通信周期 的英文怎麼說
中文拼音 [tōngxìnzhōuqī]
通信周期
英文
communication cycle-
The spread spectrum communication with an aperiodic pn code and under strong man - made jammers has an important significance in military communications
強人為干擾環境下的非周期擴頻碼的擴頻通信在軍事上具有重要的意義。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。Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground
針對存在的缺點，本文提出了一種應用於激光多普勒測速的高精度信號處理技術，即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜，搜索其譜峰值頻率，接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析，再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析，從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來，充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率，通過goertzel演算法獲得分析頻帶的高解析度頻譜，然後通過能量重心校正演算法對細化后的頻譜進行高精度校正，這樣不僅保證了演算法的高效性，而且大大提高了分析的精度。On the base of researching the theory of the scheme and analyzing the signal feature, it is obtained that the existence manners and character of distance information in the differential frequency signal. at the same time, a new conclusion is gained that the technology of frequency agility can decrease the constant error of system. it is also to say that frequency agility and frequency modulation fixed - distance fuze has the similar feature to random period frequency modulation fixed - distance fuze. according to the theory of address coding in the hopping - frequency communication, the paper presents the principle of selecting the frequency agility sequence which fit to the radio fuze and constructs the frequency agility sequence family based on the rs codes
在深入研究方案原理和分析信號特徵的基礎上，獲得了該體制引信差頻信號中，距離信息的存在形式和特點，得出了頻率捷變技術的引入降低了系統定距固定誤差這一新的結論，即頻率捷變調頻定距引信在定距性能上具有類似隨機周期調頻定距的特徵。本文引入跳頻通信地址編碼理論，結合無線電引信的具體特徵，提出了適用於無線電引信的頻率捷變序列的選擇原則，並構造了基於rs碼的寬間隔頻率捷變序列族。We do this by running inspirational participatory drama courses and workshops that help to develop creative thinking skills, leadership and team - building skills, self - awareness, confidence, presentation skills, self - expression and self - esteem
通過為期十周的課程，參與者的創新思維能力，領導力，團隊建設技巧，自我認識，自信心，自尊，演講能力，表達能力都將得到全面的發展。Traditional editorial - publication procedure can no longer fulfill the time and effectiveness demands to the journals. academic journals have to revolute this publication model and decrease the time period for publication in order to better serve the knowledge renovations
隨著社會高度發達對信息傳播要求的提高，傳統的編輯出版流程已經越來越不能適應期刊出版對時效的要求，學術期刊只有通過變革已有的出版模式，縮短出版周期，才能更好地為知識創新服務。Curcumin has been shown to induce a wide variety of tumor cells by several mechanisms, mainly including modulation of the expression of oncogenes and cancer suppressor genes, down - regulation the activation of transcription factors, via many signal transduction pathways, and the modulation of cell cycle. provides an overview of domestic and international apoptosis mechanisms of malign tumor cells induced by curcumin in order to better explore and open up new avenues of cancer treatment
姜黃素能夠誘導多種腫瘤細胞系凋亡，其機制主要是調控癌基因和抑癌基因，下調多個轉錄因子活性，通過多種信號轉導途徑，誘發細胞周期停滯而誘導細胞凋亡.對近年來姜黃素誘導細胞凋亡的機制進行綜述，以便更好地探求和開辟治療惡性腫瘤的新途徑。This dissertation analyzes the products quality measurement and control methods and concept and theory of computer aided quality system, studied, put forward a distributed computer aided quality measurement and control method based on network which integrated the distributed quality control cell, collecting and delivering quality information through network and database system in time. it coordinates the activity of quality that involves products whole life cycle proceeded. at last, it is discussed through an application instance that the framework model of computer aided quality system under environment of cims and the information - integrating technique of the system to adapt to cims environment
本文著眼產品質量系統，著重分析和應用了產品質量檢測與控制方法和計算機輔助質量系統的技術和理論，提出了基於網路的分散式計算機輔助質量檢測、控制，通過計算機網路和數據庫系統，把企業相互分離的單元質量保證、質量控制系統和技術有機結合起來，及時採集、處理並傳遞質量信息，使涉及產品整個生命周期的質量活動得以協調進行，在此基礎上通過應用實例探討了cims環境下的計算機輔助質量系統構架模型及系統適應cims環境信息集成的技術。Restricted by the long period, high cost and condition, the computer simulation is used to evaluate the communication countermeasure and direction finding rather than making hardware experiments
由於通信測向硬體測試和分析成本高、周期長、受外界條件限制嚴重，因此在很大程度上依賴計算機模擬技術，計算機模擬獲得了廣泛應用。This paper takes the venture capital company as subject in risk management, and the risk factors in venture capital investment cycle as object, spreads out from three sides which include outside guarantee of risk management in venture capital that is to keep away macro condition risk, inside base that is congnition of risk managementsubject, and central content that involve micro management mechanism of different risk object. through a plenty of emperical investigation including evaluation of macro condition risk, identification of subject of risk management, information obstacle in decision process, agency risk performance of entrepreneur, risk attitude of venture capitalist and entrepreneur, control actuality at post - investment stage, supply and demand of value - added service, and exit practice etc., the paper firstly analyzes the risk management mechanism of venture capital wholely in system
本文以創業投資公司為風險管理主體，以創業投資周期中的風險因素為管理客體，從外在保證? ?宏觀環境風險防範、內部基礎? ?風險管理主體的認知、核心內容? ?不同風險客體的微觀管理機制三個層面展開，首次通過大量的實證研究，包括宏觀環境風險的評價、風險管理主體的認知、決策過程中的信息障礙、創業企業家代理風險的行為表現、創業投資家和創業企業家的風險態度、投資后階段的監控現狀、增值服務的供需、退出實踐等內容，在理論分析和實證調查的基礎上系統而全面地研究創業投資的風險管理機制。To monitor the quantity, direction, and duration of blue light signals, higher plants rely on a sophisticated photosensory system consisting of three blue - light receptors - cryptochrome 1, cryptochrome 2 and phototropin - and various signal transduction factors
摘要植物具備一套復雜的由3種藍光受體和多種信號轉導下游組分組成的藍光感應系統，通過感受光照強度、光的方向和光周期，調節自身對藍光的應答。This analysis framework is proposed based on adequate comparison of existing multi - model information fusion methods and the discovery of periodic characteristic of racquet sports video. it is a general sports video content analysis method based on audio / visual middle level features, domain rules, context, and highlights ranking. its advantages include simplicity, intuitiveness, generality, context - sensitive and affectivity
該分析框架是在充分分析現有的多模態信息融合方法並結合球拍運動周期性特點后提出的，是一個基於音視頻中層特徵、領域規則、採用時序分析方法形成精綵排序的通用體育視頻內容分析方法，兼具了復雜度低、直觀性強、通用性好、上下文相關和有感知性這五項優點。The content of each part follow as : in the first chapter, as start point and base of the paper, this part focuses on the basic study of definition characteristic of no, and the existing base of no - e - commerce environment ; in the second one, this part studies the theory base of no comprehensively applying the theories of core competence competent strategy and transaction cost ; chapter three studies the no from the coordination of no, and gives the structure clarification and characteristic of no firstly, at the same time, put forward the concept of virtual enterprise cluster ; based on such conclusion, studies the model of no from life cyc organization level process and value chain, and operational mode ; in chapter four, a theoretical explanation was addressed on the above structure by modeling no with game theory and graphic theory ; in the fifth chapter, on the bases of analysis of no operational risks, coordination mechanism of no was studied by individually modeling the no without core and no with core, and then put forward the solution for coordination mechanism of no ; as an important component of coordination mechanism of no, chapter six explored some basic concept of trust and importantly put forward the way of how to build trust in no, especially investigated the supporting function of valid reputation mechanism of no for the trust building, importantly an operational method on building reputation mechanism and evaluation method in no were given ; the last chapter applied the conclusion of the paper to investigate the famous trade web - sunbu. com analyzed its shortcoming and gave the advices of developing
全文共分為七章，主要內容如下：第一章作為全文的理論出發點和基礎，圍繞網路組織的定義、特徵以及網路組織生存基礎- -電子商務環境等方面對網路組織的基本概念進行了闡述；第二章綜合運用核心能力、競爭戰略和交易費用理論對網路組織產生的理論基礎進行闡述；第三章首先從組織協調的角度對網路組織進行了研究，給出了網路組織的結構，分類和特徵，同時並給出了虛擬企業群簇；然後在此基礎上分別研究了網路組織的生命周期模型、層次模型、過程模型、價值鏈模型，以及運行模式；第四章綜合運用博弈論、圖論的相關知識，通過構建網路組織的模型，對上一章所研究的網路組織結構的形成機理給出了一種理論解釋；第五章在分析網路組織運行風險的基礎上，分別建立無盟主網路組織的博弈論模型和有盟主網路組織的博弈論模型，詳細研究了網路組織的協調機制，然後給出了網路組織協調機制的解決方案；第六章作為網路組織協調機制的重要組成部分，本章在討論了網路組織中建立信任機制的必要性的基礎上，研究了網路組織信任關系的類型，提出了在網路組織中如何建立信任機制。The table will write down all about the electronic records during their life period. the content noted in the table will be the only basis on original and reality " testing of electronic records ". the major task of the second levels is to build the tight filing rules, moreover, combined the " life cycle table ", to build the test system to assure the original and the reality of the information during filing ; the assignment of the third level is to build testing and restoring measures of the original and the reality. by maintaining the media of electronic archives or building information file of electronic archives etc, electronic archives can maintain their available ^ visuak understandable during their deadline ; meanwhile, to build the safe control of the system through the workers dispersed authorization and deterring skills, to formulate the standards of the protective system, such as the standard of the basic structure of united electronic records ^ electronic archives. all of this is important to protect the original and the reality of electronic records and electronic archives
「生命周期表」所記錄的內容將作為電子文件歸檔時檢驗原始性、真實性的唯一依據；電子文件歸檔管理層中的主要任務是要建立起嚴密的歸檔制度，同時結合「文件生命同期表」建立檢驗措施保證電子文件在歸檔過程中信息內容的原始性、真實性；電子檔案保管層中主要任務是建立電子檔案數據原始性、真實性檢驗及原始數據恢復管理措施，通過對電子檔案載體的維護、建立電子檔案維護管理的信息文檔等工作，確保在保管期限中的電子檔案保持其可用性、可存取性、可理解性：建立電子文件與電子檔案原始性、真實性保護體系安全控制，通過對系統工作人員授權分散化、建立用戶標識與認證技術等措施確保「保護體系」安全運行；加強「保護體系」涉及的標準與規范的制定工作，如建立統一的歸檔電于文件、電子檔案基本結構等標準對保護電子文件、電子檔案信息原始性、真實性有著重要意義。In the paper, prescale technology, interpolate method, averaging method and multiple period synchronization method are used to measure the frequency accurately. diode demodulating technology, and power attenuated method or probe coupling & water load technology are employed to measure the power of high power microwave. isothermal technology is used to improve the stability of demodulator and to expend the range of square linear region
本文採用預分頻法、內插法、多周期同步法、平均法實現了頻率的精確測量;利用二極體檢波技術，結合衰減法或探針耦合+水負載技術實現了大功率微波功率的測量;採用恆溫技術提高了二極體檢波器穩定度;完成了單片機串口通信協議設計和系統電磁兼容的分析和設計。We propose in this paper an evaluation method for the transient performance of das, through the period signal, by utilizing the much smaller difference than sampling period between the multi - periods of signal and the multi - sampling periods, getting shorter equivalent sampling period ( i. e. higher equivalent sampling rate ), which is derived from input signal period and sampling period, and then, the problem that how to get the transient performance of das has been solved. the transfer function of das is then evaluated and identified, and practical test results are also presented
本文介紹一種方法，通過對其加載特定的周期性輸入信號，使用采樣周期的整數倍和信號周期整數倍間的微小偏差，獲得比實際采樣周期小得多的等效采樣周期，從而解決了數據採集系統瞬態響應特性的獲取問題；並進而獲得了數據採集系統傳遞函數的辨識和評價結果，實現了數據採集系統瞬態特性的總體評價。Hr mis can accomplish hr automation, shorten management cycle, optimize hrm procedure, decrease human duplication and interruption. it also can conformity hr date, analyses date, support decision, help self - service, accelerate participation, increase satisfaction of employees. it also can accelerate integration between hr mis and other management system, optimize resource distribution and operation procedure, improve management, and accomplish organization goal
通過運用人力資源管理信息系統，可以實現人力資源管理自動化，縮短管理周期，優化人力資源管理流程，減少管理工作的重復性及人為干擾;可以整合人力資源數據，進行數據挖掘與分析，實現決策支持;可以開展員工自助服務，促進廣泛的員工參與提高員工滿意度;可以進行人力資源管理信息系統與其他管理信息系統的整合與集成，實現壽險公司整體資源配置優化與業務運作流程優化，促進壽險公司整體管理水平的提高，最終有利於實現壽險公司的經營目標與競爭戰略。In principle, ultrasonic sensors are suspended over a road, which keep emitting pulse signals periodically to nearby and feed back waves to decide existence of any obstacles, thus to detect the speed, height, length, different sizes ( heavy, medium and small ) of moving vehicles and accumulative flow as well as length of motorcade. optionally, it can be applied to multitude driving lanes simultaneously for traffic data. by integrating and analyzing these measured data, the necessary figures concerning traffic flow may be obtained, which are fundamental basis guiding road buildings
本課題設計的是一種懸掛式超聲波車流多信息檢測器，通過懸掛于路面上方的超聲波探頭向路面周期性地發射脈沖信號，利用地面回波來判斷遮擋物地存在，可用於檢測行駛中的機動車車速、車高、車長、大中小分型以及累計車流量、車隊長度等信息，並可用於多個車道車流信息的同時檢測，綜合這些測量參數可獲得車流量的必要數據，可為公路建設提供必要的基礎依據。Then in allusion to biased momentum wheel system, based on classical control system a pid controller was design about pitching channel. according to specialty of roll - yawing channel, this paper discuss long - time cycle movement and short - time cycle movement. when design the control method of long - time cycle movement, whiff thruster is used to assistant the control system. when design the control method of short - time cycle movemen, in order to sovle the problem of coundn ’ t abtain the angular velocity signal, nonminimum phase controller advanced by terasaki is used
然後針對偏置動量飛輪系統，基於經典控制理論設計俯仰通道的pid控制律，根據滾動?偏航通道耦合的特點，分別討論了由軌道角頻率和章動頻率引起的長周期運動和短周期運動。其中長周期運動控制律設計時，結合了噴氣推力控制來輔助偏置動量控制;短周期運動控制中，為了解決不能獲得角速度信號的問題，採用terasaki提出的非最小相位控制器進行控制。The characteristics of precipitation anomalies in summer, previous and simultaneous ssta and preceding winter accumulated snow depth anomalies corresponding to positive and negative phases of 10 - yr mode and 25 - 30 - yr mode are discussed respectively. no matter for 10 - yr mode or for 25 - 30 - yr mode, reverse characteristics corresponding to positive phases and negative phases appear in the above fields. it proves that the decadal variation of sah have a good relation to the decadal variation of other key element of climate system and we can regard sah as a strong signal of the anomalies in the climate system
（ 4 ）夏季南亞高壓東西振蕩具有明顯的年代際變化特徵，本文分別討論了對應於10年周期態的正位相年和負位相年及25 - 30年周期態的正位相年和負位相年時夏季我國降水距平、前期及同期海溫距平及前冬青藏高原積雪距平的分佈特徵，發現無論是10年周期態還是25 - 30年周期態，對于夏季南亞高壓東西振蕩的正位相年和負位相年以上各要素場呈現為很好的反位相特徵，說明夏季南亞高壓的年代際變化與氣候系統中其他要素的年代際變化具有很好的關聯性，可將南亞高壓看作氣候系統中大氣子系統異常的強信號，通過分析南亞高壓的年代際異常可以更直接地研究和預測區域氣候異常。分享友人