scholarly journals Medical Rhinoplasty – Profile Correction with Resorbable Fillers

10.5772/62066 ◽  
2016 ◽  
Author(s):  
Alessio Redaelli
Keyword(s):  
Profile Correction ◽  
Resorbable Fillers

scholarly journals Wind profile correction algorithm based on Atmospheric Boundary Layer stability profile

2021 ◽  
Author(s):  
Francisco Albuquerque Neto ◽  
Vinicius Almeida ◽  
Julia Carelli
Keyword(s):  
Boundary Layer ◽  
Atmospheric Boundary Layer ◽  
Wind Profile ◽  
Horizontal Wind ◽  
Boundary Layer Stability ◽  
Correction Algorithm ◽  
Horizontal Wind Speed ◽  
Study Region ◽  
Profile Correction ◽  
Wind Profiles

<p>In recent years, the use of radar wind profilers (RWP) at airports has grown significantly with the aim of supporting decision makers to maintain the safety of aircraft landings and takeoffs.</p><p>The RWP provide vertical profiles of averaged horizontal wind speed and direction and vertical wind velocity for the entire Atmospheric Boundary Layer (ABL) and beyond. In addition, RWP with Radio-Acoustic Sounding System (RASS) are able to retrieve virtual temperature profiles in the ABL.</p><p>RWP data evaluation is usually based on the so-called Doppler Beam Swinging method (DBS) which assumes homogeneity and stationarity of the wind field. Often, transient eddies violate this homogeneity and stationarity requirement. Hence, incorrect wind profiles can relate to transient eddies and present a problem for the forecast of high-impact weather phenomena in airports. This work intends to provide a method for removing outliers in such profiles based on historical data and other variables related to the Atmospheric Boundary Layer stability profile in the study region.</p><p>For this study, a dataset of almost one year retrieved from a RWP LAP3000 with RASS Extension is used for a wind profile correction algorithm development.</p><p>The algorithm consists of the detection of outliers in the wind profiles based on the thermodynamic structure of the ABL and the generation of the corrected profiles.</p><p>Results show that the algorithm is capable of identifying and correcting unrealistic variations in speed caused by transient eddies. The method can be applied as a complement to the RWP data processing for better data reliability.</p><p> </p><p>Keywords: atmospheric boundary layer; stability profile; wind profile</p>

Spatial patterns of high-elevation precipitation observed through spaceborne precipitation radars

2021 ◽  
Author(s):  
Masafumi Hirose ◽  
Hatsuki Fujinami
Keyword(s):  
A Priori ◽  
High Elevation ◽  
Occurrence Frequency ◽  
In Situ Observation ◽  
Dual Frequency ◽  
High Altitudes ◽  
Precipitation Radar ◽  
Glacier Terminus ◽  
Profile Correction ◽  
Trmm Pr

<p>Spaceborne-radar precipitation products at high altitudes entail close attention to geographically inherent retrieval uncertainties. The lowest levels free from surface clutter are ~1 km higher in rugged mountainous areas than those over flatlands. The clutter-removal filter masks precipitation echoes at altitudes below 3 km from the surface at the swath edge over narrow valleys in the Himalayas. In this study, precipitation profiles at levels with clutter interference were estimated using an a priori precipitation profile dataset based on near-nadir observations. The corrected precipitation dataset was generated based on the Tropical Rainfall Measuring Mission Precipitation Radar (TRMM PR) product at a spatial resolution of 0.01° around the Trambau Glacier terminus in the Nepal Himalayas, where ground observation sites were installed in 2016. The occurrence frequency of precipitation was considerably small compared with the in situ observation because of limitations in the sensor sensitivity. The occurrence frequency of light precipitation is increased by the Dual-frequency Precipitation Radar (DPR) onboard the Global Precipitation Measurement (GPM) Core Observatory, and the low-level precipitation profile correction mitigates underestimation bias by ~10%. In this presentation, the detectability of fine-scale precipitation climatology and the local characteristics of its diurnal variation at high altitudes are discussed based the combination of the TRMM PR and GPM DPR products.</p>

scholarly journals Effect of the sorting track profile change on the it’s occupancy quality at train humping

2018 ◽  
Vol 216 ◽  
pp. 02012 ◽  
Author(s):  
Konstantin Kornienko ◽  
Sergei Bessonenko
Keyword(s):  
Simulation Model ◽  
High Quality ◽  
Run Off ◽  
Profile Correction ◽  
Probability Of Collision ◽  
Profile Change

To increase the hump yard capacity, it is necessary to ensure high quality of sorting track occupancy. The purpose of this paper is to study the effect of changing the track profile on the quality of its occupancy. The simulation model developed for occupancy of sorting tracks based on the calculation of the speed of the cut and taking the following into consideration was used for the study: the possibility of starting the cut movement after a stop, errors in operation of the devices in charge of the speed of releasing the cut to the track, the possibility of displacement of the cars when the next cut collides with them. A real profile of the sorting facility track was analyzed as an example of it. It was determined that the profile caused strong effect on the track occupancy quality. The sagging of the profile causes an increase in the probability of collision of the cuts with exceeding the permissible speed. An increase in the up-gradient reduces the range of the run-off distance, which in turn causes an increase in the number of car back-ins. Profile correction will allow increasing the track occupancy quality.

scholarly journals Flip angle profile correction forT1andT2quantification with look-locker inversion recovery 2D steady-state free precession imaging

2012 ◽  
Vol 68 (5) ◽  
pp. 1579-1585 ◽  
Author(s):  
Mitchell A. Cooper ◽  
Thanh D. Nguyen ◽  
Pascal Spincemaille ◽  
Martin R. Prince ◽  
Jonathan W. Weinsaft ◽  
...  
Keyword(s):  
Steady State ◽  
Steady State Free Precession ◽  
Flip Angle ◽  
Inversion Recovery ◽  
Free Precession ◽  
Profile Correction ◽  
Free Precession Imaging

A Method of Profile Modification of the Tooth Surface of Semi-Rolled Pan Gear

2020 ◽  
pp. 32-40
Author(s):  
V.N. Syzrantsev ◽  
E.Y. Moskvina ◽  
L.A. Chernaya
Keyword(s):  
Oil And Gas ◽  
Tooth Surface ◽  
Contact Loading ◽  
Profile Modification ◽  
Profile Correction ◽  
Worm Gears ◽  
Shaft Angle ◽  
Breakaway Torque ◽  
Profile Errors ◽  
Tooth Cutting

The use of drives based on pan precession gears with a small shaft angle in which multiple-tooth meshing is implemented significantly increases the efficiency and transmitted torque in oil and gas equipment. It also and reduces the breakaway torque by almost an order in comparison with worm gears. The production of pan gears in the semi-rolled version significantly simplifies tooth cutting technology. To exclude the possibility of edge contact of the teeth coming into meshing due to their contact and bending deformations, it is necessary to carry out profile correction of the teeth. To address this issue, a method utilizing a tool with a straight cutting edge displaced from the axial plane of the tool is proposed. Using cutting of the wheel teeth of a semi-rolled pan gear with the proposed tool as an example, calculations of the total profile errors and the tooth surface curvatures are performed to further determine the contact loading of the gear.

Surface coil MR imaging of the human brain with an analytic reception profile correction

1995 ◽  
Vol 5 (2) ◽  
pp. 139-144 ◽  
Author(s):  
Susan E. Moyher ◽  
Daniel B. Vigneron ◽  
Sarah J. Nelson
Keyword(s):  
Mr Imaging ◽  
Human Brain ◽  
Surface Coil ◽  
Profile Correction
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