Search results

1 – 10 of 107
Article
Publication date: 10 November 2020

Xiujuan Chen, Zhiqiang Zhang and Jinjing Guo

The purpose of this paper is to provide theoretical basis and data support for researchers to choose appropriate international partners, provide a basis for Chinese…

Abstract

Purpose

The purpose of this paper is to provide theoretical basis and data support for researchers to choose appropriate international partners, provide a basis for Chinese research funding agencies, such as National Natural Science Foundation of China (NSFC) to formulate international research collaboration (IRC) strategies and policies and provide recommendations for the improvement of the internationalization level of China's basic scientific research.

Design/methodology/approach

Based on existing research, this study took output of “Major International (Regional) Joint Research Project” (MIJRP) funded by NSFC and participated by Chinese scholars in the meantime as the analysis object, proposed hypotheses and constructed the indicators of IRC and research output (RO). In addition, the mathematical statistics was used to compare the RO of China's IRC and nonIRC, and the statistical analysis model was used to measure the influence on RO of collaboration country's research capacity, research collaboration between China and US, scope of international research collaboration and reprint author country.

Findings

The RO of China's IRC is higher than that of nonIRC; research capacity of collaboration country has no inevitable effect on the RO of China's IRC; the RO of China's IRC participated by Americans is higher than that without American scholars; expanding the scope of China's IRC to some degree can increase RO; the RO of China's IRC led by foreigners is higher than that led by Chinese. In particular, China–US IRC and foreign scholars acting as the reprint author are two major factors for the RO of China's IRC.

Originality/value

Most of the traditional research on IRC are based on the co-author papers, and this study tried to analyze the characteristics and regularities on IRC from a new view of international collaboration projects, which can be a supplement to the traditional international collaboration research on co-author papers.

Article
Publication date: 17 October 2022

Xinmin Tian, Zhiqiang Zhang, Cheng Zhang and Mingyu Gao

Considering the role of analysts in disseminating information, the paper explains the idiosyncratic volatility puzzle of China's stock market. As the largest developing…

Abstract

Purpose

Considering the role of analysts in disseminating information, the paper explains the idiosyncratic volatility puzzle of China's stock market. As the largest developing country, China's research can provide meaningful reference for the research of financial markets in other new countries.

Design/methodology/approach

From the perspective of behavior, establishing a direct link between individual investor attention and stock price overvaluation.

Findings

The authors find that there is a significant idiosyncratic volatility puzzle in China's stock market. Due to the role of mispricing, individual investor attention significantly enhances the idiosyncratic volatility effect, that is, as individual investor attention increases, the greater the idiosyncratic volatility, the lower the expected return. Attention can explain the idiosyncratic volatility puzzle in China's stock market. In addition, due to the role of information production and dissemination, securities analysts can reduce the degree of market information asymmetry and enhance the transparency of market information.

Originality/value

China is the second largest economy in the world, and few scholars analyze it from the perspective of investors' attention. The authors believe this paper has the potential in contributing to the academia.

Details

International Journal of Emerging Markets, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1746-8809

Keywords

Article
Publication date: 1 July 2020

Wenchao Duan, Siqi Yin, Wenhong Liu, Jian Yang, Qingfeng Zhu, Lei Bao, Ping Wang, Jianzhong Cui and Zhiqiang Zhang

The purpose of this paper is to investigate the effect of pulsed magnetic field (PMF) with different duty cycles on the melt flow and heat transfer behaviors during…

Abstract

Purpose

The purpose of this paper is to investigate the effect of pulsed magnetic field (PMF) with different duty cycles on the melt flow and heat transfer behaviors during direct-chill (DC) casting of large-size magnesium alloy billet and find the appropriate range of duty cycle.

Design/methodology/approach

A transient two-dimensional mathematical model coupled electromagnetic field, flow field and thermal field, is conducted to study the melt flow and temperature field under PMF and compared with that under the harmonic magnetic field.

Findings

The results reveal that melt vibration and fluctuation are generated due to the instantaneous impact of repeated thrust and pull effects of Lorentz force under PMF. The peak of Lorentz force decreases greatly with the increasing duty cycle, but the melt fluctuation region is expanded with higher duty cycle, which accelerates the interior melt velocity and reduces the temperature gradient at the liquid-solid interface. However, PMF with overly high duty cycle has adverse effect on the melt convection and limited influence on the interior melt. A duty cycle of 20% to 50% is a reasonable range.

Practical implications

This paper can provide guiding significance for the setting of duty cycle parameters on DC casting under PMF.

Originality/value

There are few reports on the effect of PMF parameters during DC casting with applying PMF, especially for duty cycle, a parameter unique to PMF. The findings will be helpful for applying the external field of PMF on DC casting.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 31 no. 3
Type: Research Article
ISSN: 0961-5539

Keywords

Open Access
Article
Publication date: 15 November 2022

Zhiqiang Zhang, Xingyu Zhu and Ronghua Wei

Large displacement misalignment under the action of active faults can cause complex three-dimensional deformation in subway tunnels, resulting in severe damage, distortion…

Abstract

Purpose

Large displacement misalignment under the action of active faults can cause complex three-dimensional deformation in subway tunnels, resulting in severe damage, distortion and misalignment. There is no developed system of fortification and related codes to follow. There are scientific problems and technical challenges in this field that have never been encountered in past research and practices.

Design/methodology/approach

This paper adopted a self-designed large-scale active fault dislocation simulation loading system to conduct a similar model test of the tunnel under active fault dislocation based on the open-cut tunnel project of the Urumqi Rail Transit Line 2, which passes through the Jiujiawan normal fault. The test simulated the subway tunnel passing through the normal fault, which is inclined at 60°. This research compared and analyzed the differences in mechanical behavior between two types of lining section: the open-cut double-line box tunnel and the modified double-line box arch tunnel. The structural response and failure characteristics of the open-cut segmented lining of the tunnel under the stick-slip part of the normal fault were studied.

Findings

The results indicated that the double-line box arch tunnel improved the shear and longitudinal bending performance. Longitudinal cracks were mainly distributed in the baseplate, wall foot and arch foot, and the crack position was basically consistent with the longitudinal distribution of surrounding rock pressure. This indicated that the longitudinal cracks were due to the large local load of the cross-section of the structure, leading to an excessive local bending moment of the structure, which resulted in large eccentric failure of the lining and formation of longitudinal cracks. Compared with the ordinary box section tunnel, the improved double-line box arch tunnel significantly reduced the destroyed and damage areas of the hanging wall and footwall. The damage area and crack length were reduced by 39 and 59.3%, respectively. This indicates that the improved double-line box arch tunnel had good anti-sliding performance.

Originality/value

This paper adopted a self-designed large-scale active fault dislocation simulation loading system to conduct a similar model test of the tunnel under active fault dislocation. This system increased the similarity ratio of the test model, improved the dislocation loading rate and optimized the simulation scheme of the segmented flexible lining and other key factors affecting the test. It is of great scientific significance and engineering value to investigate the structure of subway tunnels under active fault misalignment, to study its force characteristics and damage modes, and to provide a technical reserve for the design and construction of subway tunnels through active faults.

Details

Railway Sciences, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2755-0907

Keywords

Article
Publication date: 25 February 2022

Asad Ullah Khan, Muhammad Rafi, Zhiqiang Zhang and Asad Khan

Dynamic technologies have revolutionized human socio-economic activities, including health care, higher education, business and improved customer service in academic…

Abstract

Purpose

Dynamic technologies have revolutionized human socio-economic activities, including health care, higher education, business and improved customer service in academic sectors. Leveraging the latest technology leads to high productivity, confidence, improved management skills, satisfactory performance and innovative academic services. In the era of technocentrism, the purpose of this paper is to find out whether useful technologies and competent user managers support users in the use of resources, increasing research productivity and improving academic library services.

Design/methodology/approach

This study is based on primary data collected from students at universities in the provincial capital using a printed research questionnaire. The authors followed the Likert scale for instrument development and contacted service professionals prior to distribution to test the applicability. Based on the technology acceptance model, this study established a conceptual model with multiple associated hypotheses to test the suitability of the research model. The data were analyzed using structural equation modeling software for path analysis and model development.

Findings

The results of this study show that technological advances greatly accelerate the use of library resources, strengthen management skills, improve user performance and ultimately enhance academic performance and services. In addition to deploying and leveraging technology, expert leadership has also had a positive impact on improving user productivity and maintaining proactive academic library services.

Practical implications

The TAM-based theoretical model will prove to be a useful tool in the future for delivering technology, improving management skills, promoting the use of library resources, increasing user productivity and providing advanced library services.

Originality/value

Based on primary data collected from Khyber Pakhtunkhwa degree students, this study provides an insight into the actual state of technology used to improve academic performance for the first time. In addition, the study also explores executive collaboration to improve employee and user efficiency and service reform in academic libraries.

Details

Global Knowledge, Memory and Communication, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2514-9342

Keywords

Article
Publication date: 7 December 2021

Asad Ullah Khan, Zhiqiang Zhang, Milad Taleby Ahvanooey and Wajid Rafique

Blockchain technology is a distributed and decentralized public digital ledger, which is employed to save dynamic transaction data and static records across several…

Abstract

Purpose

Blockchain technology is a distributed and decentralized public digital ledger, which is employed to save dynamic transaction data and static records across several computers so that each record could not be modified retroactively without the collusion of the network and alteration of all subsequent blocks. Recently, it has become immensely popular in digital resource sharing in different research areas such as healthcare, smart cities, cryptocurrency and libraries. Since the current eLibrary systems are vulnerable to issues such as unauthorized access, plagiarism, etc., there is a lack of access control system that can efficiently address these issues.

Design/methodology/approach

The authors designed a conceptual model for evaluating the users' intention in the use of blockchain-based digital libraries, which can facilitate the resource organization and provide additional security to interactive processes between users. To conduct our survey, the authors devised and shared two versions, English and Chinese, among 298 participants. Moreover, 7 PhD students participated in the pre-testing of the questioner design. The authors analyzed the demographic data using the Jamovi software and SmartPLS in order to generate the path modeling.

Findings

This study revealed that blockchain technology adaption in eLibraries is essential for enhancing the quality of services, infrastructure and resources for libraries. The study’s results show that optimism, informativeness, perceived usefulness, perceived ease of use, attitude and intention to use blockchain technology for accessing digital resources in libraries.

Originality/value

This study contributes to the adoption of blockchain technology in the digital library. To the best of the authors’ knowledge, this work is the first empirical attempt to provide a new perspective of developing digital libraries based on security policies. This model shows the underpinning knowledge to manage digital resources, which can facilitate the design phases and enhance the management costs in eLibraries.

Details

Aslib Journal of Information Management, vol. 74 no. 1
Type: Research Article
ISSN: 2050-3806

Keywords

Article
Publication date: 18 October 2021

Asad Ullah Khan, Zhiqiang Zhang, Sohail Raza Chohan and Wajid Rafique

In the modern era, libraries confront significant service challenges. Some challenges are linked to information resource management which includes direct availability of…

Abstract

Purpose

In the modern era, libraries confront significant service challenges. Some challenges are linked to information resource management which includes direct availability of information for immediate decision making. The Internet of Things (IoT) is a recent technological shift that library personnel should be aware of because it has the potential to enhance information resource management. The purpose of the research is to highlight the willingness to adopt IoT technology in libraries.

Design/methodology/approach

This study uses a quantitative research design in which a survey of public sector universities in Nanjing, China, is conducted to investigate the determinants of IoT adoption intention in libraries. A total of 389 responses were captured from experienced library personnel. The literature on technology adoption is then used to formulate quantitative theories. For data analysis, partial least squares structural equation modeling using SmartPLS.

Findings

The research highlights the various success factors which support the IoT service adoption process. It is concluded that IoT augmented services in academic libraries must be supported through robust management practices and effective utilization of technological resources. Many libraries have made substantial modifications to their structure in terms of technology and design to satisfy the demands of patrons.

Originality/value

This is an empirical paper that looks at IoT adoption intention in libraries using a quantitative approach through surveying library personnel. The library personnel can aid in the understanding of the motivations behind technology adoption in libraries, particularly of IoT services that may bring about advances in the libraries' capability to provide information access services.

Details

Library Hi Tech, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0737-8831

Keywords

Article
Publication date: 7 September 2021

Ming Huang, Zhiqiang Zhang, Peizi Wei, Fei Liu and Youliang Ding

In order to make sure of the safety of a long-span suspension bridge under earthquake action, this paper aims to study the traveling wave effect of the bridge under…

91

Abstract

Purpose

In order to make sure of the safety of a long-span suspension bridge under earthquake action, this paper aims to study the traveling wave effect of the bridge under multi-support excitation and optimize the semi-active control schemes based on magneto-rheological (MR) dampers considering reference index as well as economical efficiency.

Design/methodology/approach

The finite element model of the long-span suspension bridge is established in MATLAB and ANSYS software, which includes different input currents and semi-active control conditions. Six apparent wave velocities are used to conduct non-linear time history analysis in order to consider the seismic response influence in primary members under traveling wave effect. The parameters α and β, which are key parameters of classical linear optimal control algorithm, are optimized and analyzed taking into account five different combinations to obtain the optimal control scheme.

Findings

When the apparent wave velocity is relatively small, the influence on the structural response is oscillatory. Along with the increase of the apparent wave velocity, the structural response is gradually approaching the response under uniform excitation. Semi-active control strategy based on MR dampers not only restrains the top displacement of main towers and relative displacement between towers and girders, but also affects the control effect of internal forces. For classical linear optimal control algorithm, the values of two parameters (α and β) are 100 and 8 × 10–6 considering the optimal control effect and economical efficiency.

Originality/value

The emphasis of this study is the traveling wave effect of the triple-tower suspension bridge under multi-support excitation. Meanwhile, the optimized parameters of semi-active control schemes using MR dampers have been obtained, providing relevant references in improving the seismic performance of three-tower suspension bridge.

Details

International Journal of Structural Integrity, vol. 12 no. 5
Type: Research Article
ISSN: 1757-9864

Keywords

Article
Publication date: 6 February 2017

Shanshan Zhang, Zhiqiang Wang, Xiande Zhao and Min Zhang

The purpose of this paper is to empirically investigate the effects of institutional support on product and process innovation and firm performance and describe how…

Abstract

Purpose

The purpose of this paper is to empirically investigate the effects of institutional support on product and process innovation and firm performance and describe how dysfunctional competition influences relevant outcomes.

Design/methodology/approach

This study develops a research model based on institution-based view and tests it using structural equation modeling and empirical data collected from 300 manufacturers in China.

Findings

The results show that institutional support positively affects product and process innovation and firm performance. Both product and process innovation improve firm performance. The findings reveal that dysfunctional competition significantly reduces the positive effects of institutional support on product and process innovation but leaves the effects of institutional support and product and process innovation on firm performance unaffected.

Originality/value

This study contributes to innovation literature by providing insights into the impact of China’s institutional environment on manufacturing firms’ product and process innovation decisions. The findings also contribute to institution-based view literature by providing empirical evidence on the joint effects of institutional support and dysfunctional competition on product and process innovation and firm performance. This study can help manufacturers in China take advantage of institutional environment and adjust product and process innovation decisions accordingly.

Details

Industrial Management & Data Systems, vol. 117 no. 1
Type: Research Article
ISSN: 0263-5577

Keywords

Article
Publication date: 29 June 2022

Shanshan Zhang, Zhiqiang Wang, Xiande Zhao and Jinyu Yang

Drawing upon relative absorptive capacity (AC) perspective, this study proposes a research model connecting R&D investment, three types of supply chain AC—AC from…

Abstract

Purpose

Drawing upon relative absorptive capacity (AC) perspective, this study proposes a research model connecting R&D investment, three types of supply chain AC—AC from suppliers, customers and university and research institutes (U&RIs)—and firm innovativeness and investigates the contingent effects of dysfunctional competition on the link between R&D investment and supply chain AC.

Design/methodology/approach

The authors used data collected from 262 manufacturers in three areas of China to empirically examine the conceptual model. The corresponding hypotheses were tested with structural equation modeling and regression analysis.

Findings

The empirical results demonstrate that AC from customers and AC from U&RIs play significant mediating roles in the relationship between R&D investment and firm innovativeness. Moreover, R&D investment has a significantly greater effect on AC from U&RIs under high levels of dysfunctional competition.

Originality/value

First, by conceptualizing AC from a relative view, this study discloses the unique roles of knowledge from different supply chain partners in realizing the benefits of R&D investment in innovation. Second, the exploration of the contingent roles of dysfunctional competition in the emerging economy of China enriches insights on the roles of institutional environment on knowledge absorption and the knowledge on relative AC in emerging economies.

Details

International Journal of Operations & Production Management, vol. 42 no. 10
Type: Research Article
ISSN: 0144-3577

Keywords

1 – 10 of 107