Slascc Talk 032311


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A slightly different version of the SLA Rio Grande presentation, crosswalking between aviation and librarianship.

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Slascc Talk 032311

  1. 1. + SLA SouthernCalifornia Chapter 23 March 2011 by Sara R. Tompson with Eric Sharp 1. AGENDA 2. Introductions – around the room 3. Definition 4. Aviation Theory into Practice overview 5. Librarianship Theory into Praxis: Where Theory Practice overview Meets Practice 6. DIY! In Aviation and Librarianship
  2. 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 / SLA SCC March 2011
  3. 3. + Foundational Theories of Flight: Atmosphere 3 Flight is based upon and obeys laws or rules of our universe. E.g.: Air = 14.7 PSI; Including the laws of based on column fluid dynamics – of air from sea these apply to air as level to stratosphere. well as water. R.Sharp mod of FAA / SLA SCC March 2011
  4. 4. + Foundational Theories of Flight: 4 Wings/Airfoils (Newton, 1643-1728; Bernoulli, 1700-1782) 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 R.Sharp and S. pushed up. ~ 70% of “lift” Tompson mod of FAA comes from this action. / SLA SCC March 2011
  5. 5. + Foundational Theories of Flight: 4 Forces of 5 Flight (Straight & Level = Zero ratios: Lift=Weight, Thrust=Drag)See this NASA site forkids and teachers forreally goodexplanations! R.Sharp mod of FAA / SLA SCC March 2011
  6. 6. + Foundational Theories of Flight: The Stall 6 illustrates an imbalance in the forces; you can only bend the rules so far! 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.” R.Sharp mod of FAA / SLA SCC March 2011
  7. 7. + Foundational Theories of Flight: Let’s Do It! 7 Stall Practice Illustrated From Wikiversity Airplane Flying / SLA SCC March 2011
  8. 8. + 8 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) / SLA SCC March 2011
  9. 9. + 9 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.  RDA/MARC 21 (currently being implemented): Resource Description & Access  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) / SLA SCC March 2011
  10. 10. + Cataloging Example: Even LC varies! 10 POP QUIZ! What are some of these fields?! What would you do different locally? / SLA SCC March 2011
  11. 11. + Illustrating Aviation: Paper Gliders! 11 *Prizes*! furthest flight; closest guess on LC or Dewey call # My husband’s method which I will demonstrate  If you want to try another method at home  / SLA SCC March 2011
  12. 12. +Questions? Me and my buddy Robin at Edwards AFB Dry Lakebed Fly-In 1 Oct 2010!! Our chapter gets to go there in May!