自1998年台灣期貨交易所推出第一檔期貨商品以來，期貨市場總成交量與交易之期貨種類均大幅成長，但期貨商家數卻不增反減，可見期貨交易量雖有逐年提昇的趨勢，但由於競爭激烈，造成部分規模不足或經營無效率的廠商，產生合併或退出市場的情況。期貨商面臨日漸蓬勃但同時競爭激烈的期貨市場，其經營效率如何，又有哪些因子會影響期貨商經營效率，是本文所關注的課題。本文以Battese & Coelli (1995)隨機性邊界混合無效率效果模型為基礎，建立超越對數型態的隨機成本邊界模型，根據台灣22家專營期貨商之橫斷面與時間序列混合資料，推估2002至2004年各專營期貨商之成本無效率值，並根據無效率效果模型，進一步探討營業據點數、網路下單比率、業務風險程度、業務集中度、廣告密集度及是否從事自營與顧問業務等廠商行為對成本無效率值之影響。結果發現，台灣專營期貨商之成本效率逐年提昇，但大部分的期貨商在資源運用上仍存有相當大的改善空間。營業據點數、網路下單比率、業務風險及廣告密集度對成本效率有正面影響；業務多樣化也有助於降低成本無效率；未從事自營業務之期貨商的成本效率較有從事自營業務者高；經營顧問業務與成本無效率呈負向關係，但不具有統計上的顯著性。

一般認為稽徵成本之高低，不必然反映稅務行政的良窳；但透過歷史資料及長期趨勢的稽徵成本分析與檢討，若能降低稽徵成本，不僅增加國庫淨收入，且可以督促稽徵行政效率的提高，對於維護稅制的公平與合理亦有所助益。本文根據稽徵成本理論及我國內地稅14種稅目20年間的整合資料，進行稽徵成本效率的指標衡量。且蒐集國際間租稅稽徵成本的資料，與我國現況進行比較，並進一步探討影響我國租稅稽徵成本之成因，得到下列發現：（一）國稅與地方稅稽徵效率之更迭，主要係受到稅務行政組織變革的影響。（二）從稅務人員總數與全國人口數和勞動力比值顯示，我國比OECD國家高出甚多，隱含著我國稅務人力顯有不足。（三）國稅的稽徵成本遠較地方稅節省，而貨物稅為最節省的稅目，遺產贈與稅及娛樂稅分屬國稅及地方稅最昂貴的稅目；另台北市國稅局及北區國稅局為稽徵成本節省的機關，而南區國稅局則為稽徵成本昂貴的機關。（四）將稅收實徵淨額取自然對數和稽徵成本率進行迴歸測定，稅收規模與稽徵成本率呈顯著的負相關，顯示稅源較豐之轄區，稅收多，其稽徵成本率自較低，反之，稅源較匱乏之轄區，其稽徵成本率相對較高。（五）我國賦稅的稽徵經費與賦稅收入之趨勢，符合稽徵經費與賦稅收入的數學理論模型，稅源充足，增加一定稽徵經費時，賦稅收入增長較快，稅源較少，即使增加稽徵經費時，賦稅收入增長也較慢。（六）從人事費占總稽徵經費的比例分析，發現我國賦稅的課徵，最重要的是稅務稽徵人力，且我國用人費低於新加坡及香港，我國稅務人員待遇明顯偏低。 / Enhancing cost efficiency in an increasingly globalized world plays an important role to the cut of tax costs that must be taken into account in tax administration costs and compliance costs, resulting in the efficiency improvement of tax-collection either by maximizing the revenue or by minimizing the tax cost. Tax collection cost, taxpaying cost and excess burden of economy are to be considered in tax costs. The basic theoretical analysis on tax costs research of tax administration costs in Taiwan’s reality have been studied and examined in the this study with the add of the tax cost theory and the investigations of the factors affecting these costs. This work is composed of five parts. There are the research contents and framework of this study, the theoretical definition and classification of tax costs, an illustration of the tax administration costs and compliance costs on the Taiwan’s current tax operating costs compared to the tax administration in OECD member countries, the analysis of the situation and possible affecting factors of government tax collection costs, and making some discussions and conclusions as well as drawing the policy suggestions for Taiwan government regarding tax collection costs, respectively.

一、出事銀行的流動性創造 流動性創造是銀行的主要功能之一，但從傳統的存放款到近年來蓬勃發展的表外交易，銀行長期頻繁地使用以短支長的工具，流動性創造最後竟成了次貸危機銀行受傷的一個關鍵原因。本文以次貸危機期間美國和歐盟共18個國家的商業銀行為研究對象，檢視其流動性創造的效果，並將出事銀行區分為擠兌銀行、紓困銀行和倒閉銀行，呈現流動性創造帶來的不同衝擊。此外，本文還進一步地分析銀行盈餘結構轉變造成的影響，觀察是否會增加或抑制原先流動性創造的效果。 實證結果顯示，高度的流動性創造會增加銀行出事的可能性，且收入多角化程度的提高，會更增加流動性創造帶來的負面效果。而以市場為基礎的國家，因為銀行活動和市場相關性高，能夠創造出較多的流動性，但銀行出事時，也容易選擇紓困銀行而不讓其倒閉，避免對整體金融環境造成太大的負外部性。最後，限制銀行從事證券活動，則有助於銀行免於紓困。 二、成本管理的銀行效率 本文是第一篇結合成本管理和銀行效率的研究。在盈餘管理的文獻中，呆帳費用 (Provision for Loan Loss, PLL) 被認為是銀行最常用來操弄盈餘的科目。因為它是銀行最大的應計項目，經理人往往利用將其提前或遞延認列來進行盈餘管理。甚至，政府的寬容政策、管制改變和企業醜聞等因素，也都會讓呆帳費用產生大幅波動。然而，呆帳費用是總成本的一部份，所有造成呆帳費用波動的原因，都可能進一步影響總成本，使總成本也大幅波動，本文將這樣的影響稱之為「成本管理」。過往成本效率的研究，使用的都是經過成本管理的總成本，而偏離真正總成本的結果導致銀行的效率表現也容易錯估。 本文提出了一個降低財報上呆帳費用波動的方法，盡可能地讓其在當期認列，成為符合經濟意涵的呆帳費用 (即「經濟呆帳費用」)。然後，用經濟呆帳費用求得當期理論上的總成本 (即「經濟總成本」)，並重新對台灣29家商業銀行的成本效率進行估計。實證結果顯示，經濟總成本不但遠高於財報上的總成本，所估得的效率排名也和原先有很大的不同，但明顯較符合現實狀況。

本文採用新的隨機共同邊界方法，將其擴充至Fourier富伸縮成本函數，針對西歐地區十個國家的銀行業進行成本效率之分析，資料期間涵蓋1996年至2010年。不同於Battese et al. (2004), O’Donnell et al. (2008), and Huang et al. (2011a) 等人利用線性規劃法，本文應用隨機共同邊界法來估計技術缺口比率，進而做跨國間的效率比較，此法的特點在於技術缺口比率可以設為一些反映國家環境差異的外生變數之函數，而線性規劃法則無法做此設定。實證結果顯示採用線性規劃方法所估計出的技術缺口比率與共同成本效率會有低估的現象，技術缺口比率以及共同成本效率在1996年至2000年間逐步上升，此結果支持金融市場的整合可以增進效率，然而，到2000年之後則反轉向下，特別是在2007年至2010年次級房貸風暴時期明顯惡化。此外，進一步的分群進行分析的結果顯示，小規模、高獲利、或是較保守的銀行相對來說較具有效率。 / This paper aims to gain further insights into cost efficiency using the newly developed metafrontier approach under the framework of the Fourier flexible cost frontier for banking industries across 10 Western European nations during the period 1996-2010. Unlike Battese et al. (2004), O’Donnell et al. (2008), and Huang et al. (2011a), who suggest using programming techniques, the stochastic metafrontier is formulated and applied to obtain the technology gap ratio (TGR) for efficiency comparisons among countries. One salient feature of our method is that the TGR can be specified as a function of some exogenous variables that reflect group-specific environmental differences, while the mathematical programming is not allowed to do so. Empirical results show that both TGR and metafrontier cost efficiency (MCE) are underestimated by programming techniques. The TGR and MCE exhibit a gradual upward trend during 1996-2000 and then followed by a downward trend, especially after the subprime crisis of 2007-2010. This suggests that a more integrated financial market is able to improve banking efficiency. Smaller banks tend to be more cost efficient than larger ones. Higher profitable banks and more conservative banks are related to greater efficiency.

隨著台海兩岸經貿往來密切，發展迅速，客觀上對銀行業提出了許多服務要求，為兩岸金融業的合作提供了廣闊的空間。本文通過採用數據包絡分析法和共同邊界成本函數比較分析了兩岸商業銀行的成本結構及效率差異，實證結果表示大陸商業銀行的成本效率要高於台灣銀行。對這一結果的可能性解釋是大陸銀行的資產規模要遠高於台灣銀行。銀行總資產越高，其獲取低投入要素價格的市場能力越強，因此生產成本更低，成本效率更高。台灣和大陸商業銀行有必要發揮自身的優勢，通過各種方式和渠道，加快兩岸銀行界合作的進程。 / With cross-strait rapid economic development and trade exchanges, huge business investments have induced a great demand for financial services and provided a broad space for cross-strait cooperation. This paper adopts data envelopment analysis and meta-frontier cost function to compare and analyze the different cost structure and efficiency of mainland and Taiwan commercial banks. The empirical results reveal that cost efficiency of mainland commercial banks is higher than Taiwanese ones, which is maybe caused by the larger bank size and total assets. The larger the size of banks, the higher the market power for reaping the benefits of low input prices, thereby resulting in a lower cost of production and a higher cost efficiency. It is necessary for mainland and Taiwan commercial banks to develop their own strengths to accelerate the process of cross-strait cooperation in the banking sector through various means and channels.

各國視生技產業為未來發展的關鍵產業，並積極推動各項政策，使生技產業能快速成長，而生技醫藥市場是促成全球生技產業成長的主要動力，為了增加我國的競爭力，希望藉由與鄰近國家醫藥產業的比較，能更了解台灣生技醫藥產業經營績效。 本研究採用Battese and Coelli (1995)隨機成本邊界法，針對2002-2007年間，日本、南韓、中國、印度與台灣等五個國家，共61家生技醫藥廠商進行實證分析，研究結果如下：(1)研發密集度增加使成本效率降低，五個國家裡，日本最具成本效率。(2)產業平均成本效率值為0.855，且有逐年惡化的趨勢。(3)整體產業平均處於遞增規模報酬階段。(4)整體而言，總要素生產力(TFP)的提升主要是因為規模成分的貢獻，其次為技術的進步，而技術效率變動率對TFP成長率為負影響。(5)各國間雖然TFP變動率不存在顯著性差異，但在規模成分、技術變動率與技術效率變動率等方面存在著顯著的差異。 / Many countries regard biotechnology as a key industry for the future development. Governments often implement a variety of policies to help it grow rapidly. The biotech pharmaceutical industry is the main momentum for the growth of the global biotech industry. The objective of this paper is to measure the productivity and efficiency of the industry among Asian countries, and investigates the sources of the performance changes, and then hope to give some insight into the enhancement of the industry’s productivity. To pursue our goal, we adopt Battese and Coelli’s (1995) stochastic frontier approach to assess 61 biotech pharmaceutical firms during 2002-2007. The main empirical results can be summarized as follows: (1) The R&D intensity is negatively related to cost efficiency; in five countries, Japan has the highest cost efficiency. (2) On average, the cost efficiency is about 0.86, and has become worsen year after year. (3)Most of time, the industry is characterized with the increasing returns to scale. (4) The growth of total factor productivity (TFP) is mainly attributed to the scale efficiency change, and technical progress accounts for a minor source. However, technical efficiency deteriorates over time. (5) Among countries, the TFP growth rates have no significant differences, but the components show apparent differences.

過去文獻大多使用Lerner指數來衡量銀行業之市場競爭度，但在計算過程中有可能出現其值為負之問題。為解決上述問題，本文運用關聯結構函數建立聯立隨機邊界模型，它由銀行成本邊界與兩條產出價格邊界所組成，可以同時衡量放款市場及投資市場之市場競爭度與成本效率。另外，為比較西歐五個國家的銀行市場競爭度與成本效率，本文進一步採用Huang et al. (2014)所提出的新隨機共同邊界模型，此模型除使用共同成本邊界計算技術缺口比率外，還透過產出價格共同邊界衡量潛在Lerner指數，進一步拆解成Lerner指數與MC gap ratio (MCGR)兩部分，可以比較不同國家間的市場競爭程度。 / This paper proposes the copula-based simultaneous stochastic frontier model (CSSFM), composed of a cost frontier and two output price frontiers for the banking sector, in order to measure cost efficiency and market power in the markets of loans and investments. The new Lerner index can be estimated by relying on the simultaneous equations model, consisting of three frontier equations, which avoids obtaining negative measures of the Lerner index. We then apply the new meta-frontier model to simultaneously estimate and compare cost efficiency and market power across five countries over the period 1998-2010. The salient feature of our proposed approach is that it allows for calculating the technology gap ratio on the basis of the cost frontier, as well as evaluating the potential Lerner index from price frontiers, which can be decomposed into the country-specific Lerner index and marginal cost gap ratio.

本研究以2000至2012年台灣地區26間人壽保險公司的不平衡縱橫資料，運用網絡隨機邊界分析法將壽險業的生產過程分為行銷與投資兩階段進行效率評估，並利用估計結果計算規模彈性與成本彈性探討台灣壽險業的生產特性，附帶分析跨期技術變動率，最後比較不同分組的壽險公司間經營效率是否存在差異。 實證結果發現壽險公司在行銷活動過程投入較少的內勤員工與較多的固定資產，在投資階段則相反，投入較多的內勤員工與較少的固定資產，與壽險公司實際運作情況相符；此外，投資階段的效率優於第一階段的行銷效率。整體台灣壽險業受到2008年金融風暴影響導致經營效率下降，國內壽險公司在經營效率上優於外商壽險分公司，金控壽險公司生產技術效率優於非金控壽險公司，1993年後成立的新壽險公司生產技術效率平均優於傳統舊壽險公司。 / This paper uses the copula-based network SFA model developed by Huang et al. (2013) to estimate the technical efficiency of Taiwan’s life insurance companies over the period 2000-2012. Under this framework, life insurance companies produce premium income as intermediate product which is one of input factors to produce investment income. The empirical analysis concluded: (a) life insurers use little internal staff in first stage, (b) domestic life insurers have both high technical efficiency and cost efficiency in comparison with foreign life insurers, (c) financial holding life insurers have greater technical efficiency than those of not from financial holding insurers, and (d) new life insurers have higher technical efficiency than old life insurers.

人類慾望無窮而資源有限，所以如何將資源做最有效的使用一直是經濟學所追求的課題。有關效率的規範分析中，巴瑞圖最適（Pareto optimality）為接受度最高的準則。基於巴瑞圖效率的觀點，不論是營利組織或非營利組織其經營之基本理念皆是希望以最少的投入獲得最大的產出，因此衡量投入與產出間之相對表現即為效率的評估。非營利組織及公共部門因為有許多產出、投入不易量化，故其效率不易評定。此一情況一直到DEA（Data Envelopment Analysis；資料包絡分析法）發展才逐漸改善。另外，有關DEA的運用幾乎都集中在個別決策單位的效率衡量，將之應用在衡量總體經濟的表現上非常少見。所以論文第肆章是按傳統方式以DEA衡量我國地方政府的效率並分析造成效率差異的原因，第參章則將DEA的概念應用於經濟成長上，探討使經濟成長達到極大化之租稅負擔及租稅結構。又效率的追求為經濟學的主軸，但中央政府的效率目標與地方政府並不相同，由於目標不同，因此彼此所訂的租稅政策亦不相同。本文第伍章試圖提出一理論模型說明中央政府在面對異質地區的垂直外部性下如何有效率的訂定其租稅政策。 / The human desires are infinite but resources are scarce. Using resources effectively is the topic of the economics. In efficient analyses, the Pareto optimality is the highest criterion to accept. Based on Pareto efficiency, the basic idea is to obtain the most outputs by the least inputs. Therefore the efficiency measurement is to calculate the relative performance of inputs and outputs. The nonprofit organization and the public agencies have many outputs and inputs not easy to be quantified; hence, their efficiency is not easy to evaluate. This phenomenon doesn’t improve until DEA (Data Envelopment Analysis) was developed. However, the application of DEA concentrates nearly on the efficiency measurement of individual policy-making unit; the application is be rarely used in measuring the performance of the macro-economy. Chapter 4 of this dissertation measures and explains the variation in cost efficiency of the local governments in Taiwan area. Chapter 3 deals with the application the DEA to economic growth, estimating a combination of the tax burden(the ratio of tax revenue to GDP）and the tax structure(the ratio of indirect taxes to direct taxes)which would maximize the rate of growth of GDP of Taiwan. Efficiency is the core of economics, but the national government’s efficient goal is not as same as the local government’s. Because their goals are not consistent, thus the tax policies are different. Chapter 5 attempts to propose a theoretical model to explain how a national or federal government decides its tax policy in the vertical externalities happening in heterogeneous states.