排序方式: 共有81条查询结果,搜索用时 625 毫秒
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In this paper, we consider the following semiparametric regression model under fixed design: yi=xi1β g(xi) ei. The estimators ofβ, g(·) andσ2 are obtained by using the least squares and usual nonparametric weight function method and their strong consistency is proved under the suitable conditions. 相似文献
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以TH-100添加剂助熔,采用燃烧-电导法测定玻璃中的三氧化硫,65s即可测出三氧化硫的百分含量。 相似文献
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In this article, a partially linear single-index model /or longitudinal data is investigated. The generalized penalized spline least squares estimates of the unknown parameters are suggested. All parameters can be estimated simultaneously by the proposed method while the feature of longitudinal data is considered. The existence, strong consistency and asymptotic normality of the estimators are proved under suitable conditions. A simulation study is conducted to investigate the finite sample performance of the proposed method. Our approach can also be used to study the pure single-index model for longitudinal data. 相似文献
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本文以鸡蛋壳为原料,对高温煅烧分解蛋壳,中和法制备醋酸钙的最佳反应条件进行了研究,产出率达93.8%。 相似文献
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运用高效液相色谱法测定连钱草中迷迭香酸含量. 方法:运用Hypersil ODS(4.6×250mm, 5μm) Agilent分析柱进行测定,流动相:甲醇- 0.1%磷酸(40:60);流速:1mL/min;检测波长 :330nm;柱温为25℃. 结果:迷迭香酸与其它组分的分离效果好,且在0.15~3.06μg内呈良好的线性关系(r=0.99998),平均回收率为99.3%(RSD=1.1%,n=6).结论:该测定方法能有效地消除连钱草中其它成分的干扰,简便易行,重现性好,可作为连钱草质量控制的定量依据和含迷迭香酸植物资源调查的分析依据. 相似文献
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我国是最大发展中国家,对能源需求量巨大,同时由于历史原因,我国能源消费结构结构单一。从我国一次能源消费结构和世界总体比较,能源过度依赖煤炭资源;随着我国经济转型和减速,煤炭行业全行业产能过剩;生存环境关系到每一个人,雾霾天气逐渐演化为社会问题,调整能源结构已成为发展方向,煤炭发展应适应我国能源整体发展方向。 相似文献
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新刑事诉讼法第275条规定了未成年人犯罪记录封存制度,明确了办案机关对未成年人记录的封存义务。但检察机关如何在司法实践中予以实行,这是一个值得探讨的问题。 相似文献
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In this paper, we establish a the LaSalle's theorem for stochastic differential equation based on Li's work, and give a more general Lyapunov function which it is more easy to apply. Our work has partly generalized Mao's work. 相似文献