GeoScience Engineering. 2011, vol. 57

Permanent URI for this collectionhttp://hdl.handle.net/10084/89671

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Now showing 1 - 20 out of 20 results

Transformation of thematic cartography domain ontology into Java interfaces and clasess
(Vysoká škola báňská-Technická Univerzita Ostrava. Hornicko-geologická fakulta, 2011) Peňáz, Tomáš; Dostál, Radek
The article deals with the transformation of an experimental ontology, classifying selected declarative knowledge for the domain of thematic cartography, into classes and interfaces of the Java language. The reason for this transformation is to transfer the declarative knowledge from the field of thematic cartography into the form of a program code in the Java programming language. The resulting program code containing declarations of interfaces and classes will be further used for creating a software application for an intelligent system for the interactive support of thematic map creation. The upcoming pilot project of this knowledge system is designed for the users without necessary cartographic knowledge, which will allow them to create interactively thematic maps and provide them with the support. The purpose of the use of such a tool is to prevent the users from deviating from established cartographic rules and avoid the occurrence of gross errors in resulting maps. A properly compiled knowledge ontology facilitates the design of the prepared intelligent cartographic application, as the use of cartographic knowledge is enabled based on the automated transformation into the program code in the Java language. The generated program code contains declarations of basic concepts of thematic cartography, their structuring into classes corresponding to the source structures described in the ontology. The code also contains descriptions vertical and horizontal relations between the declared classes and also the interface for access to these classes and relations. The automated transformation of ontology into the Java code is not completely lossless. The examples of a transformation of individual components of ontology (classes, individuals, and object and datatype properties) into interfaces and classes in Java show the differences occurred during the transfer of the declarative knowledge into the program code. From these examples it is clear that the elements of ontology component description are or are not transformed into the Java code in full. The article proposes recommendations how to optimize the knowledge description on the part of ontology in order to minimize possible losses of the transformation of knowledge into the Java code.
Application of GPR during investigation concerning causes of failure of railway station platform in Jilešovice
(Vysoká škola báňská-Technická Univerzita Ostrava. Hornicko-geologická fakulta, 2011) Pospíšil, Pavel; Poláček, Aleš; Kovář, Luděk
Civil engineering works carried out as the renovation of existing buildings can be difficult to predict in terms of their behaviour over time. The heterogeneity of materials of a natural and anthropogenic origin can subsequently lead to either deformations, or breach threatening the existence of building structure in terms of statics. The platform of the station in Jilešovice underwent structural modifications within the reconstruction of the railway track from Ostrava to Opava. The largest building intervention was the reconstruction of an old bridge and adjacent embankment bodies now in addition secured due to stability by gabion baskets instead of the original natural grading. After a short time of its use, significant deformations appeared on the renovated object, whose causes and further evolution over time was not known. Within the design of investigation techniques, allowing uncovering the causes of violation quickly and efficiently, the survey with a georadar -GPR (Ground Penetrating Radar) was included, which as an indirect, non-destructive method of survey very quickly helped to clarify the causes of violations of the building structures.
Hydrogeologic and hydraulic conditions of old mine workings of the former Jeroným Mine
(Vysoká škola báňská-Technická Univerzita Ostrava. Hornicko-geologická fakulta, 2011) Grmela, Arnošt; Žůrek, Petr; Kukutsch, Radovan; Kořínek, Robert
The Jeroným Mine, situated in the locality of the Slavkovský les Protected Landscape Area, is a unique heritage site associated with mining in the 15th and 16th centuries. To make this mine working accessible to the public, it is necessary in the first place to stabilize underground voids and to ensure such internal microclimatic conditions so that any degradation of the mine working and any hazard to workers performing restoration operations and later to visitors will not occur. The contribution deals with the factors conditioning and affecting the stability of this system of mine workings.
Comparison of costs of rehabilitation works on Central Mine Waste Bank of Jan Šverma Mine in Žacléř
(Vysoká škola báňská-Technická Univerzita Ostrava. Hornicko-geologická fakulta, 2011) Krčmarská, Lucie; Růčková, Hana; Černá, Kristýna; Dorazil, Václav
This article pays particular attention to the evaluation of costs associated with the rehabilitation of the Central Mine Waste Bank of the Jan Šverma Mine in individual years. It mentions briefly the present state of the Central Mine Waste Bank and describes in short the works performed so far on the mine waste bank. Furthermore, the article describes specific types of rehabilitation; the description of partial operations is provided as well. The above-mentioned costs are quantified in a tabular summary for the years 2008 – 2011. These works were ordered by the Ministry of Industry and Trade through the state enterprise Fuel Combine Ústí nad Labem, which had absorbed the former state enterprise East Bohemian Coal Mines in Trutnov.
An eco-hydrological assessment of a watercourse examplified by a case study
(Vysoká škola báňská-Technická Univerzita Ostrava. Hornicko-geologická fakulta, 2011) Nováková, Jana; Melčáková, Iva
A small stream and its alluvial plain is an important component of a landscape. The mapping of actual condition of the stream basin and the proposal of its restoration study took place in the area of the Vařešinka stream basin. Monitoring and analyzing the selected parameters for a hydro-ecological evaluation is a useful basis for working out the System of Ecological Stability of the Landscape (USES) as a part of the municipal plan of the town of Hlučín.
Problems of cooling sealed fire areas in underground coal mines
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Magnusková, Jana; Matušková, Simona; Bartoňová, Jana; Pavelek, Zdeněk
In current mining practice, the most often used methods of cooling spatially sealed fire areas are: natural cooling, cooling by nitrogen, cooling by water and inert foam and cooling by combustion product recirculation. The technology of cooling with nitrogen represents two variants - the use of liquid nitrogen or nitrogen gas in the area of closed mine workings. From a technical and safety points of view the application of liquid nitrogen is today considered unsatisfactory, while the use of nitrogen gas seams to be highly safe technology for cooling explosion-proof sealed fire areas. Another possibility for cooling fire areas in deep coal mines is so-called natural cooling, where economical costs are indeed zero, but comparing to cooling processes induced by the application of cooling technologies a longer time period necessary for the natural refrigeration of fire areas causes financial losses.
Searching for old mine workings through the use of handheld GNSS receivers
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Mučková, Jitka
Old mine workings situated in a landscape pose a very serious problem from the point of view of people security and property protection. For that reason it is necessary to look for these mine workings and liquidate them. The use of handheld GNSS receivers is one of alternative methods of searching for old mine workings. The accuracy of handheld GNSS receives does not reach the level of accuracy of geodetic apparatuses, but it is sufficient for the purpose of searching for locations of old mine workings as is clear from the considerations given in this article. The test was performed at points of fundamental geodetic control.
Methodological problems of assessing spatial and temporal changes in the quality of mine
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Rapantová, Naďa; Grmela, Arnošt
An important, but largely neglected hydrogeological issue is the timing of mine water sampling during mining and after mine closure. Significant temporal and spatial changes in the “ageing“ of information, neglected effects of dynamic changes in the quality of mine water and its resources are causing severe degradation of information from mine water analyses and their possible misleading interpretation. Hydrogeological data are typical examples of multi-parametric information and if any hydrogeochemical data bases and their further processing are to be undertaken it is advisable to use methods of multi-parametric analyses followed by hydrogeochemical reaction models. Another limiting factor affecting the validity of results is the assessment of the issue of the representativeness of samples. The methodology applied on various mining sites is widely discussed in the paper.
Novel technique of active biomonitoring introduced in the Czech Republic : bioaccumulation of atmospheric trace metals in two moss species
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Motyka, Oldřich; Macečková, Barbora; Seidlerová, Jana; Krejčí, Blanka
Application of robust estimation methods for the analysis of outlier measurements
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Gašincová, Silvia; Gašinec, Juraj; Weiss, Gabriel; Labant, Slavomír
Agricultural residues from pyrolysis and their application in flotation
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Fečko, Peter; Zima, Jaroslav; Wittlingerová, Zdeňka
Controlling claims and liabilities and its use for identification of bankruptcy
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Sternadelová, Michaela
Geotouristic product - saline solutions of Dębieńsko
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Tobór-Osadnik, Katarzyna; Wyganowska, Małgorzata
Mining of coal seams under the main haulage level
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Chovanec, Josef; Urban, Petr; Pěgřímek, Ivo; Košnovský, Vítězslav
The regulation of ventilation by changing the operation of the main fan and its impact on the face worked under the main haulage level
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Zapletal, Pavel; Prokop, Pavel; Dorazil, Václav
Considerations concerning the stream of heat transferred from rock mass into mine ventilation air and the utilization of this heat by means of air cooling installations
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Knechtel, Józef
Evaluation of externalities in the long-time influenced mining area in Orlová-Poruba
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Polanská, Jana; Lacková, Eva; Stalmachová, Barbara
The article analyses the basic issues of procedural methods for evaluating the environment affected by the exploitation of mineral resources. The paper deals with the area, which was affected by black coal extraction already in the last century and is located in the area of Orlová-Poruba. Tthe first part explicates the basic concepts of landscape restoration issues, views of the methods of assessment and evaluation of the environment and related negative and positive externalities incurred. Another part of this paper assesses the affected area using the so-called Hessian method. Finally, we assess possible solutions of the evaluation of mostly positive externalities ocurred under the conditions in the Czech Republic and the desirability of the proposed new methodology for environmental assessment, including possible solutions.
Use of the method of net present value in bankruptcy proceedings of industrial enterprises
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Sternadelová, Michaela
One of the possible solutions to the debtor's bankruptcy provided by the Insolvency Act is to use the institute of reorganization. According to the Insolvency Act the reorganization is defined as the gradual satisfaction of creditors' claims, while preserving the debtor's business. The permission of reorganization of the debtor's business is subject to the preparation of a reorganization plan describing all measures to be taken, in order to reorganize the debtor's business. The article deals with the processing and quantification of measures to reorganize the business operations. It analyses the data recorded on found out investment costs, operating costs and revenues, using net present value methods, the profitability index and payback period to assess the proposed project. It assesses, whether the revenues from the proposed investment are sufficient, and ensure adequate satisfaction of the creditors.
Reflotation of coal flotation tailings using foam separation
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Juřicová, Hana; Tichánek, František
Froth separation is one of the new methods of flotation process in mineral treatment. This method allows a substantial increase in the size upper limit of separated grains. The contribution deals with the verification of the possibility of using the froth separation for retreatment of flotation tailings. For laboratory research samples of flotation tailings from the Paskov Mine treatment complex were used. The results confirmed the ability of froth separation to convert coarse coal grains into a concentrate. Grains with a grain size of 0.5 mm were successfully reflotated.
Impacts of measuring and numerical errors in LSM adjustment of Local Geodetic Network
(Vysoká škola báňská - Technická univerzita Ostrava. Hornicko-geologická fakulta, 2011) Gašincová, Silvia; Knežo, Dušan; Mixtaj, Ladislav; Harman, Peter
The Local Geodetic Network (LGN) adjustment is affected by various errors, whether arisen from measuring or calculating works. The measuring errors occurred in the consistent LGS measuring can be detected by control calculations in dL using redundant measurements. The numerical errors may be detected, or the accuracy of the formulas used can be verified by control calculations in a configuration matrix A and control relations, which should show zero values.

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