Diseño e implementación de una aplicación de detección como elemento de realidad aumentada en automóviles

En este proyecto se realiza el diseño y la implementación de un sistema que genera realidad aumentada, mediante la detección de vehículos que se encuentran en una trayectoria, y sirve de base para la conducción autónoma en vehículospara ambientes nocturnos ya que se ha observado mediante el estudio del arte que no existen aplicaciones de este tipo en dichas condiciones. La implementación de dicho sistema se realiza mediante una aplicación móvil en el sistema operativo de Android, que se apoya en sus librerías para el uso de sensores y la creación de menús, y las de OpenCV para el tratamiento de las imágenes. Además, se han realizado una serie de pruebas para demostrar la validez y la eficiencia de dicho algoritmo y se presenta al usuario mediante una aplicación de fácil manejo y uso en un dispositivo móvil. ABSTRACT. This project is about the design and implemantation of a system which generates augmented reality by detecting vehicles that stand along a followed trayectory, working out the basis for autonomus driving in night environments, because it was noticed that any other applications exist for this particular purpose, under the given circumstances. Implementation works through an Android mobile application, and learns over this operative system libraries in order to work with sensors, menu configurations, and OpenCV for image processing. A number of tests were run to prove the algorithm right and efficient; and it is introduced to the users via an easy-to-use app on a mobile device.

Atención al cliente y medios sociales en la empresa

online donde el contenido es creado por los propios usuarios mediante el uso de las tecnologías de la web 2.0, que facilitan la edición, la publicación y el intercambio de información, de tal manera que los social media están democratizando las comunicaciones. Según datos publicados por eMarketer, casi el 25% del total de la inversión publicitaria mundial para el 2014 estará dirigida a medios digitales. Los medios de comunicación tradicionales están sumidos desde algún tiempo en una profunda crisis. En los comienzos de Internet, los protagonistas de este sector han creído en la red como un medio de publicación de contenidos en una única dirección, esto es la web 1.0, personas conectándose a páginas web. El típico lector de revista y seminario se ha convertido en un nuevo consumidor con necesidades muy distintas. El lector de un medio tradicional se encuentra con contenido cerrado, sin posibilidad de ser filtrado, que busca dirigir su opinión. Con el método tradicional no es posible ni personalizar el contenido ni la experiencia de uso. De ahí el nacimiento de la web 2.0, personas conectándose a personas (redes sociales). En un futuro cercano, van a triunfar las empresas, sectores y marcas que sepan adaptarse a la llegada de los social media, y que además de desarrollar su línea de negocio habitual, se conviertan en plataformas para la conversación y la construcción de contenidos en colaboración. En este proyecto voy a desarrollar el caso particular de una empresa de telecomunicaciones con una estrategia que use los social media como plataforma de atención al cliente, y para interaccionar también con su almacén en DHL. Los servicios añadidos que dicha empresa de telecomunicaciones ofrece a sus seguidores, clientes externos e internos se pueden agrupar en las siguientes funcionalidades:  Hacer un volcado del sistema de gestión de incidencias de una empresa de telecomunicaciones en las redes sociales, a través de mensajes privados. Dichos mensajes privados se enviarán a las páginas de Facebook y Twitter de los clientes.  Seguimiento por parte del cliente de puestas en marcha de los nuevos servicios a través de mensajes privados en Facebook y Twitter. Mediante este servicio el cliente podrá comprobar a través de las redes sociales el estado de su pedido e intercambiar información de utilidad con la empresa.  Desarrollar a través de las redes sociales una herramienta de marketing para interaccionar con los clientes y posibles seguidores. A través de los canales de los social media se proporciona a los seguidores información de valor sobre novedades del mercado de las telecomunicaciones, soporte técnico, dudas, consejos sobre implementaciones técnicas, equipos de telecomunicaciones,.etc.Es decir, crear una plataforma de conversación entre usuarios, que aporte a los seguidores conocimientos y soluciones útiles para la problemática de sus negocios.  Usar Facebook como base de datos y medio de comunicación entre nuestra empresa de telecomunicaciones y el almacén externalizado en DHL. Supongo que la primera pregunta que debo responder sería, ¿por qué un cliente de una empresa de telecomunicaciones estaría interesado en seguir a su proveedor a través de redes sociales? Facebook tiene en 2014 1,28 billones de usuarios activos. Twitter, la cuarta plataforma social por número de usuarios tras Facebook, alcanzó los 255 millones de usuarios en los primeros meses de 2014. La segunda red social en número de seguidores es Youtube, con un billón de usuarios. El 61,5% de los usuarios de Facebook visita la red todos los días. Los twitteros envían 110 millones tweets por día, tienen fama de muy activos, especialmente por la mañana. En 60 días, se sube más contenido de vídeo a YouTube que el producido por las tres principales cadenas de televisión estadounidense durante 60 años. Como conclusión, las redes sociales están ganando cada día más terreno, es un entorno de comunicación bidireccional en auge cada vez más extendido, por lo cual los usuarios no tienen que dedicar tiempo extra a conocer la herramienta de atención al cliente de su empresa, al usar ésta un canal fácil, conocido, rápido, versátil y gratuito como son las redes sociales. ABSTRACT. Social media are platforms of online communication where content is created by users themselves using technologies of web 2.0, which facilitate the editing, publication and the exchange of information, so that the social media are democratizing communications. According to data published by eMarketer, nearly 25% of the total global ad spend for 2014 will target digital media. The traditional media are trapped for some time in deep crisis. In the early days of the internet, the players of the sector have believed in the network as a means of publishing content in a single direction, this is the web 1.0, connecting people to websites. The typical magazine reader has become a new consumer with very different needs. Traditional medium readers encounter a closed content, unable to be filtered, which seeks handle their opinion. The traditional method doesn’t allow to customize the content and user experience. Hence the birth of Web 2.0, connecting people to people. In the near future, will succeed companies, sectors and brands who can adapt to the advent of social media, and further to develop their line of business as usual, become platforms for conversation and building collaborative content. In this project I will develop the particular case of a telecommunications company with a strategy to use social media as a platform for Customer Service, and also to interact with DHL warehouse. The additional services that the company offers telecommunications followers, external and internal customers can be grouped into the following functionality:  Make a dump of the incident management system of a telecommunications company in social networks through private messages. These private messages are sent Facebook and Twitter clients.  Monitoring by the client launched new services through private messages on Facebook and Twitter. Through this service, customers can check through the social networks of your order status and share useful information with the company.  Develop through social media as a marketing tool to interact with customers and potential followers.Our telco will provide to followers through social media channels valuable information on market developments in telecommunications, technical support, questions, advice on technical implementations, telecommunications equipment,etc. Then we create a platform for discussion between users, to provide followers useful knowledge and solutions to their business problems.  Use Facebook as a database and means of communication between our telco and outsourced telecommunications in DHL warehouse. I guess the first question that must be answered is why a customer of a telecommunications company would be interested in following your provider via social networks. Facebook has 1.28 billion active users in 2014. Twitter, the fourth social platform for many users after Facebook reached 255 million users in the first months of 2014. The second social network on number of followers is YouTube, with a billion users. 61.5% of Facebook users visit the network every day. The twitter users send 110 million tweets per day, have a reputation for very active, especially in the morning. In 60 days, it is produced more video content to YouTube by the three major US television for 60 years. In conclusion, social networks are gaining more ground every day. It is an environment of two-way communication on the rise, so users do not have to spend extra time to learn the tool of Customer Care telco, by using this easy, known, fast, versatile and free channels as are social networks.

A Cloud-based Framework for Security Analysis of Browser Extensions

In today's internet world, web browsers are an integral part of our day-to-day activities. Therefore, web browser security is a serious concern for all of us. Browsers can be breached in different ways. Because of the over privileged access, extensions are responsible for many security issues. Browser vendors try to keep safe extensions in their official extension galleries. However, their security control measures are not always effective and adequate. The distribution of unsafe extensions through different social engineering techniques is also a very common practice. Therefore, before installation, users should thoroughly analyze the security of browser extensions. Extensions are not only available for desktop browsers, but many mobile browsers, for example, Firefox for Android and UC browser for Android, are also furnished with extension features. Mobile devices have various resource constraints in terms of computational capabilities, power, network bandwidth, etc. Hence, conventional extension security analysis techniques cannot be efficiently used by end users to examine mobile browser extension security issues. To overcome the inadequacies of the existing approaches, we propose CLOUBEX, a CLOUd-based security analysis framework for both desktop and mobile Browser EXtensions. This framework uses a client-server architecture model. In this framework, compute-intensive security analysis tasks are generally executed in a high-speed computing server hosted in a cloud environment. CLOUBEX is also enriched with a number of essential features, such as client-side analysis, requirements-driven analysis, high performance, and dynamic decision making. At present, the Firefox extension ecosystem is most susceptible to different security attacks. Hence, the framework is implemented for the security analysis of the Firefox desktop and Firefox for Android mobile browser extensions. A static taint analysis is used to identify malicious information flows in the Firefox extensions. In CLOUBEX, there are three analysis modes. A dynamic decision making algorithm assists us to select the best option based on some important parameters, such as the processing speed of a client device and network connection speed. Using the best analysis mode, performance and power consumption are improved significantly. In the future, this framework can be leveraged for the security analysis of other desktop and mobile browser extensions, too.

Assisting End-users in Filling Out Web Services

With the quick advance of web service technologies, end-users can conduct various on-line tasks, such as shopping on-line. Usually, end-users compose a set of services to accomplish a task, and need to enter values to services to invoke the composite services. Quite often, users re-visit websites and use services to perform re-occurring tasks. The users are required to enter the same information into various web services to accomplish such re-occurring tasks. However, repetitively typing the same information into services is a tedious job for end-users. It can negatively impact user experience when an end-user needs to type the re-occurring information repetitively into web services. Recent studies have proposed several approaches to help users fill in values to services automatically. However, prior studies mainly suffer the following drawbacks: (1) limited support of collecting and analyzing user inputs; (2) poor accuracy of filling values to services; (3) not designed for service composition. To overcome the aforementioned drawbacks, we need maximize the reuse of previous user inputs across services and end-users. In this thesis, we introduce our approaches that prevent end-users from entering the same information into repetitive on-line tasks. More specifically, we improve the process of filling out services in the following 4 aspects: First, we investigate the characteristics of input parameters. We propose an ontology-based approach to automatically categorize parameters and fill values to the categorized input parameters. Second, we propose a comprehensive framework that leverages user contexts and usage patterns into the process of filling values to services. Third, we propose an approach for maximizing the value propagation among services and end-users by linking a set of semantically related parameters together and similar end-users. Last, we propose a ranking-based framework that ranks a list of previous user inputs for an input parameter to save a user from unnecessary data entries. Our framework learns and analyzes interactions of user inputs and input parameters to rank user inputs for input parameters under different contexts.

Improving cancer services through patient involvement

This book provides a clear approach to establishing a user involvement system in a healthcare organisation and its potential impact on cancer services. Using a tool kit style approach, drawing on examples of successful past projects and case studies to provide evidence of good practice, it describes how to plan and implement different stages of user involvement, enabling organisations to draw on user experience and expertise to evaluate, develop and improve the quality of service that they provide. Members of regional cancer networks, multidisciplinary cancer care teams, and all those involved in the NHS cancer services will find this toolkit interesting reading.

Hardware-based and Software-based Security in Digital Rights Management Solutions

The main requirements to DRM platforms implementing effective user experience and strong security measures to prevent unauthorized use of content are discussed. Comparison of hardware-based and software- based platforms is made showing the general inherent advantages of hardware DRM solutions. Analysis and evaluation of the main flaws of hardware platforms are conducted, pointing out the possibilities to overcome them. The overview of the existing concepts for practical realization of hardware DRM protection reveals their advantages and disadvantages and the increasing demand for creation of multi-core architecture, which could assure an effective DRM protection without decreasing the user’s freedom and importing risks for end system security.

We know what you want to buy:a demographic-based system for product recommendation on microblogs

Product recommender systems are often deployed by e-commerce websites to improve user experience and increase sales. However, recommendation is limited by the product information hosted in those e-commerce sites and is only triggered when users are performing e-commerce activities. In this paper, we develop a novel product recommender system called METIS, a MErchanT Intelligence recommender System, which detects users' purchase intents from their microblogs in near real-time and makes product recommendation based on matching the users' demographic information extracted from their public profiles with product demographics learned from microblogs and online reviews. METIS distinguishes itself from traditional product recommender systems in the following aspects: 1) METIS was developed based on a microblogging service platform. As such, it is not limited by the information available in any specific e-commerce website. In addition, METIS is able to track users' purchase intents in near real-time and make recommendations accordingly. 2) In METIS, product recommendation is framed as a learning to rank problem. Users' characteristics extracted from their public profiles in microblogs and products' demographics learned from both online product reviews and microblogs are fed into learning to rank algorithms for product recommendation. We have evaluated our system in a large dataset crawled from Sina Weibo. The experimental results have verified the feasibility and effectiveness of our system. We have also made a demo version of our system publicly available and have implemented a live system which allows registered users to receive recommendations in real time. © 2014 ACM.

Exploring demographic information in social media for product recommendation

In many e-commerce Web sites, product recommendation is essential to improve user experience and boost sales. Most existing product recommender systems rely on historical transaction records or Web-site-browsing history of consumers in order to accurately predict online users’ preferences for product recommendation. As such, they are constrained by limited information available on specific e-commerce Web sites. With the prolific use of social media platforms, it now becomes possible to extract product demographics from online product reviews and social networks built from microblogs. Moreover, users’ public profiles available on social media often reveal their demographic attributes such as age, gender, and education. In this paper, we propose to leverage the demographic information of both products and users extracted from social media for product recommendation. In specific, we frame recommendation as a learning to rank problem which takes as input the features derived from both product and user demographics. An ensemble method based on the gradient-boosting regression trees is extended to make it suitable for our recommendation task. We have conducted extensive experiments to obtain both quantitative and qualitative evaluation results. Moreover, we have also conducted a user study to gauge the performance of our proposed recommender system in a real-world deployment. All the results show that our system is more effective in generating recommendation results better matching users’ preferences than the competitive baselines.

Exploratory Study of the Download Speed of Leading University Hospitality and Tourism Department Websites Worldwide

Increased broadband penetration (BP) rates around the world have encouraged web designers to include more web content and additional functions on their web sites, thereby enhancing the richness and playfulness of the information. However, it is often very difficult for web surfers who are still using narrowband connections to access such web sites. Many university web sites target international audiences; therefore their download performance should be considered, as it may directly influence the user experience. This exploratory study examined 331 university hospitality and tourism department web sites in 37 countries. The empirical results showed that entry web pages of universities in Asia, with a medium BP rate (mid-BP), have the slowest download speeds, and those in Australia and New Zealand perform the best. The adoption rate of the Cascade Style Sheet (CSS) in Asia is relatively lower than that of other regions.

Management of remote field instrumentation via the Internet

Supervisory Control & Data Acquisition (SCADA) systems are used by many industries because of their ability to manage sensors and control external hardware. The problem with commercially available systems is that they are restricted to a local network of users that use proprietary software. There was no Internet development guide to give remote users out of the network, control and access to SCADA data and external hardware through simple user interfaces. To solve this problem a server/client paradigm was implemented to make SCADAs available via the Internet. Two methods were applied and studied: polling of a text file as a low-end technology solution and implementing a Transmission Control Protocol (TCP/IP) socket connection. Users were allowed to login to a website and control remotely a network of pumps and valves interfaced to a SCADA. This enabled them to sample the water quality of different reservoir wells. The results were based on real time performance, stability and ease of use of the remote interface and its programming. These indicated that the most feasible server to implement is the TCP/IP connection. For the user interface, Java applets and Active X controls provide the same real time access.

Navigazione di articoli scientifici e citazioni: un ambiente scalabile e flessibile

Questo lavoro di tesi si concentra sulle estensioni apportate a BEX (Bibliographic Explorer), una web app finalizzata alla navigazione di pubblicazioni scientifiche attraverso le loro citazioni. Il settore in cui si colloca è il Semantic Publishing, un nuovo ambito di ricerca derivato dall'applicazione delle tecnologie del Semantic Web allo Scholarly Publishing, che ha come scopo la pubblicazione di articoli accademici a cui vengono associati metadati semantici. BEX nasce all'interno del Semantic Lancet Project del Dipartimento di Informatica dell'Università di Bologna, il cui obiettivo è costruire un Linked Open Dataset di pubblicazioni accademiche, il Semantic Lancet Triplestore (SLT), e fornire strumenti per la navigazione ad alto livello e l'uso approfondito dei dati in esso contenuti. Gli scholarly Linked Open Data elaborati da BEX sono insiemi di triple RDF conformi alle ontologie SPAR. Originariamente BEX ha come backend il dataset SLT che contiene metadati relativi alle pubblicazioni del Journal Of Web Semantics di Elsevier. BEX offre viste avanzate tramite un'interfaccia interattiva e una buona user-experience. L'utente di BEX è principalmente il ricercatore universitario, che per compiere le sue attività quotidiane fa largo uso delle Digital Library (DL) e dei servizi che esse offrono. Dato il fermento dei ricercatori nel campo del Semantic Publishing e la veloce diffusione della pubblicazione di scholarly Linked Open Data è ragionevole pensare di ampliare e mantenere un progetto che possa provvedere al sense making di dati altrimenti interrogabili solo in modo diretto con queries SPARQL. Le principali integrazioni a BEX sono state fatte in termini di scalabilità e flessibilità: si è implementata la paginazione dei risultati di ricerca, l'indipendenza da SLT per poter gestire datasets diversi per struttura e volume, e la creazione di viste author centric tramite aggregazione di dati e comparazione tra autori.

Culture_Arte : a Web 2.0 ao serviço das artes visuais

Relatório de estágio para obtenção do grau de mestre na área de Educação e Comunicação Multimédia

3D Navigation with Six Degrees-of-Freedom using a Multi-Touch Display

With the introduction of new input devices, such as multi-touch surface displays, the Nintendo WiiMote, the Microsoft Kinect, and the Leap Motion sensor, among others, the field of Human-Computer Interaction (HCI) finds itself at an important crossroads that requires solving new challenges. Given the amount of three-dimensional (3D) data available today, 3D navigation plays an important role in 3D User Interfaces (3DUI). This dissertation deals with multi-touch, 3D navigation, and how users can explore 3D virtual worlds using a multi-touch, non-stereo, desktop display. The contributions of this dissertation include a feature-extraction algorithm for multi-touch displays (FETOUCH), a multi-touch and gyroscope interaction technique (GyroTouch), a theoretical model for multi-touch interaction using high-level Petri Nets (PeNTa), an algorithm to resolve ambiguities in the multi-touch gesture classification process (Yield), a proposed technique for navigational experiments (FaNS), a proposed gesture (Hold-and-Roll), and an experiment prototype for 3D navigation (3DNav). The verification experiment for 3DNav was conducted with 30 human-subjects of both genders. The experiment used the 3DNav prototype to present a pseudo-universe, where each user was required to find five objects using the multi-touch display and five objects using a game controller (GamePad). For the multi-touch display, 3DNav used a commercial library called GestureWorks in conjunction with Yield to resolve the ambiguity posed by the multiplicity of gestures reported by the initial classification. The experiment compared both devices. The task completion time with multi-touch was slightly shorter, but the difference was not statistically significant. The design of experiment also included an equation that determined the level of video game console expertise of the subjects, which was used to break down users into two groups: casual users and experienced users. The study found that experienced gamers performed significantly faster with the GamePad than casual users. When looking at the groups separately, casual gamers performed significantly better using the multi-touch display, compared to the GamePad. Additional results are found in this dissertation.

Assisting End-users in Filling Out Web Services

With the quick advance of web service technologies, end-users can conduct various on-line tasks, such as shopping on-line. Usually, end-users compose a set of services to accomplish a task, and need to enter values to services to invoke the composite services. Quite often, users re-visit websites and use services to perform re-occurring tasks. The users are required to enter the same information into various web services to accomplish such re-occurring tasks. However, repetitively typing the same information into services is a tedious job for end-users. It can negatively impact user experience when an end-user needs to type the re-occurring information repetitively into web services. Recent studies have proposed several approaches to help users fill in values to services automatically. However, prior studies mainly suffer the following drawbacks: (1) limited support of collecting and analyzing user inputs; (2) poor accuracy of filling values to services; (3) not designed for service composition. To overcome the aforementioned drawbacks, we need maximize the reuse of previous user inputs across services and end-users. In this thesis, we introduce our approaches that prevent end-users from entering the same information into repetitive on-line tasks. More specifically, we improve the process of filling out services in the following 4 aspects: First, we investigate the characteristics of input parameters. We propose an ontology-based approach to automatically categorize parameters and fill values to the categorized input parameters. Second, we propose a comprehensive framework that leverages user contexts and usage patterns into the process of filling values to services. Third, we propose an approach for maximizing the value propagation among services and end-users by linking a set of semantically related parameters together and similar end-users. Last, we propose a ranking-based framework that ranks a list of previous user inputs for an input parameter to save a user from unnecessary data entries. Our framework learns and analyzes interactions of user inputs and input parameters to rank user inputs for input parameters under different contexts.