Zimmermannova J.,Moravian University College Olomouc
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis | Year: 2015
This paper is focused on the first ex-post analysis of the EU ETS in its 3rd trading period in the Czech Republic, based on the analysis of the behaviour of the key EU ETS sector - combustion processes - and the decision making of Czech electricity and heat producers within the EU ETS. Firstly, the general overview of the EU ETS is presented, including the important scientific studies in this area. The characteristics of the EU ETS in the Czech Republic are described. The second chapter, methodology and data, describes the method, the questionnaire survey. The key chapter, results, focuses on the most important outputs obtained from the questionnaire survey. The discussion part deals with particular characteristics of the EU ETS in the 3rd trading period in the Czech Republic. Focusing on the behaviour of Czech companies in the analyzed period, it is obvious, that the companies within the combustion processes group understood the EU ETS much more as an additional environmental tax or fee, instead of commodity, which can be traded on the exchange. Moreover, the EU ETS had no impact on their environmental investments planning in years 2013 and 2014.
Khitilova E.,Moravian University College Olomouc |
Jurova M.,Brno University of Technology
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis | Year: 2014
The present paper is concerned with the following questions: what are the advantages and disadvantages of the method of complex evaluation (MCE) scoring model as compared with that designed by Tomek. Both scoring models are compared (MCE and Tomek) presenting the results using a simple illustrative case study. The criteria for evaluating the scoring model variants include: the amount of information necessary, level of difficulty, details of the results, the object comparison. A single illustrative case study is used. This paper is concerned with presenting the scoring model for evaluating the existing suppliers in the first instance for production enterprises. Other existing scoring-models aren't present and compare. This paper aims to compare the scoring model by Tomek and that of the method of complex evaluation (MCE) by Chytilova. Other scientific aim of this paper consists in the description of business conditions which MCE is suitable. The result of this paper is the description of differences in evaluation processes between two scoring-models (by Tomek and MCE) presenting the advantages and disadvantages of MCE. The comparison of the scoring model variants focuses on formulating the conditions of business under which MCE is more suitable than the scoring-model by Tomek. This paper is concentrates on middle-sized production enterprises. It is oriented towards the evaluation of suppliers in the first instance. It only compares the supplier evaluation processes used by the enterprises. For illustration purposes data from enterprise managements are used. Only the existing suppliers are evaluated in this paper. © 2014, Mendel University of Agriculture and Forestry Brno. All rights reserved.
Mandal B.,Visva Bharati University |
Sarkar S.,Visva Bharati University |
Sarkar S.,Moravian University College Olomouc |
Sarkar P.,Visva Bharati University
Journal of Physical Chemistry C | Year: 2015
We present results of our theoretical investigation on the electronic structure of porphyrin functionalized graphene quantum dots(GQDs). We put our emphasis on how the electronic energy levels of GQDs are modified because of the functionalization by porphyrin molecules. Our study shows that the HOMO-LUMO gap of the GQD-porphyrin hybrid material is lower as compared to GQD of same size. The possibility of forming type-II nanohybrids is explored by varying either the size of the QD or by attaching different functional groups to the porphyrin moiety. We also analyzed the absorption spectra of one model GQD-porphyrin nanocomposite. We found that GQD-porphyrin hybrid material form type-II band alignment for GQD of smaller size. The hybrid material with larger QDs show type-I band alignment however they can be made type-II by proper attachment of the electron donating group to the porphyrin molecule. The type-II band alignment lowers the chance of electron-hole recombination. The free energy of electron injection, that is, the energy gap between LUMO of porphyrin and LUMO of GQD increases with increasing the size of the GQD. So, on the basis of our theoretical study, we suggest that the GQD-porphyrin nanohybrid material with larger GQD may be a good candidate for the application in solar cell. © 2015 American Chemical Society.
Pavlovic A.,Moravian University College Olomouc |
Pavlovic A.,Comenius University |
Krausko M.,Comenius University |
Libiakova M.,Comenius University |
Adamec L.,Academy of Sciences of the Czech Republic
Annals of Botany | Year: 2014
Backround and AimsIt has been suggested that the rate of net photosynthesis (AN) of carnivorous plants increases in response to prey capture and nutrient uptake; however, data confirming the benefit from carnivory in terms of increased AN are scarce and unclear. The principal aim of our study was to investigate the photosynthetic benefit from prey capture in the carnivorous sundew Drosera capensis.MethodsPrey attraction experiments were performed, with measurements and visualization of enzyme activities, elemental analysis and pigment quantification together with simultaneous measurements of gas exchange and chlorophyll a fluorescence in D. capensis in response to feeding with fruit flies (Drosophila melanogaster).Key ResultsRed coloration of tentacles did not act as a signal to attract fruit flies onto the traps. Phosphatase, phophodiesterase and protease activities were induced 24 h after prey capture. These activities are consistent with the depletion of phosphorus and nitrogen from digested prey and a significant increase in their content in leaf tissue after 10 weeks. Mechanical stimulation of tentacle glands alone was not sufficient to induce proteolytic activity. Activities of β-D-glucosidases and N-acetyl-β-D-glucosaminidases in the tentacle mucilage were not detected. The uptake of phosphorus from prey was more efficient than that of nitrogen and caused the foliar N:P ratio to decrease; the contents of other elements (K, Ca, Mg) decreased slightly in fed plants. Increased foliar N and P contents resulted in a significant increase in the aboveground plant biomass, the number of leaves and chlorophyll content as well as AN, maximum quantum yield (Fv/Fm) and effective photochemical quantum yield of photosystem II (ΦPSII). ConclusionsAccording to the stoichiometric relationships among different nutrients, the growth of unfed D. capensis plants was P-limited. This P-limitation was markedly alleviated by feeding on fruit flies and resulted in improved plant nutrient status and photosynthetic performance. This study supports the original cost/benefit model proposed by T. Givnish almost 30 years ago and underlines the importance of plant carnivory for increasing phosphorus, and thereby photosynthesis. © The Author 2013.
Keprt A.,Moravian University College Olomouc
Advances in Intelligent Systems and Computing | Year: 2014
The benefit of each key algorithm also depends on many additional supporting algorithms it uses. It turned out that class of problems related to dimensionality reduction of binary spaces used for statistical analysis of binary data, e.g. binary (Boolean) factor analysis, is dependent on the possibility and ability of performing pseudo-division of binary matrices. The paper presents novelty computation approach to it, giving an algorithm for reasonably fast exact solution. © Springer International Publishing Switzerland 2014.