Global Standards

Definition(s)

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Efficiency

1. ratio of the friction for a fluid moving through an ideal pipe to the friction for a fluid moving through an actual pipe
2. measure of how well a pump or compressor converts shaft horsepower into pressure and flow. More specifically, efficiency is the ratio of the hydraulic horsepower delivered at the discharge to the actual horsepower supplied to the shaft.

Source: IADC UBO / MPD Glossary, December 2011. Global Standards  

Efficiency

Resources expended in relation to the accuracy and completeness with which users achieve goals. Source: IMO MSC.1/Circ.1512, Guideline on Software Quality Assurance and Human-Centred Design for e-navigation, 8 June 2015, International Maritime Organization. Regulatory Guidance

Definition(s)

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Effectiveness

Measured in terms of line or vessel balance. With stable flow rate, volume in equals volume out, and an even pack exists throughout. Source: IADC UBO / MPD Glossary, December 2011. Global Standards  

Effectiveness

Measure of accuracy and completeness with which users achieve specified goals. Source: IMO MSC.1/Circ.1512, Guideline on Software Quality Assurance and Human-Centred Design for e-navigation, 8 June 2015, International Maritime Organization. Regulatory Guidance  

Effectiveness

Extent to which planned activities are realized and planned results achieved. Source: ISO/IEC 27000:2014, Information technology — Security techniques — Information security management systems — Overview and vocabulary, Third Edition, January 2014. Global Standards