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The Architecture of Recession — Solidary Architecture
No full textThe article discusses the effects of the global economic recession - since 2008 — on the Hungarian building construction, thereby affecting the architectural design activity, primarily from the perspective of the change in design view. The recession, which points beyond its economical aspect, emphasizes a vastly complex approach, which makes the handling of the accumulated social and environmental problems inevitable. The designers have to show solidarity towards the constructed and natural environment, and first of all people. The article reveals the current activities and results of the Research Group of Solidary Architecture founded recently at Pollack Mihály Faculty of Engineering and Information Technology, University of Pécs
Numerical Modeling of Coupled Hydrothermo-Mechanical Behavior of Concrete Structures
No full textThis paper is devoted to a computer simulation of coupled-thermo-hydro mechanical analysis of concrete structures. The attention is concentrated to concrete structures at early stage, when hydration heat evolution and moisture content changes can influence significantly the reliability and service life of these structures. The results of computation are illustrated by the simulation of a foundation slab, which is situated in the basement of the administration building Prague-Tìšnov, Czech Republic. The Künzel and Kiessl approach is used to analyze heat and moisture fields and it is extended by a set of climatic conditions and by a model of hydration heat evolution in concrete. The problem is solved using the open source program SIFEL
Safety Assessment of the Liquefaction for Nuclear Power Plants
No full textExperience shows that the nuclear power plant can be safely designed for vibratory effects of earthquakes. Contrary to this, the plants can be heavily damaged by effects of earthquake-induced phenomena like tsunami, soil liquefaction after surviving the ground shaking effects. In the paper, the nuclear power plant’s safety analysis methodology is outlined for the case of soil liquefaction. In the paper the methodology for safety analysis of nuclear power plants for the case of liquefaction is outlined for both deterministic and probabilistic cases. It is shown, how the analysis of consequences of the liquefaction has to be embedded into the overall analysis of plant seismic safety. The selection of hazard and the fragility assessment methods is discussed from the point of view of needs of safety analysis
Phase plane tuning of fuzzy controller for 1 DOF helicopter model
No full textThe paper suggests a design procedure for fuzzy cascade control. The expert knowledge based tuning procedure is supported by investigation the phase plane of the reference tracking. The plant is a one degree of freedom helicopter model with highly non-linear dynamics in a hardware-in-the-loop arrangement. Starting from a common fuzzy-PI controller in the outer loop and classic PI-controller in the inner loop, the presented tuning procedure enables to obtain fuzzy-adaptive parameter settings of the inner-loop and a heuristic modified rule base in the outer loop. The developed control strategy proves to be very successful: both the settling times and overshoots have become well regulated
Validation through numerical simulations of the design procedure for bolted beam-to-column connections with haunches
No full textThe current paper presents the outcomes of an extensive pre-test numerical investigation program carried out with the aim to validate the design procedure for bolted beamto- column connections with haunches. In the first part of the paper, a description is made with regard to the analytical procedure that was used for the design of full strength and rigid joints. The results from the pre-test numerical simulations are further presented for each beam-to-column joint assembly, in terms of overall response (moment-rotation curve, failure mechanism), as well as local response, particularly the behavior of joint components (stress distribution, plastic strain, force level in the preloaded bolts). Finite element simulations highlighted that plastic deformations occurred in the beam close to the end of the haunch. In addition, minor plastic deformations were observed in the bolts close to the beam flange in tension, and therefore also higher force levels compared to the computed design capacity. As a result, the design procedure was adjusted with the aim of keeping the non-dissipative components of the joints in the elastic range. Additional information is presented with regard to the position of the plastic hinge, the effect of preloaded bolts, the distribution of forces in bolt rows and the change of the lever arm due to the presence of the haunch in compression zone. The main conclusions of the study are finally presented
Quasi steady-state harmonic model of an infinite conductor plate pair
No full textThe paper deduces general relationships of real analytical functions for 1D quasi steady-state harmonic model of a conductor plate pair. To demonstrate the use of the model, the results are applied to calculate the active and reactive power of an induction furnace with graphite crucible and to determine the eddy current loss in different shielding arrangements
A halgazdálkodás jogi szabályozása
No full textA tanulmány a következő témaköröket foglalja magában:
1. A halgazdálkodás speciális szabályozási tárgyai (161. o.)
2. A halgazdálkodás tervszerűsége (162. o.)
3. A halgazdálkodási jog és az ahhoz kapcsolódó előírások (163. o.)
4. A halállomány tulajdoni kérdései (165. o
A magyar földforgalmi rezsimet befolyásoló tényezők
No full textA tanulmány az alábbi témakörökkel foglalkozik:
1.1. A földforgalmi szabályozást befolyásoló jogon kívüli tényezők (40. o.)
1.1.1 Az állami szuverenitás és a földforgalmi rezsim összefüggései (41. o.)
1.1.2 Földpiaci helyzet (41. o.)
1.1.3 Környezeti kérdések (43. o.)
1.1.4 Harmadik országok szabályozása: az USA példája (44. o.)
1.2. A magyar földforgalmi jogot befolyásoló jogi környezet (48. o.)
1.2.1. Emberi jogok, különös tekintettel a tulajdonhoz való jogra (48. o.)
1.2.2. Az európai uniós jog és más nemzetközi gazdasági együtt működések
(49. o.)
1.2.2.1. Az EU negatív és pozitív integrációs modelljének előírásai (55. o.)
1.2.2.2. Az Európai Unió Bíróságának esetjoga (57. o.)
1.2.2.3. Más EU tagállamok szabályozása (58. o.)
1.2.2.4. Magyar kötelezettségszegési eljárások (60. o.
