In the August 1881 issue of the New York magazine Science there is a long overlooked article entitled ‘Mr. Darwin on Dr. Hahn’s discovery of fossil organisms in meteorites’. Science was founded the preceding year by journalist John Michels with financial backing of Thomas Edison. Struggling to find a place in the popular science market, the illustrated weekly magazine was only published until M...

We describe our experiences running PFLOTRAN—a code for simulation of coupled hydro-thermal-chemical processes in variably saturated, non-isothermal, porous media—on the Cray XT series of computers, including initial experiences running on the petaflop incarnation of Jaguar, the Cray XT5 at the National Center for Computational Sciences at Oak Ridge National Laboratory. PFLOTRAN utilizes fully ...

In this paper, we report on lessons learned while building iMeMex, the first incarnation of a Personal Dataspace Management System (PDSMS). In contrast to traditional keyword search engines, users may not only search their collections with iMeMex but also semantically integrate them over time. As a consequence, the system may improve on precision and recall of queries in a pay-as-you-go fashion...

Any endomorphism of a finitely generated free group naturally descends to an injective endomorphism of its stable quotient. In this paper, we prove a geometric incarnation of this phenomenon: namely, that every expanding irreducible train track map inducing an endomorphism of the fundamental group gives rise to an expanding irreducible train track representative of the injective endomorphism of...

Wikipedia’s precursor started in the year 2000 as a traditional online encyclopedia with content controlled by a small group of experts. In 2013 Wikipedia’s current user-controlled incarnation was such a successful enterprise that an asteroid was named after it. We briefly discuss key opportunities and challenges in e-collaboration research on Wikipedia. The opportunities refer to studies on th...

The Internet of Chemical Things (IoCT), a growing network of computers, mobile devices, online resources, software suites, laboratory equipment, synthesis apparatus, analytical devices, and a host of other machines, all interconnected to users, manufacturers, and others through the infrastructure of the Internet, is changing how we do chemistry. While in its infancy across many chemistry labora...

Цель данной статьи — проанализировать с богословской позиции тексты литургий Коптской Православной Церкви, основываясь на известных рукописях и чинопоследованиях свт. Василия Великого, апостола Марка Григория Богослова. Коптская Православная Церковь объясняет своё учение в его простом содержании: отношения человека Богом молитвах церковных таинствах являются отношениями между Источником, то ест...