scholarly journals The Usage of Alternative Assessment Techniques in Determination of Misconceptions about Electromagnetic Field-Magnetism Contents and Effects of Video-Based Experiments on Students’ Achievement at Distance Learning Course

2012 ◽  
Vol 55 ◽  
pp. 155-160 ◽  
Author(s):  
Ozgur Yilmaz ◽  
Elif Ince
Keyword(s):  
Electromagnetic Field ◽  
Distance Learning ◽  
Alternative Assessment ◽  
Assessment Techniques

scholarly journals ЗМІНА ЕЛЕКТРИЧНИХ ВЛАСТИВОСТЕЙ НАСІННЯ ПІД ВПЛИВОМ ВИСОКОЧАСТОТНОГО ЕЛЕКТРОМАГНІТНОГО ОПРОМІНЕННЯ

2014 ◽  
pp. 151-155
Author(s):  
О. М. Петровський
Keyword(s):  
Electromagnetic Field ◽  
High Frequency ◽  
Electric Properties ◽  
Electric Resistance ◽  
Active Resistance ◽  
Exchange Processes ◽  
High Frequency Electromagnetic Field ◽  
Stimulation Of

Розглянуті питання передпосівної стимуляції на-сіння високочастотним електромагнітним полем.Запропоновано спосіб опромінення насіння і визна-чення його електричних характеристик. На основібудови клітин визначені електричні властивості біо-логічної тканини, з якої складається насіння. Пока-зана зміна складових активного опору в залежностівід частоти струму. Експериментально доведено,що еквівалентну електричну схему неможливо звес-ти до простих випадків з’єднання опорів і ємностей,а саме насіння не можна вважати нейтральнимдіелектриком. Розроблена методика оцінки інтенси-вності обмінних процесів залежно від електричногоопору насіння. The questions of stimulation of seed before sowing are considered by the high-frequency electromagnetic field considered. The method of irradiation of seed and determination of him is offered electric descriptions. On the basis of structure of cages electric properties of biological fabric which seed consist of are certain. The change of constituents of active resistance is shown depending on frequency of current. It is experimentally proved that it is impossible to erect an equivalent electric chart to the simple cases of connection of resistances and capacities, namely seed can not be considered a neutral dielectric. The method of estimation of intensity of exchange processes  is developed depending on electric resistance of seed.

scholarly journals Quantitative 3D electromagnetic field determination of 1D nanostructures from single projection

2016 ◽  
Vol 164 ◽  
pp. 24-30 ◽  
Author(s):  
C. Phatak ◽  
L. de Knoop ◽  
F. Houdellier ◽  
C. Gatel ◽  
M.J. Hÿtch ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
1D Nanostructures

Pre-Employment Testing and Employee Productivity

1992 ◽  
Vol 21 (2) ◽  
pp. 133-150 ◽  
Author(s):  
Lawrence M. Rudner
Keyword(s):  
Alternative Assessment ◽  
Employee Productivity ◽  
Test Quality ◽  
Employment Testing ◽  
Validity Generalization ◽  
Assessment Techniques ◽  
The Right ◽  
Productivity Gains ◽  
Employment Tests

Under the right conditions, pre-employment tests can vastly improve corporate productivity. This paper discusses the conditions, expected productivity gains, and issues associated with pre-employment testing. Special attention is paid to issues of bias, legal rulings, validity generalization, exaggerated expectations, test quality, misuse of tests, publishers' claims, alternative assessment techniques, and the use of honesty tests.

scholarly journals Dirac's Observables for the Higgs Model I: The Abelian Case

1997 ◽  
Vol 12 (26) ◽  
pp. 4769-4796 ◽  
Author(s):  
Luca Lusanna ◽  
Paolo Valtancoli
Keyword(s):  
Electromagnetic Field ◽  
Principal Bundle ◽  
Canonical Basis ◽  
Higgs Field ◽  
Higgs Model ◽  
Electromagnetic Mass ◽  
Vortex Solution ◽  
Abelian Case ◽  
Gauge Fixing

We search a canonical basis of Dirac's observables for the classical Abelian Higgs model with fermions in the case of a trivial U(1) principal bundle. The study of the Gauss law first class constraint shows that the model has two disjoint sectors of solutions associated with two physically different phases. In the electromagnetic phase, the electromagnetic field remains massless: after the determination of the Dirac's observables we get that both the reduced physical Hamiltonian and Lagrangian are nonlocal. In the Higgs phase, the electromagnetic field becomes massive and in terms of Dirac's observables we get a local, but nonanalytic in the electric charge (or equivalently in the sum of the electromagnetic mass and of the residual Higgs field), physical Hamiltonian; however the associated Lagrangian is nonlocal. Some comments on the R-gauge-fixing, the possible elimination of the residual Higgs field and on the Nielsen–Olesen vortex solution close the paper.

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