Examining a state-dependent pricing model in the presence of menu costs and dynamic duopolistic interactions, this paper claims that the assumption regarding market structure is crucial for identifying the menu costs for price changes. Prices in a dynamic duopolistic market can be more rigid than those in more competitive markets, such as a monopolistic-competition market. Therefore, the estima...

Pulping trials were carried out using MEA and the soda process comparing their pulping potentials. The operating conditions such as concentration of cooking liquor (50%, 75%, 100%) for (10%, 15%, 20%) NaOH, maximum temperature (150oC, 160oC, 170oC) time (60, 90, 120minutes) both processes investigated systematically to establish optimal conditions. agro-biomass used in this investigation is Sug...

We have accepted a total of 42 articles for this special issue, which together have earned 80,000 views as of June 2, 2016, showing the popularity of illusions as a subject for both authors and readers. The papers address conceptual and perceptual illusions, typically using psychophysical, computational, or phenonomological methods, or some mixture of these. Narrowly defined, an illusion is a m...

© 2 0 0 1 m a s s a c h u s e t t s i n s t i t u t e o f t e c h n o l o g y, c a m b r i d g e , m a 0 2 1 3 9 u s a — w w w. a i. m i t. e d u m a s s a c h u s e t t s i n s t i t u t e o f t e c h n o l o g y — a r t i f i c i a l i n t e l l i g e n c e l a b o r a t o r y 1 ABSTRACT Brightness judgments are a key part of the primate brain's visual analysis of the environment. There is ge...

Mach bands, the illusory brightness maxima and minima perceived at the initiation and termination of luminance gradients, respectively, are generally considered a direct perceptual manifestation of lateral inhibitory interactions among retinal or other lower order visual neurons. Here we examine an alternative explanation, namely that Mach bands arise as a consequence of real-world luminance gr...

The properties of Electron Cyclotron Resonance Ion Sources (ECRIS) plasmas, up to now, have been largely studied on the basis of a global approach. However the design of new generation sources, able to provide high intensity beams of multiply charged ions, requires a more accurate investigation of both electron and ion dynamics. Recent experiments have demonstrated that even slight frequency’s ...

This article updates Kelly and Bruestle (2011) by illustrating how publication trends in different subject categories in economics evolved from 2007 to 2013. Using data from RePEc we show that the largest increase in the relative share was for articles published in JEL category Q (“Agricultural and Natural Resource Economics, Environmental and Ecological Economics”) over this period. Furthermor...

We provide a simple necessary and suffi cient condition for when a multiproduct demand system can be generated from a discrete choice model with unit demands.

We develop an endogenous growth model driven by externalities of both private capital and public infrastructure.

T h e general introduction of the X-ray image intensifier (11) over the last decade has opened up new possibilities for X-ray examination. The brightness of the 11, which is several thousand times higher than the conventional fluorescent screen, allows the image to be viewed in normal room lighting. If a television chain is connected, the operator has control over contrast and brightness to fur...