Analyse des performances do profigomètre

1995 ◽  
Vol 32 (5) ◽  
pp. 917-921
Author(s):  
Christian Garneau ◽  
Marc G. Tanguay
Keyword(s):  
Hydrostatic Pressure ◽  
Key Words ◽  
High Accuracy ◽  
Flexible Pipe ◽  
Pressure Transducers ◽  
Full Profile ◽  
Vertical Tubes

Amongst the equipment included in instrumentation programs for the construction of embankments on compressible soils, the full profile gage makes it possible to determine the profile of the vertical settlement by measuring the hydrostatic pressure in a flexible pipe filled with liquid and placed horizontally under a structure. Four full profile gages were installed under OLGA-C, which is a test fill built by Hydro-Québec near Matagami. On the site of OLGA-C, settlement tubes, located near the full profiles gages, have provided data that could be closely compared with those given by the full profile gages. Equipped with high accuracy pressure transducers (±0.1%), the full profile gages have shown settlement values within 1 cm, on the average, of the values obtained with vertical tubes. Key words : full profile gage, instrumentation, geotechnic, settlement data, fill construction, test fill. [Journal translation]

Analysis of tensile response of flexible pipe with ovalization under hydrostatic pressure

2021 ◽  
Vol 108 ◽  
pp. 102451
Author(s):  
Xiaohua Zhu ◽  
Qinglong Lei ◽  
Yu Meng ◽  
Xiaoxuan Cui
Keyword(s):  
Hydrostatic Pressure ◽  
Flexible Pipe ◽  
Tensile Response

Technics for experimental determination of CubeSat mass-centering and inertial characteristics

2021 ◽  
pp. 83-95
Author(s):  
Igor V. BELOKONOV ◽  
Elena V. BARINOVA ◽  
Vitaly N. KLYUCHNIK ◽  
Alexander V. IVLIEV ◽  
Elisey A. BOLTOV
Keyword(s):  
Initial Data ◽  
Experimental Determination ◽  
Key Words ◽  
Theoretical Calculations ◽  
Center Of Mass ◽  
High Accuracy ◽  
Design Parameters ◽  
Moments Of Inertia ◽  
Series Of Experiments

Due to inability to set a high accuracy of initial data in theoretical calculations of mass-centering and inertial characteristics of nanosatellites, a problem arises concerning the experimental determination of their actual values. For a number of reasons, the devices designed for large spacecraft are not appropriate for small ones. This paper describes a device for measuring the center of mass coordinates and moments of inertia developed at Samara University specifically for CubeSat nanosatellites, as well as a technology for experimental determination of the design parameters of nanoclass spacecraft. The accuracy of determining the design parameters using the proposed device is confirmed by a series of experiments with standards. Key words: nanosatellite, center of mass coordinates, moment of inertia, inertia tensor, measuring platform.

scholarly journals Automatic glacier ablation measurements using pressure transducers

2004 ◽  
Vol 50 (169) ◽  
pp. 303-304 ◽  
Author(s):  
Carl Egede Bøggild ◽  
Ole B. Olesen ◽  
P.Ahlstrøm Andreas ◽  
Peer Jørgensen
Keyword(s):  
Hydrostatic Pressure ◽  
Pressure Transducer ◽  
Pressure Transducers ◽  
Surface Ice ◽  
Glacier Ablation

AbstractAn instrument is described that automatically records ice ablation while eliminating the need for ablation stakes. A pressure transducer placed at the bottom of a hole drilled into the ice is connected by a hose to a bladder lying on the surface. Ice ablation is detected as a reduction in the hydrostatic pressure measured by the transducer.

scholarly journals Technology of Geodetic Control at Railway Construction Stages

2018 ◽  
Vol 8 ◽  
pp. 52-60
Author(s):  
Vilma Kriauciunaite-Neklejonoviene ◽  
Donatas Rekus ◽  
Giedrius Balevicius ◽  
Oleg Kolbovskij
Keyword(s):  
Key Words ◽  
Data Storage ◽  
High Accuracy ◽  
Process Data ◽  
Special Equipment ◽  
Railway Construction ◽  
Equipment Construction ◽  
Optimal Accuracy ◽  
Railway Maintenance ◽  
Geodetic Surveying

Railway tracks require more thorough maintenance and analysis than regular roads for cars. Defects are here noticed and recorded by using special equipment. Construction of railway roads and their exploitation requires optimal accuracy and monitoring of surveying. It is related to maximum allowed speed of trains, the environment, transport and human safety. In order to highlight complex problems of railway road exploitation, the evaluation of railway roads was conducted. Problem areas of railway maintenance were identified. Their monitoring needs to be improved by applying geodetic devices for surveying. Comparing analogous surveying conducted using EM140 machine with that of geodetic equipment, one can see the advantage of geodetic surveying. Technical gaps in the surveying process, data storage and procession were evaluated as well. It was discovered that maintenance and monitoring works should be pursued more frequently using high accuracy geodetic equipment. Key words: railway, geodetic surveying, accuracy of surveying, EM140.

scholarly journals Inferring Student's Chat Topic in Colloquial Arabic Text using Semantic Representation

2016 ◽  
Vol 6 (4) ◽  
pp. 1897
Author(s):  
Faisal T. Khamayseh
Keyword(s):  
Key Words ◽  
Semantic Representation ◽  
High Accuracy ◽  
Arabic Text ◽  
Chat Room ◽  
Main Subject ◽  
The Core ◽  
Colloquial Arabic ◽  
Palestinian Arabic

Since the colloquial Arabic is now widespread it is required to describe the collection and classification of a multi-dialectal corpus of Arabic. Nowadays, colloquial multi-dialectal comes in almost country based forms such as Egyptian, Iraqi, Levantine, Tunisian, etc. This paper discusses a new method for analyzing the conversation of the educational chat room using Corpus for Palestinian Arabic and Stanford Tagger. This method represents the key words using semantic net-like representation to obtain the main subjects of the conversation. The main subject of the chat is obtained using the proposed method which shows a high accuracy. Using Arabic Corpus, Stanford Tagger and percentage of words will add more accuracy. The study also examines the effect of pivot distribution based on occurrences and <em>betweeness</em> values of the pivots over the text. This study examines some of the characteristics of the texts written in colloquial Arabic dialect and analyzes the free expressive Arabic statements. The results of the paper show that the core can be determined by combining both the occurrences and the distribution of the word over the conversation.

Inferring Student's Chat Topic in Colloquial Arabic Text using Semantic Representation

2016 ◽  
Vol 6 (4) ◽  
pp. 1897
Author(s):  
Faisal T. Khamayseh
Keyword(s):  
Key Words ◽  
Semantic Representation ◽  
High Accuracy ◽  
Arabic Text ◽  
Chat Room ◽  
Main Subject ◽  
The Core ◽  
Colloquial Arabic ◽  
Palestinian Arabic

Since the colloquial Arabic is now widespread it is required to describe the collection and classification of a multi-dialectal corpus of Arabic. Nowadays, colloquial multi-dialectal comes in almost country based forms such as Egyptian, Iraqi, Levantine, Tunisian, etc. This paper discusses a new method for analyzing the conversation of the educational chat room using Corpus for Palestinian Arabic and Stanford Tagger. This method represents the key words using semantic net-like representation to obtain the main subjects of the conversation. The main subject of the chat is obtained using the proposed method which shows a high accuracy. Using Arabic Corpus, Stanford Tagger and percentage of words will add more accuracy. The study also examines the effect of pivot distribution based on occurrences and <em>betweeness</em> values of the pivots over the text. This study examines some of the characteristics of the texts written in colloquial Arabic dialect and analyzes the free expressive Arabic statements. The results of the paper show that the core can be determined by combining both the occurrences and the distribution of the word over the conversation.

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