781 research outputs found

    Cloud Services Brokerage for Mobile Ubiquitous Computing

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    Recently, companies are adopting Mobile Cloud Computing (MCC) to efficiently deliver enterprise services to users (or consumers) on their personalized devices. MCC is the facilitation of mobile devices (e.g., smartphones, tablets, notebooks, and smart watches) to access virtualized services such as software applications, servers, storage, and network services over the Internet. With the advancement and diversity of the mobile landscape, there has been a growing trend in consumer attitude where a single user owns multiple mobile devices. This paradigm of supporting a single user or consumer to access multiple services from n-devices is referred to as the Ubiquitous Cloud Computing (UCC) or the Personal Cloud Computing. In the UCC era, consumers expect to have application and data consistency across their multiple devices and in real time. However, this expectation can be hindered by the intermittent loss of connectivity in wireless networks, user mobility, and peak load demands. Hence, this dissertation presents an architectural framework called, Cloud Services Brokerage for Mobile Ubiquitous Cloud Computing (CSB-UCC), which ensures soft real-time and reliable services consumption on multiple devices of users. The CSB-UCC acts as an application middleware broker that connects the n-devices of users to the multi-cloud services. The designed system determines the multi-cloud services based on the user's subscriptions and the n-devices are determined through device registration on the broker. The preliminary evaluations of the designed system shows that the following are achieved: 1) high scalability through the adoption of a distributed architecture of the brokerage service, 2) providing soft real-time application synchronization for consistent user experience through an enhanced mobile-to-cloud proximity-based access technique, 3) reliable error recovery from system failure through transactional services re-assignment to active nodes, and 4) transparent audit trail through access-level and context-centric provenance

    Immersive interconnected virtual and augmented reality : a 5G and IoT perspective

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    Despite remarkable advances, current augmented and virtual reality (AR/VR) applications are a largely individual and local experience. Interconnected AR/VR, where participants can virtually interact across vast distances, remains a distant dream. The great barrier that stands between current technology and such applications is the stringent end-to-end latency requirement, which should not exceed 20 ms in order to avoid motion sickness and other discomforts. Bringing AR/VR to the next level to enable immersive interconnected AR/VR will require significant advances towards 5G ultra-reliable low-latency communication (URLLC) and a Tactile Internet of Things (IoT). In this article, we articulate the technical challenges to enable a future AR/VR end-to-end architecture, that combines 5G URLLC and Tactile IoT technology to support this next generation of interconnected AR/VR applications. Through the use of IoT sensors and actuators, AR/VR applications will be aware of the environmental and user context, supporting human-centric adaptations of the application logic, and lifelike interactions with the virtual environment. We present potential use cases and the required technological building blocks. For each of them, we delve into the current state of the art and challenges that need to be addressed before the dream of remote AR/VR interaction can become reality

    Cloud enabled 3D tablet design for medical applications

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    The prime objective of any technological innovation is to improve the life of people. Technological innovation in the field of medical devices directly touches the lives of millions of people; not just patients but doctors and other technicians as well. Serving these care givers is serving humanity. Growth of Mobil Devices and Cloud Computing has changed the way we live and work. We try to bring the benefits of these technological innovations to the medical field via equipment which can improve the working efficiencies and capabilities of the medical professionals and technicians. The improvements in the camera and image processing capabilities of the Mobile Devices coupled with their improved processing power and an infinite processing and storage offered by Cloud Computing infrastructure opens up a window of opportunity to use them in the specialized field like microsurgery. To enable microsurgery, surgeons use optical microscope to zoom into the working area to get better visibility and control. However, these devices suffer from various drawbacks and are not comfortable to use. We build a Tablet with large stereoscopic screen allowing glasses free 3D display enabled by cameras capable of capturing 3D video and enhanced by an image processing pipeline, greatly improves the visibility and viewing comfort of the surgeon. Moreover using the capabilities of Cloud computing, these surgeries can be recorded and streamed live for education, training and consultation. An expert sitting in a geographically remote location can guide the surgeon performing the surgery. All vital parameters of the patient undergoing surgery can be shown as an overlay on the Tablet screen so that the surgeon is alerted of any parameter going beyond limit. Developing this kind of complex device involves engineering skills in hardware and software and huge amount of investments in terms of time, resources and money. To accelerate the development, we make use of open source hardware and software and demonstrate how we can accelerate the development using these open source resources

    IoT based model of healthcare for physiotherapy

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    Trabalho apresentado em 13th International Conference on Sensing Technology (ICST 2019), dezembro 2019, Sydney, Austrália.Small and reliable devices that are used not only in clinics or hospital but also in home, give information on movements, activities or other relevant data on person health and functioning. The data acquired by these devices would increase the accessibility to healthcare services and quality of care, in a safe environment. There are scarce data related to integration of Internet of Things (IoT) technologies into information system for physiotherapy or motor rehabilitation. In this work it is presented a framework for IoT based information system for physiotherapy. The presented model for physiotherapy includes: the capacity of IoT based information system to receive inputs from different modalities; support for modularity and common communication technologies for IoT; gateway capabilities and/or edge computing; data storage and analysis in Server, Cloud Server or Microservices. Research is needed for better understanding what is the optimal model and architecture for IoT platforms targeting people with different types of disabilities, as well as an optimal universal design that may increase the quality of care for people with disability.info:eu-repo/semantics/publishedVersio

    Supporting Cyber-Physical Systems with Wireless Sensor Networks: An Outlook of Software and Services

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    Sensing, communication, computation and control technologies are the essential building blocks of a cyber-physical system (CPS). Wireless sensor networks (WSNs) are a way to support CPS as they provide fine-grained spatial-temporal sensing, communication and computation at a low premium of cost and power. In this article, we explore the fundamental concepts guiding the design and implementation of WSNs. We report the latest developments in WSN software and services for meeting existing requirements and newer demands; particularly in the areas of: operating system, simulator and emulator, programming abstraction, virtualization, IP-based communication and security, time and location, and network monitoring and management. We also reflect on the ongoing efforts in providing dependable assurances for WSN-driven CPS. Finally, we report on its applicability with a case-study on smart buildings
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