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Ján Kortiš, Ľuboš Daniel, Milan Škarupa and Maroš Ďuratný

Abstract

The experimental modal analysis is often used to validate the accuracy of dynamic numerical models. It is also a good tool to obtain valuable information about current condition of the structures that could help to determine residual lifetime. The quality of modal testing results is highly dependent on the proper estimation of the natural frequencies from the frequency response function. This article presents the experimental modal test of the laboratory steel structure in which the natural frequencies and mode shapes are determined.

Open access

Ilona Svobodová, Antonín Věžník and Michael Král

Abstract

From a global perspective, the growing of grapevines in the Czech Republic is of peripheral importance. For a group of grape-growing villages in southern Moravia, however, the making of wine is bound up with local history, traditions and cultural life, and contributes significantly to the local economy. This paper describes the current status of viticulture in Bohemia and Moravia, addressing changes in the number and structure of wine producers and pointing out some qualitative changes that the business is undergoing. Changing consumer tastes have brought a demand for quality wines of local origin, which cannot be met without high quality care of vineyards throughout the lifetime of the vines. Special attention is given to two alternative ways of tending vineyards - the development of integrated production, and organic viticulture - that are developing rapidly in the Czech Republic even when compared to Austria and Germany

Open access

Oto Makýš, Peter Krušinský, Renáta Korenková and Dominika Šrobárová

Abstract

The paper deals with the lifetime of wooden poles, situated in the archaeological open-air museum Liptovská Mara - Havránok, which were erected outdoors about 12 years ago. It is aimed at diagnosing their condition using sonic tomography. The poles differ from each other in the location, anchorage, and positioning in terms of the terrain slope. Investigation was focused on the free-standing poles (quasi sacrifice poles) and the poles that are part of the fortification (gates and walls). Measurements were carried out using the device Fakopp ArborSonic 3D Sonic Tomograph that has 18 sensors. It measures the sonic response (sound velocity) in a tree stem. Sound wave velocity within sound wood depends on its species, moisture content, and the direction of measurement. Measurements brought remarkable results.

Open access

Josef Vičan, Jozef Gocál, Jaroslav Odrobiňák and Peter Koteš

Abstract

The article describes general principles and basis of evaluation of existing railway bridges based on the concept of load-carrying capacity determination. Compared to the design of a new bridge, the modified reliability level for existing bridges evaluation should be considered due to implementation of the additional data related to bridge condition and behaviour obtained from regular inspections. Based on those data respecting the bridge remaining lifetime, a modification of partial safety factors for actions and materials could be respected in the bridge evaluation process. A great attention is also paid to the specific problems of determination of load-caring capacity of steel railway bridges in service. Recommendation for global analysis and methodology for existing steel bridge superstructure load-carrying capacity determination are described too.

Open access

Josef Vičan, Jozef Jošt and Jozef Gocál

.- GOCÁL, J.- MELIŠ, B.: Fatigue assessment of existing bridge members. In Communications -Scientific letters of University of Žilina, vol. 9, No. 3, 2007, pp. 11-15, ISSN 1335-4205. [4] VIČAN, J. - GOCÁL, J. - MELIŠ, B. - KOTEŠ, P. - KOTULA, P.: Real behaviour and Remaining Lifetime of Bridge Structures, In Communications - Scientific Letters of the University of Zilina, vol. 10, No. 2, 2008, pp. 30-37, ISSN 1335-4205.

Open access

Ján Jerga and Ľudovít Krajči

carbonation. Proceedings: 7th International Conference on Non-Destructive Testing and Experimental Stress Analysis of Concrete Structures, Košice, 1998, 135-140. [21] JANOTKA, I. - KRAJČI, Ľ.: Sulphate resistance and passivation ability of the mortar made from pozzolan cement with zeolite. Journal of Thermal Analysis and Calorimetry 94 (2008), 7-14. [22] JENSEN, A. D. - CHATTERJI, S.: RILEM TC 122-MLC, State of the art report on micro-cracking and lifetime of concrete - Part 1. Materials and Structures, 29 (1996), 3-8. [23

Open access

Burak Beyhan

–1191. HEMMASI, M. (1980): The Identification of Functional Regions Based on Lifetime Migration Data: A Case Study of Iran. Economic Geography, 56(3): 223–233. HINCKS, S., WONG, C. (2010): The Spatial Interaction of Housing and Labour Markets: Commuting Flow Analysis of North West England. Urban Studies, 47(3): 620–649. HOLMES, J. H., HAGGETT, P. (1977): Graph theory interpretation of flow matrices: a note on maximization procedures for identifying significant links. Geographical Analysis, 9(4): 388–399. ICHIM, D., FRANCONI, L., D’ALÒ, M. VAN DEN HEUVEL, G

Open access

Leszek Butowski

analytic hierarchy process. New York, McGraw. SAATY, T. L. (1982): Decision making for leaders. Lifetime learning publications. Belmont, Wadsworth. SAATY, T. L. (1987): The analytic hierarchy process - what it is and how it is used. Mathematical Modelling, 9(3–5): 161–176. SAATY, T. L. (1995): Decision making for leaders. The analytical hierarchy process for decisions in a complex world. Pittsburgh, RWS publications. SAATY, T. L. (2008): Decision making with the analytic hierarchy process. International Journal of Services Sciences, 1(1): 83

Open access

Ştefan Marian Lazăr and Elena Diaconu

Abstract

This paper aims to establish the interface conditions influence on the flexible pavement structures life. The methodology consists in using the interface constitutive model available in the Alizé calculation program to calculate the stresses and strains in the flexible pavement structures.

The design criteria related to limiting fatigue cracking of asphalt layers and permanent deformations at the subgrade level from the road bed are used to estimate the flexible pavement structures lifetime.

When calculating the critical stresses and strains, most mechanical design methods of the flexible pavement structures considers that the road layers at interfaces are perfect bonded or total unbonded.

Proper modeling of the interface binding condition is an important aspect in understanding the real behaviour of in-service flexible pavement structures.

Open access

Caner Ünal, Aslıhan Dursun and Meltem Caber

, Tourism Management, 36, 511-526 [42] Vidauskaite, R. (2015). Destination Branding Through Wedding Tourism: The Case of the Caribbean (Master of Sciences dissertation). Faculty of Economics, University of Ljubljana, Slovenia [43] Wilkins, H. (2011). Souvenirs: What and why we buy? Journal of Travel Research, 50(3), 239 [44] Winchester, M., Winchester, T., & Alvey, F. (2011). Seeking romance and a once in a life-time experience: Considering attributes that attract honeymooners to destinations, in ANZMAC 2011 Conference proceedings: Marketing in the age