Hydrogenation of free-standing silicene, the two-dimensional allotrope of silicon, is investigated in detail using first-principles methods and compared with the adsorption of H atoms on graphene. Similarly to graphene, chemisorption of a single H atom on silicene induces the formation of a semilocalized state around the adatom, a sharp peak in the density of states at the Fermi level which act...

The large variation in the share of land for open space across U.S. urban areas raises some interesting questions: a) what determines the amount of open space in an urban area? b) How does open space affect community characteristics such as housing prices and local property tax rates? and c) are existing amounts of open space across U.S. urban areas socially optimal? In this paper, we conduct t...

This paper reports on preliminary research into a new type of automated market, namely a quote-driven market. The research aims to develop the necessary market protocols and infrastructure, and to investigate the impact of pre-set parameters on the effectiveness of the market in terms of liquidity, price volatility, throughput and profitability for the market participants. Quote-driven trading ...

The notion that information moves through social networks has been widely discussed[3], however, with the growing availability of large digital corpora, the ability to quantitatively model this phenomenon is new. To this end we explore a large corpus of online news quotations looking for cases of noisy reproduction and the factors which influence such noise. An essential step in this process is...

recent years have witnessed a parallel and seemingly contradictory trend towards both the standardization and the customization of healthcare and medical treatment. here, we explore what is meant by ‘standardization’ and ‘customization’ in healthcare settings and explore the implications of these changes for healthcare delivery. we frame the paradox of these divergent and opposing factors in te...