Las tretas de la vulgar y comun esgrima de espada sola, y con armas dobles, que reprobò ... Luis Pacheco de Narvaez y las oposiciones que dispuso en verdadera destreza contra ellas /

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Characterizing the timing behaviour of power-line communication by means of simulation

Although power-line communication (PLC) is not a new technology, its use to support communication with timing requirements is still the focus of ongoing research. Recently, a new infrastructure was presented, intended for communication using power lines from a central location to geographically dispersed nodes using inexpensive devices. This new infrastructure uses a two-level hierarchical power-line system, together with an IP-based network. Within this infrastructure, in order to provide end-toend communication through the two levels of the powerline system, it is necessary to fully understand the behaviour of the underlying network layers. The masterslave behaviour of the PLC MAC, together with the inherent dynamic topology of power-line networks are important issues that must be fully characterised. Therefore, in this paper we present a simulation model which is being used to study and characterise the behaviour of power-line communication.

Integration of TCP/IP and PROFIBUS protocols

Recent technological developments are pulling fieldbus networks to support a new wide class of applications, such as industrial multimedia applications. These applications are usually supported by the widely used TCP/IP stack. It is thus essential to provide support to TCP/IP based applications, in fieldbus networks. This paper presents an effort that is being carried out to integrate the TCP/IP and PROFIBUS stacks, in order to support industrial multimedia applications, whilst guarantying the timing requirements of control-related traffic.

Industrial multimedia over factory-floor networks

In this paper we describe a real-time industrial communication network able to support both controlrelated and multimedia traffic. The industrial communication network is based on the PROFIBUS standard, with multimedia capabilities being provided by an adequate integration of TCP/IP protocols into the PROFIBUS stack. From the operational point of view the integration of TCP/IP into PROFIBUS is by itself a challenge, since the master-slave nature of the PROFIBUS MAC makes complex the implementation of the symmetry inherent to IP communications. From the timeliness point of view the challenge is two folded. On one hand the multimedia traffic should not interfere with the timing requirements of the "native" control-related PROFIBUS traffic (typically hard real-time). On the other hand multimedia traffic requires certain levels of quality-of-service to be attained. In this paper we provide a methodology that enables fulfilling the timing requirements for both types of traffic in these real-time industrial LAN. Moreover, we describe suitable algorithms for the scheduling support of concurrent multimedia streams.

A high performance wireless fieldbus in industrial multimedia-related environment

This paper summarises the most important solutions that have emerged from the work carried out by our team within the framework of the EU (IST-1999-11316) project RFieldbus - High Performance Wireless Fieldbus in Industrial Multimedia-Related Environment. Within this project, Profibus was chosen as the fieldbus platform. Essentially, extensions to the current Profibus standard are being developed in order to provide Profibus with wireless, mobility and industrialmultimedia capabilities. In fact, providing these extensions means fulfilling strong requirements, namely to encompass the communication between wired (currently available) and wireless/mobile devices and to support real-time control traffic and multimedia traffic in the same network.

Queuing and routing in a hierarchical powerline communication system

Although power-line communication (PLC) is not a new technology, its use to support data communication with timing requirements is still the focus of ongoing research. A new infrastructure intended for communication using power lines from a central location to dispersed nodes using inexpensive devices was presented recently. This new infrastructure uses a two-level hierarchical power-line system, together with an IP-based network. Due to the master-slave behaviour of the PLC medium access, together with the inherent dynamic topology of power-line networks, a mechanism to provide end-to-end communication through the two levels of the power-line system must be provided. In this paper we introduce the architecture of the PLC protocol layer that is being implemented for this end.

A complex protocol layer as a linux user-space process

With the current complexity of communication protocols, implementing its layers totally in the kernel of the operating system is too cumbersome, and it does not allow use of the capabilities only available in user space processes. However, building protocols as user space processes must not impair the responsiveness of the communication. Therefore, in this paper we present a layer of a communication protocol, which, due to its complexity, was implemented in a user space process. Lower layers of the protocol are, for responsiveness issues, implemented in the kernel. This protocol was developed to support large-scale power-line communication (PLC) with timing requirements.

Ubuntu-LEADER : el uso de los entornos y herramientas virtuales para el aprendizaje y la cooperación con Sudáfrica.

Resumen en inglés. Capítulo incluido en el monográfico número 6 de la revista 'Tejuelo. Didáctica de la lengua y la literatura. Educación', titulado 'Comunicación social'

Comunicación social.

Trabajo publicado como monográfico número 6 de la revista 'Tejuelo. Didáctica de la lengua y la literatura. Educación'

Há festa na comunidade! Uma leitura de Luis Pacheco

Estendo o pé e toco com o calcanhar numa bochecha de carne macia e morna; viro-me para o lado esquerdo, de costas para a luz do candeeiro, e bafeja-me um hálito calmo e suave; faço um gesto ao acaso no escuro e a mão, involuntária tenaz de dedos, pulso, sangue latejante, descai-me sobre um seio momo nu ou numa cabecita de bebê, com um tufo de penugem preta no cocuruto da careca, a moleirinha latejante; respiramos na boca uns dos outros, trocamos pemas e braços, bafos suor uns com os outros, uns pelos outros, tão conchegados, tão embrulhados e enleados num mesmo calor como se as nossas veias e artérias transportassem o mesmo sangue girando, palpitassem compassadamente, silenciosamente, duma igual vivificante seiva. Esta é uma das mais belas frases-iniciais da literatura portuguesa. Sim, frase: aquilo que vos pareceram pontos finais eram, na verdade, pontos e vírgula. E que bem maneja Luiz Pacheco o ponto e vírgula! Como sói acontecer aos grandes escritores, Luiz Pacheco transforma um mísero sinal prosódico numa marca de estilo. Nada que nos surpreenda, ou o livro onde, na minha edição, o conto se insere não se intitulasse, aliás. Exercícios de Estilo.

Rayos de la luz practica con que Don Feliz Pacheco Ortiz ... desvanece las sombras con que el Doctor Don Francisco Sanz ... intento obscurecer la Hypothesis de fiebres del Doctor Don Martin Martinez ... y haze resplandecer la particular Hypothesis y debida curacion de la fiebres intermitentes del Doctor Don Luis Enriquez ...

Discurso previo apologetico sobre el constitutivo de la calentura, a favor de ... Martin Martinez y contra ... Francisco Saenz de los Rios ... escrito por ... Francisco Valles de p. 2¶2 a 4¶3.

Relacion de las reales exequias, que se celebraron por el Serenissimo Señor Luis XIV. el Grande, Rey Christianissimo de Francia, abuelo de la Magestad del Rey nuestro señor ... : Siendo mayordomo mayor, y executandolas por su Real precepto el ... señor Don Juan Manuel Fernandez Pacheco ... : Escrita, y dada a luz de orden de su Excelencia. Año de 1717.

Luis El Grande. Oracion funebre del muy alto, muy poderoso, y muy excelente Principe, Luis Catorze, Rey Christianissimo de Francia, llamado comunmente El Grande : Dixose en la Iglesia del Real Convento de la Encarnacion de Madrid, à catorze de mayo de 1716 / por el padre maestro Agustin de Castejòn ..., con portada, pie de imprenta, paginación y signatura propios, encuadernada entre la p. 158 y 159, y con reclamos en la obra anterior.

La agricultura de Torre Pacheco.

En el libro se ofrecen las conclusiones al estudio del sector agrícola ya que es el sector más activo

La jóven iniciativa empresarial de Torre Pacheco : análisis de la economía de la zona y trámites legales para la creación de empresas.

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