集值向量优化问题超有效点的广义鞍点刻画

目的研究局部凸空间中集值优化超有效解与鞍点之间的关系问题。方法通过广义鞍点的性质并结合择一定理,得到有关充分条件和必要条件。结果得到广义鞍点的一个锥分离性质,并且建立了近似锥-次类凸集值向量优化问题超有效解为广义鞍点的条件。结论其结果深化和丰富了最优化理论的内容。     

延迟受限细粒度可伸缩视频流媒体平滑传输

在异构网络上可伸缩视频传输中,为了解决由于网络的时变性特征所引起的编码码流与网络带宽不适配所引起的问题,该文提出了一种控制可伸缩码流的传输,使之适应带宽的时变特性,同时能够保证平滑的重建视频质量的传输调度算法。该文在延迟受限的条件下,通过控制每一帧增强层码流的传输,使得带宽变化所带来的视频质量波动显著下降,从而有效地提高了视频的总体质量。仿真试验表明,该方案在提高视频客观质量的同时提高了其主观质量,有效提高了视频传输的鲁棒性。同时,该文所提出的算法复杂度较低,能够应用在实际的流媒体传输系统中。     

保险诈骗罪若干问题研究

保险诈骗完全有可能由除投保人、被保险人和受益人外的一般自然人主体实施,我国现行刑法规定的保险诈骗罪的自然人主体范围过窄,应当进一步扩大。在罪刑设计方面,刑法第198条第2款关于数罪并罚的规定应当删除;罚金刑的设置不能充分体现罪刑相当原则,可考虑采取以比例罚金制为基础的日额罚金制。     

Fine mapping of the dominant glandless Gene Gl2^e in Sea-island cotton （Gossypium barbadense L.）

Gle2 is a mutant gene that controls glandless trait in cotton plants and seeds. It is an important gene resource to gossypol-free cottonseed breeding. The objective of this research was to develop SSR markers tightly linked with Gle2 by using the F2 segregating population containing 1599 plants derived from the cross of G. hirsutum genetic standard line TM-1 and G. barbadense glandless mutant line Hai-1. Genetic analysis suggested that the Gle2 was an incomplete dominant gene. Based on the backbone of genetic linkage map from G. hirsutum × G. barbadense BC1 published by our laboratory,Gle2 was lo-cated between CIR362 and NAU2251b,NAU3860b,STV033,with a genetic distance 9.27 and 0.96 cM,respectively. This result is useful for cloning Gle2 gene by map-based cloning method.     

运动气泡近界面上颗粒速度分布的理论分析和实验测量

利用边界层理论和近似分析方法,从流体在界面上的边界层分离问题入手,推导了非定常流动情况下运动气泡近界面附近颗粒的速度分布,其与由数字相关图象处理技术进行的颗粒成像测速所得的实验测量结果比较吻合。     

Improved generalized cell mapping for global analysis of dynamical systems

Three main parts of generalized cell mapping are improved for global analysis.A simple method,which is not based on the theory of digraphs,is presented to locate complete self-cycling sets that correspond to attractors and unstable invariant sets involving saddle,unstable periodic orbit and chaotic saddle.Refinement for complete self-cycling sets is developed to locate attractors and unstable invariant sets with high degree of accuracy,which can start with a coarse cell structure.A nonuniformly interior-and...     

Aromatase and steroid sulfatase mRNA expression in fine needle aspirates from benign and malignant breast disorders

The fine needle aspiration (FNA) test is a convenient and tolerable technique with minimal invasion that is accepted by most women.Local estrogen synthesis depends mainly on the aromatase and steroid sulfatase pathways that are believed to play important roles in breast carcinogenesis.However,little is known about the level of aromatase and steroid sulfatase mRNA expression in FNA samples which contain only small amounts of tissue.The nested Q-PCR assay has been proven to be a highly sensitive and specific method to assess the aromatase expression of breast tissue.In this study,aromatase and steroid sulfatase mRNA expression in 74 patients with benign or malignant disorders was evaluated and compared using nested Q-PCR and non-nested Q-PCR assays.The expression levels were analyzed and correlated with clinical parameters.No difference in the aromatase expression levels between nested and non-nested Q-PCR was noticed.Age and aromatase mRNA expression level were two independent risk factors for breast cancer (P=0.04 and P=0.00,respectively),while menopausal status and steroid sulfatase mRNA expression levels were not associated with breast cancer.This study showed that both nested and non-nested Q-PCR assays were effective methods for research using FNA breast samples.     

煤炭的精细加工利用在西部大开发中的战略地位

提出了煤炭精细加工利用概念 ,并结合煤的结构特征 ,讨论了西部大开发中煤炭精细加工利用的新技术领域及其战略地位     

一类二次系统存在双细鞍点的充要条件

本文利用二次系统初等奇点的性质及等倾线图，给出一类二次系统存在双细鞍点的充要条件，并对某些复杂的系数条件作出数值例子     

推行煤炭企业精细化管理 深化创建本质安全型矿井

精细化管理是一种先进的管理文化和管理方式,是企业适应激烈竞争环境的必然选择。结合同煤集团煤峪口矿精细化管理的实践经验,探讨了煤炭企业如何推行精细化管理。