993 resultados para Punched card systems
Resumo:
Mode of access: Internet.
Resumo:
Shipping list no.: 90-554-P.
Resumo:
"February 1984."
Resumo:
Mode of access: Internet.
Resumo:
Contains bibliographies.
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
Mode of access: Internet.
Resumo:
"Conducted under ARDC Research and Development project 2079."
Resumo:
This paper analyzes the demand and cost structure of the French market of academic journals, taking into account its intermediary role between researchers, who are both producers and consumers of knowledge. This two sidedness feature will echoes similar problems already observed in electronic markets – payment card systems, video game console etc - such as the chicken and egg problem, where readers won’t buy a journal if they do not expect its articles to be academically relevant and researchers, that live under the mantra “Publish or Perish”, will not submit to a journal with either limited public reach or weak reputation. After the merging of several databases, we estimate the aggregated nested logit demand system combined simultaneously with a cost function. We identify the structural parameters of this market and find that price elasticities of demand are quite large and margins relatively low, indicating that this industry experiences competitive constraints.
Resumo:
"Prepared under contract NONR551(40), 1 September 1963."