The Bright Side of Coulomb Blockade

We explore the photonic (bright) side of dynamical Coulomb blockade (DCB) by measuring the radiation emitted by a dc voltage-biased Josephson junction embedded in a microwave resonator. In this regime Cooper pair tunneling is inelastic and associated to the transfer of an energy 2eV into the resonator modes. We have measured simultaneously the Cooper pair current and the photon emission rate at the resonance frequency of the resonator. Our results show two regimes, in which each tunneling Cooper pair emits either one or two photons into the resonator. The spectral properties of the emitted radiation are accounted for by an extension to DCB theory.Comment: 4 pages, 4 figures + 3 pages, 1 figure supplementary materia

Simultaneous Identification of the Diffusion Coefficient and the Potential for the Schr\"odinger Operator with only one Observation

This article is devoted to prove a stability result for two independent coefficients for a Schr\"odinger operator in an unbounded strip. The result is obtained with only one observation on an unbounded subset of the boundary and the data of the solution at a fixed time on the whole domain

Estimating the money flow in the economy attributed to rotavirus disease and vaccination in the Netherlands using a Social Accounting Matrix (SAM) framework

Background: The economics of rotavirus gastroenteritis in infants <5 years old is well-known within healthcare. The financial consequences for families, employers and authorities are not so well explored. The present study evaluates how vaccine prevention changes money flows among e involved in the management of disease, and its consequences. Methods: A Social Accounting Matrix (SAM) framework has been developed reflecting the distribution of income and spending at equilibrium affected by rotavirus disease among all those concerned for 1 year. The data came from official sources and published literature. A comparison of the financial equilibrium between with and without a national rotavirus immunization program has been conducted, along with sensitivity analysis for the results. Results: The total financial cost difference at equilibrium between presence and absence of rotavirus vaccination was +euro26.758 million over one year as a net economic surplus. The payment of vaccination (euro19.194 million) by the government was offset by the increase in tax revenue (euro14.561 million) and by the lower spending in treatment care (euro7.998 million). Conclusion: Studying the financial flows between different transacting agents can demonstrate the financial burden of a disease and the benefits of its prevention on agents' income and spending

Modelling of krypton-xenon separation by dynamic fixed-bed adsorption on zeolite

International audienceCurrently noble gases are separated by cryogenic distillation, which is an expensive process with safety constraints due to the cryogenic temperatures used. Adsorptive separation, such as temperature/pressure swing adsorption, is studying as it is considered as an energy, safety and cost effective alternative. Different selective materials are described in the literature from inorganic adsorbents based on physical adsorption to new metal-organic frameworks (MOFs) based on size and chemistry. This work focuses on the description of a modelling of Kr-Xe separation by selective adsorption on a chabazite zeolite in a fixed bed column

Evaluation du cout economique de l’eau d’irrigation dans la zone office du Niger au Mali

L’objet de cet article est d’évaluer le coût économique de l’eau d’irrigation dans la zone Office du Niger (ON) au Mali. Pour l’atteinte des objectifs, deux types de coût ont été estimés (coût financier et coût économique de l’eau d’irrigation. Les données de l’enquête ont été combinées avec la revue de la littérature de l’ON et surtout avec des articles pertinents relatifs au coût économique de l’eau&nbsp; d’irrigation dans des périmètres irrigués analogues dans d’autres pays africains afin d’alimenter utilement notre analyse critique etdiscussion. Les résultats ont montré que le coût financier est 63 474 FCFA, soit 97 €1 en moyenne et le coût économique est 185 446 FCFA/ha, soit 283 €/ha en moyenne. L’évaluation du coût de l’efficience donne 6 FCFA/m3 soit 0,009 €/m3 qui est supposé très faible. La redevance de l’eau contribue en moyenne 10% à l’entretien de l’ensemble des réseaux hydrauliques. En conclusion, la redevance payée par les producteurs est un coût social qui ne prend pas en compte le coût des aménagements hydro agricoles. Sans l’intervention de l’Etat, la production rizicole dans ce système allait connaitre d’énormes problèmes de rentabilité. Mots-clés : Evaluation-Coût économique-Eau d’irrigation - Office du Niger -Mali. &nbsp; English title: Evaluation of the economic cost of irrigation water in the office du Niger in Mali The purpose of this article is to assess the economic cost of irrigation water in the Office du Niger area in Mali.To achieve the objectives, two types of cost were estimated (financial cost and economic cost of irrigation water. The data were combined with the review of the Office du Niger literature and especially with relevant articles relating to the economic cost of irrigation water in similar irrigated areas in other African countries to usefully contribute our critical analysis and discussion.The results showed that the average financial cost is about 63,474 FCFA/ha or 97 €/ha and the average economic cost is about 185,446 FCFA/ha or 283 €/ha. The cost of efficiency assessment gives 6 FCFA / m3 or 0.009 € / m3 which is assumed to be very low. Water charges contribute on average of 10% to the maintenance of all hydraulic networks. And the operators’ contribution represents only 4%.In conclusion, the royalty paid by the producers is a social cost which does not take into account the cost of hydro agricultural development. Without state intervention, rice production in this system would experience enormous problems and tertiary hydraulic networks. Keywords : Evaluation-Economic cost- Irrigation water- Office of Niger- Mali

Comparing the Analysis and Results of a Modified Social Accounting Matrix Framework with Conventional Methods of Reporting Indirect Non-Medical Costs

Background Assessing the societal perspective in economic evaluations of new interventions requires estimates of indirect non-medical costs caused by the disease. Different methods exist for measuring the labor input function as a surrogate for these costs. They rarely specify the effect of health on labor and who gains and who loses money. Social accounting matrix (SAM) is an established framework that evaluates public policies with multiple perspectives that could help. Objectives We evaluated the use of a modified SAM to assess money flows between different economic agents resulting in economic transactions following policy changes of medical interventions. Methods We compared conventional methods of measuring indirect non-medical costs related to rotavirus vaccination in the Netherlands with a modified SAM framework. To compare the outcome of each method, we calculated returns on investment (ROI) as the net amount of money per euro invested in the vaccine. One-way and probabilistic sensitivity analyses were carried out for each method, focusing on critical variables with the largest impact on indirect cost estimates. Results The ROI was higher for the modified SAM (1.33) than for the conventional methods assessing income calculations (range - 0.178 to 1.22). Probabilistic sensitivity analyses showed wide distributions in the ROI estimates, with variation in the variable impact on the indirect cost results per method selected. Conclusions In contrast to conventional methods, the SAM approach provides detailed and comprehensive assessments of the impact of new interventions on the indirect non-medical costs and the financial interactions between agents, disclosing useful information for different stakeholders.</p