Disentangling effects of noise from presence of anthropogenic infrastructure: Design and testing of system for large-scale playback experiments

2015 ◽  
Vol 39 (2) ◽  
pp. 364-372 ◽  
Author(s):  
Patricia Rosa ◽  
Colin R. Swider ◽  
Lionel Leston ◽  
Nicola Koper
Keyword(s):  
Large Scale ◽  
Playback Experiments ◽  
Infrastructure Design ◽  
Design And Testing

Design and Testing of ITER TF Coil Insulations

2011 ◽  
Vol 21 (3) ◽  
pp. 3127-3131 ◽  
Author(s):  
Matthew W. Hooker ◽  
Jennifer K. Walsh ◽  
Mark W. Haynes ◽  
Naseem A. Munshi
Keyword(s):  
Radiation Exposure ◽  
Large Scale ◽  
Mechanical Performance ◽  
International Organization ◽  
Vacuum Impregnation ◽  
Test Results ◽  
Qualification Test ◽  
Insulation System ◽  
Cyanate Ester Resin ◽  
Design And Testing

The design of the ITER Toroidal Field (TF) coils requires an insulation system that is amenable to the very large scale vacuum impregnation processes planned for the construction of these devices, and that will provide reliable electro-mechanical performance after radiation exposure. To address this need, CTD has developed an epoxy/cyanate ester resin system designated CTD-425. This material meets the processing requirements for use in the TF coils, and cyclic mechanical testing of conductor assemblies has demonstrated its electro-mechanical strength after 60,000 mechanical cycles. In addition, this product recently passed radiation exposure tests coordinated by the ITER International Organization and is now qualified for use in constructing the TF coils. This paper summarizes the performance characterization and qualification test results for this insulation.

Pengembangan Infrastruktur Pembelajaran Daring Menggunakan Antena Unidirectional

2021 ◽  
Vol 5 (4) ◽  
pp. 760-767
Author(s):  
Rufman Akbar ◽  
Chaerul Anwar ◽  
Johannes Hamonangan Siregar
Keyword(s):  
Internet Connection ◽  
Network Connection ◽  
Marginal Areas ◽  
Infrastructure Design ◽  
Signal Amplifier ◽  
Network Quality ◽  
Client Side ◽  
To Receive ◽  
Design And Testing ◽  
Network Device

Situation during COVID19 pandemic, requires all schools to conduct online learning. This condition is done to prevent the spread of pandemic. The problem is that the infrastructure is not fully supported. Learning in marginal areas is still constrained by the difficulty of the signal or internet connection. This research was conducted to obtain an infrastructure design that can be used in areas with minimal internet connection, or even no internet network connection. Using R&D, the research begins by designing a network device on the school side – Acces Point, also a tool to expand coverage -  repeater. Furthermore, design and testing of signal amplifier antennas that can be used on the client side is carried out. For the client side, several types of amplifier antennas are made that can be used to receive Wifi frequencies. There are three types of antennas that are made and tested, namely Yagi, Yagi Cross, and cantennas. Both are Unidirectional antenna. Connection quality is measured with a Wifi analyzer device to determine network quality. As for mobile phones, it is measured using the Wifi Master Key. The result obtained is a WELAN infrastructure design which is equipped with unidirectional antenna design with a total range of 8 Km.  

Integrated Design and Testing of an Anemometer for Autonomous Sail Drones

2017 ◽  
Vol 140 (5) ◽  
Author(s):  
Pugi Luca ◽  
Allotta Benedetto ◽  
Boni Enrico ◽  
Guidi Francesco ◽  
Montagni Marco ◽  
...  
Keyword(s):  
Large Scale ◽  
Fluid Dynamic ◽  
Low Cost ◽  
Integrated Design ◽  
Weather Conditions ◽  
Performance Ratio ◽  
Correct Estimation ◽  
University Of Florence ◽  
Variable Weather ◽  
Design And Testing

A correct estimation of both direction and intensity of wind velocity is fundamental for controlling an autonomous sail-boat. This kind of estimation has to be performed in a harsh environment considering the direct exposition of the sensor to salt, fog, and to any variable weather conditions. An important feature is represented by the sensor size, which has to be small compared to the drone size. Costs have to be optimized with respect to the overall small budget involved in the construction of the drone. Finally, extensive use on drones or in large sensor networks should be greatly advantaged by an easy substitutability in the case of accidental damage or system loss, an eventuality which is difficult to be completely avoided for large scale, prolonged monitoring activities. In this work authors propose a low cost ultrasonic planar anemometer with a very interesting price to performance ratio which is obtained by introducing a simple, original and innovative Arduino based architecture. Preliminary design and the results of calibration will be described, followed by testing activities performed on a low-speed large section wind tunnel, available at University of Florence supported by simple but effective computational fluid dynamic (CFD) simulations.

Recent Concepts for the Welding of High Strain Pipelines

2009 ◽  
Author(s):  
Brian D. Newbury ◽  
Martin W. Hukle ◽  
Mark D. Crawford ◽  
Joshua Sleigh ◽  
Steven A. Altstadt ◽  
...  
Keyword(s):  
Large Scale ◽  
High Strain ◽  
Soil Liquefaction ◽  
Operating Pressure ◽  
Line Pipe ◽  
Strain Capacity ◽  
Soil Movement ◽  
Specific Material ◽  
Pipeline Design ◽  
Design And Testing

Standard allowable stress-based pipeline designs (strain demand ≤ 0.5%) are now giving way to more complex strain-based designs (strain demand higher than 0.5%) as the locations of future pipelines move into regions of increased strain demand. The increase in required levels of strain demand are attributed to seismic activity, soil movement, soil liquefaction, frost heave, thaw settlement, ice scour or a combination thereof. Pipelines in high strain demand regions are typically limited by the strain capacity of the girth weld. As strain-based pipeline design has matured, it has become evident that specific material properties (both weld metal and line pipe), defect size, defect location, misalignment, and operating pressure each affect the strain capacity of the pipeline. This paper reviews proposed design and testing methodologies for the qualification of strain-based design welding procedures. These methods have been applied in the development and qualification of welding procedures for the construction of pipelines subject to longitudinal tensile strains in excess of 2%. Strain-based design requires considerably more effort than traditional design in terms of girth weld qualification and testing. To ensure adequate girth weld strain capacity for strain-based design the testing includes large scale and full-scale pressurized testing for design validation.

scholarly journals The Design and Testing of a Radial Flow Turbine for Aerodynamic Research

1991 ◽  
Author(s):  
I. Huntsman ◽  
H. P. Hodson ◽  
S. H. Hill
Keyword(s):  
High Speed ◽  
Large Scale ◽  
Three Dimensional ◽  
Surface Flow ◽  
Stream Line ◽  
Flow Visualisation ◽  
Gas Generator ◽  
Low Speed ◽  
Scaling Parameters ◽  
Design And Testing

This paper describes the design of a high-speed radial inflow turbine for use as part of a gas-generator, and the design of a large-scale (1.2 m tip dia.) low-speed model of the high-speed turbine. Stream-line curvature throughflow, two-dimensional blade-to-blade and fully three-dimensional inviscid and viscous calculation methods have been used extensively in the analysis of the designs. The use of appropriate scaling parameters and their impact on turbine performance is discussed. A simple model shows, for example, how to model the blade lean in the inducer which serves to balance the effect of meridional curvature at inlet to the rotor and can be used to unload the rotor tip. A brief description of the low speed experimental facility is followed by a presentation and discussion of experimental results. These include surface flow visualisation patterns on both the rotor and stator blades and blade row exit traverses.

scholarly journals Design and Testing of Automatic Machine Translation System Based on Chinese-English Phrase Translation

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Jing Ning ◽  
Haidong Ban
Keyword(s):  
Machine Translation ◽  
Language Processing ◽  
Evaluation System ◽  
Large Scale ◽  
Automatic Machine ◽  
Translation System ◽  
Automatic Translation ◽  
Translation Methods ◽  
Translation Systems ◽  
Design And Testing

With the development of linguistics and the improvement of computer performance, the effect of machine translation is getting better and better, and it is widely used. The automatic expression translation method based on the Chinese-English machine takes short sentences as the basic translation unit and makes full use of the order of short sentences. Compared with word-based statistical machine translation methods, the effect is greatly improved. The performance of machine translation is constantly improving. This article aims to study the design of phrase-based automatic machine translation systems by introducing machine translation methods and Chinese-English phrase translation, explore the design and testing of machine automatic translation systems based on the combination of Chinese-English phrase translation, and explain the role of machine automatic translation in promoting the development of translation. In this article, through the combination of machine translation experiments and machine automatic translation system design methods, the design and testing of machine automatic translation systems based on Chinese-English phrase translation combinations are studied to cultivate people's understanding of language, knowledge, and intelligence and then help solve other problems. Language processing issues promote the development of corpus linguistics. The experimental results in this article show that when the Chinese-English phrase translation probability table is changed from 82% to 51%, the BLEU translation evaluation system for the combination of Chinese-English phrases is improved. Automatic machine translation saves time and energy of translation work, which shows that machine translation shows its advantages due to its short development cycle and easy processing of large-scale corpora.

Magat Dams: Design of internal filters and drains

1983 ◽  
Vol 20 (3) ◽  
pp. 491-501 ◽  
Author(s):  
Sydney F. Hillis ◽  
E. Glen Truscott
Keyword(s):  
Cross Section ◽  
Large Scale ◽  
Filter Design ◽  
The Philippines ◽  
Core Material ◽  
Project Area ◽  
Intact Core ◽  
Dam Core ◽  
Large Scale Tests ◽  
Design And Testing

This paper describes the design and testing for the filter and drain zones for the Magat Dams. These four rockfill structures are located in the Philippines and range in height from 25 to 115 m. Construction was completed in late 1982. The project area is in a seismically active region and, as a result, the dam design had to be inherently conservative. This resulted in a highly zoned cross section and the provision of several wide filter and drain zones. The design of the filters and drains were checked by a series of large scale tests involving a 580 mm diam. permeameter and a large flume. Owing to the risk, however slight, of the dam cores being cracked during a major earthquake, the tests were carried out using both intact core material and core material into which a crack had been introduced. The results of the testing indicate that: (a) the filter gradations chosen are satisfactory, (b) it was prudent at Magat to introduce two filter zones between the dam core and the chimney drain, (c) conventional filter criteria are overly conservative when applied to the Magat core material, and (d) conventional criteria do not apply to the case of a cracked core. In this case the protective filter should contain a small amount of noncohesive fines. This is in accordance with developing practice. Keywords: filter design, testing, dam design, seismic effects, cracking.

scholarly journals Design and evaluation of a new intersection model to minimize congestions using VISSIM software

2020 ◽  
Vol 10 (1) ◽  
pp. 48-56 ◽  
Author(s):  
Jana Fabianova ◽  
Peter Michalik ◽  
Jaroslava Janekova ◽  
Michal Fabian
Keyword(s):  
Optimal Solution ◽  
Line Length ◽  
Traffic Light ◽  
Traffic Modelling ◽  
Current State ◽  
Intersection Model ◽  
Infrastructure Design ◽  
Design Software ◽  
Design And Testing ◽  
Traffic Simulations

AbstractTraffic modelling and simulation is one of the frequent tools used in road infrastructure design. Software tools designed for traffic simulations are an important supportive tool in decision-making and in choosing the optimal solution. The aim of this paper is to introduce the application of the VISSIM program, in the design and testing a model of the traffic-light-controlled intersection. The traffic on the selected congested intersection is modelled and simulated first for the current state, then for two models with modifications that are to increase the throughput of the intersection. The monitored criterion of the intersection throughput is the length of queues. Both adjustments have led to a significant reduction of the number of vehicles waiting in direction of the greatest congestions. In the first model, the average line length was reduced by 75%, and in the second model, the modifications lead to a fluent passage of right-turn vehicles and a significant reduction in vehicle lines for other directions.

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