基于信息比对的电力系统监控信息全面巡视工作研究

红外测温发现一起110 k V主变压器高压侧套管将军帽发热故障,介绍了故障的检查处理过程,并对发热故障的原因进行了分析,分析表明引线头固定座的销孔破裂是导致本次故障的直接原因。最后针对此类故障,对套管的生产、装配、日常维护以及过程监督等提出了整改措施。     

微波遥感监测土壤水分的研究初探

在GPS定位的基础上,同步测量土攘水分、土壤后向散射系数,和同步获取的X波段、HH机化SAR图像进行了土攘水分监N.]的徽波遥感试验研究。结果表明,X波段SAR图像的灰度与表层土壤(0~10cm)水分有较好的相关性,35OHH极化的土峨后向散射系数与SAR图像灰度和土攘水分也有较好的相关性,由SAR图像及土攘的后向散射系数估算的土峨水分精度相近,相对误差均为12%左右,因而利用X波段、HH极化的机载SAR图像监浏土壤水分是可行的。雷达图像的穿透力一般在10cm以内,因此探讨了由表层土壤水分推求剖面土壤水分的可能性,并提出以土攘水分计法在浏童精度和速度上改进传统土壤水分测量的方法。     

基于BP模型的KAD网络核心节点识别算法研究

针对在KAD网络中核心节点的识别问题,提出了一种基于BP模型对节点重要程度进行实时判定的方法。结合KAD网络测量的结果,对网络中核心节点的属性特征进行提取和归一化处理,获得了一组可分离度较高特征集合。采用MatLab设计相应的学习算法对BP网络进行训练,使结果收敛于预定误差区间。将完成训练的BP网络模型应用于对测试节点的判定,实验结果表明该方法可以实时地完成核心节点的判定,并且识别准确率可达到约70%。     

超声波作用下动态闪蒸制备冰浆

本文基于闪蒸理论,设计了一套超声波作用下动态闪蒸制备冰浆的实验装置。研究同一真空度下不同超声波功率、喷射体积流量及不同质量浓度的乙醇添加对冰浆真空动态闪蒸特性的影响。结果表明:与无超声波作用相比,超声波对增大水的闪蒸强度作用明显;体积流量一定时,降温降压速率随超声波功率的增大而增大,较高的超声功率有助于增强水的闪蒸强度,有利于动态制冰;而同一超声功率下随着体积流量的增大最终平衡压力也越高。较大体积流量不利于闪蒸的持续进行;乙醇添加剂能促进溶液降温,质量浓度越高,温度降得越低;质量浓度为5%时,可消除溶液过冷度,更利于产生冰晶。     

Determination of mechanical parameters for jointed rock masses

Combining with empirical method, laboratory test and numerical simulation, a comprehensive system was presented to determine the mechanical parameters of jointed rock masses. The system has the following four functions: (1) Based on the field investigation of joints, the system can consider rock mass structures, by using network simulation technology. (2) Rock samples are conducted by numerical simulation with the input engineering mechanical parameters of rocks and joints obtained from laboratory tests. (3) The whole stress-strain curve of jointed rock masses under certain normal stress can be plotted from numerical simulation, and then the shear strength parameters of jointed rock masses can be obtained from the whole stress-strain curves under different normal stresses. (4) The statistical values of mechanical parameters of jointed rock masses can be determined according to numerical simulation. Based on the statistical values, combining with engineering experiences and geological investigations, the comprehensive mechanical parameters of jointed rock masses can be achieved finally. Several cases are presented to prove the engineering feasibility and suitability of this system.     

基于深度CNN模型的SAR图像有源干扰类型识别方法

合成孔径雷达(SAR)能够全天时全天候获取感兴趣区域的高分辨率雷达图像,在诸多领域获得了成功应用。在电子对抗博弈环境下,SAR图像解译与情报生成也面临复杂电磁干扰的严重影响。当前,国内外学者提出了许多SAR抗干扰技术方法。然而,作为抗干扰的前提,SAR图像干扰类型识别这一关键技术却鲜有报道。该文针对SAR图像典型有源干扰类型识别开展研究。首先,选取5种典型有源干扰样式,并根据干扰参数,细分为9种干扰类型,作为干扰识别对象。其次,开展干扰信号回波仿真,通过与MiniSAR实测数据进行回波域叠加和成像处理,构建了典型有源干扰类型样本集。在此基础上,提出了一种结合注意力机制的深度卷积神经网络(CNN)模型,并开展了对比实验验证。实验表明,对不同场景和不同干扰参数情形,相比于传统深度CNN模型,该文方法取得了更高的识别精度和更稳健的性能。      

Oxidation behavior of non-stoichiometric (Zr,Hf,Ti)Cx carbide solid solution powders in air

Multi-component solid solutions with non-stoichiometric compositions are characteristics of ultra-high temperature carbides as promising materials for hypersoni...     

基于分级需求的乡村厕所建造技术

为满足农民差异化的改厕需求,通过对乡村厕所建造进行分级,按房屋建设指数由低到高,将乡村厕所建造划分为基础类、完善类、提升类,细化了乡村厕所建造模式与分级方案的对应关系.从厕所要素、厕所设施两方面,明确了不同类型厕所的设计参数与具体措施,为不同等级的乡村厕所建造提供借鉴.在物价调研的前提下,结合乡村厕所分级建造方法,细化出不同等级需求的乡村厕所建造典型方案,结合不同设施市场价格,对乡村厕所建造成本进行了测算,基础类、完善类、提升类厕所造价分别为638～1389、2438～4628、6274～14115元,为差异化的乡村厕所建设需求提供参考.     

横山水库水质历史演变特征及其水文影响因素

为了解横山水库水质的变化情况,以横山水库1995-2020年长系列水文及水质监测资料为基础,分析其TP、NH3-N、CODMn、Chl-a等主要水质指标的变化趋势,以及水位、库容及年均降水量对TP变化趋势的影响.     

Makeup Extraction of 3D Representation via Illumination-Aware Image Decomposition

Facial makeup enriches the beauty of not only real humans but also virtual characters; therefore, makeup for 3D facial models is highly in demand in productions. However, painting directly on 3D faces and capturing real-world makeup are costly, and extracting makeup from 2D images often struggles with shading effects and occlusions. This paper presents the first method for extracting makeup for 3D facial models from a single makeup portrait. Our method consists of the following three steps. First, we exploit the strong prior of 3D morphable models via regression-based inverse rendering to extract coarse materials such as geometry and diffuse/specular albedos that are represented in the UV space. Second, we refine the coarse materials, which may have missing pixels due to occlusions. We apply inpainting and optimization. Finally, we extract the bare skin, makeup, and an alpha matte from the diffuse albedo. Our method offers various applications for not only 3D facial models but also 2D portrait images. The extracted makeup is well-aligned in the UV space, from which we build a large-scale makeup dataset and a parametric makeup model for 3D faces. Our disentangled materials also yield robust makeup transfer and illumination-aware makeup interpolation/removal without a reference image.