time-varying data 中文意思是什麼
time-varying data
解釋
時變數據-
Shortwave channel is time varying transmission channel. it has dispersion in frequency and time domains. this characteristics hinds the data transmi - ssion at high speed and the correction of received data. in this dissertation i have analyzed the statistic characteristic of shortwa - ve channel, established the model of shortwave channel and simulated the rayl eigh fading distribution. the technology of spreading spetrum has been proved that it has the capability for anti - multipath and discerning multipath
在短波通信中，由於通道的時間色散和頻率色散，引起多徑展寬和多徑衰落，前者限制了數據的傳輸速率，後者造成短波數據通信中出現突發錯誤，為了解決多徑效應對短波通信的影響，本文所做工作如下：首先詳細分析了短波通道的統計特性，建立其數學模型；其次分析了擴頻通信的特點，從理論上證明擴頻技術不僅具有抗多徑干擾能力，而且具有分離多徑的能力；介紹了傳統的rake分集合併技術的特點。 -
The development of the internet and communication equipment has enabled new applications which include : finance analysis, network monitoring, telecommunication data management, sensor networks, etc. in these applications, the data which we called data stream is multidimensional, continuous, rapid, and time - varying, which should not only meet the needs of traditional ad - hoc query, but also continuous one for special
隨著網路的發展，通訊設備的普及，一種新的數據密集型應用逐漸浮出水面，這主要包括:金融分析、網路監控、通訊數據管理、傳感器網路數據處理等。在這些應用中數據是多維的、連續的、快速的、隨時間變化的，同時，這些應用除了傳統的即席查詢，更可能需要連續查詢。 -
Bounded convergence of finite data window least squares identification for time - varying systems
非線性系統參數估計的投影演算法 -
The explicit finite element method ( fem ) based on the varying time - step was selected to analyse the dynamic roll - pass process ; the nodes on the leading face of the steady - state elements set was extracted and projected onto a plane to give the required mesh, also called the origin mesh ; the implicit fem was selected to analyses the inter - pass transient thermal process ; a geometric part from the mesh was generated and meshed by using the quadrilateral elements, a heat transfer analysis was selected to transfer the node temperature data ; a new model was created by using hexahedral elements, mapping the node temperature and the equivalent plastic strain on the integration points
利用基於變步長中心差分格式的顯式積分方法分析瞬態軋制過程；提取穩態單元集節點形成截面網格；利用隱式積分方法分析軋制道次間隙瞬態溫度場；對型鋼斷面進行平面四邊形網格劃分並映射節點溫度數據；利用六面體單元構建有限元分析模型，映射單元節點的溫度、積分點的等效塑性應變，進行數值分析。 -
By measuring the temperature of temperature - feeling machine of pre depositing in the box sections, i can get the varying temperature data of different time in box sections, then make use of these temperature test datas, figure out the variety regulation of temperature distribution along the high direction in box section with the nerve network method, then i get temperature fields of box section along the high direction
3 、採用現場實測的方法，通過測量預埋在箱梁截面的溫度傳感器，得到不同時刻箱梁截面的溫度變化數據，然後利用這些溫度測試數據，用回歸分析的方法擬合出沿梁高方向的溫度分佈規律，從而得到箱梁梁高方向的溫度場。 -
A quick spectroscopic diagnostic system for the flame temperature is set up in this paper. it consists of an optic imaging system, a scanning system, a dispersive system, a photoelectricity conversion cell, operational amplifiers, a computer - based data collection system and a data processing. the temperature profile varying with the time can be quickly measured by this system
目前光學診斷由於其相應快、精度高，屬于非接觸式測量手段，在研究中得到越來越多的應用，這里要介紹的就是本文中建立的一套光學診斷系統，它由高壓燃燒室、旋鏡掃描儀、旋鏡控制器、小型光柵攝譜儀、光電轉換裝置，微弱信號放大器以及數據採集系統組成。 -
With the xiaping municipal solid waste lindfill taken as an example, laws of the rate and quantity of solid waste degradation varying with time were obtained by means of experimental data of amounts of organic matter and residue of degradation in test materials and the characteristic time of degradation
以深圳下坪垃圾填埋場為例，根據試驗材料中的有機物和降解殘余物含量以及特徵降解時間，計算得到降解速率和降解量隨時間變化規律。 -
High efficiency compression of electrocardiogram data based on time - varying zerotree wavelet packet coding
應用時變小波包零樹編碼實現心電數據的高效壓縮 -
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 -
A novel fault diagnostic strategy based on time - varying dynamic pca model has been presented, which makes use of continuous updating time - lagged data matrix to construct a changeable pca model to fulfill the task of fault detection and identification
摘要提出利用不斷更新的時滯數據矩陣建立變化的動態主元模型對某些動態系統內的傳感器故障進行檢測，利用變量貢獻圖的樣本平均對故障進行識別的方法。 -
In order to integrally interpret the modern geodetic data, on the basis of available works, we put forward the basic concept of the coupling movement between the crustal deformation and density change, analyze the theory of coupling movement, and derive a general strict formula of time - varying gravity caused by the coupling movement
摘要為整體解釋現代大地測量數據，提出了地殼變形與密度變化耦合運動的基本思想；分析了地殼變形與密度變化耦合運動的基本理論；導出了由地殼形變與密度變化耦合運動引起的重力時間變化一般嚴格公式。 -
( 4 ) according to observation data, the approach to the time varying rule is proposed using wavelet theory and phase space reconstruction, the evolution of the crack opening varying with time is studied and proved by a project example. ( 5 ) on the basis of extracting the time - dependent component using wavelet analysis
（ 4 ）基於實測資料，綜合應用小波分析理論和相空間重構技術，對裂縫開度隨時間的演變規律進行了研究，提出了基於小波分析理論和相空間重構技術的裂縫時變規律分析方法，並對其可行性進行了工程實例驗證。 -
The noise suppression uses two methods ? mlms self - adaptive filter arithmetic and blind signal separation. the lung sounds data analysis uses time domain analysis, frequency domain analysis, power spectra analysis, time - varying spectra analysis and so on. healthy people and lung disease patients ’ lung sounds are collected by the system and the data affirms the reliability and practicability of the system
我們利用該系統對正常人和肺病患者的肺音進行了採集和分析，通過這些分析數據，既肯定了該系統的可靠性和實用性，又對各種肺音分析演算法進行了對比和驗證，對該系統的臨床應用打下了良好的基礎。 -
One of the biggest challenges in dsms is the especial need for adaptivity, due to the long running continuous queries and time - varying feature of the data stream and the network environment
Dsms面臨的重大挑戰之一是長時間連續查詢和多變的系統環境和數據所帶來的對系統在適應性上的特殊需求。 -
In rtbac, users execute permissions to access fixed data and tasks to access flowing and varying data such as documents being approving. rtbac can renew authorization in time according to the flowing and use of data in workflow systems. a formal description and an analysis of rtbac are given
並且在rtbac中：針對工作流的靜態特性：固定不變的數據如已經歸檔的公文不能進行修改、制發等操作，一般只能查看，故與存取權限相關，用戶通過執行相應的存取權限才能訪問，即傳統的rbac模型；針對工作流的動態特性：正在流動、不斷變化的數據如正在接受審批的公文則與任務相關，任務可以對此數據進行某種方式的存取。 -
( 4 ) the dynamic data forecasting model of ground settlement is studied, a new prediction model of grey - time serial with time - varying parameters characters is proposed
（ 4 ）研究了隧洞施工中地表沉降動態預測模型，提出了時變參數灰色?時序動態預測模型，並建立了一種改進的時變灰色模型。 -
There can be any number of factors that lead to this data complexity within a company - for instance, mergers and acquisitions that combine different organizations with varying it infrastructures, business growth from a local to a transnational company, or simply piecemeal technologies used to build information systems over a period of time
有很多因素可以導致公司中的這種數據復雜性例如，將具有不同it基礎設施的組織組合起來的合併和收購，從本地公司到跨國公司的業務增長，不同時期採用的不同的用於構建信息系統的不同技術，等等。
分享友人