Journal articles: 'Radio stations – Nigeria'

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Julius-Adeoye, ‘Rantimi Jays. "Community radio: an instrument for good governance in Nigeria." EJOTMAS: Ekpoma Journal of Theatre and Media Arts 7, no. 1-2 (April 15, 2020): 348–61. http://dx.doi.org/10.4314/ejotmas.v7i1-2.23.

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Decree No. 38 of 1992 enacted under the administration of General Ibrahim B. Babangida put a stop to fifty seven years of government’s exclusive ownership and operation of broadcasting in Nigeria. However, with the cost of setting-up, management and obtaining license for media station being prohibitively expensive, the system can only be accessed by the rich and powerful in the society, thereby depriving rural communities’ involvement in the development of the country. As part of the panoply of strategies to ensure rural communities’ participation in democratic governance, there is need for the establishment of rural community radio stations, which is very much different from educational institutions’ type currently being paraded as community radios but rather a training room for communication and theatre arts students. Using historical-analytic method, this article looks at the role community radio could play in making good governance in Nigeria accessible to every segment of society, especially the rural populace. Therefore, it is recommended that Nigerian Broadcasting Commission (NBC) policy should consider the inclusion of community radio as the third in the sector of radio broadcasting in Nigeria after public and commercial ownership. Furthermore, since community radio is essentially non-for-profit, government should make the operation licence free or at a minimal cost to the host community. Keywords: Community radio, NBC, Good governance, People’s participation, Nigeria

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Bello, N., and F. O. Edeko. "Designing a Spectrum Allocation Chart for Nigeria." Nigerian Journal of Environmental Sciences and Technology 5, no. 2 (October 2021): 320–28. http://dx.doi.org/10.36263/nijest.2021.02.0277.

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The regulation of the radio spectrum today by government agencies addresses the issue of interference between radio stations by allocating, allotting and registering bands of radio-frequencies. The framework of management is done at the international, regional and national level. With this paper, we present a study of the radio spectrum allocation policies in some leading countries and Nigeria. However, narrowing the study down to the detailed design of spectrum allocation charts. The study used the information in the national table of frequency allocation (NTFA) to design the spectrum allocation chart of Nigeria with Photoshop application. The spectrum allocation chart was designed with high resolution for high zoom capabilities so that researchers can gain a quick overview of the radio services allocated in the radio spectrum in Nigeria.

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Oluwafemi, Ilesanmi B., Adedeji M. Faluru, and Tayo D. Obasanyo. "Radio frequency peak and average power density from mobile base stations in Ekiti State, Nigeria." Bulletin of Electrical Engineering and Informatics 10, no. 1 (February 1, 2021): 224–31. http://dx.doi.org/10.11591/eei.v10i1.1879.

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The ever-increasing number of mobile telecommunication base station as a result of increasing demand for broadband applications has raised a growing concern and worry over the health implications and safety of the radiations from these base stations by the resident of Ekiti State and Nigeria in Nigeria. Measurement of radio frequency was conducted in this research in order to study the electromagnetic field radiation level in Ekiti State Nigeria. Investigation was conducted with the four available mobile operators with the three sub-frequency band viz 900 MHz, 1800 MHz and 2100 MHz. The power density of radio frequency radiation was estimated through measurement with the aid of A 3-Axis RF Radiation Strength Meter TM-196 and Handheld Spectrum Analyzer Model NA-773, 144/430. The peak and average power density was computed using the method of theoretical calculation and the safety distance from the antennas were estimated. The measured and the calculated values were compared with the international commission on non-ionizing radiation protection (ICNIRP) standard for public and occupational exposure level. Results show that the radiations from the base stations adheres to the standard provided by ICNIRP

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Adegboyega, Gabriel Adisa, and Temitope Sadiq. "Diurnal Variation of Surface Radio Refractivity Over Three Meteorological Stations in Nigeria." Journal of Communications Technology, Electronics and Computer Science 6 (June 27, 2016): 6. http://dx.doi.org/10.22385/jctecs.v6i0.104.

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Analysis and study of the vertical variation of refractivity in the troposphere is required for radio systems planning in order to achieve successful operation. The diurnal variation of surface radio refractivity over three meteorological stations in Nigeria is presented. The stations include Lagos-Ikeja (6⁰35’N, 3⁰40’E), Akure (7⁰15’09”N, 5⁰11’35”E) and Minna (9⁰37’N, 6⁰32’E). Monthly mean values of temperature, pressure and relative humidity were used to compute refractivity for three stations. The surface refractivity also shows latitudinal and seasonal variation. The maximum refractivity values were obtained for Ikeja (Lagos) of 394 N-units, Akure of 404 N-units and Minna of 364 N-units.

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Adediji, A. T., Mahamod Ismail, and J. S. Mandeep. "Variation of radio field strength and radio horizon distance over three stations in Nigeria." Journal of Atmospheric and Solar-Terrestrial Physics 109 (March 2014): 1–6. http://dx.doi.org/10.1016/j.jastp.2013.12.006.

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Gever, Verlumun Celestine, and Gregory Ezeah. "The media and health education: Did Nigerian media provide sufficient warning messages on coronavirus disease?" Health Education Research 35, no. 5 (August 9, 2020): 460–70. http://dx.doi.org/10.1093/her/cyaa020.

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Abstract Previous studies on media coverage of health issues hardly recognize the role of time in moderating media contents. Instead, scholars most often examine how news media report health issues. In this study, we recognized the role of time by taking into account how media report differs based on when a global outbreak is confirmed in a country and when it is not. We focused on coronavirus disease 2019 (COVID-19) and examined six media—two TV stations, two newspapers and two radio stations. We content-analysed 537 stories and found that there were few stories about the virus before it was confirmed in Nigeria. But as soon as Nigeria recorded a confirmed case, the number of stories tripled. We also noticed that story format and recommendation on health behaviour were also closely linked to the COVID-19 status of Nigeria. However, we did not find an association between Nigeria’s COVID-19 status and policy recommendation among the media studied. Therefore, this study concludes that Nigerian media did not provide sufficient health warning messages on COVID-19 before its spread to the country.

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Bello, Hashim Sabo, Sa’adatu Umar Idris, and Abubakar Bappayo. "Media and educational technology in Nigeria: Managing the broadcast programmes of Radio Nigeria Globe FM towards girl child education." International Journal of Innovative Research in Education 7, no. 1 (June 30, 2020): 16–25. http://dx.doi.org/10.18844/ijire.v7i1.4715.

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This study was carried out in Shall and Yalwa village areas of Tafawa Balewa and Dass local government areas, respectively, in Bauchi state (Nigeria) with a strong view of determining the efficacy of media in education towards managing girl child issues in Nigeria. An intensive oral interview was employed in data collection from staff of Radio Nigeria Globe FM, as well as the students and staff of schools and the parents from both Shall and Yalwa villages. The study employed a survey design and utilized a documentary approach to obtain data. Descriptive statistics (means, frequency and percentages) and χ2were used in analysing the socio-economic characteristics of the stakeholders in girl child education. The results revealed that 91.2% of the responses hold the opinion that the strategies used by the Radio Nigeria GlobeFM to intervene in girl child education proffered unique and far-reaching benefits in educating the girl child to discover herself and associate with the right group of people, marry the right kind of men, make the right contributions and help men develop sustainable environment. The results also revealed that 61.8% of the responses hold the belief that Radio Nigeria GlobeFM programmes on the Nigerian girl child are much effective, educative and relevance. The study suggested that the adoption of educational technology strategies is a way forward to managing girl child education, which is a progressive approach in Nigeria, there by setting up booster stations and organise village rallies, discussion programmes with women as moderators to serve as role models for young girls, radio links programme to initiates talks with parents and other stakeholders, initiate kiddies programme fashioned after the likes of the world of children and finally strategies for career guidance. Keywords: Broadcast programme, educational technology, girl child, management, media.

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Tanko, M. M., M. U. Sarki, and M. A. Bilya. "Seasonal Variation of Radio Refractivity of Some Selected Stations in Northern Nigeria." Current Journal of Applied Science and Technology 32, no. 1 (January 2, 2019): 1–12. http://dx.doi.org/10.9734/cjast/2019/45326.

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Enwere, Chinotu Micah, and Vincent I. Nnebedum. "Perspectives of Digital Broadcasting in Nigeria - Discussion of Challenges and Solutions." International Journal of Engineering Research in Africa 15 (April 2015): 134–40. http://dx.doi.org/10.4028/www.scientific.net/jera.15.134.

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Nigeria with a population of over 140 million, with 187 radio stations, and 143 television stations, the largest in the African continent, quickly accepted the technology switchover system in broadcast as it will seriously affect the people and Government of the country if not managed. Nigeria joined the global digitalization train, with specific switchover date fixed at June 17, 2012, three years ahead of the International Telecommunication Union, ITU, global deadline set date for 2015 for the entire broadcasting stations in the world to go digital. The truth is, Nigeria never went digital with respect to the June 17, 2012 switchover date. A new switch over date of 2015 was set, but there is doubt if the new target date could be met. The strengthening of public awareness and education on what digitalized broadcasting involves and what is needed to be put in place by the government, stakeholders and consumers for a successful transition to digital broadcasting is still low. This article focuses on Digital Broadcasting in Nigeria: What is it and what is needed to be put in place for a successful takeoff.

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Yusuf, Ibrahim Uba, Musa Usman, and Adamkolo Mohammed Ibrahim. "A comparative study of BRTV and NTA Maiduguri regarding their compliance with Nigeria Broadcasting Code on religious programming." Informasi 50, no. 1 (August 4, 2020): 71–84. http://dx.doi.org/10.21831/informasi.v50i1.29106.

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The regulation of broadcast religious programming is a critical challenge the National Broadcasting Commission (NBC) is facing in Nigeria. In Maiduguri, the capital of the north-eastern Nigerian state of Borno where religion forms a core part of the people’s culture, a great deal of Borno Radio Television (BRTV) and Nigerian Television Authority Maiduguri’s (NTA Maiduguri) airtime is allocated to Islamic preaching during the Muslim’s annual Ramadan fasting. However, there is a dearth of research on whether the airtime those broadcast stations allocate to Islamic programming complies with the NBC code on religious programming. This research gap formed the main research question of this study which was conducted during the second quarter of 2019. Primary data were collected using key informant interviews with five personnel from the two broadcast stations and the Maiduguri office of NBC, while secondary data were obtained through the review of official documents. Key findings showed that the airtime allocatedto religious programmes exceeded the 10% NBC limit, BRTV allocated more airtime to religious programmes than NTA Maiduguri and Islamic programmes were allocated more airtime than programmes of other religions. Recommendations on how to improve compliance to NBC’s regulations were offered at the end.Peraturan program siaran keagamaan merupakan tantangan bagi NationalBroadcasting Commission (NBC)/Komisi Penyiaran Nasional di Nigeria. Maiduguri, ibukota Negara bagian Borno, Nigeria Timur Laut di mana agama merupakan bagian inti dari budaya masyarakat, banyak Radio Televisi Borno (BRTV) dan Otoritas Televisi Nigeria Maiduguri (NTA Maiduguri) mengalokasikan jam tayang untuk khotbah Islam selama Ramadhan. Namun, ada kelangkaan penelitian tentang apakah jam tayang yang disiarkan oleh stasiun-stasiun siaran itu untuk program Islami. Kesenjangan penelitian ini membentuk pertanyaan penelitian utama yang dilakukan selama kuartal kedua 2019. Data penelitian ini dikumpulkan menggunakan wawancara informan kunci dengan lima personel dari keduanya stasiun siaran dan kantor Maiduguri NBC, sementara data sekunder diperoleh melalui telaah dokumen resmi. Temuan penelitian ini menunjukkan bahwa “airtime” (jam tayang) dialokasikan untuk program keagamaan yang melebihi batas 10% NBC, BRTV mengalokasikan lebih banyak “airtime” ke program keagamaan dari NTA Maiduguri dan program Islam dialokasikan lebih banyak “airtime” daripada program agama lain. Implikasi dari penelitian ini adalah perlunya kepatuhan terhadap peraturan NBC.

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Kazaure, Jazuli S., Ugochukwu O. Matthew, Nwamaka U. Okafor, and Ogobuchi Daniel Okey. "Telecommunication Network Performances and Evaluation of Radio Frequency Electromagnetic Radiation." International Journal of Information Communication Technologies and Human Development 13, no. 3 (July 2021): 16–37. http://dx.doi.org/10.4018/ijicthd.2021070102.

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The ongoing mobile communication technology intensification had occasioned the inevitable multiplications in the ratio of the radio frequency base service stations which had raised public consciousness over the considerable health hazards of the radioactive emissions from the communication systems. The current paper analysed the sequences of electromagnetic field measurements performed on the selected three states in the North West Nigeria in order to establish the compliance of radiation levels of cellular base stations and wireless fidelity access points with respect to internationally approved recommendations. The measured power densities of wireless fidelity access points are minimal and do not surpass 1% of the level allowed by International Commission on Non-Ionizing Radiation (ICNIRP). The result confirmed the environmental safety of the RF energy maintained by the telecommunication operators within the general public indicating an insignificant health hazards to the citizens.

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Adeyemi, B. "Surface water vapour density and tropospheric radio refractivity linkage over three stations in Nigeria." Journal of Atmospheric and Solar-Terrestrial Physics 68, no. 10 (June 2006): 1105–15. http://dx.doi.org/10.1016/j.jastp.2006.01.012.

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Orike, Sunny, Promise Elechi, and Iboro Asuquo Ekanem. "Assessment and Modeling of GSM Signal Propagation in Uyo, Nigeria." European Journal of Engineering Research and Science 2, no. 11 (November 30, 2017): 49. http://dx.doi.org/10.24018/ejers.2017.2.11.502.

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High quality of service is a paramount concern in wireless networks. One of the strategies in achieving optimal performance is to use wireless empirical models to predict wireless link quality factors such as path loss and the received power in any given transmission domain with irregular terrain. The primary goal of this study is to develop a radio wave propagation model for Uyo metropolis. An assessment was carried out in three major roads within the city of Uyo in Akwa Ibom State, to determine the quality of GSM signal reception by measuring the signal field strength, magnetic field strength, and power density of the base transceiver stations. The measurements were carried out using radio frequency electromagnetic field strength meter over a distance of 2000 meters from the base stations. The results of the measurements were analysed and a path loss model was developed for Uyo using linear regression model. Three empirical models: Okumura-Hata model, COST-Hata model, and Egli model were also applied in predicting the path loss in Uyo and the results obtained were compared with the developed model for Uyo metropolis. The comparison showed that Route D model had a better comparison factor with the developed model while the Okumura-Hata and COST-Hata were almost the same with more loss as the distance increased. In all the measurements, the standard deviation was between 3.31 dB and 3.36 dB.

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Nwankwo, Victor U. J. "Assessment of Radio-Frequency Radiation Exposure Levels from Selected Mobile Base Stations (MBS) in Lokoja, Nigeria." IOSR Journal of Applied Physics 3, no. 2 (2013): 48–55. http://dx.doi.org/10.9790/4861-0324855.

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Muyideen, Ogunmefun Folorunsho, and Raheem Olalekan Akeem. "Sociological Implications on Safety of Journalism as a Profession in Nigeria." Randwick International of Social Science Journal 1, no. 1 (April 25, 2020): 73–87. http://dx.doi.org/10.47175/rissj.v1i1.12.

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All over the world, Journalists are known as the fourth realm of the Estate charged with the responsibility of disseminating information to the societal members. Despite the contribution of the noble profession towards nation building, large number of journalist in the past and recent time in Nigeria faces series of challenges ranging from kidnapping, assault, harassment, torture, arbitrary detention, murder, imprisoned at the virtue of saving the nation. The gravity and magnitude of the prevalence insecurity in the profession has gotten to a state of psychological trauma and lost of interest for the profession. Several publications were reviewed; Anomie (Robert Merton) and Situational Crime Prevention (Ronald Clarke) theories were adopted. Qualitative method and purposive sampling technique was adopted in conducting in-depth interviews among 10 public members and 25 journalists from 4 media print Organisations, 3 radio stations and 2 television stations in Nigeria, In Nigeria journalist are faced with numerous insecurity issues and there is an urgent need to readdress the issues to save the nation from retrogressive development. Several recommendations are stated to safe the profession( a) the struggle for the survival of the profession should not be left alone to either the Government or the journalists it should be collectively addressed by all, More so, proactive methods, deterrence measures target hardening, access and facilitators control needs to be in placed to tackle the menace

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Inya, Blessing T., and Onwu Inya. "Conversational humour in a Nigerian radio news programme: A case study of Lati inu aka aka Biodun/Kayode." European Journal of Humour Research 6, no. 4 (December 30, 2018): 75. http://dx.doi.org/10.7592/ejhr2018.6.4.inya.

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This paper investigates the Generic Structure Potential (GSP) of Lati inu aka aka Biodun/Kayode (LIABK), a Nigerian secondary gatekeeping radio news programme, with the aim of indicating the stages of the genre where conversational humour typically occurs, and then it analyses humour types in the data through the neo-Gricean concept of untruthfulness and pragmatic act theory. The data for the study constitute a ten hour audio recording of Lati inu aka aka Biodun/Kayode from two radio stations in Ekiti and Ondo States, South-Western Nigeria. The GSP of LIABK is constituted by five obligatory elements: Opening (O), Advertisement (A), Pre-news Presentation (PnP), News Presentation (NP) and Closing (C). The genre-based expectations for O, PnP and C, and then NP are to provide entertainment and information to the listeners respectively. Thus, humour typically occurs in the O, PnP, and C stages of the programme, and rarely occurs in NP. Four humour types are indicated: song-as-humour, absurdity, joint fantasising and speaker-meaning-telic humour respectively. While song-as-humour resists being neatly categorised as autotelic humour, absurdity and joint fantasising are easily characterised as thus. The pragmatic act analysis reveals the incremental, sequential and co-constructed nature of the humour types. Furthermore, the pragmemes of entertainment and offering of opinion by the news presenters constitute the affordances or genre-based expectations that constrain the social activities that constitute LIABK. The study contributes to the scholarship on secondary gatekeeping in Nigeria broadcast media, conversational humour and pragmatics.

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Bappayo, Abubakar, and Zanna Maidunoma. "Role Of Radio Stations In Creating Awareness On Proper Solid Waste Management Practice In Yobe State, Nigeria." SocioEconomic Challenges 2, no. 3 (2018): 95–102. http://dx.doi.org/10.21272/sec.3(2).95-102.2018.

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Abdullahi, Z. M., O. U. Okereke, A. I. Isa, and A. Ozovehe. "Development of Radio Propagation Path Loss Model for Kaduna Town, Nigeria Using GMDH Algorithm." European Journal of Engineering Research and Science 5, no. 10 (October 25, 2020): 1253–59. http://dx.doi.org/10.24018/ejers.2020.5.10.2042.

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Radio propagation measurement were acquired at the 900 MHz and 1800 MHz frequency bands from six (6) live base stations (BS1 to BS6) in Kaduna town, Nigeria using an Asus Zenfone enhanced with a network monitoring software (Network Cell Info Lite). The receive signal strength (RSS) measurements were taken from the BSs at a distances of 200 m apart (in dB) until the signal faded out and the measurements were taken for twelve (12) calendar months which covered all seasons of the year, the corresponding path loss were calculated which were subsequently used to develop a propagation path loss prediction model with the Group Method of Data Handling (GMDH) algorithm. However, the results obtained shows very small variations between the model fit (which was the best fit curve from the measured data) and the predictions (which is the forecast). Hence, since the variations between the model fit and the predictions are not wide, with sometime the values of prediction being better than that model fit, the GMDH model is showing good prediction for Kaduna metropolis.

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Tanko, M., A. Akinbobola, M. Liman, and J. Ojo. "Assessment of Tropospheric Variation of Radio Refractivity and Field Strength Variability over Some Selected Stations in Northern Nigeria." Physical Science International Journal 18, no. 1 (May 15, 2018): 1–19. http://dx.doi.org/10.9734/psij/2018/41320.

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Falodun, Falodun, Omotoso Omotoso, and Ashidi Ashidi. "Estimation of multipath propagation and fade margin over Coastal area." APTIKOM Journal on Computer Science and Information Technologies 3, no. 3 (November 1, 2018): 77–83. http://dx.doi.org/10.11591/aptikom.j.csit.124.

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Atmospheric weather parameter is dynamic in nature, hence the need for continuous investigation of the anomalous propagation phenomenon. The coastal region is more unique in its characteristics due to the rapid and continuous variation in the weather parameters. This paper presents the results from 10 years (2006 – 2015) of reanalysis data of meteorological parameters (temperature, relative humidity and atmospheric pressure) obtained from European Center for Medium-Range Weather Forecasts (ECMWF). The data covers some selected stations in the coastal region of Nigeria namely: Port-Harcourt, Warri, Calabar, Arogbo, Oron, Yenagoa and Lagos Island at four synopsies hours of the day (6 hrs, 12 hrs, 18 hrs and 24 hrs). The resolution of the ECMWF data is 0.25 by 0.25. Radio refractivity, refractivity gradient, point refractivity and geoclimatic factor are estimated from the data. Subsequently, the results were used to deduce percentage of fade depth exceedance. The overall resultsa will assist to ascertain the level of signal degradation due to multipath fading and fade depth over the coastal regions of Nigeria

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ADEJUMOBI, I. A., J. F. ORIMOLADE, and B. A. OMOTAYO. "MEASUREMENT AND ANALYSIS OF RADIO FREQUENCY ENERGY AND SPECIFIC ABSORPTION RATE FROM GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS IN FUNAAB, OGUN STATE, NIGERIA." Journal of Natural Sciences Engineering and Technology 14, no. 1 (March 2, 2016): 120–29. http://dx.doi.org/10.51406/jnset.v14i1.1501.

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This work measured and analyzed the Radio Frequency (RF) power densities to determine the absorption rate on human body from the four available 900 MHz Global System for Mobile communication (GSM) base stations, at some selected points in the Federal University of Agriculture, Abeokuta (FUNAAB), Nigeria.ª¤? Measurements were conducted using Frequency-selective spectrum analyzer (Nokia 6800 Network Drive Tester) to determine the RF Power Densities (S), Electric Field Intensities (E) and the Specific Absorption Rates (SAR), using Airtel Base station as reference sample point. Standard Units values of the measured variables were obtained using standard mathematics equations. Out of ten (10) selected sampling points the maximum RF exposure was obtained at COLENG upstairs with its the power density equal 15.2 ª¤?W/m2 which is 3.7 x 10-4% of the maximum allowable value of the maximum exposure at 900 MHz. The recorded highest electric field intensities was 75.7 x 10-3 V/m, which is 0.18% of that specified by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) maximum public exposure levels for 900 MHz. The highest obtained SAR value was 4.2635 x 10-3 W/kg which is 5.329% of the maximum recommended exposure level for the head region and brain tissue at 900 MHz. The results from this study are useful sources of environmental information and database to the FUNAAB communityª¤?

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Felix, U., O. Gregory, C. Ononugbo, and E. Oghenevovwero. "Evaluation of Exposure of Radio Frequency Field (RF) Radiation from Mobile Communication Base Stations in Port Harcourt, Rivers State, Nigeria." Archives of Current Research International 10, no. 4 (January 10, 2017): 1–8. http://dx.doi.org/10.9734/acri/2017/34549.

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Omotosho, T. V., and C. O. Oluwafemi. "Impairment of radio wave signal by rainfall on fixed satellite service on earth–space path at 37 stations in Nigeria." Journal of Atmospheric and Solar-Terrestrial Physics 71, no. 8-9 (June 2009): 830–40. http://dx.doi.org/10.1016/j.jastp.2009.03.016.

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Felix, U., O. Gregory, E. Oghenevovwero, and Akpata Chinelo. "Risks Associated with Radio-frequency Radiation Exposure at Close Proximities to Mobile Phone Base Stations in Port Harcourt, Rivers State, Nigeria." Current Journal of Applied Science and Technology 24, no. 3 (November 4, 2017): 1–8. http://dx.doi.org/10.9734/cjast/2017/33104.

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Ayimoro, Oluwatoyin Dorcas. "Voter Education on Radio as Determinant of Voting Pattern of Indigenous Elderly Women in Akoko Land, Ondo State, Nigeria." American International Journal of Humanities, Arts and Social Sciences 1, no. 2 (December 8, 2019): 89–97. http://dx.doi.org/10.46545/aijhass.v1i2.127.

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Indigenous Nigerian society respect and believe so much in her elderly. Males and female elderly are transmitters of traditional norms and values in a sustainable manner in each community. As such, they are the sage and kingmakers appointing, decision makers through careful and flawless selection from character check overtime, delving into family history and divination of the traditional oracle. After coronation, such leaders are never corrupt; they live up to expectation by promoting the wellbeing of the masses. However, this practice has been eroded by colonization and westernization for a democratic way of appointing leaders through voting; as such countries design voter education for her citizenry. This study thus examined voter education as a determinant of voting pattern of indigenous elderly women in Akoko land through these research questions: (i) what is the demographic characteristics of the elderly women in the study area? (ii) What kind of voter education programmes is available on the selected radio stations? (iii) What is the level of participation of the women on the programme on radio? (iv) To what extent has the women benefited from their participation in voter education programme on radio? (v) How has the voter education received influenced the voting pattern of the women? The study adopted the descriptive survey research through multi stage sampling technique by purposively selecting sixty indigenous elderly women from areas of the four Local Government ( Okorun, Ese, Agbaluku, Iwaro-Oka, Supare, Oba, Erusu, Okeagbe. Findings of the study showed that voter education in the study area impacted minimally on the respondents resulting in their skewed knowledge and voting pattern (Grand mean 2.71+2.46+2.19+2.13=116.9/4=29.2). It is recommended among others that voter education should include indigenous education, a larger coverage and quality.

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Sunday O, Olowe, Oriowo Olumuyiwa, and Ibitowa Adeshina. "ACCOUNTANTS AND ICT: BEYOND THE FIGURES FOR SOCIO-ECONOMIC CHANGE." International Journal of Engineering Technologies and Management Research 4, no. 7 (February 1, 2020): 40–48. http://dx.doi.org/10.29121/ijetmr.v4.i7.2017.92.

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This paper fosters the importance and need of international cooperation for use & promotion of Information and Communication Technologies for economic change in Nigeria among professional accountants. The concept of “Information Society” has made it imperative that no country can develop without involving and focusing on regional and global development perspectives. Collaboration has become the key word. When we talk of integrated socio-economic change, it takes into account many areas which can benefit from faster access and enhanced productivities by using ICT. Some case studies on use of ICT for different initiatives within Nigeria are reviewed and conclusions drawn on how it does support the socio-economic change and development, which may be similar and bear lessons for other developing countries. The supply side of ICTs has increased substantially in Kenya. For example, the number of mobile phone subscribers has more than tripled over the past five years, while FM radio stations have proliferated all over the country. There has been a lot of enthusiasm on internet usage with the landing of three undersea fibre optic cables in Lagos and their subsequent operationalization. Marxs of mobile phone service providers and communication equipment now dot both the rural and urban landscapes, and advertisements for some form of ICTs are common on billboards along major highways and roads.

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Komodromos, Marcos. "Interactive radio, social network sites and development in Africa: a literature review study." Journal of Enterprising Communities: People and Places in the Global Economy 15, no. 2 (April 5, 2021): 282–95. http://dx.doi.org/10.1108/jec-06-2020-0111.

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Purpose The technology determinism theory facilitated in assessing the impact of interactive radio and social network sites (SNSs) on development factors such as education, agriculture, health, and governance, by conducting an integrative and comprehensive literature review focusing on African countries. This paper aims to conduct this literature review to provide comprehensive empirical evidence on the impact of interactive radio and SNSs on development in Africa. Design/methodology/approach This study examined articles that were retrieved from online databases including EBSCOhost, Elsevier, Science Direct, SAGE Journals, Springer and Wiley Online Library. The keywords used included interactive radio, radio, development in Africa, SNS, agriculture, education, health, peace and governance. Search phrases were formulated using boolean operators “AND” and “OR.” Findings Study results revealed that interactive radio and SNSs improve knowledge among farmers and allow the dissemination of information on innovative agricultural techniques, which supports the adoption of sustainable practices. Interactive radio promotes political accountability because the strategies provide the voiceless and powerless communities with a platform to express themselves. This paper discovers that the incorporation of SNS with existing multimedia communication facilitates the dissemination of health-related information on illnesses such as Ebola, HIV, hypertension, diabetes and Polio, and interactive radio and SNS promote education among marginalized communities and under-served rural schools. Research limitations/implications The findings on the impact of interactive radio and SNSs do not represent all 54 countries in Africa. Although the studies included in this literature review were conducted in several countries such as South Africa, Nigeria, Somalia, Kenya, Malawi, Ghana, Tanzania, Uganda and Zambia, this limited the generalizability of the findings and recommendations. Also, the other potential limitation is that using the inclusion-exclusion criteria could have resulted in bias when selecting the studies to include in the review. Practical implications The paper might serve as a valuable source of information for students, academics and entrepreneurs where the impact of interactive radio and SNSs on agriculture, education, health and governance, which are core determinants of development in Africa, has been assessed for further case studies in this area. Social implications The use of interactive radio has helped in decreasing health issues caused by a deficiency in vitamin A among children in sub-Saharan Africa. Originality/value The development of sustainable and effective interactive radio programs is dependent on the collaboration of the core stakeholders such as governmental ministries, donor organizations and the mass communication sector. Numerous open sources on technology radio stations are available to employ social media managers to help in the application of knowledge.

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Akande, Olukunle Akinyinka, Onyebuchi Chikezie Nosiri, Agubor Cosmas Kemdirim, and Okpara Chinedu Reginald. "Implementation of Particle Swarm Optimization Technique for Enhanced Outdoor Network Coverage in Long Term Evolution Network in Port Harcourt, Nigeria." European Journal of Engineering Research and Science 2, no. 5 (May 19, 2017): 36. http://dx.doi.org/10.24018/ejers.2017.2.5.346.

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This paper describes the development of optimized model for urban outdoor coverage in Long Term Evolution (LTE) network at 2300 MHz frequency band in Port Harcourt urban region, Nigeria. Signal attenuation and fluctuation remain amongst the major channel impairments for mobile radio communication systems. This arises as a result of model incompatibility with terrain and Line of Sight (LOS) obstruction of the channel signals. Some path loss models such as Okumura-Hata, COST 231, Ericsson 999, Egli and ECC-33 models were evaluated for suitability and compared with the modified model for the environments. The models were based on data collected from LTE base stations at three geographical locations in Port Harcourt namely- Rumuokoro, Eneka and Ikwerre roads respectively. The simulation was implemented using MATLAB R2014a software. The modified model was further optimized with some selected parameters such as Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) using Particle Swarm Optimization (PSO) technique. The results obtained gave rise to 3.030dB for RMSE and 0.00162dB for MAE respectively. The results obtained from the PSO optimized model demonstrated a better performance which is suitable for cell coverage planning and smooth handoff processes.

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Jimola, Folasade Esther, and Graceful Onuvughe Ofodu. "Sustaining Learning during COVID-19 Seismic Shift: The Need to Develop Flexible Pedagogy." Interdisciplinary Journal of Education Research 3, no. 1 (March 9, 2021): 13–26. http://dx.doi.org/10.51986/ijer-2021.vol3.01.02.

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This study examines the impact of COVID-19 pandemic on educational system; investigates how meaningful learning is promoted and continued despite the unprecedented global challenges; and investigates if the channels through which learning is promoted cater for students' learning styles. Two hundred and one secondary school students selected from Ekiti State, Nigeria, participated in the descriptive research study. A validated questionnaire was used to gather data from the respondents. The study found out that the learning channels mostly employed during the pandemic were television stations, school on-air via radio programme, virtual learning, and private teaching. The findings revealed that respondents had no preference for specific perceptual learning styles but embraced different learning channels employed. They modified their learning styles and developed flexibility in learning. A recommendation was provided that new viable policies that promote diverse learning opportunities and alternative learning strategies capable of mitigating the present and future academic obstructions should be made and diligently implemented. This paper concludes that during future emergencies, diverse learning platforms, channels, and digital media employed for learning should cater to students' learning styles: visual, auditory, tactile, kinesthetic, group, and individual. It is noteworthy that learners would learn better if they are exposed to varieties of teaching/learning media.

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Orifah, Olusegun Martins, Messiah Chijioke Ijeoma, Gloria Isi Omokhudu, Gabriel T. Ahungwa, and Bashir Garba Muktar. "Awareness of the environmental implications of the unsustainable use of biomass energy sources among rural households in Jigawa State, Nigeria." Acta Universitatis Sapientiae, Agriculture and Environment 10, no. 1 (December 1, 2018): 39–51. http://dx.doi.org/10.2478/ausae-2018-0004.

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Abstract Use of biomass energy is on the increase in rural areas of Nigeria, and its use poses serious environmental challenges. The study assessed the awareness of the environmental implications associated with the unsustainable use of biomass energy sources among rural households in Jigawa State, Nigeria. Multistage sampling procedure was used to select 120 respondents for the study using structured questionnaire. Collected data were analysed using descriptive (frequency counts, percentage, mean, and rank) and inferential statistics (chi-squared test). The result revealed that the majority of the respondents were male (94.2%), married (90.8%), and between 31 to 40 years, with a mean age of 39.8 years. Results further revealed that the majority of the respondents were farmers (56.7%), had Qur’anic education (71.7%), and earned a monthly income of N10,000–N20,999 (52.5%), with a mean monthly income of ₦13,816.67. Use of fuel wood (100%) and charcoal (100%) were the dominant biomass energy sources used. Results at the level of awareness revealed that the majority of the respondents (80.8%) had low awareness of the environmental implications associated with the unsustainable use of biomass energy sources. The respondents’ main source of information on the environmental implications associated with the unsustainable use of biomass energy sources were radio (64.17%) and extension agents (54.2%). The high cost of other alternatives, scarcity of refilling stations, scarcity of the alternatives, and lack of funds to purchase other alternatives are some of the major constraint bedevilling the use of non-solid energy sources. Level of education (χ2 = 6.584; p < 0.1) and average monthly income (χ2 = 8.277; p < 0.1) were significantly related to awareness of the environmental implication of the unsustainable use of biomass energy. It is therefore recommended that people should be enlightened on the environmental implications associated with the unsustainable use of biomass energy sources. Furthermore, policies favouring a switch of energy source should be considered.

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Emovwodo, Silas Oghenemaro. "The Role of Radio Programs in Agricultural Development Schemes in Osun State, Nigeria." Jurnal Spektrum Komunikasi 7, no. 2 (December 23, 2019): 1–14. http://dx.doi.org/10.37826/spektrum.v7i2.4.

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This research attempts to study the role of radio programming on agricultural development schemes in Osun State, Nigeria, with Osun State Broiler Outgrower Production Scheme (OBOPS) And Rural Enterprise and Agricultural Programme (O-REAP) as case study as well as radio’s involvement in agriculture, with a review of an indigenous agricultural program, Aroko Bodunde, broadcast on the Osun State Broadcasting Corporation, Orisun FM, 89.5, Ile-Ife, a community radio station. Powerful-Effect Model and Agenda Setting Theory served as the framework for this study while adopting the descriptive survey of research. Findings revealed that radio programming role in the development of agriculture cannot be overemphasized, as the messages conveyed via the radio wave has helped to increase awareness, inform, enlighten, educate as well as encourage and mobilize listeners to embrace agriculture. Furthermore, findings showed that Orisun FM, 89.5, had a positive influence on listeners which enhanced the development of OBOPS and O-REAP agricultural schemes. It was therefore recommended that governments at all levels in Nigeria should employ community radios in quickening the pace of agricultural development and schemes as radio has proven to be adequately appropriate in giving impetus for the development of all kinds at any level.

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Akinbolati, Akinsanmi, and Moses Oludare Ajewole. "EFFECT OF SOME RADIO CLIMATIC FACTORS ON DIGITAL TERRESTRIAL TELEVISION SIGNAL IN A SAHEL SAVANNAH CITY OF NIGERIA." FUDMA JOURNAL OF SCIENCES 4, no. 2 (July 2, 2020): 111–18. http://dx.doi.org/10.33003/fjs-2020-0402-150.

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This study investigates the effect of some radio climatic factors on the Received Signal Strength (RSS) of a Digital Terrestrial Television Broadcast Station (DTTBS) in Katsina City, Nigeria. The RSS was measured at intervals along selected routes around the station using a digital signal strength meter. GPS receiver was used to log the line of sight, geographic coordinates and heights of data points from the station. The atmospheric pressure, temperature and humidity corresponding to data points were concurrently measured using a compact weather station whereas the corresponding surface radio refractivity (Ns) values were computed. Data were collected during dry and wet season months’ in the year 2017. Results shown that, Ns is inversely proportional to RSS irrespective of routes and seasons with correlation coefficients of -0.51 and -0.57 during dry and wet season months respectively. Higher mean value of, 358.50 (N-units) was deduced during wet compared to the dry season months of 301.20 (N-units). Average atmospheric pressure of 951.92 and 949.61 (hPa) and as well as humidity values of 32.25 and 77.93 %RH were deduced during dry and wet season months’ respectively. Findings also show that pressure is inversely proportional to RSS. The overall effects of pressure, temperature and humidity on RSS is better understood using the effect of Ns since the latter is derived from those parameters. This study concludes that the specified radio climatic factors have attenuation effect on UHF signal and should be put into consideration when planning link’s design and power budgets on the UHF band.

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Ogundoyin, Olayinka Susan. "Journalism as a profession: the challenges of women in a discriminatory society." EJOTMAS: Ekpoma Journal of Theatre and Media Arts 7, no. 1-2 (April 15, 2020): 190–204. http://dx.doi.org/10.4314/ejotmas.v7i1-2.12.

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Journalism is one of many professions held in high esteem. The profession, however, is not without its own challenges as women journalists find it difficult to enjoy their career in the face of issues posed by the industry. This study sought to investigate the challenges faced by women journalists in the Nigerian mediascape. It is anchored on the feminist muted group theory (FMGT). The survey research and interview methods were employed to sample 120 women journalists in some Nigerian media outfits. They were purposively selected to respond to the questionnaire and four senior women journalists based on their work experience were interviewed. Four electronic media stations (two television and two radio stations) were considered for the study. Data were analysed through simple percentages and the qualitative data analysed thematically. It was found that women journalists face myriads of challenges, including abuse, sexual harassment and marital issues such as divorce, spending inadequate time with spouse, children and participating less in family functions. In addition, some women are restricted to anchoring less challenging programmes compared to their male counterparts in the industry. Hence, it was recommended that media stations should look beyond sexual stereotyping and assist women journalists to overcome the various challenges by giving them more time to spend with their families and by giving them challenging duties that can boost their selfconfidence and help them attain enviable heights in the profession. Keywords: Women journalists, Nigerian mediascape, Sexual stereotyping, FMGT, Challenges

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Ojuh, OD, and J. Isabona. "Radio Frequency EMF Exposure due to Gsm Mobile Phones Base Stations: Measurements and Analysis in Nigerian Environment." Nigerian Journal of Technology 34, no. 4 (September 27, 2015): 809. http://dx.doi.org/10.4314/njt.v34i4.20.

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Badiru, Idris Olabode, and Nsikakabasi Akpabio. "Farmers' Utilization of Utom Inwang Agricultural Broadcast on Atlantic FM 104.5 Radio Station, Akwa Ibom State, Nigeria." Journal of Agricultural & Food Information 19, no. 4 (January 10, 2018): 377–86. http://dx.doi.org/10.1080/10496505.2017.1401481.

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Yussuff, A. I. O. "Analysis of Selected Earth-Space Rain Attenuation Models for a Tropical Station." Indonesian Journal of Electrical Engineering and Computer Science 3, no. 2 (August 1, 2016): 383. http://dx.doi.org/10.11591/ijeecs.v3.i2.pp383-391.

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The restrained use of millimeter bands is due to severe rain attenuation. Attenuation is caused when rain cells intersects radio wave’s propagation path; resulting in deep fades. The effect of rainfall is more severe in tropical regions characterized by heavy rainfall intensity and large raindrops; hence, rain attenuation analyses are essential to study rain fade characteristics for use in earth-space link budget analysis, for outage prediction resulting from rain attenuation. Tropical regions are particularly challenged with signal outage, necessitating the formulation and development of suitable prediction model(s) for the region. Therefore, extensive knowledge of the propagation phenomena mitigating system availability and signal quality in these bands are required. Daily rainfall data were collected from the Nigerian Meteorological Services for Lagos for spanning January to December 2010. Results showed that although, the ITU-R model out-performed the other prediction models under consideration, none of prediction models matched the measurement data.

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P, Ogherohwo, E., Bukar, B, and Baba, D. D. "Effects of Rainfall Attenuation on Frequencies 1 and 3 GHZ in Nigeria." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 15, no. 5 (March 23, 2016): 6711–23. http://dx.doi.org/10.24297/ijct.v15i5.1628.

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Mobile communications are part of our everyday life. The non-ideal environment which is filled with many attenuation factors affects the electromagnetic waves, which radio communication depends. This study considers the spectral range of 1 and 3GHz. At these frequencies, interesting phenomena due to rain are supposed to happen. The study of this frequency spectrum has been undertaken in an attempt to evaluate the frequency dependence of rain effects on electromagnetic waves. The study of rain effects on communication presented in this study relied solely on rainfall data collected from Nigeria Metrological Agency (NiMet) station in Lagos, Nigeria. The months for January to December for 1981-2011 were summed together and the averages were determined. The average is then used to calculate the rain rate and rainfall attenuation using the extracted results for all the locations (Bauchi, Ikeja, Jos, Kebbi, Maiduguri and Warri). The results show that Warri has the highest rainfall rate followed by Lagos. Kebbi and Maiduguri has the least while Jos and Bauchi demonstrated moderate rainfall rates. This also deduced that attenuation has less impact on lower frequencies but increase with higher frequencies. The study reveals that at higher frequencies, the rainfall attenuation is observed to be greater.

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Adebiyi, Marion Olubunmi, Roseline Oluwaseun Ogundokun, Alabo Inatimi Nathus, and Emmanuel Abidemi Adeniyi. "Smart transit payment for university campus transportation using RFID card system." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 5 (October 1, 2021): 4353. http://dx.doi.org/10.11591/ijece.v11i5.pp4353-4360.

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In the transportation business, we aim to be cost-efficient and effective in our customer service but with the traditional transit payment system, it is not so. Lately, transit companies all over the world are moving towards superior client service, nimbleness, receptiveness to necessities that diverge at a time scale that was absurd even two decades ago. The aim of this study was to create an electronic transit payment system that will allow for full pliability and solutions functionality that Covenant Universities and Nigerian transit companies should adopt to become more effective and efficient. We achieved this with the use of radio frequency identification (RFID) smart cards and card readers aiding a computer program that was programmed using C#. In addition, the program was simple and not expensive to implement in order to eliminate the mismanagement of ticket funds, loiter paper in bus stations, and so on. Together all this became our payment system.

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Abdullahi, Jamilu. "Policy framework on social welfare information management and services for Nigerian public libraries." Library Management 36, no. 4/5 (June 8, 2015): 281–88. http://dx.doi.org/10.1108/lm-08-2014-0088.

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Purpose – Looking at the present Nigeria’s quest to become one of the top 20 economies of the world by the year 2020, the purpose of this paper is to propose that Nigerian public libraries, as key players in community development, should provide resources and services for the promotion of social welfare sector of the country by introducing relevant key information management and service policies. These strategic policies should include identification of various user groups, deployment of specialized information professionals, provision of adequate financial resources, social welfare information resource development planning, effective information service delivery system, partnership arrangements and adaptation of Information and Communication Technology (ICT). Design/methodology/approach – Essential to this paper is to take into account the importance and relevancy of policies, strategies and procedures of information management and services to Nigerian public libraries. Findings – There is continuous rising concerns about the current situation of the country’s socio-economic problems and challenges. However, despite the problem of poor and inadequate ICT facilities in Nigerian public libraries, the ICT infrastructure including the internet will significantly enhance the social welfare information service process in these libraries, if fully adopted. Also very important here is that, the libraries should support community awareness programs on local radio stations or local television channels to compliment the collection of materials in the library. Originality/value – Nigerian public libraries should be seen as places for all; and participants in community activities must therefore provide relevant data and information to social welfare workers for effective policy/decision making. It is also important that the libraries should help in the identification of areas of welfare that require urgent attention or thorough investigation, examination and analysis.

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Yussuff, Abayomi Isiaka, and Nor Hisham Haji Khamis. "Rain Attenuation Prediction Model for Lagos at Millimeter Wave Bands." Journal of Atmospheric and Oceanic Technology 31, no. 3 (March 1, 2014): 639–46. http://dx.doi.org/10.1175/jtech-d-13-00024.1.

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Abstract Lagos, Nigeria (6.35°N, 3.2°E), is a coastal station in the rain forest area of southwestern Nigeria with an altitude of 38 m. Since most communication now takes place above the X band because of congestion of lower bands, it was necessary to look into ways of maximizing X-band usage. There are inadequate data for use in rain propagation studies at microwave frequencies, and even less so at millimeter wave bands where most of the signal depolarization and fading has been discovered to exist. The proposed model is a modification of the International Telecommunication Union–Radio Communication Sector (ITU-R) model combined with locally obtained regression coefficients for estimating specific attenuation as proposed by G. Olalere Ajayi. The Dissanayake, Allnutt, and Haidara (DAH), Simple Attenuation Model (SAM), and ITU-R attenuation prediction models were investigated along with the proposed model. The ITU-R model was observed to produce the best results at 40 GHz, with percentage error values of 0.61%, 0.55%, and 0.49% at 0.1%, 0.01%, and 0.001% of the time, respectively. In comparison, the proposed prediction model showed good performance at 20-GHz down-link frequency, with percentage error values of 3.6%, 3.3%, and 2.9% at 0.1%, 0.01%, and 0.001% of the time, respectively. The obtained results also showed good agreement with other similar works in the open literature. The results presented in this work are valuable for the design and planning of a satellite link in the tropical regions.

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Ashigwuike, Evans Chinemezu, Ale Felix, and Farouq Eneuma Shaibu. "The Impact of Soil Texture on Path Loss Modelling of an FM Signal Using Diffraction Technique." European Journal of Engineering Research and Science 4, no. 4 (April 11, 2019): 56–63. http://dx.doi.org/10.24018/ejers.2019.4.4.1231.

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A novel solution to predict path loss of an FM signal using diffraction technique is proposed. Diffraction technique and soil texture impact are used to improve the Friis free-space model to predict the received signal strength and propagation path loss of an FM signal between a transmitter site and receiver site, while studying the impact of soil texture to the FM signal in the case of surface wave propagation. Measurement of signal strengths with an interval of 5KM along two different routes (1 and 2) were taken with a Digital Field Strength Meter (DW-400), in some selected open/rural environments of Kogi State. A solid-state transmitter (BE 20S), with broadcast frequency of 101.5MHz at antenna height of 120m was considered as the transmitting point source. Bluetooth signal strength meter software was used to visualize this impact of soil texture, where different types of soil were considered within the coverage area of the FM radio station, with the application of a Wireless Personal Area Network (WPAN) technology. Measurements taken along the two different routes were compared against predictions made by the modified model of Friis Free Space. The model showed quite large mean path loss prediction errors, and places with poor signal strength for Prime FM Radio Nigeria were revealed. The result shows that an FM signal induces current in the ground over which it passes and it is attenuated as a result of absorption of energy by the soil, depending on the soil type.

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Ashidi, Ayodeji Gabriel, Joseph Sunday Ojo, Oluwaseyi Julius Ajayi, and Toluwalope Mary Akinmoladun. "Evaluation of Concurrent Variation in Rain Specific Attenuation and Tropospheric Amplitude Scintillation Over Akure, Southwest Nigeria." Earth Systems and Environment 5, no. 3 (June 8, 2021): 547–59. http://dx.doi.org/10.1007/s41748-021-00225-6.

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AbstractRain constitutes a major limitation to the performance and use of terrestrial and satellite communication systems with operational frequencies greater than 10 GHz. The situation gets further complicated by fast fluctuations in the received signal amplitude due to in homogeneities in atmospheric weather conditions; a phenomenon known as amplitude scintillation. The concurrent evaluation of the two phenomena guarantees a better fade margin determination for the planning of radio communication over any location. This work employs 3 years of in-situ measurement of temperature, humidity, rainfall rate and rainfall amount for the estimation of tropospheric amplitude scintillation and rain specific attenuation over Akure (7.17° N, 5.18° E, 358 m) South West Nigeria. Davis vantage pro weather station at 1-min integration time was used for the measurement and the ITU models for rain specific attenuation (ITU-R P.838-3) and amplitude scintillation (ITU–R 618-13) were employed for the estimation. Time series and statistical analyses of the phenomena show that rain attenuation is the more prominent cause of signal degradation at Ku-band frequencies. Nevertheless, the need to make an extra fade margin allowance of about 0.25 dB due to amplitude scintillation fade subsists to forestall any loss of synchronization on the link. Also, a 3-parameter power-law expression developed for estimating amplitude scintillation fade from rain attenuation performed excellently well, as indicated by average root mean square error (RMSE) and coefficient of determination (R2) values of 0.002151 and 0.8747, respectively.

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Adeyemi, B. "Tropospheric radio refractivity over three radiosonde stations in Nigeria." Ife Journal of Science 6, no. 2 (February 4, 2005). http://dx.doi.org/10.4314/ijs.v6i2.32144.

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Ajileye, O. O., O. S. Popoola, F. F. Kayode, and A. B. Rabiu. "Meteorological Models for Determination of Surface Radio Refractivity over Nigeria." Current Journal of Applied Science and Technology, July 12, 2019, 1–15. http://dx.doi.org/10.9734/cjast/2019/v36i330235.

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Previous studies showed that linear meteorological expressions obtained were localized and could not be generally applied. It is therefore required that more locations should be investigated to deduce new linear meteorological models best suitable for estimation of surface refractivity. Surface meteorological data, including pressure, temperature and relative humidity, was downloaded from Modern-Era Retrospective analysis for Research and Application (MERRA - 2) for six locations defined by different climatic conditions over Nigeria, namely Yenagoa, Abakaliki, Ibadan, Anyigba, Jalingo and Sokoto for a period of 40 years partitioned into two periods of 20 years each. The 1979 – 1998 dataset of atmospheric temperature, T (K), atmospheric pressure, P (hPa) and relative humidity, Rh (%) were extracted using text import wizard to calculate surface refractivity using existing model (Nitu-r). Regression analysis was carried out to obtain new linear meteorological expressions as function of temperature (Nt), relative humidity (Nrh), and combination of relative humidity and temperature (Nrh,t). The new expressions were tested using 1999 – 2018 meteorological dataset and the results of surface refractivity from the new linear expressions were compared with values from existing equations. It was observed that high relative humidity and low temperature values prevalent in the three southern stations – Yenagoa, Abakaliki and Ibadan – significantly enhanced the suitability of Nrh,t linear meteorological model for estimation of surface refractivity values comparable toNitu-r. Contrary to the observations in the southern stations, in the northern stations, relative humidity contributions (Nrh) had the best linear correlation of 0.96 at Anyigba, 0.98 at Jalingo and Sokoto. Estimation of surface refractivity from the new linear meteorological models was found to be best as a function of temperature and relative humidity in the south and a function of relative humidity in the north. Linear meteorological models as a function of relative humidity and temperature were best suitable for stations in the south with minimum correlation of 0.98 while linear expressions as a function of relative humidity only were best suitable for the stations in the north with minimum correlation of 0.96.

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Kareem, A. I., K. F. Olaseinde, and K. A. Aminu. "Effect of Primary Radio Climatic Variables on Tropospheric Surface Radio Refractivity Over 3 Stations in Nigeria." Physical Science International Journal, October 19, 2019, 1–10. http://dx.doi.org/10.9734/psij/2019/v23i430159.

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This study investigates the effect of primary radio climatic variables on the tropospheric surface radio refractivity across three stations (Makurdi (7.7322° N, 8.5391° E), Jos (9.8965° N, 8.8583° E) and Lagos (6.5244° N, 3.3792° E) in Nigeria. Two years (January 2008-December 2009) primary radio climatic variables data (temperature, pressure and relative humidity) obtained from the archive of the Tropospheric Data Acquisition Network (TRODAN) of the Centre for Atmospheric Research (CAR), which is an activity centre of the Nigeria National Space Research and Development Agency (NASDRA) was used for this study. The measurement was made at 30 minutes interval for a complete 24 hours cycle. The results obtained establish the variation of temperature and relative humidity to refractivity across the region.

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Adeniji, M. A., and D. O. Olorode. "Protection Value of Tropospheric Radio Refractivity over Nigerian Atmosphere." Physical Science International Journal, October 23, 2020, 38–43. http://dx.doi.org/10.9734/psij/2020/v24i830208.

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This study enumerates the protection values derivable from refractivity variation of the tropospheric surface in Nigeria. The investigation was conducted in four cities of Nigeria using meteorological data of 2008 procured from the centre for basic space science (cbss), university of Nigeria, (unn), Nsukka. Data were captured from four different stations: Akure, Nsukka, Minna and Sokoto using vantage pro II automatic weather station. Data measurement at half hourly interval for the whole year took place at the ground level, 0 m and 100 m altitude of the troposphere. The results of the analyzed data revealed that at 100 m altitude, Nzukka and Akure experienced better protection at refractivity value of 350 unit than Sokoto and Minna at 250 unit. At the ground level (0) m, refractivity values becomes more distinct with; Nzukka, 500 unit, Akure, 370 unit while Minna and Sokoto shared the same refractivity value of 270 unit. This trend of refractivity variation showed a decreasing order of protection against exposure to damaging effects of the cosmic and out of space radiation as we move from the south towards the northern part of the country.

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Aminu, Ibrahim, J. T. Zhimwang, D. Adewumi, R. S. Ibrahim, M. Z. Musa, and D. D. Matthew. "Measurement and Evaluation of Radiation Power Density Emitted from Mobile Cellular Base Stations in Abuja and its Environ, Nigeria." Asian Journal of Research and Reviews in Physics, January 21, 2021, 7–13. http://dx.doi.org/10.9734/ajr2p/2021/v4i130132.

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This paper presents measurement and evaluation of radiation power density emitted from mobile cellular base stations in Abuja and it’s environ. Forty (40) mobile base stations with ten (10) each from AIRTEL, ETISALAT, GLO and MTN located in areas with high population were randomly examined across Abuja. Broadband analysis method was employed in the measurement of the radiation power density. The results obtained shows that most of the base stations recorded lower radiation power density below the safety standard value of 4.5watt/m2 , 22.5 watt/m2 for 900MHz frequency though few base stations recorded above standard value: GLO-BS02, GLO-BS03 and MTN-BS02 recorded 59.02 mW/m2, 39.76 mW/m2 and 46.70 mW/m2 respectively. The result also revealed that as distance increases, the mean power density reduces. This is to said that human exposure to radio frequency radiation have less or no health hazard at distance far away from the mobile cellular base station.

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Ibrahim, Umaru, Musa Mohammed, Idris Mohammed Mustapha, Abdullahi Abubakar Mundi, and Idris Yahaya. "Investigation of Radio-frequency Power Density Distribution around GSM Mast in Keffi Town, Nigeria." Asian Journal of Research and Reviews in Physics, March 15, 2019, 1–6. http://dx.doi.org/10.9734/ajr2p/2019/v2i230094.

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In this study, an investigation of radiofrequency power density distribution around GSM mast in Keffi town, Nigeria was determined. Radiofrequency meter (Electrosmog ED- 155A) was used to measure the EM radiation at 50, 70, 90,110, 130, 150, 170, and 190 m away from mobile base stations. A total of fifteen mobile base stations were randomly selected in Keffi town covering about four network providers (MTN, Globacom, Etisalat, and Airtel), according to their proximity to buildings, number of antennas mounted on their masts, how close they are to other base stations and the population density around them.The result reveal that MBS5 was found to have the highest value of average power density compared to that of the remainder, with a contribution of about 16% (2908.38 µW/m2). The least contribution was recorded in MBS3 with only about 1% (173.71 μW/m2). The other MBS with significant contribution are MBS6 (15%), MBS11 (15%), MBS10 (13%), MBS8 (13%) and MBS13 (11%) with average power densities of 2878.72μW/m2, 2767.28μW/m2, 2385.43 μW/m2, 2382.70 μW/m2, and 1996.36 μW/m2 respectively. The findings reveal that the measured values of power densities across all the sites are well below the RF radiation exposure safety limit set by International Commission on Non-ionizing Radiation Protection (ICNIRP) when compared with the findings in this study. Therefore, RF radiation exposure from mobile base stations in Keffi town may pose no health risk to the people living within the area.

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Elechi, Promise, Sunny Orike, and Promise Agugharam. "Analysis and Evaluation of Specific Absorption Rate of GSM Signal in Port Harcourt, Nigeria." Journal of Engineering Research and Reports, June 21, 2019, 1–10. http://dx.doi.org/10.9734/jerr/2019/v5i416934.

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There is a growing concern in the world that residents close to GSM base station facilities are exposed to electromagnetic radiation which causes different health illness like cancer, leukemia, memory lost, dizziness, fatigue, etc. This study puts to rest the position on the effect of radiofrequency (RF) radiation from GSM masts on human health. In this research work, the evaluation and assessment of radio frequency radiation in five selected mobile base stations facilities in Obio/Akpor Local Government of Rivers State, Nigeria were carried out using an EMF meter for measurement of Electric field. The measurements of the radio frequency radiation with the EMF meter was conducted from 0 – 300m away from the selected base transceivers stations facilities of the selected telecommunication operators (MTN, Globacom and Airtel) in Nigeria. The data obtained from the research were analyzed using Specific Absorption Rate formula to establish whether with time exposure to RF radiation will have negative impact on human health. The normal specific absorption rate (SAR) and the Power Density for the general public whole body was assessed from the measured electric field strength and the results were compared with that of International Commission on Non Ionization Radiation Protection (ICNIRP).The results showed that the average amount of SAR for the selected five base transceiver station (BTS) facilities were within the range of 0.0037 W/kg – 0.0084 W/kg and the power density 1.5183 W/m2 – 9.5083 W/m2. These values are lower than the recommended limit by ICNIRP which is 0.08w/kg for the human body. This study has shown that there is inconsequential effect on human health because the non-ionizing electromagnetic energy has no sufficient energy to affect any part of human body for the residents living close to the selected BTS facilities of the various telecommunication providers.

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Adewale, Opeyemi Akinleye. "Deconstructing the Menace: Use of Fake Accent on Private Radio Stations in Nigeria." International Journal of Humanities & Social Studies 7, no. 10 (October 31, 2019). http://dx.doi.org/10.24940/theijhss/2019/v7/i10/hs1910-010.

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Journal articles on the topic 'Radio stations – Nigeria'

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