25 research outputs found

    White Space Network Management: Spectrum Quanti cation, Spectrum Allocation and Network Design

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    Philosophiae Doctor - PhD (Computer Science)The unused spectrum in the television broadcasting frequency bands (so-called TV white spaces) can alleviate the spectrum crunch, and have potential to provide broadband connection to rural areas of countries in the developing world. Current research on TV white spaces focuses on how to detect them accurately, and how they can be shared or allocated to secondary devices. Therefore, the focus of this research is three-fold: to investigate a novel distributed framework, which does not use propagation models in detecting TV white spaces, and suitable for use in countries of the developing world; to investigate a suitable spectrum sharing mechanism for short-time leasing of the TV white spaces to secondary devices; and extend the research to investigate the design of a TV white space-ware network in TV white space frequencies

    Drones, Signals, and the Techno-Colonisation of Landscape

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    This research project is a cross-disciplinary, creative practice-led investigation that interrogates increasing military interest in the electromagnetic spectrum (EMS). The project’s central argument is that painted visualisations of normally invisible aspects of contemporary EMS-enabled warfare can reveal useful, novel, and speculative but informed perspectives that contribute to debates about war and technology. It pays particular attention to how visualising normally invisible signals reveals an insidious techno-colonisation of our extended environment from Earth to orbiting satellites

    Aerial Vehicles

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    This book contains 35 chapters written by experts in developing techniques for making aerial vehicles more intelligent, more reliable, more flexible in use, and safer in operation.It will also serve as an inspiration for further improvement of the design and application of aeral vehicles. The advanced techniques and research described here may also be applicable to other high-tech areas such as robotics, avionics, vetronics, and space

    Value in Experience. Design and Evaluation Framework based on Case Studies of Novel Mobile Services

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    The concept of ‘value’ has received extensive interest in research in the fields of psychology, marketing and, more recently, human-computer interaction (HCI). Gaining insights into users’ personal values can lead to a better understanding of user behaviour. However, the concept of value is not clearly defined, and researchers have produced differing views on the conceptualization of the construct. In the past decade, user experience has received considerable attention in HCI research. Yet the relationship between user experience and value has not gained much attention. The goal of this dissertation is to better understand and articulate the value in user experience. The focus is on novel mobile service solutions, taking into account the viewpoint of different user groups. Achieving an understanding of different user groups will greatly help design successful mobile services for target user populations. The empirical foundation for this dissertation is findings concerning user experience from seven individual case studies conducted in the field with the endusers. Interpretive case studies of novel mobile services in varying usage contexts involved different user groups: children, teenagers, college students and vision and memory -impaired older people. An initial value framework is developed as a synthesis from the literature. By utilizing this framework, the user experience findings obtained are re-examined from the point of view of value through a crosscase analysis and synthesis. Based on this analysis, value parameters from individual mobile service case studies are interpreted and categorized. The initial value framework is complemented by relying on the value parameters identified from the case studies. This work contributes to the field of HCI by showing that user experience and value are closely intertwined. The thesis proposes the concept of “value in experience (ViE)”, which refers to the user’s iterative (subconscious and conscious) interpretation and evaluation of user experience with a service. A value design and evaluation framework is presented and demonstrated by evaluating value in experience from the case studies. Also the designer values are analysed and compared with the value in experience. The framework presents a rich description of value dimensions relevant to specific user groups and mobile service domains in varying usage contexts. Furthermore, value in experience design and evaluation guidelines related to different user groups are proposed. The proposed conceptualization of value in experience offers insights to help understand the dimensions of value, and serves as a lens to guide interpretive analysis of value in experience. The complemented value design and evaluation framework is a tool for identifying and describing the key value dimensions for value in experience evaluation. Furthermore, the framework can support service design processes. The cross-case study findings provide insights into the special characteristics of different user groups and their value priorities in specific service domains. Even though the framework is based on mobile services, its main constructs are expected also to be applicable to other types of digital services

    College of Engineering

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    Cornell University Courses of Study Vol. 91 1999/200

    College of Engineering

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    Cornell University Courses of Study Vol. 91 1999/200

    Planetary Science Vision 2050 Workshop : February 27–28 and March 1, 2017, Washington, DC

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    This workshop is meant to provide NASA’s Planetary Science Division with a very long-range vision of what planetary science may look like in the future.Organizer, Lunar and Planetary Institute ; Conveners, James Green, NASA Planetary Science Division, Doris Daou, NASA Planetary Science Division ; Science Organizing Committee, Stephen Mackwell, Universities Space Research Association [and 14 others]PARTIAL CONTENTS: Exploration Missions to the Kuiper Belt and Oort Cloud--Future Mercury Exploration: Unique Science Opportunities from Our Solar System’s Innermost Planet--A Vision for Ice Giant Exploration--BAOBAB (Big and Outrageously Bold Asteroid Belt) Project--Asteroid Studies: A 35-Year Forecast--Sampling the Solar System: The Next Level of Understanding--A Ground Truth-Based Approach to Future Solar System Origins Research--Isotope Geochemistry for Comparative Planetology of Exoplanets--The Moon as a Laboratory for Biological Contamination Research--“Be Careful What You Wish For:” The Scientific, Practical, and Cultural Implications of Discovering Life in Our Solar System--The Importance of Particle Induced X-Ray Emission (PIXE) Analysis and Imaging to the Search for Life on the Ocean Worlds--Follow the (Outer Solar System) Water: Program Options to Explore Ocean Worlds--Analogies Among Current and Future Life Detection Missions and the Pharmaceutical/ Biomedical Industries--On Neuromorphic Architectures for Efficient, Robust, and Adaptable Autonomy in Life Detection and Other Deep Space Missions

    Safety and Reliability - Safe Societies in a Changing World

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    The contributions cover a wide range of methodologies and application areas for safety and reliability that contribute to safe societies in a changing world. These methodologies and applications include: - foundations of risk and reliability assessment and management - mathematical methods in reliability and safety - risk assessment - risk management - system reliability - uncertainty analysis - digitalization and big data - prognostics and system health management - occupational safety - accident and incident modeling - maintenance modeling and applications - simulation for safety and reliability analysis - dynamic risk and barrier management - organizational factors and safety culture - human factors and human reliability - resilience engineering - structural reliability - natural hazards - security - economic analysis in risk managemen
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