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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Factor Va Directs Catalysis by Factor Xa During Prothrombin Activation

Bukys, Michael Anothony 15 July 2008 (has links)
No description available.
2

Theoretical incentives vs. perceived motives for using interest rate derivatives in Swedish corporations / Teoretiska incitament och verkliga motiv för användning av räntederivat i svenska storföretag

Fodor, Daniel January 2015 (has links)
The purpose of this research is to highlight if contemporary practices for using interest rate derivatives in large non-financial Swedish corporations are consistent with theoretical incentives for using such derivative instruments. Most theoretical incentives were developed before the financial crisis of 2007-08. The introduction of new regulations, accounting practices and pricing methods has changed the prices of derivatives and the administrative burden related to hedging. Traditional academic literature commonly gives eight incentives for why corporations use interest rate derivatives (described further in the thesis). Following surveys and interviews with 13 relevant corporate professionals, the study finds that three of the theoretical incentives strongly motivate corporate managers’ use of interest rate derivatives. Four other theoretical incentives are found to partially explain motives for corporate managers’ hedging practices, whilst one of the theoretical incentives is found to be an irrelevant motive for corporate managers in practice.   In addition to the tested incentives, the study finds that Swedish corporations which occasionally raise capital in non-functional currencies actively use cross-currency swaps to convert outstanding non-functional debt currency to the company’s functional currency. The practice is commonly recognised amongst industry professionals but not widely cited in academia.   Compared to 10-15 years ago, treasury functions in Swedish corporations are found to require more knowledge in accounting and administration and less market savvy. During this period, the number of dealers in Swedish corporate treasury departments has been reduced significantly, as corporations have effectively outsourced part of their market operations to banks. / Denna uppsats undersöker om verkliga motiv och praxis för användning av räntederivat i svenska storföretag är förenliga med teoretiska incitament för räntederivatanvändning som ofta förekommer i akademisk litteratur. De flesta teoretiska förklaringsmodeller för företags användning av räntederivat utvecklades och beskrevs innan den globala finanskrisen 2007-08. Efter krisen har värderingen av räntederivat samt det administrativa arbetet kring instrumenten förändrats till följd av implementering av nya finansiella regler, bokföringsregler och prissättningsmetoder. Akademisk litteratur beskriver generellt åtta teoretiska incitament om varför företag använder räntederivat (vilka finns sammanfattade i detta arbete). För att verifiera teoretiska grunder och medvetenhet kring dessa teorier genomfördes en enkätundersökning samt djupintervjuer med totalt 13 beslutsfattare inom räntederivat i svenska storföretag. Studiens resultat ger starkt stöd till att tre av de teoretiska incitamenten i hög grad överensstämmer med verkliga motiv för användning av räntederivat, samt att fyra incitament delvis kunde förklara verkliga motiv, medan stöd saknades för ett teoretiskt incitament. Utöver de åtta testade incitamenten visar studiens resultat att det finns ett ytterligare motiv för användning av räntederivat: räntevalutaswappar används av flera svenska storföretag som emitterar obligationer i utländsk valuta för att konvertera pengar till företagets funktionella valuta. Förfarandet är känt inom industrin men understuderat i akademisk litteratur. Studien visar att kunskap inom bokföring och administration relaterat till finansiella derivat har blivit allt viktigare för svenska storföretags internbanker, medan vikten av att ha en aktiv marknadssyn minskat, jämfört mot 10-15 år sedan. Över denna tidsperiod har antalet handlare i storföretagens internbanker minskat kraftigt, då flera av funktionerna i praktiken har outsourcats till banker.
3

Valorisation des ajustements Xva : de l’exposition espérée aux risques adverses de corrélation / Pricing of XVA adjustments : from expected exposures to wrong-way risks

Iben Taarit, Marouan 08 January 2018 (has links)
Nous entamons ce rapport de thèse par l’évaluation de l’espérance espérée qui représente une des composantes majeures des ajustements XVA. Sous l’hypothèse d’indépendance entre l’exposition et les coûts de financement et de crédit, nous dérivons dans le chapitre 3 une représentation nouvelle de l’exposition espérée comme la solution d’une équation différentielle ordinaire par rapport au temps d’observation du défaut. Nous nous basons, pour le cas unidimensionnel, sur des arguments similaires à ceux de la volatilité locale de Dupire. Et pour le cas multidimensionnel, nous nous référons à la formule de la Co-aire. Cette représentation permet d’expliciter l’impact de la volatilité sur l’exposition espérée : Cette valeur temps fait intervenir la volatilité des sous-jacents ainsi que la sensibilité au premier ordre du prix, évalués sur un ensemble fini de points. Malgré des limitations numériques, cette méthode est une approche précise et rapide pour la valorisation de la XVA unitaire en dimension 1 et 2.Les chapitres suivants sont dédiés aux aspects du risque de corrélations entre les enveloppes d’expositions et les coûts XVA. Nous présentons une modélisation du risque général de corrélation à travers une diffusion stochastique multivariée, comprenant à la fois les sous-jacents des dérivés et les intensités de défaut. Dans ce cadre, nous exposons une nouvelle approche de valorisation par développements asymptotiques, telle que le prix d’un ajustement XVA correspond au prix de l’ajustement à corrélation nulle, auquel s’ajoute une somme explicite de termes correctifs. Le chapitre 4 est consacré à la dérivation technique et à l’étude de l’erreur numérique dans le cadre de la valorisation de dérivés contingents au défaut. La qualité des approximations numériques dépend uniquement de la régularité du processus de diffusion de l’intensité de crédit, et elle est indépendante de la régularité de la fonction payoff. Les formules de valorisation pour CVA et FVA sont présentées dans le chapitre 5. Une généralisation des développements asymptotiques pour le cadre bilatéral de défaut est adressée dans le chapitre 6.Nous terminons ce mémoire en abordant un cas du risque spécifique de corrélation lié aux contrats de migration de rating. Au-delà des formules de valorisation, notre contribution consiste à présenter une approche robuste pour la construction et la calibration d’un modèle de transition de ratings consistant avec les probabilités de défaut implicites de marché / The point of departure of this thesis is the valuation of the expected exposure which represents one of the major components of XVA adjustments. Under independence assumptions with credit and funding costs, we derive in Chapter 3 a new representation of the expected exposure as the solution of an ordinary differential equation w.r.t the default time variable. We rely on PDE arguments in the spirit of Dupire’s local volatility equation for the one dimensional problem. The multidimensional extension is addressed using the co-area formula. This forward representation gives an explicit expression of the exposure’s time value, involving the local volatility of the underlying diffusion process and the first order Greek delta, both evaluated only on finite set of points. From a numerical perspective, dimensionality is the main limitation of this approach. Though, we highlight high accuracy and time efficiency for standalone calculations in dimensions 1 and 2.The remaining chapters are dedicated to aspects of the correlation risk between the exposure and XVA costs. We start with the general correlation risk which is classically modeled in a joint diffusion process for market variables and the credit/funding spreads. We present a novel approach based on asymptotic expansions in a way that the price of an XVA adjustment with correlation risk is given by the classical correlation-free adjustment to which is added a sum of explicit correction terms depending on the exposure Greeks. Chapter 4 is consecrated to the technical derivation and error analysis of the expansion formulas in the context of pricing credit contingent derivatives. The accuracy of the valuation approach is independent of the smoothness of the payoff function, but it is related to the regularity of the credit intensity model. This finding is of special interest for pricing in a real financial context. Pricing formulas for CVA and FVA adjustments are derived in Chapter 5, along with numerical experiments. A generalization of the asymptotic expansions to a bilateral default risk setting is addressed in Chapter 6.Our thesis ends by tackling the problem of modeling the specific Right-Way Risk induced by rating trigger events within the collateral agreements. Our major contribution is the calibration of a rating transition model to market implied default probabilities
4

Aplikační možnosti programovatelného zesilovače LNVGA / Application possibilities of LNVGA programmable amplifier

Sobotka, Josef January 2015 (has links)
This thesis deals with the theoretical description of the qualitative characteristics and parameters of some modern active elements, also discusses the theory of signal flow graphs at the level applicable for the following frequency filter design methods. The thesis is also generally discussed the issue with the circuit simulator PSpice modeling theory and voltage amplifiers on the basic 6-levels. The practical part of the work is divided into two parts. The first practical part is dedicated to design four levels of simulation model of components LNVGA element. The second practical part contains detailed theoretical proposals for three circuit structures implementing the frequency filters 2nd order (based on the basic structure of the OTA-C) using signal flow graphs with configuration options of Q and fm based on the parameters of active elements in the peripheral structure and their verification with prepared LNVGA model layers.

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