New column configurations for pressure swing batch distillation II. Rigorous simulation calculations

The pressure swing distillation in different batch column configurations is investigated by rigorous simulation calculations. The calculations are made by a professional flow-sheet simulator for the separation of a minimum (ethanol–toluene) and a maximum boiling (water– ethylene-diamine) azeotropic mixture. Besides studying the well known configurations (rectifier, stripper) we also investigate two novel configurations such as double column batch rectifier and double column batch stripper. The alternate application of a batch rectifier and a batch stripper is also studied. The different column configurations are compared

Bell inequality and common causal explanation in algebraic quantum field theory

Bell inequalities, understood as constraints between classical conditional probabilities, can be derived from a set of assumptions representing a common causal explanation of classical correlations. A similar derivation, however, is not known for Bell inequalities in algebraic quantum field theories establishing constraints for the expectation of specific linear combinations of projections in a quantum state. In the paper we address the question as to whether a 'common causal justification' of these non-classical Bell inequalities is possible. We will show that although the classical notion of common causal explanation can readily be generalized for the non-classical case, the Bell inequalities used in quantum theories cannot be derived from these non-classical common causes. Just the opposite is true: for a set of correlations there can be given a non-classical common causal explanation even if they violate the Bell inequalities. This shows that the range of common causal explanations in the non-classical case is wider than that restricted by the Bell inequalities

Asymptotic behavior of the generalized St. Petersburg sum conditioned on its maximum

In this paper, we revisit the classical results on the generalized St. Petersburg sums. We determine the limit distribution of the St. Petersburg sum conditioning on its maximum, and we analyze how the limit depends on the value of the maximum. As an application, we obtain an infinite sum representation of the distribution function of the possible semistable limits. In the representation, each term corresponds to a given maximum, in particular this result explains that the semistable behavior is caused by the typical values of the maximum.Comment: Published at http://dx.doi.org/10.3150/14-BEJ685 in the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm

Entrainer selection for pressure swing batch distillation

The feasibility of the separation of binary homoazeotropes with pressure swing batch distillation by the application of an entrainer is studied. The feasibility studies are based on the assumption of maximal separation and on the analysis of batch distillation/stripping regions and the vessel path in the residue curve map of the ternary mixture. The following configurations are investigated: batch rectifier, batch stripper, double column batch rectifier and double column batch stripper. Rules for the selection of an entrainer are suggested

Városi területek megújítása - különös tekintettel a szabadterekre = Regeneration of urban areas - with a focus on public spaces

A dolgozat Budapest példáján keresztül vizsgálja a városi területek megújításának eszköztárát. A kutatás során az átalakuló városi területekre fókuszálok, hiszen Budapest esetében (is) ezek jelentős településfejlesztési kihívást és egyúttal lehetőséget jelentenek. A doktori iskola profiljához igazodóan kiemelt hangsúllyal vizsgálom a szabadterekkel kapcsolatos beavatkozásokat, közöttük is a szabadtérépítészeti stratégiákat és az önkormányzati közterület megújítási projekteket. _____ Through the example of Budapest the paper examines the toolkit of regenerating urban areas. The research focuses on the transitional areas within the city, since in the case of Budapest (as in many other cities) the redevelopment of these areas is a significant challenge and also an opportunity for the city. In the research – according to the profile of the doctoral school – I draw significant attention on open space related intervention, such as greenspace strategies and municipal public space regeneration projects