本文利用可以同時捕捉到銀行增加意欲產出、減少投入與減少非意欲產出的方向距離函數，評估台灣銀行業與個別銀行在民國93年至97年的無效率值與生產力變化。設定逾期放款為銀行生產放款時的非意欲產出，以考量銀行的放款品質，也考慮到銀行都會付出成本來提供服務給存戶，因此以交易性存款作為銀行提供服務的替代變數，使銀行的服務包含在效率評估內，並以固定的方向向量作為無效率值加總的基礎，來衡量台灣整體銀行業的無效率。實證結果是台灣銀行業的無效率值隨著雙卡風暴的遠去，有逐年遞減的趨勢，生產力的變化則是退步的情況較多。 / In this paper we estimate Taiwanese banks’ efficiency and productivity change during 2004-2008. The estimates are derived from the directional distance function. We treat non-performing loans as an undesirable output arising from the production of loans to measure the quality of loans. Considering every bank would make costs to serve customers, we choose transaction deposits as an alternative variable to capture the service provided by banks. The way we set the directional vector allows the aggregation of individual bank inefficiency and productivity change to the industry level. Our findings indicate that inefficiencies of Taiwanese banking industry were decreasing after the over of credit and cash card debts. And Taiwanese banking industry experienced productivity regress during this period.

本文主要研究日本央行實施緊縮性貨幣政策時，日本銀行業貸款組合變動與對實質經濟影響之關係，透過比較貨幣性衝擊、單純產出衰退及總和需求衰退對於銀行貸款組合的影響，以分析銀行在貨幣政策所發揮的功能。經VAR模型實證結果顯示，日本國內貨幣緊縮會使短期實質產出衰退、價格上升；銀行對於家計部門消費信用以及購屋貸款的放款減少、對企業的放款則增加。進一步檢驗不同規模企業貸款發現，銀行對大型企業的放款較為寬鬆，而對於中小企業的放款增幅較不明顯。另一方面，考慮信用標準擴散指數的VAR模型分析發現，日本國內的貨幣緊縮政策使銀行對於家計單位信用標準趨於嚴格的程度最大，再來依序為中型企業、小型企業及大型企業。這些實證結果支持銀行信用管道的存在，也說明銀行在貨幣傳遞機制中扮演重要的角色。 / The paper mainly studies the relationship between the change of Japanese bank loan portfolios and its substantial effect on economy during implementation of monetary tightening policy by Japan authority. Through comparison of monetary impacts, as well as the effects of the downturns in both output and real demand on bank loan portfolios, with the downturns are generated in a way that they produce the same dynamic real output and final demand path as that from a monetary downturn. The empirical results of VAR model reveal that the domestic monetary tightening in Japan would cause decrease in short-term real output and price level rise. General banks offer less consumption credits and house loans for households, but turn to increase loans for enterprises. When further examining the loans for enterprises of different scales, the paper finds that the banks take a looser attitude in offering loans to large-scale enterprises than to small and medium enterprises (SMEs), whose loans seem to have insignificant increase. On the other hand, after analysis of VAR model that considers the credit standard diffusion index, it is found that because of the domestic monetary tightening policy of Japan, the banks’ practices in their offer of credits appear to be strictest to households, and then less strict to SMEs and large enterprises. These facts prove the existence of credit channels of banks, and show the important roles that banks take in monetary transmission mechanism.

在政府提倡金融自由化、國際化的引導下，台灣金融管制解放，金融機構擺脫過去寡占經營的局面紛紛林立，為了因應市場競爭，各種金融產品不斷推陳出新，放款限制亦不斷寬鬆，造成市場一片蓬勃。然而從1997年金融危機的發生，導致企業跳票的個案中，使我們注意到企業在自由化時期藉籌措資金之便，大行金錢投機遊戲，以股票質押再行借款投資。此種高度的財務槓桿操作，一旦面臨危機衝擊，抵押品價值下滑，勢必發生連鎖反應而危及營運。 本研究從市場資訊不對稱觀點說明，公司抵押品價值（淨值）下滑，對借款者的債務保障價值減少，加速資訊不對稱之二大問題───道德危機和逆選擇，促使經濟雪上加霜，引發全面性危機。本研究的實證結果如下： 1.台灣自1990年代後，紛紛以股票質押借款，放款隨股價變動而有循環性調整，銀行抵押放款捲入股價波動，脆弱的金融體系一旦因應景氣情勢緊縮信用，對經濟產生進一步抵押品效果。 2.由此次台灣企業財務危機教訓可知，出問題的多為股票質押，不動產質押因應危機的反映較低且台灣不動產不景氣已多年，銀行資本已消化部分壞帳。實證結果亦顯示股票質押相對不動產更有助長經濟向下沉淪的力量。 3.各國經濟結構有別，對抵押品寄予不同程度擔保。所得低的國家，債信程度亦低，金融機構愈仰賴抵押品進行貸款評估，但其效果並不顯著，表示所得並不是唯一考量債信的因素之一。儲蓄對利率的敏感度也是各國因應危機受創不一的因素，當政府為了捍衛匯率，提高利率的結果,無可避免的重創經濟體系，而逃離的資金對利率敏感度低下，卻不易回流至金融體系，整體而言，勢必對一國景氣恢愎速度造成阻力。 4.放款對股價彈性大小變動的幅度和綜合危機判斷指數成負相關。代表愈仰賴抵押品作為貸款條件的國家在面臨危機發生時，會因抵押品效果使經濟更加惡化。

台灣利率自由化的演進過程，是採取循序漸進的方式，先由貨幣市場實施，再逐步推及到存放款市場。自1989年利率自由化及1991年政府開放新商業銀行設立以來，台灣銀行業的競爭就進入了白熱化的春秋戰國時代，金融版圖重新調整，產業的競爭有增無減。這期間經過兩次的金融改革，體質較弱的銀行紛紛走向讓售及被併購的命運，尤其是2008年發生金融海嘯，對銀行業的經營更是一大挑戰。觀察近年來銀行業的經營困境，存放款利差持續走低，多數銀行採取價格競爭策略，企業授信市場採用低利削價的手段，造成銀行業獲利率降低，危及銀行健全經營體質。所以本研究從文獻回顧探討影響放款利率定價決定因素，從樣本銀行實務授信政策及放款定價辦法探討影響放款利率定價決定因素，並利用樣本資料從實證模型的估計及檢驗來推估假設變數與企業貸款利率定價之間的具體關係及影響方向與程度，最後將實證結果提供予銀行管理當局擬定授信政策及建立完善放款利率定價模型之參考。 / From money market to deposit and loan markets, the development of interest rate liberalization in Taiwan has been in gradual progress. Since interest-rate liberalization in the year of 1989 and governmental approval on the establishment of new commercial banks in 1991, the competition among banks in Taiwan has become severe. Market shares among banks have thus changed. During the period, the financial market experienced two banking reforms. Banks with relatively weak financial nature have been forced to be sold or merged. Moreover, the financial turmoil in the year of 2008 made the business environment of banking industry even more challengeable. Running business in banking has been more difficult in recent years. Interest rate spread for banks has been narrowing. Most banks have adopted price competition strategies. Such price-cutting policy in commercial loan market has resulted in the deterioration of bank management in the industry. This research reviews study-papers focusing on the factors affecting commercial loan interest rate pricing, using bank A as a sample to review its actual operation of credit policy and loan pricing means. In addition, by adopting technique of empirical model measurement and statistical test on the sample data, the concrete correlation and extent of influence between hypothetical variables and pricing on commercial loan interest rate are also estimated. The aim of this paper is to provide empirical tested results to the banking authorities for their reference when designing fine credit policies and commercial loan pricing model.

自2003年臺灣發行第一件資產證券化商品以來，整體證券化市場發展快速，在可預見的未來，臺灣資產證券化將迅速普及。不過，就一般而言，間接金融與直接金融間似有替代關係，亦即資產證券化可能產生金融逆中介現象。因此，本文的研究目的即在於探討資產證券化對臺灣銀行業放款之影響為何。 　　本文以2001年第4季至2004年第4季臺灣銀行業將其資產予以證券化的不平衡追蹤資料，搭配固定效果模型的估計，實證研究發現，從臺灣短暫的資產證券化經驗來看，資產證券化的增加確實會造成銀行放款量的相對減少（放款餘額占資產之比率下降），即臺灣實施資產證券化後，產生金融逆中介現象。長期而言，直接金融（含資產證券化）的增加將造成銀行放款成長率趨緩，以及銀行放款餘額占資產之比率下降，但此並不意味資產證券化的普及，將造成銀行總放款量減少，而降低銀行體系金融中介的功能。 　　另外，透過固定效果模型，發現其他因素對銀行放款之影響如下：（1）銀行逾期放款比率雖與放款呈負向關係，但並不顯著。意即銀行在逾期放款比率增減時，並不會特別調整放款餘額占資產之比率。（2）銀行淨值與放款之關係亦不顯著。表示銀行淨值增加時，放款可能只會與其他資產同步增加，而不會因此特別擴大其占資產之比率。（3）房價指數的係數為顯著正值。顯示擔保品價值愈高時，銀行愈願意辦理放款。（4）其他直接金融存量（扣除資產證券化）的係數為顯著負值。顯示直接金融與間接金融存在明顯替代關係。（5）國內生產毛額與銀行放款之關係不顯著。表示國內生產毛額增加時，銀行放款可能只會與銀行其他資產同步增加，而不會因此特別擴大其占資產之比率。 　　在控制其他解釋變數後，計算各樣本銀行的特質效果（即放款餘額占資產之比率），發現除了放款餘額占資產之比率較高者，逐漸降低該比率外，其餘銀行並無特定趨勢。因此，似可推論出銀行放款餘額占資產比率的高低，與銀行本身之經營策略有關，致使該比率在不同銀行間有不同水準。 / The entire securitization market has been evolving rapidly since the first asset securitization product was issued in Taiwan in 2003. In the foreseeable future, asset securitization in Taiwan will become prevalent. However, there seems to be a substitution relationship between direct finance and indirect finance; that is, financial disintermediation may emerge as a result of asset securitization. Therefore, this paper aims to discuss the effects of asset securitization on bank loans in Taiwan. Based on the unbalanced panel data of the asset securitization of banks in Taiwan from Q4 2001 to Q4 2004 along with the estimates from the fixed-effects model, it is found in this study that, judging from Taiwan’s brief experience in asset securitization, an increase in asset securitization does indeed bring about a relative decline in the amount of loans (a decreased ratio of loan balance in assets). In other words, financial disintermediation has arisen with asset securitization in Taiwan. From a long-term perspective, increment of direct finance (including asset securitization) will lead to retarded growth in bank loans as well as a lower ratio of loan balance in assets. This, however, may not necessarily imply that the popularization of asset securitization would result in a decrease in the amount of bank loans or weaken the financial intermediation function of the banking system. In addition, effects of other factors on bank loans found via the fixed-effect model are as follows: (1) Non-performing loan (NPL) ratio and bank loans have an inverse relationship, albeit insignificant. This means that banks do not usually adjust the ratio of loan balance in assets in accordance with their NPL ratios. (2) The relationship between the net worth of banks and the amount of loans is insignificant as well. This indicates that the amount of loans would only rise with other assets as the net worth of banks increases; the ratio of loan balance in assets will not be specifically elevated. (3) The coefficient of Housing Price Index is significantly positive, indicating that the higher value a collateral has, the more a bank is willing to release a loan. (4) The coefficient of other stock of the direct finance (excluding asset securitization) is significantly negative, which reveals an obvious substitution relationship between direct finance and indirect finance. (5) The relationship between gross domestic product (GDP) and bank loans is insignificant, which indicates that the amount of bank loans would only rise with other bank assets as GDP increases; the ratio of loan balance in assets will not be elevated accordingly. As other explanatory variables are under control, the results gained from computing the specific effects (the ratio of loan balance in assets) of each sample (bank) show that only those with a higher ratio of loan balance in assets are found gradually reducing the radio. Such a trend is not found in others. Consequently, it can be inferred that the ratio of loan balance in assets depends on the business strategy of the bank itself, which results in different levels of the ratios among different banks.

本文以1999年第4季至2011年第3季24家銀行的追蹤資料，分析銀行資本與金融控股體系對銀行放款管道的影響。全體樣本銀行的實證結果顯示，沒有顯著證據支持放款管道的存在。銀行淨值及調整成本對放款有顯著的影響，支持銀行資本管道存在。另外，銀行加入金融控股體系之後，調整成本的影響增加。 大型銀行樣本的實證結果顯示，大型銀行放款管道的作用不顯著；但是，銀行資本管道呈現顯著影響。小型銀行放款管道及資本管道皆沒有顯著證據支持兩者存在，但非存款負債對小型銀行放款的影響顯著。除此之外，小型銀行在金融控股體系下，短期投資及非存款負債對放款的影響顯著。由此結果可知，大小型銀行皆可藉由資產負債的調整來抵銷貨幣政策的衝擊，維持放款的成長。

【第一篇論文中文摘要】 集中度風險於結構式商品的量化與分析：以房屋抵押貸款證券為例 "Martin and Wilde (2002)與Gordy (2003)" 針對巴塞爾協定(Basel Accords)中金融機構之投資組合所內藴之集中度風險提出了相對應的微粒化調整(Granularity Adjustment)風險量化準則，然而該模型僅止於單因子架構下探究單一信用標的集中度風險之量化。本文將其架構延用至結構式商品中，允許債權群組內之信用標的具不同區域別，我們採用Hull and White(2010)之跨池違約相關性描述，並結合Pykhtin (2004)中延拓單因子聯繫模型至多因子之方式，進而求取債權群組之單一資產集中度(Name Concentration)與區域類別集中度(Sector Concentration)風險的量化。本文以房屋抵押貸款證券(Mortgage Backed Securities, MBSs)為例，於集中度風險的考量下，藉由檢視不同風險情境下分券之損失起賠點，重新評估房屋抵押貸款證券AAA投資級分券信用評級之合理性。研究結果顯示，AAA評等之分券高度曝險於系統性風險，且於高風險情境下，標的房貸之區域集中現象擴大了違約相關性對債權群組損失分配的影響，致使AAA分券之損失起賠點得以超過其實際擔保額度(subordination)範圍。 【第二篇論文中文摘要】 美國銀行放款多角化對其報酬與風險之影響：相關性與傳染的觀點 本文目的在於分析銀行放款的多角化行為對其報酬與風險之影響。研究發現納入銀行放款投資組合相關性之考量，亦即標的資產之相關性結構以及資產間因契約關係所隱含跨投資組合之傳染途徑，將降低多角化之成效。文中透過因子模型(factor model)建構資產之報酬，同時決定其相關性結構，其中將資產間殘差項相關性作為傳染指標，進一步分析投資組合內標的資產間的平均相關係數、傳染與多角化程度間的關聯性。我們以美國銀行作為研究樣本，分別以赫芬達-赫希曼指數估算投資組合權重分配之集中度、使用組合內標的產業股票報酬資訊來計算投資組合內相關程度，接著利用標的產業與投資組合外產業間的殘差相關性來捕捉產業傳染效果，將此三項指標作為衡量多角化指標，分析其在1987年至2014年間聯貸投資組合多角化情形並試圖分析放款多角化對銀行績效之影響。透過契約關係的界定進而探討顧客傳染如何影響銀行績效。 研究發現於市場處於平穩期間(tranquil period)，所有多角化指標銀行放款均呈現放款多角化程度越高越有助於提高銀行的報酬並降低其風險。然而於危機期間(turmoil period)，銀行應將放款權重集中於部分產業、建構相關性較低之組合或選擇較低之傳染效果之產業作為放款的對象，用以提高銀行績效。隱含在危機期間銀行應該選擇適度之多角化策略，若僅以赫芬達-赫希曼指數作為多角化之衡量將顯示危機期間越集中越有助於銀行的表現，此舉將造成解釋上的偏誤。說明於投資組合多角化的衡量上，不該忽略由相關性結構所引發之集中度風險。 / 【Essay I】 Quantification and Analysis of Concentration Risk in Structured Products: the Case of Mortgage Backed Securities Granularity adjustments, introduced by Martin and While (2002) and Gordy (2003), allow one to quantify the concentration exposures of credit portfolios due to imperfect diversification. However, they focus solely on name concentrations under an Asymptotic Single Risk Factor (ASRF) framework. In this study, by adapting the multi-pool correlation structure of Hull and White (2010) under the multi-factor setting of Pykhtin (2004), we derive quantitative measures of name and sector concentration that facilitate subsequent analysis of the risk profiles embedded in Mortgage Backed Securities (MBSs). Under different stress scenarios, we examine the impacts of concentration exposures on the internal credit enhancements, in particular, the AAA tranche attachment points. We show that, under severe market conditions, the presence of sector concentrations in the underlying mortgage pools can further amplify the effects of default correlation on the portfolio loss distributions. As a direct consequence, the predetermined subordination level determined by the assignment of tranche attachment points can be exceeded. 【Essay II】 How Loan Portfolio Diversification Affects U.S. Banks’ Return and Risk: Correlation and Contagion Perspectives. In this paper we investigate how loan portfolio diversification affects the banks’ return and risk. We argue that, the dependence structure of bank loan portfolios, namely, the correlation structure among loan assets and the presence of contagion channels due to contractual relationships across the border of portfolio, contributes to the costs of diversification. Under the factor model framework, we derive a theoretical model to depict the asset returns and their dependence structure. Based on data of US bank loans collected from 1987-2014, our empirical study employs HHI, intra-portfolio correlation, and contagion as proxies for diversification to examine how loan portfolio diversification affects the banks’ profitability and riskiness. In addition, contractual relationships are identified and we investigate how customer contagion affects the bank’s performance. We find that all diversification measures exhibit a positive effect on the performance of U.S. banks during tranquil periods. However, for turmoil periods, banks with loan portfolios of more concentrated weight distributions, lower intra-portfolio correlation, or lower consumer contagion effects would have improved returns and reduced risk. In other words, during crisis, banks should choose an appropriate concentration strategy rather than focus on selected industries as determined solely by the HHI.

近十年來，台灣出現薪資成長停滯的現象，實質薪資更是停留在十年前的水準，究竟是什麼原因使得台灣薪資無法向上提升，是本研究所要討論的重點。 本文利用台灣1980年1月到2011年12月共384筆月資料，以普通最小平方法(Ordinary Least Square, OLS)進行迴歸估計，找出顯著影響台灣薪資成長的因素，實證結果發現消費者物價、名目放款利率、失業率、就業人數、人力派遣業員工人數、平均勞工保險投保薪資站平均經常性薪資比重、基本工資、非經常性薪資以及對外投資金額對於台灣的薪資有顯著的影響。本文並根據過去的數據資料，發現進十年來因為物價上漲吃掉名目薪資上漲的幅度，使得實質薪資倒退到十年前的水準；另一方面，由於失業率對於薪資是顯著負向的影響，而自1997亞洲金融風暴開始，台灣失業率節節攀升，因此近十年來相對較高的失業率是使得薪資無法成長的重要原因。本研究結果也發現，雇主對於勞工保險的沉重負擔、實質基本工資停滯並未給予勞工實質的保障，以及名目放款利率大幅下跌、非經常性薪資及對外投資金額快速增加、人力派遣業快速成長等因素，亦是使得台灣近十年來薪資都不漲的原因。 除了針對全國的薪資影響因素做討論之外，本文也針對工業部門、製造業、服務業部門以及金融保險業的薪資影響因素進行實證分析。實證結果發現，消費者物價指數、失業率、平均勞工保險投保薪資佔平均經常性薪資比重等變數對於工業部門、製造業、服務業部門以及金融保險業的薪資都有顯著影響。

中國大陸自西元1979年開始實行經濟改革政策，銀行體系同時經歷了三十年的改革發展，依據中國加入世界貿易組織之承諾，其必須於2006年12月11日全面開放外資銀行登陸投資。為了面對外資銀行業可能帶來的激烈競爭與挑戰，中國政府大力支持與協助國有商業銀行進行一連串的體制改造及上市計畫，近年來中國銀行業整體的表現十分亮眼。 兩岸政府於2010年6月29日簽署之兩岸經濟合作架構協議(ECFA)，正式地為台灣的銀行業開啟通往大陸投資的一扇門，此篇論文藉由全面的研究分析中國銀行業的發展，並透過比較中國、美國及台灣具代表性的銀行在獲利能力、資產品質、流動性風險管理及新巴賽爾資本協議規定指標遵循情形等四個面向的表現，以期提供有意赴中國大陸投資之銀行業者對於當地情況有更多的概念與了解。 / After thirty years of economic and financial reforms, banking system in China has transformed from rigidly controlled to marketization nowadays with a variety of banking institutions coexist in the financial market. Among different kinds of banking institutions, large state-owned commercial banks dominate over half of total banking assets, their huge scale allow themselves to have leading positions and monopoly power in China’s banking industry. Under WTO regulations China must fully open markets for foreign banks’ investment started on December 11, 2006, before that most large state-owned commercial banks have restructured into joint-stock companies and went public sequentially in order to enhance competition for fierce challenges brought from foreign banks. Attributing to China government’s effort and support, the overall domestic banking performance has made a lot of progress in the past few years. By comparing banking performance with USA and Taiwan in four aspects of profitability, assets quality, liquidity risk management and capital adequacy ability, the study results demonstrate that general performance of banking sector and large state-owned commercial banks in China have improved greatly and even better than advanced countries in some respects. The signing of ECFA between cross-strait governments on June 29, 2010 starts a new page of Taiwan banks’ development in China, the study suggests that in the initial stage banks from Taiwan can explore markets of corporate banking by using their expertise in loans for small and medium enterprises which are always neglected by banks in China, and by providing services to Taiwan business people in China to explore markets of consumer banking, and then gradually expand market share.

我國考察先進國家之金融體系架構，發現外國非銀行業務（Non－bank business）已行之有年、蓬勃發展。是以開放融資公司設立，為民國八十四年亞太營運中心計畫（金融中心部分）執行事項之一，嗣於八十七年因受亞洲金融風暴之影響而暫緩辦理。九十一年間考量國內外經濟環境之變化，為使企業與個人融資管道多元化，並發展國內非銀行業務等因素，爰再研究開放融資公司設立相關事宜。經建會乃透過二階段之委託研究，邀請專家、業者，與經濟部、財政部等相關機關研擬後，於九十三年五月間完成「融資公司法」草案之確定版本，六月十四日經行政院經建會第1178次委員會議討論通過，八月十九日於行政院院會完成初審，而九十四年三月三十一日經濟部修正後再送行政院，俟行政院最後審議。 融資公司法制對法律人而言，係一全新之領域，本文乃係探討融資公司法制之理論體系，釐清相關規範之基本內涵與概念，以提供後續學理討論及與本議題相關之專業人士參考。又他山之石，可以攻錯，故本文整理分析外國立法例，尤其是日本法，以做為我國融資公司法草案之借鏡，俾利提出最適於我國情狀以及需求的法解釋論與立法論，亦可成為訂立相關法規及面對實務問題之酌參。在比較法例上觀察鄰近我國的日本，因其「非銀行（Non-bank）業」（稱「貸金業」）發展歷史已有相當時日，故對之制訂有所謂的「貸金三法」。該等法律因應著日本貸金業制度陸續產生的社會、法律問題，屢屢增加規範密度，此應可對我國尚在法制化過程的融資公司法草案帶來許多啟發。至於我國融資公司法草案興利防弊之立法芻議，本文將由淺而深的參酌日本法與我國相關財經法律以對照表形式廣為比較說明。並就融資公司制度實務，不僅針對融資公司法架構下之融資業務，甚至是雖非受融資公司法草案規範，惟咸信為將來主要業務者之經營型態及法律關係做研究分析，藉以理出一套最適於我國國情之融資公司法制。最後點出將來制度調整之方向及展望。 綜觀民國八十四年討論融資公司相關議題至今業已十個年頭的法制化過程，隨時空環境之轉換下，融資公司法草案內容迭有變遷。惟檢視目前經濟部融資公司法草案，似仍有未臻完善、尚須補足之處。諸如融資公司法草案第三、第十二條「融資性交易」之定義是否妥適？相關配套措施能否與實務運作情形配合？現行實際經營融資業務之公司改制為融資公司誘因為何？主管機關依融資公司法草案所採之管理模式是否適宜？對金融秩序之建構又有無正面之效應？凡此種種，除於經濟層次上有其重要性外，法律層面上之探究即為本文觀察建議重點所在。