Results 241 to 250 of about 5,013,725 (298)

Conditional Power

JAMA, 2023
This JAMA Guide to Statistics and Methods article examines conditional power, calculated while a trial is ongoing and based on both the currently observed data and an assumed treatment effect for future patients.
Benjamin R, Saville, Michelle A, Detry, Kert, Viele   +2 more
openaire   +2 more sources

Pregroups and the big powers condition

Algebra and Logic, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kvaschuk, A. V., Myasnikov, A. G., Serbin, D. E.   +2 more
openaire   +1 more source

Optimal Conditional Error Functions for the Control of Conditional Power

Biometrics, 2004
Summary Ethical considerations and the competitive environment of clinical trials usually require that any given trial have sufficient power to detect a treatment advance. If at an interim analysis the available data are used to decide whether the trial is promising enough to be continued, investigators and sponsors often wish to have a high ...
Brannath, Werner, Bauer, Peter
openaire   +3 more sources

Condition Monitoring with National Power

1995
Condition monitoring is a developing discipline in machinery maintenance. Data such as vibration levels (both overall and in terms of frequency spectra), temperature, oil analysis, etc, are acquired from plant, and analyzed to determine the condition of that plant at the time of measurement.
John MacIntyre, Peter Smith
openaire   +1 more source

AC power conditioning

1976 IEEE Power Electronics Specialists Conference, 1976
The advent of readily available high power static switching devices has resulted in an almost infinite number of techniques for the control, inversion, and conditioning of A C power. The six papers presented in this session represent a good cross section of the power electronic technologies utilized for the A C power conditioning in a wide range of ...
openaire   +1 more source

Power Quality Conditioning

2020
This chapter presents state-of-the-art solutions to power quality problems in more-electronics power systems. It begins with passive solutions. In particular, power electronics-based power conditioning equipment, including uninterruptable power supplies (UPSs), dynamic voltage restorers (DVRs), static compensators (STATCOMs), active power filters (APFs)
openaire   +1 more source

Load and Power Conditioning

2011
Chapter 2 analyzes the power consumption of an autonomous sensor and adds some remarks on voltage regulators. In particular, a review is presented, from the point of view of power consumption, on some of the typical devices found in autonomous sensors such as sensors, microcontrollers and transceivers.
María Teresa Penella-López, Manuel Gasulla-Forner   +1 more
openaire   +1 more source

Design And Power Conditioning For The Coil-Gun

SPIE Proceedings, 1988
The author describes the power conditioning scheme for a contactless coilgun called the linear induction launcher (LIL). The barrel of the LIL consists of a linear array of coils carrying polyphase currents. These create an electromagnetic wave pocket which moves with increasing velocity from breech to muzzle, smoothly accelerating a conductive sleeve ...
Z. Zabar, Y. Naot, L. Birenbaum, E. Levi, P.N. Joshi   +4 more
openaire   +1 more source

Towards power transformer condition monitoring

Proceedings of the 7th ACM Conference on Embedded Networked Sensor Systems, 2009
We present ongoing work to develop a power transformer condition monitoring system. Energy harvesting will be used to power the sensor nodes measuring the vibration of the transformer. A subset of this work will be demonstrated.
Shaun Kaplan, Daniel de Villiers, Leon Steenkamp, Gerhard de Jager, Jevon Davies, Richardt H. Wilkinson   +5 more
openaire   +2 more sources