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 Snake-inspired robot uses kirigami to move
22.02.2018 | Harvard John A. Paulson School of Engineering and Applied Sciences

nachricht Camera technology in vehicles: Low-latency image data compression
22.02.2018 | Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI

All articles from Information Technology >>>

The most recent press releases about innovation >>>

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

Im Focus: Attoseconds break into atomic interior

A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.

In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...

Im Focus: Good vibrations feel the force

A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.

By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...

Im Focus: Developing reliable quantum computers

International research team makes important step on the path to solving certification problems

Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...

Im Focus: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

Basque researchers turn light upside down

23.02.2018 | Physics and Astronomy

Finnish research group discovers a new immune system regulator

23.02.2018 | Health and Medicine

Attoseconds break into atomic interior

23.02.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>