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As China's economy begins to transform into a high-quality development, and under the national “carbon peak and carbon neutral” target, all sectors of society and industries need to transform to green development to varying degrees, coupled with the catalyst of epidemics and other factors, new development requirements are put forward for enterprises to better fulfill their climate risk disclosure behaviors. Thus, it is clear that improving corporate climate risk disclosure is of far-reaching significance to both countries and enterprises.

This study incorporates management science, psychology and other related knowledge fields, based on stakeholder theory and media dependency theory, and aims to improve the level of corporate compliance with climate risk disclosure, suggesting the influence of entrepreneurs' visibility on corporate climate risk disclosure; on this basis, the role of entrepreneurs' visibility and media attention on corporate climate risk disclosure is verified through an empirical model; finally, targeted and effective response strategies are proposed to improve corporate climate risk disclosure, set reasonable media attention and increase the effectiveness of entrepreneurs' visibility.

This paper establishes a multiple regression model using A-share listed companies in China from 2016 to 2022 as the research sample, verifies the intrinsic association between entrepreneurial visibility and corporate climate risk climate disclosure through empirical analysis, and further examines the mediating role of media attention in the relationship between the two. The results show that entrepreneurs' visibility is positively related to the level of corporate climate risk disclosure, with media attention playing a part in mediating the relationship between the two. Increasing entrepreneurs' visibility is conducive to increasing the level of corporate climate risk disclosure. Therefore, it contributes to the dual incentive effect of reputation and compensation.

This study incorporates management science, psychology and other related knowledge fields, based on stakeholder theory and media dependency theory, and aims to improve the level of corporate compliance with climate risk disclosure, suggesting the influence of entrepreneurs' visibility on corporate climate risk disclosure; on this basis, the role of entrepreneurs' visibility and media attention on corporate climate risk disclosure is verified through an empirical model; finally, targeted and effective response strategies are proposed to improve corporate climate risk disclosure, set reasonable media attention and increase the effectiveness of entrepreneurs' visibility.

This paper believes that while implementing the gradual delay retirement age policy in China, the impact should be considered comprehensively; we should pay attention to impacts brought by the delayed retirement policy and introduce policies to deal with the impacts in a timely manner.

This paper aims to explore the delayed retirement’s impact on women’s labor supply and to clarify the elderly care’s role in it.

The results found that the delayed retirement has a positive effect on the women’s overall and young women’s labor supply, with a more significant promotion for young women’s labor supply. The mediation results suggest that delayed retirement promotes women’s labor supply by affecting elderly care. Therefore, we believe that while implementing the gradual delay retirement policy in China, it is important to implement it on the correct estimation basis so as to reduce the volatility in the labor market.

This paper may produce marginal contributions in the following two aspects: From the research perspective, we construct a model containing delayed retirement, elderly care and women’s labor supply and illustrate how the delayed retirement promotes women’s labor supply by affecting elderly care. Secondly, from the research content, this paper expands the delayed retirement on macro-employment and further explores the micro-impact on employment.

Forming ties with prominent partners can help convey greater status and legitimacy to the company (Hallen, 2008) and also increases the entrepreneur’s influence within their own network (Bonacich, 1987). This allows entrepreneurs to gain greater access to the information, experience or resources that the company needs.

The founders of the company provided us with access to the inner workings of the company, their mentors and advisors and themselves. The authors used archival research and interviews when preparing this case. Interviews allow for the development of uncensored, real-life insights into the entrepreneur’s business experience. The authors also interviewed two of their mentors and investors.

Having graduated from UMass Lowell with engineering degrees, co-founders Rajia Abdelaziz and Ray Hamilton build invisaWear into a venture, but they did not know much about business. With coaching from their mentors, Rajia and Ray focused on building their network to raise capital to finance the business. Despite all their hard work networking, however, they faced a hurdle. Rajia and Ray contemplated their dilemma. “Are the authors doing something wrong? What can the authors do differently to attract investors?”

This case is suitable for an undergraduate course in business or entrepreneurship. This case is intended to illustrate to both business and non-business students how entrepreneurs can go about building their networks to grow their businesses. Presented as a real-life example of how entrepreneurs build their networks, the case can also be used to hone in on select topics including mentoring, searching for resources and coachability.

Why do some individuals become entrepreneurs while others do not? This fundamental question has vexed entrepreneurship scholars for some time, giving rise to various schools of thought. Traditional economic motivation theories, for example, suggest that entrepreneurial opportunities arise from changes in either supply (Shane, 2000) or demand (Dew et al., 2004) and emphasize personal economic gain as a motivator for pursuing entrepreneurship. Both neoclassical equilibrium and psychological theories take a person-centric perspective whereby stable, enduring differences among people’s characteristics, determines who becomes an entrepreneur. Opportunity recognition may be enhanced through perspective taking (i.e. putting oneself in the shoes of another person) (Prandelli et al., 2016).

The founders of the company provided us with access to the inner workings of the company, their mentors and advisors and themselves. This study used archival research and interviews when preparing this case. Interviews allow for the development of uncensored, real-life insights into the entrepreneur’s business experience. The authors first conducted a 90-min interview with Rajia and Ray at DifferenceMaker^® Central on the UMass Lowell campus. DifferenceMaker^® provided us with pictures and timelines from when Rajia and Ray participated in the various DifferenceMaker^® activities and competitions. A follow-on 90-min interview was conducted with the founders four months later at the UMass Lowell Innovation Hub to delve deeper into their transition from engineers to entrepreneurs.

In the summer of 2016, the future of invisaWear suddenly became uncertain. Rajia Abdelaziz and Ray Hamilton had conceived an idea for smart jewelry that they felt solved a real problem. But it was one thing to have a great idea and quite another to turn that idea into a real business. As engineering students, they were accustomed to solving problems, but if they truly wanted to make an impact, they had to learn to solve problems as entrepreneurs. With the help of DifferenceMaker^® and their mentors, they developed an entrepreneurial mind-set and decided to build invisaWear into a company.

This case is suitable for an undergraduate course in business or entrepreneurship. This case is intended to illustrate to both business and non-business students how individuals with different backgrounds can become entrepreneurs. Presented as a real-life example of how engineering students can make the transition to an entrepreneurial mind-set, the case can also be used to hone in on select topics including opportunity recognition, problem-solving, ideation and the business model canvas.

The purpose of this study is to prepare ZnFe₂O₄ nanospheres, sheet MoS₂ and three ZnFe₂O₄@MoS₂ core-shell composites with various shell thicknesses, and add them to the base oil for friction and wear tests to simulate the wear conditions of hybrid bearings.

Through the characterization and analysis of the morphology of wear scars and the elemental composition of friction films, the tribological behavior and wear mechanism of sample materials as lubricant additives were investigated and the effects of shell thickness and sample concentration on the tribological properties of core–shell composite lubricant additives were discussed.

The findings demonstrate that each of the five sample materials can, to varying degrees, enhance the lubricating qualities of the base oil and that the core–shell nanocomposite sample lubricant additive has superior lubricating properties to those of ZnFe₂O₄ and MoS₂ alone, among them ZnFe₂O₄@MoS₂-2 core–shell composites with moderate shell thickness performed most ideally. In addition, the optimal concentration of the ZnFe₂O₄@MoS₂ lubricant additive was 0.5 Wt.%, and a concentration that was too high led to particle deposition and affected the friction effect.

In this work, ZnFe₂O₄@MoS₂ core–shell composites were synthesized for the first time using ZnFe₂O₄ as the carrier and the lubrication mechanism of core–shell composites and single materials were compared and studied, which illustrated the advantages of core–shell composite lubricant additives. At the same time, the influence of different shell thicknesses on the lubricant additives of core–shell composites was studied.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-12-2022-0367/

The purpose of this paper is to focus on the characteristics, efficiencies and interaction of many alternative market governance modes, by the approach of comparative institutional experimentation.

First, a highly simplified model of market economy is developed, which is embedded in a three‐layer governance structure. Then the model is transplanted into laboratory experimentation, so the characteristics and efficiencies of different governance modes can be identified by observing the subjects' behaviors under them.

The experimental results show that the market with governance structure based on rule is more efficient than the market with governance only based on long relation and based on preference or belief, and the dynamic improvement of governance based on rule has a destructive effect on the governance based on relation and governance based on preference or belief.

These results have profound implications for the development or enhancement of market institutions in transition or developing countries.

The purpose of this article is to prepare graphene/polyimide composite materials for use as bearing cage materials, improving the friction and wear performance of bearing cages.

The oil absorption and discharge tests were conducted to evaluate the oil content properties of the materials, while the mechanical properties were analyzed through cross-sectional morphology examination. Investigation into the tribological behavior and wear mechanisms encompassed characterization and analysis of wear trace morphology in PPI-based materials. Consequently, the influence of varied graphene nanoplatelets (GN) concentrations on the oil content, mechanical and tribological properties of PPI-based materials was elucidated.

The composites exhibit excellent oil-containing properties due to the increased porosity of PPI-GN composites. The robust formation of covalent bonds between GN and PPI amplifies the adhesive potency of the PPI-GN composites, thereby inducing a substantial enhancement in impact strength. Notably, the PPI-GN composites showed enhanced lubrication properties compared to PPI, which was particularly evident at a GN content of 0.5 Wt.%, as evidenced by the minimization of the average coefficient of friction and the width of the abrasion marks.

This paper includes implications for elucidating the wear mechanism of the polyimide composites under frictional wear conditions and then to guide the optimization of oil content and tribological properties of polyimide bearing cage materials.

In this paper, homogeneously dispersed PPI-GN composites were effectively synthesized by introducing GN into a polyimide matrix through in situ polymerization, and the lubrication mechanism of the PPI composites was compared with that of the PPI-GN composites to illustrate the composites’ superiority.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-12-2023-0415

This study aims to prepare thymol-based deep eutectic solvents (DESs) and use them as lubricates for friction and wear tests to simulate the wear conditions of hybrid bearings.

Through the characterization and analysis of the morphology of wear scars and the elemental composition of friction films, the tribological behavior and wear mechanism of sample materials as lubricants were investigated and the anti-wear mechanism of thymol-based DESs was discussed.

The findings demonstrate that because of the formation of a fluid lubrication film and excellent kinematic viscosity, the lubrication effect of the prepared DES is improved by about 50% compared to the base lubricating oil. The prepared [Ch]Cl-thymol DES has a better anti-friction and lubrication effect than citric-thymol, EG-thymol and urea-thymol DESs, with an average friction coefficient of about 0.04.

In this work, the friction reduction properties of thymol-based DESs were studied as lubricants for the first time, and the lubrication mechanism of sample materials was investigated.

Viscous dampers are commonly used in large span cable-stayed bridges to mitigate seismic effects and have achieved great success.

However, the nonlinear analysis on damper parameters is usually computational intensive and nonobjective. To address these issues, this paper proposes a simplified method to determine the viscous damper parameters for double-tower cable-stayed bridges. An empirical formula of the equivalent damping ratio of viscous dampers is established through decoupling nonclassical damping structures and linearization of nonlinear viscous dampers. Shaking table tests are conducted to verify the feasibility of the proposed method. Moreover, this simplified method has been proved in long-span cable-stayed bridges.

The feasibility of this method is verified by the simplified model shaking table test. This simplified method for determining the parameters of viscous dampers is verified in cable-stayed bridges with different spans.

This simplified method has been validated in cable-stayed bridges with various spans.

Hand, foot and mouth disease (HFMD) is a common infectious disease in infants and children. HFMD has caused millions of cases and a large epidemic worldwide. A number of studies have shown that the incidence of HFMD is closely related to various factors such as meteorological factors, environmental air pollution factors and socio-economic factors. However, there are few studies that systematically consider the impact of various factors on the incidence of HFMD. The paper aims to discuss these issues.

This study used grey correlation analysis and principal component analysis (PCA) method to systematically analyse the impact of meteorological factors, health resource factors, socio-economic factors and environmental air pollution factors on the incidence of HFMD in Shenzhen.

The incidence of HFMD in Shenzhen was affected by multiple factors. Grey correlation analysis found eight influencing factors which are as follows: volume of industrial waste gas emission; the days of air quality equal to or above grade; the volume of industrial nitrogen oxide emission; precipitation; the mean air temperature; the gross domestic product; the expenditure for medical and health care; and the gross domestic product per capita. PCA found that the gross domestic product, the volume of industrial soot emission, the relative humidity, and the days of air quality equal to or above grade have a higher load value.

This study is the one of the first studies that apply the grey correlation analysis to analyse the influencing factors of HFMD in the English literature, which to some extent fills up the blank in this field.