Orientador: Yuzo Iano / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação / Made available in DSpace on 2018-08-27T10:10:17Z (GMT). No. of bitstreams: 1 Caetano_DiogoGara_D.pdf: 7750727 bytes, checksum: ce4a919f974ece2e4f79e734c8c7fd63 (MD5) Previous issue date: 2015 / Resumo: Esse trabalho inicialmente faz uma análise da evolução dos sistemas de comunicações digitais, enfatizando a evolução dos sistemas DTV (Digital TV) e explora através de aplicações, os conceitos de IoT (Internet of Things), computação em nuvem, mineração de dados, big data e rádios cognitivos, propondo o uso de redes de sensores e banco de dados para uma diversidade de aplicações relacionadas ao uso do espectro de frequências, entre elas: o sensoriamento do espectro, a medição da qualidade de sinais ao longo do tempo, a estatística de audiência e a detecção dos modelos de propagação mais adequados para cada região. Na proposta, a medição de qualidade dos sinais de radiodifusão é realizada por sensores em campo e a interface gráfica é realizada através de Web Map Services, possibilitando a filtragem das informações por tipo de medida, área e período de interesse. Distribui-se o processamento de dados entre servidores e máquinas locais para o melhor desempenho das aplicações. Para o sensoriamento, aplica-se o conceito de IoT ao se propor a conversão de receptores comerciais convencionais como Set-Top-Boxes e smartphones em sensores de qualidade de sinais, considera-se esse método como uma solução viável para a composição de redes com centenas a milhares de sensores. Os sensores ao ganharem a capacidade de varrer o espectro de frequências de forma automática, são também considerados como rádios cognitivos em sistemas DTV. Devido à atual preocupação das agências reguladoras em buscar soluções para a melhor gestão e compartilhamento do espectro, propõe-se dessa forma, uma solução baseada em sensores de baixo custo e banco de dados que possam atuar na gestão do uso das frequências e, consequentemente possibilite uma série de análises quantitativas e qualitativas dos sinais eletromagnéticos / Abstract: This thesis initially analyses the evolution of digital communications, emphasizing the evolution of DTV systems (Digital TV), and, through software applications, explores the concepts of IoT (Internet of Things), cloud computing, data mining, big data and cognitive radios, when proposing the use of sensor networks and databases for a variety of applications related to the use of frequency spectrum, among them, spectrum sensing, measurement of signal quality over time, processing of collected data and its comparison with signal propagation models. We propose the measurement of broadcasting signal quality through low cost field sensors and the use of Web Map Services as a user interface, enabling the data filtering by type of measurement, area and period of interest. The data is processed by servers and local machines for improvement of applications performance. Following the concept of IoT, we propose the conversion of conventional commercial receivers, such as Set-Top-Boxes and smartphones into signal field sensors. This solution is considered a viable solution for the composition of networks with hundreds to thousands of sensors. As the devices incorporates capacity of frequency spectrum scanning capabilities, the proposed method can also be considered an application of cognitive radio system in DTV. Due to the concern of regulatory agencies in seeking solutions for better spectrum management and sharing among different systems, we propose a solution based on low-cost sensors and databases, which can act in the management of the frequency spectrum and therefore enable a series of quantitative and qualitative analyzes of radio signals / Doutorado / Telecomunicações e Telemática / Doutor em Engenharia Elétrica

This project, Database Access through the Web (DAW), implements a database to store academic and general information of graduate students in the Department of Computer Science, CSUSB and provides access to the database from the web. The motivation of the project comes from needs of the Graduate Coordinator, professors and department staff to access through the Internet student information concurrently.

This project was created using ColdFusion 4.5 to build and implement a commercial web site to present a real picture of electronic commerce. This project is intended to provide enough information for other students who are looking for a guideline for further study and to improve their skills in business from an information management aspect.

The purpose of Presentations World Wide System (PWWS) is to allow students to view a live presentation through an Internet browser and allow the instructor to have control over the presentation.

The scope of this project describes World Wide Graphics (WWG) a software package that provides instructors with the tools needed to present a web-based presentation to a group of students while having the ability of enhancing the prepared HTML slide with userdrawn graphics and highlighting.

Wireless is an important part of the future and utilizing the wireless technology in project management is a great tool. This project is a messaging system designed using WAP and Java Server pages, as both of them are the technologies of the future. The project puts together a tool to help in project management made with the use of Java Server Pages and MySQL as the backend database. It uses Wireless Markup Language as the basic language for the cellular phones and the hand held wireless devices. The prototype has been modeled on project planning for power plants done by Asea Brown Boveri, Ltd.

The project, Spider III, presents architecture and protocol of a multi-agent-based internet distributed computing system, which provides a convenient development and execution environment for transparent task distribution, load balancing, and fault tolerance. Spider is an on going distribution computing project in the Department of Computer Science, California State University San Bernardino. It was first proposed as an object-oriented distributed system by Han-Sheng Yuh in his master's thesis in 1997. It has been further developed by Koping Wang in his master's project, of where he made large contribution and implemented the Spider II System.

The sales representatives primary duties are to attract wholesale and retail buyers and purchasing agents to their merchandise, and to address any of their client's questions or concerns. Aided by a laptop computer connected to the Internet, they can access the customer information and sell products to their customer immediately. This project, a Mobile Order Entry System using cellphones, will give sales representatives as state-of-the-art alternative in accessing anf selling products to their customers through cell phones instead of using laptop computers.

The algorithms which control network routing are specific to the network because the algorithms are designed to take advantage of that network's topology. The "goodness" of a network includes such criteria as a simple routing algorithm and a simple routing algorithm would increase the use of the shuffle-exchange network.

Thesis (M.A. (Communication Studies)) -- University of Limpopo, 2020 / The purpose of this study was to assess the Integrated Marketing Communication (IMC) strategies used by the University of Limpopo’s Marketing and Communication, Student Recruitment division. The study focuses on the use of IMC strategies including direct marketing, which includes marketing through branding, face- to -face interaction with customers and other elements including advertising. The other aspect of the marketing strategy is digital communication, which includes social media and web marketing that the university uses to market themselves to their prospective students. The use of marketing strategies by higher institutions of learning was addressed in the literature review and the importance of implementing the strategies was also discussed. The study focused further on direct marketing and digital communication strategies following low student number enrolments in 2016, especially in the faculties of Science and Agriculture, as well as in Management and Law. The study examined the way in which the university presents and sells itself, promotes its services and maintains the relationship between students, both international and domestic. In this work, IMC strategies were explained and outlined for understanding, which allows for proper implementation of the strategies. The use of General Systems Theory (GST) served as a theoretical outline for this study to highlight the importance of marketing strategies that operate in a systematic way. The use of GST also advocated for the implementation of marketing strategies as a system. The theory was able to link both IMC strategies and the organisation of higher learning, wherein IMC is a system itself. There are elements of IMC that work together to create a system in an organisation. GST supports education as it was stated that educational institutions deal with marketing strategies which, need to be approached in a systematic way (Buckey, 1968). Institutions of higher learning are composed of many systems, which should not be viewed as individual, separate units, but as contributing parts to the effective functioning of the whole marketing strategy. The research design utilised grounded theory for philosophical methodological underpinning. The data was collected through semi-structured interviews taken from nine, (9) high school leaners from Zimbabwe and South Africa. International high v school participants were attending an exhibition in different places in Zimbabwe, such as Harare (Gateway High School). In South Africa, data was collected from different areas, such as Capricorn, Vhembe, Mopanae and Blouberg in Limpopo province. Branding and the use of social media was also a concern. Most participants concluded that the university needs to upgrade its marketing strategies and focus more on the digital communication as teenagers spend time on their digital devices, which can be helpful in accessing the information they need.