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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1421-1440页

作者： feiyu yan Xin Chen Zhenzhen Wang Yuxuan Xia Dehui Zheng Sirui Xue Hongliang Zhao Zhiwei Huang Yuan Niu Guoliang Zhang School of Life Sciences and Food Engineering Huaiyin Institute of TechnologyHuai’an223003China Jianghuai Plain Crop Industry Engineering Research Institute Huaiyin Institute of TechnologyHuai’an223003China

Melatonin and abscisic acid,as major plant hormones,play important roles in the physiological and biochemical activities of crops,but the interaction between the two under salt stress is not yet *** study investigated the endogenous levels of melatonin and abscisic acid in rice by using exogenous melatonin,abscisic acid,and their synthetic inhibitors,and examined their interactions under salt *** research results indicate that melatonin and abscisic acid can improve rice salt *** alleviated the salt sensitivity caused by abscisic acid deﬁciency,increased antioxidant enzyme activity and antioxidant content in rice treated with abscisic acid synth-esis inhibitors,and reduced total reactive oxygen species content and thiobarbituric acid reactive substance *** also increased the activity of key photosynthetic enzymes and the content of photosynthetic pigments,maintaining the parameters of photosynthetic gas exchange and chlorophyllﬂ*** summary,melatonin alleviated the effects of abscisic acid deﬁciency on photosynthesis and antioxidant systems in rice and improved salt *** study is beneﬁcial for expanding the understanding of melatonin regulation of crop salt tolerance.

关键词： Melatonin abscisic acid salt stress rice photosynthesis antioxidant system

PICALM-MLLT10融合基因阳性伴多基因突变儿童T淋巴母细胞淋巴瘤/白血病1例

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中华血液学杂志 2024年第4期45卷 410-411页

作者：孙妍姜健孙立荣闫飞宇王玲珍青岛大学附属医院儿童血液肿瘤科青岛266000

患儿,男,12岁。因"发现皮肤出血点7 d,双下肢水肿3 d"于2023年5月5日入青岛大学附属医院。7 d前无明显诱因出现皮肤出血点,以腹部为主,伴全身乏力,无发热、牙龈出血、全身疼痛、视物模糊、全身水肿,未予特殊处理;3 d前出现双下肢水肿,... 详细信息

患儿,男,12岁。因"发现皮肤出血点7 d,双下肢水肿3 d"于2023年5月5日入青岛大学附属医院。7 d前无明显诱因出现皮肤出血点,以腹部为主,伴全身乏力,无发热、牙龈出血、全身疼痛、视物模糊、全身水肿,未予特殊处理;3 d前出现双下肢水肿,伴全身多处皮肤瘀斑及阴囊肿胀,完善血常规:WBC 68.39×10^(9)/L、ANC 9.64×10^(9)/L、RBC 4.01×10^(12)/L、HGB 126 g/L、PLT 117×10^(9)/L。既往史、个人史、家族史无特殊。查体:身高138 cm,体重46 kg,体温36.5℃,心率88次/min,呼吸24次/min,血压114/73 mmHg(1 mmHg=0.133 kPa),神志清,精神欠佳,全身多发瘀斑,浅表淋巴结无肿大,心肺听诊未及异常,腹软,无压痛,肝脏肋下6 cm、剑突下7 cm,脾脏肋下5 cm,均质韧,无触痛,双下肢及足背部凹陷性水肿。

关键词：皮肤出血点凹陷性水肿全身乏力全身水肿皮肤瘀斑大学附属医院王玲双下肢水肿

Energy-Efficient Cooperative Strategy in RF Energy Harvesting Cognitive Radio Network

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Chinese Journal of Electronics 2019年第3期28卷 651-657页

作者： yan feiyu ZHAO Jihong QU Hua XU Xiguang School of Electronic and Information Engineering Xi'an Jiaotong University School of Communication and Information Engineering Xi'an University of Posts and Telecommunications

Energy-efficient cooperative spectrum sharing has become a new trend based on financial and environmental considerations. We focus on a novel energy-efficient cooperative strategy in a Radio frequency(RF) energy harvesting cognitive radio network, where the Secondary user(SU) provides energy supply and relaying assist for the Primary user(PU) in exchange for the transmission opportunities. On the basis of energy and information cooperation, an Energy efficiency(EE)maximization non-convex problem for SU is formulated under the PU’s Quality of service(QoS) requirement and energy-causality constraint. With the aid of Dinkebalch’s method and convex optimization technique, a joint time and power allocation scheme is proposed. Numerical results show that the proposed scheme achieves higher SU’s EE and better PU’s QoS guarantee compared to the scheme in which the SU only provides energy for the PU’s transmission.

关键词： Cognitive radio network Radio frequency(RF) energy harvesting Cooperative communication Energy efficiency Resource management

Energy-Efficient Outage Capacity in Sensing-Based Spectrum Sharing Cognitive Radio Networks

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Chinese Journal of Electronics 2018年第6期27卷 1271-1276页

Energy efficiency(EE) is an important metric for a Cognitive radio network(CRN). We focus on the EE maximization problem in a sensing-based spectrum sharing CRN for delay-sensitive applications. With the aid of one-dimension exhaustive search, fractional programming and Lagrange duality method, two energy-efficient optimal sensing time and power allocation policies are derived with the consideration of Average/Peak transmit power(ATP/PTP) constraints and Average interference power(AIP) constraints, respectively. Simulation results show that the proposed policies can achieve higher EE compared to the conventional spectrum sharing schemes.

关键词： Cognitive radio network(CRN) Energy efficiency(EE) Sensing-based spectrum sharing Power allocation

“岗课赛证”视域下职业院校育人策略及其效果评估——以计算机网络技术专业为例

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黑龙江科学 2024年第15期15卷 114-116页

作者：燕飞宇刘妍君文际琼常德科技职业技术学院湖南常德415000

以“岗课赛证”为主线,在该视域下以职业院校的育人发展为重点,以计算机网络技术专业在校学生为调研对象设计相关问卷,以问卷的结果为基础运用描述性统计分析与相关性分析等统计分析方法研究“岗课赛证”视域下的育人效果。研究结果显示... 详细信息

以“岗课赛证”为主线,在该视域下以职业院校的育人发展为重点,以计算机网络技术专业在校学生为调研对象设计相关问卷,以问卷的结果为基础运用描述性统计分析与相关性分析等统计分析方法研究“岗课赛证”视域下的育人效果。研究结果显示,“岗课赛证”视域下职业院校在职业或学科竞赛育人方面效果有待提升,大部分学生希望职业院校对实践教学与竞赛组织两方面育人策略进行完善。基于此,提出加强对竞赛的组织与宣传,完善人才培养体系,加强对“岗课赛证”的宣传等策略,以期提升学生对“岗课赛证”的认知水平,进一步提高职业院校应用型人才的培养质量。

关键词：岗课赛证职业院校育人策略育人效果计算机网络技术专业

抽水蓄能电站回水排气管道能量特性及流动特性研究

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水电与抽水蓄能 2024年第3期10卷 28-35页

作者：林靖涛于洋杨春霞饶天华闫飞宇河海大学能源与电气学院江苏省南京市211100 中水东北勘测设计研究有限责任公司吉林省长春市130021

当抽水蓄能电站在调相工况结束时,对转轮室中的高压气体进行排气的过程中经常会出现机械振动造成损坏厂房设备的情况。以仙居抽水蓄能电站回水排气系统模型为基础,借助流体计算软件Ansys Fluent,以抽水蓄能电站回水排气系统总管的直径... 详细信息

当抽水蓄能电站在调相工况结束时,对转轮室中的高压气体进行排气的过程中经常会出现机械振动造成损坏厂房设备的情况。以仙居抽水蓄能电站回水排气系统模型为基础,借助流体计算软件Ansys Fluent,以抽水蓄能电站回水排气系统总管的直径为单一变量,对排气系统的流场特点和管道内流场能量特性、流动特性进行研究,揭示排气总管在不同直径时气体运动特点的变化,并分析流场各处截面的气体运动特征参数,得出气体沿管道的能量变化特征。结果表明:随着直径的增加,气体运动损耗的能量逐渐增加;排气流量并不是随着管道直径的增大而一直增大,当总管直径增加到一定值后,管道流量不会出现明显变化。

关键词：抽水蓄能电站回水排气系统总管直径能量特性数值模拟

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An Overview of Sequential Approximation in Topology Optimization of Continuum Structure

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Computer Modeling in Engineering & Sciences 2024年第4期139卷 43-67页

作者： Kai Long Ayesha Saeed Jinhua Zhang Yara Diaeldin feiyu Lu Tao Tao Yuhua Li Pengwen Sun Jinshun yan State Key Laboratory of Alternate Electrical Power Systemwith Renewable Energy Sources North China Electric Power UniversityBeijing102206China Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing100124China New Energy and Energy Storage Division China Southern Power Grid Technology Co.Ltd.Guangzhou510080China School of Mechanical Engineering Inner Mongolia University of TechnologyHohhot010051China College of Energy and Power Engineering Inner Mongolia University of TechnologyHohhot010051China

This paper offers an extensive overview of the utilization of sequential approximate optimization approaches in the context of numerically simulated large-scale continuum *** structures,commonly encountered in engineering applications,often involve complex objective and constraint functions that cannot be readily expressed as explicit functions of the design *** a result,sequential approximation techniques have emerged as the preferred strategy for addressing a wide array of topology optimization *** the past several decades,topology optimization methods have been advanced remarkably and successfully applied to solve engineering problems incorporating diverse physical *** comparison to the large-scale equation solution,sensitivity analysis,graphics post-processing,etc.,the progress of the sequential approximation functions and their corresponding optimizersmake sluggish ***,particularly novices,pay special attention to their difficulties with a particular ***,this paper provides an overview of sequential approximation functions,related literature on topology optimization methods,and their *** from optimality criteria and sequential linear programming,the other sequential approximate optimizations are introduced by employing Taylor expansion and intervening *** addition,recent advancements have led to the emergence of approaches such as Augmented Lagrange,sequential approximate integer,and non-gradient approximation are also *** highlighting real-world applications and case studies,the paper not only demonstrates the practical relevance of these methods but also underscores the need for continued exploration in this ***,to provide a comprehensive overview,this paper offers several novel developments that aim to illuminate potential directions for future research.

关键词： Topology optimization sequential approximate optimization convex linearization method ofmoving asymptotes sequential quadratic programming

基于Bagging神经网络集成的燃料电池性能预测方法

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中国科学：技术科学 2019年第4期49卷 391-401页

作者：闫飞宇李伟卓杨卫卫何雅玲西安交通大学能源与动力工程学院西安710049

利用三维质子交换膜燃料电池数学模型模拟研究了电池流道进、出口高度对电池性能的影响,然后将数值模拟结果作为神经网络模型的训练数据.以流道进、出口高度和电池电压值作为输入变量,以电池电流密度作为输出变量,建立了3层反向传播神... 详细信息

利用三维质子交换膜燃料电池数学模型模拟研究了电池流道进、出口高度对电池性能的影响,然后将数值模拟结果作为神经网络模型的训练数据.以流道进、出口高度和电池电压值作为输入变量,以电池电流密度作为输出变量,建立了3层反向传播神经网络模型;然后利用Bagging集成学习方法对神经网络模型进行集成,构建了燃料电池性能预测方法.研究发现:与单一神经网络模型相比, Bagging神经网络集成模型预测精度更高,且所需模型训练数据量更少.此外对于超出训练数据以外的情形, Bagging神经网络集成模型仍然能够准确地预测燃料电池的性能,且精度良好,表明Bagging神经网络集成模型的鲁棒性较好,可用于更宽工况范围内燃料电池性能的快速预测.

关键词：质子交换膜燃料电池 BP神经网络 Bagging 数值模拟性能预测

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合作认知无线网络中能效最优资源分配

电子与信息学报 2018年第5期40卷 1024-1030页

作者：曲桦赵永强赵季红闫飞宇徐西光西安交通大学电信学院西安710049 西安邮电大学通信与信息工程学院西安710061

针对能量受限的合作认知网络,该文研究在保证主用户服务质量要求下,认知用户能量效率最大化问题。认知用户利用信能同传技术接收主用户信号,并采用解码转发协议协助主用户通信。基于分式规划和引入辅助变量将原始非凸问题转换为凸优化... 详细信息

针对能量受限的合作认知网络,该文研究在保证主用户服务质量要求下,认知用户能量效率最大化问题。认知用户利用信能同传技术接收主用户信号,并采用解码转发协议协助主用户通信。基于分式规划和引入辅助变量将原始非凸问题转换为凸优化问题进行求解,并提出一种迭代的资源分配算法。仿真结果表明,所提算法能够快速收敛于最优解。与能量合作方案相比,该文所采用方案能量效率显著提高,同时能更好地保证主用户服务质量要求。

关键词：合作认知网络能量效率信能同传凸优化

Towards Data-Driving Multi-View Evaluation Framework for Scratch

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Tsinghua Science and Technology 2024年第2期29卷 517-528页

作者： Xiaolin Chai yan Sun yan Gao Department of Computer Science Beijing University of Posts and TelecommunicationBeijing 100876China Intellectual Property Institute Shandong Polytechnic CollegeJining 272067China

As one of the most popular visual programming languages,Scratch has a lot of evaluation around *** evaluation can help programmers understand their projects *** the same time,it can also provide a reference for them to browse other projects in the online *** of the existing evaluations on Scratch are carried from three perspectives:Computational Thinking(CT)ability,visual presentation aesthetics,and code *** them,the assessment of CT and code quality is mainly carried out from the program script,while the evaluation of visual aesthetics is analyzed from the perspective of image sequences generated by project *** single-view evaluation focuses on the performance of a program in a certain aspect and is *** this paper,we propose a multi-view evaluation framework to integrate various evaluations using different *** quantitatively analyze the assessment of different views driven by *** with overall evaluations that represent human opinions,we analyze their differences and *** experiments,we determine the weights of different integration policies,the proposed multi-view evaluation method can generate evaluation results similar to human opinions.

关键词： Scratch Computational Thinking(CT) visual aesthetic static analysis integration policy machine learning