Family ecological environment and children ' s early mathematical development 兒童早期數(shù)學(xué)認(rèn)知能力的結(jié)構(gòu)及其特點(diǎn)
First of all , the mathematical development and extensive computer simulation are used to analyze the influence of amplitude and phase unbalances of in - phase and quadrature channels on weather radar echo spectrum estimation 首先對(duì)回波正交雙通道幅相不平衡對(duì)氣象回波譜估計(jì)的影響進(jìn)行了詳細(xì)的理論推導(dǎo)和計(jì)算機(jī)仿真。
This study starts with a theoretical model of the algorithm of basic iterative learning control and presents a mathematical development , thus completing the numerical simulation of the algorithm in the matlab software 對(duì)于以固定頻率振動(dòng)的系統(tǒng),其運(yùn)動(dòng)具有高度重復(fù)性以及強(qiáng)周期性,因此迭代學(xué)習(xí)控制對(duì)于振動(dòng)主動(dòng)控制來說具有很大的適用性。
New practice of mathematical teaching link - up , which proceeds from the realities among the students , is mainly absorbed in studying the process and integrity of relevant mathematical development , with an attempt to adapt the new students to unfamiliar environment 銜接教學(xué)的新實(shí)踐從學(xué)生的實(shí)際出發(fā),關(guān)注相關(guān)數(shù)學(xué)知識(shí)發(fā)展的過程性與整體性,力求通過研究學(xué)生、教材、教法來使新生適應(yīng)新的環(huán)境。
Based on the examination of the number theoretic backgrounds of gauss and hilbert and the relevant mathematical development in 19th century , a discovery is made by induction that the solvability and the scientific value of mathematical problems may change with time 運(yùn)用歸納方法,通過對(duì)高斯、希爾伯特兩人數(shù)論背景的比較以及對(duì)19世紀(jì)相關(guān)數(shù)學(xué)進(jìn)展的考察,得出數(shù)學(xué)問題在不同歷史時(shí)期可解性及科學(xué)價(jià)值會(huì)發(fā)生改變的結(jié)論。
The reason , which the computer is not invented in china , is in many ways , one side is the chinese ' s policy of the intelligentsia , the other said is " zhishu thinking " and the evaluating of mathematics . we should use the viewpoint of scientific and overall in evaluating the mathematical development of ming dynasty , not simple axiomatizecal mathematics 一是牽涉到對(duì)明代數(shù)學(xué)的評(píng)價(jià)問題,不能把公理化數(shù)學(xué)作為評(píng)價(jià)數(shù)學(xué)的唯一標(biāo)準(zhǔn),應(yīng)當(dāng)全面、科學(xué)地評(píng)價(jià)中國傳統(tǒng)數(shù)學(xué),特別是明代數(shù)學(xué);二是數(shù)學(xué)以外的,包括社會(huì)大環(huán)境,如科舉制度、治術(shù)思想、自信心不足和政府行為等不良因素的影響。