Premotor cortex and numerical processing : a meta - analysis of functional neuroimaging studies 腦功能成像研究的元分析研究
Advances in functional neuroimaging studies of numerical processing : its cerebral localizations 數(shù)字加工的腦功能成像研究進展及其皮層定位
Heighten precision and veracity of gps position with numerical process and optimization is a critical emphasis to the research 對gps觀測值進行統(tǒng)計處理與數(shù)值優(yōu)化以提高gps定位精度與準確度成為本課題研究的一大重點。
Because of the complexity , the research is focused on numerical process but the existing process methods apply too much simplification so the coupling cannot be reflected truthfully 由于該問題的復(fù)雜性,目前對它的處理主要集中在數(shù)值研究方面,但現(xiàn)有的研究方法對該問題采用太多簡化,尚未能真實地反映耦合性質(zhì)。
This method not only can deal with the problem of singularity , but can simplify the numerical process of interpolation function , based on the principle of minimum total potential energy , the formulas of pim are arrived 固定節(jié)點法不但可以方便地消除系數(shù)矩陣奇異問題,而且插值過程很簡單。由勢能最小原理,推導(dǎo)了點插值方法的控制方程。
For these proposes , we chose electromagnetic boundary integral equation ( bie ) theory as the theoretical foundation , method of moments ( mom ) as numerical process and the multilevel fast multipole algorithm ( mlfma ) to accelerate the solving process and reduce memory requirement 為此,我們選擇了電磁場邊界積分方程( bie )理論作為理論基礎(chǔ),以矩量法( mom )作為數(shù)值求解方法,并使用多層快速多極算法( mlfma )來加速求解過程和降低存儲需求。
One of the hybrid grids " advantages is easy to control the number of mesh layers and can decrease the number of grids , which make the numerical process require less computer resources and reduce the computation time . so the hybrid grids are involved in improving the computation efficiency . a finite volume hybrid solver which is based on jamson ' s scheme is developed 該混合網(wǎng)格優(yōu)點之一是能很好地控制靠近物面附近的網(wǎng)格層數(shù),同時能減少網(wǎng)格的數(shù)量(在相同網(wǎng)格結(jié)點時與全場均采用非結(jié)構(gòu)網(wǎng)格相比) ,這就降低了對計算機資源的要求,同時能減少計算時間,提高計算效率。
Being associated with the project " the development of numerical process planning integration platform faced the agility manufacture " , which is sponsored by sichuan province , this dissertation puts forward that the application of pdm for middle - small manufacturing enterprises should make edm be the kernel matter . the system structure and the application method are proposed based on the pdm principle 本文結(jié)合四川省重點攻關(guān)項目“面向敏捷制造的數(shù)字化工藝集成平臺的開發(fā)”的研究,利用pdm的思想方法,提出了中小型制造企業(yè)實施pdm應(yīng)以工程圖文檔管理為核心內(nèi)容,構(gòu)建了中小型制造企業(yè)實施pdm的方法及其總體框架。