scholarly journals Examining the students’ understanding level towards the concepts of magnetic field: the case of conducting wire

2019 ◽  
Vol 6 (2) ◽  
pp. 40-46
Author(s):  
Ozgur Ozcan
Keyword(s):  
Magnetic Field ◽  
Charged Particles ◽  
Alternative Conceptions ◽  
Physics Teachers ◽  
Content Analysis Method ◽  
Wide Range ◽  
Conducting Wire ◽  
The University ◽  
Electrically Charged

The electromagnetism is one of the important topics in physics and it has quite a lot of applications in a wide range of area. It also examines the electromagnetic force researches that occur between the electrically charged particles. On the other hand, examination of the magnetic field around the conductors and the movement of the charged particles in the electromagnetic field is quite interesting topics on that the physics researchers intensively investigated. The electromagnetic theory has an abstract nature, because the university level students have many learning and understanding difficulties about the concepts related to these topics. In realization of meaningful learning, the role of the students’ prior knowledge about the aforementioned concepts is becoming important. This study aims to investigate the understanding of 12 pre-service physics teachers related to the concept of moving particles in an electromagnetic filed by using the qualitative research methods. The data collected through the test consisting of three question and it was analysed by using content analysis method. The understanding levels and the alternative conceptions of the pre-service physics teachers were determined by different categories at the end of the content analyses process.   Keywords: Alternative conceptions, electromagnetism education, pre-service physics teachers; understanding level;

The role of slow magnetostrophic waves in dipole formation in rapidly rotating dynamos

2021 ◽  
Author(s):  
Aditya Varma ◽  
Binod Sreenivasan
Keyword(s):  
Magnetic Field ◽  
Threshold Value ◽  
Dipole Field ◽  
Wave Frequency ◽  
Alfven Wave ◽  
Inertial Waves ◽  
Axial Dipole ◽  
Wide Range ◽  
The Magnetic Field

<p>It is known that the columnar structures in rapidly rotating convection are affected by the magnetic field in ways that enhance their helicity. This may explain the dominance of the axial dipole in rotating dynamos. Dynamo simulations starting from a small seed magnetic field have shown that the growth of the field is accompanied by the excitation of convection in the energy-containing length scales. Here, this process is studied by examining axial wave motions in the growth phase of the dynamo for a wide range of thermal forcing. In the early stages of evolution where the field is weak, fast inertial waves weakly modified by the magnetic field are abundantly present. As the field strength(measured by the ratio of the Alfven wave to the inertial wave frequency) exceeds a threshold value, slow magnetostrophic waves are spontaneously generated. The excitation of the slow waves coincides with the generation of helicity through columnar motion, and is followed by the formation of the axial dipole from a chaotic, multipolar state. In strongly driven convection, the slow wave frequency is attenuated, causing weakening of the axial dipole intensity. Kinematic dynamo simulations at the same parameters, where only fast inertial waves are present, fail to produce the axial dipole field. The dipole field in planetary dynamos may thus be supported by the helicity from slow magnetostrophic waves.</p>

scholarly journals Who stands to benefit? Wellbeing, belonging and challenges to equity in engagement in extra-curricular activities at university

2020 ◽  
pp. 146978742090820 ◽  
Author(s):  
Naomi Winstone ◽  
Kieran Balloo ◽  
Karen Gravett ◽  
Daniel Jacobs ◽  
Harry Keen
Keyword(s):  
Sense Of Belonging ◽  
Individual Characteristics ◽  
Student Identity ◽  
Mediating Role ◽  
Wide Range ◽  
Extra Curricular Activities ◽  
The University ◽  
The Impact ◽  
Perceived Outcomes

Students’ engagement in extra-curricular activities can play a significant role in their development of a student identity, as well as leading to a greater sense of belonging and wellbeing. However, individual characteristics such as sociability may influence the likelihood of students engaging in extra-curricular activities. We collected mixed mode data from two online surveys to explore students’ perceptions of the impact of engagement in extra-curricular activities on their experience at university, as well as the mediating role of engagement in extra-curricular activities in the relationships between extraversion and wellbeing and sense of belonging to the University. Our data demonstrate that extraversion is positively associated with both belonging and wellbeing, and that engagement in extra-curricular activities also mediates these relationships. Our qualitative data uncover further nuances in engagement with extra-curricular activities; while many perceived outcomes are positive, some students express regret at opportunities missed, and find it challenging to balance extra-curricular activities and their studies. Taken together, these findings indicate that not all students stand to benefit equally from engagement in extra-curricular activities. Providing a range of opportunities that are accessible to a wide range of students may promote equity in participation in extra-curricular activities.

scholarly journals 3D study of centrifugal acceleration in isotropic photon fields

2019 ◽  
Vol 28 (11) ◽  
pp. 1950141
Author(s):  
G. G. Bakhtadze ◽  
V. I. Berezhiani ◽  
Z. Osmanov
Keyword(s):  
Magnetic Field ◽  
Single Particle ◽  
Stable Equilibrium ◽  
Charged Particles ◽  
Relativistic Dynamics ◽  
Centrifugal Acceleration ◽  
Study Behavior ◽  
Field Lines ◽  
Particle Approach

In this paper, we study relativistic dynamics of charged particles corotating with prescribed trajectories, having the shape of dipolar magnetic field lines. In particular, we consider the role of the drag force caused by the photon field the forming of equilibrium positions of the charged particles. Alongside a single particle approach, we also study behavior of ensemble of particles in the context of stable positions. As we have shown, the together they create surfaces where particles are at stable equilibrium positions. In this paper, we examine these shapes and study parameters they depend on. It has been found that under certain conditions, there are two distinct surfaces with stable equilibrium positions.

Editorial: Taste of City, transnational food and place marketing

2016 ◽  
Vol 4 (2) ◽  
pp. 59-61
Author(s):  
Evinc Dogan ◽  
Ibrahim Sirkeci
Keyword(s):  
Social Sciences ◽  
Place Marketing ◽  
Special Issue ◽  
Migration Studies ◽  
Wide Range ◽  
The World ◽  
Culinary Traditions ◽  
The University ◽  
Selection Of

In this special issue of Transnational Marketing Journal, we brought together a selection of articles drawn from presentations at the Taste of City Conference 2016: Food and Place Marketing which was held at the University of Belgrade, Serbia on 1st September 2016. We have supported the event along with Transnational Press London. We thank to Goran Petkovic, the Faculty of Economics at the University of Belgrade, and Goran’s volunteer students team who helped with the conference organisation. Mobilities are often addressed within social sciences varying across a wide range of disciplines including geography, migration studies, cultural studies, tourism, sociology and anthropology. Food mobilities capture eating, tasting, producing and consuming practices as well as traveling and transferring. Food and tastes are carried around the world, along the routes of mobility through out the history. As people take their own culture to the places, they take their food too. Food meets and mingles with other cultures on the way. Fusion food is born when food transcends the borders and mix with different ingredients from different culinary traditions. Although certain places are associated and branded with food, it is a challenging job to understand the role of food and taste in forming and reformulating the identity of places. 

Proceedings of the 14th annual RiboWest conference: perspectives and outcome

2020 ◽  
Vol 98 (1) ◽  
pp. vii-ix
Author(s):  
Nehal Thakor ◽  
Ute Kothe ◽  
Hans-Joachim Wieden ◽  
Trushar R. Patel
Keyword(s):  
Cell Biology ◽  
Western Canada ◽  
Therapeutic Tool ◽  
Wide Range ◽  
The University ◽  
Postdoctoral Researchers ◽  
Oral Presentations ◽  
And Training ◽  
Training Institute

The RiboWest Conference brings together RNA researchers in Canada with the 2-fold goals of fostering internationally competitive RNA research and of training the next generation of scientists. The 14th Annual RiboWest conference (RiboWest 2018) was held at the University of Lethbridge (Lethbridge, Alberta) from June 10th to 13th, 2018. This meeting was focused on all major aspects of RNA research, ranging from understanding the cellular role of RNA, studying RNA interactions and structures, and employing them as a therapeutic tool. The invited keynote speakers (5) provided insights into the wide-range of RNA-based research. One of the unique features of this conference was that the majority of the oral presentations were given by the trainees (undergraduate/graduate students and postdoctoral researchers). Hosted by the Alberta RNA Research and Training Institute (ARRTI) at the University of Lethbridge as the leading center of RNA research in Western Canada, the RiboWest 2018 was well attended by researchers from across the country (>110 attendees in total). This conference proceedings editorial presents the overview of the conference, and briefly introduces articles published in this special issue of Biochemistry and Cell Biology.

scholarly journals GAUGE INVARIANCE OF ELEMENTARY PARTICLE PROCESSES IN THE PRESENCE OF A BACKGROUND MAGNETIC FIELD

2006 ◽  
Vol 21 (15) ◽  
pp. 3151-3170
Author(s):  
KAUSHIK BHATTACHARYA
Keyword(s):  
Elementary Particle ◽  
Magnetic Field ◽  
Neutron Stars ◽  
Gauge Invariance ◽  
Charged Particles ◽  
Final State ◽  
The Core ◽  
Background Magnetic Field ◽  
Elementary Particle Processes ◽  
Electrically Charged

Elementary particle scatterings and decays in the presence of a background magnetic field are very common in physics, especially after the observation that the core of the neutron stars can sustain a magnetic field of the order of 1013 G. The important point about these calculations is that they are done in a background of a gauge field and as a result the calculations are prone to gauge arbitrariness. In this work we will investigate how this gauge arbitrariness is eradicated in processes where the initial and final particles taking part in the interactions are electrically neutral. Some comments on those processes where the initial or final state consists of electrically charged particles is presented at the end of the paper.

Aurora in Planetary Atmospheres

2020 ◽  
Author(s):  
Steve Miller
Keyword(s):  
Magnetic Field ◽  
Solar Wind ◽  
Solar System ◽  
Magnetic Moment ◽  
Interplanetary Space ◽  
Magnetic Moments ◽  
Charged Particles ◽  
High Energy ◽  
Atoms And Molecules ◽  
Electrically Charged

Planetary aurorae are some of the most iconic and brilliant (in all senses of the word) indicators that not only are we all interconnected on our own planet Earth, but that we are connected throughout the entire solar system as well. They are testimony to the centrality of the Sun, not just in providing the essential sunlight that drives weather systems and makes habitability possible, but in generating a high-velocity wind of electrically charged particles—known as the solar wind—that buffets each of the planets in turn as it streams outward through interplanetary space. In some cases, those solar-wind particles actually cause the aurorae; in others, their pressure prompts and modifies what is already happening within the planetary system as a whole. Aurorae are created when electrically charged particles—predominantly negatively charged electrons or positive ions such as protons, the nuclei of hydrogen—crash into the atoms and molecules of a “planetary” atmosphere. They are guided and accelerated to high energies by magnetic field lines that tend to concentrate them toward the (magnetic) poles. Possessing energies usually measured in hundreds and thousands, all the way up to many millions, of electron Volts (eV), these energetic particles excite the atoms and molecules that constitute the atmosphere. At these energies, such particles can excite the electrons in atoms and molecules from their ground state to higher levels. The atoms and molecules that have been excited by these high-energy collisions can then relax, emitting light immediately after the collision, or after they have been “thermalized” by the surrounding atmosphere. Either way, the emitted radiation is at certain well-defined wavelengths, giving characteristic colors to the aurorae. Just how many particles, how much atmosphere, and what strength of magnetic field are required to create aurorae is an open question. Earth has a moderately sized magnetic field, with a magnetic moment measured at 7.91x1015 Tesla m3 (T m3). It has a moderate atmosphere, too, giving a standard sea-level pressure of 101,325 Pascal (Pa), or 1.01325 bar. The density of the solar wind at Earth is about 6 million per cubic meter (6x106 m-3). Earth has very bright aurorae. Mercury has a magnetic moment 0.7% of that of Earth and no atmosphere to speak of, and consequently no aurorae. But aurorae have been reported on both Venus and Mars, even though they both have surface magnetic fields much less than Mercury: they both have atmospheres, albeit Mars is very rarefied. The giant planets—Jupiter, Saturn, Uranus, and Neptune—have magnetic moments tens, hundreds, and (in the case of Jupiter) thousands of times that of Earth. They all have thick atmospheres, and all of them have aurorae (although Neptune’s has not been seen since the days of the Voyager spacecraft). The aurorae of the solar system are very varied, variable, and exciting.

FOCUSING OF CHARGED PARTICLES IN A CYLINDRICALLY SYMMETRIC MAGNETIC FIELD PROPORTIONAL TO r−1

1963 ◽  
Vol 41 (3) ◽  
pp. 496-532 ◽  
Author(s):  
G. E. Lee-Whiting
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Point Source ◽  
Charged Particles ◽  
Source Area ◽  
Cylindrically Symmetric ◽  
Finite Source ◽  
Flat Type ◽  
Wide Range ◽  
Finite Aperture

The aberrations associated with skew trajectories lying near the midplane of a "flat"-type β spectrometer with a magnetic field falling off as r−1 have been surveyed over wide ranges of values of the field strength at the source and of the angle of emission; Lafoucrière (1950) showed that such a field possesses a perfect focus for midplanar orbits. A field strength has been found for which the aberrations corresponding to finite aperture are exceedingly small; with a point source it would be possible to get transmissions of 2.3% and 6.0% at resolutions of 0.01% and 0.1% respectively. The defocusing resulting from finite source-height has been studied for this particular value of the field strength and has been found to be large; the resulting permissible source-area is so small that the luminosity of the instrument is inferior to that of a π√2 spectrometer.Methods of producing fields varying as r−1 over a wide range of r have been investigated; both iron pole-pieces and iron-free coils have been considered.

scholarly journals THE ROLE OF PROMOTIONAL ACTIVITIES IN INCREASING COMPETITIVENESS OF THE UKRAINIAN HIGHER EDUCATION INSTITUTIONS

2016 ◽  
Author(s):  
Nataliia Horbenko
Keyword(s):  
Higher Education ◽  
Higher Education Institutions ◽  
Educational Institution ◽  
Development Stage ◽  
Scientific Development ◽  
Educational Services ◽  
Wide Range ◽  
Services Implementation ◽  
The University

The article reveals the essence and role of promotional activities of higher education institutions for improving their competitiveness in the market of educational services. In particular, it drew attention to the lack of scientific development of the given problem, on the one hand, and to the obvious importance to provide competitiveness of universities in the today’s socio-cultural environment, on the other hand. The essence and peculiarities of competition and competitiveness of the universities are given, the methods of increasing competitiveness of educational services, implementation of which means implementation of advertising activities by a higher educational institution are represented. It was identified that in the field of educational services the promotional activities should be built in accordance with the principles of flexibility, complexity and adaptability, and its basis should be the quest for more high quality, than the competitor does, in meeting of needs of different target audiences through promotion of a wide range of programs. It is noted that promotional activities related to material production becomes a sphere of promotional images production (images). It is concluded that in organizing promotional activities of the university the unity of purpose and objectives of promotional activities of the university should be provided, that stipulates development and implementation of the strategy of its promotional activities, which will maintain and develop its single educational space in accordance with requirements of the present development stage of the country.

scholarly journals Regional University as a Social Institution (on the example of the Ingush State University)

2021 ◽  
Vol 12 (3) ◽  
pp. 164-175
Author(s):  
Israpil M. Sampiev
Keyword(s):  
Vocational Education ◽  
Professional Education ◽  
Social Institution ◽  
Main Element ◽  
General Description ◽  
State University ◽  
Regional University ◽  
Wide Range ◽  
The University

The article analyses a regional university as a social institution on the example of the case of the Ingush State University. A general description of the university is given. It is shown that a regional university in modern conditions as a social institution acquires special significance both as a scientific institution, and as the main element of the regional educational space, and as a center of an innovative economy. The Ingush University focuses on continuing professional education, that includes pre-university training, secondary vocational education, higher vocational education at various levels, as well as postgraduate and additional vocational education. Opportunities for obtaining secondary vocational and higher education for socially vulnerable segments of the population are expanding. The university is one of the largest employers in the region, therefore, the article emphasises its role in solving the problem of graduates employment. The university provides opportunities for stable employment for representatives of the highest qualifications, who otherwise would not have been able to find an occupation due to the peculiarities of the structure of the depressed regional economy. In addition, the conditions for the development of small innovative enterprises are being formed at the Ingush State University. The driving force behind this process is the Engineering Center, a supplier of a sorbent with a high sorption capacity to the Russian market. The centre is aimed at a long-term solution of problems in the development of modified sorption materials that are used in a wide range of industries, including medicine and agronomy, to eliminate environmental pollution as a result of oil spills, to purify wastewater from various organic substances. The culture-creating role of the university in the space of regional culture is multifaceted. The university, on the one hand, is part of the world cultural and educational community, on the other hand, it works to preserve, develop and spread the culture of the regional peoples. The article analyses the integrative function of the university in the creation and support of a single educational and cultural space as an important condition for state unity and sustainable development of our multinational country. The role of the rector's personality in solving the problems facing the regional university in modern conditions is emphasized.

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