crossover type 中文意思是什麼
crossover type
解釋
交換型-
After that, the multifractal spectra dq - q are computed by fixed - mass method. the results show that in the studied scaling range different types of landscapes and profiles in different directions perform different fractal properties, that is, the d value and crossover length ^ decrease in turns with the landform type from high - moutain, mid - low mountain to basin, and the profile parallel to wear grooves often has lower d values ( < 1. 5 ) than those perpendicular to wear grooves do ( 1. 5 ) in the same section
提出以地貌分形特點和渡越長度為依據的地貌層次界定方案，研究指出了5km左右應為宏觀臨界點：不同構造地貌區、不同取向的剖線的多重分形譜值域范圍寬窄表現出中低山區高山區盆地區，垂直構造地貌斜坡方向斜交方向平行方向的特點，表明了內外營力作用的不均勻性和方向性。 -
2. ga optimized bp neural network first, selected function for evaluating. second, used matlab toolbox to design ga ( chosen selection methods, crossover type, and mutation probability ). ga could get rid of redundant node and branch effectively from bp network, and optimized it
（ 2 ）遺傳演算法優化網路首先確定評估函數，再利用matlab提供的遺傳演算法工具箱進行演算法設計（確定選擇方法、交叉類型、變異概率等） ，剔除網路冗餘節點和分支，實現對bp網路的優化。 -
The economic benefit as the basic study angle ; then establishes the new urban development, particularly the crossover - type extension development as the basic study object following the investigation on the current urban development in china. afterwards, the paper also analyzes the related theories in china and abroad, and elaborates that the urban development must face square the actuality in china and hold a correct attitude of " homeland standpoint " while absorbing the nutn ' ent from the west. moreover, the paper illustrates the basic theory and analysis approaches employed for the study in this field, i. e. the economic principles and thinking, accentuating the philosophy tendency in such studies, which means the proposal of any scientific method and technological measures must be based on the knowledge of their existence and the original background and with equal attention given to the epistemology and methodology
本文通過對城市發展的經濟成因分析，選取城市綜合效益、特別是經濟效益作為基本研究視角；通過對當代中國城市發展的現實考察，確立城市新區發展、特別是跨越式外延發展作為基本研究對象；通過對國內外相關理論的分析，認識到在汲取西方有關理論營養的同時，必須正視中國實情，端正「本國立場」 ；本文還闡明了開展該領域研究的基礎理論和基本分析方法，即經濟學原理和經濟學思維，強調了開展該領域研究的哲學傾向，即一切科學方法和技術手段的提出必須以對事物的存在及其產生的背景的認識為前提，認識論與方法論不可偏廢。
分享友人