Search Results - "Frequency"

Frequency discriminator detection in frequency-selective fading environments. by Rohani-Mehdiabadi, Bijan

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The Impact of Frequency Standards on Coherence in VLBI at the Highest Frequencies by Rioja, Maria, Dodson, Richard, Asaki, Y, Hartnett, J, Tingay, Steven

“…We have carried out full imaging simulation studies to explore the impact of frequency standards in millimeter and submillimeter very long baseline interferometry (VLBI), focusing on the coherence time and sensitivity. …”
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Frequency Domain by Chan, Felix, Reale, M.

“…Time series analysis in frequency domain has always been an active area of research. …”
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Frequency Response Analysis Using High Frequency Transformer Model by Abu-Siada, Ahmed

“…The main problem about FRA techniques is to interpret the observed evolution of the frequency response in order to identify failures. Transformer high frequency computer modeling is proposed in this work to be used with the practical FRA measurements. …”
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Frequency Response Analysis Using High Frequency Transformer Model by Abu-Siada, Ahmed, Douglas, Simiyu, Islam, Syed

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High frequency power transformer modelling for frequency response analysis studies by Aljohani, O., Abu-Siada, Ahmed, Li, S.

“…Frequency response analysis (FRA) has been widely utilized to detect winding and core deformations within power transformers. …”
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Estimating natural frequency of pipe with various geometries: improvement of frequency factors by Saari, Noor Fariza, Putra, Azma, Irianto, Dan, Reduan Mat, Zeli, Muhammad Agus, Ramlan, Roszaidi, Abdul Jalil, Nawal Aswan, Herawan, Safarudin

“…In this paper, the vibration mode shapes of various possible geometries of pipes in practice were simulated in ANSYS and the simulated natural frequency is related to a natural frequency of an Euler-Bernoulli beam using a correction factor for each corresponding piping geometry. …”
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New techniques for measurement and tracking of phase and frequency. by Hill, Martin T.

Subjects: “…frequency measurement…”
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Modeling Of EEG Signal Sound Frequency Characteristic Using Time Frequency Analysis by Sudirman, Rubita, A. K. Chee, Wan Daud, Wan Mohd Bukhari

“…The study includes feature extraction of the EEG signals with respect to different sound frequencies, covering low frequency (40 Hz), mid-range frequency (5000 Hz), and high frequency (15000 Hz). …”
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Rain attenuation prediction for higher frequencies in microwave communication using frequency scaling technique by Kesavan, Ulaganathen, Islam, Md. Rafiqul, Abdullah, Khaizuran, Tharek, A.R.

“…At a frequency range above 5 GHz, rainfall becomes a serious and major source of attenuation for microwave communication. …”
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The Low-Frequency Environment of the Murchison Widefield Array: Radio-Frequency Interference Analysis and Mitigation by Offringa, A., Wayth, Randall, Hurley-Walker, N., Kaplan, D., Barry, N., Beardsley, A., Bell, M., Bernardi, G., Bowman, J., Briggs, F., Callingham, J., Cappallo, R., Carroll, P., Deshpande, A., Dillon, J., Dwarakanath, K., Ewall-Wice, A., Feng, L., For, B., Gaensler, B., Greenhill, L., Hancock, P., Hazelton, B., Hewitt, J., Hindson, L., Jacobs, D., Johnston-Hollitt, M., Kapinska, A., Kim, H., Kittiwisit, P., Lenc, E., Line, J., Loeb, A., Lonsdale, C., McKinley, B., McWhirter, S., Mitchell, D., Morales, M., Morgan, E., Morgan, J., Neben, A., Oberoi, D., Ord, Stephen, Paul, S., Pindor, B., Pober, J., Prabu, T., Procopio, P., Riding, J., Shankar, N., Sethi, S., Srivani, K., Staveley-Smith, L., Subrahmanyan, R., Sullivan, I., Tegmark, M., Thyagarajan, N., Tingay, Steven, Trott, C., Webster, R., Williams, A., Williams, C., Wu, C., Wyithe, J., Zheng, Q.

“…The results are compared to a previously published Low-Frequency Array radio-frequency interference survey. …”
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Determination of Gyro Frequency from Critical Frequency Measurements Over Parit Raja, Malaysia by Ahmad Faizal, Mohd Zain, Sabirin, Abdullah, Zeti Akma, Rhazali

“…The critical frequencies of the ionosphere are observed from ionograms to determine the gyro frequencies. …”
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Quantitative frequency security assessment for multi-machine power system based on COI frequency by Iessa, Athraa, Abdul Wahab, Noor Izzri, Mariun, Norman, Hizam, Hashim

“…In this paper, a method is proposed to evaluate frequency security of multi-machine power system using transient frequency deviation index (TFDI) which is based on Center of Inertia (COI) referred frequency. …”
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Frequency dependent permittivity of soil and bentonite: for lightning protection and high frequency earthing systems by Sabry, Riyadh Z., Gomes, Ashen, Gomes, Chandima, Ab Kadir, Mohd Zainal Abidin, Misron, Norhisam

“…This paper presents the frequency dependent permittivity of a selected type of soil, bentonite and four of their mixes by weight. …”
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CMOS Variable Gain Low Noise Amplifier for Radio Frequency Applications by Lee, Lini

Subjects: “…Radio frequency…”
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Graph Colouring and Frequency Assignment by Waters, Robert James

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Frequency modulation in EEG signals by Vijayakumar, V., Yusoff, Rahimi, Eswaranr, C.

“…When the Lommel functions are allowed to time-evolve and analysed using the method of instantaneous frequency, we obtain a frequency modulated harmonic spectrum. …”
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Frequency Selection and Ambiguity Resolution. by Teunissen, Peter., Joosten, P., de Jong, C.D.

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Increasing the frequency of breakfast consumption by Kothe, E., Mullan, Barbara

“…Design/methodology/approach – A systematic review of interventions aimed at increasing breakfast-eating frequency in a non-clinical sample was conducted. Findings – A total of 11 interventions were identified and reviewed; of these, only three resulted in an increase in breakfast consumption at follow-up. …”
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LOFAR: The LOw-Frequency ARray by van Haarlem, M., Wise, M., Gunst, A., Miller-Jones, James

“…LOFAR, the LOw-Frequency ARray, is a new-generation radio interferometer constructed in the north of the Netherlands and across Europe. …”
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