4,161 research outputs found
Análise de resíduos organofosforados em óleos essenciais cítricos brasileiros utilizando CG-EM-MSI.
Análise de resíduos organoclorados em óleos essenciais cítricos brasileiros utilizando CG-EM-MSI.
Two new species of Daidalotarsonemus (Acari: Prostigmata: Tarsonemidae) from Brazil
International audienceTwo new tarsonemid species, Daidalotarsonemus esalqi sp. n. and Daidalotarsonemus savanicus sp. n., found on both native and crop plants in Brazil are described herein, based on adult females. Biological aspects of these species are briefly discussed. Individuals of Daidalotarsonemus savanicus sp. n. have been misidentified as Daidalotarsonemus tessellatus De Leon in previous reports of this species from Brazil. A key is provided to distinguish females of the Daidalotarsonemus species known to occur in Brazil
Unified radio and network control across heterogeneous hardware platforms
Experimentation is an important step in the investigation of techniques for handling spectrum scarcity or the development of new waveforms in future wireless networks. However, it is impractical and not cost effective to construct custom platforms for each future network scenario to be investigated. This problem is addressed by defining Unified Programming Interfaces that allow common access to several platforms for experimentation-based prototyping, research, and development purposes. The design of these interfaces is driven by a diverse set of scenarios that capture the functionality relevant to future network implementations while trying to keep them as generic as possible. Herein, the definition of this set of scenarios is presented as well as the architecture for supporting experimentation-based wireless research over multiple hardware platforms. The proposed architecture for experimentation incorporates both local and global unified interfaces to control any aspect of a wireless system while being completely agnostic to the actual technology incorporated. Control is feasible from the low-level features of individual radios to the entire network stack, including hierarchical control combinations. A testbed to enable the use of the above architecture is utilized that uses a backbone network in order to be able to extract measurements and observe the overall behaviour of the system under test without imposing further communication overhead to the actual experiment. Based on the aforementioned architecture, a system is proposed that is able to support the advancement of intelligent techniques for future networks through experimentation while decoupling promising algorithms and techniques from the capabilities of a specific hardware platform
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