Heston’s Stochastic Volatility Model Implementation‚ Calibration and Some Extensions Sergei Mikhailov‚ Ulrich Nögel Fraunhofer Institute for Industrial Mathematics‚ Kaiserslautern‚ Germany‚ Mikhailov@itwm.fhg.de; Noegel@itwm.fhg.de 1 Introduction The paper discusses theoretical properties‚ shows the performance and presents some extensions of Heston’s (1993) stochastic volatility model. The model proposed by Heston extends the Black and Scholes (1993) model and includes it as a special case
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Software Qual J (2006) 14: 159–178 DOI 10.1007/s11219-006-7600-8 Usability measurement and metrics: A consolidated model Ahmed Seffah · Mohammad Donyaee · Rex B. Kline · Harkirat K. Padda C Springer Science+Business Media‚ Inc. 2006 Abstract Usability is increasingly recognized as an important quality factor for interactive software systems‚ including traditional GUIs-style applications‚ Web sites‚ and the large variety of mobile and PDA interactive services. Unusable user interfaces
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modeling was originated 30 years ago and up to date is being used in mostly every field of work. It has become a mainstream practice in managing human resources. Over the years‚ the methods used has evolved. The trends used in the approach of competency models in education‚ training‚ assessments and development of workers has changed mainly because of its response to the changes that also occurs in the organizations and different workplace. It may also change because of the needs of the people. During those
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Channel Models A Tutorial 1 V1.0 February 21‚ 2007 Please send comments/corrections/feedback to Raj Jain‚ jain@acm.org Please send comments to jain@acm.org 1 This work was sponsored in part by WiMAX Forum. Channel Models: A Tutorial 2 V1 Created on 2/21/2007 TABLE CONTENTS CHANNEL MODELS: A TUTORIAL..................................................................................................................................3 CHANNEL MODELS: A TUTORIAL.....................
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Prison Models There are three models of prisons that have been prominent in American since the early 1940’s: custodial‚ rehabilitative‚ and reintegration. Each model is designed differently based on its overriding goal‚ and this affects the physical design‚ policies‚ and programs that are implemented within each of the models. Custodial Model Archaic Purpose: Control‚ focus is on maintaining security and order. Goal: Punishment‚ this is the best way to provide deterrence against
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Chapter 7 Survival Models Our final chapter concerns models for the analysis of data which have three main characteristics: (1) the dependent variable or response is the waiting time until the occurrence of a well-defined event‚ (2) observations are censored‚ in the sense that for some units the event of interest has not occurred at the time the data are analyzed‚ and (3) there are predictors or explanatory variables whose effect on the waiting time we wish to assess or control. We start with some
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Logic model Brief history of evaluation and the logic Model Scriven (1991) would argue that evaluation has been around for many years‚ and is only now recognised as a discipline. He would go further and say it is like a knowledge which has been around for a decade before we were discussing its use‚ nature and logic. It is essentially different from science in its methods and thought. He would argue it is only recently we have appreciated its value as a discipline we still have a long way to go.
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What are the main limitations of the Solow model? Discuss with reference to theory and evidence. The Solow Model‚ also known as the neoclassical growth model or exogenous growth model is a neoclassical attempt created in the mid twentieth century‚ to explain long run economic growth by examining productivity‚ technological progress‚ capital accumulation and population growth. This model was contributed to by the works of Robert Solow‚ in his essay ‘A Contribution to the Theory of Economic Growth’
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THE PROCESSES OF BUILDING BRAND EQUITY This paper combines the conceptual framework of customer-based brand equity (Keller‚ 1993) and six-stage model of brand evolution (Goodyear‚ 1996) to develop the processes of building brand equity. Focuses of brand equity building are suggested for each stage. Key words: brand equity‚ brand knowledge‚ brand evolution INTRODUCTION Successfully building‚ managing‚ and tracking the brand equity of brands are main goals of brand management. The brand strategies
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Models of the Atom: a Historical Perspective John Dalton Early Greek Theories • 400 B.C. - Democritus thought matter could not be divided indefinitely. • This led to the idea of atoms in a void. fire Democritus • 1800 -Dalton proposed a modern atomic model based on experimentation not on pure reason. All matter is made of atoms. Atoms of an element are identical. Each element has different atoms. Atoms of different elements combine in constant ratios to form compounds. • Atoms are rearranged
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