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71.
New Caledonian crows are reported to have impressive pandanus-tool manufacture abilities. These claims are based on an extensive artefact record. However, inferring behavioural and cognitive abilities without direct observation of tool manufacture is problematic. Here we report (and document on video) direct observations of a crow making and using stepped pandanus tools at Pic Ningua. We observed (1) a bias for making tools on left edges consistent with that previously found at the site, (2) faithful manufacture of a stepped design with high overall congruence in the shapes of tools, (3) the use of convergent rips to first form the tapered end working away from the trunk then the wide end working towards the trunk, (4) appropriate functional use of stepped tools by use of the leaf-edge barbs to hook food from holes, and (5) consistent holding of tools on the left side of its head when using them. Our observations verify most of the claims based on the artefact record, but the crows exact manufacture technique was slightly different to that inferred previously.Electronic Supplementary Material Supplementary material is available in the online version of this article at 相似文献
72.
73.
Online versus offline processing of visual feedback in the control of movement amplitude 总被引:1,自引:0,他引:1
Researchers have suggested that visual feedback not only plays a role in the correction of errors during movement execution but that visual feedback from a completed movement is processed offline to improve programming on upcoming trials. In the present study, we examined the potential contribution of online and offline processing of visual feedback by analysing spatial variability at various kinematic landmarks in the limb trajectory (peak acceleration, peak velocity, peak negative acceleration and movement end). Participants performed a single degree of freedom video aiming task with and without vision of the cursor under four criterion movement times (225, 300, 375 and 450 ms). For movement times of 225 and 300 ms, the full vision condition was less variable than the no vision condition. However, the form of the variability profiles did not differ between visual conditions suggesting that the contribution of visual feedback was due to offline processes. In the 375 and 450 ms conditions, there was evidence for both online and offline control as the form of the variability profiles differed significantly between visual conditions. 相似文献
74.
Gavin Hyman 《Heythrop Journal》1998,39(4):394-412
This paper proffers an example of a new form of religious dialogue. It subverts, rather than assumes the philosophical tradition of universal reason, upon which religious dialogue has traditionally proceeded. To this end, I call into question the frequently perceived affinity between Buddhism and radical postmodern a/theology. Whereas the latter works within a framework of oppositions inherited from the modern philosophical tradition, Buddhism is innocent of such a framework, and jettisons its 'either-or' antinomies. In this respect, I argue that there is a striking 'coincidence in outlook' between Buddhism and conservative postmodern theology, which also seeks to subvert the modern philosophical framework which it regards as being essentially secular. I suggest that this 'coincidence in outlook', which contrasts with the modern outlook, opens the way for a religious dialogue based on a mutual affirmation of difference, rather than on the distorting universalist quest for affinity at all costs. 相似文献
75.
John Grimes Robin Rinehart Hillary Rodrigues John M Koller Elaine Craddock Ludo Rocher Will Sweetman Boyd H Wilson Edward C Dimock Thomas Forsthoefel Hal W French Timothy C Cahill William J Jackson John Powers Frederick M Smith Gavin Flood Lelah Dushkin Sheila McDonough Frank J Hoffman Karni Pal Bhati Anne E Monius Fred Dallmayr Marcia Hermansen Joseph A Bracken Carl Olson William P Harman Donatella Rossi Anna B Bigelow Jeffrey J. Kripal 《International Journal of Hindu Studies》1998,2(2):267-310
76.
Legal Philosophies of Russian Liberalism . By Andrzej Walicki.
A History of Russian Philosophy , Edited by Valery A. Kuvakin. 相似文献
A History of Russian Philosophy , Edited by Valery A. Kuvakin. 相似文献
77.
Nitin Trasi Francis X. Clooney Maria Hibbets George Cronk Brian A. Hatcher Robin Rinehart Karen Pechilis Prentiss Hal W. French Francis X. Clooney Lisa Bellantoni Frank J. Korom Robert Menzies Constantina Rhodes Bailly Gavin Flood Rebecca J. Manring Loriliai Biernacki Brian K. Pennington John Grimes Richard D. MacPhail Glenn Wallis John J. Thatamanil John Grimes Thomas Forsthoefel Denise Cush Yasmin Saikia Joseph A. Bracken Lise F. Vail Jacqueline Suthren Hirst Judson B. Trapnell Ellison Banks Findly Paul Waldau D. L. Johnson John Grimes 《International Journal of Hindu Studies》2000,4(1):61-107
78.
79.
Bremner JG Johnson SP Slater A Mason U Cheshire A Spring J 《Developmental science》2007,10(5):613-624
When viewing an event in which an object moves behind an occluder on part of its trajectory, 4-month-old infants perceive the trajectory as continuous only when time or distance out of sight is short. Little is known, however, about the conditions under which young infants perceive trajectories to be discontinuous. In the present studies we focus first on infants' perception of trajectories that change during a period of occlusion. Four-month-olds perceive discontinuity in trajectories that change in height or orientation while behind an occluder, and this is true even when a change in direction could be due to an invisible bouncing collision with a surface. Further experiments reveal that infants do not perceive diagonal linear trajectories as continuous across an occlusion unless the occluding and revealing edges are orthogonal to the path of movement. Implications for theories of perceptual and cognitive development are discussed. 相似文献
80.