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In three experiments, rats received pairings of flavor conditioned stimuli with polycose unconditioned stimuli, in either
a simultaneous or a sequential relation. Both temporal relations produced excellent conditioned increases in consumption of
the flavors. Separate presentation of the flavors resulted in extinction in both cases. However, restoring the pairing of
the flavor with polycose resulted in reconditioning only with the sequential, not with the simultaneous, relation. 相似文献
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Guido?Candela Paolo?Figini Antonello?E.?ScorcuEmail author 《Journal of Cultural Economics》2004,28(4):285-302
This paper proposes a price index for artists adjusted for the quality of the paintings, based on the ratio between the average market price and the average pre-sale estimate for paintings. We apply this methodology to a group of selected artists and schools presented in auctions worldwide in the period 1990–2001. A comparison with quality unadjusted and hedonic indices is also conducted.JEL Classification: C10, Z11 相似文献
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Summary What will be the future of ONIX? Some argue that wider industry acceptance will lead to increased efficiencies in the transfer
of book data, which will ultimately benefit book sales. ONIX still has to overcome many challenges: its implementation cost
is high, whole-salers and aggregators are still using different spreadsheets and information sources. Furthermore, MS Excel
as an alternative solution is widely available and accepted by the industry. Small publishers need more education and a straightforward
demonstration of ONIX’s return on investment. An outreaching of the helping hand of professional organizations is strongly
suggested to foster the adoption process among small players. It is the role of the AAP and BISG to get their memberships
to think about what is good for all members as a whole throughout the industry. As an organization BISG can recommend, educate,
and promote the standard. It cannot, however, bring pressure or demand organizations use it. Publishers, retailers, and wholesalers
make those decisions for themselves and quite apparently the majority do not yet see the rewards. Market players need to determine
the cost versus benefit and as long as distributors and retailers agree on receiving other formats, ONIX will never take a
strong hold in the marketplace. After all, publishers should compete against each other with good books and not with multiple
computer codes. 相似文献
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