7,679 research outputs found

    Bivalve mollusc culture research in Thailand

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    An account of research, which explored new biological and socioeconomic perspectives on bivalve mollusc culture to increase production and to improve the livelihood of farmers. It presents a review of the pathways in which aquatic macrophytes may be involved in the food production process, directly as human food, as livestock fodder, as fertilizer (mulch and manure, ash, green manure, compost, biogas slurry), and as food for aquatic herbivores, such as fish, turtles, rodents and manatees. Suggests research areas.Mollusc culture, Research programmes, ICLARM publications, Thailand, Bivalvia

    Spin-spin Correlation in Some Excited States of Transverse Ising Model

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    We consider the transverse Ising model in one dimension with nearest-neighbour interaction and calculate exactly the longitudinal spin-spin correlation for a class of excited states. These states are known to play an important role in the perturbative treatment of one-dimensional transverse Ising model with frustrated second-neighbour interaction. To calculate the correlation, we follow the earlier procedure of Wu, use Szego's theorem and also use Fisher-Hartwig conjecture. The result is that the correlation decays algebraically with distance (nn) as 1/n1/\surd n and is oscillatory or non-oscillatory depending on the magnitude of the transverse field.Comment: 5 pages, 1 figur

    El Diablo

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    In lieu of an abstract, below is the essay\u27s first paragraph. As El Diablo sailed gracefully over the back fence, he took a glance over his shoulder at Sam, who was befuddled. If Sam were capable of detecting the various expressions on Diablo\u27s face, he would have noticed that the most prominent feature was a roguish grin, smeared from ear to ear. As Diablo\u27s feet touched the grass on the other side, his mind raced with ideas as to how he would enjoy his newfound freedom. Escaping was simple this morning. The humans must have been up too late watching television--typical. He would probably stop by to occasionally look in on them, from afar, until he decided to actually come home. Oh, he was planning to return perhaps he wasn\u27t human, but he wasn\u27t stupid either; he knew which side his bread was buttered on. He simply felt that he was due for a holiday

    Exact solution of a 2d random Ising model

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    The model considered is a d=2 layered random Ising system on a square lattice with nearest neighbours interaction. It is assumed that all the vertical couplings are equal and take the positive value J while the horizontal couplings are quenched random variables which are equal in the same row but can take the two possible values J and J-K in different rows. The exact solution is obtained in the limit case of infinite K for any distribution of the horizontal couplings. The model which corresponds to this limit can be seen as an ordinary Ising system where the spins of some rows, chosen at random, are frozen in an antiferromagnetic order. No phase transition is found if the horizontal couplings are independent random variables while for correlated disorder one finds a low temperature phase with some glassy properties.Comment: 10 pages, Plain TeX, 3 ps figures, submitted to Europhys. Let

    Non-Entailed Subsequences as a Challenge for Natural Language Inference

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    Neural network models have shown great success at natural language inference (NLI), the task of determining whether a premise entails a hypothesis. However, recent studies suggest that these models may rely on fallible heuristics rather than deep language understanding. We introduce a challenge set to test whether NLI systems adopt one such heuristic: assuming that a sentence entails all of its subsequences, such as assuming that "Alice believes Mary is lying" entails "Alice believes Mary." We evaluate several competitive NLI models on this challenge set and find strong evidence that they do rely on the subsequence heuristic.Comment: Accepted as an abstract for SCiL 2019; added acknowledgment
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