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CXC Data Model Manual, Part 1: User Introduction to Filtering and Binning in CIAO
October, 2001 • Technical note
McDowell, Jonathan
This manual describes the filtering and binning language used
throughout the CIAO data analysis package, and some of the basic tools
used to do simple analysis tasks. The name ``Data Model'' reflects…
This manual describes the filtering and binning language used
throughout the CIAO data analysis package, and some of the basic tools
used to do simple analysis tasks. The name ``Data Model'' reflects the
intent that there be a high level interface which can be used on data
files of different formats: we have a single abstract description
(`model') that encompasses all the data files we use. Although the
event list, source lists and exposure maps produced as output products
from X-ray observations are quite different in their information
content, they actually have a lot in common in their underlying
structure.
This document lists the functions provided by
the CXC DataModel API. Some routine descriptions include multiple
`contexts' indicating behaviour which may need to be tested separately
and which may be …
This document lists the functions provided by
the CXC DataModel API. Some routine descriptions include multiple
`contexts' indicating behaviour which may need to be tested separately
and which may be implemented in different releases. Each context
is flagged with the DataModel release number it is expected to be supported in,
e.g. (R1.9) for release 1.9.
Boerhavia diffusa is commonly known as Punarnava. It is an importantmedicinal herb belonging to the family Nyctaginaceae. It is widelydistributed throughout tropical and subtropical regions. Ethnomedi…
Boerhavia diffusa is commonly known as Punarnava. It is an importantmedicinal herb belonging to the family Nyctaginaceae. It is widelydistributed throughout tropical and subtropical regions. Ethnomedicinalapplications include the management of urinary disorders, oedema,jaundice, liver ailments, inflammation, digestive problems, asthma,rheumatism and several other health problems. Phytochemicalinvestigations have identified diverse groups of bioactive constituents andstudies showed its pharmacological values. Despite its broad distribution,increasing medicinal demand and destructive harvesting of roots may placepressure on natural populations. Sustainable collection, cultivation,authenticated planting material and conservation of traditional knowledgeare therefore important for its long-term utilization. This chapter highlightsits medicinal importance and draws attention towards its cultivation.
A rapidly-rotating B star observed by Kepler and TESS
September, 2026 • Poster
Scott, Laura J. A., Bowman, Dominic M.
Massive stars are important across many fields of astrophysics due to their interactions with their surroundings. They energise their environments with their radiation and provide chemical enrichment …
Massive stars are important across many fields of astrophysics due to their interactions with their surroundings. They energise their environments with their radiation and provide chemical enrichment through mass loss. At the ends of their lives, their supernova explosions provide metals for later generations of stars and planets, thus driving galactic chemical evolution. However, our understanding of massive stars is ultimately reliant on how well we know the stellar interior and physical processes such as rotation and mixing. For example, if and when a massive star explodes as a supernova and leaves behind a neutron star or a black hole depends on its interior rotation and mixing profiles. Since stellar pulsations directly probe a star's interior physics, asteroseismology is an invaluable tool for constraining rotation and mixing, and for improving our understanding of the impact of massive stars on the universe.
Whilst the number of massive stars in the nominal Kepler field of view was very limited, the advent of repeated visits to the Kepler field by the NASA TESS mission has afforded us with an unique opportunity: combining Kepler and TESS light curves to improve our analyses. In this poster, I will present the asteroseismic analysis of a unique rapidly-rotating massive star in the Kepler field with long-term amplitude and frequency variability in its pulsations, which is best studied from a combined analysis of both Kepler and TESS light curves. Complementary spectroscopy suggests that the star is an emission-line early-B star in quiescence. Therefore, whilst TESS's survey approach is advantageous for studying large samples of massive stars as an ensemble, continued interest in the Kepler mission is providing important results for massive star asteroseismology.
This Guide describes the SAO/CXC data model software, which
allows the user to manipulate data by filtering and binning it.
The CXCDM (CXC Data Model) library is used throughout the CXC software to re…
This Guide describes the SAO/CXC data model software, which
allows the user to manipulate data by filtering and binning it.
The CXCDM (CXC Data Model) library is used throughout the CXC software to read and write
data files, and filters those data files using a special `virtual file' syntax which
qualifies the input filename. This means that users can use any
of the CXC tools to filter their data on the fly, whenever an input filename is prompted for.
The CXCDM also comes with some basic tools for simple data manipulation.
See the Data Manipulation User's Guide for a description of the virtual
file syntax and use of the tools.
The present document is intended for programmers who want to
write their own code using the CXCDM.
O'RTA OSIYONING MIL.AVV. VI–IV ASRLAR TARIXINI TIKLASHDA YOZMA MANBALARNING O'RNI
October, 2026 • Dataset
Rejapov Doniyor, Worldly Knowledge Publishing Centre
Mazkur maqolada O‘rta Osiyoning mil. avv. VI–IV asrlar tarixini o‘rganish va tarixiy jarayonlarni qayta tiklashda yozma manbalarning o‘rni tahlil qilinadi. Tadqiqotda &ld…
Mazkur maqolada O‘rta Osiyoning mil. avv. VI–IV asrlar tarixini o‘rganish va tarixiy jarayonlarni qayta tiklashda yozma manbalarning o‘rni tahlil qilinadi. Tadqiqotda “Avesto”, qadimgi eroniy, yunon, rim hamda mahalliy yozma manbalarda O‘rta Osiyo hududlari, siyosiy tuzilmalari, xalqlari va tarixiy voqealariga oid ma’lumotlar ko‘rib chiqiladi. Yozma manbalarda saqlanib qolgan ma’lumotlarning qisqa, parchali va ayrim hollarda noaniq xususiyatiga qaramay, ularni zamonaviy tadqiqotlar hamda arxeologik dalillar bilan qiyosiy tahlil qilish orqali mazkur davr tarixini nisbatan xolisona yoritish imkoniyatlari ochib beriladi. Shuningdek, XX asr boshlaridan boshlab yozma manbalarni ilmiy o‘rganish jarayoni va keyingi davrlarda ularni arxeologik tadqiqotlar natijalari bilan uyg‘unlashtirishga qaratilgan izlanishlar tahlil qilinadi. Yunon va rim mualliflari asarlaridagi ma’lumotlarning tarixiy-geografik hamda siyosiy jihatlari tadqiqotchilar qarashlari asosida yoritiladi.
O'rta Osiyo, mil. avv. VI–IV asrlar, yozma manbalar, "Avesto", yunon manbalari, rim manbalari, qadimgi Eron manbalari, arxeologik manbalar, tarixiy rekonstruksiya, tarixiy geografiya.
Supplementary Material - Accessible Operational Guide for Inclusive 3D Geospatial Data Production
September, 2026 • Dataset
Tomazela Franzini, Isabela, Araujo de Medeiros Brito, Monique, Ferreira, Alexsandra Vitória, Garcia-Gonzalez, Lucas henrique, Piazentim, Eduardo Guilhermeet al.
This repository contains the accessible operational guide associated with the article An Operational Workflow for Inclusive 3D Geospatial Data Production: Supporting High-Resolution Topographic Analys…
This repository contains the accessible operational guide associated with the article An Operational Workflow for Inclusive 3D Geospatial Data Production: Supporting High-Resolution Topographic Analysis by Visually Impaired Geoscience Professionals. The guide presents the technical stages and parameters used for drone LiDAR acquisition, ground point classification, Digital Terrain Model generation, STL conversion, 3D printing, and tactile interpretation of terrain models. The materials are available in Portuguese and English. Each language version is provided in two equivalent accessible formats: a plain text file (.TXT) designed for navigation with screen readers, including NVDA and JAWS, and a Braille-ready file (.BRL) prepared using Braille Fácil, version 5.0, for use with Braille embossers and compatible refreshable Braille displays.
This document describes the ASCII kernel (AK) design and requirements for the
CXC Data Model. This will allow the DM to operate on simple
text files as well as FITS and IRAF files.
The ASCII kernel …
This document describes the ASCII kernel (AK) design and requirements for the
CXC Data Model. This will allow the DM to operate on simple
text files as well as FITS and IRAF files.
The ASCII kernel is particularly useful in interactive data analysis,
to allow CIAO users to use the familiar DM syntax in manipulating and
filtering text files they may have created for other reasons.
It is not intended as a replacement for the FITS kernel in pipelines.
There is an increasing interest in upgrading the EModel, a parametric tool for speech quality estimation, to the wideband and super-wideband contexts. The
Contemporary models of Unmanned Aerial Vehicles (UAVs) are largely developed using simulators. In a typical scheme, a flight simulator is dovetailed with a
Undertaking engineering research can be compounding for beginning graduate students and thwarting even for seasoned researchers. With a wealth of academic
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