2,127 research outputs found

    Desarrollo de una aplicación móvil mediante la integración de realidad aumentada y comunicación oral

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    This Bachelor project aims to create an augmented reality application which uses computer vision algorithms and technologies to provide assistance to the visually impaired in their daily tasks. The specific purpose of the application is to recognize scenes and objects after capturing them using the device’s native camera. Colour recognition is also present to aid in identifying objects and their properties such as their size and distance from the capturing device, such functionality may also help individuals which suffer from colour blindness. The application also interacts with the user by speech, effectively establishing a Speech Dialogue System (SDS). The general planning of this project was done considering the gained knowledge from project development courses done within the University of Carlos III, Madrid. In such, the required research and development was divided in a set number of stages, each with an independent number of tasks. This methodology has allowed us to define three major stages: Planning, Execution and Closing. A Work Breakdown Structure (WBS) has been used to make the structuring of the project’s planning easier. For the development of the application, JAVA programming language was used within the Android Studio development environment. OpenCV libraries were imported and used to implement the functionalities of the developed system. The final version of the application has thus used computer vision as a tool to provide additional information over real world scenes both with on screen representation and audible messages. As future work it would be interesting to reduce the computational load of computer vision algorithms. It would perhaps be convenient to further improve the OpenCV library and its recent API on Android.Ingeniería de Sistemas Audiovisuale

    Innovative intelligent sensors to objectively understand exercise interventions for older adults

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    The population of most western countries is ageing and, therefore, the ageing issue now matters more than ever. According to the reports of the United Nations in 2017, there were a total of 15.8 million (26.9%) people over 60 years of age in the United Kindom, and the numbers are projected to reach 23.5 million (31.5%) by 2050. Spending on medical treatment and healthcare for older adults accounts for two-fifths of the UK National Health Service (NHS) budget. Keeping older people healthy is a challenge. In general, exercise is believed to benefit both mental and physical health. Specifically, resistance band exercises are proven by many studies that they have potentially positive effects on both mental and physical health. However, treatment using resistance band exercise is usually done in unmonitored environments, such as at home or in a rehabilitation centre; therefore, the exercise cannot be measured and/or quantified accurately. Despite many years of research, the true effectiveness of resistance band exercises remains unclear. [Continues.]</div

    A Novel Authentication Method Using Multi-Factor Eye Gaze

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    A method for novel, rapid and robust one-step multi-factor authentication of a user is presented, employing multi-factor eye gaze. The mobile environment presents challenges that render the conventional password model obsolete. The primary goal is to offer an authentication method that competitively replaces the password, while offering improved security and usability. This method and apparatus combine the smooth operation of biometric authentication with the protection of knowledge based authentication to robustly authenticate a user and secure information on a mobile device in a manner that is easily used and requires no external hardware. This work demonstrates a solution comprised of a pupil segmentation algorithm, gaze estimation, and an innovative application that allows a user to authenticate oneself using gaze as the interaction medium

    A Research on the Classification and Applicability of the Mobile Health Applications

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    Mobile health applications are applied for different purposes. Healthcare professionals and other users can use this type of mobile applications for specific tasks, such as diagnosis, information, prevention, treatment, and communication. This paper presents an analysis of mobile health applications used by healthcare professionals and their patients. A secondary objective of this article is to evaluate the scientific validation of these mobile health applications and to verify if the results provided by these applications have an underlying sound scientific foundation. This study also analyzed literature references and the use of mobile health applications available in online application stores. In general, a large part of these mobile health applications provides information about scientific validation. However, some mobile health applications are not validated. Therefore, the main contribution of this paper is to provide a comprehensive analysis of the usability and user-perceived quality of mobile health applications and the challenges related to scientific validation of these mobile applications.This work was funded by FCT/MCTES through national funds and when applicable co-funded EU funds under the project UIDB/EEA/50008/2020 (Este trabalho é financiado pela FCT/MCTES através de fundos nacionais e quando aplicável cofinanciado por fundos comunitários no âmbito do projeto UIDB/EEA/50008/2020)

    Evolution of Reactive Streams API for Context-Aware Mobile Applications

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    This article describes the role of reactive streams concept as a core communication pattern in mobile-first applications and proposes directions for evolution of its classic API to better match mobile application requirements. By designing the selected examples of mobile applications, the authors evaluate the Reactive Streams API which is an increasingly accepted standard for asynchronous communication with back-pressure. This design is then assessed with regard to solution expressiveness and the ability to satisfy functional and non-functional requirements of the stated problems. It is observed that the used API does not allow for a context propagation from a mobile subscriber to a publisher so that the streamed data can be well adjusted to the variable reception context of a given mobile device. To address this issues, a context-aware variant of this API is proposed and it is demonstrated and discussed by presenting an alternative application design

    A Lightweight Attribute-Based Access Control System for IoT.

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    The evolution of the Internet of things (IoT) has made a significant impact on our daily and professional life. Home and office automation are now even easier with the implementation of IoT. Multiple sensors are connected to monitor the production line, or to control an unmanned environment is now a reality. Sensors are now smart enough to sense an environment and also communicate over the Internet. That is why, implementing an IoT system within the production line, hospitals, office space, or at home could be beneficial as a human can interact over the Internet at any time to know the environment. 61% of International Data Corporation (IDC) surveyed organizations are actively pursuing IoT initiatives, and 6.8% of the average IT budgets is also being allocated to IoT initiatives. However, the security risks are still unknown, and 34% of respondents pointed out that data safety is their primary concern [1]. IoT sensors are being open to the users with portable/mobile devices. These mobile devices have enough computational power and make it di cult to track down who is using the data or resources. That is why this research focuses on proposing a dynamic access control system for portable devices in IoT environment. The proposed architecture evaluates user context information from mobile devices and calculates trust value by matching with de ned policies to mitigate IoT risks. The cloud application acts as a trust module or gatekeeper that provides the authorization access to READ, WRITE, and control the IoT sensor. The goal of this thesis is to offer an access control system that is dynamic, flexible, and lightweight. This proposed access control architecture can secure IoT sensors as well as protect sensor data. A prototype of the working model of the cloud, mobile application, and sensors is developed to prove the concept and evaluated against automated generated web requests to measure the response time and performance overhead. The results show that the proposed system requires less interaction time than the state-of-the-art methods

    Framework for the Integration of Mobile Device Features in PLM

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    Currently, companies have covered their business processes with stationary workstations while mobile business applications have limited relevance. Companies can cover their overall business processes more time-efficiently and cost-effectively when they integrate mobile users in workflows using mobile device features. The objective is a framework that can be used to model and control business applications for PLM processes using mobile device features to allow a totally new user experience

    Ex-Post Assessment of JRC Proof of Concept Projects 2010-2015

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    The internal JRC Proof of Concept (PoC) programme was established with the aim of encouraging researchers to further develop and exploit innovative technologies arising from research activities, by way of transforming them into products, processes and services for the benefit of society at large as well as for the market place. The program provides financial resources for technology development activities, prototyping, and market feasibility studies. The JRC budget, thus, not only funds research to support all stages of the European level policy cycle, but also allows researchers to undertake innovative work in relation to novel, original, and proprietary technologies.JRC.I.4-Intellectual Property and Technology Transfe

    3D object interaction and manipulation in VR nursery training applications

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    Every single day, researchers and developers find new ways where VR devices could be used to provide considerable benefits to a variety of fields. The cheap entry price, alongside with the lack of real-world consequences, makes it a really attractive prospect in fields such as medicine and vehicle driving simulations. Moreover, the current COVID-19 crisis is affecting training scenarios that would otherwise have been done in person, due to both the lack of resources and the risk of contagion, especially in the medical field. This project aims to provide a portable system that allows nursing personnel to create, configure, and play training sessions in an immersive virtual environment. Thanks to the accessible Oculus Quest, it provides an environment for easily creating training sessions, and experiencing these sessions in an immersive experience through the use of a VR headset and controllers.Cada dia, investigadors i desenvolupadors troben noves maneres en les quals els dispositius VR podrien ser utilitzats per a beneficiar a una varietat de camps. El baix cost inicial, conjuntament a la mancança de risc real, fa que aquest prospecte resulti atractiu per a certs camps com el de la medicina i el de les simulacions de conducció de vehicles. A més a més, la situació actual del COVIC-19 esta afectant a l'entrenament de personal que s'hauria d'haver realitzat en persona, ja sigui per culpa d'una mancança de recursos o el risc de contagi, especialment en el camp de la medicina. L'objectiu d'aquest projecte és proporcionar un sistema portàtil que permeti al personal d'infermeria crear, configurar, i reproduir sessions d'entrenament en un ambient virtual. Gracies a l'accessibilitat de l'Oculus Quest, es proporciona un entorn per a la fàcil creació de sessions d'entrenament, i per a experimentar aquestes sessions en una experiència immersiva emprant els cascs i controladors VR
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