Rio grandenov10talk finalsansnotes

SLA Rio Grande
Chapter
4 November 2010
by Sara R. Tompson
with Eric Sharp
saratifr@gmail.com
sarat@usc.edu
AGENDA
Introductions – around the room
Definition
Aviation Theory into Practice overview
Librarianship Theory into Practice overview
DIY!
Praxis: Where Theory Meets Practice
In Aviation and Librarianship

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

Foundational Theories of Flight: Atmosphere
3
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.
E.g.: Air = 14.7 PSI; based on column of air from sea level to stratosphere.
R.Sharp mod of FAA illus.

Foundational Theories of Flight: Wings/Airfoils (Newton, 1643-1728; Bernoulli, 1700-1782)
4
A wing is a “foil.” as are airplane and boat propellers; they reduce turbulence and create down pressure.
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.
Molecules of air deflect off the bottom of the wing; per Newton, the wing is pushed up. ~ 70% of “lift” comes from this action.
R.Sharp and S. Tompson mod of FAA illus.

Foundational Theories of Flight: 4 Forces of Flight (Straight & Level = Zero ratios: Lift=Weight, Thrust=Drag)
5
See this NASA site for kids and teachers for really good explanations! http://www.grc.nasa.gov/WWW/K-12/airplane/thrust1.html

Foundational Theories of Flight: The Stall illustrates an imbalance in the forces; you can only bend the rules so far!
6
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.”

Foundational Theories of Flight: Let’s Do It! Stall Practice Illustrated
7
From WikiversityAirplane Flying Handbook

Foundational Theories of Cataloging
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).
8

Foundational Theories of Cataloging, contin.
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).
9

Cataloging Example: Even LC varies!
10
What are some of these fields?!
What would you do different locally?

Illustrating Aviation: Paper Gliders! *Prizes*! Fastest praxis; furthest flight; closest guess on LC or Dewey call #
11
KWW method which I can demonstrate!
OR….
http://www.funpaperairplanes.com/Plane%20Downloads.html

Questions?
saratifr@gmail.comor
sarat@usc.edu or rsharp@speakeasy.net
Me and my buddy Robin at Edwards AFB Dry Lakebed Fly In 1 Oct 2010!

Rio grandenov10talk finalsansnotes

by Sara Tompson

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