Sultans' Paradise: The Royal Necropolis of Shāla,Rabat

The following study concerns Shāla, which was the necropolis of the Marīnid rulers from 683/1284 to 752/1351. The Islamic buildings on the site have rarely received scholarly attention, although these edifices – despite their delapidated condition – are among the most important constructed by the dynasty. One of my main aims is to re-establish the buildings' chronological sequence, using the written and archaeological evidence, including publications about the site written in Arabic, which have hardly been considered so far. I also address the meaning and aims behind structure erected for each founder, which, in my view, have been misinterpreted by previous scholarship. In summary, this article attempts to revise our knowledge about the site.     

The Unratified Treaty between the Mamlūks and the Franks of Acre in 1268

In 1268, after negotiations with Baybars, King Hugh III rejected several of the sultan's terms and did not take the oath to confirm a truce. Baybars' biographer underplayed the refusal, claiming that Hugh's fear of Charles of Anjou prevented him from making a truce. Based on historical and archaeological evidence, this study draws the borders with the Mamlūks and the inner borders between the Frankish regions in 1268, 1272 and 1283, proving that the Frankish areas in 1268 were reduced to almost half of those that obtained in 1272 and 1283. Thus, this study assumes that Hugh could not have take the oath on terms that, inter alia, reduced the Frankish area to an unacceptable size. The Franks seem to have controlled more territory than they were given in the proposed 1268 treaty and it seems that Baybars' lack of interest in an attack on Acre encouraged the king to reject the truce.     

Western Medicine for the Masters of Damascus: Benvenutus Grapheus's Experimenta

This article examines a rediscovered work by the thirteenth-century physician Benvenutus Grapheus de Iherusalem. Surviving only in a late medieval German translation, it contains select recipes and medical procedures. The study of this compilation offers new insight into two important aspects of Benvenutus's life: It provides a more precise dating for his activities, and clarifies at least one facet of his connection to the Levant. An analysis of Benvenutus's sources, most notably the Antidotarium Nicolai but also the Circa instans, confirms the assumption of previous scholars that he had studied at the Salernitan school of medicine. This article also shows that, at least in this particular case, practitioners trained within the Arabic medical tradition did not view Western medicine as a priori inferior.     

Fāṭimid Alexandria as an Entrepôt in the East–West Exchange of Islamic Scholarship

Abstract

The arrival in Alexandria of al-?ur?ūshī from Spain and al-Silafī from Iran and the settling there of both early in the sixth/twelfth century created a nucleus of Sunni learning that grew into a full-blown renaissance. Many additional scholars participated, either as students and colleagues of these two, or on their own. As one result, the city itself became, over the first half of that century, a noted entrepôt for the east–west exchange of scholarship in the Muslim world, and all this despite the core Shi‘ism of the Fā?imid dynasty that controlled Egypt, including Alexandria. This renaissance in fact continued to flourish until the Fā?imids were finally supplanted in 567/1171 by the Ayyūbids, a full two decades into the second half of the same century, at which time Cairo became once again a major centre of Sunnism.     

A Comparison of Method Effects in Two Confirmatory Factor Models for Structurally Different Methods

It is well known that measurement error in observable variables induces bias in estimates in standard regression analysis and that structural equation models are a typical solution to this problem. Often, multiple indicator equations are subsumed as part of the structural equation model, allowing for consistent estimation of the relevant regression parameters. In many instances, however, embedding the measurement model into structural equation models is not possible because the model would not be identified. To correct for measurement error one has no other recourse than to provide the exact values of the variances of the measurement error terms of the model, although in practice such variances cannot be ascertained exactly, but only estimated from an independent study. The usual approach so far has been to treat the estimated values of error variances as if they were known exact population values in the subsequent structural equation modeling (SEM) analysis. In this article we show that fixing measurement error variance estimates as if they were true values can make the reported standard errors of the structural parameters of the model smaller than they should be. Inferences about the parameters of interest will be incorrect if the estimated nature of the variances is not taken into account. For general SEM, we derive an explicit expression that provides the terms to be added to the standard errors provided by the standard SEM software that treats the estimated variances as exact population values. Interestingly, we find there is a differential impact of the corrections to be added to the standard errors depending on which parameter of the model is estimated. The theoretical results are illustrated with simulations and also with empirical data on a typical SEM model.     

基于AVR单片机的8*8*8三维LED点阵设计

针对8*8*8三维LED点阵显示模块控制问题,提出一种基于AVR单片机的8*8*8三维LED点阵设计方案。介绍三维LED点阵显示模块和控制系统的构成,根据三维LED点阵显示模块进行文字或图案显示的功能需求,合理选择驱动电路,划分ATMEGA328P-PU内部算法进行控制,并利用ATMEGA328P-PU内部特殊功能,添加外部扩展接口,结合上位机通讯,实现一个较为完善的综合信息显示平台。光立方提供了良好的用户视觉与娱乐体验,为进一步研究三维显示器的制作及控制提供一定的参考。     

Coptic Language and Identity in Ayyūbid Egypt1

Abstract

In the late Fā?imid and Ayyūbid periods of Egyptian history, Coptic Christians finally addressed the reality that most of their community no longer understood the Coptic language but were, in fact, losing their communal identity and “figures of memory” to Arabisation and even Islamisation. A Coptic-Arabic “Renaissance” ensued whereby Coptic liturgy, theology and history were translated into Arabic, the lingua franca by this time of the Coptic populace. This creative energy extended into the artistic realm – such as iconography and painting – and ultimately strengthened the identity of the Coptic community as their situation became increasingly more restricted.     

Egyptian Coarse Ware in Early Islamic Palestine: Between Commerce and Migration

This study offers a critical re-evaluation of chronological aspects and distribution patterns concerning two main types of Egyptian coarse ware (Red-Brown Ovoid Amphorae and Coarse Ware Basins) identified in Early Islamic assemblages (eighth to tenth centuries AD) in Palestine. While the distribution of Egyptian amphorae is explained in socio-economic terms as reflecting normal trade relations, the appearance of Egyptian coarse ware basins in a limited number of local assemblages may imply the actual presence of Egyptian migrants (merchants or soldiers).     

Material Worlds: The Shared Cultures of Southern Italy and its Mediterranean Neighbours in the Tenth to Twelfth Centuries

As scholars of people's physical environments, we tend to view the past according to our own forms of categorisation rather than those of contemporaries. From a medieval Mediterranean perspective, the fragmentation of scholarship caused by modern disciplinary constraints—Islamic, Byzantine, Western—has artificially set apart cultures which had more in common than has hitherto been acknowledged. This is a comparative study of the dress and textile cultures of southern Italy, particularly Apulia, Egypt and the Fatimid Caliphate and regions in the Byzantine Empire, as recorded in dowries, wills and other documents. This article also demonstrates how using the Mediterranean as a framework for comparison allows us to identify new areas where cultural differences really lay.