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Full-Text Articles in Other Engineering

Supercritical Co2 Foam Enhanced Oil Recovery: From Mechanistic Model Fit To Lab Experiments To Field-Scale Evaluation, Mohammad Izadi Sep 2019

Supercritical Co2 Foam Enhanced Oil Recovery: From Mechanistic Model Fit To Lab Experiments To Field-Scale Evaluation, Mohammad Izadi

LSU Doctoral Dissertations

This study investigates how a mechanistic foam modeling approach based on bubble population balance is applied to a series of laboratory experimental data of a supercritical CO2 foam in reservoir conditions to extract model parameters (topic 1). The model with model parameters determined from the fit is then used to estimate how far fine-textured strong foam can propagate into the reservoir, before turning into coarse-textured weak foam and before being segregated by gravity (topic 2). With the help of mechanistic model, a possible range of gas mobility for supercritical CO2 foam is calculated and the resulting gas-phase mobility ...


Delivering Energy Savings For The Supply Chain Through Building Information Modelling As A Result Of The Horizon 2020 Energy Bimcert Project, Barry Mcauley, Avril Behan Sep 2019

Delivering Energy Savings For The Supply Chain Through Building Information Modelling As A Result Of The Horizon 2020 Energy Bimcert Project, Barry Mcauley, Avril Behan

Conference papers

The global buildings sector is now responsible for 40% of final energy consumption as well as accounting for 33% of energy-related carbon dioxide emissions. This has resulted in a growing urgency to address energy and emissions from buildings and construction, to meet restrictive 2020 targets as specified by the European Union (EU). To achieve these targets a number of funding initiatives have been put in place through Horizon 2020 with a focus on BIM, due to it having the potential to rapidly produce energy outputs that enable design teams to analyse and compare the most cost-effective, energy-efficient options. However, despite ...


A Study Of Onboarding And Turnover Mediating Variables In U.S. Air Force Officers, Brett S. Bowers Sep 2019

A Study Of Onboarding And Turnover Mediating Variables In U.S. Air Force Officers, Brett S. Bowers

Theses and Dissertations

Employee retention, while always a concern in the workplace, has become a greater challenge for organizations in recent years. Today’s working class has displayed a propensity to change jobs more rapidly than previous generations, exacerbating not only turnover rates but also the costs associated with them (Frankel, 2016). This challenge is especially relevant to the United States Air Force, which has experienced difficulty retaining young officers in recent years. The problems resulting from this voluntary turnover are exceedingly impactful to the military command structure, as senior leaders must work their way up from the lowest ranks. As such, the ...


Reducing Threading Dislocation In Gasb Epilayer Grown On Gaas Substrate For Photovoltaic And Thermophotovoltaic Application, Ahmad Mansoori Jul 2019

Reducing Threading Dislocation In Gasb Epilayer Grown On Gaas Substrate For Photovoltaic And Thermophotovoltaic Application, Ahmad Mansoori

Optical Science and Engineering ETDs

GaSb based photovoltaic devices have been demonstrated on GaAs substrates by an inducing interfacial array of 90° misfit dislocations. Despite the beneficial qualities of the highly stable 90° misfit dislocation, there is a significant density of residual threading dislocations in the GaSb layer, resulting in the degradation of the electrical performance of such photovoltaic cells compared to lattice matched devices. We aim to reduce threading dislocation density by optimizing growth temperature and by using an AlSb dislocation filtering layer. The growth temperature optimization results in a reduction of the threading dislocation density to 1.3 × 108 cm−2. Adding ...


Workforce Development Through Online Experiential Learning For Stem Education, Arefeh Mohammadi, Kevin Grosskopf, John Killingsworth Jun 2019

Workforce Development Through Online Experiential Learning For Stem Education, Arefeh Mohammadi, Kevin Grosskopf, John Killingsworth

Architectural Engineering -- Faculty Publications

The U.S. workforce is increasingly comprised of older adults, women, and minorities who lack basic skills and are unable to acquire these skills through traditional educational and training programs. New approaches are needed to provide effective training to the adult learner and flexible support for nontraditional students who must balance work-life demands with limited educational opportunities. Contextualized teaching and learning (CTL) is a form of experiential learning that blends both basic skills and occupational training together in environments that allow students to relate subject matter to real-world situations. Virtual CTL environments can be created to better engage students, provide ...


Development Of A Framework To Support The Effective Adoption Of Bim In The Public Sector: Lessons For Ireland, Shiyao Kuang, Alan Hore, Barry Mcauley, Roger West Jun 2019

Development Of A Framework To Support The Effective Adoption Of Bim In The Public Sector: Lessons For Ireland, Shiyao Kuang, Alan Hore, Barry Mcauley, Roger West

Conference papers

Building Information Modelling (BIM) has been formally adopted by many countries with the promise of creating greater economic, social and sustainability benefits. Several authors and institutions have presented alternative BIM policies and tactics which have been adopted by developed countries. However, there is evidence to indicate that BIM adoption theories are not well established and, in particular, the linkage between BIM public sector adoption strategy outcomes and their contribution to achieving Government policy objectives are underdeveloped. This paper will present the outcome of the first phase of a systematic literature review of published studies (including journal papers and noteworthy international ...


Computer Vision Machine Learning And Future-Oriented Ethics, Abagayle Lee Blank Jun 2019

Computer Vision Machine Learning And Future-Oriented Ethics, Abagayle Lee Blank

Honors Projects

Computer Vision Machine Learning (CVML) in the application of facial recognition is currently being researched, developed, and deployed across the world. It is of interest to governments, technology companies, and consumers. However, fundamental issues remain related to human rights, error rates, and bias. These issues have the potential to create societal backlash towards the technology which could limit its benefits as well as harm people in the process. To develop facial recognition technology that will be beneficial to society in and beyond the next decade, society must put ethics at the forefront. Drawing on AI4People’s adaption of bioethics for ...


Machine Learning With Multi-Class Regression And Neural Networks: Analysis And Visualization Of Crime Data In Seattle, Erkin David George Jun 2019

Machine Learning With Multi-Class Regression And Neural Networks: Analysis And Visualization Of Crime Data In Seattle, Erkin David George

Honors Projects

This article examines the implications of machine learning algorithms and models, and the significance of their construction when investigating criminal data. It uses machine learning models and tools to store, clean and analyze data that is fed into a machine learning model. This model is then compared to another model to test for accuracy, biases and patterns that are detected in between the experiments. The data was collected from data.seattle.gov and was published by the City of Seattle Data Portal and was accessed on September 17, 2018. This research will be looking into how machine learning models can ...


Evaluating The Potential For Renewable Energy Technology At Us Ski Resorts, Tyler Farrell Jun 2019

Evaluating The Potential For Renewable Energy Technology At Us Ski Resorts, Tyler Farrell

ENGS 86 Independent Projects (AB Students)

The ski industry is one of the most at-risk industries as a result of climate change. Warming temperatures and decreasing snowfall are contributing to a decline in skier visitations, shorter seasons, and higher energy costs. Currently, only 3 of 478 ski resorts in the United States rely on 100% renewable energy sources. The intent of this paper is to understand what the issues and barriers are to renewable energy development at ski resorts, and what technologies are feasible and appropriate for this industry to develop. While the renewable energy industry faces many issues and barriers, the ski industry faces its ...


Silverton Timeshare Tower “The Berkley”, Kevin Murphy Jun 2019

Silverton Timeshare Tower “The Berkley”, Kevin Murphy

Culminating Experience Project Reports in Fire Protection Engineering

The Berkley (aka the Silverton Timeshare Tower) was reviewed for compliance with the code of record. This included review of the full architectural set of drawings, as well as the available Fire Protection Report and Amendments that were issued prior to and during construction. This analysis has been slowly performed throughout the extent of my graduate career at California Polytechnic State University, San Luis Obispo (Cal Poly), and has been in depth for each applicable area of study. Each of the studies performed will be reviewed in the applicable sections below, be it for prescriptive analysis of the existing facility ...


Atx Storage: Fire And Life Safety Analysis, Perla Salcedo Jun 2019

Atx Storage: Fire And Life Safety Analysis, Perla Salcedo

Culminating Experience Project Reports in Fire Protection Engineering

The following report is a fire and hazard protection analysis of a new building. This new building is a self-storage building called ATX Storage locate in Austin, TX. The prescriptive requirements set by the codes and standards used at time of construction of the building have been met. The building has been properly classified with respect to occupancy as S1, Group B and R-3 and construction type II A Sprinklered. Appropriate design for interior partitions and exterior wall have been identified. Interior finish requirements have been analyzed for a better understanding of aesthetics guidelines. Based on the sprinkler drawing calculations ...


Building V: Fire And Life Safety Analysis, Andrew Ko Jun 2019

Building V: Fire And Life Safety Analysis, Andrew Ko

Culminating Experience Project Reports in Fire Protection Engineering

A fire and life safety analysis was completed for Building V as part of a culminating project in the California Polytechnic State University at San Luis Obispo Fire Protection Engineering Master’s Degree Program. This report will detail both a prescriptive design based on the 2013 California Building Code and applicable standards as well as a performance based analysis based on a design fire scenario.

The prescriptive design will discuss four main components of compliance: 1) Structural Fire Protection, 2) Fire Alarm, 3) Fire Sprinkler, and 4) Means of Egress. Structural fire protection analysis is separated into four parts: type ...


Gaslamp Hotel-Fire Protection/Life Safety Analysis, Garner A. Palenske Jun 2019

Gaslamp Hotel-Fire Protection/Life Safety Analysis, Garner A. Palenske

Culminating Experience Project Reports in Fire Protection Engineering

The Gaslamp Hotel was analyzed for fire protection/life safety using two different methodologies; a prescriptive approach and a performance-based approach. Both considered the same features of the building. The prescriptive analyses studied the variation of the building’s fire protection/life safety components from those required by the applicable codes and standards. This included building construction, fire resistance, fire suppression, fire detection, smoke control system, and egress systems. The results of the analysis indicate that the building complies with the requirements of the applicable codes and standards, with three exceptions relating to occupant egress: 1) The first-floor bar area ...


Cal Poly State University Robert E. Kennedy Library Fire Protection Analysis Report, Timothy Anderson Jun 2019

Cal Poly State University Robert E. Kennedy Library Fire Protection Analysis Report, Timothy Anderson

Culminating Experience Project Reports in Fire Protection Engineering

This report determines whether or not the fire protection and life safety features of Robert E. Kennedy Library are consistent with the fire protection objectives established in nationally recognized fire protection codes and standards. This analysis is performed to establish a technical baseline for identification of fire protection deficiencies.

Kennedy Library is the campus student library at California Polytechnic State University. The facility provides resources and services in a variety of media to meet the needs of university students and faculty.

This analysis consists of a prescriptive analysis and a performance-based analysis. The prescriptive analysis is an analysis of the ...


Fire Protection System Analysis Of Warren J. Baker Center Of Science And Mathematics, Jacob Dentici Jun 2019

Fire Protection System Analysis Of Warren J. Baker Center Of Science And Mathematics, Jacob Dentici

Culminating Experience Project Reports in Fire Protection Engineering

This report analyzes the different fire protection systems and features of the Warren J. Baker Center for Science and Mathematics at the California Polytechnic State University, San Luis Obispo campus. This building is used for lectures, laboratories, study spaces, faculty spaces, and storage spaces for the students and faculty at the Cal Poly campus. Typically, there are science and math courses taught within this building. The building is a 6-story structure, that is not classified as a high-rise due to the location of fire department access and has a five-story atrium located on levels 2 through 6. There are two ...


Fire And Life Safety Analysis: Building 171a – Poly Canyon Village, Delaney Seeburger Jun 2019

Fire And Life Safety Analysis: Building 171a – Poly Canyon Village, Delaney Seeburger

Culminating Experience Project Reports in Fire Protection Engineering

A fire and life safety analysis was performed in fulfillment of one of the requirements for the Master of Science Degree in Fire Protection Engineering from California Polytechnic State University San Luis Obispo (Cal Poly). The analysis consisted of a prescriptive and a performance-based analysis. These analyses were performed on Building 171A which is part of the Cal Poly San Luis Obispo campus. The prescriptive analysis consisted of four distinct areas of focus: 1) Structural Fire Protection, 2) Water-Based Suppression Systems, 3) Fire Alarm and Detection Systems, 4) Egress Analysis and Design Prescriptive analyses are performed to determine whether a ...


Forward Osmosis Flow Rate Differential Using Different Osmotic Agents, John M. Trzinski May 2019

Forward Osmosis Flow Rate Differential Using Different Osmotic Agents, John M. Trzinski

Beyond: Undergraduate Research Journal

Life support is one of the most vital systems flown on manned spaceflight missions. The systems currently used are large, heavy, inefficient, and power consuming in an environment that requires nearly perfect conditions to function. Forward Osmosis (FO) is a form of filtration that uses the natural properties of water and concentration gradients to filter water without the need for any electricity. An experiment was conducted during the Embry Riddle Summer 2018 study abroad to the LUNARES research station in Piła, Poland. This experiment explored how the flow rate of water through a FO filtration system could be affected by ...


Network Traffic Behavioral Analytics For Detection Of Ddos Attacks, Alma D. Lopez, Asha P. Mohan, Sukumaran Nair May 2019

Network Traffic Behavioral Analytics For Detection Of Ddos Attacks, Alma D. Lopez, Asha P. Mohan, Sukumaran Nair

SMU Data Science Review

As more organizations and businesses in different sectors are moving to a digital transformation, there is a steady increase in malware, facing data theft or service interruptions caused by cyberattacks on network or application that impact their customer experience. Bot and Distributed Denial of Service (DDoS) attacks consistently challenge every industry relying on the internet. In this paper, we focus on Machine Learning techniques to detect DDoS attack in network communication flows using continuous learning algorithm that learns the normal pattern of network traffic, behavior of the network protocols and identify a compromised network flow. Detection of DDoS attack will ...


Generation And Use Of Femtosecond, Gigawatt, Near Infrared Laser Pulses From An Amplified, Mode-Locked, Ti:Sapphire Laser, David Anthony Valdés May 2019

Generation And Use Of Femtosecond, Gigawatt, Near Infrared Laser Pulses From An Amplified, Mode-Locked, Ti:Sapphire Laser, David Anthony Valdés

Optical Science and Engineering ETDs

This work modeled the early to middle successes achieved in the field of ultrafast, high peak power optics, beginning with the work of Nobel Prize winners Donna Strickland and Gérard Mourou in 1985. In our work, 100 fs light pulses of around 800 nm were generated by a Ti:Sapphire oscillator, then amplified to approximately 30 GW peak power using a chirped pulse amplification system that included regenerative and multi-pass amplifiers. As a verification of our pulses having high peak powers and ultrashort durations, they were then used to strike water, glass, and a Kerr Cell. Supercontinuum generation was observed ...


Design, Fabrication, And Characterization Of Multilayer Hyperbolic Metamaterials, James Dilts May 2019

Design, Fabrication, And Characterization Of Multilayer Hyperbolic Metamaterials, James Dilts

Graduate Theses - Physics and Optical Engineering

Hyperbolic metamaterials (HMMs) show extreme anisotropy, acting as metals and dielectrics along orthogonal directions. They are designed using the effective medium theory (EMT) and can be fabricated using standard semiconductor processing techniques. Current techniques used to characterize the optical behavior of HMMs have a high complexity or are unable to robustly determine the complex permittivity tensor. We describe the details of a procedure to obtain a very low mean-squared-error (MSE) for extraction of permittivity from hyperbolic metamaterials using spectroscopic ellipsometry. We have verified our procedure by fabricating three different samples of various materials and fill factors designed to have a ...


Challenges And Opportunities Of Layered Cathodes Of Linixmnyco(1-X-Y)O2 For High-Performance Lithium-Ion Batteries, Jason Frank May 2019

Challenges And Opportunities Of Layered Cathodes Of Linixmnyco(1-X-Y)O2 For High-Performance Lithium-Ion Batteries, Jason Frank

Mechanical Engineering Undergraduate Honors Theses

High energy density lithium-ion batteries (LIBs) are widely demanded for portable electronic devices and electrical vehicles. Layered-structure LiCoO2 oxide (LCO) has been the most commonly used cathode material in commercial LIBs. Compared to LCO, LiNi1-x-yMnxCoyO2 (NMC) cathodes are particularly attractive due to their reduced cost and higher capacity. Among the NMC cathodes, nickel-containing LiNi0.5Co0.3Mn0.2O2 (NMC532) is one of the most promising cathode materials undergoing intensive investigation, but suffers from a series of technical issues, such as structural instability, performance fading, and safety ...


Ecocar Mobility Challenge Communications Plan, Whitney M. Brothers May 2019

Ecocar Mobility Challenge Communications Plan, Whitney M. Brothers

Chancellor’s Honors Program Projects

No abstract provided.


Investigation And Development Of Multiphysics Modeling Software Applications For Building Noise Control, Jennifer Solheim May 2019

Investigation And Development Of Multiphysics Modeling Software Applications For Building Noise Control, Jennifer Solheim

Theses/Capstones/Creative Projects

COMSOL Multiphysics is a simulation software for modeling engineering processes and designs. The software can be used to create applications that allow users to change variables in a model and see the effect on the physics phenomenon under investigation. COMSOL applications can provide an interactive learning experience and help students visualize engineering concepts. This project examines the use of COMSOL to develop applications related to noise control in buildings, focusing on making them useful for education. Two applications were developed based on existing COMSOL models. One simulates sound absorption by a porous foam, and the other simulates sound propagation through ...


The Eco-Smart Can V2.0, Darack B. Nanto May 2019

The Eco-Smart Can V2.0, Darack B. Nanto

Electronic Theses and Dissertations

On a scorching summer day in 2015, a campus maintenance worker was observed emptying a trash bin. Upon closer observation, it was noted that the bin was not full; in fact, it was less than one third full. There were other bins that were full and needed to be emptied urgently. It was confusing and problematic to see that bins that needed more attention were not prioritized. After extended research, it was found that maintenance operates on daily routes to pick up trash at designated times, regardless of the level of trash in the bins. Therefore, to tackle this issue ...


Applications Of Optimization Modeling In Multi-Disciplinary Engineering Research, Anton F. Astner, Ekramul Haque Ehite, Yang Li, Colin Sasthav Apr 2019

Applications Of Optimization Modeling In Multi-Disciplinary Engineering Research, Anton F. Astner, Ekramul Haque Ehite, Yang Li, Colin Sasthav

Biosystems Engineering and Soil Science Publications and Other Works

Optimization modeling is the process of selection of the best solution to a design problem using predetermined constraints from a set of prospective solutions. Increased computing power has made optimization solvers readily available for business/research needs. For example, Microsoft Excel has a simple, but robust solver. Such solvers can model linear, nonlinear, and integer programming problems that are limited in size. This study shows the use of the optimization model solvers in various research contexts.


Using Groundwater Modeling To Assess Groundwater And Stream Connectivity In A River Restoration Application, John Joseph Lunzer Apr 2019

Using Groundwater Modeling To Assess Groundwater And Stream Connectivity In A River Restoration Application, John Joseph Lunzer

Graduate Theses & Non-Theses

Historic placer mining operations along the Middle Fork John Day River (MFJD) north of Galena, Oregon have left the MFJD channel straightened, incised and lacking in riverbed structure. This lack of riverbed structure makes this stretch of the MFJD poor habitat for trout and migrating salmon. In order to restore this stretch of the MFJD to better serve aquatic species, Inter-Fluve Inc. (IF), United States Forest Service (USFS) and The Freshwater Trust (TFT) will be performing restoration to both the MFJD channel as well as Bear Creek, a tributary of the MFJD. The proposed restoration work will consist of re-routing ...


Dynamic Mechanical Response Of Additively Manufactured 316l And Alsi10mg, Kristofer Kuelper Apr 2019

Dynamic Mechanical Response Of Additively Manufactured 316l And Alsi10mg, Kristofer Kuelper

Graduate Theses & Non-Theses

Additive manufacturing (AM), or 3D printing, is a layer by layer method for the fabrication of end use parts. Its utilization in the production of metallic materials, while relatively new, is promising as an alternative technique to build custom or small batch parts with much greater agility than traditional manufacturing methods. The laser powder bed fusion (LPBF) AM technique offers a combination of high geometric accuracy and good mechanical properties for a variety of materials even without post-processing. It can do this by adjusting a number of processing parameters including the intensity of the laser and the thickness of the ...


Analysis Of Ash Fireplant Slates Of Deposit Sangruntau And The Possibility Of Their Enrichment, K.S. Sanakulov, O.F. Petukhov, B.T. Ruziev, U.Z. Sharafutdinov Mar 2019

Analysis Of Ash Fireplant Slates Of Deposit Sangruntau And The Possibility Of Their Enrichment, K.S. Sanakulov, O.F. Petukhov, B.T. Ruziev, U.Z. Sharafutdinov

Gorniy vestnik Uzbekistana

This article provides laboratory research data on the analysis of the ash of combustible shale from the Sangruntau deposit and the possibility of their enrichment. Magnetic enrichment of the ash of combustible shale was carried out in order to determine the yield of the magnetic fraction, determine the chemical composition of the products of magnetic separation, determine the extraction and the enrichment factor for the main elements. When gravitational enrichment of the ash of combustible shale gold almost completely goes into the gravity concentrate. Gravitational enrichment of rhenium, vanadium, copper, zinc, uranium does not occur.


Development Of A Technology For Obtaining An Affined Paladium Powder From Fulfilled Electrolytes, A.Kh. Khursanov, A.S. Khasanov, B.R. Vohidov Mar 2019

Development Of A Technology For Obtaining An Affined Paladium Powder From Fulfilled Electrolytes, A.Kh. Khursanov, A.S. Khasanov, B.R. Vohidov

Gorniy vestnik Uzbekistana

The article discusses the processing of waste solutions of the AGMK copper plant, and as a result of research, a technology has been developed for producing refined palladium in powder and in ingot. Also, cleaning methods for reducing impurities in the composition of refined palladium are given. The results of aqua regia dissolution, advantages, leaching parameters are analyzed and methods for the selective precipitation of palladium from solutions are given, the maximum degree of purification of palladium using low-cost and simple technologies is substantiated, and to achieve high economic performance.


Development Of Self-Ignition Mechanisms And Conditions Carbon Deposits And Terricons, A.E. Vorobev, R.B. Dzhimieva Mar 2019

Development Of Self-Ignition Mechanisms And Conditions Carbon Deposits And Terricons, A.E. Vorobev, R.B. Dzhimieva

Gorniy vestnik Uzbekistana

In this article, the mechanisms of spontaneous combustion of coal and coal-bearing rocks, as well as physical and mathematical modeling of the development of processes and the source of spontaneous combustion in the local zone of the coal-rock massif, are studied. predict the occurrence and prevention of these very dangerous phenomena.