The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper focus on the use of unmanned aerial vehicle teams for performing cooperative perception using Data Distribution Service (DDS) Network. We develop a DDS framework to manage the incoming and out bounding network traffic of multiple types of data that is exchanged inside the UAV network. Experimental results both in laboratory and in actual flight are presented to help characterize the proposed...
Adopting new technologies in smart grid (SG) enables the improvement of reliable communication. A key factor for SG efficiency is reliable data exchange between different components and domains in the system. SG must allow remote and quick reaction for different events. This is not a trivial task especially with large scale power grids, which requires SG to have a reliable communication protocol....
Nowadays, the Internet of Things (IoT) paradigm is expanding immensely. It brings ubiquitous intelligence through the interconnection of equipment (sensors, devices, etc.) to the Internet, allowing the birth of a new era of applications in various fields. One of the main challenges to be considered in the IoT is the Quality of Service (QoS) issue. Aiming to support the vision of an autonomic Middleware-level...
Large-scale cyber-physical systems (CPS) in mission-critical areas such as transportation, health care, energy, agriculture, defense, homeland security, and manufacturing, are becoming increasingly interconnected and interdependent. These types of CPS are unique in their need to combine rigorous control over timing and physical properties, as well as functional ones, while operating dynamically, reliably...
With the rising popularity of Internet-enabled mobile devices, users are increasingly demanding better quality of service (QoS). However, the resources of these devices and their connectivity levels remain insufficient, even though they are improving, for offering acceptable levels of QoS to users. Cloud computing infrastructures offer large and scalable resources that allow shifting the physical...
Today smart grids are an essential tool for efficient management and monitoring of electric power. Computer technologies are used to optimize the production and distribution of electrical energy in order to balance supply and demand between producers and consumers and ensure better services. In this paper we propose an ontology-based distributed architecture for supervision and control of Smart Grids...
The area of information and communication technology is in the phase of transformation from the generation of personal computers and wired internet services to a new generation which is supported by portable devices like smart phones. Due to this generation change we can access data wirelessly anywhere anytime using mobile internet. In 1991, Mark Weiser depicted an idea about the 21st century computing...
Modern companies must be able to react in a timely way to changes in production and financial information since quick responses provide advantages against competition. As a matter of example, in automated trading systems a delay of 1 ms may be worth $1M. In addition, nowadays business decisions are made on the basis of increasing volumes of information, complicating the adoption of decisions on time...
While Wireless Sensor Networks (WSN) are starting to become more popular and used for many applications, developing these applications is still not a trivial task due to many technical challenges such as limited hardware capabilities, communication, and energy resources; high heterogeneity; security; and quality of service (QoS) issues. Recently Service-Oriented Middleware (SOM) has become a preferred...
This paper describes the different communication patterns followed in industrial communications and maps them into DDS (Data Distribution Service) which is a recent middleware specification. This specification follows the publisher/subscriber paradigm and it is characterized by providing an API that allows tuning the QoS (Quality of Service) of the applications with a large set of parameters. This...
Wireless sensor and actor networks are becoming a basis for a rapidly increasing range of applications in industrial measurement-control (M&C) systems. Each application has different requirements in terms of M&C task, node functionalities, network size, complexity and cost; therefore, it is worthwhile time investment to design and implement a middleware for wireless sensor and actor...
Service Level Agreements (SLA) are commonly used to define terms and conditions of service provisioning. WS-Agreement is an SLA specification that addresses the need of both producers and consumers of services to specify and negotiate terms and conditions of access to these services. This specification has gained wide acceptance in both the Grid computing and Web Services communities. WS-Agreement...
Guaranteeing quality of service (QoS) for event delivery has been recognized as an important but challenging issue in event based middleware (EBM), that is responsible for routing events from publishers to subscribers over an event broker network. Amongst the numerous QoS parameters, in our work, we focus on reliability as a service guarantee to subscribers in an EBM. We add to the existing body of...
In SOA, services may become volatile and fail to deliver the quality of service as requested by users. In this paper, we present an approach for repairing failed services by replacing them with new services and ensuring the new service process still meets the user specified end-to-end QoS constraints. An iterative structural inspection algorithm is designed to produce reconfiguration regions that...
Planning (for example choosing most suitable services for self-configuration) is one important task in self-management for pervasive service computing, and can be reduced to the problem of multi-objective services selection with constraints. Genetic algorithms (GAs) are effective in solving such multi-objective optimization problems, and are one of the most successful computational intelligence approaches...
CORBA Notification Service extends Event Service with new characteristics of structured event, communication reliability, filter mechanism, QoS and so on. It makes CORBA have more message-oriented middleware features, and provides better assurance for the communication process. This paper illustrates some new characteristics of CORBA Notification Service. A filter mechanism is proposed to implement...
In this paper, we propose a scheduling framework and related algorithms for processing large-scale, computation-intensive divisible loads. The framework is organized into a two-level tree architecture. Based on this framework, admission test and load partitioning and distribution algorithms are designed to ensure that the multi-dimensional QoS requirements, i.e. processing deadline, security and reliability,...
Middleware for timely and reliable data dissemination is a fundamental building block of the event driven architecture (EDA), an ideal platform for developing air traffic control, defense systems, etc. Many of these middlewares are compliant to the data distribution service (DDS) specification and they have been traditionally designed to be deployed on managed environments where they show predictable...
This paper reports on the fifth International Workshop on Emerging Technologies for Next-generation GRID (ETNGRID), held within the WETICE conference in 2008. The content describes the main topics of the ETNGRID workshop as well as a summary of the main contributions about the papers that each author has presented to the workshop attendees. On each paper, the following comment will highlight the value...
This paper describes a benchmarking workload model for business process execution language (BPEL) engines for Web services. The proposed model is based on simulation of real world traffic conditions by defining a set of requirements which best characterize the end-users. The performance characteristics are evaluated on top of collected measurements such as success/fail rate, response times or round-trip...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.