Yunfan Wang

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Objects, whether toys or not, are likely to become the center of children's game, which can trigger children's exploration and imagination, and build the world's environmental and psychological statements by manipulating something, to enhance the autonomy of children and inspire their creativity. This paper, based on scaffolding learning theory, puts(More)
4-Methyloctanoic acid (MOA) and 4-methylnonanoic acid (MNA) are the main compounds responsible for "sweaty" odor of mutton. A novel method for their determination has been developed and validated. Hollow fiber supported liquid membrane (HF-SLM) was applied to selectively extract MOA and MNA prior to gas chromatography (GC) analysis. For HF-SLM, the donor(More)
INTRODUCTION The superior vena cava (SVC) can act as an origin of atrial fibrillation (AF). The complex structure and special conductive properties of the SVC can result in complicated atrial tachycardia (AT), atrial flutter, or AF. SYMPTOMS AND CLINICAL FINDINGS We report a case of the clinical observation of various kinds of AT and AF in 1 patient.(More)
This paper presents a cluster-based adaptive weight switching median filter. Clustering analysis and a linear function is combined to capture local image statistics. In term of the local information, an iteration function is constructed to subtract impulses from corrupted image and thus noise detector is defined. After the noisy pixels are identified, in(More)
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