“All the world’s a stage, and all the men and women are merely players” – Are you ready to play a role?

Among the different methodologies for TEFL, role-plays / simulations have been used as a common way for fostering students’ learning and practicing the use of English, especially students’ oral skills. In Macau, such skills are especially important for college students who are preparing to join the hospitality and tourism industry. These students will need to face different people from varied backgrounds, and when working in the front line, they will need to solve problems for their clients / customers. English, as the lingua franca, will naturally be used during the process. Consequently, students should acquire adequate communicative competence besides bettering their mastery of the English grammar. The objectives of this qualitative study were to find out students’ opinions on the effectiveness of role-plays for practicing oral skills and what the barriers were. Five Year 1 students of the Institute for Tourism Studies in Macau were interviewed. The responses given by these students showed their appreciation of role-play as a language learning activity and at the same time, their reluctance to be actively involved in the activity as a result of cultural and psychological barriers. The findings suggest that ESP instructors could put more thought into creating suitable environments that allow students to take up different roles with ease

Converting rain into drinking water: Quality issues and technological advances

With growing pressures on water supplies worldwide, rainwater harvesting is increasingly seen as a viable option to provide drinking water to an ever expanding population, particularly in developing countries. However, rooftop runoff is not without quality issues. Microbiological and chemical contamination have been detected in several studies, well above local and international guidelines, posing a health risk for consumers. Our research explores the use of silver ions, combined with conventional filtration and settling mechanisms, as a safe and affordable model for purification that can be applied on a small scale. The complete systems were installed and tested in rural communities in a Mexican semi-arid region. Efficiencies up to 99.9% were achieved in the removal of indicator microorganisms, with a marked exception where cross-contamination from external seepage occurs. Sites without overhanging branches or with relatively clean surfaces show an absence of total coliforms in the untreated runoff, compared with others where values as high as 1,650 CFU/100 ml were recorded. Thus, given adequate maintenance, the system can successfully deliver high quality drinking water, even when storage is required for long periods of time. © IWA Publishing 2011

Pomeranchuk Instability in a non-Fermi Liquid from Holography

The Pomeranchuk instability, in which an isotropic Fermi surface distorts and becomes anisotropic due to strong interactions, is a possible mechanism for the growing number of experimental systems which display transport properties that differ along the $x$ and $y$ axes. We show here that the gauge-gravity duality can be used to describe such an instability in fermionic systems. Our holographic model consists of fermions in a background which describes the causal propagation of a massive neutral spin-two field in an asymptotically AdS spacetime. The Fermi surfaces in the boundary theory distort spontaneously and become anisotropic once the neutral massive spin-two field develops a normalizable mode in the bulk. Analysis of the fermionic correlators reveals that the low-lying fermionic excitations are non-Fermi liquid-like both before and after the Fermi surface shape distortion. Further, the spectral weight along the Fermi surface is angularly dependent and can be made to vanish along certain directions.Comment: Updated version to appear in PRD. New version has WKB analysis of spectral intensity in ordered phas

Emotion Regulation in Three Cultures: A Multi-contextual and Multi-level Study of Preschool-Age Children in the United States, China and Japan

Emotion regulation (ER) has been studied intensively, yet there are major gaps in research on the critical role of contexts and cultural meanings of these contexts in the development of ER. Moreover, ER involves dynamic regulation at behavioral and neurobiological levels, systems that become sensitive to cultural contexts/priorities for adaptation. However, we know little about how children’s ER systems are sensitive to cultural contexts/priorities, and at which levels of regulatory processing. In my dissertation, using multi-level and multi-contextual assessments of preschoolers in the United States, China and Japan, I will first examine cross-cultural similarities and differences in behavioral aspects of emotion expression and regulation among preschoolers living in three cultures. Second, I will determine whether children’s neurobiological systems of ER are differentially sensitive to contexts. Finally, I will examine how cultural contexts/priorities may shape children’s ER at both behavioral and physiological levels (emotional expressions and cortisol reactivity). I conclude by discussing implications for understanding ER as a complex system in cross-cultural perspectives.PHDPsychologyUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/163027/1/kaip_1.pd

Internalizing and Externalizing Behaviors of Children of Alcoholics in Heterogeneous Family Structures

Honors (Bachelor's)PsychologyUniversity of Michiganhttp://deepblue.lib.umich.edu/bitstream/2027.42/91849/1/kaip.pd

The Landscape of Realized Homologous Recombination in Pathogenic Bacteria

Recombination enhances the adaptive potential of organisms by allowing genetic variants to be tested on multiple genomic backgrounds. Its distribution in the genome can provide insight into the evolutionary forces that underlie traits, such as the emergence of pathogenicity. Here, we examined landscapes of realized homologous recombination of 500 genomes from ten bacterial species and found all species have “hot” regions with elevated rates relative to the genome average. We examined the size, gene content, and chromosomal features associated with these regions and the correlations between closely related species. The recombination landscape is variable and evolves rapidly. For example in Salmonella, only short regions of around 1 kb in length are hot whereas in the closely related species Escherichia coli, some hot regions exceed 100 kb, spanning many genes. Only Streptococcus pyogenes shows evidence for the positive correlation between GC content and recombination that has been reported for several eukaryotes. Genes with function related to the cell surface/membrane are often found in recombination hot regions but E. coli is the only species where genes annotated as “virulence associated” are consistently hotter. There is also evidence that some genes with “housekeeping” functions tend to be overrepresented in cold regions. For example, ribosomal proteins showed low recombination in all of the species. Among specific genes, transferrin-binding proteins are recombination hot in all three of the species in which they were found, and are subject to interspecies recombination

Canine liver transplantation under nva cyclosporine versus cyclosporine

The immunosuppressive qualities and other features of a new cyclosporine (CsA) analogue, Nva 2-cyclosporine (Nva 2-CsA) were examined using canine orthotopic liver allografts. The mean survival time was 11.8±9.6 (SD) days in dogs without treatment, 60.8±34.4 days with Nva 2-CsA and 65.1±33.0 days with CsA. Functional abnormalities indicating toxic side effects were not noted either with Nva 2-CsA or with CsA. Using the same oral dose, the rate of blood level rise and the amount of the rise were greater with Nva2-CsA. Histopathologically, Nva2-CsA the treatment was associated with the same degree of hydropic vocuolation in the pars recta of the proximal tubules as CsA treatment. Thus, in the dog, Nva2-CsA had identical immunosuppressive properties as CsA, with no functionally detectable toxicity affecting the liver and kidney. © 1986 by The Williams & Wilkins Co