查询词典 model after

The model of the received power is established based on the basic principles of geometry optics and radiometry. This model provides the principle of receiver-transmitter design and performance evaluation. On the basis of the received power model and APD noise model, the response of measurement signal after passed through the frequency difference circuit and the corresponding change of its SNR are studied.

研究了非合作目标测距时，发射视场与接收视场的重叠情况，以及视场重叠区域内光的探测情况，并以此为基础，根据几何光学和光度学的基本理论，建立了非合作目标测距中接收光功率的数学模型，为接收/发射器的结构设计，以及测距性能的预测提供了理论依据。

Meanwhile, the index futures hedge theory has also get a further development, which evolves from traditional hedge theory, the selectivity hedge theory and modern hedge theories. After analyzing the merits and shortcomings of the three theories, the paper mainly studies four minimum square hedge theory models, which are The traditional static OLS model, VECM model, one variable GARCH(1, 1) model and one variable GJR-GARCH(1, 1, 1) model. Established on September 8th in 2006, China Financial Futures Exchange initiated a new era of our country finance ramification-- index futures, opening a door for the China futures industry.

而股指期货的套期保值理论也随之得到长足发展，历经传统套期保值理论、选择性套期保值理论和现代套期保值理论，本文在分析三大理论优缺点的同时，着重研究现代套期保值理论即最小方差避险理论的四种模型：传统静态OLS模型、VECM模型、单变量GARCH(1，1)模型、单变量GJR—GARCH(1，1，1)模型。2006年9月8日，中国金融期货交易所的成立，掀开了我国金融衍生品种股指期货的新纪元，迎来了中国期货行业发展的机遇期。

It analyzed impact principle, and researched viscidity and springiness model of soil. So the relation of impact and soil was found, and the dynamic model of impact bar-soil system was established. After analyzing and researching the model, a better dynamic model with soil impact character was gained.

针对土壤的物理特性，对冲击原理进行分析，并对土壤的粘弹性模型进行研究，建立冲击与土壤之间的联系，为土壤压实冲击测量装置建立了冲击杆—土壤系统的动力学模型，并对模型进行分析研究，简化出更适合土壤冲击特性的动力学模型。

Then, it studies the supply chain management system as a complex system to confirm the state existing during operating of the system. After that, it conducts a probability analysis on the state which the system located by applying supplement variable method, and establishes the model of distributed parameter system in a form of partial differential equations. Combining C0 ? semigroup theory in the functional analysis, it conducts a dynamic analysis on the established mathematical model. Using this method, it obtains the mathematical expression of the dynamic solution and the steady state solution, and proves the uniqueness, non-negativity and the asymptotic stability of the system solution. This dissertation applies the Matlab tool and uses two-step, three-step Simpson integral equation to imitate the condition of system solution. Then, it adds possible mode of failure and the optimization adjustment state to the system, based on which it has established the distributed parameter system model which is described by partial differential system of equations. Combining the functional analysis C0 ? semigroup theory, it studies the established mathematical model, and obtains the mathematical expression of the dynamic solution system and the steady state solution. It has proven the existing of uniqueness of the system solution, the asymptotic stability of system solution and the system solution. In addition, it has lying the theory rationale for further analysis and the research on the optimization of system.

本文首先简要综述了供应链理论、可靠性研究、鲁棒性研究以及供应链鲁棒性研究的现状；然后，将供应链系统作为一个复杂系统来分析，确定了系统运行过程中所经历的状态，通过引入补充变量的方法，建立了用偏微分方程组描述的分布参数系统模型，用泛函分析中的C_0 -半群理论得到了系统动态解和稳态解的数学表达式，证明了系统解存在的唯一性、非负性和指数阶渐近稳定性；并借助Matlab工具，利用二阶、三阶辛普森积分方程模拟系统解的性态，并给出系统动态解的仿真图；本文又对上述系统增加了系统可能失效状态和优化调整状态，并在此基础上建立了用偏微分方程组描述的分布参数系统模型，同样用泛函分析中的C_0 -半群理论对所建立的数学模型进行了研究，得到系统动态解和稳态解的数学表达式，证明了系统动态解存在的唯一性、非负性及渐近稳定性，为进一步分析和研究供应链优化奠定了理论基础。

The hyperbolic-type nonlinear model and rigid and perfectly-plastic model are usually adopted to simulate the constitutive behavior in tangent direction of contact surface. in fact, however, the hyperbolic-type nonlinear model can not definitely display the plastic flow deformation after shear failure while rigid-perfectly-plastic model can not describe the nonlinear deformation before shear failure.

对于土与结构间接触面的切向本构关系，目前通常采用双曲线非线性弹性模型或刚塑性模型来描述，但是，传统的双曲线非线性模型不能明确地表达剪切破坏后的塑性流动变形特性；而刚塑性模型又无法描述剪切破坏之前的非线性弹性变形。

MAIN OUTCOME MEASURES: At 15 days after model preparation, one rat was obtained from each group to underdone morphological observation. At 21 and 30 days after model preparation, 8 rats were killed in each group, hematoxylin-eosin staining and immunohistochemical method were used to detect the expression of the proliferating cell nuclear antigen, and to calculate fibroblast proliferation index.

主要观察指标：于造模后15 d各组取1只大鼠行组织形态学观察；造模后21，30 d，每组各处死8只大鼠，取材后，行苏木精-伊红染色，免疫组织化学检测增殖细胞核抗原的表达，并计算成纤维细胞的增殖指数。

In hypoxia/reoxygenation model(Na2S2O4), cell survival was enhanced and LDH in culture medium was reduced(P.05, P.01) after treated with 60, 30μgmL^(-1) Sanguis Draconis flavones. Enhanced cell survival and reduced LDH in culture medium(P.05, P.01) also observed in cytotoxicity model induced by H2O2 after incubated with 60, 30, 15μgmL^(-1) Sanguis Draconis flavones.

在缺氧／复氧(Na2S2O4)模型中，60、30μgmL^(-1)龙血竭总黄酮能显著降低培养液中的LDH浓度，增强细胞活力(P.05， P.01)。60、30、15μgmL^(-1)龙血竭总黄酮能抑制H2O2引起的损伤，降低培养液中LDH的浓度，增强受损细胞活力(P.05， P.01)。

Results showed diural variations of leaf Pn displayed bipeaked curve model, indicating the depression of photosynthesis at noon. Leaf Pn rate in June was higher than in September; Compared to leaf Pn, Cs had a similar changing curve, Cs in June was higher than in September. While diural variations of intercellular CO2 concentration were opposite to that of leaf Pn and Cs, decreased before 1200,increased after 1200, decreased again at 1600,after 1600 increased again; diural variations of climatic factors displayed single peaked curve model, peakedvalue occurred at 1400,and their influences on physiological factors were indirected and integrated.

结果表明，光合速率的日变化具有双峰型，存在光合午休现象，6月的光合速率高于9月；沙棘的气孔导度较低，其日变化与光合速率有相似的变化趋势，6月的气孔导度大于9月；细胞间CO2浓度的日变化与光合速率和气孔导度的日变化相反，1200之前下降，之后上升，1600下降，然后上升；气象因子的日变化具有单峰型，峰值1400出现，对生理因子的影响是间接且综合的。

Objective To investigate the interrelationship between the expression of VEGF and the oncosis of neuron after ICH by establishing the rat ICH model through the expression of oncosis of neuron after ICH and the cell location of VEGF-positive cells in perihematoma and the expression of VEGF. Methods The rat ICH model was induced by two-step.

目的 通过建立大鼠脑出血动物模型观察血管内皮生长因子在出血灶周的细胞定位和动态表达变化和脑出血后神经细胞胀亡时程表达以探讨两者之间的相关性。

Results The mortality rate of mice in 80 mg/kg, day cyclophosphamide group was 16.7%, and T level [ at 30th day :( 1.38 ± 0.31 );45th day:( 1.15 ± 0.26 ) ] and T/LH ratio [ at 30th day:(0.163 ± 0.014); 45th day:(0.127 ± 0.023 ) ] were significantly decreased (all P＜0.05) at 30th day after induction;The concentration of MDA [at 15th day:(2.70 ± 0.41);30th day:(2.710.36);45th day:(2.67 ±0.43) ] was maintained at a high level (all P＜0.05) during the 45 days ; Number of Leydig's cells [ at 15th day:(9.65 ± 0.75 ); 30th day:( 14.05 ± 0.67 ); 45th day:(8.49 ± 072)] and layers of spermatogenetic epithelia [ at 15th day:(4.75 ± 0.82);30th day:(3.60 ± 0.49);45th day:(3.74 ± 0.43 ) ] were significantly decreased ( all P ＜ 0.01 ) and stabilized in a low level. The induced model was stable and the mortality rate was acceptable. In the 60 mg/kg, day cyelophosphamide group, the T level and T/LH ratio had no significant change (P ＞ 0.05 ), and the concentration of MDA ,number of Leydig' s cell and layers of spermatogenetic epithelia recovered at 30th day after induction. The induced model was unstable.

结果 剂量每日为80 mg/kg体重小鼠成模后死亡率为16.7%，血清T[30 d：(1.38±0.31)；45 d：(1.15±0.26)]及T/LH比值[30 d：(0.163±0.014)；45 d：(0.127±0.023)]于诱导后第30天出现显著下降(P均＜0.05)，而诱导后睾丸组织内MDA含量[15 d：(2.70±0.41)；30 d(2.71±0.36)；45 d：(2.67±0.43)]维持高水平(P均＜0.05)，生精上皮层次[15 d：(4.75±0.82)；30 d：(3.60±0.49)；45 d：(3.74±0.43)]和间质细胞[15 d：(9.65±0.75)；30 d：(14.05±0.67)；45 d：(8.49±0.72)]均显著减少(P均＜0.01)并稳定于低水平，模型稳定，死亡率适当；每日60mg/kg体重组小鼠血清T及T/LH比值于不同时段并未出现明显变化(P＞0.05)，且睾丸组织内MDA含量、生精上皮层次和间质细胞计数在30 d后有所恢复，模型不稳定；每日100 rag/ks体重组死亡率为30.0%，死亡率过高。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。