Spectral gamma-ray logs and palaeoclimate change? Permian – Triassic, Persian Gulf

Spectral gamma ray (SGR) logs are used as stratigraphic tools in correlation, sequence stratigraphy and most recently, in clastic successions as a proxy for changes in hinterland palaeoweathering. In this study we analyse the spectral gamma ray signal recorded in two boreholes that penetrated the carbonate and evaporate-dominated Permian–Triassic boundary (PTB) in the South Pars Gasfield (offshore Iran, Persian Gulf) in an attempt to analyse palaeoenvironmental changes from the upper Permian (Upper Dalan Formation) and lower Triassic (Lower Kangan Formation). The results are compared to lithological changes, total organic carbon (TOC) contents and published stable isotope (δ18O, δ13C) results. This work is the first to consider palaeoclimatic effects on SGR logs from a carbonate/evaporate succession. While Th/U ratios compare well to isotope data (and thus a change to less arid hinterland climates from the Late Permian to the Early Triassic), Th/K ratios do not, suggesting a control not related to hinterland weathering. Furthermore, elevated Th/U ratios in the Early Triassic could reflect a global drawdown in U, rather than a more humid episode in the sediment hinterlands, with coincident changes in TOC. Previous work that used spectral gamma ray data in siliciclastic successions as a palaeoclimate proxy may not apply in carbonate/evaporate sedimentary rocks.

Musicologist-driven writer identification in early music manuscripts

Recent renewed interest in computational writer identification has resulted in an increased number of publications. In relation to historical musicology its application has so far been limited. One of the obstacles seems to be that the clarity of the images from the scans available for computational analysis is often not sufficient. In this paper, the use of the Hinge feature is proposed to avoid segmentation and staff-line removal for effective feature extraction from low quality scans. The use of an auto encoder in Hinge feature space is suggested as an alternative to staff-line removal by image processing, and their performance is compared. The result of the experiment shows an accuracy of 87 % for the dataset containing 84 writers’ samples, and superiority of our segmentation and staff-line removal free approach. Practical analysis on Bach’s autograph manuscript of the Well-Tempered Clavier II (Additional MS. 35021 in the British Library, London) is also presented and the extensive applicability of our approach is demonstrated.

Manuscripts

The aim of this chapter is three-fold: first, to explain systematically the multiple disciplines that have to be employed in the study of manuscripts; second, to review the evolution and development of methodologies used by the scholars who have shaped the present form of scholarship, and to chart outstanding problems that have yet to be resolved; and third, to offer some ideas of what future research might entail and in what way scholarship might unfold. Since numerous and disparate methodologies are employed in the study of Bach manuscripts, the discussions that follow will take nothing for granted, but will describe and define each one as it relates to understanding and reproducing, with as much accuracy as possible, Bach’s intentions in the manuscripts that contain his music.

A corpus-based translation study on english-persian verb phrase ellipsis

Dissertação de mest., Natural Language Processing & Human Language Technology, Faculdade de Ciências Humanas e Sociais, Univ. do Algarve, 2011

A presença árabe-islâmica em Fernando Pessoa

Tese de doutoramento, Filosofia (Filosofia em Portugal), Universidade de Lisboa, Faculdade de Letras, 2015

A magnificient collection of manuscripts formed by a gentleman of consummate taste and judgment... : Sotheby, 7 juin 1876

[Vente. Livres. 1876-06-07. Londres]

Explaining the failure of political liberalization in the persian gulf and assessing the prospects for democratization : the case of Bahrain

Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal