Engineering Commons^™

Cei Hub Failure Following A Cascadia Earthquake Event: Preliminary Modeling Of A Liquid Fuel Spill In The Lower Willamette And Columbia Rivers, Mike Du Bose

Civil and Environmental Engineering Undergraduate Honors Theses

The Critical Energy Infrastructure (CEI) Hub in Northwest Portland, OR spans a six-mile stretch of the Lower Willamette River and stores 90% of Oregon’s liquid fuel supply and 100% of the jet fuel for PDX. The CEI Hub is also built entirely on liquefiable soils which are likely to fail during a Cascadia earthquake event. The purpose of this project was to model a liquid fuel spill in the Lower Willamette and Columbia Rivers using the CE-QUAL-W2 model. Several scenarios were developed to account for different environmental conditions, (e.g., high and low discharge years) and varying spill durations (e.g., rapid …

Usgs 104b Grant Program: Kentucky’S Annual Report Fy 2019, Emily Koyagi, Steve Evans, Lindell Ormsbee

KWRRI Annual Technical Reports (USGS’s 104b Grant Program)

The Kentucky Water Resources Research Institute (KWRRI) is one of 54 Water Resource Research Institutes or Centers located throughout the United States and its territories. The state water resources research institutes are authorized by the Water Resources Research Act of 1964 (P.L. 88-379 codified at 42 U.S.C. 10301 et seq.) through the Water Resources Research Institutes Program administered by the United States Geological Survey (USGS) and organized as the National Institutes for Water Resources (NIWR). NIWR cooperates with the US Geological Survey (USGS) to support, coordinate and facilitate research.

The KWRRI administers several state-level USGS grant programs for water research …

Analysis Of Denial Of Service Attacks In Emerging Software Defined Network Infrastructures, Andrea P. Wright

USF Tampa Graduate Theses and Dissertations

Software defined networking (SDN) improves upon traditional networking protocol technologies by decoupling the data and control planes and moving all control provisioning decisions to a centralized SDN controller entity. This concept has matured over the last decade, having gained strong industry traction, and is now being widely deployed within enterprise and carrier networks to streamline network services provisioning and reduce costs. Overall, centralized control delivers much more cost-effective and flexible networking setups that can support a wide range of customized user-driven network management applications, e.g., traffic engineering, security, survivability, admission control, policy control, etc.

However, the separation of the data …

Tissue Engineering Pre-Reads, Ryan M. Williams

Open Educational Resources

This material provides an introduction to a tissue engineering module in an experimental methods in biomedical engineering course. Students are expected to be familiar with this material prior to a pre-assessment taken at the beginning of class as we have condense lecture time this semester.

Shtëpit E Mençura, Teknologjia, Implementimi Dhe Zgjerimi I Saj Sot, Blendi Robaj

Theses and Dissertations

Sistemet e shtëpive të mençura arritën popullaritet të madh në dekadat e fundit ashtu si edhe ato rrisin komoditetin dhe cilësinë e jetës. Shumica e sistemeve të shtëpive të mençura kontrollohen nga smartphone dhe mikrokontrollues. Një aplikacion smartphone përdoret për të kontrolluar dhe monitoroni funksionet e shtëpisë duke përdorur teknikat e komunikimit pa kabllo. Në këtë punim përmes metodës së analizës do ta trajtojmë në mënyrë me specifike rendësin e shtëpive të mençura (smart home).

Shtëpia e zgjuar është zgjerimi rezidencial i automatizimit të ndërtesës dhe përfshin kontrollin dhe automatizimin e të gjithë teknologjisë së saj të ngulitur. Ajo përcakton …

Dobesite Ne Infrastruktuen E Web-It, Alba Kelmendi

Theses and Dissertations

Siguria në aplikacionet e bazuara në UEB është shume komplekse dhe esenciale. Në këtë punim ne do të shtjellojmë aplikimin e sigurisë gjatë përdorimit të infrastrukturës të internetit. Meqë gjithmonë gjatë përdorimit të kompjuterëve jemi të lidhur me internet ky bëhet shkas që të bëhemi target kryesor i sulmeve të ndryshme. Në pjesën e parë të projektit i kemi shtjelluar sulmet që ndodhin në UEB-server (DoS, MITM, Injektimet SQL.). Në pjesën e dytë kemi dhëne instruksione praktike se si bëhet depërtimi jo-legjitim i UEB-aplikacioneve përmes sulmeve të ndryshme. Në pjesën e fundit kemi specifikuar hakimin e koncepteve të ndryshme të …

E-Ditari, Enis Halimi

Theses and Dissertations

Pasi bota u godit nga një pandemi e cila bëri që të mbyllen shkollat, mësimi nëpër shkolla u vendos të vijonte online. Kjo bëri që shumë gjëra tradicionale të shkollave si ditarët e shumë gjëra tjera të mos përdoren më. Synimi i këtij punimi është zhvillimi i një ditari elektronik ose E-Ditari. E-Ditari është një web aplikacion i cili bën zgjidhjen e këtyre problemeve duke zëvendësuar ditarët e shkollave të ndryshme. Programi ndahet në dy pjesë, atë të nxënësit/prindërit si dhe mësimdhënësit/stafit të shkollës. Qasjen në program mund të bëhet përmes internetit duke përdorur shfletuesit si dhe qasje do të …

The Influence Of Channel Deepening On Tides, River Discharge Effects, And Storm Surge, Stefan A. Talke, Ramin Familkhalili, David A. Jay

Civil and Environmental Engineering Faculty Publications and Presentations

We combine archival research, semi-analytical models, and numerical simulations to address the following question: how do changes to channel geometry alter tidal properties and flood dynamics in a hyposynchronous, strongly frictional estuary with a landward decay in tidal amplitudes? Records in the Saint Johns River Estuary since the 1890s show that tidal range has doubled in Jacksonville, Florida. Near the estuary inlet, tidal discharge approximately doubled but tidal amplitudes increased only ~6%. Modeling shows that increased shipping channel depths from 5-6 to ~13m drove the observed changes, with other factors like channel shortening and width reduction producing comparatively minor effects. …

Guest Editorial: Edge Intelligence For Beyond 5g Networks, Yan Zhang, Zhiyong Feng, Hassnaa Moustafa, Feng Ye, Usman Javaid, Chunfen Cui

Electrical and Computer Engineering Faculty Publications

Beyond fifth-generation (B5G) networks, or so-called "6G", is the next-generation wireless communications systems that will radically change how Society evolves. Edge intelligence is emerging as a new concept and has extremely high potential in addressing the new challenges in B5G networks by providing mobile edge computing and edge caching capabilities together with Artificial Intelligence (AI) to the proximity of end users. In edge intelligence empowered B5G networks, edge resources are managed by AI systems for offering powerful computational processing and massive data acquisition locally at edge networks. AI helps to obtain efficient resource scheduling strategies in a complex environment with …

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 …

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, …

Study Of Fragility Functions For Assessing Damage To Water Pipe Networks Caused By Earthquake Loading, Dylan Joseph Merlo

Master's Theses

The performance of water lifelines during seismic events is an area of ongoing research. In this study we evaluate eight (8) different seismic events and the impact that ground shaking and ground deformations had on water pipeline systems. The overall goal of this work is to provide municipalities and utility providers with tools for mitigating the consequences of seismic hazards on water lifeline systems by analyzing the accuracy of damage estimation models. Three (3) different repair rate models are evaluated using data collected from the seismic events and compared to observed repair rate data. Results are analyzed to examine the …

Louver And Effusion Cooling Heat Transfer For A Double Wall Effusion Plate With Impingement Jet Array Coolant Supply, Sneha Reddy Vanga, Phillip M. Ligrani, Joseph Knox, Federico Liberatore, Rajeshriben Patel, Ying-Hsiang Ho

PRC-Affiliated Research

Louver slot cooling is employed, which consists of an aligned collection of film cooling holes, contained within a specially-designed device which concentrates, and directs the coolant from a slot, so that cooling air then advects as a layer downstream along the test surface. This louver-supplied coolant is then supplemented by coolant which emerges from different rows of downstream film cooling holes. Coolant for both cooling arrangements is supplied using an array of impingement jets. Experimental data are provided for a mainstream Reynolds number Rems range of 168,000–181,000. Full-coverage film cooling initial blowing ratio values are 2.5, 3.2, 4.4, and 5.2, …

Determination Of The Feature Resolution Of Processed Image Data Via Statistical Analysis, Joseph S. Indeck, Jesus O. Mares Jr., James P. Vitarelli, Kavan Hazeli

PRC-Affiliated Research

A method is presented to determine the feature resolution of physically relevant metrics of data obtained from segmented image sets. The presented method determines the best-fit distribution curve of a dataset by analyzing a truncated portion of the data. An effective resolvable size for the metric of interest is established when including parts of the truncated dataset results in exceeding a specified error tolerance. As such, this method allows for the determination of the feature resolution regardless of the processing parameters or imaging instrumentation. Additionally, the number of missing objects that exist below the resolution of the instrumentation may be …

Louver And Effusion Cooling Heat Transfer For A Double Wall Effusion Plate With Impingement Jet Array Coolant Supply, Sneha Reddy Vanga, Phillip M. Ligrani, Joseph Knox, Federico Liberatore, Rajeshriben Patel, Ying-Hsiang Ho

PRC-Affiliated Research

Louver slot cooling is employed, which consists of an aligned collection of film cooling holes, contained within a specially-designed device which concentrates, and directs the coolant from a slot, so that cooling air then advects as a layer downstream along the test surface. This louver-supplied coolant is then supplemented by coolant which emerges from different rows of downstream film cooling holes. Coolant for both cooling arrangements is supplied using an array of impingement jets. Experimental data are provided for a mainstream Reynolds number Rems range of 168,000–181,000. Full-coverage film cooling initial blowing ratio values are 2.5, 3.2, 4.4, and 5.2, …

The Drier Dryer, Daniel Anderson, Justin Lee, Thomas Morey, Josh Sunada

Mechanical Engineering Senior Theses

With our product, The Drier Dryer, we aim to increase the efficiency of clothing dryers. This report contains an indepth look at the design approach we are taking to create our product. Our design utilizes a thermoelectric cooler combined with heat sinks and heat pipes to efficiently cool air to its dew point temperature and then reheat the air prior to sending it into a clothes dryer intake. Cooling the air to dew point temperature allows moisture to be removed from the air consequently decreasing the relative humidity. Throughout our design process we obtained simulation results providing a theoretical temperature …

The Effect Of Lanthanides On Corn Growth, Savanna Vacek

Undergraduate Research Symposium Podium Presentations

Wastewater treatment plants (WWTPs) offer a reliable source of reclaimed water for irrigation. Metal-based chemicals (i.e. coagulants) are frequently employed in wastewater treatment, and residual metal ions remain in the treated wastewater, which could result in application of these metal ions to agricultural fields and crops. This study focuses on an emerging coagulant containing lanthanum. The behavior of lanthanum reclaimed water (LaRW) towards corn growth is barely known. Thus, if we are to recycle LaRW to support corn growth, the effects of LaRW on corn growth need to be studied. Corn kernels were grown in varying lanthanum concentrations (0-5000 mg …

Automated Residential Energy Audits Using A Smart Wifi Thermostat-Enabled Data Mining Approach, Abdulrahman Alanezi, Kevin Hallinan, Kefan Huang

Mechanical and Aerospace Engineering Faculty Publications

Smart WiFi thermostats, when they first reached the market, were touted as a means for achieving substantial heating and cooling energy cost savings. These savings did not materialize until additional features, such as geofencing, were added. Today, average savings from these thermostats of 10–12% in heating and 15% in cooling for a single-family residence have been reported. This research aims to demonstrate additional potential benefit of these thermostats, namely as a potential instrument for conducting virtual energy audits on residences. In this study, archived smart WiFi thermostat measured temperature data in the form of a power spectrum, corresponding historical weather …

Hydrothermal Synthesis And Structural Investigation Of A Crystalline Uranyl Borosilicate, Kristen A. Pace, Vladislav V. Klepov, Mark D. Smith, Travis Williams, Gregory Morrison, Jochen A. Lauterbach, Scott T. Misture, Hans Conrad Zur Loye

Faculty Publications

The relevance of multidimensional and porous crystalline materials to nuclear waste reme-diation and storage applications has motivated exploratory research focused on materials discovery of compounds, such as actinide mixed-oxoanion phases, which exhibit rich structural chemistry. The novel phase K1.8 Na1.2 [(UO2)BSi4 O12 ] has been synthesized using hydrothermal methods, rep-resenting the first example of a uranyl borosilicate. The three-dimensional structure crystallizes in the orthorhombic space group Cmce with lattice parameters a = 15.5471(19) Å, b = 14.3403(17) Å, c = 11.7315(15) Å, and V = 2615.5(6) Å3, and is composed of UO6 octahedra linked by [BSi4 O12 ]5− chains to …

Past The Tipping Point, But With Hope Of Return: How Creating A Geoengineering Compulsory Licensing Scheme Can Incentivize Innovation, Brooke Wilson

Washington and Lee Journal of Civil Rights and Social Justice

This Note explores the patenting of geoengineering technologies and issues arising from the early stages of this high-risk, high-reward technology. This Note focuses on one possible solution to solving the issues surrounding the patenting of geoengineering technology: Creating a specialized compulsory licensing scheme.

Learning Discriminative And Efficient Attention For Person Re-Identification Using Agglomerative Clustering Frameworks, Kshitij Nikhal

Department of Electrical and Computer Engineering: Dissertations, Theses, and Student Research

Recent advancements like multiple contextual analysis, attention mechanisms, distance-aware optimization, and multi-task guidance have been widely used for supervised person re-identification (ReID), but the implementation and effects of such methods in unsupervised person ReID frameworks are non-trivial and unclear, respectively. Moreover, with increasing size and complexity of image- and video-based ReID datasets, manual or semi-automated annotation procedures for supervised ReID are becoming labor intensive and cost prohibitive, which is undesirable especially considering the likelihood of annotation errors increase with scale/complexity of data collections. Therefore, this thesis proposes a new iterative clustering framework that incorporates (a) two attention architectures that learn …

High-Order Wave-Damage Interaction Coefficients (Wdic) Extracted Through Modal Decomposition, Hanfei Mei, Victor Giurgiutiu

Faculty Publications

This paper presents a new technique for the extraction of high-order wave-damage interaction coefficients (WDIC) through modal decomposition. The frequency and direction dependent complex-valued WDIC are used to model the scattering and mode conversion phenomena of guided wave interaction with damage. These coefficients are extracted from the harmonic analysis of local finite element model (FEM) mesh with non-reflective boundaries (NRB) and they are capable of describing the amplitude and phase of the scattered waves as a function of frequency and direction. To extract the WDIC of each wave mode, all the possible propagating wave modes are considered to be scattered …

Spring 2021, Joëlle Walls

The Investigator Research Magazine

Dear readers,

We are proud to present the spring issue of The Investigator and share with you the expansion of diverse research and scholarly activities occurring at Kennesaw State. Although this year was met with challenges, KSU’s research enterprise has thrived and grown.

In this issue, Pamela Whitten discussed the establishment of the Interdisciplinary Innovation Initiative, an internal funding program to spur new collaborations focused on KSU’s research themes. And alumni Carl Saint-Louis and Karen Armstrong, featured in our cover story, have returned as faculty to mentor the next generation.

This publication would not have been possible without the visual …

Six-Sigma Quality Management Of Additive Manufacturing, Hui Yang, Prahalad Rao, Timothy Simpson, Yan Lu, Paul Witherell, Abdalla R. Nassar, Edward Reutzel, Soundar Kumara

Department of Mechanical and Materials Engineering: Faculty Publications

Quality is a key determinant in deploying new processes, products, or services and influences the adoption of emerging manufacturing technologies. The advent of additive manufacturing (AM) as a manufacturing process has the potential to revolutionize a host of enterprise-related functions from production to the supply chain. The unprecedented level of design flexibility and expanded functionality offered by AM, coupled with greatly reduced lead times, can potentially pave the way for mass customization. However, widespread application of AM is currently hampered by technical challenges in process repeatability and quality management. The breakthrough effect of six sigma (6S) has been demonstrated in …

Determination Of The Feature Resolution Of Processed Image Data Via Statistical Analysis, Joseph S. Indeck, Jesus O. Mares Jr., James P. Vitarelli, Kavan Hazeli

PRC-Affiliated Research

A method is presented to determine the feature resolution of physically relevant metrics of data obtained from segmented image sets. The presented method determines the best-fit distribution curve of a dataset by analyzing a truncated portion of the data. An effective resolvable size for the metric of interest is established when including parts of the truncated dataset results in exceeding a specified error tolerance. As such, this method allows for the determination of the feature resolution regardless of the processing parameters or imaging instrumentation. Additionally, the number of missing objects that exist below the resolution of the instrumentation may be …

Program And Proceedings: Nebraska Academy Of Sciences 1880–2021, 141st Anniversary Year, One Hundred-Thirty-First Annual Meeting, April 23-24, 2021

Nebraska Academy of Sciences: Programs and Proceedings

Program

Aeronautics and Space Science

Anthropology

Applied Science and Technology

Biological and Medical Sciences

Collegiate Academy: Biology

Collegiate Academy: Chemistry and Physics

Earth Sciences

Environmental Sciences

General Chemistry

General Physics

Teaching of Science and Mathematics

Friend of Science Award: Paul Karr

Nanoanalytical Analysis Of Bisphosphonate-Driven Alterations Of Microcalcifications Using A 3d Hydrogel System And In Vivo Mouse Model, Jessica L. Ruiz, Joshua D. Hutcheson, Luis Cardoso, Amirala Bakhshian Nik, Alexandra Condado De Abreu, Tan Pham, Fabrizio Buffolo, Sara Busatto, Stefania Frederici, Andrea Ridolfi, Masanori Aikawa, Sergio Bertazzo, Paolo Bergese, Sheldon Weinbaum, Elena Aikawa

Publications and Research

Vascular calcification predicts atherosclerotic plaque rupture and cardiovascular events. Retrospective studies of women taking bisphosphonates (BiPs), a proposed therapy for vascular calcification, showed that BiPs paradoxically increased morbidity in patients with prior acute cardiovascular events but decreased mortality in event-free patients. Calcifying extracellular vesicles (EVs), released by cells within atherosclerotic plaques, aggregate and nucleate calcification. We hypothesized that BiPs block EV aggregation and modify existing mineral growth, potentially altering microcalcification morphology and the risk of plaque rupture. Three-dimensional (3D) collagen hydrogels incubated with calcifying EVs were used to mimic fibrous cap calcification in vitro, while an ApoE−/− mouse was used …

Isolation Enhancement For Mimo Patch Antennas Sharing A Common Thick Substrate: Using A Dielectric Block To Control Space-Wave Coupling To Cancel Surface-Wave Coupling, Min Li, Muhammad Yasir Jamal, Lijun Jiang, Kwan Lawrence Yeung

Electrical and Computer Engineering Faculty Research & Creative Works

This article presents a novel and simple decoupling method to increase the isolation between two closely spaced patch antennas sharing a common thick substrate. The decoupling can be simply realized by adding a pure dielectric block (DB) above the coupled array. By means of DB to modify the space permittivity (propagation constant), the space-wave coupling can be controlled to cancel surface-wave coupling for isolation enhancement. Five benchmarks of combinations of two patch antennas with different positions or orientations are investigated to validate the decoupling concept and elaborate on the design procedure. The results show that the proposed method could provide …

Adsorption And Surface Diffusion Of Metals On Α-Al2O3 For Advanced Manufacturing Applications, Austin Biaggne, Gregory Noble, Lan Li

Materials Science and Engineering Faculty Publications and Presentations

The adsorption and diffusion of Mo and Nb adatoms on the α-Al₂O₃ (0001) surface were explored using density functional theory-based methods. Adsorption energies of Mo and Nb adatoms at minima sites on the surface were determined. Mo and Nb adatoms prefer to adsorb to the same locations on the surface, and larger adsorption energies calculated for Nb compared to Mo indicate that Nb adatom-surface interactions are stronger than Mo. Using minima adsorption sites as initial and final locations for surface diffusion, energy barriers for diffusion were calculated using the nudged elastic band method. Overall, Mo and …

Biopolymerized Slope/Subgrade Stabilization And Advanced Field Monitoring, Chung R. Song, Layla Bitar, Richard L. Wood, Yong-Rak Kim, Jongwan Eun, Binyam M. Bekele, Basil Abualshar

Nebraska Department of Transportation: Research Reports

The slightly overconsolidated glacial tills and weathered shales in Midwestern states of the USA often show substantial strength degradation after construction. This strength reduction often causes time dependent slope failures along the roadside. This study investigated the possibility of applying biopolymer based soil modification techniques to mitigate the strength reduction phenomenon of these soils. For this research, several different biopolymers were evaluated through laboratory tests, two biopolymers were selected for extensive weathering tests, then a higher-performing biopolymer, Xanthan, was applied to a test slope in Verdigre, Nebraska with heavy instrumentation. The followings are the summary of the results.

The unweathered …