基于MSM输入输出排队交换结构的调度算法研究

信息网络的传输宽带化和业务多样化需求给交换结构的可扩展性及性能提出了更高的要求.基于MSM(Memory-Space-Memory)输入输出排队交换结构进行研究,通过对交换网络内部拥塞调度机制进行深入分析,在保障调度公平性的基础上,提出一种严格匹配输出调度过程的SM-RR(Strict Matching algorithm based onRound-Robin)算法.与现有典型算法相比,该算法无需加速比即可获得较高的性能.     

一类二阶带阻尼项的不稳定型差分方程的振动性与非振动性

应用分类讨论方法和分析方法,讨论了一类广泛的二阶非线性差分方程解的振动性与非振动性,推广并改进了已有文献中的相关结果.     

抗肿瘤多酸药物[Mo7O24]6-的电子结构研究

运用第一原理密度泛涵理论中的离散变分方法（ＤＦＴ－ＤＶＭ）对具有抗肿瘤活性的多酸药物三合水七钼酸异丙基胺的阴离子「Ｍｏ７Ｏ２４」＾６－进行了电子结构，获得了键级、不等价原子的电子占据数、原子净电荷，分子轨道能级以及「Ｍｏ７Ｏ２４」＾６－的ＨＯＭＯ和ＬＵＭＯ组成等数据，并对该药物的活性和作用机理从电子结构的角度进行了讨论。     

Remark on the Strichartz estimates in the radial case

We prove up to an endpoint the full radial Strichartz estimates for the Schrödinger-type equation in the radial case. Our results improve the one obtained in Guo and Wang (2011) [2]. The main ingredient is that we exploit some orthogonality to overcome the logarithmic divergence.     

Synthesis of α-Selenoesters and α-Thiolesters via Sm/SbCl_3 System in Aqueous Media

SincethefirstBarbier-typereacti0ninaqueousmediainl977',organometallicreactionshaveattractedconsiderableattentioninorganicsynthesis'.lfonecanperformorganometallic-typereactionsinaque0usmediajustasgeneralIyandeasilyasin0rganicsoIvents,suchreactionsmay0fferconsiderableadvantagesf(l)Thereisthepracticalconvenienceofnothavingtohandleinflammableandanhydrousorganicsolvents.(2)Thetedioustaskofprotection-deprotectionchemistryforcertainfunctionalgroupsoftenenc0unteredin0rganicsynthesismaynotberequired.(…     

Convex hull-based multi-objective evolutionary computation for maximizing receiver operating characteristics performance

The receiver operating characteristics (ROC) analysis has gained increasing popularity for analyzing the performance of classifiers. In particular, maximizing the convex hull of a set of classifiers in the ROC space, namely ROCCH maximization, is becoming an increasingly important problem. In this work, a new convex hull-based evolutionary multi-objective algorithm named ETriCM is proposed for evolving neural networks with respect to ROCCH maximization. Specially, convex hull-based sorting with convex hull of individual minima (CH-CHIM-sorting) and extreme area extraction selection (EAE-selection) are proposed as a novel selection operator. Empirical studies on 7 high-dimensional and imbalanced datasets show that ETriCM outperforms various state-of-the-art algorithms including convex hull-based evolutionary multi-objective algorithm (CH-EMOA) and non-dominated sorting genetic algorithm II (NSGA-II).     

以PBL法进行药学实验基本技能教学的探索与实践*

根据西部少数民族地区院校的客观条件和教学特点,提出用以问题为导向的教学法(PBL)进行药学基本技能实验教学。实践证明,实验组(PBL法)的实践基本技能操作水平和发现、分析并解决问题的能力均显著高于对照组(传统教学法)。该法对提高西部少数民族地区药学本科生的创新能力具有较大意义,对其他地区药学本科生创新能力的培养也有一定的借鉴作用。     

Ultrafast photo-induced turning of magnetization and its relaxation dynamics in GaMnAs

We report that,by linearly polarized pumping of different wavelengths,Kerr transients appear at zero magnetic field only in the case when GaMnAs samples are initialized at 3 K by first applying a 0.8 Tesla field and then returning to zero field.We find that,instead of magnetization precession,the near-band gap excitation induces a coherent out-of-plane turning of magnetization,which shows very long relaxation dynamics with no precession.When photon energy increases,the peak value of the Kerr transient incre...     

自然循环过冷沸腾流动不稳定性的实验研究

本文以氟里昂作工质，对自然循环过冷沸腾流动不稳定性进行了实验研究．实验过程中发现自然循环系统内可能发生高频脉动和低频脉动二种类型的过冷沸腾流动不稳定性．通过实验研究揭示了这二种类型流动不稳定性的发生机理，证实高频脉动属于声波型脉动，低频脉动属于密度波型脉动．通过实验得出了判断系统稳定性的界限，并使用积分方程无因次分析方法得出了预测密度波型流动不稳定性的经验公式．