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.     

带核的装箱问题

本文研究带核的装箱问题，提出了一个近似算法──RFFD算法，给出了界的估计：对任何实的L，均有RFFD     

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。     

RSTC不变矩图像特征点匹配新方法

针对图像特征点的匹配中单纯依靠灰度度量会出现多峰值以及匹配不可靠、不准确的问题,提出了一种新的基于RSTC不变矩的匹配方法.该方法首先用改进的SUSAN算法找到角点,然后构造一种新的RSTC不变矩来描述角点特征,并用RSTC不变特征量作为匹配相似度的度量,再结合RANSAC鲁棒估计以及外极线约束进行引导匹配.对实际图像的实验表明,该方法可以获得比较好的匹配结果,消除了野值匹配所导致的长线条,并且精度比灰度匹配方法提高了6%以上.     

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.     

铁路系统的模型检查和参数分析

研究铁路系统的自动验证技术，建立火车和控制器的混合自动机模型，用时态逻辑ＩＣＴＬ描述铁路系统的性质规范，使用模型检查技术自动验证铁路系统，并且对铁路系统的一些参数进行分析。     

芥蓝(Brassica alboglabra Bailey)组培苗遗传稳定性的研究

对芥蓝（BrassicaalboglabraBailey）组培苗后代从个体形态特征、染色体数目、过氧化物酶同工酶进行分析研究，结果表明：组培第一代苗在外部形态上、产籽量等方面基本保持了原母株特征，染色体数目和过氧化物酶同工酶酶谱也与原母株相一致.