蜂比率 的英文怎麼說
中文拼音 [fēngbǐlǜ]
蜂比率
英文
peak ratio-
Dynamic assignment problem in a large cellular system can be formulated as an dynamic programming problem, by using java programming to simulate the rl arithmetic and fixed channel assignment, and comparing the blocking probability of them with the conditions of changing the cell configurations and parameters
把一個龐大蜂窩系統中的動態通道分配問題公式化為動態編程問題，採用java程序設計對動態通道分配的rl演算法與固定通道分配演算法進行模擬，在改變小區配置和不同參數設置的情況下比較了兩種通道分配方案的新建通話阻塞率。The mobile population coverage measures the percentage of inhabitants that are within range of a mobile cellular signal whether or not they are subscribers
移動蜂窩電話人口覆蓋率度量的是處于移動蜂窩電話信號覆蓋范圍內的居民百分比，而無論其是否是用戶。When every s. guan carried about 1 10 ^ 7 spores of coccoid beauveria bassiana, and touched the 4 5 - instar of m. alternatus larva with 1 : 1, 1 : 2 and 1 : 3, the ratios of m. alternatus amounts to s. guan amounts, the parastizing infecting death rates were 55 %, 75 %, and 100 % respectively ; s. guan carried coccoid beauveria bassiana to control m. alternatus in the wood section, and the rate was 87. 13 %
每隻管氏腫腿蜂攜帶球孢白僵菌約1 10 ^ 7個孢子時，對4 5齡松墨天牛幼蟲按蟲蜂比1 : 1 、 1 : 2和1 : 3接蜂，寄生感染死亡率分別為55 % 、 75 %和100 % ；管氏腫腿蜂攜帶球孢白僵菌防治木段內的松墨天牛幼蟲寄生感染死亡率為87 . 13 % 。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Through experimentation, we compare the heat performance of hhchp with that of a solar water heater of glass vacuum tube ( abbreviated as hgvt ). the heat performance of a solar water heater includes instantaneous efficiency, average heat efficiency and heat loss coefficient
通過大量的實驗，對蜂窩熱管平板式太陽能熱水器和全玻璃真空管式太陽能熱水器的熱性能進行比較，包括瞬時效率、日平均效率、熱損系數等。The use of digital radio transmission and the advanced handover algorithms between radio cells in gsm networks allows for significantly better frequency usage than in analogue cellular systems, thus increasing the number of subscribers that can be served
Gsm網路使用數線傳輸和先進的無線越區切換演算法，可以得到比模擬蜂窩系統好得多的頻率利用，因而增加了服務的用戶數。Method for the determination of c - 4 plant sugars in honey - stable carbon isotope ratio method
蜂蜜中碳- 4植物糖含量測定方法穩定碳同位素比率法Increase of unnecessary handoff and unbalance of the teletraffic among different cells. using fuzzy mathematical idea, the thesis proposes a fuzzy pcs ( ffcs ) algorithm, which takes into account of three main factors, i. e. the signal strength of common pilot channel ( cpich ), t
本論文綜合考慮了公用導頻通道（ cpich ）的信號強度、蜂窩的呼叫到達率和基站的可用功率三個主要因素，借鑒模糊數學思想，提出了一種模糊fcs （ ffcs ）演算法，並通過模擬對軟切換、 fcs和ffcs進行了性能比較。8psk is a new modulation scheme that is more bandwidth efficient than gmsk modulation scheme used in the gsm standard
為獲得比現有蜂窩系統更高的比特率， edge採用了新的調制方式? 8psk 。The average number of alleles per locus ( a ), percentage polymorphic loci ( p ), observed heterozygosity ( ho ) and wright ' s fixation index ( f ) is 2. 2, 77. 9, 0. 433, - 0. 138, respectively. the species also had higher variation than that of the other woody angiosperms widespread. moreover, e. mollis has higher population genetic variation than that of 26 long - lived woody endemics with narrow geographic distributions
Biosys - 2軟體計算得知，在翅果油樹種群中，每個位點等位基因的平均數a = 2 . 2 ，多態位點百分率p = 77 . 9 ，遺傳多樣性he = 0 . 375 ，遺傳多樣性水平明顯高於蜂媒植物，而且也比其它的廣布木本被子植物的遺傳多樣性水平為高。Power control is the key technology of cdma cellular system. in this paper, we present a power control algorithm based on partially compensating signal to interference ratio, and it can improve system capacity and system performance
功率控制是cdma蜂窩通信系統的關鍵技術.本文給出一種部分補償信干比的功率控制演算法，可以提高系統的容量，改善系統性能分享友人