maanantaina 5. toukokuuta 2008
Clase 5. de Mayo
Principales indicadores del mercado relacionado con Internet en España (1 hora). (Josep Solé Pareta)
The subject of this session was something already very familiar for me, as I'm currently studying the same subject in the course Sociedad de Información II by Antonio Alabau. Fortunately this session took a much more general view focusing on the current plans and actions on the different levels of Europe, Spain the autonomical communities and local scale.
The methodology of the session consisted mainly of case examples and some statistics (more so in the part of Josep Pareta). On the time scale we focused mainly on the currently implemented strategies and programmes and their effects.
This was also an important session in the sense that it provided for what should be used as a referencial anchor for our own expocition on the subject of IS strategies in the autonomies of Madrid, Catalonia and Valencia.
The main important strategies are the european union's i2010 strategy and Spains Plan Avanza witch is actually part of a larger consept called ingenio2010. i2010 especially and the spanish plan Avanza in a smaller degree are actually very familiar for me from the above mentioned course in addition to others.
I don't it that important for me to familiarize myself with the smaller-scale local programmes and strategies (for the exception of Valencia), but they offer a good reference for analyzing the Finnish strategy (Finland being by its population roughly the size of Barcelona). The Spanish Plan Avanza on the other hand is of course something on a totally different scale and would in fact consititute roughly to such a project as where the nordic countries would establish a shared higher scale IS strategy.
sunnuntaina 4. toukokuuta 2008
Resumen del plan Avantic
Aqui unas cosas que dice el presidente de la generalitat en su presentación
Avantic consolidará de 2004 a 2010 la acción pública del Gobierno Valenciano en materia de telecomunicaciones que se concreta en dos planes: el Plan Estratégico Valenciano de Telecomunicaciones Avanzadas (PEVTA) y el Plan Estratégico para consolidación de la Sociedad Tecnológica y del Conocimiento en la Comunidad Valenciana (PETIC)
El PEVTA está dirigido a planificar la convergencia de las redes de alta velocidad valencianas con las nacionales y las europeas, así como a facilitar los servicios de telecomunicación entre la Administración y los ciudadanos. De otro lado, desde el PETIC se trabaja para mejorar la competitividad de las empresas, la eficiencia de la Administración y el acceso de las tecnologías a toda la sociedad.
El presupuesto total de Avantic para los próximos seis años es de 2.741,05 millones de euros, de los que 1.111,45 millones están destinados a PEVTA, 240,50 millones a PETIC, y el resto es para programas horizontales. En su financiación participan además de la Generalitat Valenciana, el Gobierno Central, los fondos europeos, la administración local y la iniciativa privada.
- Presentación avantic del Molt Honorable Senyor President de la Generalitat.
Los puntos importantes en este es el temporada del plan actual, la división en dos planes y sus contenidos a nivel general y el presupuesto, así que son cosas que tenemos que comparar con el grupo por el trabajo. Los planes anteriores eran PEMAV (1996-1999) y Moderniza (2000-2003). Esos serían importantes para analizar más profundamente de lo que comprende el plan actual, pero según el objetivo del proyecto este será más utile de analizar por ejemplo como influenza el plan nacional a ellos de los ayuntamientos.
Avantic a lo largo de estos años de trabajo ha finalizado 10 proyectos y en la actualidad está llevando a cabo 12 programas, con 27 líneas de actuación que se concretan en 53 proyectos
-Presentación avantic del Honorable Senyor Conseller de Justicia y Administraciones Públicas.
Los proyectos están pues divididos en los programas como sigue
- Plan Estratégico Valenciano de Telecomunicaciones Avanzadas (PEVTA)
PROGRAMA ALTA VELOCIDAD VALENCIANA
PROGRAMA DE TELECOMUNICACIONES CORPORATIVAS AVANZADAS
PROGRAMA DE SERVICIOS DE TELECOMUNICACIONES AVANZADAS
PROGRAMA DE CALIDAD DE LOS SERVICIOS PÚBLICOS
- Plan Estratégico para consolidación de la Sociedad Tecnológica y del Conocimiento en la Comunidad Valenciana (PETIC)
PROGRAMA CIUDADANOS
PROGRAMA EMPRESAS
PROGRAMA ADMINISTRACIÓN
PROGRAMA I+D+I EN TIC
PROGRAMA DE GESTIÓN DEL CONOCIMIENTO
PROGRAMA INSTRUMENTOS DE AVANTIC
PROGRAMA INTERTIC
PROGRAMA DE GRANDES EVENTOS
La proximas etapas del proyecto podrían ser de analizar los tres planes (de Madrid, Cataluña y Valencia) entre si o de analizar los planes particulares al respecto con el plan nacional, lo que ya ha resumado Sergio en su blog.
perjantaina 2. toukokuuta 2008
Clase 28. de abril
We continued the theme of infrastructure from a less technical perspective than in the previous sessions by Vicente Casares. We began analyzing the internet architecture from an organizational viewpoint by familiarizing ourselves with the work of IANA (Internet Assigned Numbers Authority), responsible for Domain Names, IP addressing and protocol assignment. We also discussed the internet architecture as autonomous system and three-tier hierarchical organization and the meaning of internet exchange points (IXP's).
Next we discussed the architecture from a more technical point of view. We saw some of the high level design principles as well as a brief view into how the design has evolved through time. Then after a short break we saw a very interesting consept called the fossilized architecture. This signifies that there are certain notable technologies, namely IP, TCP and BGP that can nomore be dismissed from the technical architecture that lies behind internet. On the other hand there are also some high-penetration technologies that should be questioned such as NAT, IPSec, Firewalls and MPLS as they risk the seamless interoperation of the set of technologies that appear in the world of internet (E.g. NAT doesn't work well with IPSec etc.).
We also discussed the principle problems in today's internet listed as follows
- security
- fragility
- reliability
- mobile terminal support
- alternative data-type support
- support for heavy flows
- service quality guarantees
- scalability
- substainble models for billing
Overall, this lecture offered a nice general view to the structure of the sometimes chaotically described internet. As a whole we looked at how the basic underlying technologies have maintained their roles untill today and what kind of evolutionary changes might be expected on the subject.
maanantaina 21. huhtikuuta 2008
Clase 21. de abril.
This session was a continuation to the last session. We picked up from where we left by covering the last two technologies of the last session's programme: WIMAX and WLAN.
From WIMAX (OFDM) we covered the packet-stucture and the MAC layer including the 4+1 service types for QOS. Then we continued to WLAN of which we saw the OSI-7 layered technical architecture, the MAC layer and the packet management solution (DIFS, PIFS and SIFS). All of this was for me recapitulation of what I had just went through in the fall's Redes Publicas I course.
Next we stepped into today's actual subject - Mobility management (Which actually includes the above mentioned packet management solution). In a short time we covered quite well the architecture used in tracking mobile stations used in GSM. We also skimmed through very quickly the micro- and macro-mobility subject in the case of all-IP/UMTS mobility management. Finally we discussed the general idea of cellular IP.
torstaina 17. huhtikuuta 2008
Clase 14. de abril
In this lecture we stepped into a new theme - Infrastructure. The first lecture by Vicente Casares of wireless internet access was very different in nature. As where earlier the themes have been analyzed from various angles such as sociological and historical, this theme on its part was approached from a very technical perspective. This is quite appropriate because of the inherently technical nature of the subject but on the other hand this is also certainly familiar content from other courses such as Redes Publicas I by Vicente Casares. Still, the content of the lecture is challenging and as such, recapitulation is highly valued. On the other hand the lecture would not have served in an other manner as a very wide area of content was skimmed through with an impressive pace.
The technologies that were discussed in this class were the following
- GPRS (General Packet Radio Service)
- UMTS (Universal Mobile Telecommunications System)
- HSPA (High-Speed Packet Access)
- WIMAX (World-wide Interoprability for Microwave Access)
- WLAN (Wireless LAN)
Clase 11. de abril
The second lecture on the theme of internet and society was the first one held in our university. The subject by José Ramon Vidal was the legal framework of the information society. This was for me an old subject from the course Information Society II by Antonio Alabau. The way I see it, it is very important for an engineer to know about the basics of the most important laws that apply for the electronic commerce and information society services, for without such knowledge you can never really achieve understanding of why some aspects of services are done as they are.
This subject was approached by mr. Vidal from three subthemes. The first, the legal regimen includes the following three legislations:
- The law on electronic commerce and information society services
- The law on electroic signature
- The legislation on commercial contracts
The intellectual property legislation, namely the copyright system is a problematic and controvercial theme because of the regional differences around the world. Fortunately an individual engineer does not in my oppinion need an overly detailed expertise on this area, but it is important to know the basics.
The final subject, the proteccion of personal data on the other hand is a very important to know on both national and international level. The spanish legislation on the subject is namely from the year 1999. Personally I should familiarize myself with the finnish legislation but at the EU - USA scale, that was covered is something worth knowing.
When covering the subject of legislation it should always be noted, in addition to the actual content of the legislation, how the legislation is supervised and what kind of sanctions are implemented. Additionally a quite challenging aspect, especially in the area of electronic services, is how the legislation works on an overall international scale.
Clase, 7. de Abril
This was the first of three lectures about internet and society. The class consisted of themes such as negotiation models, a modular view of web 2.0 meaning e.g. widgets and mashups. Also many old subjects were reassessed such as social networks (myspace, facebook etc.), weblogs and wikies and web OS's (e.g. Google apps). The class ended with a view into how services are offered in Spain and Europe, which was done by reviewing many statistics that are generally used to measure the state of the Information Society. As such, these statistics as well as many of the currently assessed subjects were familiar to me from the ongoing course named Information Society II.
The part that was really interesting about this lecture was the analytical viewpoint into how the service implementation develops in time. A very important part in analysing the success of a certain service or phenomenon is its degree of implementation, which in turn opens up for the possibility of analysing how the service is currently growing or diminishing. Also important is the aspect of what types of cervices were used before and if new web 2.0 types of cervices have superseded these classical services or perhaps supplemented its use. This kind of analytical assesment helps to better understand how electronic services are currently evolving and which technologies may enable for the emergence of new next generation applications and services.
One additional viewpoint in my oppinion and perhaps the most important of all in analysing this evolution is in the thorough understanding of the basic customer needs behind offered services. Next generation eServices are not only oriented towards the needs that the internet has traditionally been used for (such as information retrieval, communication and entertainment) but also for example in supplementing some other types of services such as television and newspapers.
perjantaina 7. maaliskuuta 2008
Clase, 7. de Marzo
Servicios de valor añadido Multimedia (A. Fumero, J. Salvachua)This lecture was the finale on the area of web 2.0 applications and services before a nearly month-long period of vacations. Mr Fumero began the session with an overview of a subject that I find quite interesting, that of identities. His part also included virtual worlds, mainly covering second life. Salvachúa on his part held a lecture about much more technical subjects starting from mobile web 2.0 services and reaching some of the current important protocols conserning internet multimedia services.
Identities are a very interesting subject in the development of web- and other types of electronic services because they provide for means to increase usability by personalizing services. I believe that most of today's identification schemes are still built mainly on the theme of user access in contrast to personalization and that much untapped potential could be reached. The technical scheme under today's identities/profiles offer for an interesting study-subject from the usability engineering point of view. Second life was also covered as an example of today's more advanced virtual world applications. It was thus interesting to see what type of technical/conseptual infrastructure lies under such services. I, myself once was meaning to try out second life out of interest to the overall phenomenon but as the "game" was lagging quite a lot and I even managed to get myself stuck in a way in the very beginning of the introductory area, that experiment remained short lived... for now at least.
The second part by mr. Salvachúa was a very different type of lecture as the subject covered namely some of the more important protocols that have been introduced over IP as to better facilitate the growingly demanding and diverse type of messaging and data-transfer that are used over internet and WWW. The technologies that were covered were as follows.
- RTP / Real-time Transfer Protocol (works over UDP)
- SIP / Session Initiation Protocol (analogy with HTTP)
- XMPP / eXtensible Messaging and Presence Protocol (also known as Jabber, evolution of SIP with xml)
Clase, 3. de Marzo
Comunidades online y redes sociales. Web semantica y
Folksonomías (J. Salvachúa, A. Fumero)This lecture'a first part was about an interesting and very
essential part of the web 2.0 phenomenon. The social networks
and online communities are what the general public see and relate
to conserning the development of WWW.The development of web technologies is a very small part of web
2.0 as the more interesting aspect is surely that of the sociological
influences around how we utilize WWW nowadays. Antonio Fumero
introduced us to a wide range of different social networks thus
offering a comprehensive overview of the area as a whole.An important aspect of the area is also the division of different
social networks by their purpose of use and the notion of how
these uses are slowly merging. I, for example only use Facebook
very actively, but as the developed platform offers many additional
applications and posibilities I may use it for a wider range of needs.The second part of the lecture was about the semantic web. As
mentioned before, this is a quite familiar subject for me. I even
have my name on a paper from the research about Semantic Web
Services. If interested, you can read on the subject from:
http://www.cs.hut.fi/u/sto/B158.pdf.I won't go further into the subject. The basic things were covered:
some history, RDF, ontologies etc.
Clase, 29 de febrero
Fundamentos Arquitectónicos de la Web 2.0
(J. Quemada, J. Salvachua)
This lecture was about the technical architecture of the Web.
The Web was originally based on the following three main
technological components
- URI (Universal Resource Indicator)
- HTTP (Hyper Text Transfer Protocol)
- HTML (Hyper Text Markup Language)
HTTP in its part is also in its part evolving although maintaining its base functionality relatively untouched. Some of the different methods were discussed including get and post. The interface of HTTP is generally called CRUD (Create, Read, Update and Delete). One of the most advanced features of today in HTTP 1.1 is the pipelined transaccions -feature. The authentification in HTTP was also covered and SHTTP as a drastic improvement in security as for its use of sockets.
Finally we entered the area of web application architectures and especifically Roy Fielding's REST (REpresetentational State Transfer), which is presented as the superior architecture of today for generating advanced web applications. REST is introduced as being scalable and interoperable with many (all?) of today's key-elements including AJAX.
Clase, 25. de febrero
Creación de contenido y derechos de autor (A. Fumero)
Wikis and Wikipedia, C. Barcenilla)
The web 2.0 services and applications theme continued by the
lectures about content creation. The first part mainly
grasped the concept of social software and the importance of
knowledge over technology. An interesting aspect on the
social content creation is how different types of social
middleware affect the actual knowledge that is being created
over the application. As a general rule the application will
have a web platform that offers the clients a specified
environment for delivering information/content.
An other interesting theme on the first part was the briefly
visited subject copyright, specifically in this context of
social software. What different types of rights on content
and different combinations was introduced.
Also the subject of Semantic web was touched. This is a
subject that I'm very familiar with as I've done my
candidate's thesis partly on the subject and also spent
one summer wroking on a research on Semantic web services.
I will however not cover this subject on this blog other
than by agreeing with the professor in saying that the
Semantic web will probably see the light of day in its
originally intended content. Still the research on it has
and will continue influencing the development of the future
of web and web applications in its own way.
The second part of the lecture on Wikis and the Wikipedia
did not offer much new information for me personally. It is
true that the different wikis in the world and especifically
the Wikipedia are a powerful and interesting pehnomena in
today's world of web. I myself tend to turn to wikipedia in
every possible question of my life and I've also used wikis
as part of some courses in my studies in Finland, including
the last summer's research on Semantic web services.
Clase 22. de febrero
We continued to the determination of Web 2.0 and analysing its nature as not only a technological platform for new types of services but also as a manifestation of social networking and the significance of information. This led to everybody's favourite subject and biggest potential conserning the Web 2.0 - the collective intelligence or "Wisdom of Crowds" (the book by James Surowiecki, 2005).
The weblogs or Blogosphere was represented as an important part of the Web 2.0 after which we returned to the subject of the long tail. The long tail is a very essential consept conserning the services delivered in the world of web 2.0 and is based on the power of the so called long tail, the low-demand needs of the users. One could ask himself what the point is with the neverending streams of junkmail in the world. Does anyone really need this much "potential"?, Who buys this stuff?". Even if only one in ten thousand consumers really would buy viagra from a shadowy web distributor, it's enough to make the seller rich. The power lies in the extremely easy, although annoying distribution of the junkmail. Nowadays you can really find pretty much anything from the internet. Most of the services may not have but a handfull of users, but together they make up the very long and potent long tail.
Finally Wikis were introduced as an extremely interesting phenomenon and an occurrence of the aforementioned collective intelligence - User generated content.
The second part of the lecture by Joaquín Salvachúa continued on the subject of web 2.0 and focusing on its architecural. The basic technological elements were presented briefly alongside the client-server consept.
An important point in the architecture of today's web 2.0 in its random nature. As a whole it seems to be a hectic bazar of different technologies, tools and particularly services. Still it succeeds in offering a functional composite of services capable of satisfying virtually any sort of a need that a user might have. Salvachúa presents the comparison of an architecturally built cathedral as opposed to an organic corall reef where new elements are randomly born and sometimes grow to cover older parts. This is a remarkably similar charasteristic to the development of the web 2.0 environment where newer more developed services sometimes succeed to eat away the clients of older services that might have been relatively popular at their time. To maintain success as a popular web-service or application, the service has to grow and upgrade its content, sometimes even delivering change only to keep up the interest of the clients.
An other interesting notion is that a charasteristic trait of the new web 2.0 services is its absence of traditional client-server based architecture as specifically in collaborative services some of the clients take on different roles including that of content provider.
torstaina 6. maaliskuuta 2008
Introduction
This blog is used for two targets. First, after each lecture I am to write a short summary and my thoughts on the presented subjects and secondly there will be a course assignment that will be done in groups of three and for which the information is shared using this blog and the course's wiki. With proper approval, I shall write the lecture summaries in english and see about the matter conserning the group assignment depending on the appointed group. Writing spanish is not a problem as such, but english is usually still for me a lot less clumsy.
As for my tardy discovery of the need for the lecture summaries, I've begun writing this blog as four of the lectures have already passed (not including the first lecture which was merely an introduction to the course and the methods and tools that are used with it). The summaries for the earlier lectures will be written in retrospect when I have time.
The scope of this course as of now strikes as being quite diverse due to the sheer number of lecturers and subjects. While I generally do fancy the refreshing novelty of videoconference-shared sessions and especially the use of such promising tools as wikis, the varying scope does pose some question about the consistency of the course's subjects.
I have personally found the use of a wiki to be a very potent solution for research done in teams, but I don't really see the need for making seperate blogs using other services as it would be fairly easy to maintain a blog-like diary or such inside the wiki itself.