If small comets are as numerous in the inner solar system as Prank et al. [1986a] have recently proposed, large and easily detectable amounts of hydrogen would be generated in interplanetary space. Inhibition of water vapor production by a factor of 3 x 10 -9 by very thick dust mantles would be necessary to prevent excitation of a detectable interplanetary Lyman a glow. Other optical problems a...

Although previous studies have examined the distinct motivations of acquirers and contrasted differences between friendly hostile acquisitions, combination acquirer target firm perspectives, particularly within has not yet been addressed. By adopting a multidisciplinary approach integrating acquiring acquired firms’ this study identifies different types deals investigates their impact on post-a...

This paper examines the sustainable financing of R&D activities in cybersecurity industry as a long-term investment to generate future profits and protect societies from consequences uncertainty an essential part nation’s security strategy. Since this study utilises dynamic panel model, hierarchy sources for is determined by controlling specific fixed effects. The estimator's efficiency improve...

Based on the results of author’s research conducted in 2014-2016 with participation inhabitants two urban enclaves poverty Poland, article focuses mobility and various spatial attitudes which have been identified basis participants’ drawings sketch maps related to their place residence: yard, nearest neighbourhood city. When constructing model attitudes, author was inspired by Stomma’s ethnolog...