Geomatics and Environmental Engineering
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ISSN 1898-1135
e-ISSN: 2300-7095
Issue Date
2012
Volume
Vol. 6
Number
No. 3
Description
Journal Volume
Geomatics and Environmental Engineering
Vol. 6 (2012)
Projects
Pages
Articles
Land value maps of naturally valuable areas
(2012) Cellmer, Radosław; Senetra, Adam; Szczepańska, Agnieszka
The objective of this study was to analyze the correlations between environmental quality and property prices. The resulting data were input to develop land value maps with the use of cokriging methods. The key environmental factors affecting property prices were greenery, surface water, noise impacts and landscape features. The assessment method was point valuation, and environmental quality was a variable in statistical analyses. The surveyed site was undeveloped land plots in the suburbia of Olsztyn, the capital city of the Region of Warmia and Mazury in Poland. The applied methodology is based mostly on the modeling of spatial correlations with the involvement of statistical and geostatistical techniques. The results are presented as models of selected correlations and thematic maps illustrating the effect of environmental factors on property value.
Determination the accuracy of TELPOD SVP 45 resistive sensors as tools for measuring the relative displacement of points
(2012) Ćwiąkała, Paweł; Owerko, Tomasz
Modern measurement technologies allow us to simplify the carrying out of surveys, especially specialist ones. Resistive sensors may prove to be useful during measurements of deformations and strains of structures. These tools allow for the surveying of changes in section lengths and the spacing of expansion gaps. The article will discuss the sensor calibration procedure. In addition, a statistical analysis of the test measurement results of eight sensors of this type will be discussed.
An analysis of the causes of damage to reinforced concrete road viaduct located in the mining area
(2012) Kocot, Wojciech
This article discusses the causes of the damage to a road viaduct localized in a mining area. Due to the location of the structure, it was suspected that the damage resulted from impacts associated with mining exploitation. An analysis demonstrated no causal relationship between the occurring damage and the mining exploitation in the viaduct area, as well as probable causes of damage were identified.
Determination of acidic pharmaceuticals in municipal wastewater by using solid-phase extraction followed by gas chromatography-mass spectrometry
(2012) Nosek, Katarzyna; Styszko-Grochowiak, Katarzyna; Gołaś, Janusz
The appearance of pharmaceutical compounds and the need of their determination in an aquatic environment has become a subject of growing concern over recent years. This paper describes an application of a quantitative analytical method for the determination of selected nonsteroidal anti-inflammatory drugs: ketoprofen, naproxen, diclofenac and other newly emerging contaminants - triclosan and bisphenol A in influent and effluent from a wastewater treatment plant located in Kraków (Poland). Samples were isolated and preconcentrated by using the solid - phase extraction (SPE) technique, then eluat was derivatized with N-methy-N-(trimethylsilyl)-trifluoroacetamide (MSTFA) and analyzed by gas chromatography coupled with mass spectrometry. All of tested pharmaceuticals were present in the wastewater treatment plant effluent and influent at concentration ppt to ppb.
Research on the influence of the approximated principal distance on the accuracy of orthophotoplans out of historic polychrome (on flat and quasi-flat surface)
(2012) Pastucha, Elżbieta
This artide discusses the problem of errors caused by the variability of principal distance in creating orthophotoplans of historic polychrome. Photographs used in the process of orthorectification need to have stable and known interior orientation elements, and photographs used in heritage documentation have to achieve the highest possible visual quality (including sharpness). The highest possible sharpness, provided by the variability of principal distance, and the stability of interior orientation elements are conditions which mutually exclude themselves. Analytical studies were conducted to calculate errors that would occur on resultant orthophotoplans if in the process of computing photographs (taken in autofocus mode) would take part IO elements established for average distance from the object plane. The analysis is based on the assumptions similar to the conditions found in historic sites. Three types of lenses (20 mm, 50 mm and 150 mm) were taken into consideration, two resolutions (0.3 mm and 1 mm) of final orthophotoplans. Neither the scale of adjoining photographs should be different more than ±10% nor the error caused by the variability of principal distance exceed 0.25 pixel. There were two types of objects adopted for the analysis: polychrome on the flat wall and the stone wali. Conducted studies showed a relatively small influence of approximated principal distance on geometrical accuracy (radial shifts) of resultant orthophotoplans.