Search results
1 – 10 of 233Huan Liu, Rui Wang, Junyao Wang, Xingyu Chen, Yunpeng Li, Bowen Cui, Tianhong Lang and Weihua Zhu
Flexible pressure sensor arrays have promising applications in analog haptics, reconfiguration of sensory functions, artificial intelligence, wearable devices and human-computer…
Abstract
Purpose
Flexible pressure sensor arrays have promising applications in analog haptics, reconfiguration of sensory functions, artificial intelligence, wearable devices and human-computer interaction. The force disturbance generated by the connecting material between the sensor array units will reduce the detection accuracy of the unit. The purpose of this paper is to propose a flexible pressure sensor with interference immunity capability. A C-type bridge flexible piezoelectric structure is used to improve the pressure perturbation. The interference immunity capability of the sensor has been improved.
Design/methodology/approach
In this paper, a C-type pressure sensor array structure by rapid injection moulding is manufactured through the positive piezoelectric effect of a piezoelectric material. The feasibility of C-type interference immunity structure in a flexible sensor array is verified by further analysis and experiment. A flexible pressure sensor array with C-type interference immunity structure has been proposed.
Findings
In this paper, we present the results of the perturbation experiment results of the C-type pressure sensor array, showing that the perturbation error is less than 8%. The test of the flexible sensor array show that the sensor can identify the curved angle of up to 120 °, and the output sensitivity of the sensor in the horizontal state reaches 0.12 V/N, and the sensor can withstand the pressure of 80 N. The flexible sensor can work stably in the stretch rate range of 0–8.6% and the stretch length range of 0–6 mm.
Originality/value
In this paper, C-type pressure sensor array structure is fabricated by rapid injection moulding for the first time. The research in this paper can effectively reduce the disturbance of input pressure on the sensor’s internal array and improve the output accuracy. The sensor can intuitively reflect the number of fingers sliding on the sensor by the order in which the maximum voltage appears. Due to the strong interference immunity capability and flexibility of the flexible sensor array mechanism, it has a broad application prospect in the practical fields of haptic simulation, perceptual function reconstruction, artificial intelligence, wearable devices and human–computer interaction.
Details
Keywords
Junyao Wang, Xingyu Chen, Huan Liu, Gongchen Sun, Yunpeng Li, Bowen Cui, Tianhong Lang, Rui Wang, Yiying Zhang and Maocheng Mao Sun
The purpose of this study is to provide a micro-nano chip automatic alignment system. Used for micron and nanometer channel alignment of microfluidic chip.
Abstract
Purpose
The purpose of this study is to provide a micro-nano chip automatic alignment system. Used for micron and nanometer channel alignment of microfluidic chip.
Design/methodology/approach
In this paper, combined with the reconstructed micro–nanoscale Hough transform theory, a “clamp–adsorb–rotate” chip alignment method is proposed. The designed alignment system includes a microscopic identification device, a clamping device and a suction device. After assembly, the straightness of the linear slide rail in the horizontal and vertical directions was tested, respectively. The results show that in the horizontal and vertical directions, the linearity error of the linear slide is +0.29 and 0.30 µm, respectively, which meets the requirement of chip alignment accuracy of 15 µm. In the direction of rotation, the angular error between the microchannel and the nanochannel is ±0.5°. In addition, an alignment flow experiment of the chip is designed. The results demonstrate that the closer the angle between the microchannel and the nanochannel is to 90°, the fluid fills the entire channel. Compared with the conventional method, the method and the assembly system realize fully automatic double-layer chip alignment.
Findings
A mechanical device designed by Hough transform theory can realize microfluidic chip alignment at nanometer and micron level.
Originality/value
The automatic alignment device adopts Hough transform principle and can be used for microfluidic chip alignment.
Details
Keywords
Chuanbao Nie, Bowen Fu and Qiang Gao
This paper aims to develop an efficient numerical method for nonlinear transient heat conduction problems with local radiation boundary conditions and nonlinear heat sources.
Abstract
Purpose
This paper aims to develop an efficient numerical method for nonlinear transient heat conduction problems with local radiation boundary conditions and nonlinear heat sources.
Design/methodology/approach
Based on the physical characteristic of the transient heat conduction and the distribution characteristic of the Green’s function, a quasi-superposition principle is presented for the transient heat conduction problems with local nonlinearities. Then, an efficient method is developed, which indicates that the solution of the original nonlinear problem can be derived by solving some nonlinear problems with small structures and a linear problem with the original structure. These problems are independent of each other and can be solved simultaneously by the parallel computing technique.
Findings
Within a small time step, the nonlinear thermal loads can only induce significant temperature responses of the regions near the positions of the nonlinear thermal loads, whereas the temperature responses of the remaining regions are very close to zero. According to the above physical characteristic, the original nonlinear problem can be transformed into some nonlinear problems with small structures and a linear problem with the original structure.
Originality/value
An efficient and accurate numerical method is presented for transient heat conduction problems with local nonlinearities, and some numerical examples demonstrate the high efficiency and accuracy of the proposed method.
Details
Keywords
Hongquan Chen, Saixing Zeng, Chongfeng Wu and Haiping Fu
The authors develop a theoretical framework of how foreign competition in a firm's home country jointly interacts with other environmental factors to influence the…
Abstract
Purpose
The authors develop a theoretical framework of how foreign competition in a firm's home country jointly interacts with other environmental factors to influence the internationalization pace. This study moves beyond the debate on whether foreign competition promotes or inhibits the internationalization pace by unpacking the nature of pace across strategic and operational dimensions. By differentiating the internationalization paces of market scope and international commitment, the study results show that foreign competition has a positive effect on the former and a negative effect on the latter. This indicates that the determinants of different paces are conditional upon the different knowledge types among foreign competitors.
Design/methodology/approach
Using a panel data set of Chinese construction corporations over the period from 2009 to 2015, the authors extend previous research on the effect of home country environment on internationalization behavior in an emerging economy by examining the effects of the interplay between foreign competition in home country and industrial contexts. The authors also explore the moderating effect of subnational institutions on the relationship between foreign competition and internationalization pace. They use a Poisson model and a GEE model to examine the main effects and moderating effects involved.
Findings
The results indicate that industry dynamism strengthens the positive effect of foreign competition and the pace of market scope, while industry munificence weakens the negative effect of foreign competition and the pace of international commitment. The authors’ findings support the coexistence of “pushing” and “pulling” effects of environmental factors from a firm's home country. The authors extend the argument of “institutional escapism” by focusing on subnational institutions. They show that firms located in a region with a low level of marketization are more likely to respond by accelerating the pace of their international expansion to escape from their home country.
Originality/value
The authors’ findings have implications for practitioners and policymakers working with emerging market firms (EMFs). The authors suggest that local governments should consider building high-quality institutions that can reduce the possibility of investment opportunities escaping EMFs. The authors’ findings indicate that international knowledge from foreign competitors may also assist EMFs in understanding more about the cultural environment before entering host countries, although it cannot help them to resolve cultural uncertainty when operating in host countries. Hence, managers should carefully evaluate their competitiveness before they decide to engage in global competition at an accelerated rate.
Details
Keywords
Qing‐Sheng Yang, Cai‐Qin Cui and Xu‐Zhi Lu
The advanced synthetic and natural materials, such as piezoelectric ceramics, electroactive polymers and biological soft tissues, exhibit the multi‐physical or physicochemical…
Abstract
The advanced synthetic and natural materials, such as piezoelectric ceramics, electroactive polymers and biological soft tissues, exhibit the multi‐physical or physicochemical coupling behaviors. The coupling behavior involves the thermal‐mechanical, electric‐mechanical and electrochemicalmechanical interactions. The coupling phenomena can be modeled in the microscopic and macroscopic levels. In the microscale, the material consists of the solid, fluid and ions. The domain FE technique can be used to model the deformation of the solid and the flow of the fluid. In the macroscale, the mixture theory can be applied to description of the coupled response of the continuum under coupled thermal, electrical, chemical and mechanical loadings. A weak form of the governing equations is established by means of variational principle and a multi‐field finite element (MFE) method is developed for numerical modeling of the coupling behavior of advanced materials.
Details
Keywords
Bowen Zheng, Yarou Wang, Muhammad Abdul Kamal and Assad Ullah
Culture and institutions are among the essential sources of comparative advantage in international trade and may influence a country's FDI influx. This paper aims to analyze the…
Abstract
Purpose
Culture and institutions are among the essential sources of comparative advantage in international trade and may influence a country's FDI influx. This paper aims to analyze the impact of cultural distance (CD) and institutional distance (ID) on the efficiency of China's outward foreign direct investment (OFDI) for the panel of 43 countries during 2003–2016.
Design/methodology/approach
The stochastic frontier approach (SFA) has been incorporated into the standard gravity model of gravity Kalirajan, 1999; Ravishankar and Stack, 2014). SFA has traditionally been implemented to evaluate the production frontier as the highest yield that could possibly be generated from specified input levels. The production process is viewed to be fully efficient if the real output is performed at frontier level. Otherwise, the production process is assumed technically inefficient, which implies potential scope for enhanced output. This error term is split into two parts, a non-negative term and more standard asymmetrical term. The former identifies inefficiencies in production, while the latter retrieves random disorders
Findings
The outcomes assert a U-shaped relationship between CD and the efficiency of China's OFDI. Put differently, when the CD is minimal, the “liability of foreignness” (LOF) effect plays a dominant role; and CD tends to reduce the efficiency of China's OFDI. On the flip side, when the culture distance is greater than a certain threshold level, the “advantages of foreignness” (AOF) effect plays a predominant role, and CD improves the efficiency of China's OFDI. Institutional distance results in the “LOF” effect significantly reduce the efficiency of China's OFDI.
Research limitations/implications
Notwithstanding these contributions, our study has some limitations which offer directions for future research. The major limitation of this research work is the availability of comprehensive data for a well extended time, in particular for the variable of CD. Further, a firm-level study can shed light on the motivations and performance of China OFDI. Finally, given that our analysis focuses on emerging market multinational enterprises (EMNEs) from China, the findings might not be explicitly generalizable to MNEs from other developing countries. Future studies should concentrate on the comparative study of China's OFDI with other developing countries, to deepen our understanding of the effects of ID and CD on the efficiency of OFDI.
Originality/value
(1) The work is novel in nature as the authors attempt to explore the effect of ID and CD on efficiency of Chinese FDI. To the best of the authors’ knowledge, no research is conducted in this direction in terms of Chinese FDI. (2) Further, the prior studies employed standard gravity model, which may not correctly evaluate the trade potential viewed as the highest potential value. To overcome the shortcomings of the standard gravity model in estimation of the trade performance and efficiency, the SFA has been incorporated into the standard gravity model of gravity.
Details
Keywords
Juan Liu, Wei Wei, Meiying Zhong, Yaqi Cui, Shuang Yang and Haiyan Li
This study aimed to bibliometrically and visually analyze and review hospitality and tourism marketing studies published from 2000–2020.
Abstract
Purpose
This study aimed to bibliometrically and visually analyze and review hospitality and tourism marketing studies published from 2000–2020.
Design/methodology/approach
A total of 3,942 articles collected from the databases of Social Science Citation Index (SSCI) and Science Citation Index Expanded (SCI-E) in the Web of Science (WoS) along with their references were used for analyses. The bibliometric software HistCiteTM and literature measurement visualization tools, VOSviewer and CiteSpace, were employed to analyze the selected articles.
Findings
The results of the study demonstrated top influential scholars and institutions, intellectual structure and emerging trends of the study topics, and future research opportunities in the field of hospitality and tourism marketing.
Research limitations/implications
First, academic influence of a scholar was evaluated by citations of his/her publications, which did not take the order of authorship into consideration. Second, this study was restricted to the English language journals. Third, other types of published documents related to the studied field such as review papers were not considered by this research.
Originality/value
In comparison to traditional qualitative analysis such as content analysis, bibliometric analysis is a more objective approach to vividly demonstrate trends and performance of a research field, offers unique insights for its advancement with wider inclusiveness of a larger amount of data.
Details
Keywords
Ashish Rastogi and Harish Kumar Singla
The purpose of this study is to examine the effect of job, organizational and personal factors on exhaustion (EXH) in early career construction professionals in India.
Abstract
Purpose
The purpose of this study is to examine the effect of job, organizational and personal factors on exhaustion (EXH) in early career construction professionals in India.
Design/methodology/approach
A survey questionnaire was developed and circulated among early career construction professionals in India. The responses on job, organizational and personal demands (role ambiguity, stakeholder management and work-family conflict respectively) and job, organizational and personal resources (job autonomy (JA), perceived organizational support and emotional intelligence respectively) were sought using standard measures. The valid data (N = 187) thus collected, was analysed using structural equation modelling (SEM).
Findings
The study finds that in terms of demands, stakeholder management and work family conflict have a significant positive effect on EXH. In other words, EXH level increases with the increase in these two. With respect to resources, JA has a negative effect on EXH. This implies that as JA increases, the EXH level goes down.
Originality/value
This study is the first to examine factors causing EXH in early career construction professionals in India. This study is significant on two counts. First, it proposes a comprehensive theoretical model based in job demands-resources (JD-R) theory customized for construction sector. Second, the empirical examination is situated in the Indian context, which remains underexplored despite its economic and demographic significance.
Details
Keywords
Joyce de Andrade Ruiz, Ariovaldo Denis Granja and Doris C.C.K. Kowaltowski
Challenges in social housing projects (SHP) in Brazil are mainly related to design and construction quality and cost constraints. Value delivery to end-users must be a goal…
Abstract
Purpose
Challenges in social housing projects (SHP) in Brazil are mainly related to design and construction quality and cost constraints. Value delivery to end-users must be a goal, however, jointly considered with the restrictions of such developments. In the SHP context, tight cost constraints frequently have a negative impact on delivering value to end-users. The purpose of this paper is to put forward the proposition that value enhancement can be achieved by reallocating costs to better meet the attributes most valued by end-users, without increasing initial project costs.
Design/methodology/approach
A set of tools used in value methodology (VM) is adopted to assist a systematic process with the goal of attaining an optimal functional balance between costs and value delivery to end-users. Desired values were indicated by users in a previous study, resulting in an Index of General Significance. A single case study was carried out to test the approach in a SHP. Opportunities for improvement guided by the desired values of end-users were evaluated.
Findings
The VM approach suggests that initial project cost constraints do not necessarily induce value loss for end-users, a recurrent problem that designers and stakeholders frequently face in such contexts. Improvements were made possible through simple cost reallocation.
Research limitations/implications
A single case study was carried out to validate this approach. To create a generalized approach for other similar context further tests should be undertaken.
Practical implications
The proposed VM approach was shown to be efficient in assessing decisions which designers and stakeholders must take, bearing in mind cost constraints and improvements in value delivery to end-users.
Social implications
Currently in Brazil, end-users’ perceptions are rarely considered into the design process of SHP. The research shows that the proposed approach could be used in similar contexts of social housing to enrich the design process and attain higher satisfaction levels.
Originality/value
An important lesson learned was that subjective parameters based on the desired values of end-users could be combined with technical and functional analysis, thus an objective improvement process was devised. The approach can have clear implications for the product development of SHPs to best match the end-user's value propositions, without neglecting financial and economic needs in such a context.
Details
Keywords
Joan Carlini, Rachel Muir, Annette McLaren-Kennedy and Laurie Grealish
The increasing financial burden and complexity of health-care services, exacerbated by factors such as an ageing population and the rise of chronic conditions, necessitate…
Abstract
Purpose
The increasing financial burden and complexity of health-care services, exacerbated by factors such as an ageing population and the rise of chronic conditions, necessitate comprehensive and integrated care approaches. While co-created service design has proven valuable in transforming some service industries, its application to the health-care industry is not well understood. This study aims to examine how health consumers are involved in health-care service co-creation.
Design/methodology/approach
The study searched 11 electronic databases for peer-reviewed articles published between 2010 and 2019. Additionally, hand searches of reference lists from included studies, Google© citation searches and searches for grey literature were conducted. The Whittemore and Knafl integrative framework guided the systematic review, and Callahan’s 6 Ws framework was used to extract data from the included articles, facilitating comparisons.
Findings
The authors identified 21 articles, mainly from the UK, North America and Australia. Despite the need for more research, findings reveal limited and geographically narrow empirical studies with restricted theory and method applications. From these findings, the authors constructed a conceptual model to enhance nuanced understanding.
Originality/value
This study offers four contributions. First, it introduces the Health Service Design Transformation Model for Comprehensive Consumer Co-Creation, illustrating health consumers’ multifaceted roles in shaping services. Second, consumer vulnerabilities in co-creating services are identified, linked to diverse consumer groups, power dynamics and decision complexity. Third, this study suggests broadening participant inclusion may enhance consumer-centricity, inclusivity and innovation in service design. Finally, the research agenda explores consumer experiences, organizational dynamics, value outcomes and co-creation theory for health-care service advancement.
Details