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High-Confidence Computing 2022年第4期2卷 14-22页

作者： Ya Gao Aiqing Zhang Shu Wu jindou chen School of Physics and Electronic Information Anhui Normal UnivresityWuhu 241002China Anhui Provincial Engineering Laboratory on Information Fusion and Control of Intelligent Rabot Wuhu 241002China

Permission delegation has become a new way for data sharing by delegating the authorized permission to other users.A flexible authorization model with strict access control policies is promising for electronic health record(EHR)sharing with *** this paper,a blockchain-based multi-hop permission delegation scheme with controllable delegation depth for EHR sharing has been *** use the interplanetary file system(IPFS)for storing the original *** contracts and proxy re-encryption technology are implemented for permission *** order to ensure data security,we use attribute-based encryption to provide fine-grained access ***,blockchain is used to achieve traceability and *** deploy smart contracts so that the delegation depth can be set by *** analysis of the proposed protocol shows that our solution meets the designed ***,we evaluate the proposed algorithm and implement the scheme on the Ethereum test *** scheme outperforms the competition in terms of performance,according to the results of our experiments.

关键词： Blockchain Data security Permission delegation Access control Smart contract

Efficient Task Completion for Parallel Offloading in Vehicular Fog Computing

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China Communications 2019年第11期16卷 42-55页

作者： jindou Xie Yunjian Jia Zhengchuan chen Zhaojun Nan Liang Liang Chongqing Key Laboratory of Space Information Network and Intelligent Information Fusion School of Microelectronics and Communication Engineering Chongqing University

In this paper,we investigate vehicular fog computing system and develop an effective parallel offloading *** service time,that addresses task offloading delay,task decomposition and handover cost,is adopted as the metric of offloading *** propose an available resource-aware based parallel offloading scheme,which decides target fog nodes by RSU for computation offloading jointly considering effect of vehicles mobility and time-varying computation *** on Hidden Markov model and Markov chain theories,proposed scheme effectively handles the imperfect system state information for fog nodes selection by jointly achieving mobility awareness and computation *** results are presented to corroborate the theoretical analysis and validate the effectiveness of the proposed algorithm.

关键词： parallel offloading vehicular fog computing task offloading HMM

Analysis and evaluation of vibration characteristics of a new type of electric mini-tiller based on vibration test

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International Journal of Agricultural and Biological Engineering 2019年第5期12卷 106-110页

作者： Po Niu Jian chen jindou Zhao Zeyong Luo College of Engineering and Technology Southwest UniversityChongqing 400715China

Now the internal combustion engine mini-tiller has become the main and indispensable agricultural machinery in vast hilly and mountainous areas of Southwest ***,its intense vibration may pose a big threat to *** a countermeasure to the tiller vibration,a new type of electric mini-tiller powered with a group of lithium battery and a brushless DC motor was *** vibration signals at the handle of the tiller were tested under 6 conditions as follows:the tiller was under states of static and working in the field,at slow,medium and rapid speed,*** signals were processed by means of the time domain eigenvalue analysis and the frequency spectrum *** results show that with the electric motor rated speed increased from 95 to 140 r/min under static conditions,the RMS values increased 122.54%,and with the forward speed increased from 0.30 to 0.80 m/s under working conditions,the RMS values increased 201.78%.When the tiller was working,the first order vibration frequencies were 25.99 Hz,26.99 Hz and 28.99 Hz at slow,medium and rapid speed respectively,all not within 37.50-65.00 Hz,the sensitive range of human hands to the vibration *** addition,according to the results of hand transmitted vibration analysis,it can be found that compared with operating the internal combustion engine mini-tiller under the same working condition,the onset of vibration-induced white finger can be delayed for 3.70 years to 10.20 years by operation of the new electric tiller.

关键词： electric mini-tiller vibration characteristics time domain analysis frequency domain analysis hand transmitted vibration

Integration of morphology and electronic structure modulation on cobalt phosphide nanosheets to boost photocatalytic hydrogen evolution from ammonia borane hydrolysis

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Green Energy & Environment 2024年第2期9卷 333-343页

作者： Chao Wan Yu Liang Liu Zhou jindou Huang Jiapei Wang Fengqiu chen Xiaoli Zhan Dang-guo cheng School of Chemistry and Chemical Engineering Anhui Province Key Laboratory of Coal Clean Conversion and High Valued UtilizationAnhui University of TechnologyMa'anshan243002China College of Chemical and Biological Engineering Zhejiang UniversityZhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology38 Zheda RoadHangzhou310027China Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission Key Laboratory of Photosensitive Materials&Devices of Liaoning ProvinceSchool of Physics and Materials EngineeringDalian Nationalities University 18 Liaohe West RoadDalian116600China Institute of Zhejiang University-Quzhou 78 Jiuhua Boulevard NorthQuzhou324000China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Changzhou University213164China

The controllable and safe hydrogen storage technologies are widely recognized as the main bottleneck for the accomplishment of sustainable hydrogen *** borane(AB)has regarded as a competitive candidate for chemical hydrogen ***,developing efficient yet high-performance catalysts towards hydrogen evolution from AB hydrolysis remains an enormous ***,cobalt phosphide nanosheets are synthesized by a facile salt-assisted along with low-temperature phosphidation strategy for simultaneously modulating its morphology and electronic structure,and function as hydrogen evolution ***,the Co_(2)P nanosheets display extraordinary performance with a record high turnover frequency of 44.9 min^(-1),outperforming most of the noble-metal-free catalysts reported to *** remarkable performance is attributed to its desired nanosheets structure,featuring with high specific surface area,abundant exposed active sites,and short charge diffusion *** findings provide a novel strategy for regulating metal phosphides with desired phase structure and morphology for energy-related applications and beyond.

关键词： Ammonia borane Hydrogen generation Hydrolysis Cobalt phosphide nanosheets Photocatalysis

中原油田轻烃深加工改扩建工程技术特点与分析

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天然气与石油 2003年第2期21卷 23-25页

作者：张书丽易明新商剑峰刘金斗乔国安陈平文中国石油化工股份有限公司中原油田分公司河南濮阳457001

为了充分利用轻烃资源,进一步开拓市场,中原油田对1995年建成的第1套25kt/a稳定轻烃深加工处理装置进行了改扩建,新增1套25kt/a轻烃深加工装置。该装置的工艺更加优化,控制更加先进,主导产品质量大大提高,并新开发出了高纯度正戊烷、高... 详细信息

为了充分利用轻烃资源,进一步开拓市场,中原油田对1995年建成的第1套25kt/a稳定轻烃深加工处理装置进行了改扩建,新增1套25kt/a轻烃深加工装置。该装置的工艺更加优化,控制更加先进,主导产品质量大大提高,并新开发出了高纯度正戊烷、高纯度异戊烷、高标号6#抽提溶剂油、环戊烷等产品。

关键词：轻烃深加工装置改扩建中原油田

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纳米流体为工质的直吸式太阳集热器性能研究

太阳能学报 2016年第7期37卷 1845-1850页

作者：陈慧朱群志李金斗李超唐李清上海电力学院能源与机械工程学院上海200090

搭建具有自动跟踪功能的直吸式太阳集热器实验系统,以Ti N-EG纳米流体为工质,采用菲涅尔透镜将太阳光聚焦到集热管上,集热管采用双层真空管。测量不同流量、辐照度时集热管内部及进出口处的流体温度;使用CFD软件得出集热管内的温度分布... 详细信息

搭建具有自动跟踪功能的直吸式太阳集热器实验系统,以Ti N-EG纳米流体为工质,采用菲涅尔透镜将太阳光聚焦到集热管上,集热管采用双层真空管。测量不同流量、辐照度时集热管内部及进出口处的流体温度;使用CFD软件得出集热管内的温度分布。通过分析管内的温度分布、进出口温差及集热器的热效率,对集热器的工作性能进行评价。结果表明:数值模拟与实验结果较吻合,集热器的热效率可达70%以上,出口处工质温度达到120℃以上,该集热器可工作于中温区域。

关键词：纳米流体直吸式集热器自动跟踪集热效率数值模拟

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心动过速性心肌病

中华实用儿科临床杂志 2017年第1期32卷 10-13页

作者：安金斗陈晓光郑州大学第一附属医院儿科 450052

长期存在心动过速可引起心动过速性心肌病（TCM），临床表现类似于扩张型心肌病，但经治疗后，心功能可部分或完全恢复。现通过对TCM的定义、病因、发病机制、诊断及治疗进行综述，旨在丰富临床医师对儿童TCM诊断治疗的思路。

关键词：心动过速性心肌病病因发病机制诊断治疗

Te基热电器件反常界面层生长行为及界面稳定性研究

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无机材料学报 2024年第8期39卷 903-910,I0004-I0007页

作者：苗鑫闫世强韦金豆吴超樊文浩陈少平太原理工大学材料科学与工程学院太原030024 太原理工大学物理学院太原030024

单质Te具有优异的热电优值(ZT),但其与金属电极连接界面处的剧烈元素交互扩散及反应会引入较大的接触电阻率(ρc),导致器件的转换效率(η)较低。因此,寻找合适的阻挡层来优化Te与金属电极间的连接至关重要。本研究基于梯度结构报道了一... 详细信息

单质Te具有优异的热电优值(ZT),但其与金属电极连接界面处的剧烈元素交互扩散及反应会引入较大的接触电阻率(ρc),导致器件的转换效率(η)较低。因此,寻找合适的阻挡层来优化Te与金属电极间的连接至关重要。本研究基于梯度结构报道了一种宽相场Ni-Te合金阻挡层NiTe_(2-m)(NixTe(x=0.500~0.908))。结果表明,当x=0.500时,Ni_(0.5)Te/Te_(0.985)Sb_(0.015)/Ni_(0.5)Te器件的界面处无任何反应层及微观缺陷,ρ_(c)小于10μΩ·cm^(2),η在180K温差(热端温度473K)时达到了理论值的75%。同时,界面具有良好的热稳定性,在473K老化期间,界面微观组织、ρ_(c)以及η无明显变化。当x>0.500时,界面反应层厚度随x增大而逐渐减小,即主导界面反应层生长行为的因素并非常规的界面反应能及浓度梯度等热力学因素。进一步分析表明,反常生长源于动力学因素中的“原子空位”对反应层生成的迟滞作用。

关键词： Te 热电器件扩散动力学阻挡层热稳定性

面向负荷管理过程的工业用户安全用电风险态势感知方法

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高电压技术 2023年第7期49卷 2796-2805页

作者：陈宗汉徐永海陶顺袁金斗杨恒潘明明华北电力大学电气与电子工程学院北京102206 需求侧多能互补优化与供需互动技术北京市重点实验室(中国电力科学研究院有限公司) 北京100192 国家电网有限公司北京100031

为评估工业用户内部负荷设备受调控时存在的风险态势并加以防范,基于态势感知技术,提出了一种面向负荷管理过程的工业用户安全用电风险态势感知方法。首先,基于工业用户负荷设备的历史出力数据和故障率,训练贝叶斯长短期记忆网络(long s... 详细信息

为评估工业用户内部负荷设备受调控时存在的风险态势并加以防范,基于态势感知技术,提出了一种面向负荷管理过程的工业用户安全用电风险态势感知方法。首先,基于工业用户负荷设备的历史出力数据和故障率,训练贝叶斯长短期记忆网络(long short-term memory,LSTM)模型预测风险传播时刻的对应值;然后,类比SI(susceptible and infective)模型,提出了考虑负荷不确定性的风险传播模型;其次,从负荷设备自身安全风险、生产过程风险和经济损失风险3个角度提出了工业用户安全用电风险态势呈现指标体系;最后,基于风险传播模型和指标体系,有效实现工业用户内部负荷设备调控对象优选和指导风险防控方案制定。采用钢厂工业用户进行仿真算例分析,验证所提方法的合理性和有效性。

关键词：负荷管理工业用户安全用电风险态势风险传播模型态势感知

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楼宇可调节负荷研究与应用

电力需求侧管理 2023年第1期25卷 52-58页

作者：袁金斗陈宋宋需求侧多能互补优化与供需互动技术北京市重点实验室(中国电力科学研究院有限公司) 北京100192

楼宇可调节负荷应用存在普查手段缺乏、负荷模型实用性不高以及通信接口不规范等问题,严重制约了其发展,为此首先提出可调节负荷树状普查体系作为普查程序的逻辑架构,然后构建通用约束条件下系统实操层面的负荷调控模型,最后在云管边端... 详细信息

楼宇可调节负荷应用存在普查手段缺乏、负荷模型实用性不高以及通信接口不规范等问题,严重制约了其发展,为此首先提出可调节负荷树状普查体系作为普查程序的逻辑架构,然后构建通用约束条件下系统实操层面的负荷调控模型,最后在云管边端的物理架构下设计了楼宇可调节负荷参与电力需求响应的信息交互规范,为楼宇可调节负荷应用给出了关键技术路线和解决方案。实验结果验证了楼宇可调节负荷参与需求响应削峰填谷场景的可行性。下阶段通过实际可调节负荷普查的开展以及需求响应软硬件能力的建设,楼宇可调节负荷潜力将会被进一步挖掘,成为能源互联网源互联网用户侧的重要组成部分。

关键词：需求响应可调节负荷商业楼宇信息交互