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Search Results: 1 - 10 of 22909 matches for " Yuan Yuan "
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Non-Negativity Preserving Numerical Algorithms for Problems in Mathematical Finance  [PDF]
Yuan Yuan
Applied Mathematics (AM) , 2018, DOI: 10.4236/am.2018.93024
We give a study result to analyze a rather different, semi-analytical numerical algorithms based on splitting-step methods with their applications to mathematical finance. As certain subsistent numerical schemes may fail due to producing negative values for financial variables which require non-negativity preserving. These algorithms which we are analyzing preserve not only the non-negativity, but also the character of boundaries (natural, reflecting, absorbing, etc.). The derivatives of the CIR process and the Heston model are being extensively studied. Beyond plain vanilla European options, we creatively apply our splitting-step methods to a path-dependent option valuation. We compare our algorithms to a class of numerical schemes based on Euler discretization which are prevalent currently. The comparisons are given with respect to both accuracy and computational time for the European call option under the CIR model whereas with respect to convergence rate for the path-dependent option under the CIR model and the European call option under the Heston model.
The Negative Effect of Brand Attachment: How Attachment Styles Help Explain Anti-Brand Behavior  [PDF]
Yuan Yuan, Ming Lei
Open Journal of Business and Management (OJBM) , 2017, DOI: 10.4236/ojbm.2017.51013
Abstract: Enterprises tend to attach importance to consumer brand relationship in the marketing context, especially the establishment and culture of attachment relationship, and they try to maintain brand loyalty through consumers’ high self-connection. But they ignore the possibility that brand attachment leads to anti-brand behavior; however, previous study was less involved in the negative effects of brand attachment and negative brand behavior. So on the basis of relevant research literature review, we firstly illustrate two kinds of incentive of anti-brand behavior: 1) the loss of functional benefit; 2) the violation of self-concept, and then discussed the theoretical framework that brand attachment leads to anti-brand behavior from the perspective of consumers’ individual characteristics. The purpose of this paper is to explore the strong brand attachment relationship between consumers and brand when and why it will be transformed into a strong negative brand behavior, and thus provide a new perspective on the study of brand attachment.
The Panzar-Rosse Statistic Revisited  [PDF]
Hiroshi Gunji, Yuan Yuan
Theoretical Economics Letters (TEL) , 2017, DOI: 10.4236/tel.2017.71004
Abstract: In this note, we prove that even if the technology of firms exhibits increasing returns to scale, the Panzar-Rosse statistic in a monopolistic competitive market is still available and has a negative value. Further, we show that the statistic would be greater than unity if firms with increasing-returns-to-scale technology were to choose a saddle point under certain conditions. This implies that the value of greater than unity is not actually observed.
Optimization of Dynamic Portfolio Insurance Model  [PDF]
Yuan Yao
Journal of Mathematical Finance (JMF) , 2012, DOI: 10.4236/jmf.2012.22019
Abstract: This paper establishes a dynamic portfolio insurance model under the condition of continuous time, based on Meton's optimal investment-consumption model, which combined the method of replicating dynamic synthetic put option using risk-free and risk assets. And it transfers the problem of investor's individual intertemporal dynamic portfolio insurance decision into a problem of static utility maximization under condition of continuous time, and give the optimal capital combination strategies corresponding to the optimal wealth level of the portfolio insurers, and compares the difference of strategies between this model and Merton model. The conclusions show that investors' optimal strategies of portfolio insurance are not dependent on their wealth, but market risk. That is to say, the higher the risk is, the more the demand of portfolio insurance is.
Reduced Partition Function Ratio in the Frequency Complex Plane: A Mathematical Approach  [PDF]
Jie Yuan
Open Journal of Geology (OJG) , 2014, DOI: 10.4236/ojg.2014.412049
Abstract: This paper gives a mathematical approach to calculate the fractionation factor of isotopes in a general cluster (also known as super-molecule), which composes of necessary chemical effect within three bonds outside the interested atom(s). The cluster might have imaginary frequencies after being optimized in quantum softwares. The approach includes the contribution of the difference, which is resulted from the substitution of heavy and light isotopes in the cluster, of vibrations of imaginary frequencies to give precise prediction of isotope fractionation factor. We call the new mathematical approximation “reduced partition function ratio in the frequency complex plane (RPFRC)”. If there is no imaginary frequency for a cluster, RPFRC is simplified to be Urey (1947) or Bigeleisen and Mayer (1947) formula. Final results of this new algorithm are in good agreement with those in earlier studies.
A New Explanation of K. J. Arrow’s Impossibility Theorem: On Conditions of Social Welfare Functions  [PDF]
Zheng Yuan
Open Journal of Political Science (OJPS) , 2015, DOI: 10.4236/ojps.2015.51003
Abstract: Social welfare function theory belongs to the cross disciplines of economics, sociology, management science and political science. The social welfare function conditions were first proposed by Kenneth Joseph Arrow, and served as the golden criteria in this field. For a long time, “the expressions of these conditions are not satisfactory”, as Arrow said himself, and he has continued to revise them. The author of this article has attempted to structure a mathematical expression that would meet Arrow’s conditions. We found that the conditions of “unrestricted domain” and “independent alternatives independence” could not always be expressed simultaneously. This led us to conduct further research on the relationships among Arrow’s conditions. We find that there are logical conflicts among some of these conditions, and we discuss these issues in this article.
The Happier One Is, the More Creative One Becomes: An Investigation on Inspirational Positive Emotions from Both Subjective Well-Being and Satisfaction at Work  [PDF]
Leo Yuan
Psychology (PSYCH) , 2015, DOI: 10.4236/psych.2015.63019
Abstract: The main purpose of this research is to show that positive thinking, from subjective well-being and job satisfaction, will greatly enhance inspirational experience. The target participants are 180 designers in Taiwan from two design associations. They are among the top 15 design associations in Google search. According to the findings, both subjective well-being and job satisfaction are highly correlated with creative inspiration. Furthermore, intrinsic satisfaction of a job is highly correlated with inspirational experiences, while having a psychological well-being seems to have a positive correlation with inspiration. The two kinds of correlation mentioned above indicate that creativity and inspiration have a close relationship with our emotional responses, which means that the happier an employee feels, and the better well-being s/he has, the greater is the probability that s/he will generate creative ideas.
Reflections on Local Specialties and Gastronomic Tourism  [PDF]
Yuan Su
Chinese Studies (ChnStd) , 2015, DOI: 10.4236/chnstd.2015.41003
Abstract: Local food as an essential part of tourist experience has aroused many scholars’ attention, and accumulated a wealth of research results. In 2000, scholars who were inspired by the theme of endless food festivals and other food-related activities, put forward gastronomic tourism. It has now become an important branch of special-interest tourism. From only one of the six elements of tourism attractions to gastronomic tourism, the relationship of local food and tourism has become increasingly close. Giving the scarcity of research on tourist food preferences and motivations of gastronomic tourism, this paper aims to advance the understanding of gastronomic tourism by using indepth interviews. The study explores motivational factors for local food and tourist food preferences when traveling in different regions of China. Its findings indicate that most Chinese tourists treat local food as the extension of the daily dietary experience. Some recommendations are therefore offered in the study with the hope of better meeting the diverse dietary needs of tourists.
Influence of Mg2+, Fe2+ and Zn2+ Cations on 13C-18O Bonds in Precipitated Aragonite, Calcite and Dolomite: An ab Initio Study  [PDF]
Jie Yuan
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.55023
Abstract: The influence of metal cations on 13C-18O bonds in carbonates is still under debate. This paper used ab initio method to investigate this kind of influence of Mg2+, Fe2+ and Zn2+ cations on 13C-18O bonds in precipitated aragonite, calcite and dolomite. The polynomials of Δ47 and reduced partition function ratios (RPFRs) for 13/12C,
Slope Year for the U-Pb Dating Method and Its Applications  [PDF]
Jie Yuan
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.55032
Abstract: The slope year tslope for the U-Pb dating method is given as \"\", where λ238 and λ235 are the decay constants for 238U and 235U, respectively, and k is the slope of the tangent line at a point on either the Concordia or Discordia line. These two lines are determined by the
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