Engineering Commons^™

Creation And Application Of Various Tools For The Reconstruction, Curation, And Analysis Of Genome-Scale Models Of Metabolism, Wheaton L. Schroeder

Department of Chemical and Biomolecular Engineering: Dissertations, Theses, and Student Research

Systems biology uses mathematics tools, modeling, and analysis for holistic understanding and design of biological systems, allowing the investigation of metabolism and the generation of actionable hypotheses based on model analyses. Detailed here are several systems biology tools for model reconstruction, curation, analysis, and application through synthetic biology. The first, OptFill, is a holistic (whole model) and conservative (minimizing change) tool to aid in genome-scale model (GSM) reconstructions by filling metabolic gaps caused by lack of system knowledge. This is accomplished through Mixed Integer Linear Programming (MILP), one step of which may also be independently used as an additional curation …

Early-Age Strength Of Co2 Cured Alkali-Activated Blast Furnace Slag Pastes, Yubin Jun, Seong Ho Han, Jae Hong Kim

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The effect of CO₂ curing including pre-conditioning on alkali-activated slags, activated by different alkaline activators (NaOH, Na₂SiO₃, and KOH solution), is studied. While dry pre-conditioning before the CO₂ curing increases the strengths of all mixtures, the effect of pre-conditioning time is dependent on the alkali activator used to produce samples. The CO₃-bearing reaction product in samples also depends on the alkali activator. Gaylussite, pirssonite, hydrotalcite, and calcite are observed in the NaOH activator, and calcite, hydrotalcite, and C₄AcH₁₁ are detected in the NaOH and Na₂SiO₃ (9:1) …

Performance Evaluation Of 5g Cloud Radio Access Networks Using New Fading Channel Models, Ayad Nafe Bihnam

Theses and Dissertations

The exponential demand for high-speed networks and data processing forces mobile network operators to develop new solutions to cope with the current indigence. The desire for more reliable, power-efficient, cost-efficient networks arises due to increasing smartphones, tablets, and applications that demand data-hungry applications. Various solutions and technologies have been proposed to cope with these challenges where Cloud Radio Access Network (C-RAN) is one among many others. In C-RAN, the baseband units are decoupled from the Remote Radio Heads (RRHs) and transferred to the cloud to enable centralized, supporting, controlling, and data processing. The RRHs, on the other hand, are considered …

Phasor Domain Modeling Of Type-Iii Wind Turbines, Mohammed Alqahtani

USF Tampa Graduate Theses and Dissertations

This dissertation research focuses on developing an accurate steady-state phasor model for Doubly Fed Induction Generator (DFIG)-based wind turbines (Type-III WTs). Unlike the classical synchronous or asynchronous generators, Type-III WTs are electronically coupled to the power grid. The steady-state and dynamic responses of the DFIG-based WTs depend on the behavior of the converters controllers. Accurate modeling requires reproducing the behavior of the power electronics and the control system for various operating scenarios. The analysis of this research area is carried out in two stages or tasks. The first task focuses on the balanced stator voltage situation, while the unbalanced stator …

Porous Scaffold And Soft Hydrogel Composite For Biomedical Applications, Matthew Dicerbo

Theses and Dissertations

Biophysical signals including stiffness and dimensionality influence a myriad of stem cell behaviors including morphology, mechanosensing, and differentiation. 2D stiff environments cause increased cellular spreading and induce osteogenic differentiation whereas 3D soft environments favor rounder cell morphologies attributed to a chondrogenic phenotype. The goal of this study is to create a composite that integrates these divergent biophysical signals within one system. This composite consists of a stiff and porous polycaprolactone (PCL) backbone that provides mechanical stiffness and a 2D environment. The PCL backbone is then perfused with mesenchymal stem cells (MSCs) and a soft methacrylated gelatin (GelMe) hydrogel to provide …

Leaf Cutter Ant Nest Soil Cement Stabilized Earthen Bricks: Materials And Methods For Engineering Field Applications, Faith Malay

USF Tampa Graduate Theses and Dissertations

As climate change threatens vulnerable tropical climates and development outpaces resource availability, the need for diverse construction material grows. The United Nations Sustainable Development Goals aim to reduce poverty in all forms. Diversifying construction material works toward reducing indoor air pollution, the eradication of houselessness, encouraging diversification in industry, and supporting small scale industrialization. In the Province of Bocas del Toro in Panama, there is a tenuous connection to the greater industries in the country due to location and existing infrastructure.This research presents a literature review of the historical approaches to the construction and chemistry of cement stabilized earth bricks, …

Information Technology News, Georgia Southern University

Information Technology: News & Publications (2012-2023)

• IT Professor Katz comments on the latest ransomware attack on St. Joseph’s Candler
• IT Professor Katz comments on the latest ransomware attack on St. Joseph’s Candler

Experimental Investigation Of The Performance Of A Hybrid Self-Healing System In Porous Asphalt Under Fatigue Loadings, Shi Xu, Liu Xueyan, Amir Tabakovic, Erik Schlangen

Articles

Self-healing asphalt, which is designed to achieve autonomic damage repair in asphalt pavement, offers a great life-extension prospect and therefore not only reduces pavement maintenance costs but also saves energy and reduces CO2 emissions. The combined asphalt self-healing system, incorporating both encapsulated rejuvenator and induction heating, can heal cracks with melted binder and aged binder rejuvenation, and the synergistic effect of the two technologies shows significant advantages in healing efficiency over the single self-healing method. This study explores the fatigue life extension prospect of the combined healing system in porous asphalt. To this aim, porous asphalt (PA) test specimens with …

The Role Of Scenography In The Narration Of The Inner Space Of Contemporary Museums Through Employment The Space Staging, Shamael M. W. Al-Dabbagh, Dania Saleh Yaheia Al-Jaboury

Al-Esraa University College Journal for Engineering Sciences

In the recent period, several design mechanisms have emerged related to the design of internal spaces in architecture, specifically the museum spaces and associated with exhibitions, and the most important of these scenographic mechanisms are clearly and significantly adopted in the field of theater to design the stage and the scene that embodies the narrative vision and the idea of the theater director and scenographic designer to express what the text wants from Anecdotal expressing the objectives of the product of the text, therefore the research aimed to delve into the effect of the scenography mechanism on the contemporary architectural …

Evaluating The Performance Of The Jadriya Water Project For Water Treatment, Rana Mohammed Rasheed

Al-Esraa University College Journal for Engineering Sciences

For the purpose of evaluating the performance of the Al-Jadriya water project, water samples were taken before and after the sedimentation basins to find out the efficiency of the sedimentation ponds, as well as water samples were taken before and after the filtration basins, to know the efficiency of the filtration basins by conducting the following tests on them (Turbidity, TDS, TC, pH) to ensure that these ponds work properly. It was found that the efficiency rate of sedimentation ponds was 83%, which indicates the inefficiency of these ponds, as well as the inefficiency of the fast and slow mixing …

Possible Developments Of The Industrialization Of Appropriate Building Subsystem For Iraq, Wisam William Saleem Al-Ayoubi

Al-Esraa University College Journal for Engineering Sciences

Industrialization of building has developed very rapidly in industrialized countries as well as in many other parts of the world to fulfill the need for housing and public buildings after the Second World War. Prefabricated building is defined as a type of building that consists of several elements or modular units prepared in advance and assembled on-site. The term prefabricated indicates that these building elements are manufactured in the workshop or factory and then combined with other elements. Iraq has witnessed vital development in the construction industry sector. The study investigates the appropriate technology for Iraq, considering resources, economy, labor, …

Ion Exchange Method For Sulphate Removal From Treated Wastewater Of Al-Doura Refinery, Rana Mohammed Rasheed

Al-Esraa University College Journal for Engineering Sciences

The treated wastewater by the industrial Wastewater Treatment Plant (WWTP), commonly named (INGECO) in Al-Doura refinery, suffers from highly sulfate concentrations that exceed the EPA specified limits of 250 mg/L. Laboratory water quality historical data have been reviewed and analyzed to determine the annual rate, maximum, and peak sulfate concentrations, which were found to be 360 mg/L, 425 mg/L, and 550 mg/L, respectively. A field inspection was conducted to identify the reasons for the high sulfate concentrations in the wastewater of most refinery process units. It was found that the maximum required sulfate remaining concentration should not exceed 10 mg/L …

Crack-Length Estimation For Structural Health Monitoring Using The High-Frequency Resonances Excited By The Energy Release During Fatigue-Crack Growth, Joseph Roshan, Hanfei Mei, Asaad Migot, Victor Giurgiutiu

Faculty Publications

Acoustic waves are widely used in structural health monitoring (SHM) for detecting fatigue cracking. The strain energy released when a fatigue crack advances has the effect of exciting acoustic waves, which travel through the structures and are picked up by the sensors. Piezoelectric wafer active sensors (PWAS) can effectively sense acoustic waves due to fatigue-crack growth. Conventional acoustic-wave passive SHM, which relies on counting the number of acoustic events, cannot precisely estimate the crack length. In the present research, a novel method for estimating the crack length was proposed based on the high-frequency resonances excited in the crack by the …

The Effect Of The Spirit Of The Place On The Formulation Of Emotion In Contemporary Arab-Islamic Architecture, Mahdi Saleh Al-Faraj, Dania Saleh Yaheia

Al-Esraa University College Journal for Engineering Sciences

Arab-Islamic architecture is characterized by both constants and variables, with spiritual aspects (content) representing the constants and physical aspects (form) representing the variables. It evolves based on changing times and needs, with compassion being a significant feature associated with its spiritual aspects. Compassion is essential for collective agreement and individual emotional connection in Arab-Islamic architecture. The present research aims to investigate the influence of the spirit of the place, as embraced by designers, on the emotional characteristics of contemporary Arab-Islamic architecture. The research problem identified is the lack of a theoretical concept regarding the impact of the spirit of the …

The Effect Of Bioenergy Systems On The Architectural Product The Effect Of Fung Shui And Biogetric To Achieve The Performance Of Architectural Space, Abdullah Saadon Al-Mamoory, Ann Samari Ibrahim

Al-Esraa University College Journal for Engineering Sciences

This research presents an analytical study exploring the vital systems of energy science and their influence on architecture by examining ancient environmental philosophies like Feng Shui in China and bio-geometry in Egypt. These philosophies serve as guiding principles for studying energy and its impact on human daily life, highlighting their effects on integrated ecosystems in the design of residential buildings at both external and internal levels. The study examines key aspects such as the influence of energy on furniture arrangement in living spaces. The primary objective is to establish a synergistic relationship between architectural design of residential spaces during occupancy …

Some Aspects Of The Suitability Of Three-Story Residential Buildings For Vertical Housing In Iraq, Wisam William Saleem Al-Ayoubi

Al-Esraa University College Journal for Engineering Sciences

This research initially aimed to examine the changes in housing since the 1930s, driven by rapid population growth and evolving lifestyles, juxtaposed with advancements in contemporary building materials that are environmentally compatible. After a comprehensive analysis of housing and living arrangements throughout history, including the evolution of open house units towards more interior-focused designs such as the Baghdadi house with its central courtyard, the study delved into the significant changes and the challenges posed by the rapid population growth. The focus of the study was on the viability of vertical housing in Iraq and the considerations related to low-rise residential …

Role Of Iconic Architecture In Sustainable Tourism Development, Basim H. H. Al-Majidi, Ann Samari Ibrahim

Al-Esraa University College Journal for Engineering Sciences

Architecture "is an expression of the way of life and the spirit of the ages and cultures in which I grew up" as the buildings speak for themselves. While tourism is a scenario "to define a city to an unfamiliar audience and acquire an identity for a citizen". Both architecture and tourism have been linked together since time immemorial. Architecture was the main aspect of attracting crowds, while tourism helped architecture survive the test of time as well as money. Both tourism and architecture operate in a symbiotic manner to break the lack of familiarity with any culture and to …

The Contribution Of Mining Sector To Sustainable Development In Saudi Arabia, Mourad Zmami, Ousama Ben-Salha, Sultan O. Almarshad, Houyem Chekki

Journal of Sustainable Mining

The mining sector development is among the priorities of the Saudi Vision 2030. There is currently a lot of interest in the role of the mining sector in Saudi Arabia. This research contributes to this debate by empirically assessing the effects of mining on sustainable development in Saudi Arabia during the period 1980-2018. Unlike many previous studies, the three sustainable development dimensions, namely economic, social, and environmental, are jointly considered. The cointegration analysis, based on the ARDL, Gregory-Hansen, and combined cointegration tests, confirms the existence of long-run relationships between mining and all sustainable development dimensions. Furthermore, the findings lend substantial …

Improve Outcomes In Lean Six Sigma With Servant Leadership, David W. Hoffa, Chad Laux, Manal Alduraibi

International Conference on Lean Six Sigma

1. Purpose

The purpose of this study was to explore lean leadership within Lean Six Sigma (LSS). The objective of this paper was to explore how LSS program success might be improved by focusing Black Belt efforts on mentoring Green Belts with a servant leadership model. The importance of Green Belt projects is typically overlooked in the literature. The effects of prioritizing the development of Green Belts and building a culture of continuous improvement over the traditional Black Belt project focus is explored.

2. Design/Methodology/Approach

The methodology of this paper is inspired by the authors’ field experiences in managing LSS …

Waste As A Product Of Organisational Culture, Dobrochna Sztajerska, Karolina Pawlusiak

International Conference on Lean Six Sigma

The organisational culture was subjected to studies for many years (Schein, 1983; Svyantek and DeShon, 1993; Sułkowski 2001, Chmielewska-Muciek 2009), so was the muda (waste) concept (Womack and Jones, 1996; Rother and Shook, 2003; Liker, 2003; Lisiecka and Burka, 2015). However, there is no research linking these two constructs, especially when it comes to looking for specific waste depending on the organisational culture.

Six Sigma And Lean Approach For Enhanced Process Value Chain, Maryam Zulfiqar

International Conference on Lean Six Sigma

Abstract

This research highlight the different aspects of implementing lean and six-sigma approach, their contrasting features and integration in manufacturing organizations. Qualitative research method has been used to conduct this research as the defined period of time for the research was limited. This method was pertinent for the deep analysis of literature and case studies of concerned approaches. It helped to conduct the research in a subjective manner. The use of secondary data saved time from preparing the questionnaires or surveys also the ethical approval from the University of the West of Scotland was not required. Descriptive feature of qualitative …

Lean Six Sigma As An Enabler For Healthcare Operational Excellence In Covid-19, Olivia Mcdermott Dr, Antony Jiju

International Conference on Lean Six Sigma

1. Purpose -This paper aims to present the results of a qualitative research interview study on the utilization and importance of Lean Six Sigma methods in the Healthcare sector in COVID-19 and in pandemics in general.
2. Design/methodology/approach -a qualitative interview approach was utilised by interviewing leading Lean Six Sigma academics and practitioners who are expert in and have experience in Lean Six Sigma.
3. Findings – Lean Six Sigma methods are proven and can be utilised in pandemic situations to improve efficiency and resilience in the healthcare system and readiness for pandemics.
4. Research limitations/implications - One limitation of this research was that …

Applying Lean Six Sigma And Systematic Layout Planning To Improve Patient Transportation Equipment Storage In An Acute Care Hospital, Sandra Furterer, Pratheeka Kancharla

International Conference on Lean Six Sigma

Purpose:

The purpose of this project was to optimize the patient transportation process at an acute care hospital to achieve reduced transportation times.

Methodology:

A detailed Lean Six Sigma study on the patient transport and equipment handling processes helped to determine possible ways to reduce the equipment handling time which eventually reduces the patient transportation time. The Systematic Layout Planning (SLP) approach usually applied in manufacturing environments was used to identify which patient transport equipment was needed to be stored in which locations throughout the hospital footprint. The assignment of equipment to locations was determined based on frequency of use, …

Space And Defense – Volume Twelve – Number One – Winter 2021, Space And Defense Journal

Space and Defense

No abstract provided.

Hydrophilic Modification Of Sla 3d Printed Droplet Generators By Photochemical Grafting, Tristan W. Bacha, Dylan C. Manuguerra, Robert A. Marano, Joseph F. Stanzione Iii

Henry M. Rowan College of Engineering Departmental Research

Few droplet generators manufactured using desktop stereolithography 3D printers have been reported in the literature. Moreover, 3D printed microfluidic chips are typically hydrophobic, limiting their application to water in oil droplets. Herein, we present designs for concentric and planar 3D printed microfluidic devices suitable for making polymeric microparticles using an off-the-shelf commercial stereolithography printer and resin. The devices consist of a microscope slide, binder clips, and printed components. Channels were modified by an ultraviolet grafting of methacrylic acid to the surface of chips, yielding a hydrophilic coating without modification to the bulk polymer. The water contact angle decreased from 97.0° …

Single-Image Super Resolution Using Convolutional Neural Network, William Symolon, Cihan H. Dagli

Engineering Management and Systems Engineering Faculty Research & Creative Works

Increasing threats to U.S. national security satellite constellations have resulted in an increased interest in constellation resilience and satellite redundancy. CubeSats have contributed to commercial, scientific and government applications in remote sensing, communications, navigation and research and have the potential to enhance satellite constellation resilience. However, the inherent size, weight and power limitations of CubeSats enforce constraints on imaging hardware; the small lenses and short focal lengths result in imagery with low spatial resolution. Low resolution limits the utility of CubeSat images for military planning purposes and national intelligence applications. This paper implements a super-resolution deep learning architecture and proposes …

All-Optical Nonreciprocity Due To Valley Polarization Pumping In Transition Metal Dichalcogenides, Sriram Guddala, Yuma Kawaguchi, Filipp Komissarenko, Svetlana Kiriushechkina, Anton Vakulenko, Kai Chen, Andrea Alù, Vinod M. Menon, Alexander B. Khanikaev

Publications and Research

Nonreciprocity and nonreciprocal optical devices play a vital role in modern photonic technologies by enforcing one-way propagation of light. Here, we demonstrate an all-optical approach to nonreciprocity based on valley-selective response in transition metal dichalcogenides (TMDs). This approach overcomes the limitations of magnetic materials and it does not require an external magnetic field. We provide experimental evidence of photoinduced nonreciprocity in a monolayer WS2 pumped by circularly polarized (CP) light. Nonreciprocity stems from valley-selective exciton population, giving rise to nonlinear circular dichroism controlled by CP pump fields. Our experimental results reveal a significant effect even at room temperature, despite considerable …

Adaptive Network Slicing In Fog Ran For Iot With Heterogeneous Latency And Computing Requirements: A Deep Reinforcement Learning Approach, Almuthanna Nassar

USF Tampa Graduate Theses and Dissertations

In view of the recent advances in Internet of Things (IoT) devices and the emerging new breed of smart city applications and intelligent vehicular systems driven by artificial intelligence, fog radio access network (F-RAN) has been recently introduced for the next generation wireless communications. The capability of F-RAN has emerged to overcome the latency limitations of cloud-RAN (C-RAN) and assure the quality-of-service (QoS) requirements of the ultra-reliable-low-latency-communication (URLLC) for IoT applications. To this end, fog nodes (FNs) are equipped with computing, signal processing and storage capabilities to extend the inherent operations and services of the cloud to the edge. However, …

A Method For Compact Representation Of Heterogenous And Multivariate Time Series For Robust Classification And Visualization, Alla Abdella

USF Tampa Graduate Theses and Dissertations

Processing multivariate sensory time-series with variable lengths is a challenging problem across different application domains due to the naturally complex, high-dimensional, and often non-stationary nature of the data. There are many practical examples of this in the industry particularly for the applications of sensor networks in monitoring production or distribution of goods around the globe. This thesis tackles the specific problem of time-series data representation in how we can better summarize and visualize multi-variate time series data coming from numerous sources in a sensor network distributed across a wide range of application scenarios. On one hand, we think the analysis …

Characterizing And Optimizing Asynchronous Event-Driven Architecture For Modern Cloud Systems, Shungeng Zhang

LSU Doctoral Dissertations

Achieving good performance and high efficiency simultaneously is an essential requirement for emerging modern cloud systems such as e-commerce due to their business impact. For example, Akamai reported that every 100ms delay in website load time could lead to a 6% drop in sales. Unfortunately, achieving good performance (e.g., low latency) for modern cloud systems at high resource utilization is significantly challenging. Despite continuing efforts by cloud professionals, however, they have consistently experienced performance degradation problems (e.g., the long-tail latency problem) due to the bursty workload in the cloud. To resolve the performance degradation problems, many previous research efforts have …