專門職業人員資格之取得，依憲法規定必須經過依法考銓之程序，此等對人民營業自由所設之規範，目的固在維護人民生命、身體及財產安全，為增進公共利益所必要，但也因此造成專門職業服務市場之參進障礙，形成供給面之限制。再者，由於專門職業服務具有資訊不對稱之特性，造成市場失靈現象，使得該市場中存有管制之必要性。然管制有其功效、亦有弊病，最明顯者是阻礙創新與進步。因此於管制的運用及競爭法之介入二者間，有必要尋求一適用之界線。 於外國實務上，如美國，歐盟和日本等，競爭法是否適用於專門職業已無疑義。除了在特殊情況下（如美國的州政府行為豁免原則）可能豁免競爭法之適用外，並不能僅因行為涉及專門職業即認為不適用競爭法。雖專門職業服務業與一般商業服務在性質上有所不同，惟此僅意味著在專門職業服務市場中之競爭狀況可能有所不同，故應以合理原則，於個案中具體考量產業特性、市場結構、行為效果等因素，始能作出是否違法之判斷結論。 99年開始我國公平交易法適用於專門職業服務業之問題開始發生爭議，短短5年內即可見行政法院之見解有明顯變化，而公平交易委員會歷經數案爭訟過程後，亦開始省思及加強如何論述其認定違法之依據，以尋求行政救濟機關之支持。本文即針對專門職業服務業於公平交易法上之適用關係與規範問題，進行深入之探討，並期能藉由法律與經濟等不同角度之觀察與分析，對未來公平交易法就此議題之具體適用方法，提出建議供參。 / Professionals are required to be registered through examination under the Constitution. Although such requirement is considered necessary to enhance public interests and to ensure the safety of the people and their properties, it also results in the barrier of entry into relevant market. Simultaneously, professional regulation is often addressed to a perceived “market failure” in the market for professional services due to its characteristics of information symmetry. Regulation of professional services can protect vulnerable consumers, but it can also prevent innovation and other competition. The conflict between regulation and free competition therefore exists and the boundary should have to be found. In US, EU and Japan, whether the competition law should apply to the professionals is no longer a question. Although professional services by their nature may differ significantly from other business services, that only means the nature of the competition in such services may vary and should be judged by the Rule of Reason under the competition law. Only in very specific situations (such as the “state action doctrine” in US) would there be an exemption. Similar discussion occurred in Taiwan since 2010, and just during 5 years could we see the obvious change of opinions expressed by Administrative Courts. Taiwan Fair Trade Commission faced numerous challenges through the petitioning procedure in cases related to professionals, and tried hard to strengthen the economical analysis in late cases. This study discusses the related issues of professional service under the Fair Trade Act through legal and economic analysis, and try to make recommendations on handling relevant cases.

本次採取個案研究方式，針對一家經營堅果原料出口貿易的中間商，藉著全球強勁的買方需求開始進入堅果原料市場。此公司座落在原料的產地，容易取得第一手的價格與產業情報，讓他們擁有資訊不對稱的優勢，來進行原料的銷售。 針對該中間商從銷售基本單位、銷售八大步驟、採購小組中心、4C架構、垂直整合等五個方式進行探討。此中間商成功進入台灣堅果原料供應鏈，主要在於能與上游供應鏈簽訂短期商品合約，保有原料價格的競爭力，並且能在其他競爭對手無原料時，適時提供客戶商品。在開發台灣市場發展的前期，由堅果原料供應鏈的下游開始，一路往上游尋找台灣的潛在客戶。此中間商取得下游廠商的信任後，運用彼此的關係取得上游買家的信任，加快銷售程序，以及減少採購單位的疑慮。個案中，該中間商曾試著透過策略聯盟的方式，與台灣小型網購業者進行堅果銷售，最後卻以失敗收場。 實際訪談個案公司與蒐集資料後，透過理論架構分析發現，一家企業公司要進入市場的前期，若花費精神調查供應鏈的結構來發掘潛在買家對象，且瞭解實際的需求與市場的競爭狀況後，再借助企業本身優勢，可成功取得代表性的客戶，容易成為此供應鏈的一員。但，隨著外部環境改變，企業的優勢是否會跟著改變，也是其個案企業未來尚須解決的議題。 / This research takes a tree nut exporting company, the Z Company, as case study to evaluate how the company took advantage of both strong international tree nut raw material demand and first-hand industrial and price information to enter the tree nut exporting industry. By facilitating its location advantage, which the company is located in the tree nut farm, the Z Company is able to hold first-hand information to create information asymmetry as advantage to sell the tree nut raw material. In the beginning stage in developing Taiwanese market, Z Company started and earned trusts from customers located in downstream tree nuts supply chain, and then took further steps to move upstream by exploiting the established trusts as references to gain trusts from the customers located in the upper stream of the supply chain. By doing so, Z Company was able to speed up the purchasing process and minimize the doubts for purchasing managers. In addition to this, Z Company also formed strategic alliance with a small Taiwanese online store to penetrate the market but did not receive much result. This research uses the concepts of basic sales unit, 8 steps to establish sales and customer relationship management, 4C framework of strategic marketing, and vertical integration to evaluate the developing path of Z Company. The research found that the reason why Z Company can successfully enter the tree nuts supply chain in Taiwan is that Z Company is able to sign shirt-term merchandise supply contract with the suppliers to ensure the competitiveness in price and secure the product supply, while on the other hand offers timely supply of material to the customers when other competitors fail to fulfill the product demand. This research discovered that in the beginning stage of market entry, it is ideal to utilize the company’s resources to discover who the potential buyers are and what the real market demand and the degree of competitiveness is. Then, the company should take its interior strength to acquire customers with industry influence as representative case so that it can easily become one of the members in the supply chain. However, as the external environment changes, the company’s advantages in the industry are very likely to change as well, therefore how to respond to such change will be the future development issue for the company.

論文提要內容： 圖論上，定義兩點相似（similar ）：若a ，b 是圖G 上的兩點，且存在一個定義於 V （G ）的某排列φ，滿足：（１）φAut（G）及（２）φ（a）＝b，則稱G 之a，b 兩點相似。由定義吾人固然知必有一φ Aut（G），滿足φ（a）＝b，如果G 之a，b 兩點相似的話。然而，有人不禁會問：若G 上任二點a，b相似 ，則是否存在一φ Aut（G），同時滿足φ（a）＝b且φ（b）＝a呢?（ 本文稱G 為 對稱相似（symmet-rically similar），若答案為真時。） 作者在研究GRAPH RECONSTRUCTION CONJECTURE 時，亦產生相同的疑問。本文乃作者 試就此一問題，將樹形圖（Tree）加以研究，發現：凡是具有有限點的樹形圖（fin- ite tree）皆具備此特性。 本文共分二章四節。首先，吾人知：任意樹形圖乃一不具環路的聯結圖（acyclic c- onnected graph），且任二不同點a ，b 僅可決定出唯一的（a－b）路徑（ path ） 。 本文先針對此路徑觀察出二項特性：（１）當（a－b）為偶路徑，m 為其中點，且φ （a）＝b，φ Aut（G）時，φ作用在m，n之後對調（即φ（m）＝n且φ（n ）＝ m 。其證明包含在定理２．１．７及定理２．１．９之中。 其次，以定理２．１．７及定理２．１．９為基礎，本文將證明出：確實存在－φ Aut（G），同時滿足φ（a）＝b且φ（b）＝a，此處G 為一樹形圖。 由於找不到反例，本文將給一個Conjecture作為總結，即：任一有限simple圖皆具對 稱相似性。

Abstract In this paper, we examine the relation among different information asymmetry measures in Taiwan Stock Exchange and exploit the ability of the microstructure measures to measure asymmetric information. We also investigate the role of information asymmetry measures in affecting stock returns. With a random sample of 180 firms, we find that the market microstructure measure is significantly correlated with most of the corporate finance measures that should shed lights on the level of information asymmetry in advance. We also find that the analysts’ forecast measures have no relation with the microstructure measure. One main result is that the adverse selection risk does affect the stock returns. For the whole sample period, the adverse selection component has a significant impact on the stock returns and dominates all other variables except for the number of analysts following. Other significant measures include the volatility, firm size, leverage, and market to book ratio of equity. Although these information asymmetry measures act as competent determinants in the whole- period regression, they do not have consistent performance across quarters. The inconsistent result suggests that these measures may have diverse performance with regard to different periods.

中文摘要 對於資本市場來說是外國公司的買賣價差的三個成分：逆選擇成分、交易成本成分及存貨成本成分相對於本國公司的買賣價差三成分構成有可能不同。 此篇論文中比較相同股票在不同市場所發行股票，其買賣價差三成分。根據本篇實證結果，相同一支股票在美國NYSE或是NASDAQ的逆選擇成分顯著的高於在TSEC發行的逆選擇成分，這暗指著資本市場中有很多不一樣的地方值得探討，像是流通貨幣的不同、或是法規治令的不同以及取得非公開資訊的難易程度也不同。另外，根據之前的研究的顯示，買單接著買單、賣單接著賣單的機率趨勢也很強，我們也發現了這種現象在TSEC很明顯，根據此篇論文的結論，這大部分的原因很可能是因為TSEC有「限價」規定的緣故。 / Abstract The three components, adverse selection component, order processing component and inventory holding cost, of companies which regarded as foreign companies in terms of the capital market are different from those in domestic capital market. In this paper, the adverse selection components of the stocks we choose in NYSE or NASDAQ are significant higher than those in TSEC. It implies the differences of capital markets, such as currency ,regulation and easy or not obtaining the private information of the company. Furthermore, similar to previous studies, there are strong tendencies for buys follow buys and sells follow sells. We find that the most part of proportion of order persistence derives from price limit in TSEC.

由中央與地方之間財政關係中權力不對等與對利益要求的目標不一致以及委託代理結構中委託人與代理人同樣存在著資訊不對稱與目標不一致的特性。是以中國大陸中央與地方之間必然存在著委託代理問題，代理人常常只會追求著自己的目標，甚至會損害整體利益，中國大陸中央與地方之間的一切矛盾與問題起源自中央權力大過地方，因此中央動輒使用「決定」與通知這類的行政性指令，取代應該經由制度或是法制的模式來調整諸如財政管理體制等政策，造成地方擁有較多的資訊，但在權力上卻無法脫離中央而獨立。換言之，地方在某些程度上仍受中央所控制，在分稅制實施之後，中央與地方雖然各自有其所屬的稅種，但中央與地方共享稅的分成比例以及何種稅種屬中央抑或地方，這些事項縱然不致於全盤由中央決定，但未來中央與地方定會共同協議與決定財政資源的分配比例。 是以由委託代理理論來驗證中國大陸中央與地方之間的財政關係，本論文發現中央與地方之間所產生種種問題，乃是因為缺乏制度化以及法制化所致，中共中央以行政性指令來達到其分權、集權的目的，這些措施卻不能真正解決問題。制度變遷與經濟發展係為促進中國大陸經濟成長及中央、地方之間財政資源配置產生變動的重要誘因。在此前提下，制度變遷促成市場機能逐漸恢復，以及經濟發展使得生產、就業結構改變。是以由中國大陸的財政收入結構產生根本的改變、中央與地方對於財政資源的配置仍未訂定合理的比例，以及中央政府仍然能夠主導資源配置這三方面觀之，未來只有在中央主導下與地方協調共同決定財政資源的分配比例，這是本論文研究的發現。

本文以 GJR-GARCH 為分析模型，針對所選八家台灣上市公司股價所計算之每日對數報酬率(daily log returns)，對於各種不斷到達的新增訊息所引起的波動反應。所納入條件變異數方程式的訊息到達(解釋變數)分別為：(1)同日成交數量(2)成交量變動率(3)星期一與星期五之日曆效應(4)不同權值規模(size-based)投資組合間的波動外溢效果。研究結果發現(1)同日成交量對於台股權值較低的小公司，有能力捕捉其波動性，但是對於權值偏高的大公司，其解釋能力顯有不足(2)成交量變化普遍會導致公司報酬率的波動(3)臺灣股市波動性並不具有星期五效應，至於星期一效應也只出現在部分的小公司(4)不同規模的投資組合間雖然互有波動外溢現象，但其不對稱性非常明顯， 亦即訊息到達後，先造成大公司股價的波動，此波動再進而影響到小公司，引起小公司股價的波動。 / Applying the GJR-GARCH model to the daily returns of eight selected firms from Taiwan stock market, this paper examines response of variance volatility to various information arrivals which separately include (1) concurrent trading volume (2) change in trading volume (3) calendar effects, especially Modnay and Friday effects, and (4) asymmetric volatility spillover between two sized-based portfolios. The results find that concurrent trading volume as a proxy of information arrival dramatically reduces volatility persistence of the small firm's conditional variance, but has little influence on large firm's, and change in trading volume cause significant change in conditional variance. Although there is a conjecture that the volatility in stock markets may be higher on Monday and Friday, it can't be found in this study. The results also strongly support that the volatility spillover effect from larger to small portfolio is more significant than that from smaller to large portfolio.

強制汽車責任保險自1998年1月1日實施至今，立法精神及施行成效深受社會大眾肯定。隨著社會安全制度的持續發展，持續進行全盤檢討，並於2005年2月5日公布新修正強制汽車責任保險法，3月1日正式實施。 由於強制汽車責任保險風險分類直接反應於費率計算，資訊不對稱容易形成道德風險，被保險人與保險人產生顯著資訊落差，保險人無法合理歸類被保險人風險特性，保費計算上易受外界雜訊所影響，產生嚴重道德風險。為降低資訊不對稱的成本增加，保險輔助人成為被保險人與保險人間資訊傳遞的重要中介機構。如何健全保險輔助機構的執業規範及分工定位，以降低資訊不對稱所造成之負面影響，成為強制汽車責任保險的重要監理議題。 本研究主要檢視現行強制汽車責任保險制度，如何有效規範保險輔助人，強化保險作業與交通監理作業降低資訊不對稱成本，討論具體措施諸如設立保費查詢中心、確保理賠損失資料之正確性、各項財務資訊揭露透明度與落實保險人之差異化管理政策，並歸納具體建議如下： 一、 建立強制汽車責任保險專屬網站，強化資訊揭露； 二、 交通監理作業投保查詢應整合保險查詢，減少代理成本； 三、 落實保險人內部稽核，建立承保及理賠標準流程； 四、 建立保險輔助人評等制度，維護市場公平競爭； 五、 車種分類及費率精算宜朝簡化為原則，避免道德風險。 / The Compulsory Automobile Liability Insurance Law has been enforced since January 1, 1998, the spirit of the law and the goodwill lay behind it were highly praised by the general public. However, as the social security system continuously has developed and evolved, the law was deemed insufficient and inadequate. Therefore, experts and scholars proceeded to review the law and finally in February 5, 2005, a revision of the law was announced to the public and officially enforced in 1st March the same year. Since the risk classification of Compulsory Automobile Liability Insurance directly reflects on rate calculation, information asymmetries can easily cause moral hazard. As the insured and insurers have significant information gap, insurers cannot categorize reasonably the characteristics of insured's risks, the premium calculation therefore can be affected by external noises that leads to serious moral hazard. To reduce the cost of information asymmetry, insurance brokers or agents becomes the insured and insurers' important intermediary for transmitting information. How to build sound operating norms, share the work, position insurance brokers or agents and reduce the negative impact on information asymmetry have turned out to be very important supervisory topics of Compulsory Automobile Liability Insurance. This study is mainly examining the existing Compulsory Automobile Liability Insurance system; regulating insurance brokers or agents effectively; strengthening insurance and traffic supervision operations to decrease the cost for information asymmetry; discussing specific measures such as the establishment of premium check center so as to ensure the accuracy of claim information, the transparency of financial information; in addition, implementing the differentiation management strategies of the insurers. The specific recommendations are summarized as following five points: 1. Establish official website for Compulsory Automobile Liability Insurance and strengthen the disclosed information; 2. The insurance check in traffic supervisory operations shall be integrated with premium check center so that agency costs can be lowered; 3. Put into effect the insurers' internal audit to build up the standard of processes of underwriting and claims; 4. Establish the rating system for insurance brokers or agents so as to maintain fair market competitions; 5. Simplify the classification of type of vehicles and rate calculation to avoid moral hazard.

過去研究指出，公司管理當局可藉由即時揭露更多攸關資訊以降低市場之資訊不對稱，而管理當局所發布之財務預測亦為揭露資訊之一種。我國證管會於民國八十年五月起正式實施強制性財務預測制度，影響資本市場甚鉅。本研究旨在探討管理當局所發布之財務預測對資本市場資訊不對稱之影響，進而推論我國強制性財務預測制度對於降低資本市場之資訊不對稱是否有其功效。 本研究採用股票交易量、股價變異性及市場深度作為資訊不對稱之代理變數，實證結果顯示： 1.在強制性財務預測制度實施前，自願發布財務預測之公司於預測發布後，其資訊不對稱顯著較預測發布前降低；然與未發布財務預測公司相較之結果卻顯示，以股票交易量為資訊不對稱之代理變數時，發布財測公司於預測發布後之資訊不對稱反而顯著較未發布財測者為高。 2.在強制性財務預測制度實施後，強制或自願發布財務預測之公司於預測發布後，其資訊不對稱程度仍顯著較其發布前降低；而以股價變異性為資訊不對稱代理變數之結果亦顯示，發布財測公司於預測發布後之資訊不對稱顯著較未發布公司為低。 3.以市場深度為資訊不對稱代理變數之結果顯示，在強制性財務預測制度實施後，發布強制性財務預測之公司，其資訊不對稱於預測發布後顯著降低；此外，與發布自願性財務預測公司相較之結果顯示，發布強制性財測公司於預測發布後，其資訊不對稱程度不顯著高於發布自願性財務預測者。 / A firm can increase levels of disclosure to lower the information asymmetry. Financial forecast released by managers is also one of information about corporation. Our country began to implement the mandatory financial forecast regulations since May, 1991. This study mainly investigates the association between financial forecast released by companies and the mandatory financial forecast regulations. Furthermore , it also investigates that if the regulations effectively mitigate information asymmetry. This study uses trading volume, price volatility, and market depth as proxies for the information asymmetry. The empirical results show that: 1.Before May, 1991, corporations with voluntary forecast significantly mitigated the information asymmetry after the forecast released. But the information asymmetry (use trading volume as a proxy) of corporations after forecast released was not significantly lower than corporations without forecast. 2.After May, 1991, corporations with mandatory or voluntary forecast also significantly mitigated the information asymmetry after the forecast released. And the information asymmetry (use price volatility as a proxy) of corporations after forecast released was significantly lower than corporations without forecast. 3.After May, 1991, corporations with mandatory forecast significantly mitigated the information asymmetry (use market depth as a proxy) after the forecast released. And the information asymmetry of corporations after mandatory forecast released was not significantly higher than corporations with voluntary forecast.

近年來，中國的經濟表現受眾人稱羨之餘，實質固定匯率政策卻為人所詬病。然而，中國人民銀行於 2005 年 7 月 21 日公告一套以市場供需為基準的管理浮動匯率制度後，人民幣遂開始逐步升值並連帶地牽動亞洲其他國家幣值變化。為瞭解人民幣變動對亞洲四小龍國家幣值的外溢效果，本文利用動態條件相關係數模型，透過人民幣和亞洲四小龍貨幣的無本金交割遠期外匯分析相關係數。最後發現，人民幣和四小龍貨幣間存在不同程度的正相關，且此動態相關性自 2008 年起日與俱增。