Iskanje po katalogu digitalne knjižnice

Opis: The use of a double-skin façade (DSF) is a quite new approach in the building renovation process, complementing conventional renovation strategies. A double-skin façade is an envelope wall construction that consists of two transparent surfaces separated by a cavity and can essentially improve the thermal and acoustic resistance of the building envelope. The main double-skin wall components are usually composed of a hardened external single glazing pane and a double or triple thermal insulating internal glass pane, which are connected to the frame structure. Recently, many studies have analysed the thermal and acoustic performance of DSF elements, but almost none in terms of structural behaviour, especially in terms of determining the racking resistance of such wall elements. Moreover, with a view to reduce the global warming potential, an eco-friendly timber frame instead of a commonly used steel, aluminium or plastic frame is studied in this analysis. However, structurally combining timber and glass to develop an appropriate load-bearing structural element is a very complex process involving a combination of two materials with different material properties, where the type of bonding can be selected as a crucial parameter affecting the racking resistance range. Since the costs of experiments performed on such full-scale DSF elements are very high and such experiments are time-consuming, it is crucial to develop special mathematical models for analysing the influence of the most important parameters. Therefore, the main goal of this paper is to develop the finite element mathematical model of the studied DSF structural elements with a highly ecological solution by using a timber frame. In the second step, the developed model is further implemented in the numerical analysis of racking stiffness and followed by a comprehensive parametric numerical study on different parameters influencing the horizontal load-bearing capacity of such DSF timber elements. The obtained results indicate that the new approach of the developed load-bearing prefabricated timber DSF elements can essentially improve racking resistance and stiffness compared with the widely studied timber-glass single-skin wall elements and can thus be fully recommended especially in the structural renovation process of old buildings.
Ključne besede: timber, glass, double-skin façades, racking resistance, mathematical modelling, numerical analysis, Finite Elements Methods (FEM)
Objavljeno v DKUM: 11.03.2025; Ogledov: 0; Prenosov: 4
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Opis: The subsequent bachelor’s thesis comprises an investment report with equity valuation of Krka, d.d. company, the largest Slovenian company and one of the leading generic pharmaceutical companies in region. Overall, the financial sector is coping with low interest rates and more and more investors are willing to enter the capital markets directly. The Slovenian equity markets was struggling to pick up the pace after the last major financial crisis, which was almost 10 years ago. The bull trend in other major and biggest markets in the world is on to set new records day by day. We try to find out if the company under scrutiny is attractive for investors and what upside potential it has in the future. The analysis is presented trough most appropriate, popular and renowned techniques that surround equity research and is followed by the creation of final recommendation. Those are Discounted Cash Flow (DCF), Economic Value Added (EVA), Dividend Discount Model (DDM), Relative Multiples Valuation (RMV). Additionally, the approaches like Porter’s five forces analysis, SWOT analysis, Sensitivity analysis, Altman Z-score, Piotroski F-score, Beneish M-score, and Monte Carlo Simulation (MSC) were made. Since equity markets provide a bigger risk for investors, we try to investigate how risky is a particular company and sector. The investment risks and Weighted Average Cost of Capital (WACC) will help us do that. Risks and the future business surrounding also include macroeconomic analysis, which is also performed and helps us understand the topic under discussion better.. The key part of the thesis presents the building of financial valuation model with many variables and weighting it accordingly. The final fair value price is set and commented. In the conclusion, we summarise all our findings. Furthermore, some relevant facts are exposed and projected into the forecasted period. At the end we can conclude that the Value-based Management (VBM) gives clear result and projects a path for future development. The company that was used for the research is a perfect example how VBM methods used for valuation can provide us with broader picture and inform investors about the company. On the other hand, the methods can also provide a large source of information that can be useful to the company’s management.
Ključne besede: Macroeconomic analysis, valuation methods, Monte Carlo simulation, intrinsic value, risk profile
Objavljeno v DKUM: 30.11.2017; Ogledov: 3049; Prenosov: 314
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Opis: A protein, Tm1631 from the hyperthermophilic organism Thermotoga maritima belongs to a domain of unknown function protein family. It was predicted that Tm1631 binds with the DNA and that the Tm1631–DNA complex is an endonuclease repair system with a DNA repair function (Konc et al. PLoS Comput Biol 9(11): e1003341, 2013). We observed that the severely bent, strained DNA binds to the protein for the entire 90 ns of classical molecular dynamics (MD) performed; we could observe no significant changes in the most distorted region of the DNA, where the cleavage of phosphodiester bond occurs. In this article, we modeled the reaction mechanism at the interface between Tm1631 and its proposed ligand, the DNA molecule, focusing on cleavage of the phosphodiester bond. After addition of two Mg2+ ions to the reaction center and extension of classical MD by 50 ns (totaling 140 ns), the DNA ligand stayed bolted to the protein. Results from density functional theory quantum mechanics/molecular mechanics (QM/MM) calculations suggest that the reaction is analogous to known endonuclease mechanisms: an enzyme reaction mechanism with two Mg2+ ions in the reaction center and a pentacovalent intermediate. The minimum energy pathway profile shows that the phosphodiester bond cleavage step of the reaction is kinetically controlled and not thermodynamically because of a lack of any energy barrier above the accuracy of the energy profile calculation. The role of ions is shown by comparing the results with the reaction mechanisms in the absence of the Mg2+ ions where there is a significantly higher reaction barrier than in the presence of the Mg2+ ions.
Ključne besede: methods of analysis, computer science, magnesium ions, preteins, DNA
Objavljeno v DKUM: 26.06.2017; Ogledov: 1205; Prenosov: 448
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Ključne besede: economics, economy, statistical methods, statistics, computer science, computer application, software, computer programmes, data base, index numbers, indexes, probability, realibility, distributions, hypotheses testing, data, sampling, regression analysis, correlations, time series, mistakes, problem solving, solution of problems, statistical analysis, application, business process, accounting, cases, case study, textbooks, exercises
Objavljeno v DKUM: 01.06.2012; Ogledov: 3006; Prenosov: 60
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Ključne besede: economics, economy, business operation, business operation of the enterprise, statistical methods, statistics, computer science, computer application, software, computer programmes, Excel, Internet, computer networks, data base, probability, realibility, distributions, hypotheses testing, data, sampling, regression analysis, correlations, time series, mistakes, problem solving, solution of problems, statistical analysis, application, business process, accounting, cases, case study, textbooks, exercises
Objavljeno v DKUM: 01.06.2012; Ogledov: 3097; Prenosov: 40
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