This paper will consider a number of issues. Section 1 will introduce the paper, establishing why reliable internationally comparable statistics on cultural participation are needed. Section 2 will address the major and various difficulties that arise in comparing national surveys, both over time and to each other. Section 3 will consider the problems that persist even with cross-national surveys for comparative purposes. Section 5 will conclude the paper with some policy recommendations. 相似文献
Kemp, A., December 2017. Adaptations to life in freshwater for Mioceratodus gregoryi, a lungfish from Redbank Plains, an Eocene locality in southeast Queensland, Australia. Alcheringa 42, 306–311. ISSN 0311-5518
Few Cenozoic lungfish fossils consist of articulated, associated bones and tooth plates. Mioceratodus gregoryi from the Paleogene (Eocene) deposit of the Redbank Plains Formation in southeast Queensland is unusual in this respect because the fossil includes tooth plates and elements of the skull. An analysis of the material and reconstruction of the skull and associated skeletal material provides new insights into the fish and its environment. The fish has a mandible with a wide separation between the lower tooth-bearing bones, and a strong ceratohyal bone. This suggests that, like the extant Australian lungfish, Neoceratodus forsteri, the fossil fish had a moveable basihyal that could be inserted between the prearticular bones to seal the oral cavity. This would have allowed the fish to draw food, air and water into the mouth, and dig holes by sucking mud into the oral cavity and blowing it out again, all useful attributes for a fish that lived in a shallow freshwater lake. The living Australian lungfish has similar structures in the mandible and hyoid apparatus, and performs comparable actions. The occipital ribs, also preserved in the Redbank Plains fossil, are embedded in hypaxial muscles and not moveable. It is unlikely that these ribs have any influence on the suctorial process in these two species.
Anne Kemp [a.kemp@griffith.edu.au] Environmental Futures Centre, Griffith University, 170 Kessels Road, Nathan, Brisbane, Queensland 4111, Australia.相似文献
AbstractThe male/female sex ratio (SR) and its age-specific patterns vary considerably across time and place. The SR generally begins male-biased at birth and becomes female-biased later in life, but this relationship should respond to historical trends and events. Temporal trends in SRs remain largely unstudied and formal demographic relationships are not well defined. We (1) define SRs in a life table framework, (2) estimate the age at which the number of males and females achieves parity—the sex ratio crossover (SRX)—using basic life table methods, and (3) explore historical and international patterns in these trends. Using publicly-available data from the Human Mortality Database, we construct SR and SRX measures from period and cohort life tables. Analyses explore temporal patterns for seven countries in different global regions since 1850. Overall temporal trends show the SRX advancing to older ages. The SRX also appears to respond to historical events such as wars and epidemics. The measure is simple to construct from life table data, and provides additional insight into the historical context of gender dynamics. 相似文献
Hesiod’s fable (ainos) of the hawk and the nightingale, addressed to kings, notoriously has no moral. Its depiction of a hawk carrying off a nightingale, preaching the futility of either resistance or pleading, appears to communicate the counsel, commonly designated as “Machiavellian,” that a ruler must know how to imitate a beast as well as a man. Such instruction—which advises that unjust actions are justifiable and necessary for a ruler—is clearly at odds with Hesiod’s explicit exhortations to his brother Perses to work hard and avoid hubris, and his caution that unjust kings or lords (basileis) will be punished by Zeus. I argue that Hesiod’s addressing the fable to kings “who themselves have understanding” explains the lack of a moral. To substantiate my claim I compare Hesiod’s and Machiavelli’s ranking of intellects, and illuminate Hesiod’s position with particular reference to and comparison with Machiavelli’s Prince, and examples drawn from the Old Testament and Old Irish law. 相似文献