In communication, information, and other industries, three-part tariffs are becoming increasingly popular. A three-part tariff is defined by an access price, a usage allowance, and a marginal price for any usage in excess of the allowance. The nonlinear-pricing literature has focused primarily on two-part tariffs. We show that consumer behavior differs under three-part tariffs, in particular re...

This paper discusses a system for online new event detection as part of the Topic Detection and Tracking (TDT) initiative. Our approach uses a single-pass clustering algorithm, which includes a time-based selection model and a thresholding model. We evaluate two benchmark systems: The first indexes documents by keywords and the second attempts to perform conceptual indexing through the use of t...

This paper aims at showing heterogeneity in the degree of exchange rate pass-through to import prices in major advanced economies at three di¤erent levels: 1) across destination markets ; 2) across types of exporters (distinguishing developed economy from emerging economy exporters); and 3) over time. Based on monthly data over the period 1991-2007, the results show …rst that large destination ...

in this paper the trade restrictiveness of agricultural policies in iran was measured by the triindex for the nine major agricultural products including wheat, rice, barely, maize, soybean,meat (beef meat), soybean oil, sugar and banana over the period 1981 to 2007. the main resultsindicate that there is no trend in above index and high volatility especially in 2006 and 2007years due to conside...

Keyword search is emerging as the standard way to access information of any kind. Following this trend, several approaches to keyword search over relational databases have been proposed recently. Most of them build tree-shaped solutions that connect tuples matching the given keywords. In this paper, we propose a novel technique to this problem that generates solutions by simply combining joinin...

This brief presents a survey of analog high frequency design challenges for continuous time integrator to be used in low pass ∑Δ Modulator. Such oversampling modulators are fast replacing old Nyquist based modulators in analog to digital converters used in RF front end of transceivers. Possible solutions to some of the most common but stringent analog issues are also presented. This communicati...

We document how product quality responds to exchange rate movements and quantify the extent which these changes affect aggregate pass-through into export prices. analyze substantial sudden appreciation of Swiss franc post removal 1.20-CHF-per-euro lower bound in 2015 using data representing a large share universe goods exports from Switzerland. find that firms upgrade their products after appre...

In this paper, a new CMOS current-mode single input and multi-outputs (SIMO) universal filter and quadrature oscillator with a similar circuit are proposed. The circuits only consist of three Current differencing transconductance amplifiers (CDTA) and two grounded capacitors, which are resistorless, and they are suitable for monolithic integration. The universal filter uses minimum CDTAs and pa...