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Geo-Spatial Information Science 2018年第1期21卷 45-55页

作者： xinping deng Jinsong Chen Hongzhong Li Pengpeng Han Wen Yang Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhenChina Signal Processing Lab School of Electronic InformationWuhan UniversityWuhanChina

Since its first flight in 2007,the UAVSAR instrument of NASA has acquired a large number of fully Polarimetric SAR(PolSAR)data in very high spatial *** is possible to observe small spatial features in this type of data,offering the opportunity to explore structures in the *** general,the structured scenes would present multimodal or spiky *** finite mixture model has great advantages in modeling data with irregular *** this paper,a type of important statistics called log-cumulants,which could be used to design parameter estimator or goodness-of-fit tests,are derived for the finite mixture *** are compared with logcumulants of the texture *** results are adopted to UAVSAR data analysis to determine which model is better for different land types.

关键词： Finite mixture model UAVSAR log-cumulant statistical analysis Polarimetric SAR(PolSAR)

Effect of deformation parameters on the austenite dynamic recrystallization behavior of a eutectoid pearlite rail steel

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 833-841页

作者： Haibo Feng Shaohua Li Kexiao Wang Junheng Gao Shuize Wang Haitao Zhao Zhenyu Han Yong deng Yuhe Huang xinping Ma Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Institute for Steel Sustainable Technology Liaoning Academy of MaterialsShenyang 110004China Pangang Group Panzhihua Iron and Steel Research Institute Co.Ltd. Panzhihua 617000China

Understandings of the effect of hot deformation parameters close to the practical production line on grain refinement are crucial for enhancing both the strength and toughness of future rail *** this work,the austenite dynamic recrystallization(DRX)behaviors of a eutectoid pearlite rail steel were studied using a thermo-mechanical simulator with hot deformation parameters frequently employed in rail production *** single-pass hot deformation results reveal that the prior austenite grain sizes(PAGSs)for samples with different deformation reductions decrease initially with an increase in deformation ***,once the deformation temperature is beyond a certain threshold,the PAGSs start to *** can be attributed to the rise in DRX volume fraction and the increase of DRX grain with deformation temperature,***-pass hot deformation results show that the accumulated strain generated in the first and second deformation passes can increase the extent of *** the case of complete DRX,PAGS is predominantly determined by the deformation temperature of the final *** suggests a strategic approach during industrial production where part of the deformation reduction in low temperature range can be shifted to the medium temperature range to release rolling mill loads.

关键词： eutectoid pearlite rail steel prior austenite grain size dynamic recrystallization single-pass hot deformation three-pass hot deformation

Greenhouse gas emissions mitigation and economic viability of sugar crops in China

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Frontiers of Agricultural Science and Engineering 2024年第3期11卷 397-408页

作者： Linsheng YANG Xiaozhong WANG Wushuai ZHANG Prakash LAKSHMANAN Yan deng Xiaojun SHI xinping CHEN Fusuo ZHANG Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin College of Resources and Environment Southwest University Key Laboratory of Low-carbon Green Agriculture in Southwestern China (Ministry of Agriculture and Rural Affairs) Southwest University Rice Research Institute Anhui Academy of Agricultural Sciences Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi) Ministry of Agriculture and Rural Affairs Guangxi Key Laboratory of Sugarcane Genetic Improvement Guangxi Academy of Agricultural SciencesSugarcane Research Institute Guangxi Academy of Agricultural Sciences Center for Resources Environment and Food Security China Agricultural University

Climate change mitigation is a major challenge of human society. Currently, to this end, many countries including China are committed to achieving carbon neutrality within a few decades. China is a major sugarcane and sugar beet producing country and has one of the largest carbon footprint for sugarcane and sugar beet production globally. A comprehensive study was conducted on sugarcane and sugar beet crops grown in China for greenhouse gas(GHG)emissions mitigation potential, economic crop production from a sustainable sugar production perspective. Long-term trend analysis showed that yield and GHG emissions of sugarcane and sugar beet crops increased but the ratio of income to cost declined. Structural equation model analysis revealed nitrogen fertilizer and labor as the major drivers of GHG emissions for both sugarcane and sugar beet. For sugarcane and sugar beet, the path coefficient of N fertilizer were -0.964 and -0.835 and that of labor were 0.771 and 0.589,respectively. By transitioning the current cropping system to an improved model with optimized labor, N input and machinery use, the GHG emissions and total annual cost of sugarcane and sugar beet production can be reduced by 32% and 24%, respectively, by 2030, compared to a business-as-usual scenario. This is the first integrated and comparative study of environmental and economic sustainability of sugarcane and sugar beet production in *** findings will enable all stakeholders of Chinese sugarcane and sugar beet industries to transform them into environmentally and economically sustainable sugar production.

关键词： Economic profits GHG emissions labor input nitrogen input sugar

Highly Stretchable and Permeable Conductors Based on Shrinkable Electrospun Fiber Mats

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Advanced Fiber Materials 2021年第5期3卷 302-311页

作者： Qingsong Li Chen Ding Wei Yuan Ruijie Xie Xiaomeng Zhou Yang Zhao Mei Yu Zijian Yang Jing Sun Qiong Tian Fei Han Hanfei Li xinping deng Guanglin Li Zhiyuan Liu CAS Key Laboratory of Human‑Machine Intelligence‑Synergy Systems Shenzhen Institutes of Advanced TechnologyChinese Academy of Sciences(CAS)Shenzhen 518055China Printable Electronics Research Centre Suzhou Institute of Nano‑Tech and Nano‑BionicsChinese Academy of SciencesSuzhou 215123China

Wearable on-skin electrodes or conductors should be vapor permeable,strain-insensitive,isotropically stretchable and stable under cyclic *** strategies have been proposed to prepare the required conductors up to now;however,it is a challenge to fabricate them with above properties in a simple *** this paper,a highly permeable and stretchable conductor based on electrospun fluorine rubber fiber mat is *** fibers are pre-stretched in electric field during electrospinning,and they shrink isotropically by~35-40%in area after being detached from the *** obtained fiber mat conductor demonstrates high stretchability up to~170%,and the resistance changes only 0.8 under 60%strain,which is superior to many other strain-insensitive *** conductor possesses high stability,no cracks or structure damage are observed after washing and cyclic ***,the conductor is vapor permeable with a water vapor transmission rate of~850 g m−2 day−1,which is comparable to the normal water evaporation in ambient conditions,indicating that it would not disturb the sweat evaporation when being used on *** conductor is successfully used as stretchable yarns and electromyography(EMG)electrodes,showing high reliability in E-textiles and on-skin applications.

关键词： Electrospinning Shrinkable fiber mat Stretchable conductor Wearable E-textiles EMG signal recording

锑矿废渣模拟酸雨淋溶重金属Sb、As、Hg淋溶释放规律

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土木与环境工程学报（中英文） 2022年第3期44卷 168-176页

作者：周赛军王余心邓新平邓仁健汪建群任伯帜湖南科技大学土木工程学院湖南湘潭411201 湖南省地质矿产勘查开发局402队长沙410014

为了全面系统地研究锑矿废渣中重金属的淋溶释放规律,以湖南省冷水江锡矿山锑矿的锑矿废渣为研究对象,通过对锑矿废渣的消解试验与半动态淋溶试验,测定锑矿废渣与淋溶液中重金属的含量,分析锑矿废渣淋溶液中Sb、As、Hg淋溶释放规律。结... 详细信息

为了全面系统地研究锑矿废渣中重金属的淋溶释放规律,以湖南省冷水江锡矿山锑矿的锑矿废渣为研究对象,通过对锑矿废渣的消解试验与半动态淋溶试验,测定锑矿废渣与淋溶液中重金属的含量,分析锑矿废渣淋溶液中Sb、As、Hg淋溶释放规律。结果表明:锑矿废渣中重金属含量较高,除Pb以外,其余重金属均超《土壤环境质量农用地土壤风险管控标准》(GB 15618—2018)的风险筛选值(pH≤5.5),重金属含量均超湖南省土壤背景值;锑矿冶炼渣在模拟酸雨淋溶下重金属析出浓度在第2~3天达到峰值,锑矿废石与锑矿尾砂淋溶一天后就达到峰值,锑矿废渣重金属累计析出量均为锑矿冶炼渣>锑矿尾砂>锑矿废石;锑矿废渣重金属的累计淋出量与模拟酸雨累计淋出量之间呈二次函数关系。

关键词：锑矿废渣模拟酸雨重金属淋溶释放

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基于自然资源资产化的耕地占补平衡项目指标价值分析——以湖南省东富镇全域土地综合整治项目为例

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国土资源导刊 2022年第3期19卷 45-50页

作者：卫学众邓新平湖南省地质灾害调查监测所湖南长沙410013

耕地后备资源价值估算是实现耕地资源合理开发利用的重要依据,从自然资源资产化的角度构建一定条件下耕地后备资源资产化模型测算一定区域耕地后备资源资产价值和具体占补平衡项目耕地后备资源价值对湖南省耕地后备资源合理开发利用具... 详细信息

耕地后备资源价值估算是实现耕地资源合理开发利用的重要依据,从自然资源资产化的角度构建一定条件下耕地后备资源资产化模型测算一定区域耕地后备资源资产价值和具体占补平衡项目耕地后备资源价值对湖南省耕地后备资源合理开发利用具有重要意义.通过资源资产化模型对株洲醴陵市全域土地综合整治项目后备资源数据对模型结果进行了实证分析,该价值模型测算出的结果与耕地指标实际价值基本一致,运用该价值模型能较好的指导湖南省近年耕地后备资源资产价值核算工作.

关键词：自然资源资产化耕地后备资源耕地占补平衡指标价值模型

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基于卡尔曼滤波模型的平地行走步频预测方法

哈尔滨工程大学学报 2015年第8期36卷 1109-1113页

作者：王超方正余韬邓欣萍江建烽厦门大学物理与机电工程学院福建厦门361005

现有智能下肢的控制策略都是以刚完成的一步的步频为调节阻尼的依据,调整好的阻尼只能在下一步摆动期生效,因此该控制策略是滞后的,无法做到实时控制,在步频变化频繁的场合难以适用。本文方法利用足底压力传感获取步频数据,然后通过卡... 详细信息

现有智能下肢的控制策略都是以刚完成的一步的步频为调节阻尼的依据,调整好的阻尼只能在下一步摆动期生效,因此该控制策略是滞后的,无法做到实时控制,在步频变化频繁的场合难以适用。本文方法利用足底压力传感获取步频数据,然后通过卡尔曼预测方程由已完成的步频预测即将迈出的下一步步频。在模拟日常生活平地行走步频变化的实验中,所预测的下一步步频与后验值之间偏差比跟随方法的偏差大约减小了10%。该方法实时性好,为改善智能下肢的性能提供了新的可行性方案。

关键词：智能下肢步频预测算法足底压力卡尔曼滤波

云南省“直过民族”中老年人抑郁症状的相关因素

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中国心理卫生杂志 2024年第8期38卷 666-673页

作者：王辛平陈杰杜兴梅邓春燕黄源邵维庆邓睿昆明医科大学公共卫生学院昆明650500

目的:了解云南“直过民族”中老年人的抑郁症状检出现状及相关因素。方法:采用分层整群抽样,通过9条目患者健康问卷(PHQ-9)对1035名“直过民族”中老年人的抑郁症状进行测量(总分≥5分判定为有抑郁症状),通过自编问卷调查社会人口学、... 详细信息

目的:了解云南“直过民族”中老年人的抑郁症状检出现状及相关因素。方法:采用分层整群抽样,通过9条目患者健康问卷(PHQ-9)对1035名“直过民族”中老年人的抑郁症状进行测量(总分≥5分判定为有抑郁症状),通过自编问卷调查社会人口学、社会人际网络、心理健康状况、身体健康状况和健康行为5维度的24个变量信息。结果:存在抑郁症状231人(22.32%)。Logistic回归分析显示,职业为工人(OR=8.73)或农民(OR=7.34)或其他(OR=7.13)、近1月内感到紧张或焦虑(OR=5.43)、患1种(OR=2.81)或多种慢性病(OR=2.14)、存在睡眠问题(OR=3.74)、衰弱(OR=1.69)、轻中度疼痛(OR=2.23、4.37)和久坐(OR=2.27)的中老年人抑郁症状发生风险较高;社会支持得分(OR=0.96)和生命意义感得分(OR=0.96)较高的中老年人,抑郁症状发生风险较低。结论:云南省“直过民族”中老年人抑郁症状检出率不低,且受多种因素影响。

关键词：直过民族中老年抑郁症状相关因素

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谈高校图书馆合并后的读者服务

玉溪师范学院学报 2001年第Z1期17卷 145-147页

作者：邓新萍玉溪师范学院图书馆云南玉溪653100

高校合并后 ,出现了图书馆读者数量多、类型杂、分布广、需求大等特点 ,在这种情况下 ,图书馆应以文献资源为依托 ,以读者需求为导向 ,采取多角度、多层次、多思路的服务方式更好地开展读者服务。

关键词：高校合并图书馆读者服务

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湖南兜率岩溶洞特征及形成发育过程

中国岩溶 2018年第3期37卷 462-467页

作者：邓新平袁瑞强皮建高湖南省地质矿产勘查开发局402队长沙410014 山西大学环境与资源学院太原030006

为阐明兜率岩溶洞的形成原因和发育过程,调查了兜率岩溶洞及其周边区域地层岩性和地质构造,测量了溶洞形态及溶蚀堆积物特征;用^(14)C法或U系法对洞内典型堆积物样品进行测年,估算出岩溶堆积物的生长速度,研究结果表明:兜率岩溶洞是完... 详细信息

为阐明兜率岩溶洞的形成原因和发育过程,调查了兜率岩溶洞及其周边区域地层岩性和地质构造,测量了溶洞形态及溶蚀堆积物特征;用^(14)C法或U系法对洞内典型堆积物样品进行测年,估算出岩溶堆积物的生长速度,研究结果表明:兜率岩溶洞是完整的独立溶腔碳酸盐岩洞穴;溶洞内石笋发育强烈,石笋的生长速度略快于石钟乳的生长速度,石笋高度为2~26 m,直径在0.5~5 m,生长速度为0.24~0.50 mm·a^(-1);石钟乳长度为3~20 m,生长速度为0.20~0.40·a^(-1);洞内最高石柱高达37 m,最高的二次沉积物可达12 m,直径为0.6 m。兜率岩溶洞的形成是岩石、水流与构造运动共同作用的结果,区域构造产生的断层和裂隙使区内碳酸盐岩石破碎并遭受地下水的溶蚀和侵蚀,在区域缓慢抬升活动过程中形成了兜率岩溶洞;溶洞的发育经历了三个阶段:距今200~78万年的初始形成阶段,距今78~14万年的发展壮大阶段和距今14万年前至今的稳定沉积阶段。溶洞内大多数的溶蚀堆积物产生于14万年以来,少量的新生溶蚀堆积物基本形成于700年以前。在距今1万年左右开始形成二次沉积物。目前,兜率岩溶洞进入稳定沉积晚期。

关键词：溶洞洞穴特征碳酸盐岩南方岩溶形成时代