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Recently, many software tools have been developed to perform quantification in LC-MS analyses. However, most of them are specific to either a quantification strategy (e.g. label-free or isotopic labelling) or a mass-spectrometry system…

Quantitative Methods · Quantitative Biology 2011-09-27 Benoît Valot , Olivier Langella , Edlira Nano , Michel Zivy

The large quantity and high quality of modern radio and infrared line observations require efficient modeling techniques to infer physical and chemical parameters such as temperature, density, and molecular abundances. We present a computer…

The PICsIT detector onboard the INTEGRAL satellite was designed to provide information about emission in the soft gamma-ray band for many bright sources. Due to strong and variable instrumental background, only 4 objects have been detected…

Astrophysics · Physics 2009-11-13 Piotr Lubinski

Energy resolved neutron imaging (ERNI) is an advanced neutron radiography technique capable of non-destructively extracting spatial isotopic information within a given material. Energy-dependent radiography image sequences can be created by…

Image and Video Processing · Electrical Eng. & Systems 2021-10-07 Thilo Balke , Alexander M. Long , Sven C. Vogel , Brendt Wohlberg , Charles A. Bouman

Multi-ion optical clocks offer the possibility of overcoming the low signal-to-noise ratio of single-ion clocks, while still providing low systematic uncertainties. We present simultaneous spectroscopy of up to four ${}^{115}$In${}^+$ clock…

We have built a vacuum double crystal spectrometer, which coupled to an electron-cyclotron resonance ion source, allows to measure low-energy x-ray transitions in highly-charged ions with accuracies of the order of a few parts per million.…

The proton, deuteron and triton masses can be determined relative to the electron mass via rovibrational spectroscopy of molecular hydrogen ions. This has to occur via comparison of the experimentally measured transition frequencies and the…

Atomic Physics · Physics 2025-05-13 Stephan Schiller , Jean-Philippe Karr

Linear probes are widely used to interpret and evaluate neural representations, yet their reliability remains unclear, as probes may appear accurate in some regimes but collapse unpredictably in others. We uncover a spectral mechanism…

Machine Learning · Statistics 2025-11-21 William Hao-Cheng Huang

Environmental monitoring robots often need to estimate data fields (e.g., salinity, temperature, bathymetry) under tight resource constraints. Classical boustrophedon lawnmower surveys provide geometric coverage guarantees but can waste…

Robotics · Computer Science 2026-05-28 Kalvik Jakkala , Saurav Agarwal , Jason O'Kane , Srinivas Akella

This article introduces a novel probability distribution model, namely Complex Isotropic {\alpha}-Stable-Rician (CI{\alpha}SR), for characterizing the data histogram of synthetic aperture radar (SAR) images. Having its foundation situated…

Image and Video Processing · Electrical Eng. & Systems 2023-06-08 Mutong Li , Ercan Engin Kuruoglu

The robust instability of an unstable plant subject to stable perturbations is of significant importance and arises in the study of sustained oscillatory phenomena in nonlinear systems. This paper analyzes the robust instability of linear…

Systems and Control · Electrical Eng. & Systems 2024-07-08 Chung-Yao Kao , Sei Zhen Khong , Shinji Hara , Yu-Jen Lin

Recently, sparsity-based algorithms are proposed for super-resolution spectrum estimation. However, to achieve adequately high resolution in real-world signal analysis, the dictionary atoms have to be close to each other in frequency,…

Machine Learning · Statistics 2015-06-05 Yiyuan She , Huanghuang Li , Jiangping Wang , Dapeng Wu

Observations of neutron stars may be used to study aspects of extremely dense matter, specifically a possibility of phase transitions to exotic states, such as de-confined quarks. We present a novel data analysis method for detecting…

High Energy Astrophysical Phenomena · Physics 2022-12-21 Filip Morawski , Michał Bejger

Recently a new experimental program of novel systematic studies of light hypernuclei using pionic decay was established at JLab (Study of Light Hypernuclei by Pionic Decay at JLab, JLab Experiment PR-08-012). The highlights of the proposed…

Nuclear Experiment · Physics 2016-09-08 Amur Margaryan

We present a major update of the program pySecDec, a toolbox for the evaluation of dimensionally regulated parameter integrals. The new version enables the evaluation of multi-loop integrals as well as amplitudes in a highly distributed and…

High Energy Physics - Phenomenology · Physics 2023-12-22 G. Heinrich , S. P. Jones , M. Kerner , V. Magerya , A. Olsson , J. Schlenk

The characterization of exoplanet requires reliable determination of the fundamental parameters of their host stars. Spectral fitting plays an important role in this process. For the majority of stellar parameters matching synthetic spectra…

Solar and Stellar Astrophysics · Physics 2023-03-29 Ansgar Wehrhahn , Nikolai Piskunov , Tanja Ryabchikova

The antiProton Unstable Matter Annihilation experiment (PUMA) at CERN aims at investigating the nucleon composition in the matter density tail of radioactive as well as stable isotopes by use of low-energy antiproton-nucleon annihilation…

Instrumentation and Detectors · Physics 2023-11-29 M. Schlaich , J. Fischer , P. Fischer , C. Klink , A. Obertelli , A. Schmidt , L. Schweikhard , F. Wienholtz

We consider three recent large-scale calculations for the radiative and electron-impact excitation data of N IV, carried out with different methods and codes. The scattering calculations employed the relativistic Dirac $R$-matrix (DARC)…

Solar and Stellar Astrophysics · Physics 2019-02-20 G. Del Zanna , L. Fernandez-Menchero , N. R. Badnell

To address the the problem of calibration of instrument systematics in transit light curves, we present the Python package ExoTiC-ISM. Transit spectroscopy can reveal many different chemical components in exoplanet atmospheres, but such…

Instrumentation and Methods for Astrophysics · Physics 2020-07-16 Iva Laginja , Hannah R. Wakeford

A spectral decomposition method has been implemented to identify and quantify isotopic source terms in high-resolution gamma-ray spectroscopy in static geometry and shielding scenarios. Monte-Carlo simulations were used to build the…

Instrumentation and Detectors · Physics 2022-06-29 J. T. Matta , A. J. Rowe , M. P. Dion , M. J. Willis , A. D. Nicholson , D. E. Archer , H. H. Wightman
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