Emergency direct: studio e implementazione di un'applicazione android per disseminazione di messaggi d'allarme in reti spontanee

In questa tesi inizialmente ci si �� occupati di definire ed approfondire le caratteristiche della tecnologia Wi-Fi Direct, illustrandone il funzionamento, l���architettura e gli scenari di utilizzo. Successivamente �� stata sviluppata un���applicazione basata su tale tecnologia, con lo scopo di fornire un servizio di disseminazione di messaggi d���aiuto in situazioni di emergenza o di catastrofi naturali, nelle quali la rete cellulare viene inevitabilmente meno. In queste occasioni c����� il bisogno di avere uno strumento che permetta di comunicare in maniera facile, veloce e che sia alla portata di tutti. Caratteristiche e qualit�� proprie di uno smartphone, dispositivo che oggigiorno �� presente nelle tasche di ognuno di noi. L���obiettivo finale infatti, sarebbe quello di creare un applicativo che possa idealmente essere preinstallato in ogni nostro dispositivo, un servizio che sia diffuso, compreso ed utilizzabile istantaneamente da tutti, in modo tale da essere una sicurezza e un aiuto di vitale importanza in situazioni di pericolo. Per lo sviluppo di una tale applicazione ci si �� basati sul sistema operativo Android, che �� il pi�� diffuso tra gli utenti di tutto il mondo. Nel primo capitolo ci si �� occupati di di presentare ed approfondire la tecnologia Wi-Fi Direct, definendone gli ambiti generali di utilizzo e le problematiche che vengono affrontate. Nel secondo capitolo si prosegue con la presentazione della tecnologia in ambiente Android, descrivendo le API fornite da Google per l���utilizzo del servizio in questione. Nel terzo capitolo, dopo un���analisi dei progetti che coinvolgono tale tecnologia, viene illustrata l���applicazione creata, le sue funzionalit�� e caratteristiche ed eventuali casi d���uso. Nel quarto capitolo �� stata inserita la parte pi�� tecnica, dove illustro i problemi incontrati e le modalit�� di risoluzione degli stessi, insieme alle strutture ed agli oggetti messi a disposizione da Java che sono stati utilizzati. Infine nel capitolo conclusivo �� stato fatto un riepilogo del lavoro svolto, indicando le difficolt�� incontrate ed eventuali possibili miglioramenti e sviluppi futuri del mio progetto.

Android en el Hogar Digital usando UPnP y Redes LonWorks

Este Proyecto Final de Carrera se centra principalmente en el estudio de las tecnolog��as aplicadas al Hogar Digital (HD) y as�� poder desarrollar nuevas herramientas aplicadas a este Sector. La primera tecnolog��a estudiada es LonWorks que se escogi�� porque en la EUITT se cuenta con un entorno dom��tico donde se aplica esta tecnolog��a, materializado como una maqueta de una instalaci��n LonWorks en un HD. Sobre este entorno se ha desarrollado una nueva forma de gestionar y controlar los elementos de una Red LonWorks mediante la tecnolog��a Universal Plug & Play (UPnP). Los dispositivos LonWorks han sido recubiertos con una capa con la que se consigue tratar los elementos LonWorks como dispositivos UPnP, pudiendo de esta manera trabajar bajo un mismo formato de dispositivo. Este formato est�� definido por un documento denominado Descripci��n del Dispositivo UPnP. Por tanto, no es necesario conocer el estado de los dispositivos de la Red LonWorks, sino ��nicamente trabajar bajo una Red UPnP, creando nuevos dispositivos UPnP, puntos de Control y servicios a partir de los elementos LonWorks. Una vez realizado el recubrimiento del sistema LonWorks con UPnP, se ha definido y desarrollado una aplicaci��n para Android que, permite controlar los elementos de la maqueta del HD desde un Smartphone o una Tablet. El acceso a la Red LonWorks de la maqueta del HD se hace a trav��s de la interfaz Web Services SOAP/XML del dispositivo iLON100. ABSTRACT. This Final Degree Project is mainly focused on the study of the technologies applied to Digital Home and thus be able to develop new tools applied to this area. The first study is LonWorks technology which was chosen because the EUITT has a domotic environment where this technology is applied, materialized as a demonstrator of a LonWorks installation in HD. With this environment has developed a new way to manage and control the elements of a LonWorks network through technology by Universal Plug & Play (UPnP). LonWorks devices are covered with a layer and it is achieved LonWorks elements treat as UPnP devices. In this way the LonWorks elements can work under one device format. This format is defined by a document called UPnP Device Description. Therefore, it isn't necessary to know the state of the LonWorks network devices, but only work under an UPnP network, creating new UPnP devices, control points and services from LonWorks elements. After backfill of LonWorks system with UPnP, have being defined and developed an Android application that allow controlling the elements of the mockup of HD from Smartphone or a Tablet. The LonWorks network Access of the mockup of HD is done through the Web Interface Services SOAP / XML iLON100 device.

Development of a human movement monitoring system based on wearable devices

It is essential to remotely and continuously monitor the movements of individuals in many social areas, for example, taking care of aging people, physical therapy, athletic training etc. Many methods have been used, such as video record, motion analysis or sensor-based methods. Due to the limitations in remote communication, power consumption, portability and so on, most of them are not able to fulfill the requirements. The development of wearable technology and cloud computing provides a new efficient way to achieve this goal. This paper presents an intelligent human movement monitoring system based on a smartwatch, an Android smartphone and a distributed data management engine. This system includes advantages of wide adaptability, remote and long-term monitoring capacity, high portability and flexibility. The structure of the system and its principle are introduced. Four experiments are designed to prove the feasibility of the system. The results of the experiments demonstrate the system is able to detect different actions of individuals with adequate accuracy.

Contribution towards intelligent service management in wearable and ubiquitous devices

Hoy en d��a asistimos a un creciente inter��s por parte de la sociedad hacia el cuidado de la salud. Esta afirmaci��n viene apoyada por dos realidades. Por una parte, el aumento de las pr��cticas saludables (actividad deportiva, cuidado de la alimentaci��n, etc.). De igual manera, el auge de los dispositivos inteligentes (relojes, m��viles o pulseras) capaces de medir distintos par��metros f��sicos como el pulso card��aco, el ritmo respiratorio, la distancia recorrida, las calor��as consumidas, etc. Combinando ambos factores (inter��s por el estado de salud y disponibilidad comercial de dispositivos inteligentes) est��n surgiendo multitud de aplicaciones capaces no solo de controlar el estado actual de salud, tambi��n de recomendar al usuario cambios de h��bitos que lleven hacia una mejora en su condici��n f��sica. En este contexto, los llamados dispositivos llevables (weareables) unidos al paradigma de Internet de las cosas (IoT, del ingl��s Internet of Things) permiten la aparici��n de nuevos nichos de mercado para aplicaciones que no solo se centran en la mejora de la condici��n f��sica, ya que van m��s all�� proponiendo soluciones para el cuidado de pacientes enfermos, la vigilancia de ni��os o ancianos, la defensa y la seguridad, la monitorizaci��n de agentes de riesgo (como bomberos o polic��as) y un largo etc��tera de aplicaciones por llegar. El paradigma de IoT se puede desarrollar bas��ndose en las existentes redes de sensores inal��mbricos (WSN, del ingl��s Wireless Sensor Network). La conexi��n de los ya mencionados dispositivos llevables a estas redes puede facilitar la transici��n de nuevos usuarios hacia aplicaciones IoT. Pero uno de los problemas intr��nsecos a estas redes es su heterogeneidad. En efecto, existen multitud de sistemas operativos, protocolos de comunicaci��n, plataformas de desarrollo, soluciones propietarias, etc. El principal objetivo de esta tesis es realizar aportaciones significativas para solucionar no solo el problema de la heterogeneidad, sino tambi��n de dotar de mecanismos de seguridad suficientes para salvaguardad la integridad de los datos intercambiados en este tipo de aplicaciones. Algo de suma importancia ya que los datos m��dicos y biom��tricos de los usuarios est��n protegidos por leyes nacionales y comunitarias. Para lograr dichos objetivos, se comenz�� con la realizaci��n de un completo estudio del estado del arte en tecnolog��as relacionadas con el marco de investigaci��n (plataformas y est��ndares para WSNs e IoT, plataformas de implementaci��n distribuidas, dispositivos llevables y sistemas operativos y lenguajes de programaci��n). Este estudio sirvi�� para tomar decisiones de dise��o fundamentadas en las tres contribuciones principales de esta tesis: un bus de servicios para dispositivos llevables (WDSB, Wearable Device Service Bus) basado en tecnolog��as ya existentes tales como ESB, WWBAN, WSN e IoT); un protocolo de comunicaciones inter-dominio para dispositivos llevables (WIDP, Wearable Inter-Domain communication Protocol) que integra en una misma soluci��n protocolos capaces de ser implementados en dispositivos de bajas capacidades (como lo son los dispositivos llevables y los que forman parte de WSNs); y finalmente, la tercera contribuci��n relevante es una propuesta de seguridad para WSN basada en la aplicaci��n de dominios de confianza. Aunque las contribuciones aqu�� recogidas son de aplicaci��n gen��rica, para su validaci��n se utiliz�� un escenario concreto de aplicaci��n: una soluci��n para control de par��metros f��sicos en entornos deportivos, desarrollada dentro del proyecto europeo de investigaci��n ���LifeWear���. En este escenario se desplegaron todos los elementos necesarios para validar las contribuciones principales de esta tesis y, adem��s, se realiz�� una aplicaci��n para dispositivos m��viles por parte de uno de los socios del proyecto (lo que contribuy�� con una validaci��n externa de la soluci��n). En este escenario se usaron dispositivos llevables tales como un reloj inteligente, un tel��fono m��vil con sistema operativo Android y un medidor del ritmo card��aco inal��mbrico capaz de obtener distintos par��metros fisiol��gicos del deportista. Sobre este escenario se realizaron diversas pruebas de validaci��n mediante las cuales se obtuvieron resultados satisfactorios. ABSTRACT Nowadays, society is shifting towards a growing interest and concern on health care. This phenomenon can be acknowledged by two facts: first, the increasing number of people practising some kind of healthy activity (sports, balanced diet, etc.). Secondly, the growing number of commercial wearable smart devices (smartwatches or bands) able to measure physiological parameters such as heart rate, breathing rate, distance or consumed calories. A large number of applications combining both facts are appearing. These applications are not only able to monitor the health status of the user, but also to provide recommendations about routines in order to improve the mentioned health status. In this context, wearable devices merged with the Internet of Things (IoT) paradigm enable the proliferation of new market segments for these health wearablebased applications. Furthermore, these applications can provide solutions for the elderly or baby care, in-hospital or in-home patient monitoring, security and defence fields or an unforeseen number of future applications. The introduced IoT paradigm can be developed with the usage of existing Wireless Sensor Networks (WSNs) by connecting the novel wearable devices to them. In this way, the migration of new users and actors to the IoT environment will be eased. However, a major issue appears in this environment: heterogeneity. In fact, there is a large number of operating systems, hardware platforms, communication and application protocols or programming languages, each of them with unique features. The main objective of this thesis is defining and implementing a solution for the intelligent service management in wearable and ubiquitous devices so as to solve the heterogeneity issues that are presented when dealing with interoperability and interconnectivity of devices and software of different nature. Additionally, a security schema based on trust domains is proposed as a solution to the privacy problems arising when private data (e.g., biomedical parameters or user identification) is broadcasted in a wireless network. The proposal has been made after a comprehensive state-of-the-art analysis, and includes the design of a Wearable Device Service Bus (WDSB) including the technologies collected in the requirement analysis (ESB, WWBAN, WSN and IoT). Applications are able to access the WSN services regardless of the platform and operating system where they are running. Besides, this proposal also includes the design of a Wearable Inter-Domain communication Protocols set (WIDP) which integrates lightweight protocols suitable to be used in low-capacities devices (REST, JSON, AMQP, CoAP, etc...). Furthermore, a security solution for service management based on a trustworthy domains model to deploy security services in WSNs has been designed. Although the proposal is a generic framework for applications based on services provided by wearable devices, an application scenario for testing purposes has been included. In this validation scenario it has been presented an autonomous physical condition performance system, based on a WSN, bringing the possibility to include several elements in an IoT scenario: a smartwatch, a physiological monitoring device and a smartphone. In summary, the general objective of this thesis is solving the heterogeneity and security challenges arising when developing applications for WSNs and wearable devices. As it has been presented in the thesis, the solution proposed has been successfully validated in a real scenario and the obtained results were satisfactory.

Dise��o y construcci��n de un helic��ptero coaxial controlado sobre Android

El presente proyecto sienta las bases para el desarrollo de un helic��ptero coaxial aut��nomo. Como principales novedades, se quiere destacar el manejo y control de este. El manejo del helic��ptero se consigue desplazando el centro de gravedad. Por otro lado, el control se realiza mediante los sensores de un Smartphone a bordo de la aeronave. Este tel��fono adem��s, proporcionar�� una amplia gama de recursos para el desarrollo de futuras aplicaciones, como pueden ser la c��mara o GPS. Tambi��n se desarrolla la aplicaci��n para enviar ��rdenes desde el exterior para maniobrar el helic��ptero. Este trabajo se lleva a cabo conjuntamente con mi compa��ero Eduardo Ortega Biber (1), qui��n se enfoca en las tareas de dise��o y simulaci��n. Mientras que el actual proyecto, se centra en el desarrollo de las dos aplicaciones Android de los tel��fonos.

Equipo de medici��n de estr��s portable con conectividad a plataforma a trav��s del SmartPhone

Durante este trabajo fin de grado (TFG), se ha hecho uso del m��dulo GSR (o m��dulo Stress) de la empresa RGB Medical Devices, para crear una aplicaci��n Android que recoja la informaci��n enviada por dicho m��dulo a trav��s del Bluetooth del SmartPhone y la muestre en pantalla en tiempo real.

Control remoto de presentaciones mediante Raspberry PI y Android

Este proyecto fin de carrera trata de mejorar los sistemas actuales de control en la visualizaci��n de diapositivas. La soluci��n adoptada constar�� de un sistema con modelo cliente-servidor. El servidor formado por un mini ordenador, en este caso una Raspberry Pi, que estar�� conectado al proyector de video. Este servidor se mantendr�� a la espera de recibir una conexi��n entrante v��a Bluetooth. Una vez se realice la conexi��n interpretar�� los comandos mandados por el cliente a trav��s de una API con formato JSON y realizar�� las acciones indicadas para el control de la presentaci��n. El cliente ser�� una aplicaci��n m��vil para dispositivos Android. A trav��s de ella el profesor acceder�� al servidor escaneando un c��digo QR que ser�� proyectado y una vez conectado enviar�� los comandos de control de la presentaci��n, tales como abrir una presentaci��n, avanzar y retroceder diapositiva, etc. La soluci��n final deber�� ser eficiente, sencilla de utilizar y con un bajo coste para resultar atractiva y ser as�� ��til en el mundo real. Para ello se contar�� con valores a��adidos como el poder iniciar la presentaci��n desde el dispositivo m��vil, el mostrar las notas de la diapositiva actual o contar con un temporizador para permitir un mejor control sobre el tiempo disponible para la presentaci��n. ABSTRACT. This final project pursues the improvement of the current presentation control systems. The solution it provides is based on a server-client architecture. The server will be a mini PC, a Raspberry Pi model in this case, that will be connected to a video projector or a screen monitor. This server will remain idle waiting for an incoming Bluetooth connection. Once the connection is accepted the server will parse the commands sent by the client through a JSON API and will execute them accordingly to control the system. The client we decided to develop is an Android application. The speaker will be able to connect with the server by scanning a QR code that will be generated and displayed into the projector or screen monitor. Once the connection is accepted the client will sent the commands to control the slides, such as opening a presentation, move forward and backwards, etc. The adopted solution must be efficient, easy to use and with low cost to be appealing and useful to the real world. To accomplish the task this project will count with improvements over the current systems, such as the possibility to open a presentation from the smartphone, the visualization of the current slide notes from the mobile phone and a countdown timer to have a better control over the available time for the presentation.

Design and Implementation of a Cloud-based Middleware for Persuasive Android Applications

Negli ultimi decenni, le tecnologie e i prodotti informatici sono diventati pervasivi e sono ora una parte essenziale delle nostre vite. Ogni giorno ci influenzano in maniera pi�� o meno esplicita, cambiando il nostro modo di vivere e i nostri comportamenti pi�� o meno intenzionalmente. Tuttavia, i computer non nacquero inizialmente per persuadere: essi furono costruiti per gestire, calcolare, immagazzinare e recuperare dati. Non appena i computer si sono spostati dai laboratori di ricerca alla vita di tutti i giorni, sono per�� diventati sempre pi�� persuasivi. Questa area di ricerca �� chiamata pesuasive technology o captology, anche definita come lo studio dei sistemi informatici interattivi progettati per cambiare le attitudini e le abitudini delle persone. Nonostante il successo crescente delle tecnologie persuasive, sembra esserci una mancanza di framework sia teorici che pratici, che possano aiutare gli sviluppatori di applicazioni mobili a costruire applicazioni in grado di persuadere effettivamente gli utenti finali. Tuttavia, il lavoro condotto dal Professor Helal e dal Professor Lee al Persuasive Laboratory all���interno dell���University of Florida tenta di colmare questa lacuna. Infatti, hanno proposto un modello di persuasione semplice ma efficace, il quale pu�� essere usato in maniera intuitiva da ingegneri o specialisti informatici. Inoltre, il Professor Helal e il Professor Lee hanno anche sviluppato Cicero, un middleware per dispositivi Android basato sul loro precedente modello, il quale pu�� essere usato in modo molto semplice e veloce dagli sviluppatori per creare applicazioni persuasive. Il mio lavoro al centro di questa tesi progettuale si concentra sull���analisi del middleware appena descritto e, successivamente, sui miglioramenti e ampliamenti portati ad esso. I pi�� importanti sono una nuova architettura di sensing, una nuova struttura basata sul cloud e un nuovo protocollo che permette di creare applicazioni specifiche per smartwatch.

mHealth in Urology: A Review of Experts' Involvement in App Development

Smartphones are increasingly playing a role in healthcare and previous studies assessing medical applications (apps) have raised concerns about lack of expert involvement and low content accuracy. However, there are no such studies in Urology. We reviewed Urology apps with the aim of assessing the level of participation of healthcare professionals (HCP) and scientific Urology associations in their development.

Interface em smartphone para supervis��o de um sistema de controlo de uma instala����o solar t��rmica

Disserta����o de Mestrado, Engenharia El��trica e Eletr��nica, Especializa����o em Sistemas de Energia e Controlo, Instituto Superior de Engenharia, Universidade do Algarve, 2014

Measurement of the magnetic field of small magnets with a smartphone: a very economical laboratory practice for introductory physics courses

In this work, we propose an inexpensive laboratory practice for an introductory physics course laboratory for any grade of science and engineering study. This practice was very well received by our students, where a smartphone (iOS, Android, or Windows) is used together with mini magnets (similar to those used on refrigerator doors), a 20 cm long school rule, a paper, and a free application (app) that needs to be downloaded and installed that measures magnetic fields using the smartphone's magnetic field sensor or magnetometer. The apps we have used are: Magnetometer (iOS), Magnetometer Metal Detector, and Physics Toolbox Magnetometer (Android). Nothing else is needed. Cost of this practice: free. The main purpose of the practice is that students determine the dependence of the component x of the magnetic field produced by different magnets (including ring magnets and sphere magnets). We obtained that the dependency of the magnetic field with the distance is of the form x-3, in total agreement with the theoretical analysis. The secondary objective is to apply the technique of least squares fit to obtain this exponent and the magnetic moment of the magnets, with the corresponding absolute error.

mHealth-based Methods for Neuromotor Assessment and Rehabilitation

Recent years observed massive growth in wearable technology, everything can be smart: phones, watches, glasses, shirts, etc. These technologies are prevalent in various fields: from wellness/sports/fitness to the healthcare domain. The spread of this phenomenon led the World-Health-Organization to define the term 'mHealth' as "medical and public health practice supported by mobile devices, such as mobile phones, patient monitoring devices, personal digital assistants, and other wireless devices". Furthermore, mHealth solutions are suitable to perform real-time wearable Biofeedback (BF) systems: sensors in the body area network connected to a processing unit (smartphone) and a feedback device (loudspeaker) to measure human functions and return them to the user as (bio)feedback signal. During the COVID-19 pandemic, this transformation of the healthcare system has been dramatically accelerated by new clinical demands, including the need to prevent hospital surges and to assure continuity of clinical care services, allowing pervasive healthcare. Never as of today, we can say that the integration of mHealth technologies will be the basis of this new era of clinical practice. In this scenario, this PhD thesis's primary goal is to investigate new and innovative mHealth solutions for the Assessment and Rehabilitation of different neuromotor functions and diseases. For the clinical assessment, there is the need to overcome the limitations of subjective clinical scales. Creating new pervasive and self-administrable mHealth solutions, this thesis investigates the possibility of employing innovative systems for objective clinical evaluation. For rehabilitation, we explored the clinical feasibility and effectiveness of mHealth systems. In particular, we developed innovative mHealth solutions with BF capability to allow tailored rehabilitation. The main goal that a mHealth-system should have is improving the person's quality of life, increasing or maintaining his autonomy and independence. To this end, inclusive design principles might be crucial, next to the technical and technological ones, to improve mHealth-systems usability.

Progettazione e simulazione di un attacco sniffing su un dispositivo wearable

Oggigiorno, grazie al progresso tecnologico nel settore informatico e alla vasta diffusione dei dispositivi mobili all'interno del mercato mondiale, numerose sono le persone che utilizzando questi prodotti all'interno della vita di tutti giorni e.g. smartphone, smartwatch, smartband, auricolari, tablet, ecc. Per poter utilizzare questi dispositivi, spesso �� necessario l'impiego di applicazioni apposite installate sui cellulari di ultima generazione e collegate ai dispositivi che permettono il controllo, la gestione e la raccolta dei dati relativo all'oggetto in questione. Oltre a facilitare le attivit�� giornaliere, questi programmi, potrebbero causare dei problemi agli utenti a causa della ridotta o mancata sicurezza, poich�� le informazioni personali come credenziali d'accesso, dati salutistici oppure quelli inerenti ai metodi di pagamento possono essere soggetti ad attacchi informatici. Questa tesi consiste nell'elaborazione di un software composto da un'applicazione Android, uno script Batch e dall'uso di programmi di terze parti, per poter effettuare la simulazione di un attacco sniffing in modo da poter intercettare i dati trasmessi, quali credenziali di accesso, OTP, tramite la tecnologia Bluetooth Low Energy.

O uso do smartphone na avalia����o do risco de queda associado ao envelhecimento

Introdu����o: O decl��nio do equil��brio, da for��a dos membros inferiores e o medo de cair s��o fatores de risco de queda associados ao envelhecimento e a sua avalia����o pode ser realizada pelo teste One Leg Standing (OLS), Sit to Stand (STS) e pela Falls Eficacy Scale (FES), respetivamente. As aplica����es para smartphone constituem uma alternativa para a avalia����o dos fatores de risco de queda no envelhecimento. Objetivo: Analisar a capacidade de uma aplica����o para smartphone na avalia����o dos testes STS, OLS e FES. Metodologia: Realizou-se um estudo anal��tico numa amostra de 27 volunt��rios com idade ��� 60 anos. Realizaram-se os testes STS, OLS e a FES (vers��o iconogr��fica, apresentada no smartphone). Os dados foram recolhidos simultaneamente por um smartphone e pelo Qualisys Motion Capture Systems associado a uma plataforma de for��as. Foi utilizado o r de Pearson ou Spearman para analisar as poss��veis correla����es. Resultados: No STS obteve-se uma correla����o muito forte (rp=0.97) no n��mero de repeti����es de ciclos Sit Stand Sit (SLS) e forte na dura����o m��dia do SLS (rp=0.85) e das subfases Sit to Stand (rp=0.69) e Stand to Sit (rp=0.778), com p<0.001. As medidas de inclina����o do tronco apresentaram correla����es fortes, com exce����o do ��ngulo inicial (p���0.05). No OLS, verificou-se uma correla����o moderada entre o deslocamento do centro de press��o peak to peak m��dio-lateral (rs=0.45; p=0.017) e antero-posterior (rs=0.39; p=0.046), root mean square m��dio-lateral (rs=0.39; p=0.046) e antero-posterior (rs=0.46; p=0.017) e ��rea do estatocinesiograma (rs=0.45; p=0.018). Na FES obteve-se uma correla����o moderada em tr��s categorias: ���tomar banho/duche��� (rs=0.49; p=0.010), ���deitar/levantar da cama (rs=0.43; p=0.024) e ���chegar aos arm��rios��� (rs=0.38; p=0.050). Conclus��o: A aplica����o para smartphone parece avaliar corretamente os ciclos e a varia����o da inclina����o do tronco no STS, por��m parece necessitar de ser reajustada na FES e na velocidade do deslocamento do centro de press��o, no OLS.

Android as a cloud ticket validator

Trabalho Final de Mestrado para a obten����o do grau de Mestre em Engenharia Inform��tica e de Computadores