查询词典 index

In our study of data compression, an entire research is given to the problem of the index of lattice points in pyramidal lattice vector quantization ,and index algorithms are presented to index the Iattce points of some usually-used lattices,such as ZL, DL, E8 and A16so on.

我们在数据压缩课题研究中，对塔式网格矢量量化中格点的标号进行了探索，给出了常用的几种网络诸如ZL、DL、E8、A16等格点的标号算法。

Using the DG index to measure the diversity of soil invertebrate assemblages was more reasonable than Shannon-Wiener Diversity Index in this case because the Acarina predominated in the samples which covered up the information of other soil invertebrate taxa, while the DG index is proposed on base of the hypothesis that every species has equal independence and importance in the community and could be compared with inter-community.

在本研究中，应用密度类群指数分析土壤无脊椎动物多样性的结果比应用Shannon-Wiener多样性指数的结果更为理想，这是因为土壤无脊椎动物由于组成结构复杂，不同类群的个体数量往往存在着巨大的差异，例如蜱螨目的较大数量常掩盖了其它类群的重要信息，多样性指数不能体现这一情况，而密度类群指数是基于各物种在群落中都有同等独立性，宜在不同群落间进行同种类比较的假设，对于复杂的土壤节肢动物群落多样性的测定可获得比较贴切的结果。

Based on data collected at four stations in Daning River in the spring of 2004 and 2005, phytoplankton community structure, vertical distribution, abundance, biomass, C contents, diversity index, richness index and evenness index were studied. The causes of eutrophication and water blooms in Daning River were analysed and control measures were then put forward. The dominant species were Asterionella Formosa, Cryptomonas ovata, Cyclotella caspia, Stephanodiscus neoastraea in the spring of 2004 and those were Pandorina morum, Eudorina elegans, Cyclotella caspia, Cryptomonas ovata in the spring of 2005. Average cell densities, biomass, C contents in the spring of 2004 and 2005 were 171.1×10^5 cells/L, 12.2 mg/L, 1732.2g C/L and 113.1×10^5 cells/L, 10.1 mg/L, 1395.9g C/L, respectively.

报道了大宁河2004年春季和2005年春季浮游藻类的种类组成、垂直分布、数量、生物量以及C含量的调查结果，并应用多样性指数、丰富度指数和均匀性指数对其水质进行了综合评价；对大宁河蓄水后出现的富营养化现象和春季发生&水华&的原因进行了探讨，同时提出了控制水体富营养化的建议。2004年春季，藻类优势种为美丽星杆藻、卵形隐藻、里海小环藻和新星形冠盘藻；2005年春季的优势种为实球藻、空球藻、里海小环藻和卵形隐藻。2004年和2005年的细胞密度、生物量和C含量分别平均为171.1×10^5 cells/L，12.2 mg/L，1732.2g C/L和113.1×10^5 cells/L，10.1 mg/L，

Based on Oracle, TOS in place with Minimum Bounding Rectangle were stored and become attribute that the surface feature is collected by way of its Spatial in the paper. For adopting R-Tree that Oracle Spatial offers and set up the index and collect index on the space position to the TOS, this kind of method is simpler in design, and its index result is belter.

基于Oracle，本文将地物集的包络矩形以其Spatial的方式存储成为地物集的属性，并采用Oracle Spatial提供的R树索引对地物集进行空间位置上的索引，这种方法设计比较简单，并且其索引效果也比较好。

The species diversity of Dipentodon sinicus communities in Yushe National Forest Park of Guizhou province was studied based on the quadrate method. The results showed that Rosaceae, Ericaceae, Betulaceae, Fagaceae, Theaceae, Lauraceae, Caprifoliaceae, Cornaceae were the dominant families in D. sinicus communities of Yushe National Forest Park. In the 10 sample plots, there were 8 which were absolutely dominated with D. sinicus population, the importance value came up to 135.69 on average, and it was far higher than the others. For D. sinicus communities, the abundance index (2.847), Simpson index (0.601), Shannon-Wiener index (1.523), probability of inter-specific encounter (0.601) and species evenness (0.569) of the tree layer were lower than those of the shrub layer (5.580, 0.830, 2.377, 0.829, 0.672, respectively) on the whole. It markedly showed a species diversity characteristic of the mixed broadleaved evergreen and deciduous forest in middle subtropics. In the 10 sample plots, the species diversity level of Q1 was the highest, followed by Q3, Q5 and Q6 was the lowest.

摘要运用样方法对贵州省玉舍国家级森林公园稀有保护植物十齿花群落的物种多样性进行了研究，结果表明：玉舍国家级森林公园十齿花群落以蔷薇科、杜鹃花科、壳斗科、桦木科、山茶科、樟科、忍冬科、山茱萸科等为优势科；10个样地中有8个样地以十齿花种群占绝对优势，其平均重要值高达135.69，远远高于其它种群；十齿花群落乔木层物种丰富度为2.847、Simpson指数为0.601、Shannon-Wiener指数为1.523、种间相遇机率为0.601、均匀度指数为0.569，总体上均小于灌木层(分别为：5.580、0.830、2.377、0.829、0.672)，表现为较明显的亚热带常绿落叶阔叶混交林的物种多样性特征。10个样地中，Q1的物种多样性程度最高，Q3次之，Q5和Q6最小，多样性程度最低，10个样地的物种多样性排序为Q1＞Q3＞Q9＞Q7＞Q2＞Q4＞Q10＞Q8＞Q5＞Q6。

In this thesis, we mainly study one of the topics in graph theory with applications: the extremal values of unicyclic graphs and unicyclic chemical graphs of the first general Zagreb index;the extremal values of bicyclic graphs of the second Zagreb index;the extremal values of unicyclic graphs of the general Randic index.

本论文主要研究了图论及其应用中的一个方面：图论在化学中的应用-单圈图以及化学单圈图的第一广义Zagreb指标的极值，双圈图的第二Zagreb指标的最小值以及单圈图的广义Randi指标在某个范围的最小值。

Shannon-Weiner index、 Simpson index and Species evenness index were 2.13, 0.85 and 0.81 of frigid grassland, which were 1.36, 0.65 and 0.65 of upland brushy grassland.

高寒草原Shannon-Weiner指数、Simpson多样性指数和均匀度指数分别为2.13、0.85和0.81，山地灌丛草原则最低只有1.36、0.65和0.65。

The results show, under the long-trem influence of different farming behaviors, the soil, collected from dry-land in low multiple crop index to dry-land in high multiple crop index to composite-land in high multiple crop index, decease in bult density, clay content, total P and activities of catalaes and increase in organic matter, humic acid contents, nitogen, available nitrogen, phosphorus, potassium, soi breathe intensity and urease, phosphatase, protease active content.

选择贵州中部喀斯特山区普定县猫洞小流域地区，通过长期受不同生产行为影响的区域（低复种旱作区、高复种旱作区、高复种复合农作区）的土壤采样分析，结果表明：喀斯特山区小流域土壤在长期不同生产行为影响下，从低复种指数旱作区、高复种指数旱作区到高复种指数复合农作区，土壤容重、粘粒含量减小，而土壤有机质、腐殖酸含量、全氮、碱解氮、速效磷、速效钾、土壤呼吸强度、脲酶、磷酸酶、蛋白酶活性含量依次增大，土壤全钾含量和过氧化氢酶活性却依次减小。

Now, the imposex status in females of Thais clavigera and Cantharus cecillei in 17 sites was investigated to evaluate the organotin contamination along Xiamen Bay during 2006 and 2007. The four indices including incidence of imposex, relative penis size index, vas deferens sequences index and sex ratio index were used comprehensively to assess the imposex status in order to ascertain the extent of organotin bioavailability in Xiamen Bay.

调查研究了厦门海域岩相海岸带疣荔枝螺和甲虫螺的性畸变情况，通过生物学指标IOI、RPSI、VDSI及SRI综合评价其性畸变发展程度，间接指示厦门周边海域的有机锡污染程度。

A total of 10 species of Chiroptera, belonging to 4 families and 6 genera, were recorded in the area, which takes 32.3% of the 31 Chiroptera species in whole Hainan Island. The Shannon-Weiner index is 2.734, Index of evenness is 0.823, and Simpson index is 0.817. The fauna characteristics was analyzed.

结果显示，马鞍岭火山口地区共有翼手目动物10种，隶属4科7属，占海南岛已知翼手目种类（31种）的32.3%，具有较高的翼手目物种多样性，其香农－维纳指数为2.734、均匀性指数为0.823、辛普森指数为0.817。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。