background: estimating dosimetric parameters for small fields under non-reference conditions leads to significant errors if done based on conventional protocols used for large fields in reference conditions. hence, further correction factors have been introduced to take into account the influence of spectral quality changes when various detectors are used in non-reference conditions at differen...

During this time of covid 19, many the world's economies fell drastically, so one method that can improve economy city Medan is to make improvements micro, small and medium enterprises. So, in paper, a study aims identify analyze development enterprises (MSMEs) supporting economic growth Medan. One business fields develop be consistent national Micro, Small, Medium Enterprises (MSMEs). are good...

Purpose: To investigate the energy dependence/spectral sensitivity of silicon diodes designed for small-field dosimetry and obtain response factors (RFs) for arbitrary photon spectra using Monte Carlo (MC) simulations.   Methods: The EGSnrc user-code DOSRZnrc was used to calculate the dose deposition in water and in the active volume of a stereotactic diode f...

the objective of this paper is to determine the efficiency of manufacturing companies in kenya over the period of 2009 to 2011 as well as suggesting appropriate policies to be employed by the manufacturing companies in kenya based on the findings of the study. three critical inputs variables (raw materials, staff expenses and plant and machinery) and two output variables (net sale and earnings ...

The Number Field Sieve (NFS) algorithm is the best known method to compute discrete logarithms (DL) in finite fields Fpn , with p medium to large and n ≥ 1 small. This algorithm comprises four steps: polynomial selection, relation collection, linear algebra and finally, individual logarithm computation. The first step outputs two polynomials defining two number fields, and a map from the polyno...

In the present paper, the expressions for scalar and vector potentials in lossless isotropic chiral media are analyzed. Propagating eigenvalues of these potentials are then obtained. Furthermore by decomposition of sources and fields in a chiral medium, we introduce the auxiliary right-and left-handed potentials and find the associated fields. These potentials are used to solve the problem of a...