f-test 中文意思是什麼
f-test
解釋
f檢驗-
The anti - microbial activities of crude ethanol extract from aerial parts of sophora alopecuroides and its petroleum ether, chloroform, n - butanol and water fractions of sophora alopecuroides to pythium aphanidermatum, fusarium oxysporum f. sp. cucumerinum, fusarium oxysporum f. sp. lycopersici, alternaria solani, pseudomonas pachrymans and xanthomonas vesicatoria were tested by mycelial radial growth test and agar - well diffusion
本實驗採用帶毒平板菌絲生長法和瓊脂打孔藥劑擴散法測定了苦豆子地上部分乙醇粗提物及其石油醚、氯仿、正丁醇和水層的不同極性溶劑萃取物對瓜果腐霉、黃瓜枯萎病菌、番茄枯萎病菌、番茄早疫病菌、黃瓜角斑病菌和番茄瘡痂病菌的抗菌活性。 -
In view of bearing capacity of the elastoplastic theory analysis, the author made a comparison between the achieved bearing capacity limit load pi / 4 of round base ( space problem ) and the limit load pi / 4 of bar groundwork foundation design ( plane problem ) from soil mechanics at home and abroad as well as foundation criterion, and explained why the value of formula in present design criterion from soil mechanics is inclined to be conservative. in the light of the author ' s many years experience of vibration test on the spot and the research work of relevant projects, the author worked over the dynamic pile testing of the bearing capacity of foundation and batholith, and gathered the parameter of dynamic analysis and testing. the author also talked over the difficult point of pile foundation design criteria in present batholith engineering world, i. e. the confirmation of batholith bearing capacity of pile end, from the following aspects : a ) confirmation of single axis counter - pressure strength of rock in house ; b ) f. e. m calculation of elastoplastic model ; c ) calculation of soil mechanics ; d ) deep well load test
然後，對巖土工程領域至今尚未解決，甚至不為人注意的考慮地基變形的地基承載力問題進行了實用化的探討，提出了考慮地基變形的地基承載力上程計算方法；對基於彈塑性理論分析的地基承載力國內尚未見報道的空間問題得到了圓形基礎（空間問題）的承載力界限荷載p _ （ 1 / 4 ） ，並與國內外土力學專著及地基基礎設計規范中的條形基礎（平面問題）的界限荷載p _ （ 1 / 4 ） ，進行了對比，從而定量上解釋了目前設計規范引用土力學承載力公式值偏於保守的這一情況；根據本文作者多年從事現場地基工程振動試驗及相關課題的研究工作，本文以截頭錐模型模擬地基，對地基（巖基）承載力的動測法進行了研究，為各類地基（包括巖基） ，匯總了動力分析和檢測川的參數：針對日前巖土工程界應用樁基設計規范中的難點? ?樁端巖基承載力的確定問題，從巖石室內單軸抗壓強度確定、基於彈塑性模型的有限單元法計算、土力學計算及深斤載荷試驗四方面進行了深入討論；本文作者根據多年現場載荷試驗的工程實踐，對深井荷試驗裝置的核心部分? ?反力裝置，設計了側壁支撐反力加載系統，該加載系統具有實用、簡便、穩定及安個等優點。 -
Circadian parameters were analysed by the cosine method, and by the f test to judge the statistics significance
用餘弦分析獲取節律參數，並經振幅檢驗，分析是否存在晝夜節律。 -
According to the system technology require, adopting singlechip realize open loop digital control of hdclsm ; using v / f conversion and complex key - control method realize digital setting of system parameter, such as velocity ; using micro - stepping control insure the motor running more smoothly ; adopting debasing speed control method to eliminate the mechanical impact of distance termination effectively ; at the same time, analyzing main power circuits drive circuit and protect circuit of system, completing hardware design and facture and software programming and debugging ; at last, making a whole test in hybrid rotary step motor. the experiment result indicates that this control system reaches the qualities required and run smoothly also
根據系統技術要求，採用單片機實現了混合式直流直線步進電動機的開環數字控制；利用v f變換和復合鍵控方法實現了系統轉速等參數的數字設定；利用細分控制技術保證了電機運行的平穩性，並進行了波形分析和理論研究；採用單片機軟體降速控制策略解決直線步進電機行程末端的機械沖擊問題；同時對主功率電路、驅動電路和系統保護電路進行了分析，完成了硬體設計、製作和軟體編程、調試，最後在混合式旋轉步進電動機上進行了全面測試。 -
Ha possesses well biocompatibility, which has been discovered through test and in clinical application. however, the relatively large dissolution or resorption rates of ha will result in the failure of the implants. fluoridated hydroxyapatite ( hfa ) in whose structure f " occupies partially the position of oh " in ha, is expected to be more resistant to body fluid and less soluble than ha and still possess almost the same bioactivity as ha
生物活性羥基磷灰石薄膜（ ca _ （ 10 ） （ po _ 4 ） _ 6 （ oh ） _ 2 ， ha ）廣泛地應用於鈦合金硬組織種植體表面改性，臨床應用發現ha薄膜具有很好的生物相容性，但是ha薄膜在體內溶解速度有時可能會過快，引起種植體在體內失效，因此， ha薄膜長效性方面有待于提高。 -
The pca results indicated that the characteristics of length, breadth, the angle of leaf basal in lamina and the characteristics of calyx - tube, corolla dimension and inflorescence pedicel in the flower were the main reasons leading to the morphological variations, and the f - test of single factor variance analysis verified the conclusion
主成分分析顯示，葉部特徵的長度、寬度、葉基夾角等，以及花部特徵的花獸筒、花冠幅、花序總梗等是造成不同居群野生早櫻表型差異的主要因素，單因素方差分析也印證了這一結論。 -
We discussed four common outlier tests in pls regression, included partial f test, residual plot and normal quantile plot, latent variables plot ( tit plot ), contribution plot of variables to latent variables. among these techniques, the first and second are used frequently in ordinal multiple multivariable regression
實例一的資料來自於衛生管理研究，主要用於偏最小二乘回歸與一般最小二乘回歸之間的優劣比較，以及偏最小二乘回歸離群點檢測方法的實際運用。 -
The first section is about the way and principle of the h ( k ) f operation valve ; the second section is about controlled way of the air gate. the third section is about the controlled and transmission of the pressure signals in train pip, auxiliary pressure air tank and bake tank ; the fourth section is about the auto test way and principle of the three thoroughfare valve leakage
第一部分是h （ k ） 、 f操作閥的控制方法和原理；第二部分是風門的控制方法與原理；第三部分是列車管、副風缸、制動風缸壓力信號的採集與傳輸控制；第四部分是三通閥漏泄自動檢測方法與原理。 -
Effect of mgo, f - cao, feo, ro phase and metal fe in steel - making slag powder on soundness of cement is investigated by boiling test, steam test and autoclave test
採用沸煮、高溫長時間蒸養及壓蒸方法研究了鋼渣粉中的f - cao 、 mgo 、 feo 、 ro相及金屬鐵對水泥安定性的影響。 -
Tests on electric cables under fire conditions - part 3 - 21 : test for vertical flame spread of vertically - mounted bunched wires or cables ; category a f r
電纜在著火條件下的試驗.第3 - 21部分:垂直束狀電線或電纜垂直火焰蔓延的試驗. a f r類 -
Abstract : the derailment safety evaluation test and evaluation standard f or railway cars running on curve in poland are described
文摘:介紹波蘭鐵道車輛在曲線上運行的脫軌安全性試驗及評定標準。 -
With the development of the network and the multi - processor system, the research, simulation and the impemeni of the system - level fault diagnosis which is the very important means to increase the reliability of the system, are becoming more and more important. on the system - leve1 fault diagnosis, based on the group theory of system - level fault diagnosis that has been put forward by pro f zhang, the paper constructs newly the theory bases, improves on the matrix method, reinforces and consummates group arithmetic of all kinds of test mode, for the first time, analyses and discusses the equation solution of all kinds of models, so al1 the consistent fault patterns ( cfp ) could be found, straightly and high efficiently, even if the sufficient and necessary condition of t - diagnosable is dissatisfied and the complexity of system - level fault diagnosis is greatly decreased, especialy in strong t - diagnosabl6 system. last the simulation system ' s function has been extended and the application hotspot and the development trend have been disscussed
本人在張大方教授等人提出的基於集團的系統級故障診斷的理論基礎上，重新構建了系統級故障診斷的理論基礎，定義了系統級故障診斷測試模型的三值表示；改進了系統級故障診斷的矩陣方法，重新定義了測試矩陣、鄰接矩陣、結點對、結點對的相連運算、極大準集團和斜加矩陣，由此能直觀、簡便地生成集團和極大獨立點集；補充和完善了各類測試模型的系統級故障診斷的集團演算法，通過定義集團測試邊和絕對故障集，簡化了集團診斷圖，由此能較易地找到所有的相容故障模式，即使不滿足t -可診斷性，大大減少了系統級故障診斷的復雜度，尤其是對強t -可診斷系統；首次分析探討了各類測試模型的方程解決，由此從另一角度能系統地、高效率地求出所有的相容故障模式（ cfp ） ：擴充了系統級故障診斷模擬系統的功能，快速、直觀和隨機地模擬實驗運行環境，進行清晰和正確的診斷，同時提供大量的實驗數據用於理論研究，優化演算法和設計。 -
The results of test and theoretical calculation indicate that the friction device does not slide under minute earthquake, thus the control effort of f - ved corresponds with ved, and the action of frd is the same as pure brace. when disastrous earthquake occurs, the viscoelastic material reaches its shear limits and the friction device begins to slide, so the control effort of f - ved is the best
試驗結果和理論計算結果表明，在多遇地震下摩擦機構不起滑，粘彈性-摩擦阻尼器的減振效果和純粘彈性阻尼器相當，而摩擦阻尼器的作用相當于純支撐；在罕遇地震下粘彈性材料達到剪切極限，摩擦機構起滑，故粘彈性-摩擦阻尼器的減振效果最好。 -
By determining technological parameters of epoxy insulation parts impregnated by 7122 - 1b - f electric varnish, technological process and analysis method of orthogonal test design are presented in this paper
本文通過確定7122 - 1b - f絕緣漆浸漬環氧絕緣零件的工藝參數，介紹了正交試驗設計的工作流程和分析方法。 -
During the modeling of technological designing, sas release6. 12 statistic analysis software are applied on correlation and stepwise regression for cocoon - cooking parameters and material data of past years. the significance test and f test are used to analyze the result. we constituted the primary model of cocoon - cooking technique
工藝設計建模過程中，利用sasrelease6 . 12統計分析軟體對歷年的煮繭參數和原料繭數據進行相關分析和逐步回歸分析，對分析結果進行了顯著性檢驗和f測驗，建立了煮繭工藝的初步模型，並結合一些制約因素進一步修正，以期達到最合理地利用原料、設備和人力，並可通過優化設計獲得工藝設計的最佳參數組合，得到最優工藝模型。 -
Developed the theory and method to distinguish the stable areas from changing areas using the f " test and t " test
提出利用f檢驗和t檢驗劃分乾旱區植被穩定區和變化區的原理和方法； 7 -
By using quantitative ( f - test, correlation analysis and questionnaire ) and qualitative ( interview ) research methods, we observed the teaching of immersion musical appreciation and it ' s results concerning children, teachers and parents. the followings are the results we obtained : in respect to children : the immersion teaching method : l. to made imagine and abandon. 2. deepened their impression of music 3
論文運用定量（音樂能力測驗的方差分析、相關分析和問卷調查）和定性（訪談、課堂觀察）的研究方法，對幼兒音樂浸潤式欣賞教學進行分析、研究，發現在短短地3個月時間里，教學取得了令人驚喜的效果。 -
Our simulation results show that for high positive errors correlation cases, these new tests have lower type - 1 error and large power than modified f - test
模擬結果表明，當誤差正相關程度較高時，兩種新檢驗在具有較小的第一類錯誤概率的同時，具有較大的功效。 -
In this paper two new test statistics by using matching the first three moments approach are proposed to approximate fgls ( ) by x2 and f variables. a comparison with modified f - test by wu et al ( 1988 ) is completed
本文用「前三階中心矩相等」法，提出了兩種新檢驗，分別用卡方統計量和f統計量去逼近（ f _ （ gls ） （ ） ） ，並與wu ， holt和holmes （ 1988 ）提出的修正f檢驗進行了比較。 -
However, two - stage estimates of regression coefficients corresponding to these two estimates have approximate equal mean square error. for testing linear hypothesis about regression coefficients, banerjee and magnus ( 1997 ) studied the sensitivity of f - test sta, tistic ( fgls ( ) ) based on generalized least square estimate caused by variance parameter in general case and proposed sensitivity statistic and its distribution
關于回歸系數的線性假設檢驗問題， banerjee和magnus （ 1997 ）在一般情況下從理論上研究了方差參數對基於廣義最小二乘估計的f -檢驗統計量（ f _ （ gls ） （ ） ）的種種影響，提出了敏感性的概念，並給出敏感統計量的形式及其分佈。
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