Maternal Support of Children's Early Numerical Concept Learning Predicts Preschool and First‐Grade Math Achievement          下载免费PDF全文

Beth M. Casey  Caitlin M. Lombardi  Dana Thomson  Hoa Nha Nguyen  Melissa Paz  Cote A. Theriault  Eric Dearing 《Child development》2018,89(1):156-173

The primary goal in this study was to examine maternal support of numerical concepts at 36 months as predictors of math achievement at 4½ and 6‐7 years. Observational measures of mother–child interactions (n = 140) were used to examine type of support for numerical concepts. Maternal support that involved labeling the quantities of sets of objects was predictive of later child math achievement. This association was significant for preschool (d = .45) and first‐grade math (d = .49), controlling for other forms of numerical support (identifying numerals, one‐to‐one counting) as well as potential confounding factors. The importance of maternal support of labeling set sizes at 36 months is discussed as a precursor to children's eventual understanding of the cardinal principle.  相似文献   

Preparing Vietnamese student teachers for teaching with a student-centered approach     

Thuy Nguyen Thanh  Rijkje Dekker  Martin J. Goedhart 《Journal of Mathematics Teacher Education》2008,11(1):61-81

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EPSS needs assessment oops,i forgot how to do that     

Frank Nguyen 《Performance Improvement》2005,44(9):33-39

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LO + EPSS = just‐in‐time reuse of content to support employee performance     

Frank Nguyen  Matthew Hanzel 《Performance Improvement》2007,46(6):8-14

Those involved in training know that creating instructional materials can become a tedious, repetitive process. They also know that business conditions often require training interventions to be delivered in ways that are not ideally structured or timed. This article examines the notion that learning objects can be reused and adapted for performance support systems. By doing so, a performance technologist can develop content for just‐in‐case training and reuse it for just‐in‐time performance support.  相似文献   

Microfluidic on-chip fluorescence-activated interface control system     

Haiwang L  Nguyen NT  Wong TN  Ng SL 《Biomicrofluidics》2010,4(4):44109

A microfluidic dynamic fluorescence-activated interface control system was developed for lab-on-a-chip applications. The system consists of a straight rectangular microchannel, a fluorescence excitation source, a detection sensor, a signal conversion circuit, and a high-voltage feedback system. Aqueous NaCl as conducting fluid and aqueous glycerol as nonconducting fluid were introduced to flow side by side into the straight rectangular microchannel. Fluorescent dye was added to the aqueous NaCl to work as a signal representing the interface position. Automatic control of the liquid interface was achieved by controlling the electroosmotic effect that exists only in the conducting fluid using a high-voltage feedback system. A LABVIEW program was developed to control the output of high-voltage power supply according the actual interface position, and then the interface position is modified as the output of high-voltage power supply. At last, the interface can be moved to the desired position automatically using this feedback system. The results show that the system presented in this paper can control an arbitrary interface location in real time. The effects of viscosity ratio, flow rates, and polarity of electric field were discussed. This technique can be extended to switch the sample flow and droplets automatically.  相似文献   

A practitioner's guide for designing performance support systems     

Frank Nguyen  Craig A. Woll 《Performance Improvement》2006,45(9):37-45

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What you already know does matter: Expertise and electronic performance support systems     

Frank Nguyen 《Performance Improvement》2006,45(4):9-12

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Mobile teachers,teacher identity and international schooling     

Thuong Nguyen 《师资教育杂志》2017,43(5):635-637

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Multilingual opinion mining on YouTube – A convolutional N-gram BiLSTM word embedding     

Huy Tien Nguyen  Minh Le Nguyen 《Information processing & management》2018,54(3):451-462

Opinion mining in a multilingual and multi-domain environment as YouTube requires models to be robust across domains as well as languages, and not to rely on linguistic resources (e.g. syntactic parsers, POS-taggers, pre-defined dictionaries) which are not always available in many languages. In this work, we i) proposed a convolutional N-gram BiLSTM (CoNBiLSTM) word embedding which represents a word with semantic and contextual information in short and long distance periods; ii) applied CoNBiLSTM word embedding for predicting the type of a comment, its polarity sentiment (positive, neutral or negative) and whether the sentiment is directed toward the product or video; iii) evaluated the efficiency of our model on the SenTube dataset, which contains comments from two domains (i.e. automobile, tablet) and two languages (i.e. English, Italian). According to the experimental results, CoNBiLSTM generally outperforms the approach using SVM with shallow syntactic structures (STRUCT) – the current state-of-the-art sentiment analysis on the SenTube dataset. In addition, our model achieves more robustness across domains than the STRUCT (e.g. 7.47% of the difference in performance between the two domains for our model vs. 18.8% for the STRUCT)  相似文献   

A Comparative Study of Electronic Performance Support Systems     

Frank Nguyen  James D. Klein  Howard Sullivan 《Performance Improvement Quarterly》2005,18(4):71-86

ABSTRACT Electronic performance support systems (EPSS) deliver relevant support information to users while they are performing tasks. The present study examined the effect of different types of EPSS on user performance, attitudes, system use and time on task. Employees at a manufacturing company were asked to complete a procedural software task and received support from either an intrinsic, extrinsic, external performance support system or no system at all. Results revealed significant differences on performance, attitudes and use between several treatment groups. The study suggests that providing any kind of EPSS to support task performance is better than having none at all. In addition, designers can improve user performance, attitudes and use by creating systems that integrate with the primary work interface.  相似文献