A critical evaluation of the Aichi Biodiversity Target 11 and the Mediterranean MPA network, two years ahead of its deadline

2018 ◽  
Vol 225 ◽  
pp. 187-196 ◽  
Author(s):  
J. Amengual ◽  
D. Alvarez-Berastegui
2019 ◽  
Vol 1 (4) ◽  
pp. 1-9
Author(s):  
Joel Pattison

This article offers a critical evaluation of a purported diplomatic mission from Genoa to the Marīnid sultan of Morocco, Abū Yaʿqūb Yusuf (r. 1286–1307 CE). Ibn Abī Zarʿ, author of a famous chronicle known as the Rawḍ al-qirṭās, or “Garden of Pages,” recorded the arrival of the Genoese along with their impressive gift: a golden or gilded tree with singing birds. His inclusion of the episode in a narrative otherwise devoted to the deeds of the dynasty and history of Fez raises several interesting questions. How did the Genoese construct or acquire the tree? Why was the nature of this gift important, and what might have been the goals of the Genoese embassy in bringing such a costly object along? I propose that we understand the embassy and its inclusion in the narrative as part of a Marīnid desire to promote the dynasty as legitimate heirs of previous Islamic rulers. This desire made use of symbols of pious and wise kingship, including the mechanical marvel represented by the tree, which bore an impressive ideological pedigree in Islamic and Christian literary and representational traditions. For their part, the Genoese may have been motivated by a desire to repair relations with Abū Yaʿqūb damaged by the activity of Benedetto Zaccaria in the straits of Gibraltar. Taken as a whole, this brief but under-studied event suggests both the Mediterranean scope of this symbol of kingship and its use by medieval diplomats to achieve practical ends.


2009 ◽  
Vol 3 (1) ◽  
Author(s):  
Slavko Ciglenečki

The article discusses various examples of fortification in the area of the prefecture of Illyricum, extending from the Mediterranean Noricum and Dalmacia all the way to Epirus and Achaea, which are attributed to the Justinian period. For eastern Illyricum exist the extensive documents of Procopius, with partial descriptions of cities, settlements, and military fortifications, which require critical evaluation so establish an accurate insight into the extent of Justinian’s activities. Data of this type – with several small exceptions – do not exist for western Illyricum, but archaeological excavations and field surveys of the well-preserved architecture in the Mediterranean section have enabled dating of buildings and the renovation of numerous structures in the Justinian period. These significant changes in the settlement structure of late Antiquity can be characterized as the "kastronization" of settlements and territories and the "transition from polis to kastron". In the article the author attempts, in comparison with better known examples of fortification in eastern Illyricum cited in sources, to seek parallels in western Illyricum and to present the similarities and differences between them. The author will show the different categories of towns and their transformation, as well as the occasional defensive structures already dated in more detail to the Justinian period. For fortification in the area he will briefly delineate the state of research in the various regions of the prefecture of Illyricum, and for several better investigated examples display the fundamental characteristics of the construction of the military fortifications and settlements. In somewhat more detail will be presented the later defensive elements of fortifications in Dalmatia, Bosnia, Slovenia, and Austria. Several examples of lines of defensive barriers will also be noted.


Author(s):  
A. Lawley ◽  
M. R. Pinnel ◽  
A. Pattnaik

As part of a broad program on composite materials, the role of the interface on the micromechanics of deformation of metal-matrix composites is being studied. The approach is to correlate elastic behavior, micro and macroyielding, flow, and fracture behavior with associated structural detail (dislocation substructure, fracture characteristics) and stress-state. This provides an understanding of the mode of deformation from an atomistic viewpoint; a critical evaluation can then be made of existing models of composite behavior based on continuum mechanics. This paper covers the electron microscopy (transmission, fractography, scanning microscopy) of two distinct forms of composite material: conventional fiber-reinforced (aluminum-stainless steel) and directionally solidified eutectic alloys (aluminum-copper). In the former, the interface is in the form of a compound and/or solid solution whereas in directionally solidified alloys, the interface consists of a precise crystallographic boundary between the two constituents of the eutectic.


2006 ◽  
Vol 5 (1) ◽  
pp. 28-29
Author(s):  
M JIMENEZNAVARRO ◽  
J GOMEZDOBLAS ◽  
G GOMEZHERNANDEZ ◽  
A DOMINGUEZFRANCO ◽  
J GARCIAPINILLA ◽  
...  

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