random occurrence 中文意思是什麼

random occurrence 解釋
隨機出現
  • random : n 〈罕用語〉胡亂行為，偶然的[隨便的]行動[過程]。adj 1 任意的，胡亂的，隨便的；（話等）信口亂說的...
  • occurrence : n. 1. （事件的）發生，出現，有；【礦物】存象，（礦床等的）埋藏；產地。2. 遭遇，事件，事故。
  1. Spatial distribution and time scales of atmospheric diffusion over beijing area are revealed by means of a random walk simulation model and practical meteorological data with a specified emission source from the city. results show a southward transport pattern for wintertime while a northwest transport of pollutants in summer. the area is the least evidently influenced by the emission source in spring, while the largest in autumn. the time spent for instantly emitted material removing from the model domain varies from winter - spring to summer - autumn. the former was shorter one of less than 20 hours ; the latter was longer one of approximately 30 hours. distribution of occurrence probability for different removal times was not symmetry. reducing slowly at the end of longer removal time, probability exists for pollutants remaining in this area a long time

    結果表明，冬季示蹤物偏南夏季偏西北的輸送明顯春季擴散影響范圍最小秋季最大。示蹤物從200km200km模式區域輸出的平均時間去除時間明顯分為冬春季和夏秋季兩組，前者較小，平均在20h以下，後者較大，平均約30h 。不同去除時間出現的頻率分佈是非對稱的，在長去除時間一側，出現頻率下降緩慢，顯示污染物有在該區域內長時間滯留的可能。
  2. In order to meet the needs of recent research in applied probability, such as finance and insurance, risk theory, random walk theory, queueing theory and branching processes and so on, the concepts of heavy - tailed random variables ( or heavy - tailed distributions ) are introduced. they are one of the important objects many scholars are concerned on. on the other hand, in a risk process, the number of these heavy - tailed variables " occurrence until the time t, i. e. all kinds of counting process, is one of the important objects, which many scholars are studying

    在應用概率的許多領域，如金融保險、風險理論、隨機游動理論、排隊論、分支過程等，重尾隨機變量或重尾分佈都是重要的對象之一，另一方面，在一個風險過程中，到t時刻時，這些重尾變量出現的個數，即各種記數過程，也是人們研究的主要對象之一，本文主要對重尾分佈的控制關系與極值過程的跳時點過程的精緻漸近性進行深入的討論。
  3. The comprehensive effect of the weather - related disturbances and global warming may be the reasons for the occurrence of the warm extremes in chongqing and sichuan in the summer of 2006, but the random weather - related disturbances contribute most to the local warm extremes in last summer

    初步分析表明， 2006年盛夏川渝的異常高溫事件可能是受全球變暖和天氣擾動共同作用的結果，但以天氣擾動的影響為主。
  4. Having, producing, or being a value obtained from a statistical test that lies within the limits for being of random occurrence

    非顯著的指含有、產生或是處于偶然變差限度之內的數據測試而獲得的數值的
  5. Under the reality conditions, the occurrence probability of event shows fuzzy and random, the fuzzy number is inducted into the causality diagram in this paper, and it can solve the difficulty of obtaining the precision probability value as well as solve the problem of the fuzzy and random of the occurrence probability of event

    針對實際情況事件發生概率具有模糊性和不確定性的特點，文章將模糊數引入因果圖中，解決了獲取事件發生概率精確值的難度，又使因果圖能處理帶模糊性和不確定性的問題。
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