The relationship between broadcast TV stations’ ownership characteristics and the quantity of news and public affairs programming they provided is examined, based on the scheduled programming of almost all full power broadcast TV stations for two weeks a year for the four-year period 2002 to 2005. Using a three-way group fixed effects model to control for unobserved market-specific, broadcast n...

The objective of the study is to propose and test a model to understand the factors that impact the use of electronic media in Brazil. A survey was conducted, capturing perceptions about five electronic media – Broadcast TV, Pay-TV, Internet, Mobile Phones and Game Consoles. A sample of 1000 cases was collected by personal interviews in six cities and analyzed using SEM. Attitude is influenced ...

With the technological advancement in wireless applications more effective and efficient utilization of the available spectrum became the urgent requirement. According to the IEEE 802.22 standard the unlicensed secondary devices can operate in the licensed TV band, because this is the high underutilized licensed band, so long they do not interfere the licensed primary users. Therefore the secon...

The status of the Rossendorf superconducting RF gun is discussed. This gun allows continuous wave operation with an energy of 9.5 MeV and an average current of 1mA. The 31⁄2 cell niobium cavity contains a normal conducting photocathode. A special choke flange filter at the cathode side prevent the RF leakage of the cavity. The design of the cavity, the tuner, the RF coupler the LHevessel togeth...

In this paper we present a conceptual framework for parameter tuning, provide a survey of tuning methods, and discuss related methodological issues. The framework is based on a three-tier hierarchy of a problem, an evolutionary algorithm (EA), and a tuner. Furthermore, we distinguish problem instances, parameters, and EA performance measures as major factors, and discuss how tuning can be direc...

The matrix powers kernel, used in communication-avoiding Krylov subspace methods, requires runtime auto-tuning for best performance. We demonstrate how the SEJITS (Selective Embedded Just-InTime Specialization) approach can be used to deliver a high-performance and performance-portable implementation of the matrix powers kernel to application authors, while separating their high-level concerns ...

The performance of Support Vector Machines, as many other machine learning algorithms, is very sensitive to parameter tuning, mainly in real world problems. In this paper, two well known and widely used SVM implementations, Weka SMO and LIBSVM, were compared using Simulated Annealing as a parameter tuner. This approach increased significantly the classification accuracy over the Weka SMO and LI...

Unexpected yet highly remarkable and intriguing observations of the polymer-enhanced electro-catalytic activity of the Pt nanoparticles for electro-oxidations of both methanol and formic acid were reported. In situ FTIR investigation suggests strongly that the observed activity enhancements are highly likely due to the PVP-induced additional reaction pathways. These observations may open up a n...

The paper presents an analysis of scientific and practical development software-configurable radio monitoring module based on RTL2832U tuner in Simulink environment order to scan a given ultra-short-wave (VHF) frequency range perform automatic search, counting output the number broadcasting stations. Given is structural circuit diagram modernized SDR-receiver (Software Defined Radio) with inclu...

This paper integrates different novel concepts to perform eye-to-hand coordination and manipulation to realise a working robot named COERSU. One of the salient features of our system is that it is not highly dependent to the camera-robot calibrations. Our coarse-calibrated eye-to-hand visual servoing uses monocular vision and primitive tactile information to extract 3D information of the scene....