نتایج جستجو برای: counterfeit

تعداد نتایج: 1306  

Journal: :Nature Nanotechnology 2017

2009
Marcel Tresanchez Tomàs Pallejà Mercè Teixidó Jordi Palacín

In this paper, the sensor of an optical mouse is presented as a counterfeit coin detector applied to the two-Euro case. The detection process is based on the short distance image acquisition capabilities of the optical mouse sensor where partial images of the coin under analysis are compared with some partial reference coin images for matching. Results show that, using only the vision sense, th...

2000
Mahalingam Ramkumar Ali N. Akansu

We explore the problem of proving ownership or origin of multimedia content like image / video or audio signals through watermarking. The need for watermarking arises out of the unsuitability of present copyright laws for claiming ownership of digital content. Watermarking schemes however, are threatened by counterfeit attacks, which primarily use the freedom available in the choice of signatur...

2017
James Thorne Mingjie Chen Giorgos Myrianthous Jiashu Pu Xiaoxuan Wang Andreas Vlachos

Fake news has become a hotly debated topic in journalism. In this paper, we present our entry to the 2017 Fake News Challenge which models the detection of fake news as a stance classification task that finished in 11th place on the leader board. Our entry is an ensemble system of classifiers developed by students in the context of their coursework. We show how we used the stacking ensemble met...

2013
Tejpreet Chadha Ralph Ferguson

Counterfeiting established a global problem that resulted in deliberate supply chain corruption where degraded drugs led to therapeutic failures and deaths. The active ingredient in counterfeit drugs replaced by lesser quantity of the active chemical agent, sugar, chalk and sometimes toxic compounds that counterfeiters can increase their profit selling the degraded product at a lower price. In ...

2016
Bernard Naughton Lindsey Roberts Sue Dopson Stephen Chapman David Brindley

OBJECTIVES To identify the authentication and detection rate of serialised medicines using medicines authentication technology. DESIGN AND INTERVENTION 4192 serialised medicines were entered into a hospital dispensary over two separate 8-week stages in 2015. Medicines were authenticated using secure external database cross-checking, triggered by the scanning of a two-dimensional data matrix w...

Journal: :Canadian Medical Association Journal 2009

Journal: :SIAM Journal on Computing 1982

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