Apparatus makes klystron operating frequency adjustable from remote point

Apparatus makes possible proper frequency adjustment in a receiver using a pump klystron for a traveling-wave master. It incorporates a tunable overcoupled cavity with irises of appropriate size to accomplish frequency spread over the desired range and to maintain the Q of the klystron circuit at the optimum value

A simple tester provides resonant frequency measurements of ferrite devices

Tester enables direct measurement of the resonant frequency of an yttrium iron garnet disk. The disk is tested while mounted on the isolator strip with less regard for dimensional flaws

Circulator having quarter wavelength resonant post and parametric amplifier circuits utilizing the same Patent

Development of electromagnetic wave transmission line circulator and application to parametric amplifier circuit

Thermal short improves sensitivity of cryogenically cooled maser

In-line, quarter-wave thermal short cools the center conductor of the signal-input coaxial transmission line to a cryogenically cooled traveling wave maser. It reduces both the thermal noise contribution of the coaxial line and the heat leak through the center conductor to the maser at 4.4 degrees K

Cryogenic waveguide window is sealed with plastic foam

Waveguide windows made with polystyrene preformed plastic and sealed with foamed-in-place plastic are useful in any microwave waveguide system using cryogenic cooling

Distributional and behavioural effects of the German labour market reform

"We estimate the effects of the reform of German Unemployment Insurance that replaced the wage-related Unemployment Assistance with an income maintenance Programme and stronger means testing. We model the tax-benefit system and use the Socio-Economic Panel. We estimate a discrete labour supply model and simulate the behavioural and distributional effects using the pseudo distribution method. Poverty and inequality decline overall, since households with children and low incomes gain, while those who used to earn high wages and received high unemployment transfers lose most. The behavioural responses mitigate the redistributive impact of the reform." (Author's abstract, IAB-Doku) ((en)) Additional Information Kurzfassung (deutsch) Executive summary (English)Arbeitsmarktpolitik, Verteilungseffekte, Einkommensverteilung, soziales System, Einkommenseffekte, Sozialleistungen, Arbeitslosengeld II-Empfänger, Arbeitslosengeld II, Einkommenshöhe, Familieneinkommen, soziale Gerechtigkeit, Erwerbsbeteiligung, Beschäftigungseffekte, Umverteilung, Armutsbekämpfung, Arbeitslose, Arbeitsuchende, Arbeitsuche, Erwerbsverhalten

Transmission line for S-band masers

Transmission-line is coaxial. Its outer conductor is made of thin-wall stainless-steel tube; inside is plated with 0.0025 mm copper and 0.0003 mm gold. This combination gives little microwave loss and adequate thermal isolation

Resonant isolator for maser amplifier

An isolator is described for use in a low noise maser amplifier, which provides low loss across a wide bandwidth and which can be constructed at moderate cost. The isolator includes a train of garnet or ferrite elements extending along the length of a microwave channel parallel to the slow wave structure, with the elements being of staggered height, so that the thin elements which are resonant to the microwaves are separated by much thicker elements. The thick garnet or ferrite elements reduce the magnetic flux passing through the thin elements to permit altering of the shape of the thin elements so as to facilitate their fabrication and to provide better isolation with reduced loss, by increasing the thickness of the thin elements and decreasing their length and width

The ZEW combined microsimulation-CGE model: innovative tool for applied policy analysis

This contribution describes the linkage of microsimulation models and computable general equilibrium (CGE) models using two already established models called “STSM” and “PACE-L” used by the Centre for European Economic Research. This state of the art research method for applied policy analysis combines the advantages of both model types: On the one hand, microsimulation models allow for detailed labor supply and distributional effects due to policy measures, as individual household data is used. On the other hand, by using a general equilibrium framework, labour market responses, such as wage and labour demand reactions are taken into account. --microsimulation,applied CGE analysis,linked micro-macro models