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This paper aims to focus on the finite element method in the frequency domain (FD-FEM) for the transient electric field in the non-sinusoidal steady state under the non-sinusoidal periodic voltage excitation.

Firstly, the boundary value problem of the transient electric field in the frequency domain is described, and the finite element equation of the FD-FEM is derived by Galerkin’s method. Secondly, the constrained electric field equation on the boundary in the frequency domain (FD-CEFEB) is also derived, which can solve the electric field intensity on the boundary and the dielectric interface with high accuracy. Thirdly, the calculation procedures of the FD-FEM with FD-CEFEB are introduced in detail. Finally, a numerical example of the press-packed insulated gate bipolar transistor under the working condition of the repetitive turn-on and turn-off is given.

The FD-CEFEB improves numerical accuracy of electric field intensity on the boundary and interfacial charge density, which can be achieved by modifying the existing FD-FEMs’ code in appropriate steps. Moreover, the proposed FD-FEM and the FD-CEFEB will only increase calculation costs by a little compared with the traditional FD-FEMs.

The FD-CEFEB can directly solve the electric field intensity on the boundary and the dielectric interface with high accuracy. This paper provides a new FD-FEM for the transient electric field in the non-sinusoidal steady state with high accuracy, which is suitable for combined insulation structure with a long time constant.

This paper aims to propose a method for accurate radar echo simulation of wind turbines (WTs) array. It can solve the problem of passive interference from wind farms to neighboring radar stations.

First of all, the equivalent model of scattering centers of a single WT is obtained by using the spatial spectrum estimation method, and the accuracy of this model is verified by the scaled model experiment; then scattering centers model of WTs array was established by using the spatial coordinate transformation method. According to the position relationship between the model and the radar, and combined with the multipath scattering theory, the radar echo equation of WTs array was deduced. Finally, the simulation analysis is carried out with the four GoldWind 77/1500 WTs as an example and compared with the traditional methods.

This paper verifies the accuracy of the equivalent model of scattering centers through the WT scaled model experiment, and through simulation analysis, it is found that the result of this method is more consistent with the multipath scattering of radar echo between WTs array in practical engineering than the traditional method.

Based on the theory of high-frequency scattering, this paper introduces scattering centers into the solution of radar echo and considers the multipath scattering of radar echo, then a method for solving the radar echo of WTs array based on scattering centers is proposed.

According to the method of moment, an effective electromagnetic approach for the substation's grounding grid in high frequency domain is presented. An efficient method based on the generalized pencil‐of‐function method is developed to calculate the generalized Sommerfeld integral. With the method, the value of Green's function in a two‐layer medium can be obtained quickly and accurately. The number of unknown variables of the moment method is small. As the dipole antenna theory is introduced, the frequency of the injected current to the grounding grid can vary in a large scale. The method can be used to analyze not only the performance of the grounding grid, but also other grids located under the earth, in the air or penetrating a lossy interface. The computational results are in good agreement with those obtained by other method.

The purpose of this paper is to investigate the relationships between structure characteristics of project network, types of conflicts and project success.

Network density and centrality were used to reflect the structure characteristics of project network. This study collected 254 valid responses from construction professionals (including project managers, department managers and project engineers) via a questionnaire survey and analyzed the data using structural equation modeling and bootstrapping techniques.

The results showed that network centrality of project stakeholders negatively affected project success, whereas the effect of network density on project success was non-significant. The network density was positively related to task conflict, whereas negatively related to process and relationship conflict. Network centrality was positively related to relationship conflict and had negative effects on task and process conflict. Project conflicts served as the mediator, weakening the relationship between network structure characteristics and project success.

This study provides direction for project managers and other stakeholders (e.g. owners, contractors and subcontractors) to appropriately establish social ties and manage conflicts to achieve project success. However, the potential influence of conflict transformation on project success, the dynamic nature of project networks and the network diagram were not addressed in the context of diverse culture. The future research should cover different stakeholders in order to get an integrative understanding of project networks and collect data from different cultural and industrial characteristics, extending and verifying the results.

The outcomes of the study provide evidence in regard to social network ties governance, which is comprised by the important or representative stakeholders, being a part of the effective strategy in improving project success. This study also contributes to the knowledge of conflict management in the project context, revealing the positive and negative of project conflicts and enriching the current understandings of the underlying mechanism of the project network characteristics on project success.

This study aims to explore the influence of the strength of ties (strong ties and weak ties) on contractual flexibility (term flexibility and process flexibility) and relationship quality among stakeholders in a megaproject network.

This study, via a questionnaire survey, collected 380 valid responses from megaproject professionals (including project managers, department managers and project engineers). The data were analyzed using least squares structural equation modeling.

The results show that both strong ties and weak ties have positive effects on relationship quality. The introduction of contractual flexibility can help improve relationship quality by combining the positive effects of the strength of ties. Interestingly, the indirect influence of strong ties on relationship quality is mainly due to term flexibility. However, the influence of process flexibility is not significant, while weak ties have an indirect influence through term flexibility and process flexibility.

This study, while helpful to megaproject management both in theory and practice, is nevertheless subject to several limitations. First, this study only considers the impact of the strength of ties on contractual flexibility and relationship quality; other factors, such as environmental uncertainty, are not explored. Second, the sample data are limited to just a few regions of China. Future research should cover other influencing factors, in order to make the model more substantial; data should also be collected from different cultural and industrial sources, thereby extending and further verifying the results.

This study makes three contributions to extant megaproject literature. First, this study provides a deep and nuanced understanding of the strength of ties. With the distinction between strong ties and weak ties clearly explained, this research furnishes a subtler understanding of relationship governance than has previously been achieved. Second, by precisely identifying the mechanism of how contract flexibility improves contract control and coordination functions, this research offers a complementary view of how contractual flexibility positively contributes to cooperation and relationship quality. Third, this study identifies which dimension of the strength of ties is more influential. This brings a new explanation for the previous controversy and offers some insight into the determinants of how to improve relationship quality in Chinese megaprojects.

The issue of conflict has been around for a long time. With the development of economic development and the diversification of industries, conflicts have shown a trend of complex development. By reviewing interorganizational conflict in construction, this study aims to identify the formation, development and evolution of conflict and to assist organizational managers in using scientific conflict management tools to deal with and resolve conflict.

This paper considers the following questions: “What is the overall research status of the interorganizational conflict in construction projects?” and “What are the trendy issues in interorganizational conflicts in construction projects?” This study uses R software's Biblioshiny program to describe the overall conflict between organizations to answer question 1. This study uses Netminer – a social network analysis (SNA) software and text mining to explore research trends and answer question 2.

Interorganizational conflict has been one of the most important topics in recent years when it comes to conflict issues. This paper intends to examine interorganizational conflict in construction in an attempt to shed light on four main topics regarding the conflict: the application of conflict theory; factors that induce conflict; the effect of conflict on performance; and methods of conflict management.

Through a comprehensive analysis of interorganizational conflict, this study helps to increase the understanding of scholars in the field of conflict research. This study suggests future research directions and provides references for managers to improve their conflict management, decision-making and performance.

This study combines bibliometrics, SNA and text mining research methods. Multidimensional and multiperspectival assessments are performed based on the status of the research, its evolution and trends. The results of this study can be used to guide the resolution of conflict in other industries. This study also enriches the scientific theory related to the interorganizational conflict.

This study aims to promote the anti-disturbance and tracking accuracy performance of the servo systems, in which a modified active disturbance rejection control (MADRC) scheme is proposed.

An adaptive radial basis function (ARBF) neural network is utilized to estimate and compensate dominant friction torque disturbance, and a parallel high-gain extended state observer (PHESO) is employed to further compensate residual and other uncertain disturbances. This parallel compensation structure reduces the burden of single ESO and improves the response speed of permanent magnet synchronous motor (PMSM) to hybrid disturbances. Moreover, the sliding mode control (SMC) rate is introduced to design an adaptive update law of ARBF.

Simulation and experimental results show that as compared to conventional ADRC and SMC algorithms, the position tracking error is only 2.3% and the average estimation error of the total disturbances is only 1.4% in the proposed MADRC algorithm.

The disturbance parallel estimation structure proposed in MADRC algorithm is proved to significantly improve the performance of anti-disturbance and tracking accuracy.

The purpose of this paper is twofold: to identify, evaluate and structure the research that focusses on omni-channel retailing from the perspective of logistics and supply chain management; and to reveal the intellectual foundation of omni-channel retailing research.

The paper applies a multi-method approach by conducting a content-analysis-based literature review of 70 academic papers. Based on the reference lists of these papers, the authors performed a citation and co-citation analysis based on the 34 most frequently cited papers. This analysis included multidimensional scaling, a cluster analysis and factor analysis.

The study reveals the limited consideration of logistics and supply chain management literature in the foundation of the omni-channel retailing research. Further, the authors see a dominance of empirical research as compared to conceptual and analytical research. Overall, there is a focus on the Western retail context in this research field. The intellectual foundation is embedded in the marketing discipline and can be characterised as lacking a robust theoretical foundation.

The contribution of this research is identifying, evaluating and structuring the literature of omni-channel research and providing an overview of the state of the art of this research area considering its interdisciplinary nature. This paper thus supports researchers looking to holistically comprehend, prioritise and use the underpinning literature central to the phenomena of omni-channel retailing. For practitioners and academics alike, the findings can trigger and support future research and an evolving understanding of omni-channel retailing.

This paper aims to provide a transaction cost analysis (TCA) perspective to exporting firms' selection of foreign markets and the performance consequences of this international market selection (IMS) decision. This paper proposes a conceptual framework that hypothesizes the relationship between transaction cost factors, IMS and export performance.

This paper tests the proposed framework with a database of Chinese manufacturing firms using regression models and controlling for possible endogeneity. The endogeneity issue may arise due to IMS being influenced by unobserved industrial/firm attributes.

The results show that transaction cost factors are able to explain IMS. Furthermore, firms whose decisions have incorporated transaction cost factors perform significantly better than their rivals.

Understanding transaction costs helps decision-makers formulate more efficient IMS strategy to achieve superior export performance. Future research on IMS may examine “passive exporting”, i.e. exporting initiated by overseas buyers, consider the role of institutional distance and use other approaches toward cultural distance-based IMS.

This study adds a new theoretical underpinning for IMS by developing a framework based on TCA, and thus broadens the applications of TCA into IMS. Our empirical results support this extension.

This study seeks to fill a gap in the literature by examining the role of family firm succession in shaping the firm's approach to financialisation, which has received limited attention in the previous research. In addition, the study explores the influence of factors such as clan culture, concentration of control and generational differences on the relationship between succession and financialisation.

Data were based on a sample of 7,023 firm-year observations, compiled from the listed family firms in China's A-share. Several tobit models are used for analysing the data and testing the hypotheses.

Family firm succession is negatively related to the level of financialisation, and this relationship is influenced by clan culture, concentration of control and the stage of succession. Specifically, a higher clan culture, a greater concentration of ultimate control by the controlling family member and the dominance of the first generation in management strengthens the negative relationship between family firm succession and financialisation.

This study offers new insights into the consequence of family firm succession on a new area of the firm's strategy, i.e. financialisation. The study further advances the understanding of family firm succession by considering the role of clan culture, the concentration of control and the stage of the succession process.