Information technology (IT) expenditures in different developing nations of the world have been impressive but controversial lately. Research is needed to know how IT expenditures are growing in these nations. Do stages of IT development or price drops in IT infrastructure influence such growth? We intend to explore these issues with various growth models, using data from 14 nations (constraine...

This paper examines 4 million price observations over an eight month time period for 1000 of the best-selling consumer electronics products found on the price comparison site Shopper.com. We find that observed levels of price dispersion vary systematically with the number of firms listing price quotes for a given product. For example, for products where only two firms list prices, the gap betwe...

This.chapter.provides.an.overview.of.comparison-shopping.services..Four.research.topics.are.covered:. How.to.design.a.good.shopbot?.How.Shoppers.using.the.comparison-shopping.services?.What.is.the. strategic.use.of.comparison-shopping.as.a.new.channel.by.online.vendors?.And.what.is.the.impact.of. comparison-shopping.on.existing.price.equilibrium.and.electronic.market.structures?.Emerging.resear...

One of the challenges in comparing learning performance across multiple conditions is to develop an appropriate evaluation. We identify four candidate metrics and apply them in an empirical example, providing contrast to differences between the metrics. We propose a set of criteria that learning comparison metrics should satisfy, evaluate the four metrics using the identified criteria, and conc...

This paper outlines the design of a code comparison tool, ctcompare, which use short sequences of lexical tokens from source code as a key in an inverted index to perform the code comparison. This technique allows the comparison of multiple source code trees simultaneously. Other significant features of the tool include the definition of a serialised token stream format which allows the indepen...

The performance of six popular continuous-energy Monte Carlo and multigroup transport codes has been compared for a simple spherical model of the Bigten critical assembly using ENDF/B-VII nuclear data. This “code comparison” exercise was supplemented with a few “data testing” results using different nuclear data evaluations. This particular critical assembly was chosen because it is sensitive t...

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Different groups are involved in the MERIS vicarious activities. Most of the time, the prediction of the incoming radiance to the sensor needs radiative transfer computations. An inter comparison exercise is reported here based on radiative transfer computations with different codes applied on suitable test cases for vicarious calibration. Because the top of atmosphere signal over bright target...