We used historical data to build two types of model that predict Ground Delay Program implementation and also produce insights into how and why those implementation decisions are made. More specifically, we built behavioral cloning and inverse reinforcement learning models that predict hourly Ground Delay Program implementation at Newark Liberty International and San Francisco International air...

We consider the polaron model of the relativistic quantum electrodynamics with a fixed total momentum. We analyze some properties of the ground state energy of the model, and show that the polaron model has a ground state under a condition which includes conditions for an infrared and an ultraviolet cutoff for photon momenta. In particular, we show that the model with zero total momentum, a non...

PURPOSE To compare core muscle activity during resistance exercises performed on stable ground vs. the BOSU Balance Trainer. METHODS Twelve trained men performed the back squat, dead lift, overhead press, and curl lifts. The activity of the rectus abdominis, external oblique abdominis, transversus abdominis/internal oblique abdominis, and erector spinae muscles was assessed. Subjects performe...

On any given day, traffic flow managers must often rely on past experience and intuition when developing traffic flow management initiatives that mitigate imbalances between aircraft demand and weather impacted airport capacity. The goal of this study was to build on recent efforts to apply data mining classification and clustering algorithms to vast archives of historical weather and air traff...

Estimates of solar irradiance at the earth’s surface from satellite observations are useful for planning both the deployment of distributed photovoltaic systems and their integration into electricity grids. In order to use surface solar irradiance from satellites for these purposes, validation of its accuracy against ground observations is needed. In this study, satellite estimates of surface s...

The availability of multi-temporal ERS one-day coherence images and extensive in situ data from test sites located in Sweden, Finland and Siberia has allowed a first assessment on the consistency of stem volume retrieval at stand level within the boreal zone. The test sites are characterised by different forest structure and ground properties. The coherence data had baselines up to 374 m. The r...

The Lights Out Ground Operations System (LOGOS) system is a prototype multi-agent system for automating satellite ground operations systems. It uses a community of software agents that work cooperatively to perform ground system operations normally done by human operators who are using traditional ground station software tools, such as orbit generators, schedulers and command sequence planners....

Satellite assessments of particulate matter (PM) air quality that use solar reflectance methods are dependent on availability of clear sky; in other words, mass concentrations of PM less than 2.5 microm in aerodynamic diameter (PM2.5) cannot be estimated from satellite observations under cloudy conditions or bright surfaces such as snow/ice. Whereas most ground monitors measure PM2.5 concentrat...

satellite imagery was used as a rapid and spatially explicit method to delineate crop residue cover and to estimate the use and intensity of conservation tillage. the potential of multispectral high-spatial resolution of worldview-2 local data was evaluated using 11 satellite spectral indices and linear spectral unmixing analysis (lsua). experimental plots were examined; residue cover was measu...