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  • Emerald  (4)
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  • Emerald  (4)
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  • 1
    Online-Ressource
    Online-Ressource
    Temperature rise of magnetorheological fluid sealing film in a spiral grooved mechanical
    Emerald ; 2022
    In:  Industrial Lubrication and Tribology Vol. 74, No. 6 ( 2022-06-23), p. 683-691
    Details
    In: Industrial Lubrication and Tribology, Emerald, Vol. 74, No. 6 ( 2022-06-23), p. 683-691
    Kurzfassung: In the magnetorheological fluid (MRF) sealing, a large amount of friction heat is generated in the fluid film with micron thickness due to the viscosity dissipation, which leads to seal failure and MRF deterioration. The purpose of this study is to investigate the mechanism of temperature rise of MRF film under the action of the three-field coupling of the flow field, temperature field and magnetic field. Design/methodology/approach The fluid film was simplified as a Couette flow in this work to simulate the temperature change in the sealing fluid film under different working conditions. The corresponding experiment for test the temperature rise was also carried out, and the temperature of the characteristic point of the stationary ring was measured to validate the model. Findings The results show that the temperature rise is mainly affected by the rotational speed, magnetic field strength and fluid film thickness. The magnetic field enhances the convective heat transfer in the MRF film. The thinner the fluid film, the more frictional heat generated. The MRF film reaches its maximum temperature at the contact with the end face of rotating ring due to frictional heat. Originality/value A method for temperature rise analysis of MRF fluid sealing films based on Couette flow is established. It is helpful for the study of liquid film frictional heat in MRF seals.
    Materialart: Online-Ressource
    ISSN: 0036-8792 , 0036-8792
    URL: Article
    DOI: 10.1108/ILT-01-2022-0030
    Sprache: Englisch
    Verlag: Emerald
    Publikationsdatum: 2022
    ZDB Id: 2025330-8
    Standort Signatur Einschränkungen Verfügbarkeit
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    Online-Ressource
  • 2
    Online-Ressource
    Online-Ressource
    Effect of workplace ostracism on employee initiative behaviour: a chained double mediation model
    Emerald ; 2022
    In:  Journal of Managerial Psychology Vol. 37, No. 8 ( 2022-10-11), p. 765-778
    Details
    In: Journal of Managerial Psychology, Emerald, Vol. 37, No. 8 ( 2022-10-11), p. 765-778
    Kurzfassung: This study aims to test a holistic model that investigates the direct influence of workplace ostracism on employee initiative behaviour, along with the mediating role of organisational identity and work well-being. Design/methodology/approach A series of questionnaire surveys were conducted to collect data in three time lags and multiple sources; 261 supervisor–subordinate matched samples were finally obtained. The hypothesized relationships were tested using structural equation modelling and the ProClin program. Findings The results suggest that workplace ostracism is negatively related to employee initiative behaviour, and organisational identity and work well-being play mediating roles. The analysis further confirms that organisational identity and work well-being play a chained double mediating role between workplace ostracism and employee initiative behaviour. Originality/value This study demonstrates the influence of negative work situation on employee initiative behaviour, specifically the role of workplace ostracism, and expands the theoretical foundation of the relationship. It further provides inspiration and serves as a reference for local Chinese management practices.
    Materialart: Online-Ressource
    ISSN: 0268-3946
    URL: Article
    DOI: 10.1108/JMP-10-2021-0541
    Sprache: Englisch
    Verlag: Emerald
    Publikationsdatum: 2022
    ZDB Id: 2020283-0
    SSG: 3,2
    SSG: 5,2
    Standort Signatur Einschränkungen Verfügbarkeit
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    Online-Ressource
  • 3
    Online-Ressource
    Online-Ressource
    Formal and informal CPAs on business strategy and performance
    Emerald ; 2013
    In:  Journal of Enterprising Communities: People and Places in the Global Economy Vol. 7, No. 3 ( 2013-08-09), p. 245-273
    Details
    In: Journal of Enterprising Communities: People and Places in the Global Economy, Emerald, Vol. 7, No. 3 ( 2013-08-09), p. 245-273
    Kurzfassung: The purpose of this paper is to examine corporate political activities (CPA) by migrant entrepreneurs to improve business performance in a host developing country. Design/methodology/approach The authors use a cross‐sectional analysis of 97 Chinese migrant entrepreneurs with business operations in a host developing economy. Findings A significant positive relationship was found between formal CPAs and performance. Research limitations/implications To further deepen the examination of CPAs, new quantification methodologies have to be applied to properly measure CPA relational strength, investment intensity and diversity. Practical implications The results enable migrant entrepreneurs to make a more educated decision on the type of CPAs to pursue and to what intensity. Social implications The results could motivate migrant entrepreneurs to adapt rapidly to the host country's formal customs to facilitate socio‐economic adaptation. Originality/value This study contributes to literature by examining both formal and informal CPAs, their inter‐relationship and their effects on migrant businesses, which have not been examined previously.
    Materialart: Online-Ressource
    ISSN: 1750-6204
    URL: Article
    DOI: 10.1108/JEC-12-2011-0037
    Sprache: Englisch
    Verlag: Emerald
    Publikationsdatum: 2013
    ZDB Id: 2279480-3
    SSG: 3,2
    Standort Signatur Einschränkungen Verfügbarkeit
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    Online-Ressource
  • 4
    Online-Ressource
    Online-Ressource
    The impact of managerial political connections and quality on government subsidies : Evidence from Chinese listed firms
    Emerald ; 2011
    In:  Chinese Management Studies Vol. 5, No. 2 ( 2011-06-14), p. 207-226
    Details
    In: Chinese Management Studies, Emerald, Vol. 5, No. 2 ( 2011-06-14), p. 207-226
    Kurzfassung: The purpose of this paper is to adopt a contingency perspective and examine the impact of managerial political connections on access to a specific external resource – government subsidies – in China. Design/methodology/approach This study proposes that managerial political connections help firms gain access to government subsidies; in addition, firms must signal their managerial quality through managerial reputation and/or past firm performance to address government officials' concerns with job safety and future career development. These cues, in turn, ensure and increase confidence on government officials' resource allocation decisions in favor of the firm. The authors test the contingency hypothesis by using archival data collected from 212 Chinese firms that went public between 2002 and 2004. Findings This study finds that managerial political connections play a significant positive impact on obtaining government subsidies only when managerial reputation is high, and/or when firm past performance is superior vis‐à‐vis others. Originality/value This study contributes to the existing literature in two ways. First, it enlarges the research scope of political connections by examining their impact on government subsidies instead of financial performance. Second, and more importantly, it posits that the role of political connections is contingent on other moderating factors such as managerial reputation and past firm performance.
    Materialart: Online-Ressource
    ISSN: 1750-614X
    URL: Article
    DOI: 10.1108/17506141111142834
    Sprache: Englisch
    Verlag: Emerald
    Publikationsdatum: 2011
    ZDB Id: 2280185-6
    SSG: 3,2
    Standort Signatur Einschränkungen Verfügbarkeit
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    Online-Ressource
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