Medieval Arab Contributions to Optics

The year 2015 was the United Nations’ International Year of Light and Light‐based Technologies. The year long activities created a forum for scientists and engineers and all others inspired by light, to interact with each other and with the public so as to learn more about the nature of light and its many applications. It was also a time to promote and celebrate the Medieval Arab contributions to optics. The year 2015 marked the 1000th anniversary of the seven volume encyclopedia on optics written by the great Arab scientist, Ibn al‐Haytham. Here, we present the Medieval Arab achievements in optical sciences and its impact on the European renaissance.     

Was the Revolution Tweeted? Social Media and the Jasmine Revolution in Tunisia

Tunisia's Internet freedom prior to the “Jasmine Revolution” that overthrew longtime authoritarian leader Zine el‐Abidine Ben Ali has been described as roughly on par with that of China. Despite that, Tunisia's revolution has been described as one of the first “Twitter” or Internet revolutions, in which Internet technologies are said to have played a significant role This article illuminates how Internet technologies were (and weren't) used in challenging the Ben Ali regime. Based on interviews with Tunisian activists in early 2013, the research sheds light on Internet activities bridging street activism and Internet dissent. Whether through Internet or traditional face‐to‐face means, building the capacity to mobilize street protests long before mass mobilization was crucial to Tunisia's successful revolution.     

The Post Arab Spring Reform: The Maghreb at a Cross Roads

The Arab Spring, which was launched in Tunisia, took the Arab Middle East by storm. Its results, to varying degrees, have been felt in every country in the region. In the Maghreb, three scenarios have been unfolding. Tunisia has seen the greatest changes with the country maneuvering its transition to democracy. Algeria — whose aims have not necessarily been a genuine transition to democracy, but to keep the status quo — has continued its process of reforms that started almost three decades ago. In Morocco, the leadership has used the Arab Spring to initiate a series of incremental reforms to further open up the political space, in a more controlled fashion.     

The Arab Spring: A Fourth Wave of Democratization?

Between 1974 and 1990, over 30 countries in southern Europe, Latin America, some parts of Asia, Eastern Europe, and Africa made transitions to democracy, nearly doubling the number of democratic governments in the world. Samuel Huntington described this global shift as “Democracy's Third Wave” in an article published in 1991, which was later developed in a book titled The Third Wave: Democratization in the Late Twentieth Century. In these two works, he discusses the causes, features, and transition processes of the third wave of democracy and examines its prospects for sustainability and possible expansion in a nondemocratic world. He argues that the first and second democratic waves “were followed not merely by some backsliding but major reverse waves during which most regime changes throughout the world were from democracy to authoritarianism” (Huntington, 1991a). He also addresses the causative factors of this reverse wave in some countries, and he claims that the third wave of democratization that swept the world in the 1970s and 1980s might become a dominant feature of Middle Eastern and North African politics in the 1990s. The delay in this prophecy for two decades motivates us to question whether the Arab Spring is part of Huntington's third wave of democratization or a new fourth wave of democratization, or even a false start to democracy, as described by Larry Diamond ( 2011 ). The purpose of this article is to examine the causes, features, and transition processes of the Arab Spring in Tunisia, Egypt, Libya, and Yemen in correlation with Huntington's theorization on the third wave of democratization which, along with other available literature in the field, will be combined in a theoretical framework that will enable us to discuss the abovementioned elements of the Arab Spring through the lens of the third wave of democratization. Special attention is paid to the question of whether the Arab Spring falls into the framework of Huntington's theory, or whether it can be classified as a new fourth wave of democratization in countries that have unfavorable environments for democracy. The first part of this article highlights the causative factors that eased the emergence of the third wave of democratization in different parts of the world. The second part provides a historical overview of the major events of the Arab Spring in Tunisia, Egypt, Libya, and Yemen, while the third and fourth parts analyze the causes, features, and transition processes of the Arab Spring from Huntington's third wave perspective.     

Reconsidering Elitist Duality: Persistent Tension in the Turkish–Egyptian Relations

Since the Muslim Brotherhood's ouster in July 3, 2013, tension has escalated between Turkey and Egypt and gained media attention as an unprecedented incident in bilateral relations. However, disagreement has characterized bilateral relations since the declaration of the Egyptian Republic and the launch of diplomatic relations with Turkey in the 1950s. By tracking the history of both countries’ bilateral relations, this study contends that, according to the elitist duality thesis, Turkish – Egyptian relations were an exception to the Turkish – Arab relations, as they were not influenced by the ruling elite. It argues that regardless of the ruling elite identity, tension has disrupted the normal course of relations. By relying on extensive interviews conducted with members of the Justice and Development Party, and academicians and staff members in the Turkish ministries of economy and foreign affairs, the study analyzes the unaddressed tension in the Turkish – Egyptian relations since the 1950s until 2013 and provides policy recommendations to improve bilateral relations.     

Detection of diffusion and contact zones of early farming in Europe from the space-time distribution of 14C dates

The spread of early farming in Europe is revisited using a sample of 3072 audited 14C calBC dates from 940 georeferenced early Neolithic sites. The surface expansion of early Neolithic has been reconstituted using the kriging technique of spatial interpolation. Centres of renewed expansion, of contact zones, and the main routes of expansion have been highlighted by means of a vector map, representing the gradient. The expansion of the agricultural system on the map, was not uniform and regular across Europe as a whole, but proceeded in leaps. With the scale of detection of the 500-year isochrones, several leaps are identifiable: at 8000 calBC crossing the Taurus barrier, 6700–6100 calBC crossing the southern Adriatic barrier, 6100–5600 calBC crossing the Central European agro-ecological barrier and 5000–4000 calBC expanding on the other, marginal zones. Using a vector map, 10 points of renewed expansion and nine contact zones, were detected. The whole does not correspond to a process of homogeneous diffusion, approximately steady, but a process marked by phases of geographical expansion and stasis.