نتایج جستجو برای: opacity

تعداد نتایج: 7090  

Journal: :Discrete Event Dynamic Systems 2021

Opacity is an information flow property characterizing whether a system reveals its secret to passive observer. Several notions of opacity have been introduced in the literature. We study language-based opacity, current-state initial-state initial-and-final-state K-step and infinite-step opacity. Comparing natural question that has investigated summarized by Wu Lafortune, who provided transform...

Journal: :CoRR 2017
Rym Zrelli Mohamed Moez Yeddes Nejib Ben Hadj-Alouane

The Internet of Things (IoT) is a paradigm that can tremendously revolutionize health care thus benefiting both hospitals, doctors and patients. In this context, protecting the IoT in health care against interference, including service attacks and malwares, is challenging. Opacity is a confidentiality property capturing a system’s ability to keep a subset of its behavior hidden from passive obs...

2012
Jue Wang Jiri Svec Maurice Peat

This study addresses the counterintuitive result produced by the Duffie and Lando (2001) incomplete information model by remodelling its asset density function with added positive bias. We call this new model biased information model. The theory is then applied to study the effect of fiscal opacity on the levels and term structure of sovereign credit spreads. We make use of new panel datasets s...

2005
Pieter Peers Vincent Masselus Philip Dutré

This report focuses on the acquisition of shape and appearance of real objects under static illumination without the need for an elaborate calibration process or an expensive setup. Emphasis is placed on ease of use and obtaining visually pleasing results. Using recent advances in matting techniques, an opacity hull of the object is computed from an un-calibrated sequence of photographs. User i...

Journal: :The British journal of ophthalmology 1990
S J Tuft F W Fitzke J Lawrenson J Silver J Marshall

A clinical trial was undertaken to determine whether a commercially available lens opacity meter (LM701), which measures backward scattered light from the lens, provides reliable clinical information about the effect of lens opacities on visual acuity. At the 0.001 level of probability we found a significant relationship between the lens opacity meter reading and both the Snellen acuity and pat...

Journal: :Hong Kong Journal of Emergency Medicine 2020

Journal: :Accounting and Finance Research 2016

Journal: :Monthly Notices of the Royal Astronomical Society 1972

Journal: :International Astronomical Union Colloquium 1994

Journal: :Journal of Bacteriology 1992

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