Papers by Keyword: Operational Performance

Abstract: This study aims to investigate the multidimensional and individual relationship between manufacturing flexibility and operational performance in manufacturing SMEs. A survey methodology was followed to collect data pertaining to the phenomena of manufacturing flexibility and operational performance in the SMEs using a single respondent design. The results provided evidence that manufacturing flexibility is positively and significantly associated with operational performance; suggesting that more flexible manufacturing system is equivalent to the higher operational performance. In addition, the results highlighted the important role of machine flexibility, product flexibility, volume flexibility, routing flexibility, and labor flexibility in improving the operational performance. Each of them contributed not equally, but positively, to all dimensions of operational performance. The findings aim at contributing towards understanding the manufacturing flexibility dimensions that give rise to operational performance. Keywords: manufacturing flexibility, operational performance; manufacturing SMEs

Abstract: Through analyzing the operational performance of typical cyclones, including pressure drop and flow ratio, few operation features of the cyclones with different design has been deduced. The relationship between design and the operational features has also been analyzed. This paper mostly introduced the variety between the pressure drop and flux and the outlet size impacting on the flow ratio.

Abstract: In determining the correct operation of relays of a protection scheme, proper representation of instrument transformers and their behavior in conditions where there can be saturation, is very critical. The main objective of this paper is to develop simulation model for assessing the operational performance of Current Transformer (CT). In order to test the validity of the developed model, three cases of CT operational conditions were considered, with data collected from Gombe, 330/132/33kV PHCN substation. The simulation results revealed various configuration performance responses that could affect relay protective schemes to different degrees. The CT responses revealed that the secondary current and voltage were distorted when the core flux linkages exceeded the set 9.2 pu saturation limit. It is concluded that the model developed for the CT of interest yield satisfactory results.