Use Of Modern Electronic Devices Research Articles

Conducted electromagnetic emissions of compact fluorescent lamps and electronic ballast modeling

<abstract> <p>The higher frequency electromagnetic (EM) emission in low voltage power systems is rising continuously due to the increasing use of modern electronic devices. The electronic ballast of a compact fluorescent lamp (CFL) is one of the sources of conducted EM emission in the power system. Conducted EM emission measurements are performed on compact fluorescent lamps (CFL) in the range of 2–150 kHz and compared with simulation results. The LTSpice simulation of typical 11W compact fluorescent lamps is used to analyze the measured values. Comparisons are made in both the time and frequency domains. The EMI filter in the ballast circuit can reduce the level of high-frequency EM emission. However, in order to get a more accurate result, it is necessary to find out the main cause of conducted EM emission in the ballast circuit, as the HF distortion spreads through the LV network in current signal between electronic devices.</p> </abstract>

The Biocompatibility of Wireless Power Charging System on Human Neural Cells

The progress in technology and science leads to the invention and use of many electrical devices in the daily lives of humans. In addition to that, people have been easily exposed to increased newly generated artificial electromagnetic waves. Exponential use of modern electronic devices has automatically led to increase in electromagnetic wave exposure. Therefore, we constructed the prototype of wireless power charging system to study the biocompatibility of electromagnetic field (EMF) generated by this system on various human cell lines. There are many studies indicating the negative bio-effect of EMF on various types of cells, such as induction of apoptosis. From the other point of view, these effects could rather be beneficial in the way, that they could eliminate the progress of various diseases or disorders. For that reason, we compared the impact of EMF (87 kHz, 0.3–1.2 mT, 30 min) on human normal as well as cancer cell lines based on morphological and cellular level. Our results suggested that EMF generated by wireless power charging systems does not have any detrimental effect on cell morphology, viability and cytoskeletal structures of human neural cells.

Facilitating Physics Classroom Instruction Through the Use of Modern Electronic Device

The use of modern electronic devices (MED) in teaching and learning in classrooms has become imperative especially at this period of Covid-19 pandemic. This necessitated this paper which is to show the uses of Modern Electronic Device (MED) as an educational tool for impacting and prospecting in Physics Education and to highlight a few devices that can be used in the areas of Reading and Writing. Through the use of low-tech and high-tech devices, MED will be able to help students become better readers and writers. In the area of Reading, the use of MED will help students improve upon and build on their spelling abilities, and also better students’ decoding, listening, and oral skills. In the area of Writing, the use of MED will enable students to write neatly and legibly, to form letters correctly, and to write sentences that are grammatically correct. Electronic-learning tools such as internet, computers, e-mail facilities, multimedia, scanner, printer, VCD player and digital camera were discussed. The prospects of electronic learning in secondary schools were identified. The paper conclude that if teachers plan carefully and use modern electronic devices to enhance instruction throughout the school curriculum, Basic Science, reading and writing will not be the only subjects that students will benefit. It was suggested among other things that, the government should embark on computer training program for teachers. Teachers should be trained and retrained through in-service training, seminars, workshops and conferences for acquisition of the knowledge and skills needed for e-learning application in secondary schools in Nigeria. It was suggested that teachers need also to explore other avenues in their instructional curriculum where they can enhance learning through the use of MED.

Virtual global project management in eighteenth-century astronomy

PurposeThis paper aims to demonstrate that virtual project management can be based on a common spirit and mutual trust to achieve project objectives, rather than the use of modern electronic devices to lower communication costs.Design/methodology/approachEvidence from the eighteenth-century files of Academies of Science and from astronomical literature is used to characterize the projects and to show how major elements of project management (such as identification of benefits to stakeholders, management of uncertainties, communication and data aggregation across related projects) were applied.FindingsThe analysis shows how the initiative to better measure the Astronomical Unit defined a megaproject, and how this was broken down at local Academies of Science into major projects or programs. This, in turn, resulted in individual expeditions. It demonstrates that innovations arose from the projects, and that learning from earlier expeditions resulted in the final success of the megaproject.Research limitations/implicationsThe literature used was not written to demonstrate project management. In this respect, both the original sources and the later reports may lack information with respect to the present topic. Today’s project management might learn from the study that coordination and communication can greatly benefit from a joint vision of the project if based on a common spirit and mutual trust.Practical implicationsPresent day project management might benefit from the finding that common values reduce communication costs in a similar way as recent electronic communication devices.Originality/valueThe author believes that this is the first paper to analyze the Venus transit projects from the project management perspective. This was a complex and global megaproject. The approaches taken to achieve the objectives relevant to different stakeholders provide lessons for today’s management of megaprojects.

Cyberbullying, cyber aggression, and cyber victimization in relation to adolescents' dating and sexual behavior: An evolutionary perspective.

This study examined adolescents' cyberbullying, cyber aggression, and cyber victimization from an evolutionary perspective, extending previous research showing that traditional forms of bullying, aggression, and victimization are associated with reproductively relevant outcomes. Consistent with hypotheses based on theory and research linking bullying and aggression to intrasexual competition for mates, results indicated that cyber victimization was positively associated with a number of dating and sexual partners. Findings for cyber aggression were more complex, depending on the degree of cyber victimization experienced by the perpetrator, and the balance of power between the perpetrator and victim. Specifically, nonbullying cyber aggression by perpetrators with equal or less power than the victim had stronger positive relations with the number of dating or sexual partners when perpetrators experienced a high level of cyber victimhood. In contrast, cyberbullying by perpetrators with more power than the victim was negatively associated with the number of dating partners when the perpetrators' exposure to cyber victimization was low. Although cyber aggression and cyber victimization are new forms of aggression that involve the use of modern electronic devices, the results of this study demonstrate the usefulness of viewing this behavior from an evolutionary perspective and show that adolescents are likely to use cyber aggression against rivals in the context of intrasexual competition for mates.

Capillary Pumped Loop as a Tool for Collecting Large Heat Fluxes from Electronic Devices On Warships

Abstract The combat potential of future warships will be directly related to the use of modern electronic devices being parts of advanced systems, such as, for instance, radar systems, fire aiming systems, fire detection systems, electric drive systems, and even electronic and radio-electronic weaponry, railguns and lasers, installed on these warships. The capacity and functionality of these devices is continually increasing, at decreasing mass and dimensions, which results in higher power consumption. Heat collection becomes a growing problem in operation of these devices. The paper presents a concept of the use of the CPL (Capillary Pumped Loop) cycle for passive heat collection from precise electronic devices used on warships. It also includes the description of the experimental rig and discussion of the results of laboratory tests performed on this rig and confirmed using the mathematical model developed by the authors.

Electronics — A New Multidisciplinary Open Access Journal

The proliferation of electronic devices has profoundly affected all aspects of modern life. Large populations of people worldwide are now acclimated to the use of modern electronic devices on a daily basis. Giant industrial corporations, commercial companies and small businesses all use a variety of computing, communications and electronic devices to increase their productivity, enhance market research and improve customer support and satisfaction. [...]

Information Communication Technology (ICT) and Documentation in Tertiary Institutions

This paper assessed the issues and relevance of electronic devices to the administration and control of tertiary institutions information details. The use of modern electronic devices, with particular attention to the computers which was explored to ascertain the extent documentation enhances organizational effectiveness. Nigeria with its teeming population of about 140 million needs to meet up with the real of the world in the face of ICT revolution. Information and documentation processes are most imperative now that technology has advanced to such a level that impact heavily on competitivebusiness and administration. The paper takes its conceptual framework from structural principles of the Max Webber’s classical bureaucratization of organizations which proposed the entrenchment of downward-upward flow of communication with copious documentation. It therefore outlined the role of ICT in the documentation of day-to-day as well as future educational operations in a tertiary setting. Observablechallenges to tertiary institutions in Nigeria include that most of their facing a lot of managerial crisis due absence and, or inadequacy of ICT tools; knowledge and complexities. The paper therefore proffered possible solutions to the way forward.

Radioactive resistance of elements for over-voltage protection of low-voltage systems

Aim of this work is to examine the over-voltage protection under the ionizing radiation influence. The use of modern electronic devices (nuclear, military and space technology) in the conditions of ionizing radiation brings up the question of radioactive resistance of electronic components and over-voltage protection components. The question of reliability of these components under the influence of ionizing radiation is also a relevant one. The entire effects of radiation, which cause the irreversible changes of the material characteristics, are defined as the dosage or integral effects. The resistance of the over-voltage material (the Transient Suppresser Diodes (TSD), Metaloxide Varistors, Gas Filled Surge Arresters (GFSA) and Polycarbon Capacitors) subjected to influence of n +γ radiation caused by californium source was examined in order to determine the radiation effects. It was determined that TSD are highly sensitive to the radiation. The radiation effects on Metaloxide Varistors are similar to the effects on the TSD. GFSA showed the temporary characteristics improvement. It was determined that the Polycarbon Capacitor capacity decreases under the influence of radiation. The obtained results are explained theoretically.

Medical and biological applications of electrical engineering

With the use of modern electronic devices, the heart beats or brain waves of a patient can be recorded during his normal daily activities, which is a great advantage in diagnosing disease. This is the last article written by the late Prof. R. Woolmer.