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. of Civil, Environmental and Natural Resources Engineering, Luleå, Sweden, 2019. 4. Carlswärd J & Emborg M: “Shrinkage cracking of thin concrete overlays.” Nordic Concrete Researc h, Vol. 50, 2014, pp. 355-359. 5. Jonasson J-E: “Datorprogram för icke-linjära beräkningar i betong med hänsyn till svinn, krypning och temperatur.” Report , Swedish Cement & Concrete Research Institute, Stockholm, Sweden, 1977, pp. 105-108. 6. Birkeland HW. “Differential shrinkage in composite beams.” ACI Journal Proceedings, Vol. 56, No. 5, 1960, pp. 1123-1136. 7. Silfwerbrand J

1 Introduction This paper advances science overlay mapping processes. The intent is to provide the research communities using scientometrics with an improved methodology to generate overlay maps ( Rafols, Porter, & Leydesdorff, 2010 ). An overlay map is a global map of science over which a subset of publications is projected, thus allowing the visualization of disciplinary scope for the scientific production of a given organization, individuals, territory, etc. Such maps can help analysts and readers grasp the mix of disciplines engaging a given topic or the

infrastructure. IEEE Journal on Selected Areas in Communications (JSAC, 20:2002, 2002. [9] Yatin Chawathe. Scattercast: an adaptable broadcast distribution framework. Multimedia Syst., 9(1):104- 118, July 2003. [10] Yang-hua Chu, Sanjay G. Rao, and Hui Zhang. A case for end system multicast (keynote address). In Proceedings of the 2000 ACM SIGMETRICS international conference on Measurement and modeling of computer systems, SIGMETRICS ’00, pages 1- 12, New York, NY, USA, 2000. ACM. [11] D. Constantinescu. Overlay multicast networks: Elements, architectures and performance, 2007

-41 4. Špaček P., Hegr Z., Varaus M., Hýzl P., Kaděrka R., “Economically effective revitalization of portland cement concrete pavements by asphalt layers overlay”, 6th Eurasphalt & Eurobitume Congress, 1-3 June 2016, Prague, Czech Republic. DOI: dx.doi.org/10.14311/EE.2016.107 5. Tapkin S., “The effect of polypropylene fibers on asphalt performance”, Building and environment, numer 43-2008, pp. 1065-1071 6. Abtahi S. M., Sheikhzadeh M., Hejaz S. M. “Fiber-reinforced asphalt-concrete – A review”, Construction and Building Materials. 24 (2010) pp. 871–877 7. Chandran A

Abstract

The tropical dry deciduous forests of Mirzapur district in Uttar Pradesh (state) in India are facing to severe threat from agricultural expansion, increased urbanisation, infrastructure development and unsustainable use of forest produce. The forests are nowadays fragmented and wildlife habitat is vanishing. Decreasing numbers of wild animal species requires using methods for preventing the loss of biodiversity.

The present study concerns analysis of satellite remote sensing data of Landsat OLI (2013) in conjunction with Geographic Information System (GIS) and support of Geographic Positioning System (GPS) to identify suitable habitat for wild animals. The thematic maps regarding e.g. land use, forest cover type were prepared. The weighted overlay method was used for integration of the thematic layers for identification of potential habitat and corridors for wildlife movement. Most suitable (2.54%), moderately suitable (12.0%) and least suitable (16.20%) areas were delineated and represented in a map. Highly suitable habitat was found at Dadri and Kotwa forest; moderately suitable habitat was found in Darhi Ram forests. Least suitable areas were found in Kotwa and Patewar forests. Such data are the basis to assess the wildlife conservation measures.

Abstract

The present article discusses the trends in the development of welding and weld overlaying on the threshold of the new millennium and during it. It presents the trends in the production of welding materials for welding and weld overlaying in industrially developed and developing countries. The structure of welding methods is also shown, giving priority to its development until 2020.

Abstract

The stress concentration observed in the vicinity of cut-outs and holes in structural elements significantly influences the fatigue endurance of machines subjected to cyclic loads. Numerous studies have been made so far to improve this situation and increase the structure lifetime. Several design recommendations have also been worked out to avoid the problem of premature failure. The proposed article illustrates the influence of the composite overlays applied around the cut-outs made in flat steel constructional elements subjected to axial tension. The detailed study concerns the reinforcement made from the FRP (fibre reinforcement polymer) composite applied around the notches. Two types of composite materials were used, namely: TVR 380 M12/R-glass (glass fibres embedded in epoxy resin matrix) and AS4D/9310 (carbon fibres embedded in epoxy resin matrix). In the first step, the detailed numerical studies (finite element analysis) were performed for the steel samples (with no overlays added) with cut-outs made in the form of circle, square and triangle hole (the last two with rounded corners). The results of these studies were compared with the existing analytical solutions with respect to the stress concentration factors (SCF) estimation. The relatively good conformity was observed when using dense meshes of finite elements placed around the void vicinity. In the next step, the composite overlays were applied around cut-outs and their influence on the stress concentration was investigated. The influence of the fibre orientation, numbers of layers, sizes of the composite overlay used were considered. It was proved that the application of composite overlays evidently decreases the stress concentration around the notches.

Abstract

The research is taken on the vibroarc welding apparatus ENTON-60 equipped with an axial non-inertial vibrator in argon shield. The criteria used for assessing the flow of the electric arc process and the formation of weld overlay clad surfaces are: short circuit voltage, voltage at the start of arc combustion, short circuit amperage, and amperage at the end of arc combustion. Wire electrode‘s vibrating frequency is considered as an input variable of the cybernetic model. It has been found that amplitude of vibrations has a significant impact on the vibroarc process - voltage parameters and welding current ratio, as the minimum amperage of short circuit and the lowest voltage at the start of arc combustion is realized at 2 mm amplitude of vibrations.

References [1] R. HAAS, P. JOSEPH, "Design oriented evaluation of alternatives for reflection cracking through pavement overlays" First International Conference on Reflective Cracking in Pavements, Liege, Belgium, 1989. [2] A. HALIM, W. PHANG, R. HAAS, "Realizing structural design objectives through minimization of construction induced cracking" Sixth International Conference on Structural Design of Asphalt Pavements, Michigan, 1987. [3] J. PAIS, “The reflective cracking in flexible pavement overlay design (in Portuguese)”, Ph. D. Thesis, University of Minho

Abstract

Salt accumulation within the soil is one of the subtle ecological issues around the world. An integrated of remote sensing with different statistical techniques has indicated accomplishment for creating soil quality forecasting models. The objective of this research was to unveil the degree and location of the salt affected soils as it has a severe effect on the agricultural crop yield of the Gautam Buddha Nagar (GBN) district. To assess spatial variation of the salt-affected soil a simulation model integrating satellite observation data, artificial neural network (ANN) and multiple linear regression (MLR) was used. The statistical correlation amongst ground-truth data and Landsat original bands and band ratios showed that all the bands and ratios showed a non-significant correlation with SAR. While four optical bands and eleven band ratios showed high correlation with all the soil quality parameters. Combining all the remotely sensed variables into models resulted in the finest fit with the R2 value equal to 0.84, 0.69, 0.59 and 0.85 for EC, pH, ESP and TSS, respectively. The soil quality parameter maps generated using selected models revealed that most of the part of the agricultural land of the study area lies in the range of moderately saline and moderately sodic soil. Further Analytical Hierarchy Process (AHP) was applied to generate overall soil degradation probability map of the district, with respect to salt accumulation. The result revealed that the major portion of the entire agricultural field of the study area lie between low (32.74 %) to moderate (29.53 %) probability zones of salt susceptibility.