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Emails are the basic unit of internet applications. Many emails are sent & received everyday with an exponential growth day by day but spam mail has become a very serious problem in email communication environment. There are number of content-based filter techniques available namely text based, image based filtering and many more others to filter spam mails. These techniques are costlier in respect...
The WTFast’s Gamers Private Network (GPN R ) is a client/server solution that makes online games faster. GPN connects online video-game players with a common game service across a wide-area network. Online games are interactive competitions by individual players who compete in a virtual environment. Response time, latency and its predictability are keys to GPN success and runs against the vast complexity...
The usage of energy storage devices in data centers has been widely studied for the purpose of peak shaving in the context of dynamic utility pricing. To effectively achieve peak shaving in a data center with energy storage capability, a joint optimization framework is proposed to solve the task assignment problem and the energy storage management problem. The power hierarchy of a data center is modeled...
As multimedia traffic provides the dominating data flows on Internet channels nowadays, on-demand video streaming has also grown in popularity. Users watching on-demand streams are interested in receiving their video streams without interruption and at low cost. To achieve this, video providers need to build computational infrastructure that can adapt to changes in demand. This paper presents an architecture...
Novel cloud computing technology makes multiplayer cloud gaming a reality, where players play games that do not run on local devices, but on servers in the cloud. Nevertheless, the necessary communication between player's local device and cloud server increases the response delay of the gaming session. Besides the degrade of responsiveness, the inter-player delay, which is the difference of response...
Temperature prediction can enhance datacenter thermal management towards minimizing cooling power draw. Traditional approaches achieve this through analyzing task-temperature profiles or resistor-capacitor circuit models to predict CPU temperature. However, they are unable to capture task resource heterogeneity within multi-tenant environments and make predictions under dynamic scenarios such as virtual...
The combination of data center servers and electric vehicles (EVs) for grid regulation has attracted more attention in recent years. However, state of the art solutions have focused on utilizing charging stations but ignored the emerging battery swapping stations. In this paper, we argue that EV battery swapping stations may play an important role in smart grid regulation as well, especially when...
Electrophysiological simulations are computationally expensive tasks. These kinds of simulations are usually run on super-computers or clusters, which may be expensive or difficult to access. In this work we present DENIS@Home, a simulation platform that follows the Volunteer Computing paradigm. DENIS@Home is based on BOINC, a volunteer computer environment used worldwide, and on Cell ML, an open...
In protein structure, knot is a vital part. Structures that contain a knot formed by the path of the polypeptide backbone represent some of the most complex topologies observed in proteins. Detecting these knots, we hope to find out some information or chances to cope with protein malfunction or abnormalities. There are some state of the art algorithms to find knot in a protein structure e.g. KNOT...
With the popularity of cloud computing technology, service hosting is used as a typical model to deploy different kinds of services on cloud platform. In recent years, how to effectively provide resources for service hosting has attracted more and more attention. However, most of the existing works only focused on how to effectively provide virtual machines for service hosting. They ignored how to...
This paper tackles the problem of impulsive observer design for the class of linear time invariant system with sampled outputs. The proposed design approach includes continuous-time evolution and discrete jumps at specified time instants. The resulting observer is capable to track the system states in a predefined finite time. The estimation error is shown to be uniformly exponentially stable for...
The article discusses the utilization of the service oriented architecture using the web service for creating the mathematical models in the area of processing the raw materials. In the introduction there are described objects and processes from the area of processing the raw materials and there is described the creation of their mathematical models. There are analysed the resources for creating mathematical...
Rural networking connectivity is a very dynamic and attractive research field. Nowadays big IT companies like Google and Facebook are working to help connect all these rural disconnected people to Internet. Our research work is another effort in this direction. We are building a new solution based on previously tested ideas that can bring no real-time Internet connectivity to rural users using Delay/Disruption...
In this paper we study a revenue maximization problem for optical routing nodes. We model the routing node as a single server polling model with the aim to assign visit periods (service windows) to the different stations (ports) such that the mean profit per cycle is maximized. Under reasonable assumptions regarding retrial and dropping probabilities of packets the optimization problem becomes a separable...
Due to missing IP multicast support on an Internet scale, over-the-top media streams are delivered with the help of overlays as used by content delivery networks and their peer-to-peer (P2P) extensions. In this context, mesh/pull-based swarming plays an important role either as a pure streaming approach or in combination with tree/push mechanisms. The crucial impact of today's variety of client systems...
Location-based routings for Vehicular Ad-hoc Networks (VANETs) use location information in routing decisions. However, location-based routing protocols need location services to query the location information of the communication partner node so that packets could be forwarded properly. In this paper, we propose a proactive flooding-based location service which name is Semi-Flooding Location Service...
The occupancy of the pending interest table (PIT) in content-centric networks (CCN) and other information-centric networking (ICN) architectures has an undeniable effect on the congestion level and the performance of the network. Each interest packet forwarded upstream by a node results in at most one data packet arriving back at the node and being possibly forwarded to many interfaces downstream...
Content-Centric Networking (CCN) is a novel networking paradigm that treats the named contents, not the hosts, as the first-class citizens of the network. In the forwarding plane, CCN employs a stateful forwarding scheme, which maintains per-packet state information in Pending Interest Table (PIT). By employing stateful forwarding, CCN enables native support for content requests aggregation and multicast...
Matrix inversion is a fundamental operation to solve linear equations for many computational applications. However, it is a challenging task to invert large-scale matrices of extremely high order (several thousands), which are common in most of web-scale systems like social networks and recommendation systems. In this paper, we present a LU decomposition based block-recursive algorithm for large-scale...
Issues in Energy Efficiency of Data Centers (DC) are important, due to the cumulative effects of the increase in the DCs number and in the energy consumption per center. Developing new design recommendations to improve a cooling system efficiency, commonly quantified by the PUE metric (Power Usage Effectiveness) is one objective of the Green IT organizations. For existing DCs, without considering...
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