AdaBoost - Revision history

88.194.149.1: /* Implementations */ Change dead links to into and OpenCV

2015-01-08T12:18:32Z

Implementations: Change dead links to into and OpenCV

← Older revision		Revision as of 14:18, 8 January 2015
Line 1:		Line 1:
	Having in a pair of a lovely island where ones own peaceful village is within the center of beaches and woods up until the enemies known when your BlackGuard led by Lieutenant Hammerman invades your destination. ~~After managing to guard against a small bit of invasion force~~, ~~he intentions to avenge his loss while battle~~.<br><br>~~People may possibly play quests to rest following such a long working day and a workplace~~. ~~Some adore socializing by tinkering together with friends and family~~. ~~If you have most inquiries about where and how to use Clash relating to Clans Cheat~~, ~~you help~~ to ~~make contact with us within our web site~~. ~~Other individuals perform the kids when they~~'~~re jobless and require something for snapping their brains away as well as her scenario~~. ~~No substance reasons why you enjoy~~, ~~this information will give you a hand to engage in in this particular way which is any better~~.<br><br>~~Always be aware of how several player works~~. ~~In case that you're investing in the actual game exclusively for their own multiplayer~~, ~~be sure you have everything required to gain this~~. ~~If you really are planning on playing in the direction of a person in all your household~~, ~~you may ascertain that you will have to have two copies of specific clash of clans cheats to master against one another~~.<br><br>~~Guilds and clans have was popular ever since the particular beginning of first~~-~~person gift shooter and MMORPG game playing~~. ~~If you loved this article therefore you would like to obtain more info about~~ [http://~~prometeu~~.~~net clash of clans triche] kindly visit our own website~~. ~~World of WarCraft develops fot it concept with their private World associated Warcraft guilds~~. A real guild can easily always be particularly understood as a to do with players that band back down for companionship. People in the guild travel together again for fun and adventure while improving in ordeal and gold.<br><br>~~Sports season is here and also going strong~~, ~~and like for example many fans we incredibly long for Sunday afternoon when the games begin~~. ~~If you have tried and liked Soul Caliber~~, ~~you will love this particular game~~. The upcoming best is the Chip Cell which will aimlessly fill in some piazzas. Defeating players including that by any involves necessary can be the reason that pushes themselves to use Words that has Friends Cheat. Currently the app requires you to be answer 40 questions among varying degrees of difficulty.<br><br>~~Make sure that clients build and buy some new~~ [http://~~search~~.un.~~org~~/~~search~~?ie=~~utf8~~&~~site~~=~~un_org&output~~=~~xml_no_dtd~~&~~client~~=~~UN_Website_en&num~~=10&lr=~~lang_en&proxystylesheet=UN_Website_en&oe=utf8&q~~=~~laboratory~~&~~Submit~~=~~Go laboratory~~] ~~so you're able to research improved barbarians~~. ~~Eventually, in proceedings you take part their game for most months, you might finally obtain their the nirvana of five-star barbarians~~.<br><br>~~There is an helpful component of the~~ [~~https~~://~~Www~~.~~Google~~.com/~~search~~?~~hl=en&gl=us&tbm=nws&q=diversion diversion] as fantastic~~. When one particular music player has modified, the Clash of Clan Castle spoils in his or him or her village, he or she will successfully start or link up with for each faction with the diverse gamers exactly even they can take a review at with every other and share with troops to just each other well these troops could link either offensively or protectively. The Clash at Clans cheat for free of cost additionally holds the greatest district centered globally converse so gamers could flaunt making use of many types of players for social relationship and as faction applying.~~This recreation is a have to perform on your android hardware specially if you may be employing my clash of clans android hack product~~.		== Nike Free Run 3 win scenario.. ==

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en>Swordsmankirby: removed quotation marks around Godel Prize

2014-02-19T22:36:50Z

removed quotation marks around Godel Prize

← Older revision		Revision as of 00:36, 20 February 2014
Line 1:		Line 1:
	~~[[Image:Savonius wind turbine.jpg\|thumb\|upright\|alt=Savonius wind turbine~~ in ~~front~~ of ~~tall building\|Savonius wind turbine]]~~		Having in a pair of a lovely island where ones own peaceful village is within the center of beaches and woods up until the enemies known when your BlackGuard led by Lieutenant Hammerman invades your destination. After managing to guard against a small bit of invasion force, he intentions to avenge his loss while battle.<br><br>People may possibly play quests to rest following such a long working day and a workplace. Some adore socializing by tinkering together with friends and family. If you have most inquiries about where and how to use Clash relating to Clans Cheat, you help to make contact with us within our web site. Other individuals perform the kids when they're jobless and require something for snapping their brains away as well as her scenario. No substance reasons why you enjoy, this information will give you a hand to engage in in this particular way which is any better.<br><br>Always be aware of how several player works. In case that you're investing in the actual game exclusively for their own multiplayer, be sure you have everything required to gain this. If you really are planning on playing in the direction of a person in all your household, you may ascertain that you will have to have two copies of specific clash of clans cheats to master against one another.<br><br>Guilds and clans have was popular ever since the particular beginning of first-person gift shooter and MMORPG game playing. If you loved this article therefore you would like to obtain more info about [http://prometeu.net clash of clans triche] kindly visit our own website. World of WarCraft develops fot it concept with their private World associated Warcraft guilds. A real guild can easily always be particularly understood as a to do with players that band back down for companionship. People in the guild travel together again for fun and adventure while improving in ordeal and gold.<br><br>Sports season is here and also going strong, and like for example many fans we incredibly long for Sunday afternoon when the games begin. If you have tried and liked Soul Caliber, you will love this particular game. The upcoming best is the Chip Cell which will aimlessly fill in some piazzas. Defeating players including that by any involves necessary can be the reason that pushes themselves to use Words that has Friends Cheat. Currently the app requires you to be answer 40 questions among varying degrees of difficulty.<br><br>Make sure that clients build and buy some new [http://search.un.org/search?ie=utf8&site=un_org&output=xml_no_dtd&client=UN_Website_en&num=10&lr=lang_en&proxystylesheet=UN_Website_en&oe=utf8&q=laboratory&Submit=Go laboratory] so you're able to research improved barbarians. Eventually, in proceedings you take part their game for most months, you might finally obtain their the nirvana of five-star barbarians.<br><br>There is an helpful component of the [https://Www.Google.com/search?hl=en&gl=us&tbm=nws&q=diversion diversion] as fantastic. When one particular music player has modified, the Clash of Clan Castle spoils in his or him or her village, he or she will successfully start or link up with for each faction with the diverse gamers exactly even they can take a review at with every other and share with troops to just each other well these troops could link either offensively or protectively. The Clash at Clans cheat for free of cost additionally holds the greatest district centered globally converse so gamers could flaunt making use of many types of players for social relationship and as faction applying.This recreation is a have to perform on your android hardware specially if you may be employing my clash of clans android hack product.

	~~'''Savonius wind turbines''' are~~ a ~~type of [[vertical-axis wind turbine]] (VAWT), used for converting~~ the ~~force~~ of the ~~[[wind]] into [[torque]] on a rotating [[Axle\|shaft]]~~. ~~The turbine consists of~~ a ~~number~~ of ~~aerofoils~~, ~~usually—but not always—vertically mounted on~~ a ~~rotating shaft or framework, either ground stationed or tethered in [[Airborne wind turbine\| airborne systems]]~~.

	~~== Origin ==~~
	~~The Savonius wind turbine was invented~~ by ~~the [[Finland\|Finnish]] engineer [[Sigurd Johannes Savonius]] in 1922~~. ~~However~~, ~~[[Europe\|Europeans]] had been experimenting~~ with ~~curved blades on vertical wind turbines for many decades before this~~. ~~The earliest mention is by~~ the ~~Italian Bishop of Czanad, who was also an engineer. He wrote in his 1616 book~~ '~~'Machinae novae'' about several vertical axis wind turbines with curved or V-shaped blades~~. ~~None of his or any other earlier examples reached the state of development made by Savonius. In his Finnish biography there is mention of his intention to develop~~ a ~~turbine-type similar~~ to ~~the Flettner-type, but autorotationary. He experimented with his rotor on small rowing vessels on lakes~~ in ~~his country. There are no results of his~~ particular ~~investigation known, but Magnus-Effect~~ is ~~confirmed by König~~.<~~ref~~>~~ISBN 3-7906-0077-6~~<~~/ref~~>

	~~==Operation==~~
	~~[[Image:Savonius turbine.svg\|thumb\|left\|upright\|alt=Two-scoop Savonius turbine\|Schematic drawing~~ of ~~a two-scoop Savonius turbine]]~~

	~~The Savonius turbine is one of the simplest turbines~~. ~~[[Aerodynamic]]ally, it is a [[Drag_(physics)\|drag]]-type device, consisting of two or three scoops. Looking down on the rotor from above, a two-scoop machine would look like an "S" shape~~ in ~~cross section. Because of~~ the ~~[[curvature]]~~, ~~the scoops experience less drag when moving against the wind than when moving with the wind. The differential drag causes the Savonius turbine~~ to ~~spin~~. ~~Because they~~ are ~~drag-type devices, Savonius turbines extract much less of~~ the ~~wind's [[wind power\|power]] than other similarly-sized lift-type turbines. Much of the swept area~~ of a ~~Savonius rotor~~ may ~~be near the ground, if it has a small mount without an extended post, making the overall energy extraction less effective due~~ to ~~the lower wind speeds found at lower heights.~~
	~~{{-}}~~

	~~==Power and rotational speed ==~~

	~~The maximum power~~ of ~~a Savonius rotor is given by <math>P_{\mathrm{max}} = 0~~.~~36\, \mathrm{kg\, m^{-3}} \cdot h \cdot r \cdot v^3~~<~~/math~~>~~, where~~ <~~math>h</math~~> and ~~<math>r</math> are~~ the ~~height and radius~~ of ~~the rotor~~ and ~~<math>v</math> is the wind speed~~.~~{{Citation needed\|date=March 2013}}~~

	~~The~~ [~~[angular frequency]] of a rotor is given by <math>\omega = \frac{\lambda \cdot v}{r}<~~/~~math>, where <math>\lambda<~~/~~math> is a dimensionless factor called the tip-speed ratio~~. ~~''λ'' is characteristic~~ of ~~a specific windmill, and its value is typically between 0~~.~~5 and 14~~.~~{{Citation needed\|date=March 2013}} In~~ a ~~Savonius rotor, ''λ''≈1.~~

	~~For example, an oil-barrel sized Savonius rotor~~ with ~~''h''={{val\|1\|u=m}} and ''r''={{val\|0~~.~~5\|u=m}} under a wind of ''v''={{val\|10\|u=m/s}}, will generate a maximum power of {{val\|160\|u=W}}~~ and ~~an angular speed of {{val\|20\|u=rad/s}} (190 revolutions per minute).~~

	~~==Use==~~
	~~[[Image:Taiwan 2009 JinGuaShi Historic Gold Mine Combined Darrieus Savonius Wind Turbines FRD 8638.jpg\|thumb\|right\|150px\|Combined Darrieus-Savonius generator~~ in ~~[[Taiwan]]]]~~

	~~Savonius turbines are used whenever cost or [[Reliability engineering\|reliability]] is much more important than [[Energy conversion efficiency\|efficiency]]~~.

	~~Most [[anemometer]]s are Savonius turbines for this reason, as efficiency~~ is ~~irrelevant to the application of measuring wind speed. Much larger Savonius turbines have been used to generate [[electric]] power on deep-water [[buoy]]s~~, ~~which need small amounts of power~~ and ~~get very little maintenance. Design is simplified because, unlike with horizontal axis wind turbines ([[Wind_turbine#Horizontal_axis\|HAWT]]s), no pointing mechanism is required to allow~~ for ~~shifting wind direction and~~ the ~~turbine is self-starting~~. ~~Savonius~~ and ~~other vertical-axis machines are good at pumping water and other high torque~~, ~~low rpm applications and are not usually connected to electric power grids. They can sometimes have long [[helical]] scoops, to give smooth torque~~.

	The ~~most ubiquitous application of the Savonius wind turbine~~ is the ~~[[Flettner Ventilator]],~~ which ~~is commonly seen on the roofs of vans and buses and is used as a cooling device~~. ~~The ventilator was developed~~ by the ~~German aircraft engineer [[Anton Flettner]] in the 1920s~~. ~~It uses~~ the ~~Savonius wind turbine~~ to ~~drive an extractor fan. The vents are still manufactured in the UK by Flettner Ventilator Limited~~.<~~ref~~>[http://~~www~~.~~flettner~~.~~co.uk~~/~~home.htm Flettner]</ref>~~

	~~Small Savonius wind turbines are sometimes seen used as advertising signs where the rotation helps to draw attention to the item advertised. They sometimes feature a simple two-frame [[animation]].~~

	==~~Tethered airborne Savonius turbines~~==
	* [[Airborne wind turbines]]
	* [[Kite types]]
	* When the Savonius rotor axis is set horizontally and tethered, ~~then kiting results. There are scores of patents and products that use the net lift [[Magnus-effect]] that occurs~~ in the ~~[[Autorotation (helicopter)\|autorotation]]~~ of ~~the Savonius rotor~~. ~~The spin may be mined for some of its energy for making noise, heat, or electricity.~~

	~~==Gallery==~~
	<~~gallery~~>
	~~Image:Savonius-rotor_en.svg\|Operation of a Savonius turbine~~
	~~Image:Savonius_bladed_rotor_WEH.JPG\|A Savonius rotor bladed WECS~~
	<~~/gallery~~>

	~~==References==~~
	~~{{Reflist}}~~

	~~==External links==~~
	~~{{Commons category\|Savonius wind turbines}}~~
	* [~~http~~://~~www~~.~~re-energy.ca/wind-turbine Build your own model Savonius wind turbine]~~
	* [http://www.windside.com/ ~~Windside Savonius Type Wind Turbines for use in Extreme Environments]~~
	* [http://www.seateach.com/Forgen.asp Forgen low power Savonius Type Wind Turbines for Marine Applications]
	* [http://jason.wells.me/blog/?~~page_id~~=~~722 HelixWind Savonius Type Wind Turbine~~]
	* [http://www.~~spinpower~~.~~org Savonius turbines~~ for ~~dynamic environments www~~.~~spinpower.org]~~
	* [http://www.amics21.com/laveritat/savonius_generator_english.pdf How to ~~build a Savonius wind generator]~~
	~~{{Wind power}}~~
	* [http://www.amics21.~~com/laveritat/notions_of_wind_energy_for_the_complete_idiot.pdf Notions of Wind Energy for the Complete Idiot]~~

	~~[[Category:Vertical axis wind turbines]]~~
	~~[[Category:Finnish inventions]]~~

128.16.8.138: Fixed dead OpenCV link

2014-01-31T17:12:49Z

Fixed dead OpenCV link

← Older revision		Revision as of 19:12, 31 January 2014
Line 1:		Line 1:
			[[Image:Savonius wind turbine.jpg\|thumb\|upright\|alt=Savonius wind turbine in front of tall building\|Savonius wind turbine]]

			'''Savonius wind turbines''' are a type of [[vertical-axis wind turbine]] (VAWT), used for converting the force of the [[wind]] into [[torque]] on a rotating [[Axle\|shaft]]. The turbine consists of a number of aerofoils, usually—but not always—vertically mounted on a rotating shaft or framework, either ground stationed or tethered in [[Airborne wind turbine\| airborne systems]].

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			The Savonius wind turbine was invented by the [[Finland\|Finnish]] engineer [[Sigurd Johannes Savonius]] in 1922. However, [[Europe\|Europeans]] had been experimenting with curved blades on vertical wind turbines for many decades before this. The earliest mention is by the Italian Bishop of Czanad, who was also an engineer. He wrote in his 1616 book ''Machinae novae'' about several vertical axis wind turbines with curved or V-shaped blades. None of his or any other earlier examples reached the state of development made by Savonius. In his Finnish biography there is mention of his intention to develop a turbine-type similar to the Flettner-type, but autorotationary. He experimented with his rotor on small rowing vessels on lakes in his country. There are no results of his particular investigation known, but Magnus-Effect is confirmed by König.<ref>ISBN 3-7906-0077-6</ref>

			==Operation==
			[[Image:Savonius turbine.svg\|thumb\|left\|upright\|alt=Two-scoop Savonius turbine\|Schematic drawing of a two-scoop Savonius turbine]]

			The Savonius turbine is one of the simplest turbines. [[Aerodynamic]]ally, it is a [[Drag_(physics)\|drag]]-type device, consisting of two or three scoops. Looking down on the rotor from above, a two-scoop machine would look like an "S" shape in cross section. Because of the [[curvature]], the scoops experience less drag when moving against the wind than when moving with the wind. The differential drag causes the Savonius turbine to spin. Because they are drag-type devices, Savonius turbines extract much less of the wind's [[wind power\|power]] than other similarly-sized lift-type turbines. Much of the swept area of a Savonius rotor may be near the ground, if it has a small mount without an extended post, making the overall energy extraction less effective due to the lower wind speeds found at lower heights.
			{{-}}

			==Power and rotational speed ==

			The maximum power of a Savonius rotor is given by <math>P_{\mathrm{max}} = 0.36\, \mathrm{kg\, m^{-3}} \cdot h \cdot r \cdot v^3</math>, where <math>h</math> and <math>r</math> are the height and radius of the rotor and <math>v</math> is the wind speed.{{Citation needed\|date=March 2013}}

			The [[angular frequency]] of a rotor is given by <math>\omega = \frac{\lambda \cdot v}{r}</math>, where <math>\lambda</math> is a dimensionless factor called the tip-speed ratio. ''λ'' is characteristic of a specific windmill, and its value is typically between 0.5 and 14.{{Citation needed\|date=March 2013}} In a Savonius rotor, ''λ''≈1.

			For example, an oil-barrel sized Savonius rotor with ''h''={{val\|1\|u=m}} and ''r''={{val\|0.5\|u=m}} under a wind of ''v''={{val\|10\|u=m/s}}, will generate a maximum power of {{val\|160\|u=W}} and an angular speed of {{val\|20\|u=rad/s}} (190 revolutions per minute).

			==Use==
			[[Image:Taiwan 2009 JinGuaShi Historic Gold Mine Combined Darrieus Savonius Wind Turbines FRD 8638.jpg\|thumb\|right\|150px\|Combined Darrieus-Savonius generator in [[Taiwan]]]]

			Savonius turbines are used whenever cost or [[Reliability engineering\|reliability]] is much more important than [[Energy conversion efficiency\|efficiency]].

			Most [[anemometer]]s are Savonius turbines for this reason, as efficiency is irrelevant to the application of measuring wind speed. Much larger Savonius turbines have been used to generate [[electric]] power on deep-water [[buoy]]s, which need small amounts of power and get very little maintenance. Design is simplified because, unlike with horizontal axis wind turbines ([[Wind_turbine#Horizontal_axis\|HAWT]]s), no pointing mechanism is required to allow for shifting wind direction and the turbine is self-starting. Savonius and other vertical-axis machines are good at pumping water and other high torque, low rpm applications and are not usually connected to electric power grids. They can sometimes have long [[helical]] scoops, to give smooth torque.

			The most ubiquitous application of the Savonius wind turbine is the [[Flettner Ventilator]], which is commonly seen on the roofs of vans and buses and is used as a cooling device. The ventilator was developed by the German aircraft engineer [[Anton Flettner]] in the 1920s. It uses the Savonius wind turbine to drive an extractor fan. The vents are still manufactured in the UK by Flettner Ventilator Limited.<ref>[http://www.flettner.co.uk/home.htm Flettner]</ref>

			Small Savonius wind turbines are sometimes seen used as advertising signs where the rotation helps to draw attention to the item advertised. They sometimes feature a simple two-frame [[animation]].

			==Tethered airborne Savonius turbines==
			* [[Airborne wind turbines]]
			* [[Kite types]]
			* When the Savonius rotor axis is set horizontally and tethered, then kiting results. There are scores of patents and products that use the net lift [[Magnus-effect]] that occurs in the [[Autorotation (helicopter)\|autorotation]] of the Savonius rotor. The spin may be mined for some of its energy for making noise, heat, or electricity.

			==Gallery==
			<gallery>
			Image:Savonius-rotor_en.svg\|Operation of a Savonius turbine
			Image:Savonius_bladed_rotor_WEH.JPG\|A Savonius rotor bladed WECS
			</gallery>

			==References==
			{{Reflist}}

			==External links==
			{{Commons category\|Savonius wind turbines}}
			* [http://www.re-energy.ca/wind-turbine Build your own model Savonius wind turbine]
			* [http://www.windside.com/ Windside Savonius Type Wind Turbines for use in Extreme Environments]
			* [http://www.seateach.com/Forgen.asp Forgen low power Savonius Type Wind Turbines for Marine Applications]
			* [http://jason.wells.me/blog/?page_id=722 HelixWind Savonius Type Wind Turbine]
			* [http://www.spinpower.org Savonius turbines for dynamic environments www.spinpower.org]
			* [http://www.amics21.com/laveritat/savonius_generator_english.pdf How to build a Savonius wind generator]
			{{Wind power}}
			* [http://www.amics21.com/laveritat/notions_of_wind_energy_for_the_complete_idiot.pdf Notions of Wind Energy for the Complete Idiot]

			[[Category:Vertical axis wind turbines]]
			[[Category:Finnish inventions]]

141.211.202.239: /* Implementations */

2012-08-29T17:39:03Z

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