符號計算系統 的英文怎麼說

中文拼音 [háosuàntǒng]
符號計算系統 英文
symbolic computation system
  • : Ⅰ名詞1 (符節) tally (with two halves made of wood bamboo jade metal issued by a ruler to gener...
  • : 號Ⅰ名1 (名稱) name 2 (別號; 字) assumed name; alternative name3 (商店) business house 4 (...
  • : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
  • : Ⅰ動詞1 (計算數目) calculate; reckon; compute; figure 2 (計算進去) include; count 3 (謀劃;計...
  • : 系動詞(打結; 扣) tie; fasten; do up; button up
  • : Ⅰ名詞1 (事物間連續的關系) interconnected system 2 (衣服等的筒狀部分) any tube shaped part of ...
  • 符號 : 1 (記號; 標記) character; sign; symbol; mark; code; notation; expression; denotation; sentinel ...
  • 計算 : 1 (求得未知數) count; compute; calculate; reckon; enumerate 2 (考慮; 籌劃) consideration; pla...
  • 系統 : 1. (按一定關系組成的同類事物) system 2. (有條理的;有系統的) systematic
  1. And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results

    接著,對自適應調制中的通道估問題難點,詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然( ml )估和最大后驗概率( map )估法,針對平衰落通道,我們模擬了map估和ml估的方差與導頻長度的關,模擬結果表明,錯誤方差受多譜勒頻率的變化影響最大,並且對實際的自適應調制,導頻長度的取值超過20個長度時, map通道估明顯優于ml通道估
  2. This paper which starts from the actual needs, directed by the theory of cartology analyses all kinds of requires and functions for dmges, and create the spatial data model of the software system, combining the new generation programming technology, taking the oo software modeling, analysis, design method, it realized the collection, display of digital map data and the building of map denotation library, hi the end, this paper put forward the go - on research in future

    本文從數字地圖制圖的實際需要出發,在地圖學理論的指導下分析了數字地圖圖形編輯的各種功能和需求,並建立了軟體的空間數據模型。結合新一代的機程序設技術,採用面向對象的軟體建模、分析和設方法實現了地圖數據的採集、顯示、編輯、地圖庫的建立。最後提出了需要進一步研究和完善的內容。
  3. This thesis analyzed the error performance of mfsk and mpsk modulator in hf with optimal receiver, studied the shortcoming and strongpoint of several typical short - wave data transmission systems and their performance over fading and intersymbol interference channels. the theory and key technical of adaptive modem is discussed. in the last, an efficient modulation scheme - block coded modulation is introduced into hf radio systems to improve the efficiency of hf data transmission, this paper also proposes a hf data transmission system scheme composed of a block coded modulator and a decision feedback type adaptive equalizer

    本文在對短波數傳兩種常見調制方式fsk及psk最佳解調性能分析的基礎上,討論了幾種採用典型調制技術的短波數傳(如時頻調制、多進制頻移鍵控慢跳頻、 chess)原理、優缺點以及抗衰落和抗間干擾的性能;分析了自適應串列數傳抗短波通道衰落和多徑干擾的原理、關鍵技術;在本文的最後引入一種有望解決短波數傳低效率狀況的調制方式bcm -分組編碼調制,給出了一個採用bcm技術與自適應均衡技術相結合的短波數傳方案,並通過機模擬進行了初部驗證。
  4. This paper based on the hj04a railway signal computer system which is developed by the research institute of microcomputer, hefei university of technology. according to requirement of the interlocking software " s reliability and safety. considered with the software requirement analysis, combining the uml and z, we finally design the interlocking software specification which is completeness, consistency, no redundancy, no different meanings and is consistent with the demand of the system

    本論文針對合肥工大微型機應用研究所研究開發的hj04a鐵路信機聯鎖,根據機聯鎖聯鎖軟體設可靠性和安全性要求,從軟體的需求分析著手,綜合uml一建模語言方法和形式化描述語言z語言的方法,設出完全的、一致的、無冗餘的、無歧義的、要求的聯鎖軟體規格說明書。
  5. Operation layer is the basic core part in elliptic curve encryption system including how to calculate elliptic curve ' s stairs is a large prime or including a large prime gene to ensure elliptic curve to be safe elliptic curve ; in this article safe elliptic curve is chosen by p1363 sae algorithm. besides, how to achieve fast point multiplication will influence the performance efficiency of the whole encryption system ; in this article, for different situations, signed binary method and rolling window method are respectively applied to perform quick operation of elliptic curve ' s point multiplication

    層是橢圓曲線密碼體制實現的最基礎、最核心的部分,包括如何來橢圓曲線的階為大素數或含有一個大的素因子,以保證所選取的橢圓曲線為安全橢圓曲線,本文根據ieeep1363協議的sea演法實現了安全橢圓曲線的選取;另外如何實現標量乘的快速運,將會影響整個密碼的實現效率,本文根據不同情況對橢圓曲線的標量乘法分別採用了帶的二進製法和滑動窗口法進行快速運
  6. Signal layer represent links between the nerve cells, knowledge layer represent rules and reasoning of expert, conception layer is the medium layer and connect signal layer and knowledge layer, therefore integrated symbol computing ability of es with link features of ann into one body to make brain model more intelligent

    刺激層體現神經元的連接,知識層體現專家的規則、推理,從而將專家和神經網路的連接主義兩者有機的結合,並在其基礎上構建了形體的表徵模型、推理方法,實現了形態構成知識的產生,為人腦模型的「智能」能力的實現和應用奠定了基礎。
  7. Through chaos optimization method embedded into the genetic algorithm. the algorithm with the combination the advantages of the genetic algorithm and chaos optimization method which need not the optimal problem function ' s differential and promote the ability of the genetic algorithm ' s locally meticulous search can be obtained with the faster convergence and the greater probability for the global solution. a chaotic sequence is inserted into the search procedure of genetic algorithm, which can overcome premature of the search by genetic algorithm and the speed of convergence is faster than standard genetic algorithm

    對遺傳演法進行了理論分析,並且研究了遺傳演法的設與實現;利用混沌優化方法不依賴于梯度信息的性質,將其與遺傳演法相結合,提出了一種求解連續不可微函數優化問題的混合遺傳演法;基於對于動力的研究,利用混沌序列的遍歷性,將混沌序列引入遺傳演法中,提出一種嵌入哈爾濱工程大學博土學位論文一混飩序列的遺傳演法,該演法有效地克服了標準遺傳演法中的早熟現象,並且具有更快的收斂速度。 」
  8. In this dissertation, with the aid of many types of constructive transformations and symbolic computation, some topics in nonlinear waves and integrable system are studied, including exact solutions, painleve integrability, backlund transformation, darboux transformation, symmetry ( similarity reduction ), conditional symmetry, lax integrable hierarchy, liouville integrable n - hamilton structure, constraint flow, involutive system, lax representation, r - matrix, separation of variables and integrable couplings. chapter 2 and 3 are devoted to investigating exact solutions of nonlinear wave equations : firstly, the basic theories of c - d pair and c - d integrable system are presented

    本文以構造性的變換及為工具,來研究非線性波和可積中的一些問題:精確解(如孤子解、周期解、有理解、 dromion解及compacton解等) 、 panileve可積性、 backlund變換、 darboux變換、對稱(相似約化) 、條件對稱、 lax可積族、 liouville可積的n - hamilton結構、約束流、對合、 lax表示、 r -矩陣、變量分離及可積的耦合
  9. What ' s more, the methods of using external code in labview are elaborated. in addition, an input - optimizing design method is put forward. the simulation result shows that this algorithm produces a marked effect finally, a new design of the control system of adjustable pressure casting is proposed

    然後,提出一種在測試機實現的輸入信法,對輸入的期望信進行處理,在不增加控製程序量和控制迴路周期時間的前提下,使的實際輸出合設要求。
  10. The theory of normal form are used to investigated the normal forms in the four dimensional nonlinear systems with cubic nonlinearities. we give the computing results of maple programs by using the adjoint operator method

    利用共軛運元法和逐項消去法等規范形理論研究了含有三次非線性項的四維的規范形,給出了利用maple推導程序所得到的結果。
  11. These methods have been developed and get wide applications. in recent ten years, directly searching for travelling wave solutions of nonlinear evolution equations has become more and more attractive due to the availability of computer symbolic systems

    近十年來,隨著符號計算系統的飛速發展,非線性演化方程孤波解的解法研究又成為了一個活躍的領域,涌現出了各種「直接方法」或「代數方法」 。
  12. Symbol logic method is unable to guarantee the complement of knowledge description, which leads to complicated deducing process. we introduce fuzzy cognitive map into agent modeling and deducing, substitute symbolic description and inference with simple mathematical computing, achieving agent intelligent decision - making in complex environment

    針對現有邏輯描述方法難以保證知識表達的完整性,推理過程陷於復雜的邏輯演繹的問題,作者引入了模糊因果關的網路模型,基於模糊認知圖理論構造agent推理模型,用簡單的數值代替復雜的表示和演繹推理過程,實現了復雜環境下的agent智能決策。
  13. The dissertation mainly aims at applying several active machine learning strategies to intrusion detection and systematically studies signal analysis techniques of intrusion detection based on statistical learning theory ( slt ), symbol inductive learning theory and genetic learning method. meanwhile, performance comparison and evaluation among intrusion detection techniques based on different machine learning strategies are presented according to computational learning theory and statistical hypothesis test methodology. intrusion detection is regarded as a pattern recognition problem in term of statistical learning theory ; i

    本文的主要工作是將目前幾種有生命力的機器學習策略應用於入侵檢測技術中,論文從入侵檢測的不同視角出發,深入地研究了學習理論、基於的歸納學習理論和遺傳學習方法在入侵檢測信分析中的應用技術,並在可能近似正確( pac )學習框架下,利用學習理論和假設檢驗方法對基於不同機器學習策略的入侵檢測方法進行了性能比較和評估。
  14. So far, there is no effective method for the computation of focus quantities and saddle quantities. compared with the work of other authors, complex nonlinear integrating operation and solving multivariate linear equations are avoided in computation, which are necessary in more usual approaches. the calculation and simplification of focus quantities can be readily done with these formulas and computer symbol operation systems

    焦點量與鞍點量的至今尚無有效的方法,對比以往其他作者的工作,在方法上,我們避免了通常焦點量需要的非線性積分運和求解多元方程組,使得焦點量極易在機上應用進行快速和化簡。
  15. Sad is able to differentiate models in form of subroutines, fully exploit the sparsity of the models and need few additional operations. it is concluded that sad is very suitable for the process models that have relatively simple computational structure and consist mainly of polynomials

    自動微分具有可對子程序形式的函數求導、可以充分利用模型的稀疏性、無需輔助操作的優點,非常適合針對結構相對簡單、式以多項式為主的過程模型求導。
  16. In this paper, we discuss the principle of mimo - ofdm system based on the introduction of fading channels. furthermore, the channel estimation technique in mimo - ofdm system is investigated, with the emphasis on training sequence - based and pilot - based channel estimation methods, and also several basic and improved algorithms are given respectively. finally, the analysis and comparison of these algorithms is made by computer simulation

    本文在分析移動無線通道衰落特性的基礎上,闡述了mimo - ofdm的基本原理,並圍繞該中通道估這一關鍵技術,深入研究了基於訓練序列和基於導頻的兩類通道估方法,給出幾種相應的通道估法以及它們的改進演法,最後結合matlab模擬對這些演法的有效性和可行性進行了全面地分析與比較。
  17. What the practical problems is often gotten is a single variable time series which has a time interval of t, reflect by a lot of interactive physics factor, containing the mark of all variates participating in movement, traditional time series analysis is to analyse going from this array to the form directly it ' s time develops, one dimension analysis loses useful information, the characteristics of phase space reconstruction method is to construct one dimension scalar quantity to high dimension vector, prop the geometry space of the state, show all dynamical information of system in phase space. the characteristic that just constructs again according to the phase space in this text, analyse the time series of responding, use the relevant knowledge of symbol dynamics and reconstruct phase space, put forward a kind of relation degree analysis method of the systematic mathematics model which has theory basis, so reach the correction of calculation mathematics model, make it accord with the actual systematic state

    實際問題中常常得到的是一個時間間隔為t的單變量的時間序列,它是許多物理因子相互作用的綜合反映,蘊藏著參與運動的全部變量的痕跡,傳的時序分析是直接從這個序列去形式地分析它的時間演變,一維分析必然喪失許多有用信息,相空間重構方法的特點是把一維標量數據構造成高維矢量,支起狀態的幾何空間,在相空間中展示全部動力信息。本文正是根據相空間重構的特點,對響應時間序列進行分析,利用動力學、重構相空間等方法,提出一種有理論依據的數學模型關聯度分析方法,從而達到修正數學模型,使其更合實際狀態的目的。
  18. In the 4th chapter a case study of glasses based on contextual attributes of signs is conducted to instantiate and verify those theories mentioned in the former chapters. at the end of this chapter a tentative computer - aided prototype system for stylistic design is built. yet it is supposed to work when designing simple products such as glasses

    在第四章中,本文以眼鏡為實例,進行了基於context特性的風格研究,並在最後展望了一個針對眼鏡等簡單產品的機輔助風格設原型,希望能將實踐拔升到理論的高度,為開拓風格設化、模式化和可控化提供可行性。
  19. Wolfram research is the creator of the excellent software - mathematica, which is the world ' s only fully integrated environment for technical computing

    Mathematica是美國wolframresearch公司開發的優秀數學軟體,它是當今世界用於科技的難得的一個完全集成環境下的
  20. The workload is enormous and it is very difficult to guarantee the exactness of the result, so it is very valuable to develop a set of computer - assisted software for founding the state equations and analyzing the correlative properties of system over the field f ( z ) of the rational functions in multi - parameters

    而此過程涉及到人工分析結構及復雜的矩陣,工作量巨大,且很難保證結果的準確性。因此,開發一套建立f ( z )上狀態方程並能進行相關性質分析的機輔助軟體便極有價值。
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