The Experts below are selected from a list of 38346 Experts worldwide ranked by ideXlab platform
Udaya Tupakula - One of the best experts on this subject based on the ideXlab platform.
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security as a Service Model for cloud environment
IEEE Transactions on Network and Service Management, 2014Co-Authors: Vijay Varadharajan, Udaya TupakulaAbstract:Cloud computing is becoming increasingly important for provision of Services and storage of data in the Internet. However there are several significant challenges in securing cloud infrastructures from different types of attacks. The focus of this paper is on the security Services that a cloud provider can offer as part of its infrastructure to its customers (tenants) to counteract these attacks. Our main contribution is a security architecture that provides a flexible security as a Service Model that a cloud provider can offer to its tenants and customers of its tenants. Our security as a Service Model while offering a baseline security to the provider to protect its own cloud infrastructure also provides flexibility to tenants to have additional security functionalities that suit their security requirements. The paper describes the design of the security architecture and discusses how different types of attacks are counteracted by the proposed architecture. We have implemented the security architecture and the paper discusses analysis and performance evaluation results.
Vijay Varadharajan - One of the best experts on this subject based on the ideXlab platform.
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security as a Service Model for cloud environment
IEEE Transactions on Network and Service Management, 2014Co-Authors: Vijay Varadharajan, Udaya TupakulaAbstract:Cloud computing is becoming increasingly important for provision of Services and storage of data in the Internet. However there are several significant challenges in securing cloud infrastructures from different types of attacks. The focus of this paper is on the security Services that a cloud provider can offer as part of its infrastructure to its customers (tenants) to counteract these attacks. Our main contribution is a security architecture that provides a flexible security as a Service Model that a cloud provider can offer to its tenants and customers of its tenants. Our security as a Service Model while offering a baseline security to the provider to protect its own cloud infrastructure also provides flexibility to tenants to have additional security functionalities that suit their security requirements. The paper describes the design of the security architecture and discusses how different types of attacks are counteracted by the proposed architecture. We have implemented the security architecture and the paper discusses analysis and performance evaluation results.
Jun Shen - One of the best experts on this subject based on the ideXlab platform.
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The Modeling and Analysis of the Extensible Network Service Model
IEEE Access, 2018Co-Authors: Zu Qin Ji, Jun Shen, Delin DingAbstract:With the increasing number of new application requirements in network, the capability of providing Services in traditional network is being challenged constantly. The network Service Model, which is the core of the network architecture, directly determines the capability of providing network Services. However, there lacks the explicit Service Model about the research of the next generation network architectures. We propose the extensible network Service Model (ENSM). In this paper, the basic principle of the ENSM is summarized. Then the mathematical Modeling of the ENSM is provided and, based on the mathematical Modeling, we analyze the functional description and the performance calculation for composite Services when a Service composition instance is implemented. Finally, through the experimental Modeling and the simulation, the performances of the ENSM are compared with those of the traditional network when providing the same Service. The experimental results show that the Services can be customized or composed flexibly without sacrificing the performances in the extensible network Service Model. It can also be seen that the Model can implement Service extension better and the Model idea is correct.
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The Modeling and Analysis of the Extensible Network Service Model
IEEE Access, 2018Co-Authors: Zu Qin Ji, Jun Shen, Delin DingAbstract:With the increasing number of new application requirements in network, the capability of providing Services in traditional network is being challenged constantly. The network Service Model, which is the core of the network architecture, directly determines the capability of providing network Services. However, there lacks the explicit Service Model about the research of the next generation network architectures. We propose the extensible network Service Model (ENSM). In this paper, the basic principle of the ENSM is summarized. Then the mathematical Modeling of the ENSM is provided and, based on the mathematical Modeling, we analyze the functional description and the performance calculation for composite Services when a Service composition instance is implemented. Finally, through the experimental Modeling and the simulation, the performances of the ENSM are compared with those of the traditional network when providing the same Service. The experimental results show that the Services can be customized or composed flxibly without sacrificing the performances in the extensible network Service Model. It can also be seen that the Model can implement Service extension better and the Model idea is correct.
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Network-interconnection-oriented: A scalable routing Service Model
Proceedings - 18th IEEE International Conference on High Performance Computing and Communications 14th IEEE International Conference on Smart City and, 2017Co-Authors: Yi Wan, Tao Han, Jun Shen, Zu Qin JiAbstract:Aimed at improving poor performance of current network routing Service in the way of scalability, a new scalable routing Service Model (SRSM) is proposed based on the core of network interconnection and principles of modern packet switching. Three basic elements, which are addressing mode, routing table and routing algorithm, are abstracted to establish Meta Model (SRSM) of routing Service and realize typification of routing Service Models. Thus enhancing the abstraction level of routing Service Model can make it more flexible and scalable. Furthermore, the scalability of SRSM is resolving through contrasting routing Service Model instances of IP network, CDN (Content Delivery Network) and NDN (Named Data Networking). Finally, the related experiments of named routing Service Model instances and IP routing Service Model instances based on SRSM are provided to verify the feasibility and scalability of SRSM.
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IPCCC - The analysis of Service extensibility in extensible network Service Model
2016 IEEE 35th International Performance Computing and Communications Conference (IPCCC), 2016Co-Authors: Zu Qin Ji, Jun Shen, Xiao Zhou, Delin Ding, Yujian ZhangAbstract:With the increasing development of network technologies and the growing number of new Service requirements in Internet, the problem of Service extensibility in traditional network is being challenged constantly. Thus, we propose the extensible network Service Model. In this paper, the basic principle of the extensible network Service Model is described firstly. Then, on the basis of Service composition operator, the Service extensibility of the Service Model is analyzed in detail. Finally, through the experimental comparison, the difference of performance between the traditional network and the extensible network Service Model is given when providing the same Service. From the experiment results, it can be verified that the extensible network Service Model does well in Service extensibility.
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WOCN - An HSM-based scalable network Service Model
2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN), 2014Co-Authors: Yinlu Peng, Jun ShenAbstract:The scalability of the ability to provide and deploy network Services is one of the major demands of the next generation network, and is also the main challenge of the development of the network Service Model technique. Through the comparison of several different network Service Models and the analysis of the key mechanisms of the next generation network, this paper proposes an HSM (hierarchical state machine) based scalable network Service Model which can dynamically build the users' required network Services. The paper gives an example of implementing a network transfer Service with connections using our proposed dynamic Service composition method. The experiment results illustrate the feasibility and flexibility of this scalable network Service Model.
Jinlong Zhang - One of the best experts on this subject based on the ideXlab platform.
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Comparison of Family Clinic Community Health Service Model with State-owned Community Health Service Model
Journal of Huazhong University of Science and Technology-medical Sciences, 2002Co-Authors: Zuxun Lu, Jinlong ZhangAbstract:Based on a survey of community health Service organization in several cities, community health Service Model based on the family clinic was compared with state-owned community health Service Model, and status quo, advantages and problems of family community health Service organization were analyzed. Furthermore, policies for the management of community health Service organization based on the family clinic were put forward.
Zhongjie Wang - One of the best experts on this subject based on the ideXlab platform.
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Value Annotation for Service Model Analysis
2010 International Conference on Service Sciences, 2010Co-Authors: Zhongjie Wang, Xiaofei Xu, Xu ShaoAbstract:Service Modeling is a critical step in describing customer requirements and designing Service systems. The quality of Service Models determines the quality of Service systems to a great extent. To analyze the Service Models in a way that would show deficiencies in delivering Service values, we propose the idea of "value annotation" by which expected values are labeled on the functional elements of Service Models, and their implementation degrees are connected with QoS of these functional elements. Value annotation's elementary principles, process, and Model forms are presented. Then, the preliminary principles of value annotation-based Service Model analysis are briefly introduced. To complement the above discussion, a small case study from ocean transportation Service is applied for demonstration.
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IESA - SMDA: A Service Model Driven Architecture
Enterprise Interoperability II, 2007Co-Authors: Xiaofei Xu, Tong Mo, Zhongjie WangAbstract:As Service industry has gradually been the domination of world economy, research and practice on Service and Service system development is now flourishing as a hotspot in both academia and industry. Service engineering, referring to the methodology for Service system Modeling, development and deployment with the support of information technologies, has great significance to improve the quality and efficiency of Service enterprises. However, until today there are still lack of enough attentions on such methodology. To address this issue, in this paper we present a Service-oriented Model driven architecture named SMDA, which extends UML to USML to describe Service Model and support the interoperability between heterogeneous Service Model, uses Service component to build Service system and adopts a QFD based Service evaluation method to evaluate the Service Models and Service system. This paper is to provide solution for establishing Service systems to respond customer requirements in an “agile” style.
