非學得動機 的英文怎麼說
中文拼音 [fēixuédedòngjī]
非學得動機
英文
unlearning motive-
For obtaining the numeral solutions of round elastic plates in axisymmetrical deformation with varying - thickness in nonlinear deformation in the unsteady electromagnetic field and mechanical field, by establishing the equations of motion, the equations of distortion, the equations of lorentz force, the equations of electronic dynamic mechenical, and adopting iterative method, we gained the nonlinear magneto - elastic calculation method and outcome of current - carrying shell, and gained the influencing degree toward mechanical parameter of varying thickness round ferreous plates in the electromagnetic field and mechanical field
摘要為了獲得內邊界固定的環形導電薄板在均布力與橫向磁場作用下的變形問題的數值解,通過建立運動方程、變形方程、電動力學方程和洛侖茲力方程,運用迭代法得出了載流板殼的非線性磁彈性的計算方法和結果,以及機械場、電磁場對鐵質變厚度圓板各力學參量的影響程度。Emory neurologist jorge juncos says that one incentive to get involved with the project was to gain understanding in case american health care reform necessitates lower - cost procedures
艾茉利大學的神經科醫師宗可斯說,參與這項計畫的動機之一,是一旦美國的健康醫療制度有所改革、非得採取低成本的做法時,可以事先有所準備。According to the least twin multiplication to calculating the sensitivity index in several water production functions. thus, the writer obtains the fitted the value of the sensitivity index and the varied rule. at the same time, the writer puts forward a new method named rag a ( real coding based accelerating genetic algorithm ) and combines raga with dpsa to calculating the best irrigation system under the non - sufficient irrigation of well irrigation rice in sanjiang plain
根據《隨機水文學》理論中的時間序列分析法,建立了適合三江平原井灌水稻需水量預報的非平穩時序隨機模型;通過分析降雨隨機特性,選定季節性時序隨機模型,建立了適合三江平原井灌水稻降雨預報的月平均降雨模型;根據最小二乘法,計算出幾種常用水分生產函數中的敏感指數及敏感系數,進而得到三江平原適宜採用的水分生產函數漠型及模型中敏感指數的變化規律;本文提出遺傳動態規劃法( raga ? dp ) ,即採用改進的基於實數編碼的加速遺傳演算法( realcodingbasedacceleratinggeneticalgorithm ,簡稱raga )與動態規劃法( dpsa )相結合,推求非充分灌溉條件下三江平原井灌水稻的最優灌溉制度。Virtual axis machine tool ( vamt ) is characterized by the simple structure, high rigidity, large load handling capacity, and non - accumulation of position error. as the supplement of series machine tool ( smt ), vamt has become the focus of research in machine tool, and plentiful research achievements have been acquired in mechanics, kinematics, dynamics, but few in kinematic control
虛擬軸機床具有結構簡單、剛度大、承載能力強、位置誤差不積累等特點,在應用上與串聯機床成互補關系,現已成為機床領域的研究熱點,並在機構學、運動學和動力學研究上取得了大量成果,而對運動控制的研究非常少。The control of beam halo - chaos becomes a critical problem in the development of high intensity accelerator. efforts to remove the halo by collimation have been largely unsuccessful since the halos almost always regenerate. the mechanisms of halos are complex, such as nonlinear resonances and chaotic behavior etc. considering this, professor fang jin - qing who works in china institute of atomic energy pointed out that the theory of chaos control can be used to control beam halos. he presented the method to control halos by using nonlinear functions, which means nonlinear function g is added to the right of ion radial self - edlctric force equation and some nonlinear function are selected to control beam halos in simulations. in paper [ 69 ], controllerg = - 0. 15sin ( rmax - am ) 2 was used and the halo intensity was decreased to 0. 1078, the halos are removed partly
束暈?混沌的控制是新一代強流加速器研製的關鍵問題,隨著強流離子束應用前景的日趨廣闊而日益成為研究的熱點。傳統機械限束器因無法解決束暈的再生而收效甚微,因為束暈的形成有著其內在動力學機制?非線性共振以及混沌等。基於此,中國原子能科學院研究員方錦清將混沌控制的理論和方法開創性的運用於束暈?混沌的控制上,提出了控制束暈?混沌的非線性控制策略,即在粒子徑向所受束自生場力方程的右邊加上非線性控制函數g :並選取一些非線性函數如等進行了控制的模擬研究,將束暈強度控制在0 . 1078左右,取得了初步的控制效果。On the contrary, in - parallel actuated micromanipulators have the advantages of more rigidity and accuracy, higher load capacity, and simple inverse kinematics, therefore they can be used to replace conventional serial ones to meet the rising need for higher precision in this dissertation, position kinematics of a micromanipulator with serial - parallel structure is studied
相反,並聯機構具有運動鏈封閉、剛性好、無關節誤差累積、運動精度高,且運動學逆解求解非常簡單等優點,使得這類機構非常適合於用作微操作機器人機構,因而,研究基於並聯機構的微操作機器人系統具有現實的工程意義。Comparing and analyzing the synchronous control strategy, which brings up the new method to control the double un - symmetry jars proceed synchronously with the combination of proportional valve and servo valve, which forms closed loop control ; basing on the above methods, models are made to get mathematics models of position control system and to analyze system model theoretically by using pid controller, we can realize regulating parameters, minimizing synchronous errors and enhancing the dynamic performances ; the simulink tool box in matlab software is used to imitate the system according to the model, which not only makes the result visual and easy to adjust the parameters in interactive way but also lets us understand the effects of different parameters and optimizes the dynamic properties. the theory of plc control in dshp is discussed after advanced understanding of the system movements. hardware design and general regulation are given on the base of siemens company products s7 - 200 plc
本文根據大量的國內外文獻,對研配液壓機的工作原理及設計結構進行了簡介;對位置同步的控制方法進行了比較分析,提出比例閥和伺服閥復合控制的閉環結構來對非對稱雙缸進行同步控制電液比例同步控制方案;在此基礎上著重對比例閥控非對稱缸建模,最後得到位置控制系統的總體數學模型,從理論上對同步系統動態特性進行了分析,並用pid控制器進行參數整定,減小雙缸同步誤差、提高系統的動態響應性能;其中控制性能的分析藉助于matlab軟體中的simulink工具箱,由已建立的數學模型形成模擬模型,得到可視化的模擬結果,從而利於交互方式下調整參數,了解不同的參數對系統的影響,優化同步系統的動態性能;在深入了解系統的動作特性后,對plc控制研配液壓機的原理進行了探討,針對siemens公司s7 ? 200型plc給出了硬體設計的總體規劃,編制出研配液壓機動作控製程序,在編程中著重研究位移傳感器與plc的通訊、雙缸同步運行的pid控制在plc上的實現及bcd碼撥盤輸入程序的植入問題。In order to investigate the unsteady flow frequency domain performances of an axial flow compressor at different mass flow, rotating speed and blade row spacing, plus inlet flow distortion, and considering aerodynamic characteristics and stability of the compressor, the low speed research compressor ( lsc ) at college of energy and power in nuaa is used to carry out the experiment studies. a large amount of test data has been gained through dynamic pressure transducers embedded in the stator blades at the tip, middle and hub section, then fast fourier transform algorithm ( fft ) is applied to calculate the frequency data
為探討軸流壓氣機在工作流量、工作轉速及動?靜葉排軸向間距變化時的葉片排流場非定常頻譜特性變化規律,並耦合進氣畸變的影響,同時與壓氣機氣動性能和氣動穩定性相關聯,作者利用南京航空航天大學能源與動力學院的低速大尺寸軸流壓氣機( lsc )試驗器,採取在靜子葉片表面埋入動態壓力傳感器的實驗方法,對葉尖、葉中和葉根三個截面的動態壓力進行了測量,獲得了大量的可靠的實驗數據。The study paid attention to the change of teacher ' s sense of teaching efficacy teaching motivation and occupational stress under such realistic background. by analysis and explanation of investigation data, the study concludes the results as follows : 1 after implement of curricular reform, general teaching efficacy of teachers who have joined curricular reform compared to their past or to of what teachers who have n ' t joined curricular reform goes up significantly, while personal teaching efficacy ( significantly ) declines ; 2 after implement of curricular reform, intrinsic motivation of teachers who have joined curricular reform compared to their past ( significantly ) presents descending trend, while their outer motivation ( significantly ) rises apparently. so that their intrinsic motivation and outer motivation are significantly much higher than of what teachers who have n ' t joined curricular reform ; 3 after implement of curricular reform, occupational role and personal stress of teachers who have joined curricular reform compared to their past or to of what teachers who have n ' t joined curricular reform goes up significantly, while their relaxation of personal resource significantly declines, but have no remarkable difference at other aspects ; 4 the sense of teaching efficacy teaching motivation and occupational stress of teachers which belong to different characteristic and category exists remarkable difference before and after new curricular reform ; 5 teachers " sense of teaching efficacy teaching motivation and occupational stress tie together tightly, while the interaction of teaching motivation and occupational stress is prominence, occupational stress directly influences teaching motivation, and indirectly influences the sense of teaching efficacy
通過對調查數據予以分析和說明,本研究得到如下結論: ( 1 )課程改革以後,參與課改的教師無論與自身縱向相比,還是與未參加課改的教師橫向相比,其一般教育效能感顯著上升,而教師的個人教學效能感則(顯著)下降; ( 2 )課程改革以後,參與課改的教師與自身縱向相比其內部動機有較為顯著的下降趨勢,外部動機則有顯著地上升趨勢;其內部動機和外部動機都(顯著)高於未參加課改的教師; ( 3 )課程改革以後,參與課改的教師無論是與自身縱向相比,還是與未參與課改的教師橫向相比,其「職業任務」和「個體緊張反應」方面均呈現(非常)顯著地上升趨勢,而在「個體應對資源」方面除休閑是顯著降低外,其餘無顯著的差異; ( 4 )不同特徵和類別教師的「教學效能感」 、 「教學動機」和「職業緊張應對」在課改前後的變化狀況上存在(顯著)差異; ( 5 )教師教學效能感、教學動機和職業緊張應對密切聯系,教學動機與教學效能感相互作用顯著;而職業緊張應對直接顯著影響教學動機,間接影響教學效能感。Being a local approximating neural network, cerebellar mode arculation controller ( cmac ) has the distinctive ability of disposing nonlinear mapping and building nonlinear relationship. the paper proposes a cmac - based control scheme in which learning and controlling are alternately processed. the method is applied to the ac servo control system and obtain high quality output
作為局部逼近神經網路之一的小腦模型關節控制器( cmac )對處理非線性映射、建立非線性關系具有獨特的優點,本文將cmac應用於交流伺服電動機系統的控制,採用邊學習邊控制的工作機制,取得了良好的實驗結果。Firstly, the performance is calculated at the design point of the ws - 9 aeroengine by using the numerical model established. secondly, after obtaining the performance coupling parameters, the steady - state performance of the non - designed points is caculated. third, respectively make the limitation of rotate speed of the high pressure rotor and low pressure rotor equal to corresponding parameters of designed point, after the data calculated compared with those of designed point and actual testing of the manufactory, the error is obtained
首先,用所建立的發動機數學模型計算了發動機在設計點的各項性能,第二,根據發動機各部件的耦合特性參數計算得到發動機在非設計點狀態下的各項穩態性能,第三,分別設定限制高壓轉子轉速和低壓轉子轉速逼近設計點條件下對應的參數,將計算得到的性能數據與設計點性能進行了比較,並將非設計點的計算結果與生產試車過程實測的性能數據進行對比,給出了該穩態模型計算結果與實際試車數據的誤差。With the development of electronic technology, more and more coupled systems of electricity - magnetism - mechanism are used widely. these coupled systems have abundant non - linear dynamics phenomena. in order to improve stability and security of operation of these systems, we ought to study these systems in detail
隨著電子技術的發展,大量的電、磁、機械耦合系統得到廣泛應用,這類機電耦合系統存在著豐富的非線性動力學現象,對其進行深入地研究,掌握系統中電路子系統和機械子系統及全系統的動力學規律,可以提高系統運行的穩定性及安全性。Stochastic resonance ( sr ) is a counterintuitive phenomenon of nonlinear dynamic systems wherein the noise ( stochastic force ) plays a constructive role. this phenomenon has then attracted much attention in the past two decades, and it has been observed that sr can occur in a wide variety of systems
隨機共振現象是非線性動力學系統中的一種反直觀的現象,當一個非線性動力學系統受到一個隨機力(噪聲)的激勵,也就是系統輸入具有一個連續的頻譜,系統和輸入的隨機激勵之間會產生一種協同作用,使得系統輸出的性能有所提高,這一現象被稱為隨機共振。Based on the theory of mechanical optimization and finite element analysis, elbow - bar mechanism of the mp1040b moulding machines made by beiren group is investigated in the dissertation. firstly, a kinematic model representing the bar mechanism is built and the nonlinear system of equations is solved through the method of gradient. meanwhile, the angular displacement, angular velocity, angular acceleration and the corresponding curves of each component in a motion period are obtained
本文以北京人民機器廠mp1040b型模切機肘桿機構為研究對象,以機械最優化理論和有限元技術為基礎,首先對模切機肘桿機構建立數學模型,通過梯度法求解此非線性方程組,並得出機構在一個運動周期中各構件的角位移、角速度、加速度等運動參數及曲線。Non - isothermal kinetics study showed that the mechanism of zno - al2o3 solid - phase reaction was well fitted with cater ' s equation. active energy of solid - phase reaction derived from the experiments by the methods of ozawa equation avoiding the function of reaction mechanism was about 63. 48kj / mol, which was almost the same value of active energy deduced from cater ' s equation
非恆溫動力學分析表明:鋅鋁尖晶石的固相反應機理符合卡特方程;採用卡特方程的機理函數和避開反應機理函數的ozawa方程得出的活化能分別為64 . 39kj mol和63 . 48kj mol ,兩值十分接近。( 4 ) with the help of the experimental samples, a drnn identifier is trained off - line utilizing the compound identification method. the nonlinear dynamic model is achieved for the experimental mechanism
4 .在系統辨識方面,本文以實驗輸入輸出數據作為訓練樣本,採用復合辨識方法離線設計了動態遞歸神經網路辨識器,獲得了彈性連桿機構的非線性動力學模型。With the development of computer technology and the advancement of numerical calculation, computational fluid dynamics ( cfd ) has been applied widely in simulating engine ' s chemical non - equilibrium flowfields and has emerged as an extrem ely valuable and cost - effective engineering tool in engine design and flowfield analysis
隨著計算機技術的發展和數值計算方法的進步,計算流體力學( cfd )在發動機的燃燒化學非平衡流場的數值計算研究方面得到了廣泛的應用,並逐漸成為發動機設計和流動分析的一種經濟、有效的手段。Abstract : explained the dann ( dynamic artificial neural network ) in terms of b uilding model and predicting of time series, presented for the first tim e a new kind of dann anhn ( artificial neural holonetwork ) for predict ing the coming trend of nonliner dynamic time series, gave its mathem atical model and its topological construction
文摘:從時間序列建模與預報的角度討論了動態神經網路,首次提出了一種新的實現非線性動態時間序列預報的動態網路結構全息神經網路,給出了其數學模型和拓撲結構,並將其應用到了機械設備振動烈度值的預測上,取得了令人滿意的效果。The establishment of efficient traffic models to reveal fundamental traffic characteristics is an essential requirement in the design, planning and operation of transportation systems. cellular automata ( ca ) are non - liner dynamical system in which space, time and state values are discrete, using simply rules, ca has attained very good results in simulating several complex natural phenomena and physical problem. that enlightens people to simulate traffic flow by ca method. urban major road performs critically on dredging traffic, therefore, it is very necessary to study the control and manage for urban main - road
交通系統的規劃、設計和運作要求有能反映交通現象基本特徵的交通模型。元胞自動機是空間、時間和狀態都離散的非線性的動力學系統,它用簡單的規則在計算機上模擬各種復雜的自然現象和物理現象,並取得了很好的結果,啟發人們用它來模擬交通問題。城市主幹道擔負疏導交通的重要作用,因此對主幹道交通流的控制與管理的研究是非常必要的。Seen from the investigated statistics of non - english majors at the east china univeristy of politics and law and newly - built taizhou university, two findings are as follows : 1 ) there is statistical difference between two universities, mainly being shown in three aspects such as communication apprehension, fear of negative evaluation and class anxiety ; 2 ) the key factors contributing to anxiety resources of students at taizhou university involve individual factors like low self - perceived proficiency, poor english learning motivation and empathic ability and external environment factors like classroom activities and the teachers
從華東政法大學和臺州學院兩類高校非英語專業學生調研數據來看,可以得出以下兩個結論: 1 、兩類高校的英語焦慮水平有顯著差異且主要表現在英語使用焦慮、負評價恐懼和課堂焦慮三個方面; 2 、影響臺州學院學生英語焦慮的主要因素是自我效能感低、英語學習動機弱、移情能力差等學習者個體因素和以課堂活動、教師為主的外在環境因素。分享友人