Cloud computing is pervasive in our daily life. For instance, I usually use Google¡¦s GMail to receive e-mail, Google Document to edit documents online and Google Calendar to make my daily schedule. We can say that Google provides a ¡§Platform as a Service (PaaS)¡¨, which delivers a computing platform as a service, and the platform sustaining lots of cloud applications such as I mentioned above. However, the cloud computing platform of Google is private: we cannot trace its source code and make cloud applications on it! Fortunately, there¡¦s an open source project supported by Apache named ¡§Hadoop¡¨, which has a distributed file system which is very like Google File System (GFS) called ¡§Hadoop distributed file system (HDFS)¡¨. In order to observe the properties of HDFS, we design and implement a HDFS-based FTP server system called FTP-ON-HDFS system, say, a FTP server whose storage is HDFS. There are a web-console for FTP administrator, a FreeRADIUS server and a MySQL database for user authentication, a NameNode daemon on its machine, a SecondaryNameNode on its machine and five DataNode daemons and on five different machines in FTP-ON-HDFS system. Our FTP-ON-HDFS system can tune two QoS parameters: ¡§data block size¡¨ and ¡§data replication¡¨. Then, we tuned ¡§data block size¡¨ and ¡§data replication¡¨ in our system and compared its performance with Hadoop File System (FS) shell command and normal vsftpd. On the other hand, FUSE can mount HDFS from remote cluster to local machine, and make use of the permission of the local machine to manage HDFS. So, we compared the performance of FUSE with HDFS (FUSE-DFS) and our FTP-ON-HDFS system.

Submitted by Kamila Costa (kamilavasconceloscosta@gmail.com) on 2015-07-23T19:11:45Z No. of bitstreams: 2 Dissertação - Luis A P Batista.pdf: 26709847 bytes, checksum: 825021f874056d390e50bc5fa98b137a (MD5) Capa.pdf: 223609 bytes, checksum: 8831f2d4b1dd1604ea6ed1e33e2a0bf6 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-07-27T15:09:52Z (GMT) No. of bitstreams: 2 Dissertação - Luis A P Batista.pdf: 26709847 bytes, checksum: 825021f874056d390e50bc5fa98b137a (MD5) Capa.pdf: 223609 bytes, checksum: 8831f2d4b1dd1604ea6ed1e33e2a0bf6 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-07-27T15:17:55Z (GMT) No. of bitstreams: 2 Dissertação - Luis A P Batista.pdf: 26709847 bytes, checksum: 825021f874056d390e50bc5fa98b137a (MD5) Capa.pdf: 223609 bytes, checksum: 8831f2d4b1dd1604ea6ed1e33e2a0bf6 (MD5) / Made available in DSpace on 2015-07-27T15:17:55Z (GMT). No. of bitstreams: 2 Dissertação - Luis A P Batista.pdf: 26709847 bytes, checksum: 825021f874056d390e50bc5fa98b137a (MD5) Capa.pdf: 223609 bytes, checksum: 8831f2d4b1dd1604ea6ed1e33e2a0bf6 (MD5) Previous issue date: 2010-06-01 / Não Informada / This thesis is intended to look into the FTP (File Transfer Protocol) system on the News Broadcasting production from stations belonging to Rede Amazônica (TV Amazonas, TV Rondônia, TV Acre, TV Roraima and TV Amapá), at the Central de Jornalismo (journalism Center) located in the capital of the State of Amazonas and its effects on the routine of the community from the municipality of Manacapuru, which has become not only consumer of information, but also its protector. As a theoretical reference underlying Castells’ (1999, 2001, 2003) approaches, with the theory of network society through access to information; Dizard (2000) with the theory of old and new medias, analyzed on a time-space scale, in the context of the Amazon Region; and Milanesi (1978) with a reflection regarding the impact influence of old and new medias on peripheral areas, in regards to the existence of a central area. The research, an exploratory-descriptive case study, comprises communication as a result of a historical process which, in order to meet the society’s constantly changing demands, produces at the same time, through science, new technologies. The applied investigative techniques consist of document research with quantitative and qualitative data collection survey, by using resources such as questionnaires, semistructured interviews, semi-structured and participative observation. Unpublished and standardized data collected in this study aimed at contributing to the successful scientific knowledge production regarding the Amazon reality, as there is an expectation the results may be used as reference to other areas and investigations. / Esta dissertação investiga o efeito do sistema FTP (File Transfer Protocol ou Protocolo de Transferência de Arquivo) no processo de produção do telejornalismo das emissoras da Rede Amazônica (TV Amazonas, TV Rondônia, TV Acre, TV Roraima e TV Amapá), a partir da Central de Jornalismo sediada na capital do estado no Amazonas e seus efeitos no cotidiano da comunidade do município de Manacapuru, que passou a ser não apenas consumidora de informação, mas também produtora dela. Como referencial teórico embasa a reflexão nas abordagens de Castells (1999, 2001, 2003) com a teoria da sociedade em rede por meio do acesso à informação; Dizard (2000) com a teoria das velhas e novas mídias, analisadas, em uma escala tempo-espaço, ao contexto da região amazônica; e Milanesi (1978) com a reflexão acerca da influência do impacto das velhas e novas mídias em áreas periféricas, em relação à existência de uma área central. A pesquisa, um estudo de caso de caráter exploratório-descritivo, compreende a comunicação como resultado de um processo histórico que para atender as demandas da sociedade em constante transformação, produz em paralelo, por meio da ciência, novas tecnologias. As técnicas de investigação empregadas consistem em pesquisa documental com levantamento de dados quantitativos e qualitativos, pautadas no recurso de questionários, entrevistas semi-estruturadas, observação semi-estruturada e participante. Os dados inéditos levantados e sistematizados neste estudo tiveram por objetivo contribuir com o processo de produção do conhecimento científico acerca da realidade amazônica, na expectativa dos resultados virem a servir como referência para outras áreas e investigações.