A Second Order Training Algorithm for Multilayer Feedforward Neural Networks

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试论《行政许可法》颁布后的治安管理

《行政许可法》颁布后，公安机关的治安管理职能发生较大的转变，前置审批权削弱，临场检查任务量加大。公安机关的治安管理部门应通过工作重心从事前审批到事中监督和事后查处上的转移，改革传统的只管不查模式，提高治安管理工作效率。     

期刊全流程数字出版探索与实践 ——以《光学学报》为例

随着互联网技术的不断发展,科技期刊面临重要转型。如何推动科技期刊数字化出版建设、媒体融合发展,快速提升期刊的影响力成为一个重要课题。本文以融媒体技术手段为依托,详细总结了期刊在选题策划、稿件处理、多模式出版、融媒体服务等方面的数字化建设经验,以供其他科技期刊学习和借鉴。     

洪秀全妇女思想之"耶儒合流"——以"一言两书"为例

《劝世良言》、《钦定旧遗诏圣书》和《钦定前遗诏圣书》对洪秀全思想影响巨大,洪秀全"男女平等"思想、禁止奸淫妇女和反对淫乱思想、"为妇之道"思想、多妻制思想、对待女奴婢的思想以及妇女贞节观皆同这三本书有着直接的渊源关系,它们是洪秀全"耶儒合流"思想的主要来源.但从实质上看,洪秀全的妇女观仍然是中国传统的封建伦理道德观,而且在西方上帝的宗教招牌下有过之而无不及.洪秀全不可能具有男女平等的思想.     

Comparison of high order aberration after conventional and customized ablation in myopic LASIK in different eyes of the same patient

Purpose: To verify whether there exists any difference in higher order aberrations after undergoing myopic LASIK (laser in situ keratomileusis) with conventional ablation and customized ablation in different eyes of the same patient. Methods: This was a prospective randomized study of 54 myopic eyes (27 patients) that underwent LASIK using the Nidek EC-5000 ex-cimer laser system (Nidek, Gamagori, Japan). Topography-guided customized aspheric treatment zone (CATz) was used in the first eye of the patient (study group) and the other eye of the same patient was operated on with conventional ablation (control group). Higher order aberrations [root-mean-square (RMS) in the 5-mm zone] of both groups were observed with the Nidek OPD-Scan aberrometer before and 3 months after LASIK. Preoperative mean refractive error was similar between two eyes of the same patient (t=?0.577, P>0.05). Results: Preoperatively, higher order aberrations (RMS in the 5-mm zone) in the CATz ablation and conventional groups were (0.3600±0.0341) μm and (0.2680±0.1421) μm, respectively. This difference was not statistically significant (t=1.292, P>0.05). Three months after LASIK, higher order aberrations (RMS in 5-mm zone) in the CATz ablation and conventional groups were (0.3627±0.1510) μm and (0.3991±0.1582) μm, respectively. No statistically significant difference was noted between pre- and postoperative higher order aberrations in the CATz group (t=?0.047, P>0.05). However, a statistically significant increase in higher order aberrations was observed after conventional ablation (t=?5.261, P<0.05). A statistically sig-nificant difference was noted in the increase of higher order aberrations after LASIK between groups (t=?2.050, P=0.045). Con-clusion: LASIK with conventional ablation and topography-guided CATz ablation resulted in the same BSCVA (best specta-cle-corrected visual acuity) 3 month after LASIK. Higher order aberrations were increased, but the increase of higher order ab-errations after customized ablation treatment was less than that after conventional ablation.     

求解水平线性互补问题的一渐近牛顿法

借助Fischer-Burmeister NCP函数将水平线性互补问题转化为带简单界约束的最优化问题,而后将一个修正渐近牛顿算法用来求解水平线性互补问题的,并给出数值实验,以说明算法是有效的。     

一种修正的WYL共轭梯度法及其全局收敛性

文章提出了一种用于求解无约束优化问题的修正的WYL共轭梯度法,该算法在不依赖任何线性搜索的情况能够始终产生充分下降方向.在适当的条件下,采取了Armijo线性搜索的该算法具有全局收敛性,最后,我们给出相应的数值结果说明该算法是有效的.     

有限个幺半群的强半格的平移壳

设半群A是有限个幺半群{Ae}的强半格,所有幺元e的集合为I（A）．为I（A）定义一种序关系,使I（A）成为带偏序关系的半群．利用这个偏序半群构造出一个新的半群B,然后证明B和A的平移壳同构,从而揭示了A的平移壳的结构．     

二项式函数f(x)=(1+x)α(α≠0)的幂级数展开式及其应用

详细介绍了二项式函数f(x)=(1+x)α(α≠0)的幂级数展开式、收敛域的确定及其二项式级数在数学中的应用.     

徐州方言倒装语序的语用考察

现代徐州方言的倒装语序可划分为主谓倒装、状中倒装、宾语前置、主语和状语同时后置、连谓结构成分顺序倒置等五种类型。从语用角度考察,徐州方言倒装语序的现状和特点与日常口语的表达、理解、特点和类型等关系密切。