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.
In this paper we propose a quantitative model to study user satisfaction level in online video streaming, which features great variety across video access sessions under the impact of network conditions and user-specific factors. By applying survival analysis to video session duration ratio, which in our study is regarded to be a measure of user satisfaction level, we find user satisfaction is not...
The phenomenon of online social networks reaches millions of users in the Internet nowadays. In these, users present themselves, their interests and their social links which they use to interact with other users. We present in this paper LifeSocial.KOM, a p2p-based platform for secure online social networks which provides the functionality of common online social networks in a totally distributed...
Cooperation enables single devices or applications to establish systems that exceed the capabilities of single entities. A prime example for cooperation are Wi-Fi-sharing networks, in which multiple parties cooperatively share their resources, such as wireless access points and Internet uplinks, to form a large-scale Wi-Fi network that offers access to mobile users. Mobile users benefit from this...
Handover management becomes an increasingly important component of the emergent mobile Internet by maintaining mobile user's data sessions alive in the presence of user mobility. The great impact handover has on Quality of Service makes it a crucial factor in maintaining mobile user's Quality of Experience at a high level. This paper evaluates the Quality of Multimedia Streaming metric proposed by...
The rising popularity of cloud computing makes building high quality cloud applications a critical and urgently required research problem. Component quality ranking approaches are crucial for making optimal component selection from a set of functionally equivalent component candidates. Moreover, quality ranking of cloud components helps the application designers detect the poor performing components...
Being able to make objective Quality of Service (QoS) judgments or assessments is a challenging and crucial activity. The process of making these assessments is compounded when the environment in which the assessments have to be made are virtual; in the sense the interacting parties might not have necessarily met with each other physically. In a broad sense Quality of Service assessments could be...
In order to measure the quality of cloud services better, this paper proposes a measurement method, which mainly measures the quality of cloud services from two aspects: availability and performance. At the same time, it introduces a measurement framework based on plug-in. The framework can collect service information and calculate the quality of cloud services with the measurement method. It can...
P2P-TV systems will certainly contribute to revolution the broadcast TV paradigm allowing ubiquitous access to a practically unlimited number of channels, representing an important step forward in the direction of the Anything/Anyone/Anywhere/Anytime communication paradigm of future Internet applications. Since its deployment, P2P-TV has already attracted millions of users and it is expected that...
Mobile internet has rapidly evolved in the past years with an ever increasing number of novel technologies and services. Today's mobile devices often support multiple communication technologies for accessing Internet services. However, they all do not tap the full potential of these capabilities as users often have to manually select networks and only one network is used at a time. Different approaches...
In Cloud computing, users with different service requirements often need to negotiate with service provider via Service Level Agreement (SLA). The unique pay-as-you-go billing way in Cloud computing challenges resource provisioning for service providers. In this paper, based on the Dirichlet multinomial model, we present an efficient reputation-based QoS provisioning scheme, which can minimize the...
Services that offer users the possibility of transmitting their own live streaming video content, using Web 2.0-based platforms, are increasing in popularity. In this context, we propose and evaluate solutions that contribute to improve the scalability of this type of system. This work encompasses two major steps. First, we collected data from a popular online live video sharing service, and provide...
Cloud computing promises to provide high performance, on-demand services in a flexible and affordable manner, it offers the benefits of fast and easy deployment, scalability and service oriented architecture. It promises substantial cost reduction together with increased flexibility than the traditional IT operation. Cloud service providers typically come with various levels of services and performance...
Network attacks occur in high proportion on the internet, thus aside from security as a means of defense there is a need for being able to detect attacks as they occur so that measures can be put in place to tackle them. For this, an intrusion detection system (IDS) is required that has good quality of detection capability. We propose Quality of Detectability (QoD) as a kind of Quality of Service...
The continuous growth in both commercial and public network traffic with various quality-of-service (QoS) requirements is calling for better service than the Internet's best effort mechanism. One of the challenging issues is to predict the overall behavior of aggregate network traffic. While network traffic characterization has been studied extensively due to its importance in network scheduling and...
There is an increasing acceptance for Wireless Mesh Networks (WMN) as the potential `last-mile' access technology running media-rich applications with stringent quality of service (QoS) requirements. As WMNs are envisioned to provide high bandwidth broadband services to a large community of users, the Internet Gateway which acts as a central point of attachment for the mesh routers is likely to be...
With the increase in popularity experienced by Web 2.0 applications both for personal and for business use, there is a need to study how Web 2.0 changes traffic patterns and what is the impact of Web 2.0 applications on the underlying network and server infrastructure. This paper proposes as measurement-oriented traffic characterization method that can be used for this purpose. This method is focused...
Server load balancing is indispensable in World Wide Web for providing high-quality service. In server load balancing, since the server loads and capacities are not always identical, traffic should be distributed by measuring server performance to improve the service quality. This paper proposes a load balancing technique conducted by passive measurement, which estimates the server performance through...
The following topics were dealt with: optimized network design; quality of service and resource control; future Internet; quality of experience and applications; ad hoc and sensor networks; wireless networks; measurement and modeling; overlay networks.
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.