With the sophisticated radiation transport codes available today, solving discrete inverse problems using transport is possible. We examine an inverse source problem where the unknowns are the • source spatial distribution and • source energy spectrum. For a tractable problem, we assume that the following are given: • the geometric configuration of the system and • the material properties (that...

The following problem is known as the Church Synthesis

In Beebe (2011), I argued against the widespread reluctance of philosophers to treat skeptical challenges to our a priori knowledge of necessary truths with the same seriousness as skeptical challenges to our a posteriori knowledge of contingent truths. Vahid (2013) offers several reasons for thinking the unequal treatment of these two kinds of skepticism is justified, one of which is a priori ...

Objective: To review what is known about young people’s drug use in Australia and to evaluate whether illicit drug use has become normalised among Australian youth. Method: Survey data and social research findings on young people’s illicit drug use are reviewed and evaluated against the criteria of the normalisation thesis. The utility of the normalisation thesis is assessed in the Australian c...

The most investigated variants of P systems in the last years are cell-like models, especially in terms of efficiency. Recently, different new models of tissue-like (symport/antiport) P systems have received important attention. This paper presents a new class of tissue P systems with cell separation, where cell separation can generate new workspace. Its efficiency is investigated, specifically...

Consciousness poses the most baffl ing problems in the science of the mind. Th ere is nothing that we know more intimately than conscious experience, but there is nothing that is harder to explain. All sorts of mental phenomena have yielded to scientifi c investigation in recent years, but consciousness has stubbornly resisted. Many have tried to explain it, but the explanations always seem to ...