Long-term seismic noise investigations on Shikotan Island: First results

2008 ◽  
Vol 2 (3) ◽  
pp. 218-227 ◽  
Author(s):  
Yu. A. Kugaenko ◽  
V. A. Saltykov ◽  
V. I. Sinitsyn ◽  
A. A. Shishkin
Keyword(s):  
Seismic Noise ◽  
Shikotan Island ◽  
First Results

Stents for the Treatment of Aortic Aneurysms

1999 ◽  
Vol 82 (S 01) ◽  
pp. 171-175 ◽  
Author(s):  
D. Ebert ◽  
M. Langer ◽  
P. Uhrmeister
Keyword(s):  
Endovascular Treatment ◽  
Endovascular Repair ◽  
Abdominal Aortic Aneurysms ◽  
Aortic Aneurysms ◽  
Imaging Modalities ◽  
Exclusion Criteria ◽  
Multicenter Studies ◽  
Abdominal Aortic ◽  
First Results

SummaryThe endovascular treatment of abdominal aortic aneurysms has generated a great deal of interest since the early 1990s, and many different devices are currently available. The procedure of endovascular repair has been evaluated in many institutions and the different devices are compared. The first results were encouraging, but complications like endoleak, dislocation or thrombosis of the graft occurred. By the available devices the stent application is only promising, if the known exclusion criteria are strictly respected. Therefore a careful preinterventional assessment of the patient by different imaging modalities is necessary. As the available results up to now are preliminary and the durability of the devices has to be controlled, multicenter studies are required to improve the devices and observe their long- term success in the exclusion of abdominal aortic aneurysms.

scholarly journals First point measurements of ice-sheet thickness change in Antarctica

1998 ◽  
Vol 27 ◽  
pp. 125-129 ◽  
Author(s):  
Gordon S. Hamilton ◽  
Ian M. Whillans ◽  
Peter J. Morgan
Keyword(s):  
Ice Sheet ◽  
Sheet Thickness ◽  
Snow Accumulation ◽  
Repeated Measurements ◽  
Occupation Times ◽  
Thickness Change ◽  
Global Positioning ◽  
First Results ◽  
Ice Stream B

Ice-sheet thickening or thinning rates in Antarctica are measured using the “coffee-can” or “submergence velocity” method. in this, repeated measurements of the positions of firn anchors are obtained using the global positioning system (GPS). The thickness change is (lie difference between vertical velocity so obtained and long-term rate of snow accumulation. Minor corrections for firn settling and downslopc motion are made. The technique avoids difficulties of short-term fluctuations in snowfall or snow den-sification. The result for Byrd Station is near balance, -0.004 (0.022) ma−1, and for the Dragon, just outboard of Ice Stream B, thinning at -0.096 (0.044) ma−1. Uncertainties with these first results are mainly due to the short occupation times during the first GPS surveys.

scholarly journals Development and Usability Validation of a Social Robot Platform for Physical and Cognitive Stimulation in Elder Care Facilities

Healthcare ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1067
Author(s):  
Luis Cobo Hurtado ◽  
Pablo Francisco Viñas ◽  
Eduardo Zalama ◽  
Jaime Gómez-García-Bermejo ◽  
José María Delgado ◽  
...  
Keyword(s):  
Elder Care ◽  
Care Facility ◽  
Cognitive Stimulation ◽  
Research Experience ◽  
Web Interface ◽  
Android Os ◽  
First Results ◽  
State Examination ◽  
Robot Platform

This article shows our work for developing an elder care platform for social interaction and physical and cognitive stimulation using the Pepper robot and Android OS as clients, based on the knowledge acquired on our long-term social robotics research experience. The first results of the user’s acceptance of the solution are presented in this article. The platform is able to provide different services to the user, such as information, news, games, exercises or music. The games, which have a bi-modal way of interacting (speech and a touch screen interface), have been designed for cognitive stimulation based on the items of the mini-mental state examination. The results of the user’s performance are stored in a cloud database and can be reviewed by therapists through a web interface that also allows them to establish customized therapy plans for each user. The platform has been tested and validated, first using adult people and then deployed to an elder care facility where the robot has been interacting with users for a long period of time. The results and feedback received have shown that the robot can help to keep the users physically and mentally active as well as establish an emotional link between the user and the robot.

scholarly journals Observation of the rock slope thermal regime, coupled with crack meter stability monitoring

2021 ◽  
Author(s):  
Ondřej Racek ◽  
Jan Blahůt ◽  
Filip Hartvich
Keyword(s):  
Rock Mass ◽  
Monitoring System ◽  
Rock Slope ◽  
Global Radiation ◽  
Environmental Parameters ◽  
Radiation Balance ◽  
Rock Types ◽  
Novel Approach ◽  
First Results

Abstract. This article describes an innovative, complex and affordable monitoring system designed for joint observation of environmental parameters, rock block dilatations and temperature distribution inside the rock mass with a newly designed 3-meter borehole temperature sensor. Global radiation balance data are provided by pyranometers. The system introduces a novel approach for internal rock mass temperature measurement, which is crucial for the assessment of the changes in the stress field inside the rock slope influencing its stability. The innovative approach uses an almost identical monitoring system at different sites allowing easy setup, modularity and comparison of results. The components of the monitoring system are cheap, off-the-shelf and easy to replace. Using this newly designed system, we are currently monitoring three different sites, where the potential rock fall may endanger society assets below. The first results show differences between instrumented sites, although data time-series are relatively short. Temperature run inside the rock mass differs for each site significantly. This is very likely caused by different aspects of the rock slopes and different rock types. By further monitoring and data processing, using advanced modelling approaches, we expect to explain the differences among the sites, the influence of rock type, aspect and environmental variables on the long-term slope stability.

scholarly journals Low-Cost GNSS Solution for Continuous Monitoring of Slope Instabilities Applied to Madonna Del Sasso Sanctuary (NW Italy)

Sensors ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 289 ◽  
Author(s):  
Davide Notti ◽  
Alberto Cina ◽  
Ambrogio Manzino ◽  
Alessio Colombo ◽  
Iosif Horea Bendea ◽  
...  
Keyword(s):  
Continuous Monitoring ◽  
Low Cost ◽  
Methodological Approach ◽  
Communication Strategy ◽  
Term Trend ◽  
First Results ◽  
Unstable Slope ◽  
Nw Italy ◽  
Long Term Trend

In recent years, the development of low-cost GNSS sensors allowed monitoring in a continuous way movement related to natural processes like landslides with increasing accuracy and limited efforts. In this work, we present the first results of an experimental low-cost GNSS continuous monitoring applied to an unstable slope affecting the Madonna del Sasso Sanctuary (NW Italy). The courtyard of Sanctuary is built on two unstable blocks delimited by a high cliff. Previous studies and non-continuous monitoring showed that blocks suffer a seasonal cycle of thermal expansion and a long-term trend to downslope a few millimeters (2/3) per year. The presence of a continuous monitoring solution could be an essential help to better understand the kinematics of unstable slope. Continuous monitoring could help to forecast a possible paroxysm phase that could end with a failure of the unstable area. The first year of experimental measurements shows a millimetric accuracy of low-cost GNSS, and the long-term trend is in agreement with other monitoring data. We also propose a methodological approach that considers the use of semi-automatized procedures for the identification of anomalous trends and a risk communication strategy. Pro and cons of the proposed methodology are also discussed.

scholarly journals Proper Motions and Distances of Water Maser Complexes

1984 ◽  
Vol 110 ◽  
pp. 335-338
Author(s):  
M. H. Schneps ◽  
M. J. Reid ◽  
J. M. Moran ◽  
R. Genzel ◽  
D. Downes ◽  
...  
Keyword(s):  
Spectral Line ◽  
Galactic Center ◽  
Three Dimensional ◽  
Proper Motions ◽  
Preliminary Results ◽  
First Results ◽  
Maser Sources ◽  
Water Maser

We report preliminary results of a long term spectral line VLBI experiment to observe internal proper motions of water maser sources in the vicinity of newly formed stars. This technique yields a picture of the three-dimensional kinematics of the region and a measure of the distance to the source. First results from the galactic center source SGR B2 are presented.

Long-term measurements of cosmic ray neutrons by means of a Bonner spectrometer at mountain altitudes - first results

2007 ◽  
Vol 126 (1-4) ◽  
pp. 506-511 ◽  
Author(s):  
G. Leuthold ◽  
V. Mares ◽  
W. Ruhm ◽  
E. Weitzenegger ◽  
H. G. Paretzke
Keyword(s):  
Cosmic Ray ◽  
First Results

First results from the pisa seismic noise super-attenuator for low frequency gravitational wave detection

1988 ◽  
Vol 132 (5) ◽  
pp. 237-240 ◽  
Author(s):  
R. Del Fabbro ◽  
A. Di Virgilio ◽  
A. Giazotto ◽  
H. Kautzky ◽  
V. Montelatici ◽  
...  
Keyword(s):  
Gravitational Wave ◽  
Seismic Noise ◽  
Low Frequency ◽  
Gravitational Wave Detection ◽  
Wave Detection ◽  
First Results
Sign in / Sign up

Export Citation Format

Share Document