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Research Developments and Prospects on Microseismic Source Location in Mines

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Engineering 2018年第5期4卷 653-660页

作者： Jiulong cheng Guangdong Song xiaoyun Sun Laifu Wen Fei Li State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology Beijing 100083 China Laser Institute Qilu University of Technology (Shandong Academy of Sciences) Jinan 250014 China School of Electrical and Electronic Engineering Shijiazhuang Tiedao University Shijiazhuang 050043 China

Microseismic source location is the essential factor in microseismic monitoring technology, and its loca- tion precision has a large impact on the performance of the technique. Here, we discuss the problem of low-precision location identification for microseismic events in a mine, as may be obtained using conven-tional location methods that are based on arrival time. In this paper, microseismic location characteristics in mining are analyzed according to the characteristics of the mine＇s microseismic wavefield. We review research progress in mine-related microseismic source location methods in recent years, including the combination of the Geiger method with the linear method, combined microseismic event location method, optimization of relative location method, location method without pre-measured velocity, and location method without arrival time picking. The advantages and disadvantages of these methods are discussed, along with their feasible conditions. The influences of geophone distribution, first arrival time picking, and the velocity model on microseismic source location are analyzed, and measures are proposed to influence these factors. Approaches to solve the problem under study include adopting information fusion, combining and optimizing existing methods, and creating new methods to realize high-precision microseismic source location. Optimization of the velocity structure, along with applications of the time-reversal imaging technique, passive time-reversal mirror, and relative interferometric imag-ing, are expected to greatly improve microseismic location precision in mines. This paper also discusses the potential application of information fusion and deep learning methods in microseismic source location in mines. These new and innovative location methods for microseismic source location have extensive prospects for development.

关键词： Microseismic source location Influencing factors Time-reversal imaging Research progress Prospects for development

蜂窝状活性竹炭帘的研制及在水净化处理中的应用

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世界竹藤通讯 2009年第5期7卷 18-20页

作者：华文礼翁益明徐贤庚程晓云邱永华遂昌县林业局浙江遂昌323300 遂昌县徐福炭业有限公司

利用竹炭具有较好的吸附作用和六角形分子稳固结构的性能,将竹质活性炭、壳聚糖、纤维素及添加剂合成蜂窝状活性竹炭帘应用于水污染处理,解决了传统活性炭无法固定、机械强度不足、吸附后无法脱释的问题。在生物法污水处理中,可为微生... 详细信息

利用竹炭具有较好的吸附作用和六角形分子稳固结构的性能,将竹质活性炭、壳聚糖、纤维素及添加剂合成蜂窝状活性竹炭帘应用于水污染处理,解决了传统活性炭无法固定、机械强度不足、吸附后无法脱释的问题。在生物法污水处理中,可为微生物成长环境提供生长膜,节约大量的絮凝剂,用于臭氧法污水处理降解COD可起到再生脱释,达到重复利用、持续吸附的目的。

关键词：竹炭污水处理蜂窝状吸附

北京地区慢性萎缩性胃炎伴糜烂患者277例的病因和治疗现状

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中华消化杂志 2021年第Z1期41卷 27-32页

作者：杨莹韵李渊张海芳程小韵关玉霞王静贾淑娟丁士刚李景南中国医学科学院北京协和医学院北京协和医院消化内科中国医学科学院肠道微生态临床疾病转化研究重点实验室北京大学第三医院消化内科北京大学首钢医院消化内科

目的初步了解北京地区慢性胃炎伴糜烂患者的生活习惯、用药情况和治疗现状, 包括治疗方案的选择、依从性和短期疗效。方法前瞻性纳入2019年4月至9月北京协和医院、北京大学第三医院和北京大学首钢医院的慢性胃炎伴糜烂(就诊前2周经胃镜... 详细信息

目的初步了解北京地区慢性胃炎伴糜烂患者的生活习惯、用药情况和治疗现状, 包括治疗方案的选择、依从性和短期疗效。方法前瞻性纳入2019年4月至9月北京协和医院、北京大学第三医院和北京大学首钢医院的慢性胃炎伴糜烂(就诊前2周经胃镜检查确诊)门诊患者, 对其进行非干预性观察研究。统计学方法采用卡方检验。结果共277例慢性胃炎伴糜烂患者有完整随访数据, 其中男性占49.8%(138/277)。慢性胃炎伴糜烂患者常见的初始症状包括反酸、腹胀、上腹痛和餐后饱胀, 分别占60.3%(167/277)、59.6%(165/277)、58.8%(163/277)和52.3%(145/277)。治疗方面, 36.8%(102/277)的患者仅接受一般生活指导而未予药物治疗;在接受药物治疗的患者中, 胃黏膜保护剂+质子泵抑制剂+胃肠促动药对于腹胀、餐后饱胀、反酸和恶心的短期有效率最高, 差异均有统计学意义(χ2=25.18、19.49、13.75、8.84, P均<0.05)。结论慢性胃炎伴糜烂可能是综合多个因素的作用而导致, 其症状不具有特异性, 必要时胃镜检查或能辅助诊断, 治疗方面可能需要依据患者症状制订个体化方案。

关键词：慢性胃炎伴糜烂生活方式症状内镜表现治疗

Photonic neuromorphic architecture for tens-of-task lifelong learning

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Light(Science & Applications) 2024年第3期13卷 519-530页

作者： Yuan cheng Jianing Zhang Tiankuang Zhou Yuyan Wang Zhihao Xu xiaoyun Yuan Lu Fang Sigma Laboratory Department of Electronic EngineeringTsinghua UniversityBeijing 100084China Beijing National Research Center for Information Science and Technology(BNRist) Beijing 100084China Institute for Brain and Cognitive Science Tsinghua University(THUIBCS)Beijing 100084China

Scalable,high-capacity,and low-power computing architecture is the primary assurance for increasingly manifold and large-scale machine learning *** electronic artificial agents by conventional power-hungry processors have faced the issues of energy and scaling walls,hindering them from the sustainable performance improvement and iterative multi-task *** to another modality of light,photonic computing has been progressively applied in high-efficient neuromorphic ***,we innovate a reconfigurable lifelong-learning optical neural network(L2 ONN),for highly-integrated tens-of-task machine intelligence with elaborated algorithm-hardware *** from the inherent sparsity and parallelism in massive photonic connections,L2 ONN learns each single task by adaptively activating sparse photonic neuron connections in the coherent light field,while incrementally acquiring expertise on various tasks by gradually enlarging the *** multi-task optical features are parallelly processed by multi-spectrum representations allocated with different *** evaluations on freespace and on-chip architectures confirm that for the first time,L2 ONN avoided the catastrophic forgetting issue of photonic computing,owning versatile skills on challenging tens-of-tasks(vision classification,voice recognition,medical diagnosis,etc.)with a single ***,L2 ONN achieves more than an order of magnitude higher efficiency than the representative electronic artificial neural networks,and 14×larger capacity than existing optical neural networks while maintaining competitive performance on each individual *** proposed photonic neuromorphic architecture points out a new form of lifelong learning scheme,permitting terminal/edge AI systems with light-speed efficiency and unprecedented scalability.

关键词： life neural versatile

社群性别结构对遂昌牛头山白鹇活动节律的影响

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丽水学院学报 2020年第5期42卷 31-36页

作者：龚笑飞程晓云曹华潘江炎樊晓丽林植华遂昌县林业发展中心浙江遂昌323300 丽水学院生态学院浙江丽水323000

2018年1月至2019年1月,在遂昌牛头山林场内布设57台Ltlacorn红外相机,对不同性别结构的白鹇社群活动节律进行研究。通过不同社群的活动节律及生态因子选择的差异分析社群性别结构对白鹇活动节律的影响。结果显示,不同社群性别结构的白... 详细信息

2018年1月至2019年1月,在遂昌牛头山林场内布设57台Ltlacorn红外相机,对不同性别结构的白鹇社群活动节律进行研究。通过不同社群的活动节律及生态因子选择的差异分析社群性别结构对白鹇活动节律的影响。结果显示,不同社群性别结构的白鹇种群在日活动节律的3个活动高峰期存在一定程度的错峰现象。白鹇集群行为的季节性变化可能是导致不同社群性别结构的种群间季节活动节律差异的原因之一。白鹇活动最适宜环境温度范围为20~25℃,纯雌鸟群与纯雄鸟群的次活动高峰的温度选择存在一定程度的差异。白鹇偏好栖息在常绿阔叶林,偏好在春季活动,不同社群性别结构之间差异不显著。

关键词：白鹇性别结构活动节律红外相机

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从激励理论谈骨折患者的康复锻炼依从性

中国现代医生 2012年第36期50卷 142-143页

作者：段清萍朱琳陈捷程小芸黄淑芬叶彩霞广东省深圳市宝安区人民医院骨科广东深圳518101

目的探讨激励理论对骨折患者康复锻炼依从性的影响。方法应用需要层次、强化、期望、目标激励理论对骨折患者进行康复锻炼指导,掌握使用原则、加强心理护理、动态评估患者康复锻炼依从性情况、注重护士康复知识培训。结果密切了护患关系... 详细信息

目的探讨激励理论对骨折患者康复锻炼依从性的影响。方法应用需要层次、强化、期望、目标激励理论对骨折患者进行康复锻炼指导,掌握使用原则、加强心理护理、动态评估患者康复锻炼依从性情况、注重护士康复知识培训。结果密切了护患关系,提高了患者主动锻炼的意识,提高了康复锻炼依从性。结论在康复锻炼指导过程中,应用激励理论具有重要性和必要性。

关键词：激励理论骨折患者康复锻炼依从性

模拟临床情景考核法在基础护理学实训中的应用

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甘肃中医药大学学报 2020年第4期37卷 102-105页

作者：王波赵丽霞李丹琳程晓芸杜娟张珺甘肃中医药大学护理学院甘肃兰州730101 甘肃中医药大学附属医院普外科甘肃兰州730020

目的观察模拟临床情景考核法在基础护理学实训中的应用效果。方法将我校2015级护理学本科专业2个班设为试验组(56名)和对照组(59名)。对照组采用传统实训考核方法进行考核,试验组采用模拟临床情景考核法进行考核。比较2组的实训考核成绩... 详细信息

目的观察模拟临床情景考核法在基础护理学实训中的应用效果。方法将我校2015级护理学本科专业2个班设为试验组(56名)和对照组(59名)。对照组采用传统实训考核方法进行考核,试验组采用模拟临床情景考核法进行考核。比较2组的实训考核成绩,并通过问卷调查试验组护生对模拟临床情景考核法的评价。结果试验组实训考核成绩明显高于对照组,2组比较差异有统计学意义(P<0.05)。94.6%的护生愿意选择模拟临床情景考核法,认为此种考核方法优于传统实训考核方法;94.6%的护生认为模拟临床情景考核法提高了训练的自觉性及积极性;98.2%的护生认为模拟临床情景考核法能与临床接轨;100.0%的护生认为模拟临床情景考核法能培养团队协作精神。结论模拟临床情景考核法可以提高护生的实训考核成绩,调动学习积极性,培养临床思维能力和团队协作精神,并可提升护生的沟通交流技巧。

关键词：基础护理学模拟临床情景考核法实训护生教学研究

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不同锌水平对姜苗氮代谢的影响

山东农业大学学报（自然科学版） 1993年第2期24卷 207-210页

作者：王晓云程炳嵩张国珍山东农业大学植物生理生化研究室

试验结果表明,栽培于不同锌水平培养液中的姜苗,其氮代谢有明显差异。缺锌时,核糖核酸酶活性高,硝酸还原酶活性低,水溶性蛋白质含量也低,游离氨基酸积累,No_3^--N 多,而 NH_4^+-N 少。锌多量时也有与缺锌相似的趋势。

关键词：锌姜氮代谢

Vertical deformation analysis based on combined adjustment for GNSS and leveling data

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Geodesy and Geodynamics 2023年第5期14卷 477-484页

作者： Jianliang Nie Jie Tian Xinwei Guo Bin Wang xiaoyun Liu Yaxuan cheng Pengtao Jiao Geodetic Data Processing Center of Ministry of Natural Resources Shaanxi Bureau of Surveying Mapping and GeoinformationXi'an 710054China Geodetic Data Processing Center of Ministry of Natural Resources Xi'an 710054China The First Geodetic Surveying Bridge of Ministry of Natural Resources Xi'an 710054China The Second Topographic Surveying Brigade of Natural Resources Xi'an 710054China

A method is proposed to fuse the velocity data of the global navigation satellite system(GNSS) and leveling height via combined adjustment with constraints. First, stable GNSS-leveling points are uniformly selected, and the constraints of the geodetic height change velocity and normal height change velocity are given. Then, the GNSS vertical velocities and leveling height difference are used as observations of combined adjustment, and robust least-squares estimation are used to estimate the velocities of the unknown points. Finally, a vertical movement model is established with the GNSS vertical velocities and leveling vertical velocities obtained via combined adjustment. Data from the second-order leveling network and GNSS control points in Shandong Province are taken as test data, and eight calculation schemes are used for discussion. One of the schemes, the bifactor robust combined adjustment method based on variance component estimation with two kinds of vertical velocity constraints achieves the optimal results. The method applied in the scheme can be recommended for data fusion of GNSS and leveling, further improving the reliability of vertical crustal movement in Shandong Province.

关键词： Vertical crustal movement GNSS Leveling Robust adjustment Data fusion