Browsing by Subject "Middle East"

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Access status: Open Access ,
A new empirical correlation for estimating bubble point pressure using the genetic algorithm
(Wydawnictwa AGH, 2017) Heidarian, Mohamad; Karimnezhad, Masoud; Schaffie, Mahin; Ranjbar, Mohammad
In this paper, a new and more accurate correlation to predict bubble point pressure (P$_{b}$) for Middle East crudes by using the genetic algorithm (GA) is attempted. For this purpose, a total of 286 data sets of different crude oils from Middle East reservoirs were used as training data for constructing the correlation. The general form of the correlation was found by several regressive examinations. To improve the correlation, the genetic algorithm was applied. To validate the correlation, 143 data sets of different crudes from Middle East reservoirs which were different from the training data were used as test data for calculating mean absolute relative error (MARE) and correlation coefficient (R$^{2}$) between the predicted values from the proposed correlation and the experimental values. In addition, the MARE and R$^{2}$ were calculated for previous correlation in the test data. The results show that the proposed correlation is more accurate than all of the previous correlations exclusively for Middle East crudes.
Access status: Open Access ,
Konrad Pędziwiatr, »Przemiany islamizmów w Egipcie i Tunezji w cieniu Arabskiej Wiosny«, Zakład Wydawniczy Nomos, Kraków 2019, 298 s.
(Wydawnictwa AGH, 2020) Wach, Dominik
The review concerns a monograph on the transformation of Islamic movements in Egypt and Tunisia and their politicization, in particular after the Arab revolutions (»Arab Spring«). The monograph presents an interdisciplinary approach to the discussed issues, but concentrates in particular on the achievements of social movement studies as well as studies of political Islam. The strength of the reviewed publication is also the analysis of the material obtained by the author during field research and interviews with the leaders of the Islamic movements and experts in the field of political Islam. Thanks to numerous fragments of interviews quoted in the book, as well as the publication of some of them selected in full, it aspires to enter the canon of publications about Islamism and broadly speaking policies in the Middle East and North Africa. Right balance between theory and practice further increases the attractiveness of the book.