This study investigated the effects of the frequency at which English as a foreign language （EFL） students were exposed to words from the input modes of reading and listening. Accordingly, 15 words of three frequenc...This study investigated the effects of the frequency at which English as a foreign language （EFL） students were exposed to words from the input modes of reading and listening. Accordingly, 15 words of three frequency groups were selected. A total of 60 Chinese EFL students were recruited. The four test types of recall of form, recognition of form, recall of meaning, and recognition of meaning were administered to measure participants＇ ability in building a form-meaning link. Immediate posttests were administered for assessing vocabulary development, and delayed posttests were administered two weeks later for assessing retention. The results revealed that new words could be learned incidentally in both modes, but more word knowledge was gained in reading. The effect of word exposure frequency on incidental vocabulary gains was significant for the four test types in both of the two modes. Since only partial word knowledge was acquired by both modes, it appeared that for the two modes to be a valuable source for incidental vocabulary learning, not only word exposure frequency, but also elaborate woM processing is needed. Relevant implications for teaching and learning vocabulary are discussed.展开更多
This paper presents a novel readout system for wireless passive pressure sensors based on the inductively coupled inductor and cavity （LC） resonant circuits. The proposed system consists of a reader antenna inductiv...This paper presents a novel readout system for wireless passive pressure sensors based on the inductively coupled inductor and cavity （LC） resonant circuits. The proposed system consists of a reader antenna inductively coupled to the sensor circuit, a readout circuit, and a personal computer （PC） post processing unit. The readout circuit generates a voltage signal representing the sensor＇s capacitance. The frequency of the reader antenna driving signal is a constant, which is equal to the sensor＇s resonant frequency at zero pressure. Based on mechanical and electrical modeling, the pressure sensor design based on the high temperature co-fired ceramic （HTCC） technology is conducted and discussed. The functionality and accuracy of the readout system are tested with a voltage-capacitance measurement system and demonstrated in a realistic pressure measurement environment, so that the overall performance and the feasibility of the readout system are proved.展开更多
基金supported by the Fund Program of Education Sciences Planning in Hainan Province[Grant number:QJY13516003]
文摘This study investigated the effects of the frequency at which English as a foreign language （EFL） students were exposed to words from the input modes of reading and listening. Accordingly, 15 words of three frequency groups were selected. A total of 60 Chinese EFL students were recruited. The four test types of recall of form, recognition of form, recall of meaning, and recognition of meaning were administered to measure participants＇ ability in building a form-meaning link. Immediate posttests were administered for assessing vocabulary development, and delayed posttests were administered two weeks later for assessing retention. The results revealed that new words could be learned incidentally in both modes, but more word knowledge was gained in reading. The effect of word exposure frequency on incidental vocabulary gains was significant for the four test types in both of the two modes. Since only partial word knowledge was acquired by both modes, it appeared that for the two modes to be a valuable source for incidental vocabulary learning, not only word exposure frequency, but also elaborate woM processing is needed. Relevant implications for teaching and learning vocabulary are discussed.
文摘This paper presents a novel readout system for wireless passive pressure sensors based on the inductively coupled inductor and cavity （LC） resonant circuits. The proposed system consists of a reader antenna inductively coupled to the sensor circuit, a readout circuit, and a personal computer （PC） post processing unit. The readout circuit generates a voltage signal representing the sensor＇s capacitance. The frequency of the reader antenna driving signal is a constant, which is equal to the sensor＇s resonant frequency at zero pressure. Based on mechanical and electrical modeling, the pressure sensor design based on the high temperature co-fired ceramic （HTCC） technology is conducted and discussed. The functionality and accuracy of the readout system are tested with a voltage-capacitance measurement system and demonstrated in a realistic pressure measurement environment, so that the overall performance and the feasibility of the readout system are proved.
