present-value effect

基本解釋

The present study was aimed at exploring the effect of integrative and instrumental motivation on second language proficiency by incorporating expectancy-value theory.
本項研究以融合期望價值理論為基礎，探索了綜合性動機和工具性動機對第二語言熟練性的影響，研究結果表明被試者工具性動機多于綜合性動機。
The electric rice cooker designed according to the calculation of the present invention has obvious energy-saving effect and has large popularization and application value.
采用本發(fā)明計算設計出的電飯鍋節(jié)能效果顯著，具有較大的推廣應用價值。
ip.com
This paper will understand the present situation and developing prospect of Traffic TV Station -a case study of Hangzhou, focusing on the analysis of audience, content, effect and industry value etc.
本文將以杭州的公交移動電視為例，從受眾分析、傳播內容分析、傳播效果分析以及產業(yè)價值分析等幾方面，對公交移動電視發(fā)展現狀及其發(fā)展前景進行解讀。