Auctions have emerged as the primary means of assigning spectrum licenses to companies wishing to provide wireless communication services. Since July 1994, the Federal Communications Commission (FCC) has conducted 33 spectrum auctions, assigning thousands of licenses to hundreds of firms. Countries throughout the world are conducting similar auctions. I review the current state of spectrum auct...

Market design plays an essential role in promoting innovation. I examine emission allowance auctions, airport slot auctions, spectrum auctions, and electricity markets, and demonstrate how the market design can encourage innovation. Improved pricing information is one source of innovation. Enhancing competition is another driver of innovation seen in all of the applications. Market design foste...

WR22 = HD 92740 is a bright (V 6.4 $mag$), intrinsically luminous, double-line WN7h + O9III-V binary exhibiting one sharp 8\% deep eclipse near periastron in its elliptical (e 0.6) 80-day orbit, when the WR-star passes front of O star, with no secondary eclipse. We apply two models (L96, A13) to probe optical space-based light curves from {\em BRITE-Constellation}, including three separate, com...

We generalize the concept of local states (LS) for prediction high-dimensional, potentially mixed chaotic systems. The construction generalized (GLS) relies on defining distances between time series basis their (non-)linear correlations. demonstrate capabilities our approach based reservoir computing (RC) paradigm using Kuramoto-Sivashinsky (KS), Lorenz-96 (L96) and a combination both In system...

We study a major new entry in the French mobile telecommunications market, followed by introduction of fighting brands three incumbents. Using an empirical oligopoly model, we find that incumbents’ brand strategies are difficult to rationalize as unilateral best responses. Instead, their consistent with breakdown tacit semi-collusion: before entry, incumbents could successfully coordinate on re...

The Doubtful Profitability of Foggy Pricing* A particular tariff option is said to be foggy when another option or a combination of other tariff options offered by the same firm is always less expensive regardless of the usage profile of any customer. Alternatively, tariff fogginess may refer to the whole set of tariff options and it is related to the low likelihood that a particular tariff opt...

Radio spectrum is an essential input for delivering mobile communication services. Traditionally blocks of licensed spectrum have been exclusively controlled by its buyer. However, in recent years there has been an increasing focus by regulators on developing policies and practices which ensure a more effi cient utilization of the spectrum resource, among which spectrum sharing is one of the mo...

How do social interactions shape collective action, and how are they mediated by networked information technologies? We answer these questions studying the Temperance Crusade, a wave of anti-liquor protest activity spreading across 29 states between 1873 1874. Relying on exogenous variation in network links generated railroad accidents, we provide causal evidence driving diffusion movement, rai...

The focus of the Japanese local telecommunications policy is moving toward how to solve the problem of the digital divide that accompanies the spread of high-speed and broadband services. This paper estimates the translog cost function of two outputs, the standard telephone service and the leased circuit service, and measures the regional gap of those stand-alone costs and incremental costs. Th...

We examine the e¤ects of mobile termination rate regulation in asymmetric oligopolies. We do this by extending existing models of asymmetric duopoly and symmetric oligopoly where consumer expectations about market shares are passive. We …rst calibrate product di¤erentiation parameters using detailed data from the Spanish market from 2010. Next, we predict equilibrium outcomes and welfare e¤ects...