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NASA Data Requirement Descriptions Index

NASA Data Requirement Descriptions Index
Author: United States. National Aeronautics and Space Administration
Publisher:
Total Pages:
Release: 1970
Genre: Aeronautics
ISBN:

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NASA Data Requirement Descriptions

NASA Data Requirement Descriptions
Author: United States. National Aeronautics and Space Administration
Publisher:
Total Pages: 772
Release: 1970
Genre: Communication in science
ISBN:

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NASA Data Requirement Descriptions

NASA Data Requirement Descriptions
Author: United States. National Aeronautics and Space Administration
Publisher:
Total Pages: 802
Release: 1970
Genre: Communication in science
ISBN:

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NASA Specifications and Standards

NASA Specifications and Standards
Author: United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher:
Total Pages: 426
Release: 1967
Genre: Airplanes
ISBN:

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NASA Space Flight Program and Project Management Handbook

NASA Space Flight Program and Project Management Handbook
Author: Nasa
Publisher:
Total Pages: 486
Release: 2018-03-21
Genre: Science
ISBN: 9781680920505

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This book is in full-color - other editions may be in grayscale (non-color). The hardback version is ISBN 9781680920512 and the paperback version is ISBN 9781680920505. The NASA Space Flight Program and Project Management Handbook (NASA/SP-2014-3705) is the companion document to NPR 7120.5E and represents the accumulation of knowledge NASA gleaned on managing program and projects coming out of NASA's human, robotic, and scientific missions of the last decade. At the end of the historic Shuttle program, the United States entered a new era that includes commercial missions to low-earth orbit as well as new multi-national exploration missions deeper into space. This handbook is a codification of the "corporate knowledge" for existing and future NASA space flight programs and projects. These practices have evolved as a function of NASA's core values on safety, integrity, team work, and excellence, and may also prove a resource for other agencies, the private sector, and academia. The knowledge gained from the victories and defeats of that era, including the checks and balances and initiatives to better control cost and risk, provides a foundation to launch us into an exciting and healthy space program of the future.


Text Mining with R

Text Mining with R
Author: Julia Silge
Publisher: "O'Reilly Media, Inc."
Total Pages: 193
Release: 2017-06-12
Genre: Computers
ISBN: 1491981628

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Chapter 7. Case Study : Comparing Twitter Archives; Getting the Data and Distribution of Tweets; Word Frequencies; Comparing Word Usage; Changes in Word Use; Favorites and Retweets; Summary; Chapter 8. Case Study : Mining NASA Metadata; How Data Is Organized at NASA; Wrangling and Tidying the Data; Some Initial Simple Exploration; Word Co-ocurrences and Correlations; Networks of Description and Title Words; Networks of Keywords; Calculating tf-idf for the Description Fields; What Is tf-idf for the Description Field Words?; Connecting Description Fields to Keywords; Topic Modeling.