genetic gain 中文意思是什麼
genetic gain
解釋
遺傳獲得量-
The more rigorous the thinning, the greater the possible genetic gain.
疏伐越是嚴格，就越可能有較大的遺傳增益。 -
The numerical simulation equations of the border curves in term of and as well as the matching rules and the frequency dependence of microwave electromagnetic parameters of a broad - band homogeneous absorbing coating with a finite value of reflection loss are available. these results pointed out the direction to develop rams ". according to the radar - absorbing model, the optimized design of rams with thin - layer, light - weight, broadband and strong - absorbing is available by the simple genetic algorithms, which can effectively conduct the research work of rams to the detail. small but completely, the electromagnetic parameter ' s databases of rams that based on actual microwave absorbers have been set up, the object function has been constructed which conform to the involved goals, the adaptive coding measure is taken which extends the coding length dynamically adapting to the condition of the number of actual absorbers or the precision of thickness and absorber - volume - percentage, the decoding technique is initiated which satisfies light - weight and strong - absorbing as well as thin - layer and broadband by adopting of tracing variable restricting conditions dynamically to control total thickness. when decoding, the variable restricting conditions of thickness are dynamically traced, so gain the radar absorbing coatings of light - weight multiple - layer single - ingredient. similary, of thickness and absorber - volume - percentage, of light - weight multiple - layer multiple - ingredient. also, the rams ' demand to radar - absorb performance as frequency is met making use of the penalty function
作為遺傳演算法的具體實施：根據本實驗室近來研製的吸波材料，建立了吸波材料的相關數據庫；構造了能真實體現「薄、輕、寬、強」優化目標的目標函數；根據材料的實際數量以及塗層厚度精度要求、吸收劑體積分數精度要求，建立了能動態擴展相應碼長的自適應編碼方法；首創了通過動態跟蹤變量的約束條件來控制塗層總厚度的解碼技術，以此實現了在不弱化寬頻、高強的吸波性能目標的同時，兼顧到薄層、輕質的使用性能要求；在解碼時通過動態跟蹤厚度變量的約束條件，實現了多層單組分吸波塗層對重量輕的要求；通過動態跟蹤厚度變量的約束條件和吸收劑體積分數的約束條件，實現了多層多組分吸波塗層對重量輕的要求；使用權重系數變化法，實現了吸波塗層的分頻段吸波性能要求。 -
The selection effect was evident that 37. 5 % gain in single individual seed yield could be obtained, which achieved the purpose of improving seed orchard yield and increasing the genetic gain
8年生子代材積可獲得改良增益10 . 6 % ，木材比重可獲得4 . 6 %的增益，種子園單株產種量可獲得增益37 . 5 % ，選擇效果明顯，達到提高種子園產量、增加改良增益的目的。 -
The main factors influencing agrobacterium - mediated genetic transformation of portulaca grandiflora hook, are as follows. the concentration of kanamycin of devision leaves and the calli were 100mg / l and 200mg / l, respectively. calli infection can gain more gus gene transient expression and resistant tissuses than devision leaves
對松葉牡丹進行遺傳轉化研究發現，採用葉片作為外植體時， kan的濃度100mg / l就可抑制愈傷的誘導，而用愈傷組織作為材料感染時濃度要達到200mg / l才可。 -
Many technologies of electrically small antennas and wide band antennas are discussed in theory, simulation and experiment. and some novel electrically small or wide band antennas are proposed. the loaded monopole is analyzed in depth integrating the genetic algorithm ( ga ) with the method of moments ( mom ) in order to increase the gain and decrease the vswr of antennas used at hf / vhf band
在本論文的研究過程中，通過合理利用各種現有的天線寬帶化和小型化的理論成果、有效的綜合各種技術措施，運用矩量法和遺傳優化演算法等數值方法，深入研究了加載單極子天線問題，旨在全面提高高頻/甚高頻頻段內的天線增益和降低電壓駐波比，以獲得較高增益的、基本滿足駐波要求的小型超寬帶天線。 -
In the layout and the designing of the allocating and trasportation system, the research set up a suitble mathmatic model according to the allocating and trasportation of topmin development co., ltd. it solves the model using the genetic algorithm and program. by applied in optimization route module of system route, it can gain the expected results
並在實際運用中得到較好的效果，為企業的物流運作節省了成本，提高了效率。本研究在整個物流配送系統的規劃與設計中，根據達明公司的物流配送運作建立其適用的數學模型，並通過遺傳演算法及程序來求解該模型。 -
Hisityl - trna synthetase catalyzes the aminoacylation of trnahis in the initial step of protein biosynthesis. the involumen of histidyl - trna synthetase in autoimmune diseases is another feature of the enzyme. in studies, it is reported that purified jo - 1 antigen can increase the detection rate of anti - jo - 1 antibody. but it is difficult to obtain a single component by biochemical extraction. genetic engineering can help us to desolve this problem. after looking up mrna sequence encoding histidyl - trna synthetase in genebank, we used rt - pcr technology to gain its full length dna sequence. the vestor ptybllwas used in the construction of expressing vestor. we transformed the jo - 1 gene into er2566 and used this system to express fusion jo - 1 antigen
本實驗從人胎盤中提取總rna ，利用rt - pcr技術獲得了編碼jo - 1的基因整長序列，選用impact - cn系統中的ptyb11載體，構建了jo - 1基因的克隆與表達載體，並轉化大腸桿菌er2566 ，經過抗性篩選、分子量大小比較、雙酶切鑒定、和pcr鑒定等多種方法驗證，篩選出了5個陽性克隆。 -
After the optimization, a certain stability allowance and a certain performance index are obtained for the fuzzy controller through introduction of the small gain theorem for ensuring the system stability and optimization of the parameters of the controller with the norm bound based on with the genetic algorithm
利用小增益理論確保控制系統的穩定，採用范數度量模型集的界，用遺傳演算法優化控制器參數，使得優化后模糊控制器具有一定的穩定裕量和一定的性能指標。 -
The reclamation work is a money consuming, lot items effecting and conditions restricting and complicated work layout questions. to gain the economic benefit earlier, efficient technique and methods are necessary to get the optimum layout scheme. in this paper the simple genetic algorithms, good at dealing with the complicated questions, are applied to the complicated layout problems
圍海工程是一項費用大、影響因素和約束條件多且十分復雜的工程問題，為盡早獲得經濟效益則有必要採取有效的技術和方法以尋求最優規劃方案，研究了綜合復雜因素下的圍海規劃，論文採用了基本遺傳演算法。 -
Secondly, novel genetic algorithm is developed to optimize the wavelength and power value of the pumping sources in the mutli - wavelength backward pumping fra to get the best gain flatness
第二設計新型的遺傳演算法，結合前面提到的多維并行打靶法來優化多波長後向泵浦fra各個泵浦光的波長、功率值，以得到更好的增益平坦度。 -
Thus, the equalizer should alter its gain spectrum as the edfa ' s operate point changes. based on the theory of thick grating, characters of vpg ' s transmissive gain spectrum were studied. using the genetic algorithm, novel dge ( including several vpgs ) was designed
本文根據體相位光柵的理論，研究了體相位光柵增益譜隨各參數的變化，並根據體相位光柵的增益譜特性，藉助遺傳演算法，用多個體相位光柵實現了edfa的動態增益補償。 -
After briefly introduce the basic genetic algorithm ( ga ) theory, aimming at the " prematurity " of basic genetic algorithm, we put forward a new improved genetic algorithm, the basic genetic algorithm combine simulate anneal ing ( gasa ), to meliorate the local search ability of basic genetic algorithm. because many design problems, such as the preliminary fuzzy rule and input and output membership fuction are hard to gain and the learni ng process of fuzzy neural network ( fnn ) is slow and local optimization, we design the fuzzy neural network excitation controllers of turbine generators with genetic algorithm combine simulate anneal ing ( gasa )
本文首先介紹了水輪發電機勵磁控制方式和軟計算理論的發展，然後介紹了遺傳演算法的基本理論，針對基本遺傳演算法存在的「早熟」現象，介紹了一種遺傳演算法結合模擬退火的改進型遺傳演算法，改善了基本遺傳演算法的局部搜索能力。鑒于常規模糊神經神經網路勵磁控制器設計方法中存在著初始模糊規則和輸入輸出隸屬度函數難以確定以及模糊神經網路訓練緩慢和難以達到全局最優等問題，利用遺傳演算法結合模擬退火的改進型遺傳演算法來設計模糊神經網路勵磁控制器。 -
The unbalanced development of biotechnology and the unbalanced distribution of genetic resources, the huge economic gain brought from seeking genetic resources, which not only cause the ignorance of the preservation of genetic resources, but also make the genetic resources providing countries and their citizen suffer a lot in the course of the benefit - sharing in the exploitation of genetic resources
實踐表明，當遺傳資源應用於工商業領域后，其帶來了巨大的經濟利益。但是，世界上存在著遺傳資源分佈不均衡與生物技術發展不平衡的矛盾，利用遺傳資源所產生的這些經濟利益受到發達國家的覬覦。它們一般擁有先進的生物技術，而遺傳資源卻相對匱乏。 -
Control systems in modern automatic engineering are nonlinear, time - changed and indefinite. lt is difficult to model by traditional method, even sometime impossible. under these circumstances we should apply model identification to gain the approximate model of object for effective control, there are many models to be chosen, fuzzy model is one of them, it is put forward with the development of fuzzy control. fuzzy model has characteristics of general approximation and strong nonlinear, it is fit for describing complex, nonlinear systems. to avoid rules expansion when the number of input values are very big. in this paper we apply hierarchical fuzzy model to resolve this problem, we also illustrate it has general approximation to any nonlinear systems. genetic algorithm is a algorithm to help find the best parameters of process. lt has abilities of global optimizing and implicit parallel, it can be generally used for all applications. in our paper we use fuzzy model as predictive model and apply ga to identify fuzzy model ( including hierarchical fuzzy model ), we made experiments to nonlinear predictive systems and got very good results. the paper contains chapters as below : chapter 1 preface
現代控制工程中的系統多表現為非線性、時變和不確定性，採用傳統的建模方法比較困難，或者根本無法實現，在這種情況下，要實現有效的控制，必須採用模型辨識的方法來獲取對象的近似模型，並加以控制，目前用於系統辨識的模型種類很多，模糊模型是其中的一種，它隨著模糊控制的發展而被人提出，模糊模型具有萬能逼近和強非線性的特點，比較適合於描述復雜非線性系統，為了解決模糊模型在輸入變量較多時規則數膨脹的問題，文中引入遞階型模糊模型，並引證這種結構的通用逼近特性。遺傳演算法是模擬自然界生物進化「優勝劣汰」原理的一種參數尋優演算法，它具有隱含并行性和全局最優化的能力，並且對尋優對象的要求比較低，在工程應用和科學研究中，得到了廣泛的應用，本文將遺傳演算法引入模糊模型的辨識，取得了很好的效果。 -
Low noise amplifier using fet is adopted in the rf block of smart antenna both at 3. 95ghz and at 1. 9ghz. in the design process of lna, the author applies genetic algorithm in the optimization of gain and noise figure
兩套射頻電路的低噪聲放大器電路均採用了兩級場效應管放大，在其增益及噪聲的優化過程中採用了遺傳演算法這一全局搜索性能較好的數值演算法。
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