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An Adaptive Congestion Control Optimization Strategy in SDN-Based Data Centers

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Computers, Materials & Continua 2024年第11期81卷 2709-2726页

作者： jinlin xu Wansu Pan Haibo Tan Longle Cheng Xiaofeng Li Hefei Institutes of Physical Science Chinese Academy of SciencesHefei230031China University of Science and Technology of China Hefei230026China

The traffic within data centers exhibits bursts and unpredictable *** rapid growth in network traffic has two consequences:it surpasses the inherent capacity of the network’s link bandwidth and creates an imbalanced network ***,persistent overload situations eventually result in network *** Software Defined Network(SDN)technology is employed in data centers as a network architecture to enhance *** paper introduces an adaptive congestion control strategy,named DA-DCTCP,for SDN-based Data *** incorporates Explicit Congestion Notification(ECN)and Round-Trip Time(RTT)to establish congestion awareness and an ECN marking *** mitigate incorrect congestion caused by abrupt flows,an appropriate ECN marking is selected based on the queue length and its growth slope,and the congestion window(CWND)is adjusted by calculating ***,the marking threshold for queue length is continuously adapted using the current queue length of the switch as a parameter to accommodate changes in data *** evaluation conducted through Mininet simulations demonstrates that DA-DCTCP yields advantages in terms of throughput,flow completion time(FCT),latency,and resistance against packet *** benefits contribute to reducing data center congestion,enhancing the stability of data transmission,and improving throughput.

关键词： Data centers SDN TCP congestion control RTT ECN

A Multi-Constraint Path Optimization Scheme Based on Information Fusion in Software Defined Network

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Computers, Materials & Continua 2024年第4期79卷 1399-1418页

作者： jinlin xu Wansu Pan Longle Cheng Haibo Tan Munan Yuan Xiaofeng Li Hefei Institutes of Physical Science Chinese Academy of SciencesHefei230031China University of Science and Technology of China Hefei230026China

The existingmultipath routing in Software Defined Network (SDN) is relatively blind and inefficient, and there is alack of cooperation between the terminal and network sides, making it difficult to achieve dynamic adaptationof service requirements and network resources. To address these issues, we propose a multi-constraint pathoptimization scheme based on information fusion in SDN. The proposed scheme collects network topology andnetwork state information on the network side and computes disjoint paths between end hosts. It uses the FuzzyAnalytic Hierarchy Process (FAHP) to calculate the weight coefficients of multiple constrained parameters andconstructs a composite quality evaluation function for the paths to determine the priority of the disjoint paths. TheSDN controller extracts the service attributes by analyzing the packet header and selects the optimal path for flowrule forwarding. Furthermore, the service attributes are fed back to the path composite quality evaluation function,and the path priority is dynamically adjusted to achieve dynamic adaptation between service requirements andnetwork status. By continuously monitoring and analyzing the service attributes, the scheme can ensure optimalrouting decisions in response to varying network conditions and evolving service demands. The experimentalresults demonstrated that the proposed scheme can effectively improve average throughput and link utilizationwhile meeting the Quality of Service (QoS) requirements of various applications.

关键词： SDN multi-constraint path information fusion FAHP

Prediction and systematic study of protein-protein interaction networks of Leptospira interrogans

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Chinese Science Bulletin 2006年第11期51卷 1296-1305页

作者： SUN Jingchun xu jinlin CAO Jianping LIU Qi GUO Xiaokui SHI Tieliu LI Yixue School of Life Sciences and Technology Shanghai Jiaotong University Shanghai 200240 China Biomedical Engineering School of Life Science & Technology University of Electronic Science and Technology of China Chengdu 610054 China Department of Microbiology and Parasitology Shanghai Jiao Tong University School of Medicine Shanghai 200025 China Bioinformation Center Shanghai Institute for Biological Sciences Chinese Academy of Sciences Shanghai 200031 China

Leptospira interrogans serovar Lai is a pathogenic bacterium that causes a spirochetal zoonosis in humans and some animals. With its complete genome sequence available, it is possible to analyze protein-protein interactions from a whole- genome standpoint. Here we combine four recently developed computational approaches (gene fusion method, gene neighbor method, phylogenetic profiles method, and operon method) to predict protein-pro- tein interaction networks of Leptospira interrogans strain Lai. Through comprehensive analysis on in- teractions among proteins of motility and chemotaxis system, signal transduction, lipopolysaccaride bio- synthesis and a series of proteins related to adhesion and invasion, we provided information for further studying on its pathogenic mechanism. In addition, we also assigned 203 previously uncharacterized proteins with possible functions based on the known functions of its interacting partners. This work is helpful for further investigating L. interrogans strain Lai.

关键词：蛋白质-蛋白质交互作用网络基因融合基因序列系统发育操纵子

Advanced Flexible Carbon‑Based Current Collector for Zinc Storage

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Advanced Fiber Materials 2022年第6期4卷 1500-1510页

作者： Hao Jia Minghui Qiu Chunxia Tang Hongqi Liu jinlin xu Benjamin Tawiah Shou‑xiang Jiang Xiangwu Zhang Key Laboratory of Eco‑Textiles Ministry of EducationJiangnan UniversityWuxiJiangsuPeople’s Republic of China Institute of Textiles and Clothing The Hong Kong Polytechnic UniversityHong KongPeople’s Republic of China Department of Industrial Art(Textiles) Kwame Nkrumah University of Science and TechnologyKumasiGhana Fiber and Polymer Science Program Department of Textile EngineeringChemistry and ScienceWilson College of TextilesNorth Carolina State UniversityRaleighNC 27695‑8301USA

Carbon cloth(CC)-based electrodes have attracted extensive attention for next-generation wearable energy-storage devices due to their excellent electrical conductivity and mechanical ***,the application of conventional CC-based electrodes for zinc(Zn)storage severely hinders Zn ion transport and induces deleterious Zn dendrite growth,resulting in poor electrochemical ***,a novel oxygen plasma-treated carbon cloth(OPCC)is rationally designed as a current collector for flexible hybrid Zn ion supercapacitors(ZISs).The modified interface of OPCC with abundant oxygenated groups enables enhanced electrolyte wettability and uniform superficial electric field distribution.A prolonged working lifespan for Zn electrodeposition is achieved by the OPCC due to the improved interfacial kinetics and homogenized ion *** as-prepared hybrid ZIS also delivers excellent cycling endurance(98.5%capacity retention for 1500 cycles)with outstanding operation stability under various extreme *** facile surface modification strategy provides a new way for developing future flexible electrodes for wearable electronic products.

关键词： Zinc ion supercapacitor Carbon cloth Oxygen plasma treatment Interface kinetics

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我国炼油企业节能潜力分析及技术措施

炼油技术与工程 2006年第4期36卷 47-50页

作者：许金林中国石油化工股份有限公司炼油事业部北京市100029

介绍了我国炼油企业能耗的现状;分析了炼油企业能耗高的原因;指出了我国炼油企业应采取的重点节能技术及措施,如催化裂化装置降低生焦能耗和能量回收技术、加热炉提高热效率技术、装置间热联合和低温热利用技术、蒸汽动力系统优化及凝... 详细信息

介绍了我国炼油企业能耗的现状;分析了炼油企业能耗高的原因;指出了我国炼油企业应采取的重点节能技术及措施,如催化裂化装置降低生焦能耗和能量回收技术、加热炉提高热效率技术、装置间热联合和低温热利用技术、蒸汽动力系统优化及凝结水回收技术、炼厂气燃气发电机组节能技术及热电联产技术、夹点技术优化换热网络及减少用水量等。

关键词：炼油企业节能技术措施

Triple Differential Cross Sections for Electron Impact Ionization of Helium-like Lithium

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原子与分子物理学报 1997年第4期 38-45页

作者： xu jinlin Zhu Xiwen Yan Min Li Jiaomei Chen Yongtong Zhang Zhifei Laboratory of Magnetic Resonance and Atomic and Molecuar Physics, Wuhan Institute of Physics, Chinese Academy of Science Wuhan 430071

ＴｒｉｐｌｅＤｉｆｅｒｅｎｔｉａｌＣｒｏｓＳｅｃｔｉｏｎｓｆｏｒＥｌｅｃｔｒｏｎＩｍｐａｃｔＩｏｎｉｚａｔｉｏｎｏｆＨｅｌｉｕｍ－ｌｉｋｅＬｉｔｈｉｕｍＳｈｉＱｉｃｕｎＣｈｅｎＺｈａｎｇｊｉｎＣｈｅｎＪｉＸｕＫｅｚ... 详细信息

ＴｒｉｐｌｅＤｉｆｅｒｅｎｔｉａｌＣｒｏｓＳｅｃｔｉｏｎｓｆｏｒＥｌｅｃｔｒｏｎＩｍｐａｃｔＩｏｎｉｚａｔｉｏｎｏｆＨｅｌｉｕｍ－ｌｉｋｅＬｉｔｈｉｕｍＳｈｉＱｉｃｕｎＣｈｅｎＺｈａｎｇｊｉｎＣｈｅｎＪｉＸｕＫｅｚｕｎＤｅｐａｒｔｍｅｎｔｏｆＭｏｄ...

关键词： RF Trap Atomic Cluster Ions Selective Storage

土壤侵蚀危险度的计算与影响因子分析——以福建安溪红壤水土流失区为例

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地球信息科学 2009年第5期11卷 577-584页

作者：徐劲林查轩福建师范大学地理研究所福州350007 福建省亚热带资源与环境重点实验室福州350007

随着国家对生态环境的重视和水土保持科学的发展,有关土壤侵蚀危险性评价的研究越来越重要。本文对土壤侵蚀危险度评价的一般方法进行了改进。首先,分析了安溪县各强度等级的土壤侵蚀在高程、坡度、土地利用类型和土壤类型的面积分布情... 详细信息

随着国家对生态环境的重视和水土保持科学的发展,有关土壤侵蚀危险性评价的研究越来越重要。本文对土壤侵蚀危险度评价的一般方法进行了改进。首先,分析了安溪县各强度等级的土壤侵蚀在高程、坡度、土地利用类型和土壤类型的面积分布情况,计算了不同高程带、不同坡度、不同土地利用类型和土壤类型的土壤侵蚀综合指数;然后,以各影响因子的土壤侵蚀综合指数为权重,计算了不同侵蚀影响因子在安溪县各子流域的土壤侵蚀危险度,既避免了权重确定的主观性,又保证了土壤侵蚀危险度的计算适合当地的实际情况,从而明确了各子流域土壤侵蚀发生的可能程度;最后,依据土壤侵蚀危险度和土壤侵蚀强度的分布规律,对整个研究区进行了水土保持分区,提出了治理方向。

关键词：土壤侵蚀危险度影响因子土壤侵蚀综合指数

调频加网视觉噪声检测与降噪方法研究(英文)

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仪器仪表学报 2004年第Z2期25卷 260-264页

作者：徐锦林徐敏西安理工大学西安710048 上海理工大学上海200093

调频网印品的视觉噪声即颗粒性(感),是限制调频网工艺推广和应用的关键问题之一。视觉噪声源自网点分布的无规则,与网点大小、形状变化及网点间距离不均匀有关。为此以点阵数字图像为检测对象,提出网点粘接度、网点周长及网点分布密度... 详细信息

调频网印品的视觉噪声即颗粒性(感),是限制调频网工艺推广和应用的关键问题之一。视觉噪声源自网点分布的无规则,与网点大小、形状变化及网点间距离不均匀有关。为此以点阵数字图像为检测对象,提出网点粘接度、网点周长及网点分布密度均方差等算法,结合付里叶变换分析检测调频网的噪声,指出保持网点大小一致、采用均匀分布和误差扩散相结合的算法,可有效降低调频网印品的视觉噪声。

关键词：调频加网视觉噪声噪声检测降噪

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喷墨印刷平面呈色模型的建立与检验

武汉大学学报（信息科学版） 2006年第9期31卷 822-825页

作者：徐锦林闫小凡徐宏平徐咏驰武汉大学印刷与包装系武汉市珞喻路129号430079 西安理工大学印刷包装工程学院西安市金花南路5号710048

采用插值算法,提出了一种新的平面呈色模型建立方法,实现喷墨印刷中L*a*b*与cmy颜色空间之间的转换,并对转换精度进行了检验分析。本研究通过比较喷墨打印和胶印的平面呈色模型,为在各种印刷方式中建立平面模型提供了成功的范例和切实... 详细信息

采用插值算法,提出了一种新的平面呈色模型建立方法,实现喷墨印刷中L*a*b*与cmy颜色空间之间的转换,并对转换精度进行了检验分析。本研究通过比较喷墨打印和胶印的平面呈色模型,为在各种印刷方式中建立平面模型提供了成功的范例和切实可行的方法。

关键词：平面呈色模型平面方程喷墨印刷