wiktionary umbrella An umbrella is a canopy device designed to protect from precipitation or sunlight. Umbrella or Umbrellas may also refer to Umbrella song Umbrella song , a 2007 song by Rihanna featuring Jay Z Umbrella , a 1986 song by Siouxsie and the Banshees Umbrella The Innocence Mission album Umbrella The Innocence Mission album , 1991 Umbrella Shota Shimizu album Umbrella Shota Shimizu album , 2008 Umbrella film Umbrella film , a 2007 documentary film directed by Du Haibin Umbrellas band , an indie rock band Umbrellas album Umbrellas album , self titled album by the band above Umbrella , a song by Yui from the 2007 album Can t Buy My Love Umbrella Corporation , the fictional corporation in the Resident Evil series See also The Umbrellas disambiguation As a term Umbrella term , a word that provides a superset or grouping of concepts that all fall under a single common category Umbrella company , a trading vehicle for UK freelancers contractors Umbrella organization , an association of institutions Umbrella brand , an overarching brand Umbrella fund , an investment term Umbrella school , an alternative education school disambiguation da Umbrella de Umbrella es Umbrella desambiguaci n it Umbrella he Umbrella nl Umbrella ja ru Umbrella fi Umbrella vi Umbrella ... more details
Umbrella tree can refer to several items Under the Umbrella Tree , a 1986 children s television program Magnolia tripetala , the umbrella magnolia Musanga cecropioides , the African corkwood Polyscias murrayi , an Australian rainforest tree Schefflera actinophylla , the umbrella tree or octopus tree Terminalia catappa , the Indian almond See also Umbrella Plant disambiguation Pinus pinea , the stone pine, sometimes called umbrella pine Sciadopitys verticillata , the Kusamaki, sometimes called Japanese umbrella pine disambig simple Umbrella tree ... more details
The common name Umbrella Plant can refer to several unrelated species Cyperus alternifolius Umbrella Papyrus Darmera peltata Indian Rhubarb Harper s Umbrella Plant Eriogonum longifolium var. harperi Harper s Umbrella Plant or Harper s Buckwheat Podophyllum peltatum American Mayapple Schefflera arboricola Umbrella Tree See also Umbrella Palm disambiguation Umbrella Tree disambig ... more details
Several persons are known as The Umbrella Man A Umbrella Man JFK assassination witness to the JFK assassination seen carrying an umbrella. Antonio Luis Hernandez, who was a cohort Salvador Agron , the Capeman. Neville Chamberlain , Prime Minister of the United Kingdom from 1937 to 1940, nicknamed Umbrella Man because he often carried an umbrella in public and was invariably depicted with it in cartoons sometimes even drawn as an umbrella. Robert W. Patten , an eccentric figure in Seattle s history, and also the cartoon figure modeled after him. Also A song, Umbrella Man recorded by the Partridge Family . A song, The Umbrella Man by Flanagan and Allen . Roald Dahl story collection The Umbrella Man and Other Stories . William Matthew Scott Will Scott story The Umbrella Man , filmed in 1937 as London by Night disambiguation ... more details
A fire umbrella is a fire dancing tool. It is made from an umbrella with the rainproof cover removed. Kevlar wicks are attached to the ends of the umbrella, soaked in a fuel, and then lit on fire. Although this fire art is rare, it is quite beautiful to watch. The dancer can manipulate the fire umbrella around her or his body, usually twirling it to give the illusion of a spinning ring of fire. DEFAULTSORT Fire Umbrella Category Fire arts ref Fire umbrella performance example on http www.youtube.com watch?v WPQ5FDO Sxs YouTube ref Notes reflist ... more details
An umbrella defense is a formation used in field sports Rugby league gameplay Preventing line breaks Rugby league Formation American football American football See also Umbrella disambig ... more details
File Robert W. Patten The Umbrella Man .png thumb right One of the earliest promoters of umbrella hats, Robert W. Patten , known as the Umbrella Man in Seattle, Washington and San Jose, California. An umbrella hat is an umbrella canopy attached to a headband that functions as a protection against the rain or sun. It is seen as a novelty item. Description Umbrella hats have a typical umbrella canopy, with ribs supporting fabric or plastic covering. This canopy is connected to a headband via a short shaft in the center to keep the canopy over the head. The canopy is generally collapsable, with the ribs and fabric collapsing around the center shaft, much like a typical umbrella . ref name patent http www.google.com patents?hl en&lr &vid USPAT4760610&id NLYwAAAAEBAJ&oi fnd&dq umbrella hat&printsec abstract v onepage&q&f false 1987 U.S. Patent Patent number 4760610, Patent by Bing T. Wu for Umbrella Hat. ref Umbrella hats can come in a wide array of colors, and sizes. History In December 1880, there was a patent taken out on the umbrella hat, patent 250,803. ref name patent Robert W. Patten claimed that he invented the umbrella hat while he was prospecting in Mexico. His original hat also included a mosquito net attached to the canopy. Patten moved to Seattle in the 1890s and was dubbed the Umbrella Man . He then became a repairman for umbrellas, and inspired a cartoon from John Hager cartoonist John Hager , depicting Robert Patten with his umbrella hat. ref http www.historylink.org index.cfm?DisplayPage output.cfm&File Id 3149 History Link. Patten, Robert W. 1832 1913 , Seattle s famed Umbrella Man. HistoryLink.org Essay 3149 ref Patten was seen as eccentric, and Hager s cartoons of him were comic. Today, the umbrella hat is oftentimes associated as a cheap and comical novelty item, but can be used to shield against rain or shine. References reflist Paul Dorpat, Now and Then The Umbrella ... 2010 09 dudes wearing umbrella hats.html Blog showing modern umbrella hats ... more details
For the film see, The Blue Umbrella film . Italic title The Blue Umbrella is a children s novel written by Ruskin Bond . The story is set in a small village of Himachal Pradesh , where a little girl, Binya, trades her leopard claw necklace for a pretty, frilly blue umbrella. In a village where the richest man is the shopkeeper who keeps an old ruined shop and sells warm Coca Cola bottles due to no refrigerator, an umbrella is a precious thing to have. The people in the village become very fond of her and her umbrella. Soon the shopkeeper becomes envious of the umbrella and employs a boy to steal it. One day the girl finds her umbrella missing. Soon after the shopkeeper gets a similar umbrella in red. With this, the centre of attraction shifts from Binya to the shopkeeper. His celebrity status does not last very long as the villagers discover the umbrella is the stolen umbrella, only it had been dyed red. As a result the shopkeeper s name is tarnished in the village. The story concludes with the girl giving the umbrella to the shopkeeper and, in return, the shopkeeper gives the little girl a bear claw on a silver chain. This story appeared in Bond s collection of short stories, Children s Omnibus . DEFAULTSORT Blue Umbrella Category Indian books Category Novels adapted into films ... more details
Umbrella Palm can refer to Hedyscepe canterburyana , a palm tree in the family Arecaceae Cyperus alternifolius , a sedge in the family Cyperaceae disambig ... more details
unreferenced date February 2008 An umbrella school is an alternative education school which serves to oversee the homeschooling of children to fulfil government education educational requirements. Umbrella schools vary greatly in what they offer and cost. Some offer group classes, a defined curriculum , sports , field trip s, standardized test ing, and more. Others exist only to collect the minimal legal requirements, allowing parents to choose their curriculum and methods of teaching, as well as freedom from an annual evaluation or testing requirements. Additionally, some umbrella schools follow a specific faith, while others are secular . In the United States, the responsibilities of umbrella schools vary from state to state. Many states require schools to collect immunization and attendance records, and similar records as required for any publicly run school. Often umbrella schools operate under the same legal guidelines as independent school s. Some states have course and daily time requirements. In others, students are bound to the normal standard school year and records must be kept to prove that students fulfil the required amount of time. Other umbrella terms Umbrella term Umbrella fund Umbrella organization Umbrella brand Category Alternative education edu stub ja ... more details
An umbrella fund is an investment term used to describe a collective investment scheme which is a single legal entity but has several distinct sub funds which in effect are traded as individual investment fund s. This type of arrangement originated in the European investment management industry, most notably with the SICAV an open ended collective investment . The SICAV model was copied for the UK OEIC and offshore fund models. Advantages The umbrella fund structure makes it cheaper for investors to move from one sub fund to another and save the investment manager costs relating to regulatory duplication. See also Collective investment scheme s Investment management SICAV OEIC Mutual fund s Other umbrella terms Umbrella brand Umbrella term Umbrella organization Umbrella school References reflist unreferenced date September 2007 Navigation box br Investment management Category Financial services Category Investment Category Funds pl Fundusz parasolowy ... more details
refimprove date February 2008 For the fictional company set in the Resident Evil videogame series, see Umbrella Corporation . An umbrella organization is an association of often related, industry specific institutions, who work together formally to coordinate activities or pool resources. In business, political, or other environments, one group, the umbrella organization, provides resources and often an identity to the smaller organizations. Sometimes in this kind of arrangement, the umbrella organization is to some degree responsible for the groups under its care. Compare to franchising franchises and subsidiary subsidiaries . There may be many reasons for establishing joining an umbrella organization The ability to carry out activities which could not be accomplished alone, due to Economies of scale A better pool of experts and experience Shared apprenticeship and exchange of know how A sense of community and support that makes people and corporations derive utility from multilateral and shared activities An increased brand public awareness. Legality of pursued action s . Example organizations ACTIVE AFL CIO and other national trade union center s Canadian Hockey League CIA DD172 Department of Public Safety European Music Council Fox Network Federation of Student Islamic Societies Girls on the Run Girls on the Run International Independent Sector IFOAM International Federation of Organic Agriculture Movements The former KGB Mujahedeen Shura Council National Retail Federation National Wrestling Alliance OSGeo Public Health Training Network ref http www.cdc.gov phtn overview.htm cdc.gov ref Software in the Public Interest Transport for London Ulster Defence Association United Jewish Communities VIATeC Victoria Advanced Technology Council , Greater Victoria , British Columbia Yamaguchi gumi See also Supraorganization Umbrella brand Umbrella fund Umbrella school Umbrella term Umbrella Media Umbrella Worldwide Corporation References Reflist Category Supraorganizations ... more details
Unreferenced stub auto yes date December 2009 Orphan date February 2009 A golden umbrella is a clause in an entrepreneur s contract with their Company law company , typically the Chief executive officer CEO or Chief operating officer COO , that guarantees a certain payout for the risk they bear in starting the company. The down side of a golden umbrella is that angel investor s typically do not know the terms of a golden umbrella, thus a CEO may start a company, grow the company, seek first round and second round venture capital , and then exit the company with a large pay out just before the company s market growth takes a downturn due to poor business planning. See also Golden handshake Golden parachute DEFAULTSORT Golden Umbrella Category Business terms Business term stub ... more details
Taxobox image image width image caption regnum Animal ia phylum Arthropod a classis Insect a ordo Lepidoptera familia Pyralidae genus Lipographis ref name Pyraloidea db cite web url http globiz.pyraloidea.org Pages Reports TaxonReport.aspx title World Pyraloidea Database publisher Globiz.pyraloidea.org date accessdate 2011 09 29 ref species L. umbrella binomial Lipographis umbrella binomial authority Harrison Gray Dyar, Jr. Dyar , 1908 synonyms Sarata umbrella small Dyar, 1908 small Lipographis umbrella is a species of Pyralidae snout moths in the genus Lipographis . It was described by Dyar in 1908, and is known from California , United States U.S.A. . ref http mothphotographersgroup.msstate.edu species.php?hodges 5889 mothphotographersgroup ref References reflist Category Animals described in 1908 Category Phycitinae Pyralidae stub ... more details
unreferenced date February 2008 Merge from Family branding discuss Talk Family branding Merger proposal date December 2010 An umbrella brand is an overarching brand used across multiple related products. Umbrella branding is also known as family branding . It contrasts with Individual branding individual product branding , in which each product in a portfolio is given a unique brand name and identity. There are often economies of scope associated with umbrella branding since multiple products can be efficiently promoted with a single advertisement or campaign. Umbrella branding facilitates new product introductions by providing a familiar brand name, which can lead to trial purchase, product acceptance, or other advantages. Umbrella branding may impose on the brand owner a greater burden to maintain consistent quality. If the quality of one product in the brand family is compromised, it could impact on the reputation of all the others. For this reason umbrella branding is generally limited to product lines that consist of products of similar quality. A good example is AMUL Amul Butter, Amul Cheese, Amul Milk, Amul Icecream, Amul Chocolates etc See also Family branding Individual branding Umbrella organization Category Brand management econ stub de Dachmarke ru ... more details
Umbrella Music is a collective of jazz and Free improvisation improvisational musicians in Chicago , Illinois. Stating that their goal is to pool resources in order to reach a larger audience for the music, and to provide better performance situations for artists, ref http umbrellamusic.org about.html , About Umbrella Music. ref the group puts on three weekly concert series and an annual improvisational festival. Last year s Umbrella Music festival was called Chicago s second most impressive and adventurous jazz festival of the year and featured European musicians together with Chicagoans such as John Herndon and Ken Vandermark . ref http www.chicagoreader.com chicago fall arts guide 2009 best bets umbrella music festival Content?oid 1185233 Chicago Reader Fall Arts Guide 2009 Best Bets Umbrella Music Festival. Margasak, Peter. ref In 2009 the website allaboutjazz.com wrote that If jazz is to survive in a modern world without the support of major labels or corporate funding, it will be through the efforts of organizations like Umbrella Music. ref http www.allaboutjazz.com php article.php?id 35088 Umbrella Music Festival 2009. allaboutjazz.com. Henkin, Andrey. ref Notes reflist Category American jazz ensembles ... more details
Umbrella insurance refers to a Liability insurance liability insurance policy that protects the assets and future income of the name insured in addition to his or her primary policies. It is distinguished from excess insurance in that excess coverage goes into effect only when all underlying policies are totally exhausted, while umbrella is able to drop down to fill coverage gaps in underlying policies. ref Powerine Oil Co., Inc. v. Superior Court , 37 Cal. 4th 377 2005 . ref Therefore, an umbrella policy can become the primary policy on the risk in certain situations. The term umbrella refers to how the policy shields the insured s assets more broadly than primary coverage. ref cite web url http coverhound.com insurance learning center what is umbrella insurance and do you need it title What is Umbrella Insurance, and Do You Need It? date Jan 2011 publisher CoverHound ref Typically, an umbrella policy is pure liability coverage over and above the coverage afforded by the regular policy, and is sold in increments of one million dollars. The term umbrella is used because it covers liability claims from all policies underneath it, such as vehicle insurance auto insurance and home insurance homeowners insurance policies. For example, if the insured carries an auto insurance policy with liability limits of 500,000 and a homeowners insurance policy with a limit of 300,000, then with a million dollar umbrella, the insured s limits become in effect, 1,500,000 on an auto liability claim and 1,300,000 on a homeowners liability claim. Umbrella insurance provides broad insurance beyond traditional home and auto. It provides additional liability coverage above the limits of homeowner s, auto, and boat insurance policies. It can also provide coverage for claims that may be excluded by the primary policies. These may include, but are not limited to False arrest Libel Slander Invasion of privacy Citations references Category Insurance business stub ja ... more details
image Whitney unbrella.png right frame 240px Section of the surface In mathematics , the Whitney umbrella or Whitney s umbrella is a self intersecting surface placed in dimension three dimensions . It is the union of all straight lines that pass through points of a fixed parabola and are perpendicular to a fixed straight line, parallel to the axis of the parabola and lying on its bisection perpendicular bisecting plane . Formulas Whitney s umbrella can be given by the parametric equation s in Cartesian coordinates math begin align x u,v & uv y u,v & u z u,v & v 2 end align math where the parameters u and v range over the real number s. It is also given by the implicit function implicit equation math x 2 y 2z math This formula also includes the negative z axis which is called the handle of the umbrella . Properties Image Whitney umbrella.gif right thumb 5400px Whitney umbrella as a ruled surface, generated by a moving straight line. Image Whitney umbrella.jpg right thumb 250px Whitney umbrella made with a single string inside a plastic cube. Whitney s umbrella is a ruled surface and a right conoid . It is important in the field of singularity theory , as a simple Local property local model of a pinch point mathematics pinch point mathematical singularity singularity . The pinch point and the fold catastrophe fold singularity are the only stable singularity stable local singularities of maps from R sup 2 sup to R sup 3 sup . It is named after the United States American mathematician Hassler Whitney . See also cross cap Right conoid Ruled surface References cite web author year url http www.geom.uiuc.edu zoo features whitney title Whitney s Umbrella format work The Topological Zoo publisher http www.geom.uiuc.edu The Geometry Center accessdate 2006 03 08 accessyear Images and movies of the Whitney umbrella. Category Differential topology Category Singularity theory Category Surfaces eo Ombrelo de Whitney fr Parapluie de Whitney it Ombrello di Whitney ru sl ... more details
nofootnotes date July 2010 refimprove date July 2010 wiktionary umbrella term An umbrella term is a word that provides a subset superset or grouping of concept s that all fall under a single common category. Umbrella term is also called a hypernym . For example, cryptology is an umbrella term that encompasses cryptography and cryptanalysis , among other fields. Similarly, an umbrella organization is a central and coordinating body representing a number of smaller, separate bodies. The closely related blanket term is a Morpheme word or phrase that is used to describe multiple groups of related things. The degree of relation may vary, even have a minimal relationship, but blanket terms often trade specificity for ease of use in other words, a blanket term by itself gives little detail about the things that it describes or the relationships between them, but is easy to say and remember. Blanket terms may originate as slang , and eventually become integrated into the general vocabulary. Examples of umbrella terms In archaeology and anthropology Grave goods Venus figurines They extend over diverse time periods. Votive deposit They are essentially in every human culture tribe . Standing stone In earth science Punctuated equilibrium was coined in 1972 in the category of evolution , or speciation , etc., but could obviously be applied to other topics . Punctuated equilibrium is different from gradualism . Other Straw man two dictionary definitions Psychokinesis numerous alleged psychic force abilities described under this term Psychosis describes nine distinct diagnoses Daltonism umbrella for various color blindness problems Intellectual property umbrella for certain exclusive rights ... pop music , black ballad s, hip hop , funk , Motown Other umbrella terms Umbrella brand Umbrella fund Umbrella organization Umbrella school See also Collective noun Generic antecedents Family resemblance ... de Oberbegriff es T rmino global ru simple Umbrella term ckb uk ... more details
File Cocktails mit Schirmchen.jpg thumb right 220px Cocktail s with umbrella Image Cocktail umbrella side.jpg thumb Observe the pink retaining ring under the white collar connecting to the ribs. A cocktail umbrella is a small umbrella or parasol made from paper , paperboard , and a toothpick , used as a cocktail garnish garnish or decoration in cocktail s, dessert s or other food and beverages. The umbrella is fashioned out of paper, which can be patterned, with cardboard ribs. The ribs are made from cardboard in order to provide flexibility and to hinge so the umbrella can be pulled shut much like an ordinary umbrella. A small plastic retaining ring is often fashioned against the stem, a toothpick, in order to prevent the umbrella from folding up spontaneously. Also note that there is a sleeve of folded newspaper under the collar to act as a spacer. This newspaper is usually Japan ese, Chinese language Chinese or India n hinting at the umbrella s origin. citation needed date November 2011 The cocktail umbrella is believed to have arrived on the bar scene as early as 1932 courtesy of Victor Bergeron of Trader Vic s in San Francisco although it is, by Vic s own admission, a presentation picked up from Don the Beachcomber now closed . Upon introduction, umbrellas were considered very exotic as were most things from the Pacific Rim . See also Cocktail Cocktail stick Quararibea turbinata Swizzlestick Tree Tiki mugs External links cite news url http www.handmade.com.au extras webex umbrellas.php archiveurl http web.archive.org web 20080720031813 http www.handmade.com.au extras webex umbrellas.php archivedate 2008 07 20 date 2007 02 15 publisher Handmade magazine title DIY How to make ... umbrella and why date 2000 11 17 publisher The Straight Dope title Who invented the cocktail umbrella and why? cite news url http www.metroactive.com papers metro 06.17.99 cover b&c umbrella 9924.html date 1999 06 17 publisher Glorious Shades title A long overdue tribute to the cocktail umbrella ... more details
Notability date September 2010 Primary sources date September 2010 Dance Umbrella is an annual festival ... choreographers , Dance Umbrella now ranks highly Peacock term date September 2010 among Europe s leading international dance festivals. In January 2007, Betsy Gregory took over as Dance Umbrella s Artistic ... date October 2011 Dance Umbrella br produces an annual London festival br Commission art commissions .... Since 2007, Dance Umbrella has been staging performances outside of the theatre in spaces such as The Bathstore, Smithfield Market , Clifford Chance and various parks around London. Dance Umbrella ... under the Umbrella . Recent touring companies have included Merce Cunningham Dance Company US , Mark ... laundry section date September 2010 1978 br First London Dance Umbrella festival at Riverside Studios and the Institute of Contemporary Arts ICA 1980 br Second Dance Umbrella festival, thereafter established ... 1983 br First presentation of Trisha Brown Company at Riverside Studios 1984 br First Dance Umbrella ... Company br First presentation of Mark Morris and Dancers at The Place 1985 br Dance Umbrella s artistic ... br First presentation of Stephen Petronio & Dancers at The Place Theatre 1987 br Dance Umbrella s co ... of the Year in Dance 1988 br Dance Umbrella s 10th anniversary festival sponsored by Beck s Brewery Becks Bier br Dance Umbrella s Artistic Director, Val Bourne, wins Excellence in International ... Awards to mark Dance Umbrella s 10th and Time Out company Time Out s 20th anniversary br ... Festival br Dance Umbrella s Artistic Director, Val Bourne wins Digital Premiere Award & Dance Umbrella wins Digital Dance Award br First Dance Umbrella co presentation of Merce Cunningham Dance Company ... First Dance Umbrella festival performances at Queen Elizabeth Hall Groupe Emile Dubois in Mammame 1990 br Dance Umbrella wins Time Out company Time Out London Dance Award & Prudential Award for Dance ... Umbrella Time Out company Time Out Gala at Sadler s Wells featuring London Dance and Performance ... more details
Infobox single Name Umbrella Beach Cover Umbrella beach.jpg Artist Owl City from Album Ocean Eyes Released May 17, 2010 U.K. Format Music download Digital download Recorded 2007 2008 Genre Synthpop , Eurodisco Length 3 50 small Album Version small br 3 23 small Radio Edit small Label Universal Republic Producer Adam Young Writer Adam Young Last single Vanilla Twilight br 2010 This single Umbrella Beach br 2010 Next single Alligator Sky br 2011 External music video YouTube yRpkRf99tz0 Umbrella Beach Audiosample Upper caption Audio sample Audio file OwlCityUmbrellaBeach.ogg Umbrella Beach is a song by Owl City . The song was released as the third single from his second album Ocean Eyes . It is the second UK single from the album as it was decided not to release Vanilla Twilight in Europe and had a May 16, 2010, release date in the US, and was released May 17, 2010, in the UK. The album cover is a picture of the beach at Santa Monica, California , taken from the Santa Monica Pier . Meaning Lyrically, Adam Young Young stated that the song is about ... a hermit living in a box car on the edge of the shoreline that corroded so badly, it wound up at the bottom of the bay. Rather than finding .... Umbrella Beach Radio Edit 3 23 1. Umbrella Beach Long Lost Sun Remix 3 25 Music video The music video for Umbrella Beach premiered on April 16, 2010, on YouTube . The video tells about a boy who is trying ... Hit Wonders of The Teenies countdown. p Thankfully, with its Ibiza ready beats. Umbrella Beach is more .... rating 4 5 . ref cite web url http www.digitalspy.co.uk music singlesreviews a220481 owl city umbrella beach.html work Digital Spy publisher digitalspy.co.uk author Robert Copsey title Owl City Umbrella Beach ref blockquote Chart performance Umbrella Beach entered the UK Dance Chart on the chart ... UKdance 12 song Umbrella Beach artist Owl City date 2010 05 29 References references Owl City ... lv Umbrella Beach nl Umbrella Beach vi Umbrella Beach ... more details
unreferenced date December 2008 An umbrella antenna is a top loaded electrical lengthening electrically lengthened monopole antenna , consisting in most cases of a mast radiator mast fed at the ground end, to which six or more wires are connected at the top, sloping downwards. The outer end of each wire is terminated by an insulator, usually placed at about one third the total height to isolate the lower support wire or rope which is anchored to the ground. The radial wires can also function as guy wire s to support the mast. The radial wires make the antenna look like a giant umbrella without the cloth, accounting for the name. They are used as transmitting antennas at frequencies below 1.6 MHz, particularly in the Low frequency LF and Very low frequency VLF bands, at frequencies sufficiently low that it is impractical to build a full size quarter wave monopole antenna. Typical mast heights are less than 1 40 wavelength to 1 10 wavelength depending on the requirement. The function of the added umbrella wires is to add capacitance to the top of the antenna, improving the current distribution on the vertical mast to increase the radiation resistance , and making the antenna resonant at lengths of less than a quarter wavelength . Umbrella antennas with heights of 15 to 350 metres are in service. Umbrella antennae up to 428 metres in height were used for the OMEGA Navigation System , but have since been demolished after the system was shut down in 1997. Umbrella antennas radiate ... by the transmitter . Umbrella antennas are used as single mast antennas and are in common use for commercial ... umbrella antennas 350 metres high are in use in an array at the German VLF communications facility ... with spark gap transmitter s on longwave bands to transmit information by Morse code . Small umbrella ... to build an umbrella antenna with a grounded tower. Such an antenna requires a separate feeder to the umbrella ... hawkins.com nss goliath.jpg Picture of an umbrella antenna telecomm stub Antenna Types Category Radio ... more details
Nuclear umbrella refers to a guarantee by a nuclear weapons state to defend a non nuclear allied state. It is usually used for the security alliance s of the United States with Japan ref cite web url http nautilus.org archives nukepolicy Nuclear Umbrella index.html title Japan Under the US Nuclear Umbrella ... nukepolicy Nuclear Umbrella index.html Bot retrieved archive archivedate 2008 04 22 ref , South Korea ref cite web url http www.nukestrat.com korea umbrella.htm title The US Nuclear Umbrella Over South ... www.bits.de public researchnote rn97 2.htm title Extending the Nuclear Umbrella Undermining the Nuclear ... free zone was proclaimed, the U.S. no longer considered the country to be under its nuclear umbrella. US umbrella over others American nuclear umbrella usually refers to the formal alliances above, but is occasionally ... extension of the US nuclear umbrella over Israel and other American allies in the Middle East . One article seems to consider Saudi Arabia to be already under the US nuclear umbrella ref cite news url ... and one book states that India was given protection under the US nuclear umbrella after the Sino Indian ... umbrella 22&source web&ots bF3UXuqhFJ&sig UY1w5c2DLuXRu3TBg184dAtetcA&hl en&sa X&oi book result&resnum 20&ct result ref Russian nuclear umbrella The term is far less used for Russian nuclear guarantees ...?id iELgaxLgxmIC&pg PA123&lpg PA123&dq 22russian nuclear umbrella 22&source web&ots ymwcmJKIKg&sig d9cVMekwnlhoWcJ ... an umbrella of another kind against nuclear attack. This is not the conventional usage of nuclear umbrella , but a rhetorical device promoting active defense over the nuclear deterrence the conventional nuclear umbrella depends upon. ref cite web url http www.informationclearinghouse.info article15284.htm title Nuclear Umbrella? The Peril of Missile Defense author William A. Cohn publisher Information ... Press Commentary ed100304a.cfm title Finally, U.S. Gets a Nuclear Umbrella author Baker Spring publisher ... reflist DEFAULTSORT Nuclear Umbrella Category Cold War Category Cold War treaties Category Foreign ... more details
Umbrella species are species selected for making wildlife conservation conservation related decisions, typically because protecting these species indirectly protects the many other species that make up ... of selected keystone species , flagship species or umbrella species makes conservation decisions easier. Umbrella species can be used to help select the locations of potential reserves ... of the Umbrella Species Concept as a Conservation Tool. Conservation Biology , Vol. 18, No. 1, 76 85 ... and Kenji Fukuyama. 2006. A Mechanistic Approach to Evaluation of Umbrella Species as Conservation ... of umbrella species automatically extends protection to other species. i.e. spotted owl and old growth trees ref Wilmers, Christopher. 2007. Lecture April 11, 2007. ref B Traditional umbrella ... Launer, Alan E. and Dennis D. Murphy. 1994. Umbrella Species and the Conservation of Habitat Fragments ... , Vol. 69, No. 2, 145 153. ref Use in landuse management The use of umbrella species as a conservation ... Miller, Smithsonian Institution Press, pp. 18 30. ref who defined an umbrella species as one whose ... found that the umbrella effect provides a simpler way to manage ecological communities. Others feel ... than just using umbrella species alone. Individual invertebrate species can be good umbrella species because they can protect older, unique ecosystems. There have been cases where umbrella species ... umbrella species to protect habitat of specific species as well as other organisms in the area. Dunk ... serve as a reasonable coarse filter umbrella species for the taxa they evaluated, which were the mollusks ... name launer1994 tried to determine whether this butterfly could be considered an umbrella species in protecting ... Using the ESA to protect termed umbrella species and their habitats can be controversial because ... . Examples of umbrella species Northern spotted owl s and old growth forest ex. Molluscs and salamanders ... its habitat and other species within it. See also colbegin 2 Umbrella effect Key stone species ... more details
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