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Topic: Reverse migration


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  Reverse migration - Wikipedia, the free encyclopedia
Reverse migration is a phenomenon in bird migration.
The correct migration route to the wintering grounds in south east Asia is indicated in red.
Although "reverse migration" per se may occur, it is unable to explain the occurrence in Europe in autumn of Asian vagrants that winter in East Africa, or the rarity of many southern European species in the UK that winter in West Africa.
en.wikipedia.org /wiki/Reverse_migration   (357 words)

  
 Bird migration - Wikipedia, the free encyclopedia
Many species of land migratory birds migrate very long distances, the most common pattern being for birds to breed in the temperate or arctic northern hemisphere and winter in warmer regions, often in the tropics or the temperate zones of the southern hemisphere.
An interesting example where a change of migration route has occurred because of such a geographical barrier is the trend for some Blackcaps in central Europe to migrate west and winter in Britain rather than cross the Alps.
An example is the migration of continental populations of Swainson's Thrush, which fly far east across North America before turning south via Florida to reach northern South America; this route is believed to be the consequence of a range expansion that occurred about 10,000 years ago.
en.wikipedia.org /wiki/Bird_migration   (2526 words)

  
 NPWRC :: Migration of Birds
Dog-leg migration patterns are characterized by a prominent bend in the route.
The vertical migrations of some mountain-dwelling gallinaceous birds (for example, Mountain Quail and Blue Grouse) are quite interesting because the annual journey from breeding to wintering grounds is made on foot.
These movements cannot be considered as true migrations even though they are repeated annually by the species between breeding grounds and some other area, since these movements are generally repeated by the same age class in the population but not the same individuals.
www.npwrc.usgs.gov /resource/birds/migratio/patterns.htm   (3616 words)

  
 IRAN: Focus on reverse migration
To create or plan the policy of reverse migration, investment is the key to success," Dr Dariush Haidari-Bigvand, the head of the research project at Ferdowsi University, told IRIN.
"Migration in Iran does not solely depend on economic factors, and many more factors, such as security, social and cultural viewpoints, are involved.
Nevertheless, migration in these provinces continued, which means government investments won’t guarantee the decrease in the migration process," he said.
www.payvand.com /news/03/nov/1135.html   (1055 words)

  
 Reverse Migration | Pullout | Street Eats | The Stranger, Seattle's Only Newspaper
Reverse migration isn't an original idea, and it may be a flawed one.
Her hair was peroxide blonde and she had a lovely scar across her brow that came from a head-on car crash she'd caused when she swerved to miss a cat on a country highway.
She was a reverse refugee from the city, just like me. She'd returned to the country to calm down.
www.thestranger.com /seattle/Content?oid=18634   (1357 words)

  
 USGS, Sedimentology - Figure 18   (Site not responding. Last check: 2007-10-25)
Reversals in asymmetry also produce zig-zags in the centers of the bedform troughsa feature that is not produced by reversals in migration direction.
Distinguishing the structures formed by the different kinds of bedform reversals (asymmetry or migration direction) is, therefore, important because the structures indicate flow reversals on different time scales.
This kind of structure, however, could be expected to form in convergence zones in reversing flows such as might occur at isolated locations on some tidal ridges, at eddy-reattachment zones along river banks, at restricted locations in fields of linear eolian dunes or symmetrical sand waves, or at restricted sites in wave-generated flows.
walrus.wr.usgs.gov /seds/fig18.html   (619 words)

  
 migration - a definition from Whatis.com
Migration could also mean moving from Windows NT to a UNIX-based operating system (or the reverse).
Migration can be small-scale, such as migrating a single system, or large-scale, involving many systems, new applications, or a redesigned network.
Migration is also used to refer simply to the process of moving data from one storage device to another.
searchcio.techtarget.com /sDefinition/0,,sid19_gci214624,00.html   (311 words)

  
 AAME :
In the narrative The Second Great Migration, the sections, "Causes of the Migrations—Pushes" and "Reverse Migration" recount the impact of federal government policies that were intended for one purpose but also had unintended consequences on migration.
Appropriate for middle school and high school students, the lesson's goal is to facilitate students' understanding of the causes of this migration and the impact it had on its destination communities.
Migration and Political Power is a lesson plan that may be used in history or political science/government classes.
www.inmotionaame.org /education/detail.cfm?migration=9&topic=10&type=educationmaterials   (944 words)

  
 JAIC 1993, Volume 32, Number 1, Article 1 (pp. 01 to 14)
Two of the many possible explanations for the discoloration or darkening of porous or powdering paint resulting from consolidation are: (1) the differences in the refractive indices of pigment and vehicle; and (2) reverse migration of polymer from the interior to the surface with solvent evaporation.
This process is often termed “reverse migration.” Reverse migration has been extensively discussed in relation to stone consolidation by Domaslowski (1987–88).
He found that the most important factor in limiting reverse migration is the solvent “quality,” or the tendency of the dissolved polymer to remain dissolved in a solvent.
aic.stanford.edu /jaic/articles/jaic32-01-001_3.html   (559 words)

  
 IN - Rise of the Phoenix: A Trend in Reverse Migration
We classify this as a 'Reverse Migration' and interesting fallout of this is resurgence in the Intelligent Network (IN) technology that was written off by industry pundits in the late nineties.
This process of reverse migration is not easy, but if worked out well can correct the path of diminishing returns and address current customer demands in varied market segments.
Reverse migration is nothing new, however this trend is emerging in IN-IP convergence – driven by market conditions that require increased efficiency and more competitive offerings.
www.tmcnet.com /tmcnet/articles/2003/101603in.htm   (1393 words)

  
 Reverse Time Migration
Current migration methods face limitations in the presence of complex, steeply dipping reflectors such as those found on salt flanks.
Reverse time migration (RTM) overcomes these constraints, enabling structures with dips greater than 90 degrees to be properly imaged.
Standard wave equation techniques utilize mathematical approximations which assume that wavefields propagate in only one direction — down for the source wavefield and up for the receiver (or scattered) wavefield.
www.i-o.com /Processing/Marine/RTM   (262 words)

  
 Cunha: Reverse-time Migration
Migration-based methods have been proposed recently as a solution for correctly estimating angle-dependent reflectivity in the presence of complex structures.
I evaluate the use of different imaging conditions for anisotropic prestack reverse-time migration that aim the estimation of the reflectivity as a function of the local illumination angle.
Emphasis is given to a particular imaging criterion that generates four simultaneous images.
sepwww.stanford.edu /public/docs/sep73/carlos3/paper_html   (95 words)

  
 Black migration in reverse: African Americans are leaving major cities for opportunities in the South. | Business ...   (Site not responding. Last check: 2007-10-25)
Black migration in reverse: African Americans are leaving major cities for opportunities in the South.
According to The New Great Migration Black American's Return to the South, 1965-2000 during the Fatter part of the '90s, the South was the only region in the U.S. that saw an increase in fl residents.
"Black migration in reverse: African Americans are leaving major cities for opportunities in the South." is an article from the Business (General) category.
www.allbusiness.com /periodicals/article/407420-1.html   (528 words)

  
 Cool Solutions: Reverse Migration
Wayne S. wrote: According to TID 2934236, when you remove NDS for NT a reverse migrate through the Domain Object Wizard is performed.
Wayne, the reverse migration is working, and some (including us) would go so far as to say it's working very well.
During the reverse migrate, the SAMSRV.DLL will be renamed and the "Migration Filter-File" will be used.
www.novell.com /coolsolutions/qna/6236.html   (246 words)

  
 Imperva Announces Reverse Proxy Migration Promotion
In addition, Imperva is extending an offer of free deployment and migration services and 1 year support for any customer that replaces their legacy reverse proxy deployment with SecureSphere.
By replacing their legacy reverse proxy application firewalls with SecureSphere, organizations can dramatically reduce their total cost of ownership (TCO) with a solution that requires no changes to their existing network and application infrastructure and no on-going manual tuning.
SecureSphere’s performance is 5 to 10 times better than reverse proxy implementations for both throughput and latency because Transparent Inspection requires less processing overhead than the reverse-proxy architecture.
www.imperva.com /company/news/2005-may-18a.html   (586 words)

  
 Contents
The season was defined by extensive shorebird habitat, frequent cold fronts, and a pronounced reverse migration.
The least heralded event of the season was the significant reverse migration of land birds in late Oct. Reverse migration, when birds reverse their normal direction (northwards in fall), has been well observed along the East Coast, but usually is poorly defined in Ohio.
The period, not coincidentally, was marked by an enormous surge of warm air from the southwest.
www.aves.net /magazine/vol1no2.htm   (578 words)

  
 Blacks Return to South In a Reverse Migration
But now, with the promise unfulfilled in many cases, significant numbers of fls are returning to the South, coming ``back down home'' to a region that seems, at last, to offer as many economic opportunities and as much brotherhood as any other section of the United States.
He says that fls coming South these days tend to be slightly better educated than fls as a whole, that they usually are in their 30's, that most do not have large families and that most settle in cities.
Wondering about the long-range implications of return migration, the Southern Growth Policies Board, a research and planning agency, supported by states in the region, asked the Census Bureau for an analysis of all available statistics.
partners.nytimes.com /library/national/race/061874race-ra.html   (1399 words)

  
 MEMPHIS MANIFESTO: The Great (Reverse) Migration News and Discussion The Great (Reverse) Migration   (Site not responding. Last check: 2007-10-25)
Anyone who has studied American history knows about the Great Migration, the movement of millions of African Americans from the South to the industrial North and West, roughly from the start of World War I to the end of the 1960s.
Now these cities and other places are being reshaped again, this time by a reversal of the Great Migration.
The reverse migration has two forces, too: opportunity (this time, there appears to be more of it in the South) and cultural identity.
www.memphismanifesto.com /news/archives/000305.php?PrintVersion=on   (401 words)

  
 Adhesion, Transendothelial Migration, and Reverse Transmigration of In Vitro Cultured Dendritic Cells -- D'Amico et al. ...   (Site not responding. Last check: 2007-10-25)
During migration from the tissue of residence to afferent lymphatics, DC interact with extracellular matrix (ECM) and with
Because migration is preceded by adhesion, anti-CD18 inhibited
Adhesion to ECM and reverse transmigration of DC.
www.bloodjournal.org /cgi/content/full/92/1/207   (5217 words)

  
 WUNC News - Features Archive » Reverse Migration
A large number of those moving to the South are African Americans.
Demographers call the movement reverse migration, a reference to the time between 1910 and 1950 when millions of fls in the South up-rooted their families and moved to cities in the North.
North Carolina ranks high on the migration list and many of these newcomers are moving to the triangle.
www.ibiblio.org /wunc_archives/news/index.php?p=471   (107 words)

  
 AthensNews onLine SEARCH
This literature tended to focus on the migration experience, the tensions and challenges of making a life in a new land.
These days, issues of migration and displacement seem passe to the group of second and third generation Greeks who now call themselves Australians.
Petsinis has tapped into another phenomenon that explores the inextricable link between the Diaspora and mother Greece, that of reverse migration - young second or third generation Greek-Australians are heading back to their parents' birthplace, taking the same journey their parents took only in reverse, completing the circle, as it were.
www.athensnews.gr /athweb/nathens.print_unique?e=C&f=12833&m=A10&aa=1&eidos=S   (1996 words)

  
 NewsForge | Reverse Migration: From Linux to Windows   (Site not responding. Last check: 2007-10-25)
When a company talks about migrating from Windows to Linux, there is a group at Microsoft which gets informed.
Consequently, they succeed in stopping some of these migrations.
They try to learn as much as possible from the migrations they fail to stop.
www.newsforge.com /newsvac/04/09/27/1733206.shtml   (487 words)

  
 Adhesion, Transendothelial Migration, and Reverse Transmigration of In Vitro Cultured Dendritic Cells -- D'Amico et al. ...
Adhesion, Transendothelial Migration, and Reverse Transmigration of In Vitro Cultured Dendritic Cells -- D'Amico et al.
Adhesion, Transendothelial Migration, and Reverse Transmigration of In Vitro Cultured Dendritic Cells
Migration of human blood dendritic cells across endothelial cell monolayers: adhesion molecules and chemokines involved in subset-specific transmigration
www.bloodjournal.org /cgi/content/abstract/92/1/207   (1382 words)

  
 BSI Blog » Blog Archive » My reverse migration
He is now dedicated to understanding and protecting the land where North America's birds are born and raised, the boreal forest of Canada and Alaska.
Having undertaken a journey like this, traveling thousands of miles across the continent, I can’t help but be astounded that birds—little birds—migrate these distances under their own power.
Now the birds of the Boreal are already beginning their southward journey, many of them more-or-less retracing the route I have taken today but in reverse.
www.borealbirds.org /blog?p=26   (344 words)

  
 Cell Phones - Reverse Migration IS possible ?
Cell1 is a free, independent resource made available to you by a group of volunteers.
I've come to find out, that reverse migration is indeed possible, with
migrate, and to provide the phone number I was given:
www.cell1.org /detail-9262473.html   (173 words)

  
 CE Courses   (Site not responding. Last check: 2007-10-25)
Simple mathematical derivations are used to numerically describe the partial differential equations of wave propagation and the corresponding boundary conditions.
Following the research of Whitmore, McMechan, and Baysal et al., it is shown how wave modeling can be transformed into reverse-time migration methods by backward propagation of the seismic wavefield from the recording surface to the reflector depth.
Data examples show enhanced reverse-time migration images of complicated geological structures such as salt intrusions and overthrust folds.
www.seg.org /services/ce/curriculum/seismodeling.html   (187 words)

  
 Reverse Migration Expert :: University Communications Newsdesk, University of Maryland
Reverse Migration Expert :: University Communications Newsdesk, University of Maryland
A new Census Bureau report indicates that African Americans are heading to the South in record numbers.
A story by the Associated Press reported that those making this "reverse migration" are doing so for a number of reasons: to get an education, find a job, start a family and be with like-minded fls.
www.newsdesk.umd.edu /culture/release.cfm?ArticleID=832   (323 words)

  
 IGM Comments: Reverse migration will start to bite soon   (Site not responding. Last check: 2007-10-25)
Let's face it, PCs are cheap right now in comparison to Macs when performance is taken into account, and Win 2K/XP, although not as good or elegant as MacOS X, are plenty good enough and have very rich functionality.
This will in fact not be primarily because of the performance gap, but because of the only conclusion one can come to from this evidence, namely that the platform will become doomed because of a dramatically reducing user base.
MacOS X may be neat in many ways, but that by itself is just not enough for its survival if the platform that it runs on is too far behind in terms of price/performance.
www.insanely-great.com /cpop.php?reply=4164   (358 words)

  
 BlogOnGlob: Reverse Migration to India   (Site not responding. Last check: 2007-10-25)
Mitra Kalita of the Washington Post tells an interesting story about reverse migration to India.
Indian immigrants, who have become very successful in the high-tech industry, are going back to India to exploit the increasing opportunities there, even with a huge paycut.
In the entire piece, this quote by Dutt Kalluri, who recently made such a reverse trip, is telling:
www.stanford.edu /~moonhawk/bog/archives/2006/03/reverse_migrati.html   (183 words)

  
 Kshema Technologies Engineering Design Services-Legacy Data Migration and Reverse Engg Page   (Site not responding. Last check: 2007-10-25)
Much of the critical design data from complex 2-D to 3-D required for the next generation design and manufacturing, was migrated.
Many of the products required reverse engineering, with value addition being made to the design and the product.
Many of the projects are related to tooling, moulds and dies, an area where frequent usage results in severe wearing away of the products during operation, adversely affecting the component accuracy.
www.kshema.com /In_EDS-LegMignReEngg.htm   (139 words)

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