scholarly journals Comparison Between Calibration and Sensitivity Approach in Water Network Management in Emergency Conditions

10.29007/fgbp ◽  
2018 ◽  
Author(s):  
Attilio Fiorini Morosini ◽  
Olga Caruso ◽  
Paolo Veltri
Keyword(s):  
Network Management ◽  
Pressure Reduction ◽  
Water Network ◽  
Pipe Failure ◽  
Critical Nodes ◽  
Intervention Area ◽  
Sensitivity Approach ◽  
Calibration Techniques ◽  
Demand Control

When a network works in emergency conditions, due to a pipe failure, an appropriate management of the system is necessary. These events can cause a bad service for the users, because the pressure in some nodes of the network (critical nodes) decreases and the required demand is not guaranteed. In fact, a pipe failure causes the isolation of the intervention area, modifies the circulating flow along pipes and can produce a pressure reduction in some nodes.In network management the aim is to increase the pressure, and consequently the flow rate delivered at critical nodes in order to minimize disruptions during the time between the failure and the repair.In this paper, a methodology based on the nodal demand control is proposed. The nodal demand control proposed is possible by using control valves and by identifying the nodes where the control should be done. The control nodes can be chosen by using sensitivity matrices or an approach based on calibration techniques. A case study shows the results obtained with both methods for the real network of Praia a Mare in the South of Italy.

SIMULATION AND CONTROL OF FLOODS IN A WATER NETWORK. CASE STUDY OF JIJIA RIVER CATCHMENT

2017 ◽  
Vol 16 (3) ◽  
pp. 587-595
Author(s):  
Vasile Mircea Cristea ◽  
Ph.m Thai Hoa ◽  
Mihai Mogos-Kirner ◽  
Csavdari Alexandra ◽  
Paul Serban Agachi
Keyword(s):  
Water Network ◽  
River Catchment ◽  
Simulation And Control ◽  
And Control

scholarly journals Risk analysis of gas leakage in gas pressure reduction station and its consequences: A case study for Zahedan

Heliyon ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. e06911
Author(s):  
Peiman Dadkani ◽  
Esmatullah Noorzai ◽  
AmirHossein Ghanbari ◽  
Ali Gharib
Keyword(s):  
Risk Analysis ◽  
Gas Pressure ◽  
Pressure Reduction ◽  
Gas Leakage ◽  
Pressure Reduction Station

scholarly journals UM ESTUDO DE CASO SOBRE A IMPLANTAÇÃO DE UM AMBIENTE DE SEGURANÇA DE REDES DE COMPUTADORES

2019 ◽  
Vol 9 (1) ◽  
pp. 119-139
Keyword(s):  
Network Management ◽  
Computer Network ◽  
City Hall ◽  
Demilitarized Zone ◽  
Local Areas ◽  
It Department ◽  
Secure Environment ◽  
Definition Of ◽  
The City

This paper presents a case study involving the deployment of a secure environment on the computer network at the City Hall in Palmeira das Missões - RS, throughout the definition of a physical and logical infrastructure, supported at concepts of management of computer networks and information security. Through the creation of Vlans (Virtual Local Areas Networks) and definition of DMZ (Demilitarized Zone) defined to achieve the level of security and network management required by the IT department, as well as provide greater reliability and integrity of information that travel on the network so that the users can perform their tasks more dynamically in a secure and agile environment. The main contribution of this case study was the implementation of a security and management in the computer network at the City Hasll in Palmeira das Missões – RS.

Lab Development for Delivering Information Systems Courses Online at Small Campuses

2012 ◽  
pp. 246-266
Author(s):  
Li Chao
Keyword(s):  
Information Systems ◽  
Network Management ◽  
Quality Teaching ◽  
Computer Lab ◽  
Know How ◽  
Limited Budget ◽  
Hands On ◽  
Software And Hardware

In this case study, you will encounter some of the issues of lab development for delivering lab-based information systems courses online. Many small campuses have very limited budget or no budget at all for the computer lab specifically designed for information systems majors. Sometimes, even with new computers purchased, very few people know how to set them up for lab-based information systems (IS) courses. What are the software and hardware requirements for getting the lab online? How much will it cost? Where can you find resources for the lab development? To ensure quality teaching on IS-related topics, you have to deal with these issues. This case study will discuss how to create a lab that allows students to get hands-on practice for courses such as network management or database processing online with a shoestring budget.

Providing Quality of Service across Multiple Providers

2010 ◽  
pp. 280-296
Author(s):  
Christos Bouras ◽  
Apostolos Gkamas ◽  
Kostas Stamos
Keyword(s):  
Quality Of Service ◽  
Network Management ◽  
Network Services ◽  
Qos Provisioning ◽  
Backbone Networks ◽  
Important Quality ◽  
Academic Network ◽  
Research And Education

In this chapter, the authors present some of the latest developments related to the provisioning of Quality of Service (QoS) in today’s networks and the associated network management structures that are or will be deployed to support them. They first give a brief overview of the most important Quality of Service proposals in the areas of Layer 2 (L2) and Layer 3 (L3) QoS provisioning in backbone networks, and they discuss the network management structures and brokers that have been proposed in order to implement these services. As a case study, they describe the pan-european research and academic network, which is supported centrally by GEANT and which encompasses multiple independent NRENs (National Research and Education Networks). In the last few years, GEANT has developed and deployed a number of production and pilot services meant for the delivery of quality network services to the end users across Europe.

scholarly journals Energy and Cost Savings through Pumping Stations Rehabilitation. Case Study in Bucharest

Proceedings ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 593
Author(s):  
Sorin Perju ◽  
Alexandru Aldea
Keyword(s):  
Water Distribution ◽  
Energy Savings ◽  
Distribution Network ◽  
Cost Savings ◽  
Water Distribution Network ◽  
Water Network ◽  
Water Losses ◽  
Pumping Stations ◽  
Technical Solutions

This paper presents the results recorded by upgrading and rehabilitating the pumping stations for an urban water network with a primary goal of diminishing the operation and maintenance costs and a secondary goal of reducing the water losses in the water distribution network. The adopted technical solutions within the structural and functional modifications of the pumping stations have led to both the improvement of hydraulic parameters of the pumping stations and also the improvement of registered energy consumption. The undertaken modifications and transformations within the pumping stations led to significant energy savings and at the same time to important water losses reductions within the distribution network.

scholarly journals Management of Water Distribution Systems in PDA Condition with Isolation Valves

Proceedings ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 672 ◽  
Author(s):  
Attilio Fiorini Morosini ◽  
Olga Caruso ◽  
Paolo Veltri
Keyword(s):  
Distribution Systems ◽  
Water Distribution ◽  
Distribution Networks ◽  
Optimal Number ◽  
System Control ◽  
Pipe Failure ◽  
Reliable System ◽  
Network Nodes ◽  
Pipe Burst

The correct management of Water Distribution Networks (WDNs) allows to obtain a reliable system. When a pipe failure occurs in a network and it is necessary to isolate a zone, it is possible that some nodes do not guarantee service for the users due to inadequate heads. In these conditions a Pressure Driven Analysis (PDA) is the correct approach to evaluate network behavior. This analysis is more appropriate than the Demand Driven Analysis (DDA) because it is known that the effective delivered flow at each node is influenced by the pressure value. In this case, it is important to identify a subset of isolation valves to limit disrupting services in the network. For a real network, additional valves must be added to existing ones. In this paper a new methodological analysis is proposed: it defines an objective function (OF) to provide a measure of the system correct functioning. The network analysis using the OF helps to choose the optimal number of additional valves to obtain an adequate system control. In emergency conditions, the OF takes into account the new network topology obtained excluding the zone where the broken pipe is located. OF values depend on the demand deficit caused by the head decrement in the network nodes for each pipe burst considered. The results obtained for a case study confirm the efficiency of the methodology.

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