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Challenges and perceptions in the use of ICT in student assessments during the Covid-19 Pandemic
(University of Zululand, 2021-12-10) AJAGBE Sunday Adeola; ADESINA Ademola O.; ILUPEJU Oluwafisayomi A.; THANH Le Thi; THANH Dang N. H.
As part of the government's reaction to the covid-19 pandemic, educational institutions were suddenly closed to prevent the virus from spreading further. This has raised concerns about the global consequences of disrupted academic sessions. To ensure educational continuity, ICT (e-learning) has been implemented in universities all over the world. It is common knowledge that electronic learning eventually leads to electronic testing. E-examinations aim to remove limitations and provide answers to several questions that arise during pen- on-paper examinations. As a result, higher education
institutions around the world should accept it. This study looked at how students and lecturers perceived the use of electronic examinations in universities during the pandemic. The data was collected using a descriptive survey research methodology and a structured questionnaire as the data collection instrument. Most
respondents appeared to be familiar with ICT, According to the study’s findings. Furthermore, most of the respondents tended
to have favorable perception of e-examination as a platform for academic assessments in universities, according to the results. On the negative hand, poor internet access, unreliable power supply, unsupported educational policies, fear of examination malpractices, and insufficient technical infrastructure to support e-examination are all major obstacles.
Applicability of Archetypes and the Folkloric Panacea on Societal Ills and Degradation of Morality
(International Conference on Humanities, Literature and Management, 2015-01-10) Okeowo, Adegoke; Okeowo, Abigail Olufunmilayo
Technological advancement in this contemporary age
has, obviously, turned the world into a global village. The art of
news gathering and dissemination has become phenomenal. All one
needs do is punch the right buttons on the computer or mobile phone
and the world is, as it were, at your feet! This has brought to fore an
endless stream of disturbing news of chaos, violence, brutality and
absurdity across the nations of the world – all of which are,
surreptitiously, pushing the human society towards the precipice of
self-annihilation. Over the ages value system in most societies seem
to be changing at an amazing rapidity, resulting in a gradual but
alarming erosion of societal morality. In this respect therefore
sociologists, social crusaders, educational psychologists, guidance
counselors, opinion leaders, and significant others must put hands on
deck to arrest a worsening scenario. The foregoing background
forms the premise of this paper which seeks to examine the nature of
archetypes as embedded in African folklore in particular, and as
obtained in cultures of the world in general. The paper submits that,
by reason of its universality, archetypes can be employed through the
use of folklore (which is essentially didactic) to bring about a
reawakening of sensibilities, self-awareness and re-embrace of all
that is noble, virtuous and humanistic, towards the much needed
sanitization of our society in these unsettling times
Hybridization of zero forcing-minimum mean square error equalizer in multiple-input multiple-output system
(Indonesian Journal of Electrical Engineering and Computer Science, 2022-05-01) Damilare, Akande; Adeyemo, Zachaeus; Arowolo, Olakunle; Oseni, Olasunkanmi
Transmission of high data rate over multipath environment is associated with many wireless applications. However, this transmission results in high delay which leads to inter-symbol interference (ISI) distortion and causes high error. The existing linear equalizer (LE) in multiple-input multiple-output (MIMO) systems such as zero forcing (ZF) equalizer used in addressing this problem reduces the ISI distortion completely but results in noise amplification. Likewise, minimum mean square error (MMSE) equalizer only reduces the noise but cannot eliminate ISI. Therefore, this paper proposed a hybrid LE for wireless fidelity (Wi-Fi) over Weibull fading channel. The hybridized ZF-MMSE equalizer was developed using conventional ZF and MMSE equalizers. Digital transmitted signal propagated over Weibull fading channel is received at the receiver through multiple antennas and then combined using maximal-ratio combining (MRC). The combined signal is then equalized using hybrid ZF-MMSE to eliminate both the ISI and the amplified noise. The developed model was simulated in MATLAB software environment and evaluation was performed using bit error rate (BER) and pout. The results obtained revealed that the hybrid ZF-MMSE equalizer gave better performance over existing equalizers in a MIMO system. Therefore, the proposed equalizer will help improve the performance of the Wi-Fi technology.
Airborne System for Pipeline Surveillance Using an Unmanned Aerial Vehicle
(European Journal of Engineering Research and Science, 2020-02-01) Olatunbosun, Adeboye; Benyeogor, Mbadiwe; Kumar, Sushant
Our work involves the development of a quadcopter Unmanned Aerial Vehicle (UAV) system with remote sensors onboard for monitoring oil and gas pipelines. Two Liquefied Petroleum Gas (LPG) sensors were used for LPG gas leakage detection. The Multiwii software is used to control, track and simulate the 3D motion of the UAV in flight. Using this device, experimental data from field tests were analyzed with MATLAB. Results reveal that the developed system has performed as expected. Thus, our device can be used to enhance asset monitoring and operational safety in the oil industry.
Automatic Controller for Teleoperated Switching between Multiple Energy Sources in a Residential Building Nanogrid
(www.iiste.org, 2020-09-30) Olatunbosun, Adeboye; Olufajo, Oludolapo O.
Erratic power supply from the utility grid has grave effect of the development of several countries. In a bid to
overcome this challenge, many residential buildings have become electrically self-sustaining by the integration of
various backup power supply source. Yet the act of transition from one source to another has remained a manual
task that tends to discourage users from going through the rigour. Internal combustion engine AC generators and
batteries have been found to be the most common backup options. An automatic transition system that gives user
the flexibility of monitoring and controlling resources remotely from a mobile phone application is thus presented
in this paper. The microcontroller-based system monitors the status of the energy resources and protects the
building against undervoltage or overvoltage conditions. Based on the state of charge of the battery and the fuel
level in the generator, the system activates the appropriate alternative backup source in the event of an outage form
the grid supply. This system affords users a new level of comfort and reliability of power supply, as in the automatic
mode, the users are guaranteed power supply with minimal downtime, except when all resources are unavailable.