Quantifying Economic Dependency

In this paper we compare several types of economic dependency ratios for a selection of European countries. These dependency ratios take into account not only the demographic structure of the population, but also the differences in age-specific economic behaviour such as labour market activity, income and consumption as well as age-specific public transfers. In selected simulations where we combine patterns of age-specific economic behaviour and transfers with population projections, we show that in all countries population ageing would lead to a pronounced increase in dependency ratios if present age-specific patterns were not to change. Our analysis of cross-country differences in economic dependency demonstrates that these differences are driven by both differences in age-specific economic behaviour and in the age composition of the populations. The choice of which dependency ratio to use in a specific policy context is determined by the nature of the question to be answered. The comparison of our various dependency ratios across countries gives insights into which strategies might be effective in mitigating the expected increase in economic dependency due to demographic change

Self-homodyne tomography of a twin-beam state

A self-homodyne detection scheme is proposed to perform two-mode tomography on a twin-beam state at the output of a nondegenerate optical parametric amplifier. This scheme has been devised to improve the matching between the local oscillator and the signal modes, which is the main limitation to the overall quantum efficiency in conventional homodyning. The feasibility of the measurement is analyzed on the basis of Monte-Carlo simulations, studying the effect of non-unit quantum efficiency on detection of the correlation and the total photon-number oscillations of the twin-beam state.Comment: 13 pages (two-column ReVTeX) including 21 postscript figures; to appear on Phys. Rev.

SPARCC 3.0 – Solid Propellant CubeSat Propulsion

Objective 1: The team shall build a propulsion system that uses solid propellant. Objective 2: The team shall design a system that will produce variable thrust. Objective 3: The team shall design a propulsion system that meets constraints for a small spacecraft. Constraints: • Mass: 6kg • Power: 16 W • Volume: 2U = 20x10x10 c

Outcome-oriented clinicopathological reappraisal of sinonasal adenoid cystic carcinoma with broad morphological spectrum and high MYB::NFIB prevalence

Adenoid cystic carcinoma (AdCC) is a salivary gland neoplasm that infrequently appears in the sinonasal region. The aim of this study was to evaluate the outcome and clinicopathological parameters of sinonasal AdCC. A retrospective analysis was conducted on all cases of AdCC affecting the nasal cavity or paranasal sinuses between 2000 and 2018 at the University Hospital Zurich. Tumor material was examined for morphological features and analyzed for molecular alterations. A total of 14 patients were included. Mean age at presentation was 57.7 years. Sequencing revealed MYB::NFIB gene fusion in 11/12 analyzable cases. Poor prognostic factors were solid variant (p 30%), high-grade transformation, and sphenoid sinus involvement are negative prognostic factors for sinonasal AdCC. A high prevalence of MYB::NFIB gene fusion may help to correctly classify diagnostically challenging (e.g. metatypical) cases

GPS antenna calibration at different stations

The goal of this paper is to investigate the modelling of geodetic GPS antenna phase center through the relative field calibration method. Two geodetic GPS antenna models were investigated. Field measurements were carried out at two calibration pillars in order to estimate azimuth and elevation dependent phase center variations. Significant differences between the modellings due to antenna interchange between the pillars are rather evident and can be attributed to different multipath conditions.O objetivo deste trabalho é investigar a modelagem do centro de fase de antenas geodésicas GPS obtida por método relativo de calibração. Dois modelos de antenas GPS geodésicas foram investigados. Medições em dois pilares de calibração foram conduzidas a fim de se determinar as variações do centro de fase dependentes de azimute e elevação. Diferenças significantes entre as modelagens são evidentes em decorrência do intercâmbio entre pilares, e podem estar associadas às diferentes condições de multicaminho nas estações