有效周期性 的英文怎麼說

中文拼音 [yǒuxiàozhōuqīxìng]
有效周期性 英文
effective periodicity
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 周 : Ⅰ名詞1 （圈子; 周圍） circumference; periphery; circuit 2 （星期） week 3 [電學] （周波的簡稱） c...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 有效 : effective; valid; efficacious
  1. Based on the analysis of the beat frequency signal, the expression of the beat frequency phase is deduced. the expression indicates physics meanings of quantities to be detected and supplies theoretical bases for detection methods. by using two - dimensional fft, the range and velocity information of target is got out from the echo. according to the periodicity range ambiguity of symmetrical pulses in fmpcw, the processing method of sliding time window is used

    通過對差頻信號進行的分析，得出了差頻相位的具體表達式，表現出了要檢測的各量的物理意義，對檢測的方法提供了理論依據。利用二維fft方法，可以有效地提取回波中目標的距離與速度信息。對于fmpcw信號由於均勻脈沖產生的周期性距離模糊的問題，採取時間波門的處理方法。
  2. The results of simulation indicated speech signal processed by the optimum algorithm presents obvious periodicity in time domain, and effect of the formant is removed or restrained effectively in frequency domain

    處理后的語音信號在時域上表現出明顯的周期性特徵，同時在頻域上也觀察到聲道的共振峰結構影響得到消除或有效的抑制。
  3. The iterative learning control has been raised as a new control concept. by correcting the current control command using the previous system error data instead of the exact system parameters, iterative learning control can effectively suppress the vibration of the highly periodic system

    迭代學習控制不需知道系統的具體動力學參數，只要系統運動具有一定周期性，它便能利用系統先前的控制經驗和輸出誤差來修正當前的控制信息，從而達到良好的控制效果。
  4. At present, people usually use birefrigence and quasi - phase - matching methods to achieve higher effiency in the process of conversion. a significant advantage of quasi - phase - matching method is that the interaction is occurred through the largest element of the x ( 2 ) tensor ; the period of optical superlattice can be designed randomly, and any interaction can be matched without walk - off angle ; they are fitted to be used in frequency conversion of lower power especially. the quasi - phase - matching method has some advantages over birefrigence method, improving the efficiency of frequency conversion ; the range of frequency conversion covers its whole transperant wavelength

    由於準相位匹配技術有其獨特的優勢，可以利用非線性光學晶體的最大二階極化張量，如ppln 、 pplt 、 ppktp用的非線性極化張量都是d _ （ 33 ） ，其有效非線性系數高出普通非線性光學介質（如bbo 、 lbo 、 ktp ）一個數量級，而且可以人為靈活設計調制周期，通過周期設計其頻率變換范圍可以覆蓋準相位匹配介質的整個透明波段，選擇無走離效應，解決了常規pm難以解決的問題，拓寬了非線性晶體的應用范圍，極大地提高了頻率轉換效率，已成為非線性光學材料和固體激光器的研究熱點之一。
  5. First of all, the paper introduces the overall structure of the mac protocol using the multi - hop communication mode, to fulfill the requirement of wsn in collision avoidance, energy efficiency and scalability to the change in network, bandwidth utilization, latency, throughout and fairness

    協議採用周期性睡醒機制、 rts / cts的握手機制、適應性偵聽以及消息傳輸等機制，在節省能量的總前提下，有效地減少了延遲、避免沖突，保證網路流量，與傳統的數據鏈路層協議相比，具有明顯的優越性。
  6. Random process theory is a kind of effective mathematical tool to handle random vibration problem. through frequency spectra and time domain analysis for random course, the seemed complex vibration time - history can be transferred to trigonometric function series, thus makes it have certain periodic feature

    隨機過程是處理隨機振動問題的一種有效的數學工具，通過對隨機過程進行時域分析和頻譜分析，可以將看似非常復雜和毫無規律的隨機振動表示為三角函數的級數形式，從而使其具備了一定的周期性特徵。
  7. Abstract : the vibration solution of a massive spring system is presented, the effective mass of a spring is derived. the approximate period of the vibration is given

    文摘:給出了彈簧質量不可忽略的彈簧振子系統的振動解，導出了彈簧的有效質量的漸近級數表達式，指出振動呈擬周期性
  8. When the frequency approaches zero, the factor approaches zero correspondingly ; 2 ) the amplitude of interaction factors changes with the incident angle of rayleigh waves and reaches maximum when is zero. moreover, with the increase of, the wave period shortens apparently ; ( 3 ) the amplitude of interaction factors decreases as the pile spacing increases and approaches to zero when the pile spacing is 15 ; 4 ) the amplitudes of interaction factors increase clearly with the increasing stiffness ratio of pile to soil ; 5 ) the lat eral seismic response of fixed - head pile groups is much smaller than that of free - head pile groups. moreover, the pile - group effects induced by rayleigh waves can be neglected ; 6 ) the lateral seismic response of piles at different location differs from each other

    得到了以下結論： 1 ）樁的相互作用因子隨頻率呈周期性變化，在振動頻率比較低的情況下，樁的橫向相互作用因子也較低，當頻率趨近於零時，相互作用因子也趨近於零； 2 ）樁的相互作用因子的幅值隨瑞利波入射角度的變化而變化，在= 0情況下幅值最大，且隨入射角度的增加，波動的周期明顯縮短； 3 ）樁的相互作用因子的幅值隨著樁與樁間距的增加而減小，至s d = 15時，樁的相互作用因子基本趨近於0 ； 4 ）在頻率比較低時，相互作用因子幅值隨樁土相對剛度比的增加而顯著增加； 5 ）樁頂固接可以有效地降低群樁的橫向地震響應幅值，由瑞利波產生的群樁效應可以忽略不計； 6 ）群樁中不同樁位的樁的橫向地震響應是不同的，每根樁所在的樁位對其橫向地震響應有很大的影響；刀樁數的增加並不能減小樁的橫向動力響應。
  9. The statistic of wavelet transform coefficient algorithm can solve the periodic noise, high - energy noise and some non - gauss noise simply and effectively ; bi - spectrum can acquire more information from the original signal than power - spectrum, detect more information except from range and restrain the gauss noise. short - time speech signal can be considered as stationary and with periodic non - gauss signal, so we can make use of bi - spectrum to obtain the speech character and separate the speech and noise and detect morse telegraph signal ; complex number spectrum variance algorithm is put forward based on the deeply observing speech data, it is a new algorithm, experiment show that it is simple, effective

    統計演算法在解決周期信號、高能噪聲和高斯信號方面有獨特之處，能簡單有效提取以上噪聲的特徵;雙譜能夠提供比功率譜更多的有用信息，有效地檢測信號幅度之外的其它信息，並能有效抑制高斯噪聲，短時語音信號一般認為是平穩且有一定的周期性的非高斯信號，因而可以利用雙譜來提取語音信號特性並實現信噪分離;復數譜方差演算法是在對語音信號進行深入觀察和分析的基礎上而提出來的一種全新的語音特徵提取方法，此方法簡單而有效的提取了語音、噪聲的特徵以及檢測莫爾斯信號，基於實驗表明，該演算法取得了很好的效果。
  10. We also analyze the influence of the boundary condition 、 safety distance and deceleration probability to the traffic flow. finally, we propose an crossroad modle. this model is made up of one main road and one branches ： traffic with lights placed on the crossing, vehicles " breaking while running and turning to other direction while jamming. we investigate the velocity and flow of the model when the initial density, the brake and turning probabilities, the green to signal ratio are changed. then the reasons causing all the kinds of phenomena are analyzed

    最後研究了周期性邊界條件下的十字路口的ca模型，該模型由一條主幹道和一條支道組成，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中對突發事件發生反應的剎車，路口的車輛可以轉向等各種實際交通行為，並通過計算機模擬，研究模型在改變車輛的初始密度、剎車概率、轉向概率、紅綠燈信號的綠信比等各種情況下支、主幹道車輛的速度、流量的變化，並分析在各種情況下交通狀況的成因，提出改善交通的有效措施。
  11. The performance of modulators employing mqw is governed by the quantum confined stark effect. in order to simplify the analysis of mqw, we obtain an explicit formula concerning the correlations between the gaas / gaalas quantum well widths of finite potential barrier structure and those of infinite potential barrier structure under the condition that the ground state energies are equal at zero bias states. then the transfer matrix method is used to investigate the optical field distribution in the mqw waveguide based on five - step asymmetric coupled quantum well structure that is really used in the modulator

    本論文首先根據量子限制stark效應，發展了等效寬度思想，提出了把單量子阱結構的有限深勢阱的分析轉化為無限深勢阱模型的顯式公式，從而大大簡化了電場下量子阱結構的分析；接著利用轉移矩陣，把周期性的量子阱結構簡化為三層結構，得到了實際採用的非對稱三阱結構量子阱的場分佈，並討論了量子阱結構的偏振特性。
  12. A source routing framework is proposed to route traffic flows proactively over multiple paths, which tries to optimize routes for long - lived flows based on dispersity routing ; based on mathematical analysis, our approach disperses incoming traffic flows onto multiple paths according to path qualities. long - lived flows are detected and migrated to the shortest path if their qos could be guaranteed there. suggesting non - disjoint path set, four types of dispersion policies are analyzed, and flow classification policy which relates flow trigger with link state update period is investigated

    提出一種以業務量內在特性為基礎的前攝式多路路由演算法：以對業務量的內在特性分析為基礎，該方法在多路發送數據流的同時檢測非最短路徑上的長流，而後在保證服務質量的前提下將長流遷移到最短路徑上傳輸；前攝式多路路由使用以路徑質量評價為基礎的業務流分佈方法有效提高網路吞吐量，通過周期性的路徑質量評價適應時變網路狀況；模擬實驗表明，該方法可以有效提高「盡力而為」方式下的網路服務質量和資源利用率；浙江大學博士學位論文3
  13. In this thesis, author briefly introduces basic theory of fdtd method at first, and research the method for analysing fss : the finite difference time domain combined with periodic boundary condition ( pbc ) and absorber boundary condition ( abc ) becomes the accurate and efficient tools for analysing frequency selective surfaces

    其中時域有限差分法（ fdtd ）是求解麥克斯韋微分方程的直接時域方法。本文從fdtd的基本演算法原理出發，研究了頻率選擇表面的特性分析。其中包括了fdtd方法與周期性邊界條件、吸收邊界條件相結合，形成分析各種周期性結構準確、有效的通用工具。
  14. On the basis of the theory and the experiment, the paper has synthetically analyzed the anti - interference characteristics of the hardware method ( differential balance ) and software method ( digital filter ). the paper has presented that these two methods have some disadvantages respectively. based on this fact, a new method has been presented. hardware method can be use to restrain periodical interference, and software method can be use to discriminate pulse polarity

    從理論和試驗兩方面，綜合分析了硬體措施（差動平衡法）和軟體措施（數字濾波法）抑制干擾（包括周期性和脈沖性干擾）的方法和特點，指出了兩種方法各自存在的缺點，在此基礎上提出了用硬體方法抗周期性干擾，用軟體抗脈沖性干擾的新方法，並通過試驗證明，該方法可以抑制周期性干擾，有效地鑒別出外部干擾信號和內部局部放電信號。
  15. For a class of quasi - one - dimensional cluster, we study the effect of side spins on the spin - spin correlation on chain, our calculations show that the side spins added in the same sublattice can effectively strengthen the spin - spin correlation in large distance region and make the change tend to flat

    計算證明，側自旋加進相同的子格中能有效地加強自旋關聯使得它在長距離范圍內的變化趨于平緩，而周期性地加入側自旋可以在基態中建立磁性長程序。
  16. On the basis of analyzing the present production scheduling tactics and production situation, a scheduling tactic with frozen period based on the periodicity and event - driver is put forward. an effective reverse heuristic scheduling algorithm is developed and implemented

    在分析現有生產調度策略和實際生產情況的基礎上，提出一種基於周期性和事件驅動的具有凍結期的調度策略，研究並實現了一種有效的逆序啟發式調度演算法。
  17. This paper takes the example for hulunbeier league, uses qualitative and quantitative methods, probes the following problems : estimation and disposal on investment cost and running expenses of grassland construction investment project estimation of project earnings principles of project borrowings and appliances of financial appraisal indexes and financial statements. based on the above research, conclusions are as following : if previous project period is longer than that of milti - year increment herbage, fixed investment must be considered which is resulted from renewed herbage when cost is estimated ; changes of period of operating cost resulted from renewed herbage and output changes must be considered when cost being estimated ; periodical output changes of herbage not only lead to cost changes, but also changes in project incremental income and relative cost indirectly ; devising suitable project borrowings is beneficial to favorable implementation on every project ; aiming for the characters of grassland construction investment project, selecting practicable financial appraisal statements and financial indexes can make calculating of financial beneficial of grassland construction project scientifically

    本文的研究主要以呼倫貝爾盟草地建設項目為例，基於案例進行定量和比較分析，探討草地建設項目在投資成本和營運成本的估價和處理、項目收益的估價、項目籌資方案的確定原則和項目財務評價指標與評價報表應用方面的特殊問題，得出如下結論：必須在成本估價時考慮牧草的更新所導致的固定投資；在進行成本估價時必須考慮由於牧草的更新和產出變化所導致的經營成本周期性的不同；多年生牧草在產出上的周期性變化不僅會導致成本上發生變化，也會導致項目新增收入的變化和與收入相關的成本間接發生變化；設計合情合理的籌資方案，有利於保證項目中的每一個子項目順利執行；針對草地建設投資項目的特點，選擇適用的財務評價報表和財務評價指標才能更科學地測算草地建設項目的財務效益。
  18. ( 1 ) staff performance management system is not only a periodic cycle but also a general management tools and is rooted in a deeply idea which includes target management idea, human management idea, motivation idea and performance spirit idea etc. ( 2 ) the staff performance management system includes performance target system, performance improvement system, performance evaluation system and salary development system

    （ 1 ）員工績效管理不僅僅是一個周期性的循環過程，也不僅僅是一個通用的管理工具，更主要的是在於其內在的深層理念，這些理念主要有目標管理理念、人本管理理念、激勵理念和績效精神理念等。 （ 2 ）在這些內在理念的基礎上建立的員工績效管理系統包括相互獨立又相互銜接的四個子系統：績效目標體系、績效改進體系、績效評估體系和薪酬發展體系。
  19. Theoretical proof and simulation suggests that this constructive function has stronger heuristic power, and has better effectiveness for scheduling dag a task - replication based heuristic static scheduling algorithm is also proposed ( namely processor pre - allocation algorithm for dag tasks, ppa ), utilizing the aforementioned heuristic function aimed at rtrpmt

    通過理論證明與模擬實驗表明：本文構造的啟發函數具有較強的啟發能力，對dag圖的調度具有較優的效果。利用本文所構造的啟發函數，針對相關周期性多任務，提出了一種基於任務復制的啟發式靜態調度演算法（ dag任務圖的處理器預分配演算法ppa ） 。
  20. This system has a lot of the prominent characteristics such as simple structure, and good efficiency, especially adapting to the large, middle power machine equipments that have the big qualities, periodicity, in the short time, constantly accelerating and applying the brake. it is very remarkable in energy - saving

    二次調節靜液傳動系統具有許多顯著的優點，比如：較為簡單的結構，並可得到較高的效率，特別適用於那些負載質量較大、具有周期性、在短時內需不斷加速和制動的大中功率場合（如車輛系統和升降系統） ，其節能效果十分顯著。
分享友人
分享到 Line

分享到臉書