Results 251 to 260 of about 1,403,738 (310)
Some of the next articles are maybe not open access.

Position Sensorless Permanent Magnet Synchronous Machine Drives—A Review

IEEE transactions on industrial electronics (1982. Print), 2020
Owing to the competitive advantages of cost reduction, system downsizing, and reliability enhancement, position sensorless control methods for permanent magnet synchronous machine drives have drawn increasing attention from academia to industrial ...
Gaolin Wang, M. Valla, J. Solsona
semanticscholar   +1 more source

The probability of permanence

Mathematical Biosciences, 1993
Numerical experiments suggest that cooperation is a very rare phenomenon in autocatalytic networks with more than about five interacting species. There is strong evidence that the probability for cooperative behavior in random networks decreases at least exponentially and at most as an2 with the number n of interacting species.
Peter F. Stadler, Robert Happel
openaire   +3 more sources

PERMANENCE and CHANGE

AJN, American Journal of Nursing, 1958
T SAY that we live in a world of change is to make a trite statement. Throughout recorded human history philosophers, poets, historians, and, more recently, scientists have been observing, recording, discussing, analyzing the phenomenon of change and attempting to assess its significance for human beings and their affairs. Those of us who have happened
openaire   +4 more sources

The Permanence Debate

Science, 2010
E. Kintisch (“Deforestation moves to the fore in Copenhagen,” News of the Week, 11 December 2009, p. 1465) identifies a number of issues hindering an agreement on Reducing Emissions from Deforestation and Forest Degradation (REDD). However, he does not mention permanence, which has dogged the REDD discussions for some time (1).
Ben H. J. de Jong, Margaret Skutsch
openaire   +3 more sources

The Permanent Function

Canadian Journal of Mathematics, 1962
Let X be an n-square matrix with elements in a field F. The permanent of X is defined by1.1where σ runs over the symmetric group of permutations on 1, 2, … , n. This function makes its appearance in certain combinatorial applications (13), and is involved in a conjecture of van der Waerden (6; 9). Certain formal properties of per (X) are known (1), and
Frank May, Marvin Marcus
openaire   +3 more sources

The permanent catheter

Hemodialysis International, 2013
AbstractAn elderly woman receiving hemodialysis via a right brachiocephalic arteriovenous fistula presented to the clinic for elective removal of a tunneled hemodialysis catheter inserted 5 years ago. The catheter had not been removed earlier at the patient's request. Removal was now unsuccessful in the clinic.
Ek Khoon Tan, Seck Guan Tan
openaire   +2 more sources

A Question of Permanence

Science, 2000
Scientific literature has a definite structure, a connectivity matrix consisting of citations from one article to previous articles. This structure was recognized by Science 45 years ago ([1][1]).
openaire   +3 more sources

Home - About - Disclaimer - Privacy