As a special kind of synthetic material, glass is widely used in every aspect of our daily life. The glass products can give off a flavor of peace and purity, whose glistening and smooth surface, harmonious transition...
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automatic localization of esophageal tumors is an important part of target volume planning in radiotherapy. Currently, the main localization method is manual localization. Traditional manual positioning is time-consum...
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Medical imaging is a way to analyze the anatomical structure of the body. With the advent of new technologies, more and more sophisticated imaging techniques have been developed such as MRI, CT, PET, X-ray, etc. which...
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Bridges are expensive and important constituents in the transportation network and any failure associated with it results in a huge loss of money, time and sometimes, lives. Bridges are important structures considerin...
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Advanced telecommunication applications are often based on a multi-tier architecture, with application servers and database servers. With a rapidly increasing development of cloud computing and data centers, character...
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With rapid technological advancement, cyber-physical systems (CPS) become an emerging era of engineered systems based on computing, networking, and control technologies that revolutionize human lives. New and smart CP...
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The paper describes a methodology for evaluating the improved electric modes efficiency for arc steel-making furnaces and ladle-furnaces. The technical effect is achieved due to the reduction of specific electricity c...
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One of the most effective approaches to satisfying the requirements of the next generation of wireless services is non-orthogonal multiple access (NOMA). Spectrum efficiency and average capacity are two aspects of wir...
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Support Vector Machines (SVM) for binary classification have boon developed in a broad field of applications. But normal SVM algorithms are not suitable for classification of large data sets because of high training c...
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In this study we have employed the one-dimensional transfer matrix method, derived from Mason's model, to obtain the input electrical impedance (Z in ) for a four layer (metal/piezoelectric/metal/substrate) thin f...
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In this study we have employed the one-dimensional transfer matrix method, derived from Mason's model, to obtain the input electrical impedance (Z in ) for a four layer (metal/piezoelectric/metal/substrate) thin film bulk acoustic wave resonator (FBAR). The input electrical impedance was calculated taking into account the electromechanical properties of the ZnO thin films, the metal used for the contacts and the silicon oxide (SiO 2 ) supporting layer in order to calculate the electromechanical effective coupling coefficient K 2 eff and the quality factor of the device (Q D ). We use a figure of merit (FOM) defined as the product of K eff 2 × Q D to optimize both parameters simultaneously for their use in microwave band-pass filters. In this analysis, several metals were employed as electrodes in the FBAR device, and we have found that for gold we obtain a higher value for the FOM than for aluminum, copper or silver. In this case, the optimal metal thickness is around 1.5 micrometers. In addition, the calculated values show that for copper and silver electrodes the FOM is almost the same than for gold electrodes. Then, these electrodes could substitute gold electrodes for achieving low cost filters with good electrical performance.
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