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We present a novel framework for spatiotemporal photovoltaic (PV) power forecasting and use it to evaluate the reliability, sharpness, and overall performance of seven intraday PV power nowcasting models. The model suite includes…

Machine Learning · Computer Science 2026-01-09 Luca Lanzilao , Angela Meyer

The lack of long and reliable time series of solar spectral irradiance (SSI) measurements makes an accurate quantification of solar contributions to recent climate change difficult. Whereas earlier SSI observations and models provided a…

The deduction from solar flare X-ray photon spectroscopic data of the energy dependent model-independent spectral index is considered as an inverse problem. Using the well developed regularization approach we analyze the energy dependency…

Astrophysics · Physics 2009-11-11 Eduard P. Kontar , Alexander L. MacKinnon

We develop a fast technique based on the generalized slow roll (GSR) approach for computing the curvature bispectrum of inflationary models with features. We show that all triangle configurations can be expressed in terms of three simple…

Cosmology and Nongalactic Astrophysics · Physics 2012-03-02 Peter Adshead , Wayne Hu , Cora Dvorkin , Hiranya V. Peiris

Shortwave infrared (SWIR) has various applications, including night vision, remote sensing, and medical imaging. SWIR organic photodetectors (OPDs) offer advantages such as flexibility, cost-effectiveness, and tunable properties, however,…

Accurate day-ahead solar irradiance forecasting is essential for integrating solar energy into the power grid. However, it remains challenging due to the pronounced diurnal cycle and inherently complex cloud dynamics. Current methods either…

Machine Learning · Computer Science 2026-04-30 Ziqing Ma , Kai Ying , Xinyue Gu , Tian Zhou , Tianyu Zhu , Haifan Zhang , Peisong Niu , Zheng Wang , Cong Bai , Liang Sun

Stellar seismology reveals some interior properties of thousands of solar-type stars but the solar seismic sound speed stays puzzling since a decade as it disagrees with the Standard Solar Model (SSM) prediction. One of the explanations of…

Solar and Stellar Astrophysics · Physics 2015-09-14 M. Le Pennec , X. Ribeyre , J. -E. Ducret , S. Turck-Chièze

The SIRTF InfraRed Spectrograph (IRS) is faced with many of the same calibration challenges that were experienced in the ISO SWS calibration program, owing to similar wavelength coverage and overlapping spectral resolutions of the two…

Astrophysics · Physics 2007-05-23 P. W. Morris , V. Charmandaris , T. Herter , L. Armus , J. Houck , G. Sloan

We present a novel method, based on the Saunderson corrections, to predict the reflectance between a liquid interface and a dielectric diffuser. In this method, the diffuse properties of the dielectric are characterized using a single…

Optics · Physics 2023-05-08 C. Silva , R. Cabrita , V. N. Solovov , P. Brás , A. Lindote , G. Pereira , M. I. Lopes

This research tackles the challenges of estimating Building-Integrated Photovoltaics (BIPV) potential across various temporal and spatial scales, accounting for different geographical climates and urban morphology. We introduce a holistic…

Information Retrieval · Computer Science 2024-12-03 Qing Yu , Kechuan Dong , Zhiling Guo , Jiaxing Li , Hongjun Tan , Yanxiu Jin , Jian Yuan , Haoran Zhang , Junwei Liu , Qi Chen , Jinyue Yan

Renewable energy forecasting is attaining greater importance due to its constant increase in contribution to the electrical power grids. Solar energy is one of the most significant contributors to renewable energy and is dependent on solar…

Machine Learning · Computer Science 2025-10-08 V. Gunasekaran , K. K. Kovi , S. Arja , R. Chimata

The design process of photovoltaic (PV) modules can be greatly enhanced by using advanced and accurate models in order to predict accurately their electrical output behavior. The main aim of this paper is to investigate the application of…

Neural and Evolutionary Computing · Computer Science 2013-08-13 Francesco Bonanno , Giacomo Capizzi , Christian Napoli , Giorgio Graditi , Giuseppe Marco Tina

An inert sphere of a few meters diameter, placed in a special stable geosynchronous orbit in perpetuo, can be used for a variety of scientific experiments. Ground-based observations of such a sphere, "GeoSphere", can resolve very difficult…

Solar and Stellar Astrophysics · Physics 2015-06-23 Philip G. Judge , Ricky Egeland

Photonic systems based on microring resonators have a fundamental constrain given by the strict relationship among free spectral range (FSR), total quality factor (QT) and resonator size, intrinsically making filter spacing, photonic…

Intelligent reflecting surfaces (IRS) have emerged as a promising technology to enhance the performance of wireless communication systems. By actively manipulating the wireless propagation environment, IRS enables efficient signal…

Signal Processing · Electrical Eng. & Systems 2023-08-21 Chandan Kumar Sheemar , Sourabh Solanki , Jorge Querol , Sumit Kumar , Symeon Chatzinotas

Inverse rendering methods that account for global illumination are becoming more popular, but current methods require evaluating and automatically differentiating millions of path integrals by tracing multiple light bounces, which remains…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Saeed Hadadan , Geng Lin , Jan Novák , Fabrice Rousselle , Matthias Zwicker

We propose a new empirical method to estimate the total far-infrared flux of galaxies from the spectral energy distribution (SED) at wavelengths lambda shorter than 100 microns. It is difficult to derive the total far-infrared luminosity…

Astrophysics · Physics 2015-06-24 Hirohisa Nagata , Hiroshi Shibai , Tsutomu T. Takeuchi , Takashi Onaka

There are two alternative methods used in literature to calculate the incoherent part of the spectrum of light scattered by an atomic system. In the first, one calculates the spectrum of the total light scattered by the system and obtains…

Quantum Physics · Physics 2015-05-13 Z. Ficek

Silicon's bandgap inherently restricts its photodetection to wavelengths below 1100 nm, necessitating the integration of costly III-V semiconductors for short-wave infrared applications. Hyperdoping silicon beyond the solid solubility limit…

As photovoltaic power is expanding rapidly worldwide, it is imperative to assess its promise under future climate scenarios. While a great deal of research has been devoted to trends of mean solar radiation, less attention has been paid to…

Atmospheric and Oceanic Physics · Physics 2020-11-13 Jun Yin , Annalisa Molini , Amilcare Porporato
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