degradation of performance 中文意思是什麼

degradation of performance 解釋
性能降低
  • degradation : n. 1. 降級；免職。2. 退化；墮落。3. 【地質學；地理學】（地表的）剝蝕。4. 【化學】降解，遞降分解（作用）。5. 【物理學】（能的）退降。
  • of : OF ＝Old French 古法語。
  • performance : n. 1. 執行，實行，履行；完成；實現；償還。2. 行為，動作，行動；工作。3. 性能；特性。4. 功績；成績。5. 演奏；彈奏；演出；（馴獸等的）表演；把戲。6. 【物理學】演績。
  1. Cycle frequency - based blind beamforming shows the performance degradation due to cfe ( cyclic frequency error ). an improved algorithm is presented in literature 6, which adopting forgetting factor in estimation cyclic correlation matrix would largely depress the sensitivity of cab to cyclic frequency error. by using this method, the improved algorithms of the c - cab and ecab algorithms are presented in this dissertation

    針對基於循環頻率的盲波束形成演算法對循環頻率誤差cfe （ cyclicfrequencyerror ）很敏感而導致演算法性能下降的情況，參照文獻[ 6 ]提出的遺忘因子cab演算法，提出了c - cab演算法以及基於特徵空間的盲波束形成演算法（ ecab ）的改進演算法。
  2. Experimental results show that the cascading of the speech enhancer and a hidden markov model ( hmm ) based speech recognizer can significantly improve recognition accuracy in noisy environments without performance degradation for clean speech

    通過3種不同的增強演算法用於純凈語音和3種類型帶噪語音的實驗結果分析比較表明，這一方法對純凈語音的識別精度幾乎沒有任何改變而大大提高了系統的抗噪聲性能。
  3. Abstract : based on the iterative bit - filling procedure, a computationally efficient bit and power allocation algorithm is presented. the algorithm improves the conventional bit - filling algorithms by maintaining only a subset of subcarriers for computation in each iteration, which reduces the complexity without any performance degradation. moreover, a modified algorithm with even lower complexity is developed, and equal power allocation is introduced as an initial allocation to accelerate its convergence. simulation results show that the modified algorithm achieves a considerable complexity reduction while causing only a minor drop in performance

    文摘:基於迭代的比特和功率分配機制，提出了一種低復雜度的比特和功率分配演算法.與傳統的迭代分配演算法不同，該演算法在每次迭代中只需要比較幾個特定的子載波.該方法在保持傳統迭代演算法性能的前提下極大地減小了迭代分配演算法的復雜度.此外，通過選擇等功率分配方案作為初始方案加快了演算法的收斂速度，進一步降低了演算法復雜度.模擬結果表明，提出的改進演算法在基本不犧牲系統性能的前提下有效地降低了演算法復雜度
  4. The selfish behaviors will cause the degradation of system performance. this thesis focuses on the “ free - riding ” problem and designs a user cooperation incentive mechanism to p2p anonymity systems

    本文針對「 free - riding 」問題進行研究，並設計了一個p2p匿名通信系統的用戶激勵機制，以期能夠解決這一問題。
  5. However, this dissertation mainly focuses on diesel catalyst aging mechanism including heat deterioration and performance degradation caused by toxic substance. following the above conclusions, a fast aging test cycle is produced which consists of three stages

    論文的主體分析了柴油機氧化催化劑的老化機理，主要是熱失活和化學中毒老化，研究了我國主要幾種柴油機的排氣溫度特性，並在催化劑老化機理基礎上提出車用柴油機氧化催化器快速老化試驗循環，即三段式老化循環。
  6. Abstract : the gpc or crhpc strategy with input constraints will be possible to lead to infeasibility of the control algorithm and the performance of the control system will get degradation or instable. in order to overcome this problem, a control algorithm with guaranteed feasibility is proposed in this paper. it is shown that the algorithm makes the plant asymptotically stable and drives condition setpoint close to the actual setpoint of the plant

    文摘:在系統輸入受限的情況下，採用一般的廣義預測控制或受限時域預測控制有可能會造成控制演算法不可行，從而使系統的性能變壞或不穩定.針對這個問題，本文提出一種保證可行性的控制演算法，並證明該演算法能夠使系統漸近穩定且最終使條件設定值跟蹤系統的實際設定值
  7. Influence of preparation conditions of nanosized tio2 film on performance of photocatalytic degradation of cokey waste water

    二氧化鈦納米膜制備條件對煉焦廠廢水光催化降解性能的影響
  8. Analyze the linear dipole array with uniform element spacing using the method of moments ( mom ), derive the analytical expression for the recovered signal with the direct data domain method, demonstrate the effect of the mutual coupling on the performance of the antenna array by examples, the degradation of the system caused by the mutual coupling is simulated and analyzed in two different electromagnetic environments such as the weak and strong interference

    用矩量法計算了幾個信號同時照射時對稱陣子均勻直線陣的電流分佈，用直接數據域演算法推導了此接收陣列的恢復期望信號的表達式，舉例說明了互耦對陣列天線性能的影響，數值模擬了在弱干擾和強干擾下，互耦造成系統性能下降的情況並分析了原因。
  9. Thus, it is believed that in subsequent high - temperature process, the base boron will outdiffuse very easily into emitter and collector, which will form a parasitic barrier for the electrons when moving from emitter into base and result in performance degradation of the device

    這樣在後續的高溫工藝中就會引起基區的雜質外擴到集電區和發射區，產生電子勢壘，導致器件性能的嚴重退化。
  10. A major limitation of piezoceramic actuators is their lack of accuracy due to the hysteresis nonlinearity which can result in the degradation of system performance and even lead to instability

    摘要由於壓電陶瓷執行器固有的遲滯非線性會影響系統的控制精度，甚至能導致系統不穩定，基於神經網路建立一個遲滯非線性的智能模型。
  11. Radome is designed to protect the antennas from the external environment. however, radome is interfering with the electromagnetic radiation of antenna, which may result in significant degradation of antenna performance, cause transmission attenuation and beam deflection

    天線罩在保護天線不受外界影響的同時對天線的電磁輻射產生某些干擾，使天線的電性能降低，引起天線的傳輸損耗和波束偏移。
  12. A wide range of application is possiblerfrom biomedical and industrial imaging to radiation monitoring and control due to their well - known capability to operate at room temperature with minor degradation of spectroscopic performance

    在室溫下對x -射線、 -射線能量解析度好，其能量探測范圍在10kev ? 6mev 。可應用於天文、醫學、工業、軍事等領域的各種探測器和譜儀。
  13. The degradation of the performance of the system, which is caused by chromatic dispersion, gain fluctuation and fluctuation and non - linear effects in fiber, is analysed and some scenarios are suggested to solve them

    在對國內外wdm系統理論和實驗研究進展進行廣泛研究的基礎上，重點討論實現wdm系統的關鍵技術和如何克服色散、增益失衡和非線性等影響性能的因素。
  14. The renewal and reconstruction measures are made on the machine houses of the lifts, the gates, the lifts and the electric equipments concerned for the problems therein such as the aging, degradation, poor performance and the decrease of the safety factors of both the gates and lifts etc., from which better reconstruction effect is obtained at last

    針對其閘門及啟閉機老化、退化、性能落後、安全系數下降等問題，採取了封閉啟閉機房、閘門改造、更新改造啟閉機及電氣設備等措施，取得了良好的效果。
  15. A serially concatenated iterative scheme ( bpcm - id ) combining low - density parity - check codes ( ldpc ) with multilevel modulation is proposed. differ from other serially concatenated iterative decoding schemes, the whole iterative process of bpcm - id is divided into outer iteration and inner iteration to avoid too much errors feedback to the demapper which may cause severe degradation of decoding performance

    論文提出了一種新的多級ldpc碼的概念、基本特性、構造準則和搜索演算法，給出一種融合mlc / bicm的聯合編碼調制系統框架，與傳統mlc系統區別在於用一個多級ldpc碼取代多個分量碼。
  16. Electromagnetic compatibility ( emc ) is a cross - disciplinary science based on electromagnetism and drawing upon areas such as information science, electrical engineering, electronics, communications, materials and structures, etc. it is also an applied technology, which is used to study, under the conditions of limited space, limited time and limited frequency resources the compatibility of electrical and electronic devices and systems within the common electromagnetic environment without a degradation of performance

    電磁兼容（ emc ）是以電磁場理論為基礎，包括信息、電工、電子、通訊、材料、結構等多學科交叉的，研究在有限空間、時間和頻譜資源條件下各種電器、電子設備或系統在同一電磁環境中相互兼容，而不致引起其性能下降的應用科學技術。
  17. Electromagnetic compatibility ( emc ) is across - disciplinary science based on electromagnetism including information science, electrical engineering, electronics, communications, materials and structures, etc. it is also an applied technology, which is used to study, under the conditions of limited space, limited time and limited frequency resources, the compatibility of electrical and electronic devices and systems within the common electromagnetic environment without a degradation of performance

    電磁兼容（ emc ）是以電磁場理論為基礎，包括信息、電工、電子、通訊、材料、結構等多學科交叉的，研究在有限的空間、時間和頻譜資源的條件下各種電氣、電子設備或系統在同一電磁環境中相互兼容，而不致引起其性能下降的應用科學技術。
  18. Fourthly, since the missing between training and practical environments is the fundamental reason for the degradation of performance of automatic speech recognition, we have proposed a method to compensate and amend hmm to adapt noise environments. experiments show that better noisy robustness can be achieved, especially in stationary background noisy environments

    在語音特徵參數級去噪的基礎上，提出了一種基於hmm和倒譜特徵的噪聲補償方法，通過對純凈環境下的模型參數的補償與修正，實現訓練環境與測試環境的匹配。
  19. After analyzing the relationship among embedding parameters adjustment, attack elusion and performance evaluation, we construct an " evaluation - automatic adjustment " message embedding framework. some key issues of performance evaluation are investigated in this thesis : 1 ) evaluation of the image degradation

    本文分析了隱藏演算法參數調節、攻擊規避和性能評估之間的關系，提出了以「性能評估?自動調節」為核心的密信信號隱藏技術框架。
  20. Based on these analyses, a qos management method for paralleled ncss is put forward to figure out the increment of delays. and a qos management algorithm is also designed to provide a feedback way for resource scheduling, which could make a tradeoff between the degradation of network qos and the improvement of control performance

    在此基礎上，針對總線網路負荷增大的問題，結合網路控制系統的特點，提出對實行并行后的網路控制系統進行qos管理的思想，並設計了相應的qos管理策略，以求提供一種反饋式閉環資源調度策略，來協調因并行而增大的時延與系統性能提高的矛盾。
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