In this article, we aim to explore the potential of using onboard cameras and pre-stored geo-referenced imagery for Unmanned Aerial Vehicle (UAV) localization. Such a vision-based localization enhancing system is vital importance, particularly in situations where integrity global positioning (GPS) question (i.e., occurrence GPS outages, jamming, etc.). To end, propose complete trainable pipelin...

Cloud computing is pervasive, but cloud service outages still take place. One might say that the computing forecast for tomorrow is “cloudy with a chance of failure.” One main reason why major outages still occur is that there are many unknown large-scale failure scenarios in which recovery might fail. We propose a new type of cloud service, Failure as a Service (FaaS), which allows cloud servi...

We propose an approach based on neural networks and the AC power flow equations to identify singleand doubleline outages in a power grid using the information from phasor measurement unit sensors (PMUs). Rather than inferring the outage from the sensor data by inverting the physical model, our approach uses the AC model to simulate sensor responses to all outages of interest under multiple dema...

Disruptions in the bulk power grid can result in very diverse consequences that include economic, social, physical, and psychological impacts. In addition, power outages do not affect all end-users of the system in the same manner. For these reasons, a risk analysis of bulk power systems requires more than determining the likelihood and magnitude of power outages; it must also include the diver...

We describe a practical method for estimating the economic cost of outages in electronic communications networks, accommodating temporal, geographical and sectoral variations in incidence. The method is illustrated with two types of examples: a hypothetical outage of the main fixed line network operator in Ireland, and seven examples of outages affecting individual local exchanges in areas with...

BACKGROUND Little is known about how power outages affect health. We investigated mortality effects of the largest US blackout to date, 14-15 August 2003 in New York, NY. METHODS We estimated mortality risk in New York, NY, using a generalized linear model with data from 1987-2005. We incorporated possible confounders, including weather and long-term and seasonal mortality trends. RESULTS D...

This paper presents a novel adaptive approach for scheduling updates in a data warehouse that processes “nearreal-time” data streams. Data is pushed to the warehouse from a variety of external sources with a wide range of inter-arrival times (e.g., once a minute to once a day). Due to network conditions, the volume of incoming data can widely vary and data streams can experience intermittent ou...

Cascading failures in electricity networks often result in large blackouts with severe social consequences. A cascading failure typically begins with one or more equipment outages that cause operating constraint violations. When violations persist in a network, they can trigger additional outages which in turn may cause further violations. This paper proposes a method for limiting the social co...

This paper focuses on the impact of extreme weather on power system outages. Extreme weather condition impacts of interest are listed, including both direct and consequential events. Their impact on power system outages are discussed, concerning both blackouts and component failure. Prospects for estimating weather condition impacts on the frequency of blackouts and on equipment and system fail...

Incident data about disruptions to the electric power grid provide useful information that can be used as inputs into risk management policies in the energy sector for disruptions from a variety of origins, including terrorist attacks. This article uses data from the Disturbance Analysis Working Group (DAWG) database, which is maintained by the North American Electric Reliability Council (NERC)...