45 research outputs found

    Relationship of epistemological belief and program learning environment across a two-year curriculum

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    Conference Theme: Responsible Teaching and Sustainable LearningEpistemological beliefs are robustly found to predict quality of learning process and outcomes. Empirical studies of interventional nature have been conducted to explore pedagogies that may help fostering epistemological beliefs and results were promising. However, the sustainability of such effected epistemic change across students’ years of study is largely unexplored. In light of this, the global climate or learning environment of prog...postprin

    The Correlation of Retinal Nerve Fiber Layer Thickness With Blood Pressure in a Chinese Hypertensive Population

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    To investigate the association between retinal nerve fiber layer (RNFL) thickness and blood pressure (BP) in subjects with systemic hypertension. Subjects with systemic hypertension on anti-hypertensive medications were screened by fundus photography and referred for glaucoma work-up if there was enlarged vertical cup-to-disc (VCDR) ratio ≥0.6, VCDR asymmetry ≥0.2, or optic disc hemorrhage. Workup included a complete ophthalmological examination, Humphrey visual field test, and RNFL thickness measurement by optical coherence tomography. The intraocular pressure (IOP) and RNFL thicknesses (global and quadrant) were averaged from both eyes and the means were correlated with: the systolic BP (SBP), diastolic BP (DBP), and mean arterial pressure (MAP) using Pearson correlation. Among 4000 screened hypertensive subjects, 133 were referred for glaucoma workup and 110 completed the workup. Of the 4000 screened subjects, 1.3% had glaucoma (0.9% had normal tension glaucoma [NTG], 0.2% had primary open angle glaucoma, and 0.2% had primary angle closure glaucoma), whereas 0.3% were NTG suspects. The SBP was negatively correlated with the mean superior RNFL thickness (P=0.01). The DBP was negatively correlated with the mean global (P=0.03), superior (P=0.02), and nasal (P=0.003) RNFL thickness. The MAP was negatively correlated with the mean global (P=0.01), superior (P=0.002), and nasal (P=0.004) RNFL thickness while positively correlated with the mean IOP (P=0.02). In medically treated hypertensive subjects, glaucoma was present in 1.3%, with NTG being most prevalent. MAP control may help with IOP lowering and RNFL preservation, although future prospective studies will be needed. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.published_or_final_versio

    Territory wide study of patients with dystrophinopathy in Hong Kong

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    Poster PresentationThis journal issues entitled: 18th International Congress of The World Muscle SocietyThis is a first territory wide study in Hong Kong on Chinese patients with dystrophinopathy on their genetic mutation, motor performance, use of steroid, and the interventions they received. This study is participated by all the paediatric departments in the eleven hospitals in Hong Kong. Clinical data was systemically collected ...postprin

    Electrocatalytic oxidation of benzyl alcohol with a monooxoruthenium(V) complex in solution and inside Nafion films

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    The monooxoruthenium(V) complex [Ruv(L)(O)]2+ (LH = bis(2-(2-pyridyl)ethyl) (2-hydroxy-2-(2-pyridyl)ethyl)amine) is an active catalyst for the electrooxidation of benzyl alcohol in solution. The second order rate constant for the reaction between [Ruv(L)(O)]2+ and benzyl alcohol evaluated by rotating disc voltammetry is 1.7 × 102mol-1 dm3s-1. The activity of the catalyst is retained when immobilized inside Nafion films. However, in aqueous acidic medium the oxidation of [RuIII(L)(H2O)]2+ to [Ruv(L)(O)]2+ is kinetically slow within Nafion. When the pH of the medium is raised from acidic to neutral, oxidation of the complex inside Nafion becomes more facile and the activity of the modified electrode towards alcohol oxidation increases. The partitioning of the catalyst in different phases of the Nafion film appears to depend on pH, with part of the immobilized complexes staying in an "electroinactive" region in neutral supporting electrolytes. The catalyst gradually becomes deactivated during the course of alcohol oxidation. © 1992.link_to_subscribed_fulltex

    Exploring the Bullwhip Effect and Inventory Stability in a Seasonal Supply Chain

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    The bullwhip effect is defined as the distortion of demand information as one moves upstream in the supply chain, causing severe inefficiencies in the whole supply chain. Although extensive research has been conducted to study the causes of the bullwhip effect and seek mitigation solutions with respect to several demand processes, less attention has been devoted to the impact of seasonal demand in multi-echelon supply chains. This paper considers a simulation approach to study the effect of demand seasonality on the bullwhip effect and inventory stability in a four-echelon supply chain that adopts a base stock ordering policy with a moving average method. The results show that high seasonality levels reduce the bullwhip effect ratio, inventory variance ratio, and average fill rate to a great extent; especially when the demand noise is low. In contrast, all the performance measures become less sensitive to the seasonality level when the noise is high. This performance indicates that using the ratios to measure seasonal supply chain dynamics is misleading, and that it is better to directly use the variance (without dividing by the demand variance) as the estimates for the bullwhip effect and inventory performance. The results also show that the supply chain performances are highly sensitive to forecasting and safety stock parameters, regardless of the seasonality level. Furthermore, the impact of information sharing quantification shows that all the performance measures are improved regardless of demand seasonality. With information sharing, the bullwhip effect and inventory variance ratios are consistent with average fill rate results

    Disregard for outsiders: A cultural comparison

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    The place of outsiders-strangers and otherwise irrelevant others-in the cultural logic of a society holds likely consequences for social perception. The authors begin by describing how outsiders are viewed in Western, Japanese, and Chinese societies. Comparing the three groups, it is proposed that the Chinese are most strongly disposed to disregard or ignore those outside their networks of affiliation and practical involvement. To test this claim experimentally, we assessed the incidental memory of Canadians, Japanese, and Chinese students for social targets of differing situational relevance to the perceiver. As expected, the Chinese showed greater memory advantage than the other groups for primary over nonprimary targets, but only when provided with an explicit justification for exclusive attention. © 2009 The Author(s).link_to_subscribed_fulltex
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