J. R. Smith
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View article: TetraGrip: Sensor-Driven Multi-Suction Reactive Object Manipulation in Cluttered Scenes
TetraGrip: Sensor-Driven Multi-Suction Reactive Object Manipulation in Cluttered Scenes Open
Warehouse robotic systems equipped with vacuum grippers must reliably grasp a diverse range of objects from densely packed shelves. However, these environments present significant challenges, including occlusions, diverse object orientatio…
View article: Low thermal noise mirror coatings utilising titanium dioxide and germanium dioxide mixtures
Low thermal noise mirror coatings utilising titanium dioxide and germanium dioxide mixtures Open
Upgrades to ground-based gravitational-wave observatories will require mirror coatings with reduced thermal noise, enabling improved detector sensitivity and extended astrophysical reach. Recent studies have shown that optical coatings uti…
View article: Association between locomotor muscle quality and cardiac function during exercise in heart failure with preserved ejection fraction
Association between locomotor muscle quality and cardiac function during exercise in heart failure with preserved ejection fraction Open
Our data suggest MQ is closely related to cardiac function at peak exercise in HFpEF. These data suggest that MQ may be a useful tool for understanding exercise performance in HFpEF.
View article: OptiGrasp: Optimized Grasp Pose Detection Using RGB Images for Warehouse Picking Robots
OptiGrasp: Optimized Grasp Pose Detection Using RGB Images for Warehouse Picking Robots Open
In warehouse environments, robots require robust picking capabilities to manage a wide variety of objects. Effective deployment demands minimal hardware, strong generalization to new products, and resilience in diverse settings. Current me…
View article: Characterizing gravitational wave detector networks: from A<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow/><mml:mo>♯</mml:mo></mml:msup></mml:mrow></mml:math>to cosmic explorer
Characterizing gravitational wave detector networks: from Ato cosmic explorer Open
Gravitational-wave observations by the laser interferometer gravitational-wave observatory (LIGO) and Virgo have provided us a new tool to explore the Universe on all scales from nuclear physics to the cosmos and have the massive potential…
View article: Multi-messenger astrophysics of black holes and neutron stars as probed by ground-based gravitational wave detectors: from present to future
Multi-messenger astrophysics of black holes and neutron stars as probed by ground-based gravitational wave detectors: from present to future Open
The ground-based gravitational wave (GW) detectors LIGO and Virgo have enabled the birth of multi-messenger GW astronomy via the detection of GWs from merging stellar-mass black holes (BHs) and neutron stars (NSs). GW170817, the first bina…
View article: Ar transport and blister growth kinetics in titania-doped germania-based optical coatings
Ar transport and blister growth kinetics in titania-doped germania-based optical coatings Open
Blistering is a phenomenon sometimes observed in sputtered-deposited thin films but seldom investigated in detail. Here, we consider the case of titania-doped germania (TGO)/silica multilayers deposited by ion beam sputtering. TGO is a can…
View article: Racial and Socioeconomic Disparities in Lung Transplant Waitlisting
Racial and Socioeconomic Disparities in Lung Transplant Waitlisting Open
View article: Assessing the role of biomarker feedback in a 12-week community weight management programme among overweight men: A pilot study
Assessing the role of biomarker feedback in a 12-week community weight management programme among overweight men: A pilot study Open
Background The primary objective of this study was to examine the feasibility of recruitment, retention, and delivery of biomarker feedback among men partaking in Shape Up, a physical activity for health programme. Secondarily, it explored…
View article: Multi-messenger Astrophysics of Black Holes and Neutron Stars as Probed by Ground-based Gravitational Wave Detectors: From Present to Future
Multi-messenger Astrophysics of Black Holes and Neutron Stars as Probed by Ground-based Gravitational Wave Detectors: From Present to Future Open
The ground-based gravitational wave (GW) detectors LIGO and Virgo have enabled the birth of multi-messenger GW astronomy via the detection of GWs from merging stellar-mass black holes (BHs) and neutron stars (NSs). GW170817, the first bina…
View article: Gravity Spy: lessons learned and a path forward
Gravity Spy: lessons learned and a path forward Open
The Gravity Spy project aims to uncover the origins of glitches, transient bursts of noise that hamper analysis of gravitational-wave data. By using both the work of citizen-science volunteers and machine learning algorithms, the Gravity S…
View article: Activation of Metabotropic Glutamate Receptor 3 Modulates Thalamo-accumbal Transmission and Rescues Schizophrenia-Like Physiological and Behavioral Deficits
Activation of Metabotropic Glutamate Receptor 3 Modulates Thalamo-accumbal Transmission and Rescues Schizophrenia-Like Physiological and Behavioral Deficits Open
View article: Titania Mixed with Silica: A Low Thermal-Noise Coating Material for Gravitational-Wave Detectors
Titania Mixed with Silica: A Low Thermal-Noise Coating Material for Gravitational-Wave Detectors Open
Coating thermal noise is one of the dominant noise sources in current gravitational wave detectors and ultimately limits their ability to observe weaker or more distant astronomical sources. This Letter presents investigations of TiO_{2} m…
View article: Event-by-Event Direction Reconstruction of Solar Neutrinos in a High Light-Yield Liquid Scintillator
Event-by-Event Direction Reconstruction of Solar Neutrinos in a High Light-Yield Liquid Scintillator Open
The direction of individual $^8$B solar neutrinos has been reconstructed using the SNO+ liquid scintillator detector. Prompt, directional Cherenkov light was separated from the slower, isotropic scintillation light using time information, …
View article: Gravity Spy: Lessons Learned and a Path Forward
Gravity Spy: Lessons Learned and a Path Forward Open
The Gravity Spy project aims to uncover the origins of glitches, transient bursts of noise that hamper analysis of gravitational-wave data. By using both the work of citizen-science volunteers and machine-learning algorithms, the Gravity S…
View article: Characterizing Gravitational Wave Detector Networks: From A$^\sharp$ to Cosmic Explorer
Characterizing Gravitational Wave Detector Networks: From A$^\sharp$ to Cosmic Explorer Open
Gravitational-wave observations by the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo have provided us a new tool to explore the Universe on all scales from nuclear physics to the cosmos and have the massive potential…
View article: Cosmic Explorer: A Submission to the NSF MPSAC ngGW Subcommittee
Cosmic Explorer: A Submission to the NSF MPSAC ngGW Subcommittee Open
Gravitational-wave astronomy has revolutionized humanity's view of the universe, a revolution driven by observations that no other field can make. This white paper describes an observatory that builds on decades of investment by the Nation…
View article: Review of Person, Thing, Robot by David Gunkel
Review of Person, Thing, Robot by David Gunkel Open
David Gunkel has been questioning the traditional assumptions about cyberspace, machines, and artificial intelligence models for over a decade now. As a moral philosopher and communications expert, Gunkel, rightly, challenges the tradition…
View article: Searching for the causes of anomalous Advanced LIGO noise
Searching for the causes of anomalous Advanced LIGO noise Open
Advanced LIGO and Advanced Virgo have detected gravitational waves from astronomical sources to open a new window on the Universe. To explore this new realm requires an exquisite level of detector sensitivity, meaning that the much stronge…
View article: Understanding the structure and dynamics of local powder packing density variations in metal additive manufacturing using set Voronoi analysis
Understanding the structure and dynamics of local powder packing density variations in metal additive manufacturing using set Voronoi analysis Open
In powder bed fusion (PBF), the global packing density is an important property used to quantify the bulk behaviour of the powder. However, packing density can be highly non-uniform across the PBF system. In some cases global packing densi…
View article: Hierarchical Control Strategy for Moving A Robot Manipulator Between Small Containers
Hierarchical Control Strategy for Moving A Robot Manipulator Between Small Containers Open
In this paper, we study the implementation of a model predictive controller (MPC) for the task of object manipulation in a highly uncertain environment (e.g., picking objects from a semi-flexible array of densely packed bins). As a real-ti…
View article: An Analytical Model for Stepwise Adiabatic Driver Energy Consumption
An Analytical Model for Stepwise Adiabatic Driver Energy Consumption Open
This paper presents a complete closed-form analytical model for determining the per-cycle energy consumption of a stepwise adiabatic drivers used for driving a capacitive load such as a power FET gate. The model takes into account the numb…
View article: A ±0.5-mV-Minimum-Input DC-DC Converter with Stepwise Adiabatic Gate-Drive and Efficient Timing Control for Thermoelectric Energy Harvesting
A ±0.5-mV-Minimum-Input DC-DC Converter with Stepwise Adiabatic Gate-Drive and Efficient Timing Control for Thermoelectric Energy Harvesting Open
This paper presents a step-up DC-DC converter that uses a stepwise gate-drive technique to reduce the power FET gate-drive energy by 82%, allowing positive efficiency down to an input voltage of ±0.5 mV—the lowest input voltage ever achiev…
View article: Fractal impedance for passive controllers: a framework for interaction robotics
Fractal impedance for passive controllers: a framework for interaction robotics Open
There is increasing interest in control frameworks capable of moving robots from industrial cages to unstructured environments and coexisting with humans. Despite significant improvement in some specific applications (e.g., medical robotic…
View article: A ±0.5-mV-Minimum-Input DC-DC Converter with Stepwise Adiabatic Gate-Drive and Efficient Timing Control for Thermoelectric Energy Harvesting
A ±0.5-mV-Minimum-Input DC-DC Converter with Stepwise Adiabatic Gate-Drive and Efficient Timing Control for Thermoelectric Energy Harvesting Open
This paper presents a step-up DC-DC converter that uses a stepwise gate-drive technique to reduce the power FET gate-drive energy by 82%, allowing positive efficiency down to an input voltage of ±0.5 mV—the lowest input voltage ever achiev…
View article: An Analytical Model for Stepwise Adiabatic Driver Energy Consumption
An Analytical Model for Stepwise Adiabatic Driver Energy Consumption Open
This paper presents a complete closed-form analytical model for determining the per-cycle energy consumption of a stepwise adiabatic drivers used for driving a capacitive load such as a power FET gate. The model takes into account the numb…
View article: A ±0.5-mV-Minimum-Input DC-DC Converter with Stepwise Adiabatic Gate-Drive and Efficient Timing Control for Thermoelectric Energy Harvesting
A ±0.5-mV-Minimum-Input DC-DC Converter with Stepwise Adiabatic Gate-Drive and Efficient Timing Control for Thermoelectric Energy Harvesting Open
This paper presents a step-up DC-DC converter that uses a stepwise gate-drive technique to reduce the power FET gate-drive energy by 82%, allowing positive efficiency down to an input voltage of ±0.5 mV—the lowest input voltage ever achiev…
View article: A ±0.5-mV-Minimum-Input DC-DC Converter with Stepwise Adiabatic Gate-Drive and Efficient Timing Control for Thermoelectric Energy Harvesting
A ±0.5-mV-Minimum-Input DC-DC Converter with Stepwise Adiabatic Gate-Drive and Efficient Timing Control for Thermoelectric Energy Harvesting Open
This paper presents a step-up DC-DC converter that uses a stepwise gate-drive technique to reduce the power FET gate-drive energy by 82%, allowing positive efficiency down to an input voltage of ±0.5 mV—the lowest input voltage ever achiev…
View article: NeuriCam: Key-Frame Video Super-Resolution and Colorization for IoT Cameras
NeuriCam: Key-Frame Video Super-Resolution and Colorization for IoT Cameras Open
We present NeuriCam, a novel deep learning-based system to achieve video capture from low-power dual-mode IoT camera systems. Our idea is to design a dual-mode camera system where the first mode is low-power (1.1 mW) but only outputs grey-…
View article: SYNCHROTRON-BASED ATTENUATED TOTAL REFLECTION INFRARED SPECTROSCOPY OF ARTIFICIAL GASOLINE BLEND
SYNCHROTRON-BASED ATTENUATED TOTAL REFLECTION INFRARED SPECTROSCOPY OF ARTIFICIAL GASOLINE BLEND Open