The opening chapter of Advances in Engineering Research. Volume 27 summarizes current progress in the design of multimode dielectric resonator antennas. Emphasis is placed on the operating modes achieved by different research groups, including the authors, as well as the feeding system used, the modes radiation performances, and radiation patterns. The authors conclude that the full potential of dielectric resonator antennas can only be obtained using its multi-mode capabilities. Following this, a detailed discussion on flexible organic thin-film transistors is provided, focusing on different...

Advances in Engineering Research. Volume 30 opens by presenting methods in which rays can be used to calculate the properties of a propagating generally astigmatic Gaussian beam at any point in an optical system, optimize the system to obtain the desired Gaussian beam focus and minimize aberrations, analyze stray light, or calculate fiber coupling efficiency. The authors also present an enhanced input/output-linearizing and decoupling control in variable speed for a wind energy conversion system, which is based on an adaptive neuro-fuzzy inference system, a combination of two soft-computing...

Advances in Engineering Research. Volume 32 opens by describing a general strategy for building Markov chain models and performing computational analysis of characteristics of the process, as well as showing a few examples of applying this approach to modeling mixing, grinding, fluidized bed, etc. Next, the configurations of gas channels and gas diffusion layers influences on the performance of polymer electrolyte membrane fuel cells are investigated. Additionally, a numerical method and an experimental method are realized to predict aeroelastic response and characteristic parameters of wing...

Advances in Engineering Research. Volume 33 opens by describing a general strategy for building Markov chain models and performing a computational analysis of characteristics of the process, as well providing a few examples of the applications of this approach. Adaptive differential evolution algorithms are compared with the conventional genetic algorithm in the optimization and identification of the parameters of power electronics systems and electric drives. The authors investigate the impact of a particular flow parameter on mixed flow turbine loss generation and performance, aiming to...

In the opening study of Advances in Engineering Research. Volume 34, five probability distributions which are currently used by researchers, including Normal, Log-Normal II, Gumbel, Pearson type III and Log-Pearson type III, are fitted to the values of ET0 and precipitation related to 30 synoptic stations of Iran with different climates. The authors discuss an energy efficient envelope tracking solution in a power amplifier system for demanding wireless standards. In a wireless transmitter, a huge portion of power is consumed by the power amplifier, and this generates the need for a...

Advances in Engineering Research. Volume 35 first provides a classiication scheme of assembly line balancing problems according to characteristic practical settings, highlighting relevant model extensions which are required to reiect real-world problems. Additionally, an assembly line balancing problem is introduced through designing an integrated assembly line and addressing the number of workstations and simultaneous assignments of skilled and unskilled workers. The authors describe an analogy between the methods of adaptive control used in classical control theory and practice on the one...

Advances in Engineering Research. Volume 36 explores how the coordinated operation of various sources, usually renewable ones with energy storage, is integral to hybrid power systems. Hybrid power systems may vary from few watts to moment magnitude-scale providing energy services. This compilation also approaches for the optimisation of looped water distribution networks supplied from one or more sources, according to demand variation. In one study, 1-degree of freedom and 2-degree of freedom proportional-intergral-derivative and fractional order proportionalaintegraladerivative controllers...