منابع مشابه
The sacrifice precision method
Sometimes problems are only hard when the numerical quantities are arbitrary, complicated large integers. When these numerical quantities are limited to being small integers, the problems become efficiently solvable. (One way to formalize this is to consider these quantities as being specified in unary, and ask if the problem becomes polynomial-time solveable.) This is called being “hard in the...
متن کاملPreemptive defensive self-sacrifice by ant workers.
Worker insects altruistically sacrifice their own reproduction to rear nondescendant kin. This sacrifice reaches its most spectacular level in suicidal colony defense. Suicidal defense, such as when the sting of a honeybee worker embeds in a predator and then breaks off, is normally a facultative response. Here we describe the first example of preemptive self-sacrifice in nest defense. In the B...
متن کاملReduction of allergenic proteins by the effect of the ripening inhibitor (rin) mutant gene in an F1 hybrid of the rin mutant tomato.
The ripening inhibitor (rin) mutant tomato yields non-ripening fruit, and the rin hybrid fruit (RIN/rin) shows an intermediate phenotype between the wild and mutant fruit, that is, red-ripe and extended shelf life. We found by a microarray analysis that the genes encoding possible allergenic proteins were expressed at a significantly lower level in the rin hybrid fruit than in the wild-type fru...
متن کاملRitual, Masks, and Sacrifice
INTRODUCTION Ritual is intimately connected with the mask, either in the wearing that hides the true face, or in the adoption of a public face. The mask makes the disengagement from ordinary time and the connection to the ancient and repetitive, which is the heart of ritual, psychologically acceptable. Together, ritual and mask facilitate the apprehension of identity and its connections with pa...
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ژورنال
عنوان ژورنال: The Bulletin of the Center for Children's Books
سال: 2022
ISSN: ['1558-6766', '0008-9036']
DOI: https://doi.org/10.1353/bcc.2022.0397