نتایج جستجو برای: Characteristic Modes methods (CMs)

تعداد نتایج: 2117118  

Abstract- In this article, the design of conformal antennas has been discussed using the characteristic modes (CM) method. For this purpose, the vector wave function(VWF) has been utilized to achieve a two-dimensional mapping of the conformal antenna. In designing and analyzing of cone-shaped antennas applicable for multi-input multi-output (MIMO) systems, the most important goal is to achieve ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده مهندسی برق و کامپیوتر 1391

power transformers are important equipments in power systems. thus there is a large number of researches devoted of power transformers. however, there is still a demand for future investigations, especially in the field of diagnosis of transformer failures. in order to fulfill the demand, the first part reports a study case in which four main types of failures on the active part are investigate...

Journal: :IEEE Antennas and Propagation Magazine 2022

Nearly all practical applications of the theory characteristic modes (CMs) involve use computational tools. This article is second in a series five on CM [1] – rid="ref2" xmlns:xlink="http://www.w3.org/1999/xlink"/> rid="ref3" rid="ref4" xmlns:xlink="http://www.w3.or...

2006
Ben-Shan Liao Zhaojun Bai Weiguo Gao

Substructure coupling methods, such as the component mode synthesis (CMS) method, have been studied in structural dynamics analysis since 1960s. The modes of subsystems associated with the lowest frequencies are typically retained in these methods. In this paper, we present a coupling-matrix based mode selection scheme for the CMS method, referred to as the CMS method. This new scheme is derive...

2007

This document describes an additional content type for the Cryptographic Message Syntax (CMS) [CMS]. The authenticatedenveloped-data content type is intended for use with authenticated encryption modes, where an arbitrary content is both authenticated and encrypted. Also, some associated data in the form of authenticated attributes can also be authenticated. All of the various key management te...

2007

This document describes an additional content type for the Cryptographic Message Syntax (CMS) [CMS]. The authenticatedenveloped-data content type is intended for use with authenticated encryption modes, where an arbitrary content is both authenticated and encrypted. Also, some associated data in the form of authenticated attributes can also be authenticated. All of the various key management te...

2008
Apryl Price

This chapter explains what course management systems (CMS) are, lists the features of the most popular CMS, describes the advantages and disadvantages of CMS, reviews the literature on the effectiveness of learning with CMS communication tools, and discusses the future of CMS. It discusses how CMS have become an important means of computer mediated communication in higher education. CMS are not...

Journal: :SSRG international journal of electrical and electronics engineering 2023

This article describes a coplanar waveguide (CPW) feed inverted L- strip slot antenna implementation along with characteristic mode analysis (CMA) to obtain circular polarization (CP) broad bandwidth. The design includes microstrip annular ring patch and an L-strip asymmetric square slot. resonant radiating behavior of the are analyzed using CMA for first six modes (CMs) attain CP. microstrip-f...

2003
Geng Zhang Matthew P. Castanier Christophe Pierre

When the finite element model of a complex structure is partitioned into substructures in order to enable component mode synthesis (CMS), there may be a large number of degrees of freedom (DOF) on the interface between components. In such a case, the constraint-mode-related coordinate transformation at the substructure analysis stage becomes computationally expensive, and the CMS model may be c...

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