Infobox software name PLECS logo Image PLECS icon.png 64px screenshot Image PLECS20.png 220px caption PLECS 2.0 under Mac OS X 10.5.0 developer Plexim released 2002 frequently updated yes Release version update? Don t edit this page, just click on the version number programming language operating system Mac OS X , Microsoft Windows Windows , Linux platform Simulink language English language English , Japanese language Japanese genre Simulation software license Proprietary software Proprietary website http www.plexim.com product PLECSPLECS Piecewise linear function Piecewise Linear Electronic circuit simulation Electrical Circuit Simulation is a Simulink toolbox for system level simulations of electrical circuit s developed by Plexim ref Allmeling 1999. ref . It is especially designed for power electronics but can be used for any electrical network . Integration with MATLAB Simulink or Standalone The program Simulink is ideally suited for the simulation of controls. Therefore, Simulink is also a convenient tool for the design of closed loop controlled electrical systems. PLECS enhances Simulink with the capability to simulate electrical circuit s directly. The user can simply enter a circuit as a Circuit diagram schematic of electrical components. At Simulink block level the circuit ... version There is also a Standalone software standalone version of PLECS that allows simulation of electrical circuit s and Control theory control control system system s directly within the PLECS ... between a closed and an open circuit. This approach, which is implemented in PLECS, has two major advantages ... PLECS piece wise linear electrical circuit simulation for Simulink journal Proceedings of the IEEE 1999 ... Teodorescu first4 A. title PV inverter simulation using MATLAB Simulink graphical environment and PLECS ... id accessdate 12 07 2010 div External links http www.plexim.com The PLECS product page DEFAULTSORT Plecs Category Simulation software Category Power electronics ja PLECS ... more details
Armoured catfish may refer to any of the following Loricariidae family The armoured suckermouth catfish, also known as suckermouth catfish, armoured catfish or simply plecs Callichthyidae family Armoured catfish. Includes the genera Corydoras sometimes referred to as armoured catfish Callichthys known as the Armoured catfish Callichthys callichthys a species popular in the aquarium trade, common name The Armoured catfish The Thorny catfishes Doradidae are also sometimes referred to as Armoured catfish. Disambig Category Armored catfishes Category Fish common names ... more details
Taxobox name Blue eyed plec regnum Animal ia phylum Chordate Chordata classis Actinopterygii ordo Siluriformes familia Loricariidae genus Panaque species P. cochliodon binomial Panaque cochliodon binomial authority Franz Steindachner Steindachner , 1879 The blue eyed plec , Panaque cochliodon , is a herbivorous freshwater armored catfish from South America. It is closely related to the popular plecostomus catfish kept in many aquarium aquaria as an algae eater, but is immediately distinguished by being dark grey to black and having bright, turquoise coloured eyes. Like other species of the Panaque genus, P. cochliodon feeds primarily on submerged wood http www.towson.edu nelson Panaque manaus.html . Blue eyed plecs grow to about 30 cm in length, and like other Panaque spp., they are clumsy swimmers adapted to staying close the substrate, in particular using the sucker like mouth to hold onto submerged rocks and wood. Blue eye plecs as aquarium fish Blue eyed plecs have been kept as aquarium fish, and were fairly popular during the 1980s and early 1990s. However, they are now very rarely traded because wild fish can only be obtained from rivers in Colombia considered to be outside the control of the Colombian government. http www.planetcatfish.com faq index.php?qid 52 As with other Panaque , these fish are generally hardy and easy to keep, although parasitic, Rickettsia like bacteria can be a problem http www.cdc.gov ncidod eid vol3no2 fryer.htm , particularly when newly imported. These fish enjoy a mixed diet of algae, raw vegetables such as courgette , and wood, much like the more widely kept Panaque nigrolineatus . A protein rich diet should be avoided, as it will result in damages to their internal organs, especially the liver. Many aquarium books list this fish as Panaque suttoni , most likely due to misidentification with Panaque suttonorum . References ITIS id 680300 taxon Panaque cochliodon accessdate 19 March 2006 FishBase species genus Panaque species cochl ... more details
Unreferenced date December 2009 Orphan date December 2009 Fierce Panda Records is especially well known for the compilation album s and EPs. These are traditionally named after a pun, and are usually deleted on the day of release. A list of these and some of the most famous bands featured is below. List of Fierce Panda Compilations Albums Nings Of Desire includes Gorky s Zygotic Mynci , The Bluetones , China Drum Dial M For Merthyr includes Manic Street Preachers , Stereophonics Nings And Roundabouts Includes Placebo band Placebo , Kenickie , 3 colours red 3 Colours Red , Where The Wild Nings Are includes Embrace British band Embrace , Lo Fidelity Allstars The Dead Cheap Sampler includes Seafood band Seafood , Coldplay , Astronaut band Astronaut , Hundred Reasons Mosh & Go includes Jimmy Eat World , Hundred Reasons Live The Dream includes Death Cab for Cutie , Astronaut band Astronaut , Seafood band Seafood , The Music band The Music , Easyworld Decade Ten Years of Fierce Panda Includes all the best known Fierce Panda artists Things that I Discover 1999 Tiny Too Elin Grimstad, Hilde Stephanson, Isobel Jones NB Catalogue Numbers of singles released on Fierce Panda begin with the characters ning resulting in the titles of many of the above items being in joke puns . EPs Shagging In The Streets Crazed And Confused Return To Splendor From Greer To Eternity Built To Blast Suzi Quatro Lives In Chelmsford EP Mortal Wombat Songs About Plucking The Joy Of Plecs Screecher Comforts Pandamonium 1 4 The Panda In A Big Vanda Tour 98 Dope Is Important Listen With Smother Bless His Little Cotton Rocks Cry Me A Liver Otter Than July Clooney Tunes Cheffing & Blinding Vet Sounds Dark Side Of The Raccoon Cutting Hedge The Squirrel EP Spring Tour 2003 Mosh Shock & Oar On The Buzzes Glowing Underground Zip It Up Licensed to Drill See also Fierce Panda Records List of bands signed to Fierce Panda Records DEFAULTSORT Fierce Panda Records Compilations Category Record label compilation album ... more details
Unreferenced date December 2006 expert subject electronics date June 2010 Methods To design any electrical circuit, either Analogue electronics analog or Digital circuit digital , Electrical engineering electrical engineers need to be able to predict the voltages and currents at all places within the circuit. Linear circuit s, that is, circuits with the same input and output frequency, can be analyzed by hand using Complex number complex number theory . Other circuits can only be analyzed with specialized software programs. Circuit simulation software such as VHDL allows engineers to design circuits without the time, cost and risk of error involved in building circuit prototypes. Network simulation software More complex circuits must be analyzed with circuit simulation software such as SPICE and EMTP . Linearization around operating point When faced with a new circuit, the software first tries to find a Steady state steady state solution , that is, one where all nodes conform to Kirchhoff s Current Law and the voltages across and through each element of the circuit conform to the voltage current equations governing that element. Once the steady state solution is found, the operating points of each element in the circuit are known. For a small signal analysis, every non linear element can be linearized around its operation point to obtain the small signal estimate of the voltages and currents. This is an application of Ohm s Law. The resulting linear circuit matrix can be solved with Gaussian elimination . Piece wise linear approximation Software such as the PLECS interface to Simulink uses piecewise linear approximation of the equations governing the elements of a circuit. The circuit is treated as a completely linear network of Diode Shockley diode equation ideal diode s. Every time a diode switches from on to off or vice versa, the configuration of the linear network changes. Adding more detail to the approximation of equations increases the accuracy of the simula ... more details
and beauty when compared with the common plecs, Hypostomus spp. widely sold to aquarists as algae eaters. Royal plecs have a greyish green background colour against which are set thick, dark bluish ... plecs typically grow to around 30 cm in length. ref name planetcatfish cite web url http www.planetcatfish.com ... a quite different fish that only comes from Venezuela. Blue eyed plecs reach a similar size to royal plecs, but because many specimens are infected with a bacterium closely related to Rickettsia , mortality ... plecs. All Panaque catfish require much the same thing in captivity. Their main demand is for a mixed ... by other Plecostomus plecs are not required. Because they are relatively large for aquarium fish ... more details
Taxobox name Panaque image Akwa02 panaque nigrolineatus.jpg image width 240px image caption Panaque sp. cf. nigrolineatus in an aquarium regnum Animal ia phylum Chordate Chordata classis Actinopterygii ordo Siluriformes familia Loricariidae genus Panaque species P. nigrolineatus binomial Panaque nigrolineatus binomial authority Wilhelm Peters Peters , 1877 synonyms Chaetostomus nigrolineatus br small Peters, 1877 small The royal plec , royal pleco , or royal panaque , Panaque nigrolineatus , is a herbivorous freshwater catfish from South America known for being one of the few fish that digest wood. ref name Fishbase FishBase species genus Panaque species nigrolineatus month Apr year 2007 ref It is the type species of its genus and a member of the Loricariidae . In its native habitat this fish is eaten as food. fact date April 2007 This fish is also a popular aquarium fish. Anatomy and appearance Image panaque teeth.jpg thumb left Mouth and teeth of Panaque nigrolineatus The royal plec is closely related to the popular plecostomus catfish kept in many aquaria as an algae eater. While the royal plec also eats algae, it is best known among biologists as being among the very few fish capable of eating and digesting wood . It does so using symbiotic gut bacteria . Royal plecs are light grey in colour patterned with dark grey squiggles. They have red eyes and the dorsal fins are edged with cream or gold. The body is encased in heavy armour, except for the belly, which is soft. This armour is made of strong plates of skin, not scales. Royal plecs can grow to 43 centimetres 17 in in length. Because they are heavy and inflexible, they do not swim well, but they do have a strong sucker like mouth that enables them to hold onto rocks and wood in fast flowing waters. Distribution and habitat The royal plec can be found in the Orinoco River as well as a number of tributaries of the Amazon River . ref name Fishbase Varieties There are several undescribed varieties of Panaque that ... more details
DISPLAYTITLE Pterygoplichthys gibbiceps Taxobox image Sailfin pleco.jpg image widthy 250px name Pterygoplichthys gibbiceps regnum Animalia phylum Chordata classis Actinopterygii ordo Siluriformes familia Loricariidae genus Pterygoplichthys species P. gibbiceps binomial Pterygoplichthys gibbiceps binomial authority Kner 1854 Pterygoplichthys gibbiceps ref name fishbase FishBase species genus glyptoperichthys species gibbiceps year 2006 month 03 ref is a species of freshwater fish of the genus Pterygoplichthys of the family Loricariidae of order Siluriformes . This species is found throughout river basins in the Amazon Basin Amazon region of South America . P. gibbiceps shows all the characteristic features of its genus a large dorsal fin with more than nine rays, prominent nasal flares and a prominent hump or crest anterior to the dorsal fin as well as a substantial base to the dorsal fin. Adult fish easily attain 20 cm in length and can live for more than 20 years. A typical plec shape is shown, patternation consists of primarily irregular largish brown spots on a yellowish backgroung giving a honeycombed like appearance, additional pattern features common to related species may be visible on close inspection. As this fish grows the spots get smaller. Like most plecs this species is primarily vegetarian though will eat dead animals. In the wild these fish are found in shoals in sluggish rivers of the Amazon River Amazon and Orinoco river systems, they also occupy flooded land during the wet season. During the dry season P. gibbiceps will aestivate in burrows around 1 metre long dug into mud banks along the length of a river, egg rearing is also presumed to take place in burrow. The species name comes from the Latin gibbus hump and Greek cep head, a reference to the centrally located ridge. Common names include gibbys , leopard sailfin catfish and clown plecs the juveniles have a comical appearance due to the large and obvious spots. Ancistrus gibbiceps and Glyp ... more details
journal last Harbury first PB coauthors Plecs, JJ Tidor, B Alber, T and Kim, PS year 1998 title High ... nsb0696 510 last1 Gonzalez first1 L last2 Plecs first2 JJ last3 Alber first3 T. year 1996 title An engineered ... Harbury first1 PB last2 Plecs first2 JJ last3 Tidor first3 B last4 Alber first4 T last5 Kim first5 PS ... more details
DISPLAYTITLE Plecostomus merge Loricariid discuss Talk Plecostomus Loricariid date October 2008 Image Plecostomus 700.jpg 275px thumb An adult giant algae sucker , Pterygoplichthys pardalis . Image Youngpleco.jpg 175px thumb A young pleco attached to the side of the aquarium glass. Plecostomus is also a synonym of the genus Hypostomus and the genus Loricariichthys . Hypostomus plecostomus known by some people as a sucker fish is the scientific name for a type of Fresh water freshwater tropical Central America Central and South America n fish belonging to the family Loricariidae . They are large algae eaters, and to differentiate them from small algae eaters, they are often referred to as plecostomus , often abbreviated as plecos or plecs . They are extremely popular in aquaria for their ability to clean tanks by eating algae growth and dead fish. In Malaysia , these fish are called ikan bandaraya or municipal fish in English because of their ability to clean fish tanks. These friendly natured fish can typically be purchased when about 8 cm 3 inches and may grow up to 60 cm 2 ft if there is adequate room, making them mostly impractical for any but the largest aquariums. Plecos are omnivorous but, in the wild, feed mostly on plant material at night. During the day, their unusual Loricariidae Physiology and genetics omega irides block a lot of the light out of their eyes, but they are usually open at night. They can roll their eye within their sockets. As they age, their foreheads enlarge in a peculiar manner. Plecos may become more peaceful with age and are best kept individually in tanks. Because of their potentially large size and peaceful behaviour, it may be advisable to procure a less aggressive catfish. In a suitably large tank, a solitary plecostomus will live amicably enough in a community alongside other tropical fish. These catfish may survive in tanks with cold water species like goldfish , but it is generally not advised due to the diff ... more details
Taxobox name Pterygoplichthys image Pterygoplichthys sp.jpg image width 250px image caption Pterygoplichthys sp. regnum Animal ia phylum Chordate Chordata classis Actinopterygii ordo Siluriformes familia Loricariidae subfamilia Hypostominae tribus Pterygoplichthyini genus Pterygoplichthys genus authority Theodore Nicholas Gill Gill , 1858 subdivision ranks Species subdivision Pterygoplichthys anisitsi P. anisitsi br Pterygoplichthys disjunctivus P. disjunctivus br Pterygoplichthys etentaculatus P. etentaculatus br Pterygoplichthys gibbiceps P. gibbiceps br Pterygoplichthys joselimaianus P. joselimaianus br Pterygoplichthys lituratus P. lituratus br Pterygoplichthys multiradiatus P. multiradiatus br Pterygoplichthys pardalis P. pardalis br Pterygoplichthys parnaibae P. parnaibae br Pterygoplichthys punctatus P. punctatus br Pterygoplichthys scrophus P. scrophus br Pterygoplichthys undecimalis P. undecimalis br Pterygoplichthys weberi P. weberi br Pterygoplichthys xinguensis P. xinguensis br Pterygoplichthys zuliaensis P. zuliaensis Pterygoplichthys from the Greek pteryg , meaning wing , hoplon weapon and ichthys meaning fish is a genus of the armored catfish family Loricariidae . ref name fishbase FishBase genus genus Pterygoplichthys year 2007 month May ref These fish are commonly known as sailfin armoured catfish or sailfin plecs. Taxonomy This genus was described in 1858 by Theodore Nicholas Gill . The type species is Pterygoplichthys etentaculatus originally known as Hypostomus duodecimalis . ref name fishbase Pterygoplichthys has undergone much shifting in the past decades. Previously Liposarcus , Glyptoperichthys and Pterygoplichthys had been named as separate genera. ref name weber cite paper author C. Weber title Nouveaux taxa dans Pterygoplichthys sensu lato Pisces, Siluriformes, Loricariidae publisher Revue Suisse de Zoologie year 1991 ref ref name weber2 cite paper author C. Weber title R vision du genre Pterygoplichthys sensu lato publisher R ... more details
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