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The recreational correlations of urbanisation process in Hungary
Antal Aubert, Veronika Hegedüs, 2006, izvirni znanstveni članek

Opis: The settlement network of Hungary has reached a development phase by now where not only concentration processes but also disurbanisation phenomena can be seen. This has led to the birth or urban spaces of different types, in which spaces the functions satisfying the recreational needs of the local society are becoming more and more important. Recreation, in addition to “tourism” in the classic sense of the word, is a process meeting the demands of the local population and affecting the image and the identity of the settlement, which is available for most of the people up to the level of their leisure time. (Recreation as a possibility to spend leisure time can be interpreted in a wider context that also involves tourism, but in this paper the narrower interpretation is considered as valid.) Beyond the former, mainly touristic division of the space, the paper places the recreation- related phenomena and spaces within the system of urbanisation processes; also, the by the examination of the demand and supply side it justifies the importance of the research. Following the introduction of the theoretical background, the paper focuses – through a case study – on the development of the settlement network around Kaposvár and the recreation possibilities and spaces of the respective area.
Ključne besede: urbanisation, recreational correlations, Kaposvár
Objavljeno: 02.03.2018; Ogledov: 316; Prenosov: 37
.pdf Celotno besedilo (286,34 KB)
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Empirical correlation between the shear-wave velocity and the dynamic probing heavy test
Stjepan Strelec, Davor Stanko, Mario Gazdek, 2016, izvirni znanstveni članek

Opis: Varaždin is located in the north-western part of Croatia in shallow quaternary alluvial sediments of the Drava River basin. Local site effects due to the alluvial soft sediments can play a crucial role in the amplification of seismic-wave ground motions. The shear-wave velocity (VS) is one of the most important parameters for determining dynamic soil properties and ground-response analyses. The seismic surface wave method (MASW) is the simplest and a very efficient way of measuring the shear-wave velocity in the field. The Dynamic Probing Heavy (DPH) test is suited to determining the soil strength and the soil deformation properties. However, there are a lack of correlations between the shear-wave velocity and the DPH tests (VS - NDPH) in the literature. In this paper we present empirical correlations between the shear-wave velocity VS and the soil penetration resistance NDPH with: a) raw (original) NDPH data: VS = 97.839·NDPH0.395, (R2 = 0.723); b) a groundwater correction NDPH data: VS = 92.998·NDPH0.363 (R2 = 0.815). From the measured DPH data, the shear-wave velocity (VS), the shear modulus (Go) and the Young’s modulus (Eo and Er) were estimated. Two different approaches (low vs. high strain) were compared, and the results were found to be in good agreement when the relative difference between the velocities is small and smooth. Dynamic probing tests are good for studying a discrete point of interest in a large field area based on preliminary seismic tests. The suggested correlation VS - NDPH can be used for a rough estimation of VS from NDPH (they are site-specific, and so not applicable worldwide). In this way valuable information about dynamic soil properties can be extracted for ground-response analyses and the study of local site effects.
Ključne besede: shear-wave velocity, MASW, DPH, empirical correlations, dynamic elastic moduli, dynamic soil properties
Objavljeno: 15.06.2018; Ogledov: 333; Prenosov: 13
.pdf Celotno besedilo (1,34 MB)
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