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Local mate competition and the sex ratio
Journal of Theoretical Biology, 1980Abstract Hamilton (1967) pointed out that Fisher's (1930) argument predicting an equality of the sex ratio may break down when there is local competition for mates. He considered in particular a model in which the environment consists of a number of isolated patches, each of which is colonized by a number of inseminated females; the offspring ...
P D, Taylor, M G, Bulmer
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Buying a Constant Competitive Ratio for Paging
2001We consider a variant of the online paging problem where the online algorithm may buy additional cache slots at a certain cost. The overall cost incurred equals the total cost for the cache plus the number of page faults. This problem and our results are a generalization of both, the classical paging problem and the ski rental problem.
Csirik, János +4 more
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Competitive Ratio as Coherent Measure of Risk
2013A risk measure determines the quantity of an asset that needs to be kept in reserve in order to make the risk taken by an investor acceptable. In the last decade coherent measures of risk meeting a set of four desirable properties gain in importance. We prove the Competitive Ratio to be coherent since it satisfies the four required axioms.
Ahmad, Iftikhar +2 more
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Competitive Strategy and Financial Ratios
SSRN Electronic Journal, 2007We examine whether asset turnover and profit margin ratios reflect a firm's competitive strategy. We show the following: (a) the RNOA, asset turnover and profit margins are firm-specific rather than industry-specific, indicating that these ratios provide information on the firm's operating choices.
Xiaohui Liu +2 more
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Competitive Online Approximation of the Optimal Search Ratio
SIAM Journal on Computing, 2004How efficiently can we search an unknown environment for a goal in unknown position? How much would it help if the environment were known? We answer these questions for simple polygons and for general graphs, by providing online search strategies that are as good as the best offline search algorithms, up to a constant factor.
Fleischer, R. +4 more
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The dynamics of operational sex ratios and competition for mates
Trends in Ecology & Evolution, 1996In sexually reproducing animals, individuals of one sex may have to compete for access to mating partners of the opposite sex. The operational sex ratio (OSR) is central in predicting the intensity of mating competition and which sex is competing for which.
C, Kvarnemo, I, Ahnesjo
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Average competitive ratios of on-line spanning trees
Information Processing Letters, 1997zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bao, F., Mei, A., Igarashi, Y.
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Sex ratio and intrasexual kin competition in mammals
Oecologia, 1985Asymmetries in both intrasexual competition and generation overlap occur in Antechinus (Dasyuridae; Marsupialia). We show that the range of interpopulation variation in the sex ratio of pouch young spans and exceeds the range of sex ratios at birth hitherto recorded from eutherians (Clutton-Brock and Albon 1983). Although postweaning dispersal and male
Andrew, Cockburn +2 more
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A ratio measure of interparty competition?
Behavioral Science, 1977Meltz has proposed a ratio measure of interparty competition, Ω, for two-party electoral systems which he claims is completely general. It is maintained that for very reasonable situations of party competition, the Meltz index does not fall in the [0,1] interval and that it is better interpreted as approximating a standard score.
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Ratio of Fainess and Competitiveness in Judicial Practice
Prologue: Law Journal, 2021The article is devoted to the study of the question of the ratio of fairness and competitiveness in judicial practice. The purpose of the article is to determine the general and distinctive features of fairness and competitiveness in the legal process, to establish the relationship in judicial practice, and to identify contradictions between them.
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