Waitresses’ facial cosmetics and tipping: A field experiment

It had been found that cosmetics do improve female facial attractiveness when judgments were made based on photographs. However, these studies were conducted only on laboratory and field studies are scarce in the literature and none of them have tested the effect of customers’ behavior. An experiment was carried out in restaurant in order to verify if waitresses’ makeup is associated with an increase in patrons’ tipping behavior. Female waitresses with and without makeup were instructed to act in the same way than usual with their patrons. Results showed that the makeup condition was associated with a significant increase in tipping behavior of the male customers.     

Patenting and the early‐stage high‐technology investor: evidence from the field

We discuss the importance of patenting to the venture capital investor in high‐technology firms. While literature suggests that patenting will have an impact on the nature and level of investment, the investors themselves are keen to suggest otherwise. We investigate this issue by the use of new primary‐source empirical data, gathered by fieldwork methods. Our results help explain a link between the existence of patenting and the level of investment made. We further support our analysis with illuminating quotes from investors currently active in the field.     

Capacity flexibility allocation in an outsourced supply chain with reservation

We consider a contract manufacturer that serves a limited number of outsourcers (customers) on a single capacitated production line. The outsourcers have different levels of demand uncertainty and the contract manufacturer faces the question how to allocate the contractual capacity flexibility in an optimal way. The contractual capacity flexibility is a contract parameter that sets the amount of demand the contract manufacturer is obliged to accept from the outsourcers. We develop a hierarchical model that consists of two decision levels. At the tactical level, the contract manufacturer allocates the capacity flexibility to the different outsourcers by maximizing the expected profit. Offering more flexibility to the more uncertain outsourcer generates higher expected revenue, but also increases the expected penalty costs. The allocated capacity flexibilities (determined at the tactical level) are input parameters to the lower decision level, where the operational planning decisions are made and actual demands are observed. We perform a numerical study by solving the two-level hierarchical planning problem iteratively. We first solve the higher level problem, which has been formulated as an integer program, and then perform a simulation study, where we solve a mathematical programming model in a rolling horizon setting to measure the operational performance of the system. The simulation results reveal that when the acceptance decision is made (given the allocated capacity flexibility decision), priority is given to the less uncertain outsourcer, whereas when the orders are placed, priority is given to the most uncertain outsourcer. Our insights are helpful for contract manufacturers when having contract negotiations with the outsourcers. Moreover, we show that hierarchical integration and anticipation are required, especially for cases with high penalty cost and tight capacities.     

The last fifteen years of stagnation in Italy: a business cycle accounting perspective

In this paper, we investigate possible sources of declining economic growth in Italy beginning near the middle of the 1990s. A long-term data analysis suggests that the poor performance of the Italian economy cannot be blamed on an unfortunate business cycle contingency. Other countries of the euro area have shown better performance, and the macroeconomic data indicate that the Italian economy has not grown at the same rate as these other European economies. We investigate the sources of economic fluctuations in Italy by applying the business cycle accounting procedure introduced by Chari et al. (Econometrica 75(3):781–836, 2007). We analyze the relative importance of efficiency, labor, investment and government wedges for business cycles in Italy during the 1982–2008 period. We find that individual wedges have played different roles during this period; however, the efficiency wedge is shown to be the factor most responsible for the stagnation phase that began in approximately 1995. Our findings also show that the decline in labor market distortions that occurred in Italy during the 1990s alleviated the stagnation effect somewhat and prevented an even more abrupt slowdown in per capita output growth.     

Price-wage dynamics in a transition economy: The case of Poland

In this paper we analyse the wage-price relationship of an economy in transition characterized by important structural changes. It is known (see Perron, 1989) that structural breaks in stationary time series can induce apparent unit roots. The stationarity analysis of the series employed in the present model is conducted jointly with the assumption that the breakpoint location is unknown. We follow a testing procedure recently proposed by Zivot and Andrews (1992). Cointegration analysis of wages and prices in the presence of structural breaks finds empirical evidence in favour of two cointegrating vectors involving prices and wages. Our analysis focuses on the different structural behaviour of the price-wage dynamic relationship in the short and long term; we also demonstrate the relative importance of import prices as a source of wage-price fluctuations.     

Exchange rate, inflation and unemployment in East European economies: the case of Poland and Hungary*

The aim of the paper is to model the impact of exchange rate on both inflation and unemployment variables in economies which are characterized by important structural changes, i.e. a transition phase moving from centralized economies towards market economies. This phenomenon, which is common to the East European countries, stressed different effects both for what concerns the behaviour of economic agents and for what concerns fiscal and monetary measures adopted by governments and aiming to keep under control the inflation–unemployment trade off. Time series relationships between these variables are investigated within an econometric model. Economic theory and the available data on the hypothetically relevant variables, along with the consideration of the main facts occurred in the period under study, characterize our information set. It is found that single equation analysis yields inefficient inference relative to the whole system analysis, and important structural changes are detected which reflect possible breaks in the structure of the economic system along with a change in economic policy.