Bundling under the Threat of Parallel Trade

This paper examines the use of bundling by a firm that sells in two national markets and faces entry by parallel traders. The firm can bundle its main product, - a tradable good- with a non-traded service. It chooses between the strategies of pure bundling, mixed bundling and no bundling. The paper shows that in the low-price country the threat of grey trade elicits a move from mixed bundling, or no bundling, towards pure bundling. It encourages a move from pure bundling towards mixes bundling or no bundling in the high-price country. The set of parameter values for which the profit maximizing strategy is not to supply the low price country is smaller than in the absence of bundling. The welfare effects of deterrence of grey trade are not those found in conventional models of price arbitrage. Some consumers in the low-price country may gain from the threat of entry by parallel traders although they pay a higher price. This is due to the fact that the firm responds to the threat of arbitrageurs by increasing the amount of services it puts in the bundle targeted at consumers in that country. Similarly, the threat of parallel trade may affect some consumers in the hight-price country adversely.

Multi-Prover and parallel repetition in non-classical interactive games

Depuis l’introduction de la mécanique quantique, plusieurs mystères de la nature ont trouvé leurs explications. De plus en plus, les concepts de la mécanique quantique se sont entremêlés avec d’autres de la théorie de la complexité du calcul. De nouvelles idées et solutions ont été découvertes et élaborées dans le but de résoudre ces problèmes informatiques. En particulier, la mécanique quantique a secoué plusieurs preuves de sécurité de protocoles classiques. Dans ce m´emoire, nous faisons un étalage de résultats récents de l’implication de la mécanique quantique sur la complexité du calcul, et cela plus précisément dans le cas de classes avec interaction. Nous présentons ces travaux de recherches avec la nomenclature des jeux à information imparfaite avec coopération. Nous exposons les différences entre les théories classiques, quantiques et non-signalantes et les démontrons par l’exemple du jeu à cycle impair. Nous centralisons notre attention autour de deux grands thèmes : l’effet sur un jeu de l’ajout de joueurs et de la répétition parallèle. Nous observons que l’effet de ces modifications a des conséquences très différentes en fonction de la théorie physique considérée.

Our Lady of Ocotlán and our Lady of Guadalupe : investigation into the origins of parallel virgins

Thèse numérisée par la Division de la gestion de documents et des archives de l'Université de Montréal

Parallel metaheuristics for stochastic capacitated multicommodity network design

Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal

Uncovering parallel ribosome biogenesis pathways during pre-60S subunit maturation

Paralogs are present during ribosome biogenesis as well as in mature ribosomes in form of ribosomal proteins, and are commonly believed to play redundant functions within the cell. Two previously identified paralogs are the protein pair Ssf1 and Ssf2 (94% homologous). Ssf2 is believed to replace Ssf1 in case of its absence from cells, and depletion of both proteins leads to severely impaired cell growth. Results reveal that, under normal conditions, the Ssf paralogs associate with similar sets of proteins but with varying stabilities. Moreover, disruption of their pre-rRNP particles using high stringency buffers revealed that at least three proteins, possibly Dbp9, Drs1 and Nog1, are strongly associated with each Ssf protein under these conditions, and most likely represent a distinct subcomplex. In this study, depletion phenotypes obtained upon altering Nop7, Ssf1 and/or Ssf2 protein levels revealed that the Ssf paralogs cannot fully compensate for the depletion of one another because they are both, independently, required along parallel pathways that are dependent on the levels of availability of specific ribosome biogenesis proteins. Finally, this work provides evidence that, in yeast, Nop7 is genetically linked with both Ssf proteins.