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The purpose of this paper is to show the limitation of current physical components (CPC) concept in a practical application.
Abstract
Purpose
The purpose of this paper is to show the limitation of current physical components (CPC) concept in a practical application.
Design/methodology/approach
The study proposes using the sum of active and scattered currents in the compensation procedure of the reactive current according to Czarnecki's concept as well as in scattered current elimination, to get the optimal energy transfer from the source supply to the load.
Findings
The results show that CPC concept can be apply only when supply circuit voltage does not consist of interharmonics or/and subharmonics. It can also be shown that elimination of particular harmonics of the scatter current cannot be applied in practice due to the change of active power in the circuit. Only complete elimination of scatter current, e.g. by an active filter is possible without any change of active power.
Practical implications
The paper provides new information about CPC practical implementation.
Originality/value
This paper presents new features of CPC concept.
Details
Keywords
Kamil Krasuski, Janusz Cwiklak and Marek Grzegorzewski
This paper aims to present the problem of the integration of the global positioning system (GPS)/global navigation satellite system (GLONASS) data for the processing of aircraft…
Abstract
Purpose
This paper aims to present the problem of the integration of the global positioning system (GPS)/global navigation satellite system (GLONASS) data for the processing of aircraft position determination.
Design/methodology/approach
The aircraft coordinates were obtained based on GPS and GLONASS code observations for the single point positioning (SPP) method. The numerical computations were executed in the aircraft positioning software (APS) package. The mathematical scheme of equation observation of the SPP method was solved using least square estimation in stochastic processing. In the research experiment, the raw global navigation satellite system data from the Topcon HiperPro onboard receiver were applied.
Findings
In the paper, the mean errors of an aircraft position from APS were under 3 m. In addition, the accuracy of aircraft positioning was better than 6 m. The integrity term for horizontal protection level and vertical protection level parameters in the flight test was below 16 m.
Research limitations/implications
The paper presents only the application of GPS/GLONASS observations in aviation, without satellite data from other navigation systems.
Practical implications
The presented research method can be used in an aircraft based augmentation system in Polish aviation.
Social implications
The paper is addressed to persons who work in aviation and air transport.
Originality/value
The paper presents the SPP method as a satellite technique for the recovery of an aircraft position in an aviation test.
Details
Keywords
The aim of this paper is to introduce the topic of poster presentation as legitimate area of academic study and practice within the marketing discipline.
Abstract
Purpose
The aim of this paper is to introduce the topic of poster presentation as legitimate area of academic study and practice within the marketing discipline.
Design/methodology/approach
The paper presents the output of one part of a research project that reviewed the state of knowledge and practice within poster presentation as a dissemination medium for research information. The results of the literature search are presented as an annotated bibliography.
Findings
The literature search reveals a sizeable body of material on the use of poster presentation as a dissemination media, indicative of a set of key themes that guide good practice in poster design, construction and presentation. It also includes material that has studied the use of poster design and presentation exercises as pedagogical devices.
Research limitations/implications
The research on which the paper is based is limited by virtue of not offering a more complete survey of contemporary poster presentation practice across the sciences. It draws observations from the author's attendance at several marketing and management‐related conferences where poster presenters have been interviewed and examples of poster presentation have been collected. However, in the sciences, especially the medical sciences, poster practice is well‐established and in some cases moving towards digitisation.
Practical implications
The aesthetics of poster design remain unclear in the case of poster design for the dissemination of scientific information. However, a set of templates has been produced based on the close study of a database of over 600 poster designs and ten years' experience of using posters as teaching tools for research training. A methodology for poster design has also been developed known as “The Block Architecture Method of Poster Design”. It uses the software Powerpoint and Photoshop to develop poster design electronically.
Originality/value
The bibliography will help interested teachers and students explore the various issues surrounding poster design, construction and presentation. It will also help to understand some of the advantages of using poster‐design exercises as creative and critical devices in a pedagogical context.
Details
Keywords
Sigalit Ronen and Ayala Malach Pines
The purpose of this paper is to investigate gender differences in burnout, style of coping and the availability of peer support among high‐tech engineers
Abstract
Purpose
The purpose of this paper is to investigate gender differences in burnout, style of coping and the availability of peer support among high‐tech engineers
Design/methodology/approach
A longitudinal study investigated gender differences in burnout, style of coping and the availability of peer support among high‐tech engineers, an interesting occupational group from a gender perspective both because of the masculine culture of the engineering profession and the many prejudices against women engineers. Both the masculine culture and the prejudices help explain the paucity of women engineers and predict high levels of burnout among them.
Findings
The paper's findings supported this prediction. They revealed a significant gender difference in burnout, with women engineers reporting higher levels of burnout than men. The gender differences in burnout were interpreted as related to other findings: women's greater tendency to utilize emotion‐focused coping, their smaller peer support and greater work–family conflict.
Originality/value
In addition to their implications for gender theory and research and for burnout theory and research, the paper's findings point to the need to encourage and support the small and unique group of women engineers.
Details
Keywords
Shazia Nauman, Usman Raja, Inam Ul Haq and Waqas Bilal
The extant research on emotional labor (EL) has focused on positive and negative outcomes observed in the workplace; however, many fundamental questions remain unanswered. The…
Abstract
Purpose
The extant research on emotional labor (EL) has focused on positive and negative outcomes observed in the workplace; however, many fundamental questions remain unanswered. The research has yet to consider what factors buffer the negative outcomes of EL. The purpose of this paper is to investigate the relationship between workload job demand and employee well-being with mediating effects of surface acting (SA) and moderating effects of emotional intelligence (EI) in service organizations.
Design/methodology/approach
The authors used two wave data from a sample of 207 emergency medical technicians to test the hypotheses.
Findings
By integrating SA, EI and employee well-being with the conservation of resource theory, the authors found evidence of an indirect effect of workload job demand on emotional exhaustion and job satisfaction via SA. The results of moderated mediation show that the negative relationship between SA and job satisfaction was low when EI was high and the positive relationship between SA and emotional exhaustion was low when EI was high.
Research limitations/implications
A major limitation of the present study is that all the participants were male and drawn from a single profession within the same organization. Another limitation is that the data were collected through self-reports.
Practical implications
This research has important theoretical and practical implications for service organizations wishing to buffer the harmful effects of SA on employees. This study presents key theoretical implications for the EL and well-being literatures. An important practical implication is that EI is a good resource for managing SA’s negative outcomes.
Originality/value
The current study contributes to the extant research by showing that workload job demands have negative effects on employee well-being via SA resulting in reduced job satisfaction and increased emotional exhaustion. Further, the negative outcomes of SA on employee well-being can be buffered through EI by taking EI as an emotional resource. High level of EI helps employees to mitigate the harmful effects of SA.
Details
Keywords
The purpose of this study is to analyze the relationship between stress and burnout in high-risk occupations and how leadership moderates this relationship. Thus, the primary…
Abstract
Purpose
The purpose of this study is to analyze the relationship between stress and burnout in high-risk occupations and how leadership moderates this relationship. Thus, the primary research question addressed within this study is: What is the relationship between stress and burnout in high-risk occupations as governed by transformational leadership behavior?
Design/methodology/approach
An analysis of primary data obtained by survey from 379 police officers from nine southern and southwestern agencies was conducted. Hierarchical regression analysis, multiple moderated hierarchical regression analysis, bivariate correlation analyses and other statistical methods are used.
Findings
Results indicate police stress exacerbates perceived burnout. Transformational leadership influences this relationship such that high levels of perceived transformational leadership attenuates the negative relationship between stress and burnout, but less so under highly stressful conditions. Findings have strong implications for leaders in high-risk occupations where bureaucracy, departmental policy, and life and death decision-making intersect.
Research limitations/implications
This study can be used as a basis for further inquiry into the effects of transformational leadership on individuals' perceptions of performance, behavioral and psychological criterion variables in high-risk occupations.
Practical implications
The assessment of relationships among stress and burnout in high-risk occupational settings potentially allows managers to better understand how to structure supervisor-subordinate relationships in order to minimize the effects of stress on perceived burnout and provides a more realistic view of how individuals in high-risk occupations are influenced by leader behaviors under stressful conditions.
Originality/value
This study is thought to be the only one to evaluate the moderated relationships among stress, transformational leadership and burnout in high-risk occupations characterized by increasingly stressful circumstances. More specifically, the notion that individuals in high-risk occupations perceive burnout differently than those in less-risky occupations is not prevalent in the literature.
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