排序方式： 共有126条查询结果，搜索用时 15 毫秒
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孙景云 《辽宁科技学院学报》2007,9(1):29-30
文章概述了高炉电动泥炮的主要机构及其转炮的工作情况,分析了高炉不停风更换转炮减速机蜗轮的原因,并提出更换转炮减速机蜗轮的方法. 相似文献
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西文经济理论专著选书参量研究 总被引：1，自引：0，他引：1
本文尝试通过对诺贝尔经济学奖获得者的研究核心学科、主要教育背景和工作经历、著作的出版社等选书参量进行定量化研究，为采选西文经济理论专著提供参考指标。 相似文献
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范丹 《廊坊师范学院学报(自然科学版)》2011,11(5):5-7
讨论单参数正态分布族的双边假设检验问题,是基于考虑在第一类错误的概率为α的检验类中如何求取一个第二类错误概率最小的检验。 相似文献
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PID参数自整定在温度控制系统中的应用 总被引：1，自引：0，他引：1
本文叙述了PID参数自整定在温度控制系统中的应用，设计井研制的温度控制系统。具有控制精度高、控制温度范围大、制冷响应速度快葶优点。本文建立了基于高精度温度控制的智能PID参数自整定方法——继电型参数自整定，实验证明，通过参数整定可以较好的实时改变汪拉仪的响应曲线。 相似文献
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技术成果转让价格的评估准则、方法与参数 总被引：2，自引：0，他引：2
技术成果的价格不是以其价值为基础，而是以它的使用价值带来的经济效益大小来确定．技术成果转让价格的评估准则是对其应用后产生的新增收益在转让双方之间的合理分配．根据贡献利益对称定价原则，正确运用收益现值法、利润分享率法和提成率法，合理确定其相应参数，为技术成果转让双方提供定价依据。 相似文献
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Ayd?n K?z?lkaya 《Journal of The Franklin Institute》2005,342(1):39-67
In this paper, the problem of estimating the parameters of a two-dimensional autoregressive moving-average (2-D ARMA) model driven by an unobservable input noise is addressed. In order to solve this problem, the relation between the parameters of a 2-D ARMA model and their 2-D equivalent autoregressive (EAR) model parameters is investigated. Based on this relation, a new algorithm is proposed for determining the 2-D ARMA model parameters from the coefficients of the 2-D EAR model. This algorithm is a three-step approach. In the first step, the parameters of the 2-D EAR model that is approximately equivalent to the 2-D ARMA model are estimated by applying 2-D modified Yule-Walker (MYW) equation to the process under consideration. Then, the moving-average parameters of the 2-D ARMA model are obtained solving the linear equation set constituted by using the EAR coefficients acquired in the first step. Finally, the autoregressive parameters of the 2-D ARMA model are found by exploiting the values obtained in first and second steps. The performance of the proposed algorithm is compared with other 2-D ARMA parameter and spectral estimation algorithms available in the technical literature by means of three different criteria. As a result of this comparison, it is shown that the parameters and the corresponding power spectrums estimated by using the proposed algorithm are converged to the original parameters and the original power spectrums, respectively. 相似文献
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From a number of ML estimators (typically unbiased) of practical interest which include the variance for a Gaussian distribution, the standard deviation for a Laplace distribution, the variance for a Rayleigh distribution and a “spread parameter” for a Cauchy distribution, we design robust estimators according to an emphasis balance between normalized performance and normalized robustness. We measure performance with inverted MSE and robustness with a differential geometric approach. 相似文献
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In Chomsky's Government and Binding theory, null subject is a kind of Empty Category, namely"pro". Whether subject can be empty constitutes an important parameter of universal grammar, called pro-drop Parameter which is often used to indicate the syntactic difference in human language. According to that, Chomsky divides human language into two categories:pro-drop language and non pro-drop language. The former one allows the loss of the subject, stood for by Italian, Spanish, Chinese, etc. The latter consists of English, French, etc. whose subjects cannot be omitted. Through a comparative study, taking Chinese and English as the examples, this paper aims to disclose the differences between pro-drop language and non pro-drop language. 相似文献