Tatsuya Nakata
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View article: Optimizing distributed practice online
Optimizing distributed practice online Open
This study conceptually replicates Cepeda, Coburn, Rohrer, Wixted, Mozer, & Pashler’s (2009, Experiment 1) study on the effects of distributed practice on second language (L2) vocabulary learning to examine its generalizability to a new co…
View article: Efficiency trumps aptitude: Individualizing computer-assisted second language vocabulary learning
Efficiency trumps aptitude: Individualizing computer-assisted second language vocabulary learning Open
The aim of this study was to contribute to the field of computer-assisted language learning (CALL) by investigating the individualization of intentional vocabulary learning. A total of 118 Japanese-speaking university students studied 20 l…
View article: Novel Custom Loss Functions and Metrics for Reinforced Forecasting of High and Low Day-Ahead Electricity Prices Using Convolutional Neural Network–Long Short-Term Memory (CNN-LSTM) and Ensemble Learning
Novel Custom Loss Functions and Metrics for Reinforced Forecasting of High and Low Day-Ahead Electricity Prices Using Convolutional Neural Network–Long Short-Term Memory (CNN-LSTM) and Ensemble Learning Open
Day-ahead electricity price forecasting (DAEPF) is vital for participants in energy markets, particularly in regions with high integration of renewable energy sources (RESs), where price volatility poses significant challenges. The accurat…
View article: Enhanced Day-Ahead Electricity Price Forecasting Using a Convolutional Neural Network–Long Short-Term Memory Ensemble Learning Approach with Multimodal Data Integration
Enhanced Day-Ahead Electricity Price Forecasting Using a Convolutional Neural Network–Long Short-Term Memory Ensemble Learning Approach with Multimodal Data Integration Open
Day-ahead electricity price forecasting (DAEPF) holds critical significance for stakeholders in energy markets, particularly in areas with large amounts of renewable energy sources (RES) integration. In Japan, the proliferation of RES has …
View article: On effective learning of English collocations: From perspectives of distributed practice and semantic restructuring
On effective learning of English collocations: From perspectives of distributed practice and semantic restructuring Open
Knowledge of collocations facilitates second language (L2) learning by enhancing accuracy and fluency. However, acquiring L2 collocations is often challenging for learners. One factor contributing to this difficulty is incongruency between…
View article: Effects of distributed practice on the acquisition of verb-noun collocations
Effects of distributed practice on the acquisition of verb-noun collocations Open
Given the importance of collocational knowledge for second language learning, how collocation learning can be facilitated is an important question. The present study examined the effects of three different practice schedules on collocation…
View article: Vocabulary and computer technology: A commentary on four studies for JALT vocabulary SIG
Vocabulary and computer technology: A commentary on four studies for JALT vocabulary SIG Open
Four papers by Clint Denison and Imogen Custance, Louis Lafleur, James Rogers, and Andrew Obermeier will be presented at the Eighth Annual JALT Vocabulary SIG Symposium in Tokyo, Japan, on September 20, 2020. The topics covered in the four…
View article: DOMAIN-GENERAL AUDITORY PROCESSING EXPLAINS MULTIPLE DIMENSIONS OF L2 ACQUISITION IN ADULTHOOD
DOMAIN-GENERAL AUDITORY PROCESSING EXPLAINS MULTIPLE DIMENSIONS OF L2 ACQUISITION IN ADULTHOOD Open
In this study, we propose a hypothesis that domain-general auditory processing, a perceptual anchor of L1 acquisition, can serve as the foundation of successful post-pubertal L2 learning. This hypothesis was tested with 139 post-pubertal L…
View article: Examining the Validity of the LexTALE Test for Japanese College Students
Examining the Validity of the LexTALE Test for Japanese College Students Open
The question of how vocabulary knowledge of second language (L2) learners can be measured in a valid and reliable way has attracted attention from researchers.One widely used format for assessing vocabulary knowledge is a Yes/No test, wher…
View article: Effects of spacing on contextual vocabulary learning: Spacing facilitates the acquisition of explicit, but not tacit, vocabulary knowledge
Effects of spacing on contextual vocabulary learning: Spacing facilitates the acquisition of explicit, but not tacit, vocabulary knowledge Open
Studies examining decontextualized associative vocabulary learning have shown that long spacing between encounters with an item facilitates learning more than short or no spacing, a phenomenon known as distributed practice effect. However,…
View article: EFFECTS OF MASSING AND SPACING ON THE LEARNING OF SEMANTICALLY RELATED AND UNRELATED WORDS
EFFECTS OF MASSING AND SPACING ON THE LEARNING OF SEMANTICALLY RELATED AND UNRELATED WORDS Open
Although researchers argue that studying semantically related words simultaneously (semantic clustering) inhibits vocabulary acquisition, recent studies have yielded inconsistent results. This study examined the effects of semantic cluster…
View article: Characterization of polished rice washing water fermented with milk and its inhibition activity toward tomato bacterial canker causative agent Clavibacter michiganensis subsp. michiganensis
Characterization of polished rice washing water fermented with milk and its inhibition activity toward tomato bacterial canker causative agent Clavibacter michiganensis subsp. michiganensis Open
Polished rice (seihaku-mai in Japanese) washing water (RWW) exerts a heavy load on gray water treatment. Some farmers ferment RWW with milk and use it for managing healthy plant growth (Fukushima, 2010). In this study, we prepared RWW ferm…