Sunspots are the subject of interest to many astronomers and solar physicists. Sunspot observation, analysis and classification form an important part of furthering the knowledge about the Sun. Sunspot classification is a manual and very labor intensive process that could be automated if successfully learned by a machine. This paper presents machine learning approaches to the problem of sunspot...

This thesis is a contribution to the ongoing discussion of dreams in the Islendingasogur. Most previous scholarship on this subject has dealt with one of the following: either attempted to identify a scheme to explain the origin of saga dreams (e.g. identifying influence from European dream-book theory on saga dreams), or attempted to explain the saga dreams using what can be referred to as the...

The aim of this study is to make a bibliometric comparison of the performance of research astronomers in the Netherlands Research School for Astronomy (NOVA) with astronomers elsewhere. This is complementary to similar studies as undertaken by the Center for Science and Technology Studies (CWTS), but has the specific feature of using the NASA Astrophysics Data System (ADS)1 and possibilities of...

This study empirically establishes a link between medieval trade, agglomeration and contemporary regional development in ten European countries. It documents a statistically and economically significant positive relationship between prominent involvement in medieval trade and commercial activities and regional economic development today. Further empirical analyses show that medieval trade posit...

many studies concerning persian history have been performed. persian physicians and scientists greatly contributed to medical sciences by their own observations, experimentations and skills through more than seven thousand years of persian history. in persian medieval medicine, different fields were described. among these fields, neurological disorders, especially headache and epilepsy were exp...