Digital Commons Network^™

Vanishing Relaxation Time Dynamics Of The Jordan Moore-Gibson-Thompson (Jmgt) Equation Arising In High Frequency Ultrasound (Hfu), Sutthirut Charoenphon

Electronic Theses and Dissertations Archive

The (third-order in time) JMGT equation is a nonlinear (quasilinear) Partial Differential Equation (PDE) model introduced to describe the acoustic velocity potential in ultrasound wave propagation. One begins with the parabolic Westervelt equation governing the dynamics of the pressure in nonlinear acoustic waves. In its derivation from constitutive laws, one then replaces the Fourier law with the Maxwell-Cattaneo law, to avoid the paradox of the infinite speed of propagation. This process then gives rise to a new third time derivative term, with a small constant coefficient $\tau$, referred to as relaxation time. As a consequence, the mathematical structure of the …

Value Estimation Of Software Functional Test Cases, Yao Shi

Electronic Theses and Dissertations Archive

Software testing is becoming more and more critical to ensure that software will function properly in the production environment. Consequently, the effort, time, and funds invested in software testing activities have been increased significantly. However, these resources cannot meet the increasing demand of software testing. As such, managers have to allocate testing resources to the test cases that are more critical to uncover defects. This study builds a value function that can quantify the value of a test case and thus provide an approach in selecting key functional test cases. Following the guidance of case study research and using an …

Truncated And Aggregated P Value Test, Lei Shi

Electronic Theses and Dissertations Archive

High throughput genome screening techniques are enabling researchers to interrogate human genome at single base pair level for their association with outcomes by genome wide association study (GWAS). However, it is usually challenging for GWAS to provide clear statistical conclusions at the gene level when multiple genomic features, either from same platform or different platforms, reside in the same gene. Traditionally a gene is considered as associated with an outcome when at least one genome feature within that gene is significantly associated with the outcome after adjusting for multiple genome-wide tests. Under that framework, only the most significant genome feature …

Factors Contributing To Student Persistence At Tennessee Technical Colleges, Roland Rayner

Electronic Theses and Dissertations Archive

The purpose of this qualitative case study is to explore factors that may contribute to student persistence in the completion of their program of study in an urban technical college setting. The study aims to identify the cognitive, social, and institutional factors that contribute to student persistence in the completion of their program of study. The following questions guided this study: (1) what are the cognitive, social, and institutional factors that may help technical college students persist in the completion of their training program, (2) what social factors would enhance technical students educational experience to improve persistence to program completion, …

Rethinking Animal Models Of Sepsis – Working Towards Improved Clinical Translation Whilst Integrating The 3rs, Manasi Nandi, Simon K. Jackson, Duncan Macrae, Manu Shankar-Hari, Jordi L. Tremoleda, Elliot Lilley

School of Biomedical Sciences

Abstract Sepsis is a major worldwide healthcare issue with unmet clinical need. Despite extensive animal research in this area, successful clinical translation has been largely unsuccessful. We propose one reason for this is that, sometimes, the experimental question is misdirected or unrealistic expectations are being made of the animal model. As sepsis models can lead to a rapid and substantial suffering – it is essential that we continually review experimental approaches and undertake a full harm:benefit impact assessment for each study. In some instances, this may require refinement of existing sepsis models. In other cases, it may be replacement to …

Blockchain And Insurance: A Review For Operations And Regulation, Richard Brophy

Articles

The purpose of this paper is to examine the operational and regulatory positions of the employment of Blockchain in the insurance industry. Blockchain technology has attracted wide interest from various stakeholders. Many theorists are predicting that this technology will disrupt financial services, including insurance. As stated that the development of blockchain is dependent on regulatory acceptance of this technology, it is essential to establish the current state of play with regard to the application and use of blockchain from a commercial and regulatory standpoints.

Emulsion Stability Of Heavy Oil With Surfactants And Nanoparticles, Zainab Abdulmohsein, Baojun Bai, Parthasakha Neogi

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

The recovered crude oil is often in form of an emulsion and the recovery is cut off when water to oil ratio exceeds a certain amount. The emulsions vary from water-in-oil to oil-in-water and the step that follows is to coalesce droplets to get two continuous liquids. Difficulties arise when the oil contains emulsifiers. There are naturally occurring surfactants, or the oil recovered is by enhanced oil recovery techniques which have additives that stabilize the droplets. We have considered below a heavy oil (viscosity 650-750 mPa.s) containing one of the three surfactants: a nonionic surfactant or a cationic surfactant or …

Soil Fatigue From Induced Seismicity, Merissa L. Zuzulock, Oliver Denzil S. Taylor, Norbert H. Maerz

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Induced seismicity and the effects on civil engineering systems are not completely understood and infrequently studied. One specific area that is not well known is soil fatigue which includes factors such as understanding the natural conditions of the subsurface as well as operational parameters under short duration impulse loads. With the increase of Geo induced seismic activity, soil fatigue becomes of greater concern to structures in the vicinity of this seismic load. The foundations of these structures can be affected by impulse loads which can ultimately cause failure. The lack of quantitative data puts the reliability of these civil engineering …

A New Type Of Crumb Rubber Asphalt Mixture: A Dry Process Design And Performance Evaluation, Feng Ma, Jiasheng Dai, Zhen Fu, Jenny Liu, Wenhao Dong, Zhen Huang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

To obtain a crumb rubber asphalt mixture with excellent performance, this study combined trans-polyoctenamer rubber (TOR), crumb rubber, and other additives to establish a new type of crumb rubber (CRT). The objective of this study was to design and evaluate the road performance of the new type of crumb rubber asphalt mixture (CRTAM) with a skeleton dense texture through a dry process. First, the skeleton intrusion compact volume method was used to optimize the grading of coarse and fine aggregates, and the design of the CRTAM gradation was carried out through the same and unequal volume replacement grading method. Then, …

Revealing The Hidden Hyperfine Interactions In Ε-Iron, Dimitrios Bessas, Ilya Sergueev, Konstantin Glazyrin, Cornelius Strohm, Ilya Kupenko, Daniel G. Merkel, Gary J. Long, Fernande Grandjean, Aleksandr I. Chumakov, Rudolf Ruffer

Chemistry Faculty Research & Creative Works

Herein, evidence for the long-sought finite hyperfine interaction in the high-pressure hexagonal close-packed ε-iron is gained through synchrotron radiation perturbed angular correlation spectroscopy. This method yields an energy splitting of 3.5(5)neV between the m_Ie= ± 1/2 and m_Ie = ± 3/2 nuclear sublevels of the iron-57 14.412-keV nuclear excited state at 30(1)GPa and room temperature. This energy splitting is related to a nuclear quadrupole hyperfine interaction with an electric field gradient of eq=1.2(2) x 10¹⁶V/cm². However, there is still a possibility that the splitting of the iron-57 nuclear levels is related …

Coordinated Container Migration And Base Station Handover In Mobile Edge Computing, Mao V. Ngo, Tie Luo, Hieu T. Hoang, Q. S. Tony Quek

Computer Science Faculty Research & Creative Works

Offloading computationally intensive tasks from mobile users (MUs) to a virtualized environment such as containers on a nearby edge server, can significantly reduce processing time and hence end-to-end (E2E) delay. However, when users are mobile, such containers need to be migrated to other edge servers located closer to the MUs to keep the E2E delay low. Meanwhile, the mobility of MUs necessitates handover among base stations in order to keep the wireless connections between MUs and base stations uninterrupted. In this paper, we address the joint problem of container migration and base-station handover by proposing a coordinated migration-handover mechanism, with …

Festivals As A Sustainable Development Tool: Case Study Of Teriberka, Russia, Maria Monakhova

Dissertations and Theses @ UNI

Sustainable development refers to positive economic, social, and environment changes brought both locally and globally, creating a better world for individuals and future generations. Sustainable development in the Arctic shares the same approach, yet the smallness and remoteness of the Arctic regions often present a challenge to its implementation (Larsen & Huskey, 2015). I believe that the remarkable beauty, culture, history, and geography of these territories may generate positive returns for sustainable development through the organization of festivals. This paper examines the Teriberka festival taking place in a small same-name village in the Russian Arctic. The questions raised are what …

3d Printing Technology On Spare Parts Business Supply Chain Management: A Case Study In Appliance Industry, Salih Boysan

Dissertations and Theses @ UNI

This study investigates the effects of using Additive Manufacturing (AM), also known as 3D printing, to produce spare parts within the supply chain of an appliance manufacturing company.

This research is based on an analysis of the operation of a spare parts business of an appliance manufacturing company. This research study used real data to investigate the feasibility of using 3D printing to reduce complexity in the spare parts division in terms of supplier rationalization, inventory reduction, and total cost of ownership. The research method used two scenarios: one where manufacturing spare parts traditionally was the baseline model and the …

Introduction: Intelligent Entertainment: Shaping Policies On The Algorithmic Generation And Regulation Of Creative Works, Hannibal Travis

FIU Law Review

No abstract provided.

Temperamental Or Transient As A Tesseract? Analyzing Process Patent Eligibility Post-Alice, Dr. Johanna K. Dennis

FIU Law Review

No abstract provided.

Cracking The Code: Computer Code As Pure Speech And Its First Amendment Implications On The 3d Printed Firearms Controversy, Brian E. Heckmann

FIU Law Review

No abstract provided.

A Novel Data-Driven Scheme For The Ship Wake Identification On The 2-D Dynamic Sea Surface, Yanming Zhang, Lijun Jiang

Electrical and Computer Engineering Faculty Research & Creative Works

Because the ship wake spreads into an area much larger than that of the ship hull in the sea surface, it has been widely used in the ship detection. However, due to the complex sea wave motion and the high sea state, the ship wake detection is still a challenging task. In this paper, we propose a novel data-driven method based on dynamic mode decomposition (DMD) to detect, reconstruct, and locate the Kelvin wake on the two-dimensional dynamic sea surface. Through the proposed method, the sea's dynamic characteristics including the oscillation frequency and decay/growth rate of ship wakes and the …

Laboratory Schools Annual Report, 2019-2020, Laboratory Schools, Illinois State University

Annual Reports – Laboratory Schools

Illinois State University Laboratory Schools annual report

Associations Between Dietary Flavonoids And Retinal Microvasculature In Older Adults, Bamini Gopinath, Gerald Liew, Joshua Lewis, Nicola P. Bondonno, Catherine P. Bondonno, George Burlutsky, Jonathan M. Hodgson, Paul Mitchell

Research outputs 2014 to 2021

Purpose: In this study, we assessed whether there are independent associations between dietary total flavonoid intake and major flavonoid classes with retinal arteriolar and venular calibre.

Methods: Blue Mountains Eye Study participants aged 49+ years who had complete data on diet and retinal vessel measures were analysed (n = 2821). Dietary intake was assessed using a semi-quantitative Food-Frequency Questionnaire (FFQ). Flavonoid content of foods in the FFQ was estimated using the US Department of Agriculture Flavonoid, Isoflavone and Proanthocyanidin databases. Fundus photographs were taken and retinal vascular calibre was measured using validated computer-assisted techniques. The associations of intake of …

A Solar‐Driven Membrane‐Based Water Desalination/Purification System, Abdellah Shafieian Dastjerdi

Theses: Doctorates and Masters

Lack of fresh water has turned into one of the major challenges of the world in the present century. Desalination of brackish or seawater has been proven to be one of the best solutions to cope with this global challenge. Among all the desalination methods, Membrane Distillation (MD) is well known as a cost effective and profitable technology for treating saline water. However, higher energy consumption compared to other separation techniques has been reported as MD’s main drawback. That is why the application of solar energy to provide the thermal energy requirement of MD modules has been the focal point …

Exploring Leadership And Research In Nurse Practitioner Roles Across Australia And Ireland: A Mixed-Methods Study, Mary Ryder

Theses: Doctorates and Masters

Introduction

The Nurse Practitioner role is recognised as the highest level of clinical nursing. Leadership and research are identified as core attributes for Nurse Practitioners in the regulatory frameworks. There is an expectation that as clinical leaders, Nurse Practitioners have the ability to transform healthcare delivery within their specialist area of practice.

Background

The voice of Nurse Practitioners is limited in the current literature related to how they view their leadership contribution to Nursing. There has been some criticism in the evidence to date related to volume, consistency and transferability of Nurse Practitioner research. However, there is a shortage of …

A Study Into The Effects Of Spray And Jet Characteristics On Flash Evaporation System, Farshid Fathinia

Theses: Doctorates and Masters

Low temperature flash evaporation desalination is a separation system that isolates liquids from other materials when seawater or any fluid undergoes evaporation. Extreme flash evaporation occurs when a low heated liquid is injected into the vacuum area, where the pressure is far below the saturated pressure of the liquid entering the area. This approach of flash evaporation is a key part of this type of system. It has a great potential to develop and improve the implementation of low thermal desalination plants but requires more specific study. Further analysis shows that previous investigations have not given a comprehensive insight into …

The Integration Of Pumped Hydro Storage Systems Into Pv Microgrids In Rural Areas, Navid Mousavi

Theses: Doctorates and Masters

Photovoltaic (PV) systems are popular in rural areas because they provide low cost and clean electricity for homes and irrigation systems. The primary challenge of PV systems is their intermittent nature. The typical solution is storing energy in batteries; however, they are expensive and possess a short lifespan. This research proposes a new type of pumped hydro storage (PHS) which can be implemented as an alternative to batteries. The components of the system are modelled to consider losses of the system accurately. The mathematic model developed in this project assists the management system to make more efficient decisions. The proposed …

Wildfire Suppression – An International Analysis Of Operations, Strategy And Firefighter Safety, Greg Peter Penney

Theses: Doctorates and Masters

Wildfire suppression remains an inherently dangerous yet increasingly frequent task for fire services throughout Australia and the world. Each year firefighters from career and volunteer agencies respond to wildfires that impact the urban interface. When such an event occurs during a period of intense fire behaviour the conditions are often incompatible with life for persons either caught in the open or those seeking refuge in a vehicle. In order to improve firefighter safety and operational effectiveness at the rural urban interface (RUI) during landscape scale wildfires, this dissertation serves to examine critical components of wildfire response, most notably wildfire suppression …

Local Binary Pattern Based Algorithms For The Discrimination And Detection Of Crops And Weeds With Similar Morphologies, Vi Nguyen Thanh Le

Theses: Doctorates and Masters

In cultivated agricultural fields, weeds are unwanted species that compete with the crop plants for nutrients, water, sunlight and soil, thus constraining their growth. Applying new real-time weed detection and spraying technologies to agriculture would enhance current farming practices, leading to higher crop yields and lower production costs. Various weed detection methods have been developed for Site-Specific Weed Management (SSWM) aimed at maximising the crop yield through efficient control of weeds. Blanket application of herbicide chemicals is currently the most popular weed eradication practice in weed management and weed invasion. However, the excessive use of herbicides has a detrimental impact …

Applying Mobile Augmented Reality (Ar) To Teach Interior Design Students In Layout Plans: Evaluation Of Learning Effectiveness Based On The Arcs Model Of Learning Motivation Theory, Yuh-Shihng Chang, Kuo-Jui Hu, Cheng-Wei Chiang, Artur Lugmayr

Research outputs 2014 to 2021

In this paper we present a mobile augmented reality (MAR) application supporting teaching activities in interior design. The application supports students in learning interior layout design, interior design symbols, and the effects of different design layout decisions. Utilizing the latest AR technology, users can place 3D models of virtual objects as e.g., chairs or tables on top of a design layout plan and interact with these on their mobile devices. Students can experience alternative design decision in real-time and increases the special perception of interior designs. Our system fully supports the import of interior deployment layouts and the generation of …

Riverine Biota As Environmental Indicators Of Artisanal Small-Scale And Large-Scale Gold Mining Impacts On Riverine Ecosystems In Brong Ahafo Region, Ghana, K. F. Macdonald, M. Lund, E. Van Etten

Research outputs 2014 to 2021

A study on two adjacent small ephemeral river systems in the upper Tano River Basin in Brong Ahafo, Ghana; one impacted by ASGM and the other by a modern large gold mining (LSM), showed that impacts of mining on river sediment and water quality and quantity were reflected in the macroinvertebrate and microbial communities. This study investigated the impacts of ASGM on the ecology of the Surow River and that of a large-scale mining (LSM, the Ahafo mine) on the Subri River between February 2013 and April 2014 Macroinvertebrate communities responded to the shift in river water and sediment qualities, …

Geographical Disparities In Screening And Cancer- Related Health Behaviour, Belinda Goodwin, Arlen K. Rowe, Fiona Crawford-Williams, Peter Baade, Suzanne K. Chambers, Nicholas Ralph, Joanne F. Aitken

Research outputs 2014 to 2021

This study aimed to identify whether cancer-related health behaviours including participation in cancer screening vary by geographic location in Australia. Data were obtained from the 2014–2015 Australian National Health Survey, a computer-assisted telephone interview that measured a range of health-related issues in a sample of randomly selected households. Chi-square tests and adjusted odds ratios from logistic regression models were computed to assess the association between residential location and cancer-related health behaviours including cancer screening participation, alcohol consumption, smoking, exercise, and fruit and vegetable intake, controlling for age, socio-economic status (SES), education, and place of birth. The findings show insufficient exercise, …

Integration Of Heat Pipe Solar Water Heating Systems With Different Residential Households: An Energy, Environmental, And Economic Evaluation, Abdellah Shafieian, Mehdi Khiadani

Research outputs 2014 to 2021

This study presents a detailed methodology for evaluating the energy, environmental, and economic contributions of heat pipe solar water heating (HPSWH) systems in various households. The hot water consumption patterns of Perth residents in Australia in one, two, and four-occupant houses are extracted in hourly basis throughout a year. The annual performance of the system is evaluated based on parameters such as saved energy, solar fraction, avoided CO₂ emission, saved money, and payback period. Moreover, an experimental rig is designed, manufactured, and tested. The results show that the contribution of the solar system in meeting the hot water demand …

Cyber-Security Constrained Placement Of Facts Devices In Power Networks From A Novel Topological Perspective, Hossein Parastvand, Octavian Bass, Mohammad A. S. Masoum, Airlie Chapman, Stefan Lachowicz

Research outputs 2014 to 2021

Optimal placement of flexible AC transmission systems (FACTS) devices and the cyber-security of associated data exchange are crucial for the controllability of wide area power networks. The placement of FACTS devices is studied in this paper from a novel graph theoretic perspective, which unlike the existing approaches, purely relies on topological characteristics of the underlying physical graphs of power networks. To this end, the maximum matching principle (MMP) is used to find the set of required FACTS devices for the grid controllability. In addition, the cyber-security of the most critical data related to the FACTS controllers is guaranteed by introducing …