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We examine experimentally an auction model with externalities in which competing firms bid for licenses to a cost-reducing technology. Since winning bidders impose a negative externality on the losers, bids must account for both the value of winning the auction and the negative value of losing brought about by rivals reducing their costs. Experimental treatments differ in the severity of the ne...

This paper considers three firms that engage in an R&D contest to develop a new profitable technology. For a broad range of parameters, the firm that leads the contest (i.e., has the highest probability of success) is better-off licensing or selling its superior interim knowledge to one of the two lagging firms or to both rather than holding on to its lead. Although transferring interim R&D kno...

By means of so-called virtual or shadow prices, short-run factor demands, short-run marginal costs, etc. can be derived from any long-run cost function. The traditional approach (short-run/restricted/conditional/variable cost functions) is criticized, and it is also shown that technological change, scale e!ects, etc. can be added to any cost function by means of disembodied factor-augmenting e$...

We investigated the effect of maternal sire on early pregnancy failure (between D0, day of insemination and D90) in their progeny during the first and second lactations (n=3508) in the Holstein breed. The estimated breeding value (EBV) for cow fertility of 12 bulls (reliability⩾0.95) was used to create the following three groups: low, medium and high EBV (EBV from -0.7 to 1 expressed as genetic...

The objective is to study the astigmatism induced after phacoalternative surgery in order improve quality of surgery. This was a prospective and descriptive cross-sectional carried out at Donka University Hospital Conakry from july 2021 january 2022, i.e. duration 7 months, on 100 operated eyes. It involved eyes, by with an upper limbal incision least 6 mm implantation lens bag. Automatic refra...

The deflection measurements made using Falling Weight Deflectometers (FWDs) are widely used in the back-calculation of pavement layer moduli. Pavement structural characteristics, changes temperature, and other related factors exert a significant effect on measurements. Therefore, three machine learning methods—Classification Regression Tree (CART), Random Forest (RF), Gradient Boosting Decision...

_____________________________________________________________________ We ask whether the objective of egalitarian allocation of a merit good could be achieved by making the good available at multiple outlets charging different money and time prices. Differential pricing could separate high and low wage buyers across outlets, and proportional allocation of supply could ensure that consumption is...