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Articles 151 - 153 of 153
Full-Text Articles in Engineering
Colloidal Transport On Magnetic Garnet Filmsw, Tierno Pietro, Frances Sagues, Tom H. Johansen, Thomas Fischer
Colloidal Transport On Magnetic Garnet Filmsw, Tierno Pietro, Frances Sagues, Tom H. Johansen, Thomas Fischer
Faculty of Engineering - Papers (Archive)
This article reports several recent discoveries related to the controlled transport of paramagnetic colloidal particles above magnetic garnet films. The garnet films are thin uniaxial ferromagnetic films in which ferromagnetic domains can be organized into symmetric patterns consisting of stripes or bubbles and generate strong local magnetic field gradients. Application of an external homogeneous magnetic field on a larger scale compared to the spatial periodicity of the magnetic pattern in the film modulates the potential generated at its surface and induces the controlled motion of colloidal particles placed above the film. Several novel dynamical regimes are observed and reported, from …
Serially Concatenated Turbo Codes, S. Vafi, Tadeusz A. Wysocki, Mehran Abolhasan
Serially Concatenated Turbo Codes, S. Vafi, Tadeusz A. Wysocki, Mehran Abolhasan
Faculty of Engineering - Papers (Archive)
The paper presents a new scheme of concatenated codes, referred to as serially concatenated turbo (SCT) codes. The code is constructed as the serial combinations of two turbo codes, i.e. turbo recursive systematic convolutional (RSC) codes and turbo Bose Ray Chaudhuri Hocquenghem (BCH) codes, linked by a pseudo-random interleaver. In comparison with the conventional turbo RSC codes, SCT codes have higher minimum distance values. Based on conducted simulations, it is found that SCT codes outperform turbo RSC codes at the waterfall and error floor regions, while they require reasonable number of iterations at their iterative decoding structure to achieve good …
Feature-Based Optimal Sensor Distribution For Six-Sigma Variation Diagnosis In Multi-Station Assembly Processes, Nagesh Shukla, Darek Ceglarek, Manoj Tiwari
Feature-Based Optimal Sensor Distribution For Six-Sigma Variation Diagnosis In Multi-Station Assembly Processes, Nagesh Shukla, Darek Ceglarek, Manoj Tiwari
Faculty of Engineering - Papers (Archive)
This paper presents a novel feature-based sensor distribution approach for root cause analysis and diagnosis of product 6-sigma variation faults in multi-station assembly processes. Traditional approaches in sensor distribution are based on the assumption that measurement points can be selected at arbitrary locations on the part or subassembly. This causes challenges such as difficult calibration of measurement system, increased errors of measured features, and lack of explicit relations between measured features and geometric dimensioning and tolerancing (GD&T). In the proposed approach, we develop methodology to maximize the number of measurement points that are placed at critical design features called Key …