Digital Commons Network^™

Libra: Harvesting Idle Resources Safely And Timely In Serverless Clusters, Hanfei Yu, Christian Fontenot, Hao Wang, Jian Li, Xu Yuan, Seung Jong Park

Computer Science Faculty Research & Creative Works

Serverless computing has been favored by users and infrastructure providers from various industries, including online services and scientific computing. Users enjoy its auto-scaling and ease-of-management, and providers own more control to optimize their service. However, existing serverless platforms still require users to pre-define resource allocations for their functions, leading to frequent misconfiguration by inexperienced users in practice. Besides, functions' varying input data further escalate the gap between their dynamic resource demands and static allocations, leaving functions either over-provisioned or under-provisioned. This paper presents Libra, a safe and timely resource harvesting framework for multi-node serverless clusters. Libra makes precise harvesting decisions …

Behavior Of Ergodic Averages Along A Subsequence And The Grid Method, Sovanlal Mondal

Electronic Theses and Dissertations Archive

\hspace{.2cm} In the first part of our thesis, we introduce the `grid method' to prove that a very strong type of oscillation occurs for the averages obtained by sampling a flow along the sequence of times of the form $\{n^\alpha: n\in \setN\}$, where $\alpha$ is a {positive non-integer rational number}. More precisely, we show that in every aperiodic dynamical system $(X, \Sigma, \mu, T^t)$, we can find a set $E$ of arbitrarily small measure so that $\limsup_N\frac1N \sum_{n\le N}\setone_E(T^{n^\alpha}x)=1$ and $\liminf_N\frac1N \sum_{n\le N}\setone_E(T^{n^\alpha}x)=0$ almost everywhere. Such behavior of a sequence is known as the \emph{strong sweeping out} property. Using the …

An Investigation Into The Application Of The Meijering Filter For Document Recapture Detection, John Magee, Stephen Sheridan Phd, Christina Thorpe Phd

Conference papers

The proliferation of mobile devices allows financial institutions to offer remote customer services, such as remote account opening. Manipulation of identity documents using image processing software is a low-cost, high-risk threat to modern financial systems, opening these institutions to fraud through crimes related to identity theft. In this paper we describe our exploratory research into the application of biomedical image algorithms to the domain of document recapture detection. We perform a statistical analysis to compare different types of recaptured documents and train a support vector machine classifier on the raw histogram data generated using the Meijering filter. The results show …

Drivers And Dynamics Of Phytoplankton Communities And Harmful Algal Blooms In Mountain Lakes, Lara Stephanie Jansen

Dissertations and Theses

Harmful cyanobacterial blooms (cyanoHABs) are a complex and widespread disturbance in freshwater water bodies, impacting water quality for wildlife and human populations. While cyanobacteria often bloom in warm lakes impacted by human development like agriculture, blooms are increasingly reported in cooler waters with limited development in the surrounding watershed. As much of cyanoHAB research has focused on lakes in highly developed watersheds, the understanding of factors leading to cyanobacteria dominance and blooms in the absence of major development remains limited. Mountain lakes can serve as ideal systems to study bloom-forming cyanobacteria in watersheds with minimal development. In addition, mountain lakes …

Green Infrastructure Intervention To Improve Waste And Water System In Urban Areas, Muthiah Hakim Hadini, Farah Bulqis Muzakar, Nurlina Yustiningrum, Nicole Hall, Peicong Li, Freya Ward, Ova Candra Dewi, Coriesta Dian Sulistiani, Andrew Flynn

Smart City

The increase in waste generation and water use in urban areas may lead to local flooding that is dangerous for health if it is not appropriately managed by waste and water systems in urban infrastructure. Sponge City is a concept that utilizes Green Infrastructures (GIs) to manage waste and water systems while still maintaining open and public spaces function. This study aims to review the waste and water infrastructure systems in Depok, Indonesia which are compared with Gainesville in the United States, America and Cardiff, United Kingdom, to give recommendations for preventing flooding in urban areas. Analysis is done by …

Autonomous Docking System For Assembly And Reconfiguration In Space For Small Satellites, Atheel Redah, Felix Sittner, Saurav Paudel, Sergio Montenegro

Small Satellite Conference

As the number of orbiting satellites has rapidly increased in the last few years, the need of space elements that can perform autonomous rendezvous and docking maneuvers with other orbiting elements for different application such as self-assembly and reconfiguration in space are become more pressing. The TAMARIW project is intended to demonstrate such capability for small satellites. This paper describes the project and the modules being developed to realize its objectives at the time of writing. It will also present the technologies and systems intended to be used for performing safe autonomous undocking/docking maneuvers. Additionally, the testing platforms being built …

Windform® Xt 2.0 Use As 3u Cubesat Primary Structure, Amanda Stark, Andrew Paddock, Thuan Nguyen, Kurt Woodham

Small Satellite Conference

CubeSats provide a platform for small-scale space research and technology demonstration at reduced complexity, cost, and development time. These advantages drove the NASA Langley Research Center (LaRC) to develop and launch the GPX2 3U CubeSat to explore the viability of using Commerical Off-The-Shelf (COTS) differential Global Position System (dGPS) in low earth orbit. To reduce manufacturing costs and increase design flexibility, the project chose additive manufactured Windform® XT 2.0 as the primary bus material rather than traditional subtractive manufactured (milled) metal. The bus is a two-part, Selective Laser Sintered, 3D-print structure consisting of a single-piece, five-walled chassis and single-walled cover. …

The First Chilean Satellite Swarm: Approach And Lessons Learned, Cristobal Garrido, Elías Obreque, Matias Vidal-Valladares, Samuel Gutierrez, Marcos Diaz Quezada, Carlos Gonzalez, Camilo Rojas, Tamara Gutierrez

Small Satellite Conference

SUCHAI 2, SUCHAI 3, and Plansat are three 3U CubeSats designed, manufactured, integrated, and tested by the Space and Planetary Exploration Laboratory at the University of Chile (SPEL). They were launched into space on April 1, 2022, aboard a D-Orbit ION platform. The ION deployer was carried into space on the SpaceX Falcon 9 Transporter 4 mission. The nanosatellites included payloads and experiments from several other national and international groups, all featuring different missions and configurations.

We developed the three CubeSats simultaneously. Some subsystems are the same, while others are specific to each satellite. They include scientific and technical payloads. …

Representing Quantum Spins In Different Coordinate Systems For Modelling Rigid Body Orientation, Nadjet Zioui, Aicha Mahmoudi, Mohamed Tadjine

Karbala International Journal of Modern Science

Various methods for representing the spatial orientation and rotation of objects are presented and compared with the quantum bit state representation. By contrasting spherical, Euler angle, quaternion, and quantum spin coordinate systems, this work highlights important concepts regarding the rotation axis of the X gate. Several ambiguities and incomplete definitions associated with the qubit state representation are discussed, such as the spin around the qubit itself and the explanation of the considered rotation angles and signs. A mathematical analysis of the physical meaning of each eigenstate is provided along with a new comprehensive and meaningful YPR-based 3D representation of a …

Quercetin As An Anticancer Candidate For Glioblastoma Multiforme By Targeting Akt1, Mmp9, Abcb1, And Vegfa: An In Silico Study, Muhammad Hermawan Widyananda, Setyaki Kevin Pratama, Arif Nur Muhammad Ansori, Yulanda Antonius, Viol Dhea Kharisma, Ahmad Affan Ali Murtadlo, Vikash Jakhmola, Maksim Rebezov, Mars Khayrullin, Marina Derkho, Emdad Ullah, Raden Joko Kuncoroningrat Susilo, Suhailah Hayaza, Alexander Patera Nugraha, Annise Proboningrat, Amaq Fadholly, Mada Triandala Sibero, Rahadian Zainul

Karbala International Journal of Modern Science

Quercetin, a natural compound present in various fruits and vegetables, shows promise as a potential inhibitor for glioblastoma multiforme (GBM) development. This study aims to examine the anti-GBM potential of Quercetin. The protein target of Quercetin is identified and analyzed using databases such as NCBI, SEA, CTD, and STRING. Protein-protein interaction (PPI) and functional annotation are carried out based on the obtained target proteins. Molecular docking and dynamics simulations are employed using AutoDock Vina and WebGro tools to analyze the interaction between Quercetin and its target proteins. The prediction of protein targets reveals that Quercetin directly targets four proteins associated …

Improving The Burt’S Sensitivity Using Noise Calibration Unit Via Crab Nebula Observations, Uday E. Jallod, Lana T. Ali, Hareth S. Mahdi, Kamal M. Abood

Karbala International Journal of Modern Science

Radio observations from astronomical sources like supernovae became one the most important sources of information about the physical properties of those objects. However, such radio observations are affected by various types of noise such as those from sky, background, receiver, and the system itself. Therefore, it is essential to eliminate or reduce these undesired noise from the signals in order to ensure accurate measurements and analysis of radio observations. One of the most commonly used methods for reducing the noise is to use a noise calibrator. In this study, the 3-m Baghdad University Radio Telescope (BURT) has been used to …

A Low-Cost, Miniaturized, Homogeneity-Optimized Helmholtz Cage For Cubesat Attitude Control Ground Testing, Devdigvijay Singh, Michael Galvin

Small Satellite Conference

Reduced launch costs and increased interest from researchers and the public have enabled CubeSats to undergo significant evolution in the past decade, expanding their applications to include a broad range of fields such as communication, navigation, observation, education, and science demonstration. For a wide variety of nanosatellite missions ranging from Earth remote sensing to astronomy-related measurements and space debris tracking, the development of passive or active attitude control systems (PACS/AACS) is of great importance. Of the various attitude control and stabilization methods for small satellites, magnetic techniques such as magnetorquers and hysteresis rods offer modest pointing and detumbling capability while …

New Statistical Methodology For Capacitor Data Analysis Via Lcr Meter, Usama Afzal, Muhammad Aslam

Neutrosophic Systems with Applications

This research work introduces a novel methodology to establish the relationship between capacitance and resistance when dealing with imprecise data obtained from LCR meters. The proposed relationship is based on the principles of neutrosophic statistics, enabling the utilization of interval data of resistance or capacitance without losing the indeterminacy of the intervals. By employing this relationship, we can accurately determine capacitance values from interval data of resistance, thereby generating more flexible and informative graphs. Additionally, we have applied the neutrosophic analysis method to the interval data of resistance to further enhance our findings. The comparative analysis demonstrates the superiority of …

New Types Of Soft Sets” Hypersoft Set, Indetermsoft Set, Indetermhypersoft Set, And Treesoft Set”: An Improved Version, Florentin Smarandache

Neutrosophic Systems with Applications

This is an improved paper of [10], where we recall the definitions together with practical applications of the Soft Set and its extensions to HyperSoft Set, IndetermSoft Set, IndetermHyperSoft Set, and TreeSoft Set.

New Statistical Methodology For Capacitor Data Analysis Via Lcr Meter, Usama Afzal, Muhammad Aslam

Neutrosophic Systems with Applications

This research work introduces a novel methodology to establish the relationship between capacitance and resistance when dealing with imprecise data obtained from LCR meters. The proposed relationship is based on the principles of neutrosophic statistics, enabling the utilization of interval data of resistance or capacitance without losing the indeterminacy of the intervals. By employing this relationship, we can accurately determine capacitance values from interval data of resistance, thereby generating more flexible and informative graphs. Additionally, we have applied the neutrosophic analysis method to the interval data of resistance to further enhance our findings. The comparative analysis demonstrates the superiority of …

New Types Of Soft Sets” Hypersoft Set, Indetermsoft Set, Indetermhypersoft Set, And Treesoft Set”: An Improved Version, Florentin Smarandache

Neutrosophic Systems with Applications

This is an improved paper of [10], where we recall the definitions together with practical applications of the Soft Set and its extensions to HyperSoft Set, IndetermSoft Set, IndetermHyperSoft Set, and TreeSoft Set.

Exploring The Impact Of Hexagon Fraud Theory On Fraud Tendencies Among Regional Work Unit Employees In Bandung City: A Quantitative Analysis, Andini Dwiyanti, Nunuy Nur Afiah, Ivan Yudianto

Journal of Accounting Auditing and Business

This research aimed to analyze the effect of the hexagon fraud theory on fraud tendencies based on the perceptions of regional work unit employees in Bandung City. This research used a quantitative approach. The sample was 364 regional work unit employees in Bandung City. A simple random sampling method was used in this research. Data were analyzed using multiple linear regression. The results of this research indicated that the variables of distributive justice (proxy of stimulus), collusion, and internal control (proxy of opportunity) have a negative and significant effect on fraud tendencies. Meanwhile, the variables of leadership style (proxy of …

Stem Implementation Issues In Indonesia: Identifying The Problems Source And Its Implications, Janu Arlinwibowo Dr., Heri Retnawati Prof. Dr, Rian Galih Pradani, Gupita Nadindra Fatima

The Qualitative Report

The last few years, STEM education received more attention in the world, including Indonesia. There are many teachers who have participated in socialization and applied STEM in their schools. Therefore, this study aims to describe the various obstacles faced by teachers implementing STEM learning. This qualitative study uses a phenomenological methodology. Data is collected from in-depth interviews with nine teachers who have information and knowledge related to STEM as an integrative learning framework and have participated in socialization, workshops, or seminars. The stages of data analysis are doing data reduction, determining themes, making links between themes, and concluding findings. The …

“Hell Is Only A Word. The Reality Is Much, Much Worse”: Black Holes As Fantasy Gateways To Hell, Kristine Larsen

Online Midwinter Seminar (OMS)

Black holes are frequently described as the scariest objects in the universe, even by the normally staid scientists who study them. Like the warning on the gate of Hell in Dante’s Inferno, any (hu)man or matter that dares to cross the event horizon abandons all hope before literally being ripped to shreds by the object’s extreme tidal forces. As the heart of the beast is approached, the laws of physics break down, time loses its simple everyday meaning, and mathematical madness reigns supreme. It is no wonder that Hollywood has repeatedly adopted the black hole as more than merely …

Technology Challenges Of Surround: A Constellation Of Small Satellites Around The Sun For Tracking Solar Radio Bursts, Nicholas H. Crisp, Alejandro Macario Rojas, Ciara N. Mcgrath, Shane Maloney, L. Alberto Cañizares, Dale M. Weigt, Sophie Murray, Eoin Carley, Peter Gallagher

Small Satellite Conference

The SURROUND mission proposes the operational monitoring and forecasting of space weather events using a constellation of five small satellites in orbit around the Sun. This unique mission concept would enable the localisation and tracking of solar events with unprecedented accuracy. The small payload combined with high launch requirements makes this an ideal candidate mission for a distributed constellation of small spacecraft and provides an opportunity for technical development in the areas of deep space communication, propulsion, and survivability. The baseline configuration for SURROUND proposes the deployment of spacecraft to Earth-Sun Lagrange points L1, L4, and L5, and two additional …

Developing Intelligent Space Systems: A Survey And Rubric For Future Missions, Mary Dahl, Christine Page, Kerri Cahoy, Evana Gizzi

Small Satellite Conference

Space exploration continues to inspire the development of advanced technologies to explore the universe. From moon landings and the Mars rovers to the recent successful deployment of the James Webb Telescope, space exploration continues to push the limits of what is possible in both science and technology and to pave new ways for the discovery of our galaxy. While we have seen great advancements and barriers broken, we remain limited in our ability to optimize science discovery without onboard intelligent capabilities to enable complex system missions. In this paper, we focus on AI technologies and cross-disciplinary directions for sparking research …

Comparison Of Tracking-By-Detection Algorithms For Real-Time Satellite Component Tracking, M. Nehru J. Attzs, Trupti Mahendrakar, Mackenzie J. Meni, Ryan T. White, Isaac Silver

Small Satellite Conference

With space becoming more and more crowded, there is a growing demand for increasing satellite lifetimes and performing on-orbit servicing (OOS) at a scale that calls for autonomous missions. Many such missions would require chaser satellites to autonomously execute safe and effective flightpath to dock with a non-cooperative target satellite on orbit. Performing this autonomously requires the chaser to be aware of hazards to route around and safe capture points through time, i.e., by first identifying and tracking key components of the target satellite. State-of-the-art object detection algorithms are effective at detecting such objects on a frame-by-frame basis. However, implementing …

Control Of Small Spacecraft By Optimal Output Regulation: A Reinforcement Learning Approach, Joao Leonardo Silva Cotta, Omar Qasem, Paula Do Vale Pereira, Hector Gutierrez

Small Satellite Conference

The growing number of noncooperative flying objects has prompted interest in sample-return and space debris removal missions. Current solutions are both costly and largely dependent on specific object identification and capture methods. In this paper, a low-cost modular approach for control of a swarm flight of small satellites in rendezvous and capture missions is proposed by solving the optimal output regulation problem. By integrating the theories of tracking control, adaptive optimal control, and output regulation, the optimal control policy is designed as a feedback-feedforward controller to guarantee the asymptotic tracking of a class of reference input generated by the leader. …

Characterization And Modeling Of Rectifying Antennas For Space-To-Space Power Transmission, Leilani Baker, Zack Daniels, Samantha Korfe, Will Hamel, Chad Rathbun, Ricardo Quintana, Dante Orona Yang, Hailey Holder, Joseph Likar, Steve Lindsley, Rachel Delaney, Constance Moyer, Christopher Rodenbeck, Brian Tierney

Small Satellite Conference

Wireless electrical power transmission, also known as power beaming, is an old idea with renewed interest that has the potential to create a new solar power infrastructure. COSMIAC, a research center of The University of New Mexico School of Engineering, in partnership with the Air Force Research Laboratory (AFRL) and Operational Energy – Innovation (OE-I) fund is developing a ground-based experiment aimed at supporting space-based wireless power transmission called Wolf. In parallel, AFRL is developing Arachne to demonstrate space-based power transmission to various receivers. The Wolf project is evaluating design concepts for potential rectenna-powered CubeSats by demonstrating ground-based power beaming …

Development And Characterization Of A Vectored Electrospray Thruster, Ivan Savytskyy, Manish Jugroot

Small Satellite Conference

Next-generation nanosatellite missions will require precise linear impulse and torque bits for optimized attitude and trajectory control. To address this requirement, a Vectored Electrospray Thruster (VET) that provides high-resolution multi-axis attitude actuation via thrust vector control was investigated at the Royal Military College of Canada Advanced Propulsion and Plasma Exploration Laboratory (RAPPEL). The VET employs arrays of linear porous wedge emitters and uses pulse-width modulation to produce stepped emission differentials across the nanosatellite propulsion plane. A two-emitter prototype offering single-axis attitude actuation was developed to validate the thruster concept, and a custom power processing unit and complementary diagnostics suite were …

Automating Spacecraft Analysis: The Era Of Ontological Modeling & Simulation, Michael Halvorson, Noah Moyers, Carlos Domani, Johny Corona, Matthew Gillis, Sean Price, Aiden Raley, Andrew Crudup, Andrew Walter, Coleman Deschepper, Grant Gravitt, Jacob Wilkins, Nik Dreicer, Seth Porter, Tyler Babinec, Tyler Johnson, Nicolas Tsolas, L. Dale Thomas

Small Satellite Conference

Verification by analysis is a predicted compliance of a design to imposed requirements. The levels of performance specified by performance requirements can be related to Technical Performance Measures (TPM) in a Model-Based Systems Engineering (MBSE) environment, but engineers performing verification by analysis are not commonly versed in professional Systems Engineering (SE) techniques or modeling languages such as SysML. As the formal application of Systems Engineering (SE) results in a diminution of time, effort, and money for large-scale projects, enabling technical engineers performing verification by analysis to contribute to MBSE improvements in the course of their daily work is financially incentivized. …

The Kihm-9: A Novel Self-Deploying Picosat Antenna Design For Reflectarray Antennas, Nathan Coleman, Mitchel Skinner, Collin Ynchausti, Spencer Magleby, Larry Howell, Akash Biswas

Small Satellite Conference

Reflectarray antennas are popular on satellites for their ability to achieve similar performance to parabolic antennas in a more compact volume. This project shows how integrating novel technologies achieves the benefits of larger antennas while maintaining the advantages of small satellites. The objective of this research is to create a reflectarray antenna for a holographic metasurface that utilizes the volume surrounding a CubeSat when stowed, incorporates a novel pin-less hinge, includes a self-deploying and stabilizing joint, and is manufactured out of space-grade materials. By using hinges embedded with membranes and magnets, issues with lubrication and outgassing may be avoided, and …

Online Midsummer Seminar (Oms #2) "Fantasy Goes To Hell", The Mythopoeic Society

Mythcon Programs

FANTASY GOES TO HELL was originally intended to be our 2023 Midwinter Seminar, but our plans for an in-person Mythcon in 2023 fell through, and the topic proved to be so popular it strained the resources we had available for a seminar. Hence we proposed that we expand the seminar into what we have previously called a “Halfling Mythcon”—a virtual Mythcon taking the place of an in-person one.

FANTASY GOES TO HELL will run in parallel with general virtual conference tracks devoted to other topics in Mythopoeic Fantasy, such as presentations by award nominees and traditional after-hours programming. The 2023 …

Commencement Convocation Program, Usf, August 8, 2023, University Of South Florida

USF Graduation and Convocation Programs

King O'Neal Scholars - Emma Grace Atherton, Alisa Bakieva, Ginelle Renae Lauryn Brown, Tatyana Soribel Butler, Carter E. Casko, Carli Lilibeth Cohoon, Sarah Lou Shalom Dasent Shuler, Carlos Manuel Figueroa Palomino, Lanette Gonzalez-Lewis, Grace Angelique Heeke, Daniel Thomas Kortenhaus, Emily Margaret Logan, Makayla Long, Abigail Clariece McCurter, Elijah Callaway Mceuen, Sofia Elizabeth Mejia-Naccarato, Rachel Yvonne Stanton, Edward B. Williams, and Parisa Yazdankhah Kenary; Global Citizens Award - Sarah Bagnasco, Sydney Black, Carly Burton, Gladys D. Cantu, Sara Chaj, Lauren Flannery, Emily Hernandez, Anagha Hesaraghatta, Faith Pinamang, Katie Sarnelli, Natalie Spanhake, Kenya A. Sanchez Torres, and Neha Vemuri

Proposing A Measure Of Ethicality For Humans And Ai, Alejandro Jorge Napolitano Jawerbaum

Electronic Theses and Dissertations

Smarter people or intelligent machines are able to make more accurate inferences about their environment and other agents more efficiently than less intelligent agents. Formally: ‘Intelligence measures an agent’s ability to achieve goals in a wide range of environments.’ (Legg, 2008)

In this dissertation we extend this definition to include ethical behaviour and we will offer a mathematical formalism and a way to estimate how ethical an action is or will be, both for a human and for a computer, by calculating the expected values of random variables. Formally, we propose the following measure of ethicality, which is computable, or …