Method for predicting pump cavitation performance

Method requires the availability of two sets of appropriate data for each pump to be analyzed. At least one set of the data must provide measurable thermodynamic effects of cavitation

Quantum Gaussian Channels with Additive Correlated Classical Noise

We provide a model to study memory effects in quantum Gaussian channels with additive classical noise over an arbitrary number of uses. The correlation among different uses is introduced by contiguous two-mode interactions. Numerical results for few modes are presented. They confirm the possibility to enhance the classical information rate with the aid of entangled inputs, and show a likely asymptotic behavior that should lead to the full capacity of the channel

Ultrarelativistic limit of a Rarefied Gas with Internal Structure

The aim of this letter is to check the ultra-relativistic limit of a recent model proposed by Pennisi and Ruggeri [Ann. Phys. 377, 414 (2017)] for a relativistic gas with internal structure. Considering an Eulerian fluid we prove that there exists a critical value of the degree of freedom such that for smaller values of this quantity the ultra relativistic limit of the energy of a gas with structure is the same as the Synge energy for monatomic gases, while for larger degrees of freedom the energy increases with the degree of freedom itself. The limiting equations are accompanied with the explicit expression of the characteristic velocities of the hyperbolic system.Comment: 4 pages, 2 figure

Privacy of a lossy bosonic memory channel

We study the security of the information transmission between two honest parties realized through a lossy bosonic memory channel when losses are captured by a dishonest party. We then show that entangled inputs can enhance the private information of such a channel, which however does never overcome that of unentangled inputs in absence of memory.Comment: RevTex file, 4 pages, 2 figure

Experimental studies on thermodynamic effects of developed cavitation

A method for predicting thermodynamic effects of cavitation (changes in cavity pressure relative to stream vapor pressure) is presented. The prediction method accounts for changes in liquid, liquid temperature, flow velocity, and body scale. Both theoretical and experimental studies used in formulating the method are discussed. The prediction method provided good agreement between predicted and experimental results for geometrically scaled venturis handling four different liquids of widely diverse physical properties. Use of the method requires geometric similarity of the body and cavitated region and a known reference cavity-pressure depression at one operating condition

Killing Two Birds With The Same Stone? The Effectiveness Of Food Transfers On Nutrition And Monetary Poverty

Currently popular multidimensional approaches to poverty face the challenge of being translated into effective poverty reduction strategies. Central to this challenge is identifying policy interventions that can generate mutually reinforcing outcomes across different dimensions. With this aim we assess the impact of one particular intervention - food transfers- on both monetary and non-monetary dimensions of poverty in Peru. Using household survey data we find that the overall impact of the transfers is progressive from both an income and a nutritional perspective, though much of the benefit is nevertheless captured by the non-poor. In terms of nutritional impact, we find that food transfers increase household access to food, but that their impact on child malnutrition is not statistically different from the effect of other income sources. In terms of impact on monetary poverty, we find that the direct impact of food transfers is enhanced by the incentives they provide to increased work effort for certain groups. Overall, our results suggest that the pursuit of different poverty reduction objectives can build on significant synergies between objectives, though much could still be done to enhance the nutritional impact of food transfers in Peru.

Participatory Methods in the Analysis of Poverty: A Critical Review

This paper reviews and analyses the literature on participatory methods in poverty analysis. The popularity of participatory poverty assessments has greatly increased in the last decade, and a growing number of development agents is adopting some form of participatory methodology. This spread however seems to be possible even without a shared understanding of what participation stands for. This paper starts by introducing the broad lines of the debate on participation, before focusing more specifically on participatory methods in poverty analysis. After having discussed the tools as well as the insights they provide, some recent evidence comparing participatory and non-participatory methods is presented. Such literature allow to highlight both the strengths and the weaknesses of participatory assessments, as well as opening the way for new approaches integrating elements of both. In the last analysis, however, the challenge to the non-extractive nature of the methodology, posed by the transposition of participatory techniques from the project context in which they were developed to the policy one, remains serious and poses questions on what 'listening to the voices of the poor' means.