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Source confusion defines a practical depth to which to take large-area extragalactic surveys. 3D imaging spectrometers with positional as well as spectral information, however, potentially provide a means by which to use line emission to…

Instrumentation and Methods for Astrophysics · Physics 2015-05-18 Gwenifer Raymond , Kate G. Isaak , Dave Clements , Adam Rykala , Chris Pearson

We investigate the problem of high frequency (HF) source localization using the time-difference-of-arrival (TDOA) observations of ionosphere-refracted radio rays based on quasi-parabolic (QP) modeling. An unresolved but pertinent issue in…

Signal Processing · Electrical Eng. & Systems 2023-02-13 Wenxin Xiong , Christian Schindelhauer , Hing Cheung So

High-precision stellar analyses require hydrodynamic 3D modeling. Such models predict changes across stellar disks of spectral line shapes, asymmetries, and wavelength shifts. For testing models in stars other than the Sun, spatially…

Solar and Stellar Astrophysics · Physics 2021-04-28 Dainis Dravins , Hans-Günter Ludwig , Bernd Freytag

We describe the observing simulation software FISVI (FIS Virtual Instrument), which was developed for the Far-Infrared Surveyor (FIS) that will be on the Japanese infrared astronomy mission ASTRO-F. The FISVI has two purposes: one is to…

The FAIR Principles are a set of good practices to improve the reproducibility and quality of data in an Open Science context. Different sets of indicators have been proposed to evaluate the FAIRness of digital objects, including datasets…

Digital Libraries · Computer Science 2023-06-28 Fernando Aguilar Gómez , Isabel Bernal

In the ever-changing realm of research software development, it is crucial for the scientific community to grasp current trends to identify gaps that can potentially hinder scientific progress. The adherence to the FAIR (Findable,…

Software Engineering · Computer Science 2025-10-08 Eva Martín del Pico , Josep Lluís Gelpí , Salvador Capella-Gutiérrez

Source-free domain adaptation (SFDA) aims to adapt a classifier to an unlabelled target data set by only using a pre-trained source model. However, the absence of the source data and the domain shift makes the predictions on the target data…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Subhankar Roy , Martin Trapp , Andrea Pilzer , Juho Kannala , Nicu Sebe , Elisa Ricci , Arno Solin

The freud Python package is a powerful library for analyzing simulation data. Written with modern simulation and data analysis workflows in mind, freud provides a Python interface to fast, parallelized C++ routines that run efficiently on…

Three cornerstones for the 3D data support in the Virtual Observatory are: (1) data model to describe them, (2) data access services providing access to fully-reduced datasets, and (3) client applications which can deal with 3D data.…

This study presents a novel method for source extraction, referred to as the similarity-and-independence-aware beamformer (SIBF). The SIBF extracts the target signal using a rough magnitude spectrogram as the reference signal. The advantage…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-22 Atsuo Hiroe

We present an algorithm capable of detecting diffuse, dim sources of any size in an astronomical image. These sources often defeat traditional methods for source finding, which expand regions around points of high intensity. Extended…

Instrumentation and Methods for Astrophysics · Physics 2016-01-05 T. Butler-Yeoman , M. Frean , C. P. Hollitt , D. W. Hogg , M. Johnston-Hollitt

Channel prediction permits to acquire channel state information (CSI) without signaling overhead. However, almost all existing channel prediction methods necessitate the deployment of a dedicated model to accommodate a specific…

Signal Processing · Electrical Eng. & Systems 2025-03-20 Boxun Liu , Shijian Gao , Xuanyu Liu , Xiang Cheng , Liuqing Yang

Spectropolarimetry, the observation of polarization and intensity as a function of wavelength, is a powerful tool in stellar astrophysics. It is particularly useful for characterizing stars and circumstellar material, and for tracing the…

Despite image reconstruction becoming more widespread when interpreting OIFITS Data, model fitting in u,v space often remains the best way to interpret data, either because of the sparsity of the data, or because a quantitative measurement…

Instrumentation and Methods for Astrophysics · Physics 2022-07-25 Antoine Mérand

Multifractal Detrended Fluctuation Analysis (MFDFA) is a powerful and widely used technique for characterizing the scaling properties and long-range correlations of complex time series. However, its application often involves significant…

Domain adaptation aims to alleviate the domain shift when transferring the knowledge learned from the source domain to the target domain. Due to privacy issues, source-free domain adaptation (SFDA), where source data is unavailable during…

Computer Vision and Pattern Recognition · Computer Science 2023-10-16 Jiamei Liu , Han Sun , Yizhen Jia , Jie Qin , Huiyu Zhou , Ningzhong Liu

Deep learning models often face challenges when handling real-world image corruptions. In response, researchers have developed image corruption datasets to evaluate the performance of deep neural networks in handling such corruptions.…

Computer Vision and Pattern Recognition · Computer Science 2023-06-13 Harshitha Machiraju , Michael H. Herzog , Pascal Frossard

Despite being one of the most basic tasks in software development, debugging is still performed in a mostly manual way, leading to high cost and low performance. To address this problem, researchers have studied promising approaches, such…

Software Engineering · Computer Science 2017-11-28 Higor A. de Souza , Marcos L. Chaim , Fabio Kon

Context: Software metrics, as one form of static analyses, is a commonly used approach in software engineering in order to understand the state of a software system, in particular to identify potential areas prone to defects. Family-based…

Software Engineering · Computer Science 2021-10-13 Sascha El-Sharkawy , Adam Krafczyk , Klaus Schmid