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1 – 6 of 6Rosario Miceli, Yasser Gritli, Antonino Di Tommaso, Fiorenzo Filippetti and Claudio Rossi
The purpose of this paper is to present a diagnosis technique, for rotor broken bar in double cage induction motor, based on advanced use of wavelet transform analysis. The…
Abstract
Purpose
The purpose of this paper is to present a diagnosis technique, for rotor broken bar in double cage induction motor, based on advanced use of wavelet transform analysis. The proposed technique is experimentally validated.
Design/methodology/approach
The proposed approach is based on a combined use of frequency sliding and wavelet transform analysis, to isolate the contribution of the rotor fault components issued from vibration signals in a single frequency band.
Findings
The proposed technique is reliable for tracking the rotor fault components over time-frequency domain. The quantitative analysis results based on this technique are the proof of its robustness.
Research limitations/implications
The validity of the proposed diagnosis approach is not limited to the analysis under steady-state operating conditions, but also for time-varying conditions where rotor fault components are spread in a wide frequency range.
Practical implications
The developed approach is best suited for automotive or high power traction systems, in which safe-operating and availability are mandatory.
Originality/value
The paper presents a diagnosis technique for rotor broken bar in double cage induction motor base on advanced use of wavelet transform which allows the extraction of the most relevant rotor fault component issued from axial vibration signal and clamping it in a single frequency bandwidth, avoiding confusions with other components and false interpretations.
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Raphael Snir and Itzhak Harpaz
The purpose of this paper is to examine the workaholism phenomenon.
Abstract
Purpose
The purpose of this paper is to examine the workaholism phenomenon.
Design/methodology/approach
Workaholism was defined as the individual's steady and considerable allocation of time to work, which is not derived from external necessities. Subsequently, it was measured as time invested in paid work, controlling for the financial needs for such an investment. Workaholism is examined from a cross‐national perspective through representative samples of the labor force in Belgium, Israel, Japan, The Netherlands, and the USA
Findings
The Japanese worked more hours per week than all other nationalities. The following findings have remained stable across nations: respondents with a high level of work centrality worked more hours per week than did those with a low level of work centrality. Men worked more hours per week than women. Married women worked fewer hours per week than unmarried women, while married men worked more hours per week than unmarried men. Private‐sector employees worked more hours per week than public‐sector employees.
Research limitations/implications
The cross‐national comparisons are based on aggregated self‐reported data obtained from individuals. However, the present study makes three major contributions: applying a non‐biased definition of workaholism, indicating that the existing conceptualizations of workaholism as an attitude have underestimated the importance of sex‐roles in shaping work patterns and behaviors, and findings of similarities as well as of differences across nations on the phenomenon of workaholism.
Practical implications
Developing awareness of cultural variations concerning workaholism.
Originality/value
This is perhaps the only empirical study so far making a cross‐national comparison of workaholism, which also has high external validity.
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Ritu Tayal, Mamta Tripathi, Nishant Singh and Umesh Bamel
The objective of this paper is to employ a model to expand the literature's comprehension of the organisational citizenship behaviour (OCB) phenomenon in the Indian banking…
Abstract
Purpose
The objective of this paper is to employ a model to expand the literature's comprehension of the organisational citizenship behaviour (OCB) phenomenon in the Indian banking sector. The authors examine OCB as a mediator of the relationship between job embeddedness (JE), self-efficacy (SE) and organisation effectiveness (OE). The authors also verify the moderating role of affective commitment (AC) on the JE, SE and OE relationship.
Design/methodology/approach
Data for the purpose of this paper are collected from 568 employees in 89 branches of banks located in North and Central India using a survey questionnaire. The data collected were analysed using structural equation modelling (SEM).
Findings
The findings confirm the positive association between JE, SE and OE. The results also suggest that OCB mediates the association between the independent and dependent variables. Furthermore, the authors observed that AC moderates the OCB and OE relationship.
Practical implications
The results of this examination will assist the employees to realise the substance of OCB in directing their performance towards OE. This investigation will inspire bank managers to notice that employee readiness to put in extra effort in a bank is primarily the effect of apt individual characteristics, namely JE and SE, that can be shaped and developed. Furthermore, this study draws the attention of bank managers towards the significance of AC, as an essential phenomenon to emotionally attach the employees to their organisation.
Originality/value
This study contributes to the existing literature on OCB by examining how OCB leads to desired outcomes and the conditions that promote the effect of OCB. The authors address these questions by building on a more contemporary perspective, i.e., PsyCap.
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