一种快速自动检测海面目标算法

为实现海事动态视频监测中海面目标的自动检测,提出基于小波域视觉注意选择机制的海面目标快速检测算法。根据人类视觉观测特点,首先利用提升小波变换在小波域建立了双尺度视觉选择注意模型,然后在粗分辨率低频子带上分别利用相位谱法和梯度法建立视觉显著图,并对两者进行有效融合形成综合视觉显著图,最后通过小波反变换得到原始高分辨率图像的视觉显著图,并由此实现海面目标区域的提取。实验结果表明:该算法能够快速、准确地实现海面目标的自动检测,可用于基于海洋浮标的海事智能监测。     

Empirical Research on Carrying Capacity of Human Settlement System in Dalian City,Liaoning Province,China

Using the theories of population carrying capacity and ecological elasticity in other fields for reference, the connotation of regional human settlement system was defined from the viewpoint of the complex relationship among the factors such as regional population, resources, environment and economic and social development in the context of China′s rapid urbanization. Then the concept and characterization methods of the regional human settlement carrying capacity were proposed by means of population scale. Furthermore, a model of carrying capacity-pressure-state-response(CPSR) on regional human settlement system was established by referencing pressure-state-response(PSR) model, and the Catastrophe Theory was introduced to determine the corresponding standards of multi-criteria programming and evaluation. Taking Dalian City, Liaoning Province, China as an example, an empirical analysis on evaluation of human settlement system from 2000 to 2012 was carried out. The results showed that the carrying capacity of human settlement system in Dalian was fluctuating between 9.6 × 106 to 10 × 106 persons with a quantitative stage of the dynamic regulation. During the research period the load index of human settlement system in Dalian dropped from 0.96 to 0.84 with a lower pressure of human settlement system than the national average level. And the emergency response grades of human settlement system in Dalian were kept in grade Ⅱ(orange warning) or grade Ⅲ(yellow warning). Human settlement system of Dalian was in slight security state as a whole, but the load had a tendency of increase in recent years. The related departments should pay close attention to regional human settlement system and take active measures to improve human settlement by both intensity control and total quantity control. By comparison, analysis and discussion, it was considered that the results were basically accordded with the current situations of human settlement in Dalian, and the evaluation results were more reliable, visualized and easily applied in practice. Therefore, the above-mentioned concepts, characterization and evaluation methods of the regional human settlement system and carrying capacity could provide a new thought and method for quantitative evaluation of human settlement.     

基于反射地震数据的时频域包络反演

包络信号含有丰富的低频分量,即使在地震数据缺失低频条件下,包络目标函数也能有效缓解全波形反演的周期跳跃现象.但是,当初始速度模型较为平滑时,观测数据中的反射地震事件在模拟数据中没有与之相对应的波形,导致包络反演初期无法很好地利用反射波信号进行速度建模.本文提出基于反射地震数据的时频域包络反演方法,通过结合反射波全波形反演理论,构建反射波时频域包络目标函数,来提高包络反演的速度建模精度.本文首先利用Gabor变换获取时频域地震数据,并提取振幅信息,即为时频域包络信号.然后,推导反射波时频域包络反演的伴随震源和梯度算子.Marmousi模型数据测试结果表明,基于反射地震数据的时频域包络反演方法可以为全波形反演提供一个较好的初始速度模型.     

硫化铜镍矿浮选尾矿应用重-浮选联合流程的试验研究与生产实践

本文重点介绍了重选-浮选联合工艺对硫化镍浮选尾矿进一步处理,对其中有价金属回收的验研究与生产实践中所取得的技术成果,为资源的回收与利用上提供了一条有效的途径。     

Study of the Emplacement Mechanism of the Fenghuangshan Granite Pluton and Related Cu-Au Mineralization in Tongling, Anhui Province

The Fenghuangshan Pluton is located in the Tongling polymineral-cluster district in the middle-lower section of the Yangtze metallogenic belt. In tectonic terms, it is in the middle of the Guichi-Fanchang faulted fold bundle of the lower Yangtze Platform fold belt between the Dabie Orogenic Belt and the Jiangnan Massif. Analyses of the structural deformation characteristics of both the contact zone and the interior of the pluton are used to explain its emplacement mechanism. The foliation and lineation of the pluton, consisting of the oriented distribution of dark minerals and xenoliths, mainly concentrate along the margin of the pluton. Toward the center of the pluton, the foliation structure becomes weak, showing intense compression formation at the margin, and reflecting the conformable intrusion of the pluton. The relatively gentle lineation is evidence of a rotatory emplacement mechanism. Relatively steep marginal foliation reflects compression expanding. Affected by the thermal power of the pluton,     

柳林泉域滞流区低温岩溶热水的年龄分析

为了研究柳林泉域西部滞流区低温岩溶热水的年龄,在区域地质、水文地质条件调查及野外取样、分析的基础上,以滞流区横沟自流井的岩溶热水为例,利用δ2H（‰）、δ18O（‰）、3H（TU）和14C（pMC）同位素测年技术分析、计算并校核了该区岩溶水的滞留时间。通过分析岩溶水中3H和14C的关系及其δ2H、δ18O值,表明横沟岩溶水属于古岩溶水,其年龄应在10 000 a以上;利用14C计算并校核后的岩溶水年龄也印证了这一点,横沟1#和2#井岩溶水的14C年龄分别为12 908 a和9 090 a。因此,横沟附近岩溶热水应属于末次冰期盛冰期内补给的古岩溶水。      

基于神经网络方法的不确定非线性微分-代数子系统的鲁棒反推镇定控制

对于指数1且关联可测的不确定非线性微分-代数子系统,将反推方法和神经网络相结合,研究了其鲁棒渐近镇定控制问题.基于反推方法来构造镇定控制器,利用3层的神经网络来逼近每一步控制器构造过程中的不确定项.提出一种新的自适应算法对神经网络权值进行在线调节,并适当选取每一步虚拟控制器的参数,最终得到的控制器使得闭环系统是渐近稳定的.     

普光105丛式井平台井身结构的设计与应用

分析了丛式井在解决普光气田地质不确定、地表环境复杂等问题方面的技术优势。在对普光气田井身结构必封点分析的基础上,确定了各层套管下深范围,以此为据,优化出适用于普光气田水平井的2套井身结构方案。以普光105丛式井平台为例,分别对普光105-1水平井和普光105-2井的井身结构进行了优化设计,并对其钻井施工效果进行了总结与分析。应用实践证明,丛式井有助于缩短该地区的钻井周期、降低复杂失效、提高钻井速度,具有较为广阔的应用前景。     

地质统计学反演在四川盆地L地区储层预测中的应用

地质统计学反演基于地质统计学方法,综合利用地震、测井数据和地质认识,对储层的空间分布特征进行模拟,预测储层分布规律。通过四川盆地L地区气田开发实践,总结出以地质统计学反演为核心,且适用于四川盆地须家河组非均质构造～岩性复合式气藏的反演路线,在叠后约束稀疏脉冲确定性反演的基础上,由阻抗数据作为约束条件进行储层参数随机模拟,进而进行有利储层预测。结果表明,该方法具有测井数据的垂向分辨率高和地震数据的横向分辨率高的优势,对于识别非均质砂泥岩薄互型储层效果较好。     

交口县岩溶地下水资源量估算

在综合考虑岩溶水存储条件及水动力条件的基础上,对山西省交口县的岩溶地下水资源进行了合理的分区,根据岩溶水分布特征及其地质、水文地质、水动力等条件,交口县裂隙岩溶水分布为郭庄泉岩溶水区和十字崖岩溶水区,并在分区的基础上对岩溶地下水资源量进行了估算,交口县岩溶地下水资源量为8 878.5万m^3/a。