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The effectivity of timber skidding process evaluated through the time consumption is mostly affected by the technology, ergonomic demands and environmental factors connected with the technology used. There is still an inadequate research eff ort aimed to time consumption and work effectivity of forest skidders in Slovakia, which is one of the causes of insufficient payments for their work. The paper compares time consumptions for particular work operations of the forest skidders calculated from the data from field measurements compared with standardized forest skidders time consumptions published in the Collection of performance standards (MLVH 1992) of the Ministry of Agriculture of the Slovak Republic. Measuring the time consumption of skidders was carried out using the methods of continual time study, i.e. by connecting the work day snapshot with the fluent chronometry. The results confirmed statistically significant differences in time consumption for particular work operations such as winching and work on the forest landing between cable and cable-grapple skidder. Generalized linear models confirmed that particular work operations (winching, skidding and works on the forest landing) in both technologies are affected by the same production factors. We found significant differences of the basic standardized times for the particular work operations (Calculated standardized times on based measured time versus actual standards of the Slovak Ministry) only in the case of the HSM 805 HD skidder. [ABSTRACT FROM AUTHOR]

Copyright of Listy Cukrovarnicke a Reparske is the property of VUC Praha a.s. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Listy Cukrovarnicke a Reparske is the property of VUC Praha a.s. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Listy Cukrovarnicke a Reparske is the property of VUC Praha a.s. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The paper describes the development of household consumption expenditures from a longer perspective. Currently, there are available data for more than forty years and it means that lots of information about changes in structure and main tendencies can be studied. Since the emphasis is put on the comparable time series, it was necessary to prepare transformation of original data into national accounts. Historical figures on private consumption were published in line with the Material Product System that is not fully comparable with the System of National Accounts. Data on private consumption reflecting only material part of consumption had to be transformed into household consumption expenditures covering both expenditures for material and non-material products. The process of transformation of original data reflecting socialist statistical system is briefly described, as well as main differences. Key points of transformation are illustrated on selected years. Finally, original data are compared with reconstructed ones and differences are explained. The analysis provides useful information about main changes in consumption expenditures by CZ-COICOP. Finally, some often discussed issues like the relative increase of expenditures connected with housing, decrease of the share of foodstuff etc. can be proven now. [ABSTRACT FROM AUTHOR]

Copyright of Listy Cukrovarnicke a Reparske is the property of VUC Praha a.s. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Studies of Socio-Economics & Humanities / Socioekonomické a Humanitní Studie is the property of College of Banking, Banking Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Listy Cukrovarnicke a Reparske is the property of VUC Praha a.s. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Natural gas as well as oil is the key energy resources in the world. This fuel is one of the exhaustible and non-renewable energy sources. The fact is that someday it will come to its exhaustion. Declining offer probably will cause the increasing gas prices. The aim of this paper is to predict possible further development of the price of natural gas according to its historical development stocks. The partial aim is to determine the degree of dependence of natural gas prices on its stocks. Firstly, the analyzed gas extraction by using the SWOT analysis and the analysis of supply and demand for gas are realized. On the supply side, the states with the largest reserves of natural gas are defined. On the demand side, the biggest consumers of natural gas are identified. The dependence between two quantitative variables (the average price of natural gas and proven reserves of gas in each year since 1984) is further investigated by using correlation analysis. The price determined on the basis of historical development of the above variables is predicted by using polynomials. In conclusion, the comparison of results with analyzes of renowned institutions is accomplished. [ABSTRACT FROM AUTHOR]

The aim of this article is to evaluate the impact of China's energy security policy on Sino-American relations. The first chapters analyze the latest developments in China's energy consumption, including some projections into the future. Next, the paper defines the main actors of Chinese energy security policy, considers its nature, and explores China's specific strategies to increase its energy security at the regional and global level. Finally, it determines the nature of current and future Sino-American relations from the perspective of growing Chinese energy dependency. Finally, the article recommends the most appropriate strategies to manage the Chinese energy growth and strengthen the stability of the global energy system. The paper reflects general patterns of energy security, as defined by the main theorists in the field, as well as the most important views on the future development of Sino-American relations. It is based on the main presumption that due to the interdependence of the global energy market, Chinese demand for energy recourses shouldn't be handled by the politics of containment, but by China's incorporation into the community of energy consumers. [ABSTRACT FROM AUTHOR]

Demand theory dealt with a number of authors and historically passed through its development until after the determination of the demand, breakdown kinds of inquiries, mathematical determination of demand function, graphical derivation, to the mathematical and graphical analysis of the determinants of demand in the short and long term. This article outlines the historical background of the theory of supply and demand functions described. Furthermore, the closer we pay problems classical model of demand in terms of short-term consumption. The article is more focused on describing the demand for durable goods and its practical application, which is processed on the basis of statistical data, particularly from the Czech Statistical Office and the Association of automotive suppliers. Finally, we summarize the results of the application and put it in the context of short-term and long-term view in terms of the demand for durables consumption. [ABSTRACT FROM AUTHOR]

The technological development and the growing rate of using the internet in the population brings intensifying competition and increasing customer demands. The current customer is very unstable, as well as his varying requirements. Therefore it is important so that every company is prepared for daily changes in its activities. This article deals with using of internet and on-line shopping on the market of the Slovak republic. The first part is a theoretical explanation of the basic issues related to e-business. The second part deals with the use of internet in shopping process by customers in Slovak republic. At work were used methods of comparison, analysis and synthesis of theoretical knowledge of literature, articles and other publications about e-business and Customer Relationship Management and statistical methods for the examination of secondary sources. [ABSTRACT FROM AUTHOR]