We design a Generalized Position Auction for players with private values and private budget constraints. Our Mechanism is a careful modification of the Generalized English Auction of Edelman, Ostrovsky and Schwarz (2007). By enabling multiple price trajectories that ascent concurrently we are able to retrieve all the desired propertied of the Generalized English Auction, that was not originally...

The same contestants often meet repeatedly in contests. Behavior in a contest potentially provides information with regard to one’s type and can therefore in‡uence the behavior of the opponents in later contests. This paper shows that if e¤ort is observable, this can induce a ratchet e¤ect in contests: high ability contestants sometimes put in little e¤ort in an early round in order to make the...

this research aims at presenting a consolidated model of data envelopment analysis (dea) technique and value engineering to select the best manufacturing methods for gate valve covers and ranking the methods using topsis.to do so, efficiency evaluation indices were selected based on the value engineering approach and different manufacturing methods were evaluated using dea technique.finally, ef...

the efficiency of induction motors decreases at light loads. efficiency optimizer control systemsadjust the motor flux value to achieve the best efficiency in a wide range of load variations. reduced fluxoperation has some other benefits such as power factor improvement and torque ripple reduction. the latter isan important issue in a direct torque controlled induction motor drive. in this pape...