本研究旨在探討本國銀行業之國際化策略是否會因銀行規模之大小差異而對其經營之績效產生影響，並臆測其存在非線性之影響現象。本研究以設有海外分行的14家本國銀行為實證研究對象，並擷取2006年第二季至2009年第四季之平衡式縱橫財務資料，以EPS、ROA、ROE作為銀行獲利績效之代理變數，以銀行資產規模為模型中的移轉變數，並以存放比率、活期性存款比率、逾放比率、海外分行營收比率為額外的控制變數，嘗試運用縱橫門檻平滑移轉迴歸模型(Panel Smooth Transition Regression Model)進行實證，探討本國銀行業國際化策略在規模差異下與經營績效是否存在縱橫平滑移轉效果。研究結果顯示，銀行業規模之大小差異並不會造成銀行業國際化策略對銀行經營績效之影響呈現非線性之關係，因此，本研究將資料進行複迴歸分析並檢定變數間可能產生的異質影響變化，研究結果發現：
一、以海外分行營收比為代理、變數的本國銀行業國際化程度對銀行譏笑之影響皆呈現負向影響。
二、逾放比之增加為銀行經營績效惡化的重要因素。
三、存放比及活期存款比率對銀行經營績效之影響呈現正向影響。
四、當銀行規模在1.4906兆新台幣時，銀行經營績效會發生結構性變化。然而，雖結果顯示本國銀行業之國際化策略在銀行規模大小差異下，對銀行經營績效存在平滑移轉效果，使產生區間轉換，但此結構變化並不顯著。
                             表單編號：ATRX-Q03-001-FM030-01

This paper aims to explore whether the domestic bank’s internationalization strategy has a significant impact on operation performance under the scale difference, and speculate the existence of nonlinear phenomenon.
This study investigates a total of 14 domestic banks which have established overseas branches, takes Panel Smooth Transition Regression Model by selecting relative financial variables from the second quarter of 2006 to the fourth quarter of 2009 to execute empirical test and hopes to find the smooth transition effects of internationalization on domestic banks’ operation performance under the bank scale difference. The empirical results are as follows:
I.	There is no existence of nonlinear phenomenon between the bank scale and bank's internationalization strategy impact on operation performance.
II.	The internationalization strategy will have a negative impact on operation performance. 
III.	The increasing NPL ratio is an important factor to the deterioration of operation performance.
IV.	Both loan-to-deposit ratio and demand deposit ratio have positive effects on operation performance.
V.	There exists one threshold value of NTD1.4906 trillion for bank scale indicated the existence of smooth transition effects on the bank's internationalization strategy impact on operation performance under the scale difference. However, the finding of this smooth transition effect is not significant.
                             表單編號：ATRX-Q03-001-FM031-01

目錄
第一章	緒論……………………………………………………1
第一節	研究背景與動機………………………………………1
第二節	研究目的………………………………………………3
第三節	研究架構………………………………………………3
第二章	文獻探討………………………………………………5
第一節	金融國際化的經營策略相關文獻……………………5
第二節	銀行國際化相關理論…………………………………9
第三節	國際化程度與經營績效相關文獻……………………10
第四節	銀行規模與經營績效相關文獻………………………12
第五節	銀行獲利性評估指標相關文獻………………………13
第三章	研究方法………………………………………………15
第一節	研究資料………………………………………………15
第二節	縱橫單根檢定…………………………………………16
第三節	縱橫平滑移轉迴歸模型………………………………18
第四節	縱橫平滑移轉迴歸模型之設定………………………21
第四章	實證結果與分析………………………………………27
第一節	各變數之基本敘述統計分析…………………………27
第二節	縱橫單根檢定之實證結果……………………………28
第三節	線性檢定與複迴歸分析………………………………30
第四節	縱橫平滑移轉模型之參數估計與檢定………………33
第五章	研究結論與建議………………………………………44
第一節	結論……………………………………………………44
第二節	研究建議………………………………………………45
參考文獻………………………………… ………………………47
國內文獻…………………………………… ……………………47
國外文獻…………………………………… ……………………48
表目錄
表2-5-1  衡量各獲利性指標之意涵……………………………14
表4-1-1  各變數之基本統計量…………………………………27
表4-2-1  各變數原始序列之單根檢定…………………………29
表4-3-1  銀行規模對公司經營績效之同質性檢定……………31
表4-3-2  以EPS為應變數所得的複迴歸分析結果… …………32
表4-3-3  以ROA為應變數所得的複迴歸分析結果…… ………32
表4-3-3  以ROE為應變數所得的複迴歸分析結果…… ………32
表4-4-1  銀行規模對公司經營績效之轉換區間個數檢定……34
表4-4-2  銀行規模對EPS之模型估計結果…… ………………35
表4-4-4  銀行規模對EPS模型中解釋變數之影響… …………37
表4-4-5  銀行規模對ROA之模型估計結果……………… ……38
表4-4-6  銀行規模對ROA模型中解釋變數之影響………… …40
表4-4-7  銀行規模對ROE之模型估計結果……………… ……41
表4-4-8  銀行規模對ROE模型中解釋變數之影響……… ……43
圖目錄
圖1-3-1  研究流程圖……………………………………………4
圖3-3-1  m=1之轉換模型………………………………………20
圖3-3-2  m=2之轉換模型………………………………………21
圖4-4-1  銀行規模對EPS之轉換函數…………………………36
圖4-4-2  銀行規模對ROA之轉換函數…………………………39
圖4-4-3  銀行規模對ROE之轉換函……………………………42

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