The Tourinho model: neglected nugget or a receding relic?

The shape of Au8: gold leaf or gold nugget?

The size at which nonplanar isomers of neutral, pristine gold nanoclusters become energetically favored over planar ones is still debated amongst theoreticians and experimentalists. Spectroscopy confirms planarity is preferred at sizes up to Au7, however, starting with Au8, the uncertainty remains for larger nanoclusters. Au8 computational studies have had different outcomes: the planar D4h "cl...

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

Objective Bayesian Analysis for a Spatial Model with Nugget Effects

Objective priors, especially reference priors, have been well-known for geostatistical data since Berger, et al. (2001). A long-standing problem is to develop objective Bayes inference for spatially correlated data with nugget effects. In this paper, objective priors for such cases are systematically studied. In addition to the Jeffreys priors and commonly used reference priors, two types of “e...

Pandemic H5N1: Receding Risk or Coming Catastrophe?

Rarely do arguments about the meaning of serosurveillance data bear directly upon potentially preventing billions of deaths. But this has been the case in attempts at making sense of more than 50 serologic studies of human antibody to avian H5N1 viruses in exposed and unexposed human populations from countries in which H5N1 has been circulating in poultry [1–4]. Sixteen years since highly patho...

African Librarianship: A Relic, a Fallacy, or an Imperative?