Galveston
The strange Wild West tale of the first cow-buffalo hybrid
Inside cowboy Charles Jesse "Buffalo" Jones's get-rich-quick scheme to restore the plains 100 years ago. By 1888, Charles Jesse "Buffalo" Jones had succeeded in crossbreeding a buffalo with cow, a hybrid he claimed would be as tasty as beef and as hardy as buffalo. Breakthroughs, discoveries, and DIY tips sent every weekday. The "cattalo" was a homely creature--stocky and shaggy, with a slight buffalo's hump and a cow's docile face. Charles "Buffalo" Jones invented the cow-buffalo hybrid in 1888.
- North America > Canada (0.16)
- North America > United States > Kansas (0.06)
- North America > United States > Texas > Galveston County > Galveston (0.04)
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Explainable AI-Enhanced Supervisory Control for Robust Multi-Agent Robotic Systems
Pirayeshshirazinezhad, Reza, Fathi, Nima
We present an explainable AI-enhanced supervisory control framework for multi-agent robotics that combines (i) a timed-automata supervisor for safe, auditable mode switching, (ii) robust continuous control (Lyapunov-based controller for large-angle maneuver; sliding-mode controller (SMC) with boundary layers for precision and disturbance rejection), and (iii) an explainable predictor that maps mission context to gains and expected performance (energy, error). Monte Carlo-driven optimization provides the training data, enabling transparent real-time trade-offs. We validated the approach in two contrasting domains, spacecraft formation flying and autonomous underwater vehicles (AUVs). Despite different environments (gravity/actuator bias vs. hydrodynamic drag/currents), both share uncertain six degrees of freedom (6-DOF) rigid-body dynamics, relative motion, and tight tracking needs, making them representative of general robotic systems. In the space mission, the supervisory logic selects parameters that meet mission criteria. In AUV leader-follower tests, the same SMC structure maintains a fixed offset under stochastic currents with bounded steady error. In spacecraft validation, the SMC controller achieved submillimeter alignment with 21.7% lower tracking error and 81.4% lower energy consumption compared to Proportional-Derivative PD controller baselines. At the same time, in AUV tests, SMC maintained bounded errors under stochastic currents. These results highlight both the portability and the interpretability of the approach for safety-critical, resource-constrained multi-agent robotics.
- North America > United States > Texas > Brazos County > College Station (0.14)
- North America > United States > Texas > Galveston County > Galveston (0.04)
- North America > United States > New Mexico (0.04)
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Virtual Dosimetrists: A Radiotherapy Training "Flight Simulator"
Gay, Skylar S., Netherton, Tucker, Marquez, Barbara, Mumme, Raymond, Gronberg, Mary, Parker, Brent, Pinnix, Chelsea, Shete, Sanjay, Cardenas, Carlos, Court, Laurence
Effective education in radiotherapy plan quality review requires a robust, regularly updated set of examples and the flexibility to demonstrate multiple possible planning approaches and their consequences. However, the current clinic-based paradigm does not support these needs. To address this, we have developed "Virtual Dosimetrist" models that can both generate training examples of suboptimal treatment plans and then allow trainees to improve the plan quality through simple natural language prompts, as if communicating with a dosimetrist. The dose generation and modification process is accurate, rapid, and requires only modest resources. This work is the first to combine dose distribution prediction with natural language processing; providing a robust pipeline for both generating suboptimal training plans and allowing trainees to practice their critical plan review and improvement skills that addresses the challenges of the current clinic-based paradigm.
- North America > United States > Texas > Harris County > Houston (0.04)
- North America > United States > Texas > Galveston County > Galveston (0.04)
- North America > United States > Texas > Dallas County > Dallas (0.04)
- North America > United States > Alabama > Jefferson County > Birmingham (0.04)
- Health & Medicine > Therapeutic Area > Oncology (1.00)
- Health & Medicine > Nuclear Medicine (1.00)
Bayesian Modeling of Zero-Shot Classifications for Urban Flood Detection
Franchi, Matt, Garg, Nikhil, Ju, Wendy, Pierson, Emma
Street scene datasets, collected from Street View or dashboard cameras, offer a promising means of detecting urban objects and incidents like street flooding. However, a major challenge in using these datasets is their lack of reliable labels: there are myriad types of incidents, many types occur rarely, and ground-truth measures of where incidents occur are lacking. Here, we propose BayFlood, a two-stage approach which circumvents this difficulty. First, we perform zero-shot classification of where incidents occur using a pretrained vision-language model (VLM). Second, we fit a spatial Bayesian model on the VLM classifications. The zero-shot approach avoids the need to annotate large training sets, and the Bayesian model provides frequent desiderata in urban settings - principled measures of uncertainty, smoothing across locations, and incorporation of external data like stormwater accumulation zones. We comprehensively validate this two-stage approach, showing that VLMs provide strong zero-shot signal for floods across multiple cities and time periods, the Bayesian model improves out-of-sample prediction relative to baseline methods, and our inferred flood risk correlates with known external predictors of risk. Having validated our approach, we show it can be used to improve urban flood detection: our analysis reveals 113,738 people who are at high risk of flooding overlooked by current methods, identifies demographic biases in existing methods, and suggests locations for new flood sensors. More broadly, our results showcase how Bayesian modeling of zero-shot LM annotations represents a promising paradigm because it avoids the need to collect large labeled datasets and leverages the power of foundation models while providing the expressiveness and uncertainty quantification of Bayesian models.
- North America > United States > New York > New York County > New York City (0.14)
- North America > United States > Texas > Galveston County > Galveston (0.14)
- North America > United States > California > Alameda County > Berkeley (0.14)
- (9 more...)
- Research Report > Experimental Study (1.00)
- Research Report > New Finding (0.87)
- Health & Medicine (1.00)
- Government > Regional Government > North America Government > United States Government (1.00)
- Transportation > Ground (0.93)
- (2 more...)
- Information Technology > Artificial Intelligence > Representation & Reasoning > Uncertainty > Bayesian Inference (1.00)
- Information Technology > Artificial Intelligence > Natural Language > Large Language Model (1.00)
- Information Technology > Artificial Intelligence > Machine Learning > Learning Graphical Models > Directed Networks > Bayesian Learning (1.00)
FloodDamageCast: Building Flood Damage Nowcasting with Machine Learning and Data Augmentation
Liu, Chia-Fu, Huang, Lipai, Yin, Kai, Brody, Sam, Mostafavi, Ali
Near-real time estimation of damage to buildings and infrastructure, referred to as damage nowcasting in this study, is crucial for empowering emergency responders to make informed decisions regarding evacuation orders and infrastructure repair priorities during disaster response and recovery. Here, we introduce FloodDamageCast, a machine learning (ML) framework tailored for property flood damage nowcasting. The framework leverages heterogeneous data to predict residential flood damage at a resolution of 500 meters by 500 meters within Harris County, Texas, during the 2017 Hurricane Harvey. To deal with data imbalance, FloodDamageCast incorporates a generative adversarial networks-based data augmentation coupled with an efficient machine learning model. The results demonstrate the framework's ability to identify high-damage spatial areas that would be overlooked by baseline models. Insights gleaned from flood damage nowcasting can assist emergency responders to more efficiently identify repair needs, allocate resources, and streamline on-the-ground inspections, thereby saving both time and effort. Keywords: Flood damage nowcasting Data augmentation Generative adversarial network Light gradient-boosting machine Imbalance learning 1 Introduction Flood hazards wreak havoc on urban areas, resulting in both physical destruction and loss of life in densely populated regions. In the United States alone, annual insurance claims have hovered around $1 billion per year over the past four decades [1]. This financial burden is expected to persist and potentially worsen due to the escalating frequency and intensity of flood events resulting from climate change [2, 3]. Rapid damage assessment of flooded areas is essential for swift response and recovery of affected communities. Emergency responders and public officials rely primarily on visual inspection to evaluate flood damage, incurring significantly delaying the recovery process. Expediting the flood damage assessment process is instrumental to accelerating post-disaster recovery efforts and bolstering community resilience against flood hazards, Currently, the main approach for estimating flood damage is based on specifying inundation depths then utilizing historical flood depth damage curves [4, 5]. The applicability of this approach for flood damage nowcasting, however, would be limited due to significant computation effort needed to model inundation depths using hydrological models based on the principles of hydrodynamics [6, 7, 8, 9].
- North America > United States > Texas > Harris County (0.24)
- North America > United States > Texas > Brazos County > College Station (0.14)
- North America > United States > Iowa (0.04)
- (2 more...)
- Government > Regional Government > North America Government > United States Government (1.00)
- Health & Medicine > Therapeutic Area (0.93)
- Banking & Finance > Insurance (0.67)
- Information Technology > Security & Privacy (0.66)
High-accuracy Vision-Based Attitude Estimation System for Air-Bearing Spacecraft Simulators
Ornati, Fabio, Di Domenico, Gianfranco, Panicucci, Paolo, Topputo, Francesco
Air-bearing platforms for simulating the rotational dynamics of satellites require highly precise ground truth systems. Unfortunately, commercial motion capture systems used for this scope are complex and expensive. This paper shows a novel and versatile method to compute the attitude of rotational air-bearing platforms using a monocular camera and sets of fiducial markers. The work proposes a geometry-based iterative algorithm that is significantly more accurate than other literature methods that involve the solution of the Perspective-n-Point problem. Additionally, auto-calibration procedures to perform a preliminary estimation of the system parameters are shown. The developed methodology is deployed onto a Raspberry Pi 4 micro-computer and tested with a set of LED markers. Data obtained with this setup are compared against computer simulations of the same system to understand and validate the attitude estimation performances. Simulation results show expected 1-sigma accuracies in the order of $\sim$ 12 arcsec and $\sim$ 37 arcsec for about- and cross-boresight rotations of the platform, and average latency times of 6 ms.
- North America > United States > Texas > Galveston County > Galveston (0.04)
- North America > United States > California > San Diego County > San Diego (0.04)
- Europe > United Kingdom > England > Cambridgeshire > Cambridge (0.04)
- Europe > Italy > Lombardy > Milan (0.04)
Meet NASA's new MOON rovers: Trio of miniature robots the size of a carry-on suitcase will create a 3D map of the lunar surface next year
Artemis was the twin sister of Apollo and goddess of the moon in Greek mythology. NASA has chosen her to personify its path back to the moon, which will see astronauts return to the lunar surface by 2025 - including the first woman and the next man. Artemis 1, formerly Exploration Mission-1, is the first in a series of increasingly complex missions that will enable human exploration to the moon and Mars. Artemis 1 will be the first integrated flight test of NASA's deep space exploration system: the Orion spacecraft, Space Launch System (SLS) rocket and the ground systems at Kennedy Space Center in Cape Canaveral, Florida. Artemis 1 will be an uncrewed flight that will provide a foundation for human deep space exploration, and demonstrate our commitment and capability to extend human existence to the moon and beyond.
- North America > United States > Florida > Brevard County > Cape Canaveral (0.24)
- North America > United States > Michigan > Kent County > Grand Rapids (0.05)
- North America > United States > California > Los Angeles County > Los Angeles (0.05)
- (8 more...)
- Government > Space Agency (1.00)
- Government > Regional Government > North America Government > United States Government (1.00)
Hyperbolic Image-Text Representations
Desai, Karan, Nickel, Maximilian, Rajpurohit, Tanmay, Johnson, Justin, Vedantam, Ramakrishna
Visual and linguistic concepts naturally organize themselves in a hierarchy, where a textual concept "dog" entails all images that contain dogs. Despite being intuitive, current large-scale vision and language models such as CLIP do not explicitly capture such hierarchy. We propose MERU, a contrastive model that yields hyperbolic representations of images and text. Hyperbolic spaces have suitable geometric properties to embed tree-like data, so MERU can better capture the underlying hierarchy in image-text datasets. Our results show that MERU learns a highly interpretable and structured representation space while being competitive with CLIP's performance on standard multi-modal tasks like image classification and image-text retrieval.
- Europe > Austria > Vienna (0.14)
- North America > United States > New York > New York County > New York City (0.14)
- North America > United States > California > San Francisco County > San Francisco (0.14)
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- Leisure & Entertainment (1.00)
- Consumer Products & Services (1.00)
- Energy (0.67)
- (2 more...)
ASPER: Answer Set Programming Enhanced Neural Network Models for Joint Entity-Relation Extraction
Le, Trung Hoang, Cao, Huiping, Son, Tran Cao
A plethora of approaches have been proposed for joint entity-relation (ER) extraction. Most of these methods largely depend on a large amount of manually annotated training data. However, manual data annotation is time consuming, labor intensive, and error prone. Human beings learn using both data (through induction) and knowledge (through deduction). Answer Set Programming (ASP) has been a widely utilized approach for knowledge representation and reasoning that is elaboration tolerant and adept at reasoning with incomplete information. This paper proposes a new approach, ASP-enhanced Entity-Relation extraction (ASPER), to jointly recognize entities and relations by learning from both data and domain knowledge. In particular, ASPER takes advantage of the factual knowledge (represented as facts in ASP) and derived knowledge (represented as rules in ASP) in the learning process of neural network models. We have conducted experiments on two real datasets and compare our method with three baselines. The results show that our ASPER model consistently outperforms the baselines.
- North America > United States > Texas > Galveston County > Galveston (0.04)
- North America > United States > New Mexico > Doña Ana County > Las Cruces (0.04)
- Asia > China (0.04)
A Multiple Parameter Linear Scale-Space for one dimensional Signal Classification
Luxemburg, Leon A., Damelin, Steven B.
Scale-space filtering provides a powerful framework for the structural feature extraction, and classification and recognition of waveforms. It is based on convolving a signal with a one-parametric family of kernels and the convolutions can be used to construct certain trees to correspond to the original signal ([5,17,23,26,28]). In this article we solve the following important problems: (I) We construct a maximal set of kernels that allows us to construct trees and have the property that the signals with the same shape result in equivalent trees. It turns out that this maximal set of kernels is a set of pth frac tional derivatives of a Gaussian.
- Europe > United Kingdom > England (0.04)
- North America > United States > New York > Nassau County > Mineola (0.04)
- North America > United States > Texas > Galveston County > Galveston (0.04)
- (6 more...)