Sökning: "noise techniques"

Visar resultat 11 - 15 av 437 avhandlingar innehållade orden noise techniques.

1. 11. The Diversity and Unity of Reactor Noise Theory

   Författare :Zhifeng Kuang; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; neutron fluctuations; master equations; correlations; stochastic processes; the Langevin technique; power spectra; reactor noise; covariances;

   Sammanfattning : The study of reactor noise theory concerns questions about cause and effect relationships, and the utilisation of random noise in nuclear reactor systems. The diversity of reactor noise theory arises from the variety of noise sources, the various mathematical treatments applied and the various practical purposes. LÄS MER

3. 12. Improving the Performance of Machine Learning-based Methods for Continuous Integration by Handling Noise

   Författare :Khaled Al-Sabbagh; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Continuous Integration; Noise in software programs; Noise-handling; Software regression testing; Code change requests; Build prediction;

   Sammanfattning : Background: Modern software development companies are increasingly implementing continuous integration (CI) practices to meet market demands for delivering high-quality features. The availability of data from CI systems presents an opportunity for these companies to leverage machine learning to create methods for optimizing the CI process. LÄS MER

4. 13. Hierarchical Variance Reduction Techniques for Monte Carlo Rendering

   Författare :Petrik Clarberg; Institutionen för datavetenskap; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; computer graphics; Monte Carlo methods; importance sampling; hierarchical techniques; rendering;

   Sammanfattning : Ever since the first three-dimensional computer graphics appeared half a century ago, the goal has been to model and simulate how light interacts with materials and objects to form an image. The ultimate goal is photorealistic rendering, where the created images reach a level of accuracy that makes them indistinguishable from photographs of the real world. LÄS MER

5. 14. Development of new techniques for the numerical modelling of railway track dynamics. Application to rolling noise assessment

   Författare :Blas Blanco; Leif Kari; Ernesto García-Vadillo; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Track modelling; Timoshenko element; local deformation; distributed supports; moving Green s functions; rolling noise;

   Sammanfattning : The numerical modelling is widely employed for the prediction of the railway track dynamic behaviour, which is of utmost importance for the characterisation of the undesired medium-high frequency phenomena, such as corrugation, wheel-out-of-roundness and noise emission. This study is devoted to the improvement of railway track numerical modelling, the efficient resolution of the problem in the time domain and the assessment of rolling noise for different approaches of the track modelling. LÄS MER

7. 15. Active suppression of vibration and noise in industrial applications

   Författare :Linus Andrén; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Active control technology; Active vibration control; Noise suppression;

   Sammanfattning : Today, active control technology is about to emerge from the research labs into products in various areas. It has become an attractive method where passive techniques have low impact at low frequencies and adding active control to that part is often an attractive solution. LÄS MER