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Does green technology innovation matter to the cost of equity capital?

Hatem RJIBA, Khaled Elmawazini, Imed Chkir, Fatma Mrad

Using a panel of U.S. public firms, we present the first evidence highlighting the relation between green technology innovation and cost of equity capital. Consistent with our prediction, we find that greater green technology innovation is associated with lower cost of equity capital.

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La quête de reconnaissance: un levier d’engagement pour l’apprentissage collaboratif.

Olivier MAMAVI, R. Zerbib
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Reliving a traumatic experience through emotional creativity: the bright side of cancer during the COVID-19 pandemic


Purpose – The COVID-19 outbreak has undoubtedly affected overall mental health. Thus, researching
resilience is important, as it has been previously discussed as a means to protect people from mental health

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Time-frequency causality and connectedness between oil price shocks and the world food prices

Khaled GUESMI, Fateh BELAID, Syed Ali RAZA, Nida SHAH

The goal of this study is to examine the food and oil price nexus from January 1993 to September 2020. To have a broader aspect, we decompose oil prices into demand and supply shocks and food price index into sub-indices such as Meat, Dairy, Cereal, and sugar price indices.

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Bayesian stochastic volatility predictability of cryptocurrencies with the algorithm of Metropolis Hasting


Identifying the factors driving the volatility
of asset classes and examine
their effect on financial markets is particularly
essential for investors, portfolio
managers, and regulators who
are concerned with the asset pricing

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Credit rating agencies, information asymmetry and US bond liquidity

Federica SALVADE, Stefano LOVO, Philippe RAIMBOURG

Do rating announcements reduce information asymmetries? We investigate the effect of rating disclosures on the volatility and liquidity of the US bond market.

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Do regulatory policies matter to corporate innovation?

Khaled GUESMI, Khaled Elmawazini, Gamal Aatallah, Rafiquzzaman Mohammed

This paper examines the relationship between regulation and innovation from both theoretical and empirical perspectives.