Towards an Adaptive Service Degradation Approach for Handling Server Overload

2012 ◽  
Author(s):  
Ziyou Wang ◽  
Minghui Zhou ◽  
Hong Mei
Keyword(s):  
Service Degradation ◽  
Server Overload

scholarly journals Traffic Rerouting Strategy against Jamming Attacks in WSNs for Microgrid

2012 ◽  
Vol 8 (4) ◽  
pp. 234029 ◽  
Author(s):  
Yujin Lim ◽  
Hak-Man Kim ◽  
Tetsuo Kinoshita
Keyword(s):  
Performance Comparison ◽  
Level Of Service ◽  
Delivery Ratio ◽  
Traffic Flows ◽  
Jamming Attacks ◽  
Jamming Attack ◽  
End To End Delay ◽  
Multiple Paths ◽  
Service Degradation ◽  
Conventional Scheme

In a microgrid as an energy infrastructure, the vulnerability against jamming attacks is fatal. Thus, the ability to deal with jamming attacks and maintain an acceptable level of service degradation in presence of the attacks is needed. To solve the problem, we propose a traffic rerouting scheme in wireless communication infrastructure for islanded microgrid. We determine disjoint multiple paths as candidates of a detour path and then select the detour path among the candidates in order to reduce the effect of jamming attack and distribute traffic flows on different detour paths. Through performance comparison, we show that our scheme outperforms a conventional scheme in terms of packet delivery ratio and end-to-end delay.

scholarly journals The Communication in Distributed Client - Server Systems Used for Management of Flexible Manufacturing Systems

2011 ◽  
Vol 6 (2) ◽  
pp. 297
Author(s):  
Valeriu Lupu ◽  
Doru E. Tiliute
Keyword(s):  
Neural Networks ◽  
Flexible Manufacturing ◽  
Manufacturing Systems ◽  
Labour Productivity ◽  
Necessary Condition ◽  
Client Server ◽  
Labour Productivity Growth ◽  
Economic Progress ◽  
The Neural Networks ◽  
Server Overload

<p>Labour productivity growth is a necessary condition for social and economic progress, in general, and to overcome the economic crisis facing most of the world, in special. <br />Applying innovative solutions, based on the ITC, is one of the straight ways for achieving that objective, both important and necessary. This paper presents a software solution applicable to industrial production based on numerically controlled machines. It involves a distributed client - server communication system, combined with MLP neural networks for the recognition of the 2D industrial objects, viewed from any angle. The information on prismatic and rotational parts to be processed by numerically controlled machine, are stored on a database server together with the corresponding processing programs. The client applications run on the numerically controlled machines and on the robots serving groups of machines. While the machines are fixed, the robots are mobile and can move from a machine to another. As a novelty of the proposed solution, in some well defined situations, the clients are allowed to change messages among them, in order to avoid the server overload. The neural networks are used to help robots to recognize the parts before and during manipulation.</p>

802.11ax

2020 ◽  
pp. 102-121
Author(s):  
Alison Harcourt ◽  
George Christou ◽  
Seamus Simpson
Keyword(s):  
Mobile Communications ◽  
Internet Access ◽  
The Internet ◽  
Organizational Contexts ◽  
Mobile Access ◽  
Competition For Space ◽  
Wireless Environment ◽  
Service Degradation

The local wireless environment has been the setting for the co-existence of licensed mobile communications operators and unlicensed WiFi Internet access providers. The IEEE802.11 family of standards, developed for WiFi services in the Institute of Electrical and Electronics Engineers (IEEE), has dominated standards-setting. However, the burgeoning demand for mobile access to the Internet has led to competition for space on the spectrum. Left unaddressed, this co-existence has created practical issues of potential territorial incursion, technical interference, and, ultimately, device underperformance and service degradation. The chapter focuses on the IEEE’s efforts to create a co-existence standard in a crowded and highly contested standards-making space. It shows how alternative standards-making organizational contexts, based on licensed spectrum standards traditions, were able to develop and insert co-existence standards for WiFi ahead of the IEEE initiative. The chapter explains how the IEEE developed its 802.11ax co-existence standard in this environment.

Courting Customers: Assessing Consumer Racial Profiling and other Marketplace Discrimination

2005 ◽  
Vol 24 (1) ◽  
pp. 163-171 ◽  
Author(s):  
Anne-Marie G. Harris ◽  
Geraldine R. Henderson ◽  
Jerome D. Williams
Keyword(s):  
Racial Profiling ◽  
Federal Court ◽  
Ethnic Discrimination ◽  
Level Of Service ◽  
Court Decisions ◽  
Service Degradation ◽  
The U.S ◽  
Consumer Discrimination

Through an examination of 81 federal court decisions made between 1990 and 2002 involving customers’ allegations of race and/or ethnic discrimination, the authors uncover three emergent dimensions of discrimination: (1) the type of alleged discrimination (subtle or overt), (2) the level of service (degradation or denial), and (3) the existence of criminal suspicion in the alleged discriminatory conduct (present or absent). Using a framework that enables the categorization and aggregation of cases with common themes, the authors demonstrate that real and perceived consumer discrimination remains a problem in the U.S. marketplace, and they conclude that further research is necessary for marketers to address the issue effectively.

scholarly journals ON A GENERALIZED M/G/1 QUEUE WITH SERVICE DEGRADATION/ENFORCEMENT

1998 ◽  
Vol 41 (3) ◽  
pp. 415-429 ◽  
Author(s):  
Nobuko Igaki ◽  
Ushio Sumita ◽  
Masashi Kowada
Keyword(s):  
Service Degradation

K-0645 In-Service Degradation of Gas Turbine Blade Coatings

2001 ◽  
Vol I.01.1 (0) ◽  
pp. 285-286
Author(s):  
Akihiro ITO ◽  
Kazuhiro SUGIYAMA ◽  
Nobuo SHINOHARA ◽  
Yuji SUGITA ◽  
Shigeo SAKURAI ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Turbine Blade ◽  
Gas Turbine Blade ◽  
Service Degradation
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