在改进
- 与 在改进 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.
在结构辨识中,常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失,因此,本文提出了新的有益思想,即在保留一定相关性的基础上进行辨识:将输出向量ΔW与环境函数矩阵S构成增广矩阵A,然后采用"比定阶行列式"来剔除相关向量的方法,这样既可以尽可能多地保留了对落点影响大的强相关参数,又可以对落点影响小的强相关参数给予剔除;在参数估计中,改进了特征根估计中特征根和特征向量的筛选方法,提出"近零"准则,从而大大提高了参数估计的精度;再者,鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的,因此,本文又深入分析了造成天地模型不一致的原因,提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验;最后,鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响,因此本文深入地分析了SINS制导工具误差系数与外界环境的关系,提出了基于过载变化大小的分段辨识和分段实时补偿的算法。
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Decomposition to plane circuitry's pin, then aborative go along transmit and insulate inspect, eliminate circuitry malfunction. Aborative analyze to design circuitry, find out join circuitry of flap electric operation system with undercarriage control and beaconage's join circuitry existed circumfluence phenomena. Bring about when undercarriage control signal system electrify inspect, under flap system are not power supply, current from undercarriage signal breaker come by undercarriage signal box, to flap system's flap control box, flap electromagnetism clique form loop. Lead to the flap put down under flap system are not power supply. Design principium existing serious limitation, put forward ameliorate project.
通过对机上线路的插头进行分解,进行导通和绝缘检测,排除了机上线路故障;通过对设计线路进行分析,发现在襟翼电气操纵系统与起落架收放操纵及信号系统的交联线路存在回流现象,致使在起落架收放操纵及信号系统通电检查时,襟翼系统不供电的情况下,电流从起落架信号断路器经过起落架信号盒,到襟翼系统的襟翼控制盒、襟翼电磁阀形成回路,导致襟翼在不给电的情况下被放下,设计原理存在严重的缺陷,提出了改进方案。
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The mid-tone was improved and now we can see the reddish Bougainvillea in the middle. Because of the poor quality of the original picture (it was taken from a phone camera) we can't do much more about the definition but a lot more can still be done to enhance the picture's color. In the next posts we will look at how to mask some parts of the picture so as not to affect the entire thing when applying changes.
中语气改进,现在我们可以看到,红色九重葛,在中东,因为质量差的原始图片,我们不能做更多的有关定义,但有很多更仍然可以做,以提高图片的颜色,在未来的职位,我们将会研究如何在掩盖部分图片,以免影响整个事时,申请的变化。
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All along strictly during the past 4 years, insist that benefit readjusts oneself to a certain extent in the first , press the customer close to a marketplace , deal with concrete matters relating to work being innovative, debut new low style price unceasingly according with the high-quality goods that the consumer needs, unceasingly, unfinished products has been innovative grinding the transitive hair stream distribution and has made great efforts to improve on after-sale services, and has got very excellent results , brand notability gradually rise, market share is also more and more big , be also attracting illegitimate malicious calumniation of a few bad companies therefore, If publishing fictitious invitation of relevance and article on the network, be in progress to my company calumniate, my company warns these of malicious calumniation person here, solemnly and justly: My company will reserve pertinent litigation rights, to the normal business affecting my company, the company will apply a legal weapon to defend legitimate rights and interests
4,四年来,我公司一贯严格要求,坚持把客户利益放在第一位,贴近市场,务实创新,不断推出新款式低价格符合消费者需求的优质产品,不断在产品创新研发及物流配送和售后服务上努力改进,并取得了非常优异的成绩,品牌知名度日益提高,市场份额也越来越大,正因此,也引来一些不良公司的不正当的恶意中伤,如在网络上发布相关子虚乌有的帖子及文章,对我公司进行诋毁,在此,我公司严正警告这些恶意中伤者:我公司将保留相关的诉讼权利,对影响我公司正常业务的,公司将运用法律武器维护正当权益
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At the same time, combining with the actual condition of delivery pipeline of our country and some prevalent leak detection and location methods, this paper raised a method, which is based on wavelet analysis and negative- pressure-wave to detect and locate the leakage. Jobs in the paper are as follows:As affected by gas density, pressure, specific heat and pipe material, the velocity of negative-pressure-wave improved depending on the energy conservation. At one time, taking the affection of velocity of gas flow, the location formula was modified in some degree.When locating the leaks with location formula, the iterative approach algorithm was adopted as a new method to increase the location accuracy level of system.Multi-scale decomposition and reconstruction of wavelet transform is utilized to filter the noise of negative-pressure-wave, which was brought by leakage. With the capacity to detect the signal singularity fast and accurately, wavelet transform was used to catch the break point of pressure signal. The work improved the accuracy of At in location formula, accordingly improved the location accuracy.Wavelet is a suitable tool for signal analysis. The distinct character is that the mother-wavelet is of optional. That means choosing different mother-wavelet will get different analysis result. So we studied how to choose mother-wavelet and its scale for signal singularity detection. The method is to choose a wavelet by regularities of the wavelet and the signal.Finally, a plan, which bases on SCADA system for inspection and detection of natural gas leakage, is proposed in the article.
其中,主要进行了以下几方面的工作:针对泄漏产生的负压波在管道中的传播速度受媒介的密度、压力、比热及材质等因素的影响,而非声波在空气中传播的速度,本文利用能量守恒原理,对其进行了修正;考虑到管内气体流速对压力波速的影响,对原始的负压波定位公式进行了一定程度的改进,并在利用定位公式进行泄漏点定位时采用逐步迭代逼近算法,提高了系统的定位精度;利用小波变换的多分辨率分解和重构技术,对采集到的管道发生泄漏时产生的负压波信号进行了降噪处理;并利用小波变换技术对信号奇异点的快速、准确的识别能力,对经上述消噪后的负压波信号进行了奇异点捕捉,精确捕捉的结果提高了定位公式中上下游站点采集到的负压波奇异点的时间差△t的精度,从而进一步提高了定位的精度;考虑到小波变换是一种基波可变的信号分析工具,也就是说,不同的小波基波对信号分析的结果将有很大差别,这势必影响最终的处理结果,因此,我们又对比分析了本课题中小波基及尺度的选择问题,依据规则性系数相似性原理对母小波的选择进行了探索性研究;最后,还提出了基于SCADA的泄漏检测与定位系统的软件开发构想及系统的嵌入方案。
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In this thesis,the fabrics used in reinforced composites have had a significant improvement in weave technology,they can bind seven layers reinforcement yarns into fabrics with warp yarns which move by chain stitch or tricot stitch,and the direction of any layer yarns can be changeable.
在本课题中,作为复合材料增强体的织物,在编织工艺上已经有了很大的改进,它是可以一次将七层增强纤维纱线平行并列通过做编链或经平运动的经纱束缚在一起而形成的一织物,并且各层中纱线的取向可以任意调节。
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PSO is a population-based optimization algorithm, which mimics the social behavior of animals in a flock. It makes use of individual and group memory to update each particle position allowing global and local search optimization. The objective function considered was the total weight of the structure subjected to stresses, displacements and forces constraints. The effects of the parameters were investigated as well and such combination of tuning parameters promote a better global search behavior avoiding premature convergence while rapidly converging to the optimal solution. Results showed the effectiveness of the proposed method by comparing with ANSYS Design Optimization Tool (zero-order method). The PSO with the tuning parameters makes it an ideal method for offshore wind turbines foundations optimization tasks.(2) A reliability analysis method for pile foundation bearing axial loads based PSOThe performance function of pile foundation's axially bearing capacity sometimes is nonlinear and complex, on the basis of geometric meaning of structural reliability index, an optimum model with PSO for structural reliability analysis under arbitrary random variables was established, The PSO algorithm is very efficient to solve global optimization problemsIts use in structural reliability field presents not only the advantage of its facility of implementation, but also the possibility to obtain the design point and the failure probability with a good accuracy. In addition, PSO is a zero order algorithm, for no derivative is necessary for its implementation.
本文的研究针对桩式海上风机基础结构的特点,在国内外有关研究成果的基础上对海上风机基础结构优化设计理论和可靠度方法一些相关问题进行了较为深入的研究,具体做了以下几个方面的工作:(1)基于粒子群优化的桩式海上风机基础确定性优化设计方法桩式海上风机基础的优化设计是一个复杂的、非线性约束的优化问题,针对传统的基于梯度信息的优化方法在处理非线性问题中易陷入局部最优解的问题,本文将一种耦合惩罚函数的PSO算法引入到海上风机基础结构概念设计中,PSO算法是从群体动物聚集觅食这一活动中受到启发而发展的,该算法利用个体和群体的信息共享不断改进自身的位置从而进行局部和全局最优搜索,本文中以桩和三脚架连接段直径及壁厚为设计变量,以基础总重量作为优化的目标函数,在给定的约束条件下建立了三脚架基础优化数学模型,另外本文还研究了PSO参数变化对结果的影响,协调的参数组合可以避免陷入早熟收敛而能够快速的获得全局的最优解,通过与ANSYS优化模块的计算结果比较验证了该方法的有效性,本方法为海上风机基础的确定性设计提供了一条有效的途径。
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Especially, its operation does not depend on packet dropping. In chapter 5, we have analyzed the relation between link rate and link price of the Newton-like algorithm, which is proposed by Low et al to solve the utility function. And then we reduce the convergence procedure of Newton-like algorithm to a simple recursive procedure along a convex curve after the reduction and mathematical derivation. Thus, we found the reason that leads to the severe fluctuation of the sending rate during its convergence procedure, and then proposed our improved algorithm.
在第五章,我们在对Low等人提出的用于解决效益函数的Newton-like算法的链路速率与链路价格之间关系的深入分析的基础上,经过简化和数学推导,我们将其收敛过程归结为沿着一个凸曲线的非常简单的收敛过程,由此找到了导致Newton-like算法收敛过程中信源速率振荡剧烈的原因,在此基础上,我们提出了一个改进的链路算法。
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A new pattern generation method is proposed which contributes to improvement of the performance of a handwritten Chinese character recognition system. By using this pattern generation technique, we increase the number of learning patterns by using transform method with cosine function.
在这种背景下,本文的研究目的就是参考国内外最新研究进展,在PRIS实验室的技术积累基础之上,在"金融票据OCR系统中的成套关键技术"的国家863项目的支持下,对金融票据OCR系统中的关键技术进行研究和改进,并结合最新的信息检索领域的应用,提出相应的解决思路。
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More than 10 years, I heard the company's customers valuable advice and technical absorption silk gun manufacturers, continue to improve, accumulated experience in various aspects, such as: absorption of silk Qiangtou, brothers and ceramic manufacturers have adopted easy Pengsui suction head, will not only affect production , Also increased equipment costs, we head into metal and greatly reduce the cost, a further absorption silk guns into the trachea and the row of silk from the centre, other manufacturers in 36 mm, and we changed to 38 mm, for users to replace the intake manifold, Pai more convenient when the silk, silk guns in the absorption of the two guns, made the point that hole, so it's suction row wire was also larger, users have won, we Asia and China over the years the company pursues " Is the quality of corporate life, the user is God, reasonable prices, better quality,"the purpose, we now more than 100 domestic and chemical fiber enterprises have long-term business, the company specializes in chemical fiber processing machinery parts.
十多年来,我公司听取了用户的宝贵意见,在吸丝枪制造技术上,不断改进,积累各方面经验,如:吸丝枪头子,兄弟厂家都采用陶瓷吸头容易碰碎,不但影响生产,还增加设备费用,我们改成金属头子,大大降低了成本,再有吸丝枪的进气管与排丝管中心距离,其他厂商于36mm,而我们改为38mm,为用户在更换进气管、排丝管时更为方便,在吸丝枪内的二级喷头中,孔的角度作了修正,所以它的吸力排丝量也较大,得到用户的好评,我们亚华公司多年来奉行"质量是企业生命,用户是上帝,价格合理,质量更优"的宗旨,目前我们与国内一百多家化纤企业有着长期业务往来,本公司专业加工化纤机械配件。
- 推荐网络例句
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I will endeavour to find you some assistance.
我尽力帮你找人帮忙。
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At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.
起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。
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Ah may dee:You are chinese living in a democratic country.
你是居住在民主国家的中国人吧。