A Comparative Study of Students Performance in Object Oriented Programming (OOP) Using Java Before and During COVID-19 (A Case of Kapasa Makasa Campus)
Kashale Chimanga,
Nimrod Siluyele,
Shumba Langton,
Edward Nkonde
Issue:
Volume 10, Issue 1, June 2021
Pages:
1-5
Received:
15 January 2021
Accepted:
23 February 2021
Published:
8 May 2021
Abstract: The purpose of this study was to compare the performance of students in Object Oriented Programming using Java before and during COVID-19 pandemic, to this effect a total of 66 students were selected to take part in the study and their results compared. The results revealed that the performance of students in OOP Java before COVID-19 pandemic outbreak were better than during the pandemic. The reasons for this was that, before the outbreak, the students were taught in physical class and were able to use the university facilities such as Internet and Computer laboratory for their practice. On the other hand, during the COVID-19 pandemic, students were subjected to virtual learning which proved to be a challenge to most of them, especially those in rural areas with no access to the Internet and electricity but affordability of the data bundles too. The study also established that gender had no effect on students’ performance in OOP in Java regardless of the mode conclusion provided; the study recommended that deliberate measures should be put in place to encourage online learning in order to motivate learners in embracing technology in learning, more especially during this second wave of the COVID-19 pandemic. This will ensure continuity in learning without any major changes to the learning ability. In addition, more strategic interventions and pedagogies to teach practical courses such as programming online should be derived and used for teaching and learning so that students take advantage of both modes of studies (online and face to face).
Abstract: The purpose of this study was to compare the performance of students in Object Oriented Programming using Java before and during COVID-19 pandemic, to this effect a total of 66 students were selected to take part in the study and their results compared. The results revealed that the performance of students in OOP Java before COVID-19 pandemic outbr...
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An Optimized Routing OLSR Protocol with Low Control Overhead for UAV Ad Hoc Networks
Qizheng Zhu,
Zhou Zhou,
Jie Yang,
Zeliang Fu
Issue:
Volume 10, Issue 1, June 2021
Pages:
6-12
Received:
19 April 2021
Published:
24 May 2021
Abstract: OLSR (Optimized Link State Routing) protocol is a priori Routing protocol applied in MANET network. All nodes in the network have Routing information to other nodes locally and need to send a large number of control messages to maintain the topology information of the whole network. In UAV application scenarios, with the increase of node density, the control overhead will be too high and the problems of hidden terminals will be intensified. Secondly, due to the fast moving speed of UAVs, when the neighboring UAVs have moved out of the communication range of the local node, the local node still retains the routing information of the neighbor node, leading to the problem of packet loss when the link information is updated behind time. Aiming at the above problems, an OLSR protocol with low control overhead and optimal routing is proposed. The protocol uses the incremental HELLO message mechanism to ensure that only incremental information is exchanged when the network topology changes slowly, and the control overhead is greatly reduced. When calculating routing, in the range of n hops, the more stable link is selected under the same number of hops. Simulation results show that the proposed algorithm can significantly improve the success rate of packet transmission and end-to-end delay, and reduce the system control overhead.
Abstract: OLSR (Optimized Link State Routing) protocol is a priori Routing protocol applied in MANET network. All nodes in the network have Routing information to other nodes locally and need to send a large number of control messages to maintain the topology information of the whole network. In UAV application scenarios, with the increase of node density, t...
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