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An International Terrestrial Reference Frame (ITRF) is a realization of the ITRS. Its origin is at the center of mass of the whole earth including the oceans and atmosphere. New ITRF solutions are produced every few years, using the latest mathematical and surveying techniques to attempt to realize the ITRS as precisely as possible.
In geodesy and astrometry, earth orientation parameters (EOP) describe irregularities in the rotation of planet Earth.EOP provide the rotational transform from the International Terrestrial Reference System (ITRS) to the International Celestial Reference System (ICRS), or vice versa, as a function of time.
The IERS has various components located in the United States, Europe and Australia.Among its other functions, the IERS is responsible for announcing leap seconds.. The Sub-bureau for Rapid Service and Predictions of Earth Orientation Parameters of the IERS, located at the United States Naval Observatory, monitors the Earth's rotation.
Office Open XML (OOXML) format was introduced with Microsoft Office 2007 and became the default format of Microsoft Excel ever since. Excel-related file extensions of this format include:.xlsx – Excel workbook.xlsm – Excel macro-enabled workbook; same as xlsx but may contain macros and scripts.xltx – Excel template.xltm – Excel macro ...
Both free and paid versions are available. It can handle Microsoft Excel .xls and .xlsx files, and also produce other file formats such as .et, .txt, .csv, .pdf, and .dbf. It supports multiple tabs, VBA macro and PDF converting. [10] Lotus SmartSuite Lotus 123 – for MS Windows. In its MS-DOS (character cell) version, widely considered to be ...
ITRS may refer to: International Technology Roadmap for Semiconductors , an international body for guiding the semiconductor industry International Terrestrial Reference System , for creating earth measurement reference frames
The model has been successfully used in CAD/EDA simulation tools. [7] The official ITRS definition of the acronym MASTAR is Model for Assessment of CMOS Technologies And Roadmaps. [8] This software [9] [10] [11] is developed by STMicroelectronics and is freely distributed on ITRS organization web site.
Microsoft Excel file format, a spreadsheet file format; Cadillac XLS, a prototype Cadillac concept car; Exelis Inc. (NYSE symbol), a global aerospace, defense, information and services company; Lusitanian language (ISO 639-3 code), an Indo-European Paleohispanic language; Midwest Questar XLS, an American ultralight aircraft design