Los principales instrumentos de la música caribeña incluyen congas, bongos, steel drums, claves, maracas, güiro, tiple de Puerto Rico y tambú bambú de Trinidad y Tobago.
Energy Efficiency of MIMO-OFDM Communication SystemIJERA Editor
With the ever increasing number of subscribers and their seemingly “greedy” demands for high-data-rate services, the next generation networks will have to provide global connectivity to ensure success. So the combination of multiple-input multiple-output (MIMO) signal processing with orthogonal frequency division multiplexing (OFDM) is regarded as a promising solution for enhancing the data rates of next-generation wireless communication systems operating in frequency-selective fading environments. Therefore hybrid architecture between terrestrial and satellite networks based on MIMO-OFDM with frequency reuse is employed here. However, this frequency reuse introduces severe co-channel interference (CCI) at the satellite end. To mitigate CCI, we propose an OFDM based adaptive beamformer implemented on-board the satellite with pilot reallocation at the transmitter side. The system performance is simulated by using the software MATLAB, the experimental result shows that the MIMO-OFDM communication system has better performance when compared.
Energy Efficiency of MIMO-OFDM Communication SystemIJERA Editor
With the ever increasing number of subscribers and their seemingly “greedy” demands for high-data-rate services, the next generation networks will have to provide global connectivity to ensure success. So the combination of multiple-input multiple-output (MIMO) signal processing with orthogonal frequency division multiplexing (OFDM) is regarded as a promising solution for enhancing the data rates of next-generation wireless communication systems operating in frequency-selective fading environments. Therefore hybrid architecture between terrestrial and satellite networks based on MIMO-OFDM with frequency reuse is employed here. However, this frequency reuse introduces severe co-channel interference (CCI) at the satellite end. To mitigate CCI, we propose an OFDM based adaptive beamformer implemented on-board the satellite with pilot reallocation at the transmitter side. The system performance is simulated by using the software MATLAB, the experimental result shows that the MIMO-OFDM communication system has better performance when compared.
A Comparative Study on Compressive and Flexural Strength of Concrete Containi...IJERA Editor
Concrete is the most widely used material in the world today. This paper is about the comparative study of the flexural strength and compressive strength of concrete when different admixtures are used as partial replacement of cement in the concrete mix. The mineral admixtures that are used here are Silica Fume, Rice Husk Ash and Iron slag as partial replacement of cement. All these materials are industrial waste products and are abundantly available nowadays. These materials have high silica content and pozzolanic properties and can be effectively used as a replacement of cement during the formation of High Performance Concrete. Compressive and Flexural strength are the two most important characteristic of concrete and are calculated for the hardened concrete to analyze the load bearing capacity for design purposes. Thus for the effective judgment of type of mineral admixtures to be used a comparative study is very useful.
O Plano de Ação Nacional para a Conservação dos Rivulídeos Ameaçados de Extinção – PAN Rivulideos, tem como objetivo Estabelecer mecanismos de proteção aos rivulídeos deste PAN e anular a perda de hábitat das espécies focais em cinco anos.
O PAN é composto por um objetivo geral, 4 (quatro) objetivos específicos e 55 (cinqüenta e cinco) ações, cujo coordenação caberá ao Centro Nacional de Pesquisa e Conservação de Peixes Continentais – CEPTA.
Fonte: http://www.icmbio.gov.br
Visite: http://www.aquaa3.com.br
A Comparative Study on Compressive and Flexural Strength of Concrete Containi...IJERA Editor
Concrete is the most widely used material in the world today. This paper is about the comparative study of the flexural strength and compressive strength of concrete when different admixtures are used as partial replacement of cement in the concrete mix. The mineral admixtures that are used here are Silica Fume, Rice Husk Ash and Iron slag as partial replacement of cement. All these materials are industrial waste products and are abundantly available nowadays. These materials have high silica content and pozzolanic properties and can be effectively used as a replacement of cement during the formation of High Performance Concrete. Compressive and Flexural strength are the two most important characteristic of concrete and are calculated for the hardened concrete to analyze the load bearing capacity for design purposes. Thus for the effective judgment of type of mineral admixtures to be used a comparative study is very useful.
O Plano de Ação Nacional para a Conservação dos Rivulídeos Ameaçados de Extinção – PAN Rivulideos, tem como objetivo Estabelecer mecanismos de proteção aos rivulídeos deste PAN e anular a perda de hábitat das espécies focais em cinco anos.
O PAN é composto por um objetivo geral, 4 (quatro) objetivos específicos e 55 (cinqüenta e cinco) ações, cujo coordenação caberá ao Centro Nacional de Pesquisa e Conservação de Peixes Continentais – CEPTA.
Fonte: http://www.icmbio.gov.br
Visite: http://www.aquaa3.com.br
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