In this paper, we compare the performance of volatility models for oil price using daily returns of WTI. The innovations of this paper are in two folds: (i) we analyse the oil price across three sub samples namely period before, during and after the global financial crisis, (ii) we also analyse...

This paper models returns and volatility transmission between oil price (OP) and US–Nigeria exchange rate (EXR). Consequently, it provides five main innovations: (i) it analyzes OP and EXR using the recently developed test by Narayan and Popp (2010) (NP) which allows for two structural breaks...

In this paper, we provide two main innovations: (i) we analyze oil prices of two prominent markets namely West Texas Intermediate (WTI) and Brent using the two recently developed tests by Narayan and Popp (2010) and Liu and Narayan, 2010 both of which allow for two structural breaks in the data...

This paper estimates the determinants of bilateral trade flows between UEMOA members and other countries in the ECOWAS region. It also estimates the trade effects of UEMOA using a more simplified Vinerian type gravity model. Further, country-specific analysis was conducted to evaluate any...

This paper estimates the trade effects of WAMZ between 2005 and 2010 using the gravity model. In addition, it also estimates the determinants of bilateral trade flows in WAMZ countries. The paper finds that WAMZ has been trade diverting although country specific analysis reveals that individual...

In this paper, we extend the work of Hamori (2008) to include three main innovations: (i) we consider an open economy version of money demand which is more representative for small open economies like those in SSA; (ii) we consider both the homogenous and heterogeneous panel cointegration methods...

The surface of La1/3Ca2/3MnO3 (LCMO) films with thickness, t, ranging from 4 to 150 nm has been studied. Highly ordered palpus-like crystals induced by strain are observed in the films grown on the substrate of SrTiO3 (with thickness t ranging from 20 to 50 nm) and on sapphire (with thickness t...

Effects of Si3N4 passivation layer on the lattice strain of Al0.22Ga0.78N layer with the thickness of 100 nm has been studied by in situ X-ray diffraction by the temperature range of 25°C–550°C. Results show that the temperature dependence of the strain relaxations can be separated into...

Oil-related events have increased the uncertainty and complexity of the worldwide oil market. This paper investigates the effects of four types of oil-related events on world oil prices, using an event study methodology and an AR-GARCH model. The Internet information concerning these events,...

Human behaviour on the Internet has become a synchro-projection of real society. In this paper, we introduce the public concern derived from query volumes on the Web to empirically analyse the influence of information on commodity markets (e.g., crude oil, heating oil, corn and gold) using...