The work shows computational results of the effect of a simplified mathematical model of the flight dynamics of a spin-stabilized projectile on the accuracy and speed of calculation parameters for the projectile trajectory (in the entire range of operating quadrant elevation of the barrel and possible perturbations of the conditions firing) to determine an appropriate mathematical model for the...

This paper presents a framework based on ontologies, rules and mathematical semantic representation standards, for the automatic calculation of the level of quality of service perceived by the customers in telematic services. This automation is achieved by representing and using the mappings between technical quality of service and quality of experience in a knowledge-based framework supported ...

background and purpose: sample size and its determination is one of the most important problems in health researches. calculating sample size for prevalence studies is one of the common questions of sample size topics. minimum sample size with least complexity is desirable in order to achieve the basic goal of these studies. this study aims to compare two formulas of sample size calculation for...

-Dynamic Voltage Restorer (DVR) is a device used to mitigate voltage sags which are a significant power quality issue. This paper involves mathematical calculation for leading series voltage injection for mitigation of sags thereby achieving utility power factor improvement as well as power sharing between DVR and utility as per requirement and available distributed generation. Mathematical der...

Matsad is a structure editor designed to facilitate the writing of documents of a mathematical nature. The principal element of Matsad is a system for deening and using \stencils" which deene the visual and logical structure of notational elements in a document. This paper overviews the main features of the editor from a user's viewpoint. Particular attention is given to a discussion of the pri...

obtain , which is exactly the Ø p 3.3% same as the result obtained by the simple mathematical calculation 4/121 100, and the mathematical model would become redundant. We would accept 3.3% as the proportion discordant, although the binomial 95% confidence interval is 1.3%–8.2%. Nonetheless, had the authors chosen to test 13 colonies per sample, they might have observed a larger number of discor...

A mathematical method for calculation of the minimum cross-sectional area of a thickener is presented by obtaining minimum laboratory batch settling test data, a function, which is called settling function, is derived. This function is found to be in the form of a polynomial of third order. The settling function and mass flux relation are used for the design of thickener. The method predict...

The objective of this study was to assess the efficiency of three mathematical models (power, exponential and logarithmic functions) for the calculation of the horizontal mass transport (HMT), as compared to the linear spline interpolation for the Cyclone Dust Sampler (CDS) and one with a Cone (CDSC), modified Wilson and Cooke trap (MWAC) and big spring number eight (BSNE). For the purposes of t...

This paper presents a fuzzy multi-criteria decision-making (FMCDM) model by integrating both subjective and objective weights for ranking and evaluating the service quality in hotels. The objective method selects weights of criteria through mathematical calculation, while the subjective method uses judgments of decision makers. In this paper, we use a combination of weights ob...

We discuss common difficulties in upper-division electricity and magnetism (E&M) in the areas of Gauss’s law, vector calculus, and electric potential using both quantitative and qualitative evidence. We also show that many of these topical difficulties may be tied to student difficulties with mathematics. At the junior level, some students struggle to combine mathematical calculations and physi...