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.
Summary form only given. We introduce a model for information management in a world where information from the physical environment is gathered through a ubiquitous wireless networks. Thus the Internet information space and the physical environment become increasingly entangled in a tightly connected system, that we call a Smart Earth. We illustrate technical challenges and applications from the work...
Once recognized as the driving force in the process of information society buildup and as a major weapon against digital divide, a broadband success story has begun. Broadband access to telecommunication networks and services has been one of the key topics in modern telecommunications for a while. Although enabling technologies exist from 1980s, significant penetration of broadband in residential...
Summary form only given. Intellectual property can be protected in different ways, such as, for example, by patents, utility models, trademarks, designs, or copyrights. A patent grants exclusive rights to a patentee to prevent or exclude others from making, using, or selling the claimed invention. The rights are granted for a limited number of countries and for a limited time. The patent system is...
Self-organization is a phenomenon that has been observed in many real-life complex networks and the associated concepts have been utilized in various branches of science. As capacity requirements in transparent optical networks (TONs) increase, so does their complexity. This in turn makes designing scalable security mechanisms critical, particularly due to the high speeds and transparency inherent...
Among the promising solutions for next generation Internet backbones, one can consider the optical burst switching (OBS) technology. The deployment of the OBS technology needs to address dimensioning and resources optimization issues that constitute an essential task in the development of OBS services. In this paper, we propose a QoS-based approach to address these issues in the development of OBS...
A Web-based design and control system has been investigated for regional optical IP (Internet protocol) networks. The system can design lightpaths connecting nodes such that given traffic is groomed with minimum number of wavelengths, or give a reserve design with additional lightpaths to groom future traffic. Reconfigurable optical add/drop multiplexers (R-OADMs) were also investigated and manufactured...
A novel optical switch architecture comprising internal ring-like fiber interconnections is presented and discussed in this paper. The architecture allows optical packet and burst switching as well as multicasting directly in the optical domain by copying and forwarding of packets and bursts without wavelength conversion. We expect a reduction of packet/burst discard probability due to the ability...
The evolution of optical network devices such as optical cross-connects and optical amplifiers has provided a huge increase in the transmission capacity of optical links. However, this evolution also brings problems such as the large power imbalance arising with the transmission of several wavelengths that imposes a severe degradation to the optical signal. Recent research work shows how to adapt...
The evolution of optical network devices such as optical cross-connects and optical amplifiers has provided a huge increase in the transmission capacity of optical links. However, this evolution also brings problems such as the large power imbalance arising with the transmission of several wavelengths that imposes a severe degradation to the optical signal. Recent research work shows how to adapt...
The advancement of traffic makes world more and more internationalized and increases frequency of communication between people who come from different cultures. Differences in their conversation go beyond the languages they speak to the non-verbal behaviors they express while talking. To improve the abilities of the embodied conversational agents (ECAs) while interacting with human users we are working...
This paper deals with an event based multi-agent system simulator. Agents in the simulator are based on the mobile agent network formal model. The paper explains parts of the simulator such as operations, agents, nodes, network elements, etc. and how they work. In order to verify the simulation results, they were compared with the performance characteristics of a real multi-agent system, called the...
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.