本篇以政府採行租稅混合為為核心，在產市勞市交互運作影響下，作地下經濟與地上經濟的兩部門一般均衡分析。我們不僅從租稅收入面探討租稅逃漏，更將觸角延伸至至政府支出面。最後，以這樣架構下分析公共財的Samuelson條件。 　　本文大致上可分為兩部分，第一部分以數學比較靜態及數值分析，討論政府的租稅工具－直接稅和間接稅，公共財，懲罰工具－逃漏直接稅和間接稅的懲罰稅率，等政策工具對經濟變數尤其是逃漏的影響。第二部分，我們承襲Usher(1986)，討論有租稅逃漏時對政府採行租稅混合稅制下公共財的提供成本，亦即Samuelson條件。 　　第一部分，我們發現：所得稅率和消費稅率提高均使地下勞工比例上升。透過租稅混合效果下，對地下對黑市勞工比例影響不確定。可是隨著消費稅期望懲罰率逐漸提高，所得稅率比消費稅率對地下勞工比例的影響來得大，故租稅混合在此情況下抑制逃漏的效果也將更佳。此外，當原本地下經濟很小及消費稅稅率較高時，則租稅混合抑制逃漏的效果也將不太大。 　　消費稅和所得稅期望懲罰率對經濟體系的影響恰與與消費稅和所得稅的影響相反，而且前者相較於後者更能抑制消費稅逃漏，政府提高這兩種懲罰率均能抑制地下勞工比例，然而卻是以降低地上勞工工資為代價。 　　公共財對經濟體系的變數影響不確定，但是可發現若公共財對地上經濟生產越具生產力越能抑制地下勞工比例。 　　第二部分，我們發現：當查核成本是固定時，在有逃漏情況下，除了得考慮租稅混合稅制下的扭曲成本，亦即租稅混合對稅基的影響，尚得考慮租稅混合稅制下對逃漏的影響。另一方面，公共財對地下勞動比例和消費稅稅基的影響也關係著公共財的提供成本。當查核成本是內生期望懲罰率的函數時，此時查查核成本是非固定的，公共財的提供成本除了受前項的考量因素影響外，尚得考慮租稅混合稅制及公共財對淨查核成本的影響。

現代科技產業發達，「消費性耐久財」，也就是所謂的科技產品日新月異，新產品推出後開始其創新擴散與為大眾所接受的過程。在科技產品相同品項中，常存在著代表標準的主流技術或產品，而該主流品牌易成為上下游廠商競相合作的對象，這樣的地位也保證著高度的消費者採用意願。個人自我創新特質可決定是否採用新技術產品，不可忽略的是來自週遭人群採用的網路外部性影響，越多人採用能降低使用上的風險與不確定性，並提高生活與工作上的效率；互補性產品推出亦會因多人採用而越發完善，如此便能更確立其產品或技術在市場中的主流地位。 本研究以2010年初上市的蘋果電腦iPad為主要被接受科技，至今已帶動許多科技大廠投入平板電腦市場，其中不乏電腦與智慧型手機業者，甚或是電信業者亦欲加入此新世代多點觸控風氣盛行的平板電腦產業，蘋果電腦iPad的銷售量居高不下，顯示其儼然已位居主流產品地位。為了能探究其活化已瀕臨死亡的平板電腦市場之因，本研究認為應以創新擴散理論、科技接受模型與網路外部性的組合做為研究探討基礎理論，並採用品牌形象、涉入程度與資訊構面來輔佐加強，以達到與過去國內科技產品創新接受模型的差異化的目的，提供不同方向的切入點。本研究盼能在以問卷量化設計的構面採用中，將蘋果iPad此等消費性耐久財的廠商面與消費面間策略取得平衡探討，提供給平板電腦廠商思考行銷與聯盟策略上的參考依據，而本研究結果發現如下： (一) 個人內在創新特質與兩種外部因素代表的網路外部性，會正面影響採用者對於蘋果iPad的正面創新知覺特質，形成正面的採用態度；在採用者部份負面創新知覺特質上，也有負面效果存在。 (二) 尚未購買者的採用意願較不受負面創新知覺特質影響，正面知覺特質有助於增加已購買者的未來繼續採用意願。 (三) 有形與無形品牌形象中，唯有無形者對於繼續採用意願的增強無效。 (四) 加入對於蘋果iPad產品涉入程度考量後的廠商與消費資訊，並不完全提升對繼續採用意願的影響效果，且對於採用意願無顯著影響。 故整體而言，平板電腦廠商，應能由廠商與消費面切入思考產品研發與行銷策略，由目標市場的需求做基礎考量新產品功能，並善用品牌、銷售與廠商策略聯盟資訊，增強採用者的好印象，才能真正擴散其創新科技以達永續經營。 關鍵字：創新擴散、科技接受、網路外部性、涉入程度、品牌形象 / Global technical industry booms, especially the “consuming durable,” or the so-called “technical products” evolves fast. After new products are launched, the innovation diffusing and generally accepted procedure starts. Among the same technical items, there is always a mainstream technology or product which could play the role as a referred standard. And the mainstream brand would easily become the one that up and downstream manufacturers long to cooperate with. The position will also present the highly consumer accepting intention. Self-innovation could be an important dominant factor deciding whether to accept product with new technology. However the external network effect from the acceptance of people around is indispensible as well. As a rule of thumb, more acceptances could reduce the risk and uncertainty when using the targeted product or technology. Meanwhile, this will also increase the efficiency in daily life or at work. Complementary goods would develop more completely because of mass acceptance and this way it will help ensure the mainstream role of product or technology in the market. The research would take Apple iPad which was launched in the early of 2010 as the main accepted technology. It has encouraged many famous technical firms to join the new generation tablet PC market, including not only the originally computer and cell phone but also telecommunication firms. The highest sales among the tablet PC market showed iPad’s role as the mainstream product and technology. This research would take innovation diffusion theory, technology acceptance model and network externality as the basic theoretical combination to discuss the phenomenon that iPad helped excite tablet PC market. Besides, we add brand image, involvement, and information factors to our research framework so as to distinguish from and hope could provide more perspectives to the past theories discussing consuming durables’ innovation diffusion. And we expect to design ideal questionnaires including all the factors discussed, strike a discussing balance between firm and consumer strategies, and providing the consequence for Tablet PC firms’ considering marketing and cooperation strategies as supporting references. The following points are main conclusions of this research: 1. Internal self innovation and two kinds of network externality have positive effects on consumers’ positive innovative perceptions when accepting iPad; negative effects on negative innovation perceptions. 2. Potential buyers’ accepting intentions are less affected by negative innovative perceptions, but positive innovative perceptions would positively affect buyers’ continuing accepting intentions. 3. Only intangible brand image has no effect on buyers’ continuing accepting intentions. 4. After taking iPad product involvement into consideration, we found that the effects of information on accepting intentions will not be enhanced but will have partial effect on continuing accepting intentions. Considering everything, Tablet PC firms should do the product R&D and marketing plan on the basis of firm and consumer, launch the new function by taking consumer’s demand into consideration, and take full advantage of brand, sales and firm cooperation information to leave good impression on consumers. This way, they could really diffuse innovation and fulfill the goal of eternal operation. Keywords: Innovation Diffusion, Technology Acceptance, Network Externality, Brand Image, Involvement.

近年來，消費者對於高科技產品，往往會聽從他人意見，選擇主流的品牌與機型，尤其是具有相同背景與生活方式的消費者，所選擇的高科技產品通常非常相近。其次，更可以發現，高科技產品之使用年限不斷地縮短，推出新規格產品的速度越來越快，導致消費者越來越憂慮高科技產品之過時。 本研究智慧型手機為例，經由回顧文獻與理論，再以實證資料探討造成高科技產品具有從眾傾向之成因、分析消費者的特性(主觀產品知識、從眾傾向、獨特性需求)對於產品過時之不同憂慮(憂慮技術性過時、憂慮經濟性過時、憂慮心理性過時)的關係，以及了解新一代高科技產品的採用意願之影響因子。 本研究利用問卷發放的方式蒐集資料，得到之結論如下： 1. 消費者購買智慧型手機時較有從眾傾向 2. 使用者網路外部性增強消費者購買智慧型手機之從眾傾向，而主觀產品知識降低消費者購買智慧型手機之從眾傾向 3. 消費者主觀產品知識越高，對於智慧型手機過時之擔憂越低 4. 獨特性需求較高之消費者，較憂慮技術性與心理性過時；從眾傾向較高之消費者則較憂慮經濟性過時 5. 消費者憂慮經濟性過時與主觀產品知識越高，採用創新智慧型手機之意願越高；消費者憂慮技術性過時越高，採用創新智慧型手機之意願越低 最後，本研究根據分析結果，提出整體行銷建議供相關業者參考。

當今智慧型手機成長快速，市場潛力大，影響消費者的智慧型手機購買決策因素成為近年來值得研究的議題。但過去有關智慧型手機購買決策的研究中，大多著重在手機的作業系統或是功能層面，並未將行動應用程式(APP)及人際面的影響因素納入考量。因此，本研究以網路外部性、科技接受模型及理性行為理論為基礎，分別從智慧型手機及行動應用程式的屬性面和人際面來探討，目的為找出影響台灣地區現有智慧型手機使用者對智慧型手機再購意圖的因素，並進一步探索這些因素如何影響使用者的態度及再購意圖。本研究結果發現： 1.智慧型手機屬性面：當使用者認為智慧型手機是越有用的、越具娛樂性的，則使用者對智慧型手機的採用態度越正向；當使用者認為智慧型手機是越容易使用的，並不會直接影響其對智慧型手機的態度。 2.智慧型手機人際面：當使用者認為有越多人使用智慧型手機，則使用者對智慧型手機的購買意圖越正向；而無論使用者認為其家人、伴侶、好友、同學或同事支不支持其使用智慧型手機，都不會影響其對智慧型手機的購買意圖。 3.行動應用程式屬性面：當使用者認為在短時間內行動應用程式的數量成長的越快速，則其對智慧型手機的態度會越正面；而無論使用者認為APP數量、種類的多少、價格是否可被接受以及APP的設計品質完不完善等，都不會直接影響使用者對智慧型手機的態度。 4.行動應用程式人際面：當使用者認為其家人、伴侶、好友、同學或同事越支持其使用行動應用程式時，使用者對智慧型手機的態度會越正向。

平台的興起改變了傳統消費模式，因此無論是在學術界或是實務界，強調互動的社群商務在近年來都漸漸受到重視。然而，從社群中內容經營者的角度出發探討社群商務經營狀況的相關研究不多；此外，社群商務與網路外部性的連結也相對缺乏，故本研究欲以台灣影響力最大之社群平台Facebook的粉絲專頁為例，探討社群商務「使粉絲變成消費者」的流量變現過程，供未來社群商務經營者參考。 本研究以學者Hagel & Armstrong（1998）提出的會員發展四階段作為研究架構，採個案研究法，選擇「傑利帶路 玩世界」與「I’m 布布媽咪／Chic KimBlake」為個案，透過深度訪談探討選擇個案從內容社群至社群商務的經營過程中，每一階段形成正向網路外部性的關鍵成功因素以及做法，並同時分析不同的訴求類型於粉絲專頁上的影響與效果。 研究結果顯示，在社群商務的整體經營中，人格力、社群力以及產品力為三大關鍵成功因素，並且依序在吸引會員（製造流量）、增加參與（集中流量）、建立忠貞（鎖住流量）三階段扮演關鍵角色，最終實現價值獲取（流量變現）的目的；除此之外，感性的訴求在社群商務前期扮演相對重要的角色，而訴求的有效性與社群商務提供的產品與服務類型並無直接相關。 / The new economics of platform changes traditional purchase process and reconstructs value chain, giving the market new business rules. Thus, social commerce which emphasize interaction between customers and operators has been widely discussed in recent years. Numerous studies focused on customer behavior in social commerce but barely discussed business operation of social commerce from platform operators’ perspectives. As a result, this study is aim at exploring the traffic monetizing process in social commerce operating. This study applies case study method, analytic frame is adopted from the Four Phases to Developing Sustainable Virtual Community of Prof. Hagel and Armstrong published in 1998. “JerryWalker” and “Chic KimBlake” on Facebook fanpage are chosen as the research targets. Start by in-person interview with each targeted cases and supplemented by second-hand sources, inspecting the process from solely content operating to social commerce operating, also analyze key successful factors in each phase; moreover, this study will also discuss different types of appeals’ influence in social commerce. The results of this study shows that “personality”, “community operation” and “product and service” are the three main key factors while building up a successful social commerce. Besides, these three factor correspond to Phase I-generate traffic, Phase- II concentrate traffic, and Phase-III lock in the traffic in order, through this process can monetize community traffic and reach positive network effect. Furthermore, emotional appeals show better effect in social commerce regardless of different kinds of provided product and service.

近年來，國人追求健康、愛美等因素而運動風氣蔚為盛行，連帶擴大穿戴型裝置產業發展，越來越多廠商加入。而在競爭激烈的全球市場中，不少廠商以平台經濟模式的建立及善用網路外部性的發展為轉型的策略，其中，如何有效率擴大平台規模及提高顧客黏著度尤其重要。本研究著重於以下三點：個案公司之平台商業模式的運作機制、如何創造不同種類之網路外部性及如何管理網路外部性創造更多效益。 本研究採取單一個案研究法，並挑選從GPS大廠成功涉足智慧型穿戴式裝置且近年來積極轉型之台灣國際航電股份有限公司(Garmin Corp.)，經過研究個案公司平台商業模式與網路外部性的創造及管理，歸納本研究之發現：Garmin透過Garmin Sports平台的管理，建立與外部用戶的關係；並藉由穿戴式裝置的租借與其他廠商合作活動帶動運動市場貿易；再教練培訓為中心出發，提供一套專業、完整的課程，建立平台生態圈，擴大平台規模。 本研究之貢獻在於透過Garmin Sports的案例建立一套平台發展與網路外部性的創造與管理之架構，以期了解透過平台網路外部性發展如何提升使用者價值、為使用者帶來更多效益。歸納出三項因素如下： 1. 專業人士與外部廠商 2. 互補品的發展與資料庫的建立 3. 透過多方用戶的選擇與舉辦活動來管理網路外部性 此外，本研究為Garmin Sports平台成立初期，上線時間較短，部分網路外部性的交互影響研究受限。故建議後續研究，可待Garmin Sports平台運作期間較長，其網路外部性的創造與管理及不同種類網路外部性之相互作用亦會較為明顯。 / In recent years, the atmosphere of physical workout becomes prevalent, which results in the expansion of wearable device industry, causing more and more companies join in this industry. Under such a highly competitive global markets, platform transformation gradually becomes a popular strategy. In the research, our main focus lies on what the platform business model is and how to create and manage different kind of network externality. The case study method is applied for this research. We select Garmin Corp, a GPS corporation which successfully develops wearable devices in recent years and has transformed into a new business model as our research subject. With in-depth case study of platform business model and the creation and management of network externality, we conclude our findings as below: Garmin establishes the relationship with external users and cooperates with other companies through the management of the Garmin Sports platform by leasing wearable devices. To expand the scale of the platform, Garmin provides a set of professional training camp and competitions, so as to establish the platform ecosystem. The academic contribution of this study is to create the structure of developing platform and managing network externality, hoping to bring more value and benefits. The factors are as below: 1. Experts and external companies 2. Complementary products and database setup 3. multi-user selection and managing network externality through events In addition, this study is about the beginning of Garmin Sports platform in which on-line time is short and the interaction of network externality is limited. It is recommended that, for the follow-up research, researches should wait for Garmin Sports platform to operate for a longer period of time. Therefore, the creation and management of network externalities and the different types of network interaction will be more obvious.

人類的思考決策與行為結果，大多是依循一個明確的市場制度而為的，故市場經濟制度的重要性，就在於有利個人形成如何有效配置資源的合理預期，同時也富有約束及激勵個人行為的誘因，讓個人能在制度約束的條件下，追求自利動機的極大化。都市空地再利用及市地重劃的法令制度，就具有這樣的經濟效應，所以本研究主要在探討，在空地再利用及市地重劃制度的約束與激勵條件下，都市中的經濟人行為決策與個體互動所形成的空間外部性，其會如何反應在住宅土地價格的變動，以探討空地再利用及空地開發所產生的空間外部性對住宅土地價格之影響。本文主要包括（1）空地再利用對住宅土地價格之影響；（2）空地再利用及鄰里土地開發對新建住宅土地價格之影響；（3）空間外部性、交易成本與市地重劃對新建住宅土地價格之影響等。 首先，有關「空地再利用對住宅土地價格之影響」，本文以Geoghegan（2002）的理論模型為基礎，主要探討空地再利用所產生的開放空間效果，其對於住宅土地價格的影響分析。本文運用地理資訊系統及空間計量分析，並建立民國九十三年及九十四年住宅土地的特徵價格模型，研究對象以台南市為例。實證結果發現，公有空地再利用作為公園及臨時停車場使用，其對於住宅土地價格產生正的空間外溢效果，此表示空地再利用所產生的開放空間的外溢利益，其大於空地管理維護的外溢成本。私有空地再利用作為運動場使用，民國九十三年的外部成本大於外部利益，但於民國九十四年的外部利益大於外部成本，故就私有空地再利用的外溢效果而言，私有空地再利用作為運動場使用的外溢效果可由負向轉為正向。公有空地再利用的邊際價格較私有空地再利用的邊際價格為高，故政府應繼續推動公有空地再利用的政策，以彌補鄰里的開放空間不足。 其次，有關「空地再利用及鄰里土地開發對新建住宅土地價格之影響」，本文主要在探討空地再利用所產生的開放空間效果，及鄰里土地開發所產生的空間外溢效果，兩者對於新建住宅土地價格的影響分析，本研究範圍以台南市民國九十三年的新建住宅為對象。實證結果發現，公有空地再利用對於新建住宅土地價格具有正的空間外溢效果，此表示開放空間的外溢利益大於空地管理維護的外溢成本。鄰里土地開發作為住宅使用時，會對新建住宅土地價格形成正的空間外溢效果，但當鄰里土地開發作為工廠使用時，卻會對新建住宅土地價格形成負的空間外溢效果。最有價值的住宅土地為，開放空間數量最大化及土地開發數量的最小化，故當永久性的開放空間(如鄰里公園)、可開發性的開放空間(如公有空地再利用)數量增加，以及鄰里工廠土地開發數量減少等，其將有助提高新建住宅土地價格。 最後，有關「空間外部性、交易成本與市地重劃對新建住宅土地價格之影響」，本文主要從政府實施市地重劃有助於降低交易成本的觀點，探討政府實施市地重劃制度及建設商的土地開發行為所產生的空間外部性，其反應在新建住宅土地價格的影響。本文運用空間計量分析及地理資訊系統，並結合Box-Cox函數轉換，以建構具有空間外部性的特徵價格模型。本文研究範圍以台南市民國八十年、八十五年及九十年的新建住宅為對象。實證結果得知，空間誤差Box-Cox模型對於空間外部性提供良好的解釋力。政府實施市地重劃之後對住宅土地價格具有正向外部性，且有政府參與的重劃區所反應的住宅土地邊際價格為正向關係。而建設商個體互動關係則具有正向及負向外部性，並在長期下出現由正向轉為負向之情況，此證明空間外部性會呈現相互性的現象，進而反應在新建住宅土地價格上會有增減的作用。 / This study mainly assumes that development of vacant land give rise to spatial externalities from the reuse of vacant land and the institution of land readjustment. Finally, this effect will be reflected in the residential land prices. To test this hypothesis, this study applies spatial econometric and geographic information systems based on hedonic pricing model. This study mainly includes that (1) The Impact of Reusing Vacant Land on Residential Land Prices, ( 2) The Impact of Reusing Vacant Land and Neighboring Land Development on Newly-Built Residential Land Prices, ( 3) The Impact of Spatial Externalities, Transaction Costs and Land Readjustment on Newly-Built Residential Land Prices, and evidence from Tainan City in Taiwan. First of all, about’ The Impact of Reusing Vacant Land on Residential Land Prices’, This study is based on Geoghegan’s theoretical model (2002) and focuses on open space effect of reusing vacant land on residential land prices. The data are selected from residential land prices in 2004, 2005. Empirically, I find that the reuse of publicly-owned vacant land used for green and park has positive spatial spillover effects. This means that spillover benefit of open space is more than spillover cost of vacant land management. The reuse of privately-owned vacant land used for sport has negative spatial spillover effects in 2004. The marginal price of publicly-owned vacant land is over than privately-owned vacant land. It is concluded that, the government should continue promoting the reuse of publicly-owned vacant land and used for open space of the neighborhood. Secondly, about’ The Impact of Reusing Vacant Land and Neighboring Land Development on Newly-Built Residential Land Prices’, This study focuses on open space effect of reusing vacant land and spatial spillover effect of neighboring land development on newly-built residential land prices. The data are selected from newly-built residence in 2004. Empirically, I find that the reuse of publicly-owned vacant land has positive spatial spillover effects on newly-built residential land prices. This means that spillover benefit of open space is more than spillover cost of vacant land management. Land development used for residence has positive spatial spillover effects and used for factory has negative spatial spillover effects in a neighborhood. This means that more the reuse of publicly-owned vacant land will increase newly-built residential land prices, while more land development used for factory will decrease newly-built residential land prices in a neighborhood. Finally, about’ The Impact of Spatial Externalities, Transaction Costs and Land Readjustment on Newly-Built Residential Land Prices’, This Study mainly assumes that land readjustment can reduce transaction costs in terms of the spatial externalities from developers’ behavior and the institution of land readjustment. This effect will be reflected in the newly-built residential land prices. To test this hypothesis, I apply spatial econometric analysis and geographic information systems based on the Box-Cox hedonic pricing model. The data are selected from newly-built residence from between 1991, 1996 and 2001. Empirically, I find that the spatial error Box-Cox model is appropriate for engaging in spatial externalities analysis. This is because the results show that land readjustment gives rise to positive spatial externalities on newly-built residential land prices and the marginal price of residential land in areas where land readjustment takes place is also positive. The effects of developers’ interactions give rise to positive spatial externalities but these change to negative spatial externalities in relation to newly-built residential land prices in the long term. It is concluded that, land readjustment as implemented by the government really does contribute to reducing uncertainty in the land development process, and also reduces transaction costs between construction practitioners and landlords.

本研究以Wendy Gordon教授三要件市場失靈理論為核心-即(一) 市場失靈的狀況現實存在，（二）支持被告的使用模式對社會而言利多於弊，以及（三）允許合理使用抗辯不會對於創作者的創作誘因產生實質損害-試圖以美國實務判決為藍本勾勒出可能的觀察構面與命題，並以此為基準以音樂產業為例推演可能的管理意涵，最後從制度面的角度檢討現行合理使用判決所出現的問題與可能的解決方式，研究結果及建議分述如下： 觀察構面與命題的發展 本研究以美國近二十年來重要合理使用判決為藍本，並將市場失靈區分為交易成本過高與正向外部性兩種類型，歸納出以下命題及觀察構面： 命題一：與著作權利人進行交易的交易成本越高，主張合理使用成功的機會越高。 H1:系爭著作物在使用當時若屬於無法尋得權利人的孤兒著作，成功主張合理使用的機會較高。 H2:系爭著作物若有著作權仲介團體代理或有交易成本低廉的授權平台，成功主張合理使用的機會較低。 H3:系爭著作物若有著作權管理資訊，成功主張合理使用的機會較低。 命題二： 被告利用型態對社會創造的正向外部性越高，成功主張合理使用的機會越高。 H4:系爭著作的利用方式若屬於對原著作物的諷刺或批評，成功主張合理使用的機會較高。 H5: 使用者使用的模式若能減少資訊流通障礙而非單純販售著作重製物圖利，成功主張合理使用機會較高。 市場失靈對著作權人的管理意涵 就正向外部性導致的市場失靈而言，當被告的利用模式產生的正向外部性越大，著作權授權交易無法完成對整體社會造成的效率損失越大，依據市場失靈理論的討論架構，法院支持被告合理使用主張的機會也越大。此時，權利人最佳的管理策略應該是更積極進行授權，並避免過度利用優勢談判地位抬高交易條件，最後導致授權交易無法進行。面對交易成本過高可能導致市場失靈，對權利人來說最佳的管理策略應該是使用各種可能的機制創造最有效率的授權市場，當市場的運行越具效率，交易成本越低，市場失靈的風險越低，法院支持利用人合理使用抗辯的機會也越低。管見以為，授權著作權仲介團體進行授權交易、自建授權平台、創新商業模式或與主流流通平台建立策略聯盟，是對權利人來說降低交易成本最佳的管理策略之一。 此外，從音樂與出版產業的發展歷程可以發現技術、法律與管理是彼此互為影響的構面，對於企業經營者來說，應有任何一項變動即牽一髮而動全身的敏銳，假定任何一項要素恆久不變或外生於其他兩構面的變化，均可能成為策略錯誤的原因。以上發現可歸納為三個命題： 命題三:著作利用產生的正向外部性越大，權利人越應該積極進行授權，避免過度利用優勢談判地位抬高交易條件，導致授權交易無法進行。 命題四: 權利人應積極建立便於使用的授權機制，降低交易成本及合理使用的風險。 命題五：技術、法律與管理模式三構面互相影響，任何一項要素變動，都可能驅動其他兩項要素的變化。 現行合理使用判決的問題與制度面的修正芻議 若市場失靈理論及本研究提出的命題與觀察構面被接受，本研究建議現行著作權法第六十五條第二項規定可修正如下： 著作之利用是否合於第四十四條至第六十三條規定或其他合理使用之情形，應審酌一切情狀，尤應注意下列事項，以為判斷之基準： 「一 利用之目的及性質，包括係為商業目的或非營利教育目的。 二 著作之性質。 三 所利用之質量及其在整個著作所占之比例。 四 利用結果對著作潛在市場與現在價值之影響。 五 利用結果產生的公共利益。 六 覓得著作權人以及取得授權的難易與成本。」 現行法下，法院在合理使用與判斷被告需賠償權利人全額損害兩者間沒有其他選擇，若法院考量正向外部性的存在後，認為被告的利用方式對整體社會有極大利益，並將正向外部性所帶來的好處納入最適授權金的計算，其數額或許將遠低於客觀上填補權利人所失利益與所受損害的價額，判定被告需賠償全額損害有悖於分配效率的要求。反面言之，若被告的利用嚴重損及該著作物最主要的經濟收益，判定合理使用對權利人又將衝擊過大。此時，法院將被迫在合理使用與全額損害賠償間進行二擇一的選擇。為給予法院更多救濟市場失靈的彈性，本研究建議在制度上應盡可能補足全額損害賠償與合理使用光譜的空缺，在立法上似可考慮將現行著作權法第六十五條第三項、第四項規定移至第四項與第五項，並增訂第三項條文如下：著作之利用雖不符合第四十四條至第六十三條規定或其他合理使用情形，但法院審酌一切情狀，尤應注意前項所列事項，得酌減損害賠償金額，若行為人利用方式未達商業規模者，並得免除或酌減行為人違反本法所需負擔的刑事責任。 嚴重市場失靈發生時，因為著作權人的市場利益未受影響，應支持著作利用人合理使用的主張。本此，對於特定類型的嚴重市場失靈，著作權法可以明定為合理使用。本研究建議現行著作權法第五十一條修正如下：「著作於個人或家庭或其他類似範圍內之使用為目的者，若該使用不影響著作權人可合理預期的市場利益者，不構成對著作財產權的侵害。」 / Along with the enlargement of the scope and duration of copyright, it is generally believed that barriers to continual innovation and knowledge distribution also increase. How to leverage fair use to best preserve public interest thus becomes a very important issue. Nevertheless, fair use is called the most unpredictable and difficult problem in copyright law. Using the market failure theory proposed by Wendy Gordon to explain the scope of fair use, this research collects landmark U.S. fair use cases as the basis to develop propositions that help the judiciary to deal with fair use cases, makes management suggestions to copyright holders and proposes several legal reforms to the current Taiwanese fair use law . This study suggests that a defendant’s chance to prevail on his fair use defense increase as the transaction cost increases. For illustration, if the work in dispute is an orphan work, a defendant has a stronger fair use case because the transaction cost he has to incur to find the copyright owner and reach a deal is higher. Similarly, if the work in dispute carries with it clear copyright management information, is managed by efficient intermediaries or placed on an efficient transaction platform, a defendant has a weaker fair use case. The reseach also argues that the higher the positive externality brought by a defendant’s uses, the stronger fair use case he has. If a defendant uses the work in dispute to create a parody or to facilitate information exchange, the defendant has a stronger fair use case due to the positive externality he creates. As managerial suggestions to copyright owners, this study maintains that copyright owners should make their best efforts to reduce transaction costs in connection with licensing and copyright transfers and actively engage in licensing to uses creating significant positive externalities. This helps reduce the possibility that potential users rely on fair use and end up paying nothing to copyright owners. To reduce transaction cost, copyright owners may consider building a licensing platform themselves, using intermediaries or forming strategic alliances with primary sale channels. As for positive externalities, it is suggested that copyright owners pay attention to the public interests recognized in the copyright law. This study also finds that technology breakthroughs, legal reshuffles and innovations in business model and management are inter-related. It is simply a mistake to regard one of the three constructs as being static if another construct has been changing. This research also proposes the following amendments to the current fair use law in Taiwan. As a matter of practice, Taiwanese judges rarely consider factors outside the four listed factors in Article 65(2) of the Taiwanese Copyright Law, even though the statute gives them wide discretion to consider other factors. To encourage the Taiwanese judiciary to apply the market failure theory in fair use cases, it is suggested that “the cost at which a user must incur to obtain a license” be added as the fifth factor and that“the public interests a user creates” be added as the sixth factor in Section 65(2). Secondly, to give judges more flexibility in close cases, it is suggested that judges should be given discretion to reduce the damages a defendant has to compensate copyright holders and discretion to reduce or release him from his criminal duty, even if the criteria for fair use are not fully satisfied. Lastly, if serious market failure occurs, it will be Pareto superior to allow defendants to use the work in dispute free of charge. It is generally recognized that most types of personal uses fall within the scope of serious market failure. This study thus proposes that Article 51 of the Taiwanese Copyright Law be amended to the effect that personal or familial uses are allowed so long as the profits copyright holders can reasonably expect are not adversely affected.

本篇論文試圖藉由比較一個產業生產技術為固定規模報酬的經濟體系，如何因外部因素的影響而改變其動態調整方式。在此考慮的外部因素有資本移動的開放與否、生產要素的外部性、及政府對要素報酬的課稅。考慮各種因素後，所得出的結論為在生產函數為Cobb-Douglas型式且產業生產技術為固定規模報酬的情況下： 1.多重均衡路徑在資本帳封閉時期唯有效用函數為特例時才能使其出現，但在資本自由移動時期對於所有的效用函數型態皆會成立。 2.其他條件保持不變之下，單獨存在生產要素外部性或是對要素所得課稅皆可使體系存在多重均衡路徑。 3.其他條件保持不變之下，若生產要素外部性與要素所得稅皆同時存在時，可使體系存在唯一的穩定馬鞍路徑。

本論文包含兩篇獨立但主旨相關的文章， 目的均在探討融資契約與廠商投資的關聯，以分析融資契約的實質效果。第一篇文章「股價資訊外部性與新投資之採行」研究權益證券(股票)集訊、揭訊功能的實質效益，我們由股價資訊公開所產生的外部效果，分析股價資訊效率性與廠商投資效率之間的關聯。在1.眾多異質廠商，2.投資具實質選擇權(real options)特性的假設下，內生化廠商與股市交易者的資訊取得決策，發現1. 均衡時廠商的投資與資訊取得決策取決於廠商技術水準與股價效率性之高低：高股價效率性時，無廠商取得新資訊，皆根據股價判斷投資，低股價效率性時，僅較低技術廠商根據股價資訊投資。2. 股價有額外的資訊揭露效果：由於廠商僅能獲得新資訊的部份效益，且廠商利用資訊有機會成本，將投資證券化可提高新資訊被揭露的可能性，使得資訊可被充份利用，提昇投資效率。3. 股價資訊可提增投資效率，增加廠商期望報酬，但當體系平均技術水準落後，新資訊的實質效益低落時，股價資訊公開的外部淨效益亦趨薄弱，故經濟發展初期，股市資訊公開的外部效益相對不重要。 第二篇文章「抵押品、財務槓桿與廠商投資」研究借貸契約中，抵押品舒緩借貸限制的作用，及其可能產生的實質效果。我們採用Williamson(1986,1987)的狀態確認成本模型(costly state verification model)，在該訊息不對稱模型，廠商向外融資面臨借貸限制，僅較高自有資金廠商可獲融資。當借貸市場資金相當寬鬆，資金供給恆大於資金需求，資金成本(無風險利率)為一由模型外因素所決定的外生參數時，抵押融資不影響資金成本，此時抵押品具有舒緩借貸限制的作用，體系財務槓桿提高，期望查帳成本下降，投資的期望淨產出增加。若資金相對緊俏，無風險利率須由借貸市場均衡所內生決定時，長期而言，財務槓桿僅受體系資金寬鬆程度的影響，短期間抵押融資雖能提高財務槓桿，但隨槓桿之提高，資金需求增加，無風險利率上揚，在新的均衡，較低自有資金廠商投資的期望報酬下降，借貸利率上漲，反而增加其應負債務，資產狀況惡化，此即本文所欲突顯之抵押融資的潛在成本。 第一章 緒論 3 第一節 研究動機 3 第二節 研究內容與架構 5 第二章 文獻回顧 7 第一節 融資契約的功能 7 第二節 金融結構與實質經濟活動 13 第三節 股價資訊與廠商投資 18 第四節 抵押品與廠商投資 22 第三章 股價資訊外部性與新投資之採行 27 第一節 前言 27 第二節 基本模型 29 第三節 期中股市均衡與股價效率性 35 第四節 股價資訊外部效益 41 第五節 小結 46 附 錄 47 第四章 抵押品、財務槓桿與廠商投資 53 第一節 前言 53 第二節 基本模型 55 第三節 抵押融資模型-資金寬鬆時的抵押品效果 62 第四節 抵押融資模型-資金緊俏時的抵押品效果 66 第五節 小結 70 第五章 結論 72 第一節 研究限制 72 第二節 未來研究方向 77 參考文獻 79 / This dissertation collects two separate but related papers, both study the channel through which financing contracts can affect firms' investment decisions and the corresponding real effects. The first paper " Informational Externality of Stock Prices and Firms' New Investment Decisions" analyzes what real benefits the information acquisition and signaling function of stocks can produce. From the viewpoint of informational externality, stock prices may disclose some valuable information beneficial to firms' investment decisions. Under the assumptions of " heterogeneous technology" and "new investment as a real option", this paper finds 1. Firms' investment and information acquisition decisions are determined both by their own technology level and stock prices efficiency. With high price efficiency, no firms acquire information directly, all make investment decisions based on stock prices. With low price efficiency, most firms acquire information directly, only few low-tech firms make decisions according to stock prices. 2. Stock prices have additional signaling effect. Firms can ony get half benefits of new information, besides they have opportunity costs in using information. As a result, stock prices can enhance the possibility of information disclosure, improving investment efficiency. 3. When the economy is underdeveloped and the real benefit of new information is small, the net benefit produced by informational externality will be tiny. The stock prices externality effect is thus comparatively unimportant at the beginning stage of economy. The second paper " Collateral, Financial Leverage and Firms' Investment"analyzes the constraints-smoothing function of collateral and its real effects. By adopting Williamson's costly state verification model(1986,1987), I find that with this specific asymmetric information structure, there are financing constraints in capital markets, only firms whose own capital inputs are higher above some level can get borrowed capital. The question is " Can offering collateral smooth this kind of financing constraints?" In markets with abundant capital where capital supply always exceeds demand, capital cost(riskless interest rate)will be an exdogenously-determined parameter which won't be affected by collateral financing. In this scenario, collateral can smooth financing constraints, increase financial leverage and improve the net expected return of investment. On the contrary, if capital is not so abnudant that the capital cost should be determined endogenously by capital market equilibrium, then in the long run this economy's financial leverage depends only on the relative abundance of capital. Though collateral financing can increase financial leverage in the short run, as capital demand increases, capital cost will also increase. This will offset the initial smoothing effect of collateral. After full adjustment of capital cost, at the new equilibrium the financial leverage remains unchanged. However, the expected return of firms with lower own capital inputs become smaller, and their borrowing rates become higher which mean they have heavier debt burden and less net worth at the new equilibrium.