+
Praxis: Where Theory
Meets Practice
In Aviation and Librarianship
SLA Rio Grande
Chapter
4 November 2010
by Sara R. Tomp...
+
Definitions
 Praxis: “Action or practice; spec. the practice or
exercise of a technical subject or art, as distinct
fro...
+ Foundational Theories of Flight: Atmosphere
3
saratifr@gmail.com / Rio Grande SLA November 2010
R.Sharp mod
of FAA illus...
+ Foundational Theories of Flight: Wings/Airfoils
(Newton, 1643-1728; Bernoulli, 1700-1782)
4
saratifr@gmail.com / Rio Gra...
+ Foundational Theories of Flight: 4 Forces of
Flight (Straight & Level = Zero ratios: Lift=Weight,
Thrust=Drag)
5
saratif...
+ Foundational Theories of Flight: The Stall
illustrates an imbalance in the forces; you can
only bend the rules so far!
6...
+ Foundational Theories of Flight: Let’s Do It!
Stall Practice Illustrated
7
saratifr@gmail.com / Rio Grande SLA November ...
+
 Charles Jewett (1816-1868): “Universal Catalog” requires some
standardization and cooperation
 Charles Cutter (1837-1...
+
 1960s to date: AACR and daughters: entry and description
RULES; 2=international standardization; more on nonprint;
pun...
+ Cataloging Example: Even LC varies!
10
What are some of
these fields?!
What would you do
different locally?
saratifr@gma...
+ Illustrating Aviation: Paper Gliders!
*Prizes*! Fastest praxis; furthest flight; closest
guess on LC or Dewey call #
11
...
+
Questions?
saratifr@gmail.com or
sarat@usc.edu or
rsharp@speakeasy.net
Me and my buddy Robin at Edwards AFB
Dry Lakebed ...
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Rio grandenov10talk finalsansnotes

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  • Thanks again, Sara, for giving this interesting and fun talk to our SLA chapter!

    Larry Compton
    President-elect
    SLA-Rio Grande Chapter
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  • Thank you so much again for having me speak with you tonight! Let me know if you have any questions or comments! Also, I will put these slides up on Slide Share, which is connected to my LinkedIn profile.
  • Rio grandenov10talk finalsansnotes

    1. 1. + Praxis: Where Theory Meets Practice In Aviation and Librarianship SLA Rio Grande Chapter 4 November 2010 by Sara R. Tompson with Eric Sharp saratifr@gmail.com sarat@usc.edu 1. AGENDA 2. Introductions – around the room 3. Definition 4. Aviation Theory into Practice overview 5. Librarianship Theory into Practice overview 6. DIY!
    2. 2. + Definitions  Praxis: “Action or practice; spec. the practice or exercise of a technical subject or art, as distinct from the theory of it” (OED)  Aviation: Foundation = physics theories that are demonstrably provable and immutable; largely a science  Librarianship: A profession because of theoretical foundations; mostly a social “science;” will use cataloging/classification illustration -- most structured, least mutable aspect 2 saratifr@gmail.com / Rio Grande SLA November 2010
    3. 3. + Foundational Theories of Flight: Atmosphere 3 saratifr@gmail.com / Rio Grande SLA November 2010 R.Sharp mod of FAA illus. E.g.: Air = 14.7 PSI; based on column of air from sea level to stratosphere. Flight is based upon and obeys laws or rules of our universe. Including the laws of fluid dynamics – these apply to air as well as water.
    4. 4. + Foundational Theories of Flight: Wings/Airfoils (Newton, 1643-1728; Bernoulli, 1700-1782) 4 saratifr@gmail.com / Rio Grande SLA November 2010 R.Sharp and S. Tompson mod of FAA illus. A wing is a “foil.” as are airplane and boat propellers; they reduce turbulence and create down pressure. Molecules of air deflect off the bottom of the wing; per Newton, the wing is pushed up. ~ 70% of “lift” comes from this action. The air molecules going OVER the top of the wing MUST reach the end at the same time as those going under it, so they have to go faster, so lower pressure per Bernoulli. ~ 30% of “lift” is due to this decreased pressure.
    5. 5. + Foundational Theories of Flight: 4 Forces of Flight (Straight & Level = Zero ratios: Lift=Weight, Thrust=Drag) 5 saratifr@gmail.com / Rio Grande SLA November 2010 R.Sharp mod of FAA illus. See this NASA site for kids and teachers for really good explanations! http://www.grc.nasa.gov/ WWW/K- 12/airplane/thrust1.html
    6. 6. + Foundational Theories of Flight: The Stall illustrates an imbalance in the forces; you can only bend the rules so far! 6 saratifr@gmail.com / Rio Grande SLA November 2010 R.Sharp mod of FAA illus. The angles measured in degrees are “angles of attack” – the airfoil in relation to the fluid air. Slow flight, less air molecules going over wing; must increase angle of attack to get more molecules travelling; BUT over ~ 18 degrees of angle, uneven fluid flow, eddies in the air current – like in a stream around rocks; too much eddying, the airfoil is said to “stall.”
    7. 7. + Foundational Theories of Flight: Let’s Do It! Stall Practice Illustrated 7 saratifr@gmail.com / Rio Grande SLA November 2010 From Wikiversity Airplane Flying Handbook
    8. 8. +  Charles Jewett (1816-1868): “Universal Catalog” requires some standardization and cooperation  Charles Cutter (1837-1903): “The convenience to the public is always to be set before the ease of the cataloger”; make items discoverable for users  Seymour Lubetzy (1893-2003): Principle of Authorship (personal AND corporate) as key access point; also findability; translations  Paris Principles, 1961: natural title standardization; entries and headings guides; reemphasis on Jewett and Cutter objectives  1940s: ALA and LC back and forth; bibliographic description-based; format types expanded; differentiation of serials, monographs (from: Chan, Lois May. Cataloging and Classification. 3rd ed. (Lanham, MD: Scarecrow Press, 2007). Foundational Theories of Cataloging 8 saratifr@gmail.com / Rio Grande SLA November 2010
    9. 9. +  1960s to date: AACR and daughters: entry and description RULES; 2=international standardization; more on nonprint; punctuation standards; hierarchy of rules  MARC (1960s to date): Fixed coded fields; format, punctuation, separation standards for other record fields; 856 field for urls; etc.  LCSH (1898 to date): Hierarchical taxonomy of subject headings; arguably users’ favorite entry point; “authority” and “control” key concepts that aid discoverability – Also NAME authority lists  Metadata Schemas (1990s to date): Dublin Core, MODS, etc.  Social tagging/folksonomies: Fun but chaotic? Your thoughts.. (most from: Chan, Lois May. Cataloging and Classification. 3rd ed. (Lanham, MD: Scarecrow Press, 2007). Foundational Theories of Cataloging, contin. 9 saratifr@gmail.com / Rio Grande SLA November 2010
    10. 10. + Cataloging Example: Even LC varies! 10 What are some of these fields?! What would you do different locally? saratifr@gmail.com / Rio Grande SLA November 2010
    11. 11. + Illustrating Aviation: Paper Gliders! *Prizes*! Fastest praxis; furthest flight; closest guess on LC or Dewey call # 11 http://www.funpaperairplanes.com/Plane%20Downloads.html saratifr@gmail.com / Rio Grande SLA November 2010 KWW method which I can demonstrate! OR….
    12. 12. + Questions? saratifr@gmail.com or sarat@usc.edu or rsharp@speakeasy.net Me and my buddy Robin at Edwards AFB Dry Lakebed Fly In 1 Oct 2010!
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