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1 – 10 of 15The aim of this paper is to explore the way in which e‐research is changing the nature between researchers and libraries, and to suggest how librarians can become more engaged…
Abstract
Purpose
The aim of this paper is to explore the way in which e‐research is changing the nature between researchers and libraries, and to suggest how librarians can become more engaged with professional research under an e‐research environment.
Design/methodology/approach
This paper takes the example of research into ultrasonic motors to investigate what can be done in current library facilities with regard to collecting and sharing data, and what should be provided in future libraries to facilitate the research of ultrasonic motors under an e‐research environment.
Findings
Current libraries can facilitate professional research through retrieval of digital resources such as diverse databases, in which researchers can get information on trends, hot topics, and the main problems in order to conduct further investigations. To completely realize e‐research of professional researches, it is suggested that more extended services such as infrastructures of remote laboratories and virtual research environments are needed in future libraries to facilitate the collaboration of different research groups in different places.
Originality/value
The paper provides methods for professional research into specific topics (such as ultrasonic motors in the present case) under the e‐research environment, with a particular focus on collaboration in a universal infrastructure for sharing computing power and data storage, as well as data and research. The result of this study should also be helpful in shaping future libraries.
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Lin Chen, Ruiyang Niu, Yajie Yang, Longfeng Zhao, Guanghua Xie and Inayat Khan
This paper examines the effect of managerial interlocking networks (MINs) on firm risk spillover by using a sample of Chinese A-share listed firms.
Abstract
Purpose
This paper examines the effect of managerial interlocking networks (MINs) on firm risk spillover by using a sample of Chinese A-share listed firms.
Design/methodology/approach
Applying the complex network approach, we build managerial interlocking networks (MINs) and leverage degree centrality to quantify a manager’s network position. To gauge firm risk spillover, we utilize the conditional autoregressive value at risk (CAViaR) model to compute the value-at-risk. Subsequently, we employ ordinary least squares to investigate the influence of MINs on firm risk spillover.
Findings
Our research uncovers a direct correlation between a firm risk spillover and the status of network positions within managerial interlocking networks; namely, the more central the position, the greater the risk spillover. This increase is believed to be due to central firms in MINs having greater connectedness and influence. This fosters a similarity in decision-making across different firms through interfirm managerial communication, thus amplifying the risk spillover. Economic policy uncertainty (EPU) and Guanxi culture furtherly intensify the effects of MINs. Additional analysis reveals that the impact of MINs on the firm risk spillover is significantly noticeable in non-state-owned enterprises, while good corporate governance diminishes the risk spillover prompted by MINs.
Originality/value
Our findings offer fresh insights into the interfirm risk outcome associated with MINs and extend practical guidelines for attenuating firm risk spillover with a view toward mitigating systemic risk.
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Hongbo Liu, Suying Gao, Hui Xing, Long Xu, Yajie Wang and Qi Yu
The purpose of this study is to investigate the mechanism of shared leadership on team members’ innovative behavior.
Abstract
Purpose
The purpose of this study is to investigate the mechanism of shared leadership on team members’ innovative behavior.
Design/methodology/approach
Paired questionnaires were collected from 89 scientific research teams in the Beijing-Tianjin-Hebei region of China at two-time points with a time lag of 4 months. Then multilevel structural equation model method was applied to analyze the multiple mediating effects.
Findings
This study finds that: the form of shared leadership in scientific research teams of universities; shared leadership has a positive impact on team members’ innovative behavior; there are multiple mediations in the relationship including synchronization and sequence of creative self-efficacy and achievement motivation.
Originality/value
According to the “stimulus-organism-response” model, this paper has constructed a multi-level theoretical model that shared leadership influences individual innovation behavior and reveals the “black box” from the perspective of psychological mechanism. It not only verifies that “can-do” shapes “willing to do” but also makes up for the gap of an empirical test of the effectiveness of shared leadership in scientific research teams of universities. Besides, the formal scale of shared leadership in the Chinese situation is revised, which can provide a reference for future empirical research on shared leadership. The research conclusions provide new ideas for improving the management of scientific research teams in universities.
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Abstract
Purpose
It would take billions of miles’ field road testing to demonstrate that the safety of automated vehicle is statistically significantly higher than the safety of human driving because that the accident of vehicle is rare event.
Design/methodology/approach
This paper proposes an accelerated testing method for automated vehicles safety evaluation based on improved importance sampling (IS) techniques. Taking the typical cut-in scenario as example, the proposed method extracts the critical variables of the scenario. Then, the distributions of critical variables are statistically fitted. The genetic algorithm is used to calculate the optimal IS parameters by solving an optimization problem. Considering the error of distribution fitting, the result is modified so that it can accurately reveal the safety benefits of automated vehicles in the real world.
Findings
Based on the naturalistic driving data in Shanghai, the proposed method is validated by simulation. The result shows that compared with the existing methods, the proposed method improves the test efficiency by 35 per cent, and the accuracy of accelerated test result is increased by 23 per cent.
Originality/value
This paper has three contributions. First, the genetic algorithm is used to calculate IS parameters, which improves the efficiency of test. Second, the result of test is modified by the error correction parameter, which improves the accuracy of test result. Third, typical high-risk cut-in scenarios in China are analyzed, and the proposed method is validated by simulation.
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The purpose of this paper is to examine the effect of workplace ostracism on unethical pro-organizational behavior (UPB), by focusing on the moderating role of value alignment of…
Abstract
Purpose
The purpose of this paper is to examine the effect of workplace ostracism on unethical pro-organizational behavior (UPB), by focusing on the moderating role of value alignment of WPS.
Design/methodology/approach
The theoretical model was tested using data collected from 434 employees in different companies from Shanxi provinces in China. Analysis of lagged data is used to empirically test the relationship between workplace ostracism and UPB.
Findings
The study found that ostracized individuals are more likely to engage in UPB when they embrace high value alignment with the organization.
Originality/value
This study examines the moderating effect of WPS, providing boundary condition for the relationship between workplace ostracism and UPB. So far, most of the empirical work has identified moderators that only buffer the relationship between ostracism and negative outcomes, and the result for moderators that actually determine pro-social responses has not yet to be discovered.
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Yonghong Hao, Yajie Wang, Jiaojuan Zhao and Huamin Li
The purpose of this paper is to introduce the concept of time lag to grey system models, and propose the grey system models with time lags.
Abstract
Purpose
The purpose of this paper is to introduce the concept of time lag to grey system models, and propose the grey system models with time lags.
Design/methodology/approach
The models were applied to calculate the time lags between spring flow and precipitation (i.e. hydraulic response time) and simulate karst spring discharge in Liulin Springs Basin, China.
Findings
The results show that the time lags of Lishi, Zhongyang, and Fangshan are three, five, and eight, respectively. By considering the time lags, we set up the grey system GM(1,4) response model of Liulin Springs discharge to precipitation of Lishi, Zhongyang, and Fangshan.
Originality/value
The results are in agreement with regional geological structure and provide a better understanding of karst hydrological processes of Liulin Springs Basin.
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Xiao Fang, Yajie Zeng, Feng Xiong, Jiang Chen and Fei Cheng
Seepage of the dam is an important safety problem, which may cause internal erosion of the structure. In the field of seepage monitoring in civil engineering, the distributed…
Abstract
Purpose
Seepage of the dam is an important safety problem, which may cause internal erosion of the structure. In the field of seepage monitoring in civil engineering, the distributed optical fiber sensing technology based on the temperature tracing method has been paid more attention due to its unique advantages of high sensitivity, good stability and high resolution. The purpose of this paper is to make a review of the existing related research, so as to facilitate the later scholars to understand and further study more systematically.
Design/methodology/approach
In this paper, three kinds of commonly used distributed fiber temperature measurement technologies are introduced. Based on the working principle, monitoring system, theoretical analysis, experimental research and engineering application of the fiber seepage monitoring technology, the present situation of dam seepage monitoring based on distributed fiber is reviewed in detail and their advantages and disadvantages are compared.
Findings
The thermal monitoring technology of seepage measurement depends on the accuracy of optical fiber temperature measurement (including the accuracy of the system and the rationality of the discrimination method), the correct installation of optical fiber and the quantitative analysis of temperature data. The accuracy of the current monitoring system can basically meet the existing measurement requirements, but the correct installation of optical fiber and the calibration of temperature data need to be further studied for different discrimination methods, and this field has great research value.
Originality/value
At present, there are many applications and research studies of optical fiber sensing in the field of structural health monitoring, and there are also reviews of related aspects. However, there is little or no review only in the field of seepage monitoring. This paper summarizes the research and application of optical fiber sensing in the field of seepage monitoring. The possibility of the gradient method to find its new prospect with the development of monitoring systems and the improvement of temperature resolution is discussed. The idea of extending the seepage monitoring method based on distributed optical fiber thermal monitoring technology to other monitoring fields is also given in the paper.
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Wang Yajie, Wendong Zhang, Jiangong Cui, Xiaoxia Chu, Guojun Zhang, Renxin Wang, Haoming Huang and Xiaoping Zhai
In acoustic detection technology, optical microcavities offer higher detection bandwidth and sensitivity than traditional acoustic sensors. However, research on acoustic detection…
Abstract
Purpose
In acoustic detection technology, optical microcavities offer higher detection bandwidth and sensitivity than traditional acoustic sensors. However, research on acoustic detection technologies involving optical microcavities has not yet been reported. Therefore, this paper aims to design and construct an underwater acoustic detection system based on optical microcavities and study its acoustic detection technology to improve its performance.
Design/methodology/approach
Based on the principles of optical microcavity acoustic sensors, a signal-detection circuit was designed to form a detection system in conjunction with a laser, an optical waveguide resonator and an oscilloscope. This circuit consists of two modules: a photodetection module and a filter amplification module.
Findings
The photodetection module features a baseline noise of −106.499 dBm and can detect device spectral line depths of up to 2410 mV. The gain stability of the filter amplification module was 58 dB ± 1 dB with a noise gain of −107.626 dBm. This design allows the acoustic detection system to detect signals with high sensitivity within the 10 Hz−1.2 MHz frequency band, achieving a maximum sensitivity of −126 dB re 1 V/µPa at 800 Hz and a minimum detectable pressure (MDP) of 0.37 mPa/Hz1/2, corresponding to a noise equivalent pressure (NEP) of 51.36 dB re 1 V/µPa.
Originality/value
This study designs and constructs a broadband underwater acoustic detection system specifically for optical waveguide resonators based on the sensing principles of silicon dioxide optical waveguide resonators. Experiments demonstrated that the signal detection module improves the sensitivity of underwater acoustic detection based on optical waveguides.
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Extensive macro- and micro-economics research has been conducted on China's tax reform, which replaced business tax with value-added tax (VAT). However, existing studies have not…
Abstract
Purpose
Extensive macro- and micro-economics research has been conducted on China's tax reform, which replaced business tax with value-added tax (VAT). However, existing studies have not clarified the reform's impact on firm-level investment decisions. Hence, this study explored the effect of replacing business tax with VAT on firms' investment efficiency.
Design/methodology/approach
The study used 2010–2018 data from China's A-share listed companies and a difference-in-differences (DID) model to explore the effect of the reform on firm-level investment decisions.
Findings
The authors found that China's tax reform has improved investment efficiency in underinvested firms, increased liquidity and decreased the level of reliance on external financing. The tax reform had a greater effect on investment efficiency in firms with lower liquidity and higher external financing reliance. Its effect was also more significant among non-state-owned and small companies.
Originality/value
This study fills the aforementioned research gap by exploring the effects of China's tax reform, thus providing a theoretical reference and a basis for policymaking.
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