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Hikama (Governance) is a peer reviewed academic journal published by the Arab Center for Research and Policy Studies and Doha Institute for Graduate Studies (p-ISSN: 2708-5805), (e-ISSN: 2708-5813). Hikama seeks to broaden the understanding of the fields of public policy and public administration in the Arab World and reinvigorate the political and social elements of public policy. It is a space for academic thought and discussion on what Arab governments - with their values, institutions, and public bodies - are doing, and should aspire to do in order to nurture politically modern and socially just Arab societies. -- AHMED MOHSEN Doctoral candidate, Faculty of Political Science and International Relations, Sabahattin Zaim University, Turkey. Email: abdelrahman.ahmed@std.izu.edu.tr ; تحاول هذه الدراللسة الإجابة عن اللسؤال التالي: لماذا اختلفت الستجابة الأجهزة البيروقراطية والتنفيذية عند تصميم اللسياسات الصحية وتنفيذها تجاه أزمة جائحة فيرولس كورونا المستجد (كوفيد19) في دول تبدو متشابهة، كونها تملك ميراثا من المركزية والأنظمة الرئالسية، كما همي الحال في مصر وتركيا؟ وتنطلق فرضية الدراسة الرئيسة من أن الأزمة في بدايتها أعطت ملساحة أكبل للوزراء التنفيذيين والتكنوقراط والأجهزة البيروقراطية المتخصطة فمي اللسيالسات الطحية والوبائية للمساهمة بشكل أكبر فمي 'لاكلملم اللسياسات الطحية لمواجهة هذا الوباء، لكن الستمرار هذه الملساحة والستكمال تلك الأدوار ارتبط بعد ذلك بمدم توافر "القدرة السياساتية" التي تتيح لهؤلاء المسؤولين ذلك. تظهر الدراسة من خلال دراسة الحالة التركية والمصرية بصورة مقارنة، أنه كلما كانت الدولة أكثل مركزية، وكانت للأزمة التمي تواجهها طبيعة خاطة وغير مسبوقة، ولديها فمي الوقت نفسه قدرات سياساتية أعلل فمي تصميم السياسات، فإن هذا يساهم فمي تعزيز دور الخبراء والبيروقراطيين في تطميم اللسيالسات عل حلساب اللسيالسيين. ; This paper seeks to answer the following question: Why have the bureaucracies and executive arms of two highly centralized presidential regimes – Egypt and Turkey – produced such different responses to the Coronavirus crisis? Its basic hypothesis is that while the crisis did initially provide scope for ministers, technocrats and bureaucrats specialized in public health to play a greater part in making health policy, their ability to maintain this newfound influence depended on their "policy capability". Through a comparison of the two case studies, this article shows that the more centralized a state is, the more unprecedented the crisis is and the more policy capability it has, the greater the role bureaucrats play at the expense of politicians.

The improvement of irrigation systems in the Nile Delta is one of the most important attempts in Egypt to implement more effective irrigation technology by improving the existing irrigation networks. Demand delivery system in the existing irrigation network is using of mechanical gates structures to automatically divert water from one portion of an agricultural field to another in the desired amount and sequence. This paper discusses evaluating main irrigation networks system under the government managed before and after improvement systems in the Nile Delta. The overall results indicate that policy of using the demand delivery concept through irrigation networks is successful by improving water delivery performance among them than the rotation delivery concept that used before. It is provided fair share of water delivery among irrigation districts and available water in the end of irrigation network, although this system located in an end of irrigation networks in the Nile Delta.

The study dealt with (4) stations distributed along the Shatt Al-Arab, namely Al-Mashab, Al-Ashar, Abu Al-Khasib and Al-Faw. Samples were collected monthly over a whole year, starting from January 2012 until December of the same year to estimate and diagnose the n - alkanes in them using Gas Chromatography (GC) . The highest recorded concentrations were (154.92 , 167.34 , 104.56 , 191.00 ) µg/l in the stations ( Al - Mshab , Al - Ashar , Abu Al - Khasib and Al - Faw ) respectively during the month of December . The lowest recorded concentrations were (4.79, 5.46, 3.34, 5.00) µg/l in the same stations, respectively. In terms of seasonal changes, the results showed that the highest rate of normal alkanes was recorded during the winter months and the lowest during the summer months. As for the results of the evidence of the Carbon Preference Index (CPI )and the ratio of Pr/Ph compounds (Pristan / Phytan) it was more than one in some months and less than one in other months, which indicates the common sources of hydrocarbons in the water.

AbstractDespite the substantial impact of rivers on the global marine litter problem, riverine litter has been accorded inadequate consideration. Therefore, our objective was to detect riverine litter by utilizing middle-scale multispectral satellite images and machine learning (ML), with the Tisza River (Hungary) as a study area. The Very High Resolution (VHR) images obtained from the Google Earth database were employed to recognize some riverine litter spots (a blend of anthropogenic and natural substances). These litter spots served as the basis for training and validating five supervised machine-learning algorithms based on Sentinel-2 images [Artificial Neural Network (ANN), Support Vector Classifier (SVC), Random Forest (RF), Naïve Bays (NB) and Decision Tree (DT)]. To evaluate the generalization capability of the developed models, they were tested on larger unseen data under varying hydrological conditions and with different litter sizes. Besides the best-performing model was used to investigate the spatio-temporal variations of riverine litter in the Middel Tisza. According to the results, almost all the developed models showed favorable metrics based on the validation dataset (e.g., F1-score; SVC: 0.94, ANN: 0.93, RF: 0.91, DT: 0.90, and NB: 0.83); however, during the testing process, they showed medium (e.g., F1-score; RF:0.69, SVC: 0.62; ANN: 0.62) to poor performance (e.g., F1-score; NB: 0.48; DT: 0.45). The capability of all models to detect litter was bounded to the pixel size of the Sentinel-2 images. Based on the spatio-temporal investigation, hydraulic structures (e.g., Kisköre Dam) are the greatest litter accumulation spots. Although the highest transport rate of litter occurs during floods, the largest litter spot area upstream of the Kisköre Dam was observed at low stages in summer. This study represents a preliminary step in the automatic detection of riverine litter; therefore, additional research incorporating a larger dataset with more representative small litter spots, as well as finer spatial resolution images is necessary.

This edited volume conceives of International Relations (IR) not as a unilateral project, but more as an intellectual platform. Its contributors explore Islamic contributions to this field, addressing the theories and practices of the Islamic civilization and of Muslim societies with regards to international affairs and to the discipline of IR. (Publisher's description)