Adama University

About: Adama University is a education organization based out in Nazrēt, Ethiopia. It is known for research contribution in the topics: Population & Adsorption. The organization has 840 authors who have published 1010 publications receiving 5547 citations. The organization is also known as: Adama Science and Technology University & ቴክኖሎጂ ዩኒቨርሲቲ, አዳማ ሳይንስና ቴክኖሎጂ ዩኒቨርሲቲ.

Quadratically convergent algorithm for computing real root of non-linear transcendental equations.

Abstract: The present paper describes a new algorithm to find a root of non-linear transcendental equations. It is found that Regula-Falsi method always gives guaranteed result but slow convergence. However, Newton–Raphson method does not give guaranteed result but faster than Regula-Falsi method. Therefore, the present paper used these two ideas and developed a new algorithm which has better convergence than Regula-Falsi and guaranteed result. One of the major issue in Newton–Raphson method is, it fails when first derivative is zero or approximately zero. The proposed method implemented the failure condition of Newton–Raphson method with better convergence. Error calculation has been discussed for certain real life examples using Bisection, Regula-Falsi, Newton–Raphson method and new proposed method. The computed results show that the new proposed quadratically convergent method provides better convergence than other methods.

Sea-level changes in the Paleocene (Danian–Thanetian) succession at the Dakhla Oasis, Western Desert, Egypt: implications from benthic foraminifera

Abstract: The Danian–Thanetian benthic foraminiferal assemblages at the Gharb El-Mawohb section in the Dakhla Oasis of Western Desert (Egypt) are inferred in combination with characteristic species, genera distribution, Benthic Foraminifera Numbers (BFN), species diversity, and abundance of high flux-species to infer prevailing paleoenvironment, paleoproductivity and paleobathymetry vis-a-vis sequence stratigraphy, regional tectonics, climate and changes in sea-level. The response of benthic foraminiferal assemblages to sea-level changes during boundary successions, namely the Danian/Selandian (D/S) and the Selandian/Thanetian (S/Th) is also analyzed. Data suggests a remarkably highly equitable environment throughout the studied interval. Eighty eight percent of the data plot in the restricted littoral environment (mostly in brackish and some in normal lagoons) suggesting that the fauna are not stressed despite a largely shallow depositional setting (middle to outer neritic, at places upper bathyal). The dominance of calcareous taxa indicates a largely open marine condition, in a largely oxic and oligotrophic environment, except in the late Paleocene where high-organic-flux species suggest increased paleoproductivity possibly due to local upwelling. The end of Zone P2 marks the deepest part of the studied section (outer neritic to upper bathyal) followed by gradual shallowing across the section (inner to middle neritic), with intermittent deepening in the middle of Zone P3a and P3b (middle neritic). There is shallowing at the transitions of Zones P3a, P3b and P4 (inner neritic). The changes in the vertical facies and benthic foraminiferal assemblage at the D/S and S/Th boundaries are analyzed.