Laguerre-Voronoi图软件包的设计和实现

详细介绍了Laguerre-Voronoi图(L-V图)以及有关构造L-V图的一些计算几何概念：凸壳、下壳、下面、Laguerre-Delaunay图(L-D图)和Laguerre-Voronoi区域(L-V区域)。通过这些几何结构与L-V图之间的关系，设计了快速构造大规模二、三维L-V图的算法。通过在PC机(P4，2．0GHz)上对该算法进行性能分析，发现本程序构造二、三维L-V图的运行时间基本上和L-V区域的规模成线性关系，且即使在L-V区域的规模达到几十万时，构造L-V图的运行时间也可以控制在500s以内，在编写构造L-V图软件包时，选用结构体作为存储数据的数据类型，使得数据逻辑结构清晰，便于对数据的再加工和分析。最后，通过与RCP结合，还可用L-V图来解决空间划分问题。     

智能装配系统中神经视觉的三维物体识别

根据智能装配系统的实际要求，提出了一种利用神经视觉进行三维物体识别的理论和方法，在利用立体象对重建物体的三维外形的基础上，建立物体的区域图，利用物体的三维矩及其不变性来构造代表物体的特征矢量．采用ＡＲＴ２神经网络构成神经网络分类器，把物体的特征矢量作为神经网络分类器的输入，从而对物体进行识别或分类．这种识别或分类方法可以在线学习，能满足智能装配环境下连续作业的要求     

城市声景观表述方法的研究

提出了声景观图的概念，用来作为城市声景观的表述方法．声景观图由客观信息、主观信息、关系分析以及模拟信息等组成．同时，文中还提出了开发声景观图的方法，包括信息收集、数据处理、制图、分析和模拟等过程．然后以日本佐贺市作为案例制作和分析了该区域的声景观图．最后分析了声景观图的应用方法和前景．文中提出的声景观图是表述和分析城市声景观的有效方法．     

基于加权Voronoi图的城市经济区划分方法探讨

在分析目前划分城市经济区的方法的基础上，考虑到加权Voronoi图几何性质的独特性、在空间分割上的合理性以及计算机自动生成的可行性，试图将其应用于城市体系研究．通过深入分析城市断裂点理论的性质，并应用加权Voronoi图对其扩展，发现了包括传统断裂点在内的城市吸引范围的理论上的准确边界，提出了“断裂弧”的概念．通过构建两种不同形式的加权Voronoi图，提出了确定区域中心城市和划分城市经济区的新方法，并以河南省为例进行了实证分析．     

基于居民感知的乡村景观价值空间特征分析

【目的】从居民态度与价值认知分析乡村景观问题，为乡村景观适宜性评价和管理决策提供参考。【方法】以杭州市百丈镇为例，采用半封闭结构问卷、半结构访谈与参与式制图相结合的方法对468位居民进行乡村景观价值感知调查，采用SPSS相关性分析探索人口学特征变量和乡村景观价值的相关性，以及PPGIS识别8种乡村景观价值空间格局，并构建敏感度和相容度模型进一步揭示景观空间特征。【结果】(1)居民年龄、收入、受教育程度、职业、居住时间这5项人口学特征变量与部分乡村景观价值具有相关性；居民性别与乡村景观价值不具备相关性；(2)8种乡村景观价值在空间上呈斑状分布，主要围绕居住村落、文化价值高的景点以及活动集中区域向外扩散；(3)敏感度高值区为村庄聚落和生产区域，与景观资源分布、生产生活需求和环境心理因素相联系；(4)相容度分析识别出4种景观态度类型区域，受乡村景观价值空间分布和居民态度的影响。【结论】居民感知的景观价值在空间布局上与居民日常生活、生产活动密不可分，具有一定的规律性；区域内，正负向景观价值混合更替，也表明了多种价值空间复合对利用意愿竞争的指示作用具有复杂性；PPGIS可提供一种有效的途径，从居...     

电站锅炉墙结构振动模态参数识别

本文论述了识别电站锅炉墙结构固有频率与阻尼参数的方法．并对在上海石洞口发电厂２号锅炉上进行的测量及识别结果作了分析．     

基于Simulink的污水管网节点流量随机模拟器设计

为了合理评价污水管网的运行工况和服务性能，采用非平稳时序分析方法对其中节点人流序列进行了随机建模．首先，奇异点识别采用Tukey提出的方法，趋势项识别采用基于逐步回归分析的曲线拟合法，周期项识别采用累积周期图法．其次，平稳时序模型类型识别采用自相关图和偏相关图，阶数确定采用信息准则方法，参数估计采用最小二乘法．模型通过了残差检验和实用性检验．最后，根据随机建模结果在Matlab／Simulink上设计了污水管网节点流量随机模拟器的结构图，可实现污水管网节点人流序列的蒙特卡罗模拟，并在示波器窗口对模拟流量序列和原始流量序列进行了比较．     

基于非参数分析方法的上海—苏州巨型城市区域就业多中心空间结构研究

利用移动通信信令数据识别上海—苏州组成的巨型城市区域内通勤联系,应用非参数分析方法识别区域内就业中心,以此测度巨型城市区域的多中心结构。利用移动通信信令数据识别就业者工作地数据,得到整个区域内基于网格的就业密度分布。应用改进的非参数分析方法识别巨型城市区域内就业中心。第一阶段利用局部加权回归识别出候选就业中心;第二阶段识别围绕候选中心的高就业密度网格,与候选就业中心组成就业中心范围。最后,用内外交互指数和水平交互指数验证了该区域的功能多中心程度。研究发现,在通勤联系视角下,上海和苏州组成的巨型城市区域内存在20个有区域影响力的就业中心,已经形成了功能多中心结构。利用移动通信信令数据和非参数分析精确识别具有区域影响力的就业中心范围,避免了既往研究中行政单元对研究结果的影响,为准确认识上海—苏州巨型城市区域的空间结构提供了支持。     

基于出租车轨迹数据的交通异常识别算法

为了实现基于出租车轨迹数据的交通异常识别,首先以城市栅格地图模型为框架,提出了一种针对城市路网的多光谱分隔算法;并根据城市路网分别从区域增长与区域融合两种角度,实现了多光谱地图的分割。其次在分割的城市路网基础上,设计了交通异常的识别算法。算法依据单元区域内道路网络拓扑结构构建交通异常图;然后根据出租车路径选择模式的历史规律,计算每个单元区域内不同路径上的出租车轨迹流量的变化;最后根据三倍均方差指标识别单元区域内的交通异常。最后以哈尔滨为例,进行了算例分析。算例结果表明,提出的异常识别算法取得了良好的效果,验证了算法的有效性及准确性。     

基于出租车轨迹数据的交通异常识别算法研究

为了实现基于出租车轨迹数据的交通异常识别,本文首先以城市栅格地图模型为框架,提出了一种针对城市路网的多光谱分隔算法,并根据城市路网分别从区域增长与区域融合两种角度实现了多光谱地图的分割。其次在分割的城市路网基础上,设计了交通异常的识别算法。算法依据单元区域内道路网络拓扑结构构建交通异常图,然后根据出租车路径选择模式的历史规律计算每个单元区域内不同路径上的出租车轨迹流量的变化,最后根据三倍均方差指标识别单元区域内的交通异常。文章最后以哈尔滨为例进行了算例分析,算例结果表明,本文提出的异常识别算法取得了良好的效果,验证了算法的有效性及准确性。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.