La medicina regenerativa

Enguany, el premi Nobel de medicina i fisiologia és especialment significatiu per dos motius.

The illusion of control, the structures of prizes and the demand for football pools in Spain

Using data for all the fixtures for the seasons from 1972-73 to 2002-03, we estimate a dynamic model of demand for football pools in Spain paying attention to whether their main economic explanatory variable is the effective price of a ticket or the jackpot. Additionally, we evaluate the importance of the composition of the list of games in terms of whether First Division matches are included or not. Results show that the jackpot model is preferred to the effective price model, having important implications in terms of how the structure of the game should be changed in order to increase demand.

Affirmative Action through Extra Prizes

Some affirmative action policies establish that a set of disadvantaged competitors has access to an extra prize. Examples are gender quotas or a prize for national competitors in an international competition. We analyse the effects of creating an extra prize by reducing the prize in the main competition. Contestants differ in ability and agents with relatively low ability belong to a disadvantaged minority. All contestants compete for the main prize, but only disadvantaged agents can win the extra prize. We show that an extra prize is a powerful tool to ensure participation of disadvantaged agents. Moreover, for intermediate levels of the disadvantage of the minority, introducing an extra prize increases total equilibrium effort compared to a standard contest. Thus, even a contest designer not interested in affirmative action might establish an extra prize in order to enhance competition. Keywords: Asymmetric contest, equality of opportunity, affirmative action, discrimination, prize structure, exclusion principle. JEL: C72, D72, I38, J78

Carner, candidat al premi Nobel

Capítol 8 sobre la candidatura de Josep Carner al premi Nobel de Literatura, a partir de 1962.

El concepto de extrañeza en Albert Camus

Aquest treball indaga en la noció d'estranyesa en l'obra d'Albert Camus (1913-1960), escriptor, filòsof, periodista, dramaturg i Premi Nobel de Literatura. En un recorregut per la novel·la L’estranger, i per altres volums de l'escriptor algerià, es tracen les línies fonamentals del pensament d'aquest autor, considerat un artífex de l'existencialisme, etiqueta que ell mateix rebutjaria. En aquesta investigació es realitza una inspecció a la seva trajectòria per a dilucidar si l'absurd camusià és un pas al nihilisme o si, al contrari, l'estranyesa serà una via per superar-lo.

Malgrat tot, són aquí

Comentari sobre l’excés de premis literaris catalans i valoració de la influència del premi Casero

The distribution of talent across contests

Do the contests with the largest prizes attract the most able contestants? Towhat extent do contestants avoid competition? In this paper, we show, theoreticallyand empirically, that the distribution of abilities plays a crucial role in determiningcontest choice. Sorting exists only when the proportion of high-ability contestantsis sufficiently small. As this proportion increases, contestants shy away from competitionand sorting decreases, such that, reverse sorting becomes a possibility. Wetest our theoretical predictions using a large panel data set containing contest choiceover three decades. We use exogenous variation in the participation of highly-ablecompetitors to provide empirical evidence for the relationship among prizes, competition,and sorting.

Competition amongst contests

This article analyses the allocation of prizes in contests. While existing models consider a single contest with an exogenously given set of players, in our model several contests compete for participants. As a consequence, prizes not only induce incentive effects but also participation effects. We show that contests that aim to maximize players aggregate effort will award their entire prize budget to the winner. In contrast, multiple prizes will be awarded in contests that aim to maximize participation and the share of the prize budget awarded to the winner increases in the contests randomness. We also provide empirical evidence for this relationship using data from professional road running. In addition, we show that prize structures might be used to screen between players of differing ability.

Adaptive model selection using empirical complexities

Given $n$ independent replicates of a jointly distributed pair $(X,Y)\in {\cal R}^d \times {\cal R}$, we wish to select from a fixed sequence of model classes ${\cal F}_1, {\cal F}_2, \ldots$ a deterministic prediction rule $f: {\cal R}^d \to {\cal R}$ whose risk is small. We investigate the possibility of empirically assessingthe {\em complexity} of each model class, that is, the actual difficulty of the estimation problem within each class. The estimated complexities are in turn used to define an adaptive model selection procedure, which is based on complexity penalized empirical risk.The available data are divided into two parts. The first is used to form an empirical cover of each model class, and the second is used to select a candidate rule from each cover based on empirical risk. The covering radii are determined empirically to optimize a tight upper bound on the estimation error. An estimate is chosen from the list of candidates in order to minimize the sum of class complexity and empirical risk. A distinguishing feature of the approach is that the complexity of each model class is assessed empirically, based on the size of its empirical cover.Finite sample performance bounds are established for the estimates, and these bounds are applied to several non-parametric estimation problems. The estimates are shown to achieve a favorable tradeoff between approximation and estimation error, and to perform as well as if the distribution-dependent complexities of the model classes were known beforehand. In addition, it is shown that the estimate can be consistent,and even possess near optimal rates of convergence, when each model class has an infinite VC or pseudo dimension.For regression estimation with squared loss we modify our estimate to achieve a faster rate of convergence.

Anna Senyé : Notes biogràfiques i recorregut poètic

Anna Senyé Ramisa (Manlleu, 1881-Barcelona, 1956) fou una dona de caràcter aventurer que va tenir una vida poc convencional. Va escriure en diferents revistes i diaris catalans des de 1914 i durant la primera meitat del segle xx, com a poeta, periodista i activista social, amb la publicació d’articles i manifestos en defensa dels drets dels animals. Senyé també participà en els Jocs Florals i va guanyar-hi premis en els celebrats a l’Escala i a Molins de Rei. L’any 1922 va publicar el seu treball poètic en un volum, Remolinada.

Misterios en una extraña novela: Curial e Güelfa

Curial e Güelfa es una novela catalana extraña, es una mezcla de libro de caballerías y de novela sentimental, y no hay mención de ella en texto alguno hasta que en 1876 Manuel Milá y Fontanals dio noticia de su existencia en un artículo en francés: «Notes sur trois manuscrits», en Revue de Langues Romanes...

Diego Hurtado de Mendoza, autor de La segunda parte de Lazarillo de Tormes.

Antes de hablar de Diego Hurtado de Mendoza y de su continuación del Lazarillo, me gustaría recordar otras usurpaciones de personajes literarios...

Altisidora no hizo mención de los camellos

Altisidora es una joven atrevida, graciosa y desenvuielta; y por si ahora no caen en quién es, diré que es la ingeniosa doncella de la duquesa, personajes las dos de la Segunda Parte del ingenioso caballero de Don Quijote de la Mancha...

Diego Hurtado de Mendoza está de moda

No acababa de aparecer mi artículo en Clarín en donde atribuyo a Diego Hurtado de Mendoza 'La segunda parte de Lazarillo de Tormes', cuando se lanzó al mundo la gran noticia de que el 'Lazarillo de Tormes' no es anónimo...

La bailarina mortal del romancero de García Lorca y la luna de la Salomé de Óscar Wilde.

Se suele buscar siempre tras el texto la experiencia del escritor, pero olvidamos que el creador vive intensamente las lecturas que le asombran, que le atraen, y que, por tanto, a menudo aparecen estas tras sus palabras.