An Account of Development of Performance Art in China from 1979-2010

The 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

Genome-wide associations and detection of potential candidate genes for direct genetic and maternal genetic effects influencing dairy cattle body weight at different ages

International audienceBackground: Body weight (BW) at different ages are of increasing importance in dairy cattle breeding schemes, because of their strong correlation with energy efficiency traits, and their impact on cow health, longevity and farm economy. In total, 15,921 dairy cattle from 56 large-scale test-herds with BW records were genotyped for 45,613 single nucleotide polymorphisms (SNPs). This dataset was used for genome-wide association studies (GWAS), in order to localize potential candidate genes for direct and maternal genetic effects on BW recorded at birth (BW0), at 2 to 3 months of age (BW23), and at 13 to 14 months of age (BW1314). Results: The first 20 principal components (PC) of the genomic relationship matrix ( G ) grouped the genotyped cattle into three clusters. In the statistical models used for GWAS, correction for population structure was done by including polygenic effects with various genetic similarity matrices, such as the pedigree-based relationship matrix ( A ), the G -matrix, the reduced G-matrix LOCO (i.e. exclusion of the chromosome on which the candidate SNP is located), and LOCO plus chromosome-wide PC. Inflation factors for direct genetic effects using A and LOCO were larger than 1.17. For G and LOCO plus chromosome-wide PC, inflation factors were very close to 1.0. According to Bonferroni correc-tion, ten, two and seven significant SNPs were detected for the direct genetic effect on BW0, BW23, and BW1314, respectively. Seventy-six candidate genes contributed to direct genetic effects on BW with four involved in growth and developmental processes: FGF6, FGF23, TNNT3, and OMD. For maternal genetic effects on BW0, only three signifi-cant SNPs (according to Bonferroni correction), and four potential candidate genes, were identified. The most signifi-cant SNP on chromosome 19 explained only 0.14% of the maternal de-regressed proof variance for BW0.Conclusions: For correction of population structure in GWAS, we suggest a statistical model that considers LOCO plus chromosome-wide PC. Regarding direct genetic effects, several SNPs had a significant effect on BW at different ages, and only two SNPs on chromosome 5 had a significant effect on all three BW traits. Thus, different potential candidate genes regulate BW at different ages. Maternal genetic effects followed an infinitesimal model

Applying the Theory of Variation in Teaching Reading

This paper presents a model of collaborative and reflective professional development for teachers that focuses on student learning. The model comprises a cyclical series of lessons that were carried out in Hong Kong with three classes of Secondary Four (Grade 10) students (94 students. The lessons were designed to develop the reading skill of inferring characters’ traits from the events of a story—a skill that presents difficulties for many secondary school students of English as a second language. The learning activities incorporated in the research lessons were underpinned by the Theory of Variation proposed by Marton and Booth (1997), which allows students to discern the critical features of the particular skill to be learnt. Findings indicate that the lessons were successful in helping the students to develop the skill. Teachers also benefitted from the collaborative reflections and investigations. The paper suggests that this model may enhance both student learning and teacher professional development

Global Structure Identifiability and Reconstructibility of an NDS with Descriptor Subsystems

This paper investigates requirements on a networked dynamic system (NDS) such that its subsystem interactions can be solely determined from experiment data or reconstructed from its overall model. The NDS is constituted from several subsystems whose dynamics are described through a descriptor form. Except regularity on each subsystem and the whole NDS, no other restrictions are put on either subsystem dynamics or subsystem interactions. A matrix rank based necessary and sufficient condition is derived for the global identifiability of subsystem interactions, which leads to several conclusions about NDS structure identifiability when there is some a priori information. This matrix also gives an explicit description for the set of subsystem interactions that can not be distinguished from experiment data only. In addition, under a well-posedness assumption, a necessary and sufficient condition is obtained for the reconstructibility of subsystem interactions from an NDS descriptor form model. This condition can be verified with each subsystem separately and is therefore attractive in the analysis and synthesis of a large-scale NDS. Simulation results show that rather than increases monotonically with the distance of subsystem interactions to the undifferentiable set, the magnitude of the external output differences between two NDSs with distinct subsystem interactions increases much more rapidly when one of them is close to be unstable. In addition, directions of probing signals are also very important in distinguishing external outputs of distinctive NDSs.These findings are expected to be helpful in identification experiment designs, etc.Comment: 15 pages, 4 figure