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Biomedical and Environmental Sciences 2020年第1期33卷 48-52页

作者： LIANG Kai WANG Chuan YAN Fei YANG Jun Peng TIAN Meng WANG Ling Shu HOU Xin Guo CHEN Li Department of Endocrinology Qilu Hospital of Shandong UniversityInstitute of Endocrinology and Metabolism DiseaseShandong UniversityKey Laboratory of Endocrinology and Metabolism DiseaseShandong Province Medicine&HealthJinan 250012ShandongChina

In 2017,American College of Cardiology(ACC)/American Heart Association(AHA)et al.jointly released the latest guidelines for adult hypertension,exactly including prevention,diagnosis,assess and treatment,in which blood pressure levels greater than 130/80 mm Hg were defined as hypertension[1].Based on these modified guidelines,the morbidity of hypertension in US increased from 32%to 46%.

关键词： CKD Analysis Cardiovascular Risk Factors Newly defined Stage 1 Hypertension Chinese the Basis the 2017 ACC/AHA Hypertension Guidelines AHA ACC

Domain-Oriented Software defined Computing Architecture

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China Communications 2019年第6期16卷 162-172页

作者： Ping Lv Qinrang Liu Hongchang Chen Ting Chen National Digital Switching System Engineering and Technical R&D Center

With the introduction of software defined hardware by DARPA Electronics Resurgence Initiative,software definition will be the basic attribute of information system.Benefiting from boundary certainty and algorithm aggregation of domain applications,domain-oriented computing architecture has become the technical direction that considers the high flexibility and efficiency of information system.Aiming at the characteristics of data-intensive computing in different scenarios such as Internet of Things(IoT),big data,artificial intelligence(AI),this paper presents a domain-oriented software defined computing architecture,discusses the hierarchical interconnection structure,hybrid granularity computing element and its computational kernel extraction method,finally proves the flexibility and high efficiency of this architecture by experimental comparison.

关键词： software defined hardware software defined computing architecture hierarchical interconnection mixed-granular computing element

ForSA — A New Software defined Network Architecture Based on ForCES

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China Communications 2016年第S1期13卷 16-31页

作者： LI Chuanhuang CEN Lijie GONG Liang WANG Weiming JIN Rong LAN Julong School of Information and Electronic Engineering Zhejiang Gongshang University National Digital Switching System Engineering & Technological R&D Center

In recent years, SDN(Software defined Network) as a new network architecture has become the hot research point. Meanwhile,the well-known Open Flow-based SDN got a lot of attention. But it can't provide a flexible and effective network resource description method.As an open programmable technology, For CES(Forwarding and Control Element Separation)has also been concerned. However, For CES is confined within a single network node and cannot be applied to the entire network. This paper proposes a new architecture — ForS A(ForC ESbased SDN architecture). The architecture is added a configuration layer based on the traditional SDN architecture, which solves the problem that the northbound interface is not clear between the application layer and the control layer in the SDN architecture. ForS A also implements the compatibility within various forwarding devices in the forwarding layer.

关键词： software defined network ForCES SDN architecture

Naive Echo-State-Network Based Services Awareness Algorithm of Software defined Optical Networks

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China Communications 2020年第4期17卷 11-18页

作者： Huifeng Bai Wenbin Chen Licheng Wang Chao Huo Beijing SmartChip Microelectronics Technology Company Limited Beijing 102200China

As internet services newly emerge with diversity and complexity, great challenges and demands are presented to the Open Flow controlled software defined optical networks(SDON) to achieve better match between services and SDON. With this aim, this paper proposes a naive Echo-State-Network(Naive-ESN) based services awareness algorithm of the software defined optical network, where the naive ESN model adopts the ring topology structure and generates the probability output result to determine the Qo S policy of SDON. Moreover, the Naive-ESN engine is also designed in controller node of SDON to perform services awareness by obtaining service traffic features from data plan, together with some necessary extension of the Open Flow protocol. Test results show that the proposed approach is able to improved services-oriented supporting ability of SDON.

关键词： software defined optical networks naive echo-state-network services awareness openflow protocol

Software defined industrial network architecture for edge computing offloading

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The Journal of China Universities of Posts and Telecommunications 2019年第1期26卷 49-58页

作者： Xu Fangmin Ye Huanyu Cui Shaohua Zhao Chenglin Yao Haipeng School of Telecommunication Engineering Beijing University of Posts and Telecommunications China Petroleum Technology and Development Corporation

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.

关键词： software defined industrial network(SDIN) industrial Internet of things(IIoT) edge computing computing offloading time delay

Joint Resource Allocation and Admission Control Mechanism in Software defined Mobile Networks

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China Communications 2019年第5期16卷 33-45页

作者： Geng Chen Yueyue Zhang Yunchi Shi Qingtian Zeng College of Electronic and Information Engineering Shandong University of Science and TechnologyQingdao 266590China Shanghai Aerospace Electronic Technology Institute Shanghai 201109China

This paper presented a joint resource allocation(RA) and admission control(AC) mechanism in software defined mobile networks(SDMNs). In this mechanism, the joint RA and AC problem can be formulated as an optimization problem with the aim of maximizing the number of admitted users while simultaneously minimizing the number of allocated channels. Since the primal problem is modeled to be a mixed integer nonlinear problem(MINLP), we attain the suboptimal solutions to the primal MINLP by convex relaxation. Additionally, with the global information collected by the SDMNs controller, a centralized joint RA and AC(CJRA)algorithm is proposed by the Lagrange dual decomposition technique to obtain the global optimum. Meanwhile, we propose an OpenFlow rules placement strategy to realize CJRA in an efficient way. Moreover, a distributed algorithm is also developed to find the local optimum, showing a performance benchmark for the centralized one. Finally, simulation results show that the proposed centralized algorithm admits more users compared with the distributed.

关键词： centralized algorithm joint resource allocation and admission control OpenFlow software defined mobile networks(SDMNs)

Blockchain-Based Secure Distributed Control for Software defined Optical Networking

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China Communications 2019年第6期16卷 42-54页

作者： Hui Yang Yongshen Liang Qiuyan Yao Shaoyong Guo Ao Yu Jie Zhang State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and TelecommunicationsBeijing 100876China State Key Laboratory of Networking and Switch Technology Beijing University of Posts and TelecommunicationsBeijing 100876China

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.

关键词： blockchain fault tolerant control network security software defined networking

Finite groups defined by the sets of their element orders

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西南师范大学学报（自然科学版） 1997年第5期22卷 3-8页

ＦｉｎｉｔｅｇｒｏｕｐｓｄｅｆｉｎｅｄｂｙｔｈｅｓｅｔｓｏｆｔｈｅｉｒｅｌｅｍｅｎｔｏｒｄｅｒｓＳｈｉＷｕｊｉｅＭａｔｈｅｍａｔｉｃｓＩｎｓｔｉｔｕｔｅ，ＳｏｕｔｈｗｅｓｔＣｈｉｎａＮｏｒｍａｌＵｎｉｖｅｒｓｉｔｙ... 详细信息

ＦｉｎｉｔｅｇｒｏｕｐｓｄｅｆｉｎｅｄｂｙｔｈｅｓｅｔｓｏｆｔｈｅｉｒｅｌｅｍｅｎｔｏｒｄｅｒｓＳｈｉＷｕｊｉｅＭａｔｈｅｍａｔｉｃｓＩｎｓｔｉｔｕｔｅ，ＳｏｕｔｈｗｅｓｔＣｈｉｎａＮｏｒｍａｌＵｎｉｖｅｒｓｉｔｙ，Ｃｈｏｎｇｑｉｎｇ４００７１５Ａ...

关键词： defined the Finite

IMPULSIVE DIFFERENCE QUOTIENT EQUATION defined ON WELL ORDERED REAL NUMBER SET

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Annals of Differential Equations 1996年第3期12卷 341-352页

作者： Xie Yanlin (South China Normal University, 510631) South China Normal University 510631

In this paper we first introduce impulsive difference quotient equation which is moregeneral than difference equation, and defined on the well ordered real number set with theordinal number not greater than co2. Its basic theory and stability are discussed. Finally wediscuss the theory of difference quotient equation (without impulse) defined on the generalwell ordered real number set.

关键词： SET NUMBER DIFFERENCE defined

A Low-Cost Measurement Framework in Software defined Networks

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International Journal of Communications, Network and System Sciences 2017年第5期10卷 54-66页

作者： Qiang He Shengbao Wang School of Computer Science and Engineering Northeastern University Shenyang China

Software defined Network (SDN) makes network management more flexible by separating control plane and data plane, centralized control and being programmable. Although, network measurement still remains in primary stage in SDN, it has become an essential research field in SDN management. In this context, this paper presents a low-cost high-accuracy measurement framework to support various network measurement tasks, such as throughput, delay and packet loss rate. In this framework, we only measure per-flow edge switches (the first and the last switches). In addition, a new adaptive sampling algorithm is proposed to significantly improve measurement accuracy and decrease network overhead. Meanwhile, we consider a low-cost topology discovery approach into our framework instead of topology discovery currently implemented by SDN controller frameworks. In order to improve the accuracy of delay, we also join a time threshold value to adjust the time delay. Furthermore, we consider and analyze the balance between measurement overhead and accuracy in several aspects. Last, we utilize POX controller to implement the proposed measurement framework. The effectiveness of our solution is demonstrated through simulations in Mininet and Matlab.

关键词： Software defined Network Adaptive Sampling POX Controller OpenLL