Child labor, school attendance and access to health care services by children: evidence from Ghana

The paper develops a simple two-period model relating child labor, child school attendance and child health care access in LDCs showing that child labor is positively correlated to access to health care services. In fact, higher medical expenditure generates better health and, therefore, higher child productivity. Accumulation of human capital, which generates higher future utility, comes at the expense of current productivity and consumption. The optimal choice of child labor is such that the marginal benefit of schooling is equal to the marginal productivity of child labor, which is enhanced by additional medical expenditure. Under this theoretical set-up we expect medical expenditure and child labor to be positively correlated, with parents caring more for their children if they contribute to household income. We explore these relationships using a micro data set from Ghana LSS for the year 1999. Empirical results confirm the model theoretical predictions.Child labor; Health care demand; Human capital; Latent variables; multivariate Probit; Unobserved heterogeneity; LDCs

Memory for prices and the euro cash changeover: An analysis for cinema prices in Italy

The question addressed by this study is whether consumers remember past prices correctly. We test Italian citizensÂ’ memory for cinema prices with questionnaires distributed to moviegoers. The analysis concentrates on the memory of pre-euro prices, but the recall for a more recent period is also investigated. The results show that only a small percentage of respondents recalled the correct price, and that the average prices recalled were much lower than the actual pre-euro prices and dated back to years before the changeover. Price recall is less accurate for the respondents who perceive higher and more persistent inflation; it is also worse for the older respondents and for the less frequent movie-goers.prices, memory, perceptions, euro

A New Real Time Shape Acquisition with a Laser Scanner: First Test Results

Abstract The first results of a new method for real-time shape acquisition with a laser scanner are presented. The new method is essentially based on the use of a laser beam and a web-cam. A digital filter parameters identification was studied for the laser line detection in the image. After this, a model for the reconstruction in real-time of the laser line in the space was developed. The firsttest rig was just conceived to validate the method; hence, no high resolution cameras were adopted. Nevertheless, the tests have showed encouraging results. Tests were made on both plane and non-plane surfaces. First of all, it was confirmed that it is possible to calibrate the intrinsic parameters of the video system, the position of the image plane and the laser plane in a given frame, all in the same time. Moreover the surface shapes were recognized and recorded with an appreciable accuracy. The tests also showed that the proposed method can be used for robotic applications, such as robotic kinematic calibration and 3D surfaces recognition and recording. For this last purpose, the test rig is fitted on a robot arm that permits to the scanner device to ‘observe’ the 3D object from different and known positions

Robot Assisted 3D Shape Acquisition Optical Systems

In this chapter, a short description of the basic concepts about optical methods for the acquisition of three-dimensional shapes is first presented. Then two applications of the surface reconstruction are presented: the passive technique Shape from Silhouettes and the active technique Laser Triangolation. With both these techniques the sensors (telecameras and laser beam) were moved and oriented by means of a robot arm. In fact, for complex objects, it is important that the measuring device can move along arbitrary paths and make its measurements from suitable directions. This chapter shows how a standard industrial robot with a laser profile scanner can be used to achieve the desired d-o-f. Finally some experimental results of shape acquisition by means of the Laser Triangolation technique are reported

Precautionary saving and health risk evidence from the Italian households using a time series of cross sections

In this paper we analyse the importance of precautionary saving in Italy. In contrast to previous studies, we focus on two contemporaneous sources of uncertainty, income and health expenditures, to explain the presence of precautionary saving. The major changes occurred in public health care policies from 1985 to 1996 have caused households to pay a larger share of their out-of-the-pocket medical expenditures. These events have caused households to face both a higher expected mean and a larger variance of health expenditures. Moreover, the economic recession occurred in the early ‘90s and the Maastricht requirements led to general worsening of future expectations of income. We therefore expect consumers to react to this uncertainty by generating precautionary saving. We test this prediction using an Euler equation augmented with the presence of the variance of income and health expenditure shocks. By using a time series of cross sections from the ISTAT household budget survey, we find strong support for precautionary saving as a response to health uncertainty

Memory for symmetry and perceptual binding in patients with schizophrenia

The present study investigated the use of perceptual binding processes in schizophrenic (SC) patients and matched healthy controls, by examining their performance on the recall of symmetrical (vertical, horizontal and diagonal) and asymmetrical patterns varying in length between 2 and 9 items. The results showed that, although SC patients were less accurate than controls in all conditions, both groups recalled symmetrical patterns better than asymmetrical ones. The impairment of SC patients was magnified with supra-span symmetrical arrays, and they were more likely to reproduce symmetrical patterns as asymmetrical, particularly at medium and high length levels. Hierarchical regression analyses further indicated that the between-group differences in the recall of supra-span vertical and horizontal arrays, which require a greater involvement of visual pattern processes, remained significant after removing the variance associated with performance on asymmetrical patterns, which primarily reflects intrafigural spatial processes. It is proposed that schizophrenia may be associated with a specific deficit in the formation and retrieval of the global visual images of studied patterns and in the use of the on-line information about the type of symmetry being tested to guide retrieval processes. © 2013 Elsevier B.V

How the Energy Price Variability in Italy Affects the Cost of Building Heating: A Trnsys-Guided Comparison between Air-Source Heat Pumps and Gas Boilers

The paper investigates the variation in building thermal energy demand for different indoor air set-point temperature and presents an economic analysis comparing the cost of a heating generation system based on an air-to-water heat pump and a gas boiler. Dynamic simulations were performed considering three different residential building characteristics of the Italian building stock placed in different Italian municipalities: Milan, Rome and Naples. An economic analysis was carried out considering the gas and electricity prices related to the years 2019–2022 provided by Italian Regulatory Authority for Energy, Networks and Environment (ARERA). The analysis showed the competitiveness of the heat pump compared with the gas boiler as a heating generation system in terms of annual costs for heating in almost all the scenarios considered and also showed an important reduction in building thermal energy demand if the set-point temperature was reduced, even by 1 ◦C