過去許多學術文獻針對租稅優惠吸引投資之效果進行實證分析，但實證結論並不一致。我國自1950年即開始實施一連串的租稅獎勵政策，時至今日，租稅減免仍是我國政府推動重大經濟政策慣用的誘因手段。為探討了解臺灣實施租稅優惠措施對投資變化之影響，本研究針對我國自民國50年代後期以來涉及租稅減免之相關法令進行整理，另為了充分量化這些租稅優惠措施，則參考國外相關實證文獻作法，建構了兩項租稅誘因指標作為虛擬變數，來追蹤自民國61年以來我國不同階段之減免稅狀態，並作為虛擬變數納入後續實證模型分析。 本研究利用相關變數之時間序列資料來探討租稅優惠對我國外人直接投資與國內私人投資之互動變化關係。研究步驟有三，首先，針對個別變數進行單根檢定，藉以確認變數的屬性，了解時間序列資料是否為衡定後，再利用Johansen共整合檢定法來估計和檢定多個變數，確認各變數間是否存在共整合關係後，以誤差修正模型來說明各變數間關係與整個變數脫離均衡關係後之動態調整情形。 實證結果顯示，就長期趨勢而言，我國實施之租稅優惠措施對吸引外人直接投資呈現負向且顯著之不良影響，另長期而言，租稅優惠誘因對刺激我國國內投資之變化確有顯著且正面助益，但影響效果之幅度不大。因此，本研究建議政府與其提供效果不明確之租稅誘因，不如致力於針對國家自身不完善的基礎建設或不穩定的總體經濟環境進行改善。 / Tax incentives have been in existence in Taiwan since 1950, and they are still very much on the agenda of the government. There is no agreement about the efficacy of incentives. Indeed there have been doubts about whether incentives have any effect on the economy since the 1950s. This has made some economists wonder why incentives are so popular despite the fact that their effects are either slight or unknow. This study conducts an empirical investigation of the impact of tax incentives on investment in Taiwan. We constructed two indexs of tax incentives which track the different types of incentives embarked upon by the government, and these indexes are then included in both foreign direct investment and private investment equations. Our testing procedure involves three steps. The first step involves tasting for the properties of the variables by conducting unit root teste. The second step involves testing for the long-run relationship between the variables using Johansen cointegration tests. And the third step involves estimating the long-run parameters and associated loading factors. The empirical results shows a significant negative impact of tax incentives on FDI, and a significant positive impact of tax incentives on private investment but the impact is slight. We suggest that rather than focusing on tax incentives, the country should concentrate on removing the factors that discourage investors such as poor infrastructural and institutions or macroeconomic instability.

本文使用Pesaran,Schuermann and Weiner(2004)提出的全球化向量自我迴歸模型(Global Vector Autoregression Model, GVAR)對房地產市場進行分析。 我們考慮 1994Q1 至 2011Q2 的資料，納入美國、中國、日本及台灣，每個國家各七個變數及一個國際外生變數，使用衝擊反應函數去衡量總體經濟變數與房市之間的連動性，以及房地產市場在國際之間的外溢效果。 本文針對美國實質房價衝擊、美國實質產出衝擊及台灣實質產出衝擊做探討，所得到的實證結果主要可歸納為三點:首先是美國房市下跌會傳遞至其它經濟面，如實質產出、通膨率、利率市場，影響會在第四季時恢復平穩，但多存在著長期影響。其二為當美國景氣衰退時，美國利率市場的反應較為迅速，中國、日本及台灣平均會落後一到兩季才會反應，且美國利率的反應幅度會較大。最後一點為跨國之間的房地產市場雖然沒有顯著的直接連動關係，但是會透過不同管道間接影響他國的經濟市場，其中一個管道可能是經由財富效果傳導至實質經濟面，造成消費需求上的衝擊，進而影響兩國的貿易平衡，另一方面則可能會影響各國央行的貨幣政策，透過金融管道對跨國間的投資產生影響。 關鍵詞:全球化向量自我迴歸模型、共整合、誤差修正模型、房地產市場、財富效果。

本文之目的在於分析台灣與中國雙邊貿易之主要決定因素，並深入探討造成台灣對中國長期出現大量順差的主要原因。本文之實證模型與過去文獻主要差異在於分別就進出口供給與需求建立聯立方程式，推導成縮減式，分析進出口供需的相互影響。在台灣出口供給方面，本文考慮了國內投入、進口中間投入、台灣外人直接投資(FDI)及研發創新等因素。在台灣進口需求方面，除了考慮實質所得、雙邊匯率，本文也考慮了第三國匯率及雙向FDI之影響。 本文實證分析採用自1996年1月至2009年12月期間月資料。實證結果顯示雙邊實質所得、台灣對中國直接投資與台灣研發創新的確皆造成台灣對中國進出口之增加。然而，各國對台灣直接投資，卻造成台灣對中國進出口的減少。至於實質匯率的結果，在台灣對中國之出口方面，當新台幣相對於人民幣貶值，確實造成對中國出口增加。在中國市場，第三國價格相對中國價格上揚，造成台灣對中國出口有負向影響，此顯示台灣出口財與第三國出口財為互補關係。在台灣自中國之進口方面，當新台幣相對於人民幣貶值，的確造成自中國進口減少。在台灣市場，第三國價格相對於台灣價格上揚，造成台灣自中國進口有正向影響，表中國出口財與第三國出口財為替代關係。此外，本文發現，進口中間投入的相對價格上揚，將造成台灣自中國進口減少。 總而言之，本文研究結果顯示，除了實質所得以及雙邊匯率之外，第三國匯率、雙向FDI以及研發在兩岸進出口貿易上也扮演相當重要角色。此結果有助於瞭解台灣對中國持續順差之背後原因。 / The objective of this study is to analyze the main determinants of bilateral trade across the Taiwan Straits with a view toward exploring the causes of the Taiwan’s persistent large trade surplus with China. Our empirical model differs from most previous studies in the following aspects: we construct a system of equations to examine the demand-supply relationship ; on the supply side, the effects of inward FDI, the cost of intermediate imports on Taiwan’s production and R&D innovation are considered ; on the demand side, in additional to bilateral real exchange rates and real income, this paper also considers the indirect effects of exchange rate of third countries and bilateral FDI. The data covering January, 1996 to December, 2009 are used in our empirical analysis. The empirical evidence indicates that the bilateral real income, Taiwan’s real direct investment to China and R&D innovation have positive effects on Taiwan’s exports towards and imports from China, however, the inward FDI to Taiwan presents negative effects. As for real exchange rate, it appears that Taiwan’s export to China would increase along with the real depreciation of the NTD against the RMB. In addition, the rising relative price of the third country against the price of China would result in a negative effect of Taiwan’s export to China, representing that the goods of Taiwan and the third country are complements. On the other hand, Taiwan’s import from China would decrease along with the real depreciation of the NTD against the RMB. In addition, the rising relative price of the third country against the price of Taiwan would bring about a positive effect of Taiwan’s import from China. This reveals that the goods of China and the third country are substitutes. Moreover, a negative effect on the import of Taiwan from China appears when the cost of intermediate imports of Taiwan increases. In sum, this study illustrates that, in addition to real income and bilateral exchange rates, the exchange rates of third countries, FDI inflows and outflows and innovation have also played an important role in determining bilateral trade across the Taiwan Straits. It will help understand the driving forces behind Taiwan’s persistent trade surplus against China.

本研究主要依據國內房地產市場的特性，以生產時間落差、預期景氣與宣告效果、以及總體經濟等三個項目為主軸，針對房地產市場的景氣現象進行探討。首先，由生產階段的生產時間落差為出發點，探討房地產景氣與政府政策衝擊對生產時間落差的影響。再來，探討房地產次市場間的互動關係，瞭解預期景氣與宣告效果對不同房地產次市場景氣的影響。最後，探討總體經濟對房地產景氣的影響。在上述理念體系下，本研究進行各項理論的推演與實證分析，所得結論說明如下： 一、房地產景氣對生產時間影響部份 本文以建照面積與使照面積數量之波動關係，分析房地產景氣對生產時間落差之影響，結果發現使照面積與建照面積間存在穩定的長期關係，但建照可能因景氣不佳而取消，此使得長期建照面積大於使照面積，且建商會視房地產景氣的變動而調整興建速度。當房地產市場景氣時，興建速度較快，不景氣時興建速度較慢，使得生產時間落差會因房地產景氣變動而有所不同。另外，建照面積與使照面積間的關係亦會因政府相關政策的改變而產生衝擊，進而改變生產時間落差的長短。 由此觀之，國內房地產市場應較無預售制度的國家有較佳的市場調整機制，不過國內房地產景氣的波動卻依然劇烈，其原因可能在於政府決策與執行有相當長的時間落差，往往造成介入市場的時機不恰當，使得政府政策不但未能發揮反景氣循環的功能，反而成為助漲、助跌的促媒。另外，建築投資業缺乏健全管理亦是可能的原因之一，造成市場良莠不齊，在未經協調而彼此競爭下，往往錯誤評估個別預期銷售額而惡性競爭所造成。 二、預期景氣與宣告效果對房地產景氣影響部份 透過不同次市場的連結，本文發現當政府政策提前宣告時，將會有明顯的宣告效果產生，使得建商雖面對節節高昇的空屋率，依然大量搶建，但建照面積的增加則會促使房價與租金下跌。當前房地產市場的長期不景氣，政府未充分掌握房地產市場的景氣波動，並審慎評估政策的可能衝擊可說是問題的關鍵。此也意味，若政府日後真有必要再對房地產市場實施類似管制措施時，實應於事前進行謹慎的評估，並慎選實施的時機。 其次，市場參與者的預期在市場運作過程中扮演相當重要的角色，對於不同次市場景氣之影響亦不相同，當預期資本利得愈高時，會使房價上漲，但租金卻會減少，因為屋主願意以相對較低的租金將房屋出租，並由長期的資本利得中獲得補償，此可解釋為何國內長期租金與房價比長期偏低的現象。不過，近年來房地產市場面臨相當長時間的不景氣，加以921大地震對於國人傳統「有土斯有財」的理財觀念應有相當程度的衝擊，在預期資本利得相當微薄、甚至為負的情況下，未來租金可能回到較合理的水準。 三、總體經濟度房地產景氣之影響部份 本文檢視總體經濟變數對不同地區房地產景氣的影響，發現不論台北市或台北縣的預售屋房價與貨幣供給、空屋數、建照面積等變數均具有長期均衡關係存在，表示房地產景氣會因總體經濟變數與房地產市場本身供需變化而調整，但在考量結構變遷下，預售屋房價與建照面積間之關係已有所改變，意味未來在分析兩者間之關係時必須更加慎重。 其次，空屋數對於預售屋房價的影響彈性相對大於貨幣供給以及建照面積的影響，且相關變數對於台北市預售屋房價的影響相對大於台北縣，但台北縣預售屋房價消弭均衡誤差的速度較台北市為快，此乃因台北市住宅供給與需求彈性相對較小，當其他影響變數發生變動時，其預售屋房價受到的影響相對較大，故一旦偏離均衡時，必須花費較長的時間來調整。此結果亦顯示，要解決房地產市場長期的不景氣，從消化空餘屋著手最為有效。另外，不論台北市或台北縣預售屋房價與其他變數間的短期領先或落後關係並不明顯，此可能是因房地產市場自1986-1990年這一波房地產景氣後，已產生結構性變遷所造成。 / This dissertation consisted of three relative essays about real estate cycles. The first paper explores the influence of the real estate cycles on construction lags by analyzing the fluctuations of total floor areas of building permits and usage permits as a reflection of construction lags. Results support that a long-run equilibrium is existing between them; however, building permits may be dropped during a downswing market. In addition, the duration of construction lags is affected by changes in the real estate cycles and by the impacts of policies.　During a time of strong market, the duration of construction lags is cut shorter and is extended when the market is depressed. The second paper presents a simultaneous equation to examine how expectation of market participants and preannouncement of zoning control influence real estate cycles through three housing submarkets: rental market, sales market, and new construction market. One interesting finding is that, before the government announced a change in its zoning policy, builders constructed at maximum capacity despite fact that the real estate market was already depressed. Such construction only worsens the real estate market condition and extends the duration of depressed period. Another interesting finding is that the expected real estate cycles have different effects on rent and housing price. Although high capital gain expectations drive up the housing price, rent continues to decrease. A high vacancy rate, although decreasing the housing price, has little influence on construction starts. The last paper examines the long-term relationships between real estate cycles and macroeconomic variables by using cointegration test and error correction model. I found that both housing price of Taipei City and Taipei County do have long-term relationships with money supply, vacant houses, and new construction, but when considering market structure change, the relationship between housing price and new construction will change. I also found that the vacant houses have more influence on housing price than that of money supply and new construction, and the influences of these three variables on housing price are more sensitive in Taipei City than Taipei County. These results reflect the market structure of Taipei City and Taipei County is different, and the importance to solve vacant houses problem. Another surprise finding is that short-term lead or lag relationships among these variables are not significant. One possible reason is the structure change of real estate market after 1990.

A considerable body of theoretical and empirical literature has evaluated the credit channel of monetary transmission. This paper sets up an open-economy model under floating exchange rates with imperfect international capital mobility based on the Bernanke and Blinder model (1988). Employing our model, we show that a change in money supply has different impacts on the economy in many cases compared to the previous literature. The exchange rate puzzle may occur and when the exchange rate puzzle appears, the Fleming proposition is violated. Besides, by means of a cointegration analysis, we empirically verify the particular case of the exchange rate puzzle with the monthly data from May 1984 to January 2005 in Taiwan. Therefore, our empirical evidences can be matched with our theoretical derivations successfully.

本篇論文檢驗聯準會模型在六個亞洲市場：中國大陸、印度、馬來西亞、新加坡、台灣和泰國是否成立。我們首先檢驗共整合檢定來觀察變數之間長期的關係；另外，針對線性的指標模型，我們則檢測其是否具有非線性的門檻自回歸情形。實證結果顯示，於共整合檢定下，六個國家的股票價格、股票報酬和十年期債券殖利率具有長期共整合關係；而在非線性的TAR模型配適下，其解釋能力優於線性的AR模型。 / This paper studies the Fed Model in six Asia countries, China, India, Malaysia, Singapore, Taiwan, and Thailand. We examine the cointegraiton test for the long-run relationship and build a nonlinear threshold autoregressive model (TAR) between the long -term government bond yield, the stock index and the earning s index. Our empirical results show that such a long-run relationship indeed exists for those countries. In addition, the explanatory power of TAR model is better than linear AR model.

2006年，中國大陸國務院將天津定位為北方經濟中心，天津的金融發展加速，金融機構家數及存貸款餘額不斷增加。當金融市場完善，有助降低交易成本使資金的融通管道暢通，居民可透過金融市場融通資金來從事更多消費，因此本研究目的為探討金融發展是否也是影響居民消費及恩格爾係數的因素。 本研究以金融深化程度及銀行效率指標兩項金融發展指標，來衡量天津的金融發展程度。實證結果顯示，短期下實質人均儲蓄、都市化程度對居民消費有負向影響；物價指數、實質人均GDP、實質人均可支配年收入與金融深化程度對居民消費有正向影響，銀行效率則對居民消費無影響；而長期下，實質人均儲蓄與都市化程度對消費有負向影響，物價指數、實質人均可支配年收入及銀行效率對消費有正向影響，金融深化程度及實質人均GDP則與居民消費無影響。 在恩格爾係數方面，短期下依賴比、實質人均可支配年收入對居民消費有負向影響；金融深化程度、都市化程度對居民消費有正向影響。長期下金融深化程度對恩格爾係數無影響，但銀行效率卻對恩格爾係數有正向影響。依賴比與實質人均可支配年收入呈負向關係，但金融發展程度與銀行效率對居民消費確實有促進作用。最後本研究建議天津政府除了積極促進消費的同時，也應致力於提高居民實質人均可支配年收入水準及提高銀行資金運用效率。 / In 2006, The State Council in China set Tianjin as the economic center in the northway of China., the financial development in Tianjin has speeded up. The numbers of the financial institutions and the balance of deposit and loan have risen up. When the financial market becomes mature that will reduce the transaction cost and consumers will have more financial accesses and opportunities to finance. Therefore, this paper is aimed to discuss whether the financial development is a factor that influence the consumption and Engel’s coefficient or not. This paper used two financial development indicators to measure the financial development in Tianjin- Financial irrelevant ratio (FIR) ,and bank efficiency. The empirical results shows that real personal savings, and urbanization have negative influence on consumption whereas the price index, real GDP per capita, real personal disposal income and financial irrelevant ratio have positive influence on consumption and banking efficiency has no influence on consumption in the short run. In the long run, however, real personal savings and urbanization have negative influence on consumption but price index, real personal disposal income and banking efficiency have the positive influence on consumption. But financial irrelevant ratio and real GDP per capita have no influence on consumption. In the Engel’s coefficient aspect, dependency ratio and real personal disposal income have negative influence. The Financial irrelevant ratio, urbanization and food price index have positive influence in the short run. In the long run, financial irrelevant ratio has no significant influence on Engel’s coefficient but banking efficiency has positive influence on consumption. Dependency ratio and real personal disposal income have negative influence on consumption. Therefore, this paper finds out that the FIR and the bank efficiency have pushed up the consumption in the short run and long run respectively. This paper recommends that the Tianjin’s government should not only to push up the consumption but also should be dedicated to raise up the personal disposal income and banking efficiency.

配對交易策略為一被廣為使用的交易策略，其特性為使用數個關聯性高的資產同時建立多空部位，藉此消除大部分的市場風險，賺取與市場趨勢無關聯性的報酬；本研究欲探討共整合法配對交易策略應用於兩類標的資產上之可行性及其功效:台灣證券交易所掛牌的6檔陸股ETF、以及COMEX黃金期貨與CME日幣期貨之組合。本研究使用之配對交易策略應用於6檔陸股ETF大部分參數設定下可獲得正報酬，獲利性卻不如預期，且共整合性質較佳之配對無法保證其交易績效亦較佳；COMEX黃金期貨及CME日幣期貨雖相對共整合性質不佳，仍以原策略測試可獲得較優秀的績效，此結果顯示共整合法配對交易策略於兩類資產上可行性皆不高，而配對交易策略於黃金、日幣組合上可能仍有其功效，尚須以不同方法進行驗證。 / Pairs trading strategy is one kind of market neutral strategy which take both long and short positions in two or more highly correlated assets. By doing this pairs trading strategy can eliminate market risk and make profits which are not correlated with market trends. This paper aims to figure out if pairs trading strategy work well on China ETFs listed in TWSE and the COMEX gold-CME yen future pair. We use the cointegration approach to test and simulate trading performance on the securities mentioned. The result shows that pairs trading strategy profit on China ETFs under most of the parameters, but the returns are insufficient. Furthermore, good cointegration property in the input periods can’t guarantee better performances in the outputs periods. For COMEX gold future and CME yen future, cointegration property in the input periods are worse than China ETFs, but using the same strategy we find a more profitable outcome. The empirical result indicate that pairs trading strategy might still work on gold and yen, but the cointegration approach is not suitable for these two groups of assets.

90年代末東亞金融危機造成多國貨幣大幅貶值，銀行紛紛倒閉。基本上金融危機可分為通貨危機(Currency Crisis)與銀行危機(Banking Crisis)；通貨危機是指當年中任一季名目匯率貶值超過25%，且貶值幅度比前一季超過10個百分點。諸多實證文獻顯示，高估一國匯率為其通貨崩潰之先驅；又由於近年來新興國家快速開放資本市場，以致於成為危機之導火線。為分析此一現象，本文首先編製金融帳權數之新台幣實質有效匯率指數，並將東亞之台灣、印尼、韓國、菲律賓、泰國等五國之匯率、相對物價（各國與美國物價）、金融帳餘額等變數做共整合關係檢定，觀察三個變數的長期均衡關係，再將誤差項加入模型中，建構向量誤差模型。實證結果發現，金融帳與相對物價對匯率有顯著之影響力。 / The 1997 East Asian Crises had made exchange rate depreciations and bank bankruptcies. Broadly speaking, it can be divided into currency crisis and banking crisis. Nominal exchange rate of any season in a year, which is depreciated over 25% and 10% than last season, is called a currency crisis. Lots of papers demonstrate that overvaluation is a precursor of a currency crash. Furthermore, developing countries have opened capital markets so rapidly that it became the tinderbox of crises. To analyze the phenomenon, this thesis first compile Taiwan’s financial weighted real effective exchange rate index, then examine exchange rates, relative prices (compare to American consumer price index), and net financial account of Taiwan, Indonesia, Korea, Philippine, and Thailand with cointegrated test to identify the long run equilibrium relationships between variables; then adding error terms into models to estimates vector error correction model (VECM). The empirical results show that financial account and relative price influence exchange rate significantly.

近年來由於亞洲金融風暴的肆虐，產生經濟不景氣，使得失業的問題逐漸受到社會所關注，本論文企圖以三個時間序列方法：1.單變量ARIMA模型；2.轉換函數(TF)模型；3.向量自迴歸(VAR)模型來建立台灣地區的失業率時間序列預測模型。資料則是利用台灣地區民國75年1月至民國87年12月的失業率月資料作實證預測分析，為了知道資料是否來自時間趨勢模型，測試是否經過差分消掉一部份的記憶會發生預測的誤差，所以先以多步(multi-step)預測和一步(one-step)預測的方法計算出民國88年1月至88年12月預測值，而預測評估準則則採用(1)MAPE、RMSPE、MPE及泰爾不等係數(THEIL)；(2)變化方向誤差與趨勢變化誤差兩大方向來做預測比較。最後將算出的12期預測值與行政院主計處整體統計資料庫中所得到的失業率實際值利用預測評估準則做比較，結果發現一步預測法較多步預測法準確；而向量自迴歸模型(VAR)在大部份的預測期數上有較小的MAPE、RMSPE、MPE及THEIL值，因為此VAR模型考慮了在變數之間的共整合現象，有助於模型的預測，所以有較好預測的能力；反而是較複雜的ARIMA模型及轉換模型預測能力稍差一點。 / In this thesis, we plan to construct three time series models to forecast the Taiwan unemployment Rate. These time series models are ARIMA model、transfer function (TF) model and Vector Autoregressive (VAR) model. The data set consists of monthly observations for the period 75:1-87:12 for unemployment rate. We want to know if the data came from time trend model. First, we use multi-step forecasting and one-step forecasting to calculate 12 forecasted values from 88:01-88:12. Then We compare the prediction performance of these two methods by using：(1) MAPE、RMSPE、MPE and Theil’s Inequality Coefficient (THEIL)；(2) Direction of Change Error and trend Change Error etc. It is found that one-step forecasting is more correct than multi-step forecasting and the forecasting performance of VAR model is improved by explicitly taking account of cointegration between the variables in the model，so VAR model has lower MAPE、RMSPE、MPE and THEIL for most horizons. However，the more parsimonious ARIMA and transfer function models have higher MAPE、RMSPE、MPE for most horizons.