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A Comparative Ergonomics Postural Assessment of Potters and Sculptors in the Unorganized Sector in West Bengal, India

Sahu S., Moitra S., Maity S., Pandit A. K., Roy B.

International Journal of Occupational Safety and Ergonomics

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2013

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Vol. 19, No. 3

455--462

EN

Potters and sculptors perform their work in very awkward postures. The purpose of this study was to analyse these postures. The modified Nordic questionnaire was used to analyse musculoskeletal discomfort. Rapid entire body assessment (REBA) and rapid upper limb assessment (RULA) were used to evaluate the subjects' postures. There were no significant differences between times of discomfort and the group of subjects. However, there were significant differences in discomfort in different body parts. The analysis indicated that various body postures were harmful to the subjects and that there were profound deviations from natural curvature of various body parts due to awkward body postures. Ergonomics intervention was required to improve the quality of life.

2

Unification of almost regular, almost normal and mildly normal topological spaces

Roy B.

Demonstratio Mathematica

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2012

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Vol. 45, nr 4

963-974

EN

In this paper, a new kind of sets called regular ž-generalized closed (briefly ržg-closed) sets are introduced and studied in a topological space. Some of their properties are investigated. Finally, some characterizations of almost ž-regular, almost ž-normal and mildly ž-normal spaces have been given.

3

A missing link in OR-DA : robustness analysis

Roy B.

Foundations of Computing and Decision Sciences

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1998

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Vol. 23, No. 3

141-160

EN

For many years, the goal of decision-aid (DA), as seen within e context of Operational Research (OR), was to find the right solution to problems confronting decision-makers. Today our expectations concerning OR DA are generally more modest: we anticipate that this discipline will provide partial answers to questions asked by one or more actors in the decision-making process. Working within either of these perspectives forces analysts basing their work on algorithms or heuristics to assign numerical values to various parameters in order to obtain results. The true value of in parameters, however; may either be unknown (imprecise measuring instruments, uncertainty concerning the future) or, in some cases, even non-existent. For such parameters, a set of values appropriate to the model used should be taken to consideration. The robust conclusion concept, detailed and illustrated in this article, aims to elaborate partial solutions in such a way as to take account of this aspect of reality. Underestimating, or indeed ignoring, its importance could explain why many results obtained in OR-DA have little or no relevance when applied to practical situations. Developing robust conclusions could supply a missing link for this discipline, thus generating renewed interest in OR-DA amongst its potential users as well as suggesting new research orientations for theoreticians working in this field.