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Dauguma šiuolaikinių finansų valdymo ir investicijų mokslinių darbų akcentuoja finansinės rizikos valdymo svarbą finansinių institucijų veiklai. Augančioje finansų rinkoje aktyviais dalyviais tampa įmonės, kurių ilgalaikei sėkmei įtakos turi finansinių lėšų valdymas. Magistro darbe išanalizuoti ir susisteminti įvairių Lietuvos ir užsienio autorių teoriniai ir praktiniai iždo rizikų valdymo aspektai, sukeliantys riziką veiksniai, rizikos rūšys, iždo rizikų įvertinimo ir valdymo metodai. Parodyta, kad pagrindinis rizikos valdymo tikslas nebūtinai yra jos išvengti, o suprasti kritinius rizikos veiksnius ir profesionaliai juos valdyti. Atlikus analizę AB „Mažeikių nafta“ nustatytos šios iždo rizikos: rinkos (valiutų kurso, palūkanų normos, biržinių prekių kainos kitimo), likvidumo, kredito, operacinė. Panaudojus rizikos vertės VaR@95% metodo skaičiavimus, įvertintas iždo rizikų poveikis bendrovės finansinių išteklių formavimui. Patvirtinta autorės suformuluota mokslinio tyrimo hipotezė, kad iždo rizikų strateginis valdymas įmonėje stabilizuoja įmonės pinigų srautus, sumažina įmonės nuostolius dėl finansų rinkos neigiamų pokyčių, pagerina pelningumo prognozavimą. / Most of today’s finance management and investment scientific papers emphasize the importance of finance risk management for the financial institution activities. The companies the long-term success of which comes from the funds management become the active participants in the growing financial market. The Master’s Thesis analyses and systemizes the theoretical and practical aspects of treasury risk management, factors causing risk, types of risks, methods of treasury risk evaluation and management as described by various Lithuanian and foreign authors. It identifies that the main goal of risk management is not necessarily to prevent the risk but to understand the critical risk factors and manage them in professional way. After the analysis has been made the following treasury risks were identified for AB Mažeikių Nafta: market (currency rate exchange, interest rate, commodity price fluctuation), liquidity, credit, operations. Using risk value VaR@95% method calculations the treasury risk impact to the formation of the company financial resources was evaluated. The scientific research hypothesis of the author stating that treasury risk strategy management in the Company stabilizes the Company’s cash flows, reduces loses resulted from negative changes in the finance market, improves the profitability forecasting was proved to be correct.

This master thesis includes 65 pages, 5 pictures, 4 tables, 41 literary sources, in the Lithuanian language. The object of this final work is leasing. The purpose of this study is to discuss theory and practice of leasing, describe problems, which hinder Lithuanian leasing market development and prognoses leasing market perspectives. In order to reach the purpose of this work it is important to solve the following problems: • to specify the essence and necessity of a leasing; • to overdraw the advantages and disadvantages of leasing; • to research the main leasing stages in Lithuania; • to research main leasing evolution stages in world and in Lithuania; • to structure leasing payments; • to make an analysis of Lithuanian leasing market. Specifing the essence and necessity of a leasing, overdrawing the advantages and disadvantages of leasing, researching the main leasing stages in Lithuania and analysising the leasing market of Lithuanian it was used books of national and foreign authors, various literature source of teaching means and scientific articles. Also it was used the methods of comparison, calculation of real present value, structural analysis and quantitative (qualitative) changes analysis.

The analysis of the cuttings age influence for the economical results in Pagramantis regional park in this thesis is analyzed. Subject of study – the forests of the II – III group in Pagramantis regional park. Purpose of study - evaluate the losing in the II-III group forests of Pagramantis regional park due to the bigger cutting age. Study metods – the metods of data sort and selection, analysis and synthesis, comparison and graphical display were used in this survey. Study results. The rip II – III group forests (accoding to the economic forests cutting age) in Pagramantis regional park seize 1007 ha. Their volume – 277 856 m3. The losing due to the bigger cutting age in these forests is 3,27 mln. Lt. The biggest part of losing devolves for the state forest andit is 3,00 mln. Lt. (91,7 %). In the private forests and it is 0,27 mln. Lt. (8,3 %) . The base part of the losing is sustained in the II forest group ( 3,16 mln. Lt.) and among the tree spices – in the pine and spruce forests.

Credit default swaptions (CDS options) are credit derivatives that are widely used by finan-cial institutions such as banks and hedging companies to manage their credit risk. These options are usually priced using Black-Scholes model, but the assumptions underlying this model do not always hold especially when solving complex financial problems. The proposed solution is to use numerical methods such as finite difference method (FDM) to approximate the solution of the Black-Scholes PDE in cases where closed form solutions cannot be obtained. The pricing of swaptions are important in financial markets, hence we specifically discuss the pricing of interest rate swaptions, CDS options, commodity swaptions and energy swap-tions using Black-Scholes model. Simple parabolic PDE known as heat equation given at (Higham, 2004) forms a foundations to understand the application of FDM when solving a PDE. Since, Black-Scholes PDE is also a parabolic equation it is transformed to a form of a heat equation (diffusion equation) by applying change of variables technique. FDM, specifically Crank-Nicolson method can be applied to the heat equation but in this dissertation it is applied directly to the Black-Scholes PDE to approximate its solution. Therefore, it is preferable to use Crank-Nicolson method because it is known to be second- order accurate, unconditionally stable, very flexible, suitable and can accommodate varia- tions in financial problems, (Duffy, 2008). The stability of this method is investigated using a matrix approach because it accommodates the effect of boundary conditions. To test the convergence of Crank-Nicolson method, it is compared with the Black-Scholes method used in (Tucker and Wei, 2005) to price CDS options. Conclusively the results obtained by Crank-Nicolson method to price CDS options are similar to those obtained using Black-Scholes method. / Thesis (MSc (Risk Analysis))--North-West University, Potchefstroom Campus, 2013.

Credit default swaptions (CDS options) are credit derivatives that are widely used by finan-cial institutions such as banks and hedging companies to manage their credit risk. These options are usually priced using Black-Scholes model, but the assumptions underlying this model do not always hold especially when solving complex financial problems. The proposed solution is to use numerical methods such as finite difference method (FDM) to approximate the solution of the Black-Scholes PDE in cases where closed form solutions cannot be obtained. The pricing of swaptions are important in financial markets, hence we specifically discuss the pricing of interest rate swaptions, CDS options, commodity swaptions and energy swap-tions using Black-Scholes model. Simple parabolic PDE known as heat equation given at (Higham, 2004) forms a foundations to understand the application of FDM when solving a PDE. Since, Black-Scholes PDE is also a parabolic equation it is transformed to a form of a heat equation (diffusion equation) by applying change of variables technique. FDM, specifically Crank-Nicolson method can be applied to the heat equation but in this dissertation it is applied directly to the Black-Scholes PDE to approximate its solution. Therefore, it is preferable to use Crank-Nicolson method because it is known to be second- order accurate, unconditionally stable, very flexible, suitable and can accommodate varia- tions in financial problems, (Duffy, 2008). The stability of this method is investigated using a matrix approach because it accommodates the effect of boundary conditions. To test the convergence of Crank-Nicolson method, it is compared with the Black-Scholes method used in (Tucker and Wei, 2005) to price CDS options. Conclusively the results obtained by Crank-Nicolson method to price CDS options are similar to those obtained using Black-Scholes method. / Thesis (MSc (Risk Analysis))--North-West University, Potchefstroom Campus, 2013.

我們使用一個新方法來評價美式或歐式的或有求償權，其受到本地利率和權益價值的影響。我們使用標的資產的遠期價格的樹狀圖，進而對或有求償權作定價。其中我們評價了美式與歐式的股票選擇權，以及利率期貨和利率期貨選擇權。 / We introduce a methodology for pricing American or European style contingent claims, influenced by domestic interest rates, and equity prices. Instead of using trees of short-term interest rate, bond price or forward interest rate, this tree method will use the forward prices of underlying assets to derive implied binomial spot-price tree and in turn price long term American or European options, and interest rate futures and interest rate futures options.

本文研究目的係以台灣作實證研究，針對這樣一個逐漸開放的小型經濟體系，分析影響其短期利率變動的因素，並驗證其短期利率的變動是否僅受到國外因素（如國外利率）變動的影響，或者是僅受到國內因素（如預期物價膨脹、貨幣供給、景氣、財政及市場資金狀況等）變動的影響，亦或者是兩者皆有。本文以1989年4月到2004年12月這段期間月資料的時間數列為樣本，利用Dickey & Fuller(1981)之ADF單根檢定法來確定變數之數列特性，並採用Johanson (1988)所提出最大概似估計法來分析影響台灣短期利率變動的因素。本文實證結果顯示，台灣31-90天商業本票利率與消費者物價指數年增率、實質經濟成長率、意外貨幣成長、美國三個月國庫券利率、國庫券發行餘額及金融機構平均淨超額準備皆為I(1)數列，並具有一組共整合關係，顯示彼此間具有共同趨勢。其中商業本票與消費者物價指數年增率、實質經濟成長率、意外貨幣成長及美國三個月國庫券利率呈現顯著正向關係，而與金融機構平均淨超額準備呈現顯著負向關係，由此可知，台灣短期利率不僅受到國內因素的影響,亦同時受到國外因素的影響。 / The purpose of this paper is to analyze the determinants of short-term interest rate variation in Taiwan. This paper attempts to examine whether the external factors or internal factors influence the volatility of the short-term rate in Taiwan. ADF unit root test is adopted to check the characteristics of variable series; Johansen’s maximum likelihood method is used to analyze the determinants of short-term interest rate variation in Taiwan based on monthly data from April 1989 to December 2004.The empirical results shows that the rate of commercial paper, consumer price growth rate, real economic growth rate, unanticipated M2 growth rate, U.S. treasury bill rate, balance on treasury bill and net excess reserves are I(1) time series. Besides, those variables have one cointegration relationship with common trend. Specifically, the rate of commercial paper is significantly positively correlated with consumer price growth rate, real economic growth rate, unanticipated M2 growth rate and U.S. treasury bill rate, and is significantly negatively correlated with net excess reserves. Therefore, the variation of short-term interest rate in Taiwan is determined by both external and internal factors.

Counterparty Credit Risk and Interest Rate Derivatives Pricing Jakub Černý Abstract: This thesis deals with the pricing of OTC financial derivatives including the coun- terparty credit risk (CCR). It focuses on the interest rate derivatives for which the interest rate must be modeled as random. This is where they differ from the pricing of other derivatives. The credit valuation adjustment (CVA) concept is used to calculate CCR which is in line with current banking regulation Basel III. When we assume the independence of the underlying asset and the credit quality of the counterparty, we obtain an analytical expression of CVA. However, if the independence is violated, the CVA calculation becomes quite complicated. Specifically, the CVA of the inter- est rate swap (IRS) is calculated mainly using the simulation approach which is time and computationally consuming. Therefore, we bring two new methods for IRS CVA calculation where the CVA is expressed in a semi-analytical form. These methods use copula functions, particularly the Gaussian copula and the upper Fréchet bound, and we compare them numerically with a complex simulation study. Furthermore, we pro- pose a method of calibration of the correlation coefficient and we determine the impact of changes in the intensity of default on the final CVA with four...

This thesis represents an in-depth empirical study of the dependence structures within the term structure of interest rates. Firstly, a comprehensive overview of term structure modelling literature and methods is provided together with a summary of theoretical notions regarding the use of high-frequency data and spectral analysis. Contrary to most studies, the frequency-domain approach is employed, with a special focus on dependency across various quantiles of the joint distribution of the term structure. The main results are obtained using the quantile cross-spectral analysis, a new robust and non-parametric method allowing to uncover dependence structures in quantiles of the joint distribution of multivariate time series. The results are estimated using a dataset consisting of 15 years worth of high-frequency tick-by-tick time series of US Treasury futures. Complex dependence structures are revealed showing signs of both cyclicity and dependence in various parts of the joint distribution of the term structure in the frequency domain. JEL Classification C49, C55, C58, E43, G12, G13 Keywords term structure of interest rates, yield curves, high-frequency analysis, spectral analysis, inter- est rate futures Author's e-mail adam.nedved@fsv.cuni.cz Supervisor's e-mail barunik@fsv.cuni.cz