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Slim and dexterous manipulators with long reaches can perform various exploration and inspection tasks in confined spaces. This paper aims to present the development of such a dexterous continuum manipulator for potential applications in the aviation industry.

Benefiting from a newly conceived dual continuum mechanism and the improved actuation scheme, this paper proposes a design of a slim and dexterous continuum manipulator. Kinematics modeling, simulation-based dimension synthesis, structural constructions and system descriptions are elaborated.

Experimental validations show that the constructed prototype possesses the desired dexterity to navigate through confined spaces with its kinematics calibrated and actuation compensation implemented. The continuum manipulator with different deployed tools (e.g. graspers and welding guns) would be able to perform inspections and other tasks at remote locations in constrained environments.

The current construction of the continuum manipulator possesses quite some friction inside its structure. The bending discrepancy caused by friction could accumulate to an obvious level. It is desired to further reduce the friction, even though the actuation compensation had been implemented.

The constructed continuum manipulator could perform inspection and other tasks in confined spaces, acting as an active multi-functional endoscopic platform. Such a device could greatly facilitate routine tasks in the aviation industry, such as guided assembling, inspection and maintenance.

The originality and values of this paper mainly lay on the design, modeling, construction and experimental validations of the slim and dexterous continuum manipulator for the desired mobility and functionality in confined spaces.

Logistics capability is an important enabler of supply chain resilience (SCR). However, few studies have analyzed the underlying influence mechanism of logistics capability on SCR in extreme conditions, such as those of the COVID-19 pandemic. The purpose of this study is to increase understanding of the role of logistics capabilities in constituting a resilient supply chain.

Drawing upon the dynamic capability perspective and contingency theory, the proposed conceptual framework aims to demonstrate the relationship between a firm's logistics capabilities and SCR. Furthermore, the conceptual framework is illustrated by empirical evidence from a case study of a Chinese manufacturing company, which focuses on extracting practical lessons from the COVID-19 pandemic.

The findings suggest that digitalization, innovativeness, and modularization comprise potential mediating pathways for firm logistics capability to affect SCR and government policies, risk management culture, trust and cooperation moderate the effect positively. The potential associations are identified and elucidated by detecting the corresponding strategies and practices of a Chinese manufacturer that performed well amid the COVID-19 pandemic.

This study provides specific guidelines for logistics managers to enhance SCR during the COVID-19 pandemic. Seeing SCR as a dynamic capability, the framework is also instructive for manufacturers, supply chain members, and policymakers to achieve the sustained competitive advantage of supply chains.

The findings expand the understanding of enhancing SCR in a logistics approach. The empirical validation of propositions in the case study reveals a new vista for research on SCR.

The purpose of this paper is to investigate the association between corporate tax aggressiveness and cash holdings and that between corporate tax aggressiveness and the value of cash. Further, this study explores the impact of the tax enforcement level on the above associations.

Under a Chinese special institutional background, this study constructs tax aggressiveness and tax enforcement measures. On this basis, using a sample of Chinese A-share listed companies over the period from 1990 to 2010, this study empirically tests the association between tax enforcement, corporate tax aggressiveness, and cash holdings.

By empirically testing with Chinese listed companies as the sample, this paper finds the following: with the increase in the tax avoidance level, the precautionary incentives of cash, and the level of financial constraint likewise increase, which will make the level of firm cash savings increase. Meanwhile, although tax avoidance will induce lower transparency and higher agency costs, the marginal value of the cash held by the more aggressive firms is higher due to the higher market competition effect of the cash. Additional tests suggest that, the tax enforcement level can weaken the effect of tax avoidance on the transparency and agency problem; however, because the tax enforcement level can also increase the tax risk of the firm, the positive relation between firm’s tax avoidance and cash savings is strengthened correspondingly. On the value of cash holdings, the tax enforcement level can also make the marginal value of tax aggressive firms higher.

First, this paper provides new evidence on the determinants of firm’s cash holdings from the perspective of cash savings. Second, this paper examines the association between Chinese firm’s tax aggressiveness and the value of cash, which not only provides evidence for the local tax literature but also has reference value for the foreign literature. Third, this paper has reference value for research on the association between corporate tax avoidance activities and other operating decisions. Finally, this paper not only provides new evidence on the association between tax enforcement and corporate governance, but also extends the prior literature on the association between corporate tax aggressiveness and cash holdings.

This paper aims to investigate the distributed coordinated fuzzy tracking problems for multiple mechanical systems with nonlinear model uncertainties under a directed communication topology.

The dynamic leader case is considered while only a subset of the follower mechanical systems can obtain the leader information. First, this paper approximates the system uncertainties with finite fuzzy rules and proposes a distributed adaptive tracking control scheme. Then, this paper makes a detailed classification of the system uncertainties and uses different fuzzy systems to approximate different kinds of uncertainties. Further, an improved distributed tracking strategy is proposed. Closed-loop systems are investigated using graph theory and Lyapunov theory. Numerical simulations are performed to verify the effectiveness of the proposed methods.

Based on fuzzy control and adaptive control theories, the desired distributed coordinated tracking control strategies for multiple uncertain mechanical systems are developed.

Compared with most existing literature, the proposed distributed tracking algorithms use fuzzy control and adaptive control techniques to cope with system nonlinear uncertainties of multiple mechanical systems. Moreover, the improved control strategy not only reduces fuzzy rules but also has higher control accuracy.

Olfaction plays a very important role in daily life. The olfactory system has the ability to recognize, discriminate and identify thousands of odorant compounds with extremely high sensitivity and specificity. The research on olfactory system has very important values in exploring the mechanisms of information processing in the other sensory nervous systems and brain. Recently, with the development of molecular biological and microelectronics technology research, the study of olfactory cell-based sensors has made great progress. The purpose of this paper is to provide details of recent developments in olfactory cell-based sensors.

Following an introduction, this paper first discusses some olfactory cell-based biosensors, which focus on the light-addressable potentiometric sensors and the microelectrode arrays. Second, surface modification, microfabrication and microfluidic technology which can improve the efficiency of cell immobilization will be summarized. The research trends of olfactory cell-based sensor in future will be proposed.

This paper shows that the biosensors’ performance is expected to be greatly improved due to the fast development of nanotechnology, optical technology and microelectronics. More and more emerging intelligent olfactory sensors will have a promising prospect in many application fields, including food quality and safety assessment, environmental monitor and human diseases detection.

This paper provides a detailed and timely review of the rapidly growing research in the olfactory cell-based sensors.

This special issue aims to address the complexities and dynamics in contemporary China’s citizen-making processes, with a focus on the educational dimension.

The four articles in this special issue present citizen-making processes in both educational and cultural arenas. Based on the rich, first-hand data collected inside and outside China, the researchers revealed the dynamics of the educative processes, as the interplay of different mechanisms produces new understandings of citizenship practice.

This special issue sheds light on the rise of new types of citizens, who are emerging at the grassroots level in China, beyond the state’s strict direct regulations, along with the rise of market forces and multicultural communities in Chinese society today. Contributors to this special issue have captured an ongoing change, in that the diversified citizen-making mechanisms are, to a certain extent, mitigating the party-state’s definitive monopoly on forging citizens and are creating new spaces for individuals to develop fresh forms of political subjectivity and citizenship practice. In this sense, we argue for the unpacking of the citizen-making processes in present-day China not only from the lens of state-dominated, top-down initiatives but also from that of participatory, bottom-up initiatives performed by grassroots groups with differentiated socio-economic statuses and cultural traditions.

This special issue can be regarded as a contribution to the growing field of Chinese citizenship studies, which constitutes an integral part of the unfinished project of citizenship after orientalism.

Inefficiency dilemmas in project governance are caused by various risks arising from the characteristic of construction supply chain projects, such as poor project performance, conflicts between stakeholders and cost overrun. This research aims to establish a fuzzy synthetic evaluation (FSE) model to analyze construction supply chain risk factors. Corresponding risk mitigation strategies are provided to facilitate the improvement performance of ongoing construction supply chain projects.

A literature review is utilized to reveal the deficiencies of construction supply chain risk management. Thus, a total of five hundred (500) questionnaires are distributed to construction professionals, and four hundred and thirty-five (435) questionnaires are recovered to obtain the evaluation data of construction professionals on critical risk factors. Additionally, the FSE is used to analyze and rank the significance of critical risk factors. Finally, this research discusses nine critical risk factors with high weight in the model, and explains the reason for the significance of critical risk factors in the construction supply chain.

The questionnaire results show that the thirty-one (31) identified critical risk factors are verified by related practitioners (government departments, universities and research institutions, owners, construction units, financial institutions, design units, consulting firms). Thirty-one (31) identified critical risk factors are divided into common risks, risks from contractors and risks from owners. The most significant factors in the three categories, respectively, are “political risks,” “owner's unprofessional” approach and “cash flow.” Managing these risks can facilitate the development of the construction supply chain.

This paper expands the research perspective of construction supply chain risk management and complements the risks in the construction supply chain. For practitioners, the research result provides some corresponding measures to deal with these risks. For researchers, the research result provides the direction of construction supply chain risk treatment.