1,720,975 research outputs found
Existence Advertising, Price Competition, and Asymmetric Market Structure
Get PDFRePEc Working Papers Series: No. 20/2008
This working paper expands upon ideas presented in: Eaton, B.C., MacDonald, I.A. and Meriluoto, L. (2007) Price Competition when Not All Customers Know of All Firms. Christchurch, New Zealand: 48th Annual Conference New Zealand Association of Economists (NZAE), 27-29 Jun 2007.We examine a two stage duopoly game in which firms advertise their
existence to consumers in stage 1 and compete in prices in stage 2. Whenever the
advertising technology generates positive overlap in customer bases the equilib-
rium for the stage 1 game is asymmetric in that one firm chooses to remain small
in comparison to its competitor. For a specific random advertising technology
we show that one firm will always be half as large as the other. No equilibrium
in pure price strategies exists in the stage 2 game and as long as there is some
overlap in customer bases the mixed strategy equilibrium is far from the Bertrand
equilibrium
Spam - solutions and their problems
Get PDFThis working paper expands upon ideas presented in: MacDonald, I., Eaton, C. and Meriluoto, L. (2008) Spam - solutions and their problems. Vancouver, Canada: 42nd Annual Meeting of the Canadian Economics Association (CEA), 6-8 Jun 2008.We analyze the success of filtering as a solution to the spam problem
when used alone or concurrently with sender and/or receiver pricing. We find
that filters alone may exacerbate the spam problem if the spammer attempts
to evade them by sending multiple variants of the message to each consumer.
Sender and receiver prices can effectively reduce or eliminating spam, either on
their own or when used together with filtering. Finally, we discuss the implications for social welfare of using the different spam controls
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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