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Articles 1291 - 1320 of 15207
Full-Text Articles in Physical Sciences and Mathematics
Deep Learning In The Maintenance Industry, Paulo Cesar Ribeiro Silva
Deep Learning In The Maintenance Industry, Paulo Cesar Ribeiro Silva
Doctoral
No abstract provided.
Exploring Hidden Structure Of The Nearby Universe And The Limits And Capabilities Of Two Neutral Hydrogen Surveys, Monica Sanchez Barrantes
Exploring Hidden Structure Of The Nearby Universe And The Limits And Capabilities Of Two Neutral Hydrogen Surveys, Monica Sanchez Barrantes
Physics & Astronomy ETDs
We can use the 21 cm neutral hydrogen (HI) emission line to detect galaxies in optically obscured regions, but it is also a faint line that is difficult to detect at higher redshifts. This work presents two HI surveys. The ALFAZOA Survey maps new and predicted large-scale structure across the Galactic plane, and finds a total of 217 completely new galaxies across both of the survey phases. The completeness limits for ALFAZOA Shallow and Deep are presented. Follow-up observations of confused galaxies in ALFAZOA using the VLA determine that confusion in this survey will not cause significant deviations for the …
Integrating Deep Learning And Augmented Reality To Enhance Situational Awareness In Firefighting Environments, Manish Bhattarai
Integrating Deep Learning And Augmented Reality To Enhance Situational Awareness In Firefighting Environments, Manish Bhattarai
Electrical and Computer Engineering ETDs
We present a new four-pronged approach to build firefighter's situational awareness for the first time in the literature. We construct a series of deep learning frameworks built on top of one another to enhance the safety, efficiency, and successful completion of rescue missions conducted by firefighters in emergency first response settings. First, we used a deep Convolutional Neural Network (CNN) system to classify and identify objects of interest from thermal imagery in real-time. Next, we extended this CNN framework for object detection, tracking, segmentation with a Mask RCNN framework, and scene description with a multimodal natural language processing(NLP) framework. Third, …
Actor Concurrency Bugs: A Comprehensive Study On Symptoms, Root Causes, Api Usages, And Differences, Mehdi Bagherzadeh, Nicholas Fireman, Anas Shawesh, Raffi T. Khatchadourian
Actor Concurrency Bugs: A Comprehensive Study On Symptoms, Root Causes, Api Usages, And Differences, Mehdi Bagherzadeh, Nicholas Fireman, Anas Shawesh, Raffi T. Khatchadourian
Publications and Research
Actor concurrency is becoming increasingly important in the development of real-world software systems. Although actor concurrency may be less susceptible to some multithreaded concurrency bugs, such as low-level data races and deadlocks, it comes with its own bugs that may be different. However, the fundamental characteristics of actor concurrency bugs, including their symptoms, root causes, API usages, examples, and differences when they come from different sources are still largely unknown. Actor software development can significantly benefit from a comprehensive qualitative and quantitative understanding of these characteristics, which is the focus of this work, to foster better API documentations, development practices, …
Comparison Of Management Effects On Rangelands In Western Usa And Northern Mongolia Using Remote Sensing And Gis, Temuulen Tsagaan Sankey, Keith T. Weber, Corey Moffet
Comparison Of Management Effects On Rangelands In Western Usa And Northern Mongolia Using Remote Sensing And Gis, Temuulen Tsagaan Sankey, Keith T. Weber, Corey Moffet
IGC Proceedings (1993-2023)
No abstract provided.
Application Of Forage Monitoring Technology To Track Drought Occurrences: Experiences From Eastern Africa, R. Kaitho, J. Ndung'u, G. Kariuki, M. Kingamkono, J. Gutta, E. Kebebe, P. Dyke
Application Of Forage Monitoring Technology To Track Drought Occurrences: Experiences From Eastern Africa, R. Kaitho, J. Ndung'u, G. Kariuki, M. Kingamkono, J. Gutta, E. Kebebe, P. Dyke
IGC Proceedings (1993-2023)
No abstract provided.
Gradients Of Functionality Of Australian Rangeland Landscapes: Assessing Changes Over Time With Remote Sensing, B. Price, C. Mcalpine, D. Ward, Alexander Kutt, S. Phinn
Gradients Of Functionality Of Australian Rangeland Landscapes: Assessing Changes Over Time With Remote Sensing, B. Price, C. Mcalpine, D. Ward, Alexander Kutt, S. Phinn
IGC Proceedings (1993-2023)
No abstract provided.
A New Computer Program For The Calculation Of Pasture Carrying Capacity, Andrea Pardini, F. Longhi, M. R. Mosquera Losada, A. Rigueiro Rodriguez
A New Computer Program For The Calculation Of Pasture Carrying Capacity, Andrea Pardini, F. Longhi, M. R. Mosquera Losada, A. Rigueiro Rodriguez
IGC Proceedings (1993-2023)
No abstract provided.
Preludes To Mathematical Biology Education, Timothy Comar
Preludes To Mathematical Biology Education, Timothy Comar
Annual Symposium on Biomathematics and Ecology Education and Research
No abstract provided.
Impacts Of Human Interference And Climate Variability On The Grasslands Of Kerala, K. Shadananan Nair
Impacts Of Human Interference And Climate Variability On The Grasslands Of Kerala, K. Shadananan Nair
IGC Proceedings (1993-2023)
No abstract provided.
Plant Productivity Responses To Rising Atmospheric Co2 And Warming In Semi‐Arid Grassland In Wyoming, Usa, Jack A. Morgan, Elise Pendall, D. G. Williams, D. R. Lecain, Dana M. Blumenthal, F. A. Dijkstra, F. Miglietta, Bruce A. Kimball
Plant Productivity Responses To Rising Atmospheric Co2 And Warming In Semi‐Arid Grassland In Wyoming, Usa, Jack A. Morgan, Elise Pendall, D. G. Williams, D. R. Lecain, Dana M. Blumenthal, F. A. Dijkstra, F. Miglietta, Bruce A. Kimball
IGC Proceedings (1993-2023)
No abstract provided.
Socio‐Ecological Influences On Grazier Uptake Of Seasonal Climate Forecasts On The Rangelands In Australia, Nadine A. Marshall, A. J. Ash, I. J. Gordon, C. K. Mcdonald
Socio‐Ecological Influences On Grazier Uptake Of Seasonal Climate Forecasts On The Rangelands In Australia, Nadine A. Marshall, A. J. Ash, I. J. Gordon, C. K. Mcdonald
IGC Proceedings (1993-2023)
No abstract provided.
Process‐Based Modelling Of Timothy Survival In Winter, Marcel Van Oijen, S. M. Thorsen, A. H. M. C. Schapendonk, Mats Höglind
Process‐Based Modelling Of Timothy Survival In Winter, Marcel Van Oijen, S. M. Thorsen, A. H. M. C. Schapendonk, Mats Höglind
IGC Proceedings (1993-2023)
No abstract provided.
An In Silico Approach To Enzymatic Synthesis Of Fucooligosaccharides Using Α-L-Fucosidase From Thermotoga Maritima, Emmanuel Pérez-Escalante, Luis Guillermo González-Olivares, Araceli Castañeda-Ovando, Alma Elizabeth Cruz-Guerrero, John F. Trant, Wendolyne López-Orozco, Luis Humberto Mendoza-Huizar, Sergio Alatorre-Santamaría
An In Silico Approach To Enzymatic Synthesis Of Fucooligosaccharides Using Α-L-Fucosidase From Thermotoga Maritima, Emmanuel Pérez-Escalante, Luis Guillermo González-Olivares, Araceli Castañeda-Ovando, Alma Elizabeth Cruz-Guerrero, John F. Trant, Wendolyne López-Orozco, Luis Humberto Mendoza-Huizar, Sergio Alatorre-Santamaría
Chemistry and Biochemistry Publications
Abstract: Fucooligosaccharides comprise the primary group of human milk oligosaccharides. Due to their beneficial properties, a series of synthetic methods have been proposed to obtain them. Enzy- matic methods show great promise, and α-L-fucosidase from Thermotoga maritima has emerged as a powerful catalyst for their production. Nonetheless, the enzyme’s limited substrate scope has de- layed its wider application. The present work aims to compare the relative reactivity of fucose, pNP-fucose, and ethyl-fucose, while also exploring the molecular interactions of these fucosyl-donors with the enzyme through a combination DFT and docking analysis. The HOMO-LUMO band gaps range from −7.14571 to −4.24429 …
Reactions To A Pandemic: The Coronavirus Brings Mathematicians To The Front Line, Ami Radunskaya
Reactions To A Pandemic: The Coronavirus Brings Mathematicians To The Front Line, Ami Radunskaya
Annual Symposium on Biomathematics and Ecology Education and Research
No abstract provided.
Deformed Gaussian Operators On Weighted Q-Fock Spaces, Nobuhiro Asai, Hiroaki Yoshida
Deformed Gaussian Operators On Weighted Q-Fock Spaces, Nobuhiro Asai, Hiroaki Yoshida
Journal of Stochastic Analysis
No abstract provided.
Subproduct Systems And Cartesian Systems: New Results On Factorial Languages And Their Relations With Other Areas, Malte Gerhold, Michael Skeide
Subproduct Systems And Cartesian Systems: New Results On Factorial Languages And Their Relations With Other Areas, Malte Gerhold, Michael Skeide
Journal of Stochastic Analysis
No abstract provided.
Proximity-Induced Magnetization In Graphene: Towards Efficient Spin Gating, Mihovil Bosnar, Ivor Lončarić, P. Lazić, Kirill Belashchenko, Igor Žutić
Proximity-Induced Magnetization In Graphene: Towards Efficient Spin Gating, Mihovil Bosnar, Ivor Lončarić, P. Lazić, Kirill Belashchenko, Igor Žutić
Kirill Belashchenko Publications
Gate-tunable spin-dependent properties could be induced in graphene at room temperature through the magnetic proximity effect by placing it in contact with a metallic ferromagnet. Because strong chemical bonding with the metallic substrate makes gating ineffective, an intervening passivation layer is needed. Previously considered passivation layers result in a large shift of the Dirac point away from the Fermi level, so that unrealistically large gate fields are required to tune the spin polarization in graphene (Gr). We show that a monolayer of Au or Pt used as the passivation layer between Co and graphene brings the Dirac point closer to …
A Posteriori Error Estimates For Elliptic Eigenvalue Problems Using Auxiliary Subspace Techniques, Stefano Giani, Luka Grubišić, Harri Hakula, Jeffrey S. Ovall
A Posteriori Error Estimates For Elliptic Eigenvalue Problems Using Auxiliary Subspace Techniques, Stefano Giani, Luka Grubišić, Harri Hakula, Jeffrey S. Ovall
Mathematics and Statistics Faculty Publications and Presentations
We propose an a posteriori error estimator for high-order p- or hp-finite element discretizations of selfadjoint linear elliptic eigenvalue problems that is appropriate for estimating the error in the approximation of an eigenvalue cluster and the corresponding invariant subspace. The estimator is based on the computation of approximate error functions in a space that complements the one in which the approximate eigenvectors were computed. These error functions are used to construct estimates of collective measures of error, such as the Hausdorff distance between the true and approximate clusters of eigenvalues, and the subspace gap between the corresponding true and approximate …
Characterizing Childhood And Diet In Migration Period Hungary, Kirsten A. Verostick
Characterizing Childhood And Diet In Migration Period Hungary, Kirsten A. Verostick
USF Tampa Graduate Theses and Dissertations
This project investigates children, childhood and diet of two different Migration Period (4th-8th century AD) populations, the Gepids and the Avars, in the Great Hungarian Plain. The main goal was to assess whether there are differences in treatment of children and differences in breastfeeding and weaning practices in these distinct sites and populations. Secondarily, this research also focused on characterizing diet for the Gepids and the Avars at four different sites from the Migration Period, to understand how the migration and settling into the region and the assimilation of other groups into the two populations affected their …
Microphysical-Dynamical Interaction In Tropical Cyclone Intensification, Zongyao Yang
Microphysical-Dynamical Interaction In Tropical Cyclone Intensification, Zongyao Yang
FIU Electronic Theses and Dissertations
Producing timely and accurate tropical cyclone (TC) intensity forecasts remains one of the most difficult challenges facing meteorologists today. The state-of-the-art three-dimensional (3D) full physics operational models, in particular, have problems in simulating rapid intensification (RI), a situation where a TC intensifies dramatically in a short period of time. For example, Hurricanes Patricia (2015) and Maria (2017) increased their maximum sustained winds by 90 knots and 70 knots within 24 hours, respectively. The major objectives of this dissertation are to (a) explore the underlying reasons why the Hurricane Weather Research and Forecasting (HWRF) system, one of the operational models used …
Defense By Deception Against Stealthy Attacks In Power Grids, Md Hasan Shahriar
Defense By Deception Against Stealthy Attacks In Power Grids, Md Hasan Shahriar
FIU Electronic Theses and Dissertations
Cyber-physical Systems (CPSs) and the Internet of Things (IoT) are converging towards a hybrid platform that is becoming ubiquitous in all modern infrastructures. The integration of the complex and heterogeneous systems creates enormous space for the adversaries to get into the network and inject cleverly crafted false data into measurements, misleading the control center to make erroneous decisions. Besides, the attacker can make a critical part of the system unavailable by compromising the sensor data availability. To obfuscate and mislead the attackers, we propose DDAF, a deceptive data acquisition framework for CPSs' hierarchical communication network. Each switch in the hierarchical …
Plio-Pleistocene Antarctic Ice-Ocean Interactions In The Ross Sea, Catherine Prunella
Plio-Pleistocene Antarctic Ice-Ocean Interactions In The Ross Sea, Catherine Prunella
USF Tampa Graduate Theses and Dissertations
Warm, intermediate-depth Southern Ocean waters are implicated in recent Antarctic ice mass loss. Direct observations of Antarctic Ice Sheet (AIS) retreat are temporally limited, necessitating paleoceanographic records of ocean-ice interactions during past warm climate intervals. Deepsea and ice-proximal sediments record orbitally-paced glacial-interglacial fluctuations in AIS volume during the Plio-Pleistocene (last 5 million years; Ma), but the total contribution of the AIS and the role of ocean heat in these fluctuations remain unresolved. To address the response of Antarctica’s ice sheets to changing ocean temperatures during the Plio-Pleistocene, International Ocean Discovery Program (IODP) Expedition 374 recovered sediments from the Ross Sea …
Modeling Early Life: Ontogenetic Growth And Behavior Affect Population Connectivity In Gulf Of Mexico Marine Fish, Kelly Vasbinder
Modeling Early Life: Ontogenetic Growth And Behavior Affect Population Connectivity In Gulf Of Mexico Marine Fish, Kelly Vasbinder
USF Tampa Graduate Theses and Dissertations
This dissertation is an examination of growth, behavior, and dispersal during the early life stages of marine fishes in the Gulf of Mexico. Understanding movements of early life stages is a key part of managing exploited fish populations. Position in the water column can impact larval dispersal, since it determines those currents to which larvae are exposed. First, I investigated the relationship between length and age in early life stages of marine fishes. I found that demersal fish taxa tend to be represented by exponential models, while pelagic fish tend to be represented by linear models. I suggest this may …
Digital And Mixed Domain Hardware Reduction Algorithms And Implementations For Massive Mimo, Najath A. Mohomed
Digital And Mixed Domain Hardware Reduction Algorithms And Implementations For Massive Mimo, Najath A. Mohomed
FIU Electronic Theses and Dissertations
Emerging 5G and 6G based wireless communications systems largely rely on multiple-input-multiple-output (MIMO) systems to reduce inherently extensive path losses, facilitate high data rates, and high spatial diversity. Massive MIMO systems used in mmWave and sub-THz applications consists of hundreds perhaps thousands of antenna elements at base stations. Digital beamforming techniques provide the highest flexibility and better degrees of freedom for phased antenna arrays as compared to its analog and hybrid alternatives but has the highest hardware complexity.
Conventional digital beamformers at the receiver require a dedicated analog to digital converter (ADC) for every antenna element, leading to ADCs for …
Photo-Production Of Eta Mesons, Mahmoud Mohamed Kamel
Photo-Production Of Eta Mesons, Mahmoud Mohamed Kamel
FIU Electronic Theses and Dissertations
In this work we present the GlueX experiment extensive high statistics measurements of the η meson photo-production differential cross sections at beam energies between 3 GeV and 11.6 GeV. We compared the low energy (2.9 GeV< Eγ < 5.9 GeV) differential cross section (dσ/dΩ) results to previous experimental results from the Continuous Electron Beam Accelerator Facility (CEBAF) Large Acceptance Spectrometer (CLAS) collaboration. These (dσ/dΩ) results are also compared to the theoretical isobar model EtaMAID2018 by Tiator et. al., and the Regge model by Nys et. al. The differential cross section dσ/dt is also presented and compared to the previous experimental results, and to the above models, in addition to a model by J. M. Laget. The high energy (6.2 GeV< Eγ < 11.6 GeV) cross section results (dσ/dΩ, and dσ/dt) are compared to the isobar model EtaMAID2018. These results will provide new constraints on η photo-production mechanisms and high energy t- channel processes.
System Support Of Concurrent Database Query Processing On A Gpu, Hao Li
System Support Of Concurrent Database Query Processing On A Gpu, Hao Li
USF Tampa Graduate Theses and Dissertations
The unrivaled computing capabilities of modern GPUs meet the demand of processing massive amounts of data seen in many application domains. While traditional HPC systems support applications as standalone entities that occupy the entire GPU, we propose a GPU-based DBMS (G-DBMS) that can run multiple tasks concurrently. To that end, system-level management mechanisms like resource allocation and buffer manager are needed to build such a concurrent database query processing system and fully unleash the GPUs’ computing power. However, CUDA does not provide enough OS-level functionalities to support it. Thus our research is focusing on implementing the optimization of resource allocation …
Climate Change And Sustainable Development Within The Tourism Sector Of Small Island Developing States: A Case Study For The Bahamas, Arsum Pathak
USF Tampa Graduate Theses and Dissertations
The research literature suggests Small Island Developing States (SIDS) are vulnerable to climate change. Tourism in SIDS is sensitive to climate variations and dependence of the sector on natural resources (beaches, coral reefs) adds to their vulnerability. The purpose of this study is to assess climate impacts and adaptation within the tourism sector of a SIDS – The Bahamas that relies on tourism and faces climate vulnerabilities, as do other SIDS. Given the importance of tourism to their sustainable development by supporting economic growth and employment, this study identifies timely risks and adaptation planning for a tourism-based SIDS economy in …
Development Of Next-Generation, Fast, Accurate, Transferable, And Polarizable Force-Fields For Heterogenous Material Simulations, Adam E. Hogan
Development Of Next-Generation, Fast, Accurate, Transferable, And Polarizable Force-Fields For Heterogenous Material Simulations, Adam E. Hogan
USF Tampa Graduate Theses and Dissertations
Theoretical modeling is extremely useful in guiding to experiment; however quantitatively accurate modeling of energy-relevant small molecule sorption at the heterogeneous interfaces present in metal-organic materials (MOMs) is currently challenging. MOMs are an emerging class of materials consisting of inorganic clusters and organic linkers that offer great potential in the areas of gas storage, gas separation, and catalysis due to the possibility of large surface areas, complex heterogeneous surfaces, and rational designability. Efficient chemical separations involving these materials could reduce the US’s total energy consumption by approximately 10 to 15%. In this dissertation, the parameterization of small molecules and metal …
Conversion From Metal Oxide To Mof Thin Films As A Platform Of Chemical Sensing, Meng Chen
Conversion From Metal Oxide To Mof Thin Films As A Platform Of Chemical Sensing, Meng Chen
USF Tampa Graduate Theses and Dissertations
Chemical sensor is working as a widely used device which can be applied to the detection of specific chemicals that are existing in the environment especially in gas phase. The detection of combustible and toxic chemicals can be extremely important in the field of both industrial and civil activities. The chemical sensor is commonly operating by utilizing a chemical or physical interaction between the specific chemical compound and the sensing functional unit, to obtain an electronic signal caused by the property change and realize the chemical detection. Traditional chemical gas sensors such as catalytic gas sensor, thermal conductivity gas sensor, …