Extension of the Technology Acceptance Model: Four Longitudinal Field : .

Digital technology has changed organizations in an irreversible way. Like the movable type printing accelerated the evolution of our history, digitalization is shaping organizations, work environment and processes, creating new challenges leaders have to face. Social science scholars have been trying to understand this multifaceted phenomenon, however, findings have accumulated in a fragmented and dispersed fashion across different disciplines, and do not seem to converge within a clear picture. To overcome this shortcoming in the literature and foster clarity and alignment in the academic debate, this paper provides a comprehensive analysis of the contribution of studies on leadership and digitalization, identifying patterns of thought and findings across various social science disciplines, such as management and psychology. It clarifies key definitions and ideas, highlighting the main theories and findings drawn by scholars. Further, it identifies categories that group papers according to the macro level of analysis (e-leadership and organization, digital tools, ethical issues, and social movements), and micro level of analysis (the role of C-level managers, leader's skills in the digital age, practices for leading virtual teams). Main findings show leaders are key actors in the development of a digital culture: they need to create relationships with multiple and scattered stakeholders, and focus on enabling collaborative processes in complex settings, while attending to pressing ethical concerns. With this research, we contribute to advance theoretically the debate about digital transformation and leadership, offering an extensive and systematic review, and identifying key future research opportunities to advance knowledge in this field.

/pdf/the-role-of-leadership-in-a-digitalized-world-a-review-2qpn5ym6ae.pdf

The Role of Leadership in a Digitalized World: A Review.

/pdf/how-strong-are-the-causal-relationships-between-islamic-4uxuum1026.pdf

How strong are the causal relationships between Islamic stock markets and conventional financial systems? Evidence from linear and nonlinear tests

Past studies have shown considerable differences between equity markets in conventional and Islamic financial systems, in terms of financial products and principles. Using a copula approach, this study shows that the global Islamic equity market index (represented by the Dow Jones Islamic Market Index) exhibits significant dependence with three major global conventional equity indices (Asia, Europe, and United States) and the global factors (oil prices, stock market implied volatility (VIX), the U.S. 10-year Treasury bond interest rate, and the 10-year European Monetary Union government bond index) which are common to the world financial system and pertinent to contagion risks in the case of financial crises. Moreover, this dependence varies over time for all cases except the S&P 500 index and is also asymmetric between bear and bull markets in some cases. Our findings thus suggest that the Sharia-compliance rules are not restrictive enough to make the global Islamic equity market index very different from the conventional indices. In addition, the decoupling hypothesis of the Islamic equity universe from the conventional financial system is not well supported by our empirical evidence.

Dynamic dependence of the global Islamic equity index with global conventional equity market indices and risk factors

The Great Financial Crisis: Causes and Consequences

Conventional and Islamic stock price performance: An empirical investigation ☆

Does Islamic finance constitute a promising solution for the current global financial crisis and are Islamic financial innovations enough to reassure investors, stabilize financial systems and provide them with a means of escaping from financial downturns? This article addresses these questions while investigating the dynamics of Islamic and conventional stock prices over the last few years. In particular, we apply Multivariate Vector Autoregressive (VAR) tools to test the interaction between conventional and Islamic financial products, and implement the Granger causality test to specify the dependence orientation of feedback between Islamic and conventional stock prices. Our article differs from previous work on the topic in that it develops portfolio simulations to determine whether Islamic finance can supplant conventional finance by generating investment and diversification opportunities during periods of crisis. In addition, we develop optimal portfolio strategies and investment proportions for conve...

Are Islamic finance innovations enough for investors to escape from a financial downturn? Further evidence from portfolio simulations

This article investigates the weak-form informational efficient hypothesis for three major Islamic stock markets (world, emerging and developed). Unlike previous studies, we applied different parametric and nonparametric tests to investigate efficiency in the short and long horizons. Using recent data over the period May 2002–June 2012, we developed a time-series analysis of Islamic stock price dynamics in the context of the recent global financial crisis (2008–2009). Our analysis offers two interesting results. First, emerging Islamic stock markets seem to be less efficient than developed Islamic markets, suggesting interesting investment opportunities and diversification benefits from this region in both the short run and the long run. Second, nonrejection of the cointegration hypothesis for developed Islamic markets and the global conventional stock market point to efficiency for the former in the long term, even if it is inefficient in the short term. This finding has at least two economic and politic...

Are Islamic stock markets efficient? A time-series analysis

This study compares two types of banks: conventional banks and Islamic banks. Indeed, since the aftermath of the credit crunch and the global financial crisis (2008–2009), the former have been severely criticized, while the latter are increasingly considered as an alternative form of banking. From a panel sample of twenty major banks (ten conventional banks and ten Islamic banks) located in various developed and emerging countries over the period April 2006- February 2013, the present paper examines whether or not there are significant differences between the two banking systems. Our sample enables us to compare these international banking systems, taking the crisis impact and new regulations and supervisory rules into account. To this effect, we carried out econometric analyses of univariate and multivariate panel data, which pointed to two interesting findings. First, there are only a few significant differences between IBs and CBs in terms of financial risk. Second, PVAR (Panel Vector Autoregressive) estimates and the analysis of Impulse Response Functions (IRFs) indicate weak interactions between IBs and CBs, while panel causality tests reject the causality hypothesis from IBs to CBs.

Nabila Jawadi

Papers

Conventional and Islamic stock price performance: An empirical investigation ☆

Are Islamic finance innovations enough for investors to escape from a financial downturn? Further evidence from portfolio simulations

Are Islamic stock markets efficient? A time-series analysis

Do Islamic and Conventional Banks Really Differ? A Panel Data Statistical Analysis

A statistical analysis of uncertainty for conventional and ethical stock indexes