This paper estimates the markup for the Mexican manufacturing sector to detect the impact of trade liberalization on market power. Using Hall’s proposal that states that a procyclical Solow residual is an indication of market power, this research estimates the markup for different periods to detect the change in market power after trade liberalization was implemented. We account for the potenti...

MOST PEOPLE AGREE that stock prices sometimes behave in strange ways. Going beyond this simple observation typically proves more difficult. For at least the past quarter century, economists have been well aware that the variation of stock prices does not nicely match the familiar bell-shaped normal distribution.1 The problem is too many extreme movements. Very large increases or decreases would...

Channel repertoires, the subsets of available channels that viewers actually watch, have typically been measured by relying on respondent recall. Using minute-by-minute peoplemeter data from Beijing, this study operationalized channel repertoire as the channels actually watched for 10 or more consecutive minutes during the week. On average, Chinese viewers used 13 channels, about one third of t...

This paper describes a new head detection method for people counting in crowded environments from a single camera. Our method adopts skeleton graph to distinguish person among people in crowded enviroments. The usage of skeleton graph is the main difference between this method and the traditional ones. Firstly, the skeleton graphs are calculated for each selected blob in the scene after foregro...

A significant nutrient load can be generated internally by publicly owned treatment works (POTWs). These nutrients can be found in the reject water, also known as side streams, of many municipal wastewater and sewage sludge treatment processes. These side streams include the reject stream from membranes, supernatant liquid from sludge digesters, and the centrate/filtrate return stream from sewa...

I show that multiproduct firms suffer less than single-product firms from the “Diamond Paradox”. Equilibrium prices are high because rational consumers understand that visiting a store exposes them to a hold-up problem when they have search costs. However a store with more products attracts more consumers with low valuations, and therefore charges lower prices. Advertising a few products at low...