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Articles 34201 - 34230 of 294505
Full-Text Articles in Physical Sciences and Mathematics
Dust-Driven Mechanism For Marine Particle Aggregation: Interactions Between Clay Minerals, Heterotrophic Bacteria And Organic Matter Influences Aggregation In Marine Systems, Vignesh Gokuladas Menon
Dust-Driven Mechanism For Marine Particle Aggregation: Interactions Between Clay Minerals, Heterotrophic Bacteria And Organic Matter Influences Aggregation In Marine Systems, Vignesh Gokuladas Menon
Dartmouth College Master’s Theses
Atmospheric dust deposition plays a crucial role in marine biogeochemical cycles, yet mechanisms underlying its impact on particle dynamics remain unclear. This study investigates the synergistic interactions between marine heterotrophic bacteria and clay minerals in seawater, focusing on their effect on Transparent Exopolymer Particles (TEP) production and organoclay aggregation. Field experiments in the Gulf of Maine and laboratory roller tank studies were conducted using natural microbial communities and model heterotrophic bacterial strains (Alteromonas sp. EZ55, Marinobacter adhaerens HP15, and Sulfitobacter sp. NAS-14.1). Results demonstrate that clay exposure significantly enhances TEP production by bloom-associated heterotrophic bacteria, with increases up to …
Modeling Coupled Driving Behavior During Lane Change: A Multi-Agent Transformer Reinforcement Learning Approach, Hongyu Guo, Mehdi Keyvan-Ekbatani, Kun Xie
Modeling Coupled Driving Behavior During Lane Change: A Multi-Agent Transformer Reinforcement Learning Approach, Hongyu Guo, Mehdi Keyvan-Ekbatani, Kun Xie
Civil & Environmental Engineering Faculty Publications
In a lane change (LC) scenario, the lane change vehicle interacts with surrounding vehicles. The interactions not only affect their driving behaviors but also influence the traffic flow. This study aims to model the coupled behavior of the lane changer and the follower in the target lane during LC. Large-scale real-world connected vehicle (CV) data from the Safety Pilot Model Deployment (SPMD) program are used to extract LCs and study vehicle interactions. A multi-agent Transformer-based deep deterministic policy gradient (MA-TDDPG) method is proposed to model the coupled behaviors during LC. The multi-agent framework can handle the multiple agents’ behaviors with …
Implications Of Alternative Communications And Sensing Technologies For Implementing Variable Speed Limit Control Through Connected Vehicles: Sag Curve As A Case Study, Reza Vatani Nezafat, Mecit Cetin, Elizabeth Williams, George F. List
Implications Of Alternative Communications And Sensing Technologies For Implementing Variable Speed Limit Control Through Connected Vehicles: Sag Curve As A Case Study, Reza Vatani Nezafat, Mecit Cetin, Elizabeth Williams, George F. List
Civil & Environmental Engineering Faculty Publications
Connected vehicles (CVs) will enable various applications to improve traffic flow. This paper's focus is to investigate how the potential implementation of variable speed limit (VSL) through different types of communication and sensing technologies on CVs makes it possible to mitigate congestion at a sag curve bottleneck. A VSL algorithm is developed and implemented in a simulation environment for controlling the inflow of vehicles to a sag curve to minimize delays and increase throughput. Both vehicle-to-vehicle (V2V) and infrastructure-to-vehicle (I2V) options for CVs are investigated when implementing the VSL control strategy in a simulation environment. Also, for measuring traffic density …
A General Framework For Modeling Subregional Path Effects, T. E. Buckreis, P. Wang, S. J. Brandenberg, J. P. Stewart
A General Framework For Modeling Subregional Path Effects, T. E. Buckreis, P. Wang, S. J. Brandenberg, J. P. Stewart
Civil & Environmental Engineering Faculty Publications
Next Generation Attenuation (NGA) West2 ground motion models (GMMs) include regional path adjustments for broad jurisdictional regions, which necessarily averages spatially variable path effects within those regions. We extend that framework to account for systematic variations in attenuation within subregions defined in consideration of geologic differences. In recent years, cell-based methods which systematically account for spatial variations by summing the attenuation effects over a fine discretization of uniform-rectangular cells (e.g., Dawood and Rodriquez-Marek 2013; Kuehn et al. 2019) have been shown to be an effective alternative to regionalization and a step towards modelling non-ergodic path effects. The main drawbacks of …
A Prototype Application For The Measurement Of Data Breach Event Intensity, James Palazzolo
A Prototype Application For The Measurement Of Data Breach Event Intensity, James Palazzolo
Master's Theses and Doctoral Dissertations
The data breach phenomenon is not new. People have valued information, its protection, and its security for centuries. A data breach is the loss of control over one’s information. In contemporary society (circa 2024), a data breach can occur in several ways: through accidental disclosure, negligence, or malicious action. Likewise, the study of the data breach phenomenon is not new. As with other studies, this research effort seeks to expand the current body of knowledge concerning data breaches. However, unlike previous research, we adopt a novel approach to further our understanding of the phenomenon. By employing topological and phenomenological thinking, …
Economical And Environmental Evaluation Of Non-Residential Demand Response In The European Transition To Zero-Carbon Energy, Markus Fleshutz
Economical And Environmental Evaluation Of Non-Residential Demand Response In The European Transition To Zero-Carbon Energy, Markus Fleshutz
Theses
To meet climate objectives, major energy consumers with local multi-energy systems (L- MESs) must transition to renewable energy sources soon. The variability of renewable energies requires increased operational flexibility for integration. In this context, demand response (DR), a strategy in which electricity consumers adjust their load profiles in response to incentives, has become crucial, offering cost-effective flexibility. It supports L-MESs in integrating renewable energy, reducing decarbonization costs, and enhancing resilience. However, quantifying the economic DR potentials for L-MESs under carbon emission constraints is complex, especially when considering investment options in distributed energy resources. This complexity hinders the rapid adoption of …
Revised Geologic Map And Structural Interpretation Of The Mineral King Pendant, Southern Sierra Nevada, California (Usa): Evidence For Kilometer-Scale Folding And Structural Imbrication Of A Permian To Mid-Cretaceous Volcanosedimentary Assemblage, David C. Greene, Jade Star Lackey, Erik W. Klemetti
Revised Geologic Map And Structural Interpretation Of The Mineral King Pendant, Southern Sierra Nevada, California (Usa): Evidence For Kilometer-Scale Folding And Structural Imbrication Of A Permian To Mid-Cretaceous Volcanosedimentary Assemblage, David C. Greene, Jade Star Lackey, Erik W. Klemetti
Faculty Publications
No abstract provided.
Arsenic And Accountability: A Retrospective On The Arsenic-Life Controversy, Jules Lieberman
Arsenic And Accountability: A Retrospective On The Arsenic-Life Controversy, Jules Lieberman
The Synapse: Intercollegiate science magazine
No abstract provided.
Marriage: Penguins And Humans Propose | A Ritual That Transcends Gender And Species, Ann Clark
Marriage: Penguins And Humans Propose | A Ritual That Transcends Gender And Species, Ann Clark
The Synapse: Intercollegiate science magazine
No abstract provided.
From Fictional Pandemics To Potential Reality: The Realities And Myths Of 'The Last Of Us' Cordyceps Fungus, Jaedyn O'Reilly
From Fictional Pandemics To Potential Reality: The Realities And Myths Of 'The Last Of Us' Cordyceps Fungus, Jaedyn O'Reilly
The Synapse: Intercollegiate science magazine
No abstract provided.
Featured Artists: Grace Weber, Anadi Purewal-Legha, Ofek Levy
Featured Artists: Grace Weber, Anadi Purewal-Legha, Ofek Levy
The Synapse: Intercollegiate science magazine
No abstract provided.
In The Age Of Ozempic: Semiglutide's Impact On The Weight-Loss Frontier, Luke Dodson
In The Age Of Ozempic: Semiglutide's Impact On The Weight-Loss Frontier, Luke Dodson
The Synapse: Intercollegiate science magazine
No abstract provided.
Resourceful Remedies: Herbal Medicines In Indigenous Villages Of Northern Thailand, Ava Peyton
Resourceful Remedies: Herbal Medicines In Indigenous Villages Of Northern Thailand, Ava Peyton
The Synapse: Intercollegiate science magazine
No abstract provided.
Navigating Digital Neurodiversity: Understanding The Intersection Of Neurodiversity And Technology For Personal Wellbeing, Haze Doleys
The Synapse: Intercollegiate science magazine
No abstract provided.
Learning To Learn: The Neuroscience Of Affective Learning, Emma Barnard
Learning To Learn: The Neuroscience Of Affective Learning, Emma Barnard
The Synapse: Intercollegiate science magazine
No abstract provided.
Materials And Methods In Squid Dissolution, Isabel Hardwig
Materials And Methods In Squid Dissolution, Isabel Hardwig
The Synapse: Intercollegiate science magazine
No abstract provided.
In The Shadow Of The Moon: Reflections On The April 2024 Total Solar, Danielle Oliver
In The Shadow Of The Moon: Reflections On The April 2024 Total Solar, Danielle Oliver
The Synapse: Intercollegiate science magazine
No abstract provided.
Exploring The Neural Jungle: The Positive Effects Of Hallucinogens On The Brain, Izzie Braun
Exploring The Neural Jungle: The Positive Effects Of Hallucinogens On The Brain, Izzie Braun
The Synapse: Intercollegiate science magazine
No abstract provided.
The Synapse Crossword
The Synapse: Intercollegiate science magazine
No abstract provided.
Don’T Touch My Memories! Turning Fake Stories Into Real Memories, Zeynep Kaya
Don’T Touch My Memories! Turning Fake Stories Into Real Memories, Zeynep Kaya
The Synapse: Intercollegiate science magazine
No abstract provided.
Information Overload: Marketable Diagnostic Data In Full Body Mris, Luke Dodson
Information Overload: Marketable Diagnostic Data In Full Body Mris, Luke Dodson
The Synapse: Intercollegiate science magazine
No abstract provided.
Complexity, Entanglement And Codes In Quantum Field Theory, Nikolaos Angelinos
Complexity, Entanglement And Codes In Quantum Field Theory, Nikolaos Angelinos
Theses and Dissertations--Physics and Astronomy
In recent decades many deep connections between quantum information theory and quantum field theory have been unearthed. In this dissertation we study topics in high-energy physics through the lens of quantum information: 1) We develop connections between error-correcting codes and Narain conformal field theories. 2) We study the entanglement entropy of one-dimensional fermionic chains with long-range interactions. 3) We study the temperature dependence of Lanczos coefficients and Krylov complexity.
Topics In Quantum Information, Complexity And Chaos, Debarghya Chakraborty
Topics In Quantum Information, Complexity And Chaos, Debarghya Chakraborty
Theses and Dissertations--Physics and Astronomy
This dissertation explores quantum information, the use of codes to describe quantum field theories, and introduces new concepts to characterize the dynamics of quantum many-body systems. The contributions of this dissertation are the following: 1) We constructed Narain Conformal Field Theories (CFTs) using additive codes, where the modular bootstrap constraints translate into algebraic conditions on the codes, extending previous approaches. This helps express key CFT data, including the torus partition function, in terms of codewords. We constructed optimal Narain CFTs for small central charges, and described CFT ensembles for asymptotically large central charge with large spectral gap. 2) We studied …
การอัตโนมัติกระแสงานของระบบการจัดการเนื้อหาด้วยพาวเวอร์ออโตเมต, อภิญญา แขนสูงเนิน
การอัตโนมัติกระแสงานของระบบการจัดการเนื้อหาด้วยพาวเวอร์ออโตเมต, อภิญญา แขนสูงเนิน
Chulalongkorn University Theses and Dissertations (Chula ETD)
งานวิจัยนี้นำเสนอการพัฒนาระบบอัตโนมัติกระแสงานของระบบจัดการเนื้อหา หรือ ซีเอ็มเอส โดยใช้ ไมโครซอฟต์ พาวเวอร์ ออโตเมต และ เอไอ บิวเดอร์ บูรณาการกับ สตราพี ซีเอ็มเอส และ แชร์พอยต์ เพื่อเพิ่มประสิทธิภาพ ลดความผิดพลาดจากการดำเนินงานด้วยมือ และยกระดับความคล่องตัวในองค์กร กระแสงานที่พัฒนาแชร์พอยต์ประกอบด้วยการบูรณาการเว็บฮุก ของ สตราพี ซีเอ็มเอส เพื่อเริ่มต้นกระบวนการอัตโนมัติ การตรวจสอบความถูกต้องของเนื้อหาด้วยเอไอ บิวเดอร์ การบันทึกข้อมูลเหตุการณ์และข้อผิดพลาดในแชร์พอยต์ อีกทั้งการแจ้งเตือนผ่านไมโครซอฟท์ ทีม นอกจากนี้ ยังมีการใช้ จีพีที 4.0 สำหรับการวิเคราะห์บันทึกข้อผิดพลาด เพื่อเสนอแนวทางแก้ไขและปรับปรุงกระบวนการ ผลการทดลองในธนาคารพาณิชย์ไทยแห่งหนึ่งแสดงให้เห็นว่าสามารถลดระยะเวลาในการจัดการเนื้อหาได้ร้อยละ 87.5 และลดข้อผิดพลาดจากการป้อนข้อมูลได้ร้อยละ 80 เมื่อเทียบกับการทำงานแบบเดิมด้วยมนุษย์ งานวิจัยนี้ได้เน้นให้เห็นถึงศักยภาพของการใช้เทคโนโลยีดิจิทัลที่นำไปสู่โซลูชันการอัตโนมัติระบบการจัดการเนื้อหาที่เป็นรูปธรรม
Structure Identification For High-Dimensional Data In The Vicinity Of Bear Lake, Ben Shaw, Haley Burger, Brennan L. Bean, Kevin R. Moon
Structure Identification For High-Dimensional Data In The Vicinity Of Bear Lake, Ben Shaw, Haley Burger, Brennan L. Bean, Kevin R. Moon
Mathematics and Statistics Faculty Publications
This report focuses on seven water quality measurements taken at 43 different depths on the Bear Lake, Utah-Idaho for the months of June - November in the years 2018 - 2023. These measurements create a high-dimensional dataset on which we apply state-of-the-art machine learning (ML) techniques to look for low-dimensional structure in the data. A similar effort was made for weather measurements taken near the lake. Our analysis reveals that water quality measurements tend to cluster (i.e., group together) by year, while weather measurements tend to cluster by time of the year. This in mind, we explore potential drivers of …
Learning To Code With Github Copilot: A Resource For New Student Developers, Sarah Zelikovitz
Learning To Code With Github Copilot: A Resource For New Student Developers, Sarah Zelikovitz
Open Educational Resources
This resource provides a step-by-step guide for new student developers on using GitHub Copilot. It covers the process of signing up for GitHub's Educaon program, integrang Copilot into two popular integrated development environments (IDEs), and using Copilot to generate, document, debug, and optimize code through prompt-based interactions. This guide empowers students to leverage AI-driven assistance in solving coding challenges. It also gives students an understanding of the limitations of AI, and how to use it safely and effectively.
Magnetic Spin Transport Coils For The N2edm Experiment, David C. Bowles
Magnetic Spin Transport Coils For The N2edm Experiment, David C. Bowles
Theses and Dissertations--Physics and Astronomy
The n2EDM experiment is being construct at Paul Scherrer Institute to measure the electric dipole moment of the neutron (nEDM), in a search for new physics which could help explain the baryon asymmetry of the universe. To reach the experimental sensitivity goal of $d_n \sim 10^{-27}$, over an order of magnitude improvement from the current world limit, a spin polarization transfer efficiency of 99\% for ultracold neutrons entering or exiting the precession chamber is required, placing a stringent requirement on the adiabaticity of the magnetic field taper in the neutron guide system. The spin transport fields transition from 5~T (longitudinal) …