SYPEC: Desenvolvimento de uma aplicação Android para controlo e avalia����o postural

Disserta����o para obten����o do Grau de Mestre em Engenharia Biom��dica

Desafios da computa����o móvel e usabilidade em sala de aula

Este resumo relata a experi��ncia em sala de aula na Universidade do Minho - Braga - Portugal, na disciplina de Sistemas M��veis e Ub��quos no Mestrado em Engenharia de Sistemas. realizou-se a avalia����o heur��stica da usabilidade de Nielsen nas aplica����es desenvolvidas para dispositivos m��veis por grupos. A metodologia embasou-se na aplicação de 3 projetos de 7 alunos, bem como aos 9 usu��rios externos a sala de aula; fundou-se ainda na avalia����o direta por uma especialista. Validou-se com question��rio de perguntas fechadas no intuito de confirmar os dados coletados. Ao final descreveu-se o grau de usabilidade das aplica����es sugest��es.

Satisfa����o de clientes com processo de compra : um estudo na empresa de telefonia móvel Telet S/A

Este trabalho aborda um tema relevante no atual contexto acad��mico e empresarial. A satisfa����o dos clientes �� assunto que tem merecido destaque entre a comunidade acad��mica, pelo desenvolvimento de uma s��rie de pesquisas. No meio empresarial, pesquisar a satisfa����o dos clientes torna-se excelente fonte de informa����es acerca das percep����es dos clientes quanto �� empresa. A pesquisa de satisfa����o apresentada foi aplicada no setor de telecomunica����es, especificamente na Telet S.A operadora de telefonia celular, banda B no Estado do Rio Grande do Sul. O objetivo central deste trabalho foi a avalia����o do grau de satisfa����o dos clientes da operadora com o processo de compra de aparelhos celulares e servi��os, que identificou-se, por meio de entrevistas com uma amostra de 400 (quatrocentos) clientes que entraram na base de assinantes da operadora no prazo m��ximo de sessenta dias antes da aplicação da pesquisa nas diversas regi��es de atua����o, identificados pelos prefixos 051,053,054 e 055. O m��todo utilizado foi de estudo descritivo. Os resultados obtidos foram analisados atrav��s do ISC (��ndice de Satisfa����o do Cliente) que combina as exig��ncias para satisfa����o dos consumidores (aspectos considerados importantes no processo de compra) e o desempenho percebido pelos mesmos em rela����o aos indicadores de qualidade / atributos oferecidos pela operadora. Al��m deste instrumento utilizou-se tamb��m a t��cnica da ���Janela do Cliente���, onde foi poss��vel identificar potenciais a����es mercadol��gicas, mostrando a operadora qual deve ser seu foco para aumentar o grau de satisfa����o de seus clientes com o processo ora estudado.

Converg��ncia entre telefonia fixa e móvel no Brasil: modelagem mercadolog��cia e sustentabilidade estrat��gica

A converg��ncia entre servi��os tipicamente prestados por empresas de telecomunica����es fixas e servi��os tipicamente prestados por operadoras m��veis �� um fen��meno que acontece mundialmente h�� mais de dez anos. A converg��ncia entre a ind��stria de telefonia fixa e móvel, como fen��meno evolutivo, pode ter tr��s principais for��as-motrizes: a simples evolu����o tecnol��gica, baseada, por exemplo, na digitaliza����o das telecomunica����es; a jun����o entre um vi��s de mercado, propiciado pelo alto n��vel concorrencial, e a busca por inova����es tecnol��gicas; ou uma simples converg��ncia entre ativos das diferentes ind��strias, buscando uma aplicação mais eficiente do capital. Mundialmente, j�� s��o conhecidos in��meros servi��os convergentes de telecomunica����es, embora a converg��ncia em telecomunica����es no Brasil ainda possa ser considerada incipiente. Considerando o relevante volume de faturamento agregado do mercado brasileiro de telecomunica����es fixas e m��veis e o elevado n��vel concorrencial, o estudo e aplicação de solu����es convergentes podem representar a gera����o de diferencial competitivo. Nesse sentido, o presente trabalho prop��e-se a avaliar as principais empresas de telecomunica����es do Brasil e seus respectivos recursos ou servi��os convergentes, segundo o framework VRIO, desenvolvido por Jay Barney, fundamentada na vis��o estrat��gica baseada em recursos (RBV- Resource Based View).

Retorno do investimento em marketing por empresas de telefonia móvel: uma avalia����o das operadoras do Estado de S��o Paulo

Este estudo no setor de telefonia celular adapta o modelo de investimento de marketing de Rust, Lemon & Zeithaml (2004) fornecendo um m��todo de avalia����o de investimento em ��reas estrat��gicas de marketing (value, brand e relationship equity). Aplicado ��s operadoras de telefonia celular do estado de S��o Paulo (Vivo, Claro e TIM), o modelo permite calcular a probabilidade de um cliente mudar da operadora atual para uma concorrente, e verificar se a contribui����o marginal advinda de uma a����o mercadol��gica ultrapassa ou n��o seu custo de capital. Finalmente, atrav��s da aplicação do modelo obt��m-se uma estimativa do customer equity atual das tr��s operadoras de telefonia celular estudadas.

Gestform mobile: aplicação web mobile para gest��o de forma����o

O presente relat��rio tem por objectivo apresentar e descrever de forma detalhada o projecto ���Gestform Mobile ��� Aplicação Web Mobile para Gest��o de Forma����o���, realizado no ��mbito do est��gio curricular de fim de curso, do Mestrado Integrado em Engenharia Inform��tica, da Universidade da Madeira. O projecto decorreu na empresa Proinov ��� Consultoria em Gest��o, Forma����o e Multim��dia., de 9 de Fevereiro de 2009 a 31 de Julho de 2010. A Proinov venceu o pr��mio Madeira Inova����o Empresarial 2007/2008, com o ���Gestform���. O Gestform �� uma ferramenta desenvolvida para gest��o de Processos de Forma����o, baseado na Web e pode ser acedida por todos os intervenientes (formadores, formandos, administradores, etc.) via Internet. Com o avan��ar das tecnologias m��veis, surgiu a necessidade de estender o Gestform para uma vers��o mobile. Pretendeu-se com este est��gio criar a vers��o mobile pretendida pela Proinov, vocacionada apenas para os formadores e formandos. Com a realiza����o deste projecto consegue-se responder aos objectivos enunciados, particularmente em rela����o �� componente realizada neste est��gio. Com a cria����o de uma aplicação mobile, �� poss��vel aceder �� ��rea dos Formandos e dos Formadores em qualquer lugar. �� um sistema muito vantajoso pois permite realizar as tarefas simples de forma generalizada, a partir de qualquer dispositivo móvel com acesso �� internet.

Constru����o, caracteriza����o e aplicação de eletrodos para descarga por arco de c��todo oco

The system built to characterize electrodes and, consequently, deposited fine films are constituted by a hollow cathode that works to discharges and low pressures (approximately 10-3 to 5 mbar), a source DC (0 to 1200 V), a cylindrical camera of closed borossilicato for flanges of stainless steel with an association of vacuum bombs mechanical and spread. In the upper flange it is connected the system of hollow cathode, which possesses an entrance of gas and two entrances for its refrigeration, the same is electrically isolated of the rest of the equipment and it is polarized negatively. In front of the system of hollow cathode there is a movable sample in stainless steel with possibility of moving in the horizontal and vertical. In the vertical, the sample can vary its distance between 0 and 70 mm and, in the horizontal, can leave completely from the front of the hollow cathode. The sample and also the cathode hollow are equipped with cromel-alumel termopares with simultaneous reading of the temperatures during the time of treatment. In this work copper electrodes, bronze, titanium, iron, stainless steel, powder of titanium, powder of titanium and sil��cio, glass and ceramic were used. The electrodes were investigated relating their geometry change and behavior of the plasma of the cavity of hollow cathode and channel of the gas. As the cavity of hollow cathode, the analyzed aspects were the diameter and depth. With the channel of the gas, we verified the diameter. In the two situations, we investigated parameters as flow of the gas, pressure, current and applied tension in the electrode, temperature, loss of mass of the electrode with relationship at the time of use. The flow of gas investigated in the electrodes it was fastened in a work strip from 15 to 6 sccm, the constant pressure of work was among 2.7 to 8 x 10-2 mbar. The applied current was among a strip of work from 0,8 to 0,4 A, and their respective tensions were in a strip from 400 to 220 V. Fixing the value of the current, it was possible to lift the curve of the behavior of the tension with the time of use. That curves esteem in that time of use of the electrode to its efficiency is maximum. The temperatures of the electrodes were in the dependence of that curves showing a maximum temperature when the tension was maximum, yet the measured temperatures in the samples showed to be sensitive the variation of the temperature in the electrodes. An accompaniment of the loss of mass of the electrode relating to its time of use showed that the electrodes that appeared the spherical cavities lost more mass in comparison with the electrodes in that didn't appear. That phenomenon is only seen for pressures of 10-2 mbar, in these conditions a plasma column is formed inside of the channel of the gas and in certain points it is concentrated in form of spheres. Those spherical cavities develop inside of the channel of the gas spreading during the whole extension of the channel of the gas. The used electrodes were cut after they could not be more used, however among those electrodes, films that were deposited in alternate times and the electrodes that were used to deposit films in same times, those films were deposited in the glass substrata, alumina, stainless steel 420, stainless steel 316, sil��cio and steel M2. As the eletros used to deposit films in alternate time as the ones that they were used to deposit in same times, the behavior of the thickness of the film obeyed the curve of the tension with relationship the time of use of the electrode, that is, when the tension was maximum, the thickness of the film was also maximum and when the tension was minimum, the thickness was minimum and in the case where the value of the tension was constant, the thickness of the film tends to be constant. The fine films that were produced they had applications with nano stick, bio-compatibility, cellular growth, inhibition of bacterias, cut tool, metallic leagues, brasagem, pineapple fiber and ornamental. In those films it was investigated the thickness, the adherence and the uniformity characterized by sweeping electronic microscopy. Another technique developed to assist the production and characterization of the films produced in that work was the caloteste. It uses a sphere and abrasive to mark the sample with a cap impression, with that cap form it is possible to calculate the thickness of the film. Through the time of life of the cathode, it was possible to evaluate the rate of waste of its material for the different work conditions. Values of waste rate up to 3,2 x 10-6 g/s were verified. For a distance of the substratum of 11 mm, the deposited film was limited to a circular area of 22 mm diameter mm for high pressures and a circular area of 75 mm for pressure strip. The obtained films presented thickness around 2,1 ��m, showing that the discharge of arch of hollow cathode in argon obeys a curve characteristic of the tension with the time of life of the eletrodo. The deposition rate obtained in this system it is of approximately 0,18 ��m/min

Atendimento Pr��-hospitalar Móvel. Mapeando Riscos e Prevenindo Erros

The attention with safety of the patients is important in the quality of the nursing and health care. In the pre-hospital care, such care is essential on site with the purpose of avoiding possible consequences to the individual, ensuring a fast and appropriate care, with improvement of the morbidity and reduction of the mortality. This medical attention is equally associated with the significant risks of adverse events and serious mistakes, which can be reduced with the awareness of the professionals, organization and quality management. It is a descriptive, transversal research, of quantitative approach, with the objective of identifying the risks for the safety of the patient during the mobile pre-hospital care under the view of the nurses, in a city of the Brazilian Northeast. The sample was formed by 23 nurses. The inclusion criteria: to have at least two years of experience and accept to participate on the research. The data collection was done in two steps, first photo collection, through the adapted method of photographic analysis, and the second with the application of questionnaire, divide in two parts: socio-professional data and digital photo punctuation instrument of the patient s safety. The majority of the nurses had an average working time in the mobile pre-hospital care of six years and six months, in the age group of 38 to 53 years old (69,56%) and with Lato sensu specialization (73,91%), being (29,41%) emergency and (29,41%) in intensive care. The (74%) have the Advance Cardiac Life Support (ACLS) and (100%) have the Pre-Hospital Trauma Life Support (PHTLS); (91, 30%) know the thematic safety of the patient. On the pictures it was observed a bigger variability of the categories (risks) where 44% of variance emerged on the first picture of the research. The pictures 4 and 9 with the average below 5 were classified as very insecure, while pictures 7 and 3 with an average above 7, very secure. On the results of risks observed for the patient s safety in the mobile pre-hospital care five categories emerged: organization and packaging of the equipment and materials, routines and specificities in the mobile pre-hospital care, risks on the management of medications, for traumas and infections. Starting from the analysis of these risks, it was proposed ten steps for the safety in the mobile pre-hospital care: 1- Identify the patient; 2- Safety related to prevention of infection; 3- Safety in the management of medications; 4- Safety and standardization of the packaging of equipment and materials; 5- Attention to the specificities of the mobile pre-hospital care; 6- Incentive and value the participation of the patient and family; 7- Promote the communication with the central of regulation; 8- Prevention of traumas and falls; 9- Protect the skin from additional injuries; 10- Understand the benefit of all the equipment in the ambulance. The multiple risks and their emerged combinations on the research indicate a variety of actions to be developed and stimulated, like the use of steps for the patient s safety in the mobile pre-hospital care which contributes with the aid and management of risks, reduction of mistakes, disabilities and death

Posicionamento e movimenta����o de um rob�� human��ide utilizando imagens de uma c��mera móvel externa

This work proposes a method to localize a simple humanoid robot, without embedded sensors, using images taken from an extern camera and image processing techniques. Once the robot is localized relative to the camera, supposing we know the position of the camera relative to the world, we can compute the position of the robot relative to the world. To make the camera move in the work space, we will use another mobile robot with wheels, which has a precise locating system, and will place the camera on it. Once the humanoid is localized in the work space, we can take the necessary actions to move it. Simultaneously, we will move the camera robot, so it will take good images of the humanoid. The mainly contributions of this work are: the idea of using another mobile robot to aid the navigation of a humanoid robot without and advanced embedded electronics; chosing of the intrinsic and extrinsic calibration methods appropriated to the task, especially in the real time part; and the collaborative algorithm of simultaneous navigation of the robots

Localiza����o de um rob�� móvel usando odometria e marcos naturais

Several methods of mobile robot navigation request the mensuration of robot position and orientation in its workspace. In the wheeled mobile robot case, techniques based on odometry allow to determine the robot localization by the integration of incremental displacements of its wheels. However, this technique is subject to errors that accumulate with the distance traveled by the robot, making unfeasible its exclusive use. Other methods are based on the detection of natural or artificial landmarks present in the environment and whose location is known. This technique doesnt generate cumulative errors, but it can request a larger processing time than the methods based on odometry. Thus, many methods make use of both techniques, in such a way that the odometry errors are periodically corrected through mensurations obtained from landmarks. Accordding to this approach, this work proposes a hybrid localization system for wheeled mobile robots in indoor environments based on odometry and natural landmarks. The landmarks are straight lines de.ned by the junctions in environments floor, forming a bi-dimensional grid. The landmark detection from digital images is perfomed through the Hough transform. Heuristics are associated with that transform to allow its application in real time. To reduce the search time of landmarks, we propose to map odometry errors in an area of the captured image that possesses high probability of containing the sought mark