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Long Campaign of BF with Overheating-Free Cooling Stave

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Journal of Iron and Steel Research International 2003年第3期10卷 1-5页

作者： CHENG su sen YANG Tian jun CANG Da qiang University of Science and Technology Beijing

It is found that strong basic oxides including Li 2O, Na 2O, K 2O and BaO, which are used to replace a part of CaO in CaO based fluxes, can lower the melting point and the viscosity and enhance the dephosphorizing... 详细信息

关键词： strong basic oxide CaO based flux melting point viscosity dephosphorizing ability

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SKIP: an efficient search mechanism in unstructured P2P networks

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The Journal of China Universities of Posts and Telecommunications 2010年第5期17卷 64-71页

作者： SHEN Wen-wu su sen SHUANG Kai YANG Fang-chun State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China

Search efficiency and accuracy of resource are important considerations for search algorithm in peer-to-peer （P2P） *** search algorithms use flooding among neighbor nodes to search relevant ***,this usually causes great amount of redundant messages,which results in high search costs and low search *** this paper,we use vector space model （VSM） and relevance ranking algorithms to construct overlay network,and a novel search mechanism search with K-iteration preference （SKIP） based on semantic group for P2P networks is proposed to efficiently solve these *** key idea of SKIP is to reorder the semantic neighbors of nodes according to relevant scores and to utilize preference selection during the process of *** analysis and implement the scheme and reveal that the SKIP provides a low overhead on topology maintenance,which can be effectively used in P2P searching and verify it outperformance in higher precision and lower search cost by comparing with current semantic-based searching mechanism gnutella-like efficient searching system （GES）.

关键词： K-iteration preference SKIP P2P networks

Exploration of Influential People for Viral Marketing

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China Communications 2018年第5期15卷 138-148页

作者： Muhammad Azam Zia Zhongbao Zhang Liutong Chen Muhammad Hashim sen su State key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsNo.10 Xitucheng RoadBeijing 100876China Department of Computer Science University of AgricultureFaisalabadPakistan Department of Management Sciences National Textile UniversityFaisalabadPakistan

Exploration of influential people is really a hot issue for effective viral marketing these days. Prior studies overlooked to consider the influence of interaction between users and the authority of users during information dissemination. In this article, we proposed an innovative concept by employing communication strength and authority in order to explore the influential people. First, we calculated communication strength by three kinds of actions including retweets, comments and mentions. Second, we deliberated authority metric by employing total times getting re-tweeted, number of tweets and followers of a user. Then, we propose a novel algorithm called Influential People Label Propagation Algorithm(IPLPA) that considers the proposed metric to explore the influential people in micro-blog networks. We performed extensive experiments to measure the influence and rank of each person within micro-blog network. The comparative study presents that IPLPA depicted effective people while baseline algorithms retrieved low influenced people at top rank. Additionally, influence dissemination also measured for obtained influential people in order to validate proposed concept. The findings of this study would be useful for viral marketing and advertisement campaigns.

关键词： micro-blog network communication strength authority IPLPA

ComRank： Joint Weight Technique for the Identification of Influential Communities

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China Communications 2017年第4期14卷 101-110页

作者： Muhammad Azam Zia Zhongbao Zhang Ximing Li Haseeb Ahmad sen su State key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

Recently, the community analysis has seen enormous research advancements in the field of social networks. A large amount of the current studies put forward different models and algorithms about most influential people. However, there is little work to shed light on how to rank communities while considering their levels that are determined by the quality of their published contents. In this paper, we propose solution for measuring the influence of communities and ranking them by considering joint weight composed of internal and external influence of communities. To address this issue, we design a novel algorithm called Com Rank: a modification of Page Rank, which considers the joint weight in order to identify impact of each community and ranking them. We use real-world data trace in citation network and perform extensive experiments to evaluate our proposed algorithm. The comparative results depict significant improvements by our algorithm in community ranking due to the inclusion of proposed weighting feature.

关键词： online social networks community rank citation network Page Rank influence

基于C4.5决策树算法构建学生画像模型的研究与实现

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长江信息通信 2024年第9期37卷 68-70,98页

作者：代洪伟梁文栊苏森陈剑炜广西大学计算机与电子信息学院广西南宁530000

近年来,随着大数据分析技术的发展,用户画像技术日趋成熟,挖掘数据中的隐藏信息已经成了研究热门。文章参考用户画像技术,提出了一种基于C4.5决策树算法的学生画像建模方法。文章以广西大学计算机与电子信息学院的本科生为研究样本,搜... 详细信息

近年来,随着大数据分析技术的发展,用户画像技术日趋成熟,挖掘数据中的隐藏信息已经成了研究热门。文章参考用户画像技术,提出了一种基于C4.5决策树算法的学生画像建模方法。文章以广西大学计算机与电子信息学院的本科生为研究样本,搜集学生们的行为数据制作数据集。该模型采用平均值填充法进行数据预处理,并将清洗完毕的数据投入训练模型进行调参,从而获得最后的测试模型。该模型能够按照三级标签体系将学生分类,准确率达到62.3%。最后该文对研究结果进行了分析总结,确定了未来的发展方向。

关键词：大数据分析用户画像学生画像 C4.5决策树算法标签体系学生分类

Numerical Simulation of Fluid Flow in Blast Furnace Hearth

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Journal of Iron and Steel Research International 2005年第6期12卷 5-7页

作者： ZHAO Min-ge suN Tian-liang CHENG su-sen GAO Zheng-kai Capital Steel Group Co Beijing 100041 China University of Science and Technology Beijing Beijing 100083 China

The liquid flow in blast furnace hearth can result in the erosion of hearth. To prolong the campaign life of blast furnace, the effects of coke bed structure, coke porosity and deepness of taphole on liquid flow in hearth were studied by re model under different conditions. The results show that with the decrease of coke porosity, the peripheral flow is enhanced. Moreover, the existence of narrow coke free zone and the deepness reduction of taphole can increase the flowability on the bottom of hearth.

关键词： blast furnace hearth flow field numerical simulation

Uninet SS:支持网络融合和网络开放的软交换系统

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计算机工程 2006年第17期32卷 172-174页

作者：苏森北京邮电大学网络与交换技术国家重点实验室北京100876

讨论了支持网络融合和网络开放的软交换系统的特点,提出了一个层次化的软交换体系结构,包括协议适配子系统、呼叫控制子系统、业务适配子系统和OAM子系统。分析了层次化的呼叫控制模型、基于统一消息的协议适配方法和可扩展的ParlayAPI... 详细信息

讨论了支持网络融合和网络开放的软交换系统的特点,提出了一个层次化的软交换体系结构,包括协议适配子系统、呼叫控制子系统、业务适配子系统和OAM子系统。分析了层次化的呼叫控制模型、基于统一消息的协议适配方法和可扩展的ParlayAPI实现方案。测试结果表明了该系统能够满足国家标准规定的性能要求。

关键词：网络融合网络开放软交换协议适配呼叫模型

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基于强度和磁密的永磁电机转子结构优化

微电机 2024年第2期57卷 13-17,49页

作者：黄漪帅梁志宏李飞王海波苏森国家能源集团宁夏电力有限公司银川750011 国家能源集团贵州电力有限公司贵阳550081 国家能源集团国能宁夏灵武发电有限公司宁夏灵武751400 华驰动能(北京)科技有限公司北京101111

永磁电机转子作为储能飞轮的核心部件,需要具有较高的磁性能同时要满足材料结构强度要求。本文针对此问题,采用了综合评分法来衡量电机转子的电磁特性和力学特性。通过五因素四水平16项组合的优化方案,调整电机转子铁心结构参数,求出了... 详细信息

永磁电机转子作为储能飞轮的核心部件,需要具有较高的磁性能同时要满足材料结构强度要求。本文针对此问题,采用了综合评分法来衡量电机转子的电磁特性和力学特性。通过五因素四水平16项组合的优化方案,调整电机转子铁心结构参数,求出了因素主次顺序和最优组合。试验结果表明,在电机气隙磁密的基波幅值不变的情况下,转子最大应力值由原来的407.8 MPa,降低到了325.9 MPa,安全系数达到了1.227倍,满足了电机转子强度的设计要求。本研究提出了一种基于强度和气隙磁密的永磁电机转子结构优化方法,通过综合评分法实现了电机转子的气隙磁密的基波幅值与最大应力的综合指标的最优化。该方法可以解决大功率储能飞轮高速电机转子结构强度问题,提供了理论方法解决方案。

关键词：电机转子结构优化优化试验气隙磁密最大应力

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大功率永磁盘式电机转子结构强度研究

微电机 2024年第3期57卷 14-18,34页

作者：黄漪帅梁志宏李飞王海波苏森国家能源集团宁夏电力有限公司宁夏银川750011 国家能源集团贵州电力有限公司贵州贵阳550081 国家能源集团国能宁夏灵武发电有限公司宁夏灵武751400 华驰动能(北京)科技有限公司北京101111

本研究针对盘式电机转子在高速旋转时受到离心力破坏的问题,设计了一种基于储能飞轮转子结构的盘式电机转子结构。通过对比分析传统盘式电机转子结构强度,提出了利用储能飞轮转子材料高强度的特性来抵消电机盘与磁钢产生的离心力的方法... 详细信息

本研究针对盘式电机转子在高速旋转时受到离心力破坏的问题,设计了一种基于储能飞轮转子结构的盘式电机转子结构。通过对比分析传统盘式电机转子结构强度,提出了利用储能飞轮转子材料高强度的特性来抵消电机盘与磁钢产生的离心力的方法,从而提高了盘式电机转子能够承受的最大转速上限。通过对不同转速下新式盘式电机转子结构的强度分析,得出转速与电机盘和转子的最大应力曲线图。结果表明,新式盘式电机转子结构理论最高转速分别是表贴式结构的4.3倍和内嵌式结构的2.7倍。为了进一步提高新式盘式电机转子结构的性能和可靠性,本文提出了一种新式盘式电机转子结构求解最优过盈量的计算方法。通过对比不同过盈量下静态与额定转速时电机盘与转子的安全系数,求出了过盈量最优值。本研究设计的新式盘式电机转子结构具有较大的实际应用价值,可以为储能飞轮等领域提供一种高性能、高转速的盘式电机转子解决方案。

关键词：盘式电机转子结构强度仿真分析最大应力