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The Maintainability Index (MI) metric was proposed in the early nineties to gauge ease of code maintenance. A high value of MI indicates well-constructed code which is easy to maintain and a low MI, the opposite. The metric has been criticized in the past and more recently for its applicability to code and validity more generally. Very few studies however have explored whether the MI correlates strongly...
Synthetic antiferromagnetic (SAF) multilayers show promise as soft underlayers for perpendicular recording media and write head material. As synthetic antiferromagnetic is comprised of two ferromagnetic layers separated by a nonmagnetic metallic spacer layer in which the ferromagnetic layers are coupled through antiferromagnetic interlayer exchange. Such interlayer coupling is subject to the thickness...
The interlayer exchange coupling (IEC) in magnetic multilayers determines the spin orientation of individual magnetic layers comprising the system. The dependence of the resistance on the resulting spin configuration in turn leads to the phenomenon known as giant magnetoresistance (GMR). [1] The GMR effect is of key importance to the area of spintronics, in which the spin degree of freedom is utilized...
The main performance challenge of POLAR - a novel hard X-ray polarimeter, is to achieve high statistical accuracy and large modulation factors. Both require great level of response uniformity. Though, typical sensitivity of multi-anode PMTs may vary between its channels up to the factor of two to three. Moreover, the measured signal can be further altered by light coupling quality. We investigate...
With the aid of genetic algorithm (GA), global optimization with multiple geometry parameters are feasible in the design of switched flux permanent magnet (SFPM) machine. To investigate the advantages of global optimization over individual one, which has been used extensively for the design of SFPM machines, the comparisons between two approaches are carried out at the fixed copper loss and volume...
Radial line helical array antenna is a novel antenna which realizes the directional radiation of circularly polarized high power microwave. This paper put forward a rectangular radial line helical array antenna (subarray), which uses short helical antenna as its radiation element, each helix is excited by the energy coupled by a probe from a radial line waveguide, especially it can be simply assembled...
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