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EL PRESENTE TRABAJO PRESENTA UNA RED INALAMBRICA EN LA FRECUENCIA DE ESPECTRO ENSANCHADO EN LA QUE PUEDE MANEJAR LA SEÑAL DE UNO O VARIOS PROVEEDORES DE ACCESO A INTERNET A LA VEZ EN LA MISMA RED, MANEJANDO SEÑALES CON TABLAS DE RUTEO, PARA PODER TENER AL ALCANCE A TODA LA COMUNIDAD CON ENLACES DEDICADOS INALAMBRICOS. SE UTILIZA LA MODALIDAD DE CELDA PARA LA DISTRIBUCION A USUARIOS FINALES PARA DE ESTA MANERA DAR SOLUCIONES A CIUDADELAS Y COMUNIDADES, SE UTILIZAN ENLACES DEDICADOS PARA USUARIOS CORPORATIVOS QUE DEMANDEN MAYOR ANCHO DE BANDA, ADEMAS PUEDE SERVIR COMO CENTRO DE DISTRIBUCION Y HOSPEDAJE PARA INFORMACION AL PUBLICO DE ENTIDADES PUBLICAS, DE ESTA MANERA CONTRIBUYE A LA MASIFICACION DE INTERNET.
The Lebanon-based al-Ahbash movement advocates a radical neo-traditionalist version of Sunni Islam. Although numerically modest, it has established branches in several Western countries, where it continues the campaign it started in the Middle East against the Salafi trend. The movement uses the Internet innovatively and demonstrates that the strategic use of web-based interactive communication tools does not necessarily lead to the reinforcement of a culture of dialogue; on the contrary they can also serve as a means to achieve virtual ideological hegemony.
A 21. században egyre nagyobb hangsúlyt kap az információtechnika, a mai fiatalok már egy olyan világban nőnek fel, ahol a mindennapi életük részévé vált a világháló. Az elmúlt években az internet megkerülhetetlen médiummá vált, ami a kapcsolattartás mellett az üzleti életben is rendkívül fontos szerepet játszik. Az internet a szórakozás és a szabadidő eltöltése mellett nagy szerepet játszik a gazdasági életben is.
This article examines the contingent value of entrepreneurs' networks to survival likelihood of Internet ventures, and the dynamics of entrepreneurs' networks over time. The empirical data are composed of the longitudinal surveys of 94 Internet ventures in Beijing, China. The study found the positive and the negative contingent effects of structural holes on the survival likelihood of new firms. The study found that networking skills of entrepreneurs are associated positively with the changes in networks over time. Improved social skills lead to greater firm legitimacy.
Neste projeto apresentamos três modelos para publicidade na Internet, e mecanismos associados a cada modelo, analisando suas propriedades como estabilidade, otimalidade, prova de estratégia, e consumo de tempo. Primeiramente apresentamos um dos primeiros artigos publicados sobre o problema de leilões para publicidade na Internet, que descreve essencialmente o funcionamento dos atuais leilões para publidade na Internet. Em seguida, apresentamos outros dois modelos. O primeiro deles permite publicidade com exclusividade. O segundo modelo permite mais opções ao leiloeiro e aos anunciantes, ao permitir preços mínimos de venda e preços máximos de compra.
Abstract only. The paper copy of the whole thesis is available for reading room use at the Library of Social Sciences (Unioninkatu 35) . Microfiche copies of these theses are available for interlibrary loans.
Use the search mechanisms for finding information in the Internet. National and international searching tools to research information in hipermedia pages in the Worl Wide Web. Formalarization of the syntax for searching information in the Internet.
International Internet Telephony has been evolving since its introduction in 1996. In 1996, the typical player was someone like Delta Three, who used the Internet as a backbone network, used agreements with local ISPs to ?gray-market? terminate traffic in a country, such as Columbia or Israel, and then used a VocalTec type gateway to interconnect the local call with an E&M or R2 type signaling. Voice quality was bad, call set up time interminable, and call completions were limited at best to 10-15%. The only selling point was price. Today, four years later, there is a clear segmentation of models. At one extreme is the extension of the Delta Three approach still being provided by delta Three as well as IBasis and ITXC. This is the ?be everywhere but be shallow? approach. This approach uses the Internet as a backbone and then deals with...
The topology of the Internet has initially been modelled as an undirected graph, where vertices correspond to so-called Autonomous Systems (ASs),and edges correspond to physical links between pairs of ASs. However, in order to capture the impact of routing policies, it has recently become apparent that one needs to classify the edges according to the existing economic relationships (customer-provider, peer-to-peer or siblings) between the ASs. This leads to a directed graph model in which traffic can be sent only along so-called valley-free paths. Four different algorithms have been proposed in the literature for inferring AS relationships using publicly available data from routing tables. We investigate the differences in the graph models produced by these algorithms, focussing on connectivity measures. To this aim, we compute the max...
Singapore-MIT Alliance (SMA)
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