時基尺度 的英文怎麼說
中文拼音 [shíjīchǐdù]
時基尺度
英文
time base scale-
The time - scale amplitude plot and phase plot based on hermitian wavelet transform are presented to singularity detection of signal. the corresponding relation relation between singularity and amplitude plot or phase plot is created. as successful application, fault of axletree damnify is found by means of this method
提出了基於hermitian小波變換的時間?尺度幅圖和相圖來識別信號奇異性的方法，建立了信號奇異點與幅圖和相圖的對應關系，在軸承損傷故障診斷中取得了成功的應用。In the first part of the paper, the development of motor control system fault diagnosis theory is summarized. on the basis of the analysis of the characteristics of wavelet, the theory is discussed and the definition of the singularity is given. because of the localization property of wavelet transform, wavelet analysis can be used to detect the characteristics of the singularity from the signal and intermittence fault problems lying in the motor under test
著重介紹了小波分析在電機控制系統故障診斷中的應用，根據小波理論在時域和頻域良好的局部化性質，討論了利用小波變換來檢測信號的奇異特徵的原理，給出了小波變換對信號奇異性特徵檢測的方法，針對實際應用，對小波基函數選取及小波分解尺度進行了探討。This paper use the ncep / ncar day - to - day reanalysis data of 500hpa high field and so on, choose ural mountain, baikal, okhotsk as the key district, the mid - high latitude of eurasia circulation courses that have long duration ( scale of time is middle, namely during 10 - 30 day ), maybe continue continuously after being intermittence of 1 - 2 days in middle, appear repeatedly is for research object, define an index " i " of the circulation pattern over mid - high latitude of eurasia. a method is proposed to identify the summer typical persistent circulation pattern at 500hpa levels over eurasia mid - high latitude. the climate characteristics of those typical persistent circulation patterns are studied
本文利用ncep / ncar再分析逐日500hpa高度場等資料，選擇烏拉爾山、貝加爾湖、鄂霍次克海這三個地方作為關鍵區，以夏季歐亞中高緯度持續時間長（時間尺度屬于中間時間尺度，即10 ? 30天之間） 、中間可能會間歇1 、 2天然後又繼續持續、反復出現的環流過程為研究對象，定義了一個夏季歐亞中高緯流型指數，在此基礎上提出了一種對夏季歐亞中高緯500hpa典型持續流型的界定方法，研究了典型持續流型的氣候特徵，分析了流型指數的年代際變化，以及對應不同階段、不同流型的降水場、加熱場、海溫場等的主要特徵。Aiming at the non - linear links such as time lag, inertia, dead time and saturation within the turbine regulating system, a fuzzy - immune - pid control system was designed based on a mutative scale chaos optimization method, the principium of immune feedback system and the theory of fuzzy control
摘要針對汽輪機調速系統中存在的時滯、慣性、死區和飽和等非線性環節，採用模糊控制理論，結合免疫反饋機理，設計了基於變尺度混沌優化策略的模糊免疫pid控制系統。It comes in for the advantage of existing residential district, and improves the limitation of uniform function and large scale. based on the cognitive of human scale, urban street block organizes the living space according to street activities, which aimming for the multifarious planning structures and design styles, satisfying the various social classes and demands, thus can create a living spaces in residential district which care for the people ' s physical and spiral demands, and reach the genial and friendly neighborhood and street block atmosphere
作為一種日久彌新的住區模式，城市街坊式住區模式吸收了我國以往居住區設計的優點，同時改進了功能單一、尺度過大的弊端，以人的認知尺度為基準，以街道生活為主導來組織居住空間，其目的是為了選擇多種的規模結構與手法，對應多元化的社會階層，滿足多樣化的需求，從而塑造真正關懷人的生活與心靈的居住空間，實現社區、鄰里及街坊生活的回歸。According to the research mentioned above, this paper analyzes the bbk trust model whose critical attribute is binary, and indicates its disadvantages : trust failure punishment equals to that of success, which deviates reality ; malicious recommendation and unfair phenomenon is serious ; trust value fluctuates due to simple arithmetical average algorithm and computation lasts long
基於以上工作，分析了關鍵屬性為二元屬性的bbk信任計算模型，指出其存在的問題：信任理解與現實存在偏差?信任失敗的懲罰尺度等於成功信任尺度；存在嚴重的惡意推薦現象和不公平現象；採用簡單的算術平均計算信任值可能導致波動很大；計算時延較大。By apparent temperature model based on body heat balance theory and suitable in china, using outputs from meso - scale numerical forecast model mm5v36 and atmospheric radiation transmission model modtran3. 0, apparent temperature every 1 hour, 3 hours and 6 hours were forecasted and their application in traveling and dressing meteorology were analyzed
利用中尺度數值預報模式mm5v36和大氣輻射傳輸模式modtran3 . 0及基於人體熱量平衡的全國普適體感溫度模型完成了幼年、老年和成年三個不同年齡段的人群每小時、 3小時和6小時體感溫度的預報。並將預報結果應用於旅遊和著裝厚度預報。Based on re - classification of abbott - firestone curve into three zones, surface bearing index, core fluid retention index and valley fluid retention index were introduced to evaluate the bearing capability and lubricant retention property of a machined surface. the changing tendency of these three indexes was also made clear through experiments, and the relations between them and fractal parameters were built up. at last, it was found that the coefficient c is also suitable to evaluate the bearing capability and fluid retention property of a machined surface
本文在重新劃分abbott - firestone曲線的基礎上引入了表面承載指數、核心區液體滯留指數和谷底液體滯留指數三個指標分別評價表面承載性能和儲油性能，同時通過試驗找到了這三個評價指數的變化規律，最後建立了它們和分形參數之間的關系，並發現尺度系數同樣可以用來評價表面的承載性能和儲油性能。On the basis of the theory of fractal geometry, the fractal dimension characters of ae signal at different tool wear states were analyzed, an algorithm was provided to decide the scale range which is necessary to calculate the dimension of non - fully - fractal form. the experiments showed that the fractal dimension of ae signal is slightly effected by the changes of cutting parameters ; the variance of the fractal dimensions, which reflects the geometric characters of ae signals, has the same tendency as that of the flank wear, the monitoring system, which takes the fractal dimension of the ae signal as the feature, can identify the different tool wear states more correctly under different cutting conditions
以分形幾何理論為基礎，對刀具不同磨損階段聲發射信號的分形特徵進行分析.提出了計算非完全分形體信號波形的關聯維數時尺度范圍的確定方法，分析了聲發射信號在刀具磨損過程中分形維數的變化特性.刀具磨損切削實驗數據表明，聲發射信號的分形維數受切削參數變化影響較小；分形維數反映了聲發射信號的幾何特徵，其大小能較好地反映刀具的不同磨損狀態.實驗結果表明，該方法能正確地實時在線監測刀具的不同磨損狀態The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film
試驗結果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機填料會使復合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應；碳纖維表面含有c = o及c - o - c等極性基團，有利於提高其與其它組分的相容性，提高層間剪切強度；均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系，擬合曲線基本能表示各配方的摩擦系數發展趨勢；配方中不加銅粉或不加石墨，其摩擦系數均較高，說明銅粉和石墨應該配合使用；當銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。At the same time, we should study the coordination of the different systems, the scenery scale and situation in the interior architecture, and the open degree of the system
同時，研究不同系統之間的協調性，景觀在建築空間中的格局和尺度，以及系統的開放程度，是基於生態的室內自然景觀設計的另一個方面。Sustainable development, which pursue long - time economic increase and quality advancement, is to satisfy both the needs of the present age and that of the future. shaowu, a county in mountainous area of fujian, plays a major role in the sustainable development in minjiang watershed. the thesis based on the theory of district sustainable development put forward the problems, pontentia and advantage which shaowu is faced with. the pattern of shaowu sustainable development and approach to implement it is also discussed. also, the thesis sets forth the important meaning of policy selection to the sustainable development and bring forward the adaptive policy of the sustainable development in shaowu
縣域可持續發展是指在一定時空尺度上，以長期的經濟增長及質量提高為目標，從而既滿足當代縣域發展的需要，又滿足未來縣域的發展需求。邵武是福建省的一個山區縣級市，邵武的可持續發展對閩江流域的經濟可持續發展起著重要作用。本文建立在區域可持續發展的理論基礎之上，並對區域可持續發展理論進行概括，通過對邵武資源環境和社會經濟基礎系統的分析，提出邵武可持續發展面臨的問題和所具有的潛力和優勢，充分論述邵武實現可持續發展的模式內容和實施途徑。A timescale algorithm based on wavelet entropy
一種基於小波熵的時間尺度演算法Abstract : biological invasions are a continuous feature of a non - equilibrium world, ever more so as a result of accidental and deliberate introductions by mankind. while many of these introductions are apparently harmless, others have significant consequences for organisms native to the invaded range, and entire communities may be affected. here we provide a survey of common models of range expansion, and outline the consequences these models have for patterns in genetic diversity and population structure. we describe how patterns of genetic diversity at a range of markers can be used to infer invasion routes, and to reveal the roles of selection and drift in shaping population genetic patterns that accompany range expansion. we summarise a growing range of population genetic techniques that allow large changes in population size ( bottlenecks and population expansions ) to be inferred over a range of timescales. finally, we illustrate some of the approaches described using data for a suite of invasions by oak gallwasps ( hymenoptera, cynipidae, cynipini ) in europe. we show that over timescales ranging from 500 10000 years, allele frequency data for polymorphic allozymes reveal ( a ) a consistent loss of genetic diversity along invasion routes, confirming the role of glacial refugia as centres of genetic diversity over these timescales, and ( b ) that populations in the invaded range are more subdivided genetically than those in the native range of each species. this spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants
文摘:生物入侵是不均衡世界的一個永恆話題，尤其是當人類有意或無意地引入物種后.很多引入顯然是無害的，但另外一些則有著嚴重的後果，會給入侵地的生物以至於整個生物群落造成影響.本文總結了分佈區擴張的常見模式，概述了它們對遺傳多樣性和種群結構式樣所造成的影響.描述了如何根據以一批遺傳標記所得到的遺傳多樣性式樣來推斷入侵途徑，來揭示伴隨擴張選擇和漂變在形成種群遺傳樣式中的作用.本文對日益增多的群體遺傳學方法進行了總結，這些技術可以用來在不同的時間尺度上推斷種群規模所發生的巨大變化（瓶頸效應及種群擴張） .最後，我們以歐洲櫟癭蜂（膜翅目，癭蜂科，癭蜂族）一系列入侵的數據為例對一些方法進行了說明.從500 10000年的時間尺度上，多態的等位酶位點上等位基因頻率的數據表明: 1 ）遺傳多樣性沿入侵路線呈不斷下降的趨勢，支持了冰河期避難所作為遺傳多樣性中心的作用; 2 ）入侵地區的種群與該物種原產地的種群相比，遺傳上的分化更為強烈.這種種群結構在空間上的變異可能是被櫟癭蜂開發的資源尤其是櫟樹寄主在斑塊上出現變異的反映The new method is a modified pts method, and can make good compromise between performance and computational complexity. the dissertation explores, by means of computer simulation, how the conventional method based on amplitude - limiting and filtering affects the performances of wavelet packet modulation signals, and presents a new method, namely, selective mapping / amplitude limiting / filtering method, which proves to be effective, simple, and have better ber performance
並基於自子波變換和時間、尺度解析度的概念，從理論和模擬實驗兩方面對通道建模和時間/尺度rake接收機進行了分析，並與傳統的kake接收機進行了比較，結果表明時間/尺度聯合分集能有效地克服高速衰落多徑通道的影響。Based on the effective temperature accumulation above 12 and variety maturity characters, physiological time for predicting the development processes from sowing to boil opening under different environments was determined
以12的有效積溫和品種熟性因子為基礎，建立了一種統一的生理時間尺度，可預測不同環境條件下不同品種從播種到吐絮的全過程。Based on the basic principle of wavelet analysis, multi - resolution analysis of signal in atomic clock is made. the coefficients of wavelet transform for synthesis atomic time, which are weighed and averaged at different wavelet scales, are obtained. then according to reconstruction theorem, multi - resolution synthesis time scale can be reconstructed. since the signal of atomic clock has been analysed by multi - resolution, we can use wavelet variance at different scales to weight and average the coefficients. thus either the difference in stability of different clock or the varying characteristic of the same clock at the different scale are all considered. finaly, this method is checked by the measured data from national timing serve center of shaanxi astronomy observatory. it confirmed that this technique, which is simple and practicable, is a new method of multi - resolution. from this method, the common characteristic of different clocks can be extracted. the stability of multi - resolution synthesis atomic time scale is obviously superior to that of other methods
本文根據小波分析的基本原理，對原子鐘信號進行多解析度分解，將分解后的小波變換系數進行加權平均，得到不同小波尺度綜合原子時的加權平均小波變換系數，然後由小波變換的重構條件，反演綜合時間尺度.由於對原子鐘信號進行了小波分解，利用不同尺度的小波變換系數的小波方差進行加權平均，這樣既考慮不同原子鐘在穩定性方面的差異，又顧及同一臺原子鐘在不同小波尺度的變化特性.最後根據陜西天文臺國家授時中心的實測數據對這種方法進行了檢驗.表明這是一種全新的多解析度綜合方法，這種方法比較簡單而切實可行，它能提取各個原子鐘的共同特性，多解析度綜合時間尺度的平穩性明顯優于其他方法20 misra v, gong w b, towsley d. fluid - based analysis of a network of aqm routers supporting tcp flows with an application to red
和其它大多數aqm演算法不同， msc在兩個時間尺度上結合了基於流速率和基於隊列長度的控制方法。On the basis of sand dividing and isochronous tracing correlation which is making in supershort - term cycle sequence, choose two layers of 11 and 35 as units to make isopach map of sand and isochronous depositional microfacies map in short time and big scale. comparison with the same work which was made by predecessor, the precision and degree of reliability of these maps is outstanding
在相當超短期旋迴層序級別的砂層劃分和等時對比基礎上，選擇1 ~ 1和3 ~ 5兩砂層為編圖單元編制大比例尺短時間尺度的砂體等厚圖和等時沉積微相圖，並與前人所編的同類圖件進行比較，突出了本文所編圖件的精度及可靠程度。Multiple time scales analysis of runoff series in hanjiang river with wavelet transform
基於小波變換的漢江徑流量多時間尺度分析分享友人