Hurst exponent (H) measured from R/S ratio, is being used as a measure to find predictability of a time series. The larger the H value, the stronger is the trending trait in the time series. In this paper, we estimated R/S ratio of several stock indexes of Indian market for 10 years. Though the overall Hurst exponent values for the selected series were close to 0.5, the value varied widely on p...

Low-income households may face higher food prices for three reasons: (1) on average, low-income households may spend less in supermarkets—which typically offer the lowest prices and greatest range of brands, package sizes, and quality choices; (2) low-income households are less likely to live in suburban locations where food prices are typically lower; and (3) supermarkets in low-income neighbo...

We propose a new approach to the model calibration problem, which takes into account the multiplicity of solutions. Starting from a prior distribution on model parameters and a set of observed option prices, we propose a probabilistic construction which yields an arbitrage free pricing rule consistent with these observed option prices. Our approach yields a simple Monte Carlo algorithm for simu...

We used a unique dataset of 30,533 off-lease vehicle auction sales (10,898 offline and 19,635 online) to examine the economic impact of adding an Internet sale channel to a firm’s existing channel portfolio. Our findings suggest that an Internet channel adds economic benefit in several ways. First, the data suggest that prices are significantly higher and that the dispersion of prices for vehic...

To capture the full brightness range of natural scenes, cameras automatically adjust the exposure value which causes the brightness of scene points to change from frame to frame. Given such a video sequence, we introduce a system for tracking features and estimating the radiometric response function of the camera and the exposure difference between frames simultaneously. We model the global and...

Medicare Part D enrollees face a complicated decision: they dynamically choose prescription drug consumption in each period given difficult-to-find prices and a non-linear budget set. We use Part D claims data to estimate a flexible model of consumption that accounts for non-linear prices, dynamic responses, and salience. We use reduced form price responses from a linear regression of consumpti...

This paper examines the causal relationship between stock prices and macroeconomic aggregates in Iran, by applying the techniques of the long–run Granger non–causality test proposed by Toda and Yamamoto (1995). We test the causal relationships between the TEPIX Index and the three macroeconomic variables: money supply, value of trade balance, and industrial production using quarterly data for t...

(UC Berkeley/LBNL) for embarking on the initial analysis that formed the basis for this report, Eric Lantz (NREL) for guidance on the use of NREL's turbine cost and scaling model, and Naïm Darghouth (LBNL) for compiling data on wind turbine imports. The authors would also like to thank the following individuals for reviewing earlier drafts of this manuscript: and several anonymous reviewers. Of...

OBJECTIVE To calculate sustainable generic prices for 4 tyrosine kinase inhibitors (TKIs). BACKGROUND TKIs have proven survival benefits in the treatment of several cancers, including chronic myeloid leukaemia, breast, liver, renal and lung cancer. However, current high prices are a barrier to treatment. Mass production of low-cost generic antiretrovirals has led to over 13 million people bei...

The private for-profit sector is an important source of treatment for malaria. However, private patients face high prices for the recommended treatment for uncomplicated malaria, artemisinin combination therapies (ACTs), which makes them more likely to receive cheaper, less effective non-artemisinin therapies (nATs). This study seeks to better understand consumer antimalarial prices by document...