查询词典 spatial model

The spatial regeneration pattern of the Picea wolsonii was studied in the two plots of different disturbance intensity according to the spatial sampling method and design.

依据地统计理论和方法，采取小支撑多样点的空间取样设计，在干扰强度不同的两个华北落叶松林分中设置样地，对云杉更新幼苗的空间格局进行了定量比较研究。

Though a lot of effort has been devoted such as spatial guided clustering analysis and posteriors refinement with spatial constrained method,the weights of different feature space and complexity introduced by using other techniques are still waiting to be resolved.

尽管已经出现了许多改进的方法，如采用进行空间约束的聚类方法和使用其它保持空间紧致性的方法进行结果修正等，不过不同空间划分之间的协调、新的参数复杂性和算法复杂性反而使得聚类分析技术失去其简单有效的优势。

The index of average density spatial energy relative time-space cosmic energy follow the rise and fall of quantum spatial measurement, at original cosmic time-space set out, from 1 come to do not exceed 2, not smaller 4/3, come to do not symmetrically gradually belong to stabilization thus at reductively fluctuate, not can reversely strides across reach 3/2 that stable state maintain unchanging.

宇宙能量的相对时空空间的能量平均密度指数随宇称量子的涨与落，在原初的宇宙时空启动，从1成不大于2，不小于4/3，成不对称地递归于稳定而在缩小地波动，不可逆地跨越到3/2的稳定状态保持不变。

Secondly, on the basis of the analysis of the spatial-temporal feature of background and infrared targets in infrared sequence, a method for clutter suppression and noise removement based on the association of spatial self-adaptating Two Dimensional Least Mean Square background predict and temperal Higher-Order Cumulant is presented, and its improved version suitable for strong edge rejection and gaussian noise suppression is proposed.

然后针对红外图像序列中弱小目标和背景的空间和时间特性，提出了一种空域改进的自适应二维LMS背景预测和时域高阶累积量相结合的杂波抑制和滤波降噪的预处理方法，理论和实验结果表明，该方法对于抑制强起伏的红外背景杂波和去除高斯噪声的影响非常有效。

The spatial patterns of eggs, larvae and adults of Saperda Papulnea L. in three different types of poplar forests in Jinshatan forest centre, Datong Poplars Institute were studied by using geostatistics tools. Geostatistics allows the usage of quantity and location information simultaneously to qualify the spatial pattern of insect population.

根据在大同杨树局所属金沙滩林场3块不同类型样地上收集到的青杨天牛卵、幼虫和成虫的数量和位置资料，应用地统计学方法对其种群的空间格局进行了研究。

Temporal and spatialcorrelation of Soil moisture under vertical direction was affected by some factor such asmeteorology, land use and fertilization measures. All siol moisture in different layers hastemporal and spatial correlation when soil moisture fluctuates of surface layer becausestability, but influence ability of each factor is not the same. For example, meteorologyhas most strong impact on temporal and spatial correlation of soil water content.

在气象条件较稳定的情况下，不同植被覆盖和不同施肥措施下各土层含水量之间都具有较强的时空相关性，随着气象条件波动加剧，各土层土壤含水量的时间相关性和空间相关性都降低；植被因素相对气象条件对各土层含水量的时间自相关性影响较小，而对各土层土壤含水量之间的空间相关性影响较大，裸地和农田各土层土壤含水量之间的空间相关性相对林地和草地较弱；不同的施肥水平都削弱了土壤各土层含水量的时空相关性。

The temporal and spatial niche breadth value of Propylaea japonica was maximum, and the temporal niche overlap value of Theridion octomaculatum between dominant predatory enemies and Aphis gossypii was maximum and the spatial niche overlap of Pardosa T-insignita was maximum.

对淮北棉田节肢动物优势种群组成和时空生态位进行分析，结果表明：棉蚜、烟粉虱、棉叶螨、棉盲蝽、四点亮腹蛛、龟纹瓢虫、T-纹豹蛛、草间小黑蛛、八斑球腹蛛、华姬猎蝽、小花蝽和青翅隐翅虫为优势种群；时间和空间生态位宽度值都是以龟纹瓢虫最大，捕食性天敌优势种群与棉蚜时间生态位重叠值以八斑球腹蛛最大，空间生态位重叠值以T-纹豹蛛最大。

The precision of spatial data, the validity and intagrality of the attribute data and the topo relation of spatial data are the main factors that affect the quality of space database.

空间数据的精度，属性数据的正确性与完整性，空间数据拓扑关系的正确性是影响空间数据库质量的主要因素。

The spatial topologic relation is the foundation of spatial syntactic research.

空间拓扑关系是空间句法研究的基础。

Integrated reasoning of spatial topologic relation and directional relation and spatial relation information's acquiring for map objects.

空间拓扑关系和空间方向关系的集成推理和地图目标空间关系提取。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。