observation n. 1.觀察,注意;觀察力;?望。 2.觀測,實(shí)測;【航?!繙y天;【軍事】觀測,監(jiān)視,偵察。 3.(觀察得的)知識,經(jīng)驗(yàn);〔pl.〕觀察[觀測]報(bào)告[資料]。 4.經(jīng)驗(yàn)談,講話,談話;評述,按語,短評,意見 (on)。 5.〔口語〕發(fā)言,言論。 a man of no observation 沒有觀察力的人。 an expedition of observation 觀察隊(duì)。 sampling observation 抽查。 service observation 業(yè)務(wù)檢查。 a witty [foolish] observation 聰明[糊涂]話。 come [fall] under one's observation 看見,瞧見。 keep a suspect [patient] under observation 監(jiān)視[觀察]一個可疑的人[病人]。 make a few observations on 簡單談?wù)剬Α膸c(diǎn)看法。 take an observation 【航?!繙y天。
sampling n. 1.取樣(品),取標(biāo)(本)〔指行動或程序〕。 2.樣品,標(biāo)本。 3. 剽竊拼湊歌曲。
The autonomous celestial navigation algorithm in the case of small sample observation is investigated in this paper 本文分析了航天器實(shí)現(xiàn)自主導(dǎo)航的天文導(dǎo)航方法。
In accordance with coal sample observation by scanning electron microscope ( sem ) and researches based on such subjects as anthracology , tectonic geology and material mechanics , the endokinetic fractures in coal are further classified into dewatering fractures , condense fractures and static pressure fractures , while the exogenetic fractures are further divided into tensile fractures , pressure fractures , shrink fractures and slack fractures , consistent with the development regularity of the geometric shapes , sizes and arrangement of fractures 摘要分析、歸納了大量的掃描電子顯微鏡觀測結(jié)果,以煤巖學(xué)、構(gòu)造地質(zhì)學(xué)研究?基拙,依鋸煤中顯微裂隙的形態(tài)、大小、排列組合等發(fā)育特征,將內(nèi)生裂隙進(jìn)一步劃分?失水裂隙、縮聚裂隙、靜壓裂隙,將外生裂隙進(jìn)一步劃分?張性裂隙、壓性裂隙、剪性裂隙、松弛裂隙。
We present two different frameworks to analyzing the high frequency time series : first , regularly spaced sampled observations , which is sampled with interval of one hour , one minute even one second ; secondly , the irregularly spaced data , such as transaction by transaction data 。 the main work and innovations of the dissertation include : 1 . through empirical research of high - frequency time series of shanghai composite index , the paper researches the different statistical properties on different frequency 高頻時間序列的分析與建模是金融計(jì)量學(xué)的一個全新研究領(lǐng)域。金融市場中高頻時間序列分為兩類:一類是采樣間隔相等的數(shù)據(jù),比如一小時、十分鐘、五分鐘、甚至是以秒為單位采集的按時間先后排列的等時間間隔的數(shù)據(jù);另一類是指對交易過程實(shí)時采集的數(shù)據(jù),也就是每筆交易的數(shù)據(jù)(顯然是不等間隔的數(shù)據(jù)) 。
Contrasting this , in feedback control the most majority of complex systems are controlled using sampled observations of system behavior taken at discrete time instants . thus the resulting controlled systems are hybrid systems , which are called sampled - data systems , involving both continuous - time and discrete - time signals . the investigation of sampled - data systems is motivated primarily due to the widespread use of digitally implemented controller in present - day feedback control of continuous - time systems 工程實(shí)踐中遇到的動態(tài)系統(tǒng)通常是連續(xù)時間系統(tǒng),與此相反,大多數(shù)復(fù)雜系統(tǒng)的反饋控制卻是通過觀察采樣點(diǎn)上的系統(tǒng)行為來進(jìn)行控制的,結(jié)果所得到的反饋控制系統(tǒng)是個混合系統(tǒng),它含有連續(xù)信號和離散信號,這樣的系統(tǒng)稱之為采樣系統(tǒng),當(dāng)今連續(xù)受控系統(tǒng)中數(shù)字控制器的廣泛運(yùn)用促進(jìn)了對采樣系統(tǒng)的研究,已有的線性采樣系統(tǒng)理論顯然不能滿足處理非線性采樣系統(tǒng)的需要,因此近年來非線性采樣系統(tǒng)的分析與設(shè)計(jì)已經(jīng)成為國際控制論界的持續(xù)的研究熱點(diǎn)之一。