Search results

This study aims to investigate the causes of leakage in radial oil seals under dynamic eccentricity, elucidate the influence of operating parameters on leakage failure and develop methods for predicting and preventing such leakage.

Based on the principle of cam motion and considering viscoelasticity, develops a motion model of the compression and release of the shaft seal and proposes a method to determine its failure. In addition, this study quantifies the leakage gap and formulates a quantitative calculation model to accurately determine the location and shape parameters of the leakage gap.

Leakage gaps predominantly occur during the release phase of the shaft seal. Their presence can be identified by comparing the descending times of the seal and the shaft during this phase. An increase in rotation speed and eccentricity heightens the likelihood of gap formation, with both the dimensions and leakage rate of the gap increasing as these factors escalate. Eccentricity, in particular, has a more pronounced effect on gap formation.

This study clarifies the failure mechanisms of radial oil seals under dynamic eccentricity and introduces a criterion for identifying leakage gaps, providing valuable theoretical guidance for the design and optimization of radial oil seals.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0192/.

The purpose of this study is to build a theory on management investigating the relationship between organizational culture and strategic flexibility in firms, and how this relationship is affected through industry 4.0 capabilities and the market orientation of firms.

As a methodological approach, this paper uses a rich combination of literature review and exploratory interviews with managers and academics. Data were collected from 379 industrial managers; confirmatory factor analysis (CFA) and finally structural equation modeling (SEM) were performed to validate the data and examine the hypothesized relationships.

The results show that organizational culture drives firms to strategic flexibility, but the introduction of industry 4.0 capabilities and market orientation fully mediate this relationship, revealing their significance to strategic flexibility.

All the respondents of the study's dataset were from Greek firms; the role of national culture should be considered. Moreover, the comprehension of I4.0 is a quite recent concept that is still being formulated, this feature may modify the results of future studies.

Managers should allocate resources for the concurrent adoption of digital technologies capabilities and suitable market-oriented strategies in order for them to be key drivers for enhanced strategic flexibility.

The current state of knowledge of both theory and practise for critical organizational factors such as organizational culture, strategic flexibility, industry 4.0 capabilities and market orientation will be extended.

This paper aims to examine the question, “How do firm-level, home-country and host-country environmental performance (EP) affect the outward foreign direct investment (OFDI) of Chinese multinational enterprises (MNEs)?”

The authors examine the relationships between EP and OFDI propensity and between EP and OFDI intensity using a sample of 359 Chinese firms in industries with a significant environmental footprint between 2009 and 2019 (2,002 firm-year observations) and a Heckman two-stage model.

This study shows that the propensity for OFDI by Chinese MNEs is significantly and positively related to the firm’s prior EP and the country-level EP of China. However, the amount of FDI invested is significantly and positively related to the firm’s prior EP and negatively related to the EP of the host country.

The findings suggest that FDI in a country by an MNE is determined by a combination of firm-level EP, home-country EP and host-country EP. This study finds that the decision to undertake FDI (propensity) and the decision about how much to invest (intensity) are determined by different factors. The propensity for FDI is determined by the home-country EP and firm-level EP. However, the intensity of FDI is determined by a combination of the host country EP and firm-level EP. A limitation is that this study only examines MNEs in China, so the findings may not apply to other countries.

This paper shows that MNEs’ EP is positively related to the propensity and intensity of their OFDI decisions. However, this paper shows that the home-country and host-country EP may also play an important role in determining the propensity or intensity of OFDI.

This study examines the transformation of labour non-governmental organisations (NGOs) operating in Mainland China since the enactment of the 2017 Overseas NGO Management Law, which aims to regulate foreign concerns functioning outside the direct control of the state. It focuses on the extent to which these organisations have responded to the rapidly changing political and social environment by altering their goals and strategies in support of migrant workers. It also considers the relevance of Western social movement theories (SMTs) to China's grassroots labour movement in the 2020s. 

The research is based on case studies of ten labour NGOs operating in Beijing, Tianjin and Yunnan. It draws upon fifteen semi-structured interviews with the founders, leaders and activists affiliated with those organisations, as well as records and documented information of each of those organisations.

While the power and influence of labour NGOs markedly diminished, most have been able to adapt their goals and the strategies remain sustainable amidst both China's changing political and social climates and the global pandemic. It suggests that conventional SMTs can still offer valuable insights into understanding the development of labour NGOs in China, although they might not fully interpret the specific conditions and challenges faced by these organisations.

This study stands out as one of very few to offer empirical evidence on the inner workings of China's labour NGOs over the last six years. It also contributes to our understanding of social movements in a non-Western context.

While the main emotional labor strategies are well-documented, the manner in which professionals navigate emotional rules within the workplace and effectively perform emotional labor is less understood. With this contribution, I aim to unveil “the good, the bad and the ugly” of emotional labor as a dynamic theatrical performance.

Focusing on three geriatric long-term care units within a French public hospital, this qualitative study relies on two sets of data (observation and interviews). Deeply rooted within the field of study, the chosen methodological approach substantializes the subtle hues of the emotional experience at work and targets resonance rather than generalization.

Using the theatrical metaphor, this research underlines the role of space in the practice of emotional labor in a unique way. It identifies the main emotionalized zones or emotional regions (front, back, transitional, mixed) and details their characteristics, before unearthing the nonlinearity and polyphonic quality of emotional labor performance and the versatility needed to that effect. Indeed, this research shows how health-care professionals juggle with the specificities of each region, as well as how space generates both constraints and resources. By combining static and dynamic prisms, diverse instantiations of hybridity and spatial in-betweens, anchored in liminality and trajectories, are revealed.

This research adds to the current body of literature on the concept of emotional labor by shedding light on its highly dynamic and interactional nature, revealing different levels of porosity between emotional regions and how the characteristics of each type of area can taint others and increase/decrease the occupational health costs of emotional labor. The study also raises questions about the interplay of emotional labor performance with the level of humanization/dehumanization of elderly people. Given the global demographics about an aging population, this gives food for thought at a social level.

The purpose of the current study is to help remove the obstacles to sustainable production and consumption by revealing the determinants of green consumption behaviour, which is one of the precursors of sustainable economic growth. This study aims to expand the theory of planned behaviour (TPB) model and contribute to the relevant literature by investigating the factors of social media usage, social media marketing and digital marketing interactions that have not been investigated before in relation to green product purchasing behaviour.

This study examines the effect of the extended TPB model on consumers’ intention to buy green products in Turkey, which has a Middle Eastern culture and is a developing economy. In the study, data collected from 409 participants with the questionnaire method were analysed using SmartPLS 4.0 and IBM SPSS 26 statistical programs.

The study findings revealed that all the structural elements of TPB (attitude, subjective norms, personal behaviour controls) and social media marketing and digital marketing interactions contribute to consumers’ green product purchasing behaviour. The study findings also demonstrated that the use of social media is not effective in the purchasing of green products.

Understanding consumers’ perspective on purchasing green products is crucial for policymakers, businesses and marketers, as it helps formulate appropriate strategies to support sustainable economic growth. In this respect, this study has important implications for sustainable consumption and production. In addition, to the best of the authors’ knowledge, the study is the first to examine consumers’ green product purchasing behaviour in the context of sustainable economy.

This paper contributes to the development of an enhanced understanding of the breakout strategies of immigrant entrepreneurs within a transnational context. It develops a dynamic notion of breakout by placing it within a wider understanding of immigrant entrepreneurial strategy characterised by multifocal embeddedness within transnational space.

This study adopted a qualitative research methodological approach. In-depth interviews were completed with 30 first- and second-generation UK-based Nigerian entrepreneurs and key informants, to provide data on business growth strategies of individual immigrant entrepreneurs in the context of opportunity structures across host, home and third countries.

Nigerian immigrant entrepreneurs adopted distinctive entrepreneurial strategies related to the complex and diverse transnational context within which they were embedded. Findings demonstrated how the realisation of diversification and differentiation strategies was particularly influenced by locational and spatial strategies, the specific contextual embeddedness of the entrepreneur and generational differences across entrepreneurs.

Conceptualising immigrant entrepreneurship from a standpoint of transnational, multifocal embeddedness produces a complex and multi-layered understanding of business breakout as a dynamic process. Drawing together the unifocal, bifocal and multifocal dimensions of embeddedness with findings on the breakout strategies being pursued by immigrant entrepreneurs, an original typology is presented which identifies different approaches to breakout across varied contexts. This has significant policy and practice implications for the content, targeting and access of business support and wider social issues, relating to the identities, social mobility and integration of immigrant entrepreneurs.

The purpose of this paper is to present an optimisation of four-point star-shaped structures produced through additive manufacturing (AM) polylactic acid (PLA). The study also aims to investigate the compression failure mechanism of the structure.

A Taguchi L₉ orthogonal array design of the experiment is adopted in which the input parameters are resolution (0.06, 0.15 and 0.30 mm), print speed (60, 70 and 80 mm/s) and bed temperature (55°C, 60°C, 65°C). The response parameters considered were printing time, material usage, compression yield strength, compression modulus and dimensional stability. Empirical observations during compression tests were used to evaluate the load–response mechanism of the structures.

The printing resolution is the most significant input parameter. Material length is not influenced by the printing speed and bed temperature. The compression stress–strain curve exhibits elastic, plateau and densification regions. All the samples exhibit negative Poisson’s ratio values within the elastic and plateau regions. At the beginning of densification, the Poisson’s ratios change to positive values. The metamaterial printed at a resolution of 0.3 mm, 80 mm/s and 60°C exhibits the best mechanical properties (yield strength and modulus of 2.02 and 58.87 MPa, respectively). The failure of the structure occurs through bending and torsion of the unit cells.

The optimisation study is significant for decision-making during the 3D printing and the empirical failure model shall complement the existing techniques for the mechanical analysis of the metamaterials.

To the best of the authors’ knowledge, for the first time, a new empirical model, based on the uniaxial load response and “static truss concept”, for failure mechanisms of the unit cell is presented.