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Articles 31 - 60 of 164
Full-Text Articles in Engineering
Evaluating Stem Course Re-Design Strategies In Light Of Covid-19, Ulises Juan Trujillo Garcia, Krishna Pakala, Samantha Schauer, Diana Bairaktarova, Bhaskar Chittoori
Evaluating Stem Course Re-Design Strategies In Light Of Covid-19, Ulises Juan Trujillo Garcia, Krishna Pakala, Samantha Schauer, Diana Bairaktarova, Bhaskar Chittoori
Mechanical and Biomedical Engineering Faculty Publications and Presentations
The COVID-19 pandemic brought on unprecedented challenges to the teaching and learning communities that required faculty to make purposeful changes in their teaching approaches. Many faculty members had to shift rapidly from in-person to online mode of instruction. This study documents perceptions of STEM faculty who made the change to online teaching. It reports on what strategies faculty used to transition to remote/online teaching and how this change impacted student learning. The study results indicated that almost two-thirds of the faculty changed how they evaluated their students. Results also showed that the sudden change to remote learning negatively impacted student …
The Environmental Benefits Of Implementing Green Roofs On City Skyscrapers, Jack Rich
The Environmental Benefits Of Implementing Green Roofs On City Skyscrapers, Jack Rich
Civil Engineering Student Work
No abstract provided.
Response Modification And Seismic Protection Of Yielding Structures Equipped With Inerters And Hysteretic Dampers, Gholamreza Moghimi
Response Modification And Seismic Protection Of Yielding Structures Equipped With Inerters And Hysteretic Dampers, Gholamreza Moghimi
Civil and Environmental Engineering Theses and Dissertations
This study investigates the seismic response of structures with sustainable, long-stroke response modification devices. The main thrust of the dissertation is the investigation of the seismic response of yielding structures equipped with supplemental rotational inertia, or inerters. The last chapter of this dissertation investigates the seismic response of multistory yielding steel structures equipped with pressurized sand dampers.
Inerters are mechanical devices with resisting force proportional to the relative acceleration of their end nodes. This class of response modification devices complements the traditional fluid viscous damping devices with resisting force proportional to the relative velocity at their end-nodes. Mass-amplification is the …
Context-Aware Sensing And Fusion For Structural Health Monitoring And Night Time Traffic Surveillance, Xinxiang Zhang
Context-Aware Sensing And Fusion For Structural Health Monitoring And Night Time Traffic Surveillance, Xinxiang Zhang
Electrical Engineering Theses and Dissertations
Rapid developments in computer vision technologies have been transforming many traditional fields in engineering and science in the last few decades, especially in terms of diagnosing problems from visual images. Leveraging computer vision technologies to inspect, monitor, assess infrastructure conditions, and analyze traffic dynamics, has gained significant increase in both effectiveness and efficiency, compared to the cost of traditional instrumentation arrays to monitor, and manually inspect civil infrastructures and traffic conditions. Therefore, to construct the next-generation intelligent civil and transportation infrastructures, this dissertation develops a comprehensive computer-vision based sensing and fusion framework for structural health monitoring and intelligent transportation systems. …
Characterization Of An Urban Watershed: The Case For Rowlett Creek Watershed Impaired By Bacteria And Nutrient Concerns, Heather Firn
Characterization Of An Urban Watershed: The Case For Rowlett Creek Watershed Impaired By Bacteria And Nutrient Concerns, Heather Firn
Civil and Environmental Engineering Theses and Dissertations
Firn, Heather B.S., Southern Connecticut State University, 2009 M.S., Southern Connecticut State University, 2013
Characterization of an Urban Watershed: The Case
for Rowlett Creek Watershed Impaired by Bacteria
and Nutrient Concerns
Advisor: Professor Wenjie Sun
Master of Science conferred May, 15, 2021
Thesis completed April, 27, 2021
Water quality and its relationship with urbanization is one of many nationwide environmental concerns. Rowlett Creek is located in an urban watershed in the Dallas-Fort Worth Metroplex. Since 2014, it has been listed by the Texas Commission on Environmental Quality as impaired for bacteria and as a screening limit concern for nitrate. Water …
Post Covid-19 Water And Waste Water Management To Protect Public Health And Geoenvironment, Ken Cornell, Arvin Farid
Post Covid-19 Water And Waste Water Management To Protect Public Health And Geoenvironment, Ken Cornell, Arvin Farid
Chemistry and Biochemistry Faculty Publications and Presentations
The coronavirus disease 2019 pandemic has posed severe threats to humans and the geoenvironment. The findings of severe acute respiratory syndrome coronavirus 2 (Sars-CoV-2) traces in waste water and the practice of disinfecting outdoor spaces in several cities in the world, which can result into the entry of disinfectants and their by-products into storm drainage systems and their subsequent discharge into rivers and coastal waters, raise the issue of environmental, ecological and public health effects. The aims of the current paper are to investigate the potential of water and waste water to operate as transmission routes for Sars-CoV-2 and the …
Bibliometric Analysis And Research Trends Of A Journal: Magazine Of Civil Engineering, Daniel Aristizabal, Angy Juliet Lara, Valentina Payares, Alejandro Alzate
Bibliometric Analysis And Research Trends Of A Journal: Magazine Of Civil Engineering, Daniel Aristizabal, Angy Juliet Lara, Valentina Payares, Alejandro Alzate
Library Philosophy and Practice (e-journal)
Magazine of Civil Engineering (MCE) is an open access scientific journal in the field of civil engineering and construction. Motivated by its more than a thousand articles published since 2008, this study aims to develop a bibliometric analysis based on the historical consolidation of publications and subject areas to identify research trends, authors, countries, and institutions with more publications. For this purpose, the Scopus database and the journal's homepage were consulted to identify the number of published issues and articles and other bibliometric indicators of interest, using open-source tools such as Bibliometrix and VOSviewer. The mapping of the scientific production …
Damage Evolution And High-Rate Response Of High-Strength Concrete Under Triaxial Loading, Brett Williams
Damage Evolution And High-Rate Response Of High-Strength Concrete Under Triaxial Loading, Brett Williams
Mechanical Engineering Research Theses and Dissertations
The research presented in this study focuses on understanding fundamental mechanisms that drive material response under dynamic loading conditions. The objectives of the research were to: (1) to understand damage initiation and propagation in the bulk geomaterial under a variety of loading conditions and (2) to systematically investigate the strain rate effects on the triaxial compressive response of cementitious materials through the development of an innovative, first of its kind large-diameter (50 mm) triaxial Kolsky bar system.
The triaxial compressive response of high-strength concrete is needed to understand pressure-dependent material behavior, which is important for modeling extreme loading events. However, …
Characterization Of Uranium, Lead, And Rare Earth Element Pollution In Natural Soils And Sediments, Hope Rasmussen
Characterization Of Uranium, Lead, And Rare Earth Element Pollution In Natural Soils And Sediments, Hope Rasmussen
Civil and Environmental Engineering Theses and Dissertations
Heavy metals in the environment add to the global burden of pollution, negatively impacting public health and ecosystem resilience. This study included projects regarding uranium (U), lead (Pb), and rare earth elements (REE) in natural samples, due to their known toxicity, ubiquity, and relevance in context to recent pollution trends. The first project focused on testing the potential of using a hydroxyapatite product as a remediation solution for U-contaminated groundwater and soil at an EPA Superfund site. The results showed that the U was sequestered in a highly crystalline mineral form within the solids, guiding the EPA to specify the …
Potable Water For A Volcanic Community In Rural Guatemala, Marieli Rubio, Jichan Seo, Connor Thomas
Potable Water For A Volcanic Community In Rural Guatemala, Marieli Rubio, Jichan Seo, Connor Thomas
Civil, Environmental and Sustainable Engineering Senior Theses
The project, in partnership with Santa Clara University Frugal Innovation Hub and Instituto de Investigacion y Proyeccion sobre Ciencia y Tecnologia (INCYT) at Universidad Rafael Landivar, aimed to provide Panimache II, a small volcanic Guatemalan community, with access to clean and affordable water. The team designed a water treatment plant and distribution system, consisting of a hydraulic flocculator, sedimentation basin, slow-sand filter, and chlorination chamber, to remove the high levels of ash and other suspended solids. Components of the project included analyzing water source and quality, availability of construction materials, and recommended construction to effectively design and implement the community's …
Ce 200a-002: Surveying Lab, Allison Lapatka
Ce 200a-002: Surveying Lab, Allison Lapatka
Civil and Environmental Engineering Syllabi
No abstract provided.
A Comparison Of The Effectiveness And Integration Capability Of Personal Aerial Vehicles (Pav) Into The Existing Transportation Network Of The City Of Los Angeles, Alec Perkins
Williams Honors College, Honors Research Projects
Traffic demands on the current infrastructure network is becoming more strained as populations migrate and increase, particularly in large cities. Therefore, city officials, transportation and traffic authorities and researchers, and city inhabitants themselves are always striving to find faster and more efficient means of transportation. With the rise of new technologies such as autonomous vehicles and drones, the applications for transportation are endless. Therefore, this paper will describe and explore the operations, and consequently the efficacy, of Personal Aerial Vehicles (PAV), also known as Urban Air Mobility (UAM). The machines, while still hypothetical, are being researched extensively by some of …
Residential Dwelling Design And Construction Planning, Jodi Beery
Residential Dwelling Design And Construction Planning, Jodi Beery
Williams Honors College, Honors Research Projects
This report presents a step-by-step guide in building a hypothetical residential dwelling in Wayne County, Ohio. The project begins with the initial site investigation phase, which gathers general information about the physical site of proposed construction as well as the requirements of the governing body of the area; applications for permits and inspections for example. Next, phase is the site design which includes creating plans for the building footprint, pavement areas, and utility locations. The next phase in the design will be the building plans which will include floor plans and associated material lists for the construction of the home. …
Side Impact Collisions: Trucks Versus Sedans, Mackenzie Cheyney
Side Impact Collisions: Trucks Versus Sedans, Mackenzie Cheyney
Williams Honors College, Honors Research Projects
The proposed project will cover the effects of FMVSS 214 addendum to include light trucks. The addition of side door beams, air bags, and a dynamic performance requirement are the main points of FMVSS 214 which will be discussed. The effects of these safety measures will be compared between light trucks and sedans. NHTSA reports regarding the effects of FMVSS 214 will be reviewed in this paper. Based on the NHTSA literature reviews, further recommendations will be made.
Optimizing The Methanotrophic Production Of Polyhydroxyalkanoates Using Mixed Microbial Bacteria Cultures, Kai Cheng
Civil and Environmental Engineering Theses and Dissertations
The use of petroleum-based plastics has caused serious economic and environmental problems. It is imperative to develop sustainable ways to produce valuable and environmentally-friendly materials. Methanotrophic bacteria are known for assimilating methane while generating polyhydroxybutyrate (PHB) biopolymers, which are potential substitutes for conventional plastics. Additionally, biologically generated methane and volatile fatty acids (VFAs) are abundant and readily accessible through anaerobic digestion of organic wastes. Thus, optimizing the methanotrophic production will bring significant economic and environmental benefits.
In section one, a feast-famine based cultivation system was adopted to produce PHAs using Hyphomicrobium, and Methylocysits dominated bacterial culture. The mixed bacterial culture …
Space And Depth-Resolved Naturally Occurring Toxic Groundwater Species In Bangladesh And Rwanda: Origination And Risk Analysis, Kenneth Hamilton
Space And Depth-Resolved Naturally Occurring Toxic Groundwater Species In Bangladesh And Rwanda: Origination And Risk Analysis, Kenneth Hamilton
Civil and Environmental Engineering Theses and Dissertations
Access to safe potable water is a necessity for all. Groundwater is a commonly relied upon drinking water source for many areas around the world. This is especially true for communities in high density, rural settings. Such is the case for populations near Cox’s Bazaar, Bangladesh, and in the Bugesera region of Rwanda. Sediment and groundwater contamination, through toxic dissolved species, represents a significant public health risk to exposed populations. Tropical soils, such as the soil profiles in Bangladesh and Rwanda, often contain higher concentrations of heavy metals (Rieuwerts, 2007). Additionally, nitrate from fertilizers, are widely used on the soils …
Faith Promise Lane: From Cherahala Boulevard To Tn-162 Mp 1.9, Zachary W. Jerome
Faith Promise Lane: From Cherahala Boulevard To Tn-162 Mp 1.9, Zachary W. Jerome
Chancellor’s Honors Program Projects
No abstract provided.
Design Of A Greywater-Fed Hydroponics System, Alex Estrada, Katya Fairchok, Andrew Feldmeth, Andrew Jezak
Design Of A Greywater-Fed Hydroponics System, Alex Estrada, Katya Fairchok, Andrew Feldmeth, Andrew Jezak
Interdisciplinary Design Senior Theses
To combat issues of local water insecurity, a hydroponics system was designed in partnership with LEAP 5 High School in Jane Furse, South Africa. Climate change, increasing human population, and continued environmental degradation all threaten access to clean drinking water. Approximately seventy percent of all freshwater is used for agriculture globally, thus threatening food security especially in developing countries where access to water is potentially volatile. The hydroponics garden system utilizes sustainable materials, a self-monitoring temperature controls system, and greywater input, to act as an educational tool for students and significantly reduce freshwater use compared to traditional, in-ground agriculture. An …
Hester Gardens - A Lifemoves Temporary Interim-Housing Facility, Jeffrey Meier, Megan Sauter, Jenna Tran, Taylor Klauser
Hester Gardens - A Lifemoves Temporary Interim-Housing Facility, Jeffrey Meier, Megan Sauter, Jenna Tran, Taylor Klauser
Civil, Environmental and Sustainable Engineering Senior Theses
LifeMoves, an organization that provides interim housing and supportive services to families and individuals experiencing homelessness, recently purchased 0.35 acres of land, located at 1759 Hester Avenue, San Jose, CA 95128. LifeMoves has challenged the design team to provide preliminary building layouts, a structural alternative analysis, construction management plans, and general civil plans for a multi-story, family-friendly, interim housing facility, which has been named Hester Gardens. The design team considered both steel, a traditional building material, and shipping containers, a sustainable alternative building material, for this project. Each alternative included a structural design and analysis, as well as a cost …
Hybrid Vehicle-Drone Routing Problem For Pick-Up And Delivery Services Mathematical Formulation And Solution Methodology, Aline Karak
Civil and Environmental Engineering Theses and Dissertations
The fast growth of online retail and associated increasing demand for same-day delivery have pushed online retail and delivery companies to develop new paradigms to provide faster, cheaper, and greener delivery services. Considering drones’ recent technological advancements over the past decade, they are increasingly ready to replace conventional truck-based delivery services, especially for the last mile of the trip. Drones have significantly improved in terms of their travel ranges, load-carrying capacity, positioning accuracy, durability, and battery charging rates. Substituting delivery vehicles with drones could result in $50M of annual cost savings for major U.S. service providers.
The first objective of …
Mech 236-002: Engineering Mechanics: Dynamics, Rajib Moral
Mech 236-002: Engineering Mechanics: Dynamics, Rajib Moral
Civil and Environmental Engineering Syllabi
No abstract provided.
Ce 432-102: Structural Steel Design, Raj Navalurkar
Ce 432-102: Structural Steel Design, Raj Navalurkar
Civil and Environmental Engineering Syllabi
No abstract provided.
Mech 236-004: Engineering Mechanics: Dynamics, Rajib Moral
Mech 236-004: Engineering Mechanics: Dynamics, Rajib Moral
Civil and Environmental Engineering Syllabi
No abstract provided.
Processing And Properties Of Multifunctional Two Dimensional Nanocomposites Based On Graphene Nano-Flakes, Mohammed K. Mohammed
Processing And Properties Of Multifunctional Two Dimensional Nanocomposites Based On Graphene Nano-Flakes, Mohammed K. Mohammed
Browse all Theses and Dissertations
The unique properties of graphene have directed researchers to study and characterize this new material. Graphene production and graphene based materials have been widely explored and developed in the past decade. Most research has aimed at developing scalable, environmentally friendly, and cheap procedures to produce defect-free graphene that can be used in various applications such as mechanical properties enhancement and multifunctional material. The challenge is processing such material on a scale suitable for engineering applications such as advanced photonics and advanced electronics. In this study, we investigate a new processing technique based on Langmuir-Blodgett (LB) Technique. We managed to produce …
3d Printing Reinforced Concrete Structures, Bryce Tyler Tafolla
3d Printing Reinforced Concrete Structures, Bryce Tyler Tafolla
Masters Theses
"This study aims to investigate a 3D printing method to directly incorporate continuous reinforcement into concrete structures. The ability to design and produce complex structures with optimized topographical configuration can be used to reduce potential material waste while maintaining the required structural strength. Furthermore, the ability to actively incorporate reinforcement into printed members substantially reduces potential labor requirements and eliminates the need to set up formwork.
The study began its initial approach with a manual extrusion process containing reinforcement to observe the necessary constraints required to achieve a printing system with this functionality. The second stage of development was designing …
Removel Of Polluntants From Aqueous Solution Via Graphene Oxide/Magnesium Oxide Nanocomposites, Mahdi Heidarizad
Removel Of Polluntants From Aqueous Solution Via Graphene Oxide/Magnesium Oxide Nanocomposites, Mahdi Heidarizad
Civil and Environmental Engineering Theses and Dissertations
In this study, a series of graphene oxide/magnesium oxide nanocomposites (GO/MgO NCs) were synthesized and applied for the removal of Methylene Blue (MB) from aqueous solutions. The prepared NCs were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and thermogravimetric analysis. The results showed that MgO particles were successfully layered on GO. The impacts of different experimental variables on the removal of MB including GO/MgO NCs dosage, pH, contact time, and initial MB concentration were investigated.
Thereafter, we investigate the mechanism and kinetics of ozonation processes in the presence of GO/MgO NCs as a catalyst …
Evaluation Of The Mechanisms And Effectiveness Of Nano-Hydroxides, Wood And Dairy Manure-Derived Biochars To Remove Fluoride And Heavy Metals From Water, Anna Rose Wallace, Wenjie Sun Dr, Chunming Su Dr
Evaluation Of The Mechanisms And Effectiveness Of Nano-Hydroxides, Wood And Dairy Manure-Derived Biochars To Remove Fluoride And Heavy Metals From Water, Anna Rose Wallace, Wenjie Sun Dr, Chunming Su Dr
Civil and Environmental Engineering Theses and Dissertations
The development of effective treatment processes for the removal contaminants, such as fluoride and heavy metals, from polluted water have been urgently needed due to serious environmental health and safety concerns. In this dissertation, a variety of materials including various (hydro)oxide nanomaterials, biochars and surface modified biochar were studied to evaluate their effectiveness and mechanism on removing fluoride or mixed heavy metals from water.
In the Chapter 2, this study investigated the adsorptive removal of fluoride from water using various (hydro)oxide nanomaterials, focusing on ferrihydrite, hydroxyapatite (HAP) and brucite, which have the potential to be used as sorbents for surface …
Generalized Relay Network Design And Collaborative Dispatching In Truckload Transportation, Amin Ziaeifar
Generalized Relay Network Design And Collaborative Dispatching In Truckload Transportation, Amin Ziaeifar
Operations Research and Engineering Management Theses and Dissertations
The truckload industry faces a serious problem of high driver shortage and turnover rate which is typically around 100\%. Among the major causes of this problem are extended on-the-road times where drivers handle several truckload pickup and deliveries successively; non-regular schedules and get-home rates; and low utilization of drivers dedicated time. These are by-and-large consequences of the driver-to-load dispatching method, which is based on point-to-point dispatching or direct shipment from origin-to-destination, commonly employed in the industry. In this dissertation, we consider an alternative dispatching method that necessitates careful design of an underlying network. In this scheme, a truckload on its …
Elementary School Student Development Of Stem Attitudes And Perceived Learning In A Stem Integrated Robotics Curriculum, Yu-Hui Ching, Dazhi Yang, Sasha Wang, Youngkyun Baek, Steve Swanson, Bhaskar Chittoori
Elementary School Student Development Of Stem Attitudes And Perceived Learning In A Stem Integrated Robotics Curriculum, Yu-Hui Ching, Dazhi Yang, Sasha Wang, Youngkyun Baek, Steve Swanson, Bhaskar Chittoori
Educational Technology Faculty Publications and Presentations
Robotics has been advocated as an emerging approach to engaging K-12 students in learning science, technology, engineering, and mathematics (STEM). This study examined the impacts of a project-based STEM integrated robotics curriculum on elementary school students’ attitudes toward STEM and perceived learning in an afterschool setting. Three elementary school teachers and 18 fourth to sixth graders participated in an eight-week-long program. Quantitative and qualitative data were collected and analyzed, and showed students’ attitudes toward math improved significantly at the end of the robotics curriculum. Three specific areas of learning were identified, including STEM content learning and connection, engagement and perseverance, …
Mech 234-003: Engineering Mechanics - Statics, G. Milano
Mech 234-003: Engineering Mechanics - Statics, G. Milano
Civil and Environmental Engineering Syllabi
No abstract provided.