The recent area of Wireless Sensor Networks (WSNs) has brought new challenges to developers of net-work protocols. Energy consumption and network coverage are two important challenges in wireless sensor networks. We investigate intelligent techniques for node positioning to reduce energy consumption with coverage preserved in wireless sensor network. A genetic algorithm Is used to create energy...

This paper summarises the impact of major earthquakes, 2010–2011, on Christchurch’s water supply network and what recovery measures have been applied, what worked well, what did not and why. A number of issues related to the open nature of the Christchurch water supply network were identified during earthquakes. It was difficult to manage large water supply pressure zones during the post-earthq...

There is recently an increasing interest in applications based on localization of mobile objects in outdoor environment. Many existing localization solutions rely primarily on a hybrid wireless network/dead reckoning (DR) scheme, as the regular wireless network can hardly estimate a position with satisfactory accuracy in bad channel conditions. However, the DR can involve considerable hardware ...

As it strongly affects localization performance, beacon positioning represents a challenging issue in Large Scale Metrology applications based on wireless sensor networks. This paper presents a software-assisted procedure for an efficient displacement of ultrasonic beacons in a wireless distributed network-based system for medium-large sized object measurements. A regular-grid based strategy an...

Relief demand and transportation links availability is the essential information that is needed for every natural disaster operation. This information is not in hand once a disaster strikes. Relief demand and network condition has been evaluated based on prediction method in related works. Nevertheless, prediction seems to be over or under estimated due to uncertainties and may lead to a failur...

Positioning in learning networks is a process that assists learners in finding a starting point and an efficient route through the network that will foster competence building. In the past we explored computational approaches to positioning that are based on the contents of the learning network and the behavior of those participating in it, more or less ignoring different efforts to stimulate p...

Quentin Wodon and Saul S. Morris November 2001 Abstract While it may be feasible to target those receiving relief after a natural disaster, it is difficult to differentiate the amount of relief provided among beneficiaries. This is because much of the relief consists of food, clothing, and medicine, all goods for which the absorptive capacity of households is limited. Empirical tests using data...

BACKGROUND Treatments for cancer spinal metastasis were always palliative. This study was conducted to investigate the safety and effectiveness of IG-IMRT for these patients. METHODS 10 metastatic lesions were treated with conventionally-fractionated IG-IMRT. Daily kilovoltage cone-beam computed tomography (kV-CBCT) scan was applied to ensure accurate positioning. Plans were evaluated by the ...