Multiple Frame Sizes Research Articles

To what extent does body height affect the use and satisfaction of electrically-assisted bicycles for postal purpose?

To investigate to what extent body height affects the use and satisfaction of electrically-assisted bicycles (EB) among postal workers, 1115 EB users filled in a questionnaire and 28 postal workers were observed during their distribution round. We aimed to provide a framework to estimate the possible effects of providing multiple frame sizes to postal workers. Although the body height of postal workers affected how they reached for mail and delivered it, it hardly affected their satisfaction with the current EB. Accessibility of the front carrier seemed to be the main issue that could be coped with by providing different frames. Ironically, postal workers for whom the front carrier was most accessible (tallest group) reported the highest physical load. The relevance of these results with respect to the availability of multiple frame sizes and other changes to the EB that might be beneficial from an ergonomic point of view is discussed.

Automatic transcription of continuous speech into syllable-like units for Indian languages

The focus of this paper is to automatically segment and label continuous speech signal into syllable-like units for Indian languages. In this approach, the continuous speech signal is first automatically segmented into syllable-like units using group delay based algorithm. Similar syllable segments are then grouped together using an unsupervised and incremental training (UIT) technique. Isolated style HMM models are generated for each of the clusters during training. During testing, the speech signal is segmented into syllable-like units which are then tested against the HMMs obtained during training. This results in a syllable recognition performance of 42·6% and 39·94% for Tamil and Telugu. A new feature extraction technique that uses features extracted from multiple frame sizes and frame rates during both training and testing is explored for the syllable recognition task. This results in a recognition performance of 48·7% and 45·36%, for Tamil and Telugu respectively. The performance of segmentation followed by labelling is superior to that of a flat start syllable recogniser (27·8%and 28·8%for Tamil and Telugu respectively).

Optimal design of ring stiffened cylindrical shells using multiple stiffener sizes

Abstract : This report describes the solution to the singly reinforced discrete stiffener problem by direct use of an optimization scheme employing mathematical programming. The optimization formulation and procedure used here admit a large number of simultaneous buckling modes thus allowing optimization under conditions of mode coalescence, which are usual in this type of problem. This is a preliminary study, the purposes of which are; to develop and evaluate methodology for the treatment of this problem, to develop preliminary insights into how multiple frame sizes may efficiently be employed in submersible structures, to examine the nature of design improvement resulting from use of multiple size frames, and to investigate the nature of such optimal designs. (Author)