empirical assumption 中文意思是什麼
empirical assumption
解釋
經驗假定- empirical : adj. 1. 以經驗為根據的，經驗主義的。2. 庸醫的。adv. -ly
- assumption : n. 1. 採取，承擔。2. 假設，假定；臆說；想當然。3. 傲慢，僭越。4. 假裝。5. 〈A-〉聖母升天（節）〈8月15日〉。6. 【邏輯學】小前提。
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By making some assumptions, collision frequency were presented. then the the flocculation kinetics model was established through population balance equation. comparison of experimental data and modeling results indicate that there are the same trend between the two. so the model can predict floes number and size during flocculation of yellow river ' s loess particles without using empirical parameters. the tem and sem were used to obsever floes in the study of floe structure. the flocculation was divided as flocculi, floc and floe aggregate. the floes structure model was established by assumption that particles position in floe accords with tetrahedron. the fractal dimension of model and experimental floes was found to be coincidentso the model can reflect the structure of flocs formed in flocculation of yellow river ' s loess particles by macromolecule flocculant at a certain extent
最後，本文還對絮凝動力學和絮體結構進行了研究，在前人研究的基礎上，針對高分子絮凝黃河泥沙，對絮凝過程作了一些符合試驗條件的假設，建立了顆粒碰撞頻率表達式，應用了顆粒數量平衡方程，從而建立了絮凝過程的動力學生長模型，模型計算結果與試驗數據對比表明，二者趨勢一致，在沒有使用經驗參數的情況下基本上能夠描述黃河泥沙絮凝過程中絮體數量和尺寸分佈的變化過程；對絮體結構的研究中，應用掃描電子顯微鏡和透射電子顯微鏡對絮體進行了觀察，將絮體分為絮粒、絮團和絮網三個不同的生長階段，通過假設顆粒結合位置符西安建築科技大學博士學位論文合正四面體，建立了絮體結構模型，計算得到的模型絮體分形維數基本與試驗中的實際絮體相符，在一定程度上能夠反映高分子絮凝黃河泥沙生成的絮體結構。 -
For the evidence of the research, this paper puts forward the assumption of relation between earnings management and the reverse change in p / e ratio from a new visual angle, studies the earnings management taking use of four models, for example industry - scale total accruals model, extended - jones model etc. the empirical results find some evidence that the chinese listed companies with reverse change in p / e ratio have taken earnings management
接著為了實證的需要，本文將證券市場的評價指標市盈率引入，從一個新的視角市盈率反轉變動出發，提出了市盈率反轉變動與盈餘管理的研究假設。通過運用包括擴展的瓊斯模型在內的四個模型，對市盈率反轉變動上市公司的盈餘管理進行實證研究，分析了不同市盈率反轉變動上市公司市盈率反轉前後的盈餘和成長性表現。
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