This study takes into account the newly developed hybrid ARIMA-FIGARCH. We use daily price index of S&P 500. The data employed for this was secondary in nature all variables and obtained from publications Central Bank Nigeria Bulletin, National Bureau Statistics, World Statistics Database, dated January 2005 to December 2020. Also, result Jarque-Bera test indicated that p-values were less t...

The Arab Spring which began on 17 December 2010 with the civil rebellions, revolutionary wave of demonstrations and protests in the Tunisia, Egypt, Libya, Yemen, Bahrain and Syria. The Arab Spring not only created a domino effect between Arabic countries but also it reflected a significant influence on the financial markets all over the world. The objective of this study is to analyze the impac...

We report a newborn with exaggerated startle reactions and stiffness of neonatal onset, the prototypical signs of hyperekplexia. Startle and flexor spasms, leading to apnoea, did not respond to treatment with clonazepam but did partially to sodium valproate. Molecular analysis of GLRA1 revealed no mutations. The incidental finding of hypouricemia led to a work-up for molybdenum cofactor (MoCo) ...

BACKGROUND The aim of this study was to investigate the effect of the decreased level of thyroid hormones on selected parameters of the oxidation/reduction balance by assessing the activity of antioxidant enzymes: superoxide dismutase (SOD), and glutathione peroxidase (GSH-Px); the level of antioxidant vitamins (A, C, and E); and the concentration of compounds reacting with thiobarbituric acid ...

In a recent paper in The Journal of Monetary Economics, Michelacci and Zaffaroni (2000) estimate long memory parameters for GDP per capita of 16 OECD countries. In this note we argue that these estimations are questionable for the purposes of clarifying the time series properties of these data (presence of unit roots, mean reversion, long memory) because the authors a) filter out a deterministi...

Are structural breaks models true switching models or long memory processes? The answer to this question remain ambiguous. A lot of papers, in recent years, have dealt with this problem. For instance, Diebold and Inoue (2001) and Granger and Hyung (2004) show, under speci c conditions, that switching models and long memory processes can be easily confused. In this paper, using several generatin...

Special purpose high performance computers are expensive and rare, but workstation clusters are cheap and becoming common. Emerging technology offers the opportunity to integrate clusters into a single high performance computer a computational Grid. The acceptance of computational Grids, however, is seriously hampered by the difficulty of efficiently managing the parallelism in such heterogeneo...

Cadmium is a well recognized environmental pollutant with diverse toxicity in various organs of human and animals (IARC, 1993). Prolong cadmium exposures can cause lung fibrosis, kidney tubular dysfunction, hypertension, osteoporosis, cancer, etc. (Peters et al., 1986; Patra et al., 2011). The common sources of cadmium are combustion of coal, mining, smelters and contaminated phosphate fertiliz...

Sevoflurane is generally considered a pro-apoptotic agent in the neonatal brain. However, recent studies have suggested that low levels of sevoflurane anesthesia may be neuroprotective and have a memory enhancing effect. The present study aimed to investigate whether sevoflurane exerts a neuroprotective effect at subclinical concentrations, with regard to oxidative state. In the current study, ...