In order to improve the quality of synthetic seismic records , this paper presents two correction methods for logs correlation calculation and logs forward calibration using sonic - density logging suite 摘要以提高合成記錄制作質(zhì)量為目標(biāo),研究了嚴(yán)重垮塌井段聲波、密度測井?dāng)?shù)據(jù)的校正方法,提出了曲線相關(guān)計(jì)算和曲線正演兩種校正方法。
By employing the capacitance and conductance arrays , the multiphase flow velocities are obtained by cross - correlation technique and a practicable method of the cross - correlation calculation based on the digital signal processing technique is discussed in detail 利用電容電導(dǎo)陣列實(shí)現(xiàn)了多相流的相關(guān)測速,并給出了實(shí)用的基于數(shù)字信號(hào)處理技術(shù)的相關(guān)運(yùn)算方法。
3 . advancing a method to calculate weight of document feature item based on bp neural net the key technologies of information retrieval system are the followings : representation of document and user query ; query matching strategy ; correlation calculation of matching result 提出一種基于bp神經(jīng)網(wǎng)絡(luò)統(tǒng)計(jì)文檔特征項(xiàng)權(quán)重的方法信息檢索系統(tǒng)的核心技術(shù)主要包括三個(gè)方面的內(nèi)容:文檔與用戶查詢的表示:查詢匹配策略;匹配結(jié)果的相關(guān)度計(jì)算。
Experimental results on butane and butane - plant oil flames indicated that , measurement precision by the multi - wavelength method is strengthened by taking radiation information on multiple wavelength units into consideration , and moreover , the radiation calibration procedure is simplified , in that a halogen light source is used instead of in situ flame radiation . in section 2 , fluctuation and averaging analyses are carried out on optical transmission signals by particles passed through laser beams to derive particle size and concentration in measuring area , furthermore , correlation calculations are conducted on two adjacent laser beam signals to obtain flowing velocity of particle 對丁烷氣體火焰及丁烷-植物油混合燃料火焰的測量結(jié)果表明,多波長分析方法優(yōu)于傳統(tǒng)的雙色法,表現(xiàn)在兩個(gè)方面:一、由于綜合考慮多個(gè)波長單元上的火焰輻射信息,多波長方法的測量精度比雙色法有較大的提高;二、在多波長分析方法中,采用標(biāo)準(zhǔn)鹵素?zé)暨M(jìn)行相對輻射強(qiáng)度標(biāo)定,簡化了雙色法中的火焰絕對輻射強(qiáng)度的標(biāo)定。