Actualizaciones en Numenor2008-10-03T12:48:10-07:00olea@cicese.mxVehicular Opportunistic Communication Under the Microscope2008-10-03T12:48:10-07:002008-10-03T12:48:10-07:00Keshav et al.304/1223063290<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp473.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (1.67 MB) </td></tr><tr><th align="right" nowrap>Autores </th><td>David Hadaller, Srinivasan Keshav; Tim Brecht; Shubham Agarwal</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>Vehicular Opportunistic Communication Under the Microscope</td></tr><tr><th align="right" nowrap>Año </th><td>2007</td></tr><tr><th align="right" nowrap>Subido por </th><td>C. Caloca el 03/10/2008 a las 12:48</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=304&t=1223063290Vehicular Ad-Hoc Networks: From Vision to Reality and Back2008-10-03T12:31:10-07:002008-10-03T12:31:10-07:00Füßler et al.303/1223062270<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp472.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (253 KB) </td></tr><tr><th align="right" nowrap>Autores </th><td>Holger Füßler; Sascha Schnaufer; Matthias Transier Wolfgang Effelsberg</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>Vehicular Ad-Hoc Networks: From Vision to Reality and Back</td></tr><tr><th align="right" nowrap>Año </th><td>2007</td></tr><tr><th align="right" nowrap>Subido por </th><td>C. Caloca el 03/10/2008 a las 12:31</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=303&t=1223062270Carpeta de Artículos: Vanets2008-10-03T12:20:28-07:002008-10-03T12:20:28-07:00C. Caloca110/1223061628<table border="0" cellpadding="0" cellspacing="0"><tr><th align="right">Nombre </th><td>Vanets</td></tr><tr><th align="right">Descripción </th><td>Vehicular Ad hoc Networks</td></tr><tr><th align="right">Creada por </th><td>C. Caloca el 03/10/2008 a las 12:20</td></tr></table>http://numenor.cicese.mx/?p=articulos&c=110&t=1223061628A survey of human-computer interaction design in science fiction movies2008-07-28T17:59:16-07:002008-07-28T17:59:16-07:00Butz302/1217293156<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp0.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (0 KB) </td></tr><tr><th align="right" nowrap>Autores </th><td>Michael Schmitz and Christoph Endres and Andreas Butz</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>A survey of human-computer interaction design in science fiction movies</td></tr><tr><th align="right" nowrap>Año </th><td>2008</td></tr><tr><th align="right" nowrap>Revista / Conferencia </th><td>INTETAIN 08: Proceedings of the 2nd international conference on INtelligent TEchnologies for interactive enterTAINment</td></tr><tr><th align="right" nowrap>Subido por </th><td>E. Avilés el 28/07/2008 a las 17:59</td></tr><tr><td colspan="2"><br><em>Resumen: </em>Science Fiction movies have always been a medium for speculation about the future of technology. The most visible part of technology often is its interaction design, which therefore appears prominently in these movies. This paper presents a survey of human-computer interaction designs in SciFi movies during the past decades and it relates the techniques shown there to existing technologies and prototypes in research. Different types of interaction are categorized according to their application domain in real life and compared to current research in human-computer interaction.</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=302&t=1217293156A survey of human-computer interaction design in science fiction movies2008-07-28T17:51:04-07:002008-07-28T17:51:04-07:00Butz301/1217292664<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp0.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (0 KB) </td></tr><tr><th align="right" nowrap>Autores </th><td>Michael Schmitz and Christoph Endres and Andreas Butz</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>A survey of human-computer interaction design in science fiction movies</td></tr><tr><th align="right" nowrap>Año </th><td>2008</td></tr><tr><th align="right" nowrap>Revista / Conferencia </th><td>INTETAIN '08: Proceedings of the 2nd international conference on INtelligent TEchnologies for interactive enterTAINment</td></tr><tr><th align="right" nowrap>Subido por </th><td>E. Avilés el 28/07/2008 a las 17:51</td></tr><tr><td colspan="2"><br><em>Resumen: </em>Science Fiction movies have always been a medium for speculation about the future of technology. The most visible part of technology often is its interaction design, which therefore appears prominently in these movies. This paper presents a survey of human-computer interaction designs in SciFi movies during the past decades and it relates the techniques shown there to existing technologies and prototypes in research. Different types of interaction are categorized according to their application domain in real life and compared to current research in human-computer interaction.</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=301&t=1217292664A survey of human-computer interaction design in science fiction movies2008-07-28T17:43:21-07:002008-07-28T17:43:21-07:00Butz300/1217292201<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp0.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (0 KB) </td></tr><tr><th align="right" nowrap>Autores </th><td>Michael Schmitz and Christoph Endres and Andreas Butz</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>A survey of human-computer interaction design in science fiction movies</td></tr><tr><th align="right" nowrap>Año </th><td>2008</td></tr><tr><th align="right" nowrap>Revista / Conferencia </th><td>INTETAIN '08: Proceedings of the 2nd international conference on INtelligent TEchnologies for interactive enterTAINment</td></tr><tr><th align="right" nowrap>Subido por </th><td>E. Avilés el 28/07/2008 a las 17:43</td></tr><tr><td colspan="2"><br><em>Resumen: </em>Science Fiction movies have always been a medium for speculation about the future of technology. The most visible part of technology often is its interaction design, which therefore appears prominently in these movies. This paper presents a survey of human-computer interaction designs in SciFi movies during the past decades and it relates the techniques shown there to existing technologies and prototypes in research. Different types of interaction are categorized according to their application domain in real life and compared to current research in human-computer interaction.</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=300&t=1217292201Borrador de Tesis2008-07-16T12:02:38-07:002008-07-16T12:02:38-07:00Olea299/1216234958<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp471.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (2.78 MB) </td></tr><tr><th align="right" nowrap>Autores </th><td>Cesar Olea</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>Borrador de Tesis</td></tr><tr><th align="right" nowrap>Año </th><td>2008</td></tr><tr><th align="right" nowrap>Lugar y Fecha </th><td>Ensenda, Baja California, Julio 2008</td></tr><tr><th align="right" nowrap>Subido por </th><td>C. Olea el 16/07/2008 a las 12:02</td></tr><tr><td colspan="2"><br><em>Resumen: </em>Borrador de tesis</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=299&t=1216234958iBubble: Multi-keyword Routing Protocol for2008-07-11T19:34:52-07:002008-07-11T19:34:52-07:00Lu et al.298/1215830092<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp470.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (348 KB) </td></tr><tr><th align="right" nowrap>Autores </th><td>Xiaoming Lu; Matt Spear; Karl Levitt; S. Felix Wu</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>iBubble: Multi-keyword Routing Protocol for</td></tr><tr><th align="right" nowrap>Año </th><td>2008</td></tr><tr><th align="right" nowrap>Revista / Conferencia </th><td>IEEE INFOCOM</td></tr><tr><th align="right" nowrap>Lugar y Fecha </th><td>Phoenix, AZ, USA, april 2008</td></tr><tr><th align="right" nowrap>Subido por </th><td>A. Garcia el 11/07/2008 a las 19:34</td></tr><tr><td colspan="2"><br><em>Resumen: </em>Many tasks require multiple sensing capabilities;
in Wireless Sensor Networks (WSN), it is expensive to deploy
a homogeneous network wherein every sensor has the same
functionality. Instead, it is economical to deploy a heterogeneous
network wherein sensors differ in their capabilities; in such a
network, efficient data querying is essential. We propose a multikeyword
routing protocol, iBubble, for Heterogeneous Wireless
Sensor Networks (HWSN) where keywords describe sensor functionalities.
iBubble provides an efficient query interface for locating
data; queries are routed only along paths with nodes matching
the query. iBubble utilizes an intelligent bubbling mechanism to
propagate keywords to the Base-Station (BS). The keywords are
aggregated via a novel use of lattices to reduce network cost. We
show that iBubble can emulate diffusion and generally produce
less traffic by restricting the query dissemination based upon
both application type and data value. Our study analytically
compares iBubble and diffusion, and formally characterizes the
conditions required for iBubble to outperform diffusion in both
static (fixed) and dynamic (mobile) networks. We did extensive
simulations, our results match our theory and show that iBubble
can outperform diffusion in many heterogeneous deployments
when keyword distributions are clustered enough to satisfy
the fraction of the network involved in a query/update by our
analytical bound. Additionally, iBubble handles mobility, faulttolerance,
and provides network diagnosis via keyword bubbling.
By utilizing keywords, iBubble bridges many routing and energy
problems prevalent in WSN, and provides a simple, uniform
solution.</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=298&t=1215830092Beyond Pilots: Keeping Rural Wireless Networks Alive2008-07-11T17:56:49-07:002008-07-11T17:56:49-07:00Surana et al.297/1215824209<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp469.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (442 KB) </td></tr><tr><th align="right" nowrap>Autores </th><td>Sonesh Surana; Rabin Patra; Sergiu Nedevschi; M. Ramos; Lakshminarayanan Subramanian; Yahel Ben-David; Eric Brewer</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>Beyond Pilots: Keeping Rural Wireless Networks Alive</td></tr><tr><th align="right" nowrap>Año </th><td>2008</td></tr><tr><th align="right" nowrap>Revista / Conferencia </th><td>Symp. on Networked Systems Design and Implementation (NSDI)</td></tr><tr><th align="right" nowrap>Lugar y Fecha </th><td>San Francisco, CA, USA, april 2008</td></tr><tr><th align="right" nowrap>Subido por </th><td>A. Garcia el 11/07/2008 a las 17:56</td></tr><tr><td colspan="2"><br><em>Resumen: </em>Very few computer systems that have been deployed in
rural developing regions manage to stay operationally
sustainable over the long term; most systems do not go
beyond the pilot phase. The reasons for this failure vary:
components fail often due to poor power quality, fault
diagnosis is hard to achieve in the absence of local expertise
and reliable connectivity for remote experts, and
fault prediction is non-existent. Any solution addressing
these issues must be extremely low-cost for rural viability.
We take a broad systemic view of the problem, document
the operational challenges in detail, and present
low-cost and sustainable solutions for several aspects
of the system including monitoring, power, backchannels,
recovery mechanisms, and software. Our work in
the last three years has led to the deployment and scaling
of two rural wireless networks: (1) the Aravind
telemedicine network in southern India supports videoconferencing
for 3000 rural patients per month, and is
targeting 500,000 patient examinations per year, and (2)
the AirJaldi network in nothern India provides Internet
access and VoIP services to 10,000 rural users.</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=297&t=1215824209Supporting Vehicular Mobility2008-07-10T17:32:49-07:002008-07-10T17:32:49-07:00Giannoulis et al.296/1215736369<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp468.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (272 KB) </td></tr><tr><th align="right" nowrap>Autores </th><td>Anastasios Giannoulis; Marco Fiore; Edward Knightly</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>Supporting Vehicular Mobility</td></tr><tr><th align="right" nowrap>Año </th><td>2008</td></tr><tr><th align="right" nowrap>Revista / Conferencia </th><td>ACM/USENIX MobiSys</td></tr><tr><th align="right" nowrap>Lugar y Fecha </th><td>Breckenridge, CO, USA, June 2008</td></tr><tr><th align="right" nowrap>Subido por </th><td>A. Garcia el 10/07/2008 a las 17:32</td></tr><tr><td colspan="2"><br><em>Resumen: </em>Deployments of city-wide multi-hop 802.11 networks introduce challenges for maintaining client performance at vehicular speeds. We experimentally demonstrate that current
network interfaces employ policies that result in long outage durations, even when clients are always in range of at
least one access point. Consequently, we design and evaluate a family of client-driven handoff techniques that target vehicular mobility in multi-tier multi-hop wireless mesh
networks. Our key technique is for clients to invoke an association change based on (i) joint use of channel quality
measurements and AP quality scores that reflect long-term
differences in AP performance and (ii) controlled measurement and hand-off time scales to balance the need for the
instantaneously best association against performance penalties incurred from spurious handoffs due to channel fluctuations and marginally improved associations. We utilize a
4,000 user urban deployment to evaluate the performance of
a broad class of hand-off policies.</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=296&t=1215736369The Networking Shape of Vehicular Mobility2008-07-10T17:29:11-07:002008-07-10T17:29:11-07:00Fiore & Haerri295/1215736151<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp467.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (2.51 MB) </td></tr><tr><th align="right" nowrap>Autores </th><td>Marco Fiore; Jerome Haerri</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>The Networking Shape of Vehicular Mobility</td></tr><tr><th align="right" nowrap>Año </th><td>2008</td></tr><tr><th align="right" nowrap>Revista / Conferencia </th><td>ACM MobiHoc</td></tr><tr><th align="right" nowrap>Lugar y Fecha </th><td>Hong Kong, China, May 2008</td></tr><tr><th align="right" nowrap>Subido por </th><td>A. Garcia el 10/07/2008 a las 17:29</td></tr><tr><td colspan="2"><br><em>Resumen: </em>Mobility is the distinguishing feature of vehicular networks, affecting
the evolution of network connectivity over space and time
in a unique way. Connectivity dynamics, in turn, determine the
performance of networking protocols, when they are employed in
vehicle-based, large-scale communication systems. Thus, a key
question in vehicular networking is: which effects does nodes mobility
generate on the topology of a network built over vehicles?
Surprisingly, such a question has been quite overlooked by the networking
research community. In this paper, we present an in-depth
analysis of the topological properties of a vehicular network, unveiling
the physical reasons behind the peculiar connectivity dynamics
generated by a number of mobility models. Results make
one think about the validity of studies conducted under unrealistic
car mobility and stimulate interesting considerations on how network
protocols could take advantage of vehicular mobility to improve
their performance.</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=295&t=1215736151Carpeta de Artículos: Vehicular Networks2008-07-10T17:26:06-07:002008-07-10T17:26:06-07:00A. Garcia109/1215735966<table border="0" cellpadding="0" cellspacing="0"><tr><th align="right">Nombre </th><td>Vehicular Networks</td></tr><tr><th align="right">Descripción </th><td>VANets, V2V, etc...</td></tr><tr><th align="right">Creada por </th><td>A. Garcia el 10/07/2008 a las 17:26</td></tr></table>http://numenor.cicese.mx/?p=articulos&c=109&t=1215735966Decoding Code on a Sensor Node2008-07-10T13:28:28-07:002008-07-10T13:28:28-07:00Rickenbach & Wattenhofer294/1215721708<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp466.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (155 KB) </td></tr><tr><th align="right" nowrap>Autores </th><td>Pascal von Rickenbach; Roger Wattenhofer</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>Decoding Code on a Sensor Node</td></tr><tr><th align="right" nowrap>Año </th><td>2008</td></tr><tr><th align="right" nowrap>Revista / Conferencia </th><td>4th Intl Conf on Distributed Computing in Sensor Systems (DCOSS)</td></tr><tr><th align="right" nowrap>Lugar y Fecha </th><td>Santorini, Greece, June 2008.</td></tr><tr><th align="right" nowrap>Subido por </th><td>A. Garcia el 10/07/2008 a las 13:28</td></tr><tr><td colspan="2"><br><em>Resumen: </em>Wireless sensor networks come of age and start moving out of the laboratory into the field. As the number of deployments is increasing the need for an efficient and reliable code update mechanism becomes pressing. Reasons for updates are manifold ranging from fixing software bugs to retasking the whole sensor network. The scale
of deployments and the potential physical inaccessibility of individual nodes asks for a
wireless software management scheme. In this paper we present an efficient code update
strategy which utilizes the knowledge of former program versions to distribute mere incremental changes. Using a small set of instructions, a delta of minimal size is generated.
This delta is then disseminated throughout the network allowing nodes to rebuild the
new application based on their currently running code. The asymmetry of computational
power available during the process of encoding (PC) and decoding (sensor node) necessitates a careful balancing of the decoder complexity to respect the limitations of today's
sensor network hardware. We provide a seamless integration of our work into Deluge,
the standard TinyOS code dissemination protocol. The e±ciency of our approach is
evaluated by means of testbed experiments showing a significant reduction in message
complexity and thus faster updates.</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=294&t=1215721708Development of an Instrument to Measure the Perceptions of Adopting an Information Technology Innovation2008-06-22T13:17:03-07:002008-06-22T13:17:03-07:00Benbasat293/1214165823<table border="0" cellpadding="0" cellspacing="0"><tr><td width="150" align="right" valign="top"><img src="http://www.cicese.mx/~olea/numenor/tmp/vp465.jpg" style="border: 1px solid gray; border-right-width: 2px; border-bottom-width: 2px;"/></td><td width="32"> </td><td valign="top" align="left"><table border="0" cellpadding="0" cellspacing="0"><tr><th align="right" nowrap>Archivo </th><td><img src="http://numenor.cicese.mx/tpl/simple/img/icono-arch.gif" align="absmiddle" /> <strong></strong> (1.86 MB) </td></tr><tr><th align="right" nowrap>Autores </th><td>Gary C. Moore, Izak Benbasat</td></tr><tr><th align="right" nowrap>Tïtulo </th><td>Development of an Instrument to Measure the Perceptions of Adopting an Information Technology Innovation</td></tr><tr><th align="right" nowrap>Año </th><td>1991</td></tr><tr><th align="right" nowrap>Subido por </th><td>R. Cardenas el 22/06/2008 a las 13:17</td></tr></table></td><td width="32"> </td></tr></table>http://numenor.cicese.mx/?p=articulos-ver&id=293&t=1214165823