43 research outputs found
An Account of Development of Performance Art in China from 1979-2010
No full textThe research study aims to raise questions about and gain new insights into the development of performance art in China.
The development of performance art in China is set out in a chronological account of the events and art works that illustrate the development of a permissive, open-ended medium with endless variables. The events and works included in this study are executed by Chinese artists impatient with the limitations of traditional or established forms and determined to take their performance art works directly to the public. Following the rapid socio-economic development that started in the late 1970's, soon after the end of the Cultural Revolution and the start of economic reform.
The chronological account of the development of Chinese performance art explains how Chinese artists, in creating their work, draw freely on a number of disciplines and media including literature, poetry, theatre, music, dance, architecture and painting, as well as video, film, slides and narrative. The account also illustrates how Chinese performance art has gradually moved away from the traditions of Chinese performance and how performance art works often promote interpretive individualism.
Research shows that Chinese artists choose performance art to break free from the dominant media and the constraints of working within the evolving social and political environment in China. Research further shows that artists use performance art as a provocation to respond to changes. Finally, performance art is gaining acceptance from the public in recent Chinese socio-economic development
Tetraquarks, hadronic molecules, meson-meson scattering, and disconnected contributions in lattice QCD
No full textThere are generally two types of Wick contractions in lattice QCD calculations of a correlation function --- connected and disconnected ones. The disconnected contribution is difficult to calculate and noisy, thus it is often neglected. In the context of studying tetraquarks, hadronic molecules and meson-meson scattering, we show that whenever there are both connected and singly disconnected contractions, the singly disconnected part gives the leading order contribution, and thus should never be neglected. As an explicit example, we show that information about the scalar mesons sigma, f0(980), a0(980) and kappa will be lost when neglecting the disconnected contributions
Continuity and Evolution: The Idea of “Co-creativity” in Chinese Art
No full textThis paper seeks to explore an important characteristic of both traditional and contemporary Chinese art, that is, co-creativity. The author believes that co-creativity is a particular Chinese cultural sensibility that establishes the continuity of Chinese art and allows it to endure despite historical, societal and political changes throughout the centuries. This paper starts with an introduction of the idea of co-creativity in Chinese culture. One of its embodiments is the relationship between 'yin' and 'yang'. 'Yin 'and 'yang' both engender and fulfill each other, which is a co-relational and co-creative process. It then analyzes how the idea of co-creativity is demonstrated in traditional landscape painting through the expression of the oneness with nature and invitation to join a journey with the artist. Lastly, it demonstrates this continious co-creative cultural sensibility through analyzing two contemporary artists’ works. The author reads the submissive openness and vulnerability in Chinese female artist Chen Lingyang’s works as a continuity of the co-creative spirit of 'yin' and 'yang', nature and human. Chen’s work, rooted in her cultural sensibility, expresses a totally different statement of women’s desires and conditions than does that of American feminist artists Judy Chicago and Carolee Schneemann. Likewise, performance artist Ma Liuming’s 'Fen-Ma Liuming in… 'series seems inspired by nature’s image of co-creating the world. Different as these works may be in their formal aspects—from painting to poetry, from photography to performance— “co-creativity” is at the heart of Chinese cultural expression
Hadron-hadron interactions from lattice QCD: isospin-2 ππ scattering length
No full textWe present results for the I = 2 pi pi scattering length using Nf = 2 + 1 + 1 twisted mass lattice QCD for three values of the lattice spacing and a range of pion mass values. Due to the use of Laplacian Heaviside smearing our statistical errors are reduced compared to previous lattice studies. A detailed investigation of systematic effects such as discretisation effects, volume effects, and pollution of excited and thermal states is performed. After extrapolation to the physical point using chiral perturbation theory at NLO we obtain M(pi)a(0) = -0.0442(2)(stat)((+4)(-0))sys.DFG [CRC110]; National Science Foundation of China (NSFC) [o.11335001]SCI(E)[email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]
Chiral study of the a(980) resonance and π η scattering phase shifts in light of a recent lattice simulation
No full textWe investigate the a(980) resonance within chiral effective field theory through a three-coupled-channel analysis, namely, πη, K¯K, and πη′. A global fit to recent lattice finite-volume energy levels from πη scattering and relevant experimental data on a πη event distribution and the γγ→πη cross section is performed. Both the leading and next-to-leading-order analyses lead to similar and successful descriptions of the finite-volume energy levels and the experimental data. However, these two different analyses yield different πη scattering phase shifts for the physical masses for the π, K, η, and η′ mesons. The inelasticities, the pole positions in the complex energy plane, and their residues are calculated both for unphysical and physical meson masses
Towards a precise determination of the scattering amplitudes of the charmed and light-flavor pseudoscalar mesons
No full textWe study the scattering of the light-flavor pseudoscalar mesons (π,K,η) off the ground-state charmed mesons (D,Ds) within chiral effective field theory. The recent lattice simulation results on various scattering lengths and the finite-volume spectra both in the moving and center-of-mass frames, most of which are obtained at unphysical meson masses, are used to constrain the free parameters in our theory. Explicit formulas to include the S- and P-wave mixing to determine the finite-volume energy levels are provided. After a successful reproduction of the lattice data, we perform a chiral extrapolation to predict the quantities with physical meson masses, including phase shifts, inelasticities, resonance pole positions and the corresponding residues from the scattering of the light pseudoscalar and charmed mesons
Interactions of Charmed Mesons with Light Pseudoscalar Mesons from Lattice QCD and Implications on the Nature of the
No full textInteractions of charmed mesons with light pseudoscalar mesons from lattice QCD and implications on the nature of the D s 0 * ( 2317 )
No full textWe study the scattering of light pseudoscalar mesons (π,K) off charmed mesons (D,Ds) in full lattice QCD. The S-wave scattering lengths are calculated using Lüscher’s finite volume technique. We use a relativistic formulation for the charm quark. For the light quark, we use domain-wall fermions in the valence sector and improved Kogut-Susskind sea quarks. We calculate the scattering lengths of isospin-3/2 Dπ, Dsπ, DsK, isospin-0 DK¯¯¯ and isospin-1 DK¯¯¯ channels on the lattice. For the chiral extrapolation, we use a chiral unitary approach to next-to-leading order, which at the same time allows us to give predictions for other channels. It turns out that our results support the interpretation of the D∗s0(2317) as a DK molecule. At the same time, we also update a prediction for the isospin breaking hadronic decay width Γ(D∗s0(2317)→Dsπ) to (133±22) keV
Optimization for capacitor-driven coilgun based on equivalent circuit model and genetic algorithm
No full textThis paper presents an analysis and optimal design of a capacitor-driven inductive coilgun. The electromagnetic FEA model of the capacitor-driven inductance coilgun is established and simulated by using Ansoft. In order to speed up the optimization, an equivalent circuit is designed for simulation of the performances of coilgun. A piece-wise model of projectile is built to account for the eddy current. The simulated results are compared with the modeling of FEA value to verify the developed circuit model. It shows that the results are in a good agreement. The optimization of coilgun is achieved by employing the genetic algorithm (GA) based on the circuit model. It is suggested that the proposed algorithm achieves a better result in the energy efficiency of the coilgun system, and obtain a higher muzzle velocity of the projectile. © 2009 IEEE
