Self-Induced Vibration of a Wire by Thermal Stress

‏‎suppression of coke formation in thermal cracking by coke inhibitors‎‏

‏‎the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...

Thermal Buckling and Thermal Induced free Vibration Analysis of Perforated Composite Plates: a Mathematical Model

This artcile is concerned with thermal buckling and thermal induced free vibration analyses of PCPs (perforated composite plates) with simply supported edges applying a mathematical model. The stiffness and density of PCP are defined locally using Heaviside distribution functions. The governing equations are derived based on CLPT. The present solution gives reasonable results in comparison with...

بررسی جامعه شناسی منطق بر اساس کتاب "weaving self-evidence a sociology of logic" by "claude rosental"

این رساله از چهار فصل تشکیل شده است.نویسنده کتاب در فصل اول در تلاش است تا به جهان دور از دسترس منطق دانان دسترسی پیدا کند در این راستا در ابتدا به سابقه و پیشینه جامعه شناسی ریاضیات و منطق می پردازد. او رویکرد های جامعه شناختی و تجربی به منطق را مورد مداقه قرار می دهد و از این میان شیوه روش قوم شناختی رابر می گزیند. رزنتال اعتقاد دارد نگاه صلب و تغییر ناپذیر به منطق ناصواب است. منطق همانند هر ...

Vibration of a Shape Memory Alloy Wire

Noise thermal impedance of a diffusive wire.

The current noise density S2 of a conductor in equilibrium, the Johnson noise, is determined by its temperature T: S2 = 4k(B)TG, with G the conductance. The sample's noise temperature T(N) = S2/(4k(B)G) generalizes T for a system out of equilibrium. We introduce the "noise thermal impedance" of a sample as the ratio deltaT(N)omega/deltaP(J)omega of the amplitude deltaT(N)omega of the oscillatio...