Made available in DSpace on 2016-06-02T19:50:27Z (GMT). No. of bitstreams: 1 6835.pdf: 2522084 bytes, checksum: fb3776d933420195d287adba59acf12a (MD5) Previous issue date: 2015-06-29 / Universidade Federal de Minas Gerais / The aim of this study was to measure the technical and economic efficiency differentials in citrus production among farms in the State of São Paulo, Brazil, as well as to identify the determining factors of these differentials. In addition, it was also an objective to investigate the main characteristics of citrus production technology (partial elasticities, returns of scale, economies of scale and the elasticities of substitution of production factors). Primary data was collected from a representative random sample of 98 rural properties. Stochastic production, cost and profit frontier models were used, assuming the Cobb-Douglas and the translog functional forms. In order to identify the factors determining the efficiency differentials, the single-stage stochastic model proposed by Battese and Coelli (1995) was adopted, and a set of hypotheses were tested, based on different standpoints of economic theory (NEI, ECT, theories of human capital, theories of production management, etc) as well as on the characteristics of citrus production. The results of the study showed the existence of technical inefficiency (28.4% on average), as well as inefficiency of cost (30.6% on average), and of profits (55.3 on average) among the farms. The translog production and cost frontiers indicated the existence of an initial zone with strong growing returns/economies of scale which go into exhaustion until decreasing returns begin to occur/diseconomies of scale. The optimum scale, calculated from the parameters estimated in the translog production frontier, showed to be between 70,000-100,000 boxes, while the optimal scale for the translog cost frontier showed to be between 130,000-300,000 boxes. One of the explanations for this difference is the lower prices for fertilizers and labor paid by large farmers, which is a source of pecuniary scale economy. As for the factors determining the differential in technical, cost, and profit efficiency, it was possible to verify a significant effect coming from a set of variables which can be divided into structural (irrigation, greening and land consolidation), managerial (adoption of management tools, use of plural forms of governance, choice of marketing channels, rural production diversification and technical assistance), institutional (occurrence of problems in the contracts of sale, formation of expectations, perception of enforcement in commercial contracts and financial leverage), and human capital (schooling and access to information). Therefore, some of the main research hypotheses were corroborated in the empirical analyses. Lastly, based on the results of the study, a set of suggestions that may subsidize the formulation of public policies and private strategies for the citrus production of São Paulo were made. / Esse trabalho teve os objetivos principais de mensurar os diferenciais de eficiência técnica e econômica na produção citrícola entre propriedades rurais do Estado de São Paulo, bem como de identificar os fatores determinantes desses diferenciais. Além disso, também objetivou-se investigar as principais características da tecnologia de produção citrícola (elasticidades parciais, retornos de escala, economias de escala e elasticidades de substituição entre os fatores de produção). Para tal, foram coletados dados primários junto a uma amostra aleatória representativa de 98 propriedades rurais e utilizaram-se modelos estocásticos de fronteira de produção, de custo e de lucro sob pressuposição das formas funcionais Cobb-Douglas e translog. Para identificar os fatores determinantes dos diferenciais de eficiência, adotou-se o modelo estocástico de um único estágio proposto por Battese e Coelli (1995) e testou-se um conjunto de hipóteses baseadas em diferentes vertentes da teoria econômica (NEI, ECT, teorias de adoção de tecnologias, teorias de capital humano, teorias de gestão da produção, etc) e nas características da produção citrícola. Os resultados do trabalho mostraram a existência de ineficiência técnica (28,4%, em média), de custo (30,6%, em média) e de lucro (55,3%, em média) entre as propriedades rurais. As fronteiras de produção e custo translog indicaram a existência de uma região inicial com fortes retornos crescentes/economias de escala que vão se esgotando até que começam a ocorrer retornos decrescentes/deseconomias de escala. A escala ótima, calculada a partir dos parâmetros estimados na fronteira de produção translog, apresentou-se entre 70.000-100.000 caixas, à medida que, para a fronteira de custo translog, a escala ótima apresentou-se entre 130.000-300.000 caixas. Uma das explicações para essa diferença está no pagamento de preços mais baixos para fertilizantes e mão de obra nas grandes propriedades rurais, o que se constitui em uma fonte de economia de escala pecuniária. Quanto aos fatores determinantes dos diferenciais de eficiência técnica, de custo e de lucro, constatou-se efeito significativo de um conjunto de variáveis estruturais (irrigação, adensamento e greening), gerenciais (adoção de ferramentas de gestão, uso de formas plurais de governança, escolha de canais de comercialização, diversificação da produção e assistência técnica), institucionais (ocorrência de problemas nos contratos de venda, formação de expectativas, percepção de enforcement nos contratos comerciais e nível de alavancagem financeira) e de capital humano (escolaridade e acesso à informação). Assim, algumas das principais hipóteses da pesquisa foram corroboradas nas análises empíricas. Por fim, com base nos resultados do trabalho foi feito um conjunto de sugestões que pode subsidiar a formulação de políticas públicas e estratégias privadas para a citricultura paulista.

本研究依據2003年「行政院新聞局廣播電視白皮書」、「公開上市、上櫃資訊觀測網站有線電視系統業者財務報告書」等文獻資料，先以資料包絡分析法評估個別系統業者的技術效率，再應用Tobit截斷迴歸方法，探討影響台灣有線電視系統業者經營效率的因素。 評估結果顯示，造成個別有線電視系統業者經營技術無效率的因素，主要歸咎於浪費資源所造成之無效率，而非因生產規模不適當所造成之無效率，迴歸結果發現，營業收入與技術效率間具正向關係，而頻道數、廣告密集度、經營區面積、集團化及業務集中度對技術效率間具負向關係。 / Based on the information of 2003 “The Broadcasting television paper of Government Information Office of Executive Yuan” and “Finance Statements of The Cable System Operators of Listed Companies and OTC Listed Companies from Market Observation Post System in Taiwan”, this study first uses DEA to assess technical efficiency of cable system operators, and then applies the Tobit censored regression technique to investigate the determinants of technical efficiency. The efficiency-evaluating result shows that the main factor, which causes inefficient management, is an ineffective use of resource; an improper production scale has less impact on it. The regression result also shows that the revenue has a positive impact on technical efficiency, but the number of channels, Area, the density of advertisement, conglomeration, and business focus has negative impacts on technical efficiency.

兩岸在2001年底加入世界貿易組織（WTO），使得兩岸壽險市場受到經濟自由化及國際化的衝擊。因此，要如何提高自身的經營績效及競爭能力，便成為兩岸壽險公司最重要的目標。本研究以資料包絡分析法為基礎，並結合共同邊界（metafrontier）分析法，針對兩岸地區在2004年至2007年共59家壽險公司，進行經營效率與Malmquist生產力指數的實證研究。在生產力變動來源的拆解上，本文延伸Pastor and Lovell（2005）的固定規模報酬模型，利用變動規模報酬的生產邊界來衡量各公司的技術變動及技術差距比率變動，使生產力變動的來源上獲得更明確的意涵。最後本文利用Tobit迴歸模型，探討影響兩岸壽險公司經營效率的因素。 / After joining the WTO in December 2001, there is the advent of economic liberalization and internationalization on the life insurance market of Taiwan and Mainland China. Therefore, how to improve the operating performance and the industrial competitiveness in the present economic circumstance is the critical and important goal of the life insurance industry in Taiwan and Mainland China. This study applies data envelopment analysis with metafrontier model to measure the managerial efficiency and Malmquist productivity index of 59 firms of life insurance industry in Taiwan and Mainland China from 2004 to 2007. On decomposing the sources of productivity change, we extend Pastor and Lovell’ s CRS model (2005) to a VRS frontier benchmark to measure technical change and technical gap ratio change, which apparently provides us a more meaningful decomposition of productivity change. Finally, this study uses Tobit regression model to examine the factors which influence the managerial efficiency of the life insurance industry in Taiwan and Mainland China.

本研究以民國75至86年間，新銀行開放設立前已存在之本國舊銀行實際經營資料，利用資料包絡分析法估計成本效率值，並將之分解為純技術效率、規模效率及配置效率。再利用Tobit迴歸分析，以探討開放新銀行設立對本國舊銀行經營效率之影響。 研究結果發現，整體舊銀行投入資源之運用效率，仍有很大的改善空間。此外，成本無效率之來源主要為技術無效率。 考慮其他影響效率之因素後，開放新銀行設立對舊銀行之經營效率具有顯著之正向影響。此結果顯示新銀行設立對舊銀行之經營形成很大的競爭壓力，導致本國舊銀行不論在資源投入、規模調整或資源配置上，皆積極努力地改善。本實證結果與政府希望透過開放新銀行，對經營僵化之國內銀行業加以刺激，以提升舊銀行經營效率之目標相一致。 / This study empirically examines whether opening up the new banks to establish affects various efficiency ratios of Taiwan old banks or not. It uses Data Envelopment Analysis (DEA) to assess cost efficiency, pure technical efficiency, scale efficiency and allocative efficiency based on the Taiwan old banks data from 1986 to 1997. Then, applies the Tobit censored regression model to examine the relationship between opening up the new banks to set up and these efficiency measures. The empirical result shows that the usage efficiency of resource inpute of whole old banks isn't up to the appropriate point, so there is plenty of space for improvement. Besides, cost inefficiency primarily results from technical inefficiency, not allocative inefficiency. After considering other factors of the effects of efficiency, it's obviously positive relationship between opening up the new banks to set up and operating efficiency of old banks. The result shows that these new banks establish put competitive stress on the operation of old banks. So those old banks try hard to improve their resource input, scale adjustment, or resource allocation, etc. This result corresponds with the government's intention to raise the operating efficiency of original banks.

銀行獲利能力影響因素的研究上，有以個體觀點出發的市場力量(market power)理論，其中一個假說為結構－行為－績效(S-C-P)假說，其認為整體產業結構之市場集中度愈高，銀行將有較高的獲利率，另一假說為相對市場力量(RMP)假說，該假說認為個別銀行市場占有率較高，獲利能力亦較高；以總體觀點出發的效率結構(efficiency structure)理論，其中一假說為以X-efficiency為出發點之管理效率結構(ESX)假說，其認為公司較佳的管理效率，將提高公司獲利能力，另一假說為規模經濟效率結構(ESS)假說，該假說認為個別銀行藉規模經濟的達成、降低成本提高利潤。 　　本研究根據國內外相關文獻，參考國內金融環境的變化、公民營型態的不同，收集民國70年至83年上市、上櫃及公開發行共34家商業銀行之相關資料，將樣本做不同的分組，觀察金融產業結構及經營效率與獲利能力是否具關聯性。實證結果如下： 　　一、以ROA為獲利能力指標之實證結果 　　1.　70至83年之所有銀行：結構－行為－績效(SCP)假說成立，市場占有率(MS)與ROA為負向關係、且達顯著水準，與預期不符。 　　2.　70至83年之公營銀：結構－行為－績效(SCP)假說、規模經濟效率結構(ESS)假說成立，管理效率(XEFF)亦有相當影響力。 　　3.　70至83年之民營銀行：結構－行為－績效(SCP)假說、相對市場力量(RMP)假說、管理效率結構(ESX)假說成立。 　　4.　70至80年之所有銀行：結構－行為－績效(SCP)假說成立，市場占有率(MS)與ROA為負向關係、且達顯著水準，與預期不符。 　　5.　81至83年之所有銀行：無解釋能力。 　　6.　70至80年之公營銀行：結構－行為－績效(SCP)假說成立，市場占有率(MS)與ROA為負向關係、上達顯著水準，與預期不符。 　　7.　70至80年之民營銀行：相對市場力量(RMP)假說成立，效率值與ROA呈負向關係。 　　8.　81至83年之公營銀行：市場集中度較具解釋力（與ROA為負向關係），但亦未達顯著水準。 　　9.　81至83年之民營銀行：相對市場力量(RMP)假說成立。 　　二、以ROE為獲利能力指標之實證結果 　　1.　70至83年之所有銀行：結構－行為－績效(SCP)假說、相對市場力量(RMP)假說、規模經濟效率結構(ESS)假說成立，管理效率(XEFF)亦有相當影響力。 　　2.　70至83年之公營銀行：管理效率結構(ESX)假說、規模經濟效率結構(ESS)假說成立。 　　3.　70至83年之民營銀行：結構－行為－績效(SCP)假說、相對市場力量(RMP)假說成立。 　　4.　70至80年之所有銀行：無解釋能力。 　　5.　81至83年之所有銀行：相對市場力量(RMP)假說。規模經濟效率結構(ESS)假說成立。 　　6.　70至80年之公營銀行：無解釋能力。 　　7.　70至80年之民營銀行：相對市場力量(RMP)假說、規模經濟效率結構(ESS)假說成立，但管理效率(XEFF)與ROA為負向關係、且達顯著水準，與預期不符。 　　8.　81至83年之公營銀行：市場集中度(CONC)與ROE負向關係、且達顯著水準，與預期不符。 　　9.　81至83年之民營銀行：相對市場力量(RMP)假說。規模經濟效率結構(ESS)假說成立。

地方稅捐稽徵機關績效之良窳攸關地方政府庫收，更直接影響地方經濟成長、資源配置效率與所得分配之公平；本文試圖採用能排除外在因素與隨機干擾之三階段產出導向資料包絡分析法（以下簡稱DEA），針對23個地方稅捐稽徵機關2004年迄2008年資料進行管理效率評估，再以隨機邊界分析法（以下簡稱SFA）分離外生因素及隨機干擾以調整各機關產出至相同基準後，再評估排除外在與隨機干擾因素的管理效率。 未考慮外生因素與隨機干擾的DEA效率評估結果顯示，有高達88.7%及82.6%的地方稅捐稽徵機關分別於技術效率及純技術效率上尚有改善空間。第二階段SFA估計結果顯示，土地移轉現值、機關內大專畢業以上員額之比例及員額平均年齡對管理效率皆有正向影響；而總統大選期間及有高鐵停靠站之縣市除對部分產出無顯著影響外，對管理效率之提升亦具優勢；然而，服務轄區土地面積與實徵淨額之效率呈負相關，卻與違章漏稅裁罰效率呈正相關；地方首長選舉期間除為避免清理欠稅招致民怨而降低技術效率外，對其他管理效率則皆呈正相關；又都市計畫面積占稽徵區域比例與地方稅實徵淨額之管理效率呈正相關，卻與欠稅清理效率呈負相關。調整後之DEA結果顯示各項效率值與調整前比較皆存在顯著差異，顯示排除外生因素與隨機干擾影響以避免效率值被錯估確有其必要性；但仍有高達93.05%及68.7%之地方稅捐稽徵機關分別於技術效率及純技術效率上存有改善空間；又多數稽徵機關處於規模報酬遞增階段，即產能過剩而造成資源浪費。另與財政部稽徵業務考核成績比較分析，在規模效率平均值排名方面，除臺南市外，甲組機關排名普遍優於乙組機關；但純技術平均效率值之排名卻有一半以上之甲組機關表現反而不如部分乙組受評單位；顯示甲、乙組之分類歷經多年仍沿襲舊有分組將使各機關未能於適合之群組中受考而錯估其績效。 基於上述實證研究結果，本文提出下列政策性建議： 一、建議逐期分階段調整人力及預算至最適規模，以善加運用資源降低產能過剩情形。 二、建議各機關應引用環保之共乘概念，加強政府機關間橫向溝通、聯繫與合作。 三、若情況允許，建議可不區分甲乙組針對全體地方稅捐稽徵機關進行考核。若人力、時間或其他情況不允許，建議研擬具體方案隨各機關規模改變而有重新分級之機制。 四、建議甲組機關亦可選擇純技術效率較佳之乙組機關作為觀摩學習之對象。 五、建議財政當局可考慮將外在因素之影響納入評核，以提升考核之信度與效度。 最後，臺灣自2010年底起將有部分縣市改制為直轄市，考核編組方式勢將有所變革，有待後續研究者追蹤探討；而改制後所引起之資源重分配亦可作為未來之研究議題。 / The Performance of Local Tax Bureaus is relevant to the revenue of Public Treasury, and even has direct impacts on local economic growth, efficiency of resource allocation and equity of income distribution. This paper attempts to use three-stage out-oriented DEA which can rule out the external factors and the statistical noises to evaluate the efficiency of 23 Local Tax Bureaus in Taiwan during the period of 2004 to 2008. After measuring slack variables of each Bureau in the first stage, the Stochastic Frontier Analysis (SFA) model is used to separate the external factors from the statistical noises, and then adjust the output of each Bureau to the same benchmark. Finally, DEA is again used to evaluate the efficiency of 23 Local Tax Bureaus. The DEA efficiency evaluation results in the first stage show that up to 88.7% and 82.6% of the Local Tax Bureaus still have an ample room to improve their technical and pure technical efficiency. In the second stage, the SFA model estimates show that “the present value of land transfer”, “the proportion of post-graduates in the Bureaus” and “the average age of the staff” have positive effects on the efficiency. “The period of Presidential Election” and “the cities or counties that Taiwan High Speed Rail have set station up” have insignificant impact on part of the outputs, but still have the advantages to enhance the efficiency. However, “the expanse of land in service area” has a negative correlation with the efficiency of net taxation, but is positively related to the efficiency with the fine of illegal tax evasion. “The election period of Local County Executive” has a positive correlation with the efficiency except that tax arrears liquidation might reduce technical efficiency. “The ratio of urban-planed area to the tax levy regional” and the efficiency of net taxation are positively correlated, but negatively related to the efficiency of tax arrears liquidation. After excluding external factors and the statistical noises, the third-stage DEA evaluation results are significantly different from those in the first stage, indicating that it is necessary to exclude impacts of external factors and statistical noises in order to avoid the misjudged value of efficiency. There are still as high as 93.05 % and 68.7% of the Local Tax Bureaus have an ample space for improvement respectively on technical efficiency and pure technical efficiency. Most of the Tax Bureaus are at the increasing return of scale stage, implying that the surplus of capacity cause the waste of resources. Finally, compared with the performance evaluation held by Ministry of Finance, the empirical results in this study show that although the classification of Local Tax Bureaus has been adopt for many years, Bureaus’ performance evaluation results might be misjudged in the unsuitable group. Based on the above empirical results, this research attempts to propose the following policy suggestions: 1. It is recommended to adjust the phase of manpower and budget to the optimum scale for the best using of resources and to reduce inefficiency of excess capacity. 2. Enhancing horizontal communication among government agencies may improve the efficiency of Local Tax Bureaus. 3. If possible, it is recommended to evaluate Local Tax Bureaus without classification. If not, a mechanism of re-rating according to the scale change of Local Tax Bureaus may be needed. 4. It is proposed that Local Tax Bureaus of Group A can take lesson from those of Group B with better pure technical efficiency to learn from. 5. It is suggested that government authorities have to exclude the effect of external factors to improve the reliability and validity of performance evaluation. At the end of year 2010, several counties will be restructured in municipalities. The classification of Local Tax Bureaus for performance assessment must be changed. The reallocation of resources caused by restructuring may be used in future studies.

海外華人人口，截至2004年底止，約為3,808萬人（不含香港、澳門），政府為照顧為眾多之海外僑胞，先於1926年於國民政府下設僑務委員會以推進僑務，復為擴大服務僑社並增進僑民福址，於1985年針對海外僑社需求，選擇華僑眾多之地區，設置華僑文教服務中心，自1985年起迄2004年底止，僑委會在海外各地前後共設置了十七個文教服務中心。為維持該等中心之運作，政府每年均編有巨額預算挹注，為瞭解相對於投入之資源，中心之產出是否符合經濟學上『投入』與『產出』之生產效率概念，本文之研究爰以產出導向之資料包絡分析法建立實證模型進行探討，同時以各文教服務中心為一決策單位，將2001年至2004年間各文教中心之投入及產出項目投入實證模型中，以計算各文教中心的經營績效。 實證結果顯示，海外文教中心整體的技術效率平均值介於2.4662與3.1605之間，同時規模效率平均值大於1，顯示造成各文教中心技術無效率的來源，大部份來自於純技術效率，另一部分則來自於規模無效率。 同時依實證結果資料可以發現，（一）僑委會截至2004年止之十七個文教中心，在各種不同的組合下，僅有4至9個中心之效率值為1，占全部文教中心的二成至五成，顯示整體經營績效有待加強與提升；（二）以僑委會關閉倫敦及墨爾本文教中心雖與實證分析結果相符，然績效較墨爾本中心為低之雪黎文教中心卻未關閉之情況而言，益顯數據性資料於決策過程中之重要性；（三）以全球華人人口分配來看，北美洲地區文教中心之技術效率值，無論在固定或變動規模下，就各種組合而言，均較其他地區文教中心之效率值為佳，顯示除應提高北美地區以外中心之效率外，似乎也反映了服務海外僑胞之資源分配是否過度集中，及與僑胞互動應予加強之問題。 最後，由於本研究係首次將DEA運用於駐外機構經營效率之評估，因此本文之相關實證模型將可作為評估我國其他部會所屬駐外機構效率衡量之基礎及參考。 / The overseas Chinese population, up till 2004, approximates 3.8 millions (not counting Hong Kong, Macao). To attend to their needs, the government has first established the Commission of Overseas Chinese Affairs under the Nationalist Government in 1926. To better and further serve this overseas Chinese community, the government has chosen among several populous areas to set up Chinese Culture and education service center later in 1985. Between 1985 and the end of 2004, 17 service centers have been set up. To keep these centers running requires a big budget support from the government each year. To examine if these centers provide values that conform to the economic concept of "the input" and "the output" production efficiency, this article has used the data envelopment analysis method to establish the real diagnosis model. This model has used various culture and education service centers as policy-making units from 2001 to 2004 to evaluate the efficacy of these service centers. Test results have shown that the mean value of central whole technical efficiency is between 2.4662 and 3.1605. Also, the mean value of scale efficiency is bigger than 1. This demonstrates the inefficient central technology rate of the service centers results mainly from pure technical inefficiency, and partly from diseconomy of scale. On the other hand, test results also show that, (1) up till 2004, among 17 culture and education centers, just only remain 4 to 9 with central efficiency value of 1 under different kinds of combinations. The fact that they account for two tenths to five tenths of the total number of service centers demonstrates the need for improvement in their operating performance (2) the closing of both London and Melbourne culture and education centers does not conform to the findings of the real diagnosis analysis, but Sydney center is not closed, which reveals the importance of data material in the decision-making process; (3) looking at the distribution of global overseas Chinese population, the technology efficiency values for culture and education centers in North America area are far higher than other areas, measured by all sorts of combinations regardless of fixed or variable scale. This has revealed issues of not only efficiency enhancements for local centers excepting this area, but also excessive concentration of service resources allocated within the region and augment the co-activity with compatriots. Finally, since this is the first time DEA has been utilized in a research to evaluate the management efficiencies for government agencies abroad, the real diagnosis model presented in this article might be used as a reference for similar studies in the future.