physical reference data of the nist physics laboratory presentation for the daser symposium digital...
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Physical Reference Dataof the NIST Physics Laboratory
Presentation for the DASER Symposium
Digital Archives for Science & Engineering Research
Saturday, November 22, 2003
Bob DragosetPhysics Laboratory
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Physical Reference Data Office of Electronic Commerce
in Scientific and Engineering Data,NIST Physics Laboratory Karen Olsen, programming Gloria Wiersma, HTML editing
Nearly 30 online databases covering: Fundamental Physical Constants Atomic and Molecular Spectroscopy Electron-Impact Atomic Cross Sections X-ray Attenuation and Absorption
First database online June 1994
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Data Storage & Integrity Public & internal web servers
Dual, mirrored disk drives Daily backup of internal web server Automatic monitoring of unauthorized file
modification on public web server All files for each new or updated database
are archived on CDs and stored outside NIST. Firewalls are configured for minimal access
to public web server.
public server
internal server
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Data Input ASCII files
Fixed-column Tab-delimited
LaTeX to gif for equation images
Scanned legacy documents
Data entry through web interfaces
Scripts & programs for processing data
Automatic daily updating
MySQL and PHP (open source)
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Data Output Dynamic web pages
HTML tables ASCII files
• fixed-column• tab-delimited
User-selected output options
PDF files generated "on-the-fly"
Custom data graphs
Dynamic calculations of user-defined compounds and mixtures
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Physical Reference Data
http://physics.nist.gov/data
Fundamental Physical Constants 260,000 page requests / month
Searchable Bibliography 3600 references
Fundamental Physical Constants 260,000 page requests / month
Searchable Bibliography 3600 references
Atomic Spectra Database 2.0 72,000 spectroscopic lines 66,000 energy levels 90,000 page requests / month
Atomic Spectra Database 2.0 72,000 spectroscopic lines 66,000 energy levels 90,000 page requests / month
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Physical Reference Data (cont.)
http://physics.nist.gov/data
Microwave Molecular Spectral Databases diatomics (121), triatomics (55), & hydrocarbons (91) 30,000 spectral lines 23,000 page requests / month
Microwave Molecular Spectral Databases diatomics (121), triatomics (55), & hydrocarbons (91) 30,000 spectral lines 23,000 page requests / month
Electron-Impact Cross Sections 70 molecules & 2 atoms (updated soon) theory comparison with experiments 25,000 page requests / month
Electron-Impact Cross Sections 70 molecules & 2 atoms (updated soon) theory comparison with experiments 25,000 page requests / month
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http://physics.nist.gov/constants
Extensive evaluation method for determining values of the constants
Extensive evaluation method for determining values of the constants
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http://physics.nist.gov/constantsbib
DATA INPUT Choose reference source Choose Journal (e.g., pr) Enter info (TeX if needed)
title first & last pages year authors keywords
Editing screen available showing HTML & TeX
Scientist proofs Secretary: final approval Database automatically
updated daily
DATA INPUT Choose reference source Choose Journal (e.g., pr) Enter info (TeX if needed)
title first & last pages year authors keywords
Editing screen available showing HTML & TeX
Scientist proofs Secretary: final approval Database automatically
updated daily
DATA OUTPUT HTML output PDF output
Generate PostScript by running LaTeX with BibTeX references (39,000 line file)
Distill PostScript file
DATA OUTPUT HTML output PDF output
Generate PostScript by running LaTeX with BibTeX references (39,000 line file)
Distill PostScript file
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http://physics.nist.gov/asd
Data Input Data entered into Oracle database from
uploaded data files. ASCII output from Oracle database put into
Ctree database and data massaged. ASCII output from Ctree database used by Korn
shell & PERL scripts for web output. Ctree was used because NIST originally offered
a PC-based product containing the data.
Data Input Data entered into Oracle database from
uploaded data files. ASCII output from Oracle database put into
Ctree database and data massaged. ASCII output from Ctree database used by Korn
shell & PERL scripts for web output. Ctree was used because NIST originally offered
a PC-based product containing the data.
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DATA OUTPUT Many user-selected
options, including: ASCII fixed-column HTML & paged HTML
User options are listed in the URL, which can be bookmarked.
Options stored without using "banned" cookies.
DATA OUTPUT Many user-selected
options, including: ASCII fixed-column HTML & paged HTML
User options are listed in the URL, which can be bookmarked.
Options stored without using "banned" cookies.
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http://physics.nist.gov/ionxsec
The "Atoms" portion of the new version of the database was designed using MySQL database & PHP programming language, both Open Source.
The "Atoms" portion of the new version of the database was designed using MySQL database & PHP programming language, both Open Source.
Manual check required.
Manual check required.
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http://physics.nist.gov/molspec
DATA INPUT: Legacy data Scanning, OCR, & manual
labor used to generate hundreds of molecular constants tables in HTML.
Errors found and corrected by running scripts on electronic data file.
DATA INPUT: Legacy data Scanning, OCR, & manual
labor used to generate hundreds of molecular constants tables in HTML.
Errors found and corrected by running scripts on electronic data file.
14http://physics.nist.gov/restfreq
DATA OUTPUT Search & retrieval using
several data fields, including: molecule telescope reference empirical formula
DATA OUTPUT Search & retrieval using
several data fields, including: molecule telescope reference empirical formula
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For More Information
Bob Dragoset
National Institute ofStandards and Technology
dragoset@nist.gov
http://physics.nist.gov
Bob Dragoset
National Institute ofStandards and Technology
dragoset@nist.gov
http://physics.nist.gov
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