The Dilemma of Delegating Search: Budgeting in Public Employment Service

The Recent German research has suggested that extending the number of caseworkers may have a very positive effect on PES performance. The present paper accepts this key insight but argues that there are other factors that may independently drive outcomes and in particular local agents’ discretion. That is, it focuses on the delegation problem between the central office and the local job center ‘matchmakers.’ Because their (search) effort in contacting employers and collecting data is not verifiable by the central authority, a typical moral hazard problem can arise. To overcome the delegation problem and provide high‐powered incentives for increased levels of search effort on the part of job centers, we propose output‐related schemes that assign greater staff capacity to agencies achieving high strike rates.matching unemployment, public employment service, active labor market policy, moral hazard, search theory

The Dilemma of Delegating Search: Budgeting in Public Employment Services

The poor performance often attributed to many public employment services may be explained in part by a delegation problem between the central office and local job centers. In markets characterized by frictions, job centers function as match-makers, linking job seekers with relevant vacancies. Because their search intensity in contacting employers and collecting data is not verifiable by the central authority, a typical moral hazard problem can arise. To overcome the delegation problem and provide high-powered incentives for high levels of search effort on the part of job centers, we propose output-related schemes that assign greater staff capacity to agencies achieving high strike rates.matching unemployment, public employment service, delegation problem, moral hazard, search theory

Electroweak Sudakov Corrections and the Top Quark Forward-Backward Asymmetry

The Standard Model (SM) prediction of the top quark forward backward asymmetry is shown to be slightly enhanced by a correction factor of 1.05 due to electroweak Sudakov (EWS) logarithms of the form (\alpha/sin^2 \theta_W)^n log^{m< 2n} (s/M_{W,Z}^2). The EWS effect on the dijet and t \bar{t} invariant mass spectra is significant, reducing the SM prediction by ~20, 10 % respectively for the highest invariant masses measured at the LHC, and changing the shape of the high-mass tail of the spectrum. These corrections significantly affect measurements of the top quark invariant mass spectrum and the search for an excess of events related to the top quark forward-backward asymmetry.Comment: 5 pages, 2 figure

Next generation design framework for the aircraft electric power system

Comprehensive understanding and analysis of the more electric aircraft network architecture (MEA) usually require a powerful simulation framework, which allows modelling, simulation and post-processing of aircraft electric power systems. Since the electric power network in the MEA typically covers several physical domains such as electrical systems, magnetic systems, mechanical systems and control, a modelling language to be selected for the design framework has to be capable of modelling multi-domain systems. In this regard, Modelica - an object oriented, equation based modelling language has been chosen as a candidate for modelling the extended electric network in JTI SGO project. By hand of some study cases at supplier level and airframer level, the capability of the Modelica technique based design framework was tested, demonstrated and improved. The selected applications are system specification, component design and virtual testing, which are associated to different phases of the design process for the aircraft electric power system. Essential components which were modelled are the generator, power converters and electromechanical actuators. Modelica and the simulation suite Dymola were demonstrated to fulfil all stated demands

Atomic-scale measurement of ultraslow Li motions in glassy LiAlSi2 O6 by two-time L6 i spin-alignment echo NMR correlation spectroscopy

6Li spin-alignment echo (SAE) nuclear-magnetic-resonance (NMR) spectroscopy is used to monitor single-particle two-time correlation functions in LiAlSi2O6 glass. The method, here applied in the temperature range from 300 to 400 K, is sensitive to ultraslow Li hopping processes with rates (1/τSAE) down to 10 jumps/s. The use of a sample with natural 6Li abundance allowed the measurement of pure NMR spin-alignment echoes which are damped with increasing mixing time exclusively by slow Li jumps, i.e., free of influences arising from, e.g., interfering spin-diffusion effects. The considerably stretched correlation functions reveal the presence of a broad distribution of jump rates. The results are comprehensively compared with those recently obtained from both 7Li SAE and 7Li spin-lattice relaxation NMR as well as from dc conductivity measurements. Interestingly, the activation energy of the latter, which are sensitive to long-range Li transport parameters, is in good agreement with that microscopically probed by 6Li SAE NMR, here. © 2008 The American Physical Society

Docência reflexiva: pesquisa e protagonismo

O presente artigo objetiva uma reflexão teórico-prática sobre a formação continuada de professores. Essa proposição se origina dos encontros de formação continuada de professores desenvolvidos nos anos de 2012, 2013 e 2014, ao longo de diferentes momentos da reestruturação curricular do Ensino Médio no Rio Grande do Sul/Brasil. Postula-se que a formação continuada se caracteriza como tempo e espaço fecundo de possibilidades para a construção e reconstrução das identidades profissionais dos professores. A constituição de espaços coletivos de formação no âmbito da escola convoca o professor a planejar e participar da cena de estudos como protagonista da reconstrução da identidade profissional, contexto em que professor sai da condição de alguém dito pelos outros para se dizerThis article aims at a theoretical-practical reflection on the continuing education of teachers. This proposition stems from meetings continued teacher training developed in the years 2012, 2013 and 2014, over different times of curricular restructuring of Secondary Education in Rio Grande do Sul / Brazil. It is postulated that continuing education is characterized as long and fruitful space of possibilities for the construction and reconstruction of teachers' professional identities. The constitution of collective spaces training within the school calls the teacher to plan and participate in the scene as the protagonist of studies of the reconstruction of professional identity, the context in which the teacher will be provided by someone other told to sa