正割函數 的英文怎麼說
中文拼音 [zhēnggēhánshǔ]
正割函數
英文
secant-
On the other hand, they play an important role in the theories of esfimation for regression function. in this paper, we mainly get the large sample properties for partitioning estiona - tion and modified its estimation. for example, we proved their asymptolic normaity under nuture conditions by means of mortingle theory ; we also get their strong consistency for regression function under censored samples ; and finaly we genearzed the result to dependence sample and have strong consistency for the modified partitioning estimation of regression function
因此本論文研究了回歸函數基於分割估計及改良基於分割估計的大樣本性質，利用鞅的有關理論，在比較自然的條件下，證明了其漸近正態性；首次構造了截尾樣本的回歸函數基於分割估計及改良基於分割估計，並證明其強相合性；同時把有關結果推廣到相依樣本下（如混合） ，獲得了改良基於分割估計的強相合性及收斂速度。The main contributions of this dissertation are listed as the followings : l ) deducing and proving the " three in one " theory of natural monopoly, that is, from the angles of economies of scale, economies of scope and economies of network, giving an explanation of natural monopoly ; 2 ) putting forward the concept of " strict superadditivity " and proving that total value function and total revenue function of network economy have strict superadditivity ; 3 ) summarizing the emerging characteristics in the market definition of natural monopoly, that is, in the monopoly industry, " market " tends to be more and more smaller than " industry " ; 4 ) expounding that the objective patterns of regulatory reforms of the railway industry in china are explicit regulation with partly characteristics of implicit regulation ; 5 ) proving the idea that the structural reforms of the railway industry in china should be hierarchical ; 6 ) demonstrating the theoretical bases for whether infrastructure management should be separated from transpo rt operation ; 7 ) expounding and proving that the interior of the railway industry in china should implement the differential property rights reform pattern
本文的研究特點在於： （ 1 ）在規模經濟、范圍經濟的基礎上進一步推導並證明了網路經濟與自然壟斷的關系，即自然壟斷可以從規模經濟、范圍經濟、網路經濟三個角度來解釋論述； （ 2 ）明確提出了一個與鮑莫爾、潘澤與威利格等人提出的「成本劣加性」相類似的概念? ?價值優加性，並證明了網路經濟的總價值函數和總收益函數具有嚴格優加性； （ 3 ）概括了自然壟斷市場界定中所出現的新特徵，即在壟斷產業中， 「市場」正越來越小於「產業」 ； （ 4 ）進一步論證了中國鐵路產業規制創新的目標模式是兼有部分內生規制特點的外生規制； （ 5 ）在中國鐵路產業的結構改革中應體現分層次的思想； （ 6 ）明確論述了內容提要鐵路路網公司等自然壟斷環節是否分割的理論基礎; （ 7 ）提出並進一步證明了中國鐵路產業內部應實行差異化的產權改革模式。The focus of the thesis lies in an elaboration of the influences exerted upon a listed company ' s profit return by the monopolist position the state - owned shares occupy, by the degree to which share - right is concentrated, and by the division of non - negotiable shares and negotiable shares, as well as of the positive promotion to the company ' s profit return by the system of executives buying - back shares and employees " share - ownership. based on theoretical analysis and case study, the thesis proposes some measures for optimizing the share - right composition and enhancing the profit return of the listed companies. the conclusion can be summed up as follows : ( 1 ) owing to the absence of real trustor, the unduly long, hence low, efficiency of the agency chain, state - owned shares are prone to being controlled by insiders and to the problem of share - holders " interests being embezzled by insiders
基本的分析結論可以概括為如下幾點： （一）國有股由於真正的委託人缺位，代理鏈條過長，代理效率低下，容易產生內部人控制，並發生內部人侵佔股東利益的問題，法人股在公司治理中的效率明顯優于國有股，因此，如何完善國有資產管理體制是優化股權結構的關鍵，本文提出了完善國有資產管理體制的具體建議； （二）在非流通股與流通股並存的股權分割下，非流通股股東與流通股股東具有不同的目標函數，非流通股股東的目標函數是提高每股凈資產，而流通股的目標函數是股票的二級市場價格，目標函數的不一致，導致股東之間行為的不一致，相互沖突的行為造成效率的損失。A novel method of content - based image segmentation using deformable template matching is proposed. a two - dimensional ( 2 - d ) deformable template based on orthogonal curves is built by pre - computing extensions of the deformable template along orthogonal curves and sampling the curves uniformly. then the definitions of internal and external energy functions are given according to the image segmentation problem, and genetic algorithm is used to obtain globally optimal solutions. the proposed method uses a lower - dimensional search space than conventional methods and reduces the sensitivity of the algorithm to initial placement of the template. experiments on real - world images and in simulations at low signal - to - noise ratio show the robustness and good performance of the method
本文提出一種採用可變形模板匹配技術進行基於內容的圖像分割演算法.通過預先計算出可變形模板沿著變形的正交曲線，並對模板曲線及正交曲線進行離散抽樣，建立一基於正交曲線的二維（ 2 - d ）可變形模板，針對圖像分割問題定義控制可變形模板進行變形的內、外部能量函數，本文採用遺傳演算法搜索能量函數最小的全局最優解.該新演算法比傳統的可變形模板匹配方法降低了搜索空間的維數，減少了演算法對模板初始位置的敏感.對實際圖像及模擬低信噪比圖像處理的結果表明，新演算法具有良好的分割精度及穩定性Using a corner - cutting algorithm, this thesis shows that the sbgb bases are normalized totally positive ( tnp ), and the wsgb bases are not tnp
構造了一種割角演算法，證明了sbgb型基函數是規范化全正的； 2For the bar image segmented, bilinear transformation function is used to restore the bar image
對分割出的圖像，採用雙線性變換函數來實現目標的校正。Based on fuzzy clustering algorithm, we studied the objective function of the traditional fuzzy c - means algorithm and proposed a modified objective function for fcm ; we discussed clustering validity problem, and a texture segmentation method based on adaptive fcm has been constructed by the guidance of fuzzy clustering validity
在介紹聚類演算法的基礎上，研究了模糊c -均值聚類演算法目標函數的改進問題，提出了基於修正目標函數的fcm演算法；討論了聚類有效性問題，在模糊聚類有效性函數指導下構造了一種自適應模糊c -均值聚類演算法的紋理分割方法。分享友人