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imported>Hayford Peirce
(well, if we're gonna tell people that our welcome page is not protected, and frankly I dunno why we'd bother, let's at least make clear that it is, I suppose a symbol of our congeniality)
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{{Getting Started}}


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<center>'''"Share your knowledge. It's a way to achieve immortality."'''</center>
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<center>&mdash;[[Benjamin Spock|Dr. Benjamin Spock (1903-1998)]]</center>
<center>'''"Knowledge is the true organ of sight, not the eyes."'''</center>
<center>&mdash;From the [[Panchatantra|Panchatantra]] [http://www.britannica.com/EBchecked/topic/440899/Panchatantra (Indian literature)]</center>
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<center>&mdash;From the [[Panchatantra|Panchatantra]] [http://www.britannica.com/EBchecked/topic/440899/Panchatantra (Indian literature)]</center>
<center>'''"The ink of the learned is equal in merit to the blood of the martyrs."'''</center>
<center>&mdash;Father Kristoforos, [http://www.randomhouse.com/catalog/display.pperl?isbn=9781400079322&view=rg ''Birds Without Wings''], by [http://www.contemporarywriters.com/authors/?p=auth2 Louis de Bernières (b. 1954)]</center> -->
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=== Draft of the Week <font size=1>[ [[CZ:Article of the Week|about]] ]</font> ===
[[Image:Japaneseinternment.jpg|An internment camp in California {{photo|Ansel Adams}}|right|thumb]]
'''[[Korematsu v. United States]]''' was one of four [[Supreme Court of the United States|United States Supreme Court]] cases that dealt with the constitutionality of the [[Japanese internment]] during [[World War II]]. In its December 18, 1944 decision to uphold the internment, the Court argued forcefully that military necessity legitimates expansive federal government war powers, including those that curtail the civil liberties of specific racial groups.


The December 7, 1941 attack by [[Japan]] on [[Pearl Harbor]] prompted widespread concern about the security of the United States' West Coast and the possibility of espionage by members of its large Japanese-American population. On February 19, 1942, President [[Franklin D. Roosevelt]] responded by issuing [[Executive Order]] (EO) 9066, which authorized the Secretary of War and his designated commanders to establish "military areas" as they see fit and exclude "any or all persons" from entering or remaining within them. The main result of Roosevelt's order was the relocation of more than 100,000 Americans of [[Japanese]] descent from the West Coast into [[internment camp]]s in the interior of the United States. A month later, [[U.S._Congress|Congress]] passed Public Law 503, which criminalized violations of military orders issued as a result of EO 9066.


Persuant to EO 9066, on May 3, 1942, the U.S. army issued Civilian Exclusion Order Number 34, which instructed all persons of Japanese ancestry living in San Leandro, California to evacuate the area by the end of that week. Fred Korematsu, a California-born American citizen whose parents had emigrated from Japan in 1905, refused to comply with the exclusion order.
<font size=1>[[Korematsu v. United States|['''more...''']]]</font>


=== New Draft of the Week <font size=1>[ [[CZ:New Draft of the Week|about]] ]</font> ===
'''[[Vector rotation]]s''' are widely used not only in the sciences, such as [[physics]], [[chemistry]] and [[mathematics]], but are critical for graphics computations in [[computer game]] programs and navigation in space.  A typical example used in computer games would be calculating the graphics for a military tank rolling up a slanted hill, the relative rotation of the tank's turret, and the elevation of the tanks' barrel.  Although a rotation matrix for each point of the tank ''could'' be calculated individually, a more economical method is to calculate a single rotation matrix for the entire tank and apply that solution to every current position of the tank as it rolls up the hill.  Additional rotations are then used for the turret rotation by a second multiplication.


A variety of methods can be used to determine the rotation matrix (in 3D or 4D space) needed to convert vector V<sub>1</sub> into vector V<sub>2</sub>.  Because they provide non-unique results, inverse trigonometry functions should only be used with great caution.  [[Quaternions]], a 4-dimensional approach in 3D space, can also be used, and this method has devoted followers and critics. Although several 3D matrix rotation methods can be used, the method of Hughes (J. Graphics Tools, 2000) is particularly fast, because it avoids time-consuming inverse trigonometry and square root calculations, and avoids computational pitfalls of instability inherent to some of the previous methods. <font size=1>[[Vector rotation|['''more...''']]]</font>  
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<h4 style="margin:0 0 0.75em; padding:0;"> '''Article counts''' </h4>
<p style="line-height:15px; padding-left:20px;">
[[:Category:Citable versions of articles|Citable]] <font size=1>('''{{PAGESINCAT:Citable versions of articles}}''')</font><br />
[[:Category:Developed Articles|Developed]] <font size=1>('''{{PAGESINCAT:Developed Articles}}''')</font><br />
[[:Category:Developing Articles|Developing]] <font size=1>('''{{PAGESINCAT:Developing Articles}}''')</font><br />
[[:Category:Stub Articles|Stubs]] <font size=1>('''{{PAGESINCAT:Stub Articles}}''')</font><br />
<small>([[:Category:CZ Live|{{PAGESINCAT:CZ Live}} total]])</small>
</p>
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----<h3 style="margin-top:0; padding-top:0.6em; border-top:1px dotted #e0e0e0;">
<big>[[CZ:Featured article|Featured Article]]: ''[[{{FeaturedArticleTitle}}]]''</big>
</h3>
{{CZ:Featured article/Current}}
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<div style='text-align: right;'><small>''[[{{FeaturedArticleTitle}}|Continued]]...''</small></div>

Latest revision as of 08:47, 31 October 2024

New Blog Post
Why is Citizendium deleting articles?


Help Write Articles about our World

Welcome to Citizendium, a wiki for providing free knowledge where authors use their real names. We regard information as a public good and welcome anyone who wants to share their knowledge on virtually any subject. Our online community prides itself on being congenial and supportive.

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Article counts

Citable (146)
Developed (1,129)
Developing (7,398)
Stubs (7,675)
(16,478 total)

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge.
Enrico Fermi (1901–1954)
       —add a quotation about knowledge or writing


Featured Article: Poverty

The Mathare Valley slum near Nairobi, Kenya, in 2009.

Poverty is deprivation based on lack of material resources. The concept is value-based and political. Hence its definition, causes and remedies (and the possibility of remedies) are highly contentious.[1] The word poverty may also be used figuratively to indicate a lack, instead of material goods or money, of any kind of quality, as in a poverty of imagination.

Definitions

Primary and secondary poverty

The use of the terms primary and secondary poverty dates back to Seebohm Rowntree, who conducted the second British survey to calculate the extent of poverty. This was carried out in York and was published in 1899. He defined primary poverty as having insufficient income to “obtain the minimum necessaries for the maintenance of merely physical efficiency”. In secondary poverty, the income “would be sufficient for the maintenance of merely physical efficiency were it not that some portion of it is absorbed by some other expenditure.” Even with these rigorous criteria he found that 9.9% of the population was in primary poverty and a further 17.9% in secondary.[2]

Absolute and comparative poverty

More recent definitions tend to use the terms absolute and comparative poverty. Absolute is in line with Rowntree's primary poverty, but comparative poverty is usually expressed in terms of ability to play a part in the society in which a person lives. Comparative poverty will thus vary from one country to another.[3] The difficulty of definition is illustrated by the fact that a recession can actually reduce "poverty".

Causes of poverty

The causes of poverty most often considered are:

  • Character defects
  • An established “culture of poverty”, with low expectations handed down from one generation to another
  • Unemployment
  • Irregular employment, and/or low pay
  • Position in the life cycle (see below) and household size
  • Disability
  • Structural inequality, both within countries and between countries. (R H Tawney: “What thoughtful rich people call the problem of poverty, thoughtful poor people call with equal justice a problem of riches”)[4]

As noted above, most of these, or the extent to which they can be, or should be changed, are matters of heated controversy.

Footnotes

  1. Alcock, P. Understanding poverty. Macmillan. 1997. ch 1.
  2. Harris, B. The origins of the British welfare state. Palgrave Macmillan. 2004. Also, Oxford Dictionary of National Biography.
  3. Alcock, Pt II
  4. Alcock, Preface to 1st edition and pt III.