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  • 1
    Unknown
    Tokyo : Terra Scientific Publishing Company
    Keywords: cosmic rays ; astrophysics
    Pages: Online-Ressource (VIII, 476 Seiten)
    Language: English
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  • 2
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-30
    Description: The present reprint contains all of the articles in the second edition of the Special Issue titled “Statistical Data Modeling and Machine Learning with Applications II”. This Special Issue belongs to the “Mathematics and Computer Science” Section and aims to publish research on the theory and application of statistical data modeling and machine learning. New mathematical methods and approaches, new algorithms and research frameworks, and their applications aimed at solving diverse and nontrivial practical problems are proposed and developed in this SI. We believe that the chosen papers are attractive and useful to the international scientific community and will contribute to further research in the field of statistical data modeling and machine learning.
    Keywords: forecasting model ; electricity energy consumption ; grey model ; artificial neural network ; machine learning ; rotation CART ensemble ; bagging ; boosting ; arcing ; simplified selective ensemble ; linear stacked model ; IoV ; xNN ; K-MEANS ; anomaly detection ; single-index models ; composite quantile regression ; SCAD ; Laplace error penalty (LEP) ; causality ; Bayesian networks ; scalability ; group lasso penalty ; data integration ; network estimation ; stability selection ; time series model ; wavelet transform ; neural network NARX ; ionospheric parameters ; gambling ; jackpot ; multidimensional integrals ; Monte Carlo methods ; lattice sequences ; digital sequences ; surface approximation ; surface segmentation ; surface denoising ; gaussian process latent variable model ; line geometry ; line elements ; regression ; classification ; prediction ; meteorological parameters ; traffic incidents ; multi-agent architecture ; air pollution ; random forest ; ARIMA errors ; MIMO averaging strategy ; multi-step ahead prediction ; unmeasured forecast ; Explainableartificial intelligence ; credit card frauds ; deep learning ; long short-term memory ; fraud classification ; lung cancer ; tumor ; CT image ; one-stage detector ; YOLO ; multi-scale ; receptive field ; data analysis ; decision trees ; LightGBM ; SHAP ; leisure time ; influencing factors ; time allocation ; neural networks ; cosmic rays ; space weather ; n/a ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNT Media, entertainment, information and communication industries::KNTX Information technology industries ; thema EDItEUR::U Computing and Information Technology::UY Computer science
    Language: English
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  • 3
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: This Special Issue is dedicated to Professor Reinhard Schlickeiser on the occasion of his 70th birthday. Reinhard Schlickeiser’s internationally well-recognized work, comprising several hundred research articles and the comprehensive monograph “Cosmic Ray Astrophysics,” has had a lasting influence in several areas of astrophysics. He has also inspired a large number of junior researchers, many of whom are now pursuing successful academic careers. Over the last few decades, he has motivated and established many fruitful collaborations that have triggered new ideas and provided new insights into various plasma and astrophysical topics. This Special Issue aims to present original papers by Reinhard Schlickeiser’s collaborators that document the breadth of his scientific accomplishments and the subsequent studies that he has directly or indirectly influenced as a collaborator or as a teacher. This Special Issue may serve as inspiration for others to follow in his path and to accept the challenges awaiting them in the many areas of astrophysics that have been, for many years, Reinhard’s turf.
    Keywords: Langmuir waves ; Landau damping ; particle wave interactions ; space physics ; plasma physics ; n/a ; nucleus-acoustic waves ; nonlinear waves ; nonplanar geometries ; non-thermal radiation mechanisms ; relativistic jets ; relativistic processes ; BL Lacertae objects ; active galaxies ; blazars ; diffusive shock acceleration ; radiative transport ; gamma-rays ; solar wind ; plasmas ; instabilities ; waves ; cosmic rays ; galactic anti-matter ; solar modulation ; solar cycle ; dissipative solitary waves ; magnetized plasma ; superthermal trapped electrons ; kappa distribution ; Schamel equation ; oblique propagation of electrostatic plasma waves ; suprathermals ; cosmic-ray transport ; turbulence ; plasma waves ; particle-in-cell simulations ; automated driving ; data-driven modeling ; deep learning ; scene prediction ; trajectory prediction ; Alfvén waves ; wave–wave interactions ; magnetic loops ; solar corona ; particle transport ; numerical methods ; modelling ; cosmic-ray diffusion ; active galactic nuclei (AGN) ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PH Physics
    Language: English
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  • 4
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: This Special Issue, “Advances in Environmental Applied Physics”, collected original papers from eminent researchers in the field of environmental pollutants, which constitute a health risk to the population, increasing the likelihood of incurring cancer.
    Keywords: natural radioactivity ; river sediments ; gamma spectroscopy ; radiological risks ; background radioactivity ; multivariate statistics ; flour ; natural and anthropogenic radioactivity ; heavy metals contamination ; mineral concentration ; high-purity germanium gamma spectrometry ; inductively-coupled plasma mass spectrometry ; inductively-coupled plasma emission spectroscopy ; effective dose ; ingestion ; radon exhalation ; equivalent dose rate ; car parking lots ; Monte Carlo simulation ; complex DNA damage ; double strand breaks ; ionizing radiation ; radiological incident ; radionuclide ; absorbed dose ; 137-caesium ; surface activity ; drinking water ; radioactivity ; uranium ; High Purity Germanium (HPGe) gamma-ray spectrometry ; Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) ; baby food ; gamma spectrometry ; activity concentration ; radiological hazard ; cosmic rays ; ionization ; radiation ; atmosphere ; solar cycle ; flight level ; aviation ; pyroclastic products ; potentially toxic elements ; pollution ; Antarctica ; radiation detector ; neutron measurement ; portable monitoring system ; basalt aggregate for concrete ; radiological risk ; mineralogy ; HPGe γ-ray spectrometry ; heavy metals ; inductively coupled plasma mass spectrometry ; X-ray diffraction ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology
    Language: English
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  • 5
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2022-05-06
    Description: The galactic cosmic–ray spectrum extends over 14 orders of magnitudes in energy and about 12 orders of magnitude in intensity, and it can be studied using two different methods: via the “direct detection” of the primary cosmic rays in space or at high altitude and via the “indirect detection” of secondary particles, namely the extensive air showers produced by a primary cosmic–ray particle impinging the atmosphere. In this Special Issue, both direct and indirect measurements are presented via from various experiments. Emphasis is placed on low-energy electrons and protons that are detected in flight as well as during geomagnetic storms. As for indirect detection, the muon flux determination and modulation at ground level are described in great detail. Some of the most interesting results are hereby presented, and a couple of new techniques in cosmic–ray detection are reported.
    Keywords: cosmic rays ; Extensive Air Showers ; particle detectors ; Cosmic Ray Ensembles ; ionosphere ; ELF/VLF waves ; energetic electron precipitations ; storm-time feature ; CSES ; trapped particles ; South Atlantic Anomaly ; AE9/AP9/SPM models ; radiation belts ; Poisson data ; time series ; quasi-Gaussian filter ; digital filtering ; optimization ; global minimization ; annealing simulation algorithm ; space weather ; geomagnetic storms ; LEO satellites ; digital gamma-rays spectrometer ; cosmic veto ; active shield ; muons ; muon flux periodicity ; atmospheric neutrons ; radiation dose ; passengers and flight crew ; ultrathin calorimeter ; direct measurements ; energy reconstruction ; PAMELA ; shower development universality ; cosmic ray physics ; multi-messenger astrophysics ; extensive air showers ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science
    Language: English
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  • 6
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-01-05
    Description: The theory of quantum chromo dynamics (QCD), an organic part of the standard model (SM) of particle physics, has been validated by many theoretical and experimental studies. The strongly coupled QCD dynamics controls colored particles’ (quarks and gluons) collective motion at large spacetime separations and the formation of colorless composite states (hadrons). While QCD theory and the related phenomenology aspects are being intensively studied in laboratory measurements, the possible connections of this important layer of knowledge to cosmology remain rather vague and largely unexplored. No doubt, the physical vacuum has been transformed many times throughout the lifetime of the universe and has affected its history through a sequence of events, such as the cosmic inflation, phase transitions, and the dark-energy-dominated expansion. Strong interactions could play an important role in some of these cosmological events. In particular, the emergence of a new state of matter called the quark-gluon plasma at the LHC is often suggested to provide an important source of empirical knowledge to what the universe looked like in the first few moments after the Big Bang. This Special Issue aims at creating an overview of the recent progress in these directions by focusing on the novel implications of quantum chromo, or more generally, Yang–Mills (YM) dynamics, to the physics of the early universe and critical phenomena in cosmology.
    Keywords: dynamics of phase transitions ; spinodal instability ; heavy-ion collisions ; neutron stars ; dark energy ; non-Abelian gauge theory ; condensate ; QCD ; DGLAP equations ; physics beyond the standard model ; tensorgluons ; extended DGLAP equations ; tensorgluon splitting functions ; neutron star ; equation of state ; many-body methods of nuclear matter ; neutron-skin thickness ; GW170817 ; Weyl gravity ; renormalization group ; inflation ; light scalar fields ; axial anomaly ; SU(2) Yang–Mills thermodynamics ; de-percolation of axionic lumps ; cosmological and galactic dark-matter densities ; cosmology ; particle physics ; particle symmetry ; stable particles ; dark matter ; cosmic rays ; QCD in the early universe ; phase transitions ; hydrodynamical evolution ; equation of state of super-dense matter ; classical Yang-Mills fields ; Dark Energy ; Dark Matter ; gluon condensate ; effective Yang-Mills action ; cosmic inflation ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PH Physics
    Language: English
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  • 7
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-01-05
    Description: This volume celebrates the 30th anniversary of the first very-high energy (VHE) gamma-ray Source detection: the Crab Nebula, observed by the pioneering ground-based Cherenkov telescope Whipple, at teraelectronvolts (TeV) energies, in 1989. As we entered a new era in TeV astronomy, with the imminent start of operations of the Cherenkov Telescope Array (CTA) and new facilities such as LHAASO and the proposed Southern Wide-Field Gamma-ray Observatory (SWGO), we conceived of this volume as a broad reflection on how far we have evolved in the astrophysics topics that dominated the field of TeV astronomy for much of recent history.In the past two decades, H.E.S.S., MAGIC and VERITAS pushed the field of TeV astronomy, consolidating the field of TeV astrophysics, from few to hundreds of TeV emitters. Today, this is a mature field, covering almost every topic of modern astrophysics. TeV astrophysics is also at the center of the multi-messenger astrophysics revolution, as the extreme photon energies involved provide an effective probe in cosmic-ray acceleration, propagation and interaction, in dark matter and exotic physics searches. The improvement that CTA will carry forward and the fact that CTA will operate as the first open observatory in the field, mean that gamma-ray astronomy is about to enter a new precision and productive era.This book aims to serve as an introduction to the field and its state of the art, presenting a series of authoritative reviews on a broad range of topics in which TeV astronomy provided essential contributions, and where some of the most relevant questions for future research lie.
    Keywords: gamma ray astronomy ; imaging atmospheric Cherenkov technique ; TeV gamma-rays ; non-thermal radiation ; keV-TeV cosmic sources ; INTEGRAL legacy data base ; relativistic astrophysics ; gamma rays ; cosmic rays ; interstellar medium ; Milky Way ; galaxies ; radiation mechanisms: non-thermal ; high energy astrophysics ; background radiation ; photon–photon interaction ; pair production ; axion-like particles ; gamma-rays ; IACTs ; intergalactic magnetic fields ; high-energy gamma rays ; electromagnetic cascades ; pevatrons ; Galactic cosmic rays ; PeVatron ; Crab Nebula ; angular resolution ; energy spectral distribution ; γ-ray astronomy ; very-high-energy gamma-ray astrophysics ; astroparticle physics ; imaging atmospheric Cherenkov telescopes ; Quantum Gravity ; Lorentz invariance violation ; time of flight ; modified photon interactions ; very-high-energy gamma-ray astronomy ; open science ; data format ; multi-messenger ; real-time ; high-energy ; alerts ; very-high-energy γ-ray astronomy ; atmospheric Cherenkov telescopes ; source catalogues ; gamma-ray astronomy ; Cherenkov telescopes ; ISM: supernova remnants ; ISM: individual objects—Crab Nebula ; pulsars: general ; radiation mechanisms: nonthermal ; gamma rays: general ; acceleration of particles ; astrophysical plasmas ; MHD ; high-energy gamma-ray astrophysics ; Gamma-ray bursts ; non-thermal emission ; radiative processes ; very-high energy Gamma-rays ; statistical analysis ; likelihood ; bayes ; imaging atmospheric Cherenkov telescope ; IACT ; IACT technology ; very high energy gamma-ray telescope ; ground-based gamma-ray astrophysics ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science
    Language: English
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  • 8
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-04
    Description: During the past few decades, plasma science has witnessed a great growth in laboratory studies, in simulations, and in space. Plasma is the most common phase of ordinary matter in the universe. It is a state in which ionized matter (even as low as 1%) becomes highly electrically conductive. As such, long-range electric and magnetic fields dominate its behavior. Cosmic plasmas are mostly associated with stars, supernovae, pulsars and neutron stars, quasars and active galaxies at the vicinities of black holes (i.e., their jets and accretion disks). Cosmic plasma phenomena can be studied with different methods, such as laboratory experiments, astrophysical observations, and theoretical/computational approaches (i.e., MHD, particle-in-cell simulations, etc.). They exhibit a multitude of complex magnetohydrodynamic behaviors, acceleration, radiation, turbulence, and various instability phenomena. This Special Issue addresses the growing need of the plasma science principles in astrophysics and presents our current understanding of the physics of astrophysical plasmas, their electromagnetic behaviors and properties (e.g., shocks, waves, turbulence, instabilities, collimation, acceleration and radiation), both microscopically and macroscopically. This Special Issue provides a series of state-of-the-art reviews from international experts in the field of cosmic plasmas and electromagnetic phenomena using theoretical approaches, astrophysical observations, laboratory experiments, and state-of-the-art simulation studies.
    Keywords: QB1-991 ; Q1-390 ; QC1-999 ; cosmic ray knee and ankle ; blazars ; numerical methods ; global jets ; MHD–accretion ; muti-messenger astronomy ; massive star supernovae ; galaxies: active ; TBD ; 26Al ; black holes ; accreting black holes ; particle-in-cell simulations ; kink-like instability ; laser-induced nuclear reactions ; magnetic fields ; magneto-hydrodynamics ; gamma-ray bursts ; active galactic nuclei ; accretion discs–jets ; numerical relativity ; plasma physics ; GRMHD ; high-power laser systems ; radio interferometry ; recollimation shocks ; effective lifetime ; multi-wavelength astronomy ; relativistic jets ; high energy astrophysics ; jets ; active galaxies ; relativistic astrophysics ; helical magnetic fields ; laser plasma ; X-ray binaries ; polarization ; the Weibel instability ; AGN ; neutrino astrophysics ; radiation mechanism: non-thermal ; nuclear astrophysics ; cosmic rays ; mushroom instability ; accretion disks ; MHD winds ; thema EDItEUR::P Mathematics and Science::PG Astronomy, space and time
    Language: English
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  • 9
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-09-11
    Description: This reprint contains a summary of what has been presented at the 19th “Calorimetry for High Energy Physics Experiment” (CALOR) conference, which was held at the University of Sussex (Brighton, UK) in May 2022. The state of the art of particle detection, as well as of simulation tools for particle interactions with material, is presented and discussed by world leaders in the Research & Development of particle detectors, as well as early career researchers, sparking very exciting conversations within the detector development community during the five days of the conference.
    Keywords: ATLAS ; Tile Calorimeter ; calorimeter calibration ; calorimeter performance ; liquid scintillator ; PMTs ; calibration ; energy nonlinearity ; energy resolution ; dual calorimetry ; fast-timing ; electromagnetic calorimetry ; radiation-hard detectors ; LAr ; upgrade ; calorimeter ; readout ; electronics ; electromagnetic calorimeter ; compact muon solenoid ; high luminosity large hadron collider ; liquid argon detectors ; liquid argon calibration ; signal processing ; particle identification ; resolution ; pre-shower ; scintillating glass ; hadronic calorimeter ; high granularity calorimetry ; silicon photomultiplier ; cosmic rays ; calorimeters ; space instrumentation ; large detector systems for particle and astroparticle physics ; energy reconstruction ; cluster splitting algorithm ; resistive plate chambers ; gaseous imaging and tracking detectors ; hadron calorimetry ; dual-readout calorimetry ; future colliders ; Phase-1 ; commissioning ; calorimetry ; particle detectors ; photomultipliers ; Higgs factory ; crystal ; SiPM ; high granularity ; Geant4 ; geant-val ; simulation ; hadronic interaction ; test-beam ; Cherenkov calorimeter ; high-granularity ; neural network ; GNN ; CNN ; electromagnetic showers ; Cherenkov light ; optical fibres ; liquid argon ; plasma light source ; scintillation light ; dark photon ; signal reconstruction ; machine learning ; graph neural network ; high energy physics ; calorimeter reconstruction ; secondary electron emission ; radiation hardness ; forward calorimetry ; dual-readout ; ADRIANO2 ; JUNO ; JUNO-TAO ; neutrino detectors ; reactor neutrinos ; MAPS ; silicon detectors ; linear collider ; astroparticles ; γ-ray astronomy ; scintillation ; light yield ; tile calorimeter ; large hadron collider ; FCC ; liquified noble gas ; irradiation ; crystals ; scintillators ; protons ; neutrons ; proton CT ; image reconstruction ; proton tracking ; deep learning ; SiPMs ; calorimetry for high energy physics ; dual readout detector R&D ; PbF2 ; mechanics ; LHC ; trigger ; FPGA ; SLR ; LYSO ; intensity frontier ; ceramics ; time of flight ; ultrafast calorimetry ; charge transfer luminescence ; fast timing ; front-end ; MPPC ; flavour violation ; hadron calorimeter ; silicon photomultipliers ; CMS ; phase-2 ; HGCAL ; particle flow ; TileCal ; Phase-II upgrade ; quality assurance testing ; burn-in ; transformer-coupled buck converters ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PH Physics
    Language: English
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  • 10
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-09
    Description: This Special Issue gathers topics of utmost interest in the field of antennas and propagation, such as: new directions and challenges in antenna design and propagation; innovative antenna technologies for space applications; metamaterial, metasurface and other periodic structures; antennas for 5G; electromagnetic field measurements and remote sensing applications.
    Keywords: 5G mobile communication ; Sub-6-GHz ; compact antenna ; channel selection ; channel filters ; metamaterials ; antenna radiation measurements ; common mode current ; distance averaging ; multipath site ; small antenna ; loop probe ; log-periodic dipole array ; wideband antenna ; VHF ; cross polarized ; array element ; radio detection ; cosmic rays ; ultra-wide band antennas ; energy-based antenna descriptors ; pulsed sources ; direction finding ; dual-band dipole ; CRLH antenna ; dual-band balun ; CRLH balun ; wireless communication ; textile antenna ; wearable antenna ; SAR ; flexible antenna ; low-profile antenna ; sensor network ; active test ; UWB ; 802.15.4z ; timestamp detection ; ranging ; multipath ; frequency fading ; dye-sensitized solar cells ; integration ; antenna array ; solar antenna ; multibandoperation ; slotted antenna ; microwave ; millimeter-wave band ; WLAN ; 5G ; frequency multiplexed ; IoT ; millimeter-waves ; multi-band ; n-band antenna ; antenna as a sensor ; meander line antenna ; periodic structure ; millimeter-wave antenna ; frequency scanning antenna ; leaky-wave antenna ; planar sensor ; non-invasive ; Split Ring Resonator ; dielectrics measurements ; RF absorbing materials ; higher symmetries ; glide symmetry ; periodic structures ; mode matching ; dispersion analysis ; radar cross section (RCS) measurement ; near-field to far-field transformation (NFFFT) ; spherical wave expansion (SWE) ; anisotropy ; dielectric constant ; material characterization ; planar resonators ; substrate bending ; textile fabrics ; wearable radiators ; reflectarray antennas ; multibeam antennas ; dual band reflectarrays ; communication satellites ; Ka-band ; near-field antenna effect ; radar calibration ; MIMO radar ; turntable radar ; UWB radar ; radar system ; scattering imaging ; inverse scattering problem ; radar resolution ; photomixer ; terahertz source ; two dimensional photonic crystal ; frequency selective surface superstrate ; terahertz antenna ; dielectric resonator antenna ; biomedical devices ; wireless communication link ; near-field region ; impedance matching characteristics ; horizontal polarization ; UAV ground station ; Omni-directional ; wireless power transmission (WPT) ; energy harvesting ; rectenna ; wireless sensors ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNB Energy industries and utilities
    Language: English
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