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物联网应用中基于位置优先级的UAV分配算法

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火力与指挥控制 2024年第6期49卷 49-54页

作者：赵红超刘丽伟郑州工业应用技术学院大数据信息管理中心郑州451150

针对无人机协助的物联网应用(UAV-IoT),提出基于位置优先级的UAV分配算法。在UAV-IoT应用中,UAV具有感知位置服务数据的能力,并将所感测的IoT数据传输至基站。构建最大化服务效率的优化问题。考虑优化问题的NP-难,采用启发式算法求解。... 详细信息

针对无人机协助的物联网应用(UAV-IoT),提出基于位置优先级的UAV分配算法。在UAV-IoT应用中,UAV具有感知位置服务数据的能力,并将所感测的IoT数据传输至基站。构建最大化服务效率的优化问题。考虑优化问题的NP-难,采用启发式算法求解。计算用户所请求服务的位置优先级,再依据位置优先级排序,使UAV优先为位置优先级高的请求提供服务,进而提升服务效率和降低服务时延。仿真结果表明,相比于随机分配UAVs执行位置服务算法和时延感知的UAV分配算法,LPUA算法的平均服务时延分别下降了约23.4%和10.2%。

关键词：无人机位置服务位置优先级服务时延服务效率

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矿用移动式真空泵阻垢装置的设计与应用

当代化工研究 2024年第3期 102-104页

作者：赵洪超中煤科工集团沈阳研究院有限公司辽宁113122 沈阳煤炭科学研究所有限公司辽宁110015

煤矿的瓦斯抽放泵利用泵壳和叶轮间不同心的安装结构,在叶轮作旋转时,构成与叶轮成偏心的水环,充满在叶轮间的容积,在固定的吸气口和排气口的相应配合下,完成吸气、压缩和排气作用。循环水作为瓦斯抽放泵的重要组成部分,长时间运行的状... 详细信息

煤矿的瓦斯抽放泵利用泵壳和叶轮间不同心的安装结构,在叶轮作旋转时,构成与叶轮成偏心的水环,充满在叶轮间的容积,在固定的吸气口和排气口的相应配合下,完成吸气、压缩和排气作用。循环水作为瓦斯抽放泵的重要组成部分,长时间运行的状态下不可避免的会产生大量的水垢附着在泵体内壁和叶轮上。传统的除垢方法是利用药剂和水垢的化学反应分解水垢,并不能从根本上解决结垢问题。根据以上背景进行瓦斯抽采泵阻垢装置的设计与应用,通过系统对循环水水质的实时监测,可以动态往循环水管投放阻垢剂,保证设备整体系统无新垢产生,能阻止95%以上的水垢产生,减少黏泥及菌类对抽采泵系统的影响。装置智能化程度高,在线监测水质指标,自动添加阻垢剂。

关键词：瓦斯抽采泵水质阻垢剂传感器循环水管在线监测

A hybrid tubular standing support for underground mines:Compressive behaviour

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International Journal of Mining Science and Technology 2021年第2期31卷 215-224页

作者： hongchao zhao Ting Ren Alex Remennikov School of Civil Mining and Environmental EngineeringFaculty of Engineering and Information SciencesUniversity of WollongongNSW 2522Australia 2 School of Geology and Mining EngineeringXinjiang UniversityUrumqi 830000China

This paper presents the development of an innovative standing support for underground *** main feature of this standing support is its exterior container,a combination of polyvinyl chloride(PVC)with large rupture strain and fibre-reinforced polymer(FRP)with high strength-to-weight *** demonstrate the advantages of this cementitious grout filled PVC-FRP tubular(PFT)standing support,a series of compression tests were *** variables included the strength of cementitious grout infill material and the thickness of FRP *** tests were also conducted on cementitious grout-filled PVC tubular(PT)support and cementitious grout-filled FRP tubular(FT)*** tests showed that PFT support presents a typical strain-hardening behaviour together with an outstanding axial deformation ability(>20%of the overall height of the support).In addition,the maximum compressive strength of PFT support is much higher than that of the corresponding PT support and FT ***,using thicker FRP jacket or high strength cementitious grout material can enhance the load carrying capacity of PFT *** comparative results indicated that the high performance of PFT support is mainly attributed to the combination of confining constituents(*** and FRP)and infill material.

关键词： Standing support FRP PVC Confinement Composite structures Underground mines

基于煤岩煤质多元指标的BP神经网络焦油产率预测方法研究

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煤田地质与勘探 2024年第7期52卷 108-118页

作者：乔军伟王昌建赵泓超师庆民张煜范琪王朵袁丹丹西安科技大学地质与环境学院陕西西安710054 西安科技大学陕西省煤炭绿色开发地质保障重点实验室陕西西安710054 西安科技大学煤炭绿色开采地质研究院陕西西安710054 陕西煤业化工集团有限责任公司陕西西安710100 中煤能源研究院有限责任公司陕西西安710054

【目的】焦油产率是煤低温干馏利用最重要的煤质参数,决定着富油煤的清洁利用方向。但由于多方面的原因,在煤炭地质勘查阶段对煤焦油产率的测试数据十分有限,极大地制约了富油煤的精细评价和高效利用。【方法】为了提高富油煤精细评价... 详细信息

【目的】焦油产率是煤低温干馏利用最重要的煤质参数,决定着富油煤的清洁利用方向。但由于多方面的原因,在煤炭地质勘查阶段对煤焦油产率的测试数据十分有限,极大地制约了富油煤的精细评价和高效利用。【方法】为了提高富油煤精细评价的科学性和准确性,以陕北侏罗纪煤田以往测试1073组煤岩煤质数据为基础,并筛选出显微组分、工业分析、元素分析、灰成分分析等20项煤岩煤质参数齐全的141组数据,利用BP神经网络算法分别建立了20项煤岩煤质指标的焦油产率预测模型和以4项工业分析为基础的焦油产率预测模型,并对预测模型的准确性和合理性进行分析评价。【结果和结论】结果表明:以20项煤岩煤质指标为特征建立的预测模型最终训练均方误差为0.30,测试集数据预测结果平均绝对误差为0.65;以4项工业分析指标为特征建立的预测模型最终训练均方误差为1.07,测试集数据预测结果平均绝对误差为1.35;扩展集数据在两个模型中预测结果平均绝对误差分别为0.84和1.34,显示出20项煤岩煤质指标比4项工业分析煤质指标建立的预测模型具有更高的拟合优度和泛化性能。利用SHAP算法进一步对预测模型中20项煤岩煤质指标的重要性进行量化分析,显示出镜质组、氢元素、三氧化二铁、水分、挥发分、碳元素、壳质组、氧元素含量是焦油产率的正向影响因素,三氧化二铝、惰质组、固定碳、灰分、二氧化硅含量是焦油产率的负向影响因素,模型中煤岩煤质与焦油产率之间的内在联系很好地契合了地质上对焦油产率影响因素的基本认识,该焦油产率预测模型可以很好地应用于陕北侏罗纪煤田的焦油产率预测,为陕北地区富油煤的清洁高效利用提供支撑。

关键词：焦油产率 BP神经网络机器学习富油煤陕北侏罗纪煤田

Evaluation of the Performance of the GSSM Under Vibration Based on Normalized Point Source Sensitivity

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Journal of Harbin Institute of Technology(New Series) 2017年第5期24卷 82-87页

作者： Qichang An Jingxu Zhang Fei Yang hongchao zhao Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of Sciences Graduate University of Chinese Academy of Sciences

Giant Steerable Science Mirror( GSSM) is the tertiary mirror of the Thirty Meter Telescope( TMT).To evaluate the performance of the GSSM under the mechanical vibration,the Normalized Point Source Sensitivity( PSSn) is used to understand and characterize the optical performance degradation. First and foremost,the definition of the PSSn is shown and the calculation procedure of the PSSn at the work condition where the telescope aberration is much smaller than seeing is presented to reveal the relationship between PSSn and ***,the optical degradation due to vibration is achieved by the two methods: one is the statistics moment for the arbitrary froms of vibration and other one is spectrum method for wind load. After the theoretical presence,the simulation is processed. The multi-axis-accelerometers are used to achieve the motion of the mirror. After integrated to displacement signal,the measured signal is applied to the mathematical model of the GSSM and the optical performance degradation under certain mechanical vibration can be achieved. The PSSN flows from 0.996 to 0.994 under some dynamic vibration. And then,the wind load is applied to the mathematical model using spectrum method with the PSSN flows from 0.996 to 0.991. This paper can help the system engineers to predict the performance of the GSSM in various work condition. What is more,PSSn is able to be combined just by simple multiplication,so the optical performance degradation can be easily co-considered with other error sources.

关键词： Thirty Meter Telescope Normalized Point Source Sensitivity optical transfer function mechanical vibration

TMT Tertiary Mirror Optical Jitter Model Metrology

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Journal of Harbin Institute of Technology(New Series) 2016年第6期23卷 67-72页

作者： Qichang An Jingxu Zhang Fei Yang hongchao zhao Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 China Graduate University of Chinese Academy of Sciences Beijing 100039 China

To measure the jitter performance of the Tirthy Meter Telescope tertary mirror( TMT M3),the model of jitter based on the accerleration signal is established. First and foremost,the procedure TMT required to processs the jitter data is presented. Then,the jitter of the system is divided into two parts: powered jitter and unpowered jitter. The metric of the jitter is required to be in the form of displacement or angle. So the frequency integration is involved to minify the error source introduced by the tending iterm in the time domain *** the evaluation of the power jitter,the accelerometers are used to obtain the rigid body motion of the tertiary mirror. The random decrement technique and dominated mode theory are applied to obtain the model of unpowered jitter. A classical telescope performances a 1. 6"RMS jitter metric; for a four meter scale system,the resonance frequency is around 107 Hz,powering,with 0. 14% damping. Consequently,the tip( 183 Hz,0.6%) and tilt( 193 Hz,0.19%) are both be measured. Using this model,the system engineers can estimate the unpowered jitter when the system is presented in the distortion.

关键词： TMT M3 numerical integration jitter transfer function power spectral density wind load

针刺治疗对慢性前列腺炎/慢性盆腔疼痛综合征患者生活质量的影响:随机对照试验

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中国针灸 2024年第4期44卷 411-417页

作者：王怀玉纪元张朔苑朋飞赵宏超国艳谢霄笛丁玉龙北京市丰台中西医结合医院针灸科北京100072

目的:观察针刺治疗对慢性前列腺炎/慢性盆腔疼痛综合征(CP/CPPS)患者生活质量、疼痛及前列腺症状的影响及安全性。方法:将70例CP/CPPS患者随机分为针刺组(35例,剔除1例)和假针刺组(35例,脱落3例)。针刺组于双侧中髎、会阳、肾俞、三阴... 详细信息

目的:观察针刺治疗对慢性前列腺炎/慢性盆腔疼痛综合征(CP/CPPS)患者生活质量、疼痛及前列腺症状的影响及安全性。方法:将70例CP/CPPS患者随机分为针刺组(35例,剔除1例)和假针刺组(35例,脱落3例)。针刺组于双侧中髎、会阳、肾俞、三阴交行常规针刺;假针刺组于双侧中髎、会阳、肾俞及三阴交旁开非经非穴点进行浅刺,不行手法,不引发得气感。两组均留针30 min,隔日1次,每周3次,治疗8周(24次)。于治疗前后及治疗结束后24周随访时,观察两组患者健康调查简表[SF-36,包括生理机能(PF)、生理职能(RP)、躯体疼痛(BP)、一般健康状况(GH)、精力(VT)、社会功能(SF)、情感职能(RE)、精神健康(MH)8个维度,8个维度可概括为躯体健康总测量(PCS)和心理健康总测量(MCS)评分两方面]、盆腔疼痛视觉模拟量表(VAS)、美国国立卫生研究院慢性前列腺炎症状指数(NIH-CPSI)、国际前列腺症状(IPSS)评分,并评价两组安全性。结果:治疗后及随访时,针刺组SF-36各维度评分及PCS、MCS评分较治疗前升高(P0.05)。结论:针刺治疗可有效提高CP/CPPS患者生活质量,降低疼痛程度,改善前列腺症状,远期疗效较好。

关键词：慢性前列腺炎/慢性盆腔疼痛综合征针刺生活质量评价随机对照试验

低温环境下低温热水主动抑霜增效的蒸发器流动与传热数值模拟

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能源工程 2024年第2期44卷 13-19页

作者：夏雨萍罗会龙赵洪超王鑫宇昆明理工大学建筑工程学院云南昆明650500

针对空气源热泵在低温工况下运行时存在的缺陷,综合考虑多种影响因素,设计了一种在蒸发器迎风侧部分,增设热回水管道的主动抑霜增效的空气源热泵;以系统中蒸发器部件为研究对象,通过数值模拟软件Fluent,对比分析了管间距、翅片间距、管... 详细信息

针对空气源热泵在低温工况下运行时存在的缺陷,综合考虑多种影响因素,设计了一种在蒸发器迎风侧部分,增设热回水管道的主动抑霜增效的空气源热泵;以系统中蒸发器部件为研究对象,通过数值模拟软件Fluent,对比分析了管间距、翅片间距、管型及管排数对普通管式翅片蒸发器与提出的新型蒸发器空气侧性能变化影响。结果表明:模拟流域内,新型蒸发器的流域内整体温度上升,流阻无变化,出口温度较普通型蒸发器至少高2℃;综合考虑管间距、翅片间距、管型及管排数的影响后,可选择较小管间距、1.5mm的翅片间距、前椭后圆管型组合多排数管道。

关键词：数值模拟蒸发器主动抑霜空气源热泵流阻

Analysis on Self-compatibility of Artificially Synthesized Brassica napus Lines from Different Cross Combinations

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Agricultural Biotechnology 2013年第6期2卷 17-20页

作者： Zhigang zhao hongchao zhao Qinglan YU Qinghai Academy of Agricultural and Forestry Sciences/Key Laboratory for Plateau Crop Germplasm Innovation and Utilization of Qinghai Province

Brassica rapa cuhivars Qinghaidahuang and Menyuan small rape were used as female parents and separately interspecifically hybridized with Zhongchijie- lan to artificially synthesize a number of Brasica napus resources. Observation of meiosis, pollen fertility and pollen tube germination and analysis of self-compati- bility index of these artificial B. napus varieties were conducted. Results showed that pollen mother cells of artificial B. napus lines from two cross combinations all had normal chromosome behavior and high pollen fertility, but the selfing seed-setting and self-compatibility index varied extremely significantly; B. napus lines from cross combination Qinghaidahuang x Zhongchijidan are highly self-compatible, while B. napus lines from cross combination Menyuan small rape x Zhongchijielan are highly self-incompatible. This study analyzed the heredity laws of self-incompatibility trait in artificially synthesized lines and discussed applica- tion prospects of artificially synthesized self-incompatible B. napus lines in rapeseed production.

关键词： Qinghaidahuang Menyuan small rape Artificially synthesized Brassica napus Self-incompatibility