Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Reliable cup of coffee

16.04.2007
Dutch-sponsored researcher Laura Brandán Briones has elevated software testing to a higher level.

She improved both the tests and the method to determine the reliability of the tests. This means, for example, that washing machines and coffee machines can be tested far better before they are launched on the market.

Brandán Briones made several considerable improvements. First of all she made it possible to include the factor 'time' in the testing. Not only can it be determined if coffee actually comes out of the machine but also how long that takes.

Brandán Briones developed a good measure for establishing the reliability of the tests. This can be achieved by determining which part of the system has been tested: the degree of coverage. An equally large problem during the testing of software is the gigantic number of scenarios that a system offers. This is more than the number of elementary particles in the universe. It is therefore impossible to test all of these. The degree of coverage is a measure of the reliability of the system. If you have a coffee machine with tea and coffee and you test all of the possible options that supply coffee then you have a degree of coverage of 50%.

The old method for determining this degree of coverage assumed all possible processes in a system to make, for example, a cup of black coffee. However the system can deliver the same cup of coffee in various ways. Using the method of Brandán Briones all of the different ways are assigned the same value. Therefore the degree of coverage no longer varies.

Severity
The method Brandán Briones has developed is the first that also takes into account the severity of possible errors. This is a major advantage for companies that want to make a risk estimate. Taking into account the importance of the errors provides a far more accurate and realistic measure of reliability. It is far worse if you get milk in black coffee than that the strength is not exactly right.

Computer chip manufacturer ASML has followed the work of Brandán Briones with interest and is currently making use of it. The research of Brandán Briones was part of the NWO project Systematic Testing of Realtime Embedded Software Systems (STRESS).

Laura Brandán Briones | alfa
Further information:
http://www.utwente.nl

More articles from Information Technology:

nachricht The TU Ilmenau develops tomorrow’s chip technology today
27.04.2017 | Technische Universität Ilmenau

nachricht Five developments for improved data exploitation
19.04.2017 | Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Fighting drug resistant tuberculosis – InfectoGnostics meets MYCO-NET² partners in Peru

28.04.2017 | Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

 
Latest News

Wireless power can drive tiny electronic devices in the GI tract

28.04.2017 | Medical Engineering

Ice cave in Transylvania yields window into region's past

28.04.2017 | Earth Sciences

Nose2Brain – Better Therapy for Multiple Sclerosis

28.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>