La adoption de la agricultura ecologica por parte de los agricultores implica un elevado grado de incertidumbre acera de la rentabilidad futura de la innovacion, lo cual hace que la implantacion de este metodo de cultivo y de explotacion agraria no sea immediata, sino un proceso de difusion...

The successful introduction of new durable products plays an important part in helping companies to stay ahead of their competitors. Decisions relating to these products can be improved by the availability of reliable pre-launch forecasts of their adoption time series. However, producing such...

Influence maximization problem is about finding a small set of nodes from the social network as seed set so as to maximize the range of information diffusion. In this paper, the theory of coritivity and method of finding core nodes in networks are introduced to deal with this problem. From the...

This paper introduces a new estimator to measure the ex-post covariation between high-frequency financial time series under market microstructure noise.  We provide an asymptotic limit theory (including feasible central limit theorems) for standard methods such as regression, correlation...

We consider a financial market model with a large number of interacting agents. Investors are heterogeneous in their expectations about the future evolution of an asset price process. Their current expectation is based on the previous states of their neighbors and on a random signal about the...

Natural gas is a finite resource that may be estimated directly, through geophysical methodologies, or indirectly, through historical production data. The rapid growth in consumption of this limited natural resource, strictly connected to the oil economy, may lead to its imminent depletion and a...

In the past several decades, new-product diffusion models has been an active area of research in marketing (see, e.g., Mahajan, Muller, and Wind 2000, and Mahajan and Wind 1986). Such models are useful because they can provide important insights into the timing of initial purchase of new...

Existing innovation diffusion models assume that individual experience with the product is always communicated positively through word-of-mouth. For certain innovations, however, this assumption is tenuous since communicators of the product experience may transfer favorable, unfavorable, or...

Getting a new product adopted - even if it has obvious advantages - is difficult. Many innovations require a long period from the time they become available to the time they are widely adopted. This study was conducted to determine some characteristics of new product diffusion processes in...