To create realistic and expressive virtual humans, we need to develop better models of the processes and dynamics of human emotions and expressions. A first step in this effort is to develop means to systematically induce and capture realistic expressions in real humans. We conducted a series of studies on human emotions and facial expression using the Emotion Evoking Game (EVG) and a high-spee...

An improved frequency domain interval Gramianbased model reduction scheme for discrete time systems is presented. It is first shown that two of the main results presented in the model reduction method of [20] are incorrect. Improved methods which overcomes these shortcomings are then presented. Improved methods not only yields stable reduced-order models but also have easily computable frequenc...

The study of behaviour of a machine-tool needs to know the values of dynamic and static stiffnesses. The purpose of this article is to be able to estimate these values with the same device, handy enough. Different methods of determination of static stiffness are presented and results are compared between them. Measure results of the last method are processed by a software developed with Matlab.

The paper considers a tariff retaliation model in which two countries set tariffs strategically in an exchange economy. In the classes of homothetic and quasi-linear preferences, I find conditions that guarantee existence of a trading Nash equilibrium. These conditions imply that the offer curves of the countries are convex to the origin, and thus, the best response function of each country is ...

Compared with the study on acoustic quality of western music and opera, few studies were carried out on how the contemporary people evaluate acoustic attributes of Chinese traditional opera. In this study the subjective preference values of acoustic parameters for Peking opera such as sound pressure level, reverberation time and frequency response curve of RT were revealed through laboratory ex...

This paper derives an analytical expression for an impulse-response function for a vector autoregression with multivariate GARCH errors, where the vector of conditional means is a function of the conditional variances. We also provide the appropriate interpretation of an impulse-response function for such models and suggest interesting empirical issues that can be addressed within this framework.

We have used polarized Cu K-edge extended x-ray absorption fine structure to investigate the local lattice displacements in the charge-ordered La1.48Nd0.4Sr0.12CuO4 system. The temperature-dependent distance broadening, given by the Debye-Waller factors of the Cu-O bonds measuring local lattice fluctuations, shows a clear steplike increase below the charge stripe order temperature. The results ...

We compute for the first time the decay width of Λ-hypernuclei in a rela-tivistic mean-field approximation to the Walecka model. Due to the small mass difference between the Λ-hyperon and its decay products—a nucleon and a pion—the mesonic component of the decay is strongly Pauli blocked in the nuclear medium. Thus, the in-medium decay becomes dominated by the non-mesonic, or two-body, componen...

We compute for the first time the decay width of Λ-hypernuclei in a relativistic mean-field approximation to the Walecka model. Due to the small mass difference between the Λ-hyperon and its decay products—a nucleon and a pion—the mesonic component of the decay is strongly Pauli blocked in the nuclear medium. Thus, the in-medium decay becomes dominated by the non-mesonic, or two-body, component...