An Analysis of the Challenges and Benefits of Digital Migration in Zambia
Kashale Chimanga,
Phillimon Mumba
Issue:
Volume 9, Issue 2, December 2020
Pages:
17-21
Received:
3 July 2020
Accepted:
27 July 2020
Published:
11 December 2020
Abstract: Digitization is the current trend in Television broadcasting, both in Zambia and the world over. The International Telecommunication Union (ITU), set 2015 as the year for the entire broadcasting stations in the world to go digital in order to have better signal quality and increase in the capacity of broadcast transmission networks by improving spectrum efficiency. Despite these and many other advantages that come with digital migration, Zambia is yet to realize the full benefits of digital migration implementation. It’s against this background that the study was conducted to assess the challenges of digital migration process and its benefits in Zambia. The emphasis was on assessing the television digital migration implementation process; examine the challenges of switching from analogue to digital technology and its benefits. To this effect, a quantitative research design was used on a sample of 300 stakeholders who had direct influence on the process to determine their views. The data collected was analysed using Statistical Package for Social Sciences (SPSS) to categorise the challenges of the migration process and its benefits. The results established that lack of awareness by the public was a major challenge was encountered. In addition, inadequate infrastructure for digital migration coupled with inadequate funding towards the hindered the process of migration. However, the study also established that the country has benefited from migrating from analog to digital broadcasting. Notable ones include; quality of transmission, improved content delivery, and ability of the viewers to view more than one TV channel at once thereby giving them a better viewing pleasure among other benefits. In view of the challenges and benefits of the digital migration to the country, the study recommends that deliberate policies should be put in place to ensure that the infrastructure needed for the digital migration are readily available and that Government should create public awareness with regards to the importance of the digital migration process to allow for more public participation.
Abstract: Digitization is the current trend in Television broadcasting, both in Zambia and the world over. The International Telecommunication Union (ITU), set 2015 as the year for the entire broadcasting stations in the world to go digital in order to have better signal quality and increase in the capacity of broadcast transmission networks by improving spe...
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Overcoming University Students’ Alternative Conceptions in Newtonian Mechanics
Ahcene Serhane,
Mahdi Debieche,
Boudhar Karima,
Abdelhamid Zeghdaoui
Issue:
Volume 9, Issue 2, December 2020
Pages:
22-29
Received:
28 July 2020
Accepted:
19 October 2020
Published:
22 December 2020
Abstract: Students’ alternative frameworks and prior conceptions about interactions forces «traditionally, known as Newton's third law» have been largely investigated. The various investigations clearly show that students very often fail to apply Newton’s laws of motion in general to everyday situations and third law in particular. This study highlights some of the serious difficulties students undergo with reciprocal interactions and circular motions, taking advantage of previous studies and/or surveys we managed to reveal and identify a wide range of misconceptions among students, enabling teachers to set appropriate strategies to overcome them. Closely related to students’ misconceptions in Newton’s law of motion, there are still serious difficulties facing students to differentiate between real and fictitious forces, especially when tackling dynamics problems involving circular motion. An approach to teaching mutual interactions and the meaning of centripetal force is suggested that focuses on reconsidering and/or refining students' intuitive thinking on the nature of mutual interactions. However, the essence of this argument is that the teaching of science is not a process by which the wrong ideas are substituted by the correct ones; but students should know where they went wrong and why.
Abstract: Students’ alternative frameworks and prior conceptions about interactions forces «traditionally, known as Newton's third law» have been largely investigated. The various investigations clearly show that students very often fail to apply Newton’s laws of motion in general to everyday situations and third law in particular. This study highlights some...
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