Many real classification tasks are oriented to sequence (neighbor) labeling, that is, assigning a label to every sample of a signal while taking into account the sequentiality (or neighborhood) of the samples. This is...
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The interaction between electromagnetic radiation and infinite plane shield having finite thickness d, placed in free space in the plane waves region depends on material/shield macroscopic parameters (¿, ¿, ...
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The interaction between electromagnetic radiation and infinite plane shield having finite thickness d, placed in free space in the plane waves region depends on material/shield macroscopic parameters (¿, ¿, ¿), its thickness, radiation frequency and incidence angle. Lately, entirely new classes of materials have been developed. Knowing the characteristics and the behavior of nanomaterials inside different media creates wide opportunities for a variety of industrial applications. For that reason, a simple method to determine their electromagnetic field (EMF) attenuation properties is also necessary. This paper presents experimental methods for the investigation of nanomaterials behavior inside the EMF.
The problem of validating the specification of the control software of a simplified chemical reactor, expressed in the Sequential Function Chart(SFC) notation, is addressed in this work. Through this case study it is ...
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The problem of validating the specification of the control software of a simplified chemical reactor, expressed in the Sequential Function Chart(SFC) notation, is addressed in this work. Through this case study it is demonstrated a way of converting the SFC description to that of a Hybrid Automata System(HAS) and validating properties of the described system by integrating already available results in the theol)' of Hybrid Automata. Then, by synchronizing this HAS description with a HAS model of the controlled process and applying an algorithmic solution to the reachability problem of the combined HAS descriptions, it becomes possible to infer the satisfaction of the system properties that the equivalent SFC specifies.
The evolution of 60 GHz wireless networks using Orthogonal Frequency Division Multiplexing (OFDM) technique imposed requirements of increased processing in the baseband implementations. The current paper focuses on th...
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In this work, it is demonstrated that relatively simple image processing functions based on symmetry measurements can be used to obtain high performance vehicle authentication, creating an "image signature" ...
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ISBN:
(纸本)9788890314933
In this work, it is demonstrated that relatively simple image processing functions based on symmetry measurements can be used to obtain high performance vehicle authentication, creating an "image signature" for every vehicle. On that basis, distinctive parts of the vehicle frontal view such as the headlights and the logo area can be segmented. A novel neural network application, properly trained, provides adequate vehicle manufacturer recognition when used in conjunction with a previously developed license plate recognition module. It is also shown that image processing functions based on Scale Invariant Feature Transform (SIFT) measurements can be used to obtain high performance object features location, creating a keypoint fingerprint for every feature. A grid of SIFT keypoints was drawn and a neural network was used also for vehicle model recognition.
With the advent and rapid spread of microblogging services, web information management finds a new research topic. Although classical information retrieval methods and techniques help search engines and services to pr...
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A spatial phaser based on all-pass metasurfaces using Interconnected dielectric resonators is proposed for real-time-analog signal processing (R-ASP). The structure is simple to fabricate and is constructed from a sin...
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A spatial phaser based on all-pass metasurfaces using Interconnected dielectric resonators is proposed for real-time-analog signal processing (R-ASP). The structure is simple to fabricate and is constructed from a single dielectric layer using standard laser hole drilling processing. Its all-pass transmission response along with its transmission delay characteristics are also demonstrated using rigorous coupled-wave analysis (RCWA).
We study mathematical models and discuss optimization algorithms for the dimensioning of 3G multimedia networks. We propose two models which aims at dimensioning networks with both a radio and a core component. The fi...
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We study mathematical models and discuss optimization algorithms for the dimensioning of 3G multimedia networks. We propose two models which aims at dimensioning networks with both a radio and a core component. The first one is an anticipative one in which we assume that we know a priori the traffic over the planning period and the dimensioning is defined with a best possible call admission control procedure. The second one is a causal one in which we define an explicit call admission control procedure which makes the accept/reject decisions without any knowledge on the forthcoming traffic. We then compare, on an experimental basis, the dimensioning obtained by both models on some multi-service networks.
In the majority of analytical and imitation models analyzing the processes of communication networks functioning, input streams are associated with the well known Poisson's model, describing the most unfavorable c...
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In the majority of analytical and imitation models analyzing the processes of communication networks functioning, input streams are associated with the well known Poisson's model, describing the most unfavorable case of stationary random streams. In practice the input streams are characterized mainly with strong nonstationary processes, impacting the final results of modeling to a significant degree. Having this in mind this report presents an input stream model for simulation modeling and analysis of communication networks.
This paper presents a theoretical model to describe the progression of leading (falling) lightnings in storms (stepped leaders), moving down from their starting at the thundercloud base to they meet an upward streamer...
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This paper presents a theoretical model to describe the progression of leading (falling) lightnings in storms (stepped leaders), moving down from their starting at the thundercloud base to they meet an upward streamer. First, some existing models, related to the advance of leading lightnings, are described and then, a novel theory is presented. The model aims to explain the leader lightning progression as a succession of different steps, or branches, that form the typical tree-like shape through the air mass.
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