Communication and governance
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Communication and Governance. 1860: Telegraph and Letters 1911: Airmail service 1917: Invisible ink banned / No useful information in letters 1940: Letters and diaries 1990: Email 2004: Freedom Calls 2010: Blogs / Skype. Excellent Data Resource: Worldmapper.

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Communication and Governance

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Communication and Governance

  • 1860: Telegraph and Letters

  • 1911: Airmail service

  • 1917: Invisible ink banned /

    No useful information in letters

  • 1940: Letters and diaries

  • 1990: Email

  • 2004: Freedom Calls

  • 2010: Blogs / Skype


Excellent Data Resource:

Worldmapper

Internet Users

2002

1990


http://www.colorado.edu/IBS/GAD/map.html

http://www.colorado.edu/ibs/GAD/

difmov.exe

http://www.colorado.edu/IBS/GAD/spacetime.html


Freedom House

Map of Freedom

2010

http://www.freedomhouse.org/template.cfm?page=505

http://www.freedomhouse.org/uploads/fiw10/FIW_2010_MOF.pdf


Watersheds of the World–Population Density

http://earthtrends.wri.org/text/water-resources/map-278.html


Access to Safe Water

  • Nearly 1.1 billion people (20% of the world’s population) lack access to safe drinking water.

  • Kills almost 4,500 children per day.

  • Worst “water stressed” countries in Sub-Saharan Africa and South Asia.

  • Climate and geography, lack of water systems and infrastructure, inadequate sanitation, high levels of arsenic and fluoride in drinking water.

  • Women and young girls trek as much as six miles everyday to retrieve water.

  • Obstacle to progress and development.

http://www.worldwaterday.net/index.cfm?objectid=E38C787B-F1F6-6035-B9D8092D300B7548


Water Scarcity and Stress


SECOND SESSION


http://www.cartoko.com/wiki/images/c/c4/Census_US_1940_Population_Distribution.jpg


Urbanization

Urban and Rural Places

  • Population size and density

  • Thomas Jefferson’s vision

  • Characteristics: anonymity, social interactions

  • Economic functions

  • Spatial arrangements

  • Special problems?


Scranton, USGS 1891

http://www.cartoko.com/wiki/index.php?title=Image:PA_scranton_15min_USGS_1891.jpg


1889


Scranton, Pennsylvania

http://lcweb2.loc.gov/cgi-bin/query/h?pp/PPALL:@field([email protected](det+4a32356))


Scranton, Pennsylvania – Google Earth

http://www.maplandia.com/united-states/pennsylvania/lackawanna-county/scranton/


Urban Areas

  • Environmental determinism: role of physical features – site and situation

  • Centrifugal forces: impel functions to migrate from central zone beyond it periphery

  • Centripetal forces: hold certain function in central zone and attract others

  • Central place theory: size and distribution of settlements dominated by marketing function


Central Place Theory

http://content.answers.com/main/content/img/oxford/Oxford_Geography/0198606737.central-place-theory.1.jpg

http://commons.wikimedia.org/wiki/File:Christaller's_central_place_theory_animation.gif


CommonCensus Map Projecthttp://www.commoncensus.org/


THIRD SESSION


Immigration andWestward Expansion


Auswanderer-karte und wegweiser nach Nordamerika

Immigrant Map and Signpost/Directory to North America


Where to settle?


Where to settle?


Immigrants as a Percentage

of US Population


Centers of Population http://www.census.gov/geo/www/cenpop/MeanCenter.html

Mean Population Point

Median Center of Population

The numerical center of population, is in no sense a center of gravity. In determining the median point, distance is not taken into account and the location of the units of population is considered only in relation to the intersecting median lines - as being north or south of the median parallel and east or west of the median meridian.

The center of population is the point at which an imaginary, weightless, rigid, and flat (no elevation effects) surface representation of the 48 conterminous states and the District of Columbia (or 50 states as appropriate to the computation) would balance if weights of identical size were placed on it so that each weight represented the location on one person.


http://en.wikipedia.org/wiki/File:Mean_ctr_pop_US_1790-2000.png


Thank you

[email protected]

www.uccs.edu/~coga


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