Pole position

IEE Review ◽  
2003 ◽  
Vol 49 (5) ◽  
pp. 26-29
Author(s):  
D. Lenton
Keyword(s):  
Pole Position

Practical Realization of a Reference System for Earth Dynamics by Satellite Methods

1975 ◽  
Vol 26 ◽  
pp. 341-380 ◽  
Author(s):  
R. J. Anderle ◽  
M. C. Tanenbaum
Keyword(s):  
Reference Frame ◽  
Polar Motion ◽  
Pole Position ◽  
Control Points ◽  
Significant Information ◽  
Crustal Motion ◽  
Average Reference ◽  
Future Data ◽  
Existing Data

AbstractObservations of artificial earth satellites provide a means of establishing an.origin, orientation, scale and control points for a coordinate system. Neither existing data nor future data are likely to provide significant information on the .001 angle between the axis of angular momentum and axis of rotation. Existing data have provided data to about .01 accuracy on the pole position and to possibly a meter on the origin of the system and for control points. The longitude origin is essentially arbitrary. While these accuracies permit acquisition of useful data on tides and polar motion through dynamio analyses, they are inadequate for determination of crustal motion or significant improvement in polar motion. The limitations arise from gravity, drag and radiation forces on the satellites as well as from instrument errors. Improvements in laser equipment and the launch of the dense LAGEOS satellite in an orbit high enough to suppress significant gravity and drag errors will permit determination of crustal motion and more accurate, higher frequency, polar motion. However, the reference frame for the results is likely to be an average reference frame defined by the observing stations, resulting in significant corrections to be determined for effects of changes in station configuration and data losses.

Comets take pole position as water bearers

Nature ◽  
2011 ◽  
Author(s):  
Ron Cowen
Keyword(s):  
Pole Position

Civilization stress, cardiovascular risk, evidence based medicine, guideline

2009 ◽  
Vol 150 (19) ◽  
pp. 895-902 ◽  
Author(s):  
Kornél Simon
Keyword(s):  
Cardiovascular Risk ◽  
Cardiovascular Diseases ◽  
Chronic Stress ◽  
Randomized Clinical Trials ◽  
Decisive Role ◽  
Profit Sharing ◽  
Pole Position ◽  
Ethical Question ◽  
Drug Sale ◽  
Target Values

Cardiovascular diseases have the pole-position on the list of morbidity and mortality statistics. Despite the great advances have been made in management of cardiovascular diseases, prevalence of these disorders increases worldwide, and even younger and younger ages are threatened. This phenomenon is strongly related to obesity and type 2 diabetes pandemic, which shows an unequivocal association with expansion of modernized life-style. The pathomechanism proposed to have central role is the chronic stress induced by civilized life-conduct. The authors criticizes the everyday practice suggested for management of cardiovascular diseases, focusing on normalization of cardiovascular risk factors, instead of fighting against the primary cause ie. chronic stress. There is growing evidence, that achieving the target values defined in guide-lines will not necessarily result in improvement of patient related clinical outcomes. The statistical approach generally practiced in randomized clinical trials is primarily striving for the drug-sale, instead of discovering novel pathophysiological relations. Pharmaceutical industry having decisive role in research and patient-care is mainly interested in profit-sharing, therefore patients’ interest can not be optimally realized, and costs are unnecessarily augmented. Separation of patient-, and business-oriented medical care is an ethical question of fundamental importance.

scholarly journals Pole Position

2021 ◽  
Vol 16 (3) ◽  
pp. 3-3
Author(s):  
Robert Unseld
Keyword(s):  
Pole Position

Paleomagnetism of the Mesozoic Coast Parallel Dolerite Dikes of West Greenland

1975 ◽  
Vol 12 (7) ◽  
pp. 1244-1248 ◽  
Author(s):  
W. F. Fahrig ◽  
G. Freda
Keyword(s):  
North America ◽  
Pole Position ◽  
West Greenland ◽  
Drill Cores

Paleomagnetic measurements on 61 drill cores from eight sites of the Coast Parallel dikes of west Greenland (Fiskenaesset area) have yielded a pole position at 169°E, 54°N, α95 = 5.9°. When these data are combined with those from the Nunarsuit-Tornarssuk area (Ketelaar 1963) the pole is 168°E, 56°N, α95 = 6°. Reversely magnetized dikes are present in both areas.The Coast Parallel dike pole lies close to the Triassic pole position for North America if corrected for Bullard's fit. The dikes were therefore intruded prior to the Mesozoic separation of Greenland and North America.

Position and Speed Detection of Synchronous Motor Rotor

2012 ◽  
Vol 236-237 ◽  
pp. 61-66
Author(s):  
R.M. Tao ◽  
X. Tao ◽  
C.R. Xiong
Keyword(s):  
Machine Tools ◽  
High Performance ◽  
Synchronous Motor ◽  
Pole Position ◽  
Cnc Machine Tools ◽  
Detection Accuracy ◽  
Cnc Machine ◽  
Velocity Signal ◽  
Signal Demodulation ◽  
Server System

This article describes a method to detect the position and speed in a rotary transformer pole AC synchronous motor. This method gives the pole position and velocity signal demodulation circuit and analyses the demodulation principle. After practical testing, this approach is reliable with high detection accuracy. Therefore, it is fully able to meet the needs of CNC machine tools with high performance in AC server system.

SpaceX takes pole position in commercial space race

Physics World ◽  
2010 ◽  
Vol 23 (07) ◽  
pp. 8-8
Author(s):  
Mark Williamson
Keyword(s):  
Pole Position ◽  
Commercial Space ◽  
Space Race
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