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| 1 | An Adaptive Routing Algorithm for Integrated Information Networks显示文摘The integrated information network is a large capacity information network that integrates various communication platforms on the ground, at sea, in the air and in the deep air through the inter-satellite and satellite-ground links to acquire information accurately, process it quickly, and transmit it efficiently. The satellite communication, as an important part of integrated information networks, is one of main approaches to acquire, process and distribute communication information and resources. In this paper, based on current researches of the satellite communication network, we put forward a 3-layer satellite communication network model based on the Software Defined Network (SDN). Meanwhile, to improve current routing policies of the Low Earth Orbit (LEO) satellite communication network, we put forward an Adaptive Routing Algorithm (ARA) to sustain the shortest satellite communication link. Experiment results show that the proposed method can effectively reduce link distance and communication delay, and realize adaptive path planning. | Feng Wang Dingde Jiang Sheng Qi | 2019 | China Communications2019，16，7： | 10 |
| 2 | Cytopathological evaluations combined RNA and protein analyses on defined cell regions using single frozen tissue block显示文摘The co-existence of multiple cell components in tissue samples is the main obstacle for precise molecular evaluation on defined cell types. Based on morphological examination, we developed an efficient approach for paralleled RNA and protein isolations from an identical histological region in frozen tissue section.The RNA and protein samples prepared were sufficient for RT-PCR and Western blot analyses, and the results obtained were well coincident each other as well as with the corresponding parameters revealed from immunohistochemical examinations. By this way, the sampling problem caused by cell-cross contamination can be largely avoided, committing the experimental data more specific to a defined cell type. These novel methods thus allow us to use single tissue block for a comprehensive study by integration of conventional cytological evaluations with nucleic acid and protein analyses. | HONG LI, XIAO YAN CHEN, QING You KONG, JIA LIULaboratory of Cell Biology and Molecular Genetics,College of Basic Medical Sciences, Dalian Medical University, Dalian 116027, China | 2002 | Cell Research2002，12，2： | 10 |
| 3 | 一株产紫杉醇的曼地亚红豆杉内生真菌的分离及鉴定(摘要)(英文)显示文摘[目的]分离并鉴定1株产紫杉醇的曼地亚红豆杉内的内生真菌。[方法]从曼地亚红豆杉树皮内表皮中分离得到32株内生真菌,并通过高效液相色谱法检测其发酵产物。[结果]筛选获得1株可以产紫杉醇的内生真菌M57,其紫杉醇产量为45~50μg/L,并通过对M57菌落的形态学观察以及18S rDNA序列分析初步将其鉴定为根霉属(Rhizopus)真菌。[结论]该菌株的发现为微生物发酵法生产紫杉醇提供了具有潜在应用价值新的菌种。 | 李佟清 张志建 张鹏 王春兰 刘博 刘婷婷 付春华 余龙江 | 2010 | Agricultural Science & Technology2010，11，5： | 8 |
| 4 | 软件定义世界,数据驱动未来显示文摘软件与电驱动世界的进程惊人地相似,尽管路径有所不同。软件与电的高度相似是因为人类认知能力进化是有限的,人类对新技术的认知是循序渐进的,新技术的渗透是一个持续推进的过程。 | 陈新河 | 2014 | 软件产业与工程2014，，1： | 7 |
| 5 | 两个互素因子链上的幂GCD矩阵的行列式与幂LCM矩阵的行列式的整除性显示文摘设S={X_1,X_2,…,X_n}是由n个不同的正整数组成的集合,并设整数a≥1.如果n阶矩阵的第i行j列元素是S中元素X_i和X_j的最大公因子的a次幂(X_i,x_j)~a,则称该矩阵是定义在S上的a次幂最大公因子(GCD)矩阵,用(S^a)表示.类似可定义a次幂LCM矩阵[S^a].作者证明了:设S由两个互素的因子链构成并且1∈S.若a|d,则det(S^a)|det(S^a),det[S^a]|det[S^b]和det(S^b)|det[S^b].若S由两个不互素的因子链构成,则如此分解定理不成立. | 谭千蓉 林宗兵 刘浏 | 2009 | 四川大学学报(自然科学版)2009，46，6： | 6 |
| 6 | 一种新型的LTE-A网络切换认证协议显示文摘针对典型蜂窝网络LTE-A网络的切换认证问题,本文通过引入SDN(Software Defined Network,软件定义网络),提出了软件定义LTE-A异构网络架构,在中心控制器中共享UE(User Equipment,用户设备)的安全上下文信息,以实现简化切换认证过程,提高认证效率的目标.中心控制器的加入,使蜂窝与核心网通信时需要增加一次信令开销,而LTE-A网络的标准切换认证方法过于复杂,应用在软件定义LTE-A异构网络中,会产生较多的信令开销.基于代理签名的切换认证方法,使UE在验证身份时不用经过核心网,减少了信令开销.在安全性相同的情况下,基于椭圆曲线的加密体系比基于RSA的加密体系计算量更小,有利于减少中心控制器的计算压力.本文采用椭圆曲线代理签名方法,提出了一种新型的切换认证协议,并运用着色Petri网进行建模和仿真分析.仿真结果表明,该协议是有效的,且安全性更高. | 陈昕 宋亚鹏 刘志强 | 2017 | 电子学报2017，45，2： | 6 |
| 7 | An SDN-Based Publish/Subscribe-Enabled Communication Platform for IoT Services显示文摘Publish/subscribe paradigm paves a way to integrate and serve many scalable, inter-operable Internet of Things(IoT) applications. The increasing IoT applications require new properties of publish/subscribe communication model, for example, strict quality of service(Qo S) guarantees, supporting a large number of widely distributed devices, etc. Software Defined Networking(SDN) enables personalized programming and individualized QoS supports for different applications. The combination of the two will have a good prospect. In this paper, we present an IoT-oriented communication platform which combines the publish/subscribe paradigm with SDN, aiming at establishing an IoT ecosystem to facilitate IoT services/applications accessing internet. We design the interaction logic of topic-based publish/subscribe middleware, and describe the setup and maintenance of topology information as well as event routing in detail, considering the characteristics of SDN. Finally, we exemplify its practicability with a deployed District Heating Control and Information Service System(DHCISS) and validity the effectiveness with some experiments. | Yali Wang Yang Zhang Junliang Chen | 2018 | China Communications2018，15，1： | 6 |
| 8 | An Effective SDN Controller Scheduling Method to Defence DDoS Attacks显示文摘Distributed Denial of Service(DDoS)attack is a difficult issue which needs to be addressed in Software defined networking(SDN). In order to help the controller to weather out the DDoS attack, an efficient controller scheduling method is proposed. The proposed controller scheduling method uses the normalized waiting time, length and extent of the switch being attacked to choose the request that needs to be processed by the controller. The evaluation results validate that compared with the polling based controller scheduling method, the proposed one can significantly reduce the connection failure ratio and delay. | LI Saifei CUI Yunhe NI Yongfeng YAN Lianshan | 2019 | Chinese Journal of Electronics2019，28，2： | 5 |
| 9 | Blockchain-Based Secure Distributed Control for Software Defined Optical Networking显示文摘Software defined optical networking(SDON)is a critical technology for the next generation network with the advantages of programmable control and etc.As one of the key issues of SDON,the security of control plane has also received extensive attention,especially in certain network scenarios with high security requirement.Due to the existence of vulnerabilities and heavy overhead,the existing firewalls and distributed control technologies cannot solve the control plane security problem well.In this paper,we propose a distributed control architecture for SDON using the blockchain technique(BlockCtrl).The proposed BlockCtrl model introduces the advantages of blockchain into SDON to achieve a high-efficiency fault tolerant control.We have evaluated the performance of our proposed architecture and compared it to the existing models with respect to various metrics including processing rate,recovery latency and etc.The numerical results show that the BlockCtrl is capable of attacks detection and fault tolerant control in SDON with high performance on resource utilization and service correlation. | Hui Yang Yongshen Liang Qiuyan Yao Shaoyong Guo Ao Yu Jie Zhang | 2019 | China Communications2019，16，6： | 5 |
| 10 | Design and Implementation of a TDD-Based 128-Antenna Massive MIMO Prototype System显示文摘Owing to the dramatic mobile IP growth,the emerging Internet of Things,and cloud-based applications,wireless networking is witnessing a paradigm shift.By fully exploiting spatial degrees of freedom,massive multiple-input-multiple-output(MIMO) systems promise significant gains in data rates and link reliability.Although the research community has recognized the theoretical benefits of these systems,building the hardware of such complex systems is a challenge in practice.This paper presents a time division duplex(TDD)-based 128-antenna massive MIMO prototype system from theory to reality.First,an analytical signal model is provided to facilitate the setup of a feasible massive MIMO prototype system.Second,a link-level simulation consistent with practical TDDbased massive MIMO systems is conducted to guide and validate the massive MIMO system design.We design and implement the TDDbased 128-antenna massive MIMO prototype system with the guidelines obtained from the link-level simulation.Uplink real-time video transmission and downlink data transmission under the configuration of multiple single-antenna users are achieved.Comparisons withstate-of-the-art prototypes demonstrate the advantages of the proposed system in terms of antenna number,bandwidth,latency,and throughput.The proposed system is also equipped with scalability,which makes the system applicable to a wide range of massive scenarios. | Xi Yang Wenjun Lu Ning Wang Karl Nieman Chao-Kai Wen Chuan Zhang Shi Jin Xiaomin Mu Ian Wong Yongming Huang Xiaohu You | 2017 | China Communications2017，14，12： | 3 |
| 11 | Design and Implementation of an SDN-Enabled DNS Security Framework显示文摘The Domain Name System(DNS) is suffering from the vulnerabilities exploited to launch the cache poisoning attack. Inspired by biodiversity, we design and implement a non-intrusive and tolerant secure architecture Multi-DNS(MDNS) to deal with it. MDNS consists of Scheduling Proxy and DNS server pool with heterogeneous DNSs in it. And the Scheduling Proxy dynamically schedules m DNSs to provide service in parallel and adopts the vote results from majority of DNSs to decide valid replies. And benefit from the centralized control of software defined networking(SDN), we implement a proof of concept for it. Evaluation results prove the validity and availability of MDNS and its intrusion/fault tolerance, while the average delay can be controlled in 0.3s. | Zhenpeng Wang Hongchao Hu Guozhen Cheng | 2019 | China Communications2019，16，2： | 3 |
| 12 | CATH: an effective method for detecting denial-of-service attacks in software defined networks显示文摘Software defined networks(SDNs) are innovative network frameworks that have recently received wide attention. Their programming flexibility facilitates automatic network management and control, thus mitigating existing issues in the traditional network architecture. However, SDNs face several security risks,in particular denial-of-service(DoS) attacks, the most common and serious network attacks. To address such a threat, an SDN-DoS attack detection method is proposed based on fusing multiple flow features for describing the network catastrophe between the normal and the attack state. Several statistic attributes of SDN flow information are first chosen as detection features; subsequently, the cusp model is used to establish a catastrophe equilibrium surface for SDN states. After being trained, the cusp catastrophe model can be utilized to infer whether an SDN is under DoS attack. The experimental results demonstrate that the method can effectively and timely perceive SDN-DoS attacks, not only in simple networks but also in larger enterprise networks. | Yi GUO Fu MIAO Liancheng ZHANG Yu WANG | 2019 | Science China(Information Sciences)2019，62，3： | 2 |
| 13 | 关于Benkart-Zlemanov相交矩阵李代数显示文摘Benkart和Zelmanov在研究非simply-laced有限根分次李代数的结构和分类时,对多重仿射化定义了一种李代数.其目的是为了推广复半单李代数到扩大仿射李代数的情形.作者证明了他们定义的多重仿射李代数实际上是复半单李代数.这就意味着他们的这一目的没有达到. | 徐芒 方颖珏 | 2009 | 四川大学学报(自然科学版)2009，46，6： | 2 |
| 14 | Software defined industrial network architecture for edge computing offloading显示文摘The integration of the Internet and the traditional manufacturing industry makes the industrial Internet of things(IIoT) as a popular research topic. However, traditional industrial networks continue to face challenges of resource management and limited raw data storage and computation capacity. A novel software defined industrial network(SDIN) architecture was proposed to address the existing drawbacks in IIoT such as resource utilization, data processing and storage, and system compatibility. The architecture is developed based on the software defined network(SDN) architecture, combining hierarchical cloud and fog computing and content-aware caching technologies. Based on the SDIN architecture, two types of edge computing strategies in industrial applications are discussed. Different scenarios and service requirements are considered. The simulation results confirm that the SDIN architecture is feasible and effective in the application of edge computing offloading. | Xu Fangmin Ye Huanyu Cui Shaohua Zhao Chenglin Yao Haipeng | 2019 | The Journal of China Universities of Posts and Telecommunications2019，26，1： | 2 |
| 15 | IP+光在智慧淮安城域网建设中的应用研究显示文摘智慧城市相关业务的爆发性增长,使数据业务呈现爆炸式增长,城域网承载面临巨大压力。为了解决城域网骨干网络带宽和资源使用不均衡问题,提出在淮安智慧城市建设中,城域网采用先进的IP+光网络技术方案实现流量均衡,解决业务不均衡导致的带宽浪费。这不但降低了建设成本,而且提高了网络效率,提升了智慧城市骨干网络资源的利用效率,节省了投资,增加了收益,增强了网络可靠性,减轻了运维压力。 | 孟祥迪 牟勇 | 2018 | 通信技术2018，51，7： | 2 |
| 16 | Implicit Shape Reconstruction of Unorganized Points Using PDE-Based Deformable 3D Manifolds显示文摘In this work we consider the problem of shape reconstruction from an unorganized data set which has many important applications in medical imaging, scientific computing, reverse engineering and geometric modelling. The reconstructed surface is obtained by continuously deforming an initial surface following the Partial Differential Equation (PDE)-based diffusion model derived by a minimal volume-like variational formulation. The evolution is driven both by the distance from the data set and by the curvature analytically computed by it. The distance function is computed by implicit local interpolants defined in terms of radial basis functions. Space discretization of the PDE model is obtained by finite co-volume schemes and semi-implicit approach is used in time/scale. The use of a level set method for the numerical computation of the surface reconstruction allows us to handle complex geometry and even changing topology,without the need of user-interaction. Numerical examples demonstrate the ability of the proposed method to produce high quality reconstructions. Moreover, we show the effectiveness of the new approach to solve hole filling problems and Boolean operations between different data sets. | Elena Franchini Serena Morigi Fiorella Sgallari | 2010 | Numerical Mathematics(Theory,Methods and Applications)2010，3，4： | 2 |
| 17 | Microstructural evolution of a steam-turbine rotor subjected to a water-quenching process: numerical simulation and experimental verification显示文摘Cr-Ni-Mo-V steam-turbine rotors have been widely used as key components in power plants. In this study, a coupled thermomechano-metallurgical model was proposed to simulate the phase transformation and transformation-induced plasticity (TRIP) of a 30Cr2Ni4MoV steam-turbine rotor during a water-quenching process, which was solved using a user defined material mechanical behavior (UMAT) subroutine in ABAQUS. The thermal dilation, heat generation from plastic work, transformation latent heat, phase transformation kinetics, and TRIP were considered in the model. The thermomechanical portion of the model was used to predict the evolution of temperature, strain, and residual stress in the rotor. The phase transformation that occurred during the quenching process was considered. Constitutive models of phase transformations (austenite to pearlite, austenite to bainite, and austenite to martensite) and TRIP were developed. Experimental data were adopted and compared with the predicted results to verify the accuracy of the model. This demonstrates that the model is reliable and accurate. Then, the model was utilized to predict the temperature variation, dimensional change, minimum austenitization time, residual stress, TRIP, and volume fractions of each phase. It is concluded that this model can be a useful computational tool in the design of heat-treatment routines of steam-turbine rotors. | Chuan Wu Qing-Ling Meng | 2019 | Advances in Manufacturing2019，7，1： | 2 |
| 18 | 基于Hadoop的固网宽带终端识别技术研究和实现显示文摘随着大数据时代的来临,大数据在各个行业应用越来越广泛。大数据在运营商行业的应用也很普遍,但同时也遇到了很多技术问题,其中家庭画像的塑造是运营商大数据的一个核心问题。如何提取和识别固网宽带下的终端类型是一个有待解决的问题。不像移动网,固网宽带由于没有信令通道,所以不携带任何准确的终端信息,因而对固网下的终端类型识别比较困难。传统方法都是采用解析和匹配HTTP GET报文中的UA字段进行识别。但这种方法由于UA的非标准化,以及终端数量和种类众多的缘故而导致终端类型的识别准确率低下。文中采用Hadoop框架,利用Hive中UDF的方法,结合分布式爬虫获取终端库,可以更加快速准确地识别出用户上网终端信息。实验结果表明,终端识别准确率可以达到92%以上,相比传统方法有了大幅提升。 | 范孟可 王攀 | 2017 | 计算机技术与发展2017，27，11： | 2 |
| 19 | MTSS: multi-path traffic scheduling mechanism based on SDN显示文摘Large-scale and diverse businesses based on the cloud computing platform bring the heavy network traffic to cloud data centers.However,the unbalanced workload of cloud data center network easily leads to the network congestion,the low resource utilization rate,the long delay,the low reliability,and the low throughput.In order to improve the utilization efficiency and the quality of services(QoS)of cloud system,especially to solve the problem of network congestion,we propose MTSS,a multi-path traffic scheduling mechanism based on software defined networking(SDN).MTSS utilizes the data flow scheduling flexibility of SDN and the multi-path feature of the fat-tree structure to improve the traffic balance of the cloud data center network.A heuristic traffic balancing algorithm is presented for MTSS,which periodically monitors the network link and dynamically adjusts the traffic on the heavy link to achieve programmable data forwarding and load balancing.The experimental results show that MTSS outperforms equal-cost multi-path protocol(ECMP),by effectively reducing the packet loss rate and delay.In addition,MTSS improves the utilization efficiency,the reliability and the throughput rate of the cloud data center network. | XU Xiaolong CHEN Yun HU Liuyun KUMAR Anup | 2019 | Journal of Systems Engineering and Electronics2019，30，5： | 2 |
| 20 | 可编程的网络——软件定义网络显示文摘本文描述了软件定义网络(SDN)的需求、概念及关键技术,重点分析了SDN的网络结构、OpenFlow模型和OpenFlow交换机。最后,讨论了SDN的应用。 | 吴承治 罗正华 | 2013 | 现代传输2013，，4： | 1 |
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