A statistical methodology for detecting influential observations in long-memory models is proposed. The identification of these influential points is carried out by case-deletion techniques. In particular, a Kullback–Leibler divergence is considered to measure the effect of a subset of observations on predictors and smoothers. These techniques are illustrated with an analysis of the River Nile ...

In recent years a great deal of research efforts in ship hydromechanics have been devoted to practical navigation problems in moving larger ships safely into existing harbors and inland waterways. An area of particular concern is the prediction of ship squat in shallow or restricted waters at different speeds. Squat may cause grounding of the ship which result in severe damage to the ship, and ...

The study aimed to assess concentrations of heavy metals in soil samples on both sides along the three Niles (Blue, White, and Nile Rivers) Almogran area (Tuti Island) Khartoum city (the capital Sudan country) after overflow season. Concentrations Br, Cu, Ni, Pb, Co, Rb, Cr, Zn, Zr, Sr, Mn, Ti, K, Ca, Fe were determined using Xray fluorescence (XRF) techniques compatible with direct analysis s...

to be quite compatible with the original analytical scheme. Incidentally, El-Attar and Jackson (1973) have observed considerable thermal decomposition at 550~ of Fe-rich layers and/or interlayers in montmorillonitic soils of Nile River alluvium. Additional information that can be deduced from the above procedure is the CEC and K § -fixation capacity of the amorphous constituents of the clays pr...

Acanthogyrus (Acanthosentis) tilapiae parasites were collected from the intestines of 300 fish belonging to three tilapia species sourced at the River Nile, Giza, Egypt. The proboscis of the parasite was characterized by three rows of hooks that curved towards the posterior of the body. The first row is supported by unmodified hooks. The parasite tegument has a series of alternative folds and a...

The paper presents an approach to the analysis of data that contains (multiple) structural changes in a linear regression setup. We implement various strategies which have been suggested in the literature for testing against structural changes as well as a dynamic programming algorithm for the dating of the breakpoints in the R statistical software package. Using historical data on Nile river d...

The Yale University Prehistoric Expedition to Nubia was part of UNESCO'S international program to salvage the monuments of Nubia, with the direct aid of the Department of Antiquities of the United Arab Republic. The Yale Prehistoric Expedition worked in Upper Egypt and Egyptian Nubia for three field seasons during 1962-1965 inclusive (Reed, 1966). My own participation was limited to the last se...