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Topic: Natural experiment



  
 CHAPTER 10: THE PHILADELPHIA EXPERIMENT AND ASCENSION
It was obvious that Allende was not the most literate person in the world, but his story was certainly a fantastic one: he had been present at the Norfolk Docks to witness the disappearance of a ship, erroneously referred to as the U.S.S. Eldridge, during the "Philadelphia Experiment."
The Philadelphia Experiment, as many of us already know, was a case where the United States apparently dematerialized an entire ship at the port of Norfolk, Virginia, transported it up to Penn’s Landing Area near Philadelphia, and then brought it back to Norfolk again, in 1943.
The Philadelphia Experiment crudely showed us that the idea of a dimensional shift is not at all outside the realm of possibility.
http://www.ascension2000.com/Shift-of-the-Ages/shift10.htm   (3766 words)

  
 Experiment - Wikipedia, the free encyclopedia
Occasionally events occur naturally from which scientific evidence can be drawn, which is the basis for natural experiments.
Robert Crease: The prism and the pendulum: The ten most beautiful experiments in science (ISBN 1400061318)
In human experiments, a subject (person) may be given a stimulus to which he or she should respond.
http://en.wikipedia.org/wiki/Experiment   (1878 words)

  
 The Guessing Game - Turing's Original Imitation Game
This experiment was funded in part by grants from the Simon's Rock College of Bard departments of Natural Science and Social Science.
We chose A.L.I.C.E. for a number of reasons: She portrayed a female, she was designed to play the OIG test, she had won the Loebner Prize three times.
Our confederates that posed as themselves and the men that posed as women— this experiment could not have occured without your dedication.
http://www.theguessinggame.net   (889 words)

  
 SSRN-Health Insurance and Households' Precautionary Behaviors - An Unusual Natural Experiment by Shin-Yi Chou, Jin-Tan Liu, James Hammitt
We use the natural experiment provided by the 1995 introduction of National Health Insurance in Taiwan to examine these effects, using pre-existing differences in access to health insurance (tied to the household head's and spouse's joint employment status) to identify the effects of increasing insurance coverage.
Chou, Shin-Yi, Liu, Jin-Tan and Hammitt, James K., "Health Insurance and Households' Precautionary Behaviors - An Unusual Natural Experiment" (December 2002).
Health Insurance and Households' Precautionary Behaviors - An Unusual Natural Experiment
http://papers.ssrn.com/sol3/papers.cfm?abstract_id=362076   (408 words)

  
 A Natural Experiment: Florida's Election-day and Absentee Voters in 2000
Because that format was not used for absentee ballots, the election gives us a natural experiment: one group of PBC voters (election day) used a butterfly ballot but a second group (absentee) did not.
The results of the election-day versus absentee ballot natural experiment strongly support the conclusion that Buchanan's anomalous support was caused by the butterfly ballot.
A limitation of this natural experiment is that the mechanism that allocates voters to either the election-day pool or the absentee pool is not random assignment (
http://elections.fas.harvard.edu/wssmh/node5.html   (953 words)

  
 ANU - CRES - Centre for Resource and Environmental Studies
The Nanangroe Natural Experiment is a longitudinal (long time frame) experiment which will allow the direct study of changes in fauna inhabiting woodland remnants as the surrounding grazed landscape is transformed into a radiata pine plantation.
All sites within the Nanangroe Natural Experiment will be sampled at regular intervals over the next 10 or more years to allow the direct study of change in species occurrence and community composition.
The Nanangroe experiment, funded by RIRDC focuses on a grazed woodland landscape near Jugiong in south-eastern New South Wales, approximately 15km from the boundary of the Tumut study area.
http://cres.anu.edu.au/dbl/nanangroestudy.php   (587 words)

  
 EconLog, A Natural Experiment in Foreign Aid (4-08-02): Library of Economics and Liberty
"Natural experiment" is a vogue term among academic economists.
John Weidner does not use the term, but in a very insightful post he describes the abundance of oil wealth in Arab countries as a natural experiment in foreign aid.
Weidner goes on to say that "Real wealth is in people and character, and no one can give to you." Is the natural experiment sufficient evidence to justify such a strong conclusion?
http://econlog.econlib.org/GQE/gqe148.html   (294 words)

  
 A Bird Flu Reassortment Experiment Under Natural Conditions
Thus the "natural" experiments show that many combinations are possible involving reshuffling of whole genes (reassortment) and creation of new genes (recombination).
A second set of experiments which infect the same cell with H5N1 and a human virus is more "natural", but many combinations of reassortants and recombinants are theoretically possible.
A Bird Flu Reassortment Experiment Under Natural Conditions
http://www.recombinomics.com/News/01260502/Reassortment_Experiment.html   (646 words)

  
 Daniel W. Drezner: Comment on Hezbollah generates a natural experiment
Personally, I reserve the term "natural experiment" for only cases where the treatment is predetermined/exogenous/orthogonal to the dependent variable.
Just a note: in a sense this was a poor "natural experiment" because the decision to try to hold the rally was endogenous.
I would say that the results of Dan's "natural experiment" are in.
http://www.danieldrezner.com/mt/mt-comments.cgi?entry_id=1923   (7988 words)

  
 Effects of steelhead density on growth of Coho salmon in a small coastal California stream
The experiment used 12 enclosed stream sections, each containing a pool and a portion of upstream riffle, with two replicates of three steelhead densities-zero, natural density (1X), and twice the natural density (2X)-on both the north and south forks.
Description: Abstract - Weight change in age-0 coho salmon, Oncorhynchus kisutch at about natural density was negatively related to the density of juvenile steelhead (anadromous rainbow trout O. mykiss) in a 6-week experiment conducted in July-August 1993 in the north and south forks of Caspar Creek, California.
The natural density of coho salmon was about one-sixth the density of steelhead.
http://www.treesearch.fs.fed.us/pubs/viewpub.jsp?index=7777   (7988 words)

  
 Measuring Risk Attitudes in a Natural Experiment: Data from the Television Game Show LINGO
Measuring Risk Attitudes in a Natural Experiment: Data from the Television Game Show LINGO
"Measuring Risk Attitudes in a Natural Experiment: Data from the Television Game Show Lingo," Economic Journal, Royal Economic Society, vol.
We use data from a television game show, involving elementary lotteries and substantial prize money, as a natural experiment to measure risk attitudes.
http://ideas.repec.org/p/cpr/ceprdp/1893.html   (440 words)

  
 ARS Natural Resources and SystemsScientificDirectory
Natural Resource Ctr, Add'tl Info Phone: 706-769-5631 ext.223 Fax: 706-769-8962 Email: afranz@arches.uga.edu Mailing Address: 1420 Experiment Station Road, Watkinsville, GA 30677-2373.
Natural Resource Ctr, Add'tl Info Phone: 706-769-5631 ext.225 Fax: 706-769-8962 Email: lharper@arches.uga.edu Mailing Address: 1420 Experiment Station Road, Watkinsville, GA 30677.
Natural Resource Ctr, Add'tl Info Phone: 706-769-5631 ext.203 Fax: 706-769-8962 Email: jsteiner@arches.uga.edu Mailing Address: 1420 Experiment Station Road, Watkinsville, GA 30677.
http://hydrolab.arsusda.gov/wdc/nridir.htm   (440 words)

  
 Natural experiment examining impact of aggressive screening and treatment on prostate cancer mortality in two fixed cohorts from Seattle area and Connecticut -- Lu-Yao et al. 325 (7367): 740 -- BMJ
Natural experiment examining impact of aggressive screening and treatment on prostate cancer mortality in two fixed cohorts from Seattle area and Connecticut -- Lu-Yao et al.
Natural experiment examining impact of aggressive screening and treatment on prostate cancer mortality in two fixed cohorts from Seattle area and Connecticut
to fully assess the outcome of this natural experiment.
http://bmj.bmjjournals.com/cgi/content/full/325/7367/740   (3657 words)

  
 American Journal of Agricultural Economics : Endowments, technology, and factor markets: a natural experiment of induced institutional innovation from China's rural reform. @ HighBeam Research
Endowments, technology, and factor markets: a natural experiment of induced institutional innovation from China's rural reform.
Start / A / American Journal of Agricultural Economics / May 01, 1995 / Endowments, technology, and factor markets: a natural experiment of induced institutional innovation from China's rural reform.
Current Article: Endowments, technology, and factor markets: a natural experiment of induced institutional innovation from China's rural reform.
http://static.highbeam.com/a/americanjournalofagriculturaleconomics/may011995/endowmentstechnologyandfactormarketsanaturalexperi/index.html   (276 words)

  
 A Natural Experiment 9/96
The study is noteworthy for the United States in that the conditions of this "natural experiment" eliminate variables with which researchers have had difficulty in recent attempts to measure the student grant effect.
This natural experiment offers an exceptionally good opportunity to study the effects of grants both in the aggregate and by the social grouping of students' parents.
The fact that the natural experiment took place in the absence of both tuition and other grant programs eliminates the need to control for such factors.
http://users.aol.com/joberg/grantsvsloans.html   (3627 words)

  
 EconPapers: Measuring the Returns to the GED: Using an Exogenous Change in GED Passing Standards as a Natural Experiment
The finding of no significant difference in pre-test taking earnings between the treatment and control group support the validity of the natural experiment.
Measuring the Returns to the GED: Using an Exogenous Change in GED Passing Standards as a Natural Experiment
Keywords: GED; returns to education; natural experiment (search for similar items in EconPapers)
http://netec.wustl.edu/WoPEc/data/Papers/izaizadpsdp1306.html   (339 words)

  
 A Natural Experiment: Election day and Absentee Voters in 2000
A limitation of this natural experiment is that the selection mechanism which allocates voters to either the election day pool or the absentee pool is not truly random.
Absentee voters in Florida are generally thought to be more politically conservative than election day voters, and this means that the natural experiment which fosters a comparison of election day and absentee ballots may be biased.
Since the 2000 absentee presidential ballot in Palm Beach County was not a butterfly ballot, we can make use of a natural experiment: one group of Palm Beach County voters (election day) used a butterfly ballot but a second group (absentee) did not.
http://elections.fas.harvard.edu/pc01/node7.html   (512 words)

  
 SSRN-The Information Content of Short Interest: A Natural Experiment by Tom Arnold, Alexander Butler, Timothy Crack, Yan Zhang
We extend the Diamond and Verrecchia model to include short selling against the box and we test the extended model using a natural experiment based around the Tax Payer Relief Act of 1997 (TRA97).
SSRN-The Information Content of Short Interest: A Natural Experiment by Tom Arnold, Alexander Butler, Timothy Crack, Yan Zhang
The Information Content of Short Interest: A Natural Experiment
http://papers.ssrn.com/sol3/papers.cfm?abstract_id=299393   (324 words)

  
 S-WoPEc: Ethnic enclaves and the economic success of immigrants - evidence from a natural experiment
S-WoPEc: Ethnic enclaves and the economic success of immigrants - evidence from a natural experiment
This policy initiative provides a unique natural experiment, which allows us to estimate the causal effect on labor market outcomes of living in enclaves.
Ethnic enclaves and the economic success of immigrants - evidence from a natural experiment
http://swopec.hhs.se/ifauwp/abs/ifauwp2000_009.htm   (270 words)

  
 Books : The Impact of Television : A Natural Experiment in Three Communities
Our goal is to use this natural experiment to understand the processes involved in television's influence and the complexities of relationships between TV and human behavior.
This book describes the results of a large research project based on an unusual opportunity to address these kinds of issues--a natural experiment involving a non-isolated Canadian town which did not obtain TV reception until late 1973.
Books : The Impact of Television : A Natural Experiment in Three Communities
http://www.arabiadirectory.com/0127562915/The_Impact_of_Television__A_Natural_Experiment_in_Three_Communities.shtml   (570 words)

  
 Experiment - definition of Experiment in Encyclopedia
In many laboratory experiments it is good practice to have several replicate samples for the test being performed and have both a positive control and a negative control.
On the other hand, in other cases such as biology, and medicine, it is often hard to ensure that the conditions of an experiment be performed consistently; and in the social sciences, it may even be difficult to determine a method for measuring the outcomes of an experiment in an objective manner.
In the scientific method, an experiment is a set of actions and observations, performed to verify or falsify a hypothesis or research a causal relationship between phenomena.
http://encyclopedia.laborlawtalk.com/Experiment   (2055 words)

  
 The double-slit experiment (September 2002) - Physics World - PhysicsWeb
For instance, it is widely claimed that Young performed his double-slit experiment in 1801 but he did not publish any account of it until his Lectures on Natural Philosophy in 1807.
Moreover, the Bologna experiment was performed under very difficult experimental conditions: the intrinsic coherence of the thermionic electron source used by the Bologna group was considerably lower than that of the field-emission source used in the Hitachi experiment.
We believe that we carried out the first experiment in which the build-up process of an interference pattern from single-electron events could be seen in real time as in Feynman's famous double-slit Gedanken experiment under the condition, we emphasize, that there was no chance of finding two or more electrons in the apparatus.
http://physicsweb.org/articles/world/15/9/1/1   (2055 words)

  
 Velocity Reversal and the Arrows of Time
This natural law has an unusual status, in that it is not only confirmed by observation and experiment, but it has also been "proved" by Boltzmann in his famous "H-theorem." We will have more to say about the H-theorem later.
The purpose of the present paper is to propose an experiment, at the level of a gedanken experiment, which distinguishes between Model A and Model B by giving a different result depending on which model is used.
As will be evident later in the paper, we propose a gedanken experiment involving velocity reversal of all components of an isolated system and ask, in the context of a particular model, if the time arrow is also reversed by this operation.
http://mist.npl.washington.edu/npl/int_rep/VelRev/VelRev.html   (2055 words)

  
 LEC12A.HTM
In my field, natural philosophy--physics if you wish, the term `gedanken experiment' is used to refer to a physical experiment which is impractical to carry out, but useful to consider because it can be reasoned theoretically.
Strictly speaking the experiment in the Republic does not qualify as an "official" gedanken because the observables are not physically measurable.
On the Experiment The "argument" of the Republic rests on a vision which is grounded in a rational process.
http://www.mala.bc.ca/~mcneil/LEC12A.HTM   (2055 words)

  
 Inter Research » MEPS » v145 » p161-177
For each experiment, we set up 4 orthogonal treatments in enclosures in each of 3 or 4 pools: (1) micrograzers removed and nutrients enriched, (2) micrograzers removed and nutrients at natural levels, (3) micrograzers at natural densities and nutrients enriched, and (4) both micrograzers and nutrients at natural levels.
In 1 pool in June, reduction in grazer density had a negative effect on pennate diatoms, cryptomonads and chlorophytes in the first week of the experiment, but a positive effect on pennate diatoms in the second week.
In 1 pool in August, nutrient enrichment had a positive effect on prasinophytes in the first week of the experiment, and grazer reduction had a negative effect on cryptomonads and chlorophytes in the second week.
http://www.int-res.com/abstracts/meps/v145/p161-177   (443 words)

  
 !Stephen J Gordon - book Stephen J Kominsky isbn 0834207192 0834207230 9996752364 0632041129 0262581337
Computational Learning Theory and Natural Learning Systems Intersections Between Theory and Experiment Stephen J Hanson Computational Learning Theory and Natural Learning Systems Intersections Between Theory and Experiment
Systematics of Cerion on New Providence Island A Radical Revision Bulletin of the American Museum of Natural History Vol 182 Article 4 Stephen J Gould Systematics of Cerion on New Providence Island A Radical Revision Bulletin of the American Museum of Natural History Vol 182 Article 4
Systematics and Evolution of the Ranunculiflorae Plant Systematics and Evolution Supplement 9 U Jensen J W Kadereit
http://www.literaturereview.net/72000_stephenjgordon.html   (443 words)

  
 Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
Methods of calculating the Snell Experiment'' (the exponential experiment in natural uranium) are examined.
PHYSICS; CRITICALITY; CROSS SECTIONS; DIFFUSION LENGTH; DISTRIBUTION; ERRORS; EXPONENTIAL PILES; FISSION; MASS; MATHEMATICS; MEASURED VALUES; NATURAL URANIUM FUEL; NEPTUNIUM 237; NEUTRONS; SNELL EXPERIMENT; SPECTRA; TRANSIENTS; TRANSPORT THEORY; URANIUM 238
The effect of spatial transients upon measured quantities is studied and it is found that experiments have not been done in a large enough mass of uranium to achieve an asymptotic neutron distribution.
http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=4627628   (220 words)

  
 An Experiment in Natural LInking vs SEO Threadwatch.org
For me, this is an interesting experiment in natural linking, word of mouth, the power of community and whether or not I have the stamina to maintain threadwatch's fast pace hehe!
An Experiment in Natural LInking vs SEO
As a natural result of operating in a link driven search landscape we may actually forget what a natural link looks like.
http://www.threadwatch.org/node/301   (747 words)

  
 Living Rivers News and Announcements
"These experiments will never succeed because they ignore fully restoring the natural processes the native fish require, which includes the pre-dam flow of sediment and nutrients."
A 1996 experiment, which sent 45,000 cfs down the river, failed to keep deposited sediment in the system long enough to benefit the ecosystem, largely because the release was too long, eventually scouring the beaches and sandbars it had built.
Ralston said the preliminary results of the November experiment are encouraging enough to merit further test flows, and the Grand Canyon Monitoring and Research Center is discussing a long-term plan for conducting periodic artificial floods.
http://riverguides.org/archives/article.cfm?NewsID=652   (747 words)

  
 Post Jungian Psychology using A Naturalized Epistemology
Like natural philosophers who postulated the existence of atoms over two thousand years prior to the notions of modern science and the empirical demonstration of the atom in 1905 by Einstein’s experiment on Brownian Motion, Carl Jung’s theoretical framework of the human psyche is anachronistically ahead of its time.
Natural philosophers even up until the time of Newton used the notion of “God,” primarily as a theoretical fudge-factor.
This is one of the central tenants of a naturalized epistemology – a theory of human knowledge and human archetypes that does not require that we explain the conscious or unconscious mind as anything other than the brain and the workings of the natural world.
http://www.divingin.com/towards.html   (747 words)

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