Thesis (M.S.)--Rochester Institute of Technology, 1991. / Typescript. Includes bibliographical references (leaves 54-56).

No description available.

Big data is a developing term that describes any large amount of structured and unstructured data that has the potential to be mined for information. To store this type of large amounts of data, cloud storage systems are necessary. These cloud storage systems are developed such that they are capable of keeping the data accessible and available to the users over a network. To store big data new platforms are required. Some of the popular big data platforms are Mongo, Cassandra and Hadoop. In this thesis we used Cassandra database system because it is a distributed database and also open source. Cassandra’s architecture is master less ring design that is easy to setup and easy to maintain. Apache Cassandra is a highly scalable distributed database designed to handle big data management with linear scalable and seamless multiple data center deployment. It is a NoSQL database system which allow schema free tables so that a data item could have a variable set of columns unlike in relational databases. Cassandra provides with high scalability with no single point of failure. For the past few years’ container based virtualization has been evolving rapidly. Container based virtualization such as LXC have been focused here. Linux Containers (LXC) is an operating system level virtualization method for running multiple isolated Linux systems on a single control host. It does not resemble a virtual machine, but provides a virtual environment that has its own CPU, memory, network, etc. space and the resource control mechanism. In this thesis work performance of Apache Cassandra database has been analyzed between bare metal and Linux Containers(LXC). A three node Cassandra cluster has been created on both bare metal and Linux container. Assuming one node as seed and Cassandra stress utility tool has been used to test the load of Cassandra cluster. The performance of Cassandra cluster database has been evaluated in bare metal and Linux Container which is the goal of this thesis work. Linux containers (LXC) are deployed in all the servers. A three node Cassandra database cluster has been created in these servers and also in Linux Container(LXC). Port forwarding is the technique used here for making communication between Cassandra in LXC which is the goal of this thesis work. The performance metrics which determine the performance of Cassandra cluster database are selected according to it. The network configuration parameters are changed according to the behavior of Cassandra. By doing changes in these parameters Cassandra starts running according to the required configuration, after this Cassandra cluster performance will be analyzed. This is done with different write, read and mixed load operations and compared with Cassandra cluster performance on bare metal. The results of the thesis show an analysis of measurements of performance metrics like CPU utilization, Disk throughput and latency while running on Cassandra cluster in both bare metal and Linux Containers. A quantitative and statistical analysis of performance of Cassandra cluster is compared. The physical resources utilized by the Cassandra database on native bare metal and Linux Containers (LXC) is similar. According to the results, CPU utilization is more for Cassandra database in Linux Containers. Disk throughput is also more in Linux Containers except in the case of 66% load write operation. Bare metal has less latency compared to Linux Containers in all the scenarios.

Biosecurity is one of the main mechanisms used to protect and mitigate the introduction of non-indigenous species. Effective biosecurity requires a knowledge and understanding of pathways and vectors along which invasion can occur. This study contributes to our knowledge and understanding of possible biosecurity risk factors in the Antarctic by identifying potential vectors for invasive species in the pathway between New Zealand and the Antarctic. The Antarctic has important indigenous terrestrial and marine, plant and animal species, all of which contribute to the food chain in Antarctica and the Southern Ocean. This study seeks to contribute some baseline data about pathways and vectors between the two regions and the implications for the biosecurity of both. An assessment of some of the risks associated with human activities within the Antarctic region, including the traffic of people and goods to and from the area, are the focus of this thesis. Current biosecurity practices with regard to personnel, shipping containers, and fresh produce are examined and where appropriate, recommendations to alleviate any detected risks are made. The results of the research indicate a significant volume of seed and plant material being unintentionally transported to Antarctica. The most striking finding was the presence of seeds in new clothes, which have previously been assumed not to be vectors. The presence of seeds in soil samples in Antarctica suggests that seeds have probably already been transported to Antarctica. Presently the climate in Scott Base seems to prevent non-indigenous species from becoming established. However, with the increases in temperature being experienced in Antarctica, this may not always be the case, therefore greater attention to biosecurity legislation and its implementation is required.

No description available.

Thesis (M.S. in Management)--Naval Postgraduate School, March 1992. / Thesis Advisors: Brown, David G. ; McMasters, Alan W. "March 1992." Includes bibliographical references (p. 107-110). Also available in print.

Thesis (M.S.)--Rochester Institute of Technology, 1997. / Typescript. Includes bibliographical references (leaves 43-44).

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnologico / Made available in DSpace on 2016-01-08T21:18:32Z (GMT). No. of bitstreams: 0 Previous issue date: 1996 / Baseado no potencial exportador de Santa Catarina, o estudo objetivou proporcionar uma contribuição ao setor de Transporte Multimodal. Identificou os atributos influentes e mais importante aos interesses individuais dos exportadores e elaborou uma análie; minuciosa do nível de serviço logístico. O processo de compreensão da estrutura de decisão dos diversos exportadores envolvidos no estudo, indicou o emprego de Modelos Comportamentais. Estes modelos foram municiados pelos dados obtidos da técnica de coleta dados denominada de Técnica de Preferência Declarada (Stated Preference). Através dos resultados, cada setor industrial exportador, demonstrou suas prioridades a serem atendidas numa futura reestruturação do transporte em nosso País.

Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Exatas, Departamento de Ciência Da Computação, 2016. / Submitted by Camila Duarte (camiladias@bce.unb.br) on 2017-01-24T17:45:06Z No. of bitstreams: 1 2016_MarceloCerqueiradeAbranches.pdf: 4134362 bytes, checksum: 595018c254e1e6f214a6a6ea70481794 (MD5) / Approved for entry into archive by Raquel Viana(raquelviana@bce.unb.br) on 2017-03-13T17:41:50Z (GMT) No. of bitstreams: 1 2016_MarceloCerqueiradeAbranches.pdf: 4134362 bytes, checksum: 595018c254e1e6f214a6a6ea70481794 (MD5) / Made available in DSpace on 2017-03-13T17:41:50Z (GMT). No. of bitstreams: 1 2016_MarceloCerqueiradeAbranches.pdf: 4134362 bytes, checksum: 595018c254e1e6f214a6a6ea70481794 (MD5) / Este trabalho propõe uma arquitetura de computação em nuvem baseada em containers e um algoritmo de auto elasticidade. O algoritmo promove a otimização do processamento das requisições por meio da alocação eficiente do número de containers para alcançar tempos esperados de resposta no processamento de requisições. Para avaliar arquitetura proposta foi utilizada uma carga de trabalho caracterizada com base em uma série temporal real resultante das requisições de um sistema Web da Controladoria Geral da União (CGU). O sistema foi submetido a diferentes testes de carga e os resultados mostram que a solução proposta apresenta um forte potencial dado que consegue cumprir os requerimentos de desempenho alocando containers de forma mais eficiente do que outras propostas. / This work proposes a cloud computing architecture based on containers and an auto elasticity algorithm. The algorithm promotes the optimization of request processing by efficiently allocating the number of containers to achieve expected response times in web requests. To evaluate the proposed architecture, a workload was used based on a real time series resulting from the requests of a Web System of Controladoria Geral da União. The system was tested with different loads and the results show that the proposed solution has a strong potential since it can meet the performance requirements by allocating containers more efficiently than other related proposals.

Seminario para optar al grado de Ingeniero Comercial, Mención Administración de Empresas / No autorizada por los autores para ser publicada a texto completo / El presente trabajo tiene como objetivo desarrollar el plan de negocios para la empresa Boxc que pretende incorporar, en su modelo negocio, la creación de tiendas de conveniencia mediante la utilización de containers que son transformados para estos fines. Para implementar estas tiendas o “C-stores” Boxc ha usado de respaldo una marca importante que es OK Market, por lo que mediante una franquicia de ésta, la empresa pretende administrar sus locales facilitando tareas importantes como lo son la logística y el posicionamiento ya establecido por esta gran cadena de tiendas de conveniencia. Dentro de las principales oportunidades que presenta la industria de las tiendas de conveniencia en nuestro país, podemos rescatar principalmente que el desarrollo que ha tenido el país ha cambiado a las personas y sus estilos de vida, donde factores como la inserción laboral femenina y los mayores tiempos de distancia de los hogares al trabajo, han causado que las personas cada vez tengan menos tiempo para permanecer y compartir en sus hogares junto a sus familias. En este sentido ingresan las tiendas de conveniencia, permitiéndoles a las personas realizar sus compras de una manera rápida, cómoda y de forma sencilla. La principal fortaleza que posee Boxc al operar estas tiendas con containers radica en la posibilidad de instalarse en lugares en donde el formato tradicional no puede acceder, a un costo mucho menor que un establecimiento normal y con una gran capacidad de adaptación al lugar en el que se requiere funcionar. Boxc deberá competir en base a diferenciación. Efectivamente la empresa está siendo diferente al utilizar esta nueva configuración de tiendas que pueden ser instaladas en lugares en los que la competencia no se encuentra. Además es importante ofrecer una variedad de productos que estén centrados en la calidad, ya que el consumidor chileno está cada vez más exigente y por lo mismo busca productos que cumplan con sus expectativas. También es clave la atención hacia los clientes, por lo mismo Boxc le dará alta relevancia a la preparación de sus trabajadores, para que entreguen un servicio de atención amable y cálido hacia el cliente, de manera que este vuelva a comprar en nuestras tiendas. Para el plan de implantación se especificaron los montos requeridos, las fechas y el financiamiento que espera recibir la compañía para la apertura de 6 tiendas para el año 2013 y lograr en 5 años tener en funcionamiento 30 locales. Además de lo anterior se hizo un análisis financiero con un horizonte a 5 años, estimando los ingresos y costos de operar estas tiendas, el pago por el concepto de la franquicia a OK Market y otros gastos en los que tendría que incurrir la empresa, lo que permite visualizar el atractivo de dar marcha a este emprendimiento.