This study deals with the optimisation of hybrid composite drive shafts operating at subcritical or supercritical speeds, using a genetic algorithm. A formulation for the flexural vibrations of a composite drive shaft mounted on viscoelastic supports including shear effects is developed. In particular, an analytic stability criterion is developed to ensure the integrity of the system in the sup...

The phase retrieval problem, fundamental in applied physics and engineering, asks to determine the phase of a complex-valued function from modulus data and additional a priori information. Recently, we identified two important methods for phase retrieval, namely Fienup’s Basic Input-Output (BIO) and Hybrid Input-Output (HIO) algorithms, with classical convex projection methods and suggested tha...

In previous work about hybrid speech recognizers with discrete HMMs we have shown that VQs, that are trained according to an MMI criterion, are well suited for ML estimated Bayes classifiers. This is only valid for single VQ systems. In this paper we extend the theory to speech recognizers with multiple VQs. This leads to a joint training criterion for arbitrary multiple neural VQs that conside...

In this paper, an evolutionary-based multi-objective criterion is introduced for simplified symbolic smallsignal analysis of analog circuits containing MOSFETs. After circuit analysis via modified nodal analysis technique, the derived exact symbolic transfer function of the circuit behavior is automatically simplified. In contrast to traditional simplification criteria, the main objective of ou...

Diabetic Retinopathy (DR) is the third biggest cause of blindness in India. Hard exudates are the primary signs of DR. In this paper the authors propose a novel hybrid mechanism for the detection of Exudates based DBSCAN clustering algorithm. Unlike other clustering algorithms, DBSCAN clustering does not require the number of clusters to be specified. Classification of regions is being done usi...

Assessing the lethality of Kinetic Energy Non-lethal Weapons (KENLW) is very complicated because of the wide variety of projectiles currently in use, as well as the complexity that characterises the interaction between the projectile and the human body. This article describes and applies injury criteria found in the literature to perform a lethality assessment of a 40mm Nobel Sport sponge grena...

In this paper, a new approach for MC-DCT (motion compensated – Discrete Cosine Transform) hybrid video coding based on true motion estimation is proposed. The true motion estimation technique employs the leastmedian-squares (LMedS) matching criterion in block matching process for motion estimation. The rationale for using such true motion estimator is that at low bit-rates, very few bits are av...

Process planning is an important function in a manufacturing system; it specifies the manufacturing requirements and details for the shop floor to convert a part from raw material to the finished form. However, considering only economical criterion with technological constraints is not enough in sustainable manufacturing practice; formerly, criteria about low carbon emission awareness have seld...

This paper proposes a new approach for a hybrid connectionistHMM speech recognition system. The system consists of a multi-feature HMM-based recognition module using three different neural networks as multiple neural codebooks. Each neural network receives a different feature (i.e. cepstrum, delta cepstrum, and delta power) as input and generates a vector quantizer label obtained from the firin...

Both parallel Magnetic Resonance Imaging (pMRI) and Compressed Sensing (CS) are emerging techniques to accelerate conventional MRI by reducing the number of acquired data in the k-space. So far, first attempts to combine sensitivity encoding (SENSE) imaging in pMRI with CS have been proposed in the context of Cartesian trajectories. Here, we extend these approaches to non-Cartesian trajectories...