Performance analysis of network emulator based on the use of resources in virtual laboratory

Author(s):  
Yuri Ariyanto ◽  
Yan Watequlis Syaifudin ◽  
Budi Harijanto
Author(s):  
Livia Torterolo ◽  
Luca Corradi ◽  
Barbara Canesi ◽  
Marco Fato ◽  
Roberto Barbera ◽  
...  

This chapter describes a Grid oriented platform -the Bio Med Portal- as a new tool to promote collaboration and cooperation among scientists and healthcare research groups, enabling the remote use of resources integrated in complex software platform services forming a virtual laboratory. In fact, nowadays many biomedicine studies are dealing with large, distributed, and heterogeneous repositories as well as with computationally demanding analyses, and complex integration techniques are more often required to handle this complexity. The Bio Med Portal is designed to host several medical services and it is able to deploy several analysis algorithms. The scope of this chapter is both to present a Grid application with its own medical use case and to emphasize the benefit that a new Design Paradigm based on Grid could provide to research groups spread in geographically distributed sites.


2014 ◽  
Vol 886 ◽  
pp. 646-649
Author(s):  
Dong Ming Zhao

As the use of computers become more widely, its intrusion security has become a key issue. In order to solve this problem, this article proposes a analysis research on AC algorithm for the detection of network intrusion. Through the research on the patterns of network intrusion, the AC algorithm for the detection of network intrusion is proposed and analyzed. Simulation results show that the proposed AC algorithm of network intrusion detection has a good efficiency, higher accuracy and efficient use of resources.


Author(s):  
Yuri Ariyanto ◽  
Budi Harijanto ◽  
Yan Watequlis S.

A virtual laboratory with a network emulator environment using NetKit is one of series of basic network laboratories on basic computer network competencies where students are given practical trial opportunities at low costs and little effort in their implementation. Teaching computer network subjects to be easily understood by students needs an instructional media as a tool in delivering material. This media uses computer virtualization technology, i.e. creating a virtual laboratory, as a means of students in conducting experiments from the material that has been obtained. In virtual laboratories it is possible to implement network topology designs based on actual network topologies. This implementation is used as a testing tool before the network topology is implemented on the actual network. Therefore, errors can be identified first without disturbing the system that is already running. For testing, the students are given training using a basic network design consisting of the implementation of routing tests, firewalls, ftp server implementation and web server. This paper is aimed at describing ways to develop a virtual laboratory with a network emulator environment using NetKit. Moreover, several exercises on network topology implementation that are applied directly to the real world with NetKit are introduced, such as describing laboratory settings, describing the main parts of the lab, illustrating lab instructions, and reporting lab feeds.


PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254372
Author(s):  
Yijun Liu ◽  
Huimin Li ◽  
Wenlong Li ◽  
Sunmeng Wang

China is currently designing a regional economic layout for high-quality urban development, shifting its focus from the primary stage of beautifying cities to the next stage of profound urbanization aiming at strengthening industry. This is of high importance given that the urbanization rate of permanent residents by the end of 2019 was 60.60%, according to the National Bureau of Statistics of China. In the face of various factors such as the need to economize the intensive use of resources, urban stock development, and the need for urban constructions to maintain harmony with the surrounding ecosystem, regeneration has emerged as an efficient means to repurpose old residential districts. It conforms to the policy of stock planning and is one of the important methods to ensure the sustainable development of a city. Prioritizing the right attributes in renovation is one of the critical steps in the regeneration of old residential districts—instead of merely focusing on their selection and scoring by experts, more attention should be paid to the resident satisfaction (or the lack thereof) arising from them. Therefore, in this study, we have proposed a collaborative approach that requires communities to prioritize the appropriate aspects in urban renewal. This study employed the three-factor theory of customer satisfaction, to investigate the five attributes namely geographical location, infrastructure, traffic, residential management, and living facilities, of satisfaction and dissatisfaction of residents in the old city. This includes 327 samples based on the residents of Yanta old town in Xi’an. The asymmetric impact-performance analysis technique was used to explore, and quantify the asymmetric relationship between the attributes of old residential districts, and residents’ satisfaction. The results proved that attributes were divided into three: excitement factors, performance, and basic factors, based on the asymmetric influence of attributes on residents’ satisfaction. Residential management was into excitement factors, living facilities were categorized into basic factors, and the remaining three attributes were categorized into performance factors. The satisfaction of the residents regarding the renovation was maximized by comprehensively considering the performance of given attributes, adjusting the improvement strategies of each attribute, and further determining the focus of the renovation of the old residential districts. Simultaneously, it helped planners make more rational choices in urban renewal and sustainable development.


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