01508nas a2200157   4500008004100000245008000041210006900121300001200190520091700202100002101119700002301140700001901163700001401182700001601196856013801212       2002                        eng d00aAn Architecture for Interactive Distributed Multimedia Information Services0 aArchitecture for Interactive Distributed Multimedia Information   a 3 - 103 aIn this work, we present an architecture for interactive distributed multimedia information services. The service
consists of three basic parts, the clients, the access servers, and the content servers. Clients manage the
presentation of the requested multimedia documents, while also ensure the synchronization among various
involved media. Special policies for the synchronized presentation of multimedia documents and user
interactions management are discussed. Access servers authorize the users for legitimate use of the service,
while also provide various searching capabilities Content servers manage the transportation of multimedia
documents over a broadband network and the user interactions. The proposed architecture preserves
scalability, flexibility and modularity due to the distributed nature of the architecture, while also results in good
performance due to the dynamic allocation of resources.1 aBouras, Christos1 aKapoulas, Vaggelis1 aSpirakis, Paul1 aMoiras, D1 aOuzounis, V  uhttp://telematics.upatras.gr/telematics/publications/architecture-interactive-distributed-multimedia-information-services?language=el01305nas a2200169   4500008004100000245009300041210006900134300001500203520065900218100002100877700002300898700001900921700001400940700001600954700001500970856015000985       1999                        eng d00aOn-Demand Hypermedia/Mutimedia Service using Pre-Orcestrated Scenarios over the Internet0 aOnDemand HypermediaMutimedia Service using PreOrcestrated Scenar  a 741 - 7623 aIn this paper we present a unified approach for delivering hypermedia/multimedia
objects over broadband networks. The described service consists of several multimedia servers
and a set of functions that intend to present to the end user interactive information in real-time.
The hypermedia documents are structured using a hypermedia markup language that keeps information
of the spatiotemporal relationships among document’s media components. In order to
deal with the variant network behavior, buffering manipulation mechanisms and grading of the
transmitted media quality techniques are proposed to smooth presentation and synchronization
anomalies.1 aBouras, Christos1 aKapoulas, Vaggelis1 aSpirakis, Paul1 aMoiras, D1 aOuzounis, V1 aTatakis, A  uhttp://telematics.upatras.gr/telematics/publications/demand-hypermediamutimedia-service-using-pre-orcestrated-scenarios-over-internet?language=el01612nas a2200157   4500008004100000245010900041210006900150260002000219300001500239520097100254100002101225700002301246700001401269700001601283856015501299       1998                        eng d00aA Framework for a Distributed Information Service Using Hypermedia/Multimedia Pre-Orchestrated Scenarios0 aFramework for a Distributed Information Service Using Hypermedia  c28 - 31 October  a 226 - 2293 aReal time delivery of multimedia objects based on preorchestrated
scenarios, seems to have several difficulties
due to presentation deadlines that should be satisfied, and
network’s unpredictable behavior which may lead to synchronization
anomalies among related media streams. Beyond
these, a structural model that represents such scenarios
is required. In this paper, we present a general framework
that addresses the above mentioned issues, and we
attempt to describe a unified approach for delivering hypermedia/
multimedia objects over network connections
preserving their timing constraints. We mainly concentrate
on the study and development of a markup language that
models the presentational structure of a multimedia object
and provides primitives that assure playout synchronization
of the different media streams that compose these
hypermedia objects. Methods for keeping a constant quality
level of presentation in times of network load are discussed.1 aBouras, Christos1 aKapoulas, Vaggelis1 aMoiras, D1 aOuzounis, V  uhttp://telematics.upatras.gr/telematics/publications/framework-distributed-information-service-using-hypermediamultimedia-pre-orchestrated?language=el01193nas a2200169   4500008004100000245010000041210006900141260001100210520054100221100002100762700002300783700001900806700001400825700001600839700001500855856015300870       1998                        eng d00aImplementing spatio-temporal relations for hypermedia presentations using an HTML-like language0 aImplementing spatiotemporal relations for hypermedia presentatio  c13 May3 aHypermedia is currently the trend in delivering information composed of various
forms of media. Up to now most systems lack the ability to present the user with
hypermedia information containing various media that have specific spatio-temporal
relations. In this paper we propose and describe a model that can describe such kinds
of hypermedia presentations. The core of the model is an HTML-like language that
supports tags for the description of timing relations between the information objects
that compose a hypermedia presentation.1 aBouras, Christos1 aKapoulas, Vaggelis1 aSpirakis, Paul1 aMoiras, D1 aOuzounis, V1 aTatakis, A  uhttp://telematics.upatras.gr/telematics/publications/implementing-spatio-temporal-relations-hypermedia-presentations-using-html-language?language=el01559nas a2200193   4500008004100000245007400041210006900115260001600184300001300200520088400213100002101097700002301118700001901141700001401160700001601174700001601190700002401206856013501230       1997                        eng d00aHermes Service: Distributed Hypermedia Educational Services on Demand0 aHermes Service Distributed Hypermedia Educational Services on De  c14 - 19 Jne  a 19 - 243 aIn this paper we present a distributed HypERMEdia SERVICE
(HERMES SERVICE) which supports integrated capabilities for distance
education and learning purposes. Hermes service consists of hermes servers
and hermes browsers. The users are connected with the service using hermes
browsers and retrieve hypermedia lessons organised in thematical units. The
lessons are stored in various distributed Hermes servers which retrieve the
requested lesson and transmit it to the corresponding browser on on-demand
basis. The requested lesson is presented to the user according to a well defined
presentation scenario. The media objects are rendered in a synchronized
manner according to the spatio-temporal relationships existing among them.
Finally, special monitoring mechanism controls the state of the network and
adjusts the presentation process so as to improve presentation quality.1 aBouras, Christos1 aKapoulas, Vaggelis1 aSpirakis, Paul1 aMoiras, D1 aOuzounis, V1 aAntoniou, I1 aKarageorgopoylos, D  uhttp://telematics.upatras.gr/telematics/publications/hermes-service-distributed-hypermedia-educational-services-demand?language=el01071nas a2200169   4500008004100000245006100041210005900102260001700161300001300178520050300191100002100694700001900715700001400734700001600748700001600764856012100780       1997                        eng d00aHY-MOST: HYpermedia MOdel for Synchronised presenTations0 aHYMOST HYpermedia MOdel for Synchronised presenTations  c6 - 11 April  a 18 - 233 aA brief abstract. In this paper we present a new model for
hypermedia presentations. This model is based on an
HTML-like language which provides the necessary modules
for the intermedia synchronisation of the inline media that
comprise the hypermedia document. The model also enables
a distributed approach in the storage of the hypermedia
documents. Additionally, it is capable of incorporating the
necessary protocols needed for the real-time delivery of
continuous media such as audio and video.1 aBouras, Christos1 aSpirakis, Paul1 aMoiras, D1 aOuzounis, V1 aAntoniou, I  uhttp://telematics.upatras.gr/telematics/publications/hy-most-hypermedia-model-synchronised-presentations?language=el01637nas a2200181   4500008004100000245006800041210006600109260001800175300001500193520101000208100002101218700002301239700001901262700001401281700001601295700001501311856012901326       1996                        eng d00aOn-Demand Hypermedia/Multimedia Service over Broadband Networks0 aOnDemand HypermediaMultimedia Service over Broadband Networks  c6 - 9  August  a 224 - 2313 aIn this paper we present a unied approach for de-
livering hypermedia/multimedia objects over broadband
networks. Documents are stored in various multimedia
servers, while the inline data may reside in their own
media servers, attached to the multimedia servers. The
described service consists of several multimedia servers
and a set of functions that intend to present to the
end user interactive information in real-time. Users
interact with the service requesting multimedia docu-
ments on demand. Various media streams are trans-
mitted over dierent parallel connections according to
their transmission requirements. The hypermedia doc-
uments are structured using a hypermedia markup lan-
guage that keeps information of the spatiotemporal re-
lationships among document's media components.
In order to deal with the variant network behavior,
buering manipulation mechanisms and grading of the
transmitted media quality techniques are proposed to
smooth presentation and synchronization anomalies.1 aBouras, Christos1 aKapoulas, Vaggelis1 aSpirakis, Paul1 aMoiras, D1 aOuzounis, V1 aTatakis, A  uhttp://telematics.upatras.gr/telematics/publications/demand-hypermediamultimedia-service-over-broadband-networks?language=el