In this paper, image noise characterization based on digital camera RAW data is studied and three different imaging technologies are compared. The three digital cameras used are Canon EOS D30 with CMOS sensor, Nikon D70 with CCD sensor and Sigma SD10 with Foveon X3 Pro 10M CMOS sensor. Due to different imaging sensor constructions, these cameras have rather different noise characteristics. The ...

In this paper we address the question of deterministic cycles in a Ramsey model with heterogeneous in nite-lived agents and borrowing constraints, augmented to take into account the case of elastic labor supply. Under usual restrictions, not only we show that the steady state is unique, but also we clarify its stability properties through a local analysis. We nd that, in many cases, the introdu...

This paper presents necessary and sufficient conditions for unambiguous changes in wage inequality in a dual economy, based on analysis of the entire Lorenz curve. These conditions are then used to analyze the distributional consequences of various types of economic growth. In particular, it is shown that capital accumulation or technical progress in agriculture is likely to reduce wage inequal...

Kocherlakota and Pistaferri (2007) describe two different models (Private Information Pareto Optimal and Incomplete Markets) of how households partially insure themselves against idiosyncratic shocks. They demonstrate that the models differ in terms of their implications for real exchange rates. In this paper, we use data from a wide range of countries, and document that there is a statististic...

We consider a class of cost sharing problems with the following features: agents are ordered in terms of their needs for a public facility, and satisfying a given agent implies satisfying all agents with smaller needs than his. We show that the nucleolus is the only rule satisfying equal treatment of equals, last-agent cost additivity, and last-agent consistency. This characterization reveals t...

The aim of this study was to determine how different types of P. vivax affect clinical symptoms and parasitaemia clearance. Blood was collected from individuals from Pará State, Brazil. The patients were treated as chloroquine plus primaquine. P. vivax were typed daily till D7 and again on D30. Now we can confirm a previously reported correlation between P. vivax genotype and response to chloro...

Overlapping labour markets arise when some types of workers do not meet employers with some types of jobs. For example, skilled workers could seek high-skill or low-skill jobs, but low skill workers could be limited to low-skill jobs. The paper derives conditions for equilibrium and efficiency, distinguishes reducible from irreducible overlapping labour markets, and describes distributional imp...

I study a problem of repeated moral hazard in which the effect of effort is persistent over time: each period’s outcome distribution is a function of a geometrically distributed lag of past efforts. I show that when the utility of the agent is linear in effort, a simple rearrangement of terms in his lifetime utility translates this problem into a related standard repeated moral hazard. The solu...

We introduce non-homothetic preferences into an R&D based growth model to study how demand forces hape the impact of inequality on innovation and growth. Inequality affects the incentive to innovate via a price effect and a market size effect. When innovators have a large productivity advantage over traditional producers a higher extent of inequality tends to increase innovators’prices and mark...

Background: Separation-related disorders are prevalent in dogs and can result problem behaviours such as inappropriate elimination, destructive behaviour, distress vocalizations which occur when an owner is absent or perceived absent. Numerous natural products marketed for managing anxiety dogs; however, few, if any, of these have documented evidence efficacy veterinary behaviour. Purpose: This...