– The purpose of this paper is to suggest new method for improving the condition indicators (CIs) used in health and usage monitoring system based on signal separation of gears.
Abstract
Purpose
The purpose of this paper is to suggest new method for improving the condition indicators (CIs) used in health and usage monitoring system based on signal separation of gears.
Design/methodology/approach
The research method is based on employing signal separation techniques to improve gears signal and fault signature. The signal separation is based on adaptive filters concept.
Findings
CIs estimated for the deterministic part of vibration signal show higher sensitivity to gears faults in comparison to indicators estimated based on the original signal. This method proposed could enhance early fault detection in gears, particularly for those applications where strong background noise from other sources in the machine masks the characteristics fault components.
Originality/value
The contribution of this research is improving the CIs currently used for helicopter gearboxes. As consequence the safe operation and availability will be improved.
Details
Keywords
Africa is a focus area for international climate change adaptation finance. Subsistence farmers are crucial for Africa's adaption. But it is unclear how those that qualify to…
Abstract
Purpose
Africa is a focus area for international climate change adaptation finance. Subsistence farmers are crucial for Africa's adaption. But it is unclear how those that qualify to receive adaptation finance actually perceive climate change, even though perceptions are reflected in adaptive behaviour. This paper aims to show how perceptions of climate‐related hazards drive adaptation and provide recommendations for the climate change finance community to support subsistence farmer adaptation.
Design/methodology/approach
A total of 227 households in rural Ghana and Botswana were surveyed and their answers statistically analysed.
Findings
The respondents' perception of climate‐related hazards is analogous to existing environmental degradation. In the complex environment in which farmers operate, high vulnerability and climate dependency do not necessarily result in autonomous adaptation. Experience, means and perceived successfulness are more important factors, but these hardly relate to individual adaptive measures.
Practical implications
Recommendations for adaptation finance institutions: build on existing development plans and policies on climate‐related environmental problems; adaptation is more than a collection of adaptive measures, so financing adaptation is more than financing adaptive measures; extremely vulnerable people do not necessarily adapt autonomously, indicating that ex post adaptation remains important too.
Originality/value
This study shows that highly vulnerable subsistence farmers do not automatically adapt and that adaptation is more than implementing adaptive measures. The outcomes are linked to the adaptation finance institutions.