Um servidor de dados multimÃdia para sistemas virtuais de ensino

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

The biggest differential of the most sophisticated LMS (Learning Management System) is that they provide a greater and better proximity and facility of understanding the managed and available content to the student or apprentice. For this, the use of multimedia resources such as audio, images, videos and virtual reality objects, inserted in the content that is offered by the LMS, allows a more pleasant learning, as well as turning the system more appealing to the students that use the LMS, which supports such resources. Due to a great difficulty to manipulate, insert and recover such multimedia and virtual reality objects in the content managed through LMS there is a need of specifying and implementing a Data Server that could facilitate such manipulation integrated to a LMS. The main objective of this work is to develop a Data Server to manipulate multimedia and virtual reality objects inside a LMS; in this case the LMS chosen was AMADEUS-MM. This Server has the main purpose of managing the multimedia content in a virtual learning environment, with peculiar efficiency in the storage and in the transfer of the multimedia data (image, audio, and video) and virtual reality worlds. The Multimedia Data Server provides a data structure to the administration of the multimedia content in a virtual learning environment, as well as supplies components (storage, business and interface) to give support to the management of multimedia content (images, audios and videos) and virtual reality worlds (vrml e x3d). Its architecture allows the integration with distance learning platforms through the exchange of XML messages so that such platforms can use, in a transparent way, the services that the Multimedia Data Server provides. For this, a study of each type of multimedia and virtual reality objects and how these objects are storaged in a database was carried out. A group of prototypes were elaborated and implemented, one for each form of studied storage and a group of evaluation based in performance engineering was done, so that a better approach to the storage and recovery of these multimedia objects for teaching through distance environment could be defined. It was also proposed an integration model between the Server and distance learning platforms, so that those platforms can take advantage of the services, which are offered in a transparent way. This server in this research is part of a larger project called Amadeus-MM Project, whose objective is to develop a learning virtual environment based on a pedagogic purposal centred in mediation and evaluation processes, coordinated by the Professors Fernando Fonseca and Alex Sandro Gomes (Cin/UFPE)

ASSUNTO(S)

lms amadeus-mm ciencia da computacao gestÃo de conteÃdo objetos multimÃdia multimidia objects amadeus-mm objetos de realidade virtual virtual reality objects content management distance education lms educaÃÃo a distÃncia

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