Argon plasma transport properties

Transport properties of equilibrium argon plasm

Dynamical depinning of chiral domain walls

The domain wall depinning field represents the minimum magnetic field needed to move a domain wall, typically pinned by samples' disorder or patterned constrictions. Conventionally, such field is considered independent on the Gilbert damping since it is assumed to be the field at which the Zeeman energy equals the pinning energy barrier (both damping independent). Here, we analyse numerically the domain wall depinning field as function of the Gilbert damping in a system with perpendicular magnetic anisotropy and Dzyaloshinskii-Moriya interaction. Contrary to expectations, we find that the depinning field depends on the Gilbert damping and that it strongly decreases for small damping parameters. We explain this dependence with a simple one-dimensional model and we show that the reduction of the depinning field is related to the internal domain wall dynamics, proportional to the Dzyaloshinskii-Moriya interaction, and the finite size of the pinning barriers

The effect of direct and indirect taxes on poverty in developing countries

Abstract: This dissertation investigates the effect of direct and indirect taxes on poverty in developing countries, which are characterized by higher level of poverty and low level of total tax revenue as share of GDP. We use an annualised panel data of 37 developing countries for the period 1995-2016. Panel cointegration, Dynamic Ordinary Least Squares (DOLS) and Fully Modified Ordinary Least Squares (FMOLS), the Dumitrescu-Hurlin causality test and the Pooled Mean Group (PMG) were employed to determine the short- and long-run impact of direct and indirect taxes on poverty, and to assess the direction of the causal effects among the variables. The results from the FMOLS and DOLS show that only tax on goods and services and corporate taxes are negative and significant in explaining poverty in the long run in developing countries. From the Dumitrescu-Hurlin causality test, the findings indicate that there is a causality running from corporate taxes to poverty, while tax on goods and services cause poverty and vice versa. Finally, the PMG demonstrates that while the long-run estimates show a negative and significant relation among our variables in developing economies, the short-run relationship indicates that the link is statistically insignificant, with an error correction term of 0.059. Therefore, the short-run deviations from the long-run equilibrium are corrected at the speed of 6% each year. The overall findings support that argument that taxes on goods and services combined with corporate income taxes play a key role in reducing poverty in a long-run in developing economies. Therefore, the policy recommendation of this is that transfer and tax system should be designed in the way that income received from transfer should be more than taxes paid by the poor. And the revenue mobilized from taxes on good and services and corporate income taxes should be allocated to education at the early stage.M.Com. (Development Economics

A cellular automata for e-planning sustainable urban forms

A cellular automata-like model, twinned with interactive intelligent geographical systems, is presented to drive planning process toward sustainable urban forms. The use of algorithms and mathematical approaches for the study of urban forms [1] becomes increasingly useful and sometimes indispensable for the understanding of social, economics, behavioural and spatial urban phenomena, and, when possible, for their guidance toward objectively desired patterns. A vast literature using cellular automata for urban growth processes [2] succeeded earlier cellular automata models of three decades ago [3]. Urban morphogenesis is a critical theme due to the exceptional magnitude and speed of world urbanisation which urge novel models of cities if we want a pleasant life and sustainable growth [4]. Isobenefit Urbanism [4] is a libertarian paternalistic approach whose morphogenetic code induces a particular green/built spatiality and a 15-minute walking city where one can reach within 1km natural land, shops, amenities, services and places of work. It does so by leaving free the actual urban development and growth to follow spontaneous random – or locally desired – patterns of functional locations and density across the urban planimetry liberally driven by market forces and genius loci. The outputs are in fact infinites, though all satisfying the code design objective function which can generate interesting urban environmental, planning and economic impacts [5]

¿Voto por contenidos o voto por consignas?: algunas razones del voto ante el Referéndum del 20 de febrero

En este trabajo se analiza el voto de los españoles en el Referéndum del 20 de febrero, tratando de apuntar algunos de los principales factores explicativos del voto afirmativo y negativo. En este trabajo se analiza el voto de la ciudadanía española ante el Referéndum del 20 de febrero, utilizando como base fundamental la encuesta postelectoral del Centro de Investigaciones Sociológicas. Se discuten tres grandes interpretaciones del voto: (1) el voto informado en función de las actitudes ante el proceso de construcción europea; (2) el voto pro o anti gobierno; y (3) el voto en función de las consignas partidistas. En la encuesta aparecen evidencias de que en alguna medida las tres interpretaciones influyeron en el voto de algunos sectores de votantes

Portable display paneling has wide use, easy take down and assembly

Design for a modular display panel is based on a cross-shaped corner connector and wooden lattice bars. The bars are fitted into the arms of the metal connector and a pocket slot holds a modular-size panel