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主要生产微波、有线电视信号解扰器,有线电视解扰器可寻址加扰系统群加群解,群加单解,,CATV有线电视IC卡授权加扰系统群加单解,单加单解,单加群解,多相位序列控制。

During the postgenomics era the information about genomic sequence and gene functions provides a new foundation for evolutionary biology and ecology As the first whole-genome sequenced plant Arabidopsis thaliana and its wild relatives have played a critical role in understanding the evolution of genomics and speciation Both A halleri and A lyrata are closely related to the model species A thaliana A halleri ssp gemmifera occurs in northeastern China Japan and Taiwan; while its sister A halleri ssp halleri is mainly distributed in Europe Geographical barriers such as Tienshan Mountain Range isolate these intraspecific sisters Likewise A lyrata ssp kamchatica and ssp lyrata occur in East Asia and North America respectively Such distribution patterns seem to be consistent with allopartic speciation The comparison between ancestral and extant polymorphism by multilocus can be informative about the population genetics of speciation In this study we collected and analyzed DNA sequences of 98 genes from four wild relatives of A thaliana A halleri ssp gemmifera A halleri ssp halleri A lyrata ssp kamchatica and A lyrata ssp lyrata The ancestral states of these four species were compared to each other in terms of level of genetic variation However the ancestral species at the time of speciation were substantially more polymorphic than the extant geographical populations The observations are not fully compatible with speciation by strict allopatry At some species pairs parapatric speciation seems more reasonable in speciation of Arabidopsis The 98 gene sequences are also used for the congruence test between gene genealogy and species phylogeny Only 28 genes support the species phylogeny but there are 23 genes supports another major genealogy { lyrata} thaliana Based on the phylogenetic position change of A lyrata ssp kamchatica and Ks value for each species pair suggested the recent directional gene flow between A halleri ssp gemmifera and A lyrata ssp kamchatica

阿拉伯芥是第一个完成基因体定序的开花植物,其基因体资讯提供植物学研究的重要依据;在解析阿拉伯芥属物种的亲缘关系以及种化机制等重要的演化议题时,阿拉伯芥近缘的野生物种自然成了不可或缺的关键;跟阿拉伯芥近缘的物种包括A halleri及A lyrata,其中A halleri ssp gemmifera主要分布於中国东北、日本以及台湾,与近缘的A halleri ssp halleri其分布於欧洲隔著天山及大陆的障蔽,而A lyrata ssp kamchatica主要分布於东北亚及台湾,与分布於北美五大湖的A lyrata ssp lyrata被北极圈所分隔,这样的分布模式暗示异域种化的可能。藉由多基因分析比较祖先物种与现生物种遗传歧异度的相关可提供讯息探讨种化时期的族群遗传结构,本研究针对A halleri ssp gemmifera、A halleri ssp halleri及A lyrata ssp kamchatica、A lyrata ssp lyrata四个物种,两对互为亚种的姊妹群,以阿拉伯芥为外群进行研究,在四个物种完成98个同源基因的分子序列,利用套装软体MCMCcoal来估算祖先物种的遗传变异,亦估算现生物种的核苷酸歧异度,观察到?多物种配对中祖先物种遗传多型性大於现生物种DNA歧异度,显示异域种化模型并无法完全解释阿拉伯芥属物种的种化模式,在某些物种配对间邻域种化模式应比异域种化更为可能;在基因树与物种树的比较,98个基因片段的亲缘模式只有28个是与已知物种树一致的,有23个基因其树状图支持{ lyrata} thaliana的型式,藉由kamchatica位置的变化以及估算各物种配对间的平均同义置换率,推测在A halleri ssp gemmifera与A lyrata ssp kamchatica间具有近代的单方向基因交流。

The attention digs group of active character; inside not effervescent to diving for long, he did not discuss T; as group advocate, at one's leisure must go up more group in a little, discover what is good east east, share; with everybody for a short while group when Li Taian is static, do not have a thing to look for the; that select an issue group active, very old rate depends on group advocate.

注意挖掘群内的活跃人物;对于长时间潜水不冒泡的,T他没商量;做为群主,有空时一定要多上群里聊聊,发现什么好东东了,第一时间和大家分享一下;群里太安静时,就没事找点事;群活跃不活跃,很大程度取决于群主。

The average number of anterior lymph nodes was 3.83±1.79. Their blood supply originated from the branches of lateral thoracic artery, whose mean diameter and length were 1.04±0.42 and 29.5±12.25 respectively.(3) The average number of posterior lymph node was 2.38±0.97. Their blood supply originated from the lymph node branch of subscapular artery, whose length and mean diameter were respectively 18.78±8.67 and 0.78±0.32.(4) The average number of central lymph nodes was 4.05±1.95. Their blood supply originated from axillary artery whose mean diameter was less than 1mm.(5) The average number of apical lymph nodes was 2.82±1.96. Their blood supply originated from the branches of thoracoacromial artery whose mean diameter was 0.79±0.29mm and length was 10.60±4.13mm.

结果 外侧群淋巴结数量为(3.16±1.72)个,血供属多源性且不恒定;前群淋巴结数量为(3.83±1.79)个,营养血管主要为胸外侧动脉的分支,其外径(1.04±0.42)mm,干长(29.5±12.25)mm;后群淋巴结数量为(2.38±0.97)个,血管来源于肩胛下动脉的淋巴结支,其外径为(0.78±0.32)mm,干长(18.78±8.67)mm;中央群淋巴结数量为(4.05±1.95)个,血管来源于腋动脉的分支,其外径均在1mm以下,干长20mm以上;尖群淋巴结数量为(2.82±1.96)个,营养血管为胸肩峰动脉的分支,外径为(0.79±0.29)mm,干长(10.60±4.13)mm。

Firstly,the sampling design has great impact on the accuracy of remote sensing classification.There exists great randomicity on the result of points and cluster sample verification on the different Sampling design.On the same sampling design,the stability of point sample verification is higher than that of Cluster sample verification.Secondly,the average accuracy of different sampling designs of multi-point and multi-cluster sample verification can reflect the accuracy characteristic.During the course of point sample verification,stratified sampling's error is lower than others'.During the course of cluster sample verification,systematic sampling and stratified sampling's accuracy are prior to simple random sampling's.

研究结果表明:(1)抽样方式对遥感分类精度评价结果的影响是客观存在的,不同抽样方式下的点样本和群样本检验结果都存在一定的随机性,但同一种抽样方式下,点样本检验精度评估结果的波动幅度小于群样本检验,稳定性比群样本检验要好;(2)不同抽样方式下的多次点样本和群样本检验的平均精度检验结果基本上都能够反映分类图像的精度特征,其中,点样本检验中,分层随机抽样点样本检验效果较好;群样本检验中,系统抽样群样本检验和分层随机抽样群样本检验的效果优于简单随机抽样群样本检验。

A Multi-Species Cooperative PSO algorithm is developed using the ideas of species dividing in the bionomical world. The algorithm is shown to have guaranteed convergence to the global optimum. Furthermore, the training strategies of RBF network structures and weights based on the MCPSO aigorithm is proposed. Simulation results show that the algorithm is effective in such fields as chaotic time-sequence forecasting, system identification, speech signal processing and etc.

在分析基本微粒群算法和协同微粒群算法特点的基础上,借鉴生态学中的种群划分思想,设计出一种多种群协同进化微粒群算法,并分析了该算法的收敛性能;在分析径向基函数神经网络结构的基础上,提出了基于多种群协同进化微粒群算法的径向基函数神经网络结构和权值优化设计策略,并在混沌序列预测、系统辨识、语音信号处理等应用仿真实验中验证了算法的有效性。

Species identification researchThrough female\'s body wax glands of the Dactylopius confususthe scanning electron microscope research,the results showed that:Dactylopius confususfemale prosopon wax gland hole single or in groups,the forehead 25-30 crowd, each group has 4-6 approximately,the chest approximately 120-125 crowd,each crowd of 4-6,the abdomen approximately 200 crowds,each crowd reaches 30 approximately.

种类鉴定的研究通过对胭脂虫雌成虫虫体蜡腺的扫描电镜研究,结果表明:胭脂虫雌成虫蜡腺孔单个或成群,头部约25—30群,每群具有4—6孔,胸部约120—125群,每群约4—6孔,腹部约200群,每群多达30孔。

This paper studies the management model of multi-cluster , presumes two methods: user-decided and system-decided, and stabiles a MCJSS structure based on PBS.

研究多集群的管理模式,设计支持多集群的用户决策和系统决策两种调度方式,提出基于PBS的多集群作业调度MCJSS架构。

I am direct in QQ group in the search can be exhibited, next alternative affiliation is certain QQ group, besides group advocate with the administrator, I choose right company to be given out one by one invite the QQ that joins me group, usually each enterprise won't decline many promotion company or the channel of company product, but in early days your QQ group not tall still when invited successful rate is not high also, it is very irritated that such each single shot invite, but the effect still shows gradually come out.

我是直接在QQ群里搜索会展,然后选择性的加入某些QQ群,除了群主与管理员,我选择合适的企业一个一个发出邀请加入我的QQ群,一般情况下各企业不会拒绝多一个推广企业或者企业产品的渠道,但在前期你的QQ群还不高的时候邀请的成功率也不高,这样一个个的单发邀请是很烦,但效果还是逐渐显示出来。

Firstly, this algorithm maps a given routing instance to the corresponding graph model, which is a kind of asymmetric grid graph suitable for BBL mode.

在本文中,我们在本教研室原来研究的基础上,就物理设计中BBL模式下典型的多端线网绕障碍布线问题,提出了一种基于生物仿生特性的蚁群算法,通过选择适当的图模型表述,该算法可采用蚁群任务调度策略,模仿蚁群的协同学习机制,来求解多端线网绕障碍的布线问题,并能给出较优的解。

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