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Friction pairs of the hydro-viscous drive speed regulating start device should be designed based on the rated torque. To obtain design basis of the rated torque of the hydro-viscous drive speed regulating start device, studies on effect of torque ratio (a ratio of the load torque to the rated torque) on speed regulating start were carried out theoretically and experimentally.

Under different torque ratio, the modified Reynolds, the thermal energy and the viscosity-temperature equations were solved simultaneously by using finite element method to reveal variation laws of the oil film load capacity and torque transmission during the starting process. Then, speed regulating start experiments were carried out to study the following performance of the output speed.

The results show that oil film thickness decreases with the increase of the torque ratio; when oil film thickness is less than 0.05 mm, oil film temperature increases rapidly with the decrease of oil film thickness, which eventually deteriorates performance of the speed regulating start; when the torque ratio decreases to about 0.3, output speed shows a better following performance.

It indicates that, to acquire a better speed regulating start, the rated torque of the hydro-viscous drive speed regulating start device should not be less than three times of the load torque. Achievements of this work provide theoretical basis for optimal design of the friction pairs of the hydro-viscous drive speed regulating start device.

The purpose of this study is to address the issue that the traditional V-shaped ball valve profile shape is limiting the flow control characteristics in a series structure and to optimize the design profile by proposing an open-hole profile.

This paper proposes a Gaussian process regression surrogate model based on the genetic algorithm optimization of swarm intelligence, combined with the Expected Improvement point addition criterion, to optimize and correct the design profile. The flow regulation performance of the optimized V-shaped regulating ball valve is verified through a combination of numerical simulation and experiment.

The results demonstrate that the optimized V-shaped regulating ball valve has higher flow regulation accuracy and a more stable flow regulation process. After optimization, the flow characteristic curve of the spool is closer to the ideal equal percentage characteristic. The simulation results of the flow field are consistent with the experimental results.

The proposed method significantly reduces the optimization time, has higher efficiency and solves the problem that traditional optimization methods struggle with, which is ensuring optimal flow regulation performance. Compared to the traditional trial-and-error optimization method, the proposed method is more effective. The feasibility of the method is supported by experimental results.

The purpose of this paper is to reveal the mechanism of effect of surface groove on speed‐regulating start.

This paper investigates numerically and analytically the torque transfer and load capacity of oil film between separator and friction disc with grooves commonly used at present by solving simultaneous equations: modified Reynolds, energy, and temperature‐viscosity equations.

The results show friction discs with wider and deeper groove are not suitable for speed‐regulating start. To improve performance of speed‐regulating start, distribution and size of surface groove should be designed to obtain ascending trend of oil film load capacity during startup process.

This paper reveals the mechanism of effect of surface groove on speed‐regulating start and facilitates the conceptual design of speed‐regulating start control system.

The purpose of this paper is to reveal the effect of working oil temperature, load and starting time on hydro‐viscous drive speed‐regulating start.

The authors developed an experimental equipment and carried out a number of experiments under different temperatures, load and starting time.

The results show that both the temperature rise of working oil and the increase of load can induce fluctuations in output speed, but the effect of the working oil temperature rise is more serious; also the longer the starting time is, the more perfectly the output speed can trace the given speed.

It indicates that the working oil temperature should be kept in a certain range by using a cooling device in practical application; and that under this experimental condition, kinematics viscosity of the working oil should be greater than 45 mm²/s under rated working temperature, and the relatively suitable starting time should range from 90 to 120 s.

The paper explains the effect of various factors on speed‐regulating start, and provides the basis for the design and the application of hydro‐viscous drives.

The concept of the self‐regulating work group is not new. Whilst much has been written about it there are no reliable statistical data about its incidence, perhaps because of the difficulty of adequately describing this form of work organisation. Its use, however, would not appear to be widespread. Nevertheless, it remains one of a variety of work forms for companies to consider in searches for enhanced productivity, flexibility, employee involvement and work satisfaction. It is with this in mind that some of the basic ideas underpinning the self‐regulating work group and conditions surrounding its introduction are considered.

Collaborative consumption, such as car sharing, specifically implicates customer-to-customer interaction, which must be regulated by service providers (companies, peers and self-regulating communities), comprising different challenges for business organizations. While in conventional business relations, consumers are protected from undesirable customer behavior by laws, regulations (power) in the context of collaborative consumption are rare, so that trust becomes more relevant. It is the purpose of the study to investigate possible mechanisms to prevent undesirable customers in collaborative consumption.

In between subject designs, samples of 186 and 328 consumers filled in experimental online questionnaires with vignettes. Analyses were made of differences among car sharing companies, private persons and car sharing communities in terms of the power of providers, trust in providers and trust in other users of the shared goods, undesirable customer behavior and consumer–provider relations.

Companies, private persons and self-regulating communities differ in terms of perceived power and trust. Participants specifically perceive mainly coercive power with the car sharing company, but with the private person and the community, reason-based trust in other users is perceived as prevalent. Nevertheless, undesirable customer behavior varies only marginally over the models.

The present study is the first to investigate measures to prevent undesirable customer behavior over different collaborative consumption models. This enables appropriate identification of market segments and tailoring of services. The study identifies opportunities for companies in contrast to private persons and self-regulating communities and, in doing so, provides important stimulation for marketing strategy and theory development.

This study aims to perform a systematic review of the dialectics and telematics strategy for regulating religion during the COVID-19 pandemic. The study also analyzes some important issues related to religions, state, and society.

A critical literature review was performed to complete this study, using media, institutional, national, and international reports, as well as recent and previous studies during the COVID-19 pandemic.

Religion was one of the social entities that had a crucial effect on the COVID-19 pandemic. The new system in the form of social distancing affects its performance. Furthermore, the response of religion in Indonesia is unique when its status is considered as the largest Islamic country in the world. Therefore, this study attempts to analyze and demonstrate the dynamics of relationships between actors, religion, and state in the process and strategy of religious regulation.

This study was carried out using a single methodological approach.

This study provides input to both religion and the state (government) in building a synergy of constructive responses to the effects of the COVID-19 pandemic.

It provides input to society in understanding the critical intersection between religion, state, and society.

This may be the first academic study that analyzes the problems of the process of regulating religion in the context of COVID-19.

Critics increasingly highlight the dark sides of the sharing economy resulting from the insufficient regulation of competition, labor, or taxes in its for-profit sector. In this chapter, the authors argue that regulatory solutions for the sharing economy hinge on the understanding of the ways in which the sharing economy is organized. Here, digitalization undermines established regulation through underlying organizational shifts pertaining to places, labor inputs and output responsibilities. Mapping out the field of actors that are or could be involved in regulating the sharing economy, the authors highlight a particular role played not only by digital platforms as market organizers, but also of a variety of other public and private actors such as standard setting organizations, social movements, trade unions, organized buyers and sellers, incumbents, or policy makers. The authors suggest that an understanding of sharing economy markets as fields can not only capture the highly organized nature of the sharing economy, but also serve to untangle the contestations and power dynamics unfolding among various actors engaged in different regulatory issues associated with the sharing economy. Seeing “Uberization” as a next development stage away from the modern corporation after global supply chains, the authors highlight regulatory challenges associated with the even more individualized and dispersed way in which sharing economy markets are organized and also discuss new opportunities for regulation provided by digital technology.

By analysing the physical mechanisms of heat and moisture transfer through textiles with PCM and carrying out the test of thermal regulating functional performance of PCM garment in climate chamber, the thermal regulating functional performance of PCM garments have been analysed and discussed in this paper. Both numerical solution and experimental results show that during the phase change process the rate of temperature rise of garment with higher PCM add‐on level was lower than that with less PCM. From theoretical analysis and experiment curve, the parameter of k was proposed and discussed, which is used to represent the rate of temperature change and the thermal regulating functional performance of PCM garments. It has been demonstrated that the higher the PCM add‐on level contained in the garment, the lower is the value of k, and slower the temperature raised in the garment, the higher is the effect of thermal regulating.

The article addresses the tension between Corporate Social Responsibility (CSR) and the right to work in times of the COVID-19 pandemic. Accordingly, it explores the operation of corporations in adopting policies of mandatory vaccination and the role of the courts regarding these CSR patterns.

The article examines court case studies of CSR practices regarding unvaccinated employees during the COVID-19 pandemic in Israel and the United States.

The findings show that the Israeli system adopted the regulating for individual discretionary CSR approach, whereas the American system adopted the regulating for ethical-public CSR approach. Adopting the latter infringes upon the right to work of unvaccinated employees. While in Israel, the possibility of compelling employees to vaccinate is denied, in the American model, mandatory vaccination is possible. As opposed to the American model, in the Israeli model, there is an obligation to consider proportionate measures to isolate the employees while allowing them to continue working.

The article introduces two possible notions of regulating CSR in times of the pandemic – regulating for individual discretionary CSR which is labor-oriented and regulating for ethical-public CSR which is focused on public aspects. While the former posits that corporations should advance individual interests of employees and their right to work, the latter claims that corporations should advance the public interest in health. Following the problems resulting from the Israeli and American cases, the article draws on the lines for a suggested approach that courts should embrace.