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This paper aims to propose a high‐frequency (HF) model able to compute the flux density in the vicinity of the laminated stator core of an AC machine.

Experiments form the main approach. Analytical results previously obtained with a simplified rectangular laminated structure are confirmed with a standard cylindrical magnetic core.

Three frequency domains are defined, depending on the skin depth relative to the thickness of the magnetic sheets. A methodological approach is proposed for each domain. For higher frequencies, the magnetic core can be considered as transparent for external field computation.

The HF model is valid for skin depths much lower than the thickness of the magnetic sheets.

The proposed HF model provides a link between the weak field measured in the natural void existing between the stator core and the housing of large electrical machines. With such a link, it is possible to develop a new monitoring system able to detect and to localize the partial discharges in the stator winding of a large machine.

The low‐frequency limit of the model has been measured. It corresponds to a ratio of 1/40 between the skin depth and the magnetic sheet thickness. Therefore this model offers a new perspective for maintenance applications.

A new model able to describe the high frequency (HF) behaviour of the laminated cores of AC machines is proposed. The aim is to compute the external flux density of machine cores, corresponding to electromagnetic emissions in the HF range when the skin effect is predominant.

For high frequencies, the skin depth is much lower than the thickness of a lamination and the external flux density is determined using a new analytical model. The validity of this model is confirmed by measurements performed on a magnetic core representing a small part of a large machine and a finite element 3D simulation.

For high frequencies, the external flux density is computed considering an equivalent current layer flowing on the laminated core external surface. Eddy currents in the laminated core have a large influence on the current density in this current layer.

The new model proposed is valid when the skin depth is lower than half the thickness of a lamination.

The knowledge of the machine magnetic core behaviour in the frame of the HF electromagnetic emissions has practical applications for large AC machine maintenance such as the localization of partial discharges in the winding insulation. With this model, it is possible to analyse the information given by small magnetic sensors placed between the machine core and the external frame to solve all the insulation problems.

The new proposed model is able to establish a link between the electric HF phenomena in the windings of a working machine and the magnetic flux density outside the laminated core.

Although Multi-Layer Ceramic Capacitors (MLCC) are known for its better frequency performance and voltage handling capacity, but under various environmental conditions, its reliability becomes a challenging issue. In modern era of integration, the failure of one component can degrade or shutdown the whole electronic device. The lifetime estimation of MLCC can enhance the reuse capability and furthermore, reduces the e-waste, which is a global issue.

The residual lifetime of MLCC is estimated using empirical method i.e. Military handbook MILHDBK2017F, statistical method i.e. regression analysis using Minitab18.1 as well as intelligent technique i.e. artificial neural networks (ANN) using MATLAB2017b. ANN Feed-Forward Back-Propagation learning with sigmoid transfer function [3–10–1–1] is considered using 73% of available data for training and 27% for testing and validation. The design of experiments is framed using Taguchi’s approach L16 orthogonal array.

After exploring the lifetime of MLCC, using empirical, statistical and intelligent techniques, an error analysis is conducted, which shows that regression analysis has 97.05% accuracy and ANN has 94.07% accuracy.

An intelligent method is presented for condition monitoring and health prognostics of MLCC, which warns the user about its residual lifetime so that faulty component can be replaced in time.

Capacitors are one of the most common passive components on a circuit board. From a tiny toy to substantial satellite, a capacitor plays an important role. Untimely failure of a capacitor can destruct the entire system. This research paper targets the reliability assessment of tantalum capacitor, to reduce e-waste and enhance its reusable capability.

The residual lifetime of a tantalum capacitor is estimated using the empirical method, i.e. military handbook MILHDBK2017F, and validated using an experimental approach, i.e. accelerated life testing (ALT). The various influencing acceleration factors are explored, and experiments are designed using Taguchi's approach. Empirical methods such as the military handbook is used for assessing the reliability of a tantalum capacitor, for ground and mobile applications.

After exploring the lifetime of a tantalum capacitor using empirical and experimental techniques, an error analysis is conducted, which shows the validity of empirical technique, with an accuracy of 95.21%.

The condition monitoring and health prognostics of tantalum capacitors, for ground and mobile applications, are explored using empirical and experimental techniques, which warns the user about its residual lifetime so that the faulty component can be replaced in time.

This paper explores the vocational training of construction workers in Guangdong Province of China and identifies its position in the global political-economic spectrum of skill formation.

The paper reviews construction vocational education and training (VET) of major political economies to develop a theoretical framework that guides an in-depth case study of Guangdong. Document analysis, field trip observations, meetings and semi-structured interviews were combined to explore the political-economic environment, political stakeholders and quality assurance mechanisms of industrial training in Guangdong's construction sector. The findings were compared with construction VET of other economies reported in the literature.

Construction training in Guangdong is deeply rooted in the local history and culture, under strong dominance of the state, while continually evolves to respond to the fluid market and therefore can be conceptualised as “market-in-state”. The political stakeholders are embedded within the state to ensure that skills policies are implemented in-line with industry policies. The differences between the training of Guangdong and its foreign counterparts are attributed to their divergent political-economic models.

As the case study was undertaken only with Guangdong, the generalisability of its findings can be improved through future research within a broader context of multiple provinces of China through both qualitative and quantitative research approaches.

Plausible foreign VET approaches are likely adaptable to the Chinese context only when conducive political-economic environment could be enabled. The findings are useful for developing countries to learn from the VET experience of industrialised economies. Construction workers' training in Guangdong can be improved by strengthening labour regulation at lower subcontracting levels and ensuring the presence of industrial associations and unions for collective training supervision.

The paper contributes to the field of construction engineering and management with a theoretical framework that guides empirical studies on the influence of the political-economic environment upon the ways political stakeholders develop and participate in construction VET. The exploration based on this framework revealed the position of the vocational training of construction workers in Guangdong in the global political-economic spectrum of skill formation.

The purpose of this paper is to examine the post-enactment status of China’s Labour Contract Law and Labour Dispute Mediation and Arbitration Law, focusing on the dramatic rise in remuneration litigation amidst much criticism of weak or ineffective implementation of these laws.

This paper deploys both quantitative and qualitative analysis methods to investigate the features of remuneration litigation. Remuneration judgments by Beijing People’s Courts from 1 January 2014 to 31 December 2017 provide the primary empirical data. The intrinsic features of remuneration disputes are investigated to delineate subcategories of claims. Several judges were also interviewed to further explore the nature of remuneration disputes.

Four types of remuneration claims were identified: regular wage, minimum wage, overtime and others (including subsidies and welfare). Examination of these four types, especially how they are processed until concluded by court adjudication, provides a fuller picture of the post-enactment status of these laws and yields objective and rational findings. To explain the continuing steady rise in the volume of remuneration claims, as more workers have knowledge of their rights and access to the courts, this study identifies an increase in the number of factually complicated cases (e.g. overtime claims) and abmiguity in the relevant law, leaving some remuneration disputes difficult, if not impossible, to adjudicate. Conversely, the study also finds significant positive trends following these laws’ enactment, particularly a reduction in straightforward cases, such as disputes concerning non-payment of wages/minimum wages, on which the law is clear. It is evidently imperative to improve the clarity of the current laws through further legislation, as the most appropriate next step in China’s juridification process of developing its own rule of Labour Law.

This study is purposely limited to examining remuneration litigation in Beijing’s courts from 2014 to 2017, which is representative of the national trend of dramatically rising remuneration disputes, and thus provides valuable insights. Future studies should cover a wider geographic territory and other categories of labour disputes to provide an even more comprehensive picture of the challenges and potential solutions.

By understanding the driving factors of rising labour remuneration disputes, the legislature, workers and employers can act accordingly to curb labour conflicts. The growing complexity and technicality of remuneration litigation indicates that the pressing need of labour juridification is to deploy a subtle, comprehensive method to improve legal clarity and judicial professionalism.

This study uniquely divides the types of remuneration litigation in Beijing, adopting methods and yielding findings absent from the prior literature. Both the progress and challenges in China’s rule of Labour Law process are reflected in this work, together with public policy and theoretical implications for further study.

This paper aims to investigate to what extent and for which reasons the codes of conduct and social audits of multinational corporations (MNCs) have failed to change practices within Chinese factories. A special attention is given to the social compliance initiatives (SCIs) and multi-stakeholder initiatives (MSIs) which did not overcome the main obstacles of the compliance approach.

This research is based on a fieldwork in China, including 36 semi-constructed interviews with practitioners involved in corporate social responsibility (CSR), participant observation in the CSR programme of the International Labour Organisation office in Beijing and several visits of factories involved in CSR programmes. Secondary sources are used to estimate the distribution of value added along global value chains (GVCs).

The codes of conduct and social audits tend to reproduce the domination of MNCs within GVCs. This paper highlights some obstacles – and opportunities – for CSR appropriate to the Chinese context.

Only a few MNCs agreed to meet the author and speak openly. No one allowed the author to visit their suppliers’ factories.

The findings of this study suggest that the most widespread approach to CSR by MNCs is flawed. More attention should be given to specific institutional contexts and to workers’ participation.

CSR discourse and practices in China are put in the context of GVCs and in the transformation of Chinese industry and labour relations. This method allows going beyond a case study approach. Instrumentations of several SCIs and MSIs are also analysed in detail.

This study aims to examine the adequate application of rights and protections granted to employees under labor laws and regulations to foreign employees working in China.

The authors analyzed applicable laws, regulations and related literature on the employment of foreigners in China and employed quantitative and qualitative methods to scrutinize the features of labor disputes involving foreign employees, to assess claims of inconsistencies. A group of judges and labor arbitrators were also interviewed.

The inconsistencies between Chinese immigration and labor laws, and between applicable laws and court enforcement, result in a considerable gap in employment protection for foreign employees. They have grown over the last two decades, in a changing legal environment of labor protection and labor market for foreigners.

This study focused on documented foreign employees' labor litigations from 2017 to 2020 in people's courts in China's five most economically developed regions. Future studies could cover a wider geographic territory and labor disputes of undocumented foreign employees to provide an even more comprehensive picture of the challenges and potential solutions.

The inconsistency between immigration and labor law regarding employment protection for documented foreign employees requires legal clarification and regulation to ensure equal employment protection of both Chinese and foreign employees.

There are limited studies using empirical data from different regions in China to document and understand the gap between the statutory labor protections and the labor protection granted to foreign employees in law as well as in court practice.

The purpose of this paper is to present findings on the efficacy of documents that US police are required to provide to domestic violence survivors, specifically intimate partner violence (IPV) survivors. Triangulating data from survivors, shelter staff, and law enforcement officers across four stages of IPV experiences, this national study identifies priorities among essential information needs and proposes information guidelines for law enforcement.

A nationally distributed, 13-item, e-mail questionnaire was submitted to a stratified sample (ten largest, median, and smallest) of law enforcement agencies in all 50 states. Domestic violence shelters in each of the 1,500 cities were similarly recruited; survivors were recruited indirectly via shelter staff. The questions were clustered in terms of four common situations. Responses from 839 individuals were obtained, self-identified as police officers (481), shelter staff (263), and IPV survivors (95).

Documents should be formatted for safety (i.e. small), developed for specific situations, and written simply. They should also offer information about non-law enforcement services. All three of the populations queried agreed that the immediate needs of survivors are stronger than their long-term needs.

The primary limitations are that the survey could include no means of determining the degree to which the respondents match the sample, and the response rate was insufficient to support inferential statistical analysis.

This national study, the first of its kind, explicates the nuances of information elements in the personally situated experiences of survivors, and it presents the first set of suggested law-enforcement document design guidelines.

Working towards a broader understanding of information provision by agencies responding to crisis situations, the aim of this paper is to examine mandated information provision on the part of law enforcement to survivors of intimate partner violence at the scene of an emergency response.

The authors conducted a detailed content analysis of 1,851 documents supplied by local law enforcement agencies from 755 US cities. A 29‐element coding framework was developed to identify five key content areas of information: the nature of abuse, survivor norms, police information, legal options, and community resources.

The best represented content areas related to police information, legal options, and community resources. Information on the nature of abuse and survivor hood was dramatically less well represented. Law enforcement understandably privileges that information which involves immediate, concrete action and within which the officer may have a responsibility (for example, to obtain a temporary restraining order). Correlations between city size and the presence of information elements were minimal, while several significant correlations based on region were noted.

This is the first nationwide study of the information that police are required to provide to survivors of intimate partner violence. Understanding the features of this seldom‐discussed yet vital interaction can help IS professionals support practices and protocols of other agencies responding to crisis situations who may be struggling with minimal preparation for information interactions.