Service Oriented Mobile Computing

La diffusione di concetti quali Pervasive e Mobile Computing introduce nell'ambito dei sistemi distribuiti due aspetti fondamentali: la mobilità dell'utente e l'interazione con l'ambiente circostante, favorite anche dal crescente utilizzo di dispositivi mobili dotati di connettività wireless come prodotti di consumo. Per estendere le funzionalità introdotte nell'ambito dei sistemi distribuiti dalle Architetture Orientate ai Servizi (SOA) e dal paradigma peer-to-peer anche a dispositivi dalle risorse limitate (in termini di capacità computazionale, memoria e batteria), è necessario disporre di un middleware leggero e progettato tenendo in considerazione tali caratteristiche. In questa tesi viene presentato NAM (Networked Autonomic Machine), un formalismo che descrive in modo esaustivo un sistema di questo tipo; si tratta di un modello teorico per la definizione di entità hardware e software in grado di condividere le proprie risorse in modo completamente altruistico. In particolare, il lavoro si concentra sulla definizione e gestione di un determinato tipo di risorse, i servizi, che possono essere offerti ed utilizzati da dispositivi mobili, mediante meccanismi di composizione e migrazione. NSAM (Networked Service-oriented Autonomic Machine) è una specializzazione di NAM per la condivisione di servizi in una rete peer-to-peer, ed è basato su tre concetti fondamentali: schemi di overlay, composizione dinamica di servizi e auto-configurazione dei peer. Nella tesi vengono presentate anche diverse attività applicative, che fanno riferimento all'utilizzo di due middleware sviluppati dal gruppo di Sistemi Distribuiti (DSG) dell'Università di Parma: SP2A (Service Oriented Peer-to-peer Architecture), framework per lo sviluppo di applicazioni distribuite attraverso la condivisione di risorse in una rete peer-to-peer, e Jxta-Soap che consente la condivisione di Web Services in una rete peer-to-peer JXTA. Le applicazioni realizzate spaziano dall'ambito della logistica, alla creazione di comunità per l'e-learning, all'Ambient Intelligence alla gestione delle emergenze, ed hanno come denominatore comune la creazione di reti eterogenee e la condivisione di risorse anche tra dispositivi mobili. Viene inoltre messo in evidenza come tali applicazioni possano essere ottimizzate mediante l'introduzione del framework NAM descritto, per consentire la condivisione di diversi tipi di risorse in modo efficiente e proattivo

ETSI: A Case Study in Standard Setting and Capture

This thesis analyses the problem of patent holdup in the European ICT standardisation process with regard to wireless telecommunications standards. The European standardisation system is based on a co-regulatory model involving collaboration between the European Commission and ETSI with the goal to promote innovation, competition, and consumer welfare via the promulgation of interoperability, harmonised, standards. Often however proprietors of standard essential patents (SEPs) opportunistically holdup users/implementers of SEPs. The thesis maintains that, despite existing soft-law mechanisms and antitrust measures, patent holdup is an issue that can readily recur, and attributes this to the capture of the co-regulatory regime. It shows that the soft-law mechanisms, including the ETSI IPR Policy, FRAND terms, European Commission’s Guidelines and its policy initiatives and strategies for achieving the European Digital Single Market, are insufficient to mitigate patent holdup. This thesis set out to determine whether patent holdup is a form of regulatory capture undermining the public interest rationale of standard setting. To do so, first, it frames patent holdup in theory and practice. Second, it scrutinises the dynamics of co-regulation in standard setting and how patent holdup is factored into the regulatory capture paradigm. Third, it analyses how theories of regulation, particularly agency theory, inform this assessment and therefore diagnose regulatory capture in EU ICT standard setting. Finally, the thesis investigates the possibility for ex ante regulatory and ex post competition law tools to enable policy recommendations. This analysis therefore ultimately contributes to the scholarship with regard to the regulation of strategic and opportunistic behaviour of SEP holders. This study should, therefore, be of value to identifying effective measures to restore balance in standard setting consistent with the public interest. This becomes even more important as wireless telecommunications standards have been an intrinsic component to the formation of the European Digital Single Market

Internet of Things-aided Smart Grid: Technologies, Architectures, Applications, Prototypes, and Future Research Directions

Traditional power grids are being transformed into Smart Grids (SGs) to address the issues in existing power system due to uni-directional information flow, energy wastage, growing energy demand, reliability and security. SGs offer bi-directional energy flow between service providers and consumers, involving power generation, transmission, distribution and utilization systems. SGs employ various devices for the monitoring, analysis and control of the grid, deployed at power plants, distribution centers and in consumers' premises in a very large number. Hence, an SG requires connectivity, automation and the tracking of such devices. This is achieved with the help of Internet of Things (IoT). IoT helps SG systems to support various network functions throughout the generation, transmission, distribution and consumption of energy by incorporating IoT devices (such as sensors, actuators and smart meters), as well as by providing the connectivity, automation and tracking for such devices. In this paper, we provide a comprehensive survey on IoT-aided SG systems, which includes the existing architectures, applications and prototypes of IoT-aided SG systems. This survey also highlights the open issues, challenges and future research directions for IoT-aided SG systems

Investigation of a hierarchical context-aware architecture for rule-based customisation of mobile computing service

The continuous technical progress in mobile device built-in modules and embedded sensing techniques creates opportunities for context-aware mobile applications. The context-aware computing paradigm exploits the relevant context as implicit input to characterise the user and physical environment and provide a computing service customised to the contextual situation. However, heterogeneity in techniques, complexity of contextual situation, and gap between raw sensor data and usable context keep the techniques from truly integration for extensive use. Studies in this area mainly focus on feasibility demonstration of the emerging techniques, and they lack general architecture support and appropriate service customisation strategy. This investigation aims to provide general system architecture and technical approaches to deal with the heterogeneity problem and efficiently utilise the dynamic context towards proactive computing service that is customised to the contextual situation. The main efforts of this investigation are the approaches to gathering, handling, and utilising the dynamic context information in an efficient way and the decision making and optimisation methods for computing service customisation. In brief, the highlights of this thesis cover the following aspects: (1) a hierarchical context-aware computing architecture supporting interoperable distribution and further use of context; (2) an in-depth analysis and classification of context and the corresponding context acquisition methods; (3) context modelling and context data representation for efficient and interoperable use of context; (4) a rule-based service customisation strategy with a rule generation mechanism to supervise the service customisation. In addition, feasibility demonstration of the proposed system and contribution justification of this investigation are conducted through case studies and prototype implementations. One case study uses mobile built-in sensing techniques to improve the usability and efficiency of mobile applications constrained by resource limitation, and the other employs the mobile terminal and embedded sensing techniques to predict users’ expectations for home facility automatic control. Results demonstrate the feasibility of the proposed context handling architecture and service customisation methods. It shows great potential for employing the context of the computing environment for context-aware adaptation in pervasive and mobile applications but also indicates some underlying problems for further study

An investigation of mobile augmented reality-based learning features in cognitive and affective environments

This research focuses on the effectiveness of using mobile Augmented Reality (mAR) for learning. Prior research has focused primarily on developing virtual contents for Augmented Reality (AR) and has largely ignored AR in the mobile context. Herein, this research primarily aims to examine the effectiveness of learning through two modes: mobile Augmented Reality (mAR) and the Current Learning Mode (CLM). This research is extended to the development stage of a theoretical model, to evaluate the ability of mAR in improving the learning outcomes that guide a further consideration of growth in learning. The first phase of this thesis is to examine the impact of how mAR influences the learning outcomes in cognitive ability and affective learning outcomes. The cognitive outcome was measured by the experimental method of using pre/ post-test performance achievement, while the affective learning outcome was measured by perceived usefulness, self-efficacy and satisfaction. This research contributes to cognitive ability and affective learning by investigating the differences in the learning outcomes and performance achievements of mAR within a self-centred learning environment, a classroom. The findings show that students’ performance achievement, learning outcomes, perceived learning effectiveness and self-efficacy were greater in the mAR group, as compared to the CLM group. Second, a theoretical model was developed and analysed using Structural Equation Modelling (SEM). SEM examines significant relationships between the determinants that integrate and facilitate effective mAR-based learning environments. SEM produces a feasible alternative in measuring the causal relationship amongst the constructs. This model evaluates to implement mAR as a learning aid in student-centred learning and to evaluate the motivation among students through the features of mAR, due to the absence of an in-depth understanding of the motivation of mAR-based learning from the current literature. This model also provides an insight into the causal factors amongst the dimensions of mAR. Finally, in the model, the moderating effects of students’ characteristics, which include their experience and age, are investigated to determine the factors influencing mAR. The findings of this research will help to verify the learning effectiveness of mAR, to improve the learning experiences, learning outcomes and performance achievements of students. Based on the results, it is confirmed that mAR can be leveraged upon and used as an optimum learning tool, exemplifying the use of technology within an educational context. In the aspects of information retention and learning outcome enhancement, mAR is significant in education as it facilitates students’ understanding by supporting abstract ideas throughout the course, enabling the students to learn in a limited period. Based on the results, it can be concluded that mAR is a technology that aids students with a better understanding of the subject matter and hence, resulting in greater motivation. With regards to the model fitness via the analysis of goodness-of-fit, all the results are confirmed as appropriate and good fit. Also, the model also shows a positive causal path from the mAR features’ determinant. The thesis can also assist educational administrators and educational policy makers in gauging the importance of mAR as a learning tool. This helps mainly to overcome the issue of educators being criticised for the lack of real-life experience that is being exposed to students at the university level. Furthermore, academia can use the model’s findings as appropriate groundwork to initiate other related studies, and this will help to fill the gap in the mAR learning area

Videos in Context for Telecommunication and Spatial Browsing

The research presented in this thesis explores the use of videos embedded in panoramic imagery to transmit spatial and temporal information describing remote environments and their dynamics. Virtual environments (VEs) through which users can explore remote locations are rapidly emerging as a popular medium of presence and remote collaboration. However, capturing visual representation of locations to be used in VEs is usually a tedious process that requires either manual modelling of environments or the employment of specific hardware. Capturing environment dynamics is not straightforward either, and it is usually performed through specific tracking hardware. Similarly, browsing large unstructured video-collections with available tools is difficult, as the abundance of spatial and temporal information makes them hard to comprehend. At the same time, on a spectrum between 3D VEs and 2D images, panoramas lie in between, as they offer the same 2D images accessibility while preserving 3D virtual environments surrounding representation. For this reason, panoramas are an attractive basis for videoconferencing and browsing tools as they can relate several videos temporally and spatially. This research explores methods to acquire, fuse, render and stream data coming from heterogeneous cameras, with the help of panoramic imagery. Three distinct but interrelated questions are addressed. First, the thesis considers how spatially localised video can be used to increase the spatial information transmitted during video mediated communication, and if this improves quality of communication. Second, the research asks whether videos in panoramic context can be used to convey spatial and temporal information of a remote place and the dynamics within, and if this improves users' performance in tasks that require spatio-temporal thinking. Finally, the thesis considers whether there is an impact of display type on reasoning about events within videos in panoramic context. These research questions were investigated over three experiments, covering scenarios common to computer-supported cooperative work and video browsing. To support the investigation, two distinct video+context systems were developed. The first telecommunication experiment compared our videos in context interface with fully-panoramic video and conventional webcam video conferencing in an object placement scenario. The second experiment investigated the impact of videos in panoramic context on quality of spatio-temporal thinking during localization tasks. To support the experiment, a novel interface to video-collection in panoramic context was developed and compared with common video-browsing tools. The final experimental study investigated the impact of display type on reasoning about events. The study explored three adaptations of our video-collection interface to three display types. The overall conclusion is that videos in panoramic context offer a valid solution to spatio-temporal exploration of remote locations. Our approach presents a richer visual representation in terms of space and time than standard tools, showing that providing panoramic contexts to video collections makes spatio-temporal tasks easier. To this end, videos in context are suitable alternative to more difficult, and often expensive solutions. These findings are beneficial to many applications, including teleconferencing, virtual tourism and remote assistance

Multi-dimensional Approaches Towards New Technology

This open access edited book captures the complexities and conflicts arising at the interface of intellectual property rights (IPR) and competition law. To do so, it discusses four specific themes: (a) policies governing functioning of standard setting organizations (SSOs), transparency and incentivising future innovation; (b) issue of royalties for standard essential patents (SEPs) and related disputes; (c) due process principles, procedural fairness and best practices in competition law; and (d) coherence of patent policies and consonance with competition law to support innovation in new technologies. Many countries have formulated policies and re-oriented their economies to foster technological innovation as it is seen as a major source of economic growth. At the same time, there have been tensions between patent laws and competition laws, despite the fact that both are intended to enhance consumer welfare. In this regard, licensing of SEPs has been debated extensively, although in most instances, innovators and implementers successfully negotiate licensing of SEPs. However, there have been instances where disagreements on royalty base and royalty rates, terms of licensing, bundling of patents in licenses, pooling of licenses have arisen, and this has resulted in a surge of litigation in various jurisdictions and also drawn the attention of competition/anti-trust regulators. Further, a lingering lack of consensus among scholars, industry experts and regulators regarding solutions and techniques that are apposite in these matters across jurisdictions has added to the confusion. This book looks at the processes adopted by the competition/anti-trust regulators to apply the principles of due process and procedural fairness in investigating abuse of dominance cases against innovators

High-Performance Modelling and Simulation for Big Data Applications

This open access book was prepared as a Final Publication of the COST Action IC1406 “High-Performance Modelling and Simulation for Big Data Applications (cHiPSet)“ project. Long considered important pillars of the scientific method, Modelling and Simulation have evolved from traditional discrete numerical methods to complex data-intensive continuous analytical optimisations. Resolution, scale, and accuracy have become essential to predict and analyse natural and complex systems in science and engineering. When their level of abstraction raises to have a better discernment of the domain at hand, their representation gets increasingly demanding for computational and data resources. On the other hand, High Performance Computing typically entails the effective use of parallel and distributed processing units coupled with efficient storage, communication and visualisation systems to underpin complex data-intensive applications in distinct scientific and technical domains. It is then arguably required to have a seamless interaction of High Performance Computing with Modelling and Simulation in order to store, compute, analyse, and visualise large data sets in science and engineering. Funded by the European Commission, cHiPSet has provided a dynamic trans-European forum for their members and distinguished guests to openly discuss novel perspectives and topics of interests for these two communities. This cHiPSet compendium presents a set of selected case studies related to healthcare, biological data, computational advertising, multimedia, finance, bioinformatics, and telecommunications

Robust, Resilient Networked Communication in Challenged Environments

In challenged environments, digital communication infrastructure may be difficult or even impossible to access. This is especially true in rural and developing regions, as well as in any region during a time of political or environmental crisis. We advance the state of the art in wireless networking and security to design networks and applications that rapidly assess changing networking conditions to restore communication and provide local situational awareness. This dissertation examines new systems for responding to current and emerging needs for wireless networks. This work looks across the wireless ecosystem of widely deployed standards. We develop new tools to improve network assessment and to provide robust and reliable network communication. By incorporating new technological breakthroughs, such as the wide commercial success of Unmanned Aircraft Systems (UAS), we introduce novel methods and systems for existing wireless standards for these challenged networks. We assess how existing technologies and standards function in difficult environments: lacking end-end Internet connectivity, experiencing overload or other resource constraints, and operating in three dimensional space. Through this lens, we demonstrate how to optimize networks to serve marginalized communities outside of first world urban cities and make our networks resilient to natural and political crisis that threaten communication

Brave New Wireless World: Mapping the Rise of Ubiquitous Connectivity from Myth to Market

This dissertation offers a critical and historical analysis of the myth of ubiquitous connectivity—a myth widely associated with the technological capabilities offered by “always on” Internet-enabled mobile devices like smartphones and tablets. This myth proclaims that work and social life are optimized, made more flexible, manageable, and productive, through the use of these devices and their related services. The prevalence of this myth—whether articulated as commercial strategy, organizational goal, or mode of social mediation—offers repeated claims that the experience and organization of daily life has passed a technological threshold. Its proponents champion the virtues of the invisible “last mile” tethering individuals (through their devices) primarily to commercial networks. The purpose of this dissertation is to uncover the interaction between the proliferation of media artifacts and the political economic forces and relations occluded by this myth. To do this, herein the development of the BlackBerry, as a specific brand of devices and services, is shown to be intimately interrelated with the myth of ubiquitous connectivity. It demonstrates that the BlackBerry is a technical artifact whose history sheds light on key characteristics of our media environment and the political economic dynamics shaping the development of other technologies, workforce composition and management, and more general consumption proclivities. By pointing to the analytic significance of the BlackBerry, this work does not intend to simply praise its creators for their technical and commercial achievements. Instead, it aims to show how these achievements express a synthesis that represents the motivations of economic actors and prevailing modes of thought most particularly as they are drawn together in and through the myth of ubiquitous connectivity. The narrative arc of this dissertation is anchored by moments of harmonization among political economic interests as these shape (and are shaped by) prevailing modes of producing and relating through ubiquitous connectivity