scholarly journals Raciocínio Baseado em Casos para a Configuração de Modelos de Alocação de Banda

2022 ◽  
Author(s):  
Eliseu Morais de Oliveira ◽  
Rafael F Reale ◽  
Joberto S. B. Martins
Keyword(s):  
Network Management ◽  
Bandwidth Allocation ◽  
Network Performance ◽  
Feasible Solution ◽  
Case Based Reasoning ◽  
Data Flows ◽  
General Network ◽  
Multi Protocol Label Switching ◽  
Network Manager ◽  
Computational Resources

The extensive adoption of computer networks, especially the Internet, using services that require extensive data flows, has generated a growing demand for computational resources, mainly bandwidth. Bandwidth Allocation Models (BAM) have proven to be a viable alternative to network management where the bandwidth resource is shared to meet the high demand for the network. However, managing these networks has become an increasingly complex task, and solutions that allow for nearly autonomous configuration with less intervention of the network manager are highly demanded. The use of Case-Based Reasoning (CBR) techniques for network management has proven satisfactory for decision making and network management. This work presents a proposal for network reconfiguration based on the CBR cycle, intelligence, and cognitive module for MPLS (Multi-Protocol Label Switching) networks. The results show that CBR is a feasible solution for auto-configuration with autonomic characteristics in the MPLS using bandwidth allocation models (BAMs). The proposal improved the general network performance.

Policy coordination and integration, trust, management and performance in public health-related policy networks: a survey

2016 ◽  
Vol 83 (1) ◽  
pp. 200-222 ◽  
Author(s):  
Dorothee T.J.M. Peters ◽  
Erik Hans Klijn ◽  
Karien Stronks ◽  
Janneke Harting
Keyword(s):  
Public Health ◽  
Health Policy ◽  
Network Management ◽  
Public Health Policy ◽  
Network Performance ◽  
Policy Networks ◽  
Policy Coordination ◽  
Network Manager ◽  
The Creation

Intersectoral policy networks may be effective in dealing with complex public health problems. Their performance is assumed to depend on network management and trust, as well as on integrated public health policy (i.e. policy coordination and integration). We studied the role of network management and trust in the realization of integrated public health policy and network performance, as well as the relation between integrated public health policy and network performance. In 34 Dutch local policy networks, we measured the perceptions of 278 actors through a Web-based survey and used regression analyses to assess the relations between policy variables. Management and trust were positively related to perceived integrated public health policy and network performance, while integrated public health policy was also positively related to perceived network performance. In public health, the performance of intersectoral policy networks may be improved by adequate network management, the creation of trust and policy coordination and integration. Future research could further explore the role of specific characteristics of the network manager, like the manager’s background, relation to the other actors and leadership style. Points for practitioners Regarding inter-sectoral policy networks in public health: first, when aiming for the realization of policy coordination and integration, the employment of network management strategies and the creation of trust are of importance for the network manager; and, second, when also aiming for the realization of network performance, the creation of policy coordination and integration is of additional importance for the network manager.

Traffic and Network Performance Monitoring for Effective Quality of Service and Network Management

2010 ◽  
pp. 201-227
Author(s):  
P. Papantoni-Kazakos ◽  
A. T. Burrell
Keyword(s):  
Mobile Networks ◽  
Network Performance ◽  
Performance Monitoring ◽  
Sequential Algorithm ◽  
Heterogeneous Environments ◽  
Time Varying ◽  
Distributed Environment ◽  
Data Flows ◽  
Network Performance Monitoring ◽  
And Performance

The authors consider distributed mobile networks carrying time-varying heterogeneous traffics. To deal effectively with the mobile and time-varying distributed environment, the deployment of traffic and network performance monitoring techniques is necessary for the identification of traffic changes, network failures, and also for the facilitation of protocol adaptations and topological modifications. Concurrently, the heterogeneous traffic environment necessitates the deployment of hybrid information transport techniques. This chapter discusses the design, analysis, and evaluation of distributed and dynamic techniques which manage the traffic and monitor the network performance effectively, while capturing the dynamics inherent in the mobile heterogeneous environments. Specifically, the design of a monitoring sub-network is sought, where the arising research tasks include: • the adoption of a core sequential algorithm which monitors both the variations in the rates of the information data flows and the dynamics of the network performance. • The identification of the specific operational and performance characteristics of the monitoring systems, when the core algorithm is implemented in a distributed environment; for a given network topology, it is important to identify the minimum size monitoring sub-network for complete “visibility” of data flows and network functions. • Dynamically changing monitoring sub-network architectures, as functions of time-varying network topologies. • The deployment of Artificial Intelligence learning techniques, in the presence of dynamically changing network and information flow environments, to appropriately adapt crucial operational parameters of the data monitoring algorithms.

Management and culture in successful networks

2019 ◽  
Vol 33 (4) ◽  
pp. 381-400
Author(s):  
Daniela Cristofoli ◽  
Mattia Martini ◽  
Benedetta Trivellato ◽  
Dario Cavenago
Keyword(s):  
Network Management ◽  
Network Performance ◽  
Management Practices ◽  
Qualitative Comparative Analysis ◽  
Critical Factor ◽  
Content Type ◽  
Network Characteristics ◽  
Network Culture ◽  
Managerial Behaviors ◽  
Funded Project

Purpose It is generally recognized that network management is a critical factor for network success. It is also acknowledged that different managerial behaviors are necessary in different network settings. Scholars have explored the relationships between network characteristics and managerial behaviors, but the role of network culture in influencing network managers’ activities remains under-investigated. The purpose of this paper is to address this gap. Design/methodology/approach The analysis is developed through a fuzzy-set qualitative comparative analysis of 18 country-based networks involved in the same EU-funded project. Findings The results shed light on two different combinations of network culture types and management practices simultaneously leading to high network performance. Originality/value The paper confirms the existence of a relationship between network management and certain characteristics of the networks, in particular network culture.

The Network Management Based Multi-Channel Connection Management of MOST

2013 ◽  
Vol 385-386 ◽  
pp. 1604-1609
Author(s):  
Yun Han Chen ◽  
Gui He Qin ◽  
Yang Nan
Keyword(s):  
Network Management ◽  
Data Transmission ◽  
Bandwidth Allocation ◽  
Implementation Strategy ◽  
Reliable Data ◽  
Available Bandwidth ◽  
Connection Management ◽  
Mechanism Model ◽  
Finite State ◽  
Multimedia Resource

In order to provide higher available bandwidth, flexible accessing and shared multimedia resource to the application in Media oriented systems transport (MOST) network. This paper proposed an implementation strategy of MOST network management, which is described by finite state mechanism model, discussed the scheme of multiple synchronous audio or video channel connection (SA/VCC) management. These works give an improved solution for MOST, which supports flexible accessing and reliable data transmission for multimedia devices, provides reasonable bandwidth allocation and shared multimedia resource in synchronous channel in practical.

End-to-End Network Performance Management Framework Based on Case-Based Reasoning

2015 ◽  
Vol 94 (1) ◽  
pp. 69-82 ◽  
Author(s):  
Buseung Cho ◽  
Seong-Jin Ahn ◽  
Kyong-Ho Choi ◽  
Byung Yun Lee ◽  
Jin-Wook Chung
Keyword(s):  
Performance Management ◽  
Network Performance ◽  
Case Based Reasoning ◽  
Management Framework ◽  
End To End ◽  
Case Based ◽  
Network Performance Management

scholarly journals HapCHAT: Adaptive haplotype assembly for efficiently leveraging high coverage in long reads

2017 ◽  
Author(s):  
Stefano Beretta ◽  
Murray D Patterson ◽  
Simone Zaccaria ◽  
Gianluca Della Vedova ◽  
Paola Bonizzoni
Keyword(s):  
Error Rate ◽  
Feasible Solution ◽  
State Of The Art ◽  
High Coverage ◽  
Haplotype Blocks ◽  
Haplotype Assembly ◽  
Current State ◽  
Error Corrections ◽  
Long Reads ◽  
Computational Resources

AbstractBackgroundHaplotype assembly is the process of assigning the different alleles of the variants covered by mapped sequencing reads to the two haplotypes of the genome of a human individual. Long reads, which are nowadays cheaper to produce and more widely available than ever before, have been used to reduce the fragmentation of the assembled haplotypes since their ability to span several variants along the genome. These long reads are also characterized by a high error rate, an issue which may be mitigated, however, with larger sets of reads, when this error rate is uniform across genome positions. Unfortunately, current state-of-the-art dynamic programming approaches designed for long reads deal only with limited coverages.ResultsHere, we propose a new method for assembling haplotypes which combines and extends the features of previous approaches to deal with long reads and higher coverages. In particular, our algorithm is able to dynamically adapt the estimated number of errors at each variant site, while minimizing the total number of error corrections necessary for finding a feasible solution. This allows our method to significantly reduce the required computational resources, allowing to consider datasets composed of higher coverages. The algorithm has been implemented in a freely available tool, HapCHAT: Haplotype Assembly Coverage Handling by Adapting Thresholds. An experimental analysis on sequencing reads with up to 60× coverage reveals improvements in accuracy and recall achieved by considering a higher coverage with lower runtimes.ConclusionsOur method leverages the long-range information of sequencing reads that allows to obtain assembled haplotypes fragmented in a lower number of unphased haplotype blocks. At the same time, our method is also able to deal with higher coverages to better correct the errors in the original reads and to obtain more accurate haplotypes as a result.AvailabilityHapCHAT is available at http://hapchat.algolab.eu under the GPL license.

scholarly journals Cloud radio access network fronthaul solution using optimized dynamic bandwidth allocation algorithm

2021 ◽  
Vol 11 (2) ◽  
pp. 1395
Author(s):  
Ebude Carine Awasume ◽  
Stephen Musyoki ◽  
Vitalice Kalecha Oduol
Keyword(s):  
Network Management ◽  
Bandwidth Allocation ◽  
Access Network ◽  
Cost Effective ◽  
Dynamic Bandwidth Allocation ◽  
Radio Access Network ◽  
Cloud Radio Access Network ◽  
Radio Access ◽  
Dynamic Bandwidth ◽  
Bandwidth Allocation Algorithm

In order to address the challenges that have come with the exploding demand for higher speed, traffic growth and mobile wireless devices, Mobile network operators have decided to move to the notion of small cells based on cloud radio access network. The merits of cloud based RAN includes the ease of infrastructure deployment and network management as well as the fact that its performance are optimized and it is cost effective the merits of cloud based RAN includes the ease of infrastructure deployment and network management as well as the fact that its performance are optimized and it is cost effective. Notwithstanding, cloud radio access network comes with so many strict requirements to be fulfilled for its fronthaul network. In this paper, we have presented these requirements for a 5G fronthaul network. Particular interest on the time division multiplex passive optical network’s challenge of latency was treated by proposing an optimized version of the round robin dynamic bandwidth allocation algorithm. Results obtained show an improvement in the latency of the original algorithm which meets the fronthaul requirement. Other test parameters like jitter and BER were also improved by our proposed optimized algorithm.

scholarly journals Affordable Broadband with Software Defined IPv6 Network for Developing Rural Communities

2019 ◽  
Vol 3 (1) ◽  
pp. 4 ◽  
Author(s):  
Babu R. Dawadi ◽  
Danda B. Rawat ◽  
Shashidhar R. Joshi ◽  
Daya S. Baral
Keyword(s):  
Rural Communities ◽  
Network Management ◽  
Service Provider ◽  
Network Performance ◽  
Service Providers ◽  
Policy Formulation ◽  
Network Service ◽  
Provider Network ◽  
Ipv6 Network ◽  
Operational Expenditure

The software defined networking (SDN) paradigm with enhanced features of IPv6 offers flexible network management and better network visibility for enhancing overall network performance, network manageability, and security. Thus, along with the IPv6 network deployment worldwide, SDN migration has emerged worldwide, but network service providers suffer from different issues when migrating their existing legacy network into operable SDN and IPv6 enabled networks. In this paper, we investigate the affordability of broadband network services for the rural communities in the context of information and communication technology (ICT) infrastructure deployment throughout Nepal. During the phase of network transformation, it will be more challenging for the service providers of Nepal to have a proper choice of technologies to expand the network while considering the proper policy formulation, affordability, need of skilled human resources, deployment cost, and many other aspects. We also present the service provider affordability via energy optimization in software defined IPv6 network (SoDIP6) implementation that contributes to a reduction in organizational operational expenditure (OpEX). We perform an experimental analysis over an SoDIP6 network testbed and present a comparison of the annual energy and OpEX savings for network service providers. Our empirical analysis shows that an energy saving of 31.50% on switches and 55.44% on links can be achieved with an SoDIP6 network compared to a network with legacy devices and network management. Optimization on service provider network operational cost leads to sustainability and affordable services to both customers and service providers

Network Management Resource Costs

2009 ◽  
pp. 592-597
Author(s):  
Colin Pattinson
Keyword(s):  
Decision Making ◽  
Network Management ◽  
Network Configuration ◽  
Management Decisions ◽  
Context Management ◽  
Communications Networks ◽  
Computer Communications ◽  
Network Manager ◽  
Resource Costs ◽  
And Performance

The reliance on computer communications networks for business and commerce, education, entertainment and many other applications demands these resources are managed effectively. In this context, “management” refers to ensuring security and performance, recovering from faults and accounting for utilisation. Each of these activities requires knowledge of the network configuration, and information about the networked devices. It is on the basis of this knowledge that management decisions to change the configuration and network behaviour are taken. Hence the manager requires as full and accurate a set of information about the network under their control as it is possible to get. Typically, this information resides across the network and is transferred (to the network manager) to assist the network manager’s decision making.

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