一类带有反应扩散项和非单调功能反应函数的食饵-捕食系统的Turing不稳定性

研究了带有反应扩散项和非单调功能反应函数的食饵-捕食系统,分析了系统的局部稳定性,并且推导出了系统空间齐次和非齐次常数平衡解Turing不稳定的精确的参数范围.应用数值模拟进一步说明了理论推导的正确性.     

探索生产实习新模式 培养电科专业高素质人才

生产实习是所有工科高校中培养理论联系实践的高素质人才的重要环节,而生产实习的模式将直接影响学生对理论知识的理解及其理论与实际相结合的认识.针对目前本专业在生产实习过程中存在问题的分析和对国内外多所高校实习模式的调研,详细地探讨了与本专业相关的生产实习模式及其改进的方法,除了需要进一步加强校外实习,还提出了校外实习与校内实习相结合、成立专职教师队伍、引入工程类"project"项目等改革方案,根据学生对专业理论知识掌握及自身兴趣的不同,提出了分层次、分类别实习的模式,由此进一步提高学生的工程实践能力,增强其创新意识.     

网络环境下高校大学生深度阅读策略

深度阅读是对处在当今信息化社会、快节奏生活方式的人们提出的一个很难贯彻落实到日常生活中的高要求。因为方便快捷的移动式和电子化阅读的普遍适用,在此网络环境的消极作用下,现在各大高校图书馆的纸质化阅读规模和借阅数量较之前有了很大的缩减,因此,对高校图书馆提出促进深度阅读工作开展的要求也是严格的。本文主要针对目前高校大学生阅读现状进行了分析和探讨,在此基础上提出了高校图书馆助力深度阅读的策略。     

强α-预不变凸函数

研究了一类重要的广义凸函数—强α-预不变凸函数,讨论了它与α-预不变凸函数、严格α-预不变凸函数及半严格α-预不变凸函数之间的关系,并在中间点的强α-预不变凸性下得到了它的3个重要的性质定理,同时给出了强α-预不变凸函数在优化中的两个重要应用,这些结果在一定程度上完善了对强α-预不变凸函数的研究。
     

Experimental determination of significant waveheight by OSMAR071: Comparison with results from buoy

OSMAR071 is the latest product of the OSMAR (ocean state monitor and analysis radar) series of high frequency surface wave radar (HFSWR), which was developed by the Radiowave Propagation Laboratory of Wuhan University. It adopts a modified Barrick waveheight inversion model. The modifications are introduced to improve the model’s performances under the effect of noises and interferences and in the case of broad beam radar detection. The two unknown coefficients in the modified model are figured out by fitting the HFSWR significant waveheight results to those output from a wave buoy located in the radiating coverage of the radar site. The model is applied to inverse the waveheights from radar data for the duration from Dec. 1st, 2008 to Feb. 25th, 2009, and then the radar waveheights are compared with the buoy measurements. Results show that the rms difference between radar-derived significant waveheights and those from the buoy is 0.38 m and the correlation coefficient between the two series is 0.66. This study describes OSMAR071 observation of significant waveheight with relatively satisfactory accuracy during about three months.     

CMOS折叠-插值A/D转换器中气泡效应的研究

ＣＭＯＳ折叠－插值Ａ／Ｄ转换器是一种新颖的高速，低功耗转换器，文中在芯片设计的基础上分析了这种转换器的结构在视频应用时潜在的气泡效应及其压缩消除技术，设计了采用气泡升降法的压缩电路及芯片，取得了较好的压缩效果。气泡铲应是高速Ａ／Ｄ中普遍存在的可靠性问题，文中同样为尽可能消除其它高速Ａ／Ｄ的气泡失效提供了适用的分析和对策。     

Research of improving the dynamic scheduling algorithm in the CAN bus control networks

Currently, the article analyzes the CAN bus＇s rule of priority＇s arbitration bit by bit without destroy. It elicits the conclusion that if static priority based on the affirmatory system model is used, the lower priority＇s messages will be delayed considerably more, even some data will be lost when the bus＇s bandwidth is widely used. The scheduling cannot be modified neither during the system when static priority is used. The dynamic priority promoting method and the math model of SQSA and SQMA are presented; it analyzes the model＇s rate of taking in and sending out in large quantities, the largest delay, the problems and solutions when using SQMA. In the end, it is confirmed that the method of improving dynamic priority has good performances on the network rate of taking in and sending out in large quantities, the average delay, and the rate of network usage by emulational experiments.     

毛细管气相色谱法分析烟叶中的低级脂肪酸

用毛细管气相色谱法分析了中国不同地区不同等级的烤烟烟叶中Ｃ１ —Ｃ８ 低级脂肪酸的含量，结果发现，质量好的烟叶比质量差的烟叶所含低级脂肪酸总量要高一些，一些脂肪酸能减少烟气的刺激性使烟气柔和。     

Antagonistic effect of 6-hydroxydopamine (6-OHDA) on generation of immunosuppressive protein of stress in the rat

Neonatal rats were injected with 6-hydroxydopamine (6-OHDA) for chemical sympathectomy. The rats were treated with restraint stress when they grew up to 56 d. It has-been found that the generation of immunosuppressive protein of stress (ISPS) is significantly reduced, suggesting that peripheral sympathetic nerve plays an important role in mediating the generation of ISPS.     

格值正则语言的逼近性质

文章主要在格半群L=[0,1]上研究了格值正则语言的逼近性质,从覆盖、拟正定等方面给出了格值正则语言可被正则语言逼近的充分或必要条件.