Ana Suzete Dias Semedo, Arnaldo Fernandes Matos Coelho and Neuza Manuel Pereira Ribeiro
The purpose of this paper is to report the findings of a study examining the relationship between authentic leadership (AL), attitudes and employees’ behaviours. More…
Abstract
Purpose
The purpose of this paper is to report the findings of a study examining the relationship between authentic leadership (AL), attitudes and employees’ behaviours. More specifically, how AL influences affective commitment, job resourcefulness and creativity, which, in turn, influence individual performance.
Design/methodology/approach
Empirical research has analysed the data from a questionnaire administered to a sample of 543 employees belonging to various public and private organisations in Cape Verde. The model was tested using structural equation modelling.
Findings
The results reveal that AL influences employees’ attitudes (affective commitment and job resourcefulness) and their creativity, affective commitment and job resourcefulness predict the employees’ creativity, and job resourcefulness and creativity predict individual performance.
Practical implications
The results from this study can help managers to understand how to increase employees’ creativity and performance through AL, affective commitment and job resourcefulness. Indirectly, the study also suggests that organisations should focus on selecting leaders with authentic features and implement appropriate training activities, coaching and development that aim to increase AL since this may well result in a positive impact on employees’ attitudes and behaviours.
Originality/value
The originality of this study is that it focusses on the integration of the five concepts, AL, affective commitment, job resourcefulness, creativity and individual performance, in a single study, providing a model that depicts the chain of effects between AL, employees’ attitudes, employees’ creativity and individual performance.
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Stênio de Sousa Venâncio, Swami Marcondes Villela, José Luís da Silva Pinho and José Manuel Pereira Vieira
The purpose of this paper is to construct a numerical model for the numerical analysis of the hydraulic transient profile in Trabalhador channel for filling and emptying maneuvers…
Abstract
Purpose
The purpose of this paper is to construct a numerical model for the numerical analysis of the hydraulic transient profile in Trabalhador channel for filling and emptying maneuvers and to determine the water level in time. Model results support operational managers in the decision-making process.
Design/methodology/approach
Physical data were provided for the construction and calibration of the numerical model. The equations of Saint-Venant were approximated by a finite difference scheme and the numerical model was written in Fortran. The results of filling and emptying of the channel simulations were compared with the measured water levels.
Findings
Measured water levels and those simulated by the numerical model have shown good correlation. The time recorded for the filling and emptying of the canal was also close between the measured and simulated data. The simulation design flow pointed to inundation in the channel banks. Simulation water levels were slightly higher than those measured.
Research limitations/implications
In this model, the combination of canals and pressure conduits was not considered.
Practical implications
The findings confirm the measured time for filling and emptying of the canal, as well as inundation of canal banks for the maximum design flow. These results help in the management process.
Originality/value
This paper presents a numerical model for hydraulic transient analysis in channels with good agreement with the field data.
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Christian Julmi, José Manuel Pereira, Jack K. Bramlage and Benedict Jackenkroll
Although the literature shows that ethical leadership reduces the risk of burnout, research still lacks a comprehensive understanding of the mediating effects between ethical…
Abstract
Purpose
Although the literature shows that ethical leadership reduces the risk of burnout, research still lacks a comprehensive understanding of the mediating effects between ethical leadership and burnout. As media reports on working conditions in the academic context often tie the problem of unethical leadership practices to illegitimate tasks, this study focuses on illegitimate tasks as a mediator between ethical leadership and burnout.
Design/methodology/approach
The research model is tested using structural equation modeling and data from 1,053 doctoral and postdoctoral students in randomly selected German state universities.
Findings
The results significantly support all hypothesized effects, showing direct correlations between (1) ethical leadership and illegitimate tasks, (2) ethical leadership and burnout facets and (3) illegitimate tasks and burnout facets. The relationship between ethical leadership and burnout is thus partially mediated by illegitimate tasks.
Practical implications
The authors recommend three major fields of action for practice. These fields comprise (1) the leadership situation, (2) the leader and (3) the follower.
Originality/value
The presented model is the first that connects the relationship between ethical leadership and burnout with illegitimate tasks and looks at ethical leadership from a stress-as-offense-to-self (SOS) perspective.
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Ana Suzete Dias Semedo, Arnaldo Fernandes Matos Coelho and Neuza Manuel Pereira Ribeiro
Authentic leadership (AL) as a style can influence, directly or indirectly, employees’ attitudes and behaviors. In this perspective, the purpose of this study is to investigate…
Abstract
Purpose
Authentic leadership (AL) as a style can influence, directly or indirectly, employees’ attitudes and behaviors. In this perspective, the purpose of this study is to investigate how AL predicts affective well-being (AWB) and employees’ creativity. The mediating role of AWB and the moderating role of satisfaction with management will be analyzed.
Design/methodology/approach
The researchers have analyzed the data from a questionnaire administered to a sample of 543 employees belonging to various public and private organizations in Cape Verde. Structural equation modelling was used to test the proposed hypotheses and a multi-group analysis was performed to identify how the level of satisfaction with the management may impact the proposed relationships.
Findings
The results of this study reveal that perceptions of AL predict employees’ creativity both directly and through the mediating role of AWB. Satisfaction with the management seems to moderate the relationship between AL, AWB and creativity.
Practical implications
The research outcomes suggest that organizations should focus on training leaders who value self-awareness and transparency in their relationships with others, who display an internal moral perspective and demonstrate balanced processing of information, to guarantee good results at the individual level and, consequently, at the organizational level. This study provides practitioners with possible routes to act in favor of a much happier and more creative workforce.
Originality/value
The originality of this study is because of the integration of these four concepts in a single study, providing evidence of the relationship between AL and creativity through the mediating role of AWB and moderating role of satisfaction with the management.
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Pedro Areias, Jebun Naher Sikta and Manuel Pereira dos Santos
The purpose of this paper is to provide an analysis of dust acoustic (solitary) waves including viscosity. Specifically, the authors consider a dusty unmagnetized plasma system…
Abstract
Purpose
The purpose of this paper is to provide an analysis of dust acoustic (solitary) waves including viscosity. Specifically, the authors consider a dusty unmagnetized plasma system consisting of negatively charged dust and Boltzmann electrons and ions.
Design/methodology/approach
In this paper, a Petrov–Galerkin weak form with upwinding is adopted. Nonlinearity of ion and electron number density in terms of an electrostatic potential is included. A fully implicit time integration is used (backward Euler method), which requires the first derivative of the weak form. A three-field formulation is proposed, with the dust number density, the electrostatic potential and the dust velocity being the unknown fields.
Findings
In this study, two numerical examples are introduced and results show great promise for the proposed formulation as a predictive tool in viscous dusty plasmas. Presence of solitary waves was demonstrated. Dusty plasma vortices are predicted in 2D and 3D, as mentioned in the specialized literature.
Research limitations/implications
We observed some dependence on step size, which is due to the simple time-stepping scheme. This can be solved with a higher order integration scheme, which implies an added cost to the solution.
Practical implications
Dusty plasmas are found in astrophysics (Saturn rings) and electronics industry at several scales and have high impact as a contaminant.
Originality/value
To the authors’ knowledge, this is the first paper with a simulation of dusty plasma including vortices.
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Caroline Kalil Reimann, Fernando Manuel Pereira de Oliveira Carvalho and Marcelo Pereira Duarte
It is well established in marketing literature that international performance is positively affected by marketing capabilities, whether static or dynamic. However, recent…
Abstract
Purpose
It is well established in marketing literature that international performance is positively affected by marketing capabilities, whether static or dynamic. However, recent theoretical development proposed adaptive marketing capabilities (AMC) as a set of capabilities able to close the marketing gap. Given the relative newness of this construct, empirical studies are still scarce. Therefore, drawing from a resource-based view perspective, this study aims to analyse the relationships among market orientation (MO), AMC and firms’ international performance, as well as the moderating effects of competitive intensity.
Design/methodology/approach
The authors have used survey-based research with 335 internationalised Portuguese business-to-business small and medium sized enterprises (B2B SMEs) during June 2020. The authors analysed responses through structural equation modelling and path analysis.
Findings
Results revealed positive relationships between AMC and international performance and between MO and AMC. Furthermore, results were robust to the competitive environment.
Originality/value
To the best of the authors’ knowledge, this study contributes to international marketing literature by analysing MO as an antecedent of AMC, which has never been done before. Furthermore, it analyses the simultaneous effects of MO and AMC on international performance, as well as the moderation of competitive intensity. Also, the study’s results inform managers and marketeers of internationalised firms about the advantages of adopting a market-oriented behaviour and the development of AMC, whether in more or less competitive environments.
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André de Abreu Saraiva Monteiro Alves and Fernando Manuel Pereira de Oliveira Carvalho
While organizational dynamic capabilities (DCs) are understood as crucial to small- and medium-sized enterprises (SMEs)’ success, the configurations of individual-level…
Abstract
Purpose
While organizational dynamic capabilities (DCs) are understood as crucial to small- and medium-sized enterprises (SMEs)’ success, the configurations of individual-level capabilities and meta-capabilities, in the form of dynamic managerial capabilities (DMCs) and organizational change capacity (OCC), in which that outcome can be observed are not clear. We answer this research question while considering the firm’s internationalization as a moderator.
Design/methodology/approach
We conduct a two-stage fsQCA analysis, with data obtained through a questionnaire.
Findings
Our results indicate two equifinal main paths. Managerial cognition of DMCs and the change processes capacity of OCC are incredibly relevant conditions for determining the outcome of DCs in SMEs, with a peripheral role of the remaining OCC dimensions. Internationalization moderates this relationship. In internationalized firms, as the second path, organizational learning, the capability to change contexts and human capital gain prominence.
Research limitations/implications
We offer important insights into the contingencies of the development of DCs in SMEs, highlighting the importance of configurational thinking. More than one or other related dimension, the conjunction of DMCs’ and OCC’s dimensions determines the presence of DCs. Furthermore, we highlight the importance of considering the internationalization of the firm.
Originality/value
No study has approached DMCs and OCC as capability antecedents of DCs in SMEs, disentangling interrelated antecedents and thus determining the sufficient conditions for their formation. The consideration of the moderation of internationalization further expands the contextual relevancy of these antecedents. Methodologically, we are one of the first studies to utilize newly improved procedures to study moderation in a configurational analysis.
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Carlos Manuel Inácio da Silva, Carlos Manuel Pereira Cabrita and João Carlos de Oliveira Matias
The purpose of this paper is to emphasize that the choice of the most appropriate maintenance model and policies is the best way to reduce significantly the maintenance costs as…
Abstract
Purpose
The purpose of this paper is to emphasize that the choice of the most appropriate maintenance model and policies is the best way to reduce significantly the maintenance costs as well as to optimize the useful Key Performance Indicators – failure rates, reliability, mean time between failures, mean time to repair, and equipment availabilities.
Design/methodology/approach
In order to implement the Asset Effectiveness Optimization AEO as well as the Overall Equipment Effectiveness OEE, improving productivity in a complex food‐products plant, the paper presents a theoretical and experimental study related to the maintenance costs directly associated with the equipment used in production tasks.
Findings
The developed tool is an efficient method of calculating the maintenance costs and allows one by means of computational simulation to define the most advisable maintenance policy. On the other hand, the proposed relationships are universal and could be used as an economic evaluation indicator for other industries and equipment.
Research limitations/implications
Further research should include the application of the proposed methodology to the similar equipment of other food‐products plants as well as to other different equipment in order to create benchmarking procedures. This generator of technical information is the most appropriate method of optimizing maintenance key performance indicators.
Practical implications
As is well known, equipment availability must be as close to 100 per cent as possible, in order to avoid non‐planned breakdowns with the consequent production losses. Then it is important to adopt the most advisable maintenance policies and practices, the proposed methodology being an efficient tool for evaluating the maintenance performance and, in addition, for optimizing procedures.
Originality/value
The proposed methodology represents an efficient way to evaluate the maintenance performance as well as to choose better maintenance policies and practices in order to reduce costs and increase maintenance key performance indicators.
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The large signal modulation response of a 1.3 μm InGaAsP 4‐well laser of the Fabry–Perot type is investigated. The current density is assumed to take the form J = JO+JM sin(ωt…
Abstract
The large signal modulation response of a 1.3 μm InGaAsP 4‐well laser of the Fabry–Perot type is investigated. The current density is assumed to take the form J = JO+JM sin(ωt) where JO is the steady state current density above threshold and JM is allowed to take values such that the modulation depth, m, may not satisfy the condition m<< 1. The time evolution of the photon density shows that the output power may be sinusoidal when m<< 1, i.e. small signal modulation, low and very high frequencies. At intermediate frequencies, in the gigahertz range, the output power is far from sinusoidal and may show the characteristic oscillations due to the large‐signal transients. The resonance frequency is seen to decrease as the modulation depth increases, the worst case being when the nonlinear saturation effects are not included.