自适应全搜索比特面匹配算法的分析与改进

分析了Feng等提出的简单自适应全搜索比特面匹配运动估计算法的不足，对其中比特面的计算方法、搜索起点的选择及比特面匹配准则搜索失败后的处理策略等方面作了改进，实验结果表明，改进后的算法的运动估计性能比原算法有较大提高，对于可视电话中的头肩视频序列，性能与全搜索法差别不大，且计算量仅为全搜索法的1／6。     

内燃机缸盖气门座圈孔、导管孔复合铰刀的设计

同轴度是影响内燃机气缸盖、气门与座圈工作性能的关键技术要求。本文提出以镗铰工艺取代传统的扩铰工艺来进行导管孔和座圈孔的精加工 ,改进了复合铰刀的结构 ,主轴采用内滚结构 ,从而提高了刀具的刚性及可靠性 ,并保证了零件加工精度的要求。     

语音识别技术探讨

介绍了语音识别技术ASR的发展历史、目前研究方法、技术手段及当前取得的成绩与不足,提出一种新的的研究理论——利用基因算法训练HMM方法.     

研究实践精炼课堂

教育教学是学校的中心工作,教学研究是提高教学质量的重要保证,没有深入实际的教学研究就不会有精湛的课堂教学,因此,本校通过"深入实际、调查分析、确定方向、实践探索"的研究模式,引领教师在研究中教学,在教学中研究,自觉走研究之路,促进教师的专业化发展,提高课堂教学效益.     

The stress response factor RpoS is required for the natural transformation of Escherichia coli

The natural transformation of Escherichia coli is a novel and recently developed system that has significance for genetic studies and the biological safety of genetic engineering. However, the mechanisms of transformation, including development of competence and DNA uptake, are not thoroughly understood. In this study, we demonstrated the effect of the general stress response regulator RpoS, which has been associated with E. coli transformation, on natural transformation performed in an “open system”. We find that RpoS is required for natural transformation but not to artificial transformation and RpoS mainly affect transformation in the liquid culture prior to plating. In the liquid culture, RpoS over-expression promotes natural transformation in early exponential phase and static incubation accumulates RpoS and promotes transformation to a limited extent. These findings provide detailed understanding of RpoS function on natural transformation.     

The generalized partial transposition criterion for infinite-dimensional quantum systems

The positive partial transposition(PPT)criterion and the realignment criterion constitute two of the most important criteria for detecting entanglement.The generalized partial transposition(GPT)criterion which contains the PPT criterion and the realignment criterion as special cases,provides a necessary condition for a multipartite state to be separable.Here we extend the GPT criterion to the infinitedimensional multipartite(bipartite)case and show that it includes multipartite(bipartite)PPT criterion and multipartite(bipartite)realignment criterion as special cases as well.     

The tectonic uplift of the Hua Shan in the Cenozoic

Six granite samples were collected from six difference elevation locations at the Hua Shan in a main ridge of the Qinling Mountain. Apatite and zircon separated from these six samples were dated by the fission track technique. An assessment of the Cenozoic uplift or exhumation rate was obtained from the altitude difference of sampling samples dated by fission track, and from the difference of fission track dates of both apatite and zircon for a sample. The preliminary results suggest that the beginning of uplift of the Hua Shan was as early as 68.2 MaBP and the uplift rates for different periods are 0.02–0.19 mm/a (from the elevation difference) or 0.12–0.16 mm/a (from two mineral fission track dates). The average uplift rate is 0.12 mm/a (from the elevation difference) or 0.14 mm/a (from two mineral fission track dates). The uplift of the Hua Shan might accelerate since (17.8±2.0) MaBP, and the average uplift rate is about 0.19 mm/a.     

初始冲刷效应在农村雨水利用中的应用

通过理论分析暴雨径流初始冲刷效应的影响因素,提出在农村雨水利用中,通过控制集雨面的制作、加强集雨面的维护等措施,强化初始冲刷效应,以少量的初期雨水携带大部分的污染物,从而改善后蓄雨水水质。     

昆明酒店式公寓开发现状与对策研究

酒店式公寓以其＂酒店式的服务,公寓式的选择＂这一特质逐渐成为大众的选择、商家的投资热点。昆明酒店式公寓开发面临较好的机遇与选择,科学制定其开发策略,能有效提升昆明的品牌形象,促进其跨越式发展。     

以生为本理念下高校和谐师生关系的构建

面对不断出现的高校师生关系的错位,在科学发展观的指导下,以生为本构建和谐师生关系是当今高校必须面对的一个问题.师生关系的主体实现了和谐,师生关系实现的途径是和谐的,校园环境是和谐的,生本理念下高校和谐师生关系也就能成功地构建起来.