507,312 research outputs found
musrfit: A free platform-independent framework for muSR data analysis
A free data-analysis framework for muSR has been developed. musrfit is fully
written in C++, is running under GNU/Linux, Mac OS X, as well as Microsoft
Windows, and is distributed under the terms of the GNU GPL. It is based on the
CERN ROOT framework and is utilizing the Minuit optimization routines for
fitting. It consists of a set of programs allowing the user to analyze and
visualize the data. The fitting process is controlled by an ascii-input file
with an extended syntax. A dedicated text editor is helping the user to create
and handle these files in an efficient way, execute the fitting, show the data,
get online help, and so on. A versatile tool for the generation of new input
files and the extraction of fit parameters is provided as well. musrfit
facilitates a plugin mechanism allowing to invoke user-defined functions.
Hence, the functionality of the framework can be extended with a minimal amount
of overhead for the user. Currently, musrfit can read the following facility
raw-data files: PSI-BIN, MDU (PSI), ROOT (LEM/PSI), WKM (outdated ascii
format), MUD (TRIUMF), NeXus (ISIS).Comment: 4 pages, 4 figure
Simplifying Satellite and Ground Data Validation with Level-2 Subsetting
We demonstrate that scientists can simplify their satellite data validation workflow with the use of NASA Godddard Earth Sciences Data and Information Services Center (GES DISC) subsetting services. We perform a sample validation of Aura ozone products collocated with ground-based ozone measurements using subsetting services to trim satellite data to only the relevant user-defined variables and spatio-temporal region. Because the subsetting service automatically returns only relevant data granules that adhere to a set of user-defined coincidence criteria, user workload is greatly reduced. Moreover, the resultant data files are substantially smaller than full data granules due to the subsetting service further culling the data to the relevant geospatio-temporal coincidence criteria, user-defined variables, and user-defined dimensions of variables. This decreases data download throughput and file storage requirements. The validation presented here quantifies the time and file size savings that can be achieved by utilizing subsetting services within the satellite data validation workflow
Langley VEDIT for NOS/VE usage manual
The use of the VEDIT editor on the CDC Network Operating System/Virtual Environment (NOS/VE) is discussed. The VEDIT, a utility, allows a user to edit files line by line (line mode). How to access and the use of VEDIT are explained. The parameters and the format of the individual commands are defined. Examples are included
User Defined Function: lidar_3D : NORSEWInD Report UoSNW006
This report describes the User Defined Function Lidar_3D used to interrogate FLUENT data files to provide the relevant data for the MathCAD LiDAR simulation program. The UDF was written in the C programming language and compiled using Microsoft visual studio 2008. This report contains a listing of the program (version 1.03). This report contains a description of the methodology required to compile the UDF so that it may be called by an "execute on demand" call from FLUENT. The report also includes a description of the input and output data file formats
Bandpass Limiter
Bandpass Limiter is a limiter that has a bandpass filter included in its design. When an audio signal is input into the limiter, it band-passes the audio signal before it gets to the limiter stage. The Bandpass Limiter can process mono as well as stereo files and it gives the user an option to use it as a mastering limiter as well as a bandpass limiter, where the low cut and high cut frequencies are defined by the user. All the parameters of the limiter like limiter threshold, attack time and release time can be defined by the user
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