scholarly journals 3D Vibration Estimation from Ground-Based Radar

2018 ◽  
Vol 10 (11) ◽  
pp. 1670 ◽  
Author(s):  
Andrea Monti-Guarnieri ◽  
Paolo Falcone ◽  
Davide d’Aria ◽  
Giuseppe Giunta
Keyword(s):  
Data Processing ◽  
Time Scale ◽  
Ad Hoc ◽  
Full Scale ◽  
Radial Motion ◽  
Deformation Field ◽  
Linear Structures ◽  
Vibration Estimation

The paper proposes a method to estimate 2D/3D vibrations and displacements of mostly linear structures, like pipes, chimneys, towers, bridges from afar, based on synchronized Radars. The method takes advantage of Radar sensitivity to displacements to sense tiny deformations (up to tens of micron) with a time scale from milliseconds to hours. The key elements are: (a) The use of calibrators to remove at once both the tropospheric turbulence and the effect of radial motion, and (b) the compensation of interferences from fixed targets. The latter is performed by estimating and removing the contribution of interfering targets, based either on a proper data processing or by exploiting an ad-hoc motorized calibrator. Performance in terms of accuracy of the deformation field is evaluated theoretically and checked by tests carried out in laboratories and by full-scale acquisition campaigns.

Ad-Hoc Parallel Data Processing on Pay-As-You-Go Clouds with Nephele

2013 ◽  
pp. 191-218
Author(s):  
Daniel Warneke
Keyword(s):  
Cloud Computing ◽  
Data Processing ◽  
Ad Hoc ◽  
Cluster Systems ◽  
Software Frameworks ◽  
Homogeneous Cluster ◽  
Processing Cost ◽  
Parallel Data ◽  
The One ◽  
Processing Framework

In recent years, so-called Infrastructure as a Service (IaaS) clouds have become increasingly popular as a flexible and inexpensive platform for ad-hoc parallel data processing. Major players in the cloud computing space like Amazon EC2 have already recognized this trend and started to create special offers which bundle their compute platform with existing software frameworks for these kinds of applications. However, the data processing frameworks which are currently used in these offers have been designed for static, homogeneous cluster systems and do not support the new features which distinguish the cloud platform. This chapter examines the characteristics of IaaS clouds with special regard to massively-parallel data processing. The author highlights use cases which are currently poorly supported by existing parallel data processing frameworks and explains how a tighter integration between the processing framework and the underlying cloud system can help to lower the monetary processing cost for the cloud customer. As a proof of concept, the author presents the parallel data processing framework Nephele, and compares its cost efficiency against the one of the well-known software Hadoop.

Production of French close rounded vowels by Spanish learners

2018 ◽  
pp. 381-394
Author(s):  
Isabelle Racine ◽  
Sylvain Detey
Keyword(s):  
University Students ◽  
Data Processing ◽  
Research Program ◽  
Ad Hoc ◽  
Contextual Information ◽  
Methodological Approach ◽  
Production Data ◽  
Speech Data ◽  
Acoustic Analyses ◽  
Survey Protocol

This chapter introduces the corpus-based L;2 French phonology research program Interphonologie du Français Contemporain (IPFC, Interphonology of Contemporary French) and provides an illustration of its methodological approach with a population of Spanish university students learning French as an L;2. For these learners the phonemic contrast between the two close rounded French vowels /y/ and /u/ is known to be difficult to acquire, but most studies in the past relied only on acoustic analyses of laboratory speech data elicited from rather few subjects. Within the IPFC framework, on the basis of a single multitask survey protocol for all populations of learners of L;2 French to ensure data comparability, data processing is carried out with an ad hoc auditory coding procedure which integrates contextual information and target-likeness assessment. In this chapter the results of three different approaches to process the /y-u/ Spanish production data are compared.

A Novel Data Processing Method for Ice Pressure Statistics

2015 ◽  
Author(s):  
Karoline M. Neumann ◽  
Sören Ehlers ◽  
Bernt J. Leira ◽  
Pentti Kujala
Keyword(s):  
Data Processing ◽  
Design Parameter ◽  
Processing Method ◽  
Full Scale ◽  
Cumulative Distribution ◽  
Discrete Events ◽  
Data Processing Method ◽  
Ice Loads ◽  
Ice Pressure ◽  
Scale Data

Maritime activities in ice bound areas increase demand for design of structures to withstand ice loads. A cumulative distribution with parameter α as a function of area is published in ISO19906 [1], based on analysis of multiple different discrete full scale rams from Jordaan [2] for application on design loads of discrete impacts. Taylor [3] performs a reanalysis including more full scale data, and taking into account the effect of exposure, presents design parameter curves α-area and x0-area. These are valuable, but are to be applied for design of discrete events, and can only be obtained from discrete event data. The objective of this paper is to describe and demonstrate a data processing method based on semi-continuous ice pressure data that can be applied not only for discrete events, but also for semi-continuous interaction. A finely meshed tactile sensor is applied. Jordaan’s [2] max event method is applied on a new definition of event, based on triggered sensels that are adjacent in time and space. The method is demonstrated on a model scale data set from Aalto University, and example design parameter curves are presented. Applying the developed method on full scale data, the results can be valuable for design of semi-continuous ice loads.

scholarly journals Dynamics and efficiency of photoswitching in biliverdin-binding phytochromes

2019 ◽  
Vol 18 (10) ◽  
pp. 2484-2496 ◽  
Author(s):  
Eleonora Consiglieri ◽  
Alexander Gutt ◽  
Wolfgang Gärtner ◽  
Luiz Schubert ◽  
Cristiano Viappiani ◽  
...  
Keyword(s):  
Time Scale ◽  
Full Scale ◽  
Scale Analysis ◽  
Millisecond Time Scale ◽  
Kinetic Processes

A full scale analysis of the kinetic processes in the μ-to-millisecond time scale for red-and far red-triggered processes in biliverdin-binding bacterial and fungal phytochromes.

Lessons from a full-scale multihop wireless ad hoc network testbed

2001 ◽  
Vol 8 (1) ◽  
pp. 8-15 ◽  
Author(s):  
D.A. Maltz ◽  
J. Broch ◽  
D.B. Johnson
Keyword(s):  
Ad Hoc Network ◽  
Ad Hoc ◽  
Full Scale ◽  
Wireless Ad Hoc Network ◽  
Multihop Wireless

Toward a turbulent constitutive relation

1970 ◽  
Vol 41 (2) ◽  
pp. 413-434 ◽  
Author(s):  
J. L. Lumley
Keyword(s):  
Reynolds Stress ◽  
Time Scale ◽  
Ad Hoc ◽  
Initial Conditions ◽  
Equilibrium Structure ◽  
Mean Velocity ◽  
Equilibrium Time ◽  
Universal Structure ◽  
High Reynolds ◽  
Stress Dependent

In an attempt to explain the failure of the various pure homogeneous strain experiments to reach equilibrium (and consequently to support the contention of Townsend of an equilibrium structure of the Reynolds stress dependent only on geometry), the nature of the general Reynolds stress-mean velocity relation is examined. It is shown that if homogeneous flows become asymptotically independent of initial conditions, and if the Reynolds stress bearing structure can be characterized by a single time scale (i.e.–at sufficiently high Reynolds number) then these flows behave like classical non-linear viscoelastic media, with the Reynolds stress structure dependent on the (strain-rate) (time scale) product. Thus, the existence of an equilibrium structure implies the existence of an equilibrium time scale and a universal value of the product. The ideas permitting Reynolds stress and mean velocity to be related are applied to the dissipative structure in homogeneous flows, and it is found that in such flow the time scale never ceases to grow, so that these flows can never reach an equilibrium structure. With the aid of an ad-hoc assumption these flows are examined in some detail, and the results of experiments are predicted with considerable accuracy. It is suggested that (inhomogeneous) flows having an equilibrium time scale may, in the homogeneous limit, be expected to display a universal structure. The small departure from universality induced by the large eddies associated with inhomogeneity may be adequately predicted by this same ad-hoc model.

Caribbean Commission

1959 ◽  
Vol 13 (2) ◽  
pp. 334-335
Keyword(s):  
West Indies ◽  
Ad Hoc ◽  
Regional Cooperation ◽  
Full Scale ◽  
Financial Assistance ◽  
The West ◽  
Rules Of Procedure ◽  
The Caribbean ◽  
Preliminary Draft

The 26th meeting of the Caribbean Commission was held in Port-of-Spain, Trinidad, May 28 to June 2, 1958. Speakers at the meeting extended congratulations and best wishes to the new Federation of The West Indies. The Commission decided to invite its member governments to establish an ad hoc committee to make preparations for a full-scale Conference to Revise the Agreement Establishing the Commission. The contemplated revision was intended to improve the Commission and to make it more efficient as an instrument of regional cooperation. The provisional agenda for this ad hoc committee, accepted by the Commission, read as follows: 1) problems relating to the functions, structure, and working methods of a successor organization for the Caribbean Commission; 2) preliminary draft of such agreement setting up such a successor organization; 3) budget estimates and apportionment of budget; 4) rules of procedure for the Revision Conference; and 5) report and findings. A suggestion was made during the meeting that financial assistance should be afforded delegates from smaller territories to permit attendance at conferences or seminars sponsored by the Commission, when necessary.

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