Results 51 to 60 of about 7,075 (168)

Metallicities of Young Open Clusters I: NGC 7160 and NGC 2232

open access: yes, 2010
We present a moderate-resolution spectroscopic analysis of the 10-25 Myr clusters NGC 7160 and NGC 2232, using observations obtained with the WIYN 3.5-m telescope. Both NGC 7160 and NGC 2232 are found to have super-solar metallicities, with a mean [Fe/H]
Andersen   +46 more
core   +1 more source

Laboratory studies of spacecraft response to transient discharge pulses [PDF]

open access: yes, 1985
The in-orbit measurement of spacecraft discharge properties was investigated. The experiments include design and fabrication of appropriate sensors and effects of spacecraft electromagnetic responses on the interpretation of the discharge data.
Adamo, R. C., Nanevicz, J. E.
core   +1 more source

Online Thevenin’s Equivalent Using Local PMU Measurements

open access: yesRE&PQJ
This paper presents a method for determining Thevenin’s Equivalent (TE) for a node in a power system using local PMU measurements at that node. Three consecutive voltage and current measurements are used to determine the TE. The proposed method recognizes and considers the phase angle drift caused by the slip frequency between the PMU sampling ...
openaire   +1 more source

The design of an electric fence monitoring system : a thesis presented in partial fulfilment of the requirements for the degree of Master of Technology in Production Technology at Massey University [PDF]

open access: yes, 1996
This thesis presents the design of an Electric Fence Monitoring System (EFMS) which detects and announciates fence malfunctions indicating operational ineffectiveness. The EFMS consists of a master unit and up to sixteen slave units.
Adamson, Paul Robert
core  

Measurement and analysis of lightning induced voltages in aircraft electrical systems [PDF]

open access: yes
Lightning induced voltages in aircraft electrical ...
Hacker, P. T., Plumer, J. A.
core   +1 more source

A STATIC AND DYNAMIC TECHNIQUE CONTINGENCY RANKING ANALYSIS IN VOLTAGE STABILITY ASSESSMENT [PDF]

open access: yes, 2013
The objective of the research is to compare between technique for determine the weak bus of the power system using static and dynamic contingency ranking analysis. Identification of the weak bus is very important for providing
Nizam , Muhammad
core  

A study of high-speed AD and DA converters using redundancy techniques Interim report, May 10, 1963 - May 9, 1964 [PDF]

open access: yes
High speed analog-to-digital converters compared using redundancy encoding ...
Carroll, C. C., Mott, H.
core   +1 more source

Simulation and optimization of rectenna systems. [PDF]

open access: yesSci Rep, 2023
Olaimat MM, Nayyeri V, Ramahi OM.
europepmc   +1 more source

Using an Evolutionary Algorithm for Harmonic Load Modeling by Norton and Thevenin Equivalents

open access: yesInternational journal of electrical and computer engineering systems, 2014
The Norton equivalent model for harmonic load modeling is used widely. The parameters of the model are usually calculated analytically. These calculations are based on measured or simulated voltage/current waveforms. In this case, harmonic analysis is needed to obtain the harmonic spectra. After this step, model parameter values are calculated for each
Bilandžija, Domagoj   +2 more
openaire   +5 more sources

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