self-consolidating concrete (FR-SCC) was considered as a diphasic suspension of fiber and coarse aggregate (F-A ≥ 5 mm) skeleton in mortar suspension with solid particles finer than 5 mm. The coupled effect of the volumetric content of fibers, coarse aggregate particle-size distribution, and rheological properties of the mortar on the passing ability and dynamic stability of various FR-SCC mixtures was investigated. Nine high-strength and 10 conventional-strength FR-SCC mixtures for repair application were proportioned with water-to-binder ratios (W/B) of 0.35 and 0.42, respectively, and macro steel fibers of 0.1%–0.5% volumetric contents. The dosages of high-range water-reducer (HRWR) …

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Effect Of Additional Water Or Superplasticizer On Key Characteristics Of Cement Paste Made With Superabsorbent Polymer And Other Shrinkage Mitigating Materials, Kamran Aghaee, Ricarda Sposito, Karl Christian Thienel, Kamal Khayat Feb 2023

Effect Of Additional Water Or Superplasticizer On Key Characteristics Of Cement Paste Made With Superabsorbent Polymer And Other Shrinkage Mitigating Materials, Kamran Aghaee, Ricarda Sposito, Karl Christian Thienel, Kamal Khayat

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The use of superabsorbent polymer (SAP) coupled with expansive agent (EA) or shrinkage-reducing admixture (SRA) can effectively reduce shrinkage of cement-based materials. However, SAP particles at high contents can adversely affect rheological and mechanical properties. Securing proper workability can be accomplished by additional water or adjusting the superplasticizer (SP) demand. There is an uncertainty about the efficiency of these approaches to workability compensation. This study evaluates the effect of additional water or SP on key properties of cement paste made with SAP and relatively high content of EA or SRA. Macro and micro mechanisms underlying the effect of combined shrinkage …

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Effect Of Class C And Class F Fly Ash On Early-Age And Mature-Age Properties Of Calcium Sulfoaluminate Cement Paste, Sukanta K. Mondal, Carrie Clinton, Hongyan Ma, Aditya Kumar, Monday Uchenna Okoronkwo Feb 2023

Effect Of Class C And Class F Fly Ash On Early-Age And Mature-Age Properties Of Calcium Sulfoaluminate Cement Paste, Sukanta K. Mondal, Carrie Clinton, Hongyan Ma, Aditya Kumar, Monday Uchenna Okoronkwo

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

To Promote the Sustainable Development of Eco-Efficient Calcium Sulfoaluminate (CSA) Cements through the Partial Replacement of the CSA Clinker with Supplementary Cementitious Waste Products, the Effects of Coal Fly Ashes on the Early-Age and Mature-Age Properties of a Calcium Sulfoaluminate (CSA)-Based Cement Paste Were Investigated. the Impacts of Both Class C and Class F Fly Ashes on the Rheological Properties, Hydration Kinetics, and Compressive Strength Development of CSA Cement Paste Were Studied. Rheology-Based Workability Parameters, Representing the Rate of Loss of Flowability, the Rate of Hardening, and the Placement Limit, Were Characterized for the Pastes Prepared with Fixed Water-To-Cement (W/c) …

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A Framework To Predict Variability Characteristics In Building Load Profiles, Sam Moayedi, Andrew Parker, Kevin James, Xiaoyue Cheng, Michael Hempel, Hamid Sharif, Mahmoud A. Alahmad Jan 2023

A Framework To Predict Variability Characteristics In Building Load Profiles, Sam Moayedi, Andrew Parker, Kevin James, Xiaoyue Cheng, Michael Hempel, Hamid Sharif, Mahmoud A. Alahmad

Durham School of Architectural Engineering and Construction: Faculty Publications

The expansion of Advanced Metering Infrastructure (AMI) has provided building operators and researchers detailed information on building energy consumption. The majority of AMI systems, however, record data at relatively low resolutions of 15, 30, or 60 minutes, due to cost, storage and bandwidth limitations. Emerging applications in power flow analysis, Quasi-Static Time-Series Simulation (QSTS), smart grid integration and load matching, however, require data at higher resolutions. Short-term energy demand can deviate significantly from long-term averages, with an unknown magnitude and frequency when only low-resolution load profile data is available. This paper presents a novel data-driven approach to predict characteristics of …

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Integration Of Real-Time Semantic Building Map Updating With Adaptive Monte Carlo Localization (Amcl) For Robust Indoor Mobile Robot Localization, Matthew Peavy, Pileun Kim, Hafiz Oyediran, Kyungki Kim Jan 2023

Integration Of Real-Time Semantic Building Map Updating With Adaptive Monte Carlo Localization (Amcl) For Robust Indoor Mobile Robot Localization, Matthew Peavy, Pileun Kim, Hafiz Oyediran, Kyungki Kim

Durham School of Architectural Engineering and Construction: Faculty Publications

A robot can accurately localize itself and navigate in an indoor environment based on information about the operating environment, often called a world or a map. While typical maps describe structural layouts of buildings, the accuracy of localization is significantly affected by nonstructural building elements and common items, such as doors, appliances, and furniture. This study enhances the robustness and accuracy of indoor robot localization by dynamically updating the semantic building map with non-structural elements detected by sensors. We propose modified Adaptive Monte Carlo Localization (AMCL), integrating object recognition and map updating into the traditional probabilistic localization. With the proposed …

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Marshall, Il Brownfield/Superfund Site Project, Nathan Myers Jan 2023

Marshall, Il Brownfield/Superfund Site Project, Nathan Myers

2022 Fall Reports (Marshall, IL)

This course will examine modern public policymaking in the United States. We will examine the different forms that policy can take and how each branch of government can leave a lasting impact on policy. The course will investigate the environment in which policy in the U.S. is shaped and the key official and unofficial actors involved. The course will investigate how public policy issues are defined and earn a place on the policy agenda. The remainder of the course will focus on various criteria for evaluating policy: effectiveness, efficiency, equity, liberty, security, and resilience. The manner in which policy often …

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Marshall Residential Development, Kimberly Smith Jan 2023

Marshall Residential Development, Kimberly Smith

2022 Fall Reports (Marshall, IL)

Introduction and development of the design process through the exploration of abstract and realistic problem-solving applications. Design solutions are presented through the development of two- and three-dimensional presentation techniques.

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Marshall, Il Housing Affordability Project, Nathan Myers Jan 2023

Marshall, Il Housing Affordability Project, Nathan Myers

2022 Fall Reports (Marshall, IL)

This class is designed to provide a basic working understanding of statistical methods which are commonly used in the social sciences, including public administration. Students will learn the mathematical logic behind the procedures by calculating statistical formulas. Students will also gain proficiency in completing statistical procedures using Microsoft Excel (the Statistical Package for the Social Sciences, or SPSS, may also be used).

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Integrating Life-Cycle Analysis Into Civil Infrastructure Resilience Decision Making: Illustrative Application To Seismic Resilience Modeling Of Us Communities, Milad Roohi, Jiate Li, W. Van De Lindt Jan 2023

Integrating Life-Cycle Analysis Into Civil Infrastructure Resilience Decision Making: Illustrative Application To Seismic Resilience Modeling Of Us Communities, Milad Roohi, Jiate Li, W. Van De Lindt

Durham School of Architectural Engineering and Construction: Faculty Publications

This paper aims to integrate life-cycle analysis into civil infrastructure resilience modeling and decision-making in seismic-prone communities. To achieve this aim, the authors present a methodology for modeling seismic life-cycle resilience of interdependent buildings and lifeline systems and subsequently informing resilience decisions directly related to the maintenance and retrofit of interdependent infrastructure to enhance a community’s physical, social, and economic systems. The methodology consists of 1) community data collection, 2) seismic hazard analysis, 3) physical damage analysis, and 4) system-level functionality and restoration analysis, 5) socio-economic impact analysis, 6) life-cycle optimization and retrofit decisionmaking. The methodology begins by developing geospatial …

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Dissipated Hysteretic Energy Reconstruction For High-Resolution Seismic Monitoring Of Instrumented Buildings, Milad Roochi, Eric M. Hernández, David V. Rosowsky Jan 2023

Dissipated Hysteretic Energy Reconstruction For High-Resolution Seismic Monitoring Of Instrumented Buildings, Milad Roochi, Eric M. Hernández, David V. Rosowsky

Durham School of Architectural Engineering and Construction: Faculty Publications

This paper proposes a high-resolution seismic monitoring framework that employs dissipated energy as a feature for damage detection and localization in instrumented building structures. The the methodology consists of (1) implementing a nonlinear state observer to reconstruct the dynamic response at all degrees of freedom (DoF) of a structural model, (2) employing the reconstructed response to estimate element-by-element forces and displacements, and (3) using estimated displacement, forces, and constitutive laws to estimate elementlevel dissipated energy. The main advantages of the proposed energy-based approach are that i) the proposed feature is physically meaningful and correlates well with the level of cyclic …

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