On the peculiar relevance of a fundamental dilemma of minimum-wage regulation in post-socialism – apropos of an international investigation

To the extent minimum-wage regulation is effective in fighting against excessive earnings handicaps of those at the lower end-tail of earnings distribution, it may have the side-effect of worsening their employment prospects. A demand-and-supply interpretation of data on the relative employment rate and earnings position of the least educated in the EU27 suggests that the resulting dilemma might be particularly relevant for minimum-wage policies in post-socialist countries

A computational study on the adsorption of the major ring-transformation products of methyloxirane in HY and HZSM-5 zeolites

The adsorption of dioxolane and dioxane derivatives in HY and HZSM-5 zeolites was studied computationally. The molecules are the main ring-transformation products of methyloxirane over these zeolites. Experimental work showed that the cyclic dimerisation reaction starts with the adsorption of the monomers over Brønsted acid sites through their ring oxygens. Computations revealed that these sites were close enough even in the high-silica HZSM-5 zeolite and the dimers comfortably fit even in the β-cage of HY as well as in the channel of the HZSM-5 zeolites. The stereochemical outcome of the dimerisation was also studied and the optimum conformations of the dimers were calculated as well

The integrated Sachs-Wolfe effect in the AvERA cosmology

The recent AvERA cosmological simulation of R\'acz et al. (2017) has a $\Lambda \mathrm{CDM}$-like expansion history and removes the tension between local and Planck (cosmic microwave background) Hubble constants. We contrast the AvERA prediction of the integrated Sachs--Wolfe (ISW) effect with that of $\Lambda \mathrm{CDM}$. The linear ISW effect is proportional to the derivative of the growth function, thus it is sensitive to small differences in the expansion histories of the respective models. We create simulated ISW maps tracing the path of light-rays through the Millennium XXL cosmological simulation, and perform theoretical calculations of the ISW power spectrum. AvERA predicts a significantly higher ISW effect than $\Lambda \mathrm{CDM}$, $A=1.93-5.29$ times larger depending on the $l$ index of the spherical power spectrum, which could be utilized to definitively differentiate the models. We also show that AvERA predicts an opposite-sign ISW effect in the redshift range $z \approx 1.5 - 4.4$, in clear contrast with $\Lambda \mathrm{CDM}$. Finally, we compare our ISW predictions with previous observations. While at present these cannot distinguish between the two models due to large error bars, and lack of internal consistency suggesting systematics, ISW probes from future surveys will tightly constrain the models.Comment: 9 pages, 8 figures. Submitted to MNRA

Spectral expansion for finite temperature two-point functions and clustering

Recently, the spectral expansion of finite temperature two-point functions in integrable quantum field theories was constructed using a finite volume regularization technique and the application of multidimensional residues. In the present work, the original calculation is revisited. By clarifying some details in the residue evaluations, we find and correct some inaccuracies of the previous result. The final result for contributions involving no more than two particles in the intermediate states is presented. The result is verified by proving a symmetry property which follows from the general structure of the spectral expansion, and also by numerical comparison to the discrete finite volume spectral sum. A further consistency check is performed by showing that the expansion satisfies the cluster property up to the order of the evaluation.Comment: 38 pages, 1 eps figure

Wage setting in Hungary: evidence from a firm survey

This paper presents new evidence on the flexibility of the Hungarian labor market, with special emphasis on wages. The results are based on a new survey on wage setting among Hungarian firms. The survey is part of the Eurosystem Wage Dynamics Network (WDN), and it is a harmonized questionnaire administered in 17 countries in Europe, including almost all Euro Area countries as well as five Central and Eastern European countries. The survey results show that the Hungarian labor market, while institutionally flexible, appears to be surprisingly rigid. The survey evidence points to low turnover and possibly more rigid wages than previously thought. JEL Classification: C83, J01, J30Hungary, survey, wage dynamics network, Wage setting

Towards a model of the Al13-pillared layer clay - a computational study

A step-by-step construction of an Al13-Keggin ion pillared montmorillonite segment is shown with the use of the MM+ general force field. The starting structures for the montmorillonite as well as the Al13-Keggin ion were obtained as pdb files. The two layers of the clay were dissected and segmented, then optimised with the MM+ force field. The Keggin ion was optimised with the PM3 semiempirical method. Then, the Keggin ion was attached to the layer through chemical bonds and was optimised with the MM+ force field once again. Finally, the structure was capped with the second layer and was optimised once again with the MM+ force field

Wage setting in Hungary: evidence from a firm survey

We document results from a survey of wage setting in Hungarian enterprises. The survey was developed and coordinated by the Eurosystem Wage Dynamics Network, and it was administered in 17 European countries; this allows us to put the Hungarian findings in context. The main conclusion from the survey is that while Hungarian firms operate in a quite flexible institutional environment, their wage setting practices are relatively rigid. In its wage setting outcomes, Hungary shares more similarities with Western European countries than with countries in the Central and Eastern European region. The survey provides strong evidence that the observed wage setting behaviour can be explained by internal factors related to employee motivation, perceived fairness, and firms’ desire to maintain a desired wage distribution.wage setting, survey, Hungary, Wage Dynamics Network.

StePS: A Multi-GPU Cosmological N-body Code for Compactified Simulations

We present the multi-GPU realization of the StePS (Stereographically Projected Cosmological Simulations) algorithm with MPI-OpenMP-CUDA hybrid parallelization and nearly ideal scale-out to multiple compute nodes. Our new zoom-in cosmological direct N-body simulation method simulates the infinite universe with unprecedented dynamic range for a given amount of memory and, in contrast to traditional periodic simulations, its fundamental geometry and topology match observations. By using a spherical geometry instead of periodic boundary conditions, and gradually decreasing the mass resolution with radius, our code is capable of running simulations with a few gigaparsecs in diameter and with a mass resolution of $\sim 10^{9}M_{\odot}$ in the center in four days on three compute nodes with four GTX 1080Ti GPUs in each. The code can also be used to run extremely fast simulations with reasonable resolution for fitting cosmological parameters. These simulations are useful for prediction needs of large surveys. The StePS code is publicly available for the research community

Numerical investigation of the dynamics of linear spin ss fields on Kerr background I. Late time tails of spin s=±1,±2s = \pm 1, \pm 2 fields

The time evolution of linear fields of spin $s = \pm 1$ and $s = \pm 2$ on Kerr black hole spacetimes are investigated by solving the homogeneous Teukolsky equation numerically. The applied numerical setup is based on a combination of conformal compactification and the hyperbolic initial value problem. The evolved basic variables are expanded in terms of spin-weighted spherical harmonics which allows us to evaluate all the angular derivatives analytically, whereas the evolution of the expansion coefficients, in the time-radial section, is determined by applying the method of lines implemented in a fourth order accurate finite differencing stencil. Concerning the initialization, in all of our investigations single mode excitations---either static or purely dynamical type initial data---are applied. Within this setup the late time tail behavior is investigated. Due to the applied conformal compactification the asymptotic decay rates are determined at three characteristic locations---in the domain of outer communication, at the event horizon and at future null infinity---simultaneously. Recently introduced new type of `energy' and `angular momentum' balance relations are also applied in order to demonstrate the feasibility and robustness of the developed numerical schema, and also to verify the proper implementation of the underlying mathematical model.Comment: 38 pages, 5 figures, typos correcte