近被果型 的英文怎麼說
中文拼音 [jìnbèiguǒxíng]
近被果型
英文
subangiocarp-
The results show that : ( l ) adoption of the intermittent mean price instead of the point price at the end of the option will help to reduce the chances of profit - making manipulated by managers and to curb the manager ' s motive to control the stock price ; ( 2 ) generally speaking, stock price of mean price option is more incentive to the managers than that of the black - scholes ; ( 3 ) when the stock market slumps at the end of the option, mean price option will ensure a moderate insurance for the managers ; ( 4 ) when stock price slumps alone with the overall situation of the stock market in the intermittent option, mean price option. however, will be inefficient as an incentive. chapter four addresses the questions concerning the manager ' s manipulation of the stock price, and the increase of the option risks because of long - term slump of the stock market
第三部分包括第三至五章，第三章針對時點價格容易被控制和時點價格的波動性太大，增加了經理期權的風險等問題，研究採用期權期內的平均價格替代期權期末的時點價格計算經理股票期權收益，構建了幾何型平均價格期權定價公式，並與black ? scholes期權定價公式進行了定量對比分析，結果表明： （ 1 ）採用期權期內平均價格替代期權期末時點價格有利於降低經理通過操縱股價的牟利機會，遏制經理操縱股價的動機； （ 2 ）一般條件下，平均價格期權股票價格對經理的激勵作用優于標準期權； （ 3 ）當臨近期權期末股價下跌時，平均價格期權能為經理提供適度保險； （ 4 ）當期權期內，股票受大市持續走弱影響而下跌時，平均價格期權失去了激勵作用。The structures and dynamic changes of the artifical sand - fixing vegetation were studied based on the follow views : components of vegetation community, plant diversity, life - forms of vegetation, trends of plant growth, characteristics of the vertical and horizontal structure of vegetation, relationship between the vegetation community and environment ( including soil moisture temperature etc. ), relationship between the vegetation community and characteristics of plant physiological activities. some results were showed as follow : 1. components, diversity and life style of artificial vegetation in shapotou region the marked changes of artificial vegetation have taken place during more than 40 years, since the establishment of sand - fixing vegetation
本文以騰格里沙漠東南緣寧夏中衛縣沙坡頭地區人工固沙植被作為研究對象，採用傳統生態學的野外調查方法，從植被群落的組成、多樣性、生活型、群落生長動態、垂直結構特徵、水平結構特徵、群落結構與周圍環境（土壤含水量、溫度）相互關系及其與植物自身生理生態適應特徵關系等多個角度研究了人工植被群落的結構及其動態變化，取得了如下研究結果： 1 、植被群落組成、多樣性及生活型：沙坡頭地區人工植被經過近50年的演變，從流動沙丘到固定沙地，沙地植被的動態變化經歷了從人工植被到人工?自然植被的轉變，從人工植被建立初期的少數幾種引種植物到現有30多種植物，隨著固定沙地時間的延長，植物種類日趨豐富，並且人工植被在15 25年、 40 50年兩個階段，物種的周轉速率最大，即群落結構變化最大。In this paper, systemic theoretic analysis of the relationship of stock structure and operating performance is progressed, based on this, theoretic study and demonstration analysis organic fall together, and the neural networks model that can reflect their relationship total and systemic is established. the input variable of the model can reflect the panorama of stock structure, also, it can embodiment other influence factor of company performance. the evaluation target system that can reflect the operating condition of listed companies completely, impersonality and truly is advanced, at the same time, the best result weights confirm method is brought forward, thereby, the fuzzy integrate evaluations method is improved
本文對股權結構與經營績效之間的關系作了系統的理論分析，並在此基礎上，將理論研究和實證分析有機地結合起來，建立了一個能全面、系統地反映它們之間關系的神經網路模型：該模型的輸入變量在反映股權結構全貌的同時又體現了公司績效的其它影響因素；提出了可以全面、客觀、真實地反映上市公司經營狀況的評價指標體系，同時提出了最佳結果權重確定法，從而改進了模糊綜合評價方法，並利用改進的模糊綜合評價法求出公司經營績效的綜合量化值作為神經網路的期望輸出；改進了神經網路模型的演算法，使其在樣本數據相對較少的條件下也能很好地在性態上模擬被逼近函數。The artificial neural net ( ann ) way is universal regard as one of the most effective ways of stlf. in this paper, some research is developed for stlf using ann ways in several parts : the first part is about the arithmetic of ann based on bp model, namely the advanced of traditional bp arithmetic, one alterable step and scale bp arithmetic based on comparability of model and probability of accepting bp arithmetic is used to enhances a lot the convergence rate of learning process of bp network, but also avoid the stagnation problem to some extent. it indicates that the ann ' s efficiency and precision by the way can be ameliorated by the simulation of real data
神經網路方法在短期預測中已經被公認為較有效的方法，本文針對神經網路用於電力系統短期負荷預測的幾個方面展開研究工作：第一部分研究一般用於負荷預測的神經網路bp模型的演算法，即對傳統的bp演算法的改進，將一種基於模式逼近度和接受概率的變步長快速bp演算法應用到短期負荷預測，模擬結果表明該方法有效的改善了bp演算法收斂速度慢以及容易陷入局部最小點的缺點，從而提高了神經網路用於負荷預測的效率和精度。Clustering analysis showed that plants in the genus of p. salicina could be distinguished from those in the genus of p. ameniaca ; there was some genetic relationship among p. mume, p. salicina and p. ameniaca, of which p. ameniaca was closer to p. mume in genetic relationship ; and the distance between varieties of each genus was different, with the smallest being 0. 1138 and largest being 0. 7633. the genetic distance reflects genetic relationship between tested materials. the result that varieties of each genus were close to each other in genetic relationship testified the traditional morphology - based taxonomy from the genomic dna
不同引物擴增出的帶型完全不同，聚類分析結果表明，李屬植物和杏屬植物能完全被區分開，李、杏和梅之間表現出一定的親緣關系，其中杏，梅之間的親緣關系較近，各屬品種之間都有不同的遺傳距離，最小距離為0 . 1138 ，最大距離為0 . 7633 ，遺傳距離的大小反映了材料間親緣關系的遠近，各屬內品種的親緣關系比較近，這一聚類結果從供試材料基因組dna分子水平驗證了傳統的形態學分類觀點。Wells are installed at two well depths per well nest, respectively 1m and 0. 7m. samples are analyzed for nitrate nitrogen, ammonium nitrogen, total nitrogen, and total phosphor to compare the effect of vegetation type, different field slope and different season. main research results and conclusion of the study are as follows : 1 ) percent total nitrogen is higher in the deep wells 1m than the wells 0. 7m, by 11. 43 %
以水樣中銨氮、硝氮、總氮、總磷為監測指標，比較了不同深度、不同植被類型、不同季節、不同坡度、不同濃度營養鹽沖擊下，緩沖帶對氮磷等營養鹽的消除效果，試驗結果如下： 1 ）與0 . 7m相比，樣點1m深處，緩沖帶對總氮的去除效率要高些，二者相差11 . 43 ，而緩沖帶對銨氮、總磷、硝氮的去除效果，不同深度，消除率比較接近。Control systems in modern automatic engineering are nonlinear, time - changed and indefinite. lt is difficult to model by traditional method, even sometime impossible. under these circumstances we should apply model identification to gain the approximate model of object for effective control, there are many models to be chosen, fuzzy model is one of them, it is put forward with the development of fuzzy control. fuzzy model has characteristics of general approximation and strong nonlinear, it is fit for describing complex, nonlinear systems. to avoid rules expansion when the number of input values are very big. in this paper we apply hierarchical fuzzy model to resolve this problem, we also illustrate it has general approximation to any nonlinear systems. genetic algorithm is a algorithm to help find the best parameters of process. lt has abilities of global optimizing and implicit parallel, it can be generally used for all applications. in our paper we use fuzzy model as predictive model and apply ga to identify fuzzy model ( including hierarchical fuzzy model ), we made experiments to nonlinear predictive systems and got very good results. the paper contains chapters as below : chapter 1 preface
現代控制工程中的系統多表現為非線性、時變和不確定性，採用傳統的建模方法比較困難，或者根本無法實現，在這種情況下，要實現有效的控制，必須採用模型辨識的方法來獲取對象的近似模型，並加以控制，目前用於系統辨識的模型種類很多，模糊模型是其中的一種，它隨著模糊控制的發展而被人提出，模糊模型具有萬能逼近和強非線性的特點，比較適合於描述復雜非線性系統，為了解決模糊模型在輸入變量較多時規則數膨脹的問題，文中引入遞階型模糊模型，並引證這種結構的通用逼近特性。遺傳演算法是模擬自然界生物進化「優勝劣汰」原理的一種參數尋優演算法，它具有隱含并行性和全局最優化的能力，並且對尋優對象的要求比較低，在工程應用和科學研究中，得到了廣泛的應用，本文將遺傳演算法引入模糊模型的辨識，取得了很好的效果。Firstly, the thesis analyzes the concept of performance, classifies the performance and sets up the evaluation index system according to manager ' s traits. secondly, in order to make evaluation credible and rational, the thesis established the model of fuzzy ahp based on evaluation theory and method. finally, consul ting the pm theory, this thesis analyzes the evaluation result by quartered - grid and put forward improving advice according as different evaluation results
本文首先從績效的基本概念入手，對績效作了科學的解釋和分類，並根據管理人員的工作特點及以往對績效指標的研究，建立能夠準確反映其績效的評價指標體系；然後在考評理論及考評方法分析的基礎上，結合近來一些新的考評技術，建立了模糊ahp評價模型，使得考評工作更加可靠、合理；最後，借鑒pm理論，對考評結果採用四方圖法進行分析，根據績效結果將被考評者劃分類型，並針對每種類型制定相應的改進措施，體現有效反饋的原則。分享友人