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 the earlier work authors have shown that prior knowledge neural approach can be successfully applied for bias dependent noise modelling of microwave transistors, which is very applicable in the cases where there are no enough data to develop pure black-box neural models. In this paper the mentioned model is extended to a class of devices made in the same technology but differing in the gate width...
This paper presents what, in the vision of the author, will be next-generation metamaterials for microwave systems. For this purpose, it first introduces some fundamentals on metamaterials and describes the different types of currently existing metamaterial structures, called micro-scale metamate-rials, in reference with their typical smallest dimension. Upon this basis, it presents a few micro-scale...
Metamaterial like EBG (Electromagnetic Band Gap) structures are used in slotted microstrip antenna and mobile handset applications for increasing efficiency and better return loss characteristics. As we know that traditional microstrip antennas have inferior feature in case of bandwidth. In this paper an antenna with slotted ground plane and patch has been developed in which EBG structure is used...
This paper presents the S-Commerce Framework (SC-F) that weaves social elements into mobile commerce. The SC-F consists of three blocks referring to consumers, providers, and brokers, and ensures their connection through different relationships that are then mapped onto social networks. Examples of relationships include competition, referral, and loyalty. This paper, also, discusses the Smart Mobile...
This paper proposes a method for comprehensive, objective image quality characterisation using an image quality evaluation framework based on gradient information representation. The method provides an in-depth analysis of image quality by quantifying: common information, information loss and information artifacts. The results demonstrate and quantify a number of well known issues and provide a useful...
In this paper, a numerical three-dimensional (3D) model of electromagnetic left-handed metamaterials (LH MTM) is used to describe composite right-left handed (RLH) structures with graded refractive index profile commonly named GRIN MTM. The model is developed by using the Transmission Line Matrix (TLM) Z-transform method and Drude model to account for dispersive LH MTM properties in the time-domain...
This paper presents a new algorithm to suppress impulse noise in still images, which allows removal of up to 90% noise. The paper is focused on two directions: performance evaluation of the new algorithm comparing with existing algorithms and evaluating the possibility to implement this algorithm in real time, for video clips, using the family of digital signal processors BF5xx signal (Analog Devices...
Implementation of a sophisticated ERP system into a heterogeneous academic environment like universities is far from being a trivial task. The question of integration as a serious risk factor should not be neglected. That is why strategic planning of the integrated business-information system (IBIS) have a crucial importance as a link between academic strategy and business strategy.
In this paper we present an approach to developing web portal for adaptive e-learning. Educational web portal is single access point to all relevant information, resources and applications in the education process. Web portal integrates different functionalities and services for adaptation of e-learning courses with existing learning management system Moodle. Integration includes: educational web...
University and faculty members spend much of their time on scientific discovery and research. Scientific papers, as product of their extensive work, are used not only for their acknowledgement in academic circles, but also as a term of their promotion, tenure or reapplication. Most of the time, composing the list of references on published work turns into a long-lasting activity. Instead of manually...
This paper reports on two approaches to teach master students in telecommunications to execute an industrial oriented project as a team. To guarantee the educational value, it is motivated that a strong involvement by faculty staff in the project definition is essential.
In this paper is presented one new approach for efficient still image compression based on the Karhunen-Loeve color transform and the Inverse Pyramid decomposition. In result of the strong decorrelation between the color components after the transform, the image is successfully restored with retained image quality despite the significant reduction of the coefficients, used to compose the pyramidal...
The paper presents a model of Parlay X gateway used for evaluation of its performance. The model considers traffic of different priorities generated by the service providers and the network which have to be served. It takes into account the distributed architecture of the Parlay X gateway and applies mechanisms for admission control and load balancing to prevent overloading. The gateway utilization...
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.