1,730,905 research outputs found
Bureau Veritas Offshore Activities
No full textBureau Veritas today consists of 3.500 staff members working both in Paris Head Office and in the 370 survey stations based in 110 countries.With this network of offices,Bureau Veritas provides readily accesible service and cooperation around the globe
ADAKAH ITU: VERITAS ET IUSTITIA?
No full text<p><strong><em>Abstract</em></strong></p><p><em>The idea of truth has gone through a path of a long history and will still be the subject of a long and complex discourse. It will even remain being the cause of violent conflicts, the more if it deals with the perception of absolute truth. The unfortunate problem befalling mankind is the fact, which is based on different perceptions of truth, let alone “absolute truth”, that a lot of people strive to uphold perfect justice as if the world has a place for such an illusion. The history of mankind has reached a stage, whereby we must learn to understand that we have to distance ourselves from thoughts of promoting absolute truth, the more if aspirations toward upholding perfect justice also piggy backs thereon. Or else the world will keep constantly embroiled in senseless conflicts, violence and wars, where people would fight each other for their respective absolute principles, while actually being unaware about its absurd logic. Therefore the newly launched journal <strong>Veritas Et Iustitia </strong>would have to confront a tremendous challenge because the editors should construct a platform for continuous dialogue leading to constructive efforts towards better understanding about truth which should be increasingly more true and justice which should be increasingly more just to be pursued by mankind.</em></p><p align="right"><strong><em> </em></strong></p><p align="right"><strong><em>Keywords:</em></strong><strong><em><br /> </em></strong><em>truth</em><em>, justice, history, absolutism, ideology, paradoxically</em><em></em></p></jats:p
VTSCat - the VERITAS data catalogue
No full textVTSCat is the catalog of high-level data products from all publications of the [VERITAS collaboration](https://veritas.sao.arizona.edu/).
The VTSCat data collection contains:
- high-level data like spectral flux points, light curves, spectral fits in human- and machine-readable yaml and ecsv file format
- tabled data like upper limits tables from dark matter searches or results on the extragalactic background in ecsv file format
- sky maps (wherever available) in FITS file format
This is a pre-release for testing and early publications.
A forthcoming research note will provide more details on the catalog. Please check the README file and all documentation linked to the README.
VTSCat supplements the HEASARC catalogue of VERITAS results (to be published). VTSCat is inspired and derived from [gamma-cat](https://github.com/gammapy/gamma-cat).
If you are a previous VERITAS author and would like to be associated with this repository, please send an email to G. Maier.
Access:
- GitHub: https://github.com/VERITAS-Observatory/VERITAS-VTSCat
References:
- VERITAS: https://veritas.sao.arizona.edu/
- VER Dictionary of Nomenclature: https://cds.u-strasbg.fr/cgi-bin/Dic-Simbad?/17350620
- ICRC 2021 proceedings: https://arxiv.org/abs/2108.06424
New in version v0.8.0:
- 2021/2022 publications
- consistency fixesIf you use this software, please cite it using these metadata
Designing for designers: Towards the development of accessible ICT products and services using the VERITAS framework
No full textAmong key design practices which contribute to the development of inclusive ICT products and services is user testing with people with disabilities. Traditionally, this involves partial or minimal user testing through the usage of standard heuristics, employing external assisting devices, and the direct feedback of impaired users. However, efficiency could be improved if designers could readily analyse the needs of their target audience. The VERITAS framework simulates and systematically analyses how users with various impairments interact with the use of ICT products and services. Findings show that the VERITAS framework is useful to designers, offering an intuitive approach to inclusive design.The work presented in this article forms part of VERITAS, which is funded by the European Commission's 7th Framework Programme (FP7) (grant agreement # 247765 FP7-ICT-2009.7.2)
VTSCat: The VERITAS Catalog of Gamma-Ray Observations
No full textVTSCat is the catalog of high-level data products from all publications of the [VERITAS collaboration(https://veritas.sao.arizona.edu/).
The VTSCat data collection contains:
- high-level data like spectral flux points, light curves, spectral fits in human
- and machine-readable yaml and ecsv file format - tabled data like upper limits tables from dark matter searches or results on the extragalactic background in ecsv file format
- sky maps (wherever available) in FITS file format
This is a pre-release for testing and early publications.
A forthcoming research note will provide more details on the catalog.
Please check the README file and all documentation linked to the README. VTSCat supplements the HEASARC catalogue of VERITAS results (to be published). VTSCat is inspired and derived from [gamma-cat](https://github.com/gammapy/gamma-cat). If you are a previous
VERITAS author and would like to be associated with this repository, please send an email to G. Maier.
Access:
- GitHub: https://github.com/VERITAS-Observatory/VERITAS-VTSCat
References:
- VERITAS: https://veritas.sao.arizona.edu/
- VER Dictionary of Nomenclature: https://cds.u-strasbg.fr/cgi-bin/Dic-Simbad?/17350620
- ICRC 2021 proceedings: https://arxiv.org/abs/2108.06424If you use this software, please cite it using these metadata
VTSCat: The VERITAS Catalog of Gamma-Ray Observations
No full textVTSCat is the catalog of high-level data products from all publications of the VERITAS collaboration.The VTSCat data collection contains: high-level data like spectral flux points, light curves, spectral fits in human and machine-readable yaml and ecsv file format tabled data like upper limits tables from dark matter searches or results on the extragalactic background in ecsv file format sky maps (wherever available) in FITS file format This is a pre-release for testing and early publications. A forthcoming research note will provide more details on the catalog. Please check the README file and all documentation linked to the README. VTSCat supplements the HEASARC catalogue of VERITAS results (to be published). VTSCat is inspired and derived from gamma-cat. If you are a previous VERITAS author and would like to be associated with this repository, please send an email to G. Maier. Access: GitHub: https://github.com/VERITAS-Observatory/VERITAS-VTSCat References: https://veritas.sao.arizona.edu/ VER Dictionary of Nomenclature: https://cds.u-strasbg.fr/cgi-bin/Dic-Simbad?/17350620 ICRC 2021 proceedings: https://arxiv.org/abs/2108.0642
VTSCat: The VERITAS Catalog of Gamma-Ray Observations
No full textVTSCat is the catalog of high-level data products from all publications of the VERITAS collaboration.The VTSCat data collection contains: high-level data like spectral flux points, light curves, spectral fits in human and machine-readable yaml and ecsv file format tabled data like upper limits tables from dark matter searches or results on the extragalactic background in ecsv file format sky maps (wherever available) in FITS file format This is a pre-release for testing and early publications. A forthcoming research note will provide more details on the catalog. Please check the README file and all documentation linked to the README. VTSCat supplements the HEASARC catalogue of VERITAS results (to be published). VTSCat is inspired and derived from gamma-cat. If you are a previous VERITAS author and would like to be associated with this repository, please send an email to G. Maier. Access: GitHub: https://github.com/VERITAS-Observatory/VERITAS-VTSCat References: https://veritas.sao.arizona.edu/ VER Dictionary of Nomenclature: https://cds.u-strasbg.fr/cgi-bin/Dic-Simbad?/17350620 ICRC 2021 proceedings: https://arxiv.org/abs/2108.0642
Deep Learning Transient Detection with VERITAS
No full textGround-based -ray observatories, such as the VERITAS array of imaging atmospheric Cherenkov telescopes, provide insight into very-high-energy (VHE, ) astrophysical transient events. Examples include the evaporation of primordial black holes, gamma-ray bursts and flaring blazars. Identifying such events with a serendipitous location and time of occurrence is difficult. Thus, employing a robust search method becomes crucial. An implementation of a transient detection method based on deep-learning techniques for VERITAS will be presented. This data-driven approach significantly reduces the dependency on the characterization of the instrument response and the modelling of the expected transient signal. The response of the instrument is affected by various factors, such as the elevation of the source and the night sky background. The study of these effects allows enhancing the deep learning method with additional parameters to infer their influences on the data. This improves the performance and stability for a wide range of observational conditions. We illustrate our method for an historic flare of the blazar BL Lac that was detected by VERITAS in October 2016. We find a promising performance for the detection of such a flare in timescales of minutes that compares well with the VERITAS standard analysis
Eventdisplay Analysis Scripts for VERITAS
No full textEventdisplay analysis scripts for VERITAS, see EventDisplay_v4 for the reconstruction and analysis codes.
Eventdisplay v490 is a major update with significant changes.
This v490-alpha.3 release adds to the v490-alpha.1 (note: ignore v490-alpha.2):
4. Scripts to extract DB text files and use them in the evndisp analysis
Scripts to extract DB information are in the db_scripts directory. Users generally need only the db_run.sh script. Allows large-scale parallel process without DB overload.
What's Changed
Add functionality to write DB data from disk by @GernotMaier in https://github.com/VERITAS-Observatory/Eventdisplay_AnalysisScripts_VTS/pull/36
V490 dev v0.2 by @GernotMaier in https://github.com/VERITAS-Observatory/Eventdisplay_AnalysisScripts_VTS/pull/37
Full Changelog: https://github.com/VERITAS-Observatory/Eventdisplay_AnalysisScripts_VTS/compare/v490-alpha.1...v490-alpha.3If you use this software, please cite it using these metadata
VERITAS Observations of the BL Lac Object TXS 0506+056
No full textOn 2017 September 22, the IceCube Neutrino Observatory reported the detection of the high-energy neutrino event IC 170922A, of potential astrophysical origin. It was soon determined that the neutrino direction was consistent with the location of the gamma-ray blazar TXS 0506+056. (3FGL J0509.4+ 0541), which was in an elevated gamma-ray emission state as measured by the Fermi satellite. Very Energetic Radiation Imaging Telescope Array System (VERITAS) observations of the neutrino/blazar region started on 2017 September 23 in response to the neutrino alert and continued through 2018 February 6. While no significant very-high-energy (VHE; E > 100 GeV) emission was observed from the blazar by VERITAS in the two-week period immediately following the IceCube alert, TXS 0506+ 056 was detected by VERITAS with a significance of 5.8 standard deviations (sigma) in the full 35 hr data set. The average photon flux of the source during this period was (8.9 +/- 1.6). x. 10(-12) cm(-2) s(-1), or 1.6% of the Crab Nebula flux, above an energy threshold of 110 GeV, with a soft spectral index of 4.8. +/-. 1.3
- …
