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1 – 10 of 34C. Sherman Cheung, Clarence C.Y. Kwan and Peter C. Miu
In response to common criticisms on the appropriateness of mean-variance in asset allocation decisions involving hedge funds, we offer a mean-Gini framework as an alternative. The…
Abstract
In response to common criticisms on the appropriateness of mean-variance in asset allocation decisions involving hedge funds, we offer a mean-Gini framework as an alternative. The mean-Gini framework does not require the usual normality assumption concerning return distributions. We also evaluate empirically the differences in allocation outcomes between the two frameworks using historical data. The differences turn out to be significant. The evidence thus confirms the inappropriateness of the mean-variance framework and enhances the attractiveness of mean-Gini for this asset class.
C. Sherman Cheung and Peter C. Miu
Using a market model of international equity returns, which fully incorporates the regime switching and heteroskedasticity effects, we conduct an empirical study on the asymmetric…
Abstract
Using a market model of international equity returns, which fully incorporates the regime switching and heteroskedasticity effects, we conduct an empirical study on the asymmetric behavior of 31 emerging equity markets across the different regimes of both the global and the local markets. Asymmetric correlation is found to be much weaker than that among developed markets as documented in the recent studies. There is little evidence of performance enhancement by possessing information on asymmetric correlation in international asset allocation strategies involving emerging markets.
Examines the tenth published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects. Subjects…
Abstract
Examines the tenth published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects. Subjects discussed include cotton fabric processing, asbestos substitutes, textile adjuncts to cardiovascular surgery, wet textile processes, hand evaluation, nanotechnology, thermoplastic composites, robotic ironing, protective clothing (agricultural and industrial), ecological aspects of fibre properties – to name but a few! There would appear to be no limit to the future potential for textile applications.
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Narat Charupat, Zhe Ma and Peter Miu
Prior literature has shown that, theoretically, holding-period returns of a leveraged exchange-traded fund (LETF) are generally negatively affected by the volatility of the…
Abstract
Purpose
Prior literature has shown that, theoretically, holding-period returns of a leveraged exchange-traded fund (LETF) are generally negatively affected by the volatility of the underlying benchmark’s daily returns, particularly for long holding periods. However, recent empirical studies simulate LETFs’ returns using historical benchmark returns and report results that are not entirely consistent with the theoretical predictions, leading to the possibility that the distribution of real-world returns may have certain characteristics that influence the outcomes. In this paper, the authors examine how asymmetric volatility affects LETFs’ performance and provide detailed explanations for the behavior of the performance of LETFs under different market conditions.
Design/methodology/approach
The authors conduct simulation analyses on a +3x LETF and a −3x LETF based on historical S&P 500 stock index returns, with asymmetric volatility incorporated into the model.
Findings
By incorporating the asymmetric volatility effect, the simulation results suggest that, contrary to the theoretical predictions, higher volatility does not always lead to more negative impact on LETFs’ performance. Rather, the performance depends on the market conditions under which high volatility occurs. The findings therefore help reconcile prior theoretical predictions with reported empirical findings.
Originality/value
The analysis adds to the literature by incorporating the asymmetric volatility effect of stock returns in studying LETFs’ performance. The authors also provide detailed explanations for the behavior of LETFs’ returns and compounding effect under different market conditions, thus providing contexts to prior empirical results.
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Alexandra E. MacDougall, Zhanna Bagdasarov, James F. Johnson and Michael D. Mumford
Business ethics provide a potent source of competitive advantage, placing increasing pressure on organizations to create and maintain an ethical workforce. Nonetheless, ethical…
Abstract
Business ethics provide a potent source of competitive advantage, placing increasing pressure on organizations to create and maintain an ethical workforce. Nonetheless, ethical breaches continue to permeate corporate life, suggesting that there is something missing from how we conceptualize and institutionalize organizational ethics. The current effort seeks to fill this void in two ways. First, we introduce an extended ethical framework premised on sensemaking in organizations. Within this framework, we suggest that multiple individual, organizational, and societal factors may differentially influence the ethical sensemaking process. Second, we contend that human resource management plays a central role in sustaining workplace ethics and explore the strategies through which human resource personnel can work to foster an ethical culture and spearhead ethics initiatives. Future research directions applicable to scholars in both the ethics and human resources domains are provided.
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The purpose of this paper is to provide a brief review of three strands of the literature on exchange‐traded funds.
Abstract
Purpose
The purpose of this paper is to provide a brief review of three strands of the literature on exchange‐traded funds.
Design/methodology/approach
The paper starts with a review of the history of the growth of exchange‐traded funds and their characteristics. The paper then examines the key factors and findings of the existing studies on, respectively, the pricing efficiency, the tracking ability/performance, and the impact on underlying securities of exchange‐traded funds.
Findings
Although there has been a substantial amount of research conducted to advance our knowledge on the trading, management, and effect of exchange‐traded funds, the findings are still far from conclusive in addressing a number of research questions.
Practical implications
Investors and other market participants will find this review informative in enhancing the understanding of exchange‐traded funds.
Originality/value
By highlighting the general theme of the related research findings, the paper provides a systematic review of the existing literature that future researchers can utilize in developing their research agenda.
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John N. Walsh and Jamie O'Brien
While service scholars see modularisation as balancing the efficiency of standardisation with the value added through customisation the relationships between these concepts are…
Abstract
Purpose
While service scholars see modularisation as balancing the efficiency of standardisation with the value added through customisation the relationships between these concepts are under-theorised. In addition, although information and communication technologies can facilitate all three service strategies, the degree to which they codify service knowledge is not explicitly considered in the extant literature. The purpose of this paper is to develop and validate a model that examines service strategy trajectories by specifically considering the ICTs used and the degree of knowledge codification employed.
Design/methodology/approach
This study draws on three qualitative case studies of service departments of firms involved in cardiovascular applications, orthopaedic, spinal and neuroscience product development and information technology support. Data collection involved semi-structured interviews, document analysis and non-participant observation.
Findings
Findings show that ICTs were increasingly used to codify both standardised and customised services, though in different ways. For standardised services ICTs codified the service process, making them even more rigid. Due to the dynamic nature of customised services, drawing on experts' tacit knowledge, ICTs codified the possessors of knowledge rather than the service process they undertook. This study also identified a duality between the tacit development of customised services and modular service codification.
Research limitations/implications
The model is validated using case studies from three companies in the medical and information technology sectors limiting its generalisability.
Practical implications
The importance of considering the degree of tacitness or explicitness of service knowledge is important for service codification. The paper provides managers with empirical examples of how ICTs are used to support all three strategies, allows them to identify their current position and indicates possible future trajectories.
Originality/value
The papers main contribution is the development of a model that integrates the literature on service strategies with knowledge management strategies to classify service standardisation, customisation and modularisation in terms of both service orientation and degree of ICT codification.
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Andrei C. Miu, Mircea Miclea and Daniel Houser
Purpose – This chapter focuses on individual differences in anxiety, by reviewing its neurobiology, cognitive effects, with an emphasis on decision-making, and recent developments…
Abstract
Purpose – This chapter focuses on individual differences in anxiety, by reviewing its neurobiology, cognitive effects, with an emphasis on decision-making, and recent developments in neuroeconomics.
Methodology – A review and discussion of anxiety and decision-making research.
Practical implications – This chapter argues that by making the step from emotional states to individual differences in emotion, neuroeconomics can extend its neurobiological roots and outreach its current clinical relevance.
Value of chapter – This chapter contributes to the literature on individual differences in emotion and their effects on decision-making, which is increasingly important in mainstream behavioral economics and neuroeconomics.