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The purpose of this paper is to provide a shorter time cost, high-accuracy fault diagnosis method for water pumps. Water pumps are widely used in industrial equipment and their fault diagnosis is gaining increasing attention. Considering the time-consuming empirical mode decomposition (EMD) method and the more efficient classification provided by the convolutional neural network (CNN) method, a novel classification method based on incomplete empirical mode decomposition (IEMD) and dual-input dual-channel convolutional neural network (DDCNN) composite data is proposed and applied to the fault diagnosis of water pumps.

This paper proposes a data preprocessing method using IEMD combined with mel-frequency cepstrum coefficient (MFCC) and a neural network model of DDCNN. First, the sound signal is decomposed by IEMD to get numerous intrinsic mode functions (IMFs) and a residual (RES). Several IMFs and one RES are then extracted by MFCC features. Ultimately, the obtained features are split into two channels (IMFs one channel; RES one channel) and input into DDCNN.

The Sound Dataset for Malfunctioning Industrial Machine Investigation and Inspection (MIMII dataset) is used to verify the practicability of the method. Experimental results show that decomposition into an IMF is optimal when taking into account the real-time and accuracy of the diagnosis. Compared with EMD, 51.52% of data preprocessing time, 67.25% of network training time and 63.7% of test time are saved and also improve accuracy.

This method can achieve higher accuracy in fault diagnosis with a shorter time cost. Therefore, the fault diagnosis of equipment based on the sound signal in the factory has certain feasibility and research importance.

This method provides a feasible method for mechanical fault diagnosis based on sound signals in industrial applications.

The purpose of this paper is to articulate the mandate of the International Monetary Fund (IMF) not least in promoting a sound legal regulatory environment for markets to operate globally and its inherent challenges. While acknowledging the plausible work done by the IMF in supporting countries to achieve their macro-economic stability, the paper articulates some of its shortcomings as a global institution. It is evident that the post-war climate in which the World Bank and IMF were created has drastically changed – which presupposes that these institutions now need to reposition themselves to reflect on contemporary global challenges accordingly. The author has argued in the past that a robust regulatory system should be devised taking into account the dynamic challenges in the market environment but also to prevent them from happening again.

The paper has utilized empirical evidence to evaluate the mandate of the IMF in addressing its dynamic challenges such as the global financial and debt crises in Europe and the USA and prevention of financial sector abuse globally. The IMF is one of the Bretton Woods Institutions charged with the oversight responsibility to enforce policies and enable countries to manage their macro-economic challenges efficiently.

The findings demonstrate that the IMF is as relevant and important as it was when it was created in 1945. However, there is a need for intrinsic and structural changes within this institution to continue discharging its mandate in a changed global regulatory landscape. The IMF is still crucial in fostering a fundamental stabilization function to fragile global economies in areas of financial and technical assistance, and developing requisite legal and supervisory infrastructure within fledging member countries.

The paper was written by analysis of both theoretical and empirical data largely based on secondary data sources. It would have been better to first present the findings in an international conference to solicit wide views and internalize them accordingly.

While acknowledging the plausible work done by the IMF and its counterpart the World Bank in facilitating global financial markets regulation and prevention of financial sector abuse, as oversight institutions, they need to constantly review their mandate to respond robustly to their dynamic challenges such as the global and debt crises and financial sector abuse. Oversight institutions need to constantly review and adapt their mandate accordingly, if they are to discharge their varied responsibilities efficiently. They cannot stand still in the face of challenges because they will be superseded and kept at a back foot.

Markets and states are embedded in each other, and the way they are regulated is of a significant importance to varied stakeholders and people.

This paper is one of its kind, is unique in its character and evaluates embedded issues using empirical evidence in a way not done in its context before. Secondary data sources have been evaluated to achieve a thoughtful analysis of the objectives of the paper.

This paper seeks to review and extend previous research on the performance of Islamic mutual funds (IMFs) by evaluating the relative performance of IMFs and conventional funds during the global economic crisis in the context of the Saudi Arabian capital market.

This paper compares the market timing and stock selection abilities of 159 mutual funds listed on the Saudi Arabian stock market from 2007 to 2011 by using the CAPM regression and Treynor and Mazuy models. The paper addresses the benchmark problem from which most prior IMFs studies suffered by using appropriate regional benchmarks. As a robustness check, coefficients of IMFs and conventional funds are compared by using the differences in mean and standard deviation analysis obtained from the standard CAPM model on individual funds.

The empirical results show evidence of better performance of IMFs relative to conventional funds during periods of economic crisis. In addition, although there is no evidence of relative superiority in market timing ability, managers of IMFs appear to have better stock selection ability during times of economic crisis.

The combination of superior stock selection ability of IMFs and the negative market timing ability of conventional funds suggest that IMFs offer better hedging opportunities for investors during periods of economic downturn.

The findings of this paper suggest that IMFs can provide hedging benefits during adverse economic conditions – an issue of great importance due to the current and forecast insecurity surrounding the global capital markets. By holding a portion of their investment portfolio in IMFs, investors can experience a higher degree of confidence in terms of investment security, growth and returns. Similarly, managers of conventional funds can improve risk adjusted performance by following similar screening criteria as IMFs during economic slowdowns.

This paper represents the first comprehensive study on the comparative performance of Islamic and conventional mutual funds during the current financial crisis by including all fund managers listed on the Saudi Arabian stock market. The paper extends the knowledge of the emerging literature of Islamic finance and mutual fund performance.

The purpose of this paper is to present the application of Hilbert–Huang transform (HHT) for fatigue damage feature characterisation in the time–frequency domain based on strain signals obtained from the automotive coil springs.

HHT was employed to detect the temporary changes in frequency characteristics of the vibration response of the signals. The extraction successfully reduced the length of the original signal to 40 per cent, whereas the fatigue damage was retained. The analysis process for this work is divided into three stages: signal characterisation with the application of fatigue data editing (FDE) for fatigue life assessment, empirical mode decomposition with Hilbert transform, an energy–time–frequency distribution analysis of each intrinsic mode function (IMF).

The edited signal had a time length of 72.5 s, which was 40 per cent lower than the original signal. Both signals were retained statistically with close mean, root-mean-square and kurtosis value. FDE improved the fatigue life, and the extraction did not affect the content and behaviour of the original signal because the editing technique only removed the minimal fatigue damage potential. HHT helped to remove unnecessary noise in the recorded signals. EMD produced sets of IMFs that indicated the differences between the original signal and mean of the signal to produce new components. The low-frequency energy was expected to cause large damage, whereas the high-frequency energy will cause small damage.

HHT and EMD can be used in the strain data signal analysis of the automotive component of a suspension system. This is to improve the fatigue life, where the extraction did not affect the content and behaviour of the original signal because the editing technique only removed the minimal fatigue damage potential.

The purpose of this paper is to review the practicality and implications of capital controls in emerging economies in the international financial landscape subsequent to the 1997 Asian financial crisis (AFC) and the 2008 global financial crisis (GFC).

The doctrinal approach used in this study relies primarily on primary data from relevant statutes and regulations in the capital and financial markets, and secondary data from research findings of published sources available in the public domain. It also makes concurrent use of the case study approach.

The disdain over the use of capital controls by emerging economies such as Malaysia in the 1997 AFC by multilateral agencies like the International Monetary Fund (IMF) since then and particularly after the 2008 GFC and the 2011/2012 European financial crisis (EFC) has been quietly and gradually transformed into a viable policy option under defined circumstances, especially at the IMF and global forums like the G20. The 1997 AFC in particular induced East Asian economies and others to strengthen the macroeconomic and financial positions, such that they were not only able to withstand the impacts of the 2008 GFC and the 2011/2012 EFC but also contributed to their gradual recoveries through their participation as net lenders to the IMF. The enhanced confidence of these emerging economies to use various capital controls without seeking IMF support spawned new thinking at the IMF to result in the introduction of policy guidelines sanctioning the use of capital controls under particular circumstances.

The paper is constrained by the usual limitations connected with qualitative studies, but this is generally mitigated by triangulation of perspectives and so on.

This paper provides a critical overview of the pros and cons of capital controls. In particular, it analyses the implications of capital controls as a policy option for emerging economies when facing severe financial crisis. It also critically discusses how and why flowing from the aftermath of its application by Malaysia in the 1997 AFC and subsequent employment by other successful emerging economies in response to the 2008 GFC and 2011/2012 EFC, multilateral institutions such as the IMF and international forum like the G20 developed a more positive approach toward the use of capital controls.

The purpose of this paper is to compare the return performance and persistence of ethical and conventional mutual funds during two extreme events, the Asian and the global financial crises under Shariah constraints.

The overall sample comprises of 129 Islamic mutual funds (IMFs) and 350 conventional mutual funds (CMFs) in Malaysia, and the average monthly data cover two periods of market cycles, before and during a financial crisis. The net of all expenses data is obtained from the Morningstar Database. This study employs various market risk-adjusted performance measures (ratios) to estimate the funds’ overall performance during the crises, and then it uses CAPM model to estimate the parameters via panel data approach. Moreover, paper employs the two persistence performance measures on IMFs and CMFs through contingency tables. It tests for the performance persistence effects for IMFs, CMFs using repeat winner and the cross-product ratio (CPR) tests proposed by Malkiel (1995) and Brown and Goetzmann (1995), respectively.

The main findings of the paper are: on average, both funds IMF and the CMF outperform the market return during the entire sample period; none of the funds is better than the “others” during the financial crises and the pre-crisis periods; the ethical fund – IMF outperforms the CMF over the study period. This outcome also indicates that ethical funds are more persistent especially during and the pre-crisis AFC and the GFC periods.

The finding of this study is limited to only Malaysian data because the objective was to guideline investors and market players in Malaysia to prefer investing in Islamic ethical funds to diversify their investment portfolio.

Cautions to use existing ratio measures and CAPM model rather persistence measures may be used with existing methodologies in light of extreme events which influenced investor decision making for better returns at lower risks.

A class of ethical funds consists of religious sustainable, socially responsible and impact-investing (SRI) funds but Shariah implications of halal investment must be observed to avoid prohibited practices within the class of SRI funds.

The work done in this paper are original in the sense that the authors employed various ratios to measure fund performance in conjunction with CAPM model and then tested for two persistence performance measures; the repeat winner and CPR tests.

This paper applied grey wave forecasting in a decomposition–ensemble forecasting method for modelling the complex and non-linear features in time series data. This application aims to test the advantages of grey wave forecasting method in predicting time series with periodic fluctuations.

The decomposition–ensemble method combines empirical mode decomposition (EMD), component reconstruction technology and grey wave forecasting. More specifically, EMD is used to decompose time series data into different intrinsic mode function (IMF) components in the first step. Permutation entropy and the average of each IMF are checked for component reconstruction. Then the grey wave forecasting model or ARMA is used to predict each IMF according to the characters of each IMF.

In the empirical analysis, the China container freight index (CCFI) is applied in checking prediction performance. Using two different time periods, the results show that the proposed method performs better than random walk and ARMA in multi-step-ahead prediction.

The decomposition–ensemble method based on EMD and grey wave forecasting model expands the application area of the grey system theory and graphic forecasting method. Grey wave forecasting performs better for data set with periodic fluctuations. Forecasting CCFI assists practitioners in the shipping industry in decision-making.

This paper aims to provide new insights regarding the impact of International Monetary Fund (IMF) programs on income inequality.

The paper uses a novel methodological approach proposed by Acemoglu et al. (2019), using (1) the regression adjustment, (2) the inverse probability weighting and (3) the doubly robust estimator, which combines (1) and (2), and a sample of annual data for 135 developing countries over the time period 1970 to 2015.

The findings show that IMF programs are associated with greater income inequality for up to five years. By differentiating the effect of IMF programs, the authors find that only IMF non-concessional programs have a significant detrimental effect on income inequality, while IMF concessional programs do not have a consistent effect on income inequality. In addition, the authors find that only IMF programs with a higher number of conditions have a detrimental and statistically significant effect on income inequality, compared to IMF programs with a smaller number of conditions, where their effect on income inequality is found to be insignificant.

To the best of the authors’ knowledge, the analysis developed in this paper contributes to the existing literature by applying the most methodologically sound identification strategy, which does not rely on the linearity assumption, the selection of instruments or matching variables and additionally takes into account the selection bias related to IMF program participation.

The purpose of this paper is to highlight the benefits of starting Islamic microfinance (IMF) in India and the core concepts of IMF.

Methodology of the paper is exploratory in nature and analysing of a new concept for implementation.

The brief findings have been that Indian masses, especially the poor minority community and lower middle class, are in a pathetic situation financially, as per survey analysis. IMF can play a very critical role in providing deliverance from financial slavery.

Limitations of the paper have been that the survey was done in a limited area and within a particular community and financial background.

Research finding of the paper demonstrates a practical roadmap or a blueprint on the need of starting IMF in India.

Social implications of the paper are that if the research findings are implemented and IMF were to be offered in India, the mass suicides committed specially by the Indian farmers can be contained to a great extent and can be virtually stopped.

The paper is original in concept, as IMF is totally new to the Indian scenario, and the paper is of high value for regulators to seriously think on initiating the IMF machinery in India for the benefit of all Indians.

The purpose of this paper is to readily bring to the fore, the vital dimension that the Bretton Woods Institutions, exemplified by both the International Monetary Fund (IMF) and the World Bank, has brought into the global economic template to dampen the momentum of corruption and money laundering through the impact of their activities in less developed countries (LDCs). The original mandate of the two institutions was to address the balance of payments and developmental issues of countries as a result of the devastating effects of the Second World War. However, this could not be achieved in an atmosphere engulfed with corruption and money laundering. As a result, it became necessary for them to intervene albeit through direct or indirect mechanisms demonstrated by the use of soft law bodies such as Basel Committee on Banking Supervisors (BCBS) and Financial Action Task Force (FATF).

This paper relies on primary legal documentations such as BCBS, FATF, articles of both IMF and World Bank to mention but a few in the analysis. The paper is doctrinal.

There is undoubtedly glaring indications that through the efforts of both IMF and the Bank, tremendous inroad has been made in LDCs in modulating the tempo of the malaise.

This paper is addressed to the authorities that are concerned about the scourge of the malaise and the impact to pay more attention to the mechanisms of soft laws used by the Bretton Woods Institutions to get their anti-corruption message through in LDCs.

This lies on the fact that the efforts of both IMF and the Bank have awakened the importance that should be attached to some soft laws in curtailing the issues.