Unit hydrographs (UH) are either determined from gauged data or derived using empirically-based synthetic unit hydrograph procedures. In Saudi Arabia, the discharge records may not be available either for several locations or for long time scales, and therefore synthetic unit hydrographs are crucial in flood and water resources management. Available metrological, geological, and land use datase...

This study explicitly rejects the prima facie proposition that top-tier investment banks are capable of delivering supernormal value creation to shareholders a REIT acquirer in corporate acquisition. Using event method, we find acquirers advised by market-leading suffer an average cumulative abnormal return −4.41% following M&A announcement, whereas non-top-tier only −1.49%. The evidence sh...

rock has been advantageously employed in hydraulic structures such as rockfill dams, gabion weirs and drain works. one rockfill dam applications can be flood control in wa-tershed management. the objectives of building rockfill detention dams are flow storage for a specific period and lowering of the outflow hydrograph. as this type of dam consists of coarse particles, seepage flow will deviate...

The purpose of this research is to test the efficiency of market with respect to announcements of mergers and acquisitions using an event study methodology. Specifically, this study analyzed the effects of banks mergers and their announcements on the prices of stocks, in Europe. We study 18 deals that involve banks in Merger and Acquisition from year 2001 to 2010 in order to investigate the ret...

When bidders in a corporate takeover have related resources and post-acquisition strategies, their valuations of a target are likely to be interdependent. This paper analyzes a theoretical model and a laboratory experiment of sequential-entry takeover contests in which similar acquirers have correlated private valuations. Increased similarity between bidders has two effects on equilibrium biddi...

land use change is one of the main factors in the process of changing the regime of flood in watersheds. taleghan watershed has been subjected to many land use changes over years, which probably effects on flood characteristics of taleghan river. in present study the effects of land use change on some parameters including peak flow, volume and flood base time, in part of taleghan basin, was inv...

[1] Land surface hydrologic models are commonly evaluated based upon the degree of correspondence between measured and modeled discharge. In this paper we illustrate significant shortcomings associated with the simple discharge based evaluation strategy. A standard conceptual hydrologic model is applied within a Monte Carlo framework to two catchments representing significantly different hydrol...

The movement of water flow usually has history and path dependence. Fractional calculus is very suitable for describing the process with memory hereditary properties. In this study, order differential equation in Nash confluence system was extended from integer to fractional order. On basis Laplace transform, instantaneous unit hydrograph obtained, which used describe long-term basin system. Fu...

Increasingly, companies are drawing on capacities provided by external consultants to design and execute strategic IT initiatives. However, despite evidence of the impact of such services on IT performance, little is still known about the roles external consultants serve in relation to specific strategic IT initiatives and how companies can draw effectively on their services. This paper investi...