When Tim Berners-Lee invented the World Wide Web 15 years ago, he always intended that it should be easy for people to write to it, not just read from it. But if websites are opened up to anyone, they often get vandalised by people with axes to grind. Now, a researcher from Manchester has brought together two of computing’s current buzzwords - the Grid, and Wikis – to overcome this problem.
A Wiki is a web site where users can easily add and edit its content. Although some Wikis ask contributors to pick a username and password, people running the sites have no idea who their users really are, and the better known Wikis have to be constantly on the look out for offensive or just irrelevant additions. The new open source software, GridSiteWiki, combines the functions of a Wiki with user authentication based on security tools developed for Grid computing. Dr Andrew McNab of Manchester University, who developed the new software, will be speaking on Grid security at the UK e-Science All Hands Conference in Nottingham on Thursday.
Dr McNab explains, “Wikis have been plagued with problems of trust and identity: how do you deal with internet vandals using fake accounts? Now were able to tie in with the security being rolled out for the Grid, we can finally make a Web where you can visit a website for the first time and start contributing straight away, without the administrators having to worry about anonymous vandals with fake identities."
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New standard helps optical trackers follow moving objects precisely
23.11.2016 | National Institute of Standards and Technology (NIST)
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
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The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
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