Sharing and Access Right Delegation for Confidential Documents: A Practical Solution

This paper addresses a practical problem in Document Management Systems for which no existing solution is available in the market. To store confidential documents in a Document Management System, a common approach is to keep only the encrypted version of the documents to ensure the confidentiality of the contents. However, how to share these encrypted documents and how to delegate the access rights of these documents are not straightforward while these operations are common in most companies. In this paper, we discuss the issues related to this problem and provide a practical and easy-to-implement solution for solving the problem. Our solution has been shown to be feasible by a prototype implementation. We also show how to extend our solution to take advantage of the hierarchical structure of a company to make it more scalable. As a remark, this problem was initiated by a local company based on its actual needs to fulfil a set of business objectives and requirements

Grouping-Enabled and Privacy-Enhancing Communications Schemes for VANETs

Open Access Bookpublished_or_final_versio

Global reporting of cases of COVID-19 in psoriasis and atopic dermatitis: an opportunity to inform care during a pandemic.

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Studies of jet quenching using isolated-photon + jet correlations in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV

Results from the first study of isolated-photon + jet correlations in relativistic heavy ion collisions are reported. The analysis uses data from PbPb collisions at a centre-of-mass energy of 2.76 TeV per nucleon pair corresponding to an integrated luminosity of 150 inverse microbarns recorded by the CMS experiment at the LHC. For events containing an isolated photon with transverse momentum pt(gamma) > 60 GeV and an associated jet with pt(Jet) > 30 GeV, the photon + jet pt imbalance is studied as a function of collision centrality and compared to pp data and PYTHIA calculations at the same collision energy. Using the pt(gamma) of the isolated photon as an estimate of the momentum of the associated parton at production, this measurement allows an unbiased characterisation of the in-medium parton energy loss. For more central PbPb collisions, a significant decrease in the ratio pt(Jet)/pt(gamma) relative to that in the PYTHIA reference is observed. Furthermore, significantly more pt(gamma) > 60 GeV photons in PbPb are observed not to have an associated pt(Jet) > 30 GeV jet, compared to the reference. However, no significant broadening of the photon + jet azimuthal correlation is observed.Comment: Submitted to Physics Letters

Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries

A guide to prepare a building maintenance manual

The main purpose of this book is to provide a practical guidance on the preparation of a BMM, which is comply with the requirements stipulated in the Revised Guidelines for Deeds of Mutual Covenant (DMC) published by the Legal Advisory and Conveyancing Office (LACO) of the Lands Department in 2006. This Guide is tailor made for Hong Kong practice and is applicable for various types of buildings like residential, commercial, industrial buildings and composite buildings no matter they are multi-owned or not. The Guide is divided into three volumes, namely, the General Building Records Manual (GBRM), the Works and Installations Manual (WIM) and the Supplementary Information Manual (SIM) with two appendices and two annexes. Appendix I provided recommended maintenance cycle to various Works and Installations. Appendix II provided sample templates for the BMM. Annexes 1 and 2 provided handy references of related regulations, international standards and codes of practices on various Works and Installations... (preface

The point placement problem on a line improved bounds for pairwise distance queries

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)4645 LNBI372-38