نتایج جستجو برای: and mathematical calculations
تعداد نتایج: 16856589 فیلتر نتایج به سال:
In this paper, a new method for detection and fault location and classification in MTDC solar microgrid is presented. Some issues such as expanding renewable energy sources and DC loads and efforts to increase power quality and reduce the environmental impact of electricity generation have led to the expansion of solar networks. Identifying the types and locations of faults is important to ensu...
boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...
فرض کنیم r حلقه ای یکدار و شرکت پذیر باشد. بنابراین حلقه یک حلقه بئر (متناظراً شبه بئر) نامیده می شود، هرگاه پوچساز چپ هر زیرمجموعه ناتهی(متناظراً هر ایده آل) آن، توسط یک خودتوان تولید شود. در این پایان نامه، مقالات زیر را مورد بررسی و مطالعه قرار گرفته است: yi.z and zhou.y, baer and quasi-baer properties of group rings, journal of the australian mathematical society. 83 (2007), no. 2, 285-296 ...
Linear flux switching motors with simple passive segmented secondary, referred as Segmented Secondary Linear Flux Switching Motors (SSLFSMs), have low cost secondary and therefore are applicable to transportation systems like Maglev. However, it is shown that the SSLFSMs suffer from high thrust ripples. In this paper, minimizing SSLFSM thrust ripples besides maximizing its developed thrust are ...
Mathematical models based on direct fitness calculations may be able to explain important aspects of social evolution in insects.
In this paper the effect of tail form on maneuverability of autonomous underwater vehicle is investigated. In the beginning, tail form is defined using a mathematical function dependent on two parameters including length of the tail and its cone angle. Then the effect of these two parameters on the hydrodynamic coefficients and maneuverability is investigated respectively. Hydrodynamic damping ...
This paper presents some of the results of the simulation in the radiation section of an industrial boiler using an advanced mathematical model. Calculations are described for the flow, heat transfer, and chemical reaction processes occurring within a gas-fired cylindrical furnace. The calculation procedure is a two dimensional one in which the main hydrodynamic variables are the velocity and s...
In this research some mathematical calculations has been explained on the “ +VO2 +glycylglycine” system and some equations has been deduced to determine the stability constants ofthe equilibrium models including MLH+, ML and ML2H species (while M+ ≡ +2 VO , H2L+ ≡protonated glycylglycine and MLH+, ML and ML2H represent the considered complexes). Thecalculations are based on some relations betwe...
Introduction: Successful radiotherapy requires the precise application of a radiation dose to cancerous tissue, which can be achieved by the design of proper treatment methods by radiotherapy physicists. Tasks performed by radiotherapy physicists include verifying the accuracy of dose calculations, correct treatment planning and the proper functioning of accelerators. They are...
BACKGROUND The ability to perform drug calculations accurately is imperative to patient safety. Research into paramedics' drug calculation abilities was first published in 2000 and for nurses' abilities the research dates back to the late 1930s. Yet, there have been no studies investigating an undergraduate paramedic student's ability to perform drug or basic mathematical calculations. The obje...
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