For the last two decades, experimental information on nuclear level densities for about 60 different nuclei has been obtained basis of Oslo method. While each these measurements typically compared to one or a few density models, global study including all missing. The present provides systematic comparison between data and six models 42 which $s$-wave resonance spacings are also available. We a...

Abstract Conceptual modeling of domain object hierarchies, such as product hierarchies or organization is difficult due to the intricate nature nonphysical objects organized in hierarchies. Modeling part-whole covers their hierarchical structure, yet capture meaning, have be combined with specialization and multi-level instantiation. To this end we introduce deep (DDO) pattern approach. With DD...