聚焦準數 的英文怎麼說
中文拼音 [jùjiāozhǔnshǔ]
聚焦準數
英文
focusing ciriterion-
The position and size of the monochromator, focusing curvature radii and tilting angles of the germanium focusing monochromator under different different take - off angle, size and divergency of the second collimator and intensity loss due to the use of it were determined. the neutron flux at different wavelength, under different reflection and take - off angle of the monochromator and divergency of the first collimator, were given. the simulation on the aperture used for limiting beam size in front of the sample showed that, smaller the size of the aperture and further the distance from the aperture to the sample, greater the loss of the intensity and more serious the spread of the beam along vertical direction at the sample position which makes the practical sampling volume greater than expected
用蒙特卡羅模擬方法對中子應力衍射譜儀的設計方案進行了優化研究，提出了一系列可供參考的數據：確定了單色器的位置、尺寸、垂直聚焦單色器在不同起飛角下的聚焦曲率半徑和傾角；討論了第二準直器的尺寸和發散，以及使用第二準直器造成的強度損失；給出了在不同單色器反射面、起飛角、中子波長和第一準直器發散度的情況下樣品處的中子注量率，以及多種組合情況下譜儀的解析度曲線；對限束方孔的尺寸、距離樣品遠近對強度損失和測量中的影響做了深入研究。This research project, based on the existing problems in mathematics curriculum evaluation and the conceptions of mathematics curriculum as the guideline, systematically analyzes the basic characteristics of the developmental evaluation, i. e. multi - dimensional, formative, developmental, understanding and inspiring. drawing on the modern mathematics conceptions, multi - intelligence theory and theories of constructivism, this project systemically illustrated the connotation of the developmental evaluation : the key of evaluation is for application ; the goal is multi - dimensional ; the process is context - dependent ; the outcome is to promote the development. in view of the conceptions of developmental evaluation ( i. e. human - centered whole evaluation ; quality - focused overall evaluation ; participation - stressed autonomous evaluation ; future - faced evaluation ; guiding evaluation and inspiring evaluation ), the components of the developmental evaluation model in the new mathematics curriculum is analyzed in details in this project ( i. e. goal system, subject system and object system ) and the core structure of the developmental evaluation is established ( i. e. evaluation indicator system model )
本課題研究以數學課程評價的現存問題為著手點，以數學課程理念為目標指向，系統分析了數學新課程發展性評價的多元性、形成性、發展性、理解性、激勵性等基本特徵;以現代數學觀、多元智力理論、建構主義理論以及成功智力理論為理論背景，系統闡述了數學新課程發展性評價之意蘊?評價核心聚焦應用，評價目標指向多元，評價過程依存情境，評價結果歸依發展;以數學新課程發展性評價理念，即以人為本的全體性評價、注重素質的全面性評價、注重參與的自主性評價、促進完善的引導性評價、不斷進取的激勵性評價、面向未來的期望性評價為航標，深入剖析了數學新課程發展性評價模式的構成成分，即目標系統、主體系統和客體系統，由此構建發展性評價模式的核心圖式?評價指標體系的模式:以數學新課程發展性評價過程為參照，尋求並創設評價準則的設計技術，評價權重的構造技術，評價信息的收集技術，評價結果的分析與處理技術;以數學新課程評價系統內蘊的一般認識論、發生認識論與發展認識論指導評價方法，詳細探討了檔案袋法、表現性評價、自我評價與同伴評定相結合的方法、蘇格拉底式研討評定和測驗法在評價中的應用。It combines the real echoes with the date simulated using the real airborne sar system parameters to analyze and validate the method. after the combined data are filtered, the improved greatest of cell - average constant - false - alarm - rate ( go - ca - cfar ) is used to judge whether moving target is detected or not. in the following, real moving target is detected and its velocity and position is gained through which it is focused well
將接收的實際場景數據與實際系統參數下模擬的典型數據相結合，分析、驗證了頻域濾波法的性能，並對濾波后的數據採用改進的選大單元平均恆虛警率（ go - ca - cfar ）方法進行處理，判斷動目標是否存在；然後對實際的動目標進行檢測，準確的估計出目標速度及位置並對目標重新聚焦成像，接下來將聚焦的動目標圖像和常規sar圖像迭加，同時得到了回到真實位置的動目標聚焦圖像和實際場景sar圖像。This is achieved experimentally by focusing the selector aperture on the final screen using the diffraction lens, which is most accurately done after removing the objective aperture, and then ( after replacing the objective aperture ) focusing the specimen using the objective lens only
這已經通過使用衍射透鏡在最終屏幕上聚焦選擇孔實驗性的完成，此方法多數能在移動目標孔后準確完成，然後（重置目標孔后）僅通過目標透鏡聚焦樣本。The processing results of real data show that the effects processed by cma and mec is equivalent
實測數據結果顯示，對比度最大化與最小熵準則自聚焦的視覺效果基本相同。Undulate acquisition surface is one of the main properties of the seismic datasets from western china. based on the synthetic source record migration method and wave stack principle, a method of migrating directly from the undulate surface is presented and tested
結合我國西部地震資料的特點，針對起伏地表情況下的地震數據成像問題，提出了與合成震源記錄偏移方法相應的成像方法以及基於共聚焦點技術的基準面向上校正方法。分享友人