1,721,050 research outputs found
When Does Extra Risk Strictly Increase the Value of Options?
Get PDFIt is well known that risk increases the value of options. This paper makes that precise in a new way. The conventional theorem says that the value of an option does not fall if the underlying option becomes riskier in the conventional sense of the mean-preserving spread. This paper uses two new definitions of ``riskier'' to show that the value of an option strictly increases (a) if the underlying asset becomes ``pointwise riskier,'' and (b) only if the underlying asset becomes ``extremum riskier.''options, risk, mean-preserving spread,calls
Buyer-Option Contracts Restored: Renegotiation, Inefficient Threats, and the Hold-Up Problem
Get PDF“Buyer option” contracts, in which the buyer selects the product variant to be traded and chooses whether to accept delivery, are often used to solve hold-up problems. We present a simple game that focusses sharply on subgames in which the buyer proposes inefficient actions in order to improve his bargaining position. We argue for one of several alternative ways to model this situation. We then apply that modeling choice to recent models of the foundations of incomplete contracts and show that a buyer option contract is sufficient to induce first-best outcomes.
Letter: What Economists Can Contribute to the Global Warming Debate
No full textEric Rasmusen presents a global warming research agenda for economists.
Letter: Is There Research Economist Support for the Stimulus Bill?
No full textCome out, come out, wherever you are, says Eric Rasmusen.
Letter: Must Homeowners Lose Wealth When House Prices Fall?
No full textParadoxically, Eric Rasmusen argues that a fall in house prices might actually raise the wealth of homeowners.
notice, is given to the source. Charging Nox Emitters for Health Damages: An Exploratory Analysis
No full textThis is a draft of our forthcoming chapter in the Handbook of Law and Economics, eds. A. Mitchell Polinsky and Steven Shavell. The authors wish to thank Ashley Ensign for her helpful research assistance, and would also like to thank Eric Rasmusen and the editors for their thoughtful comments. The views expressed herein are those of the author(s) and not necessarily those of the National Bureau of Economic Research
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
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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