Search Results - "Oladipo, O. A."

Equatorial ionospheric irregularities using GPS TEC derived index by Oladipo, O.A., Schüler, Torben

“…We have used the rate of change of TEC (ROT) derived fluctuation index to study irregularities in the ionosphere at Franceville in Gabon (Lat.= −1.63°,…”
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Integrated reporting and corporate performance in Nigeria: Evidence from the banking industry by Adegboyegun, A. E, Alade, M. E, Ademola, A. O, Eluyela, D. F, Oladipo, O. A

“…The study examined the impact of integrated reporting on the performance of corporate organizations in Nigeria between 2009 and 2018. The major motivation for…”
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Variation of Digisonde‐Derived Scale Height During Quiet and Disturbed Geomagnetic Conditions Over an African Equatorial Station by Adebiyi, S. J., Adeniyi, J. O., Reinisch, B. W., Adebesin, B. O., Ikubanni, S. O., Adimula, I. A., Oladipo, O. A., Olawepo, A. O., Joshua, B. W., Adekoya, B. J.

“…One inherent parameter in the extrapolation of ionospheric topside profile is the scale height, which can be derived from an ionogram. For the first time in…”
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Signature of the 29 March 2006 eclipse on the ionosphere over an equatorial station by Adeniyi, J. O., Radicella, S. M., Adimula, I. A., Willoughby, A. A., Oladipo, O. A., Olawepo, O.

“…This study documents some results of the effect of the 29 March 2006 eclipse on the ionosphere over Ilorin, Nigeria (longitude 4.57°E, latitude 8.53°N, dip…”
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Analysis on 29 March 2006 eclipse effect on the ionosphere over Ilorin, Nigeria by Adeniyi, J. O., Oladipo, O. A., Radicella, S. M., Adimula, I. A., Olawepo, A. O.

“…Ionospheric measurements obtained during the 29 March 2006 eclipse period over Ilorin, Nigeria (longitude 4.57°E, latitude 8.53°N, dip 4.1°S), an equatorial…”
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Variability of the ionospheric electron density at fixed heights and validation of IRI-2007 profile’s prediction at Ilorin by Oladipo, O.A., Adeniyi, J.O., Radicella, S.M., Adimula, I.A.

“…A study on the variability of the equatorial ionospheric electron density was carried out at fixed heights below the F2 peak using one month data for each of…”
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Assessment of IRI and IRI‐Plas models over the African equatorial and low‐latitude region by Adebiyi, S. J., Adimula, I. A., Oladipo, O. A., Joshua, B. W.

“…A reliable ionospheric specification by empirical models is important to mitigate the effects of the ionosphere on the operations of satellite‐based…”
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Variability of foF2 for an equatorial station and comparison with the foF2 maps in IRI model by Adeniyi, J.O., Oladipo, O.A., Radicella, S.M.

“…In this study, foF2 data obtained from an equatorial station in West Africa were subjected to an occurrence probability distribution test. This was done on an…”
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Variability of equatorial ionospheric electron density at fixed heights below the F2 peak by Oladipo, O.A., Adeniyi, J.O., Radicella, S.M., Obrou, O.K.

“…A study on variability of the equatorial ionosphere was carried out at fixed heights below the F2 peak for two different levels of solar activity. The study…”
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Validation of B0 and B1 in the IRI 2001 model at low solar activity for Ilorin an equatorial station by Adeniyi, J.O., Radicella, S.M., Adimula, I.A., Willoughby, A.A., Oladipo, O.A., Olawepo, O.

“…A new set of data obtained at low solar activity from Ilorin, Nigeria (geog. latitude 8.5°N, geog longitude, 4.6°E, dip 4.1°S) is used to validate the IRI 2001…”
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Comparative Investigation of the Digisonde‐Derived Electron Density and IRI Profiles at a Station Near the African Magnetic Equator During LowSolar Activity by Adebiyi, S. J., Adeniyi, J. O., Adebesin, B. O., Ikubanni, S. O., Adimula, I. A., Oladipo, O. A., Olawepo, A. O., Adekoya, B. J., Joshua, B. W.

“…Information about the altitudinal distribution of ionospheric electron density (Ne) in the African equatorial region is very scanty. Such information is vital…”
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Electron density distribution at fixed heights N( h): Gaussian distribution test by Oladipo, O.A., Adeniyi, J.O., Radicella, S.M.

“…Occurrence probability distribution (Gaussian distribution) test was carried out at selected fixed heights on the electron density profile, N( h), for selected…”
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Quantitative Characteristics of Equatorial Ionization Gradient Above 150 km at Low Solar Activity by Adebesin, B. O., Adeniyi, J. O., Oladipo, O. A., Olawepo, A. O., Adimula, I. A.

“…The electron ionization gradient (dN/dh) characteristics were quantitatively presented using data from Ilorin (8.50°N, 4.68°E) Digisonde during low solar…”
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Geomagnetic Storms Impact on Post-sunset Equatorial Ionosphere at Ilorin During 2010 by Olawepo, A. O., Oladipo, O. A., Sodiq, S., Odeyemi, O., Joshua, B. W., Adebiyi, S. J., Adeniyi, J. O., Adimula, I. A.

“…Night-time equatorial ionosphere has been known to be characterised by irregularities which manifest as spread F in ionograms and as L-band scintillations in…”
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Three-dimensional finite-element simulations of a scanning microwave microscope cantilever for imaging at the nanoscale by Oladipo, A. O., Kasper, M., Lavdas, S., Gramse, G., Kienberger, F., Panoiu, N. C.

“…We use three-dimensional finite-element numerical simulations to fully characterize the electromagnetic interactions between a metallic nano-tip and cantilever…”
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GNSS single frequency ionospheric range delay corrections: NeQuick data ingestion technique by Oladipo, O.A., Schüler, Torben

“…A study of the performance of the NeQuick model and the Klobuchar model for GNSS single frequency range delay correction on a global scale was done using data…”
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Pattern of Ionization Gradient, Solar Quiet Magnetic Element, and F2‐Layer Bottomside Thickness Parameter at African Equatorial Location by Adebesin, B. O., Adeniyi, J. O., Adimula, I. A., Adebiyi, S. J., Ikubanni, S. O., Oladipo, O. A., Olawepo, A. O.

“…The study of ionization gradient (dN/dh) profile in the description of ionospheric dynamics is not common. This is the first attempt at finding the dependence…”
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Latitudinal and Seasonal Investigations of Storm-Time TEC Variation by Adimula, I. A., Oladipo, O. A., Adebiyi, S. J.

“…The ionosphere responds markedly and unpredictably to varying magnetospheric energy inputs caused by solar disturbances on the geospace. Knowledge of the…”
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Investigation on mid-latitude stations to storm-time variations of GPS-TEC by Adebiyi, S.J., Adimula, I.A., Oladipo, O.A.

“…•We study the storm time TEC variation at four mid latitudes in both hemispheres.•TEC variation reveals a clear hemispheric and seasonal asymmetries during…”
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The role of the F-region vertical drift on the onset time of the equatorial spread F over Ilorin, Nigeria by Oladipo, O A, Adeniyi, J O, Adimula, I A, Olawepo, A O, Olowookere, A, Salifu, F U, Radicella, S M, Reinisch, B W

“…The equatorial ionosphere often shows the occurrence of plasma-density irregularities and velocity fluctuations with a broad range of scale sizes and…”
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