15 research outputs found
A Storage-Efficient and Robust Private Information Retrieval Scheme Allowing Few Servers
Since the concept of locally decodable codes was introduced by Katz and
Trevisan in 2000, it is well-known that information the-oretically secure
private information retrieval schemes can be built using locally decodable
codes. In this paper, we construct a Byzantine ro-bust PIR scheme using the
multiplicity codes introduced by Kopparty et al. Our main contributions are on
the one hand to avoid full replica-tion of the database on each server; this
significantly reduces the global redundancy. On the other hand, to have a much
lower locality in the PIR context than in the LDC context. This shows that
there exists two different notions: LDC-locality and PIR-locality. This is made
possible by exploiting geometric properties of multiplicity codes
Instruments to measure patient experience of healthcare quality in hospitals: a systematic review
Improving and sustaining the quality of hospital care is an international challenge. Patient experience data can be used to target improvement and research. However, the use of patient experience data has been hindered by confusion over multiple instruments (questionnaires) with unknown psychometric testing and utility.MethodsWe conducted a systematic review and utility critique of questionnaires to measure patient experience of healthcare quality in hospitals. Databases (Medical Literature Analysis and Retrieval System (MEDLINE), Cumulative Index to Nursing and Allied Health Literature (CINAHL), Psychological Information (PsychINFO) and Web of Knowledge until end of November 2013) and grey literature were scrutinised. Inclusion criteria were applied to all records with a 10 % sample independently checked. Critique included (1) application of COSMIN checklists to assess the quality of each psychometric study, (2) critique of psychometric results of each study using Terwee et al. criteria and (3) development and critique of additional aspects of utility for each instrument. Two independent reviewers completed each critique. Synthesis included combining findings in a utility matrix.We obtained 1157 records. Of these, 26 papers measuring patient experience of hospital quality of care were identified examining 11 international instruments. We found evidence of extensive theoretical/development work. The quality of methods and results was variable but mostly of a high standard. Additional aspects of utility found that (1) cost efficiency was mostly poor, due to the resource necessary to obtain reliable samples; (2) acceptability of most instruments was good and (3) educational impact was variable, with evidence on the ease of use, for approximately half of the questionnaires.ConclusionsSelecting the right patient experience instrument depends on a balanced consideration of aspects of utility, aided by the matrix. Data required for high stakes purposes requires a high degree of reliability and validity, while those used for quality improvement may tolerate lower levels of reliability in favour of other aspects of utility (educational impact, cost and acceptability)
Privacy enhancing technologies (PETs) for connected vehicles in smart cities
This is an accepted manuscript of an article published by Wiley in Transactions on Emerging Telecommunications Technologies, available online: https://doi.org/10.1002/ett.4173
The accepted version of the publication may differ from the final published version.Many Experts believe that the Internet of Things (IoT) is a new revolution in technology that has brought many benefits for our organizations, businesses, and industries. However, information security and privacy protection are important challenges particularly for smart vehicles in smart cities that have attracted the attention of experts in this domain. Privacy Enhancing Technologies (PETs) endeavor to mitigate the risk of privacy invasions, but the literature lacks a thorough review of the approaches and techniques that support individuals' privacy in the connection between smart vehicles and smart cities. This gap has stimulated us to conduct this research with the main goal of reviewing recent privacy-enhancing technologies, approaches, taxonomy, challenges, and solutions on the application of PETs for smart vehicles in smart cities. The significant aspect of this study originates from the inclusion of data-oriented and process-oriented privacy protection. This research also identifies limitations of existing PETs, complementary technologies, and potential research directions.Published onlin
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2020 Proceedings of the 3rd International Conference on Trauma Surgery Technology in Giessen
The 3
rd event of the Giessen International Conference on Trauma Surgery Technology on
October, the 17th 2020 was hosted on Zoom in accordance with the worldwide corona
situation. Dr Mieczakowski, Dr Yu, and Wolfram drafted in 2018 from Janâs apartment in Bremen the
manuscript which was submitted to and approved for funding by the Deutsche
Forschungsgemeinschaft (DFG). At that time, we had no idea what substantial changes the
conferencing concept would require. This is why we would like to thank again Michele. She first
planned this yearâs event after the 2019 date and then in the spring of 2020 had to replan for the
new situation
Effets de traitements fongicides aux imides cycliques sur les populations de Sclerotinia minor dans le sol.
National audienc
Bloodâcirculating EVâmiRNAs, serum TARC, and quantitative FDGâPET features in classical Hodgkin lymphoma
Abstract Bloodâbased biomarkers are gaining interest for response evaluation in classical Hodgkin lymphoma (cHL). However, it is unknown how bloodâbased biomarkers relate to quantitative 18FâFDGâPET features. We correlated extracellular vesicleâassociated miRNAs (EVâmiRNA), serum TARC, and complete blood count (CBC) with PET features (e.g., metabolic tumor volume [MTV], dissemination and intensity features) in 30 cHL patients at baseline. EVâmiR127â3p, EVâmiR24â3p, sTARC, and several CBC parameters showed weak to strong correlations with MTV and dissemination features, but not with intensity features. Two other EVâmiRNAs only showed weak correlations with PET features. Therefore, bloodâbased biomarkers may be complementary to PET features, which warrants further exploration of combining these biomarkers in prognostic models