نتایج جستجو برای: riddle equation
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This is our reply to the letter by Maloney, which answers our riddle published in the recent editorial. The riddle described a paradox, in which one unfavorable condition nullified the effect of another. This is how the riddle was phrased: “A group of rats was fed a low-protein chow and kept at room temperature; all animals died. Another group of rats was fed the same chow but kept in the cold;...
We model the well-known Sum-and-Product problem in a modal logic, and verify its solution in a model checker. The modal logic is public announcement logic. This logic contains operators for knowledge, but also for the informational consequences of public announcements. The logic is interpreted on multi-agent Kripke models. The information in the riddle can be represented in the traditional way ...
A coherent story is a story that fits together well. This notion plays a central role in the coherence theory of justification and has been proposed as a criterion for scientific theory choice. Many attempts have been made to give a probabilistic account of this notion. A proper account of coherence must not start from some partial intuitions, but should pay attention to the role that this noti...
I diopathic pulmonary arterial hypertension (IPAH) used to be called primary pulmonary hypertension. Both terms indicate that we do not yet fully understand the aetiology of the disease. A clue to the underlying mechanisms lies in the observation that the appetite-suppressant drugs aminorex [1, 2] and fenfluramine [3] were both associated with a marked increase in the incidence of pulmonary art...
The biological response to DNA double-strand breaks acts to preserve genome integrity. Individuals bearing inactivating mutations in components of this response exhibit clinical symptoms that include cellular radiosensitivity, immunodeficiency, and cancer predisposition. The archetype for such disorders is Ataxia-Telangiectasia caused by biallelic mutation in ATM, a central component of the DNA...
If influenza is a riddle wrapped in mystery inside an enigma, then the viral genes are the riddle, the variable surface antigens for which they code are the mystery, and the course and cause of epidemics the ultimate enigma. Paradoxically, the disease itself has remained a stable and recognizable entity through the years, whether initiated by A/PR/8/34 or A/USSR/90/77 variant viruses. Thus, evo...
A recent study of the interaction of a lithium atom with the thiophene molecule found a large disagreement between high-level coupled cluster (CCSD(T)/AVTZ) and quantum Monte Carlo (fixed-node diffusion Monte Carlo, or FNDMC) calculations. We address this "lithium-thiophene riddle" by analyzing the influence of crucial FNDMC simulation parameters, namely, the one-electron models, basis sets, an...
A coherent story is a story that fits together well. This notion plays a central role in the coherence theory of justification and has been proposed as a criterion for scientific theory choice. Many attempts have been made to give a probabilistic account of this notion. A proper account of coherence must not start from some partial intuitions, but should pay attention to the role that this noti...
In knowledge bases where concepts have associated properties, there is a large amount of comparative information that is implicitly encoded in the values of the properties these concepts share. Although there have been previous approaches to generating riddles, none of them seem to take advantage of structured information stored in knowledge bases such as Thesaurus Rex, which organizes concepts...
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