A metadata server, DIMES (Distributed MEtadata Server), and a data and analysis server, GDS (GrADS/DODS Server), are integrated to form a Metadata Integrated Data Analysis Server (MIDAS) for interactive access to both...
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A metadata server, DIMES (Distributed MEtadata Server), and a data and analysis server, GDS (GrADS/DODS Server), are integrated to form a Metadata Integrated Data Analysis Server (MIDAS) for interactive access to both metadata and data. The power of MIDAS is reflected by the consistency between the data server and the metadata server and by the closely coupling between them. Middle layers are added to combine the server systems and to help users to generate GDS URLs. Therefore, MIDAS provides seamless way to search, access, and analyze the ever-increasing distributed Earth observing and model data. MIDAS is planed to be used in an operational mode. Various modifications and enhancements on performance, on query implementations, and on interfaces are carried out based on users' recommendations. In this article, we will summarize the recent enhancements on MIDAS, and discuss existing issues for a potential operational usage.
Future 5G communication will rely on edge computing to meet diverse Quality of Service Requirements, in particular, end-to-end latency in the order of milliseconds. Placing edge clouds requires solving a large-scale s...
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ISBN:
(纸本)9781728105680
Future 5G communication will rely on edge computing to meet diverse Quality of Service Requirements, in particular, end-to-end latency in the order of milliseconds. Placing edge clouds requires solving a large-scale set cover problem. We show how the challenge posed by the size of the problem can be overcome through GPU accelerated Natural Evolutional Strategies (NES). We present a system that allows the evaluation of technology choices, latency requirements and locations that should be covered at the example of the United States.
Glass fibre reinforced plastics are used frequently for corrosion resistant duties but problems have arisen with such equipment. A new technique, which utilises radio labelled diffusants, allows the construction of co...
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Glass fibre reinforced plastics are used frequently for corrosion resistant duties but problems have arisen with such equipment. A new technique, which utilises radio labelled diffusants, allows the construction of concentration profiles of the liquid in the polymer and diffusion coefficients can be calculated from short-term data. Application of this method has given a picture of the way in which water and 2 molar hydrochloric acid diffuse into vinyl ester based glass reinforced laminates. The effects of stress and damage on diffusion patterns have been quantified, as have the effects of these environments on creep behaviour.
If scalar frequency domain measurements are to be used to generate time domain information, some method must be used t o encode phase information as received power. This is achieved in the comparison reflectometer Ill...
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If scalar frequency domain measurements are to be used to generate time domain information, some method must be used t o encode phase information as received power. This is achieved in the comparison reflectometer Ill using a large, frequency invariant reference reflection which i s introduced at the reference plane.
Wave Intensity Analysis (WIA) is a relatively new technique for the analysis of high frequency structural vibration. In earlier studies the method has been applied to fairly simple structural geometries;in the present...
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Wave Intensity Analysis (WIA) is a relatively new technique for the analysis of high frequency structural vibration. In earlier studies the method has been applied to fairly simple structural geometries;in the present work a methodology is presented for the general computer implementation of the method, which allows the analysis of a wide range of built-up structures. Example results are presented for a satellite-type structure, and a comparison is made with exact results yielded by the dynamic stiffness method.
The process of discovering relevant patterns holding in a database, was first indicated as a threat to database security by O' Leary in [20]. Since then, many different approaches for knowledge hiding have emerged...
ISBN:
(纸本)9781424408313
The process of discovering relevant patterns holding in a database, was first indicated as a threat to database security by O' Leary in [20]. Since then, many different approaches for knowledge hiding have emerged over the years, mainly in the context of association rules and frequent itemsets mining. Following many real-world data and applications demands, in this paper we shift the problem of knowledge hiding to contexts where both the data and the extracted knowledge have a sequential structure. We provide problem statement, some theoretical issues including NP-hardness of the problem, a polynomial sanitization algorithm and an experimental evaluation. Finally we discuss possible extensions that will allow to use this work as a basic building block for more complex kinds of patterns and applications.
The user modelling technique known as personas has obtained excellent results over the last years. Literature about this theme shows different forms of using the concept of personas in the moment of software conceivin...
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ISBN:
(纸本)9789897580291
The user modelling technique known as personas has obtained excellent results over the last years. Literature about this theme shows different forms of using the concept of personas in the moment of software conceiving, however, the good results obtained with this technique allow to catch a glimpse of a more diverse use of this method. In this context, this study performed a usability evaluation method of Facebook's privacy configurations, the most popular social network worldwide, aiming to verify the use of the personas concept as a usability assessment technique.
A method of the controlled effect by the electric fields on Coulomb structures in the linear electrodynamic trap for the controlled compression and stretching of these structures was proposed. The obtained images of t...
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A method of the controlled effect by the electric fields on Coulomb structures in the linear electrodynamic trap for the controlled compression and stretching of these structures was proposed. The obtained images of the Coulomb structures at various frequencies of effect by rectangular pulses of the electric field are presented. Such effects can be used to obtain the thermodynamic properties of the Coulomb structures by the statistical method.
Neural activity is dynamic at various spatiotemporal scales. We consider a general class of latent variable models for analyses of neuronal ensemble spikes. Specifically, the latent variable follows a Markovian dynami...
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Neural activity is dynamic at various spatiotemporal scales. We consider a general class of latent variable models for analyses of neuronal ensemble spikes. Specifically, the latent variable follows a Markovian dynamics, and the observations are modulated by the latent state variable through an assumed or unknown mapping function. The inference of latent variable models lead to novel solutions for unsupervised decoding analysis, data visualization, variable and model selection. We propose two unsupervised analysis paradigms and assess the validity of the proposed approaches by computer simulations and experimental population spike data recorded from monkey's primary motor cortices during orofacial movement.
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