318 research outputs found
The Use of GIS for Supporting the Experimental Representation of the Selected Supply Network in Pafos Municipality — \u27The Hydrogis Lab\u27
The HydroGIS Lab project (http://cyprusremotesensing.com/hydrogis/) aims to satisfy the
dire need for authorities to solve the extremely serious problem of water supply as a result
of continued water shortage. The chronic problems of water losses in the water supply
network pipes, the uncontrolled and non-optimum operation of pumping stations, the
incorrect design of the networks because of various interventions such as town planning and
erroneous mapping of existing networks, are some of the most important problems which
need to be resolved in order to optimize the performance of the networks and, consequent‐
ly, save water and energy. The innovative aspect of the Project is that state-of-the-art
technologies are combined for the mapping of water networks through the Global Position‐
ing System (GPS), Radar Scanners and Satellite Remote Sensing (SRS). The data is entered
into a Geographic Information System (GIS), with the aim of developing a digital imprint
and the mapping of the network. The study of an existing selected water supply network
and the collection of the necessary information by the Cyprus University of Technology and
the Water Development for the network and its systems will lead to an imaging of water
pipes and their design using a radar scanner and special software and GIS. Satellite im‐
ages, which have been transformed into the local reference system using specialized software,
will be coupled with the digital imaging of the existing maps. This information will then be
organized in such a way allowing the development of maps and their analysis at different
levels (e.g. water supply network, buildings, water supply elements, geographic informa‐
tion, features of the network’s systems, etc.)
Detection of Water Pipes and Leakages in Rural Water Supply Networks Using Remote Sensing Techniques
Research Directions in Network Service Chaining
Network Service Chaining (NSC) is a service deployment concept that promises increased flexibility and cost efficiency for future carrier networks. NSC has received considerable attention in the standardization and research communities lately. However, NSC is largely undefined in the peer-reviewed literature. In fact, a literature review reveals that the role of NSC enabling technologies is up for discussion, and so are the key research challenges lying ahead. This paper addresses these topics by motivating our research interest towards advanced dynamic NSC and detailing the main aspects to be considered in the context of carrier-grade telecommunication networks. We present design considerations and system requirements alongside use cases that illustrate the advantages of adopting NSC. We detail prominent research challenges during the typical lifecycle of a network service chain in an operational telecommunications network, including service chain description, programming, deployment, and debugging, and summarize our security considerations. We conclude this paper with an outlook on future work in this are
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