Antique Cameo, Found at South Shields, Durham

Volcanic Shields on Mercury Identified at Last?

Introduction: Small (<50 km) basaltic shield volcanoes are known on Earth [1], the Moon [2], Mars [3] and Venus [4], but have not hitherto been positively identified on Mercury. A candidate on Mercury suggested by Head et al. on the basis of MESSENGER flyby imagery [5] was subsequently shown not to be a constructional edifice but to be a compound volcanic vent that had acted as a source only fo...

Antique Team

In this document, we use the Abstract Interpretation framework to analyze concurrent programs using Thread-Modular Analysis. We designed a relational abstraction of interferences in order to infer more properties and go beyond the state of the art. We implemented a basic analyzer, studying the numerical properties of a simple language. We present the results obtained, as well as a study of the ...

Antique medical instruments

Digital Restoration for Antique Documents

Different advantages stem from the digital restoration of documents of high cultural value. In this paper different techniques to digital restoration of antique documents are reported. In particular, we address the problem of virtual restoration of photographic prints. We propose a classification of defects related to their origin presenting also some non linear techniques able to restore the m...

metallicity of starburst galaxies in chandra deep field south (cdf-s) , at 0.5

چکیده یکی از پارامترهای اصلی در دنبال کردن تاریخچه ی تشکیل ستاره ها و تحول کهکشان ها، مطالعه ی میزان فراوانی عناصر آن ها است. در این پایان نامه برای مطالعه ی همبستگی میان فراوانی فلزی و جرم ستاره ای کهکشان ها، از داده های طیفی 89 کهکشانِ ستاره زا استفاده شده است. طیف ها توسط طیف نگار فورس2 از میدان ژرف جنوبی چاندرا گرفته شده و جابه جایی به سرخ طیف ها همه بزرگتر از نیم و کوچکتر از یک هستند. جر...