Browsing by Author "Huang, Yuan-Chieh"

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    D2D通訊用於蜂巢式網路之位置推薦演算法
    (2015) 黃元杰; Huang, Yuan-Chieh
    設備與設備(Device-to-Device, D2D)之通訊將是長期演進技術(Long Term Evolution, LTE)網路中的重要通訊之一，D2D通訊可應用於蜂巢式網路並且重複使用基地台的資源可提高整體系統容量以及資源利用率(Resource Utilization)，其中D2D用戶允入數量以及資源分配機制是重要的關鍵因素。本研究首先根據D2D用戶允入數量以及資源分配機制之條件下尋找出系統容量的最佳值，並且提出D2D位置推薦演算法(Location Recommendation, LR)來改善系統容量。根據結果顯示，D2D用戶透過演算法的移動後可有效地提升整體系統容量以及資源利用提升率。
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    Left centro-parieto-temporal response to tool–gesture incongruity: an ERP study
    (2018-03-13) Chang, Yi-Tzu; Chen, Hsiang-Yu; Huang, Yuan-Chieh; Shih, Wan-Yu; Chan, Hsiao-Lung; Wu, Ping-Yi; Meng, Ling-Fu; Chen, Chen-Chi; Wang, Ching-I
    Abstract Background Action semantics have been investigated in relation to context violation but remain less examined in relation to the meaning of gestures. In the present study, we examined tool–gesture incongruity by event-related potentials (ERPs) and hypothesized that the component N400, a neural index which has been widely used in both linguistic and action semantic congruence, is significant for conditions of incongruence. Methods Twenty participants performed a tool–gesture judgment task, in which they were asked to judge whether the tool–gesture pairs were correct or incorrect, for the purpose of conveying functional expression of the tools. Online electroencephalograms and behavioral performances (the accuracy rate and reaction time) were recorded. Results The ERP analysis showed a left centro-parieto-temporal N300 effect (220–360 ms) for the correct condition. However, the expected N400 (400–550 ms) could not be differentiated between correct/incorrect conditions. After 700 ms, a prominent late negative complex for the correct condition was also found in the left centro-parieto-temporal area. Conclusions The neurophysiological findings indicated that the left centro-parieto-temporal area is the predominant region contributing to neural processing for tool–gesture incongruity in right-handers. The temporal dynamics of tool–gesture incongruity are: (1) firstly enhanced for recognizable tool–gesture using patterns, (2) and require a secondary reanalysis for further examination of the highly complicated visual structures of gestures and tools. The evidence from the tool–gesture incongruity indicated altered brain activities attributable to the N400 in relation to lexical and action semantics. The online interaction between gesture and tool processing provided minimal context violation or anticipation effect, which may explain the missing N400.