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2021

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Impact Of Blended Salt Anti-Icers/Deicers On Properties Of Asphalt Binders, Nurudeen A. Abidoye Jan 2021

Impact Of Blended Salt Anti-Icers/Deicers On Properties Of Asphalt Binders, Nurudeen A. Abidoye

College of Graduate Studies: Theses & Dissertations

Anyone who has ever attempted to remove a layer of ice from a roadway or sidewalk by plowing or shoveling knows it is no easy task when the ice is firmly bonded to the asphalt/concrete surface. Winter anti-icing/deicing operations are moral choices that mankind has made to combat winter storms. This research is aimed at evaluating the macro and nano structural impacts of (anti-icing/de-icing) salt on aged and unaged asphalt binders. The macro structural impacts focused on the rheological and creep properties, and the nano structural impacts focused on the surface topography, adhesion force, and modulus of asphalt binders. Rheological …

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Numerical Approximation Of Lyapunov Exponents And Its Applications In Control Systems, Nakita K. Andrews Jan 2021

Numerical Approximation Of Lyapunov Exponents And Its Applications In Control Systems, Nakita K. Andrews

College of Graduate Studies: Theses & Dissertations

The progression of state trajectories with respect to time, and its stability properties can be described by a system of nonlinear differential equations. However, since most nonlinear dynamical systems cannot be solved by hand, one must rely on computer simulations to observe the behavior of the system. This work focuses on chaotic systems. The Lyapunov Exponent (LE) is frequently used in the quantitative studies of a chaotic system. Lyapunov exponents give the average rate of separation of nearby orbits in phase space, which can be used to determine the state of a system, e.g. stable or unstable. The objective of …

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The Devaluation Of Career Technical Education (Cte) By The Graduates Of Wonderwood High School, Jason J. Weiss Jan 2021

The Devaluation Of Career Technical Education (Cte) By The Graduates Of Wonderwood High School, Jason J. Weiss

College of Graduate Studies: Theses & Dissertations

In Georgia, high school graduates are expected to be college and career ready, however due to recent educational legislative changes the focus has been placed on being college ready. These modifications have led to a low number of graduates completing a Career Technical Education (CTE) pathway as well as a low number of graduates passing their CTE End-of-Pathway assessments and earning industry credentials. To assist in determining the factors that have led to the devaluation of CTE by Georgia graduates, a critical qualitative inquiry study was conducted on a sample of 13 graduates from Wonderwood High School, in South Heights, …

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Lstm-Based Model For Human Brain Decisions Using Eeg Signals Analysis, Lorela Bano Jan 2021

Lstm-Based Model For Human Brain Decisions Using Eeg Signals Analysis, Lorela Bano

College of Graduate Studies: Theses & Dissertations

As machine learning models become more sophisticated, and biometric data becomes more readily available through new non-invasive technologies, it becomes increasingly possible to gain access to interesting biometric data that could revolutionize Human Computer Interaction. In this research, we propose a framework to assess and quantify human preference (like or dislike) on presenting various external visual stimuli. Our framework relies on an Long Short-Term Memory (LSTM) Recurrent Neural Network (RNN) based model and on electroencephalogram (EEG) signals analysis to predict Like or Dislike preference of human subjects when presented with various marketing images.

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Analysis Of Miniaturized, Circularly Polarized Antennas For Bidirectional Propagation, Mason C. Moore Jan 2021

Analysis Of Miniaturized, Circularly Polarized Antennas For Bidirectional Propagation, Mason C. Moore

College of Graduate Studies: Theses & Dissertations

Size reduction is necessary to fit the recent demand for small sized communication systems in consumer electronics. Wireless communication systems rely on antennas for long range transmission of signals, so size reduced antennas have been sought after in recent years. Also, not many antennas are designed for use in bidirectional scenarios like subways, tunnels, bridges, etc. Three sized reduced antennas with circular polarization are presented for use in bidirectional communication systems. An electrically small pattern reconfigurable array, an electrically small two-sided printed cross dipole, and a size reduced printed wideband antenna are introduced within this thesis. All antennas’ results are …

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A Semi-Active Vibration Isolator For 3d Printing On Shipboard, Mohammad Z. Shahabuddin Jan 2021

A Semi-Active Vibration Isolator For 3d Printing On Shipboard, Mohammad Z. Shahabuddin

College of Graduate Studies: Theses & Dissertations

In the recent years, additive manufacturing (AM) (aka 3D printing)-has become a viable alternative to traditional manufacturing due to its unique advantages, such as enabling the fabrication of complex geometries at reduced weight and costs as well as allowing on-site fabrication for maintenance and repair. One specific application area of the AM is the navy vessels. During extended voyages, the navy vessels likely require the convenience of on-site fabrication of the malfunctioned parts. However, the shipboard equipment suffers from a broad range of external excitations arising not only from the waves but also from the vessel’s engines, which …

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Reclamation Of Fused Silica From Investment Shells Used For Casting Steel, Samuel L. Holt Jan 2021

Reclamation Of Fused Silica From Investment Shells Used For Casting Steel, Samuel L. Holt

College of Graduate Studies: Theses & Dissertations

Fused silica is widely used for investment casting shell molds. Fused silica shells are discarded after being used for casting one time. This is due to the transformation of fused silica to beta cristobalite above 1652℉ (900℃). To reduce cost and waste of investment casting foundries, this study is exploring a method to inhibit transformation of fused silica and reclaim it from high temperature investment casting shells. This research has employed firing to minimalize fused silica transformation to cristobalite. The phase transformation is minimalized due to sintering and coarsening of the particles during firing. Coarsening reduces surface area to volume …

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Evaluation Of Supervised Deep-Learning For Improved Pneumonia Diagnosis, Andrew Kalaani Jan 2021

Evaluation Of Supervised Deep-Learning For Improved Pneumonia Diagnosis, Andrew Kalaani

College of Graduate Studies: Theses & Dissertations

Pneumonia is one of the leading causes of infections in the lung area and deaths worldwide. The mortality rate is 24.8% for patients over 70 years of age due to other health complications present along with it. In least fortunate countries, pneumonia can often times go untreated because of how cost extensive it is to diagnose, especially severe cases that cannot be seen by a plain X-ray. Other scanning methods can find the lung abnormality but are time-extensive and not cost effective. An autonomous approach however can help aid diagnosing pneumonia with a plain X-ray scan due to the structural …

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Mechanical Properties Of Nanomodified Hybrid Gfrp Composite Materials, Micah Rop Kimutai Jan 2021

Mechanical Properties Of Nanomodified Hybrid Gfrp Composite Materials, Micah Rop Kimutai

College of Graduate Studies: Theses & Dissertations

The mechanical behavior of the nanomodified hybrid epoxy matrix was investigated in glass fiber reinforced plastics (GFRP). In this study, five nanocomposites enriched with as received halloysite, nanomer I.28E, HNT-APTES, and the hybrid combinations of the two HNTs with the nanomer I.28E were successfully fabricated. To evaluate the effects and morphological characteristics of the individual fillers and the hybrid configurations on the epoxy resin matrix, TGA, DSC, and DMA were analyzed. To understand the effect of the five configurations on the neat GFRP laminate, mode I interlaminar fracture toughness, tensile, and vibration properties were investigated. Electron microscopy testing techniques were …

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Current Status Of Design And Construction Of Piles With A Pilot Hole On Rock, Charles C. Crowner Jan 2021

Current Status Of Design And Construction Of Piles With A Pilot Hole On Rock, Charles C. Crowner

College of Graduate Studies: Theses & Dissertations

Driven piles at project sites get their load bearing capacity from side friction along the driven lengths as well as from end resistance. Pilot holes is a pile driving assistance method used to aid driving displacement piles through hard/ dense layers and rock. These pilot holes can be a size smaller or larger than the pile that is to be installed. The pilot hole is first drilled down to a specific depth. The use of a pilot hole reduces the “end bearing” and “side resistance” within the drilled zone and aids the driving of the pile. This process also complicates …

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Prevalence Of Asymptomatic P. Falciparum Gametocyte Carriage Among School Children In Mbita, Western Kenya And Assessment Of The Association Between Gametocyte Density, Multiplicity Of Infection And Mosquito Infection Prevalence., Victor A. Mobegi, Jeremy K. Herren, Abdoulie O. Touray, Fred Wamunyokoli, Hellen Butungi Jan 2021

Prevalence Of Asymptomatic P. Falciparum Gametocyte Carriage Among School Children In Mbita, Western Kenya And Assessment Of The Association Between Gametocyte Density, Multiplicity Of Infection And Mosquito Infection Prevalence., Victor A. Mobegi, Jeremy K. Herren, Abdoulie O. Touray, Fred Wamunyokoli, Hellen Butungi

All Peer-Reviewed Publications

Background: Asymptomatic Plasmodium falciparum gametocyte carriers are reservoirs for sustaining transmission in malaria endemic regions. Gametocyte presence in the host peripheral blood is a predictor of capacity to transmit malaria. However, it does not always directly translate to mosquito infectivity. Factors that affect mosquito infectivity include, gametocyte sex-ratio and density, multiplicity of infection (MOI), and host and vector anti-parasite immunity. We assess the prevalence of gametocyte carriage and some of its associated risk factors among asymptomatic schoolchildren in Western Kenya and to further analyse the association between gametocyte density, multiplicity of infection (MOI) and mosquito infection prevalence. Methods: P. falciparum …

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Τhe Complete Mitochondrial Genomes Of Ceratitis Rosa And Ceratitis Quilicii, Members Of The Ceratitis Far Species Complex (Diptera: Tephritidae), Elena Drosopoulou, Aristi Damaskou, Angeliki Markou, Sunday Ekesi, Fathiya Khamis, Aruna Manrakhan, Antonios A. Augustinos, George Tsiamis, Kostas Bourtzis Jan 2021

Τhe Complete Mitochondrial Genomes Of Ceratitis Rosa And Ceratitis Quilicii, Members Of The Ceratitis Far Species Complex (Diptera: Tephritidae), Elena Drosopoulou, Aristi Damaskou, Angeliki Markou, Sunday Ekesi, Fathiya Khamis, Aruna Manrakhan, Antonios A. Augustinos, George Tsiamis, Kostas Bourtzis

All Peer-Reviewed Publications

Ceratitis FAR is an African species complex comprising insect pests of great economic interest and obscure species limits. Here, we report the mitochondrial genomes of two members of the FAR complex, namely Ceratitis rosa and the recently characterized Ceratitis quilicii. A phylogenetic analysis based on PCGs of available Tephritidae mitogenomes is presented. The current mitochondrial sequences from the FAR complex could contribute toward the resolution of phylogenetic relationships and species limits within this taxonomically challenging group, which is also an important issue for the development of environment-friendly and species-specific control methods, such as the sterile insect technique (SIT).

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The Ethiopian Staple Food Crop Enset (Ensete Ventricosum) Assessed For The First Time For Resistance Against The Root-Lesion Nematode Pratylenchus Goodeyi, Selamawit A. Kidane, Beira H. Meressa, Solveig Haukeland, Anne Kathrine Hvoslef-Eide, Danny L. Coyne Jan 2021

The Ethiopian Staple Food Crop Enset (Ensete Ventricosum) Assessed For The First Time For Resistance Against The Root-Lesion Nematode Pratylenchus Goodeyi, Selamawit A. Kidane, Beira H. Meressa, Solveig Haukeland, Anne Kathrine Hvoslef-Eide, Danny L. Coyne

All Peer-Reviewed Publications

Summary – Pratylenchus goodeyi appears to be the most prevalent nematode pest of enset in Ethiopia, where it can occur in extremely high densities. However, the damage to yield or how different enset cultivars react to the nematode has yet to be determined. The current study therefore sought to establish a first assessment of these reactions by enset to P. goodeyi infection. Determining pest-resistant cultivars is an important task in developing management strategies. Our study evaluated nine enset cultivars to establish host response and identify potential sources of resistance. In addition, the pathogenicity of P. goodeyi was assessed on three …

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A Framework For Understanding And Establishing An Effective Information Security Culture, Alaa Tolah Jan 2021

A Framework For Understanding And Establishing An Effective Information Security Culture, Alaa Tolah

School of Engineering, Computing and Mathematics Theses

A challenge facing organisations is information security, as security breaches pose a serious threat to sensitive information. Organisations face security risks in relation to their information assets, which also stems from their own employees. Individuals who work in organisations can cause serious risks, even though investments are generally provided to improve security control measures and other devices. Organisations need to focus on employee actions and behaviour to limit security failures, as they aim to establish effective security culture with employees acting as a natural safeguard for information assets. However, the literature review highlights the lack of prior research models that …

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An Analysis Of How Culture Influences The Arbitration Process Used To Resolve Disputes On Construction Projects In Saudi Arabia, Sultan Alsofyani Jan 2021

An Analysis Of How Culture Influences The Arbitration Process Used To Resolve Disputes On Construction Projects In Saudi Arabia, Sultan Alsofyani

School of Engineering, Computing and Mathematics Theses

This study aimed to investigate links between contractual disputes and project cultures in the construction industry of Saudi Arabia. Contractual disputes are those that arise from the contractual relationships binding parties to a particular project, which may broadly be categorised as being between an employer/client and a contractor or between a main contractor and a subcontractor/supplier. Project cultures describe the values, principles, beliefs and behaviours that parties bring into a contractual agreement. For this thesis, the author explored the extent to which the local culture of Saudi Arabia shaped and influenced contractual construction project disputes. The idea was to deepen …

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Determination Of Slaughter And Carcass Traits In Male Turkish Anatolian Buffaloes Atdifferent Slaughter Weights, Zafer Ulutaş, Azi̇z Şahi̇n, Yüksel Aksoy, Emre Uğurlutepe Jan 2021

Determination Of Slaughter And Carcass Traits In Male Turkish Anatolian Buffaloes Atdifferent Slaughter Weights, Zafer Ulutaş, Azi̇z Şahi̇n, Yüksel Aksoy, Emre Uğurlutepe

Turkish Journal of Veterinary & Animal Sciences

Nowadays, deficits in red meat resources in Turkey are caused by the import of red meat from different countries. Anatolian buffaloes used in this research are a species that can contribute to red meat production in Turkey. This study was performed to determine the slaughter and carcass traits of Anatolian buffaloes at different slaughter weights. Twenty weaned male Anatolian buffalo calves of about 5 months old, at an average live weight of 100 kg, were used as the animal specimen in the present study. The calves were fed with 30:70 roughage (alfalfa hay = 18.07% crude protein, 2186.90 kcal kg$^{-1}$ …

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Effect Of Light Sources On Productivity, Welfare Aspects, And Economic Evaluation Ofcommercial Layers, Fazal Raziq, Jibran Hussain, Athar Mahmud, Khalid Javed Jan 2021

Effect Of Light Sources On Productivity, Welfare Aspects, And Economic Evaluation Ofcommercial Layers, Fazal Raziq, Jibran Hussain, Athar Mahmud, Khalid Javed

Turkish Journal of Veterinary & Animal Sciences

The present study was aimed to evaluate the influence of incandescent, fluorescent, and light emitting diode (LED) lights on the productive efficiency and economic aspects of laying hens. For this, 216 laying hens were distributed into three groups of light sources with six replicates each. Each replicate consisted of 12 birds. The data were analyzed in SAS 9.1 (SAS InstituteInc., Cary, NC, USA) by applying one-way ANOVA technique, and significant means were compared through least significant difference test. In the present study, LED light significantly improved the body weight, body weight gain, percentage of egg production, FCR per dozen and …

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Dried Tomato Pomace In Rabbit Nutrition: Effects On Carcass Characteristics And Meat Quality, Nouha Grioui, Hager Boukhris, Chokri Damergi, Wafa Hajji, Hamadi Riahi, Manef Abderrabba, Taha Najar, Mondher Mejri Jan 2021

Dried Tomato Pomace In Rabbit Nutrition: Effects On Carcass Characteristics And Meat Quality, Nouha Grioui, Hager Boukhris, Chokri Damergi, Wafa Hajji, Hamadi Riahi, Manef Abderrabba, Taha Najar, Mondher Mejri

Turkish Journal of Veterinary & Animal Sciences

This study was conducted to assess the effect of dried tomato pomace (DTP) feeding on the carcass characteristics and the quality of the meat of growing rabbits. For this purpose, 54 weaned rabbits (40 days old) were divided into three equal groups and fed isoproteic and isoenergetic diets. The first group was the control group (CON), while the other two groups were fed 10 (DTP-10), and 20 (DTP-20) percent DTP for 6 weeks. Eighty-three-day-old rabbits were slaughtered then, the carcass characteristics, mechanical and sensorial tenderness of the meat were determined. Rabbits fed with DTP-10 had the highest final weight at …

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Immunohistological Effects Of Transforming Growth Factor-Ss Via Platelet-Rich Plasma Onsegmental Bone Defects: An Animal Study, Azi̇z Ati̇k, Serdar Sargin, Gökhan Meri̇ç, Cengi̇z Ceylan Jan 2021

Immunohistological Effects Of Transforming Growth Factor-Ss Via Platelet-Rich Plasma Onsegmental Bone Defects: An Animal Study, Azi̇z Ati̇k, Serdar Sargin, Gökhan Meri̇ç, Cengi̇z Ceylan

Turkish Journal of Veterinary & Animal Sciences

Bone healing is a different and unique process that results in complete bone tissue, rather than ending in scar formation. However, more significant bone defects may fail to regenerate and forms scary granulomatous tissue. This study aimed to investigate the efficacy of transforming growth factor-ß (TGF - ß) via platelet rich plasma (PRP) in rabbit tibia bones with segmental bone defects by radiological and immunohistological methods. Tibial segmental defects were performed to adult New Zealand rabbits (n = 10) on both legs. 0.5 mL of PRP was administered to the defect zone on one leg (PRP group), while the other …

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The Morphological And Morphometric Characteristics Of Alabadem Pigeons, Evren Erdem, Fatma Tüli̇n Özbaşer, Eser Kemal Gürcan, Mehmet İhsan Soysal Jan 2021

The Morphological And Morphometric Characteristics Of Alabadem Pigeons, Evren Erdem, Fatma Tüli̇n Özbaşer, Eser Kemal Gürcan, Mehmet İhsan Soysal

Turkish Journal of Veterinary & Animal Sciences

This study aimed to determine the morphological and morphometric characteristics of Alabadem pigeons, which are grown as ornamental pigeons in Edirne province, and to determine mutual traits with other indigenous pigeon breeds in Turkey by comparing with previous studies. Body weight (P < 0.001), head length (P < 0.01), head width (P < 0.05), beak length (P < 0.001), and tarsus diameter (P < 0.05) of age group III were higher than those of other age groups; however, the wingspan of age group II was greater than that of other age groups in Alabadem pigeon. Compared to other indigenous genotypes in Turkey, the Alabadem pigeon is a small-sized genotype. Alabadem pigeons were similar to Edremit butterfly pigeons and Thracian tumbler pigeons in terms of crested and blackeyed pigeons. On the other hand, the irregularly shaped mark (almond) on the head in Alabadem pigeons was similar to the wide-long irregular shaped mark on the neck of Edremit butterfly pigeons. Some basic plumage colors (black, yellow, and red) and intermediate colors (chickpea and scarlet) were identical to Alabadem pigeons and Thrace roller pigeons. Since Alabadem pigeons have many mutual characteristics with Edremit butterfly pigeons and Thracian roller pigeons, genetic studies may be recommended to determine the degree of relationship among these breeds.

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A Systems Perspective In Examining Industry Clusters: Case Studies Of Clusters In Russia And India, Anton Klarin, Rifat Sharmelly, Yuliani Suseno Jan 2021

A Systems Perspective In Examining Industry Clusters: Case Studies Of Clusters In Russia And India, Anton Klarin, Rifat Sharmelly, Yuliani Suseno

Research outputs 2014 to 2021

This article explores an examination of industry clusters from a systems perspective. We analyze Russia’s pharmaceutical clusters and India’s automobile clusters in terms of the systems concepts of holism, emergence, and open systems. We further consider the aspects of human capital investment and the availability of professional labor, infrastructure, private–public sector collaboration, support for funding and commercialization, as well as innovation corporate culture, when examining the institutional pillars supporting the development and growth of industry clusters within the national innovation ecosystems. The findings illustrate how industry clusters can be viewed from a systems perspective. We also highlight how the institutional …

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Investigating Auditory Electrophysiological Measures Of Participants With Mild Cognitive Impairment And Alzheimer's Disease: A Systematic Review And Meta-Analysis Of Event-Related Potential Studies, Hadeel Y. Tarawneh, Wilhelmina H. A. M. Mulders, Hamid R. Sohrabi, Ralph N. Martins, Dona M. P. Jayakody Jan 2021

Investigating Auditory Electrophysiological Measures Of Participants With Mild Cognitive Impairment And Alzheimer's Disease: A Systematic Review And Meta-Analysis Of Event-Related Potential Studies, Hadeel Y. Tarawneh, Wilhelmina H. A. M. Mulders, Hamid R. Sohrabi, Ralph N. Martins, Dona M. P. Jayakody

Research outputs 2014 to 2021

Background: Objectively measuring auditory functions has been proposed as an avenue in differentiating normal age-related cognitive dysfunction from Alzheimer's disease (AD) and its prodromal states. Previous research has suggested auditory event-related potentials (AERPs) to be non-invasive, cost-effective, and efficient biomarkers for the diagnosis of AD. Objective: The objective of this paper is to review the published literature on AERPs measures in older adults diagnosed with AD and those at higher risk of developing AD, i.e., mild cognitive impairment (MCI) and subjective cognitive decline. Methods: The search was performed on six major electronic databases (Ovid MEDLINE, OVID EMBASE, PsycINFO, PubMed, Scopus, …

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Follow The Leader: Child-Led Inquiries To Develop Science Learning Of Young Children, Pauline Roberts Jan 2021

Follow The Leader: Child-Led Inquiries To Develop Science Learning Of Young Children, Pauline Roberts

Research outputs 2014 to 2021

Science education in the early years has been found to be lacking when compared to other content areas, specifically numeracy and literacy. It has been suggested that this lack of opportunity for young children to learn science is due to educator’s lack of confidence to teach science, fuelled by concerns regarding a reduced understanding of science concepts. For young children, however, science is everywhere and is embedded in all aspects of their lives as they explore and interact to make sense of the world around them. Given this natural connection to science, it is important for educators to notice and …

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The Potential Of Involving Communities To Enhance Stem Education, Paula Mildenhall, Bronwen Cowie Jan 2021

The Potential Of Involving Communities To Enhance Stem Education, Paula Mildenhall, Bronwen Cowie

Research outputs 2014 to 2021

By engaging students in everyday issues and events, STEM education can contribute to the development of citizens who are equipped to make the world a better place. However, students’ STEM learning with this focus requires teachers to identify age and context appropriate issues. Student investigation of local issues and events can be motivating for students. Their learning can benefit from involvement with community members who input their knowledge and ideas. Students can contribute ideas and actions to the community, especially when there is a two-way exchange of information from the community to students and students to the community. In this …

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A Secured Privacy-Preserving Multi-Level Blockchain Framework For Cluster Based Vanet, A. F.M.Suaib Akhter, Mohiuddin Ahmed, A. F.M.Shahen Shah, Adnan Anwar, Ahmet Zengin Jan 2021

A Secured Privacy-Preserving Multi-Level Blockchain Framework For Cluster Based Vanet, A. F.M.Suaib Akhter, Mohiuddin Ahmed, A. F.M.Shahen Shah, Adnan Anwar, Ahmet Zengin

Research outputs 2014 to 2021

© 2021 by the authors. Licensee MDPI, Basel, Switzerland. Existing research shows that Cluster-based Medium Access Control (CB-MAC) protocols perform well in controlling and managing Vehicular Ad hoc Network (VANET), but requires ensuring improved security and privacy preserving authentication mechanism. To this end, we propose a multi-level blockchain-based privacy-preserving authentication protocol. The paper thoroughly explains the formation of the authentication centers, vehicles registration, and key generation processes. In the proposed architecture, a global authentication center (GAC) is responsible for storing all vehicle information, while Local Authentication Center (LAC) maintains a blockchain to enable quick handover between internal clusters of vehicle. …

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Voltage Stability Of Power Systems With Renewable-Energy Inverter-Based Generators: A Review, Nasser Hosseinzadeh, Asma Aziz, Apel Mahmud, Ameen Gargoom, Mahbub Rabbani Jan 2021

Voltage Stability Of Power Systems With Renewable-Energy Inverter-Based Generators: A Review, Nasser Hosseinzadeh, Asma Aziz, Apel Mahmud, Ameen Gargoom, Mahbub Rabbani

Research outputs 2014 to 2021

© 2021 by the authors. The main purpose of developing microgrids (MGs) is to facilitate the integration of renewable energy sources (RESs) into the power grid. RESs are normally connected to the grid via power electronic inverters. As various types of RESs are increasingly being connected to the electrical power grid, power systems of the near future will have more inverter-based generators (IBGs) instead of synchronous machines. Since IBGs have significant differences in their characteristics compared to synchronous generators (SGs), particularly concerning their inertia and capability to provide reactive power, their impacts on the system dynamics are different compared to …

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Public Acceptance Of Indot’S Traffic Engineering Treatments And Services, Sarah E. Adsit, Theodora Konstantinou, Konstantina Gkritza, Jon D. Fricker Jan 2021

Public Acceptance Of Indot’S Traffic Engineering Treatments And Services, Sarah E. Adsit, Theodora Konstantinou, Konstantina Gkritza, Jon D. Fricker

JTRP Technical Reports

As a public agency, interacting with and understanding the public’s perspective regarding agency activities is an important endeavor for the Indiana Department of Transportation (INDOT). Although INDOT conducts a biennial customer satisfaction survey, it is occasionally necessary to capture public perception regarding more specific aspects of INDOT’s activities. In particular, INDOT needs an effective way to measure and track public opinions and awareness or understanding of a select set of its traffic engineering practices. To evaluate public acceptance of specific INDOT traffic engineering activities, a survey consisting of 1,000 adults residing within the State of Indiana was conducted. The survey …

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Use Of Recycled Asphalt, Ayanda Thembeka Ncube, Antonio Bobet Jan 2021

Use Of Recycled Asphalt, Ayanda Thembeka Ncube, Antonio Bobet

JTRP Technical Reports

The term Reclaimed Asphalt Pavement (RAP) is used to designate a material obtained from the removal of pavement materials. RAP is used across the US in multiple applications, largely on asphalt pavement layers. RAP can be described as a uniform granular non-plastic material, with a very low percentage of fines. It is formed by aggregate coated with a thin layer of asphalt. It is often used mixed with other granular materials. The addition of RAP to aggregates decreases the maximum dry unit weight of the mixture and decreases the optimum water content. It also increases the Resilient Modulus of the …

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Repair And Strengthening Of Bridges In Indiana Using Fiber Reinforced Polymer Systems: Volume 1–Review Of Current Frp Repair Systems And Application Methodologies, Jon M. Pevey, William B. Rich, Christopher S. Williams, Robert J. Frosch Jan 2021

Repair And Strengthening Of Bridges In Indiana Using Fiber Reinforced Polymer Systems: Volume 1–Review Of Current Frp Repair Systems And Application Methodologies, Jon M. Pevey, William B. Rich, Christopher S. Williams, Robert J. Frosch

JTRP Technical Reports

For bridges that are experiencing deterioration, action is needed to ensure the structural performance is adequate for the demands imposed. Innovate repair and strengthening techniques can provide a cost-effective means to extend the service lives of bridges efficiently and safely. The use of fiber reinforced polymer (FRP) systems for the repair and strengthening of concrete bridges is increasing in popularity. Recognizing the potential benefits of the widespread use of FRP, a research project was initiated to determine the most appropriate applications of FRP in Indiana and provide recommendations for the use of FRP in the state for the repair and …

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Evaluating Reserve Strength Of Girder Bridges Due To Bridge Rail Load Shedding, Yao Wang, Mirela D. Tumbeva, Ashley P. Thrall Jan 2021

Evaluating Reserve Strength Of Girder Bridges Due To Bridge Rail Load Shedding, Yao Wang, Mirela D. Tumbeva, Ashley P. Thrall

JTRP Technical Reports

This research experimentally and numerically evaluated the reserve strength of girder bridges due to bridge rail load shedding. The investigation included: (1) performing non-destructive field testing on two steel girder bridges and one prestressed concrete girder bridge, (2) developing validated finite element numerical models, and (3) performing parametric numerical investigations using the validated numerical modeling approach. Measured data indicated that intact, integral, reinforced concrete rails participate in carrying live load. Research results culminated in recommendations to evaluate the reserve strength of girder bridges due to the participation of the rail, as well as recommendations for bridge inspectors for evaluating steel …

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