There is widespread debate about the nationalistic top-down approach of citizenship education. By using the notion of cultural citizenship as a useful theoretical lens…
Abstract
Purpose
There is widespread debate about the nationalistic top-down approach of citizenship education. By using the notion of cultural citizenship as a useful theoretical lens, citizenship education research tends to focus on the process of subjectivity construction among students’ citizenship learning process. The Communist Party of China plays a dominant role in cultivating citizens in the form of ideological and political education (IaPE) in Chinese universities. The research problem thus focuses on the dynamics and complexity of how Chinese university students construct their subjectivities regarding citizenship learning through IaPE. The main purpose of the study is to provide some research directions for understanding students’ citizenship learning today.
Design/methodology/approach
With the case study of one university in China and interview data from 25 students, this paper examines the ways in which students understand and respond to dominant discourses.
Findings
The findings revealed there is a deficit of citizenship learning in IaPE, and students felt ideologically pressurized. This study suggests students’ complex subjectivities of active participants but confused minds as a phenomenon in Chinese higher education, in which they must involve in IaPE for personal academic and career development, while they adopted covert strategies for self-conscious citizenship learning expectations. These strategies took the form ranging from obediently completing basic curriculum requirements and distancing away by studying abroad, to actively searching for learning opportunities from other courses and media society.
Originality/value
This paper contributes to citizenship education research by recognizing the complexities of how subjectivities are formed in formal university settings.
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Wei Xiao, Enlong Liu, Xiao Yin, Guike Zhang, Chong Zhang and Qihao Yu
The purpose of this paper is to perform the thermo-hydro-mechanical (THM) numerical analysis in order to study the thawing process for frozen soil and to predict the thawing…
Abstract
Purpose
The purpose of this paper is to perform the thermo-hydro-mechanical (THM) numerical analysis in order to study the thawing process for frozen soil and to predict the thawing settlement.
Design/methodology/approach
A new one-dimensional multi-field physical coupled model was proposed here to describe the thawing process of saturated frozen soil, whereby the void ratio varied linearly with effective stress (Eq. 10) and hydraulic conductivity (Eq. 27b). The thawing process was simulated with different initial and boundary conditions in an open system with temperature variations. The mechanical behavior and water migration of the representative cases were also investigated.
Findings
The comparisons of representative cases with experimental data demonstrated that the model predicts thawing settlement well. It was found that the larger temperature gradient, higher overburden pressure and higher water content could lead to larger thawing settlement. The temperature was observed that to distribute height linearly in both frozen zone and unfrozen zone of the sample. Water migration forced to a decrease in the water content of the unfrozen zone and an increase in water content at the thawing front.
Research limitations/implications
In this study, only the one-directional thawing processes along the frozen soil samples were investigated numerically and compared with test results, which can be extended to two-dimensional analysis of thawing process in frozen soil.
Originality/value
This study helps to understand the thawing process of frozen soil by coupled thermo-hydro-mechanical numerical simulation.
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Chong Zhang, Jiayi Xiang and Qifan Wen
Due to the harsh underground environment in coal mining, the surface of hydraulic support columns corrodes severely, resulting in significant economic losses. Therefore, a highly…
Abstract
Purpose
Due to the harsh underground environment in coal mining, the surface of hydraulic support columns corrodes severely, resulting in significant economic losses. Therefore, a highly corrosion-resistant coatings is needed to extend the service life of the columns.
Design/methodology/approach
This study aims to compare the corrosion resistance of ST-Cr3C2-NiCr (sealed treatment Cr3C2-NiCr) coatings with industrially applied chromium plating. The corrosion failure mechanism of the coatings was investigated.
Findings
The results demonstrated that the ST-Cr3C2-NiCr coatings exhibited excellent corrosion resistance. After sealing treatment, the corrosion potential of Cr3C2-NiCr coatings was −0.215 V, and the corrosion current density of Cr3C2-NiCr coatings was lower than that of the plated parts.
Practical implications
ST-Cr3C2-NiCr coatings prepared by supersonic atmospheric plasma spraying could provide excellent corrosion resistance in the coal industry.
Originality/value
The low porosity and the presence of the NiCr phase were crucial factors contributing to the preferable corrosion resistance exhibited by the ST-Cr3C2-NiCr coatings. The corrosive process of the coatings involved layer-by-layer delamination of surface oxide film, sub-surface pitting, formation and degradation of sub-surface passive film, as well as severe block-like delamination.
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Miao He, Miao Hao, George Chen, Wenpeng Li, Chong Zhang, Xin Chen, Haitian Wang, Mingyu Zhou and Xianzhang Lei
For the dramatically developed high voltage direct current (HVDC) power transmission, HVDC cables play a vital role in the power transmission across seas and connections with…
Abstract
Purpose
For the dramatically developed high voltage direct current (HVDC) power transmission, HVDC cables play a vital role in the power transmission across seas and connections with renewable power sources. However, the condition monitoring of HVDC cables is still a challenging research topic. This paper aims to understand the influence of external factors, namely, current, cavity location and material properties, on partial discharge (PD) characteristics in HVDC cable in a numerical way referring to the refined Niemeyer’s model.
Design/methodology/approach
The influences of the three external factors are studied by a proposed numerical model for DC PDs based on the modification of a conventional PD model for AC voltage via a finite element analysis method.
Findings
The external factors can influence the discharge magnitude and discharge repetition rate via affecting the electrical conductivity of the material: DC PD is more frequent and with higher discharge magnitude when the cavity is closer to the conductor or the current through the conductor is higher. Both DC PD repetition rate and average discharge magnitude in long-term aged material are lower than virgin material. The effect of discharge on insulation degradation becomes decreasingly significant.
Research limitations/implications
The current work is based on the numerical modelling of DC PDs. Further experimental validations and comparisons are essential for improving the model.
Practical implications
The studies of the influence factors for PDs under HVDC voltage can benefit the research and practical power transmission on DC PDs, contributing the design and test of DC PDs in HVDC cables, exploring the understandings of the DC PDs’ mechanism.
Originality/value
This paper, to the best of author’s knowledge, first studies the influence factors on DC PDs based on the numerical modelling work.
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Miao He, Miao Hao, George Chen, Xin Chen, Wenpeng Li, Chong Zhang, Haitian Wang, Mingyu Zhou and Xianzhang Lei
High voltage direct current (HVDC) cable is an important part in the electric power transmission and distribution systems. However, very little research has been carried out on…
Abstract
Purpose
High voltage direct current (HVDC) cable is an important part in the electric power transmission and distribution systems. However, very little research has been carried out on partial discharge under direct current (DC) conditions. Niemeyer’s model has been widely used under alternating current (AC) conditions. This paper aims to intend to modify the Niemeyer’s model considering both electric field and charge dynamics under DC conditions, and therefore proposes a numerical model describing partial discharge characteristics in HVDC cable.
Design/methodology/approach
This paper intends to understand partial discharge characteristics under DC conditions through numerical modelling. Niemeyer’s model that has been widely used under AC conditions has been modified, taking both electric field and charge dynamics under DC conditions into consideration. The effects of loading level or current through the conductor, cavity location and material properties on partial discharges have also been studied.
Findings
Electrical conductivity is important in determining the characteristics of partial discharge under DC conditions and discharges tend to happen in short when the cavity field exceeds the inception level under the parameter values studied in the paper.
Research limitations/implications
Building the numerical model is the purpose of the paper, and there is lack in experiment and the comparison between the simulation results and experiment.
Practical implications
The proposed model provides the numerical model describing partial discharge in HVDC cable and helps understand the partial discharge mechanism under DC voltage.
Originality/value
To the best of the author’s knowledge, this paper is a very early research on the numerical modelling work on partial discharge under DC voltage.
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Despite being endowed with rich culture and beautiful historic monuments, tourism performance in India has been low. The aim of the paper is to focus specifically on the role of…
Abstract
Despite being endowed with rich culture and beautiful historic monuments, tourism performance in India has been low. The aim of the paper is to focus specifically on the role of key institutions, i.e., the Central (Federal) and State governments that drive tourism policy development and implementation in India. As tourism policy development and implementation in India has not been well documented and understood, this paper provides an analysis of these institutions. These institutes are critical due to their role in policy making, budget allocation and project implementation in the tourism domain. This paper also helps in highlighting the key factors behind low international tourist arrivals in India.
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Hong Min Zhang, Heap-Yih Chong, Yu Zeng and Wei Zhang
Building information modeling (BIM) has brought great advantages to project delivery and performance. However, BIM has also increased the complexity of projects. Research shows…
Abstract
Purpose
Building information modeling (BIM) has brought great advantages to project delivery and performance. However, BIM has also increased the complexity of projects. Research shows that for BIM implementation to have a positive impact in this innovative environment, BIM should be synchronized with stakeholder management. Therefore, this research aims to incorporate the theory of stakeholder management in BIM-enabled projects and determine the theory's intermediary role between BIM implementation and project performance.
Design/methodology/approach
An extensive literature review was conducted and 13 critical success factors (CSFs) for BIM implementation, 29 CSFs for stakeholder management and 6 CSFs for BIM project performance were identified. These measurement items were tested using a questionnaire survey method and analyzed using structural equation modeling. This research was focused on Chinese megaprojects or complex projects that were under a high level of development of BIM, which could reflect the complex stakeholder relationships and BIM implementation for project performance.
Findings
The results indicate that effective use of BIM can directly improve project performance. Further, stakeholder management has an important and positive intermediary role within the path of BIM implementation and project performance, particularly through (1) stakeholder dynamics (SD) and (2) stakeholder engagement or empowerment (SE).
Originality/value
The logical relationship of mutual influence among CSFs has been revealed for BIM-enabled projects. This research contributes to the effective collaboration and practice of BIM in the construction industry.
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Vincent K. Chong, Gary S. Monroe, Isabel Z. Wang and Feida (Frank) Zhang
This study examines the effect of employees' perceptions of political connections on performance measurement systems (PMS) design choice and firm performance. In addition, this…
Abstract
This study examines the effect of employees' perceptions of political connections on performance measurement systems (PMS) design choice and firm performance. In addition, this study explores the moderating effect of social networking, a very common and widely used factor by domestic and foreign multinational firms operating in China, and its joint effect with political connections or PMS design choice on firm performance. We collected survey responses from a sample of 110 managers from manufacturing firms in China. Our results reveal that highly politically connected managers use nonfinancial measures, leading to improved firm performance. Our results suggest that social networking interacts significantly with political connections, and nonfinancial and financial measures on firm performance. The theoretical and practical implications of our findings are discussed.
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Ziwen Gao, Steven F. Lehrer, Tian Xie and Xinyu Zhang
Motivated by empirical features that characterize cryptocurrency volatility data, the authors develop a forecasting strategy that can account for both model uncertainty and…
Abstract
Motivated by empirical features that characterize cryptocurrency volatility data, the authors develop a forecasting strategy that can account for both model uncertainty and heteroskedasticity of unknown form. The theoretical investigation establishes the asymptotic optimality of the proposed heteroskedastic model averaging heterogeneous autoregressive (H-MAHAR) estimator under mild conditions. The authors additionally examine the convergence rate of the estimated weights of the proposed H-MAHAR estimator. This analysis sheds new light on the asymptotic properties of the least squares model averaging estimator under alternative complicated data generating processes (DGPs). To examine the performance of the H-MAHAR estimator, the authors conduct an out-of-sample forecasting application involving 22 different cryptocurrency assets. The results emphasize the importance of accounting for both model uncertainty and heteroskedasticity in practice.