Eric Johnson (Austin, 17 de agosto, 1954) es un guitarrista estadounidense de rock instrumental, aunque en sus grabaciones incorpora elementos de jazz fusión, New Age y country.
Eric Johnson nació en Austin (Texas, EE. UU.), por lo que desde el comienzo se vio influido por el blues y el country, aunque esto no impediría que tuviera también sus miras en otros estilos de música.
A los 16 años comenzó su carrera profesional como músico en la banda Mariani. Su publicación de cien copias de un álbum de demostración fue uno de los más raros de todas las grabaciones psicodélicas de aquella época. En 1974 se unió a la banda The Electromagnets, que en otoño de ese mismo año grabó su elepé homónimo, y con quienes continuaría hasta su ruptura en 1977.
Entre 1976 y 1978 trabajó en el álbum Seven Worlds, que no saldría a la luz hasta 1998. Uno de los momentos clave en la carrera de Johnson se produjo cuando, tras ver su intervención en un programa de televisión llamado Austin City Limits, Prince lo recomendó a su compañía, Warner Bros Records. Reprise Records, subsidiaria de la Warner, contrató a Eric y en abril del 1986 lanzaría su primer álbum en solitario, Tones, que destacó por la abundancia de solos de guitarra. El tema Zap fue nominado en los premios Grammy a la mejor canción de rock instrumental. Johnson empezaba a cobrar importancia en las revistas musicales como un excepcional guitarrista y compositor.
Antes de volver a grabar y lanzar su siguiente disco se cambió a la discográfica Capitol Records, con la que lanzaría en marzo de 1990, Ah Via Musicom. El disco logra una gran aceptación, en especial el tema Cliffs of Dover, que alcanza el quinto lugar en las listas estadounidenses y ganaría el premio Grammy a la mejor canción de rock instrumental. Este disco daría a Eric la distinción de ser el primer artista en tener tres canciones instrumentales, provenientes de un mismo disco, en los Top 10. Eric estuvo 3 años de promoción en carretera y después hizo una gira con B.B. King y contribuyó en discos de Chet Atkins y Dweezil Zappa.
No menos importante fue su siguiente álbum, Venus Isle, de (1996), para el que asumió también las labores de teclista y productor. El disco presenta a un Johnson espléndido, tanto vocal como instrumentalmente. Las canciones instrumentales más notables de este disco son Manhattan y S.R.V, tributo a su paisano y leyenda de la guitarra, Stevie Ray Vaughan. La promoción del disco se realizó con el exitoso G3 tour, donde comparte cartel con sus amigos y también virtuosos Joe Satriani y Steve Vai.
Uno de los proyectos paralelos favoritos de Eric es el trío musical de blues Alien Love Child, el cual lanzó en el año 2000 el disco Live and Beyond con la compañía discográfica Favored Nations, cuyo dueño es Steve Vai. La canción Rain fue nominada en los Grammy como mejor canción de pop instrumental.
En el año 2002 lanzó el disco Souvenirs, una colección de doce canciones previamente no lanzadas, que incluye demos y actuaciones en directo. En el 2005 lanzó su disco Bloom y en enero de ese mismo año presentó junto a la compañía Fender su propia línea de guitarras Stratocaster.
En el año 2006, para festejar los diez años del G3, Johnson participó junto a John Petrucci y Joe Satriani.
Magnetic resonance imaging (MRI), or Nuclear magnetic resonance imaging (NMRI), is primarily a medical imaging technique most commonly used in radiology to visualize the structure and function of the body. It provides detailed images of the body in any plane. MRI provides much greater contrast between the different soft tissues of the body than computed tomography (CT) does, making it especially useful in neurological (brain), musculoskeletal, cardiovascular, and oncological(cancer) imaging. Unlike CT, it uses no ionizing radiation, but uses a powerful magnetic field to align thenuclear magnetization of (usually) hydrogenatoms in water in the body. Radiofrequency fields are used to systematically alter the alignment of this magnetization, causing the hydrogen nuclei to produce a rotating magnetic field detectable by the scanner. This signal can be manipulated by additional magnetic fields to build up enough information to construct an image of the body.
MRI is a relatively new technology, which has been in use for little more than 30 years (compared with over 110 years for X-ray radiography). The first MR Image was published in 1973[1] and the first study performed on a human took place on July 3, 1977.[2]
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HTML, siglas de HyperText Markup Language (Lenguaje de Marcas de Hipertexto), es el lenguaje de marcado predominante para la construcción de páginas web. Es usado para describir la estructura y el contenido en forma de texto, así como para complementar el texto con objetos tales como imágenes. HTML se escribe en forma de "etiquetas", rodeadas por corchetes angulares (<,>). HTML también puede describir, hasta un cierto punto, la apariencia de un documento, y puede incluir un script (por ejemplo Javascript), el cual puede afectar el comportamiento de navegadores web y otros procesadores de HTML.
HTML también es usado para referirse al contenido del tipo de MIME text/html o todavía más ampliamente como un término genérico para el HTML, ya sea en forma descendida del XML (como XHTML 1.0 y posteriores) o en forma descendida directamente de SGML (como HTML 4.01 y anteriores).
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Internetworking involves connecting two or more distinct computer networks or network segments via a common routing technology. The result is called an internetwork (often shortened to internet).
The most notable example of internetworking is the Internet (capitalized), a network of networks based on many underlying hardware technologies, but unified by an internetworking protocol standard, called the Internet Protocol Suite (TCP/IP).
The network elements used to connect individual networks are known as routers, but were originally
called gateways, a term that was deprecated in this contex
t, due to confusion with fu
nctionally different devices using the same name.
The interconnection of networks with bridges (link-layer devices) is sometimes incorrectly termed "internetworking", but the resulting system is simply a larger, single subnetwork, and no internetworking protocol (such as IP) is required to traverse it. However, a single computer network may be converted into an internetwork by dividing the network into segments and then adding routers between the segmen
PHP is a widely-used general-purpose scripting language that is especially suited for web development and can be embedded into HTML. It ge
nerally runs on a web server, taking PHP code as its input and creating web pages as output. It can be deployed on most web servers and on almost every operating system and platform free of charge.[5] PHP is installed on more than 20 million websites and 1 million web servers.[6] The most recent major release of PHP was version 5.2.6 on May 1, 2008.[7]
JPEG 2000 requires far greater decompression time than JPEG and allows more sophisticated progressive downloads, yet averages similar compression rates. JPEG 2000 becomes increasingly blurred with higher compression ratios rather than generating JPEG's "blocking and ringing" artifacts, complicating direct comparison of their respective compression rates.
Part of JPEG 2000 has been published as an ISO standard, ISO/IEC 15444-1:2000. As of 2008, JPEG 2000 is not widely supported in web browsers, and hence is not generally used on the World Wide Web.
For traditional JPEG, additional meta-data, e.g. lighting and exposur
e conditions, is kept in an application marker in the Exif format specified by the JEITA. JPEG2000 chooses a different route, encoding the same meta data in XML form. The reference between the E
xif tags and the XML elements is standardized by the ISO TC42 committee in the standard 12234-1.4.
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Uniform Resource Locator (URL) is a Uniform Resource Identifier (URI) which also specifies where the identified resource is available and the protocol for retrieving it.[1] In popular usage and in many technic
al documents it is often confused as a synonym for uniform resource identifier.
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The PET (Personal Electronic Transactor) was a home-/personal computer produced by Commodore starting in 1977. [1] Although it was not a top seller outside the Canadian, US, and UK educational markets, it was Commodore's first full-featured computer and would form the basis for their futur
e success.
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Metropolitan area networks, or MANs, are large computer networks usually spanning a city. They typically use wireless infrastructure or Optical fiber connection
s to link
their sites.
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A local areanetwork (LAN) is a computer network covering a small physical area, like a home, office, or small group of buildings, such as a school, or
A virtual private network (VPN) is a computer network in which some of the links between nodes are carried by open connections or virtual circuits in some larger network (e.g., the Internet) instead of by physical wires. The link-layer protocols of the virtual network are said to be tunneled through the larger network when this is the case. One common application is secure communications through the public Internet, but a VPN need not have explicit security features, such as authentication or content encryption. VPNs, for example, can be used to separate the traffic of different user communities over an underlying network with strong security features.
Computer-aided design (CAD) is the use of computer technology to aid in the design and especially the drafting (technical drawing and engineering drawing) of a part or product, including entire buildings. It is both a visual (or drawing) and symbol-based method of communication whose conventions are particular to a specific technical field.
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The Common Information Model (CIM) is an open standard that defines how managed elements in an IT environment are represented as a common set of objects and relationships between them. This is intended to allow consistent management of these managed elements, independent of their manufacturer or provider.
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Computer-aided engineering (often referred to as CAE) is the use of information technology to support engineers in tasks such as analysis, simulation, design, manufacture, planning, diagnosis, and repair. Software tools that have been developed to support these activities are considered CAE tools. CAE tools are being used, for example, to analyze the robustness and performance of components and assemblies. The term encompasses simulation, validation, and optimization of products and manufacturing tools. In the future, CAE systems will be major providers of information to help support design teams in decision making.
