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Sensorfusion zur Kompensation von Messfehlern bei kamerabasierter Farbverteilungsmessung

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Book Series: Spektrum der Lichttechnik / Karlsruher Institut für Technologie (KIT), Lichttechnisches Institut ISSN: 21951152 ISBN: 9783731508304 Year: Volume: 18 Pages: VII, 259 p. DOI: 10.5445/KSP/1000085279 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-28 18:37:01
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In this work we introduce a colour measurement method based on sensor fusion for the complete characterization of LED lighting systems. The measurement information from indirect, high-resolution filter camera measurements is combined with spectral and photometric point measurements. The results of the developed measurement method are angle-resolved chromaticity coordinates as well as angle-resolved spectral information.

Spectral near field data of LED systems for optical simulations

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Book Series: Spektrum der Lichttechnik / Karlsruher Institut für Technologie (KIT), Lichttechnisches Institut ISSN: 21951152 ISBN: 9783731507505 Year: Volume: 17 Pages: VIII, 212 p. DOI: 10.5445/KSP/1000078518 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-28 18:37:01
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This book presents, validates and applies a fast, accurate and general measurement and modeling technique to obtain spectral near field data of LED systems for optical simulations in order to address the steadily increasing requirements of modern high quality LED systems. It requires only a minimum of goniophotometric near field measurements and no time-consuming angularly resolved spectral measurements. The obtained results can be used directly in state-of-the-art ray tracers.

Spectral Line Shapes in Astrophysics and Related Topics

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ISBN: 9783039281688 9783039281695 Year: Pages: 268 DOI: 10.3390/books978-3-03928-169-5 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General) --- Astronomy (General)
Added to DOAB on : 2020-04-07 23:07:08
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Spectral lines, widths, and shapes are powerful tools for emitting/absorbing gas diagnostics in different astrophysical objects (from the solar system to the most distant objects in the universe—quasars). On the other hand, experimental and theoretical investigations of laboratory plasma have been applied in spectroscopic astrophysical research, especially in research on atomic data needed for line shape calculations. Data on spectral lines and their profiles are also important for diagnostics, analysis, and the modelling of fusion plasma, laser-produced plasma, laser design and development, and various plasmas in industry and technology, like light sources based on plasmas or the welding and piercing of metals by laser-produced plasma. The papers from this book can be divided into four groups: 1. stark broadening data for astrophysical and laboratory plasma investigations; 2. applications of spectral lines for astrophysical and laboratory plasma research; 3. spectral line phenomena in extragalactic objects, and 4. laboratory astrophysics results for spectra investigation. The reviews and research papers, representing new research on the topics presented in this book, are of interest for specialists and PhD students. We hope that the present book will be useful and interesting for scientists interested in the investigation of spectral line shapes and will contribute to the education of young researchers and PhD students.

Keywords

stark broadening --- atomic data --- subdwarfs B stars --- Ar II --- stark broadening --- atomic data --- atomic processes --- line profiles --- Ar VII --- stark broadening --- line profiles --- atomic data --- Na IV --- atomic/molecular data --- radiative and collisional processes --- stars --- stark broadening --- impact approximation --- numerical simulation --- ionization processes --- emission line formation --- atomic spectroscopy --- supermassive black holes --- emission line profiles --- quasars --- line shape --- wave collapse --- electric field solitons --- plasma turbulence --- line shapes --- stark broadening --- neutral broadening --- corona discharge --- line shapes --- Stark broadening --- Zeeman effect --- tokamaks --- white dwarfs --- active galaxies --- BL Lacertae objects --- AO 0235+164 --- photometry --- polarimetry --- plasma spectroscopy --- microwave discharges --- gas temperature --- stark broadening parameters --- atomic emission spectroscopy --- laboratory plasma --- spectra --- line profiles --- astrophysical plasmas --- inner plasma electrostatic screening --- different charged ions --- stars --- galaxies: active --- galaxies: nuclei --- line: profiles --- quasars: emission lines --- catalogs --- surveys --- line shapes --- Stark broadening --- Zeeman effect --- white dwarfs --- QSO samples --- QSO selection --- medium-band photometry --- electron scattering --- cross sections --- Rosetta mission --- atomic and molecular databases --- Stark broadening --- line profiles --- atomic data --- spectroscopy --- alkali atoms --- astrophysics --- atomic processes --- molecular processes --- radiative transfer --- absorption quasi-molecular bands --- sun:atmosphere --- sun:photosphere --- stars:atmospheres --- white dwarfs --- atomic processes --- radiative transfer --- Sun: atmosphere --- Sun: photosphere --- stars: atmospheres --- white dwarfs --- Stark effect --- electron broadening --- Lienard-Wiechert --- retarded interaction --- relativistic collision operator --- Stark broadening --- line profiles --- atomic data --- plasmas --- Maxwell --- Juttner-Maxwell --- relativistic --- Doppler effect --- asymmetry --- Stark broadening --- Ar VII line profiles --- stars --- white dwarfs --- atomic data --- scattering

Volcanic Plumes.Impacts on the Atmosphere and Insights into Volcanic Processes

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ISBN: 9783038976288 Year: Pages: 252 DOI: 10.3390/books978-3-03897-629-5 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General)
Added to DOAB on : 2019-04-05 10:34:31
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Abstract

Volcanoes release plumes of gas and ash to the atmosphere during episodes of passive and explosive behavior. These ejecta have important implications for the chemistry and composition of the troposphere and stratosphere, with the capacity to alter Earth's radiation budget and climate system over a range of temporal and spatial scales. Volcanogenic sulphur dioxide reacts to form sulphate aerosols, which increase global albedo, e.g., by reducing surface temperatures, in addition to perturbing the formation processes and optical properties of clouds. Released halogen species can also deplete stratospheric and tropospheric ozone. Volcanic degassing, furthermore, played a key role in the formation of Earth’s atmosphere, and volcanic plumes can affect air quality, pose hazards to aviation and human health, as well as damage ecosystems. The chemical compositions and emission rates of volcanic plumes are also monitored via a range of direct-sampling and remote-sensing instrumentation, in order to gain insights into subterranean processes, in the respect of the magmatic bodies these volatiles exsolve from. Given the significant role these gases play in driving volcanic activity, e.g., via pressurisation, the study of volcanic plumes is proving to be an increasingly fruitful means of improving our understanding of volcanic systems, potentially in concert with observations from geophysics and contributions from fluid dynamical modelling of conduit dynamics.

Asymmetric Planetary Nebulae VII

Authors: ---
ISBN: 9783038976400 Year: Pages: 204 DOI: 10.3390/books978-3-03897-641-7 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General) --- Astronomy (General)
Added to DOAB on : 2019-03-21 14:08:22
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This book contains the best and most up-to-date contributions in the field of late stage stellar evolution, as presented at the APNVII conference in Hong Kong in December 2017. A total of 60 scientists from 20 countries gathered to present, listen, interact and discuss the most current issues and problems in planetary nebulae and related objects research. The emphasis of this influential series of meetings, which was the seventh occasion over the last 20 years, has always been on the hypothesized and observed physical shaping mechanisms of the ejected nebulae that have such wonderful and intriguing forms. This special Galaxies conference issue of fully refereed contributions brings together a representative compilation of the meeting presentations in paper form. It captures the current “snap shot” status of this research field in some real sense. Such proceedings are well received and can be used as a reference material by both participants and all others working in the field for years to come.

Keywords

planetary systems --- planetary nebulae --- stars: binaries --- stars: AGB and post-AGB --- stars: variables: general --- stars: abundances --- stars: AGB and post-AGB --- stars: atmospheres --- stars: individual: WD 0044–121 --- stars: individual: WD 2134+25 --- stars: individual: WD 1751+106 --- planetary nebulae --- asymptotic giant branch stars --- mass loss --- infra-red --- planetary nebulae --- integral field spectroscopy --- stellar evolution --- binarity --- planetary nebulae --- stellar mass loss --- stellar evolution --- planetary nebulae --- circumstellar dust --- planetary nebulae --- mass-loss --- stellar evolution --- X-rays --- stellar evolution --- late stage stellar evolution --- binarity: transients: planetary nebulae --- planetary nebulae --- stars: AGB and post-AGB --- late stage stellar evolution --- planetary nebulae --- stars: binaries --- central stars of planetary nebulae --- proto-planetary nebulae --- binaries: spectroscopic --- stars: atmospheres --- stars: abundances --- supernovae --- late stage stellar evolution --- planetary nebulae --- binarity --- stellar evolution --- AGB and post-AGB stars --- circumstellar matter --- winds and outflows --- mass-loss --- jets --- binaries: close --- stars: AGB and post-AGB --- stars: winds, outflows --- ISM: jets and outflows --- binary stars --- post-AGB --- discs --- planetary nebula --- X-ray --- stellar evolution --- AGB stars --- post-AGB stars --- planetary nebulae --- planetary nebulae --- fullerenes --- planetary nebulae --- AGB and post-AGB stars --- binarity --- accretion disks --- jets --- mass-loss --- circumstellar matter --- (sub)millimeter interferometry --- ultraviolet radiation, X-rays --- infrared interferometry --- AGB stars --- stellar evolution --- observations --- aperture masking --- planetary nebulae --- binarity --- abundances --- stellar evolution --- post-AGB stars --- pre-PN hydrodynamic models --- planetary nebulae: Common Envelope --- planetary nebulae: individual (OH231+8+04.2) --- astrochemistry --- planetary nebulae --- UIE bands --- normal modes --- displacement vectors --- late-stage stellar evolution --- planetary nebulae --- multi-wavelength photometry --- radial velocity --- stellar evolution --- pulsation --- shock wave --- late stage stellar evolution --- planetary nebulae --- theory and observation --- planetary nebulae --- AGB and post-AGB --- interstellar medium --- radio continuum --- winds --- outflows --- dust --- extinction --- ISM: abundances --- planetary nebulae: individual (NGC 6781)

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