The award of the digital dividend can consolidate auctions as the preferred mechanism for spectrum allocation. Knowing in advance an estimate of what the results of an auction with these characteristics could be would be unquestionably useful for those in charge of designing the process, even if at the end another method such as a beauty contest is chosen. This article provides a simulation of ...

This paper proposes a concept of how to collect toll on highways. Unlike any existing method, the proposed approach requires no structure to be built on highways for the toll collection purpose and drivers are not required to stop or even slow down to pay toll. Toll must be prepaid in advance and a driver must keep a toll ticket as proof of payment. We apply public key cryptographic operations ...

in this research, the steady-state flow filed around a 3d body and rotor configuration of the robin helicopter is simulated. the rotor is modeled by an actuator disk. for this purpose, an annular computational domain replaces the rotor and some modeled source terms are added to the momentum equations. this modeling of rotor considerably speed up computational time. the flow field over this heli...

We study a buyer-seller problem in which the good is information and there are no property rights. The buyer is reluctant to pay for information whose value he does not know, but the seller cannot credibly reveal this value without disclosing the information itself. Information comes as divisible hard evidence. We show how the seller can appropriate a substantial fraction of the value through g...

the secure embedding scheme (see Section II), it is hard to generate a watermarked version of c which has a low correlation with k 0. An estimation attack usually yields a watermarked object that still correlates well with k 0 ; a judge will reject the accusation on such an object, as it can only originate from a malicious seller (k 0 is only available to the seller). • Finally, can attempt to ...

In electronic commerce markets, agents often should acquire multiple resources to fulfil a high-level task. In order to attain such resources they need to compete with each other. In multi-agent environments, in which competition is involved, negotiation would be an interaction between agents in order to reach an agreement on resource allocation and to be coordinated with each other. In recent ...

furrow irrigation is the most common type of surface irrigation. determine the advance and recession time in the field is required the accurate measurement and this can be costly and time consuming. winsrfr model is used for simulation furrow irrigation by zero inertia and kinematic wave engines. using this model, advance time, reaction time, infiltration depth, runoff depth and application eff...

We study the second-price offer feature of eBay auctions in which the seller has multiple units. Perhaps surprisingly, the opportunity to make second-chance offers can reduce seller profit. This happens if her marginal cost function is sufficiently steep. Hence, sellers should be wary about the possibility that buyers anticipate second-chance offers, and it may be advantageous for a seller to a...