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Search Results: 1 - 10 of 549 matches for " Dobszay Gergely "
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Building constructions of stone cladded roofs in contemporary architecture
Dobszay Gergely
Facta Universitatis Series : Architecture and Civil Engineering , 2011, DOI: 10.2298/fuace1101035d
Abstract: Stone roof coverings have existed for hundreds of years now, but their application in contemporary representative architecture is quite different than it was in former times, and accordingly the underlying constructional details are much more complicated. The main role of the roof in today's architecture is to emphasize the abstract building volume and its homogeneity. The design (visual appearance) has priority over constructional considerations, while at the same time requirements for thermal insulation and the watertight buildup of the building envelope are rising. This is a big challenge for the design of the constructional details, since traditional methods do not apply anymore: almost all of the water gets under this exterior cladding where a completely waterproof underlayer is needed. Therefore a new type of constructions is borne. In this article I try to present innovative constructional alternatives for stone cladded roofs and try to define guidelines for their planning. These alternatives were created and refined based on analysis of historical and contemporary examples, the examination of the specific conditions and requirements that affect cladded roofs, their expected performance over their life-span, the difficulties that arise under construction and my work experience. I created seven groups, according to the method for fixing the individual stone elements, since this is the detail that most affects the buildup of the underlying structure. A new approach is needed with these unconventional constructions, with a much more detailed inventory of every little feature of the building in question. But since these features vary violently with the architectural conception the exact constructional solutions are usually unique as well.
QCD equation of state at nonzero magnetic fields in the Hadron Resonance Gas model
Endrodi, Gergely
High Energy Physics - Phenomenology , 2013,
Abstract: The Hadron Resonance Gas (HRG) model is considered to study the QCD equation of state for the case of nonzero external magnetic fields. Thermodynamic observables including the pressure, energy density, entropy density, magnetization and the speed of sound are presented as functions of the temperature and the magnetic field. The magnetization is determined to be positive, indicating that the hadronic phase of QCD is paramagnetic. The behavior of the speed of sound suggests that the deconfinement transition temperature is lowered as the magnetic field grows. Moreover, a simple correspondence is derived, which relates the magnetic catalysis of the quark condensate to the positivity of the beta-function in scalar QED.
A gyógyszerészhallgatók társadalmi sszetétele a Magyar Királyi Pázmány Péter Tudományegyetemen (1920-1944) The social composition of the pharmacist students on the Hungarian Royal Pázmány Péter Science University (1920-1944)
Magos Gergely
Kaleidoscope History , 2011,
Abstract:
RECENZIJA KNJIGE: WORKERS' NEIGHBORHOODS AND WORKERS' CITIES 1750 - 1950.
Gergely Nagy
AR : Arhitektura, Raziskave , 2012,
Abstract: The architectural and historic research of planned cities maybe the most neglected section of our history of architecture,our city planning and our urban design. This may be due to thefact that as inseparable the settlement or neighborhood is fromthe community, from the residents and from the sociologicalenvironment determined by the culture, as extensive is theresearch area. This concerns especially the settlements whichwere organized and planned in one period and where thefunction is fixed and the original society of the settlement isdefined. Moreover, even the settling and the circumstances ofthe population show a special peculiarity. The organization ofthe supplies has also its own history. The social development andthe transformation of demands is also an unknown originatorworthy of research that effected significantly the metamorphosisof these neighborhoods and cities.
Prevention of stillbirths: how students can get involved
Gergely Toldi
International Journal of Students' Research , 2011, DOI: 10.5549/ijsr.1.4.99-100
Abstract:
Renormalization group approach to the spin-1 Bose gas
Gergely Szirmai
Physics , 2005, DOI: 10.1140/epjd/e2005-00318-y
Abstract: A field theoretical renormalization group approach at two loop level is applied to the homogeneous spin-1 Bose gas in order to investigate the order of the phase transition. The beta function of the system with $d=4-\epsilon$ dimensions is determined up to the third power of the coupling constants and the system's free energy on the border of the classical stability is given in next to leading order. It is found that the phase transition of the interacting spin-1 Bose gases with weak spin-dependent coupling constant values is of first order.
Existence of two-channel Kondo regime for tunneling impurities with resonant scattering
Gergely Zarand
Physics , 2004, DOI: 10.1103/PhysRevB.72.245103
Abstract: Dynamical tunneling systems have been proposed earlier to display a two-channel Kondo effect, the orbital index of the particle playing the role of a pseudospin in the equivalent Kondo problem, and the spin being a silent channel index. However, as shown recently by Aleiner et al. [Phys. Rev. Lett. 86, 2629 (2001)], the predicted two-channel Kondo behavior can never be observed in the weak coupling regime, where the tunneling induced splitting of the levels of the tunneling system always dominates the physics. Here we show that the above scenario changes completely if the conduction electrons are scattered by resonant scattering off the tunneling impurity; Then - as a non-perturbative analysis reveals - the two-channel Kondo regime can easily be reached.
Critical point in the QCD phase diagram for extremely strong background magnetic fields
Gergely Endrodi
Physics , 2015,
Abstract: Lattice simulations have demonstrated that a background (electro)magnetic field reduces the chiral/deconfinement transition temperature of quantum chromodynamics for eB < 1 GeV^2. On the level of observables, this reduction manifests itself in an enhancement of the Polyakov loop and in a suppression of the light quark condensates (inverse magnetic catalysis) in the transition region. In this paper, we report on lattice simulations of 1+1+1-flavor QCD at an unprecedentedly high value of the magnetic field eB = 3.25 GeV^2. Based on the behavior of various observables, it is shown that even at this extremely strong field, inverse magnetic catalysis prevails and the transition, albeit becoming sharper, remains an analytic crossover. In addition, we develop an algorithm to directly simulate the asymptotically strong magnetic field limit of QCD. We find strong evidence for a first-order deconfinement phase transition in this limiting theory, implying the presence of a critical point in the QCD phase diagram. Based on the available lattice data, we estimate the location of the critical point.
Multidimensional spline integration of scattered data
Gergely Endrodi
Physics , 2010, DOI: 10.1016/j.cpc.2011.03.009
Abstract: We introduce a numerical method for reconstructing a multidimensional surface using the gradient of the surface measured at some values of the coordinates. The method consists of defining a multidimensional spline function and minimizing the deviation between its derivatives and the measured gradient. Unlike a multidimensional integration along some path, the present method results in a continuous, smooth surface, furthermore, it also applies to input data that are non-equidistant and not aligned on a rectangular grid. Function values, first and second derivatives and integrals are easy to calculate. The proper estimation of the statistical and systematical errors is also incorporated in the method.
QCD equation of state at nonzero magnetic fields in the Hadron Resonance Gas model
Gergely Endrodi
Physics , 2013, DOI: 10.1007/JHEP04(2013)023
Abstract: The Hadron Resonance Gas (HRG) model is considered to study the QCD equation of state for the case of nonzero external magnetic fields. Thermodynamic observables including the pressure, energy density, entropy density, magnetization and the speed of sound are presented as functions of the temperature and the magnetic field. The magnetization is determined to be positive, indicating that the hadronic phase of QCD is paramagnetic. The behavior of the speed of sound suggests that the deconfinement transition temperature is lowered as the magnetic field grows. Moreover, a simple correspondence is derived, which relates the magnetic catalysis of the quark condensate to the positivity of the beta-function in scalar QED.
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