Browsing by Author "Wang Y"
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- ItemAn Evaluation of Mandarin Learning Apps Designed for English Speaking Pre-schoolers(Association for the Advancement of Computing in Education (AACE), 2019-09) Neumann M; Wang Y; Qi GY; Neumann DTouch screen tablets such as iPads are becoming increasingly popular as educational tools to support children’s first language learning in pre-schools. Apps can also be used to support early learning of a second language in English-speaking countries. However, little work has been done to evaluate these apps. The present research developed criteria for assessing Mandarin learning apps and applied them to evaluate 28 Mandarin apps for English-speaking pre-schoolers. The criteria included the domains of interactivity, usability, cultural awareness, collaboration, language and literacy content, and learning outcomes. The application of the criteria showed that half the Mandarin learning apps lacked key educational features essential for second language learning. The categories in which the apps scored most highly were interactivity, cultural awareness, usability, and language and literacy content. The apps scored lowest in the categories of collaboration and provision of learning outcomes. The findings suggest that further research is needed to inform best practice, app design, and to provide guidelines that help teachers select quality apps to support second language learning.
- ItemChallenges and responses: A Complex Dynamic Systems approach to exploring language teacher agency in a blended classroom(Castledown Publishers, 2022-04-12) Qi GY; Wang YThis is a qualitative examination of how a Chinese language teacher responded to challenges and developed her agency in a unique teaching and learning environment, termed as the blended classroom. The uniqueness of this classroom lies in its attendance by two cohorts of students at the same time – the face-to-face and the online groups. The online group joined the face-to-face group and the teacher via a synchronous online classroom called Blackboard Collaborate. Through analysing data from the teacher’s reflection, face-to-face and email interviews and the recordings of her blended class, this research unfolds a semester-long trajectory of her agency development in the blended classroom. Guided by the Complex Dynamic Systems Theory (CDST), we conclude that teacher agency is a system composed of multi-layers of subsystems and it is a product of the constant interaction amongst these interconnected and interdependent subsystems, with certain subsystems playing a more dominant role than others at a given stage of one’s agency development. This finding led to our proposal of a framework of teacher agency system. This research advances our understanding of teacher agency as a system in the context of online and blended learning.
- ItemExperimental Performance of a Solar Air Collector with a Perforated Back Plate in New Zealand(MDPI AG, 2020-03-18) Wang Y; Boulic M; Phipps R; Plagmann M; Cunningham CThis study investigates the thermal efficiency of a solar air heater (SAH), when it was mounted on a custom-made support frame, and was operated under different air mass flow rate. This SAH is composed of a transparent polycarbonate cover plate, a felt absorber layer, a perforated aluminium back plate and an aluminium frame. The ambient inlet air of this SAH is heated as it passes through the perforated back plate and over the felt absorber layer. The heated air is blown out through the outlet. Studies of SAHs with a similar design to this SAH were not found in the literature. The experiment was carried out at Massey University, Auckland campus, NZ (36.7◦ S, 174.7◦ E). The global horizontal solar irradiance, the ambient temperature and the wind speed were recorded using an on-site weather station. Temperature and velocity of the air at the outlet were measured using a hot wire anemometer. During the experiment, the air mass flow rate was between 0.022 ± 0.001 kg/s and 0.056 ± 0.005 kg/s. Results showed that when the SAH was operated at the airflow between 0.0054 kg/s and 0.0058 kg/s, the inlet air temperature and the wind speed (between 0 and 6.0 m/s) did not impact the temperature difference between the outlet air and the inlet air. The thermal efficiency of the SAH increased from 34 ± 5% at the airflow between 0.021 kg/s and 0.023 kg/s, to 47 ± 6% at the airflow ranging from 0.032 kg/s to 0.038 kg/s, to 71 ± 4% at the airflow of 0.056 ± 0.005 kg/s. The maximum thermal efficiency of 75% was obtained at the airflow of 0.057 kg/s. The effective efficiency of the SAH was 32 ± 5% at the airflow between 0.021 kg/s and 0.023 kg/s, 42 ± 6% at the airflow ranging from 0.032 kg/s to 0.038 kg/s, and 46 ± 11% at the airflow of 0.056 ± 0.005 kg/s.
- ItemRapid Spread of Severe Fever with Thrombocytopenia Syndrome Virus by Parthenogenetic Asian Longhorned Ticks.(2022-02) Zhang X; Zhao C; Cheng C; Zhang G; Yu T; Lawrence K; Li H; Sun J; Yang Z; Ye L; Chu H; Wang Y; Han X; Jia Y; Fan S; Kanuka H; Tanaka T; Jenkins C; Gedye K; Chandra S; Price DC; Liu Q; Choi YK; Zhan X; Zhang Z; Zheng ASevere fever with thrombocytopenia syndrome virus (SFTSV) is spreading rapidly in Asia. This virus is transmitted by the Asian longhorned tick (Haemaphysalis longicornis), which has parthenogenetically and sexually reproducing populations. Parthenogenetic populations were found in ≥15 provinces in China and strongly correlated with the distribution of severe fever with thrombocytopenia syndrome cases. However, distribution of these cases was poorly correlated with the distribution of populations of bisexual ticks. Phylogeographic analysis suggested that the parthenogenetic population spread much faster than bisexual population because colonization is independent of sexual reproduction. A higher proportion of parthenogenetic ticks was collected from migratory birds captured at an SFTSV-endemic area, implicating the contribution to the long-range movement of these ticks in China. The SFTSV susceptibility of parthenogenetic females was similar to that of bisexual females under laboratory conditions. These results suggest that parthenogenetic Asian longhorned ticks, probably transported by migratory birds, play a major role in the rapid spread of SFTSV.