本文利用Gonza′lez, Teräsvirta and van Dijk (2004, 2005)所發展的縱橫平滑移轉迴歸模型，以GDP成長率比率為模型中的轉換變數，觀察台灣GDP成長率對台灣電子業之資產報酬率及股價是否存在平滑移轉效果，並進一步探討後發現在不同的GDP成長區間下，解釋變數匯率、負債比率、營收成長率對電子業之資產報酬率及股價存在不同的效果，研究顯示如下在GDP成長率小於-0.1065%的情況下，公司經營層面上可以在景氣走壞的情況透過貶值、降低負債比率、增加營收成長率來提升資產報酬率在；GDP成長率大於-0.1065%的情況下公司經營層面上同樣可以透過降低負債比率、增加營收成長率來提升資產報酬率，但匯率將會失去作用。在GDP成長率小於-0.0867%的情況下發生升值、增加負債比率、降低營收成長率將會使投資人持有個股之股價攀升；在GDP成長率大於-0.0867%的情況下，發生貶值、降低負債比率、增加營收成長率將會使投資人持有個股之股價攀升。 This study adopts the empirical model of Gonza''lez, Teräsvirta and van Dijk (2004, 2005) to verify whether the panel smooth transition effect exists in the GDP variable. This research use Regression Model to analyze the nonlinear impact of GDP on return among electric industry in Taiwan. The results show that there are significant positive effect of exchange rate and sales revenues and significant negative effect of debt ratio on ROA during the lower region where GDP is less than -0.1065%. When GDP is larger than 0.1065%, there still are significant positive effect of sales revenues and significant negative effect of debt ratio on ROA during the upper region. But the exchange rate is not significant. There are significant positive effect of debt ratio and significant negative effect of exchange rate and sales revenue on stock price during the lower region where GDP is less than -0.0867%. When GDP is larger than 0.0867%, there are significant positive effect of exchange rate and sales revenues and significant negative effect of debt ratio on stock price during the upper region.
