Background: Rainfall is the main source of water on earth’s surface. It infiltrates and percolates deep into soil for groundwater recharge. Rainfall patterns, amounts, durations, intensities can vary daily, monthly, annually, spatially. therefore important to accurately estimate rainfall return periods, which be employed in hydraulic design flood control measures.</n...

Copula functions have been extensively used to describe the joint behaviors of extreme hydrological events and to analyze hydrological risk. Advanced marginal distribution inference, for example, the maximum entropy theory, is particularly beneficial for improving the performance of the copulas. The goal of this paper, therefore, is twofold; first, to develop a coupled maximum entropy-copula me...

Article history: This paper explores whether the relevance of a conditional multifacReceived 12 July 2012 tor model and autocorrelation in predicting the Russian aggregate Received in revised form 2 October 2012 stock return fluctuates over time. The source of return predictability is Accepted 16 December 2012 shown to vary considerably with information flow. In general, Available online 22 Dec...

The purpose of this study is to test the validity CAPM in Amman Stock Exchange (ASE) during period (2010 – 2014), which was divided into three sub periods. We used monthly returns 60 stocks Jordanian companies listed ASE. Black, Jensen and Scholes (1972) Fama MacBeth (1973) methods were different sub-periods. analysis results showed that higher risk (beta) not associated with levels return, vio...

nowadays, increasing of greenhouse gases emissionscussed by human activities is the main factor of climate change. global warming has also changed the frequency of extreme rainfall events in many areas. this research presents an analysis of how the change in the frequency of maximum daily rainfall under three emission scenarios in 2021-2040 periods in the khorasan-razavi province. the maximum d...

Development of rural areas in rivers margins and flood plains, without understanding and attention to the dynamical and hydrological conditions and upstream areas of the rivers will cause to increase flood risk and loss of life and financial. Flood zoning has many applications, in floodplain management. For management of the three major branches of the Halilrood River, Rabor, Roodar and Javaran...

Determination of magnitude floods for various recurrence intervals at a point serves vital information to design any hydraulic structure, water resource managers in management water, preparedness with regard possible flood annihilation etc., An attempt has been made gauge the return period Kabini dam located H.D Kote, Mysuru subjecting collected inflow data 31 years frequency analysis. Three st...