27 research outputs found

    Experimental evaluation in wireless communications

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    This editorial sums up relevant topics on the assessment of wireless communication systems covered by the especial issue entitled "Experimental Evaluation in Wireless Communications". The topics include practical aspects on the implementation of distributed asynchronous non-linear kernel methods over wireless sensor networks; localization methods based on the exploitation of radio-frequency identification (RFID) wireless sensors and cellular networks or on sparsity approximations; channel sounding and assessment of broadband orthogonal frequency-division multiplexing (OFDM)-based wireless systems in high-speed vehicular communications; coexistence analysis of femtocell-based and outdoor-to-indoor systems; techniques for peak-to-average power ratio (PAPR) reduction; new solutions for baseband and radio frequency (RF) hardware impairments in full-duplex wireless systems; and, finally, suitability of interference alignment for broadband indoor wireless communications

    In the wild pilot usability assessment of a connected health system for stroke self management

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    UK Engineering Physical Sciences Research Council (EPSRC) under grant EP/P010105/1

    The effects of discipline on the application of learning object metadata in UK higher education : the case of the Jorum repository

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    This paper reports on the findings of a study investigating the potential effects of discipline (sciences and engineering versus humanities and social sciences) on the application of the Istitute of Electrical and Electronic Engineers learning object metadata elements for the description of learning objects in the Jorum learning object repository. Method. A survey was conducted that examined a stratified sample of 470 metadata records and surrogates used for the description of learning objects in the Jorum repository. A quantitative data analysis was performed based on the sample. This included descriptive statistics as well as a set of Chi squared tests for the identification of differences in the application of learning object metadata elements between disciplines. The results of this study showed that some metadata elements tended to be more frequently applied for the description of learning objects in the humanities and social sciences than in sciences and engineering. These were: interactivity type, difficulty, aggregation level, coverage, structure and semantic density. The findings of this study could have implications for the design of metadata editors and annotation tools, as well as the development of metadata training programmes

    Greek academic librarians' perceptions of the impact of Google on their role as information providers

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    The increased popularity of Google search engine in the daily routine in one's workplace and in the academic information seeking process is undeniable. 'Googling' challenges the traditional skills of librarians as information providers and the role of library and information service provision in the digital era. This paper reports on the preliminary findings of a qualitative study investigating the perceptions of Greek academic librarians on the impact of Google and 'Googling' on their role as information providers in the digital era. To address the needs of this study a set of semi structured interviews was employed with library managers and librarians. The findings of this study revealed that Greek academic librarians use mainly Google Search for its easy information provision but advise on adequate training on Google sources evaluation before use. It was suggested that libraries need to support life-long learning, and enhance their services quality in order to survive. Additionally, IT and managerial skills acquisition seems to be vital. Research also revealed the essential role of LIS departments in the provision of life-long learning and the organisation of training programmes. © 2008 - IOS Press and the authors. All rights reserved

    Why “one size fits all” is not enough when designing COVID-19 immunity certificates for domestic use: a UK wide cross-sectional online survey

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    Corina-Elena Niculaescu ORCID 0000-0002-8971-0812; Isabel Karen Sassoon ORCID 0000-0002-8685-1054; Irma Cecilia Landa-Avila ORCID 0000-0001-6107-6736; Ozlem Colak ORCID 0000-0003-0813-2561; Gyuchan Thomas Jun ORCID 0000-0002-0958-0107; Panagiotis Balatsoukas ORCID 0000-0002-2454-0816. Data availability statement: The data is available in a public, open access repository. All statistical code, dataset, survey item and ethical approval are available on OSF (https://osf.io/jubv6/), DOI 10.17605/OSF.IO/JUBV6.IMMUNE or Immunity Passport Service Design is a nine-month project funded by the AHRC/UKRI COVID-19 Rapid Response (Ref. AH/W000288/1)
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