Browsing by Issue Date
Now showing items 21-40 of 77475
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Compiler and Runtime Optimization of Computational Kernels for Irregular Applications
(2023-08-17)Many computationally-intensive workloads do not fit on individual compute nodes due to their size. As a consequence, such workloads are usually executed on multiple heterogenous compute nodes of a cluster or supercomputer. However, due to the complexity of the hardware, developing efficient and scalable code for modern compute nodes is difficult. ... -
Compiler and Runtime Optimization of Computational Kernels for Irregular Applications
(2023-08-17)Many computationally-intensive workloads do not fit on individual compute nodes due to their size. As a consequence, such workloads are usually executed on multiple heterogenous compute nodes of a cluster or supercomputer. However, due to the complexity of the hardware, developing efficient and scalable code for modern compute nodes is difficult. ... -
Additive manufacture-assisted method for making structural elements having controlled failure characteristics
(2023-08-15)A process for making a layered multi-material structural element having controlled mechanical failure characteristics. The process includes the steps of: supplying a cementitious layer and forming a polymer layer on the cementitious layer by additive manufacture such that the polymer layer has a first thickness and the cementitious layer has a second ... -
Advances in Carbon Nanotechnology: Non-Equilibrium Graphene Synthesis and the Control of Cell Signaling with Molecular Machines
(2023-08-11)Carbon, known as the "element of life," has long fascinated researchers due to its exceptional versatility as a molecular building block. With its ability to form a wide range of molecular structures and exhibit diverse bonding configurations, carbon has become the cornerstone of countless organic compounds. In recent years, this inherent versatility ... -
Flash Joule heating for nanomaterials synthesis, waste upcycling, and hydrogen production
(2023-08-11)Many sustainable technologies, such as chemical recycling of waste plastics or the low-carbon intensity production of clean-burning hydrogen gas, have existed for decades. However, despite current political and societal initiatives to minimize plastic waste or transition to hydrogen energy sources, little global progress has been made in their widescale ... -
Catalysts Design and Reactor Engineering for Electrochemical CO2 Capture and Utilization
(2023-08-11)The rapidly increasing concentration of carbon dioxide (CO2) in the atmosphere has raised serious concerns regarding global climate change. In response to this challenge, the Paris Agreement has set ambitious targets to reduce global greenhouse gas emissions and limit the global temperature increase to no more than 1.5˚C above pre-industrial levels. ... -
On the Design of Reconfigurable Edge Devices for RF Fingerprint Identification (RED-RFFI) for IoT Systems
(2023-08-11)Radio Frequency Fingerprint Identification (RFFI) classifies wireless transmitters by the signal distortions from their unique hardware impairments. RFFI capable receivers can authenticate insecure transmissions without the sender's cooperation, making them well suited for notoriously vulnerable IoT devices. Neural networks have dominated recent RFFI ... -
A Worldbuilding Moment: Aesthetics and Economics in the Caribbean Festival of Arts’ (Carifesta) Revolutionary Era, 1966-1981
(2023-08-11)A Worldbuilding Moment tells a story of the early years of the Caribbean Festival of Arts (Carifesta), a roving, multimedia, multilingual, and still semi-regularly recurring festival. Homing in on what I call Carifesta’s “revolutionary era”—comprising its founding, inauguration in Guyana (1972), and iterations in Jamaica (1976), Cuba (1979), and ... -
Igneous life cycles: geochemistry of magma from mantle to surface and back again
(2023-08-11)Material from within the Earth is cycled and recycled from the interior of the Earth to the surface in igneous rocks. The chemistry of igneous rocks record snapshots of this complex history. Here, we use three major projects to assess important processes in this life cycle. Continental arc volcanism generates a wide diversity of magma compositions, ... -
Understanding the Conditions for Detecting a Phonology to Articulation Cascade in Speech Production
(2023-08-11)Phonetic distortions, subtle acoustic traces of how a competitor would be produced on the articulation of a response, have been used as evidence for cascading activation from phonological planning to articulatory implementation, that is that information flows between these levels of representation in the language production system prior to selection ... -
Spatial Region Constraints in Motion Planning for Surgical Robotics
(2023-08-11)Surgical robots have exhibited remarkable efficacy over the years, however, their use has predominantly been limited to application-specific designs. This research seeks to overcome these limitations, demonstrating the potential of using motion-planning algorithms with general-purpose robots specifically in the context of neurosurgery. Specific ... -
Advances in Carbon Nanotechnology: Non-Equilibrium Graphene Synthesis and the Control of Cell Signaling with Molecular Machines
(2023-08-11)Carbon, known as the "element of life," has long fascinated researchers due to its exceptional versatility as a molecular building block. With its ability to form a wide range of molecular structures and exhibit diverse bonding configurations, carbon has become the cornerstone of countless organic compounds. In recent years, this inherent versatility ... -
Igneous life cycles: geochemistry of magma from mantle to surface and back again
(2023-08-11)Material from within the Earth is cycled and recycled from the interior of the Earth to the surface in igneous rocks. The chemistry of igneous rocks record snapshots of this complex history. Here, we use three major projects to assess important processes in this life cycle. Continental arc volcanism generates a wide diversity of magma compositions, ... -
Language Support for Real-time Data Processing
(2023-08-11)Recent technological advances are causing an enormous proliferation of streaming data, i.e., data that is generated in real-time. Such data is produced at an overwhelming rate that cannot be processed in traditional manners. This thesis aims to provide programming language support for real-time data processing through three approaches: (1) creating ... -
Seeing the Invisible: Next-generation vision systems leveraging polarization and time-of-flight of light
(2023-08-11)The visual world is a complex interplay of light, encompassing a wealth of information beyond what we perceive with the human eye. Conventional cameras, inspired by human vision, are limited to measuring light intensity and color, thereby constraining our ability to capture the visual environment. The intensity and color of a scene are intricate ... -
Emotions and Social Attitudes: Exploring Why Disgust Underlies Conservatism and Prejudice
(2023-08-11)A voluminous literature in political science has found that individuals higher on disgust sensitivity are more likely to be socially conservative, vote for right-wing parties, and hold prejudice towards outgroups. This project seeks to identify the causal mechanism behind these relationships. Each chapter in this project focuses on a different theory: ... -
Network science algorithms for the reliability and resilience of engineered infrastructure networks
(2023-08-11)Critical infrastructure networks are essential engineered systems for modern society, encompassing power grids, telecommunication networks, transportation systems, and water distribution networks, among others. Despite their crucial role in maintaining community normalcy, critical infrastructure networks face a variety of threats, such as aging, ... -
Advancing Higher Level Control of Nanoparticle Assemblies Through Ligands
(2023-08-11)The nanoscale size regime is full of potential for the study and development of new functional materials. Many biological materials exist on the nanoscale and can assemble into a variety of complex machinery capable of performing the functions necessary for life to continue. Human-made materials are still far behind what exists naturally, however, ... -
Engineering Surfaces for Sensitive Detection of Analytes
(2023-08-11)Engineering functional surfaces and tuning their properties has significant implications that allow us to harness their potential in addressing relevant scientific challenges. The work presented in this thesis investigates the intelligent design of micro- and nanoscale surfaces and their interactions with biomolecular and SERS-active analytes in ... -
Deep Graph Representation Learning: Scalability and Applications
(2023-08-10)The ubiquity of graphs in science and industry has motivated the developments of graph representation learning algorithms, where graph neural networks (GNNs) have emerged as one of the predominant computational tools. In general, GNNs apply a recursive message passing mechanism to learn the representation of each node by incorporating representations ...
